Science.gov

Sample records for uno spazio europeo

  1. La relatività debole. La fisica dello spazio e del tempo senza paradossi

    NASA Astrophysics Data System (ADS)

    Selleri, Franco

    2011-06-01

    Secondo Einstein e Poincaré la simultaneità di eventi che hanno luogo in punti diversi dello spazio può essere definita solo per convenzione. Dal punto di vista matematico si dimostra, quindi, che due diverse definizioni di simultaneità corrispondono a due diversi valori del coefficiente e1 della variabile spaziale x presente nelle trasformazioni di Lorentz. A partire da premesse normalmente accettate otterremo diverse dimostrazioni della necessità di reintrodurre il concetto di simultaneità assoluta. Le conseguenze cosmologiche della nuova struttura dello spazio e del tempo andranno contro la cosmologia del Big Bang. Inoltre, dopo questi risultati, il relativismo sopravviverà in una forma meno aspra ("relatività debole") perché risulter privo di quel campionario di paradossi portato dalla teoria della Relatività Speciale.

  2. CASA Uno GPS orbit and baseline experiments

    NASA Technical Reports Server (NTRS)

    Schutz, B. E.; Ho, C. S.; Abusali, P. A. M.; Tapley, B. D.

    1990-01-01

    CASA Uno data from sites distributed in longitude from Australia to Europe have been used to determine orbits of the GPS satellites. The characteristics of the orbits determined from double difference phase have been evaluated through comparisons of two-week solutions with one-week solutions and by comparisons of predicted and estimated orbits. Evidence of unmodeled effects is demonstrated, particularly associated with the orbit planes that experience solar eclipse. The orbit accuracy has been assessed through the repeatability of unconstrained estimated baseline vectors ranging from 245 km to 5400 km. Both the baseline repeatability and the comparison with independent space geodetic methods give results at the level of 1-2 parts in 100,000,000. In addition, the Mojave/Owens Valley (245 km) and Kokee Park/Ft. Davis (5409 km) estimates agree with VLBI and SLR to better than 1 part in 100,000,000.

  3. Aerodynamic characteristics of the Fiat UNO car

    SciTech Connect

    Costelli, A.F.

    1984-01-01

    The purpose of this article is to describe the work conducted in the aerodynamic field throughout the 4-year development and engineering time span required by the project of the UNO car. A description is given of all the parametric studies carried out. Through these studies two types of cars at present in production were defined and the characteristics of a possible future sports version laid down. A movable device, to be fitted in the back window, was also set up and patented. When actuated it reduces soiling of back window. A description is also provided of the measurements made in the car flow field and some considerations are outlined about the method applied. This method is still in development phase but it already permits some considerations and in-depth investigations to be made on the vehicle wake.

  4. Design Authority in the Test Programme Definition: The Alenia Spazio Experience

    NASA Astrophysics Data System (ADS)

    Messidoro, P.; Sacchi, E.; Beruto, E.; Fleming, P.; Marucchi Chierro, P.-P.

    2004-08-01

    In addition, being the Verification and Test Programme a significant part of the spacecraft development life cycle in terms of cost and time, very often the subject of the mentioned discussion has the objective to optimize the verification campaign by possible deletion or limitation of some testing activities. The increased market pressure to reduce the project's schedule and cost is originating a dialecting process inside the project teams, involving program management and design authorities, in order to optimize the verification and testing programme. The paper introduces the Alenia Spazio experience in this context, coming from the real project life on different products and missions (science, TLC, EO, manned, transportation, military, commercial, recurrent and one-of-a-kind). Usually the applicable verification and testing standards (e.g. ECSS-E-10 part 2 "Verification" and ECSS-E-10 part 3 "Testing" [1]) are tailored to the specific project on the basis of its peculiar mission constraints. The Model Philosophy and the associated verification and test programme are defined following an iterative process which suitably combines several aspects (including for examples test requirements and facilities) as shown in Fig. 1 (from ECSS-E-10). The considered cases are mainly oriented to the thermal and mechanical verification, where the benefits of possible test programme optimizations are more significant. Considering the thermal qualification and acceptance testing (i.e. Thermal Balance and Thermal Vacuum) the lessons learned originated by the development of several satellites are presented together with the corresponding recommended approaches. In particular the cases are indicated in which a proper Thermal Balance Test is mandatory and others, in presence of more recurrent design, where a qualification by analysis could be envisaged. The importance of a proper Thermal Vacuum exposure for workmanship verification is also highlighted. Similar considerations are

  5. Central and South America GPS geodesy - CASA Uno

    NASA Technical Reports Server (NTRS)

    Kellogg, James N.; Dixon, Timothy H.

    1990-01-01

    In January 1988, scientists from over 25 organizations in 13 countries and territories cooperated in the largest GPS campaign in the world to date. A total of 43 GPS receivers collected approximately 590 station-days of data in American Samoa, Australia, Canada, Colombia, Costa Rica, Ecuador, New Zealand, Norway, Panama, Sweden, United States, West Germany, and Venezuela. The experiment was entitled CASA Uno. Scientific goals of the project include measurements of strain in the northern Andes, subduction rates for the Cocos and Nazca plates beneath Central and South America, and relative motion between the Caribbean plate and South America. A second set of measurements are planned in 1991 and should provide preliminary estimates of crustal deformation and plate motion rates in the region.

  6. Liver transplantation for neonatal hemochromatosis: analysis of the UNOS database.

    PubMed

    Sheflin-Findling, Shari; Annunziato, Rachel A; Chu, Jaime; Arvelakis, Antonios; Mahon, Danielle; Arnon, Ronen

    2015-03-01

    NH is the most common identifiable cause of ALF in the neonate. LT is the definitive treatment for neonates with NH who have failed medical therapy. Our aim was to determine the outcomes of LT in infants with NH. Patients (less than one yr of age) with NH who were listed for LT and patients who underwent LT between 1994 and 2013 were identified from the UNOS database for analysis. Risk factors for death and graft loss were analyzed by multivariate logistic regression. Thirty-eight infants with NH with a total of 43 transplants were identified. One- and five-yr patient and graft survival were 84.2%, 81.6%, 71.1%, and 68.4%, respectively. The outcomes for NH were not significantly different when compared to the same age-matched recipients with other causes of ALF. There were no statistically significant risk factors identified for graft loss or death. Ninety infants with NH were listed for LT. Reasons for removal included transplanted (49%), death (27%), too sick to transplant (7%), and improved status (13%). LT for infants with NH has a high rate of graft loss and death; however, outcomes are comparable to the same age-matched recipients with other causes of ALF.

  7. Comparative study of numerical schemes of TVD3, UNO3-ACM and optimized compact scheme

    NASA Technical Reports Server (NTRS)

    Lee, Duck-Joo; Hwang, Chang-Jeon; Ko, Duck-Kon; Kim, Jae-Wook

    1995-01-01

    Three different schemes are employed to solve the benchmark problem. The first one is a conventional TVD-MUSCL (Monotone Upwind Schemes for Conservation Laws) scheme. The second scheme is a UNO3-ACM (Uniformly Non-Oscillatory Artificial Compression Method) scheme. The third scheme is an optimized compact finite difference scheme modified by us: the 4th order Runge Kutta time stepping, the 4th order pentadiagonal compact spatial discretization with the maximum resolution characteristics. The problems of category 1 are solved by using the second (UNO3-ACM) and third (Optimized Compact) schemes. The problems of category 2 are solved by using the first (TVD3) and second (UNO3-ACM) schemes. The problem of category 5 is solved by using the first (TVD3) scheme. It can be concluded from the present calculations that the Optimized Compact scheme and the UN03-ACM show good resolutions for category 1 and category 2 respectively.

  8. Evaluation of XRI-UNO CdTe detector for nuclear medical imaging

    NASA Astrophysics Data System (ADS)

    Jambi, L. K.; Lees, J. E.; Bugby, S. L.; Tipper, S.; Alqahtani, M. S.; Perkins, A. C.

    2015-06-01

    Over the last two decades advances in semiconductor detector technology have reached the point where they are sufficiently sensitive to become an alternative to scintillators for high energy gamma ray detection for application in fields such as medical imaging. This paper assessed the Cadmium-Telluride (CdTe) XRI-UNO semiconductor detector produced by X-RAY Imatek for photon energies of interest in nuclear imaging. The XRI-UNO detector was found to have an intrinsic spatial resolution of <0.5mm and a high incident count rate capability up to at least 1680cps. The system spatial resolution, uniformity and sensitivity characteristics are also reported.

  9. Stacking up against Alternative Conceptions: Using Uno Cards to Introduce Discourse and Argumentation

    ERIC Educational Resources Information Center

    Dunac, Patricia S.; Demi, Kadir

    2013-01-01

    We engaged secondary science students in a teacher and student constructed Uno card game (UCG) to change their conceptual understanding of the various energy transformations. The paper outlines how we incorporated Toulmin's argumentation pattern (Toulmin 1958 "The Uses of Argument"(Cambridge: Cambridge University Press)) in the UCG,…

  10. Making Americans: UNO Charter Schools and Civic Education. Policy Brief 6

    ERIC Educational Resources Information Center

    Feith, David

    2013-01-01

    This policy brief is the third in a series of in-depth case studies exploring how top-performing charter schools have incorporated civic learning in their school curriculum and school culture. The UNO Charter School Network includes 13 schools serving some 6,500 students across Chicago. Located in predominantly Hispanic neighborhoods, the…

  11. Through Education into the World of Work. Uno Cygnaeus, the Father of Technology Education.

    ERIC Educational Resources Information Center

    Kantola, Jouko; Nikkanen, Pentti; Kari, Jouko; Kananoja, Tapani

    More than 100 years have passed since the death of Uno Cygnaeus (1810-1888), the father of Finnish folk schools and pioneer of educational arts and crafts. His accomplishments include design and organization of the folk school system, initiation of high class teacher training, and emphasis on the importance of women's education. Although his…

  12. Behaviors, Attitudes and Knowledge of UNO Students Regarding Drugs, Alcohol and Tobacco: 1989.

    ERIC Educational Resources Information Center

    Hunnicutt, David; Davis, Joe

    1989-01-01

    This report describes alcohol, tobacco, and other drug use among 715 University of Nebraska at Omaha (UNO) students. The report focuses on drug use at the higher frequency levels, rather than reporting proportions who have ever used various drugs. The separate classes of drugs distinguished are alcohol, tobacco, cocaine, marijuana, and…

  13. Cuando uno de tus papás tiene cáncer

    Cancer.gov

    Sugerencias para saber qué decir a los amigos, cómo superar la tensión y en dónde encontrar apoyo; también, información sobre el cáncer y sobre los tratamientos de cáncer, para jóvenes que tienen a uno de sus papás con cáncer.

  14. Polycyclic aromatic hydrocarbons profiles of spent drilling fluids deposited at Emu-Uno, Delta State, Nigeria.

    PubMed

    Iwegbue, Chukwujindu M A

    2011-10-01

    The concentrations and profiles of polycyclic aromatic hydrocarbons were determined in spent drilling fluid deposited at Emu-Uno, Delta State of Nigeria. The total concentrations of polycyclic aromatic hydrocarbons in the spent drilling fluid deposits ranged between 40 and 770 μg kg(-1). The PAHs profile were predominantly 2- and 3-rings with acenaphthalene, phenanthrene, fluorene being the predominant PAHs. The prevalence of 2- and 3-rings PAHs in the spent drilling fluid deposits indicate contamination of the drilling fluids with crude oil during drilling. Incorporation of spent drilling fluids into the soil has serious implication for soil, surface water and groundwater quality.

  15. Polycyclic aromatic hydrocarbons profiles of spent drilling fluids deposited at Emu-Uno, Delta State, Nigeria.

    PubMed

    Iwegbue, Chukwujindu M A

    2011-10-01

    The concentrations and profiles of polycyclic aromatic hydrocarbons were determined in spent drilling fluid deposited at Emu-Uno, Delta State of Nigeria. The total concentrations of polycyclic aromatic hydrocarbons in the spent drilling fluid deposits ranged between 40 and 770 μg kg(-1). The PAHs profile were predominantly 2- and 3-rings with acenaphthalene, phenanthrene, fluorene being the predominant PAHs. The prevalence of 2- and 3-rings PAHs in the spent drilling fluid deposits indicate contamination of the drilling fluids with crude oil during drilling. Incorporation of spent drilling fluids into the soil has serious implication for soil, surface water and groundwater quality. PMID:21809098

  16. The effect of tracking network configuration on GPS baseline estimates for the CASA Uno experiment

    NASA Technical Reports Server (NTRS)

    Wolf, S. Kornreich; Dixon, T. H.; Freymueller, J. T.

    1990-01-01

    The effect of the tracking network on long (greater than 100 km) GPS baseline estimates was estimated using various subsets of the global tracking network initiated by the first Central and South America (CASA Uno) experiment. It was found that best results could be obtained with a global tacking network consisting of three U.S. stations, two sites in the southwestern Pacific, and two sites in Europe. In comparison with smaller subsets, this global network improved the baseline repeatability, the resolution of carrier phase cycle ambiguities, and formal errors of the orbit estimates.

  17. [Morphological characterization of experimental parodontitis during its treatment with a phyto-preparation uno de gato].

    PubMed

    Miminoshvili, Sh M; Gvamichava, T A; Mdinaradze, N L

    2007-06-01

    Examination of new methods of treatment of parodontitis is stipulated by the significant increase in the number of patients with parodontitis. Experiments were conducted on white outbred male rats weighing 150-200 gr, which were divided into three groups. The first group was a reference one (n=20). The second group includes induced parodontitis (n=15) and the third group includes induced parodontitis with the treatment of uno de gato (n=19). We simulated parodontitis in the following way: on the lower nippers in the field of a neck we attached a ligature causing mechanical damage. We used a intramuscular injection of Nembutal as a means of narcotization (0.1 ml-10 g per mass). The present work is dedicated to morphological studies of the structures of damaged parodontium during its treatment with a phyto-preparation uno de gato. The undertaken treatment has demonstrated partial restoration of the mucous tunic of the gum. Newly formed capillaries were found in the connective tissue. The fibroblasts are mostly mature and collagen-producing. Thus, the study has demonstrated that there is a certain tendency of the tissue restoration and the treatment has produced the best therapeutic results. PMID:17660608

  18. Liver transplantation for hereditary tyrosinemia type I: analysis of the UNOS database.

    PubMed

    Arnon, Ronen; Annunziato, Rachel; Miloh, Tamir; Wasserstein, Melissa; Sogawa, Hiroshi; Wilson, Monique; Suchy, Frederick; Kerkar, Nanda

    2011-06-01

    Patients with HT-1 can develop progressive liver disease and have a high incidence of HCC. LT is indicated in patients with fulminant liver failure, HCC or decompensated chronic liver disease refractory to NTBC. To determine the need for LT and outcomes after LT in children with HT-1. Children with HT-1 who had LT between 10/1987 and 5/2008 were identified from the UNOS database. Of 11,467 children in the UNOS database, 125 (1.1%) required LT secondary to HT-1. Mean age at LT was two and half yr (s.d. ± 3.6 yr). Mean age at LT during the first 10 yr of the study (1.82, s.d. ± 2.86 yr) was significantly lower than in the last decade (3.70, s.d. ± 4.42 yr), p = 0.01. Nearly half of the patients (58, 46.4%) were transplanted between 1988 and 1992. Overall, one- and five-yr patient survival was 90.4% and 90.4%, respectively. LT is a valuable option for children with HT-1 with fulminant liver failure or when medical treatment fails. The rate of LT for children with HT-1 has decreased and age at transplant increased over the last decade most probably reflecting the effect of early diagnosis and treatment with NTBC.

  19. Stacking up against alternative conceptions: using Uno cards to introduce discourse and argumentation

    NASA Astrophysics Data System (ADS)

    Dunac, Patricia S.; Demir, Kadir

    2013-11-01

    We engaged secondary science students in a teacher and student constructed Uno card game (UCG) to change their conceptual understanding of the various energy transformations. The paper outlines how we incorporated Toulmin’s argumentation pattern (Toulmin 1958 The Uses of Argument (Cambridge: Cambridge University Press)) in the UCG, using discourse (Erduran et al 2004 Sci. Educ. 88 915-33) and through a 5E learning cycle (Bybee 1997 Achieving Scientific Literacy: From Purposes to Practices (Portsmouth, NH: Heinemann Educational Books)). The activity helped students develop a deeper understanding of the energy transformation among and between different sources. Students experienced a conceptual gain in their ways of thinking, in contrast to traditional teaching and learning practices. The collaboration and interaction between teacher-student(s) and between students fostered an environment where they became co-constructors of knowledge.

  20. Some tests of wet tropospheric calibration for the CASA Uno Global Positioning System experiment

    NASA Technical Reports Server (NTRS)

    Dixon, T. H.; Wolf, S. Kornreich

    1990-01-01

    Wet tropospheric path delay can be a major error source for Global Positioning System (GPS) geodetic experiments. Strategies for minimizing this error are investigted using data from CASA Uno, the first major GPS experiment in Central and South America, where wet path delays may be both high and variable. Wet path delay calibration using water vapor radiometers (WVRs) and residual delay estimation is compared with strategies where the entire wet path delay is estimated stochastically without prior calibration, using data from a 270-km test baseline in Costa Rica. Both approaches yield centimeter-level baseline repeatability and similar tropospheric estimates, suggesting that WVR calibration is not critical for obtaining high precision results with GPS in the CASA region.

  1. Heart Transplant Survival Based on Recipient and Donor Risk Scoring: A UNOS Database Analysis.

    PubMed

    Trivedi, Jaimin R; Cheng, Allen; Ising, Mickey; Lenneman, Andrew; Birks, Emma; Slaughter, Mark S

    2016-01-01

    Unlike the lung allocation score, currently, there is no quantitative scoring system available for patients on heart transplant waiting list. By using United Network for Organ Sharing (UNOS) data, we aim to generate a scoring system based on the recipient and donor risk factors to predict posttransplant survival. Available UNOS data were queried between 2005 and 2013 for heart transplant recipients aged ≥18 years to create separate cox-proportional hazard models for recipient and donor risk scoring. On the basis of risk scores, recipients were divided into five groups and donors into three groups. Kaplan-Meier curves were used for survival. Total 17,131 patients had heart transplant within specified time period. Major factors within high-risk groups were body mass index > 30 kg/m (46%), mean pulmonary artery pressure >30 mmHg (65%), creatinine > 1.5 mg% (63%), bilirubin > 1.5 mg% (54%), noncontinuous-flow left ventricular assist devices (45%) for recipients and gender mismatch (81%) and ischemia time >4 hours (88%) for donors. Survival in recipient groups 1, 2, 3, 4, and 5 at 5 years was 81, 80, 77, 74, and 62%, respectively, and in donor groups 1, 2, and 3 at 5 years was 79, 77, and 70%, respectively (p < 0.001). Combining donor and recipient groups based on scoring showed acceptable survival in low-risk recipients with high-risk donor (75% at 5 years). A higher recipient and donor risk score are associated with worse long-term survival. A low-risk recipient transplanted with high-risk donor has acceptable survival at 5 years, but high-risk recipient combined with a high-risk donor has marginal results. Using an objective scoring system could help get the best results when utilizing high-risk donors. PMID:26771395

  2. UnoViS: the MedIT public unobtrusive vital signs database.

    PubMed

    Wartzek, Tobias; Czaplik, Michael; Antink, Christoph Hoog; Eilebrecht, Benjamin; Walocha, Rafael; Leonhardt, Steffen

    2015-01-01

    While PhysioNet is a large database for standard clinical vital signs measurements, such a database does not exist for unobtrusively measured signals. This inhibits progress in the vital area of signal processing for unobtrusive medical monitoring as not everybody owns the specific measurement systems to acquire signals. Furthermore, if no common database exists, a comparison between different signal processing approaches is not possible. This gap will be closed by our UnoViS database. It contains different recordings in various scenarios ranging from a clinical study to measurements obtained while driving a car. Currently, 145 records with a total of 16.2 h of measurement data is available, which are provided as MATLAB files or in the PhysioNet WFDB file format. In its initial state, only (multichannel) capacitive ECG and unobtrusive PPG signals are, together with a reference ECG, included. All ECG signals contain annotations by a peak detector and by a medical expert. A dataset from a clinical study contains further clinical annotations. Additionally, supplementary functions are provided, which simplify the usage of the database and thus the development and evaluation of new algorithms. The development of urgently needed methods for very robust parameter extraction or robust signal fusion in view of frequent severe motion artifacts in unobtrusive monitoring is now possible with the database.

  3. Under Utilization of Pancreas Transplants in Cystic Fibrosis Recipients in the United Network Organ Sharing (UNOS) Data 1987-2014.

    PubMed

    Usatin, D J; Perito, E R; Posselt, A M; Rosenthal, P

    2016-05-01

    Despite a high prevalence of pancreatic endocrine and exocrine insufficiency in cystic fibrosis (CF), pancreas transplantation is rarely reported. United Network for Organ Sharing (UNOS) data were used to examine utilization of pancreas transplant and posttransplant outcomes in CF patients. Between 1987-2014, CF patients (N = 4600) underwent 17 liver-pancreas, three lung-pancreas, one liver-lung pancreas, four kidney-pancreas, and three pancreas-only transplants. Of the 303 CF patients who received liver transplantation, 20% had CF-related diabetes (CFRD) before transplantation, and nine of those received a liver-pancreas transplant. Of 4241 CF patients who underwent lung transplantation, 33% had CFRD before transplantation, and three of those received a pancreas transplant. Of 49 CF patients who received a liver-lung transplant, 57% had CFRD before transplantation and one received a pancreas transplant. Posttransplantation diabetes developed in 7% of CF pancreas transplant recipients versus 24% of CF liver and 29% of CF lung recipients. UNOS has no data on pancreas exocrine insufficiency. Two-year posttransplantation survival was 88% after liver-pancreas transplant, 33% after lung-pancreas transplant, and 100% after pancreas-kidney and pancreas-only transplants. Diabetes is common pretransplantation and posttransplantation in CF solid organ transplant recipients, but pancreas transplantation remains rare. Further consideration of pancreas transplant in CF patients undergoing other solid organ transplant may be warranted.

  4. Enhanced low current, voltage, and power dissipation measurements via Arduino Uno microcontroller with modified commercially available sensors

    NASA Astrophysics Data System (ADS)

    Tanner, Meghan; Eckel, Ryan; Senevirathne, Indrajith

    The versatility, simplicity, and robustness of Arduino microcontroller architecture have won a huge following with increasingly serious engineering and physical science applications. Arduino microcontroller environment coupled with commercially available sensors have been used to systematically measure, record, and analyze low currents, low voltages and corresponding dissipated power for assessing secondary physical properties in a diverse array of engineering systems. Setup was assembled via breadboard, wire, and simple soldering with an Arduino Uno with ATmega328P microcontroller connected to a PC. The microcontroller was programmed with Arduino Software while the bootloader was used to upload the code. Commercial Hall effect current sensor modules ACS712 and INA169 current shunt monitor was used to measure corresponding low to ultra-low currents and voltages. Stable measurement data was obtained via sensors and compared with corresponding oscilloscope measurements to assess reliability and uncertainty. Sensor breakout boards were modified to enhance the sensitivity of the measurements and to expand the applicability. Discussion of these measurements will focus on capabilities, capacities and limitations of the systems with examples of possible applications. Lock Haven Nanotechnology Program.

  5. Effect of Donor Ethnicity on Kidney Survival in Different Recipient Pairs– An Analysis of the OPTN/UNOS Database

    PubMed Central

    Callender, C.O.; Cherikh, W.S.; Traverso, P; Hernandez, A.; Oyetunji, T.; Chang, D.

    2010-01-01

    Background Previous multivariate analysis during 4/1/94-12/31/00 from the Organ Procurement Transplant Network/United Network for Organ Sharing (OPTN/UNOS) database has shown that kidneys from Black donors were associated with lower graft survival. We compared graft and patient survival of different kidney donor-to-recipient ethnic combinations to see if this result still holds on a recent cohort of US kidney transplants. Methods 72,495 recipients of deceased and living donor kidney alone transplants from 2001-2005 were included. A multivariate Cox regression method was used to analyze the effect of donor-recipient ethnicity on graft and patient survival within 5 years of transplant, and to adjust for the effect of other donor, recipient and transplant characteristics. Results are presented as hazard ratios (HR) with the 95% confidence limit (CL) and p-values. Results Adjusted HR's of donor-recipient patient survival: White to White (1), White to Black (1.22, p=.001). Graft survival HRS: Black to Black (1.40, p<0.001), Black to White (1.35, p<0.001), Black to Hispanic (0.87, p=0.18), Black to Asian (0.69, p=0.05). Summary Black donor Kidneys are associated with significantly lower graft survival when transplanted into Whites and Blacks and are only associated with lower patient survival when these kidneys are transplanted into White transplant recipients. The graft and patient survival rates for Asian and Latino/Hispanic recipients however were not affected by donor ethnicity. This analysis underscores the need for research to better understand the reasons for these disparities and how to improve the post transplant graft survival rates of Blacks. PMID:20005353

  6. Differential Diagnosis of Malaria on Truelab Uno®, a Portable, Real-Time, MicroPCR Device for Point-Of-Care Applications

    PubMed Central

    Nair, Chandrasekhar Bhaskaran; Manjula, Jagannath; Subramani, Pradeep Annamalai; Nagendrappa, Prakash B.; Manoj, Mulakkapurath Narayanan; Malpani, Sukriti; Pullela, Phani Kumar; Subbarao, Pillarisetti Venkata; Ramamoorthy, Siva; Ghosh, Susanta K.

    2016-01-01

    Background Sensitive and specific detection of malarial parasites is crucial in controlling the significant malaria burden in the developing world. Also important is being able to identify life threatening Plasmodium falciparum malaria quickly and accurately to reduce malaria related mortality. Existing methods such as microscopy and rapid diagnostic tests (RDTs) have major shortcomings. Here, we describe a new real-time PCR-based diagnostic test device at point-of-care service for resource-limited settings. Methods Truenat® Malaria, a chip-based microPCR test, was developed by bigtec Labs, Bangalore, India, for differential identification of Plasmodium falciparum and Plasmodium vivax parasites. The Truenat Malaria tests runs on bigtec’s Truelab Uno® microPCR device, a handheld, battery operated, and easy-to-use real-time microPCR device. The performance of Truenat® Malaria was evaluated versus the WHO nested PCR protocol. The Truenat® Malaria was further evaluated in a triple-blinded study design using a sample panel of 281 specimens created from the clinical samples characterized by expert microscopy and a rapid diagnostic test kit by the National Institute of Malaria Research (NIMR). A comparative evaluation was done on the Truelab Uno® and a commercial real-time PCR system. Results The limit of detection of the Truenat Malaria assay was found to be <5 parasites/μl for both P. falciparum and P. vivax. The Truenat® Malaria test was found to have sensitivity and specificity of 100% each, compared to the WHO nested PCR protocol based on the evaluation of 100 samples. The sensitivity using expert microscopy as the reference standard was determined to be around 99.3% (95% CI: 95.5–99.9) at the species level. Mixed infections were identified more accurately by Truenat Malaria (32 samples identified as mixed) versus expert microscopy and RDTs which detected 4 and 5 mixed samples, respectively. Conclusion The Truenat® Malaria microPCR test is a valuable

  7. Basic atmospheric measurements via Arduino Uno microcontroller with commercially available sensors towards simple real-time weather forecasting for increased classroom engagement

    NASA Astrophysics Data System (ADS)

    Eckel, Ryan; Tanner, Meghan; Senevirathne, Indrajith

    Makers, engineers and the applied physics community have adapted Arduino microcontrollers due to their versatility, robustness and cost effectiveness. Arduino microcontroller environment coupled with commercially available sensors have been used to systematically measure, record and analyze temperature, humidity and barometric pressure for building a simplified weather station for subsequent educational purposes. This data will become available in classroom settings for real-time analysis towards simple weather forecasting. Setup was assembled via breadboard, wire and simple soldering with an Arduino Uno ATmega328P microcontroller connected to a PC. The microcontroller was programmed with Arduino Software while the bootloader was used to upload the code. Commercial DHT22 humidity and temperature sensor, and BMP180 barometric pressure sensor were used to obtain relative humidity, temperature and the barometric pressure. A weather resistant enclosure protected the system while stable real-time data measurements were obtained, and uploaded onto the PC. The data was used to predict atmospheric conditions and lifting condensation level (LCL). Discussion will focus on capabilities and limitations of these systems and corresponding teaching aspects. Lock Haven University Nanotechnology Program.

  8. Infrastructure, logistics and regulation of transplantation: UNOS.

    PubMed

    Heimbach, Julie K

    2013-12-01

    Organ transplantation has evolved into the standard of care for patients with end-stage organ failure. Despite considering increasingly complex transplant recipients for organs recovered from donors with increasing comorbid conditions, 1-year patient survival following kidney transplantation is 97% in the United States, whereas liver transplant recipient 1-year survival is 90%. There were 16,485 kidney recipients in the United States in 2012, and 6256 patients who underwent liver transplantation. The intent of this review is to highlight the logistics required for transplantation as well as reviewing the current oversight of transplantation.

  9. The contribution of IFSI (Istituto di Fisica dello Spazio Interplanetario) to the ISO project

    NASA Astrophysics Data System (ADS)

    Orfei, R.; Baldetti, P.; Ceccarelli, C.; Cerulli, P.; Lorenzetti, D.

    1990-02-01

    IFSI efforts in the development of the long-wavelength spectrometer (LWS) for the IR Space Observatory (ISO), scheduled for launch in 1993, are briefly reviewed. The LWS operates at 45-200 microns with resolution of about 200 (using a grating alone) or about 10,000 (using a grating with one of two Fabry-Perot etalons). Other LWS parameters include FOV 1.5 arcmin, sensitivity 1 x 10 to the -16th W/sq m, and SNR = 10 for a 10-sec high-resolution observation. Particular attention is given to the LWS data-processing unit (DPU), based on an 80C86 CPU and providing telecommand reception at 80 bps, data telemetry at 32,000 bps, detector sampling once every 0.5 msec, control of gratings and etalons, and continuous self-maintenance. Since the orbit of ISO exposes it to the earth radiation belts for about 2 h/day, the DPU is doubled, and the software is completely relocatable. An overview of the software design and a description of the low-noise dc-dc converter are included.

  10. The UNO Aviation Monograph Series: The Airline Quality Rating 1997

    NASA Technical Reports Server (NTRS)

    Bowen, Brent D.; Headley, Dean E.

    1997-01-01

    The Airline Quality Rating (AQR) was developed and first announced in early 1991 as an objective method of comparing airline performance on combined multiple factors important to consumers. Development history and calculation details for the AQR rating system are detailed in The Airline Quality Rating 1991 issued in April, 1991, by the National Institute for Aviation Research at Wichita State University. This current report, Airline Rating 1997, contains monthly Airline Quality Rating scores for 1996. Additional copies are available by contacting Wichita State University or the University of Nebraska at Omaha. The Airline Quality Rating (AQR) 1997 is a summary of a month-by-month quality ratings for the nine major domestic U.S. airlines operating during 1996. Using the Airline Quality Rating system and monthly performance data for each airline for the calendar year of 1996, individual and comparative ratings are reported. This research monograph contains a brief summary of the AQR methodology, detailed data and charts that track comparative quality for major domestic airlines across the 12 month period of 1996, and industry average results. Also comparative Airline Quality Rating data for 1991 through 1995 are included to provide a longer term view of quality in the industry.

  11. The UNO Aviation Monograph Series: The Airline Quality Rating 1998

    NASA Technical Reports Server (NTRS)

    Bowen, Brent D.; Headley, Dean E.

    1998-01-01

    The Airline Quality Rating (AQR) was developed and first announced in early 1991 as an objective method of comparing airline performance on combined multiple factors important to consumers. Development history and calculation details for the AQR rating system are detailed in The Airline Quality Rating 1991 issued in April, 1991, by the National Institute for Aviation Research at Wichita State University. This current report, Airline Quality Rating 1998, contains monthly Airline Quality Rating scores for 1997. Additional copies are available by contacting Wichita State University or University of Nebraska at Omaha. The Airline Quality Rating 1998 is a summary of month-by-month quality ratings for the ten major U.S. airlines operating during 1997. Using the Airline Quality Rating system and monthly performance data for each airline for the calendar year of 1997, individual and comparative ratings are reported. This research monograph contains a brief summary of the AQR methodology, detailed data and charts that track comparative quality for major airlines domestic operations for the 12 month period of 1997, and industry average results. Also, comparative Airline Quality Rating data for 1991 through 1996 are included to provide a longer term view of quality in the industry.

  12. The UNOS Renal Transplant Registry: Review of the Last Decade.

    PubMed

    Andre, Mark; Huang, Edmund; Everly, Matthew; Bunnapradist, Suphamai

    2014-01-01

    Kidney transplantation has become a preferred treatment for end-stage renal disease (ESRD) as transplant recipients enjoy freedom from dialysis and improvement in both quality and quantity of life. More patients are being placed on the transplant waiting list, although the waiting list patients still only represent a very small fraction of ESRD patients. The characteristics of both waitlisted and transplanted patients have changed considerably in the last decade, as the ESRD population has aged and waiting list times have increased. Over the last 10 years, we have witnessed an increasingly severe shortage of kidney donors. Even with increasing efforts of the transplant community to expand the donor pool by including larger numbers of high risk deceased donor transplants, the overall number of kidney transplants has remained relatively stable. Those who do receive transplants, however, benefit from excellent transplant outcomes. The use of paired exchange/chain transplant donors has increased the living donor pool significantly and with outstanding results. Belatacept, a costimulation blockage drug, represents a new class of transplant immunosuppression. It has been used sparingly in the first few years of its approval. Most kidney transplant patients are still maintained on immunosuppressive agents that were approved almost two decades ago. In the next decade, we will certainly continue to deal with an organ shortage as the number of eligible and waitlisted patients is likely to increase. Effective and efficient organ allocation policies will be increasingly necessary to address this scarcity. Optimizing the transplant candidate work-up, improving maintenance of waitlisted patients, and providing optimal post-transplant medical care will be vital to the continued success of kidney transplantation.

  13. E uno plurus: psychoanalytic psychotherapy in the age of pluralism.

    PubMed

    Frosch, James Peter

    2007-01-01

    Until 1970 the dominant theoretical framework in American psychoanalysis was Freudian ego psychology. Since then a number of additional theories, such as object relations theory (including, but not restricted to, the Kleinian approach), self psychology, relational psychoanalysis, and attachment theory have evolved and compete with contemporary ego psychology in the current marketplace of psychoanalytic ideas. There is considerable controversy about whether it is advantageous to work from one theoretical model and apply it to all clinical situations, or whether to utilize all the available paradigms, making judgments about which model or combination of them is most useful in a particular clinical situation or at a particular clinical moment. The latter approach might be termed pluralistic. Though a pluralistic approach is not without its philosophic and practical difficulties, such a perspective is helpful in understanding the complexity of human behavior and in facilitating therapeutic growth. A pluralistic approach is familiar to contemporary psychotherapists, who must utilize multiple frameworks in constructing biopsychosocial formulations of their patients. A pluralistic perspective is advantageous in promoting a therapeutic alliance, since it lends itself to a collaborative therapeutic process with patients. A brief clinical vignette is presented to illustrate these ideas. PMID:18097837

  14. Considerations for screening live kidney donors for endemic infections: a viewpoint on the UNOS policy.

    PubMed

    Levi, M E; Kumar, D; Green, M; Ison, M G; Kaul, D; Michaels, M G; Morris, M I; Schwartz, B S; Echenique, I A; Blumberg, E A

    2014-05-01

    In February 2013, the Organ Procurement and Transplantation Network mandated that transplant centers perform screening of living kidney donors prior to transplantation for Strongyloides, Trypanosoma cruzi and West Nile virus (WNV) infection if the donor is from an endemic area. However, specific guidelines for screening were not provided, such as the optimal testing modalities, timing of screening prior to donation and the appropriate selection of donors. In this regard, the American Society of Transplantation Infectious Diseases Community of Practice, together with disease-specific experts, has developed this viewpoint document to provide guidance for the testing of live donors for Strongyloides, T. cruzi and WNV infection, specifically identifying at-risk populations and testing algorithms, including advantages, limitations and interpretation of results. PMID:24636427

  15. The UNO Aviation Monograph Series: Aviation Security: An Annotated Bibliography of Responses to the Gore Commission

    NASA Technical Reports Server (NTRS)

    Carrico, John S.; Schaaf, Michaela M.

    1998-01-01

    This monograph is a companion to UNOAI Monograph 96-2, "The Image of Airport Security: An Annotated Bibliography," compiled in June 1996. The White House Commission on Aviation Safety and Security, headed by Vice President Al Gore, was formed as a result of the TWA Flight 800 crash in August 1996. The Commission's final report included 31 recommendations addressed toward aviation security. The recommendations were cause for security issues to be revisited in the media and by the aviation industry. These developments necessitated the need for an updated bibliography to review the resulting literature. Many of the articles were written in response to the recommendations made by the Gore Commission. "Aviation Security: An Annotated Bibliography of Responses to the Gore Commission" is the result of this need.

  16. Strategie di rifuto in Italiano: uno studio etnografico (Refusal Strategies in Italian: An Ethnographic Study).

    ERIC Educational Resources Information Center

    Frescura, Marina

    1997-01-01

    After reviewing previous research on speech acts, this article describes a study that analyzed the behavior of speakers of standard Italian in refusing an offer of food. The importance of "face" is explained, and the refusal strategies are classified into four categories: explicit, tactical, decisive, and conclusive. (CFM)

  17. Collegiate Aviation Research and Education Solutions to Critical Safety Issues. UNO Aviation Monograph Series. UNOAI Report.

    ERIC Educational Resources Information Center

    Bowen, Brent, Ed.

    This document contains four papers concerning collegiate aviation research and education solutions to critical safety issues. "Panel Proposal Titled Collegiate Aviation Research and Education Solutions to Critical Safety Issues for the Tim Forte Collegiate Aviation Safety Symposium" (Brent Bowen) presents proposals for panels on the following…

  18. Linea abierta -- Comunicacion en espanol. Nivel Uno (Open Line -- Communication in Spanish. Level One).

    ERIC Educational Resources Information Center

    Dissemination and Assessment Center for Bilingual Education, Austin, TX.

    This text is the first of a series of four units concerning language skills for Spanish speakers of limited English-speaking ability in grades 6-9. The text includes a variety of learning experiences designed to develop competence in the student's cognitive and affective skills derived from the following basic areas: listening, speaking, reading,…

  19. The Aeronautics Education, Research, and Industry Alliance (AERIAL) 2002 Report. UNO Aviation Monograph Series. UNOAI Report.

    ERIC Educational Resources Information Center

    Bowen, Brent D.; Box, Richard C.; Fink, Mary M.; Gogos, George; Lehrer, Henry R.; Narayanan, Ram M.; Nickerson, Jocelyn S.; O'Neil, Patrick D.; Tarry, Scott E.; Vlasek, Karisa D.

    This document contains four papers on aeronautics education, research, and partnerships that partly supported through the Aeronautics Education, Research, and Industry Alliance (AERIAL). The paper "2002 AERIAL Monograph" (Brent D. Bowen, Jocelyn S. Nickerson, Mary M. Fink, et al.) presents an overview of research and development in the following…

  20. Induction Therapy for Lung Transplantation in COPD: Analysis of the UNOS Registry.

    PubMed

    Duffy, Joseph S; Tumin, Dmitry; Pope-Harman, Amy; Whitson, Bryan A; Higgins, Robert S D; Hayes, Don

    2016-10-01

    Although studies demonstrate that induction therapy improves outcomes after lung transplantation, its influence on survival in patients with chronic obstructive pulmonary disease (COPD) is not clear. The United Network for Organ Sharing database was queried to obtain data regarding adult patients with COPD receiving lung transplant between May 2005 and June 2014. Therapies evaluated include anti-thymocyte globulin, anti-lymphocyte globulin, thymoglobulin, basiliximab, and alemtuzumab. Data were categorized based on receiving induction (INDUCED) and no induction (NONE). Kaplan-Meier plots, Cox proportional hazards models of patient survival, and competing-risks regression models for secondary endpoints were utilized. A total of 3,405 patients who underwent lung transplantation for COPD were enrolled with 1,761 (52%) receiving induction therapy. Of INDUCED, 1,146 (65%) received basiliximab, 380 (22%) received alemtuzumab, and 235 (13%) received a polyclonal preparation. The hazard ratio for INDUCED vs. NONE was 0.793 (95% CI = 0.693, 0.909; p = 0.001) in the fully adjusted Cox model. A multivariable competing-risks model also found a protective influence of induction therapy with respect to delayed onset of bronchiolitis obliterans syndrome after transplantation (SHR = 0.801; 95% CI = 0.694, 0.925; p = 0.003). In a cohort of recently transplanted patients with COPD, there appears to be a benefit from contemporary induction agents with no concurrent increase in the risk of death due to infection.

  1. Metrologia: uno sguardo alle grandezze fisiche fondamentali; il Pendolo, il Piano Inclinato e g

    NASA Astrophysics Data System (ADS)

    Sigismondi, Costantino

    2016-07-01

    Metrology studies the standards utilized in physics, we focus on MKS introduced by Giovanni Giorgi at the turn of XIX-XX century. Galileo, the pendulum and the inclined plane are reviewed to obtain the universal g.

  2. Operational aspects of CASA UNO '88-The first large scale international GPS geodetic network

    NASA Technical Reports Server (NTRS)

    Neilan, Ruth E.; Dixon, T. H.; Meehan, Thomas K.; Melbourne, William G.; Scheid, John A.; Kellogg, J. N.; Stowell, J. L.

    1989-01-01

    For three weeks, from January 18 to February 5, 1988, scientists and engineers from 13 countries and 30 international agencies and institutions cooperated in the most extensive GPS (Global Positioning System) field campaign, and the largest geodynamics experiment, in the world to date. This collaborative eperiment concentrated GPS receivers in Central and South America. The predicted rates of motions are on the order of 5-10 cm/yr. Global coverage of GPS observations spanned 220 deg of longitude and 125 deg of latitude using a total of 43 GPS receivers. The experiment was the first civilian effort at implementing an extended international GPS satellite tracking network. Covariance analyses incorporating the extended tracking network predicted significant improvement in precise orbit determination, allowing accurate long-baseline geodesy in the science areas.

  3. Ex Uno Plures: Clonal Reinforcement Drives Evolution of a Simple Microbial Community

    PubMed Central

    Kinnersley, Margie; Wenger, Jared; Kroll, Evgueny; Adams, Julian; Sherlock, Gavin; Rosenzweig, Frank

    2014-01-01

    A major goal of genetics is to define the relationship between phenotype and genotype, while a major goal of ecology is to identify the rules that govern community assembly. Achieving these goals by analyzing natural systems can be difficult, as selective pressures create dynamic fitness landscapes that vary in both space and time. Laboratory experimental evolution offers the benefit of controlling variables that shape fitness landscapes, helping to achieve both goals. We previously showed that a clonal population of E. coli experimentally evolved under continuous glucose limitation gives rise to a genetically diverse community consisting of one clone, CV103, that best scavenges but incompletely utilizes the limiting resource, and others, CV101 and CV116, that consume its overflow metabolites. Because this community can be disassembled and reassembled, and involves cooperative interactions that are stable over time, its genetic diversity is sustained by clonal reinforcement rather than by clonal interference. To understand the genetic factors that produce this outcome, and to illuminate the community's underlying physiology, we sequenced the genomes of ancestral and evolved clones. We identified ancestral mutations in intermediary metabolism that may have predisposed the evolution of metabolic interdependence. Phylogenetic reconstruction indicates that the lineages that gave rise to this community diverged early, as CV103 shares only one Single Nucleotide Polymorphism with the other evolved clones. Underlying CV103's phenotype we identified a set of mutations that likely enhance glucose scavenging and maintain redox balance, but may do so at the expense of carbon excreted in overflow metabolites. Because these overflow metabolites serve as growth substrates that are differentially accessible to the other community members, and because the scavenging lineage shares only one SNP with these other clones, we conclude that this lineage likely served as an “engine” generating diversity by creating new metabolic niches, but not the occupants themselves. PMID:24968217

  4. Re-transplants compared to primary kidney transplants recipients: a mate kidney paired analysis of the OPTN/UNOS database.

    PubMed

    Khalil, Ali K; Slaven, James E; Mujtaba, Muhammad A; Yaqub, Muhammad S; Mishler, Dennis P; Taber, Tim E; Sharfuddin, Asif A

    2016-05-01

    Outcomes of kidney re-transplant recipients (RTR) were compared to primary recipients (FTR) from paired donor kidneys. Organ Procurement and Transplantation Network (OPTN) database was used to identify deceased donors (n = 6266) who donated one kidney to an RTR and the mate kidney to an FTR between January 2000 to December 2010. As compared to FTR, RTR were younger (45 vs. 52 yr, p < 0.001) and had higher proportion of plasma reactive antibody >80 (25% vs 7%, p < 0.001). There were higher 0 mismatches in RTR (19% vs. 16%, p < 0.001). There were more pre-emptive transplants in RTR (24% vs. 21%, p = 0.002). Delayed graft function (28% vs. 25%, p = 0.007) was higher in RTR. Patient survival was similar in FTR and RTR groups at one, three, and five yr (95.7%, 90.2%, and 82.5% vs. 95.2%, 89.8% and 82.7%). Allograft survival rates were higher in FTR group compared to RTR group at one, three, and five yr (91.1%, 82.4%, and 70.9% vs. 87.8%, 77.4%, and 66.1% p < 0.001). Death-censored allograft survival rates were higher in FTR group at one, three, and five yr (91.3%, 82.7% and 71.4% vs. 88%, 77.7% and 66.5% p < 0.001). In today's era of modern immunosuppression, graft survival in RTR has improved but remains inferior to FTR when controlling for donor factors.

  5. La salud en personas con discapacidad intelectual en España: estudio europeo POMONA-II

    PubMed Central

    Martínez-Leal, Rafael; Salvador-Carulla, Luis; Gutiérrez-Colosía, Mencía Ruiz; Nadal, Margarida; Novell-Alsina, Ramón; Martorell, Almudena; González-Gordón, Rodrigo G.; Mérida-Gutiérrez, M. Reyes; Ángel, Silvia; Milagrosa-Tejonero, Luisa; Rodríguez, Alicia; García-Gutiérrez, Juan C.; Pérez-Vicente, Amado; García-Ibáñez, José; Aguilera-Inés, Francisco

    2011-01-01

    Introducción Estudios internacionales demuestran que existe un patrón diferenciado de salud y una disparidad en la atención sanitaria entre personas con discapacidad intelectual (DI) y población general. Objetivo Obtener datos sobre el estado de salud de las personas con DI y compararlos con datos de población general. Pacientes y métodos Se utilizó el conjunto de indicadores de salud P15 en una muestra de 111 sujetos con DI. Los datos de salud encontrados se compararon según el tipo de residencia de los sujetos y se utilizó la Encuesta Nacional de Salud 2006 para comparar estos datos con los de la población general. Resultados La muestra con DI presentó 25 veces más casos de epilepsia y el doble de obesidad. Un 20% presentó dolor bucal, y existió una alta presencia de problemas sensoriales, de movilidad y psicosis. Sin embargo, encontramos una baja presencia de patologías como la diabetes, la hipertensión, la osteoartritis y la osteoporosis. También presentaron una menor participación en programas de prevención y promoción de la salud, un mayor número de ingresos hospitalarios y un uso menor de los servicios de urgencia. Conclusiones El patrón de salud de las personas con DI difiere del de la población general, y éstas realizan un uso distinto de los servicios sanitarios. Es importante el desarrollo de programas de promoción de salud y de formación profesional específicamente diseñados para la atención de personas con DI, así como la implementación de encuestas de salud que incluyan datos sobre esta población. PMID:21948011

  6. The management of ductal intraepithelial neoplasia (DIN): open controversies and guidelines of the Istituto Europeo di Oncologia (IEO), Milan, Italy.

    PubMed

    Farante, Gabriel; Zurrida, Stefano; Galimberti, Viviana; Veronesi, Paolo; Curigliano, Giuseppe; Luini, Alberto; Goldhirsch, Aron; Veronesi, Umberto

    2011-07-01

    The management of ductal intraepithelial neoplasia (DIN) has substantially changed over the past 30 years, as its incidence has increased (from 2-3% to more than 20%), mainly due to the widespread use of mammography screening. This article describes not only the more widespread theoretical concepts on DIN but also the differences in the practical applications of the theory between different countries, different oncology specialists, and different cancer centers. Papers related to the international multicentre-randomized trials and retrospective studies were analyzed. We include articles and papers published between 1993 and 2010 related to patients with DIN, and abstracts and reports from MEDLINE and other sources were indentified. The standard of care for DIN consists of (a) breast conservative surgery (mastectomy is still indicated in large lesions--masses or microcalcifications--in about 30% of cases); (b) radiotherapy (RT) after conservative surgery, and (c) medical treatment in estrogen receptors-positive patients. However, most studies have shown significant differences between theory and practical application. Moreover, there are differences regarding (a) the indications of sentinel lymph node biopsy, (b) the definition and identification of low-risk DIN subgroups that can avoid RT and tamoxifen, and (c) the research into new alternative drugs in adjuvant medical therapy. A general agreement on the best management of DIN does not exist as yet. New large trials are needed in order to define the best management of DIN patients which is (in most respects) still complex and controversial.

  7. Let's Help Each Other. Economic Organization Booklet 3. Teacher's Edition=Ayudemonos uno al otro. Organizacion economica libro 3. Manual para El Maestro.

    ERIC Educational Resources Information Center

    California State Univ., Los Angeles. National Dissemination and Assessment Center.

    The booklet is part of a grade 10-12 social studies series produced for bilingual education. The series consists of six major thematic modules, with four to five booklets in each. The interdisciplinary modules are based on major ideas and designed to help students understand some major human problems and make sound, responsive decisions to improve…

  8. Yo Ciudadano: Un Curriculo de Experiencias para Educacion Civica. Nivel: Uno (Citizen Me: An Experiential Curriculum for Citizenship Education. Level: One).

    ERIC Educational Resources Information Center

    Loftin, Richard

    Integrating concepts of basic citizenship education with community involvement, this experiential curriculum, written in Spanish, provides a means for developing decision making and critical thinking skills within the existing social studies curriculum in grade 1. Using short stories, field trips, and class discussions, the 11 lessons on…

  9. Estudio de los Esquemas Conceptuales y de los Perfiles de Unos Alumnos de Segundo de Bup en Relacion con el Concepto de Pendiente de Una Recta.

    ERIC Educational Resources Information Center

    Gimenez, Carmen Azcarate

    1992-01-01

    Presents a study to determine students' concept of slope carried out in three classes of the second form before introducing the notion of derivative. Discusses the meaning of conceptual framework and reviews literature on slope. Analyzes student responses to a questionnaire for mathematical content and expression and interprets the results. (MDH)

  10. Aerospace Workforce Development: The Nebraska Proposal; and Native View Connections: A Multi-Consortium Workforce Development Proposal. UNO Aviation Monograph Series

    NASA Technical Reports Server (NTRS)

    Bowen, Brent D.; Russell, Valerie; Vlasek, Karisa; Avery, Shelly; Calamaio, Larry; Carstenson, Larry; Farritor, Shane; deSilva, Shan; Dugan, James; Farr, Lynne

    2003-01-01

    The NASA Nebraska Space Grant Consortium (NSGC) continues to recognize the necessity of increasing the quantity and quality of highly skilled graduates and faculty involved with NASA. Through NASA Workforce Development funds awarded in 2002, NSGC spearheaded customer- focused workforce training and higher education, industry and community partnerships that are significantly impacting the state s workforce in the science, technology, engineering, and mathematics (STEM) competencies. NSGC proposes to build upon these accomplishments to meet the steadily increasing demand for STEM skills and to safeguard minority representation in these disciplines. A wide range of workforce development activities target NASA s need to establish stronger connections among higher education, industry, and community organizations. Participation in the National Student Satellite Program (NSSP), Community Internship Program, and Nebraska Science and Technology Recruitment Fair will extend the pipeline of employees benefiting NASA as well as Nebraska. The diversity component of this proposal catapults from the exceptional reputation NSGC has built by delivering geospatial science experiences to Nebraska s Native Americans. For 6 years, NSGC has fostered and sustained partnerships with the 2 tribal colleges and 4 reservation school districts in Nebraska to foster aeronautics education and outreach. This program, the Nebraska Native American Outreach Program (NNAOP), has grown to incorporate more than educational institutions and is now a partnership among tribal community leaders, academia, tribal schools, and industry. The content focus has broadened from aeronautics in the school systems to aerospace technology and earth science applications in tribal community decision-making and workforce training on the reservations. To date, participants include faculty and staff at 4 Nebraska tribal schools, 2 tribal colleges, approximately 1,000 Native American youth, and over 1,200 community members. This Native American Initiative of the NSGC addresses Nebraska workforce development and serves as a model to others. Following a structured evaluation process, NSGC proposes to sustain delivery of the training funded by NASA in 2002 to tribal entities through partnerships linking academic programs and industry leaders.

  11. Coping with Social Change: Programs That Work. Proceedings of a Conference (Acapulco, Mexico, June 1989) = Como enfrentarse al cambio social: programas eficaces. Actas de uno Conferencia (Acapulco, Mexico, Junio de 1989).

    ERIC Educational Resources Information Center

    Hoskins, Irene, Ed.

    Written in English and Spanish, this document contains the proceedings of the 14th International Congress of Gerontology on concerns about the impact of rapid social change on the well-being of older women and families in Latin American and the Caribbean and about effective programs that address the needs of the older populations. The first…

  12. Pancreas Transplantation of US and Non-US Cases from 2005 to 2014 as Reported to the United Network for Organ Sharing (UNOS) and the International Pancreas Transplant Registry (IPTR).

    PubMed

    Gruessner, Angelika C; Gruessner, Rainer W G

    2016-01-01

    This report is an update of pancreas and kidney transplant activities in the US and non-US region in two periods, 2005-2009 and 2010-2014. The aim of the report was to analyze transplant progress and success in the US compared to non-US countries, and to compare trends between the two periods. Between 2005-2009 and 2010-2014, the number of US pancreas transplants declined by over 20%, while the overall number of pancreas transplants performed outside the US has increased. The decline in US numbers is predominantly due to the decline in primary and secondary pancreas after kidney transplants (PAK). During the time period studied, the number of PAK transplants dropped by 50%. In contrast, the number of simultaneous pancreas/kidney transplants (SPK) declined by only 10%, and the number of pancreas transplants alone (PTA) by 20%. Over 90% of pancreas transplants worldwide were performed, with a simultaneous kidney transplant and excellent results. Transplant outcomes in SPK improved significantly because of a decrease in the rates of technical and immunologic graft loss. In 2010-2014 vs. 2005-2009, US SPK transplant patient survival at 1 year post-transplant increased from 95.7% to 97.4%, pancreas graft function from 88.3% to 91.3%, and kidney function from 93.6% to 95.5%. A significant improvement was also noted in PAK transplants. One-year patient survival increased from 96.4% to 97.9% and pancreas graft function from 81.0% to 86.0%. PTA 1-year patient survival remained constant at 97%, and pancreas 1-year graft survival improved from 81.0% to 85.7%. With the decline in the number of transplants, a change towards better pancreas donor selection was observed. In solitary transplants, the donors were primarily young trauma victims, and the pancreas preservation time was relatively short. A general tendency towards transplanting older recipients was noted. In 2010-2014 vs. 2005-2009, PTA recipients 50 years of age or older accounted for 32% vs. 22%, PAK for 28% vs. 22%, and SPK for 22% vs. 20%. This may be due to a relatively lower immunologic graft loss rate, especially in solitary transplants, which historically has been high in young recipients. The number of pancreas transplants in patients with type 2 diabetes and end-stage renal disease has increased, and accounted for 9% of all SPK recipients in 2010-2014.

  13. Severe breathing and swallowing difficulties during routine restorative dentistry.

    PubMed

    Lococo, Filippo; Trabucco, Laura; Leuzzi, Giovanni; Salvo, Fulvio; Paci, Massimiliano; Sgarbi, Giorgio; Ferrari, Anna Maria

    2015-04-30

    Una donna di 57 anni si sottoponeva ad trattamento odontoiatrico per una carie del secondo molare superiore di destra. Durante la visita odontoiatrica veniva utilizzato uno strumento ad aria compressa, secondo lo standard di cura. Improvvisamente, la paziente accusava deglutizione e difficoltà respiratorie ed un notevole gonfiore del viso che coinvolgeva il collo e parzialmente il volto. La paziente veniva pertanto trasportata d’urgenza al Pronto Soccorso con il sospetto di reazione allergica. L’esame clinico rivelava un crepitio palpabile a livello dei tessuti sottocutanei del volto, del collo e della regione pre- sternale senza però rilevare nessun segno di infiammazione, trisma o raccolta di liquidi. Una radiografia del torace prima ed una tomografia computerizzata successivamente confermavano la presenza d’aria nei tessuti molli delle regioni profonde dagli spazi peri-mandibolare e retro-mandibolari e nella zona sub-mascellare e latero –cervicale estendendosi lungo il solco vascolare e nello spazio retrofaringeo discendente fino a livello del mediastino. La paziente veniva quindi sottoposta ad osservazione clinica e monitoraggio respiratorio, e si cominciava la somministrazione endovenosa di antibiotici ad ampio spettro ed analgesici. Il successivo decorso ospedaliero risultava regolare e la paziente veniva dimessa in 5° giornata di ricovero dopo miglioramento del quadro clinico e radiologico. Tre mesi dopo la dimissione, la paziente risultava in buone condizioni cliniche in assenza di recidiva. Come risulta nel caso sopra riportato, l’enfisema sottocutaneo e lo pneumomediastino, sebbene raramente possono essere legati ad alcune manovre odontoiatriche che utilizzano sistemi ad immissione di aria ad alta pressione. Nonostante l’esordio acuto ed la sintomatologia spesso allarmante (al punto da poter essere erroneamente scambiata per una reazione allergica), si tratta di una condizione benigna e sostanzialmente ad auto-risoluzione pur necessitando

  14. Studiar L'inglese dalle elementari--Problema europeo: Una proposta nuova della pedagogia cibernetica (Beginning the Study of English in the Elementary School Grades--A European Problem: A New Proposal from Cibernetic Education).

    ERIC Educational Resources Information Center

    Chiti-Batelli, Andrea

    1986-01-01

    Warns the European community of the dangers of accepting English as the international language and urges the adoption of Esperanto, a neutral language without its own cultural tradition, as the international lingua franca. (CFM)

  15. Bilinguismo e immigrazione: una nota sociolinguistica al piano europeo di mantenimento delle lingue nazionali nelle comunita di emigrati (Bilingualism and Immigration: A Sociolinguistic View of the European Plan for the Maintainance of National Languages in Immigrant Communities).

    ERIC Educational Resources Information Center

    Tosi, Arturo

    1979-01-01

    Outlines the European Economic Community's (EEC) plan for the maintainance of national languages among immigrants. Describes the variety of objectives behind the EEC's linguistic policy as incompatible with the creation of a unified instructional approach. Emphasizes that dialects spoken within immigrant families create additional problems in…

  16. United Network for Organ Sharing

    MedlinePlus

    ... careers About ABOUT UNOS Mission, vision and values Strategic goals History of UNOS Leadership Governance Financials Annual report SERVICES Education and training Research and data analytics Technology services Meeting planning Advertising Online store NEWS Media toolkit Subscribe to ...

  17. Consumption of functional foods in Europe; a systematic review.

    PubMed

    Özen, Asli E; Bibiloni, María del Mar; Pons, Antoni; Tur, Josep A

    2014-03-01

    Objetivo: Evaluar las diferencias en el consumo de alimentos funcionales entre los países europeos. Diseño: Revisión sistemática. La búsqueda bibliográfica se realizó en Medlars Online International Literature (MEDLINE), vía PubMed©, y Scopus. Se identificaron veintidós estudios que examinaron las diferencias en el consumo de alimentos funcionales entre los europeos. Resultados: Existen diferencias en la proporción de consumidores de alimentos funcionales entre los países europeos. Así, mientras los alimentos funcionales son muy populares en la mayoría de los países europeos como Finlandia, Suecia, Países Bajos, Polonia, España y Chipre, en algunos países como Dinamarca, Italia y Bélgica no lo son tanto. Un elevado porcentaje de adolescentes europeos mediterráneos (España y Chipre, pero no Italia) consume alimentos funcionales. La evaluación del consumo de alimentos funcionales en función del género es difícil, pues los resultados varían de estudio a estudio. Conclusiones: En los últimos años se ha extendido el consumo de alimentos funcionales en Europa, pero dicho consumo muestra grandes diferencias entre los europeos. Más investigaciones serán necesarias para averiguar las razones subyacentes tras estas diferencias y entender las necesidades de los consumidores de alimentos funcionales.

  18. Venus Express Italian Day on 4 October

    NASA Astrophysics Data System (ADS)

    2004-09-01

    Venus Express is the first European mission to this, the second planet in the Solar System. Often referred to as ‘Earth’s twin’, Venus holds many mysteries that intrigue scientists. The main question is why a planet similar to Earth in size, mass and composition could have evolved so differently over the course of the last four thousand million years. Venus Express will make the first multispectral global examination of the atmosphere of Venus. Completely different from the one around Earth, the Venusian atmosphere appears to be hot and dense. Venus Express will investigate the choking ‘greenhouse’ effect, the hurricane-force winds that encircle the planet, and its mysteriously weak magnetic field. Completion of assembly of the Venus Express spacecraft, including integration and testing of the flight equipment and experiments, is an important milestone. Scheduled for launch on 26 October 2005, Venus Express is currently being made ready for shipment to Astrium, ESA’s prime contractor, in Toulouse, France in mid-October this year. There, further tests to prove the spacecraft's flight readiness will take place. The programme of the event is as follows: 10:30 - Welcoming addresses L.M. Quaglino, Director of Alenia Spazio Infrastructures and Scientific Satellites M. Coradini, ESA Solar System Missions Coordinator 10:45 - ESA presentations The Venus Express project, D. McCoy, ESA Project Manager for Venus Express The Scientific Mission, H. Svedhem, ESA Project Scientist for Venus Express 11:30 - Alenia Spazio: Role and activities on Venus Express G. Finocchiaro and M. Patroncini, Alenia Spazio Project Management for Venus Express The presentations will be followed by a visit to the Venus Express Hardware and a Q & A session. The programme will be concluded with a buffet lunch at 13:00.

  19. A Qualitative Assessment of Students' Experiences of Studying Music: A Spanish Perspective on the European Credit Transfer System (ECTS)

    ERIC Educational Resources Information Center

    Faubel, Jose Maria Esteve; Valero, Miguel Angel Molina; Stephens, Jonathan

    2009-01-01

    The purpose of this investigation is to evaluate whether or not the allocation of time proposed in the Music Study Guide, adapted from the Espacio Europeo de Educacion Superior (European Higher Education Area) guidelines, is consistent and adequate for students with a minimal musical knowledge. The data for this study arise from a…

  20. Space simulation techniques and facilities for SAX STM test campaign

    NASA Technical Reports Server (NTRS)

    Giordano, Pietro; Raimondo, Giacomo; Messidoro, Piero

    1994-01-01

    SAX is a satellite for X-Ray astronomy. It is a major element of the overall basic Science Program of the Italian Space Agency (ASI) and is being developed with the contribution of the Netherlands Agency for Aerospace Programs (NIVR). The scientific objectives of SAX are to carry out systematic and comprehensive observations of celestial X-Ray sources over the 0.1 - 300 KeV energy range with special emphasis on spectral and timing measurements. The satellite will also monitor the X-Ray sky to investigate long-term source variability and to permit localization and study of X-Ray transients. Alenia Spazio is developing the satellite that is intended for launch in the second half of 1995 in a low, near-equatorial Earth orbit. At system level a Structural Thermal Model (STM) has been conceived to verify the environmental requirements by validating the mechanical and thermal analytical models and qualifying satellite structure and thermal control. In particular, the following tests have been carried out in Alenia Spazio, CEA/CESTA and ESTEC facilities: Modal Survey, Centrifuge, Acoustic, Sinusoidal/Random Vibration and Thermal Balance. The paper, after a short introduction of the SAX satellite, summarizes the environmental qualification program performed on the SAX STM. It presents test objectives, methodologies and relevant test configurations. Peculiar aspects of the test campaign are highlighted. Problems encountered and solutions adopted in performing the tests are described as well. Furthermore, test results are presented and assessed.

  1. Space simulation techniques and facilities for SAX STM test campaign

    NASA Astrophysics Data System (ADS)

    Giordano, Pietro; Raimondo, Giacomo; Messidoro, Piero

    1994-11-01

    SAX is a satellite for X-Ray astronomy. It is a major element of the overall basic Science Program of the Italian Space Agency (ASI) and is being developed with the contribution of the Netherlands Agency for Aerospace Programs (NIVR). The scientific objectives of SAX are to carry out systematic and comprehensive observations of celestial X-Ray sources over the 0.1 - 300 KeV energy range with special emphasis on spectral and timing measurements. The satellite will also monitor the X-Ray sky to investigate long-term source variability and to permit localization and study of X-Ray transients. Alenia Spazio is developing the satellite that is intended for launch in the second half of 1995 in a low, near-equatorial Earth orbit. At system level a Structural Thermal Model (STM) has been conceived to verify the environmental requirements by validating the mechanical and thermal analytical models and qualifying satellite structure and thermal control. In particular, the following tests have been carried out in Alenia Spazio, CEA/CESTA and ESTEC facilities: Modal Survey, Centrifuge, Acoustic, Sinusoidal/Random Vibration and Thermal Balance. The paper, after a short introduction of the SAX satellite, summarizes the environmental qualification program performed on the SAX STM. It presents test objectives, methodologies and relevant test configurations. Peculiar aspects of the test campaign are highlighted. Problems encountered and solutions adopted in performing the tests are described as well. Furthermore, test results are presented and assessed.

  2. Case Study of Risk Mitigation Based on Hardware/Software Integration (HSI) Testing for the International Space Station (ISS) Node 2 Module

    NASA Technical Reports Server (NTRS)

    Holt, James Mike; Clanton, Stephen Edward

    2004-01-01

    Within the pressurized elements of the International Space Station (ISS), requirements exist to ensure a safe, habitable environment for the crew. In order to provide this environment, thermal control components work in conjunction with software controls to provide heat rejection for subsystem avionics equipment, for the environmental control system and for experiment payloads. It is essential to ISS operations, mission success and crew safety that necessary testing incorporates the extreme conditions to ensure proper performance. This paper provides a general description and methodology applied to thermal related Hardware/Software Integration (HSI) tests for the ISS Node 2 module. A detailed test plan was developed and implemented with two objectives: the first was for risk mitigation of the thermal control algorithms and software qualification, and the second was for data collection which will substantiate thermalhydraulic models of the Internal Active Thermal Control System (IATCS). Analytical models are utilized to determine on-orbit performance for conditions and scenarios where the simulation of actual on-orbit system performance is limited by test configuration constraints. Node 2 IATCS HSI activities were performed at the Alenia Spazio facility in Torino, Italy with participation from the National Aeronautics and Space Administration (NASA), Alenia Spazio, Jacobs Engineering Sverdrup (JE Sverdrup) and Boeing.

  3. Accelerated Schools Centers: How To Address Challenges to Institutionalization and Growth.

    ERIC Educational Resources Information Center

    Meza, James, Jr.

    The Accelerated Schools Project (ASP) at the University of New Orleans (UNO) was established in spring 1990, funded by a 3-year grant from Chevron. Beginning with 1 pilot school in 1991, the UNO Accelerated Schools Center has expanded to 36 schools representing 19 school districts in Louisiana and 3 schools from the Memphis City Schools district.…

  4. Volunteer Program Assessment at the University of Nebraska at Omaha: A Metropolitan University's Collaboration with Rural and Spanish-Speaking Volunteers

    ERIC Educational Resources Information Center

    Scherer, Lisa L.; Graeve-Cunningham, Victoria M.; Trent, Sheridan B.; Weddington, Stephanie A.; Thurley, Adam R.; Prange, Kelly A.; Allen, Joseph A.

    2016-01-01

    The Volunteer Program Assessment at UNO (VPA-UNO), a faculty-led student group, partners with nonprofit and governmental agencies to provide free assessments and consultations to enhance volunteer engagement, organizational commitment and retention. Three recent initiatives are discussed representing an intentional effort of a metropolitan…

  5. VII Workshop Italiano sulla fisica pp a LHC

    NASA Astrophysics Data System (ADS)

    LHCpp2016 è la settima edizione dell'incontro nazionale sulla fisica p-p a LHC. Questa serie di incontri è nata a Pisa nel 2003 con lo scopo di stimolare lo scambio di idee tra le comunità sperimentali di ATLAS, CMS e LHCB e la comunità teorica. Caratteristica fondamentale di questi incontri è la preparazione di larga parte dei talk in collaborazione tra i vari esperimenti e la comunità teorica. Largo spazio nella preparazione e presentazione dei talk viene dato ai giovani ricercatori. In questa settima edizione, che si tiene di nuovo a Pisa, vogliamo concentrare l'attenzione sulle potenzialità di scoperta offerte dai dati raccolti durante il runII di LHC.

  6. Lunar astrobiology: a review and suggested laboratory equipment.

    PubMed

    Gronstal, Aaron; Cockell, Charles S; Perino, Maria Antonietta; Bittner, Tobias; Clacey, Erik; Clark, Olathe; Ingold, Olivier; Alves de Oliveira, Catarina; Wathiong, Steven

    2007-10-01

    In October of 2005, the European Space Agency (ESA) and Alcatel Alenia Spazio released a "call to academia for innovative concepts and technologies for lunar exploration." In recent years, interest in lunar exploration has increased in numerous space programs around the globe, and the purpose of our study, in response to the ESA call, was to draw on the expertise of researchers and university students to examine science questions and technologies that could support human astrobiology activity on the Moon. In this mini review, we discuss astrobiology science questions of importance for a human presence on the surface of the Moon and we provide a summary of key instrumentation requirements to support a lunar astrobiology laboratory.

  7. Lunar astrobiology: a review and suggested laboratory equipment.

    PubMed

    Gronstal, Aaron; Cockell, Charles S; Perino, Maria Antonietta; Bittner, Tobias; Clacey, Erik; Clark, Olathe; Ingold, Olivier; Alves de Oliveira, Catarina; Wathiong, Steven

    2007-10-01

    In October of 2005, the European Space Agency (ESA) and Alcatel Alenia Spazio released a "call to academia for innovative concepts and technologies for lunar exploration." In recent years, interest in lunar exploration has increased in numerous space programs around the globe, and the purpose of our study, in response to the ESA call, was to draw on the expertise of researchers and university students to examine science questions and technologies that could support human astrobiology activity on the Moon. In this mini review, we discuss astrobiology science questions of importance for a human presence on the surface of the Moon and we provide a summary of key instrumentation requirements to support a lunar astrobiology laboratory. PMID:17963476

  8. New Testing Standard For European Programs

    NASA Astrophysics Data System (ADS)

    Giordano, P.

    2004-08-01

    Standardization is a key aspect of the production business committed to the optimization of the product development and cost. In the Space field, American industries and Government organizations have developed since several decades Space standards like the MIL series, deriving them from the aircraft and military fields, or the NASA standards. The same happened later in other countries like Russia, Japan and China. In the last years most of those standards were revised to cope with the emerging needs of the market. In Europe, the Space activities were generally managed by a set of ESA standards, the PSS, which covered some aspects of these activities and reflected the up-to-date approaches and common practices. But, in the last years an initiative was also promoted by ESA, National Agencies and Space Organizations, named ECSS (European Cooperation for Space Standardization), with the aim to develop a coherent, single set of user-friendly standards for use in all European space activities. European industries supported this initiative, including a deep involvement of Alenia Spazio and, sometime through a suitable revision of the old PSS documents, new standards were defined, as for the "Testing" (ECSS-E-10-03A, now published). The ECSS-E-10-03A provides standard environmental and performance test requirements for space products (systems and their constituents) which are generally applicable to all projects. Scope of this paper is to present the status of the worldwide initiatives in the testing standardization, the major contents of the European ECSS Testing standard and the possibilities for tailoring. Differences in requirement definition with other international testing standards and proposals for further ECSS optimization are presented on the basis of Alenia Spazio experience in supporting the above initiatives.

  9. Mini pressurized logistics module (MPLM)

    NASA Astrophysics Data System (ADS)

    Vallerani, E.; Brondolo, D.; Basile, L.

    1996-06-01

    The MPLM Program was initiated through a Memorandum of Understanding (MOU) between the United States' National Aeronautics and Space Administration (NASA) and Italy's ASI, the Italian Space Agency, that was signed on 6 December 1991. The MPLM is a pressurized logistics module that will be used to transport supplies and materials (up to 20,000 lb), including user experiments, between Earth and International Space Station Alpha (ISSA) using the Shuttle, to support active and passive storage, and to provide a habitable environment for two people when docked to the Station. The Italian Space Agency has selected Alenia Spazio to develop MPLM modules that have always been considered a key element for the new International Space Station taking benefit from its design flexibility and consequent possible cost saving based on the maximum utilization of the Shuttle launch capability for any mission. In the frame of the very recent agreement between the U.S. and Russia for cooperation in space, that foresees the utilization of MIR 1 hardware, the Italian MPLM will remain an important element of the logistics system, being the only pressurized module designed for re-entry. Within the new scenario of anticipated Shuttle flights to MIR 1 during Space Station phase 1, MPLM remains a candidate for one or more missions to provide MIR 1 resupply capabilities and advanced ISSA hardware/procedures verification. Based on the concept of Flexible Carriers, Alenia Spazio is providing NASA with three MPLM flight units that can be configured according to the requirements of the Human-Tended Capability (HTC) and Permanent Human Capability (PHC) of the Space Station. Configurability will allow transportation of passive cargo only, or a combination of passive and cold cargo accommodated in R/F racks. Having developed and qualified the baseline configuration with respect to the worst enveloping condition, each unit could be easily configured to the passive or active version depending upon the

  10. Can I Donate My Organs If I've Had Cancer?

    MedlinePlus

    ... To learn more National organizations and websites* United Network for Organ Sharing (UNOS) Toll-free number: 1- ... MA, Delmonici FL. First report of the United Network for Organ Sharing Transplant Tumor Registry: Donors with ...

  11. Heartrending Choices.

    ERIC Educational Resources Information Center

    Dunn, Patricia C.; Marple, Jennifer; Knight, Sharon M.

    2000-01-01

    Explains the responsibilities of the United Network for Organ Sharing (UNOS) and its decision making process as to who receives an organ for transplant. Presents an activity exploring ethics, human values, and human anatomy. (YDS)

  12. U.S. Transplantation Data

    MedlinePlus

    ... and families For professionals Select Page UNOS > Data Data Every ten minutes, someone is added to the ... June 2016 as of 07/29/2016 National data Transplants By Organ Type January 1, 1988 - June ...

  13. Ukrainian network of Optical Stations for man-made space objects observation

    NASA Astrophysics Data System (ADS)

    Sybiryakova, Yevgeniya

    2016-07-01

    The Ukrainian Network of Optical Stations (UNOS) for man-made objects research was founded in 2012 as an association of professional astronomers. The main goals of network are: positional and photometric observations of man-made space objects, calculation of orbital elements, research of shape and period of rotation. The network consists of 8 stations: Kiev, Nikolaev, Odesa, Uzhgorod, Lviv, Yevpatoriya, Alchevsk. UNOS has 12 telescopes for observation of man-made space objects. The new original methods of positional observation were developed for optical observation of geosynchronous and low earth orbit satellites. The observational campaigns of LEO satellites held in the network every year. The numerical model of space object motion, developed in UNOS, is using for orbit calculation. The results of orbital elements calculation are represented on the UNOS web-site http://umos.mao.kiev.ua/eng/. The photometric observation of selected objects is also carried out in network.

  14. [DEMOCOPHES SPAIN AND ITS CONTRIBUTION TO THE HARMONIZATION OF EUROPEAN HUMAN BIOMONITORING].

    PubMed

    Esteban López, Marta; López Martín, Estrella; Rodríguez García, Carolina; Posada De la Paz, Manuel; Castaño Calvo, Argelia

    2015-07-01

    Objetivo: contribuir a la armonización europea de la biovigilancia en humanos (proyecto DEMOCOPHES) demostrando la utilidad de los estudios de biovigilancia para valorar la influencia de la dieta y los estilos de vida como vía de exposición a contaminantes ambientales. Métodos: se adaptó el protocolo europeo a las necesidades nacionales, siguiendo los controles de calidad definidos en él y sin comprometer la obtención de datos comparables entre los países participantes. Resultados: la adaptación nacional del protocolo europeo no presentó grandes dificultades y, salvo mínimas modificaciones, se respetó el diseño original del estudio. Participaron 134 parejas madre-hijo, seleccionados en un colegio de Añover de Tajo (Toledo) y tres colegios de Madrid. Los voluntarios donaron una muestra de pelo y de orina y contestaron a las preguntas del cuestionario epidemiológico. Se observaron diferencias significativas en la participación de los voluntarios en las dos localizaciones de muestreo. Discusión: la estandarización de todas las etapas de un estudio de biovigilancia en humanos es esencial para su desarrollo armonizado a escala internacional. Los resultados obtenidos han contribuido a la obtención de datos sobre exposición ambiental, por primera vez comparables en 17 países europeos, y han permitido observar diferencias relacionadas con la dieta y los hábitos de vida. Las experiencias y el material de trabajo desarrollado para el estudio piloto serán aplicables al diseño e implementación de futuros estudios de HBM.

  15. A Review of the Electronic Coursework Efforts of the University of Nebraska-Omaha in the Earth System Science Education Alliance

    NASA Astrophysics Data System (ADS)

    Shuster, R. D.; Grandgenett, N.

    2007-12-01

    The University of Nebraska at Omaha has been a state leader in helping Nebraska teachers embrace earth systems science education, with a special emphasis in online coursework. UNO was one of the initial members in the Earth Systems Science Education Alliance (ESSEA) and has offered three different ESSEA courses, with a total of 167 students having taken ESSEA courses at UNO for graduate credit. UNO is currently involved in expanding its earth system science courses, modules, and educational research. We are also integrating these courses into several degree programs, including a Masters of Science in Education, a new Middle School Endorsement, a Certificate in Urban Education, and the Graduate Program for the Department of Geography/Geology. UNO is beginning to examine teacher content learning and science reasoning within its coursework. Feedback surveys from earlier ESSEA offerings already indicate a strongly positive perception of the courses by the teachers enrolled in the coursework. Project impact has been documented in teacher projects, quotes, and lessons associated with the coursework activities. We will describe the UNO earth system science efforts (emphasizing ESSEA coursework), and describe past efforts and teacher perceptions, as well as new strategies being undertaken to more closely examine content learning and science reasoning impact with course participants. We will also describe online course modules being developed within the UNO online course efforts, including one on the global amphibian crisis, and also the impact of urbanization on a local native prairie environment.

  16. Columbus Verification Control Approach Versus Micro-gravity Requirement.

    NASA Astrophysics Data System (ADS)

    Marucchi-Chierro, P.; Martini, M.

    2004-08-01

    The European project manned module Columbus, as part of the International Space Station has been conceived to allow scientific experiments on micro- gravity environment. In order to face against this challenging Design goal, Alenia Spazio developed a dedicated control approach, based on budget allocation of the mechanical power, covering the design, the Analysis and the Verification aspects from system level down to the equipment one. This Control method covers both the evaluations by analysis and/or by testing of the Columbus Structural and Vibro-acoustic transmission paths and the characterization of the disturbers (as Environment Control Life System fans, Thermal Control System pumps and valves, etc.) in terms of force at the equipment interfaces and Sound power Level emitted by the disturbers in the surrounding volume. A dedicated methodology on how to derive the induced disturber's interface forcing functions has been developed in the frame of this project.This paper reports the most significant outcomes during the whole verification and test process at equipment and system level for the derivation of the disturber forcing function. The originality of the method is based on the fact that in the frame of the Columbus Design/Verification cycle, testing has been done at equipment and at system level for the : a) derivation of the equipment Forcing Function when installed on a reference base-plate b) derivation of the disturbers Forcing function when installed o Columbus in the frame of the complete Micro-gravity System Test that allowed both the characterization of : - the structural and the vibro-acoustic system transmissibility by the use of artificial exciters (as shakers and sound source) - the micro-gravity Environment by the Columbus disturbers activation c) Definition of a combination method of forcing function in order to get similar results coming function in order to get similar results coming from both the equipment characterization standing- alone and

  17. G. Marconi: A Data Relay Satellite for Mars Communications

    NASA Astrophysics Data System (ADS)

    Dionisio, C.; Marcozzi, M.; Landriani, C.

    2002-01-01

    Ascent Vehicle launch and Orbiting Sample Canister detection for the Mars Sample Return mission. The GMO mission is a close collaboration between the Italian and American national space agencies and two implementing organizations: Alenia Spazio in Italy and JPL in the United States. As the Italian prime contractor, Alenia Spazio is to design and fabricate the spacecraft bus, integrate the Italian and JPL payloads, support integration of the spacecraft with the launch vehicle, support launch, and conduct mission operations. GMO will use Alenia' s PRIMA spacecraft bus in a deep space configuration. The PRIMA bus is a new design concept, developed under ASI funding, that combines flexibility, low cost and high efficiency. Its modular design makes it adaptable for several classes of missions, including interplanetary.

  18. Selection of active spaces for multiconfigurational wavefunctions

    SciTech Connect

    Keller, Sebastian; Boguslawski, Katharina; Reiher, Markus; Janowski, Tomasz; Pulay, Peter

    2015-06-28

    The efficient and accurate description of the electronic structure of strongly correlated systems is still a largely unsolved problem. The usual procedures start with a multiconfigurational (usually a Complete Active Space, CAS) wavefunction which accounts for static correlation and add dynamical correlation by perturbation theory, configuration interaction, or coupled cluster expansion. This procedure requires the correct selection of the active space. Intuitive methods are unreliable for complex systems. The inexpensive black-box unrestricted natural orbital (UNO) criterion postulates that the Unrestricted Hartree-Fock (UHF) charge natural orbitals with fractional occupancy (e.g., between 0.02 and 1.98) constitute the active space. UNOs generally approximate the CAS orbitals so well that the orbital optimization in CAS Self-Consistent Field (CASSCF) may be omitted, resulting in the inexpensive UNO-CAS method. A rigorous testing of the UNO criterion requires comparison with approximate full configuration interaction wavefunctions. This became feasible with the advent of Density Matrix Renormalization Group (DMRG) methods which can approximate highly correlated wavefunctions at affordable cost. We have compared active orbital occupancies in UNO-CAS and CASSCF calculations with DMRG in a number of strongly correlated molecules: compounds of electronegative atoms (F{sub 2}, ozone, and NO{sub 2}), polyenes, aromatic molecules (naphthalene, azulene, anthracene, and nitrobenzene), radicals (phenoxy and benzyl), diradicals (o-, m-, and p-benzyne), and transition metal compounds (nickel-acetylene and Cr{sub 2}). The UNO criterion works well in these cases. Other symmetry breaking solutions, with the possible exception of spatial symmetry, do not appear to be essential to generate the correct active space. In the case of multiple UHF solutions, the natural orbitals of the average UHF density should be used. The problems of the UNO criterion and their potential solutions

  19. Selection of active spaces for multiconfigurational wavefunctions

    NASA Astrophysics Data System (ADS)

    Keller, Sebastian; Boguslawski, Katharina; Janowski, Tomasz; Reiher, Markus; Pulay, Peter

    2015-06-01

    The efficient and accurate description of the electronic structure of strongly correlated systems is still a largely unsolved problem. The usual procedures start with a multiconfigurational (usually a Complete Active Space, CAS) wavefunction which accounts for static correlation and add dynamical correlation by perturbation theory, configuration interaction, or coupled cluster expansion. This procedure requires the correct selection of the active space. Intuitive methods are unreliable for complex systems. The inexpensive black-box unrestricted natural orbital (UNO) criterion postulates that the Unrestricted Hartree-Fock (UHF) charge natural orbitals with fractional occupancy (e.g., between 0.02 and 1.98) constitute the active space. UNOs generally approximate the CAS orbitals so well that the orbital optimization in CAS Self-Consistent Field (CASSCF) may be omitted, resulting in the inexpensive UNO-CAS method. A rigorous testing of the UNO criterion requires comparison with approximate full configuration interaction wavefunctions. This became feasible with the advent of Density Matrix Renormalization Group (DMRG) methods which can approximate highly correlated wavefunctions at affordable cost. We have compared active orbital occupancies in UNO-CAS and CASSCF calculations with DMRG in a number of strongly correlated molecules: compounds of electronegative atoms (F2, ozone, and NO2), polyenes, aromatic molecules (naphthalene, azulene, anthracene, and nitrobenzene), radicals (phenoxy and benzyl), diradicals (o-, m-, and p-benzyne), and transition metal compounds (nickel-acetylene and Cr2). The UNO criterion works well in these cases. Other symmetry breaking solutions, with the possible exception of spatial symmetry, do not appear to be essential to generate the correct active space. In the case of multiple UHF solutions, the natural orbitals of the average UHF density should be used. The problems of the UNO criterion and their potential solutions are discussed

  20. Selection of active spaces for multiconfigurational wavefunctions.

    PubMed

    Keller, Sebastian; Boguslawski, Katharina; Janowski, Tomasz; Reiher, Markus; Pulay, Peter

    2015-06-28

    The efficient and accurate description of the electronic structure of strongly correlated systems is still a largely unsolved problem. The usual procedures start with a multiconfigurational (usually a Complete Active Space, CAS) wavefunction which accounts for static correlation and add dynamical correlation by perturbation theory, configuration interaction, or coupled cluster expansion. This procedure requires the correct selection of the active space. Intuitive methods are unreliable for complex systems. The inexpensive black-box unrestricted natural orbital (UNO) criterion postulates that the Unrestricted Hartree-Fock (UHF) charge natural orbitals with fractional occupancy (e.g., between 0.02 and 1.98) constitute the active space. UNOs generally approximate the CAS orbitals so well that the orbital optimization in CAS Self-Consistent Field (CASSCF) may be omitted, resulting in the inexpensive UNO-CAS method. A rigorous testing of the UNO criterion requires comparison with approximate full configuration interaction wavefunctions. This became feasible with the advent of Density Matrix Renormalization Group (DMRG) methods which can approximate highly correlated wavefunctions at affordable cost. We have compared active orbital occupancies in UNO-CAS and CASSCF calculations with DMRG in a number of strongly correlated molecules: compounds of electronegative atoms (F2, ozone, and NO2), polyenes, aromatic molecules (naphthalene, azulene, anthracene, and nitrobenzene), radicals (phenoxy and benzyl), diradicals (o-, m-, and p-benzyne), and transition metal compounds (nickel-acetylene and Cr2). The UNO criterion works well in these cases. Other symmetry breaking solutions, with the possible exception of spatial symmetry, do not appear to be essential to generate the correct active space. In the case of multiple UHF solutions, the natural orbitals of the average UHF density should be used. The problems of the UNO criterion and their potential solutions are discussed

  1. Adaptive Observations At Ncep: Past, Present, and Future

    NASA Astrophysics Data System (ADS)

    Toth, Z.; Szunyogh, I.; Bishop, C.; Majumdar, S.; Moskaitis, J.; Lord, S.

    The RadioScience experiments proposed for the BepiClombo ESA CORNERSTONE are aiming at performing planetary measurements such as: the rotation state of Mer- cury, the global structure of its gravity field and the local gravitational anomalies, but also to test some aspects of the General Relativity, to an unprecedented level of accu- racy. A high sensitivity accelerometer will measure the inertial acceleration acting on the MPO; these data, together with tracking data are used to evaluate the purely gravi- tational trajectory of the MPO, by transforming it to a virtual drag-free satellite system. At the Istituto di Fisica dello Spazio Interplanetario (IFSI) a high sensitive accelerom- eter named ISA (Italian Spring Accelerometer)* and considered for this mission has been studied. The main problems concerning the use of the accelerometer are related to the high dynamics necessary to follow the variation of the acceleration signals, with accuracy equal to 10^-9 g/sqr(Hz), and very high at the MPO orbital period and due to thermal noise introduced at the sidereal period of Mercury. The description of the accelerometer will be presented, with particular attention to the thermal problems and to the analysis regarding the choice of the mounting position on the MPO. *Project funded by the Italian Space Agency (ASI).

  2. Signals and Noises Acting On The Accelerometer Mounted In The Mpo (mercury Planetary Orbiter).

    NASA Astrophysics Data System (ADS)

    Iafolla, V.; Fiorenza, E.; Lucchesi, D.; Milyukov, V.; Nozzoli, S.

    The RadioScience experiments proposed for the BepiClombo ESA CORNERSTONE are aiming at performing planetary measurements such as: the rotation state of Mer- cury, the global structure of its gravity field and the local gravitational anomalies, but also to test some aspects of the General Relativity, to an unprecedented level of accu- racy. A high sensitivity accelerometer will measure the inertial acceleration acting on the MPO; these data, together with tracking data are used to evaluate the purely gravi- tational trajectory of the MPO, by transforming it to a virtual drag-free satellite system. At the Istituto di Fisica dello Spazio Interplanetario (IFSI) a high sensitive accelerom- eter named ISA (Italian Spring Accelerometer)* and considered for this mission has been studied. The main problems concerning the use of the accelerometer are related to the high dynamics necessary to follow the variation of the acceleration signals, with accuracy equal to 10^-9 g/sqr(Hz), and very high at the MPO orbital period and due to thermal noise introduced at the sidereal period of Mercury. The description of the accelerometer will be presented, with particular attention to the thermal problems and to the analysis regarding the choice of the mounting position on the MPO. *Project funded by the Italian Space Agency (ASI).

  3. Italian spring accelerometer (ISA) a high sensitive accelerometer for ``BepiColombo'' ESA CORNERSTONE

    NASA Astrophysics Data System (ADS)

    Iafolla, V.; Nozzoli, S.

    2001-12-01

    The targets of the ESA CORNERSTONE mission to Mercury "BepiColombo" are concerned with both planetary and magnetospheric physics and to test some aspects of the general relativity. A payload devoted to a set of experiments named radio science is located within one of the three proposed modules, the Mercury Planetary Orbiter (MPO). In particular, a high sensitivity accelerometer ( a min<10 -9√g/ Hz in the range 10 -4- 10 -1 Hz) will measure the inertial acceleration acting on the MPO. Such data, together with tracking data are used to evaluate the purely gravitational trajectory of the MPO, transforming it to a virtual drag-free satellite system. The ISA accelerometer, considered for this mission, is a well-studied instrument developed at the Istituto di Fisica dello Spazio Interplanetario (IFSI), with the financial support of the Agenzia Spaziale Italiana (ASI). A prototype of such an instrument was constructed, matching the requirements of the radio science experiment. Results of the study concerning the use of ISA in the BepiColombo mission are reported here, particular care being devoted to the description of the instrument and to its sensitivity and thermal stabilisation.

  4. ISO Guest Observer Data Analysis and LWS Instrument Team Activities

    NASA Technical Reports Server (NTRS)

    Smith, Howard

    2001-01-01

    The following is an interim annual report. Dr. Smith is currently on an extended TDY to the Istituto di Fisica dello Spazio Interplanetario (IFSI) at the Consilio Nazionale delle Richerche (CNR) in Rome, Italy, where he has been working on a related NASA grant in support of analysis of Infrared Space Observatory (ISO) data on star formation in Ultra Luminous Infrared Galaxies and our galaxy. Work emphasizes development of metal mesh grids for use in spacecraft, and the design and fabrication of test elements by the Naval Research Laboratory, Washington D.C. Work has progressed well, but slowly, on that program due to the departure of a key engineer. NASA has been advised of the delay, and granted a no-cost extension, whereby SAO has authorized a delay in the final report from NRL. Nevertheless NRL has continued to make progress. Two papers have been submitted to refereed journals related to this program, and a new design for mesh operating in the 20-40 micron region has been developed. Meetings continue through the summer on these items. A new technical scientist has been made a job offer and hopefully will be on board NRL shortly, although most of the present grant work is already completed. A more complete report, with copies of the submitted papers, designs, and other measures of progress, will be submitted to NASA in September when Dr. Smith returns from his current TDY.

  5. Overview on advances in radiometric receiver design and technology: application to the MIMR

    NASA Astrophysics Data System (ADS)

    Bordi, Roberto; L'Abbate, Michele; Spera, Paolo

    1994-12-01

    MIMR (Multifrequency Imaging Microwave Radiometer) is an instrument under development for the European Space Agency (ESA) by the European Industry, with Alenia Spazio as Prime Contractor. It is a conical scanning passive microwave radiometer, which shall measure the Earth surface brightness temperature by processing the received electro- magnetic Earth surface radiation in linear polarization. Its output products will be of prime importance for monitoring of the environment, and will provide useful data for climatology and meteorology with day and night operation capabilities and near global daily coverage. The experience gained through various programs since 1972 with NIMBUS satellite's series utilizing ESMR, NEMS, SCAMS, SMMR instruments and DMSP-Block 5D-2 satellite with on-board SSM/I instrument led to the MIMR concept with better performance than the instruments already flown. MIMR has successfully passed a design phase, which has established an instrument baseline suited for accommodation on either the NASA EOS or ESA METOP spacecrafts, and a breadboarding activity devoted to key items. A Demonstrator model of the Instrument is currently under development, which shall prove by test its challenging performance: it will be representative of the flight design, performing measurements at 6.8, 36.5 and 89.0 GHz. Within this paper emphasis will be put on the receivers key design topics, as driven by performance and technology trade-offs, with an overview of the achieved performance in the frame of development activity.

  6. X-SAR: The X-band synthetic aperture radar on board the Space Shuttle

    NASA Astrophysics Data System (ADS)

    Werner, Marian U.

    1993-05-01

    The X-band synthetic aperture radar (X-SAR) is the German/Italian contribution to the NASA/JPL Shuttle Radar Lab missions as part of the preparation for the Earth Observation System (EOS) program. The Shuttle Radar Lab is a combination of several radars: an L-band (1.2 GHz) and a C-band (5.3 GHz) multipolarization SAR known as SIR-C (Shuttle Imaging Radar); and an X-band (9.6 GHz) vertically polarized SAR which will be operated synchronously over the same target areas to deliver calibrated multifrequency and multipolarization SAR data at multiple incidence angles from space. A joint German/Italian project office at DARA (German Space Agency) is responsible for the management of the X-SAR project. The space hardware has been developed and manufactured under industrial contract by Dornier and Alenia Spazio. Besides supporting all the technical and scientific tasks, DLR, in cooperation with ASI (Agencia Spaziale Italiano) is responsible for mission operation, calibration, and high precision SAR processing. In addition, DLR developed an airborne X-band SAR to support the experimenters with campaigns to prepare for the missions. The main advantage of adding a shorter wavelength (3 cm) radar to the SIR-C radars is the X-band radar's weaker penetration into vegetation and soil and its high sensitivity to surface roughness and associated phenomena. The performance of each of the three radars is comparable with respect to radiometric and geometric resolution.

  7. An assessment model for quality management

    NASA Astrophysics Data System (ADS)

    Völcker, Chr.; Cass, A.; Dorling, A.; Zilioli, P.; Secchi, P.

    2002-07-01

    SYNSPACE together with InterSPICE and Alenia Spazio is developing an assessment method to determine the capability of an organisation in the area of quality management. The method, sponsored by the European Space Agency (ESA), is called S9kS (SPiCE- 9000 for SPACE). S9kS is based on ISO 9001:2000 with additions from the quality standards issued by the European Committee for Space Standardization (ECSS) and ISO 15504 - Process Assessments. The result is a reference model that supports the expansion of the generic process assessment framework provided by ISO 15504 to nonsoftware areas. In order to be compliant with ISO 15504, requirements from ISO 9001 and ECSS-Q-20 and Q-20-09 have been turned into process definitions in terms of Purpose and Outcomes, supported by a list of detailed indicators such as Practices, Work Products and Work Product Characteristics. In coordination with this project, the capability dimension of ISO 15504 has been revised to be consistent with ISO 9001. As contributions from ISO 9001 and the space quality assurance standards are separable, the stripped down version S9k offers organisations in all industries an assessment model based solely on ISO 9001, and is therefore interesting to all organisations, which intend to improve their quality management system based on ISO 9001.

  8. Development Activities on an Advanced Propellant Flow Control Unit

    NASA Astrophysics Data System (ADS)

    Noci, G.; Siciliano, P.; Fallerini, L.; Kutufa, N.; Rivetti, A.; Galassi, C.; Bruschi, P.; Piotto, M.

    2004-10-01

    A new generation of propellant control equipment for electric propulsion systems is needed in order to improve performance and operating ranges, symplify h/w configuration, reduce mass and dimensions, eliminate mass flow ripple, reduce time response. In this frame, the development of key components, their assembly and experimental investigation/ validation is on-going at Alenia Spazio-Laben/Business Unit Proel Tecnologie ( Proel in the following ) in the frame of an ESA GSTP program. The new components shall support different EP technologies, future EP multi-tasking capability and wide operating ranges. This paper reports about the development effort, its achievements and perspectives. 1. ABBREVIATIONS AND ACRONYMS BOL Beginning of Life CMBR Ceramic multilayer bender ring CTA Constant Temperature Anemometry. DUT Device under test EOL End of Life EP Electric Propulsion GEO Geosyncrhonous Earth Orbit GFCU Gas Flow Control Unit GIT Gridded ion thruster HET Hall Effect Thrusters LEO Low Earth Orbit LPC Low pressure capillary MEOP Maximum Expected Operating Pressure MFS Mass Flow rate Sensor NSSK North-South Station Keeping Pred Reduced pressure Ptank Tank pressure RMT Radiofrequency Magnetic Thruster RMTA Radiofrequency Magnetic Thruster Assembly ROOV Regulation and On-Off Valve SoW Statement of Work SPT Stationary Plasma Thruster.

  9. Italian aerospace company Alenia prepare TSS-1R in O&C

    NASA Technical Reports Server (NTRS)

    1995-01-01

    Employees of the Italian aerospace company Alenia Spazio S.p.A. prepare the Tethered Satellite System-1R (TSS-1R) that is one of two primary payloads scheduled to fly aboard the Orbiter Columbia during the STS-75 mission in early 1996 for a series of tests in the Operations and Checkout (O&C) Building. The TSS program is a joint venture between NASA and the Agenzia Spaziale Italiana, or Italian Space Agency. The 'R' designation indicates a reflight. The TSS-1 flew aboard Atlantis during the STS-46 mission in July 1992 and achieved only a partial success when its tether reel mechanism became jammed after only approximately 840 feet of the 12-mile-long tether had been unwound as the satellite rose from its cradle in the orbiter's payload bay. Once deployed to the 12- mile height on the STS-75 mission, the satellite will be used to validate theories that such a system could possibly be used in the future to generate electrical power to power orbital systems, raise and lower spacecraft, study atmospheric conditions at several different heights and for many other applications.

  10. X-SAR: The X-band synthetic aperture radar on board the Space Shuttle

    NASA Technical Reports Server (NTRS)

    Werner, Marian U.

    1993-01-01

    The X-band synthetic aperture radar (X-SAR) is the German/Italian contribution to the NASA/JPL Shuttle Radar Lab missions as part of the preparation for the Earth Observation System (EOS) program. The Shuttle Radar Lab is a combination of several radars: an L-band (1.2 GHz) and a C-band (5.3 GHz) multipolarization SAR known as SIR-C (Shuttle Imaging Radar); and an X-band (9.6 GHz) vertically polarized SAR which will be operated synchronously over the same target areas to deliver calibrated multifrequency and multipolarization SAR data at multiple incidence angles from space. A joint German/Italian project office at DARA (German Space Agency) is responsible for the management of the X-SAR project. The space hardware has been developed and manufactured under industrial contract by Dornier and Alenia Spazio. Besides supporting all the technical and scientific tasks, DLR, in cooperation with ASI (Agencia Spaziale Italiano) is responsible for mission operation, calibration, and high precision SAR processing. In addition, DLR developed an airborne X-band SAR to support the experimenters with campaigns to prepare for the missions. The main advantage of adding a shorter wavelength (3 cm) radar to the SIR-C radars is the X-band radar's weaker penetration into vegetation and soil and its high sensitivity to surface roughness and associated phenomena. The performance of each of the three radars is comparable with respect to radiometric and geometric resolution.

  11. [Description of the follow-up protocol for idiopathic intracranial hypertension in the neuro-ophthalmological unit of a tertiary hospital].

    PubMed

    González-Hernández, Ayoze; Tandón-Cárdenes, Luis; Cabrera-Naranjo, Fernando; Guzmán-Fernández, María; Fabre-Pi, Óscar; López-Veloso, Carolina

    2013-05-16

    Objetivo. Revisar los resultados de la implantacion de un protocolo de seguimiento de pacientes con hipertension intracraneal idiopatica (HICI) en una unidad de neurooftalmologia (UNO). Pacientes y metodos. Se realizo una revision bibliografica para determinar las exploraciones necesarias que debian incluirse en el protocolo de seguimiento, asi como la frecuencia optima de las visitas y la duracion adecuada del seguimiento. Posteriormente, se revisaron de forma prospectiva los pacientes incluidos desde la creacion de la UNO y se compararon con los pacientes incluidos en el registro de HICI previo a la creacion de la UNO. Resultados. Desde la implantacion del protocolo, en el 100% de los pacientes se ha valorado la agudeza visual y la campimetria visual a los tres meses, a los seis meses y al ano del diagnostico. Ademas, en un 91%, 72,8% y 100% de los pacientes con HICI se realizo una campimetria visual a los tres meses, a los seis meses y al ano del diagnostico, respectivamente. Antes de la implantacion de nuestro protocolo de seguimiento, se habian realizado 190, lo que corresponde a unas tres por paciente. El numero de punciones lumbares realizadas desde la creacion de la UNO es de 11. Conclusiones. La creacion de una UNO multidisciplinar permite optimizar los recursos y mejorar la asistencia a los pacientes con HICI. Esto deberia redundar en una mejoria del pronostico funcional de estos pacientes.

  12. Fotometría de grupos compactos de galaxias: Shakhbazian 37, 45, 166, 331 y 362

    NASA Astrophysics Data System (ADS)

    Campos, J. M.; Calderón, J. H.; Gimeno, N. G.; Díaz, R. J.

    Continuando con la fotometría CCD de Grupos de Galaxias Compactos de Shakhbazyan (SCGG) en este trabajo se presentan nuevos resultados preliminares sobre los grupos Shakbazyan 37, 45, 166, 331 y 362. EL objeto del proyecto es contribuir al estudio de las propiedades físicas de tales grupos y contribuir a las bases de datos para mejora de las estadísticas. Los datos fueron adquiridos con el Telescopio JKT del Observatorio Norte Europeo. El análisis de las imágenes en las bandas I y B como del índice de color B-I permitió reidentificar las galaxias catalogadas, resultando las mismas muy enrojecidas y verificando que predominan las galaxias tempranas, resultados consistentes con los obtenidos para otros grupos y por otros autores.

  13. [In Process Citation].

    PubMed

    Álvarez, Cristian; Ramírez-Campillo, Rodrigo; Vallejos-Rojas, Andrea; Jaramillo-Gallardo, Javiera; Salas Bravo, Carlos; Cano-Montoya, Johnattan; Celis-Morales, Carlos

    2016-03-25

     Introducción: obesidad e inactividad física son importantes factores de riesgo para el desarrollo de hipertensión en adultos. No obstante, hay poca evidencia sobre el efecto de estos factores de riesgo en el desarrollo de hipertensión en población infantil. Objetivo: investigar la asociación del estado nutricional, niveles de actividad física y etnicidad con niveles de hipertensión en escolares entre 6 y 13 años de edad. Métodos: un total de 418 escolares de ascendencia étnica europea (n = 311) y mapuche (n = 107) fueron participantes de este estudio transversal. Se midió el peso, talla, índice de masa corporal (IMC) y presión arterial, utilizando protocolos estandarizados. Resultados: no se encontraron diferencias significativas en IMC, estado nutricional y presión arterial entre niños con ascendencia europea y mapuche. No obstante, la prevalencia de prehipertensión (21,3% vs. 11,1%) e hipertensión (28,9% vs. 18,6%) fue significativamente mayor en escolares mapuches en comparación con europeos, respectivamente. Escolares con ascendencia mapuche tienen un mayor riesgo de desarrollar prehipertensión o hipertensión que escolares con ascendencia europea (OR: 1,92 [1,19 a 3,06], p < 0,01). La prevalencia de hipertensión aumenta significativamente en ambos grupos étnicos con el incremento de IMC y bajos niveles de actividad física. Conclusiones: el riesgo de desarrollar prehipertensión o hipertensión es mayor en población infantil ascendiente de mapuches que ascendiente de europeos y este riesgo se ve acentuado con el incremento de obesidad y bajos niveles de actividad física.

  14. [In Process Citation].

    PubMed

    Álvarez, Cristian; Ramírez-Campillo, Rodrigo; Vallejos-Rojas, Andrea; Jaramillo-Gallardo, Javiera; Salas Bravo, Carlos; Cano-Montoya, Johnattan; Celis-Morales, Carlos

    2016-01-01

     Introducción: obesidad e inactividad física son importantes factores de riesgo para el desarrollo de hipertensión en adultos. No obstante, hay poca evidencia sobre el efecto de estos factores de riesgo en el desarrollo de hipertensión en población infantil. Objetivo: investigar la asociación del estado nutricional, niveles de actividad física y etnicidad con niveles de hipertensión en escolares entre 6 y 13 años de edad. Métodos: un total de 418 escolares de ascendencia étnica europea (n = 311) y mapuche (n = 107) fueron participantes de este estudio transversal. Se midió el peso, talla, índice de masa corporal (IMC) y presión arterial, utilizando protocolos estandarizados. Resultados: no se encontraron diferencias significativas en IMC, estado nutricional y presión arterial entre niños con ascendencia europea y mapuche. No obstante, la prevalencia de prehipertensión (21,3% vs. 11,1%) e hipertensión (28,9% vs. 18,6%) fue significativamente mayor en escolares mapuches en comparación con europeos, respectivamente. Escolares con ascendencia mapuche tienen un mayor riesgo de desarrollar prehipertensión o hipertensión que escolares con ascendencia europea (OR: 1,92 [1,19 a 3,06], p < 0,01). La prevalencia de hipertensión aumenta significativamente en ambos grupos étnicos con el incremento de IMC y bajos niveles de actividad física. Conclusiones: el riesgo de desarrollar prehipertensión o hipertensión es mayor en población infantil ascendiente de mapuches que ascendiente de europeos y este riesgo se ve acentuado con el incremento de obesidad y bajos niveles de actividad física. PMID:27238776

  15. Initial Results of On-Line Earth System Science Course Offerings at the University of Nebraska-Omaha Through the Earth System Science Education Alliance

    NASA Astrophysics Data System (ADS)

    Shuster, R. D.; Grandgenett, N. F.; Schnase, W. L.; Hamersky, S.; Moshman, R.

    2008-12-01

    The University of Nebraska at Omaha has been offering on-line Earth System Science coursework to teachers in Nebraska since 2002. UNO was one of the initial members in the Earth Systems Science Education Alliance (ESSEA) and has offered three different ESSEA courses, with nearly 200 students having taken ESSEA courses at UNO for graduate credit. Our experiences in delivering this coursework have involved both teachers who have received a stipend to take the course and those who have paid their own tuition and fees and received graduate credit for the course. We will report on the online behavior of teachers from both populations and also discuss pros and cons of each approach. UNO has also experimented with different approaches in the support and management of the course, including using undergraduate majors as content experts. This improves access of teachers to content-related feedback and is a positive experience for the undergraduate major. Feedback surveys from earlier ESSEA offerings indicate a strongly positive perception of the courses by the teachers enrolled in the coursework. Project impact has been documented in teacher projects, quotes, and lessons associated with the coursework activities. We will also describe online course modules being developed within the UNO online course efforts, including one focusing on the global amphibian crisis.

  16. Trials and Triumphs of Teaching Introduction to Native American Studies

    ERIC Educational Resources Information Center

    Johansen, Bruce Elliott

    2003-01-01

    Introduction to Native American Studies has been, paradoxically, the author's most satisfying and most challenging teaching assignment in more than two decades as a university-level faculty member. As a former coordinator of the Native American Studies Program at the University of Nebraska at Omaha (UNO), he has heard many other faculty air their…

  17. Red Cooperativa de Tejido Humano del NCI

    Cancer.gov

    Bioespecímenes de calidad son un recurso de investigación oncológica. Uno de los programas de bioespecímenes que han operado por más tiempo es la Red Cooperativa de Tejido Humano, ara descubrimientos básicos e investigación inicial de transferencia.

  18. Los desafíos de tratar con las atmósferas: Entrada, Descenso y Aterrizaje

    NASA Video Gallery

    Ya sea aterrizando en Marte o de regreso a la Tierra, uno de los mayores desafíos de cualquier misión es la entrada, descenso y aterrizaje. Solo piense -- una nave espacial que pasa volando a toda ...

  19. Racial disparities in reaching the renal transplant waitlist: is geography as important as race?

    PubMed Central

    Saunders, Milda R.; Lee, Haena; Alexander, G. Caleb; Tak, Hyo Jung; Thistlethwaite, J. Richard; Ross, Lainie Friedman

    2016-01-01

    Background In the United States, African Americans and whites differ in access to the deceased donor renal transplant waitlist. The extent to which racial disparities in waitlisting differ between United Network for Organ Sharing (UNOS) regions is understudied. Methods The US Renal Data System (USRDS) was linked with US census data to examine time from dialysis initiation to waitlisting for whites (n = 188 410) and African Americans (n = 144 335) using Cox proportional hazards across 11 UNOS regions, adjusting for potentially confounding individual, neighborhood, and state characteristics. Results Likelihood of waitlisting varies significantly by UNOS region, overall and by race. Additionally, African Americans face significantly lower likelihood of waitlisting compared to whites in all but two regions (1 and 6). Overall, 39% of African Americans with ESRD reside in Regions 3 and 4 – regions with a large racial disparity and where African Americans comprise a large proportion of the ESRD population. In these regions, the African American–white disparity is an important contributor to their overall regional disparity. Conclusions Race remains an important factor in time to transplant waitlist in the United States. Race contributes to overall regional disparities; however, the importance of race varies by UNOS region. PMID:25818547

  20. Leyendo con tu hijo: Consejos practicos para los padres... (Reading with Your Child: Practical Advice for Parents...).

    ERIC Educational Resources Information Center

    Colorado State Dept. of Education, Denver.

    This brochure (in Spanish) offers some practical tips for Spanish-speaking parents who wish to read to their young children. The brochure first provides general tips, such as "Lea a su hijo en voz alto por lo menos unos 15 minutos todos los dias" (Read to your child aloud for at least 15 minutes daily), and "Estabeleza una rotina y un lugar para…

  1. An Investigation of Anglicized Spanish as a Communication Strategy in the Beginning Spanish Classroom

    ERIC Educational Resources Information Center

    Kobeck, Ashley Brianne

    2013-01-01

    Considering the recent increase in Spanish use in the United States, particularly as reflected in the media, beginning Spanish students are entering their classrooms with knowledge of phrases such as "hasta la vista" and "numero uno," regardless of their amount of previous formal Spanish study. The present research focuses on…

  2. Enhancing the STEM Ecosystem through Teacher-Researcher Partnerships

    ERIC Educational Resources Information Center

    Tapprich, William; Grandgenett, Neal; Leas, Heather; Rodie, Steve; Shuster, Robert; Schaben, Chris; Cutucache, Christine

    2016-01-01

    STEM faculty at the University of Nebraska at Omaha (UNO) have partnered with teachers and administrators in the Omaha Public Schools (OPS) to implement a Teacher-Researcher Partnership Program. This program establishes resources and infrastructure that engage K-12 science teachers in scientific research experiences. In the first implementation of…

  3. Nuevas estrategias de gestión, tratamiento y valorización de los efluentes organicos pecuarios: Experiencias en USDA. (Management strategies for organic livestock effluents,innovative treatment and valorization)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    En la actualidad el impacto potencial de los residuos ganaderos en el medio-ambiente representa uno de los desafíos más grandes de la agricultura. Las tecnologías de tratamiento pueden tener un importante papel en el manejo de los residuos ganaderos dando más flexibilidad en los programas de la apli...

  4. A Simulation of Coevolution Using Playing Cards

    ERIC Educational Resources Information Center

    Tatina, Robert

    2007-01-01

    In this article, the author describes a simulation of a coevolutionary "arms race" and introduce a way of teaching it that lets students use the theory of natural selection to explain the outcomes of the simulation. The simulation uses the numerical cards from an UNO[R] playing card deck to represent the speeds of individuals in populations of…

  5. An Inquiry-Based Exercise for Demonstrating Prey Preference in Snakes

    ERIC Educational Resources Information Center

    Place, Aaron J.; Abramson, Charles I.

    2006-01-01

    The recent promotion of inquiry-based learning techniques (Uno, 1990) is well suited to the use of animals in the classroom. Working with living organisms directly engages students and stimulates them to actively participate in the learning process. Students develop a greater appreciation for living things, the natural world, and their impact on…

  6. The "I" of the Storm: Teaching English and Helping Students and Instructors Cope in Post-Katrina New Orleans

    ERIC Educational Resources Information Center

    Dixon, Nancy

    2007-01-01

    This essay is entitled "The 'I' of the Storm" in order to stress the very personal nature of teaching in the immediate, post-Katrina semester of Fall 2005. The University of New Orleans (UNO) was the only university in the city to open that semester, and many traumatized instructors, the author included, were serving the thousands of…

  7. Collective Bargaining Agreement between University of Nebraska at Omaha Chapter American Association of University Professors and the Board of Regents of University of Nebraska for the Period July 1, 1989 through June 30, 1991.

    ERIC Educational Resources Information Center

    American Association of Univ. Professors, Washington, DC.

    This is the agreement between the University of Nebraska at Omaha Chapter of the American Association of University Professors (AAUP) and the Board of Regents of the University of Nebraska at Omaha (UNO) for the academic years 1989-1991. Five articles detail the following topics: (1)definition of terms; (2) recognition and description of the…

  8. Collective Bargaining Agreement between University of Nebraska at Omaha Chapter, American Association of University Professors and the Board of Regents of the University of Nebraska for the Period July 1, 1986 through June 30, 1987.

    ERIC Educational Resources Information Center

    American Association of Univ. Professors, Washington, DC.

    The collective bargaining agreement between the board of regents of the University of Nebraska at Omaha (UNO) and the university chapter of the American Association of University Professors (AAUP) for the period July 1, 1986 through June 30, 1987 is presented. The agreement's five articles include the following: (1) definition of terms; (2)…

  9. Embedding Science Facts in Leisure Skill Instruction Conducted by Peer Tutors

    ERIC Educational Resources Information Center

    Fetko, Erin E.; Collins, Belva C.; Hager, Karen D.; Spriggs, Amy D.

    2013-01-01

    This investigation evaluated the effectiveness of using peer tutors to teach a chained leisure skill (i.e., UNO card game) to three middle school students with disabilities using a simultaneous prompting procedure within a multiple probe design. The investigation also assessed whether the students with disabilities would acquire four unrelated…

  10. Changing the Scholarly Sources Landscape with Geomorphology Undergraduate Students

    ERIC Educational Resources Information Center

    Blackburn, Heidi; Dere, Ashlee

    2016-01-01

    Science is a core discipline in academia yet the focus of most undergraduate technical writing is generally on the data and results, not the literature review. The Science, Technology, Engineering, and Math (STEM) librarian and a new geology professor at the University of Nebraska at Omaha (UNO) collaborated to develop an information literacy…

  11. Art and Technology Integration Project: Year 1 Status Report.

    ERIC Educational Resources Information Center

    Ostler, Elliott; And Others

    This report provides a progress report on the Art and Technology Integration Project (ATI), a partnership of the Westside and Grand Island Public Schools, the Smithsonian Institution's National Museum of American Art (NMAA), and the University of Nebraska at Omaha (UNO). The ATI project focuses on long-range assessment of the integration of the…

  12. Intestine Transplant

    MedlinePlus

    ... intestine segment, most intestine transplants involve a whole organ from a deceased donor. In addition, most intestine transplants are performed in ... blood before surgery. I am looking for ... allocation About UNOS Being a living donor Calculator - CPRA Calculator - KDPI Calculator - LAS Calculator - MELD ...

  13. Optimised Environmental Test Approaches in the GOCE Project

    NASA Astrophysics Data System (ADS)

    Ancona, V.; Giordano, P.; Casagrande, C.

    2004-08-01

    The Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) is dedicated to measuring the Earth's gravity field and modelling the geoid with extremely high accuracy and spatial resolution. It is the first Earth Explorer Core mission to be developed as part of ESA's Living Planet Programme and is scheduled for launch in 2006. The program is managed by a consortium of European companies: Alenia Spazio, the prime contractor, Astrium GmbH, the platform responsible, Alcatel Space Industries and Laben, suppliers of the main payloads, respectively the Electrostatic Gravity Gradiometer (EGG) and the Satellite to Satellite Tracking Instrument (SSTI), actually a precise GPS receiver. The GOCE Assembly Integration and Verification (AIV) approach is established and implemented in order to demonstrate to the customer that the satellite design meets the applicable requirements and to qualify and accept from lower level up to system level. The driving keywords of "low cost" and "short schedule" program, call for minimizing the development effort by utilizing off-the-shelf equipment combined with a model philosophy lowering the number of models to be used. The paper will deal on the peculiarities of the optimized environmental test approach in the GOCE project. In particular it introduces the logic of the AIV approach and describe the foreseen tests at system level within the SM environmental test campaign, outlining the Quasi Static test performed in the frame of the SM sine vibration tests, and the PFM environmental test campaign pinpointing the deletion of the Sine Vibration test on PFM model. Furthermore the paper highlights how the Model and Test Effectiveness Database (MATD) can be utilized for the prediction of the new space projects like GOCE Satellite.

  14. MIOSAT Mission Scenario and Design

    NASA Astrophysics Data System (ADS)

    Agostara, C.; Dionisio, C.; Sgroi, G.; di Salvo, A.

    2008-08-01

    MIOSAT ("Mssione Ottica su microSATellite") is a low-cost technological / scientific microsatellite mission for Earth Observation, funded by Italian Space Agency (ASI) and managed by a Group Agreement between Rheinmetall Italia - B.U. Spazio - Contraves as leader and Carlo Gavazzi Space as satellite manufacturer. Several others Italians Companies, SME and Universities are involved in the development team with crucial roles. MIOSAT is a microsatellite weighting around 120 kg and placed in a 525 km altitude sun-synchronuos circular LEO orbit. The microsatellite embarks three innovative optical payloads: Sagnac multi spectral radiometer (IFAC-CNR), Mach Zehender spectrometer (IMM-CNR), high resolution pancromatic camera (Selex Galileo). In addition three technological experiments will be tested in-flight. The first one is an heat pipe based on Marangoni effect with high efficiency. The second is a high accuracy Sun Sensor using COTS components and the last is a GNSS SW receiver that utilizes a Leon2 processor. Finally a new generation of 28% efficiency solar cells will be adopted for the power generation. The platform is highly agile and can tilt along and cross flight direction. The pointing accuracy is in the order of 0,1° for each axe. The pointing determination during images acquisition is <0,02° for the axis normal to the boresight and 0,04° for the boresight. This paper deals with MIOSAT mission scenario and definition, highlighting trade-offs for mission implementation. MIOSAT mission design has been constrained from challenging requirements in terms of satellite mass, mission lifetime, instrument performance, that have implied the utilization of satellite agility capability to improve instruments performance in terms of S/N and resolution. The instruments provide complementary measurements that can be combined in effective ways to exploit new applications in the fields of atmosphere composition analysis, Earth emissions, antropic phenomena, etc. The Mission

  15. Space Radar Image of Kilauea, Hawaii

    NASA Technical Reports Server (NTRS)

    1994-01-01

    Data acquired on April 13, 1994 and on October 4, 1994 from the X-band Synthetic Aperture Radar on board the space shuttle Endeavour were used to generate interferometric fringes, which were overlaid on the X-SAR image of Kilauea. The volcano is centered in this image at 19.58 degrees north latitude and 155.55 degrees west longitude. The image covers about 9 kilometers by 13 kilometers (5.6 miles by 8 miles). The X-band fringes correspond clearly to the expected topographic image. The yellow line indicates the area below which was used for the three-dimensional image using altitude lines. The yellow rectangular frame fences the area for the final topographic image. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR. The Instituto Ricerca Elettromagnetismo Componenti Elettronici (IRECE) at the University of Naples was a partner in interferometry analysis.

  16. The SAX Italian scientific satellite. The on-board implemented automation as a support to the ground control capability

    NASA Technical Reports Server (NTRS)

    Martelli, Andrea

    1994-01-01

    This paper presents the capabilities implemented in the SAX system for an efficient operations management during its in-flight mission. SAX is an Italian scientific satellite for x-ray astronomy whose major mission objectives impose quite tight constraints on the implementation of both the space and ground segment. The most relevant mission characteristics require an operative lifetime of two years, performing scientific observations both in contact and in noncontact periods, with a low equatorial orbit supported by one ground station, so that only a few minutes of communications are available each orbit. This operational scenario determines the need to have a satellite capable of performing the scheduled mission automatically and reacting autonomously to contingency situations. The implementation approach of the on-board operations management, through which the necessary automation and autonomy are achieved, follows a hierarchical structure. This has been achieved adopting a distributed avionic architecture. Nine different on-board computers, in fact, constitute the on-board data management system. Each of them performs the local control and monitors its own functions while the system level control is performed at a higher level by the data handling applications software. The SAX on-board architecture provides the ground operators with different options of intervention by three classes of telecommands. The management of the scientific operations will be scheduled by the operation control center via dedicated operating plans. The SAX satellite flight mode is presently being integrated at Alenia Spazio premises in Turin for a launch scheduled for the end of 1995. Once in orbit, the SAX satellite will be subject to intensive check-out activities in order to verify the required mission performances. An overview of the envisaged procedure and of the necessary on-ground activities is therefore depicted as well.

  17. National Workshop on Astrobiology: the life science involvement of AAS-I Laben.

    PubMed

    Adami, Giorgio

    2006-12-01

    The search for traces of past and present life is a complex and multidisciplinary research activity involving several scientific heritages and a specific industrial ability for planetary exploration. Laben was established in 1958 to design and manufacture electronic instruments for research in nuclear physics. In the mid 2004 the company was merged with Alenia Spazio. It is now part of Alcatel Alenia Space, a French Italian joint venture. Alcatel Alenia Space Italia SpA is a Finmeccanica Company. Currently the plant of Vimodrone provides a wide heritage in life science oriented to space application. The experience in Space Life Science is consolidated in the following research areas: (1) Physiology: Mouse models related to studies on human physiology Human neuroscience research and dosimetry (2) Animal Adaptation and Behaviour: mice behaviour related to stabling stress (3) Developmental Biology: aquatic microorganisms cultivation (4) Cell culture & Biotechnology: Protein crystal growth General purpose Multiwell Next Biotechnology studies and development: Bio reactor, mainly oriented to tissue engineering Microsensor for tissue control (organ replacement) Multiwell for adherent cell culture or for automated biosensor based on cell culture Experiment Container for organic systems Experiment Container for small animals Instrumentation based on fluorescent Biosensors Sensors for Life science experiments for Biopan capsule and Space Vehicle Ray Shielding Materials Random Positioning Machine specialisation (Support ground equipment) The biological features of this heritage is at disposal for the exobiology multi science. The involvement of industries, from the beginning of the exobiology projects, allows a cost effective technologies closed loop development between Research Centres, Principal Investigators and industry.

  18. Utilisation of Wearable Computing for Space Programmes Test Activities Optimasation

    NASA Astrophysics Data System (ADS)

    Basso, V.; Lazzari, D.; Alemanni, M.

    2004-08-01

    New technologies are assuming a relevant importance in the Space business domain also in the Assembly Integration and Test (AIT) activities allowing process optimization and capability that were unthinkable only few years ago. This paper has the aim to describe Alenia Spazio (ALS) gained experience on the remote interaction techniques as a results of collaborations established both on European Communities (EC) initiatives, with Alenia Aeronautica (ALA) and Politecnico of Torino (POLITO). The H/W and S/W components performances increase and costs reduction due to the home computing massive utilization (especially demanded by the games business) together with the network technology possibility (offered by the web as well as the hi-speed links and the wireless communications) allow today to re-think the traditional AIT process activities in the light of the multimedia data exchange: graphical, voice video and by sure more in the future. Aerospace business confirm its innovation vocation which in the year '80 represents the cradle of the CAD systems and today is oriented to the 3D data visualization/ interaction technologies and remote visualisation/ interaction in collaborative way on a much more user friendly bases (i.e. not for specialists). Fig. 1 collects AIT extended scenario studied and adopted by ALS in these years. ALS experimented two possibilities of remote visualization/interaction: Portable [e.g. Fig.2 Personal Digital Assistant (PDA), Wearable] and walls (e.g.VR-Lab) screens as both 2D/3D visualisation and interaction devices which could support many types of traditional (mainly based on EGSE and PDM/CAD utilisation/reports) company internal AIT applications: 1. design review support 2. facility management 3. storage management 4. personnel training 5. integration sequences definition 6. assembly and test operations follow up 7. documentation review and external access to AIT activities for remote operations (e.g. tele-testing) EGSE Portable Clean room

  19. Thirty-three years of recruiting and graduating minority students at the University of New Orleans.

    NASA Astrophysics Data System (ADS)

    Serpa, L. F.; Pavlis, T. L.

    2006-12-01

    The University of New Orleans (UNO) began a formal program to recruit minority geoscience students in 1974 when Dr. Louis Fernandez initiated the program through a grant from the National Science Foundation. A major tool in the original program was to take minority high school students on a field trip. That early program was a major success at a time when even one African American student graduating with a B.S. degree in Geology or Geophysics from any university in the U.S. was considered to be significant. The field trip has continued every year since the program began and it continues to be part of a very successful recruiting effort. Over the last approximately 15 years, the minority geoscience undergraduate student population at UNO rose to approximately 40% with African American students making up the largest single ethnic group. The retention and graduation rates of these minority undergraduates at UNO are high and minority students are often graduating at or near the top of their class. Despite the disproportionate displacement of African Americans from the New Orleans area after Hurricane Katrina, those minority geoscience students who can return to UNO are doing so in significant numbers. Thus, the minority program appears to have achieved a high level of sustainability. Recently we took a closer look at the program to determine the possible explanations for its success. Although availability of scholarships, tutoring and mentors clearly contributes to our success, the key to the success of the program remains the field trip. The trip not only serves as an academic opportunity for students to see geological features first hand and develop a curiosity for earth sciences, but it also affords an opportunity to build trust and a relationship between the faculty on the trip and the meet other potential students. That trust may be the most important key to our successful recruitment of minority students at UNO. In addition, the approximately 2 week field trip is

  20. Using LEDs to reduce energy consumption

    NASA Astrophysics Data System (ADS)

    Eweni, Chukwuebuka E.

    The most popularly used light bulb in homes is the incandescent. It is also the least energy efficient. The filament in the bulb is so thin that it causes resistance in the electricity, which in turn causes the electricity's energy to form heat. This causes the incandescent to waste a lot of energy forming heat rather than forming the light. It uses 15 lumens per watt of input power. A recorded MATLAB demonstration showcased LED versatility and how it can be used by an Arduino UNO board. The objective of this thesis is to showcase how LEDs can reduce energy consumption through the use of an Arduino UNO board and MATLAB and to discuss the applications of LED. LED will be the future of lighting homes and will eventually completely incandescent bulbs when companies begin to make the necessary improvements to the LED.

  1. Towards GPS orbit accuracy of tens of centimeters

    NASA Technical Reports Server (NTRS)

    Lichten, Stephen M.

    1990-01-01

    In this paper, CASA Uno orbit results are presented utilizing data from four continents. Refinements in orbit modeling, combined with the availability of a worldwide tracking network and the dense distribution of tracking sites in North and South America, have improved orbit determination precision to about 60 cm (per component) for four of the seven GPS satellites tracked in CASA Uno. The orbit results are consistent with California baseline repeatabilities, which are at the few mm level in horizontal and length, and 1-2 cm in the vertical. Baseline comparisons with VLBI provide a measure of orbit accuracy, showing sub-cm agreement in length and 1.5 cm agreement in the horizontal.

  2. The Past, Present and Future of Endovascular Aneurysm Treatment.

    PubMed

    Henkes, H; Weber, W

    2015-10-01

    The technology available for the endovascular treatment of intracranial aneurysms is rapidly evolving. Both current and future devices are described. This includes, among others, UNO for parent vessel occlusion, the Medina device for saccular filling, the Comaneci device for remodeling, pCONus for assisted coil occlusion, and WEB and pCANvas for intrasaccular flow disruption. Perspectives of further development such as surface coating for increased radioopacity and decreased thrombogenicity are explained.

  3. [Experience in kidney transplantation without blood transfusion: kidney transplantation transfusion-free in Jehovah's Witnesses. First communication in Mexico].

    PubMed

    Hernández-Navarrete, Liliana Stefany; Hernández-Jiménez, Jesús Diego; Jiménez-López, Luis Alfredo; Budar-Fernández, Luis Filadelfo; Méndez-López, Marco Tulio; Martínez-Mier, Gustavo

    2013-01-01

    Antecedentes: los Testigos de Jehová rechazan la transfusión sanguínea, pero aceptan el trasplante de órganos, albúmina, inmunoglobulina, vacunas y factores de coagulación. Casos clínicos: comunicamos tres casos de pacientes (dos masculinos y uno femenino) a quienes se realizó trasplante renal en Testigos de Jehová sin transfusión sanguínea, con edad promedio de 31.33 años e índice de masa corporal promedio de 20.99 kg/m(2). Los tres pacientes recibieron diálisis peritoneal pre trasplante por un promedio de 52.3 meses. Se realizaron dos trasplantes de donante vivo y uno de fallecido, con isquemia fría de 23 horas. Los donantes fueron dos femeninos y uno masculino, con edad promedio de 34.33 años. Los tres pacientes recibieron eritropoyetina y hierro dextrán pretrasplante y en el transoperatorio se utilizó una máquina de recuperación celular. Las concentraciones de hemoglobina, hematócrito, glóbulos rojos, creatinina sérica y filtración glomerular a 24 meses postrasplante permanecieron estables. La inducción se realizó con basiliximab y la inmunosupresión inicial con inhibidores de calcineurina. Uno de los pacientes tuvo como complicación un hematoma perirrenal que ameritó reintervención a los 20 días postrasplante. A 5, 26 y 36 meses postrasplante los tres pacientes están vivos y con injerto funcional. Conclusión: es posible realizar trasplantes renales sin transfusión sanguínea en Testigos de Jehová, con supervivencia global aceptable y sin episodios de rechazo agudo.

  4. U.S. system for organ procurement and transplantation.

    PubMed

    Schaeffer, M J; Alexander, D C

    1992-07-01

    The establishment and responsibilities of the organ procurement and transplantation network in the United States are discussed, and the process of receiving an organ transplant through the system is described. The National Organ Transplant Act of 1984 provided for a federally funded network for organ procurement and transplantation, which would function as a private, non-profit organization. This organization is the United Network for Organ Sharing (UNOS). UNOS monitors the activities of and provides service to transplant centers and organ procurement organizations (OPOs). The names of all candidates awaiting cadaveric organ transplants are placed on a central waiting list maintained by UNOS; UNOS also is responsible for maintaining a scientific registry to collect relevant data from transplant centers on the recipients of organ transplants. Although there is a national list of more than 25,000 persons waiting at any given time for a cadaveric organ, there are far fewer actual organ donors (less than 5000 in 1991). The hospital's best resource with respect to the donation process is the local OPO, which provides services related to organ donor referral, evaluation, and surgical recovery. The organ donation process consists of eight components: donor identification, referral, evaluation, consent, management, recovery of organs, allocation, and follow-up. An organ recovery coordinator from the local OPO helps the hospital staff in determining donation potential, seeking consent from the next of kin, and managing the donor after consent has been obtained. The OPO--never the donor's family or their insurer--is billed for charges relating to the donation. The OPO then bills the costs associated with the donation to the transplant centers receiving each organ for implantation.(ABSTRACT TRUNCATED AT 250 WORDS)

  5. Gaining and Sustaining TEL in a 1:1 Laptop Initiative: Possibilities and Challenges for Teachers and Students

    ERIC Educational Resources Information Center

    Lindqvist, Marcia J. P. Håkansson

    2015-01-01

    The uptake and use of digital technologies is studied in Unos Umeå, a joint one-to-one (1:1) research project between Umeå University and the municipality of Umeå in Sweden. This article presents the results of the third phase of the classroom work with laptops. Using the ecology of resources model (Luckin, 2010), these possibilities and…

  6. The Conference Proceedings of the 1997 Air Transport Research Group (ATRG) of the WCTR Society. Volume 1

    NASA Technical Reports Server (NTRS)

    Oum, Tae Hoon (Editor); Bowen, Brent D. (Editor)

    1997-01-01

    The UNO Aviation Institute has published the 1997 Proceedings of the Air Transport Research Group of the World Conference on Transportation Research (WCTR) Society. Items published in this three volume, seven monograph series were presented at the triennial ATRG Conference held at the University of British Columbia, June 25-27, 1997. A wide variety of policy issues are discussed including the following: open- skies agreements, liberalization, globalization, airline competition, airport performance, pricing, hubs, and safety, among others.

  7. Shaping Ability of Reciproc, UnicOne, and Protaper Universal in Simulated Root Canals

    PubMed Central

    Matos Maia Filho, Etevaldo; de Castro Rizzi, Cláudia; Bandeca Coelho, Matheus; Freitas Santos, Sara; Mayanne Oliveira Costa, Luzia; Nunes Carvalho, Ceci; Rodolfo de Jesus Tavarez, Rudys; Alves Soares, Janir

    2015-01-01

    The study aimed to compare the shaping effects, preservation of the original curvature, and transportation of the apical foramen of Reciproc (VDW, Munich, Germany), UnicOne (Medin, Nové Město na Moravě, Czech Republic), and Protaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) in simulated root canals. Thirty resin blocks with simulated curved root canals were distributed into three groups (n = 10), and prepared using Reciproc (RCp), UnicOne (UnO) and the Protaper Universal (PTu). Standardized photographs were taken before and after the instrumentation, after which they were superimposed. Measurements were taken of the quantity of resin removed from the inner and outer walls of the curvature at 6 levels, the curvature angles before and after instrumentation, and the transportation of the apical foramen. RCp obtained the highest values for amount of resin removed from the inner wall while UnO demonstrated similar shaping on both the inner and outer walls. PTu produced the greatest transportation of foramen when compared to the reciprocating instruments. There was no significant difference between the groups in terms of the change in angle (P > 0.05). All the instruments were capable of maintaining the original curvature of the root canal; however, the UnO, which used reciprocating movement, produced more conservative shapes with lower foramen transportation. PMID:25950022

  8. The University of Nebraska at Omaha Center for Space Data Use in Teaching and Learning

    NASA Technical Reports Server (NTRS)

    Grandgenett, Neal

    2000-01-01

    Within the context of innovative coursework and other educational activities, we are proposing the establishment of a University of Nebraska at Omaha (UNO) Center for the Use of Space Data in Teaching and Learning. This Center will provide an exciting and motivating process for educators at all levels to become involved in professional development and training which engages real life applications of mathematics, science, and technology. The Center will facilitate innovative courses (including online and distance education formats), systematic degree programs, classroom research initiatives, new instructional methods and tools, engaging curriculum materials, and various symposiums. It will involve the active participation of several Departments and Colleges on the UNO campus and be well integrated into the campus environment. It will have a direct impact on pre-service and in-service educators, the K12 (kindergarten through 12th grade) students that they teach, and other college students of various science, mathematics, and technology related disciplines, in which they share coursework. It is our belief that there are many exciting opportunities represented by space data and imagery, as a context for engaging mathematics, science, and technology education. The UNO Center for Space Data Use in Teaching and Learning being proposed in this document will encompass a comprehensive training and dissemination strategy that targets the improvement of K-12 education, through changes in the undergraduate and graduate preparation of teachers in science, mathematics and technology education.

  9. IDIS Small Bodies and Dust Node

    NASA Astrophysics Data System (ADS)

    de Sanctis, M. C.; Capria, M. T.; Carraro, F.; Fonte, S.; Giacomini, L.; Turrini, D.

    2009-04-01

    The EuroPlaNet information service provides access to lists of researchers, laboratories and data archives relevant to many aspects of planetary and space physics. Information can be accessed through EuroPlaNet website or, for advanced searches, via web-services available at the different thematic nodes. The goal of IDIS is to provide easy-to-use access to resources like people, laboratories, modeling activities and data archives related to planetary sciences. The development of IDIS is an international effort started under the European Commission's 6th Framework Programme and which will expand its capabilities during the 7th Framework Programme, as part of the Capacities Specific Programme/Research Infrastructures. IDIS is complemented by a set of other EuroPlaNet web-services maintained under the responsibility of separate institutions. Each activity maintains its own web-portal with cross-links pointing to the other elements of EuroPlaNet. General access is provided via the EuroPlaNet Homepage. IDIS is not a repository of original data but rather supports the access to various data sources. The final goal of IDIS is to provide Virtual Observatory tools for the access to data from laboratory measurements and ground- and spaced-based observations to modeling results, allowing the combination of as divergent data sources as feasible. IDIS is built around four scientific nodes located in different European countries. Each node deals with a subset of the disciplines related to planetary sciences and, working in cooperation with international experts in these fields, provides a wealth of information to the international planetary science community. The EuroPlaNet IDIS thematic node "Small Bodies and Dust Node" is hosted by the Istituto di Fisica dello Spazio Interplanetario and is established in close cooperation with the Istituto di Astrofisica Spaziale. Both these institutes are part of the Istituto Nazionale di Astrofisica (INAF). The IDIS Small Bodies and Dust

  10. Space Radar Image of Niya ruins, Taklamakan desert

    NASA Technical Reports Server (NTRS)

    1999-01-01

    human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtange-legenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstaltfuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  11. Space Radar Image of Manaus, Brazil

    NASA Technical Reports Server (NTRS)

    1999-01-01

    This false-color L-band image of the Manaus region of Brazil was acquired by the Spaceborne Imaging Radar-C and X-Band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on orbit 46 of the mission. The area shown is approximately 8 kilometers by 40 kilometers (5 by 25 miles). At the top of the image are the Solimoes and Rio Negro rivers just before they combine at Manaus to form the Amazon River. The image is centered at about 3 degrees south latitude, and 61 degrees west longitude. The false colors are created by displaying three L-band polarization channels; red areas correspond to high backscatter at HH polarization, while green areas exhibit high backscatter at HV polarization. Blue areas show low returns at VV polarization; hence the bright blue colors of the smooth river surfaces. Using this coloring scheme, green areas in the image are heavily forested, while blue areas are either cleared forest or open water. The yellow and red areas are flooded forest. Between Rio Solimoes and Rio Negro a road can be seen running from some cleared areas (visible as blue rectangles north of Rio Solimoes) north towards a tributary of Rio Negro. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio

  12. Space Radar Image Isla Isabela in 3-D

    NASA Technical Reports Server (NTRS)

    1999-01-01

    , complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  13. Radar Image of Galapagos Island

    NASA Technical Reports Server (NTRS)

    1994-01-01

    which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  14. space Radar Image of Long Valley, California

    NASA Technical Reports Server (NTRS)

    1994-01-01

    environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  15. Space Radar Image of Central African Gorilla Habitat

    NASA Technical Reports Server (NTRS)

    1999-01-01

    Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v. (DLR), the major partner in science, operations and data processing of X-SAR.

  16. Space Radar Image of Mammoth, California in 3-D

    NASA Technical Reports Server (NTRS)

    1999-01-01

    This is a three-dimensional perspective of Mammoth Mountain, California. This view was constructed by overlaying a Spaceborne Imaging Radar-C (SIR-C) radar image on a U.S. Geological Survey digital elevation map. Vertical exaggeration is 1.87 times. The image is centered at 37.6 degrees north, 119.0 degrees west. It was acquired from the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) onboard space shuttle Endeavour on its 67th orbit on April 13, 1994. In this color representation, red is C-band HV-polarization, green is C-band VV-polarization and blue is the ratio of C-band VV to C-band HV. Blue areas are smooth, and yellow areas are rock out-crops with varying amounts of snow and vegetation. Crowley Lake is in the foreground, and Highway 395 crosses in the middle of the image. Mammoth Mountain is shown in the upper right. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  17. A project for a solar sail propelled spaceship

    NASA Astrophysics Data System (ADS)

    Bevilacqua, Franco; Cesare, Stefano

    1994-02-01

    (today Alenia Spazio) produced the contest-winning solar sail design among the European countries.

  18. Modeling the electromagnetic response of Titan's surface features observed by Cassini Radar

    NASA Astrophysics Data System (ADS)

    Ventura, B.; Casarano, D.; Notarnicola, C.; Di Rosa, D.; Posa, F.

    2006-09-01

    The Cassini spacecraft, launched in 1997, begun the exploration of the Saturnian system in July 2004. 44 flybies of the Saturn largest moon Titan are planned during the four years of the Cassini mission and 16 are Radar passes. A Radar, developed jointly by JPL, ASI and Alenia Spazio, is mounted on Cassini. The instrument operates at 13.8 GHz (Ku band) and has passive (radiometer) and active (scatterometer, altimeter, SAR imaging) capabilities. Until July 2006, six (Ta, T3, T7, T8, T13, T16) radar planned passes have been accomplished. The data are processed by the JPL and stored in the Basic Image Data Records (BIDR) files, thus obtaining SAR images and brightness temperature profiles of a significant fraction of Titan's surface. The Radar Cross Section, RCS, derived from the SAR imagery, reflects the complex Titan's surface morphology. The data show RCS variations in excess of 20 dB between the "brightest" and the "darkest" areas. On the basis of brightness, texture, and morphology eight different surface units were identified by Cassini Radar Science Team (CRST) scientists. The darkest features are good candidate to be lakes of hydrocarbons. Moreover, periodic structures ("sand dunes") have been observed: in this case the RCS variations can be described in terms of tilt angle effect, thus modifying the local incidence angle. In this paper, the RCS behaviour of the observed features is studied in detail by the means of the Integral Equation Method, IEM. The dependence of the backscattering coefficient on the surface physical properties, composition and roughness of different areas is analyzed resulting in some possible scenarios for the observed features. Surfaces are modeled as Gaussian stationary processes and volume scattering is also taken into account, due to the transparency of water ice at radar wavelength. The data of the IEM model are compared with numerical simulations based on the Kirchhoff approximation with auto similar surfaces performed as

  19. Color Image of Death Valley, California from SIR-C

    NASA Technical Reports Server (NTRS)

    1999-01-01

    studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  20. Space Radar Image of Long Valley, California - 3D view

    NASA Technical Reports Server (NTRS)

    1994-01-01

    . X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  1. Space Radar Image of Colima Volcano, Jalisco, Mexico

    NASA Technical Reports Server (NTRS)

    1994-01-01

    and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  2. Space Radar Image of Raco Vegetation Map

    NASA Technical Reports Server (NTRS)

    1999-01-01

    This is a vegetation map of the Raco, Michigan area produced from data acquired by the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) onboard space shuttle Endeavour. The radar image, taken on April 9, 1994, has been used by science team members at the University of Michigan to produce detailed map of land cover. This image is centered at 46.4 degrees north latitude and 84.9 degrees west longitude. The imaged area is approximately 24 by 32 kilometers (15 by 20 miles). The Raco airport, which is a decommissioned military base, is easily identified by its triangular runway structure. An edge of Lake Superior, approximately 44 kilometers (27 miles) west of Sault Sainte Marie, appears in the top right of the image. In this land cover map each 30- by 30-meter (98- by 98-foot) spot is identified as either a water surface, bare ground, short vegetation, deciduous forest, lowland conifers or upland conifers. Different types of ground cover have different effects on Earth's chemical, water and energy cycles. By cataloguing ground cover in an area, scientists expect to better understand the processes of these cycles in a specific area. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio

  3. Space Radar Image of Kilauea, Hawaii - interferometry 1

    NASA Technical Reports Server (NTRS)

    1994-01-01

    This X-band image of the volcano Kilauea was taken on October 4, 1994, by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar. The area shown is about 9 kilometers by 13 kilometers (5.5 miles by 8 miles) and is centered at about 19.58 degrees north latitude and 155.55 degrees west longitude. This image and a similar image taken during the first flight of the radar instrument on April 13, 1994 were combined to produce the topographic information by means of an interferometric process. This is a process by which radar data acquired on different passes of the space shuttle is overlaid to obtain elevation information. Three additional images are provided showing an overlay of radar data with interferometric fringes; a three-dimensional image based on altitude lines; and, finally, a topographic view of the region. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR. The Instituto Ricerca Elettromagnetismo

  4. Space Radar Image of Namib Desert in Southern Namib

    NASA Technical Reports Server (NTRS)

    1999-01-01

    This is a C-band, VV polarization radar image of the Namib desert in southern Namibia, near the coast of South West Africa. The image is centered at about 25 degrees South latitude, 15.5 degrees East longitude. This image was one of the first acquired by the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) when it was taken on orbit 4 from the shuttle Endeavour on April 9, 1994. The area shown is approximately 78 kilometers by 20 kilometers. The dominant features in the image are complex sand dune patterns formed by the prevailing winds in this part of the Namib desert. The Namib desert is an extremely dry area formed largely because of the influence of the cold Benguela ocean current that flows northward along the coast of Namibia. The bright areas at the bottom of the image are exposed outcrops of Precambrian rocks. This extremely barren area is a region rich in diamonds that through the centuries have washed down from the mountains. The town of Luderitz is located just to the south of the area shown. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Aumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia

  5. SPace Radar Image of Fort Irwin, California

    NASA Technical Reports Server (NTRS)

    1994-01-01

    activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  6. Space Radar Image of Long Valley, California in 3-D

    NASA Technical Reports Server (NTRS)

    1994-01-01

    induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v. (DLR), the major partner in science, operations and data processing of X-SAR.

  7. Space Radar Image of Kennedy Space Center, Florida

    NASA Technical Reports Server (NTRS)

    1999-01-01

    This is an X-band Synthetic Aperture Radar image spanning an area of about 20 kilometers by 40 kilometers (12 miles by 25 miles) of the Kennedy Space Center, Florida. At the top right are cloud-like structures which indicate rain. X-SAR is able to image heavy rainfall. The Atlantic Ocean is at the upper right. The shuttle landing strip is seen at the top left of the image. The Vertical Assembly Building, the Orbiter Processing Facility and other associated buildings are seen as a white area to the right and just above the end of the shuttle strip. The shuttle launch pads are the two white areas near the top center of the image. The Banana River shows up as a large black area running north to south to the right of the image. The Indian River is on the left side of the image. Just above the image center is a cluster of white spots which are the major buildings of the Kennedy Space Center industrial area. This was the location of the reflector array that was constructed to form the letters 'KSC' by the KSC payload team. The data for these KSC images were taken on orbit 81 of the space shuttle Endeavour on the fourth day of the SIR-C/X-SAR mission. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio

  8. Space Radar Image of Manaus, Brazil

    NASA Technical Reports Server (NTRS)

    1999-01-01

    changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v. (DLR), the major partner in science, operations and data processing of X-SAR.

  9. Space Radar Image of Hong Kong, China

    NASA Technical Reports Server (NTRS)

    1994-01-01

    This is an X-SAR image spanning an area of approximately 20 kilometers by 40 kilometers (12 miles by 25 miles) of the island of Hong Kong, the Kowloon Peninsula and the new territories in southern China, taken by the imaging radar on board the space shuttle Endeavour on October 4, 1994. North is toward the top left corner of the image. The Kaitak Airport runway on Kowloon Peninsula (center right of image) was built on reclaimed land and extends almost 3 kilometers (nearly 2 miles) into Victoria Harbor. To the south of the harbor lies the island of Hong Kong. The bright areas around the harbor are the major residential and business districts. Housing more than six million residents, Hong Kong is the most densely populated area in the world. The large number of objects visible in the harbor and surrounding waters are a variety of sea-going vessels, anchored in one of the busiest seaports in the Far East. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in

  10. Space Radar Image of San Francisco, California

    NASA Technical Reports Server (NTRS)

    1994-01-01

    which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V. (DLR), the major partner in science, operations and data processing of X-SAR.

  11. North Central Thailand

    NASA Technical Reports Server (NTRS)

    1998-01-01

    NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations, and data processing of X-SAR.

  12. Space Radar Image of Raco Biomass Map

    NASA Technical Reports Server (NTRS)

    1999-01-01

    This biomass map of the Raco, Michigan, area was produced from data acquired by the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) onboard space shuttle Endeavour. Biomass is the amount of plant material on an area of Earth's surface. Radar can directly sense the quantity and organizational structure of the woody biomass in the forest. Science team members at the University of Michigan used the radar data to estimate the standing biomass for this Raco site in the Upper Peninsula of Michigan. Detailed surveys of 70 forest stands will be used to assess the accuracy of these techniques. The seasonal growth of terrestrial plants, and forests in particular, leads to the temporary storage of large amounts of carbon, which could directly affect changes in global climate. In order to accurately predict future global change, scientists need detailed information about current distribution of vegetation types and the amount of biomass present around the globe. Optical techniques to determine net biomass are frustrated by chronic cloud-cover. Imaging radar can penetrate through cloud-cover with negligible signal losses. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German

  13. MPLM On-Orbit Interface Dynamic Flexibility Modal Test

    NASA Technical Reports Server (NTRS)

    Bookout, Paul S.; Rodriguez, Pedro I.; Tinson, Ian; Fleming, Paolo

    2001-01-01

    Now that the International Space Station (ISS) is being constructed, payload developers have to not only verify the Shuttle-to-payload interface, but also the interfaces their payload will have with the ISS. The Multi Purpose Logistic Module (MPLM) being designed and built by Alenia Spazio in Torino, Italy is one such payload. The MPLM is the primary carrier for the ISS Payload Racks, Re-supply Stowage Racks, and the Resupply Stowage Platforms to re-supply the ISS with food, water, experiments, maintenance equipment and etc. During the development of the MPLM there was no requirement for verification of the on-orbit interfaces with the ISS. When this oversight was discovered, all the dynamic test stands had already been disassembled. A method was needed that would not require an extensive testing stand and could be completed in a short amount of time. The residual flexibility testing technique was chosen. The residual flexibility modal testing method consists of measuring the free-free natural frequencies and mode shapes along with the interface frequency response functions (FRF's). Analytically, the residual flexibility method has been investigated in detail by, MacNeal, Martinez, Carne, and Miller, and Rubin, but has not been implemented extensively for model correlation due to difficulties in data acquisition. In recent years improvement of data acquisition equipment has made possible the implementation of the residual flexibility method as in Admire, Tinker, and Ivey, and Klosterman and Lemon. The residual flexibility modal testing technique is applicable to a structure with distinct points (DOF) of contact with its environment, such as the MPLM-to-Station interface through the Common Berthing Mechanism (CBM). The CBM is bolted to a flange on the forward cone of the MPLM. During the fixed base test (to verify Shuttle interfaces) some data was gathered on the forward cone panels. Even though there was some data on the forward cones, an additional modal test was

  14. [CONSISTENCY OF MINI NUTRITIONAL ASSESSMENT TO IDENTIFY SARCOPENIA IN OLDER ADULTS IN NURSING HOMES IN BOGOTA, COLOMBIA].

    PubMed

    Díaz Muñoz, Gustavo Alfonso; Cárdenas Zuluaga, Diana María; Mesa Jimenez, Alfonso

    2015-07-01

    Introducción: la desnutrición y la sarcopenia son de alta prevalencia en el adulto mayor, compartiendo mecanismos fisiológicos y desenlaces adversos para la salud. Objetivos: cuantificar la consistencia del MNA con el diagnóstico de sarcopenia en el adulto mayor institucionalizado. Métodos: estudio transversal de consistencia, en 4 residencias geriátricas de Bogotá. El tamizaje y la valoración nutricional se hicieron con la forma larga Mini Nutritional Assessment; el diagnóstico de sarcopenia se hizo con el algoritmo y puntos de corte del Consenso Europeo (EWGSOP). Análisis estadístico: Ji2 de Pearson, U de Mann-Whitney y coeficiente kappa de Cohen. Resultados y discusión: participaron 108 personas, 62% mujeres, con una edad promedio de 80,4 años (DE 7,7). La prevalencia de sarcopenia, riesgo de desnutrición y desnutrición fueron del 38,9%, 33,3% y 2,8%, respectivamente. La concordancia del MNA con el diagnóstico de sarcopenia fue leve (kappa 0,1908 IC95% 0,0025 a 0,3791; p < 0.05) Conclusión: la leve concordancia del MNA para identificar la sarcopenia sugiere que no es una herramienta adecuada para el diagnóstico de sarcopenia en los adultos mayores institucionalizados.

  15. Controlled rephasing of single spin-waves in a quantum memory based on cold atoms

    NASA Astrophysics Data System (ADS)

    Farrera, Pau; Albrecht, Boris; Heinze, Georg; Cristiani, Matteo; de Riedmatten, Hugues; Quantum Photonics With Solids; Atoms Team

    2015-05-01

    Quantum memories for light allow a reversible transfer of quantum information between photons and long lived matter quantum bits. In atomic ensembles, this information is commonly stored in the form of single collective spin excitations (spin-waves). In this work we demonstrate that we can actively control the dephasing of the spin-waves created in a quantum memory based on a cold Rb87 atomic ensemble. The control is provided by an external magnetic field gradient, which induces an inhomogeneous broadening of the atomic hyperfine levels. We show that acting on this gradient allows to control the dephasing of individual spin-waves and to induce later a rephasing. The spin-waves are then mapped into single photons, and we demonstrate experimentally that the active rephasing preserves the sub-Poissonian statistics of the retrieved photons. Finally we show that this rephasing control enables the creation and storage of multiple spin-waves in different temporal modes, which can be selectively readout. This is an important step towards the implementation of a functional temporally multiplexed quantum memory for quantum repeaters. We acknowledge support from the ERC starting grant, the Spanish Ministry of Economy and Competitiveness, the Fondo Europeo de Desarrollo Regional, and the International PhD- fellowship program ``la Caixa''-Severo Ochoa @ICFO.

  16. Plate tectonics and petroleum potential of the Laptev Sea region

    SciTech Connect

    Savostin, L.; Drachev, S.; Baturin, D. )

    1991-08-01

    About 1,600 km of multichannel seismic data with simultaneous gravity and magnetic measurements were collected in the Laptev Sea during 1989. Additionally, a 100 km onshore seismic reflection profile transected the northern termination of the Verrkoyansky Mountains. Data interpretation showed the following. The tectonic patterns of the Laptev Sea region was formed as a result of two major tectonic phases. The first phase was associated with collisions between the Paleozoic passive margin of Siberia and a number of allochthonous terrains which were previously parts of the North American Paleo-Pacific plate. These tectonic events accompanied the opening of the Canadian basin and ended in the second half of the Early Cretaceous. The second phase was a result of the opening of the Makarov and the Europeo-Asiatic basins, which caused the rifting processes within the Laptev Sea Shelf. Seismic onshore data show that the orogenic sequence consists of allochthonous plates which were thrust onto the thick sedimentary cover the Siberia platform. An underthrusting sedimentary sequence is situated at depths from 3 to 5 km, which present a good possibility to reach by the drill. The geological analogy with Appalachian Mountains United States, permits one to propose a high petroleum potential for this area. A system of offshore Laptev Sea grabens consisting of a series of alternating tilted and thrusted blocks, along with intrablock pre-drift sediments, are promising as potential hydrocarbon traps. This is akin to structural setting within North Sea oil and gas province.

  17. Artist meets computer

    NASA Astrophysics Data System (ADS)

    Faggin, Marzia

    1997-04-01

    I would like to share my experience ofusing the computer for creating art. I am a graphic designer originally trained without any exposure to the computer. I graduated in July of 1994 from a four-year curriculum of graphic design at the Istituto Europeo di Design in Milan Italy. Italy is famous for its excellent design capability. Art and beauty influence the life ofnearly every Italian. Everywhere you look on the streets there is art from grandiose architecture to the displays in shop windows. A keen esthetic sense and a search and appreciation for quality permeate all aspects of Italian life, manifesting in the way people cut their hair, the style ofthe clothes and how furniture and everyday objects are designed. Italian taste is fine-tuned to the appreciation ofrefined textiles and quality materials are often enhanced by simple design. The Italian culture has a long history ofexcellent artisanship and good craftsmanship is highly appreciated. Gadgets have never been popular in Italian society. Gadgets are considered useless objects which add nothing to a person's life, and since they cost money they are actually viewed as a waste. The same is true for food, exception made in the big cities filled with tourists, fast food chains have never survived. Genuine and simple food is what people truly desire. A typical Italian sandwich, for example, is minimalist, the essential ingredients are left alone without additional sauces because if something is delicious by itselfwhy would anyone want to disgnise its taste?

  18. Metabolic potential of the organic-solvent tolerant Pseudomonas putida DOT-T1E deduced from its annotated genome

    PubMed Central

    Udaondo, Zulema; Molina, Lazaro; Daniels, Craig; Gómez, Manuel J; Molina-Henares, María A; Matilla, Miguel A; Roca, Amalia; Fernández, Matilde; Duque, Estrella; Segura, Ana; Ramos, Juan Luis

    2013-01-01

    Summary Pseudomonas putida DOT-T1E is an organic solvent tolerant strain capable of degrading aromatic hydrocarbons. Here we report the DOT-T1E genomic sequence (6 394 153 bp) and its metabolic atlas based on the classification of enzyme activities. The genome encodes for at least 1751 enzymatic reactions that account for the known pattern of C, N, P and S utilization by this strain. Based on the potential of this strain to thrive in the presence of organic solvents and the subclasses of enzymes encoded in the genome, its metabolic map can be drawn and a number of potential biotransformation reactions can be deduced. This information may prove useful for adapting desired reactions to create value-added products. This bioengineering potential may be realized via direct transformation of substrates, or may require genetic engineering to block an existing pathway, or to re-organize operons and genes, as well as possibly requiring the recruitment of enzymes from other sources to achieve the desired transformation. Funding Information Work in our laboratory was supported by Fondo Social Europeo and Fondos FEDER from the European Union, through several projects (BIO2010-17227, Consolider-Ingenio CSD2007-00005, Excelencia 2007 CVI-3010, Excelencia 2011 CVI-7391 and EXPLORA BIO2011-12776-E). PMID:23815283

  19. [OVERWEIGHT AND OBESITY IN CHILDREN AND ADOLESCENTS IN FULL TIME SCHOOLS MORELOS, MÉXICO].

    PubMed

    González Rosendo, Guillermina; Villanueva Sánchez, Javier; Alcantar Rodríguez, Victor Eduardo; Quintero Gutiérrez, Adrián Guillermo

    2015-12-01

    Introducción: es común que los escolares en México presenten bajos consumos de algunos nutrimentos, y elevados consumos de energía total, grasas y sodio; también es frecuente que su actividad física sea insuficiente, lo que propicia la presencia de sobrepeso y obesidad. Objetivo: el propósito de este estudio fue identificar la prevalencia de sobrepeso y obesidad en los alumnos de escuelas de tiempo completo del estado de Morelos (México). Sujetos y métodos: estudio transversal en 30.966 alumnos de 3 a 15 años, asistentes a 186 escuelas. El estado nutricional se obtuvo a través del Índice de Masa Corporal, considerando la edad y el género; el peso se midió con básculas SECA 813 y la talla con estadímetros SECA 213; se utilizaron patrones de referencia internacionales. Resultados: de 36.482 niños y niñas censados, se midió a 30.966 (84,9%) que asistieron el día de visita. La prevalencia global de bajo peso se aproximó al 8% y la prevalencia conjunta de sobrepeso y obesidad superó el 25%. Fueron más altas las prevalencias de bajo peso y obesidad en los hombres. Conclusiones: uno de cada 12 niños tiene bajo peso; uno de cada cuatro, sobrepeso y uno de cada nueve, obesidad. La población masculina es más vulnerable a padecer consecuencias por deficiencias y excesos nutricionales. Son necesarios estudios específicos para diferenciar y atender la obesidad de tipo primario y los riesgos asociados, para definir acciones futuras.

  20. Validating posttransplant hepatocellular carcinoma recurrence data in the United Network for Organ Sharing database.

    PubMed

    Samoylova, Mariya L; Dodge, Jennifer L; Vittinghoff, Eric; Yao, Francis Y; Roberts, John Paul

    2013-12-01

    The Organ Procurement and Transplantation Network (OPTN)/United Network for Organ Sharing (UNOS) database is the most comprehensive collection of liver transplantation data, but the quality of these data with respect to hepatocellular carcinoma (HCC) recurrence has not been well assessed. In this study, we compared observed HCC recurrence rates in the UNOS database to expected rates calculated with a hierarchical model for recurrence adjusted for recipient and tumor characteristics. We used the UNOS Standard Transplant Analysis and Research data set for adult transplant patients with an initial exception for an HCC diagnosis granted between January 1, 2006 and September 30, 2010 who underwent transplantation within the same time window. We developed a risk-adjusted Poisson model with patients as the unit of analysis, random effects for transplant centers, and years of follow-up as an offset to predict expected recurrences for each center. To further investigate the possibility of underreporting, we imputed expected recurrences for non-HCC deaths. In all, 5034 HCC liver transplant recipients were identified, and 6.8% experienced recurrence at a median of 1 year after transplantation. The covariate-adjusted shrinkage estimates of the observed/expected HCC recurrence ratios by transplant center ranged from 0.6 to 1.76 (median = 0.97). The 95% confidence intervals for the shrinkage ratios included unity for every center, and this indicated that none could be unambiguously identified as having lower or higher than expected HCC recurrence rates. Imputing outcomes for patients potentially experiencing unreported recurrence changed the center-specific shrinkage ratios to 0.72 to 1.39 (median = 0.98), with no centers having a shrinkage ratio significantly different from 1. The observed HCC recurrence rate was not significantly lower than the expected rate at any center, and this suggests that no systematic underreporting has occurred. This study validates the OPTN HCC

  1. Bathymetric survey of the nearshore from Belle Pass to Caminada Pass, Louisiana: methods and data report

    USGS Publications Warehouse

    DeWitt, Nancy T.; Flocks, James G.; Hansen, Mark; Kulp, Mark; Reynolds, B.J.

    2007-01-01

    The U.S. Geological Survey (USGS), in cooperation with the University of New Orleans (UNO) and the Louisiana Department of Natural Resources (LDNR), conducted a high-resolution, single-beam bathymetric survey along the Louisiana southern coastal zone from Belle Pass to Caminada Pass. The survey consisted of 483 line kilometers of data acquired in July and August of 2005. This report outlines the methodology and provides the data from the survey. Analysis of the data and comparison to a similar bathymetric survey completed in 1989 show significant loss of seafloor and shoreline retreat, which is consistent with previously published estimates of shoreline change in the study area.

  2. Finite-volume effects and the electromagnetic contributions to kaon and pion masses

    SciTech Connect

    Basak, Subhasish; Bazavov, Alexei; Bernard, Claude; Detar, Carleton; Freeland, Elizabeth; Foley, Justin; Gottlieb, Steven; Heller, Urs M.; Komijani, Javad; Laiho, Jack; Levkova, Ludmila; Osborn, James; Sugar, Robert; Torok, Aaron; Toussaint, Doug; Van de Water, Ruth S.; Zhou, Ran

    2014-09-25

    We report on the MILC Collaboration calculation of electromagnetic effects on light pseudoscalar mesons. The simulations employ asqtad staggered dynamical quarks in QCD plus quenched photons, with lattice spacings varying from 0.12 to 0.06 fm. Finite volume corrections for the MILC realization of lattice electrodynamics have been calculated in chiral perturbation theory and applied to the lattice data. These corrections differ from those calculated by Hayakawa and Uno because our treatment of zero modes differs from theirs. Updated results for the corrections to "Dashen's theorem" are presented.

  3. The Conference Proceedings of the 1999 Air Transport Research Group (ATRG) of the WCTR Society. Volume 1

    NASA Technical Reports Server (NTRS)

    Zhang, Anming (Editor); Bowen, Brent D. (Editor)

    1999-01-01

    The UNO (University of Nebraska at Omaha) Aviation Institute Monograph Series began in 1994 as a key component of the education outreach and information transfer missions of the Aviation Institute and the NASA Nebraska Space Grant & EPSCoR (Experimental Program to Stimulate Competitive Research) Programs. The series is an outlet for aviation materials to be indexed and disseminated through an efficient medium. Publications are welcome in all aspects of aviation. Publication formats may include, but are not limited to, conference proceedings, bibliographies, research reports, manuals, technical reports, and other documents that should be archived and indexed for future reference by the aviation and world wide communities.

  4. NASA Nebraska Space Grant 5 Year Proposal

    NASA Technical Reports Server (NTRS)

    Bowen, Brent D.; Vlasek, Karisa; Russell, Valerie; Woods, Sara; Webb, Cindy; Schaaf, Michaela; Vlasek, Scott; Wurdeman, Melissa; Lucas, Sarah; Tegeder, Amy

    2004-01-01

    The UNO Aviation Institute Monograph Series began in 1994 as a key component of the education outreach and information transfer missions of the Aviation Institute and the NASA Nebraska Space Grant & EPSCoR Programs. The series is an outlet for aviation materials to be indexed and disseminated through an efficient medium. Publications are welcome in all aspects of aviation. Publication formats may include, but are not limited to, conference proceedings, bibliographies, research reports, manuals, technical reports, and other documents that should be archived and indexed for future reference by the aviation and world wide communities.

  5. Aplicación del Teorema de Nekhorochev para tiempos de estabilidad en Mecánica Celeste

    NASA Astrophysics Data System (ADS)

    Miloni, O.; Núñez, J.; Brunini, A.

    En Mecánica Celeste, uno de los problemas centrales consiste en la determinación de los tiempos de estabilidad. El teorema de Nekhorochev proporciona un método para dicho estudio, para un sistema determinado por un hamiltoniano descripto en las variables acción-ángulo. El trabajo consiste en la acotación tanto del potencial perturbador y de la matriz hessiana del hamiltoniano integrable para determinar luego el tiempo de estabilidad de dicho sistema, donde por estabilidad se entiende la separación en norma infinito en el espacio de las acciones.

  6. Búsqueda de variables en Trumpler 14

    NASA Astrophysics Data System (ADS)

    Giorgi, E.; Baume, G. L.; Vázquez, R. A.

    Se presentan resultados preliminares de una búsqueda de variables en el campo del cúmulo abierto Trumpler 14 iniciada durante 1996 con un CCD de 512x512 y continuada en 1997 con uno de 1024x1024, utilizando en ambos casos el telescopio de 60 cm del Toronto Southern Observatory. Las estrellas de comparación pertenecen al mismo cúmulo y han sido elegidas dentro del intervalo de magnitudes y colores de aquellas a las cuales se les analiza la posible variabilidad.

  7. Nebraska Initiative for Aerospace Research and Industrial Development (NIARID)

    NASA Technical Reports Server (NTRS)

    Bowen, Brent; Reichenbach, Steve; Ianno, Ned; Farr, Lynne; Tarry, Scott; Narayanan, Ram; Lehrer, Henry

    2002-01-01

    The UNO Aviation Institute Monograph Series began in 1994 as a key component of the education outreach and information transfer missions of the Aviation Institute and the NASA Nebraska Space Grant & EPSCoR Programs. The series is an outlet for aviation materials to be indexed and disseminated through an efficient medium. Publications are welcome in all aspects of aviation. Publication formats may include, but are not limited to, conference proceedings, bibliographies, research reports, manuals, technical reports, and other documents that should be archived and indexed for future reference by the aviation and world wide communities.

  8. The Conference Proceedings of the 2003 Air Transport Research Society (ATRS) World Conference, Volume 2

    NASA Technical Reports Server (NTRS)

    Bowen, Brent (Editor); Gudmundsson, Sveinn (Editor); Oum, Tae (Editor)

    2003-01-01

    The UNO Aviation Institute Monograph Series began in 1994 as a key component of the education outreach and information transfer missions of the Aviation Institute and the NASA Nebraska Space Grant & EPSCoR Programs. The series is an outlet for aviation materials to be indexed and disseminated through an efficient medium. Publications are welcome in all aspects of aviation. Publication formats may include, but are not limited to, conference proceedings, bibliographies, research reports, manuals, technical reports, and other documents that should be archived and indexed for future reference by the aviation and world wide communities.

  9. NASA EPSCoR Nebraska Preparation Grant: Year 1

    NASA Technical Reports Server (NTRS)

    Bowen, Brent D.; Holmes, Bruce J.; Bartle, John R.; Gogos, George; Hinton, David W.; Lehrer, Henry R.; Moussavi, Massoum; Reed, B. J.; Schaaf, Michaela M.; Smith, Russell L.; Vlasek, Scott E.; Woods, Sara J.

    1999-01-01

    The UNO Aviation Institute Monograph Series began in 1994 as a key component of the education outreach and information transfer missions of the Aviation Institute and the NASA Nebraska Space Grant & EPSCOR (Experimental Program to Stimulate Competitive Research) Programs. The series is an outlet for aviation materials to be indexed and disseminated through an efficient medium. Publications are welcome in all aspects of aviation. Publication formats may include, but are not limited to, conference proceedings, bibliographies, research reports, manuals, technical reports, and other documents that should be archived and indexed for future reference by the aviation and world wide communities.

  10. An Arduino Investigation of the RC Circuit

    NASA Astrophysics Data System (ADS)

    Galeriu, Calin; Letson, Cheryl; Esper, Geoffrey

    2015-05-01

    The experimental investigation of the charging or discharging of a capacitor through a resistor is of fundamental importance to the study of electricity. Students taking the Physics SAT or the AP Physics C: Electricity and Magnetism test have to prove their knowledge of time-varying behavior in RC circuits. While the classical experiment is done using a voltmeter and a stopwatch, this procedure is tedious and prone to human errors. We have developed an alternative procedure in which the voltage, the current, and the time are all measured electronically with the help of an Arduino Uno microcontroller board.

  11. Aeronautics Education, Research, and Industry Alliance (AERIAL) Year 2 Report and Year 3 Proposal

    NASA Technical Reports Server (NTRS)

    Bowen, Brent D.; Box, Richard C.; Fink, Mary M.; Gogos, George; Lehrer, Henry R.; Narayanan, Ram M.; Nickerson, Jocelyn S.; Tarry, Scott E.; Vlasek, Karisa D.

    2003-01-01

    The UNO Aviation Institute Monograph Series began in 1994 as a key component of the education outreach and information transfer missions of the Aviation Institute and the NASA Nebraska Space Grant & EPSCoR Programs. The series is an outlet for aviation materials to be indexed and disseminated through an efficient medium. Publications are welcome in all aspects of aviation. Publication formats may include, but are not limited to, conference proceedings, bibliographies, research reports, manuals, technical reports, and other documents that should be archived and indexed for future reference by the aviation and world wide communities.

  12. Observaciones del CH interestelar y el continuo en 3,3 GHz

    NASA Astrophysics Data System (ADS)

    Olano, C. A.; Combi, J. A.; Pöppel, W.; Benaglia, P.; Sanz, A. J.; Bava, J. A.

    Se informa sobre el proyecto que se lleva a cabo en el IAR con el propósito de observar las líneas hiperfinas del estado fundamental del CH y el continuo en la banda de 3,3 GHz. El nuevo receptor construído en nuestro laboratorio para tal fin se instaló sobre uno de los radiotelescopios, funcionando conjuntamente con los sistemas de procesamiento actuales del IAR. Los resultados de las primeras observaciones, realizadas tanto en las líneas espectrales como en el continuo sobre fuentes conocidas, fueron satisfactorios.

  13. How does parents' visual perception of their child's weight status affect their feeding style?

    PubMed

    Yilmaz, Resul; Erkorkmaz, Ünal; Ozcetin, Mustafa; Karaaslan, Erhan

    2013-01-01

    Introducción: El estilo de alimentación es uno de los factores prominentes que determina la ingesta de energía. Uno de los factores que influyen en el estilo de alimentación paterna es la percepción de los padres del estado de peso del niño. Objetivo: El propósito de este estudio fue evaluar la relación entre la percepción visual de la madre del estado de peso de su hijo y su estilo de alimentación. Método: Se realizó un estudio transversal con madres de 380 niños preescolares de 5 a 7 (6,14 años). Las puntuaciones de la percepción visual se midieron mediante unos dibujos y el estilo de alimentación materna se medió con el cuestionario validado “Parental Feeding Style Questionnaire”. Resultados: Las puntuaciones de las subescalas de las dimensiones de alimentación parental “alimentación emocional” y “animar a comer” eran bajas en niños con sobrepeso de acuerdo con la clasificación de la percepción visual. Las puntuaciones de las subescalas “alimentación emocional” y “control permisivo” eran estadísticamente distintas en los niños clasificados como correctamente percibidos e incorrectamente percibidos bajos por una mala percepción materna. Conclusión: Diversos estilos de alimentación se relacionaban con la percepción visual materna. El mejor abordaje para evitar la obesidad y el peso bajo podría estar en centrarse en conseguir una correcta percepción parental del estado de peso de sus hijos, mejorando así las habilidades paternas y conllevando la implantación de unos estilos de alimentación adecuados.

  14. A panchromatic view of the evolution of Supermassive Black Holes

    NASA Astrophysics Data System (ADS)

    Lusso, E.; Brusa, M.; Comastri, A.; Vignali, C.; Gilli, R.

    2008-10-01

    Verranno presentati i risultati preliminari di uno studio sistematico delle distribuzioni di energia spettrale (SED) di un campione statisticamente significativo di alcune centinaia di AGN (sia di tipo 1 che di tipo 2) selezionati dalla survey XMM-COSMOS. La vasta mole di dati disponibili sull'intero spettro elettromagnetico permette di calcolare le SED medie per diversi intervalli di redshift e luminosita'. Una stima affidabile della SED e' di fondamentale importanza per il calcolo della luminosita' bolometrica e quindi per lo studio della fisica dei processi di accrescimento su SMBH, per la loro evoluzione con il tempo cosmico.

  15. [PREVALENCE OF THINNESS, OVERWEIGHT AND OBESITY AMONG 4-TO-6-YEAR-OLD SPANISH SCHOOLCHILDREN IN 2013; SITUATION IN THE EUROPEAN CONTEXT].

    PubMed

    González García, Alberto; Álvarez Bueno, Celia; Lucas de la Cruz, Lidia; Sánchez López, Mairena; Solera Martínez, Montserrat; Díez Fernández, Ana; Martínez Vizcaíno, Vicente

    2015-10-01

    Introducción y objetivos: tanto el exceso de peso como la delgadez se relacionan con diversos problemas de salud que pueden continuar hasta la edad adulta. Los objetivos de este estudio fueron estimar la prevalencia de delgadez, sobrepeso y obesidad en escolares de 4-6 años de las provincias de Cuenca y Ciudad Real (España), mediante criterios del Grupo Internacional de Trabajo sobre Obesidad y de la Organización Mundial de la Salud, y comparar estas cifras con otros estudios europeos. Métodos: estudio observacional-transversal que incluyó a 1.585 escolares realizado en septiembre de 2013. Las mediciones de peso y talla fueron realizadas por enfermeras entrenadas y mediante procedimientos estandarizados. El estatus ponderal se definió según los criterios del Grupo Internacional de Trabajo sobre Obesidad y la Organización Mundial de la Salud. Resultados: según criterios del Grupo Internacional de Trabajo sobre Obesidad, la prevalencia de delgadez, sobrepeso y obesidad fue del 20,51%, 11,84% y 8,58%, respectivamente; y del 3,97%, 13,92% y 10,79% cuando se utilizaron los criterios de la Organización Mundial de la Salud. No se encontraron diferencias estadísticamente significativas por sexo ni provincia para ninguna categoría de estatus ponderal. Para ambos criterios, la prevalencia de delgadez fue menor a medida que aumentaba la edad, mientras que la prevalencia de sobrepeso/obesidad fue mayor. Conclusiones: la prevalencia de exceso de peso podría haber tocado techo en España, aunque continúa siendo un importante problema de salud pública. El aumento de la prevalencia de bajo peso debería ocupar un lugar relevante en las intervenciones de salud pública.

  16. [New coronavirus infection: new challenges, new legacies].

    PubMed

    Cabrera-Gaytán, David Alejandro; Vargas-Valerio, Alfredo; Grajales-Muñiz, Concepción

    2014-01-01

    Introducción: emergió una nueva enfermedad por coronavirus. Su historia natural y sus determinantes todavía se están investigando. Se carece de una publicación que estudie todos los casos identificados en el mundo, por lo que el objetivo de este artículo estriba en describir los casos y defunciones por el nuevo coronavirus. Métodos: se revisaron las publicaciones en línea de la Organización Mundial de la Salud, del Centro Europeo para el Control y Prevención de Enfermedades y de la Eurosurveillance. Se realizó un análisis descriptivo de los casos, se calcularon los límites para proporciones con un alfa del 0.05 por prueba de Wilson y una prueba t de Student para diferencia de medias. Resultados: son 17 casos confirmados y 11 defunciones en varios países de Asia y Europa; predominaron los pacientes masculinos. La tasa de letalidad fue de 64.70 %; los que fallecieron se hospitalizaron cinco días después de los primeros síntomas. Se carece de publicaciones que describan la historia natural de la enfermedad; sin embargo, lo descrito en las publicaciones de Europa coincide con los resultados de este estudio. Conclusión: es necesario continuar con la vigilancia epidemiológica y la realización de nuevos estudios para evaluar el impacto de esta enfermedad en la salud pública internacional.

  17. Primary CNS lymphoproliferative disease, mycophenolate and calcineurin inhibitor usage

    PubMed Central

    Crane, Genevieve M.; Powell, Helen; Kostadinov, Rumen; Rocafort, Patrick Tim; Rifkin, Dena E.; Burger, Peter C.; Ambinder, Richard F.; Swinnen, Lode J.; Borowitz, Michael J.; Duffield, Amy S.

    2015-01-01

    Immunosuppression for solid organ transplantation increases lymphoproliferative disease risk. While central nervous system (CNS) involvement is more rare, we noticed an increase in primary CNS (PCNS) disease. To investigate a potential association with the immunosuppressive regimen we identified all post-transplant lymphoproliferative disease (PTLD) cases diagnosed over a 28-year period at our institution (174 total, 29 PCNS) and all similar cases recorded in a United Network for Organ Sharing-Organ Procurement and Transplant Network (UNOS-OPTN) data file. While no PCNS cases were diagnosed at our institution between 1986 and 1997, they comprised 37% of PTLD cases diagnosed from 2011–2014. PCNS disease was more often associated with renal vs. other organ transplant, Epstein-Barr virus, large B-cell morphology and mycophenolate mofetil (MMF) as compared to PTLD that did not involve the CNS. Calcineurin inhibitors were protective against PCNS disease when given alone or in combination with MMF. A multivariate analysis of a larger UNOS-OPTN dataset confirmed these findings, where both MMF and lack of calcineurin inhibitor usage were independently associated with risk for development of PCNS PTLD. These findings have significant implications for the transplant community, particularly given the introduction of new regimens lacking calcineurin inhibitors. Further investigation into these associations is warranted. PMID:26460822

  18. Discos de acreción circumplanares: Modelo de Co-acreción

    NASA Astrophysics Data System (ADS)

    Parisi, M. G.; de Elía, G.

    Los discos de acreción circumplanetarios precursores de los satélites regulares de los planetas gigantes, se pueden formar por cuatro mecanismos (Pollack y otros, 1991, In Uranus, Bergtralh, Miner y Mattews, Eds., p. 469, Univ. de Arizona Press, Tucson). En este trabajo estudiamos uno de tales mecanismos: el Modelo de Co-acreción. En dicho modelo, el disco circumplanetario se forma a partir de las colisiones mutuas entre planetesimales dentro de la esfera de Hill del planeta durante el proceso de formación planetaria. Realizamos un modelo semi-analítico para calcular la masa del disco y compararla con la masa requerida para formar los satélites regulares de los planetas gigantes. Hemos obtenido una cota superior para la masa del disco que resulta inferior a la masa de los satélites más grandes de los planetas gigantes. En principio, estos resultados permitirían descartar el modelo de co-acreción como uno de los procesos que podrían dar lugar a la formación de los satélites regulares. Estos resultados permiten obtener restricciones en el escenario de formación planetaria y en los mecanismos de formación de sistemas de satélites.

  19. Pancreas After Islet Transplantation: A First Report of the International Pancreas Transplant Registry.

    PubMed

    Gruessner, R W G; Gruessner, A C

    2016-02-01

    Pancreas after islet (PAI) transplantation is a treatment option for patients seeking insulin independence through a whole-organ transplant after a failed cellular transplant. This report from the International Pancreas Transplant Registry (IPTR) and the United Network for Organ Sharing (UNOS) studied PAI transplant outcomes over a 10-year time period. Forty recipients of a failed alloislet transplant subsequently underwent pancreas transplant alone (50%), pancreas after previous kidney transplant (22.5%), or simultaneous pancreas and kidney (SPK) transplant (27.5%). Graft and patient survival rates were not statistically significantly different compared with matched primary pancreas transplants. Regardless of the recipient category, overall 1- and 5-year PAI patient survival rates for all 40 cases were 97% and 83%, respectively; graft survival rates were 84% and 65%, respectively. A failed previous islet transplant had no negative impact on kidney graft survival in the SPK category: It was the same as for primary SPK transplants. According to this IPTR/UNOS analysis, a PAI transplant is a safe procedure with low recipient mortality, high graft-function rates in both the short and long term and excellent kidney graft outcomes. Patients with a failed islet transplant should know about this alternative in their quest for insulin independence through transplantation.

  20. A primary subcutaneous hydatid cyst in the thigh A case report.

    PubMed

    Salamone, Giuseppe; Licari, Leo; Randisi, Brenda; Di Carlo, Paola; Tutino, Roberta; Falco, Nicolò; Augello, Giuseppe; Raspanti, Cristina; Cocorullo, Gianfranco; Gulotta, Gaspare

    2016-04-08

    L’Echinococcus spp. rappresenta il movente eziopatogenetico della malattia idatidea, patologia a carattere endemico in diverse parti del mondo, con tipica localizzazione della cisti da echinococco, prodotto del ciclo vitale del parassita, in sede polmonare od epatica. Ciononostante le localizzazioni atipiche della malattia esistono e rappresentano circa il 1,6% dei casi, la più comune delle quali certamente quella sottocutanea. I dati a disposizione circa la diagnosi ed il trattamento delle rare forme a localizzazione atipica risultano disomogenei e pochi dirimenti circa uno standard diagnostico-terapeutico da adottare. Si è voluto presentare dunque il caso di una donna di 68 anni che lamentava la comparsa di una tumefazione al terzo prossimale della coscia dx che tendeva ad incrementarsi volumetricamente nel tempo. Dopo diverse indagini cliniche, oltre che una accurata anamnesi, il sospetto di cisti idatidea è stato confermato. La patologia è stata trattata secondo uno schema terapeutico chirurgico e farmacologico ben dettagliato. La raccolta di questi dati si prefigge lo scopo di pianificare, in accordo con la letteratura scientifica e la review dei case-report esistenti, linee guida nel percorso assistenziale di questa rara manifestazione di una comune malattia.

  1. Using Quantum Confinement to Uniquely Identify Devices

    NASA Astrophysics Data System (ADS)

    Roberts, J.; Bagci, I. E.; Zawawi, M. A. M.; Sexton, J.; Hulbert, N.; Noori, Y. J.; Young, M. P.; Woodhead, C. S.; Missous, M.; Migliorato, M. A.; Roedig, U.; Young, R. J.

    2015-11-01

    Modern technology unintentionally provides resources that enable the trust of everyday interactions to be undermined. Some authentication schemes address this issue using devices that give a unique output in response to a challenge. These signatures are generated by hard-to-predict physical responses derived from structural characteristics, which lend themselves to two different architectures, known as unique objects (UNOs) and physically unclonable functions (PUFs). The classical design of UNOs and PUFs limits their size and, in some cases, their security. Here we show that quantum confinement lends itself to the provision of unique identities at the nanoscale, by using fluctuations in tunnelling measurements through quantum wells in resonant tunnelling diodes (RTDs). This provides an uncomplicated measurement of identity without conventional resource limitations whilst providing robust security. The confined energy levels are highly sensitive to the specific nanostructure within each RTD, resulting in a distinct tunnelling spectrum for every device, as they contain a unique and unpredictable structure that is presently impossible to clone. This new class of authentication device operates with minimal resources in simple electronic structures above room temperature.

  2. Why not the University of New Orleans? Social disorganization and sexual violence among internally displaced women of Hurricane Katrina.

    PubMed

    Fagen, Jennifer L; Sorensen, William; Anderson, Peter B

    2011-10-01

    Researchers have reported that natural disasters lead to an increase in sexual violence against women and this is echoed by the current situation in Haiti. This is a social pattern throughout the world during periods of war, as well as natural disasters such as tsunamis, famine, and hurricanes. This article examines the prevalence of sexual violence experienced by women students at the University of New Orleans (UNO) before and after Hurricane Katrina using the CORE Alcohol and Drug Survey. Two hundred and thirty seven women participated in the pre-Katrina study and 215 women participated in the post-Katrina study. We hypothesized that, due to the trauma of this disaster, there would be a higher prevalence of sexual aggression against women after Katrina than there was before Katrina. Our analyses yielded no significant differences in any of the measures of sexual violence toward women (nine CORE survey items) pre to post Katrina, so our hypothesis was not supported. We suggest that social organization and cultural attenuation--often indicators of sexual assault in FEMA Greenfield communities--were mitigated by social cohesion found on the UNO campus post-Katrina. PMID:21298398

  3. Why not the University of New Orleans? Social disorganization and sexual violence among internally displaced women of Hurricane Katrina.

    PubMed

    Fagen, Jennifer L; Sorensen, William; Anderson, Peter B

    2011-10-01

    Researchers have reported that natural disasters lead to an increase in sexual violence against women and this is echoed by the current situation in Haiti. This is a social pattern throughout the world during periods of war, as well as natural disasters such as tsunamis, famine, and hurricanes. This article examines the prevalence of sexual violence experienced by women students at the University of New Orleans (UNO) before and after Hurricane Katrina using the CORE Alcohol and Drug Survey. Two hundred and thirty seven women participated in the pre-Katrina study and 215 women participated in the post-Katrina study. We hypothesized that, due to the trauma of this disaster, there would be a higher prevalence of sexual aggression against women after Katrina than there was before Katrina. Our analyses yielded no significant differences in any of the measures of sexual violence toward women (nine CORE survey items) pre to post Katrina, so our hypothesis was not supported. We suggest that social organization and cultural attenuation--often indicators of sexual assault in FEMA Greenfield communities--were mitigated by social cohesion found on the UNO campus post-Katrina.

  4. [Pharmacological strategies to improve the adherence to highly active antiretroviral therapy].

    PubMed

    Clapé-Laffita, Oneyda

    2013-01-01

    Introducción: la adherencia a la terapia antirretroviral es un factor importante para suprimir el virus de la inmunodeficiencia humana. El propósito de la investigación que se presenta fue aplicar estrategias farmacológicas basadas en medidas farmacocinéticas para facilitar la adherencia a la terapia antirretroviral. Métodos: se realizó un estudio descriptivo durante ocho meses, con 75 pacientes positivos al virus de inmunodeficiencia humana, con criterios clínicos y sociales para una terapia antirretroviral altamente activa, en Opuwo, Namibia. Se analizaron aspectos farmacológicos como la no existencia de efectos adversos graves ni interacciones medicamentosas riesgosas. El análisis de resultado fue realizado con estadística descriptiva. Resultados: fueron detectados tres efectos adversos leves (dos para efavirenz y uno para nevirapina) y uno grave para estavudina/lamivudina. Se evitaron las interacciones medicamentosas riesgosas aplicando medidas farmacocinéticas con efavirenz, estavudina/ lamivudina y zidovudina; así como entre nevirapina y fluconazol (o ketoconazol). Conclusiones: la adherencia a la terapia antirretroviral altamente activa se facilitó al aplicar las estrategias farmacológicas propuestas y se evitaron efectos adversos e interacciones medicamentosas riesgosas.

  5. Archive of Sediment Data Collected around the Chandeleur Islands and Breton Island in 2007 and 1987 (Vibracore Surveys: 07SCC04, 07SCC05, and 87039)

    USGS Publications Warehouse

    Dreher, C.A.; Flocks, J.G.; Kulp, M.A.; Ferina, N.F.

    2010-01-01

    In 2006 and 2007, the U.S. Geological Survey (USGS) and collaborators at the University of New Orleans (UNO) collected high-resolution seismic profiles and subsurface cores around the Chandeleur and Breton Islands, Louisiana (Study Area Map). To ground-truth the acoustic seismic surveys conducted in 2006, 124 vibracores were acquired during the 07SCC04 and 07SCC05 cruises in 2007. These cores were collected within the back-barrier, nearshore, and offshore environments. The surveys were conducted as part of a post-hurricane assessment and sediment resource inventory for the Barrier Island Coastal Monitoring (BICM) project. Vibracores were collected offshore using the USGS R/V G.K. Gilbert, while the terrestrial, back-barrier, and nearshore vibracores were collected from the UNO R/V Greenhead. This report serves as an archive of sediment data from two concurrent vibracore surveys (cruises 07SCC04 and 07SCC05) from around the Breton and Chandeleur Islands in 2007 and also documents sediment data from vibracores collected offshore of the Chandeleur Islands in 1987 (cruise 87039). The 1987 vibracores were collected through the collaborated efforts of the USGS, Louisiana Geological Survey (LGS), and Alpine Ocean Seismic. Each vibracore can be identified by cruise and core number.

  6. [Reliability and validity of an instrument to evaluate integral clinical competence in medical residents].

    PubMed

    Sepúlveda-Vildósola, Ana Carolina; Gaspar-López, Nadia; Reyes-Lagunes, Lucina Isabel; Gonzalez-Cabello, Héctor Jaime

    2015-01-01

    Introducción: la evaluación de la competencia clínica de un residente es un proceso complejo. Los profesores requieren de instrumentos confiables y válidos para evaluar objetivamente la competencia clínica. El objetivo fue evaluar la confiabilidad y validez de un instrumento (IECC) diseñado para evaluar la competencia clínica integral de los médicos residentes. Métodos: se diseñó un instrumento a partir de los diferentes pasos del método clínico, y se determinaron tres niveles de competencia para cada uno. El instrumento fue revisado respecto a su claridad, pertinencia y la suficiencia de sus indicadores planteados por cinco médicos pediatras expertos. Cada residente fue evaluado independientemente por tres médicos. Resultados: se obtuvieron en total 651 mediciones en 234 residentes. El instrumento discriminó entre grupos extremos. Se obtuvo un valor de alfa de Cronbach de 0.778 y el análisis factorial distinguió dos factores: competencia clínica y competencias complementarias. No se encontraron diferencias entre evaluadores en las calificaciones globales ni en cada uno de los indicadores. Conclusión: el instrumento propuesto es válido y confiable. Se propone como una herramienta más en la evaluación formativa de los médicos residentes de especialidades clínicas.

  7. Direction of the Organ Procurement and Transplantation Network and United Network for Organ Sharing regarding the oversight of live donor transplantation and solicitation for organs.

    PubMed

    Delmonico, F L; Graham, W K

    2006-01-01

    The Organ Procurement and Transplantation Network (OPTN) operated by United Network for Organ Sharing (UNOS) has taken recent steps to address public solicitation for organ donors and its oversight of live donor transplantation. This report provides the direction of the OPTN regarding deceased donor solicitation. The OPTN has authority under federal law to equitably allocate deceased donor organs within a single national network based upon medical criteria, not upon one's social or economic ability to utilize resources not available to all on the waiting list. The OPTN makes a distinction between solicitations for a live donor organ versus solicitations for directed donation of deceased organs. As to live donor solicitation, the OPTN cannot regulate or restrict ways relationships are developed in our society, nor does it seek to do so. OPTN members have a responsibility of helping protect potential recipients from hazards that can arise from public appeals for live donor organs. Oversight and support of the OPTN for live donor transplantation is now detailed by improving the reporting of live donor follow-up, by providing a mechanism for facilitating anonymous live kidney donation, and by providing information for potential live kidney donors via the UNOS Transplant Living website. PMID:16433754

  8. Using Quantum Confinement to Uniquely Identify Devices

    PubMed Central

    Roberts, J.; Bagci, I. E.; Zawawi, M. A. M.; Sexton, J.; Hulbert, N.; Noori, Y. J.; Young, M. P.; Woodhead, C. S.; Missous, M.; Migliorato, M. A.; Roedig, U.; Young, R. J.

    2015-01-01

    Modern technology unintentionally provides resources that enable the trust of everyday interactions to be undermined. Some authentication schemes address this issue using devices that give a unique output in response to a challenge. These signatures are generated by hard-to-predict physical responses derived from structural characteristics, which lend themselves to two different architectures, known as unique objects (UNOs) and physically unclonable functions (PUFs). The classical design of UNOs and PUFs limits their size and, in some cases, their security. Here we show that quantum confinement lends itself to the provision of unique identities at the nanoscale, by using fluctuations in tunnelling measurements through quantum wells in resonant tunnelling diodes (RTDs). This provides an uncomplicated measurement of identity without conventional resource limitations whilst providing robust security. The confined energy levels are highly sensitive to the specific nanostructure within each RTD, resulting in a distinct tunnelling spectrum for every device, as they contain a unique and unpredictable structure that is presently impossible to clone. This new class of authentication device operates with minimal resources in simple electronic structures above room temperature. PMID:26553435

  9. Financing the Airport of the Future: The Small Aircraft Transportation System

    NASA Technical Reports Server (NTRS)

    Bartle, John R.

    2000-01-01

    The objective of SATS is to reduce gridlock at hubs, reduce travel times, allow for personal control over travel, and anticipate demand shifts resulting from a migration from suburbs to rural places. The technology is presently available and economical to produce SATS aircraft. The public issue centers on the airports. SATS is a federal program, and many airports in the U.S. are under the control of local governments. The scope of the objective will require thousands of airports in rural and suburban areas to modify their infrastructure and increase their investment. Researchers at the University of Nebraska at Omaha (UNO), and others at other institutions, have prepared reports surveying the relevant issues of implementing SATS. Our UNO team focused on the issues of policy implementation, economic development, management, and finance specific to Nebraska. We are finding that these issues are similar to those in other states in our region and other rural states. This paper discusses how this investment might be financed.

  10. Living kidney donors and ESRD.

    PubMed

    Ross, Lainie Friedman

    2015-07-01

    There are more than 325 living kidney donors who have developed end-stage renal disease and have been listed on the Organ Procurement and Transplantation Network (OPTN)/United Network for Organ Sharing (UNOS) deceased donor kidney wait list. The OPTN/UNOS database records where these kidney donors are listed and, if they donated after April 1994, where that donation occurred. These 2 locations are often not the same. In this commentary, I examine whether a national living donor registry should be created and whether transplantation centers should be notified when one of their living kidney donors develops end-stage renal disease. I consider and refute 5 potential objections to center notification. I explain that transplantation centers should look back at these cases and input data into a registry to attempt to identify patterns that could improve donor evaluation protocols. Creating a registry and mining the information it contains is, in my view, our moral and professional responsibility to future patients and the transplantation endeavor. As individuals and as a community, we need to acknowledge the many unknown risks of living kidney donation and take responsibility for identifying these risks. We then must share information about these risks, educate prospective donors about them, and attempt to minimize them.

  11. Preventable errors in organ transplantation: an emerging patient safety issue?

    PubMed

    Ison, M G; Holl, J L; Ladner, D

    2012-09-01

    Several widely publicized errors in transplantation including a death due to ABO incompatibility, two HIV transmissions and two hepatitis C virus (HCV) transmissions have raised concerns about medical errors in organ transplantation. The root cause analysis of each of these events revealed preventable failures in the systems and processes of care as the underlying causes. In each event, no standardized system or redundant process was in place to mitigate the failures that led to the error. Additional system and process vulnerabilities such as poor clinician communication, erroneous data transcription and transmission were also identified. Organ transplantation, because it is highly complex, often stresses the systems and processes of care and, therefore, offers a unique opportunity to proactively identify vulnerabilities and potential failures. Initial steps have been taken to understand such issues through the OPTN/UNOS Operations and Safety Committee, the OPTN/UNOS Disease Transmission Advisory Committee (DTAC) and the current A2ALL ancillary Safety Study. However, to effectively improve patient safety in organ transplantation, the development of a process for reporting of preventable errors that affords protection and the support of empiric research is critical. Further, the transplant community needs to embrace the implementation of evidence-based system and process improvements that will mitigate existing safety vulnerabilities.

  12. Comportamiento Sexual y Autoeficacia para la Negociación de Sexo Más Seguro en Personas Heterosexuales

    PubMed Central

    Pérez-Jiménez, David; Santiago-Rivas, Marimer; Serrano-García, Irma

    2012-01-01

    La autoeficacia se le ha identificado como uno de los factores que puede facilitar o dificultar llevar a cabo sexo más seguro. Estudios revelan que las personas que están el relaciones estables usan métodos de protección menos frecuente que quienes tienen parejas casuales. Realizamos un estudio con 447 personas heterosexuales activas sexualmente. Les administramos un cuestionario dirigido a medir el comportamiento sexual, el uso del condón masculino y la práctica de la masturbación mutua, y la autoeficacia para llevar a cabo estas conductas. Los resultados reflejan que los hombres están más activos sexualmente y que el uso del condón y la práctica de la masturbación mutua como alternativa de sexo más seguro es muy baja. En los casos donde se usa el condón esta práctica es realizada en su mayoría por las personas que se encuentran en una relación de pareja casual. No obstante, los/las participantes tienen altos niveles de autoeficacia hacia ambas prácticas. Aunque la autoeficacia es uno de los factores que incide en decidir llevar a cabo sexo más seguro, ésta no es suficiente para que esta meta se logre. PMID:22837585

  13. [High-intensity chemotherapy versus palliative chemotherapy in patients over 60 years with acute myeloid leukemia].

    PubMed

    Medrano-Contreras, Jesús; Talavera-Piña, Juan Osvaldo; Guerrero-Rivera, Susana; Gutiérrez-Espíndola, Guillermo Rodolfo; Gómez-Cortés, Cynthia; Pérez-Rocha, Juan Fernando; Terreros-Muñoz, Eduardo; Meillón-García, Luis Antonio

    2016-01-01

    Introducción: el tratamiento con quimioterapia intensa (QTI) en pacientes con leucemia mieloblástica (LMA) mayores de 60 años es controversial. En el presente estudio se evaluó la remisión completa y la supervivencia global de pacientes con LMA mayores de 60 años, tratados con QTI o quimioterapia paliativa. Métodos: los pacientes con adecuada función orgánica y ECOG ≤ 2 recibieron QTI a base de citarabina por cinco o siete días más un antracíclico por tres días y terapia de soporte. En caso de lograr remisión completa de la leucemia recibieron uno o dos ciclos de consolidación con citarabina. El tratamiento paliativo consistió en medidas de soporte o quimioterapia oral o intravenosa en dosis bajas. Resultados: del grupo de QTI siete pacientes alcanzaron remisión completa, comparados con uno del grupo de quimioterapia paliativa. La supervivencia global fue de 13.25 meses para los pacientes con QTI y de 3.35 meses para los pacientes de quimioterapia paliativa (p < 0.05). Conclusión: es posible que los pacientes con LMA mayores de 60 años de edad se beneficien de recibir QTI, comparada con la quimioterapia paliativa.

  14. Space Radar Image of Glascow, Missouri

    NASA Technical Reports Server (NTRS)

    1994-01-01

    community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  15. Space Radar Image of Bebedauro, Brazil, seasonal

    NASA Technical Reports Server (NTRS)

    1994-01-01

    -C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V. (DLR), the major partner in science, operations and data processing of X-SAR.

  16. Space Radar Image of Missouri River, Glasgow, Missouri

    NASA Technical Reports Server (NTRS)

    1994-01-01

    ) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  17. DREAMS: a payload on-board the ExoMars EDM Schiaparelli for the characterization of Martian environment during the statistical dust storm season

    NASA Astrophysics Data System (ADS)

    Molfese, Cesare; Esposito, Francesca; Debei, Stefano; Bettanini, Carlo; Arruego Rodríguez, Ignacio; Colombatti, Giacomo; Harri, Ari-Matty.; Montmessin, Franck; Wilson, Colin; Aboudan, Alessio; Mugnuolo, Raffaele; Pirrotta, Simone; Marchetti, Ernesto; Witasse, Olivier

    2015-04-01

    F. Esposito1, S. Debei2, C. Bettanini2, C. Molfese1, I. Arruego Rodríguez3, G. Colombatti2, A-M. Harri4, F. Montmessin5, C. Wilson6, A. Aboudan2, S. Abbaki5, V. Apestigue3, G. Bellucci7, J-J. Berthelier5, J. R. Brucato8, S. B. Calcutt6, F. Cortecchia1, F. Cucciarrè2, G. Di Achille1, F. Ferri2, F. Forget9, E. Friso2, M. Genzer4, P. Gilbert5, H. Haukka4, J. J. Jiménez3, S. Jiménez10, J-L. Josset11, O. Karatekin12, G. Landis13, R. Lorenz14, J. Martinez3, L. Marty1, V. Mennella1, D. Möhlmann15, D. Moirin5, R. Molinaro1, E. Palomba7, M. Patel16, J-P. Pommereau5, C.I. Popa1, S. Rafkin17, P. Rannou18, N.O. Renno19, P. Schipani1, W. Schmidt4, E. Segato2, S. Silvestro1, F. Simoes20, A. Spiga9, F. Valero21, L. Vázquez21, F. Vivat5, O. Witasse22, R. Mugnuolo23, S. Pirrotta23, E.Marchetti23 1INAF - Osservatorio Astronomico di Capodimonte, Napoli, Italy, 2CISAS - Università degli Studi di Padova, Padova, Italy, 3INTA, Spain, 4Finnish Meteorological Institute (FMI),Helsinki, Finland, 5LATMOS - CNRS/UVSQ/IPSL, France, 6Oxford University, Oxford, United Kingdom, 7INAF - Istituto di Fisica dello Spazio Interplanetario (IFSI), 8INAF-Osservatorio Astrofisico di Arcetri, 9CNRS, LMD, France, 10Universidad Politécnica de Madrid, Spain, 11Space Exploration Institute, Switzerland, 12Royal Observatory of Belgium,Belgium, 13NASA, GRC, USA, 14JHU Applied Physics Lab (JHU-APL), USA, 15DLR PF Leitungsbereich, Berlin, Germany, 16Open University, UK, 17SwRL, Switzerland, 18GSMA, France, 19University of Michigan, USA, 20NASA, GSFC, USA, 21Universidad Complutense de Madrid (UCM), Spain, 22ESA-ESTEC, Noordwijk, The Netherlands, 23Italian Space Agency, Italy DREAMS (Dust characterization, Risk assessment and Environment Analyzer on the Martian Surface) package is an integrated multi-sensor scientific payload dedicated to characterizing the landing site environment in dusty conditions. It will measure pressure, wind speed and direction, relative humidity, temperature, the solar irradiance

  18. Water and methane maps overlap on Mars: a new clue?

    NASA Astrophysics Data System (ADS)

    2004-09-01

    is currently under peer review. Further studies will address whether these gases can be linked to water and methane and help answer the unresolved questions. In-situ observations by future lander missions to Mars may provide a more exhaustive solution to the puzzle. Note to editors The result is reported today, 20 September, by Dr Vittorio Formisano at the International Mars Conference (19-23 September), organised by the Italian Space Agency (ASI) in Ischia, Italy. The objective of the PFS instrument is the study, with unprecedented spectral resolution, of temperature fields in the atmosphere, dust, variation and cycle of water and carbon monoxide, vertical distribution of water, soil-atmosphere interactions and minor gaseous species. From this, hints of extant life can be extracted (in terms of the presence of ‘biomarker’ gases and chemical study of atmospheric environmental conditions). The PFS is an Italian Space Agency instrument, developed by the Istituto di Fisica dello Spazio Interplanetario (IFSI) of the Istituto Nazionale di Astrofisica (INAF), in the framework of ESA Mars Express mission.

  19. Space Radar Image of Manaus, Brazil

    NASA Technical Reports Server (NTRS)

    1994-01-01

    Estaciais, during the first and second flights of the SIR-C/X-SAR system have validated the interpretation of the radar images. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  20. Space Radar Image of Manaus region of Brazil

    NASA Technical Reports Server (NTRS)

    1994-01-01

    the first and second flights of the SIR-C/X-SAR system have validated the interpretation of the radar images. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  1. Space Radar Image of Karisoke & Virunga Volcanoes

    NASA Technical Reports Server (NTRS)

    1994-01-01

    vegetation maps of the area to aid in their studies of the last 650 mountain gorillas in the world. The faint lines above the bamboo forest are the result of agricultural terracing by the people who live in the region. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V. (DLR), the major partner in science, operations and data processing of X-SAR.

  2. Space Radar Image of Kliuchevskoi, Russia

    NASA Technical Reports Server (NTRS)

    1994-01-01

    mature in Kamchatka's 120-day growing season. The forest industry is managing these forests and practicing selective cutting to allow younger trees time to grow and reseed. X-SAR images will aid in mapping these deforested areas and in encouraging further recultivation efforts. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtange-legenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  3. National Workshop on Astrobiology: The Life Science Involvement of AAS I Laben

    NASA Astrophysics Data System (ADS)

    Adami, Giorgio

    2006-12-01

    The search for traces of past and present life is a complex and multidisciplinary research activity involving several scientific heritages and a specific industrial ability for planetary exploration. Laben was established in 1958 to design and manufacture electronic instruments for research in nuclear physics. In the mid 2004 the company was merged with Alenia Spazio. It is now part of Alcatel Alenia Space, a French Italian joint venture. Alcatel Alenia Space Italia SpA is a Finmeccanica Company. Currently the plant of Vimodrone provides a wide heritage in life science oriented to space application. The experience in Space Life Science is consolidated in the following research areas: (1) Physiology: Mouse models related to studies on human physiology Human neuroscience research and dosimetry (2) Animal Adaptation and Behaviour: mice behaviour related to stabling stress (3) Developmental Biology: aquatic microorganisms cultivation (4) Cell culture & Biotechnology: Protein crystal growth General purpose Multiwell Next Biotechnology studies and development: Bio reactor, mainly oriented to tissue engineering Microsensor for tissue control (organ replacement) Multiwell for adherent cell culture or

  4. Space Radar Image of Raco, Michigan, ecological test site

    NASA Technical Reports Server (NTRS)

    1994-01-01

    global changes resulting from climatic warming. Baseline studies of vegetation are essential in monitoring these expected changes. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  5. Space Radar Image of Altona, Manitoba, Canada

    NASA Technical Reports Server (NTRS)

    1994-01-01

    the magenta indicate differences in the degree of soil moisture change and differences in surface roughness. This seasonal composite demonstrates the sensitivity of radar to changes in agricultural surface conditions such as soil moisture, tillage, cropping and harvesting. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  6. Space Radar Image of North Sea, Germany

    NASA Technical Reports Server (NTRS)

    1994-01-01

    swiftly than is currently possible. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  7. Space Radar Image of Mammoth, California

    NASA Technical Reports Server (NTRS)

    1999-01-01

    environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI) with the Deutsche Forschungsanstalt fur Luft und Raumfahrt e.v. (DLR), the major partner in science, operation and data processing of X-SAR.

  8. Safsaf Oasis, Egypt

    NASA Technical Reports Server (NTRS)

    1998-01-01

    is C-band, horizontally transmitted and received; and blue is X-band, vertically transmitted and received. The radar image was acquired by the Spaceborne Imaging Radar-C/ X-band Synthetic Aperture Radar (SIR-C/X-SAR) on April 16, 1994, on board the space shuttle Endeavour. SIR-C/X-SAR, a joint mission of the German, Italian and United States space agencies, is part of NASA's Earth Science Enterprise. The Landsat Program is managed jointly by NASA, the National Oceanic and Atmospheric Administration and the United States Geological Survey.

    Spaceborne Imaging Radar-C and X-Band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations, and data processing of X-SAR.

  9. Space Radar Image of Prince Albert, Canada

    NASA Technical Reports Server (NTRS)

    1999-01-01

    -greenish areas are young jack pine trees, 3 to 5 meters (10 to 16 feet) in height and 11 to 16 years old. The green areas are due to the relative high intensity of the HV channel which is strongly correlated with the amount of biomass. L-band HV channel shows the biomass variations over the entire region. Most of the green areas, when compared to the forest cover maps are identified as black spruce trees. The dark blue and dark purple colors show recently harvested or regrowth areas respectively. SIR-C/X-SAR is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  10. Space Radar Image of Colombian Volcano

    NASA Technical Reports Server (NTRS)

    1999-01-01

    weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companiesfor the German space agency, Deutsche Agentur fuer Raumfahrtange-legenheiten (DARA), and the Italian space agency,Agenzia SpazialeItaliana (ASI), with the Deutsche Forschungsanstalt fuer Luft undRaumfahrt e.v.(DLR), the major partner in science,operations, and data processing of X-SAR.

  11. Space Radar Image of Oetzal, Austria

    NASA Technical Reports Server (NTRS)

    1994-01-01

    site is covered by glaciers. Corner reflectors are set up for calibration. Five corner reflectors can be seen on the Gepatschferner and two can be seen on the Vernagtferner. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  12. Space Radar Image of Death Valley, California

    NASA Technical Reports Server (NTRS)

    1999-01-01

    also one of the primary calibration sites for SIR-C/X-SAR. The bright dots near the center of the image are corner reflectors that have been set-up to calibrate the radar as the shuttle passes overhead. Thirty triangular-shaped reflectors (they look like aluminum pyramids) have been deployed by the calibration team from JPL over a 40- by 40-kilometer (25- by 25-mile) area in and around Death Valley. The calibration team will also deploy transponders (electronic reflectors) and receivers to measure the radar signals from SIR-C/X-SAR on the ground. SIR-C/X-SAR is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  13. SPace Radar Image of Mt. Pinatubo, Philippines

    NASA Technical Reports Server (NTRS)

    1999-01-01

    the next 10 to 15 years. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  14. Space Radar Image of Rabaul Volcano, New Guinea

    NASA Technical Reports Server (NTRS)

    1994-01-01

    the image. Ashfall and subsequent rains caused the collapse of most buildings in the town of Rabaul. Mudflows and flooding continue to pose serious threats to the town and surrounding villages. Volcanologists and local authorities expect to use data such as this radar image to assist them in identifying the mechanisms of the eruption and future hazardous conditions that may be associated with the vigorously active volcano. Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  15. Space Radar Image of Houston, Texas

    NASA Technical Reports Server (NTRS)

    1994-01-01

    -C/X-band Synthetic Aperture Radar(SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI) with the Deutsche Forschungsanstalt fuer luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  16. Analysis of the Thermo-Elastic Response of Space Reflectors to Simulated Space Environment

    NASA Astrophysics Data System (ADS)

    Allegri, G.; Ivagnes, M. M.; Marchetti, M.; Poscente, F.

    2002-01-01

    The evaluation of space environment effects on materials and structures is a key matter to develop a proper design of long duration missions: since a large part of satellites operating in the earth orbital environment are employed for telecommunications, the development of space antennas and reflectors featured by high dimensional stability versus space environment interactions represents a major challenge for designers. The structural layout of state of the art space antennas and reflectors is very complex, since several different sensible elements and materials are employed: particular care must be placed in evaluating the actual geometrical configuration of the reflectors operating in the space environment, since very limited distortions of the designed layout can produce severe effects on the quality of the signal both received and transmitted, especially for antennas operating at high frequencies. The effects of thermal loads due to direct sunlight exposition and to earth and moon albedo can be easily taken into account employing the standard methods of structural analysis: on the other hand the thermal cycling and the exposition to the vacuum environment produce a long term damage accumulation which affects the whole structure. The typical effects of the just mentioned exposition are the outgassing of polymeric materials and the contamination of the exposed surface, which can affect sensibly the thermo-mechanical properties of the materials themselves and, therefore, the structural global response. The main aim of the present paper is to evaluate the synergistic effects of thermal cycling and of the exposition to high vacuum environment on an innovative antenna developed by Alenia Spazio S.p.a.: to this purpose, both an experimental and numerical research activity has been developed. A complete prototype of the antenna has been exposed to the space environment simulated by the SAS facility: this latter is constituted by an high vacuum chamber, equipped by

  17. Space Radar Image of the Lost City of Ubar

    NASA Technical Reports Server (NTRS)

    1999-01-01

    Imaging Radar-C and X-Band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtange-legenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations, and data processing of X-SAR.

  18. Space Radar Image of Flevoland, Netherlands

    NASA Technical Reports Server (NTRS)

    1999-01-01

    used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrte.v. (DLR), the major partner in science, operations and data processing of X-SAR.

  19. Space Radar Image of Oberpfaffenhofen, Germany

    NASA Technical Reports Server (NTRS)

    1999-01-01

    -C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v. (DLR), the major partner in science, operations and data processing of X-SAR.

  20. Space Radar Image of Kiluchevskoi, Volcano, Russia

    NASA Technical Reports Server (NTRS)

    1994-01-01

    flanks of the volcano. Paths of these flows can be seen as thin lines in various shades of blue and green on the north flank in the center of the image. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  1. Space Radar Image of Weddell Sea Ice

    NASA Technical Reports Server (NTRS)

    1994-01-01

    -ice growth perhaps 5 to 10 centimeters (2 to 4 inches) thick. The more extensive dark zones are covered by a slightly thicker layer of smooth, level ice up to 70 centimeters (28 inches) thick. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations, and data processing of X-SAR.

  2. Space Radar Image of Mississippi Delta

    NASA Technical Reports Server (NTRS)

    1999-01-01

    illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations, and data processing of X-SAR.

  3. Space Radar Image of Mammoth Mountain, California

    NASA Technical Reports Server (NTRS)

    1994-01-01

    observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm), and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes that are caused by nature and those changes that are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science operations and data processing of X-SAR.

  4. Space Radar Image of Moscow, Russia

    NASA Technical Reports Server (NTRS)

    1994-01-01

    community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  5. Space Radar Image of Taal Volcano, Philippines

    NASA Technical Reports Server (NTRS)

    1994-01-01

    with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  6. Space Radar Image of Patagonian Ice Fields

    NASA Technical Reports Server (NTRS)

    1994-01-01

    , a direct indication of the steep meteorological gradients known to exist in this region. The bluer color of the outlet glaciers is probably due to a thin snow cover. A portion of the terminus of the outlet glacier at the top left center of the images has advanced approximately 600 meters (1,970 feet) in the five-and-a-half months between the two missions. Because of the persistent cloud cover this observation was only possible by using the orbiting, remote imaging radar system. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  7. Space Radar Image of Kliuchevskoi Volcano, Russia

    NASA Technical Reports Server (NTRS)

    1994-01-01

    illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrte.v. (DLR), the major partner in science, operations and data processing of X-SAR.

  8. Space Radar Image of West Texas - SAR scan

    NASA Technical Reports Server (NTRS)

    1999-01-01

    forthcoming Canadian RADARSAT satellite. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations, and data processing of X-SAR.

  9. Space Radar Image of Los Angeles, California

    NASA Technical Reports Server (NTRS)

    1994-01-01

    -C/X-SAR, scientists will be able to discern these areas even more clearly. Space Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: the L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  10. Roter Kamm Impact Crater in Namibia

    NASA Technical Reports Server (NTRS)

    1995-01-01

    the surface of the Earth help geologists understand the role of the impact process in the Earth's evolution, including effects on the atmosphere and on biological evolution.

    Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  11. Europlanet Integrated and Distributed Information Service

    NASA Astrophysics Data System (ADS)

    Schmidt, W.; Capria, M. T.; Chanteur, G.

    2009-04-01

    integrated search facilities, compatible structures and a common management. Each of these nodes concentrates on a special field of planetary sciences, has its own team of related international experts and is responsible for the access to information and data centres related to its area of competence. Integrated keyword-based search-possibilities direct inquiries to those node(s), most likely to return the wanted information. These nodes are hosted by the following organizations: - The Finnish Meteorological Institute (FMI) in Helsinki, Finland, hosts the Technical Node for a wide range of support activities and provides the network management. - The Institute of Planetary Research (IPR) of DLR in Berlin, Germany, hosts the Planetary Surfaces and Interiors Node, concentrating on internal structure, formation and evolution of the planets, their moons, asteroids and comets. - The Institut für Weltraumforschung, IWF (Space Research Institute) of the Austrian Academy of Sciences (OeAW) in Graz hosts the Planetary Plasma Node in close cooperation with the French space plasma data center CDPP in Toulouse. - The Institut Pierre-Simon Laplace in Paris hosts the Planetary Atmospheres Node. - The Paris Observatory hosts the Virtual Observatory Paris Data Center providing among others access to a wide range of atomic and molecular spectral databases. - The Istituto di Fisica dello Spazio Interplanetario (IFSI) in Rome hosts the Small Bodies and Dust Node, in cooperation with the ESA/ESTECs Virtual Meteor Observatory in Noordwijk, The Netherlands, concentrating on research and observations related to solar system asteroids, comets, meteors and interplanetary dust. During the next four years a set of tools for describing, accessing and combining information and data from different sources will be developed, offering finally a Virtual Observatory like access to many data essential for planetary research from European and None-European sources. Web access via any of the mentioned nodes, e

  12. Space Radar Image of Kilauea Volcano, Hawaii

    NASA Technical Reports Server (NTRS)

    1994-01-01

    radar missions to help in better understanding the processes responsible for volcanic eruptions and earthquakes. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  13. Space Radar Image of the Silk route in Niya, Taklamak, China

    NASA Technical Reports Server (NTRS)

    1999-01-01

    -C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: the L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  14. Space Radar Image of Mammoth, California

    NASA Technical Reports Server (NTRS)

    1999-01-01

    . The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v. (DLR), the major partner in science, operations and data processing of X-SAR.

  15. Status and Perspectives of Electric Propulsion in Italy

    NASA Astrophysics Data System (ADS)

    Svelto, F.; Marcuccio, S.; Matticari, G.

    2002-01-01

    International Space Station to work as a long-duration testbed for EP systems. ASI co-funds the development of a very large testing facility (5.7 m internal diameter) for high power EP testing up to 50 kW. Proel Tecnologie is a Hi-Tech Organization established in 1986, operating in the field of electron (EGA for the TSS- 1and TSS-1R missions), ion and plasma sources for space applications. The Company, become a Division of LABEN S.p.A. (FINMECCANICA Company co-ordinated by Alenia Spazio) since 1995, has identified in the EP the main strategic development line. LABEN/Proel activities include the development of an Ion Thruster in the millinewton range (RMT, ASI technology contract), cathodes/neutralizers for EP in the 0,2-5 kW power range, in- flight diagnostics of EP sub-systems (ARTEMIS, STENTOR, SMART-1), xenon feedlines and flow control units, plasma contactors for the electrostatic charge control on spacecrafts (PLEGPAY experiment on the ISS) and support technologies/facilities for the manufacturing of Hall Thrusters and propellant tanks (the latter by using an advanced process for composite materials polymerization through electron beam irradiation). ASI considers EP development as a National priority and various technology activities are under evaluation. In this context, the Agency is playing a continued role in the process of exploitation of Italian experience and capability and in harmonisation with European efforts in the field.

  16. Space Radar Image of Oetzal, Austria

    NASA Technical Reports Server (NTRS)

    1999-01-01

    microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  17. Space Radar Image of Chernobyl

    NASA Technical Reports Server (NTRS)

    1994-01-01

    conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  18. Space Radar Image of the Yucatan Impact Crater Site

    NASA Technical Reports Server (NTRS)

    1999-01-01

    to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtange-legenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations, and data processing of X-SAR. Research on the biological effects of the Chicxulub impact is supported by the NASA Exobiology Program.

  19. A Conceptual Design for a Small Deployer Satellite

    NASA Astrophysics Data System (ADS)

    Zumbo, S.

    2002-01-01

    In the last few years, the space scientific and industrial communities have demonstrated a renewed interest for small missions based on new categories of space platforms: micro &nano satellites. The cost reduction w.r.t. larger satellite missions, the shorter time from concept to launch, the risk distribution and the possibility to use this kind of bus both for stand-alone projects and as complementary to larger programs, are key factors that make this new kind of technology suitable for a wide range of space related activities. In particular it is now possible to conceive new mission philosophy implying the realisation of micro satellite constellations, with S/C flying in close formation to form a network of distributed sensors either for near-real time telecommunication or Earth remote sensing and disaster monitoring systems or physics and astronomical researches for Earth-Sun dynamics and high energy radiation studies. At the same time micro satellite are becoming important test- beds for new technologies that will eventually be used on larger missions, with relevant spin-offs potentialities towards other industrial fields. The foreseen social and economical direct benefits, the reduced mission costs and the possibility even for a small skilled team to manage all the project, represent very attractive arguments for universities and research institutes to invest funds and human resources to get first order technical and theoretical skills in the field of micro satellite design, with important influences on the training programs of motivated students that are directly involved in all the project's phases. In consideration of these space market important new trends and of the academic benefits that could be guaranteed by undertaking a micro satellite mission project, basing on its long space activities heritage, University of Rome "La Sapienza" - Aerospace and Astronautics Department, with the support of the Italian Space Agency, Alenia Spazio and of important

  20. Creating Interdisciplinary STEM Environments at the University of Nebraska at Omaha

    NASA Astrophysics Data System (ADS)

    Shuster, R. D.; Grandgenett, N. F.

    2010-12-01

    Effective, integrated and interdisciplinary STEM environments depend upon strong faculty collaboration. During the past decade, the University of Nebraska at Omaha (UNO) has put an emphasis on STEM faculty working together across departments, colleges, and the university system, as well as with local school systems. Supported by a University-wide Content and Pedagogy Committee and a new Office of STEM Education, faculty members have aggressively undertaken and evaluated various interdisciplinary STEM activities. This presentation will briefly describe three of these projects, including evaluation-related data and UNO support mechanisms. First, an interdisciplinary student research project has been developed involving our introductory geology and chemistry courses. The project includes collecting drinking water samples from around Omaha by geology students, the chemical analysis of drinking water by chemistry students, followed by water quality analysis of the chemical data by the geology students. Students learn about the scientific method, potential problems with project design, and limitations of interpretation of real data, while also applying knowledge learned in the class to this real world problem. This project reaches ~600 undergraduate students each year and requires close cooperation between faculty of the Chemistry and Geology programs. Evaluation data indicates that this project has had a positive impact on student attitude towards science in general and towards geology and chemistry in particular. The second project highlighted will be the Silicon Prairie Initiative for Robotics in Information Technology (SPIRIT). The SPIRIT project is a NSF funded collaboration between the UNO College of Education, the University of Nebraska at Lincoln College of Engineering, and local school systems. It strives to integrate the use of educational robotics and sensors in the teaching of STEM topics, particularly at the middle school and high school levels. The project

  1. Nonlinear Propagation of Mag Waves Through the Transition Region

    NASA Astrophysics Data System (ADS)

    Jatenco-Pereira, V.; Steinolfson, R. S.; Mahajan, S.; Tajima, T.

    1990-11-01

    RESUMEN. Una onda de gravitaci5n magneto acustica (GMA), se inicia en el regimen de alta beta cerca de la basa de fot5sfera solar y es segui- da, usando simulaciones numericas, mientras viaja radialmente a traves de la cromosfera, la regi5n de transici6n y dentro de la corona. Se ha' seleccionado parametros iniciales de manera que la beta resulte menor que uno cerca de la parte alta de la regi6n de transici6n. Nuestro interes maximo se concentra en la cantidad y forma del flujo de energia que puede ser llevada por la onda hasta la corona dados una atm6sfera inicial y amplitud de onda especificas. Segun los estudios a la fecha, el flujo de energ1a termico domina, aumentando linealmente con la ampli tud deonda y resulta de aproximadamente i05 ergs/cm2-s en una amplitud de 0.5. El flujo de energia cinetica siempre permanece despreciable, mientras que el flujo de energia magnetica depende de la orientaci5n inicial del campo. Un modo GMA rapido y casi paralelo, el cual es esen- cialmente un modo MHD en la corona se convierte a un modo rapido modificado y a uno lento, cuando la beta atmosferica disminuye a uno. ABSTRACT: A magneto-acoustic-gravity (MAG) wave is initiated in the high-beta regime near the base of the solar photosphere and followed, using numerical siriiulations, as it travels radially through the chromosphere, the transition region, and into the corona. Initial parameters are selected such that beta becomes less than one near the top of the transition region. Our primary interest is in the amount and form of energy flux that can be carried by the wave train into the corona for a specified initial atmosphere and wave amplitude. For the studies conducted to date, the thermal energy flux dominates, it about linearly with wave amplitude and becomes approximately 10 ergs/cm2-s at an amplitude of 0.5. The kinetic energy flux always remains negligible, while the magnetic energy flux depends on the inLtial field orientation. A nearly parallel fast MAG mode, which

  2. [Update of the stability of drugs cytostatic drugs by applying the methodology of the matrix of risk for the manufacture of sterile drugs].

    PubMed

    Usarralde-Pérez, Ángela; Toro-Chico, Piedad; Pérez-Encinas, Montserrat

    2016-06-01

    Objetivo: Establecer unos plazos de validez de los viales abiertos y/o reconstituidos y de las mezclas citostáticas según su estabilidad fisicoquímica, el nivel de riesgo y los requisitos de preparación asignados por la matriz de riesgo de la Guía de Buenas Prácticas de Preparación de Medicamentos en los Servicios de Farmacia Hospitalaria. Método: Se elaboró una tabla de estabilidades con los medicamentos citostáticos. Los datos de estabilidad fisicoquímica se obtuvieron de fichas técnicas y revisiones bibliográficas. El nivel de riesgo fue asignado por la matriz de riesgo en función de los requisitos de cada preparación. Cuando la estabilidad fisicoquímica era igual o superior a la indicada por la matriz, se asumieron los plazos de validez de la matriz; en caso contrario, los plazos de validez coincidieron con el periodo máximo de estabilidad fisicoquímica. Resultados: Se revisaron 61 fármacos. Se asumió el plazo de validez físico-química en el 45,9% de los viales abiertos/ reconstituidos y en el 50,8% de las mezclas citostáticas, y el indicado por la matriz de riesgo en el resto, respectivamente. Según la matriz, el nivel de riesgo fue medio en todos los medicamentos citostáticos salvo en uno, que resultó de riesgo alto. Ningún medicamento resultó de riesgo bajo. Conclusiones: Para asignar el plazo de validez de los viales abiertos/reconstituidos y de las mezclas citostáticas no solo es necesario tener en cuenta los datos de estabilidad físico-química, sino también el nivel de riesgo y los requisitos de preparación, permitiendo unos plazos de validez más adecuados.

  3. An Evaluation of the Usefulness of Extracorporeal Liver Support Techniques in Patients Hospitalized in the ICU for Severe Liver Dysfunction Secondary to Alcoholic Liver Disease

    PubMed Central

    Piechota, Mariusz; Piechota, Anna

    2016-01-01

    Background The mortality rate in patients with severe liver dysfunction secondary to alcoholic liver disease (ALD) who do not respond to the standard treatment is exceptionally high. Objectives The main aim of this study was to evaluate the usefulness of applying extracorporeal liver support techniques to treat this group of patients. Patients and Methods The data from 23 hospital admissions of 21 patients with ALD who were admitted to the department of anesthesiology and intensive therapy (A&IT) at the Dr Wł. Biegański Regional Specialist Hospital in Łódź between March 2013 and July 2015 were retrospectively analyzed. Results A total of 111 liver dialysis procedures were performed during the 23 hospitalizations, including 13 dialyses using fractionated plasma separation and adsorption (FPSA) with the Prometheus® system, and 98 procedures using the single pass albumin dialysis (SPAD) system. Upon admission to the intensive care unit (ICU), the median (interquartile range [IQR]) Glasgow coma scale (GCS), sequential organ failure assessment (SOFA), acute physiology and chronic health evaluation (APACHE) II, and simplified acute physiology score (SAPS) II scores were 15 (14 - 15), 9 (7 - 13), 17 (14 - 24), and 32 (22 - 50), respectively. The ICU, 30-day, and three-month mortality rates were 43.48%, 39.13%, and 73.91%, respectively. As determined by the receiver operative characteristic (ROC) analysis for single-factor models, the significant predictors of death in the ICU included the patients’ SOFA, APACHE II, SAPS II, and model of end-stage liver disease modified by the united network for organ sharing (MELD UNOS Modification) scores; the duration of stay (in days) in the A&IT Department; and bile acid, creatinine and albumin levels upon ICU admission. The ROC analysis indicated the significant discriminating power of the SOFA, APACHE II, SAPS II, and MELD UNOS modification scores on the three-month mortality rate. Conclusions The application of

  4. Assessing Stream Ecosystem Metabolism and Nitrate Utilization at Reduced Nitrate Levels Using a Chamber-Based Approach: Looking Below, Scaling Up, and Thinking Inside the Box

    NASA Astrophysics Data System (ADS)

    Reijo, C. J.; Cohen, M. J.

    2014-12-01

    As nitrate levels in lotic systems have increased, nutrient reduction strategies have become the centerpiece of water quality standards to protect and restore stream ecosystems. While reducing anthropogenic nitrate (NO3) loads has many positive effects, we lack a fundamental understanding of how lotic systems respond to changing concentrations and no methods exist to characterize nutrient uptake behavior below ambient levels. Therefore, it is difficult to predict whether nutrient reductions will meet management goals. To fill this knowledge gap, we developed a chamber-based method which allows characterization of NO3 utilization along the two major uptake pathways at reduced NO3 levels. The chamber blocks flow by insertion into upper sediments but allows light in and sediment-water-air interactions to occur. At Gum Slough Springs, Florida, high-resolution in-situ sensors measured water quality while NO3 reduced from ambient levels (1.40 mg N/L) to below regulatory thresholds (ca. 0.20 mg N/L) within one week. Daytime NO3 uptake, resulting from both plant uptake and denitrification, was consistently greater than nighttime uptake, which is denitrification alone. Using this method, we compared NO3 uptake rates (UNO3) and gross primary production (GPP) across three vegetative regimes (i.e. submerged aquatic vegetation (SAV), SAV with epiphytic algae, and algae alone) and related GPP estimates from the chamber to reach scale. Results showed that UNO3 and GPP were greatest in SAV, GPP was negatively correlated to [NO3] in algae, denitrification rates did not vary by vegetation type, and chamber GPP (e.g. 6-8 g O2/m2/day in SAV) was comparable to reach-scale estimates (6-12 g O2/m2/day). Our results suggest UNO3 and GPP differ by vegetation regimes, GPP scales from chamber to reach level, algal presence potentially reduces GPP, and a lack of nutrient limitation even at low [NO3]. Current work includes replicating measurements across systems as well as refining the

  5. [Not Available].

    PubMed

    Molina Villaverde, Raquel

    2016-01-01

    El cáncer es un problema sanitario de primera magnitud a escala mundial. Su tratamiento es uno de los mayores campos de innovación y desarrollo en medicina. La visión del cáncer como una enfermedad sistémica, heterogénea y de una elevada complejidad hace que los enfermos deban recibir una atención oncológica de calidad, proporcionada por equipos multidisciplinares altamente cualificados. Además de la gran incidencia de malnutrición en estos pacientes, la intervención nutricional precoz puede mejorar su pronóstico, aumentar la calidad de vida y disminuir la tasa de complicaciones de la enfermedad. Por ello, es necesaria una estrecha colaboración entre el oncólogo y el experto en nutrición. PMID:27269214

  6. PubMed

    Barrantes-Monge, Melba; Rodríguez, Eduardo; Lama, Alexis

    2009-01-01

    Existen prejuicios en relación con la vejez, incluso entre los profesionales que se dedican a la gerontología. Uno común y peligroso es considerar que los viejos son todos enfermos o discapacitados.La relación médico-paciente es la piedra angular de la práctica y ética médicas. Para alcanzar el respeto por los adultos mayores es necesaria una medicina prudente, basada en una práctica en la cual la reflexión ética y clínica pueda contribuir. Esto último es posible si se hacen valer los derechos del adulto mayor, en particular como paciente para la toma de decisiones.

  7. [Temperature Measurement with Bluetooth under Android Platform].

    PubMed

    Wang, Shuai; Shen, Hao; Luo, Changze

    2015-03-01

    To realize the real-time transmission of temperature data and display using the platform of intelligent mobile phone and bluetooth. Application of Arduino Uno R3 in temperature data acquisition of digital temperature sensor DS18B20 acquisition, through the HC-05 bluetooth transmits the data to the intelligent smart phone Android system, realizes transmission of temperature data. Using Java language to write applications program under Android development environment, can achieve real-time temperature data display, storage and drawing temperature fluctuations drawn graphics. Temperature sensor is experimentally tested to meet the body temperature measurement precision and accuracy. This paper can provide a reference for other smart phone mobile medical product development. PMID:26524781

  8. Competencias en ética biocéntrica

    PubMed Central

    Stepke, Fernando Lolas

    2013-01-01

    Resumen Este artículo explora el origen y la conceptualización de la bioética en tanto ética biocéntrica, definida por el pionero Fritz Jahr como un imperativo hipotético que llama a respetar la vida en todas sus formas. Tras describirla como proceso social, procedimiento técnico y producto académico, se enumeran y comentan algunas competencias que debieran presidir el empleo del discurso bioético en cualquier punto del complejo social “investigación médica”: miembros de comités de ética de investigación, investigadores, empresarios, administradores. Cada uno de estos grupos, en su “cultura epistémica” propia, define y explicita los principios básicos en tanto expresión de valores y leyes generales. PMID:23459767

  9. Measuring the RC time constant with Arduino

    NASA Astrophysics Data System (ADS)

    Pereira, N. S. A.

    2016-11-01

    In this work we use the Arduino UNO R3 open source hardware platform to assemble an experimental apparatus for the measurement of the time constant of an RC circuit. With adequate programming, the Arduino is used as a signal generator, a data acquisition system and a basic signal visualisation tool. Theoretical calculations are compared with direct observations from an analogue oscilloscope. Data processing and curve fitting is performed on a spreadsheet. The results obtained for the six RC test circuits are within the expected interval of values defined by the tolerance of the components. The hardware and software prove to be adequate to the proposed measurements and therefore adaptable to a laboratorial teaching and learning context.

  10. [Competence in biocentric ethics.

    PubMed

    Stepke, Fernando Lolas

    2012-07-01

    ResumenEste artículo explora el origen y la conceptualización de la bioética en tanto ética biocéntrica, definida por el pionero Fritz Jahr como un imperativo hipotético que llama a respetar la vida en todas sus formas. Tras describirla como proceso social, procedimiento técnico y producto académico, se enumeran y comentan algunas competencias que debieran presidir el empleo del discurso bioético en cualquier punto del complejo social "investigación médica": miembros de comités de ética de investigación, investigadores, empresarios, administradores. Cada uno de estos grupos, en su "cultura epistémica" propia, define y explicita los principios básicos en tanto expresión de valores y leyes generales.

  11. Nuclear mass formula with the shell energies obtained by a new method

    SciTech Connect

    Koura, H.; Tachibana, T.; Yamada, M.; Uno, M.

    1998-12-21

    Nuclear shapes and masses are estimated by a new method. The main feature of this method lies in estimating shell energies of deformed nuclei from spherical shell energies by mixing them with appropriate weights. The spherical shell energies are calculated from single-particle potentials, and, till now, two mass formulas have been constructed from two different sets of potential parameters. The standard deviation of the calculated masses from all the experimental masses of the 1995 Mass Evaluation is about 760 keV. Contrary to the mass formula by Tachibana, Uno, Yamada and Yamada in the 1987-1988 Atomic Mass Predictions, the present formulas can give nuclear shapes and predict on super-heavy elements.

  12. 1986-87 atomic mass predictions

    SciTech Connect

    Haustein, P.E.

    1987-12-10

    A project to perform a comprehensive update of the atomic mass predictions has recently been concluded and will be published shortly in Atomic Data and Nuclear Data Tables. The project evolved from an ongoing comparison between available mass predictions and reports of newly measured masses of isotopes throughout the mass surface. These comparisons have highlighted a variety of features in current mass models which are responsible for predictions that diverge from masses determined experimentally. The need for a comprehensive update of the atomic mass predictions was therefore apparent and the project was organized and began at the last mass conference (AMCO-VII). Project participants included: Pape and Anthony; Dussel, Caurier and Zuker; Moeller and Nix; Moeller, Myers, Swiatecki and Treiner; Comay, Kelson, and Zidon; Satpathy and Nayak; Tachibana, Uno, Yamada and Yamada; Spanier and Johansson; Jaenecke and Masson; and Wapstra, Audi and Hoekstra. An overview of the new atomic mass predictions may be obtained by written request.

  13. The Conference Proceedings of the 1997 Air Transport Research Group (ATRG) of the WCTR Society. Volume 1

    NASA Technical Reports Server (NTRS)

    Own, Tae Hoon (Editor); Bowen, Brent D. (Editor)

    1997-01-01

    The Aviation Institute University of Nebraska at Omaha (UNO) Monograph series has published the Conference Proceedings of the 1997 Air Transport Research Group (ATRG) of the World Conference on Transportation Research Society (WCTR) volume 1, number 3. The topics included in this document are: 1) Industrial Reform and Air Transport Development in China; 2) The Economic Effects of Airline Deregulation and the Open-Sky Policy of Korea; 3) The Economic Effects of Airline Deregulation and the Open-Sky Policy of Korea; 4) "Open Skies" in India-Is the policy succeeding? 5) The Japanese Domestic Air Fares under the Regulatory Regime: What will be expected after the revision of current charging system? 6) The Competitive Position of Airline Networks; and 7) Air Transport and Regional Economic Development in the European Union.

  14. First Principles Study of a-U2N3 Surfaces and its Anti-oxidant Mechanism

    NASA Astrophysics Data System (ADS)

    Jin, Mengting; Zhang, Yanning

    With the advantages over oxides as fuel materials for fast nuclear reactors, actinide nitrides have been extensively studied in experiments. In particular, a-U2N3 is also the main composition of surface layer obtained by surface nitriding for the enhancement of oxidation resistance of uranium in ambient conditions.[1-4] However, the anti-oxidant mechanism behind is still unclear, which hinders the further development of surface treatment technologies for uranium. Here we perform extensive ab initio studies on the geometric, magnetic and electronic properties of a-U2N3 bulk and (001) surfaces. Then the adsorption and diffusion of O2 near the stable a-U2N3(001) surface will be discussed, focusing on the local atomic arrangements of U-N and U-N-O that cannot be observed easily in experiments. Our theoretical results may give some insights in understanding the anti-oxidant mechanism of surface nitriding.

  15. Manual del espectrógrafo multifunción de Bosque Alegre

    NASA Astrophysics Data System (ADS)

    Díaz, R.; Paolantonio, S.; Carranza, G.; Goldes, G.

    Este manual consta de 120 páginas y resume las características del Espectrógrafo Multifunción instalado en el telescopio de 1.54 m de la Estación Astrofísica de Bosque Alegre. En este trabajo se describen, además, las técnicas a emplear para su puesta a punto y la secuencia de operaciones para la obtención de datos en cada uno de los modos que ya se encuentran en funcionamiento. Parte de este trabajo se realizó con el apoyo de la Asociación Argentina de Astronomía, a través de becas otorgadas a R.D. y S.P..

  16. IL TRAPIANTO ORTOTOPICO DEL FEGATO

    PubMed Central

    STARZL, THOMAS E.

    2010-01-01

    E’ormai noto che esiste la possibilità rivoluzionaria di utilizzare il fegato per il trattamento della stadio terminale delle epatopatie. Nel gennaio 1980 si celebra il decimo anna di sopravvivenza con fegato trapiantato (la più lunga della letteratura) di un paziente da noi trattato. Si tratta di uno dei 12 malati sottoposti a trapianto e seguiti per più di 5 anni. La nota positiva di questa tipo di trattamento è rappresentata dall’eccellente tenore di vita che i pazienti conducono e dalla riabilitazione sociale e professionale. La nota negativa è data, invece, dal fatto che i buoni risultati non vengono raggiunti con regolarità e non possono essere previsti con esattezza. In questa breve rassegna considereremo la esperienza da noi fatta presso l’Università di Denver nel Colorado, mettendo in risalto le cause dell’elevata mortalità precoce e le prospettive future di questa mezzo terapeutico. PMID:21572898

  17. H3+: superficies de energía potencial, estados y transiciones rovibracionales

    NASA Astrophysics Data System (ADS)

    Aguado, M. Paniagua Y. A.

    Hemos calculado varias superficies globales de energía potencial para el estado fundamental y excitados del sistema H3+ en más de ocho mil geometrías diferentes usando una base (9s 3p 1d)/[4s 3p 1d] en cada átomo de Hidrógeno y mediante un método de cálculo de interacción de configuraciones completa (FCI). Hemos ajustado las superficies a formas analíticas del tipo Aguado y Paniagua con un error promedio menor de 50 cm-1 y menor en el pozo de potencial del estado fundamental. Finalmente hemos calculado y analizado los niveles vibracionales para los dos estados electrónicos más bajos, siendo la desviación respecto de los mejores valores publicados, tanto experimentales como teóricos, de unos pocos números de onda.

  18. Using satellite images to monitor glacial-lake outburst floods: Lago Cachet Dos drainage, Chile

    USGS Publications Warehouse

    Friesen, Beverly A.; Cole, Christopher J.; Nimick, David A.; Wilson, Earl M.; Fahey, Mark J.; McGrath, Daniel J.; Leidich, Jonathan

    2015-01-01

    During 2008–2013, 14 GLOFs were released from Lago Cachet Dos and created environmental and safety concerns for downstream residents and to infrastructure. If GLOFs and the consequent headward erosion continue, the moraine that creates Lago Cachet Uno could be destabilized and breached, and the two lakes could merge. If the two lakes become connected, the volume of future GLOFs likely would be greater and thus cause longer and (or) more extensive flooding downstream. Additional GLOFs from Lago Cachet Dos are expected in the future, and continued environmental monitoring could provide an early warning system as well as scientific information that could increase our understanding of GLOFs and their consequences. GLOFs occur in glaciated areas around the world and remote sensing technologies can allow researchers to better understand—and potentially predict—future GLOF events.

  19. RELACIÓN MÉDICO PACIENTE: DERECHOS DEL ADULTO MAYOR

    PubMed Central

    Barrantes-Monge, Melba; Rodríguez, Eduardo; Lama, Alexis

    2009-01-01

    Existen prejuicios en relación con la vejez, incluso entre los profesionales que se dedican a la gerontología. Uno común y peligroso es considerar que los viejos son todos enfermos o discapacitados. La relación médico-paciente es la piedra angular de la práctica y ética médicas. Para alcanzar el respeto por los adultos mayores es necesaria una medicina prudente, basada en una práctica en la cual la reflexión ética y clínica pueda contribuir. Esto último es posible si se hacen valer los derechos del adulto mayor, en particular como paciente para la toma de decisiones. PMID:20379380

  20. Deep burn of hand and forearm treated by abdominal wall flap. A case report.

    PubMed

    Chiummariello, Stefano; Del Torto, Giuseppe; Maffia, Romano; Pataia, Elisabetta; Alfano, Carmine

    2015-06-24

    Le ustioni della mano sono sempre state uno dei maggiori problemi per i chirurghi ricostruttori a causa della sua particolare anatomia e delle sue complesse funzioni. Una guarigione spontanea di lesioni profonde in queste aree può portare a risultati catastrofici: una copertura cutanea adeguata è fondamentale per tutte le funzioni. La copertura precoce dei tessuti molli residuanti è fondamentale al fine di evitare la formazione di contratture disabilitanti che con il tempo potrebbero determinare anchilosi articolare e retrazione tendinea. Escissione precoce e innesti cutanei rappresentano la terapia standard per le ustioni della mano; in alcuni casi quest’approccio è inapplicabile e, pertanto, il ricorso ai lembi diventa inevitabile. In questo articolo riportiamo un caso di ustione complessa del dorso della mano trattata in prima istanza con innesti cutanei e, quindi, con un lembo addominale, riuscendo ad ottenere un’ottima copertura ed un buon recupero delle funzioni.

  1. [Nosocomial infections. Trends over a 12 year-period in a pediatric hospital].

    PubMed

    Zamudio-Lugo, Irma; Espinosa-Vital, Guadalupe Judith; Rodríguez-Sing, Roberta; Gómez-González, Claudia Josefina; Miranda-Novales, María Guadalupe

    2014-01-01

    INTRODUCCIÓN: las infecciones nosocomiales constituyen uno de los principales problemas de salud en los hospitales, por ello, los programas de prevención y control deben ser evaluados con el impacto en las tasas de incidencia. El objetivo de esta investigación fue identificar la tendencia de las infecciones nosocomiales durante un periodo de 12 años en un hospital pediátrico de tercer nivel. MÉTODOS: se llevó a cabo un estudio de cohorte retrospectivo en el que se incluyeron todos los pacientes hospitalizados que presentaron infecciones nosocomiales. El análisis estadístico de los datos incluyó frecuencias simples, proporciones y densidad de incidencia por año, sitio de infección y letalidad.

  2. Impact of the consumption of a rich diet in butter and it replacement for a rich diet in extra virgin olive oil on anthropometric, metabolic and lipid profile in postmenopausal women.

    PubMed

    Anderson-Vasquez, Hazel Ester; Pérez-Martínez, Pablo; Ortega Fernández, Pablo; Wanden-Berghe, Carmina

    2015-06-01

    Objetivo: analizar el impacto de la sustitución de una dieta rica en grasas saturadas por una dieta rica en grasas monoinsaturadas sobre el perfil antropométrico, metabólico y lipídico en mujeres postmenopáusicas. Material y método: estudio prospectivo, longitudinal y comparativo en el que 18 mujeres postmenopáusicas participaron en dos períodos de intervención dietética de 28 días cada uno: 1) (dieta SAT) consumieron mantequilla. Fórmula calórica (FC) = 15% de proteínas, 38% grasas. [20% grasas saturadas (AGS), 12% grasas monoinsaturadas (AGM) y 47% carbohidratos y 6% poliinsaturadas (AGPI)]. 2) Periodo MONO: con aceite de oliva virgen extra (AOVE). Fórmula calórica = 15% de proteínas, 38% grasas (.

  3. Proyecto para la medición sistemática de seeing en CASLEO

    NASA Astrophysics Data System (ADS)

    Fernández Lajus, E.; Forte, J. C.

    La calidad del seeing astronómico es ciertamente uno de los parámetros mas importantes que caracterizan el sitio de un observatorio. Por tanto se desea determinar si el alto valor de seeing observado con el telescopio de 2.15 m se debe a efectos internos y/o del entorno a la cupula o si se debe simplemente al seeing propio del lugar. El actual mecanismo de refrigeración del espejo primario del 2.15, parece haber mejorado notablemente la calidad del seeing. Sin embargo se hace necesario saber hasta que punto el valor del seeing puede ser mejorado. La primera etapa del proyecto consistió en la puesta a punto del telescopio emplazado para este propósito y la adquisición de las primeras medidas tentativas de seeing.

  4. PubMed

    Barrantes-Monge, Melba; Rodríguez, Eduardo; Lama, Alexis

    2009-01-01

    Existen prejuicios en relación con la vejez, incluso entre los profesionales que se dedican a la gerontología. Uno común y peligroso es considerar que los viejos son todos enfermos o discapacitados.La relación médico-paciente es la piedra angular de la práctica y ética médicas. Para alcanzar el respeto por los adultos mayores es necesaria una medicina prudente, basada en una práctica en la cual la reflexión ética y clínica pueda contribuir. Esto último es posible si se hacen valer los derechos del adulto mayor, en particular como paciente para la toma de decisiones. PMID:20379380

  5. [Temperature Measurement with Bluetooth under Android Platform].

    PubMed

    Wang, Shuai; Shen, Hao; Luo, Changze

    2015-03-01

    To realize the real-time transmission of temperature data and display using the platform of intelligent mobile phone and bluetooth. Application of Arduino Uno R3 in temperature data acquisition of digital temperature sensor DS18B20 acquisition, through the HC-05 bluetooth transmits the data to the intelligent smart phone Android system, realizes transmission of temperature data. Using Java language to write applications program under Android development environment, can achieve real-time temperature data display, storage and drawing temperature fluctuations drawn graphics. Temperature sensor is experimentally tested to meet the body temperature measurement precision and accuracy. This paper can provide a reference for other smart phone mobile medical product development.

  6. Estructura orbital en el Problema Restringido Rectilíneo Isósceles

    NASA Astrophysics Data System (ADS)

    Orellana, R. B.

    Para definir problemas en Mecánica Celeste se utilizan diferentes parámetros. El conocimiento de la dinámica del problema para valores particulares de estos parámetros nos permite entender el comportamiento en casos más generales. El Problema Restringido Rectilíneo Isósceles puede ser considerado como el caso límite del Problema de Sitnikov cuando la excentricidad tiende a uno o como el Problema Isósceles cuando la masa central tiende a cero. Se ha compactificado el espacio de fases y analizado la dinámica en el límite. Esto ha permitido separar el espacio de fases en diferentes regiones dependiendo de las clases de órbitas.

  7. Development of a working Hovercraft model

    NASA Astrophysics Data System (ADS)

    Noor, S. H. Mohamed; Syam, K.; Jaafar, A. A.; Mohamad Sharif, M. F.; Ghazali, M. R.; Ibrahim, W. I.; Atan, M. F.

    2016-02-01

    This paper presents the development process to fabricate a working hovercraft model. The purpose of this study is to design and investigate of a fully functional hovercraft, based on the studies that had been done. The different designs of hovercraft model had been made and tested but only one of the models is presented in this paper. In this thesis, the weight, the thrust, the lift and the drag force of the model had been measured and the electrical and mechanical parts are also presented. The processing unit of this model is Arduino Uno by using the PSP2 (Playstation 2) as the controller. Since our prototype should be functioning on all kind of earth surface, our model also had been tested in different floor condition. They include water, grass, cement and tile. The Speed of the model is measured in every case as the respond variable, Current (I) as the manipulated variable and Voltage (V) as the constant variable.

  8. Arduino based radiation survey meter

    NASA Astrophysics Data System (ADS)

    Rahman, Nur Aira Abd; Lombigit, Lojius; Abdullah, Nor Arymaswati; Azman, Azraf; Dolah, Taufik; Muzakkir, Amir; Jaafar, Zainudin; Mohamad, Glam Hadzir Patai; Ramli, Abd Aziz Mhd; Zain, Rasif Mohd; Said, Fazila; Khalid, Mohd Ashhar; Taat, Muhamad Zahidee

    2016-01-01

    This paper presents the design of new digital radiation survey meter with LND7121 Geiger Muller tube detector and Atmega328P microcontroller. Development of the survey meter prototype is carried out on Arduino Uno platform. 16-bit Timer1 on the microcontroller is utilized as external pulse counter to produce count per second or CPS measurement. Conversion from CPS to dose rate technique is also performed by Arduino to display results in micro Sievert per hour (μSvhr-1). Conversion factor (CF) value for conversion of CPM to μSvhr-1 determined from manufacturer data sheet is compared with CF obtained from calibration procedure. The survey meter measurement results are found to be linear for dose rates below 3500 µSv/hr.

  9. [Competence in biocentric ethics.

    PubMed

    Stepke, Fernando Lolas

    2012-07-01

    ResumenEste artículo explora el origen y la conceptualización de la bioética en tanto ética biocéntrica, definida por el pionero Fritz Jahr como un imperativo hipotético que llama a respetar la vida en todas sus formas. Tras describirla como proceso social, procedimiento técnico y producto académico, se enumeran y comentan algunas competencias que debieran presidir el empleo del discurso bioético en cualquier punto del complejo social "investigación médica": miembros de comités de ética de investigación, investigadores, empresarios, administradores. Cada uno de estos grupos, en su "cultura epistémica" propia, define y explicita los principios básicos en tanto expresión de valores y leyes generales. PMID:23459767

  10. [Reversible porencephalic cyst related to shunt dysfunction].

    PubMed

    Santín-Amo, José M; Rico-Cotelo, María; Serramito-García, Ramón; Gelabert-González, Miguel; Allut, Alfredo G

    2014-03-16

    Introduccion. El tratamiento quirurgico de la hidrocefalia es uno de los procedimientos quirurgicos mas habituales en la neurocirugia pediatrica, y las derivaciones ventriculoperitoneales constituyen una herramienta fundamental en el tratamiento de la hidrocefalia tanto infantil como del adulto. Las complicaciones de las valvulas son relativamente frecuentes, sobre todo en la poblacion pediatrica, y, entre estas, las mas habituales incluyen: las obstrucciones, las desconexiones, el hiperdrenaje y las infecciones. Caso clinico. Niña de 7,5 años, portadora de una valvula ventriculoperitoneal, que presentaba cefalea intermitente. Un estudio con tomografia computarizada demostro una lesion quistica temporal derecha. Tras la revision valvular, la tomografia computarizada evidencio la reduccion del quiste. Conclusiones. La formacion de una cavidad porencefalica es una complicacion poco frecuente. Se relaciona con problemas en el cateter distal en pacientes con ventriculos dilatados y de las que existen escasas referencias en la bibliografia.

  11. [Effect of metformin addition to an acute lymphoblastic leukemia chemotherapy treatment].

    PubMed

    Ramos-Peñafiel, Christian Omar; Martínez-Murillo, Carlos; Santoyo-Sánchez, Adrián; Jiménez-Ponce, Fiacro; Rozen-Fuller, Etta; Collazo-Jaloma, Juan; Olarte-Carrillo, Irma; Martínez-Tovar, Adolfo

    2014-01-01

    INTRODUCCIÓN: se ha informado efecto benéfico con metformina en pacientes con cáncer. El objetivo de esta investigación fue evaluar el efecto de adicionar metformina a la quimioterapia sobre las recaídas tempranas en pacientes con leucemia linfoblástica aguda. MÉTODOS: estudio prospectivo, longitudinal y experimental de pacientes portadores de leucemia linfoblástica aguda de novo, realizado en el Hospital General de Mexico. La muestra fue dividida en dos brazos de tratamiento: uno recibió metformina (850 mg cada ocho horas) + quimioterapia; otro recibió únicamente quimioterapia estándar. La distribución de los pacientes fue aleatoria, 3:1 a favor del segundo brazo.

  12. An Automatic Editing Algorithm for GPS data

    NASA Astrophysics Data System (ADS)

    Blewitt, Geoffrey

    1990-03-01

    An algorithm has been developed to edit automatically Global Positioning System data such that outlier deletion, cycle slip identification and correction are independent of clock instability, selective availability, receiver-satellite kinematics, and tropospheric conditions. This algorithm, called TurboEdit, operates on undifferenced, dual frequency carrier phase data, and requires (1) the use of P code pseudorange data and (2) a smoothly varying ionospheric electron content. The latter requirement can be relaxed if the analysis software incorporates ambiguity resolution techniques to estimate unresolved cycle slip parameters. TurboEdit was tested on the large data set from the CASA Uno experiment, which contained over 2500 cycle slips. Analyst intervention was required on 1% of the station-satellite passes, almost all of these problems being due to difficulties in extrapolating variations in the ionospheric delay. The algorithm is presently being adapted for real time data editing in the Rogue receiver for continuous monitoring applications.

  13. [Not Available].

    PubMed

    Molina Villaverde, Raquel

    2016-06-03

    El cáncer es un problema sanitario de primera magnitud a escala mundial. Su tratamiento es uno de los mayores campos de innovación y desarrollo en medicina. La visión del cáncer como una enfermedad sistémica, heterogénea y de una elevada complejidad hace que los enfermos deban recibir una atención oncológica de calidad, proporcionada por equipos multidisciplinares altamente cualificados. Además de la gran incidencia de malnutrición en estos pacientes, la intervención nutricional precoz puede mejorar su pronóstico, aumentar la calidad de vida y disminuir la tasa de complicaciones de la enfermedad. Por ello, es necesaria una estrecha colaboración entre el oncólogo y el experto en nutrición.

  14. An automatic editing algorithm for GPS data

    NASA Technical Reports Server (NTRS)

    Blewitt, Geoffrey

    1990-01-01

    An algorithm has been developed to edit automatically Global Positioning System data such that outlier deletion, cycle slip identification, and correction are independent of clock instability, selective availability, receiver-satellite kinematics, and tropospheric conditions. This algorithm, called TurboEdit, operates on undifferenced, dual frequency carrier phase data, and requires the use of P code pseudorange data and a smoothly varying ionospheric electron content. TurboEdit was tested on the large data set from the CASA Uno experiment, which contained over 2500 cycle slips.Analyst intervention was required on 1 percent of the station-satellite passes, almost all of these problems being due to difficulties in extrapolating variations in the ionospheric delay. The algorithm is presently being adapted for real time data editing in the Rogue receiver for continuous monitoring applications.

  15. First GPS baseline results from the North Andes

    NASA Technical Reports Server (NTRS)

    Kellogg, James N.; Freymueller, Jeffrey T.; Dixon, Timothy H.; Neilan, Ruth E.; Ropain, Clemente

    1990-01-01

    The CASA Uno GPS experiment (January-February 1988) has provided the first epoch baseline measurements for the study of plate motions and crustal deformation in and around the North Andes. Two dimensional horizontal baseline repeatabilities are as good as 5 parts in 10 to the 8th for short baselines (100-1000 km), and better than 3 parts in 10 to the 8th for long baselines (greater than 1000 km). Vertical repeatabilities are typically 4-6 cm, with a weak dependence on baseline length. The expected rate of plate convergence across the Colombia Trench is 6-8cm/yr, which should be detectable by the repeat experiment planned for 1991. Expected deformation rates within the North Andes are of the order of 1 cm/yr, which may be detectable with the 1991 experiment.

  16. The first geocenter estimation results using GPS measurements

    NASA Technical Reports Server (NTRS)

    Malla, R. P.; Wu, S. C.

    1990-01-01

    The center of mass of the Earth is the natural and unambiguous origin of a geocentric satellite dynamical system. A geocentric reference frame assumes that the origin of its coordinate axes is at the geocenter, in which all relevant observations and results can be referred and in which geodynamic theories or models for the dynamic behavior of Earth can be formulated. In practice, however, a kinematically obtained terrestrial reference frame may assume an origin other than the geocenter. A fast and accurate method of determining origin offset from the geocenter is highly desirable. Global Positioning System (GPS) measurements, because of their abundance and broad distribution, provide a powerful tool to obtain this origin offset in a short period of time. Two effective strategies have been devised. Data from the first Central and South America (Casa Uno) global GPS experiment were studied to demonstrate the ability of recovering the geocenter location with present-day GPS satellites and receivers.

  17. [Cross-sectional study on the determinants of work stress for nurses and intention of leaving the profession].

    PubMed

    Romano, Marina; Festini, Filippo; Bronner, Leonardo

    2015-01-01

    INTRODUZIONE. Lo stress occupazionale è una delle principali cause di malattie professionali e di assenze da lavoro e genera costi sanitari e sociali molto elevati; la comprensione del problema è stata l'obiet- tivo di numerosi studi. Monitorare lo stress negli infermieri può essere uno strumento per chi ha la responsabilità della gestione delle risorse umane nel sistema sanitario. La ricerca infermieristica italiana si è occupata solo marginalmente di stress lavorativo infermieristico. Gli obiettivi di questo studio sono dunque: stimare la prevalenza di stress tra gli infermieri di tre ospedali, in modo da disporre di dati epidemiologici per valutare la necessità di interventi di prevenzione e di trattamento del fenomeno; analizzare eventuali fattori di rischio e fattori protettivi in modo da progettare interventi preventivi mirati.

  18. Research and implement of remote vehicle monitoring and early-warning system based on GPS/GPRS

    NASA Astrophysics Data System (ADS)

    Li, Shiwu; Tian, Jingjing; Yang, Zhifa; Qiao, Feiyan

    2013-03-01

    Concerning the problem of road traffic safety, remote monitoring and early-warning of vehicle states was the key to prevent road traffic accidents and improve the transportation effectiveness. Through the embedded development technology, a remote vehicle monitoring and early-warning system was developed based on UNO2170 industrial computer of Advantech with WinCE operating system using Embedded Visual C++ (EVC), which combined with multisensor data acquisition technology, global positioning system (GPS) and general packet radio service (GPRS). It achieved the remote monitoring and early-warning of commercial vehicle. This system was installed in a CA1046L2 light truck. Through many road tests, test results showed that the system reacted rapidly for abnormal vehicle states and had stable performance.

  19. Should we treat white line hernias by laparoscopy? About a prospective study of 42 cases.

    PubMed

    Guirat, Ahmed; Trigui, Ayman; Rejab, Haitham; Yaich, Khalil; Affes, Najmedine; Jdidi, Issam; Boujelben, Salah; Abid, Bassem; Amar, Mohamed Ben; Mzali, Rafik

    2015-01-01

    Viene riportato uno studio prospettico su 42 casi di ernia ombelicale ed epigastrica primitive e non complicate trattate per via laparoscopica e seguite in media da un follow up di un anno. Lo scopo di questo studio è quello di valutare il contributo della laparoscopia nel trattamento in termini di risultato nel breve e nel medio periodo. La morbilità chirurgica precoce è stata del 14,3%. A sei mesi dall’intervento il 28,5% dei pazienti ha lamentato dolori nell’area ombelicale. Ad un anno dall’intervento 2 pazienti hanno lamentato la cronicizzazione del dolore. Non si è avuto nessun caso di recidiva. In conclusione l’approccio laparoscopico risulta doversi riservare ai casi di ernia di maggiori dimensioni, ed in caso di recidiva o di laparocele.

  20. Development of a Low-Cost Arduino-Based Sonde for Coastal Applications.

    PubMed

    Lockridge, Grant; Dzwonkowski, Brian; Nelson, Reid; Powers, Sean

    2016-01-01

    This project addresses the need for an expansion in the monitoring of marine environments by providing a detailed description of a low cost, robust, user friendly sonde, built on Arduino Mega 2560 (Mega) and Arduino Uno (Uno) platforms. The sonde can be made without specialized tools or training and can be easily modified to meet individual application requirements. The platform allows for internal logging of multiple parameters of which conductivity, temperature, and GPS position are demonstrated. Two design configurations for different coastal hydrographic applications are highlighted to show the robust and versatile nature of this sensor platform. The initial sonde design was intended for use on a Lagrangian style surface drifter that recorded measurements of temperature; salinity; and position for a deployment duration of less than 24 h. Functional testing of the sensor consisted of a 55 h comparison with a regularly maintained water quality sensor (i.e., YSI 6600 sonde) in Mobile Bay, AL. The temperature and salinity data were highly correlated and had acceptable RMS errors of 0.154 °C and 1.35 psu for the environmental conditions. A second application using the sonde platform was designed for longer duration (~3-4 weeks); subsurface (1.5-4.0 m depths) deployment, moored to permanent structures. Design alterations reflected an emphasis on minimizing power consumption, which included the elimination of the GPS capabilities, increased battery capacity, and power-saving software modifications. The sonde designs presented serve as templates that will expand the hydrographic measurement capabilities of ocean scientists, students, and teachers. PMID:27089337

  1. Bringing the SF-ROCKS Model Beyond the San Francisco Bay Area: Building a Partnership Between the San Francisco State University and the University of New Orleans Geoscience Diversity Programs

    NASA Astrophysics Data System (ADS)

    White, L. D.; Snow, M. K.; Davis, J.; Serpa, L. F.

    2005-05-01

    Since 2001, faculty and graduate students in the Department of Geosciences at San Francisco State University (SFSU) have coordinated a program to encourage high school students from traditionally underrepresented groups to pursue the geosciences. The SF-ROCKS (Reaching Out to Communities and Kids with Science in San Francisco) program is a multifaceted NSF-funded program that includes curriculum enhancement, teacher in-service training, summer and academic year research experiences for high school students, and field excursions to national parks. Six faculty, five graduate students, and several undergraduate students work together to develop program activities. Working with 9th grade integrated science courses, the students are introduced to SF-ROCKS through lesson plans and activities that focus on the unique geologic environments that surround the schools. Each year a group of twelve to fifteen students is selected to participate in a summer and academic year research institute at the SFSU campus. In the four years of our program, twenty-seven ninth and tenth-grade students have participated in the summer and academic year research experiences. We have observed increased interest and skill development as the high school students work closely with university faculty and students. As SF-ROCKS continues to expand, we are exploring ways to partner with other diversity programs such as the long-standing University of New Orleans (UNO) Minority Geoscience summer field program. The UNO program is successful because it combines field exposure and mentoring with scholarship opportunities for students making it more likely they will study geosciences in college. SF-ROCKS is creating additional ways to further enhance the students' perspective of the geosciences through meaningful field and scientific research experiences by focusing on local and regional geologic environments and also on the geology of national parks.

  2. [Frequency of invasive fungal infections in a Mexican High-Specialty Hospital. Experience of 21 years].

    PubMed

    Méndez-Tovar, Luis Javier; Mejía-Mercado, Jessica Aline; Manzano-Gayosso, Patricia; Hernández-Hernández, Francisca; López-Martínez, Rubén; Silva-González, Israel

    2016-01-01

    Introducción: Factores como el cáncer, la infección por VIH, así como el uso de esteroides y antibióticos, incrementan el número de micosis invasivas (MI). Métodos: Para conocer la frecuencia y algunos aspectos epidemiológicos de las MI en un hospital del IMSS, se revisaron los casos probados diagnosticados en los últimos 21 años (1993-2013) en el Laboratorio de Micología Médica. Resultados: Se identificaron 472 casos, distribuidos en: 261 candidosis, 82 mucormicosis, 60 criptococosis, 43 aspergilosis y 16 histoplasmosis. La candidosis disminuyó de 74 casos en los primeros 6 años, a 48 en los cinco últimos. La localización principal fue pulmonar y el principal agente fue C. albicans. La criptococosis también disminuyó de 24 a 10 casos, principalmente fue causada por C. neoformans, aunque hubo dos casos de C. laurentii, uno de C. terreus y uno de C. unigutulatus. La mucormicosis se mantuvo constante, pero la aspergilosis se incrementó pasando de 2 casos en el primer periodo a 23 en el último. Conclusiones: Es importante que los hospitales de alta especialidad, cuenten con laboratorios de micología médica para realizar el diagnóstico de MI. Se sugiere crear un Centro Nacional de Referencia de Micosis donde se concentren los datos de estas infecciones y contribuya en la elaboración de planes de educación para la salud, prevención, diagnóstico y tratamiento de las mismas.

  3. Teorí­as de primer y segundo orden sobre el potencial de ciertas figuras de equilibrio de cuerpos celestes

    NASA Astrophysics Data System (ADS)

    Gumbau, Manuel Forner

    2010-11-01

    Uno de los problemas que aborda la Mecánica Celeste es la determinación de las figuras de equilibrio de los cuerpos celestes. Para investigar su solución mediante métodos directos, se precisa evaluar el potencial generado por su autogravitación, el generado por su fuerza centrí­fuga y el generado por la fuerza de atracción entre los cuerpos. Los métodos clásicos de Finlay y Kopal que afrontan estos problemas, para determinar el potencial autogravitatorio en las configuraciones de equilibrio, emplean desarrollos en serie de los potenciales interior y exterior del potencial autogravitatorio. Estos métodos incurren en el error de suponer la convergencia en capas donde resulta cuestionable dicha convergencia para estos desarrollos en serie. En este trabajo se han elaborado unos algoritmos que contemplan toda la casuí&stica y que permiten una manipulación efic iente del producto de polinomios de Legendre, del producto de funciones asociada s de Legendre y del producto de armónicos esféricos como combinacióon lineal de ellos mismos, respectivamente. Se han obtenido, para primer y segundo orden en las amplitudes, los desarrollos correctos para los potencial es interior y exterior del potencial autogravitatorio para configuraciones de equilibrio aisladas, y , en primer orden de amplitudes, los mismos potenciales para los sistemas binarios próximos. Se ha elaborado un método analítico, en primer orden respecto de las amplitudes, para la determinación del potencial de marea en sistemas binarios próximos en el cual se manifiesta la forma de la componente secundaria del sistema

  4. A model to predict survival at one month, one year, and five years after liver transplantation based on pretransplant clinical characteristics.

    PubMed

    Thuluvath, Paul J; Yoo, Hwan Y; Thompson, Richard E

    2003-05-01

    Reliable models that could predict outcome of liver transplantation (LT) may guide physicians to advise their patients of immediate and late survival chances and may help them to optimize organ use. The objective of this study was to develop user-friendly models to predict short and long-term mortality after LT in adults based on pre-LT recipient characteristics. The United Network for Organ Sharing (UNOS) transplant registry (n = 38,876) from 1987 to 2001 was used to develop and validate the model. Two thirds of patients were randomized to develop the model (the modeling group), and the remaining third was randomized to cross-validate (the cross-validation group) it. Three separate models, using multivariate logistic regression analysis, were created and validated to predict survival at 1 month, 1 year, and 5 years. Using the total severity scores of patients in the modeling group, a predictive model then was created, and the predicted probability of death as a function of total score then was compared in the cross-validation group. The independent variables that were found to be very significant for 1 month and 1 year survival were age, body mass index (BMI), UNOS status 1, etiology, serum bilirubin (for 1 month and 1 year only), creatinine, and race (only for 5 years). The actual deaths in the cross-validation group followed very closely the predicted survival graph. The chi-squared goodness-of-fit test confirmed that the model could predict mortality reliably at 1 month, 1 year, and 5 years. We have developed and validated user-friendly models that could reliably predict short-term and long-term survival after LT. PMID:12740799

  5. Observaciones de fulguraciones en rayos X duros

    NASA Astrophysics Data System (ADS)

    Rovira, M. G.; Mandrini, C. H.

    El objetivo principal de la investigación de las fulguraciones solares es el descubrimiento del proceso responsable de la impredecible, rápida y enorme, liberación de energía que ocurre en ellas. Las evidencias observacionales más claras de esta liberación son la emisión de rayos X y microondas. En particular, la detección de la emisión de rayos X duros (energías entre decenas y centenas de keV) es uno de los elementos de diagnóstico utilizados para comprender los mecanismos de aceleración y transporte de los electrones energéticos que, hoy es aceptado, son los que en su interacción con la atmósfera solar generan los rayos X observados. En 1991 se puso en órbita el Compton Gamma Ray Observatory (CGRO) uno de cuyos instrumentos observa las fulguraciones solares en el rango de energías 15 <= E <= 300 keV con una resolución temporal de 0.064 seg. En este trabajo analizamos, usando la Técnica de la Transformada Discreta en Onditas, algunos de los casos registrados para intentar separar y parametrizar las componentes de distinta escala de tiempo que se superponen durante la fase impulsiva de una fulguración. Discutimos nuestros resultados en términos de las características del mecanismo de liberación de energía.

  6. [Prevalence of domestic violence in pregnant women from 20 to 35 years in a family medicine unit].

    PubMed

    Cervantes-Sánchez, Paulina; Delgado-Quiñones, Edna Gabriela; Nuño-Donlucas, María Olimpia; Sahagún-Cuevas, Minerva Natalia; Hernández-Calderón, Jéssica; Ramírez-Ramos, Joana Kareli

    2016-01-01

    Introducción: la violencia contra la mujer es uno de los problemas sanitarios de mayor relevancia en los últimos tiempos. Durante el embarazo se reporta un 21.5 % de prevalencia en nuestro país y se cree que esta está subdiagnosticada. El objetivo fue conocer la prevalencia de violencia intrafamiliar en embarazadas de 20 a 35 años de la Unidad de Medicina Familiar 171 (UMF 171) del Instituto Mexicano del Seguro Social. Métodos: estudio transversal-descriptivo con pacientes embarazadas de 20 a 35 años con una muestra de 102 embarazadas a las cuales se les aplicó un cuestionario sociodemográfico y el instrumento índice de severidad de violencia de pareja (ISVP). Se utilizó media, porcentajes y chi cuadrada para los resultados. Resultados: el 18.6 % de las participantes (n = 19) padeció violencia. De estas la violencia física se presentó en el 10.8 % (n = 11), seguida de la violencia psicológica en un 5.9 % (n = 6) y la violencia sexual en 4 % (n = 4). Se empleó chi cuadrada entre la variable violencia y cada uno de los factores sociodemográficos: 52.6 % (n = 10) eran casadas (p 0.005), 26.3 % (n = 5) tenían licenciatura (p 0.074), 57.8 % (n = 11) habían planeado su embarazo, 47.3 % (n = 9) cursaban el tercer trimestre de embarazo y 78.95 % (n = 15) tenían un trabajo entre obreras, comerciantes o profesionistas (p 0.016). Conclusiones: la violencia intrafamiliar es un problema presente en las embarazadas de la UMF 171, con una prevalencia de 18.6 %.

  7. [Drooling therapy in children with neurological disorders].

    PubMed

    Táboas-Pereira, M Andrea; Paredes-Mercado, Cecilia; Alonso-Curcó, Xènia; Badosa-Pagès, Joaquim; Muchart, Jordi; Póo, Pilar

    2015-07-16

    Introduccion. La sialorrea es la incapacidad para retener la saliva dentro de la boca y su progresion al tracto digestivo, y es un problema frecuente en pacientes pediatricos con patologia neurologica, por lo que se estan utilizando diferentes medidas para su tratamiento. Objetivo. Evaluar la eficacia y seguridad del trihexifenidilo, la escopolamina y la infiltracion de toxina botulinica en el tratamiento del babeo en niños con patologia neurologica. Pacientes y metodos. Es un estudio de tipo abierto y prospectivo. Incluye pacientes atendidos en el servicio de neurologia que presentaban babeo excesivo, con repercusion en su calidad de vida, entre 2009 y 2013. Resultados. En 46 pacientes se indico tratamiento con trihexifenidilo oral, y se obtuvo buena respuesta en 15 (32,6%), tres con efecto transitorio y el resto mantenido. Presentaron efectos secundarios tres pacientes (6,5%). De los 11 pacientes a los que se indicaron parches de escopolamina, se hallo efecto beneficioso en cuatro (36,36%), uno fue retirado por falta de eficacia y seis por efectos secundarios. Veinticinco pacientes fueron infiltrados con toxina botulinica, con disminucion significativa del babeo en 16 (64%) tras la primera infiltracion. No observamos cambios significativos en nueve casos. Solo uno presento efectos secundarios (disfagia leve). Conclusiones. Por no haber una opcion terapeutica totalmente eficaz para los pacientes con sialorrea, recomendamos iniciar el tratamiento con trihexifenidilo; como segunda opcion, los parches de escopolamina, y como tercera opcion, la toxina botulinica. La infiltracion de toxina botulinica en glandulas salivales se muestra como una alternativa eficaz y segura segun nuestra serie.

  8. [Randomized clinical trials on the sugar sweetened beverages on adiposity in olders than 13 y; systematic review].

    PubMed

    Gómez-Miranda, Luis Mario; Jiménez-Cruz, Arturo; Bacardí-Gascón, Montserrat

    2013-11-01

    Introducción: Se ha observado una asociación entre el aumento del consumo de bebidas azucaradas y las enfermedades metabólicas. Objetivo: Analizar estudios aleatorizados (EA) en ≥ 13 años de edad, de 18 o más semanas de intervención, que valoren la reducción o el aumento en el consumo de bebidas azucaradas, saborizadas, jugos de frutas y bebidas carbonatadas, sobre indicadores de adiposidad. Metodología: Se realizó una búsqueda en PubMed, de EA publicados hasta el 10 de abril de 2013. El término utilizado para la búsqueda fue “Sugar Sweetened Beverages”. Se encontraron tres estudios enfocados a reducir y uno a aumentar12 el consumo de bebidas azucaradas. Resultados: En uno de los estudios dirigidos a reducir el consumo, se observó una ligera reducción del IMC en el grupo de intervención (p=0.045). En otro estudio se observó que la reducción de 355 ml/día se asoció a una pérdida de peso de 0.7 kg (IC 95%: 0.2-1.1, p=0.01). En el estudio para aumentar el consumo, se observó un aumento del cociente de la grasa visceral y la grasa subcutánea abdominal en el grupo que consumió Coca Cola regular y una disminución en el grupo que consumió leche descremada (p=0.01). Conclusión: Los resultados indican la tendencia hacía un efecto de la ingesta de bebidas azucaradas sobre la adiposidad.

  9. Seeds of a possible natural hybrid between herbicide-resistant Brassica napus and Brassica rapa detected on a riverbank in Japan.

    PubMed

    Aono, Mitsuko; Wakiyama, Seiji; Nagatsu, Masato; Kaneko, Yukio; Nishizawa, Toru; Nakajima, Nobuyoshi; Tamaoki, Masanori; Kubo, Akihiro; Saji, Hikaru

    2011-01-01

    Transgenic herbicide-resistant varieties of Brassica napus, or oilseed rape, from which canola oil is obtained, are imported into Japan, where this plant is not commercially cultivated to a large extent. This study aimed to examine the distribution of herbicide-resistant B. napus and transgene flow to escaped populations of its closely related species, B. rapa and B. juncea. Samples were collected from 12 areas near major ports through which oilseed rape imports into Japan passed--Kashima, Chiba, Yokohama, Shimizu, Nagoya, Yokkaichi, Sakai-Senboku, Kobe, Uno, Mizushima, Kita-Kyushu, and Hakata--and the presence of glyphosate- and/or glufosinate-resistant B. napus was confirmed in all areas except Yokohama, Sakai-Senboku, Uno, and Kita-Kyushu. The Yokkaichi area was the focus because several herbicide-resistant B. napus plants were detected not only on the roadside where oilseed rape spilled during transportation but also on the riverbanks, where escaped populations of B. rapa and B. juncea grew. Samples of B. napus that were tolerant to both herbicides were detected in four continuous years (2005-2008) in this area, suggesting the possibility of intraspecific transgene flow within the escaped B. napus populations. Moreover, in 2008, seeds of a possible natural hybrid between herbicide-tolerant B. napus (2n = 38) and B. rapa (2n = 20) were detected; some seedlings derived from the seeds collected at a Yokkaichi site showed glyphosate resistance and had 2n = 29 chromosomes. This observation strongly suggests the occurrence of hybridization between herbicide-resistant B. napus and escaped B. rapa and the probability of introgression of a herbicide-resistance gene into related escaped species.

  10. [Dapagliflozin, a novel oral antidiabetic with an uncertain future].

    PubMed

    Escudero Vilaplana, Belén; Almodóvar Carretón, María José; Herrero Hernández, Silvia

    2014-11-03

    Objetivo: La diabetes mellitus tipo 2 (DM2) es uno de los principales problemas sociosanitarios a nivel mundial, para la que existen multitud de tratamientos. Recientemente, se ha aprobado el primer farmaco de una nueva familia de antidiabeticos orales (ADO): la dapagliflozina. Nuestro objetivo es revisar la evidencia cientifica disponible sobre la dapagliflozina, con el fin de analizar su eficacia, seguridad y coste y poder estimar su papel en la farmacoterapia actual de la DM2. Métodos: La eficacia y seguridad de la dapagliflozina se analizaron mediante una evaluacion de la evidencia cientifica. El coste de los diferentes ADO se calculo en base a sus dosis diarias definidas (DDD) y al precio de venta del laboratorio. Resultados: Se identificaron 7 ensayos clinicos aleatorizados: 2 en monoterapia (840 pacientes) y 5 en terapia combinada con otros antidiabeticos (3184 pacientes). En los 7 ensayos, la dapagliflozina redujo la concentracion de HbA1c; en todos se comparo con placebo, salvo en un estudio en terapia combinada que se comparo frente a farmaco activo (glipizida). Entre los efectos adversos mas frecuentes se detectaron infecciones genitourinarias e hipotension, aunque se debe prestar especial atencion al incremento del cancer de vejiga. Junto con los inhibidores de la DPP-4, la dapagliflozina es uno de los ADO de mayor coste (coste anual de DDD=729,3 euros). Conclusiones: La dapagliflozina no aporta ventajas respecto a la farmacoterapia de la DM2 ya existente. Su falta de experiencia de uso, la ausencia de importantes beneficios clinicos y su elevado coste hacen necesario restringir su utilizacion.

  11. Protegiendo a su familia de los terremotos-Los siete pasos a la seguridad para prepararse en caso de un terremoto (en espa?ol y en ingles)

    USGS Publications Warehouse

    Desarrollado por American Red Cross, Asian Pacific Fund

    2007-01-01

    Les escribimos esta carta para comunicarle un mensaje sumamente importante sobre las preparaciones de emergencia. Historicamente, hemos sufrido terremotos aqui en el Area de la Bahia de San Francisco que han causado graves privaciones para los residentes de la comunidad y da?os increibles a nuestras ciudades. Es probable que suframos un terremoto de gran magnitud en los proximos 30 a?os. Muchos de nosotros venimos de otros paises donde hemos pasado por terremotos y por eso creemos entenderlos. Sin embargo, la manera que nos preparamos para terremotos en nuestros paises de origen puede ser distinta a la que empleamos aca en los Estados Unidos. Muy pocas personas mueren a causa de los derrumbes de los edificios en el Area de la Bahia porque la mayoria de los edificios son construidos para resistir el sacudimiento de la tierra. Pero es muy probable que su familia no tenga atencion medica, alimentos o que esten separados del uno al otro por dias o semanas. Finalmente depende de usted mantener a su familia a salvo hasta que llegue asistencia, por eso les pedimos que nos unamos para aprender a cuidar a su familia antes, durante, y despues de un terremoto. El primer paso es leer este libro. Cada uno de su familia, ni?os y adultos, pueden aprender como prepararse para un terremoto. Haga participar e incluya sus ni?os; pueden ayudarle a prepararse. Aproveche las clases ofrecidas en su comunidad sobre las preparaciones de terremotos por la Cruz Roja Estadounidense (American Red Cross). Estos cursos de preparacion son gratis y disponibles en espa?ol para todos en la comunidad sin tomar en cuenta la historia de la familia, estado legal, genero o edad. Les recomendamos que tome ventaja de estas clases gratuitas. Para mas informacion consulte la ultima pagina de este libro. Recuerde que un terremoto puede ocurrir sin aviso y la unica manera de reducir el da?o de terremotos es estar preparados. !Preparese!

  12. [Mango: agroindustrial aspects, nutritional/functional value and health effects].

    PubMed

    Wall-Medrano, Abraham; Olivas-Aguirre, Francisco J; Velderrain-Rodriguez, Gustavo R; González-Aguilar, A; de la Rosa, Laura A; López-Díaz, Jose A; Álvarez-Parrilla, Emilio

    2014-11-01

    Objetivo: Revisar y discutir la información más reciente sobre el valor agroindustrial, funcional y nutricional de uno de los frutos de mayor cultivo, exportación y consumo en México: el Mango. Métodos: Se realizó una búsqueda en diversas bases de datos (PubMed, Cochrane, ScienceDirect) y documentos de libre acceso (Google Scholar) sobre Mangifera indica L. Esta información fue posteriormente sub-clasificada en aspectos agroindustriales, nutricionales, funcionales y efectos a la salud. Resultados: Uno de cada veinte mangos consumidos mundialmente, es mexicano. “Ataulfo” es la variedad la de mayor importancia agronómica. El procesamiento mínimo de su pulpa (MP) genera residuos de cáscara (MC) y semilla con alto potencial nutracéutico. MP y MC son buenas fuentes de ascorbato, fructosa, fibra dietarias soluble (MP, almidones y ramnogalacturonanos) e insoluble (MC, ligninas y hemicelulosa) y lípidos funcionales (MP). MP y MC poseen un perfil de compuestos fenólicos (CF) monoméricos (MP) como el acido gálico y el protocatehuico y poliméricos (MC) como la -PGG asociados con efectos anti-obesigénicos, anti-inflamatorios, anti-cancerigenos y anti-diabeticos. Estos beneficios son dependientes de la bioaccesibilidad (liberación de su matriz alimentaria) y destino metabólico (biodisponibilidad) de estos CF. Discusión: El mango resulta una valiosa fuente de compuestos antioxidantes con comprobado beneficio a la salud. Sin embargo, factores como la variedad, temporalidad de cultivos, tratamientos pre y post-cosecha, extracción de bioactivos y algunas barreras fisiológicas pueden modificar su potencial nutracéutico.

  13. [Status epilepticus in paediatrics: a retrospective study and review of the literature].

    PubMed

    Moreno-Medinilla, Esther E; Negrillo-Ruano, Rocío; Calvo-Medina, Rocío; Mora-Ramírez, M Dolores; Martínez-Antón, Jacinto L

    2015-05-01

    Introduccion. El estado epileptico (EE) es la emergencia neurologica mas frecuente en pediatria. Dada la posibilidad de secuelas neurologicas y mortalidad asociadas, requiere un tratamiento agresivo precoz. Pacientes y metodos. Estudio descriptivo retrospectivo a traves de la revision de historias clinicas de pacientes ingresados en nuestro hospital entre 2010-2013 con diagnostico de EE. El objetivo fue describir las caracteristicas epidemiologicas y el manejo de estos pacientes, asi como revisar la bibliografia disponible sobre este tema. Resultados. Hemos recogido 39 pacientes (25 varones) y 51 episodios de EE. Edad media: 4,8 años. Tenian enfermedad de base 22 pacientes. Dieciocho eran epilepticos conocidos y cinco tuvieron un EE previo. De los 51 episodios de EE, 33 fueron sintomaticos, 15 febriles y tres criptogenicos. Los tipos de EE fueron: 25 parciales (de ellos, 16 complejos) y 26 generalizados. El tratamiento de primera eleccion fue benzodiacepinas en 47 pacientes (40, diacepam), fenitoina en tres y acido valproico en uno. Veintisiete pacientes precisaron farmacos de segunda linea: 16, acido valproico; ocho, fenitoina; dos, fenobarbital; y uno, levetiracetam. Diez pacientes precisaron farmacos de tercera linea para la induccion del coma: el midazolam fue el mas utilizado en nuestro centro, seguido del tiopental y el propofol. Dos EE superrefractarios requirieron inmunoglobulinas y corticoides sistemicos por presentarse en el curso de encefalitis autoinmunes. Conclusiones. Debe plantearse el esquema terapeutico del EE desde el inicio de cualquier crisis convulsiva. El tratamiento es escalonado, con benzodiacepinas en la primera etapa, antiepilepticos de amplio espectro y disponibilidad intravenosa en la segunda (acido valproico, levetiracetam en el EE generalizado y fenitoina en el EE focal), mientras que el tercer nivel varia en funcion de la experiencia de cada equipo.

  14. [Malignant mesothelioma risk factors: experience in the General Hospital of Mexico].

    PubMed

    Hernández-Solís, Alejandro; Garcia-Hernández, Cyntia; Reding-Bernal, Arturo; Cruz-Ortiz, Humberto; Cicero-Sabido, Raúl

    2013-01-01

    Antecedentes: el mesotelioma maligno es un tumor de mal pronóstico relacionado con el contacto con asbesto; sin embargo, existen numerosos casos sin este antecedente. Objetivo: describir la relación entre la exposición al asbesto y otros factores con el mesotelioma maligno. Material y métodos: estudio retrospectivo de casos y controles pareado 1: 1-3 por edad y sexo de pacientes con diagnóstico de mesotelioma maligno. Se registraron: la exposición al asbesto, tabaco, humo de leña y antecedentes familiares de cáncer. Se empleó regresión logística para razones de momios (ORs). Resultados: se estudiaron 61 casos con mesotelioma maligno, 41 hombres y 20 mujeres. La edad promedio fue 56 ± 13 años; 56 casos fueron mesotelioma maligno epitelial (91.8%), tres sarcomatosos (4.9%), uno desmoplásico y uno bifásico. Sólo en 8 (13.1%) se identificó exposición al asbesto. En el modelo de regresión logística el asbesto tuvo una razón de momios de 3.083 p > 0.05. Ninguna otra variable resultó ser un factor de riesgo para mesotelioma maligno. Conclusiones: la exposición al asbesto es un factor de riesgo para mesotelioma maligno, lo que se confirma en este estudio; sin embargo, es importante ampliar la investigación de otros posibles factores causales de esta enfermedad.

  15. [Peripheral vertigo versus central vertigo. Application of the HINTS protocol].

    PubMed

    Batuecas-Caletrío, Ángel; Yáñez-González, Raquel; Sánchez-Blanco, Carmen; González-Sánchez, Enrique; Benito, José; Gómez, José Carlos; Santa Cruz-Ruiz, Santiago

    2014-10-16

    Introduccion. Uno de los dilemas mas importantes concernientes al vertigo en urgencias es su diagnostico diferencial. Existen signos de alarma de gran sensibilidad en la exploracion que pueden ponernos en la pista de encontrarnos ante un vertigo central. Objetivo. Determinar la eficacia de la aplicacion del protocolo HINTS en el diagnostico del accidente cerebrovascular que simula un vertigo periferico. Pacientes y metodos. Estudio observacional descriptivo sobre pacientes ingresados con diagnostico de sindrome vestibular agudo en urgencias. Todos los pacientes fueron objeto de un seguimiento diario hasta la mejoria de sus sintomas con informacion del nistagmo, la maniobra de impulso oculocefalico y el test de skew. Se comparan los resultados del estudio de resonancia magnetica con la alteracion en alguno de esos tres signos a lo largo del ingreso del enfermo. Resultados. Se reunio a 91 pacientes, con una edad media de 55,8 años. Se objetivo un accidente cerebrovascular en ocho de ellos. De estos (edad media: 71 años), en siete existia una alteracion en alguno de los signos HINTS y en uno el estudio fue normal (sensibilidad: 0,88; especificidad: 0,96). Todos ellos tenian algun factor de riesgo vascular. Conclusiones. Una exploracion adecuada y dirigida ante un paciente que acude a urgencias con un sindrome vestibular agudo resulta de vital importancia para establecer el diagnostico diferencial entre la patologia periferica y la central, ya que algunos accidentes cerebrovasculares se pueden presentar bajo la apariencia de un vertigo agudo. Aplicar un protocolo como HINTS permite sospechar la patologia central con una gran sensibilidad y especificidad.

  16. Development of a Low-Cost Arduino-Based Sonde for Coastal Applications

    PubMed Central

    Lockridge, Grant; Dzwonkowski, Brian; Nelson, Reid; Powers, Sean

    2016-01-01

    This project addresses the need for an expansion in the monitoring of marine environments by providing a detailed description of a low cost, robust, user friendly sonde, built on Arduino Mega 2560 (Mega) and Arduino Uno (Uno) platforms. The sonde can be made without specialized tools or training and can be easily modified to meet individual application requirements. The platform allows for internal logging of multiple parameters of which conductivity, temperature, and GPS position are demonstrated. Two design configurations for different coastal hydrographic applications are highlighted to show the robust and versatile nature of this sensor platform. The initial sonde design was intended for use on a Lagrangian style surface drifter that recorded measurements of temperature; salinity; and position for a deployment duration of less than 24 h. Functional testing of the sensor consisted of a 55 h comparison with a regularly maintained water quality sensor (i.e., YSI 6600 sonde) in Mobile Bay, AL. The temperature and salinity data were highly correlated and had acceptable RMS errors of 0.154 °C and 1.35 psu for the environmental conditions. A second application using the sonde platform was designed for longer duration (~3–4 weeks); subsurface (1.5–4.0 m depths) deployment, moored to permanent structures. Design alterations reflected an emphasis on minimizing power consumption, which included the elimination of the GPS capabilities, increased battery capacity, and power-saving software modifications. The sonde designs presented serve as templates that will expand the hydrographic measurement capabilities of ocean scientists, students, and teachers. PMID:27089337

  17. Development of a Low-Cost Arduino-Based Sonde for Coastal Applications.

    PubMed

    Lockridge, Grant; Dzwonkowski, Brian; Nelson, Reid; Powers, Sean

    2016-04-13

    This project addresses the need for an expansion in the monitoring of marine environments by providing a detailed description of a low cost, robust, user friendly sonde, built on Arduino Mega 2560 (Mega) and Arduino Uno (Uno) platforms. The sonde can be made without specialized tools or training and can be easily modified to meet individual application requirements. The platform allows for internal logging of multiple parameters of which conductivity, temperature, and GPS position are demonstrated. Two design configurations for different coastal hydrographic applications are highlighted to show the robust and versatile nature of this sensor platform. The initial sonde design was intended for use on a Lagrangian style surface drifter that recorded measurements of temperature; salinity; and position for a deployment duration of less than 24 h. Functional testing of the sensor consisted of a 55 h comparison with a regularly maintained water quality sensor (i.e., YSI 6600 sonde) in Mobile Bay, AL. The temperature and salinity data were highly correlated and had acceptable RMS errors of 0.154 °C and 1.35 psu for the environmental conditions. A second application using the sonde platform was designed for longer duration (~3-4 weeks); subsurface (1.5-4.0 m depths) deployment, moored to permanent structures. Design alterations reflected an emphasis on minimizing power consumption, which included the elimination of the GPS capabilities, increased battery capacity, and power-saving software modifications. The sonde designs presented serve as templates that will expand the hydrographic measurement capabilities of ocean scientists, students, and teachers.

  18. Micro, meso, macro

    NASA Astrophysics Data System (ADS)

    Liljenström, Hans; Svedin, Uno

    1. System features, dynamics, and resilience - some introductory remarks / Hans Liljenström & Uno Svedin -- pt. I. The "vertical" system structure and meso-level characteristics. 2. Mesoscopic levels in science - some comments / Hermann Haken. 3. The necessity for mesoscopic organization to connect neural function to brain function / Walter J. Freeman. 4. Dynamic state transitions in the nervous system: from ion channels to neurons to networks / Peter Århem ... [et al.]. 5. A revolution in the Middle Kingdom / Robert E. Ulanowicz. 6. The meso-scale level of self-maintained reflective systems / Abir U. Igamberdiev -- pt. II. Inner and outer dynamics. 7. Time rescaling and generalized entropy in relation to the internal measurement concept / Igor Rojdestvenski & Michael G. Cottam. 8. Studying dynamic and stochastic systems using Poisson simulation / Leif Gustafsson. 9. Resource dynamics, social interactions, and the tragedy of the commons / Alia Mashanova & Richard Law. 10. Stability of social interaction / Sjur D. Flåm -- pt. III. Resilience and shocks. 11. Systems, shocks and time bombs / Nick Winder. 12. Biodiversity decreases the risk of collapse in model food webs / Charlotte Borrvall, Maria Christianou & Bo Ebenman. 13. A long-term perspective on resilience in socio-natural systems / Sander E. van der Leeuw & Christina Aschan-Leygonie. 14. Resilience in utility technologies / Roger Seaton. 15. Economic growth under shocks: path dependencies and stabilization / Yuri M. Ermoliev, Tatiana Y. Ermolieva & Vladimir I. Norkin. 16. Risk and crises management in complex systems / Koen Bertels, Jean-Marie Jacques & Magnus Boman. 17. Bridges, connections and interfaces - reflections over the meso theme / Uno Svedin & Hans Liljenström.

  19. Grazer Effects on Stream Primary Production and Nitrate Utilization: Estimating Feedbacks Under Reduced Nitrate Levels at High-Temporal Resolutions from the Patch to Reach-Scale

    NASA Astrophysics Data System (ADS)

    Reijo, C. J.; Cohen, M. J.

    2015-12-01

    While nutrient enrichment is often identified as the leading cause for changes in stream gross primary production (GPP) and shifts in vegetative communities, other factors such as grazers influence overall stream structure and function. Evidence shows that grazers are a top-down control on algae in streams; however, the specific feedbacks between overall stream metabolism, grazer effects, and nutrient cycling have been variable and little is known about these interactions at nutrient levels below ambient. To further our understanding of these linkages, a nutrient depletion chamber was created and paired with high-resolution in situ sensors to estimate stream metabolism and characterize nitrate uptake (UNO3) pathways (i.e. plant uptake and denitrification). The Plexiglas chamber blocks flow and nutrient supply, inserts into upper sediments, allows light in and sediment-water-air interactions to occur. At Gum Slough Springs, FL, nitrate was reduced from ambient levels (1.40 mg N/L) to below regulatory thresholds (ca. 0.20 mg N/L) within one week. Paired chambers with and without the presence of snails (Elimia floridensis) were deployed across submerged aquatic vegetation (SAV; Vallisneria americana) and algae (Lyngbya) substrates. Results show that GPP and UNO3 were higher under SAV (70 g O2/m2/d and 300 mg NO3/m2/d, respectively) and a general lack of nutrient limitation even at low [NO3]. Grazer effects differed by vegetation type as it alleviated the reduction of NO3 levels and GPP under SAV but enhanced the decrease of algal GPP and NO3 levels over time. Continued work includes estimating grazer effects on denitrification, quantifying snail nutrient excretion contributions, and scaling up all estimates from the patch to reach level. Overall, this study will further our understanding of grazer-production-nutrient interactions within stream systems, making it possible to predict changes in feedbacks when one part of the biotic or abiotic ecosystem is altered.

  20. [Clinical characteristics of the thyroid follicular carcinoma].

    PubMed

    Gutiérrez-Hermosillo, Hugo; Tamez-Peréz, Héctor Eloy; Díaz de León-Gonzaléz, Enrique; Gutiérrez-Hermosillo, Violeta; Avila-Sanchéz, Jair

    2013-01-01

    Introducción: se ha identificado carcinoma folicular en 39 % de los pacientes con nódulos tiroideos cuya citología prequirúrgica ha indicado resultados indeterminados. El propósito de esta investigación fue conocer la prevalencia de esta entidad en un hospital de concentración. Métodos: se buscaron los reportes quirúrgicos con diagnóstico de carcinoma folicular. Se registró tamaño del tumor, sexo y edad del paciente, diagnósticos pre y posquirúrgico y patologías asociadas. Resultados: se diagnosticó carcinoma folicular en 35 pacientes: 30 mujeres (85 %) y cinco hombres (15 %). La edad en los hombres fue de 57 ± 6.6 y de 44 ± 16.9 en las mujeres. Los diagnósticos preoperatorios fueron carcinoma folicular en 14 (40 %), cáncer tiroideo en seis (17.1 %), adenoma folicular en cuatro (11.4 %), bocio en tres (8.5 %), nódulo tiroideo en tres (8.5 %); carcinoma papilar, tumor de tiroides, carcinoma poco diferenciado de tiroides, adenocarcinoma folicular bien diferenciado, cáncer medular en un paciente (2.8 %) cada uno. Las patologías asociadas fueron tiroiditis de Hashimoto y carcinoma papilar contralateral, con dos pacientes cada uno (5.6 %). Conclusiones: la edad de los pacientes y la presentación clínica del carcinoma folicular difirieron de las informadas en otras investigaciones.

  1. [Hemicrania continua and paroxysmal hemicrania: clinical and therapeutic characteristics in a series of 23 patients].

    PubMed

    Benítez-Rivero, Sonia; González-Oria, Carmen; Gómez-Caravaca, Teresa; Bernal Sánchez-Arjona, María; Jiménez-Hernández, M Dolores

    2014-10-16

    Introduccion. Las hemicraneas son cefaleas raras caracterizadas por dolor estrictamente unilateral, bien como una cefalea continua, aunque fluctuante, en la hemicranea continua (HC), o en forma de ataques recurrentes en la hemicranea paroxistica (HP). En ambos tipos de cefalea se describe una respuesta absoluta a la indometacina. Objetivo. Analizar el cumplimiento de los criterios diagnosticos actuales para HC y HP, y la reciente introduccion de la HC en el grupo de las cefaleas trigeminoautonomicas. Pacientes y metodos. Evaluamos retrospectivamente las caracteristicas clinicas y terapeuticas de pacientes diagnosticados de HC o HP. Incluimos informacion demografica, sintomatologia, escala analogica de dolor y respuesta a la indometacina. Resultados. Evaluamos una muestra de 12 pacientes con HC (cuatro hombres y ocho mujeres) de un total de 520 casos (2,3%). Edad media de inicio: 47,1 ± 16,4 años. Intensidad de dolor basal: 3,3 ± 1,9. Exacerbaciones: 9,2 ± 1,1. Ocho casos (66,7%) presentaban sintomas autonomicos, cuatro (33,3%) tenian patron horario y dos (16,7%) no respondieron a la indometacina. Evaluamos una muestra de 11 pacientes con HP (100% mujeres) de 520 casos (2,1%). Edad media de inicio: 37,0 ± 13,9 años. Intensidad de dolor: 8,7 ± 2,7. Nueve casos (81,8%) presentaban sintomas autonomicos, tres (27,3%) tenian patron horario y uno (9,1%) no respondio a la indometacina. Conclusiones. Las hemicraneas son diagnosticos infrecuentes en consultas de cefalea. Su diagnostico requiere el cumplimiento de unos criterios que a veces no se cumplen en su totalidad. Pensamos que se precisa una revision de los criterios y apoyamos que la HC se haya introducido recientemente en el grupo de las cefaleas trigeminoautonomicas.

  2. Treating and Downstaging Hepatocellular Carcinoma in the Caudate Lobe with Yttrium-90 Radioembolization

    SciTech Connect

    Ibrahim, Saad M.; Kulik, Laura; Baker, Talia; Ryu, Robert K.; Mulcahy, Mary F.; Abecassis, Michael; Salem, Riad; Lewandowski, Robert J.

    2012-10-15

    Purpose: This study was designed to determine the technical feasibility, safety, efficacy, and potential to downstage patients to within transplantation criteria when treating patients with hepatocellular carcinoma (HCC) of the caudate lobe using Y90 radioembolization. Methods: During a 4-year period, 8 of 291 patients treated with radioembolization for unresectable HCC had disease involving the caudate lobe. All patients were followed for treatment-related clinical/biochemical toxicities, serum tumor marker response, and treatment response. Imaging response was assessed with the World Health Organization (WHO) and European Association for the Study of the Liver (EASL) classification schemes. Pathologic response was reported as percent necrosis at explantation. Results: Caudate lobe radioembolization was successfully performed in all eight patients. All patients presented with both cirrhosis and portal hypertension. Half were United Network for Organ Sharing (UNOS) stage T3 (n = 4, 50%). Fatigue was reported in half of the patients (n = 4, 50%). One (13%) grade 3/4 bilirubin toxicity was reported. One patient (13%) showed complete tumor response by WHO criteria, and three patients (38%) showed complete response using EASL guidelines. Serum AFP decreased by more than 50% in most patients (n = 6, 75%). Four patients (50%) were UNOS downstaged from T3 to T2, three of who underwent transplantation. One specimen showed histopathologic evidence of 100% complete necrosis, and two specimens demonstrated greater than 50% necrosis. Conclusions: Radioembolization with yttrium-90 appears to be a feasible, safe, and effective treatment option for patients with unresectable caudate lobe HCC. It has the potential to downstage patients to transplantation.

  3. Tv food advertising geared to children in Latin-American countries and Hispanics in the USA: a review.

    PubMed

    Bacardí-Gascón, Montserrat; Jiménez-Cruz, Arturo

    2015-05-01

    Introducción: El propósito de esta revisión fue analizar los estudios sobre anuncios de alimentos en la TV en Latinoamérica y en los EEUU dirigidos a Hispanos. Métodos: Se realizó una búsqueda electrónica de trabajos publicados de 1986 a 2015, en las bases de datos de MEDLINE/PubMed, EMBASE, SCIELO, y CINAHL, en internet de acceso abierto, sobre anuncios de alimentos en la televisión dirigidos a niños en países latinoamericanos y a Hispanos que viven en los Estados Unidos. Resultados: La búsqueda dio como resultado veinticuatro estudios, seis realizados en Chile, cinco en México, cuatro en Brasil, tres en Hispanos de EEUU, y uno en cada uno de los siguientes países: Argentina, Perú, Colombia, Honduras y Venezuela. Una gran proporción de anuncios sobre alimentos en la TV están dirigidos a los niños y a sus familias. Esta exposición ha sido asociada a la preferencia y solicitud de compra de estos alimentos por los niños y con un aumento del IMC, sobrepeso y obesidad en niños y adultos. Conclusión: Se observa una alarmante alta exposición de anuncios de alimentos en la TV dirigida a niños, lo que demanda políticas regulatorias, supervisión, y rendimiento de cuentas eficaces.

  4. [Parenteral nutrition in pediatric patients: indications and complications in third level].

    PubMed

    Ríos-González, Roxana; Anaya-Florez, María Salomé; Gutiérrez-Hernández, Jorge Isaac; Morán-Villota, Segundo

    2015-01-01

    Introducción: la nutrición parenteral (NP) es una mezcla que cubre las necesidades nutricionales cuando no es posible lograr esta tarea por la vía enteral en el paciente; sin embargo, no está exenta de complicaciones. El objetivo del estudio fue conocer la indicación y la frecuencia de complicaciones de la NP en pacientes pediátricos atendidos en un centro de tercer nivel. Métodos: se incluyeron niños que recibieron NP en el Hospital de Pediatría del Centro Médico Nacional Siglo XXI del Instituto Mexicano del Seguro Social. Se registraron las características demográficas, antropométricas, la causa de la indicación de la NP, su tiempo de administración y las complicaciones asociadas a este tipo de nutrición. Resultados: se incluyeron 69 pacientes pediátricos: 33 recién nacidos (RN) y 18 lactantes entre uno y 11 meses de edad; nueve preescolares entre uno y cinco años, y nueve niños mayores de cinco años. Las enfermedades del tracto digestivo tratadas quirúrgicamente constituyeron el 71 % de las indicaciones para el inicio de NP. Se presentaron complicaciones en el 87 % de los pacientes y 76.7% tuvieron más de una complicación. Las complicaciones metabólicas representaron 98 %, las mecánicas 1 % y las infecciosas 1 %. Conclusión: la NP en este centro de tercer nivel se indicó principalmente a pacientes sometidos a cirugía del tracto digestivo.

  5. High rate of unemployment after liver transplantation: analysis of the United Network for Organ Sharing database.

    PubMed

    Huda, Amina; Newcomer, Robert; Harrington, Charlene; Blegen, Mary G; Keeffe, Emmet B

    2012-01-01

    The goal of liver transplantation (LT) is to maximize the length and quality of a patient's life and facilitate his or her return to full productivity. The aims of this study were (1) to use the United Network for Organ Sharing (UNOS) data set to determine the proportions of recipients who were employed and unemployed within 24 months after LT between 2002 and 2008 and (2) to examine the factors associated with a return to employment. UNOS data that were collected since the adoption of the Model for End-Stage Liver Disease scoring system on February 27, 2002 were analyzed. There were 21,942 transplant recipients who met the inclusion criteria. The employment status of the recipients was analyzed within a 60-day window at the following times after transplantation: 6, 12, and 24 months. Approximately one-quarter of the LT recipients (5360 or 24.4%) were employed within 24 months after transplantation, and the remaining recipients had not returned to work. The demographic variables that were independently associated with posttransplant employment included an age of 18 to 40 years, male sex, a college degree, Caucasian race, and pretransplant employment. Patients with alcoholic liver disease had a significantly lower rate of employment than patients with other etiologies of liver disease. The recipients who were employed after transplantation had significantly better functional status than those who were not employed. In conclusion, the employment rate after LT is low, with only one-quarter of LT recipients employed. New national and individual transplant program policies are needed to assess the root causes of unemployment in recipients who wish to work after LT.

  6. [Food habits and nutritional assessment in a university population].

    PubMed

    Cervera Burriel, Faustino; Serrano Urrea, Ramón; Vico García, Cruz; Milla Tobarra, Marta; García Meseguer, Mariá José

    2013-01-01

    Introducción: Los estudiantes universitarios se encuentran en un periodo crítico para el desarrollo de estilos de vida que tienen mucha importancia en su futura salud, ya que la influencia en el comportamiento alimentario de los compañeros, el consumo de alcohol, su situación económica y la habilidad para cocinar hacen que cambien sus hábitos de alimentación. Los pocos estudios en España sobre calidad de la dieta en este grupo de población reflejan mayoritariamente un inadecuado seguimiento del patrón mediterráneo. Objetivos: Caracterizar los hábitos alimentarios en una población de estudiantes universitarios y evaluar la calidad de su dieta. Métodos: Estudio transversal de una muestra de 80 estudiantes de la Facultad de Enfermería de Albacete (Universidad de Castilla-La Mancha). Los datos se recogieron mediante 9 recordatorios de 24 horas autoadministrados en tres periodos estacionales. El IAS y el MDS2 han sido usados como indicadores de la calidad de la dieta. En todas las pruebas el nivel de significación utilizado fue de 0,05. Resultados y discusión: La dieta de los estudiantes es ligeramente hipocalórica. La contribución de los macronutrientes a la energía total diaria la definen como hiperproteica (17%), pobre en hidratos de carbono, alrededor del 40%, casi duplica las recomendaciones de azúcares simples y es alta en grasa saturada y colesterol. La principal fuente de grasa son los alimentos cárnicos, mientras que el grupo del pescado sólo representa el 3,1%. La ingesta de cárnicos y lácteos supera ampliamente a la de poblaciones universitarias en otros países mediterráneos europeos. Más del 91% de los estudiantes se encuentra en una situación de «necesidad de cambios en la dieta» hacia patrones más saludables. La adherencia a la dieta mediterránea fue sólo del 53%.

  7. Space Radar Image of Yellowstone Park, Wyoming

    NASA Technical Reports Server (NTRS)

    1994-01-01

    indicates areas of canopy burn and mixed burn with a biomass of between 12 to 20 tons per hectare; light green is mixed burn and on-burn forest with a biomass of 20 to 35 tons per hectare; and green is non-burned forest with a biomass of greater than 35 tons per hectare. Forest recovery from the fire seems to depend on fire intensity and soil conditions. In areas of severe canopy burn and poor soil conditions, crown biomass was still low in 1994 (indicated by the brown areas at the center left), whereas in areas of mixed burn with nutrient-rich soils, seen west of Yellowstone Lake, crown biomass has increased significantly in six years (indicated by the yellow and light green areas). Imaging fire-affected regions with spaceborne radar illustrates SIR-C/X-SAR's keen abilities to monitor regrowth after a fire. Knowing the amount of carbon accumulated in the atmosphere by regenerating forest in the 20 to 50 years following a fire disturbance is also a significant factor in understanding the global carbon cycle. Measuring crown biomass is necessary to evaluate the effects of past and future fires in specific regions. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) are part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm), and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes that are caused by nature and those changes that are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche

  8. Space Radar Image of Mt. Rainer, Washington

    NASA Technical Reports Server (NTRS)

    1994-01-01

    White River, and the river leaving the mountain at the bottom right of the image (south) is the Nisqually River, which flows out of the Nisqually glacier on the mountain. The river leaving to the left of the mountain is the Carbon River, leading west and north toward heavily populated regions near Tacoma. The dark patch at the top right of the image is Bumping Lake. Other dark areas seen to the right of ridges throughout the image are radar shadow zones. Radar images can be used to study the volcanic structure and the surrounding regions with linear rock boundaries and faults. In addition, the recovery of forested lands from natural disasters and the success of reforestation programs can also be monitored. Ultimately this data may be used to study the advance and retreat of glaciers and other forces of global change. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: the L-band (24 cm), the C-band (6 cm) and the X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  9. Space Radar Image of Raco, Michigan

    NASA Technical Reports Server (NTRS)

    1994-01-01

    soil with short vegetation cover is shown by the color change from blue to green and blue. The green color corresponds to significant increases in vegetation cover and field-to-field differences in blue are the result of differences in surface roughness and soil moisture. In the forested areas, many of the conifer forests appear similar in both images (red pine forests appear red in both images). However, there is more blue and green in the September 30, 1994 image as a consequence of greater foliage and more moisture in the forest crowns. Lowland conifer forests (spruce and northern white cedars) appear as bright green in both images. Deciduous forests produce very strong radar returns at these frequencies and polarization combinations, resulting in a nearly white appearance on the images (the specific color mix is related to the local species mix). In the September 30, 1994 image, the areas of deciduous forest appear darker than in the April image because of the weaker radar signal from the foliage in the crown layer. The clear-cut areas (shown in April by the irregularly shaped dark areas in the center) change dramatically in appearance due to loss of snow cover and increases in soil moisture and vegetation cover by the end of September. SIR-C/X-SAR radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm), and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, in conjunction with aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the

  10. Space Radar Image of Death Valley in 3-D

    NASA Technical Reports Server (NTRS)

    1999-01-01

    -SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fur Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI).

  11. Space Radar Image of Yellowstone Park, Wyoming

    NASA Technical Reports Server (NTRS)

    1994-01-01

    indicates areas of canopy burn and mixed burn with a biomass of between 12 to 20 tons per hectare; light green is mixed burn and on-burn forest with a biomass of 20 to 35 tons per hectare; and green is non-burned forest with a biomass of greater than 35 tons per hectare. Forest recovery from the fire seems to depend on fire intensity and soil conditions. In areas of severe canopy burn and poor soil conditions, crown biomass was still low in 1994 (indicated by the brown areas at the center left), whereas in areas of mixed burn with nutrient-rich soils, seen west of Yellowstone Lake, crown biomass has increased significantly in six years (indicated by the yellow and light green areas). Imaging fire-affected regions with spaceborne radar illustrates SIR-C/X-SAR's keen abilities to monitor regrowth after a fire. Knowing the amount of carbon accumulated in the atmosphere by regenerating forest in the 20 to 50 years following a fire disturbance is also a significant factor in understanding the global carbon cycle. Measuring crown biomass is necessary to evaluate the effects of past and future fires in specific regions. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) are part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm), and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes that are caused by nature and those changes that are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche

  12. Mars Express scientists find a different Mars underneath the surface

    NASA Astrophysics Data System (ADS)

    2006-12-01

    kilometres in diameter that we have found with MARSIS,” said Jeffrey Plaut, MARSIS co-Principal Investigator, from the Jet Propulsion Laboratory, California, “tells us that the underlying crust in the northern lowlands must be very ancient, dating to the Early Noachian epoch (lasting from the planet's birth to about 4 thousand million years ago).” The Early Noachian was an era in which impact cratering was very intense across the Solar System. The results suggest that the crust of the northern lowlands is as old as the oldest exposed southern highlands, also dated to the Noachian epoch, and that the dichotomy between northern and southern hemispheres probably formed very early in the history of Mars. “These results are truly interesting and unprecedented,” added Giovanni Picardi. “MARSIS can contribute to understanding of the geology of Mars through analysis of the surface and subsurface morphology. In addition, from detailed analysis of the instrument’s data, we can obtain valuable information about the composition of the materials.” Note to editors The findings appear in the 14 December 2006 issue of the journal Nature, in the letter headed: “MARSIS radar sounder evidence of buried basins in the northern lowlands of Mars”, by T.R. Watters (National Air and Space Museum's Center for Earth and Planetary Studies, Washington, USA), C.J. Leuschen (Center for Remote Sensing of Ice-sheets, Univ. of Kansas, USA), J.J. Plaut, A. Safaenili and A.B. Ivanov (Jet Propulsion Laboratory, CA, USA), G. Picardi (Infocom Dept., Univ. of Rome ‘La Sapienza’, Italy), S.M. Clifford (Lunar and Planetary Institute, Texas, USA), W.M. Farrell (NASA/GSFC, Maryland, USA), R.J. Phillips (Dept. of Earth and Planetary Sciences, Washington Univ., Missouri, USA), and E.R. Stofan (Proxemy Research, Maryland, USA). The MARSIS instrument was developed in the framework of a Memorandum of Understanding between the Italian Space Agency (ASI) and NASA. It was developed by Alenia Spazio

  13. Space Radar Image of Kilauea, Hawaii in 3-D

    NASA Technical Reports Server (NTRS)

    1999-01-01

    erupted travels the 8 kilometers (5 miles) from the Pu'u O'o crater (the active vent) just outside this image to the coast through a series of lava tubes, but in the past there have been many large lava flows that have traveled this distance, destroying houses and parts of the Hawaii Volcanoes National Park. This SIR-C/X-SAR image shows two types of lava flows that are common to Hawaiian volcanoes. Pahoehoe lava flows are relatively smooth, and appear very dark blue because much of the radar energy is reflected away from the radar. In contrast other lava flows are relatively rough and bounce much of the radar energy back to the radar, making that part of the image bright blue. This radar image is valuable because it allows scientists to study an evolving lava flow field from the Pu'u O'o vent. Much of the area on the northeast side (right) of the volcano is covered with tropical rain forest, and because trees reflect a lot of the radar energy, the forest appears bright in this radar scene. The linear feature running from Kilauea Crater to the right of the image is Highway 11leading to the city of Hilo which is located just beyond the right edge of this image. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio

  14. Space Radar Image of Kilauea, Hawaii in 3-D

    NASA Technical Reports Server (NTRS)

    1999-01-01

    erupted travels the 8 kilometers (5 miles) from the Pu'u O'o crater (the active vent) just outside this image to the coast through a series of lava tubes, but in the past there have been many large lava flows that have traveled this distance, destroying houses and parts of the Hawaii Volcanoes National Park. This SIR-C/X-SAR image shows two types of lava flows that are common to Hawaiian volcanoes. Pahoehoe lava flows are relatively smooth, and appear very dark blue because much of the radar energy is reflected away from the radar. In contrast other lava flows are relatively rough and bounce much of the radar energy back to the radar, making that part of the image bright blue. This radar image is valuable because it allows scientists to study an evolving lava flow field from the Pu'u O'o vent. Much of the area on the northeast side (right) of the volcano is covered with tropical rain forest, and because trees reflect a lot of the radar energy, the forest appears bright in this radar scene. The linear feature running from Kilauea Crater to the right of the image is Highway 11leading to the city of Hilo which is located just beyond the right edge of this image. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio

  15. Space Radar Image of Mount Pinatubo Volcano, Philippines

    NASA Technical Reports Server (NTRS)

    1994-01-01

    radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  16. Space Radar Image of Prince Albert, Canada, seasonal

    NASA Technical Reports Server (NTRS)

    1994-01-01

    -C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  17. Space Radar Image of Raco, Michigan

    NASA Technical Reports Server (NTRS)

    1994-01-01

    soil with short vegetation cover is shown by the color change from blue to green and blue. The green color corresponds to significant increases in vegetation cover and field-to-field differences in blue are the result of differences in surface roughness and soil moisture. In the forested areas, many of the conifer forests appear similar in both images (red pine forests appear red in both images). However, there is more blue and green in the September 30, 1994 image as a consequence of greater foliage and more moisture in the forest crowns. Lowland conifer forests (spruce and northern white cedars) appear as bright green in both images. Deciduous forests produce very strong radar returns at these frequencies and polarization combinations, resulting in a nearly white appearance on the images (the specific color mix is related to the local species mix). In the September 30, 1994 image, the areas of deciduous forest appear darker than in the April image because of the weaker radar signal from the foliage in the crown layer. The clear-cut areas (shown in April by the irregularly shaped dark areas in the center) change dramatically in appearance due to loss of snow cover and increases in soil moisture and vegetation cover by the end of September. SIR-C/X-SAR radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm), and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, in conjunction with aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the

  18. Space Radar Image of San Rafael Glacier, Chile

    NASA Technical Reports Server (NTRS)

    1994-01-01

    means. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) are part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm), and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes that are caused by nature and those changes that are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  19. Space Radar Image of Mammoth Mountain, California

    NASA Technical Reports Server (NTRS)

    1994-01-01

    cover and alpine glaciers are critical to the radiation and water balances. SIR-C/X-SAR is a powerful tool because it is sensitive to most snowpack conditions and is less influenced by weather conditions than other remote sensing instruments, such as Landsat. In parallel with the operational SIR-C data processing, an experimental effort is being conducted to test SAR data processing using the Jet Propulsion Laboratory's massively parallel supercomputing facility, centered around the Cray Research T3D. These experiments will assess the abilities of large supercomputers to produce high throughput SAR processing in preparation for upcoming data-intensive SAR missions. The images released here were produced as part of this experimental effort. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  20. Space Radar Image of Safsaf, North Africa

    NASA Technical Reports Server (NTRS)

    1999-01-01

    ratio --or some combination of all three -- respond to the roughness of the radar backscattering surface. Using this coloring scheme, areas that appear bright at both L-band and C-band are colored yellow, while areas that appear brighter at L-band than C-band appear more blue. Detailed analysis of this scene indicates that the separate C-band and L-band images used to produce this color composite have a very similar overall appearance. This suggests that the C-band and the L-band signals are both easily penetrating the thin 1- to 12-centimeter (0.5- to 5-inch) 'average' surface cover of loose windblown sand, and are commonly 'seeing' similar interfaces just below that cover. This radar interface may be at the scattered rocky outcrops on the ground surface, but is more likely to be the shallow underlying surfaces of river gravel or bedrock, which are generally covered by only a few inches of windblown sand. Virtually everything visible on this radar composite image cannot be seen, either when standing on the ground or when viewing photographs or satellite images such as the United States' Landsat or the French SPOT satellite. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency

  1. Space Radar Image of Death Valley in 3-D

    NASA Technical Reports Server (NTRS)

    1999-01-01

    -SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche

  2. Space Radar Image of Long Valley, California -Interferometry/Topography

    NASA Technical Reports Server (NTRS)

    1994-01-01

    this area is about 1,320 meters (4,330 feet). Brightness variations come from the radar image, which has been geometrically corrected to remove radar distortions and rotated to have north toward the top. The image in the lower right is a three-dimensional perspective view of the northeast rim of the Long Valley caldera, looking toward the northwest. SIR-C C-band radar image data are draped over topographic data derived from the interferometry processing. No vertical exaggeration has been applied. Combining topographic and radar image data allows scientists to examine relationships between geologic structures and landforms, and other properties of the land cover, such as soil type, vegetation distribution and hydrologic characteristics. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.v.(DLR), the major partner in science, operations and data processing of X-SAR.

  3. Space Radar Image of Weddell Sea, Antarctica

    NASA Technical Reports Server (NTRS)

    1994-01-01

    . Oceanographers believe this process forms most of the oceans' deep water. Sea ice covering all of the southern oceans, including the Weddell Sea, typically reaches its most northerly extent in about September. As periods of daylight become gradually longer in the Southern Hemisphere, ice formation stops and the ice edge retreats southward. By February, most of the sea ice surrounding Antarctica disappears. Imaging radar is extremely useful for studying the polar regions because of the long periods of darkness and extensive cloud cover. The multiple frequencies of the SIR-C/X-SAR instruments allow further study into ways of improving the separation of the various thickness ranges of sea ice, which are vital to understanding the heat balance in the ice, ocean and atmospheric system. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  4. Space Radar Image of Bahia

    NASA Technical Reports Server (NTRS)

    1994-01-01

    . The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI) with the Deutsche Forschungsanstalt fuer luft und Raumfahrt e.V.(DLR), the major partner in science, operations and data processing of X-SAR.

  5. Space Radar Image of Safsaf, North Africa

    NASA Technical Reports Server (NTRS)

    1999-01-01

    ratio --or some combination of all three -- respond to the roughness of the radar backscattering surface. Using this coloring scheme, areas that appear bright at both L-band and C-band are colored yellow, while areas that appear brighter at L-band than C-band appear more blue. Detailed analysis of this scene indicates that the separate C-band and L-band images used to produce this color composite have a very similar overall appearance. This suggests that the C-band and the L-band signals are both easily penetrating the thin 1- to 12-centimeter (0.5- to 5-inch) 'average' surface cover of loose windblown sand, and are commonly 'seeing' similar interfaces just below that cover. This radar interface may be at the scattered rocky outcrops on the ground surface, but is more likely to be the shallow underlying surfaces of river gravel or bedrock, which are generally covered by only a few inches of windblown sand. Virtually everything visible on this radar composite image cannot be seen, either when standing on the ground or when viewing photographs or satellite images such as the United States' Landsat or the French SPOT satellite. Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency

  6. [In Process Citation].

    PubMed

    Aguilar Cordero, María José; Rodríguez Blanquet, Raquel; Sánchez García, Juan Carlos; Sánchez López, Antonio Manuel; Baena García, Laura; López Contreras, Gracia

    2016-02-16

    Introducción: el entrenamiento mediante ejercicio físico moderado durante el periodo de gestación aporta beneficios tanto a la mujer embarazada como al feto. Los trabajos de investigación consultados vinculan la actividad física con una reducción del número de cesáreas, de partos instrumentados y con un parto más fisiológico. Previene igualmente la ganancia excesiva de peso de la mujer, disminuye el riesgo de diabetes gestacional y de hipertensión arterial.Objetivo: el objetivo de esta investigación es conocer si un programa de ejercicio físico de carácter moderado con el método Study Water Exercise Pregnant (SWEP), realizado en un medio acuático, contribuye a obtener unos resultados más favorables en la etapa perinatal, tanto para la mujer como para el bebé.Material y métodos: el diseño que se llevará a cabo es un ensayo clínico aleatorizado. La muestra estará constituida por 364 gestantes, obtenida de un universo total de 6.579 partos acontecidos en Granada (España) durante el año 2014. Dicha muestra se ha dividido en dos grupos, uno de intervención y otro de control. La actividad se realizará en las instalaciones deportivas acuáticas de la Facultad de Ciencias del Deporte de la Universidad de Granada, que cuentan con dos vasos adecuados a nuestros objetivos, uno polivalente de 25 metros y otro de enseñanza de 12,5 metros.  Resultados: el programa de ejercicios diseñado específicamente para el proyecto denominado SWEP, abarca desde la 20 hasta la 37 semana de gestación (SG) y consta de tres sesiones semanales, con una duración de 60 minutos cada una. Las sesiones incluirán tres fases: fase de calentamiento, fase principal en la que el ejercicio se divide en una parte aeróbica y otra de ejercicios de fuerza y resistencia y una final con estiramientos y relajación. Las variables que se van a estudiar son las siguientes: a) maternas: peso, IMC, tensión arterial, test de O´Sullivan, aparición de depresión postparto

  7. PREVALENCE OF METABOLIC SYNDROME IN YOUNG MEXICANS: A SENSITIVITY ANALYSIS ON ITS COMPONENTS.

    PubMed

    Murguía-Romero, Miguel; Jiménez-Flores, J Rafael; Sigrist-Flores, Santiago C; Tapia-Pancardo, Diana C; Jiménez-Ramos, Arnulfo; Méndez-Cruz, A René; Villalobos-Molina, Rafael

    2015-07-28

    Introducción: la obesidad es una epidemia mundial y la alta prevalencia de diabetes tipo II (DM2) y de enfermedad cardiovascular (ECV) es, en gran parte, consecuencia de esta epidemia. El síndrome metabólico (SMet) es una herramienta útil para estimar el riesgo de que una población de jóvenes evolucione a DM2 y ECV. Objetivo: estimar la prevalencia del SMet en jóvenes mexicanos, y evaluar cada parámetro como un indicador independiente mediante análisis de sensibilidad. Métodos: se estimó la prevalencia del SMet en 6.063 jóvenes del área metropolitana de Ciudad de México. Se realizó un análisis de sensibilidad para estimar la eficiencia de cada uno de los componentes del SMet como un indicador de la presencia del mismo SMet. Se calcularon cinco estadísticos del análisis de sensibilidad para cada uno de los componentes del SMet y otros parámetros, incluidos: sensibilidad, especificidad, valor predictivo positivo, valor predictivo negativo y precisión. Resultados: la prevalencia del SMet en la población de jóvenes mexicanos se estimó en 13.4%. La circunferencia de la cintura presentó la sensibilidad más alta (96.8% mujeres; 90.0% hombres); en las mujeres, la presión arterial presentó la más alta especificidad (97.7%) y en los hombres la glucosa (91.0%). Cuando se consideran los cinco estadísticos, los triglicéridos son el componente con los valores más altos, con valores del 75% o mayores para cuatro de estos. En los jóvenes sin alteraciones se detecta diferencia entre sexos para los promedios de todos los componentes del SMet. Conclusiones: los jóvenes mexicanos son altamente propensos a adquirir SMet: el 71% tiene cuando menos uno y hasta cinco parámetros del SMet alterados, y el 13.4% de ellos tiene SMet. De los cinco componentes del SMet, la circunferencia de la cintura presentó la más alta sensibilidad como predictor del SMet, y los triglicéridos es el mejor parámetro predictor en jóvenes mexicanos si solo se considera un

  8. [FIXING DEVICE FOR CLOSING AND COUPLING AN INTRAVENOUS CATHETER].

    PubMed

    Soriano, Enrique; García, Jesús M; Blaya, Fernando; Islán, Manuel E; Gallego, Luis Tomás; Franco-López, Ángeles; García de Lorenzo, Abelardo

    2015-09-01

    Introducción: los medios de fijación a la piel de un catéter venoso periférico, de un catéter venoso central o de un catéter arterial central presentan los siguientes graves inconvenientes: ser la sede de infecciones a nivel del lugar de la punción, provocar una saturación de la zona anatómica, la cual resulta muy difícil de soportar e incómodo para el paciente portador, y suponer un riesgo para el personal de enfermería cuando se usan hilos de sutura para fijar el soporte del catéter. Objetivo: por lo anteriormente expuesto, se ha detectado la necesidad de diseñar un dispositivo que reduzca la complejidad y aparatosidad de los sistemas conocidos y empleados en la actualidad, favoreciendo la asepsia y la movilidad del paciente. Método: el desarrollo presentado en este artículo se refiere a un sistema mecánico de fijación, cierre y acoplamiento para catéter de perfusión intravenosa. El sistema dispone de una pieza circular de pequeño espesor con al menos dos orificios para su fijación subcutánea, centralmente de uno o más conductos para acoplar lúmenes, y de una parte cilíndrica hueca que sobresale a uno de los lados, exteriormente roscada e interiormente lisa con un tetón de posición. Para uso domiciliario se dispone de un tapón de estanqueidad con uno o más tubos de pequeño diámetro que se acoplan en los orificios para lúmenes, una ranura de posición, un tirador y un tapón roscado ciego para el cierre hermético con la parte roscada. Para uso hospitalario se dispone de un tapón intermedio con una o más entradas para lúmenes, así como de un tapón roscado hueco que permite su acoplamiento hermético con la parte roscada. Resultados: el desarrollo descrito en este artículo va a ser utilizado en dos ambientes: ambiente domiciliario y ambiente hospitalario. Además, reduce el riesgo de infección y saturación de la zona anatómica de los pacientes en los que se realiza la punción cutánea en la que se fijan catéteres venosos

  9. [In Process Citation].

    PubMed

    Aguilar Cordero, María José; Rodríguez Blanquet, Raquel; Sánchez García, Juan Carlos; Sánchez López, Antonio Manuel; Baena García, Laura; López Contreras, Gracia

    2016-01-01

    Introducción: el entrenamiento mediante ejercicio físico moderado durante el periodo de gestación aporta beneficios tanto a la mujer embarazada como al feto. Los trabajos de investigación consultados vinculan la actividad física con una reducción del número de cesáreas, de partos instrumentados y con un parto más fisiológico. Previene igualmente la ganancia excesiva de peso de la mujer, disminuye el riesgo de diabetes gestacional y de hipertensión arterial.Objetivo: el objetivo de esta investigación es conocer si un programa de ejercicio físico de carácter moderado con el método Study Water Exercise Pregnant (SWEP), realizado en un medio acuático, contribuye a obtener unos resultados más favorables en la etapa perinatal, tanto para la mujer como para el bebé.Material y métodos: el diseño que se llevará a cabo es un ensayo clínico aleatorizado. La muestra estará constituida por 364 gestantes, obtenida de un universo total de 6.579 partos acontecidos en Granada (España) durante el año 2014. Dicha muestra se ha dividido en dos grupos, uno de intervención y otro de control. La actividad se realizará en las instalaciones deportivas acuáticas de la Facultad de Ciencias del Deporte de la Universidad de Granada, que cuentan con dos vasos adecuados a nuestros objetivos, uno polivalente de 25 metros y otro de enseñanza de 12,5 metros.  Resultados: el programa de ejercicios diseñado específicamente para el proyecto denominado SWEP, abarca desde la 20 hasta la 37 semana de gestación (SG) y consta de tres sesiones semanales, con una duración de 60 minutos cada una. Las sesiones incluirán tres fases: fase de calentamiento, fase principal en la que el ejercicio se divide en una parte aeróbica y otra de ejercicios de fuerza y resistencia y una final con estiramientos y relajación. Las variables que se van a estudiar son las siguientes: a) maternas: peso, IMC, tensión arterial, test de O´Sullivan, aparición de depresión postparto

  10. [Evaluation of two closed-system drug transfer device in the antineoplastic drug elaboration process].

    PubMed

    Gómez-Álvarez, Sandra; Porta-Oltra, Begoña; Hernandez-Griso, Marta; Pérez-Labaña, Francisca; Climente-Martí, Mónica

    2016-01-01

    Objetivo: evaluar el impacto del uso de dos sistemas cerrados sobre el proceso de preparación de quimioterapia parenteral, con respecto al sistema estándar, en términos de contaminación local y ambiental, y tiempos de preparación. Método: estudio observacional prospectivo. Se compararon dos proveedores distintos de sistemas cerrados, Icu Medical® y Care Fusion®, frente al sistema estándar de preparación de quimioterapia parenteral. Quince enfermeros del Servicio de Farmacia elaboraron cada uno de ellos 5 preparaciones, una siguiendo el procedimiento estándar y cuatro usando los sistemas cerrados. Para evaluar la aparición de contaminación se elaboró una solución de fluoresceína al 0,5%. Se evaluaron dos tipos de contaminación: local (en tres puntos: sistema acoplado a vial, jeringa y envase final) y ambiental (guantes y mesa de trabajo), obteniéndose el porcentaje de preparaciones contaminadas en cada uno de ellos. Se registró el tiempo empleado por cada enfermero en cada una de las preparaciones. Resultados: se elaboraron 75 preparaciones. Se produjo una reducción global de la contaminación local para los SC Icu Medical® y Care Fusion® del 24% y 74%, respectivamente. En el sistema cerrado Care Fusion® la contaminación local fue significativamente menor que en el sistema estándar en vial, jeringa y envase final; mientras que en el sistema cerrado Icu Medical® solo fue significativamente menor en la conexión al vial. Se produjo un incremento significativo del tiempo de preparación con la utilización de sistemas cerrados de los entre 23,4 y 30,5 segundos. Conclusiones: ambos sistemas cerrados han mostrado un beneficio con respecto a la utilización del sistema estándar. Sin embargo, se han visto incrementados significativamente los tiempos de preparación con ambos sistemas.

  11. [In Process Citation].

    PubMed

    Muros, José Joaquín; Cofre-Bolados, Cristian; Zurita-Ortega, Félix; Castro-Sánchez, Manuel; Linares-Manrique, Marta; Chacón-Cuberos, Ramón

    2016-03-25

    Introducción: la sociedad actual está experimentando reducciones significativas en los niveles de actividad física, y estos niveles de sedentarismo están asociados a un aumento de la obesidad. Objetivo: describir y analizar las relaciones entre composición corporal, realización de actividad física y condición física, además de describir los índices de sobrepeso/obesidad de una muestra de escolares de la provincia de Santiago (Chile). Material y métodos: se diseñó un estudio transversal con una muestra representativa de 515 alumnos (10,6 ± 0,5). Se determinaron diferentes índices antropométricos (IMC y porcentaje graso), así como la actividad física y la condición física (capacidad aeróbica y fuerza muscular máxima en tren superior e inferior). Resultados: alrededor del 55% de la muestra estudiada presentó problemas de sobrepeso/obesidad. Los valores de volumen de oxígeno máximo (VO 2 máx) y fuerza del tren superior fueron estadísticamente superiores en el grupo de los niños que en el de las niñas. Los alumnos clasificados como obesos presentaron unos niveles superiores de porcentaje graso, así como unos niveles inferiores de actividad física y de condición física que el grupo con normopeso. Se encontró una correlación negativa entre las puntuaciones del PAQ-C (Physical Activity Questionnaire for Older Children) y los parámetros antropométricos, así como entre los parámetros antropométricos y los valores obtenidos en todas las pruebas de condición física. Conclusión: ante los alarmantes niveles de sobrepeso y obesidad infantil detectados en Santiago parece de importante relevancia crear planes de intervención centrados en la mejora de la condición física; los grupos con problemas de sobrepeso y obesidad y los grupos de sexo femeninos donde se debería hacer una mayor incidencia.

  12. Invertebrate fauna associated with Torpedograss, Panicum repens (Cyperales: Poaceae), in Lake Okeechobee, Florida, and prospects for biological control

    SciTech Connect

    Cuda, J.P.; Dunford, J.C.; Leavengood, J.M. Jr.

    2007-03-15

    realizado como parte de un estudio de factibilidad para determinar si conota es una candidata apropiada para un programa de control biologico clasico. En general, especimenes de aproximadamente unos 4,000 artropodos y unos 400 nematodos fueron recolectados. Muestras recolectadas pasando una red sobre vegetacion mezclada, cortando la vegetacion y tomando centros del suelo fueron dominados por representantes de artropodos de los ordenes de Hemiptera, Hymenoptera, Diptera, y Acari. Nematodos en el genero Pratylenchus, que causan lesiones sobre tejido, fueron asociados regularmente con las raices de conota. Ninguno de los organismos recolectados eran especialistas sobre conota. Aunque el control biologico clasico de la conota es factible basado sobre la magnitud de la infestacion, las perdidas economicas, la resistencia hacia los metodos de control convencionales y el informe en la India de un posible enemigo natural especifico a esta planta, la posicion botanica de este pasto maleza requiere una evaluacion de riesgo economico formal antes de continuar con un programa de control biologico clasico. (author)

  13. The Corrected Donor Age for Hepatitis C virus Infected Liver Transplant Recipients

    PubMed Central

    Dirchwolf, Melisa; Dodge, Jennifer L.; Gralla, Jane; Bambha, Kiran M.; Nydam, Trevor; Hung, Kenneth W.; Rosen, Hugo R.; Feng, Sandy; Terrault, Norah A.; Biggins, Scott W.

    2016-01-01

    Donor age has become the dominant donor factor used to predict graft failure (GF) after liver transplantation (LT) in HCV recipients. AIM To develop and validate a model of Corrected Donor Age (CDA) for HCV LT recipients that transforms the risk of other donor factors into the scale of donor age. METHODS We analyzed all first LT recipients with HCV in the UNOS registry from 1/1998–12/2007 (development cohort, n=14,538) and 1/2008–12/2011 (validation cohort, n=7,502) using Cox regression, excluding early GF (<90 days from LT). Accuracy in predicting 1yr GF (death or Re-LT) was assessed with the net reclassification index (NRI). RESULTS In the development cohort, controlling for pre-LT recipient factors and geo-temporal trends (UNOS region, LT year), the following donor factors were independent predictors of GF (Hazard Ratio); all p<0.05; donor age (1.02/yr), circulatory death (DCD) (1.31), diabetes (1.23), height<160cm (1.13), AST>120 U/L (1.10), female (0.94), cold ischemia time (CIT) (1.02/hr), donor non-AA : recipient AA (1.65). Transforming these risk factors into the donor age scale yielded the following: DCD=+16yrs, diabetes=+12yrs, height<160cm=+7yrs, AST >120 U/L=+5yrs, female=−4yrs, CIT=+1yr/hr>8hrs and −1yr/hr<8 hrs. There was a large effect of donor-recipient race combinations; +29yrs for donor non-AA : recipient AA but only +5yrs for donor AA : recipient AA, and −2yrs for donor AA : recipient non-AA. In a validation cohort, CDA better classified risk of 1yr GF versus actual age (NRI 4.9%, p=0.009) and versus the donor risk index (9.0%, p<0.001). CONCLUSIONS The CDA, compared to actual donor age, provides an intuitive and superior estimation of graft quality for HCV-positive LT recipients since it incorporates additional factors that impact LT GF rates. PMID:26074140

  14. [TRIGLYCERIDE LEVELS AS A RISK FACTOR DURING PREGNANCY; BIOLOGICAL MODELING; SYSTEMATIC REVIEW].

    PubMed

    Aguilar Cordero, María José; Baena García, Laura; Sánchez López, Antonio Manuel; Guisado Barrilao, Rafael; Hermoso Rodríguez, Enrique; Mur Villar, Norma; Capel Tuñón, Manuel

    2015-08-01

    Introducción: algunas de las patologías que se pueden presentar en el embarazo (diabetes gestacional, hipertensión y preeclampsia) se están relacionando con un aumento del riesgo de padecer enfermedades cardiovasculares a lo largo de la vida. Esto se debe tener en cuenta en las futuras valoraciones de la salud de las mujeres. Uno de los biomarcadores más importantes en las enfermedades cardiovasculares es el nivel de triglicéridos, que experimenta un importante cambio durante la gestación. Objetivo: el objetivo de esta revisión es analizar los estudios que han investigado los niveles de triglicéridos durante el embarazo como factor de riesgo cardiovascular en las últimas semanas de gestación y en el parto. Métodos: se ha efectuado una búsqueda sistemática y se seleccionaron 14 artículos específicos sobre el tema, siguiendo las directrices PRISMA. Resultados: en el embarazo normal tiene lugar un descenso del nivel de lípidos en las primeras semanas, seguido de un aumento progresivo, especialmente notable a partir de la semana 12 de gestación. Este incremento de las concentraciones plasmáticas de lípidos circulantes se produce de forma lineal, hasta alcanzar un pico máximo unos días antes del parto. Esta subida se debe al aumento de los niveles de estrógenos y a la resistencia a la insulina. También se ha relacionado con los niveles de prolactina. Conclusiones: a través de la presente revisión se ha podido constatar la relación del aumento de los triglicéridos en algunas de las patologías o alteraciones más frecuentes en los embarazos de riesgo, en las que se produce una elevación significativamente mayor que en los embarazos normales. Es en este contexto en el que el modelado biológico puede cobrar una relevancia especial, facilitando la creación de modelos y curvas de percentiles aplicables a la población, y que permitan un seguimiento de los cambios en la trigliceridemia, que acaben señalando aquellas situaciones que pasan a ser

  15. [PSYCHOMETRIC PROPERTIES OF A SPANISH ADAPTATION OF THE WEIGHT BIAS INTERNALIZATION SCALE (WBIS)].

    PubMed

    Sarrías-Gómez, Susana; Baile, José Ignacio

    2015-10-01

    Introducción: la obesidad es uno de los problemas de salud más importantes en la actualidad a nivel internacional, y el estudio de los diferentes aspectos relacionados con ella se ha convertido en un objetivo prioritario. Uno de dichos aspectos es el análisis de la interiorización de prejuicios sobre la obesidad, especialmente su evaluación, para lo cual se han diseñado diferentes instrumentos, no disponibles para la población española. Objetivos: el objetivo de este estudio es la traducción y adaptación de la Escala de Interiorización de Prejuicios sobre Obesidad (WBIS), analizando sus características psicométricas. Métodos: cincuenta y nueve personas fueron evaluadas mediante una adaptación española del WBIS, el Inventario de Depresión de Beck (BDI) en versión breve, y el Cuestionario de Salud General de Goldberg (GHQ-28). Se exploró la consistencia interna, así como la validez concurrente y de constructo del instrumento adaptado. Resultados: el coeficiente alfa de Cronbach fue de .89, mientras que la validez concurrente evidenció correlaciones estadísticamente significativas con la puntuación global del GHQ-28 (r = .39, p < .02) y del BDI (r = .42, p < .001). La escala definitiva estaba compuesta por 11 ítems, que se agruparon en dos factores principales, que permitieron explicar significativamente el 65.03% de la varianza. Conclusiones: la versión adaptada al español del WBIS muestra adecuados valores psicométricos de fiabilidad y validez, por lo que podría ser una buena escala para la evaluación de la interiorización de los prejuicios sobre obesidad, lo que podría confirmarse en estudios más amplios.

  16. Projected outcomes of 6-month delay in exception points versus an equivalent Model for End-Stage Liver Disease score for hepatocellular carcinoma liver transplant candidates.

    PubMed

    Alver, Sarah K; Lorenz, Douglas J; Marvin, Michael R; Brock, Guy N

    2016-10-01

    The United Network for Organ Sharing (UNOS) recently implemented a 6-month delay before granting exception points to liver transplantation candidates with hepatocellular carcinoma (HCC) to address disparity in transplantation access between HCC and non-HCC patients. An HCC-specific scoring scheme, the Model for End-Stage Liver Disease equivalent (MELDEQ ), has also been developed. We compared projected dropout and transplant probabilities and posttransplant survival for HCC and non-HCC patients under the 6-month delay and the MELDEQ using UNOS data from October 1, 2009, to June 30, 2014, and multistate modeling. Overall (combined HCC and non-HCC) wait-list dropout was similar under both schemes and slightly improved (though not statistically significant) compared to actual data. Projected HCC wait-list dropout was similar between the MELDEQ and 6-month delay at 6 months but thereafter started to differ, with the 6-month delay eventually favoring HCC patients (3-year dropout 10.0% [9.0%-11.0%] for HCC versus 14.1% [13.6%-14.6%]) for non-HCC) and the MELDEQ favoring non-HCC patients (3-year dropout 16.0% [13.2%-18.8%] for HCC versus 12.3% [11.9%-12.7%] for non-HCC). Projected transplant probabilities for HCC patients were substantially lower under the MELDEQ compared to the 6-month delay (26.6% versus 83.8% by 3 years, respectively). Projected HCC posttransplant survival under the 6-month delay was similar to actual, but slightly worse under the MELDEQ (2-year survival 82.9% [81.7%-84.2%] versus actual of 85.5% [84.3%-86.7%]). In conclusion, although the 6-month delay improves equity in transplant and dropout between HCC and non-HCC candidates, disparity between the 2 groups may still exist after 6 months of wait-list time. Projections under the MELDEQ , however, appear to disadvantage HCC patients. Therefore, modification to the exception point progression or refinement of an HCC prioritization score may be warranted. Liver Transplantation 22 1343-1355 2016 AASLD.

  17. The corrected donor age for hepatitis C virus-infected liver transplant recipients.

    PubMed

    Dirchwolf, Melisa; Dodge, Jennifer L; Gralla, Jane; Bambha, Kiran M; Nydam, Trevor; Hung, Kenneth W; Rosen, Hugo R; Feng, Sandy; Terrault, Norah A; Biggins, Scott W

    2015-08-01

    Donor age has become the dominant donor factor used to predict graft failure (GF) after liver transplantation (LT) in hepatitis C virus (HCV) recipients. The purpose of this study was to develop and validate a model of corrected donor age (CDA) for HCV LT recipients that transforms the risk of other donor factors into the scale of donor age. We analyzed all first LT recipients with HCV in the United Network for Organ Sharing (UNOS) registry from January 1998 to December 2007 (development cohort, n = 14,538) and January 2008 to December 2011 (validation cohort, n = 7502) using Cox regression, excluding early GF (<90 days from LT). Accuracy in predicting 1 year GF (death or repeat LT) was assessed with the net reclassification index (NRI). In the development cohort, after controlling for pre-LT recipient factors and geotemporal trends (UNOS region, LT year), the following donor factors were independent predictors of GF, all P < 0.05: donor age (hazard ratio [HR], 1.02/year), donation after cardiac death (DCD; HR, 1.31), diabetes (HR, 1.23), height < 160 cm (HR, 1.13), aspartate aminotransferase (AST) ≥ 120 U/L (HR, 1.10), female (HR, 0.94), cold ischemia time (CIT; HR, 1.02/hour), and non-African American (non-AA) donor-African American (AA) recipient (HR, 1.65). Transforming these risk factors into the donor age scale yielded the following: DCD = +16 years; diabetes = +12 years; height < 160 cm = +7 years; AST ≥ 120 U/L = +5 years; female = -4 years; and CIT = +1 year/hour > 8 hours and -1 year/hour < 8 hours. There was a large effect of donor-recipient race combinations: +29 years for non-AA donor and an AA recipient but only +5 years for an AA donor and an AA recipient, and -2 years for an AA donor and a non-AA recipient. In a validation cohort, CDA better classified risk of 1-year GF versus actual age (NRI, 4.9%; P = 0.009) and versus the donor risk index (9.0%, P < 0.001). The CDA, compared

  18. [Influence of body composition and acceptance of physical education classes on self-esteem of children aged 14-16 years from Alicante, Spain].

    PubMed

    Estévez, Manuel; Muros, José Joaquín; Torres, Beatriz; Pradas, Francisco; Zurita, Félix; Cepero, Mar

    2015-04-01

    Introducción: La autoestima parece ser un importante predictor de síntomas depresivos entre los jóvenes, y sobre todo en el género femenino. Algunos autores sugieren que la existencia de sobrepeso y/o obesidad en jóvenes se relaciona con una menor autoestima así como la participación deportiva se ha asociado con unos valores más altos de la misma. Objetivos: Analizar las relaciones existentes entre el índice de masa corporal, sexo, aceptación a las clases de Educación Física y autoestima en una muestra representativa de escolares de 3º y 4º de Educación Secundaria Obligatoria de la ciudad de Alicante. Métodos: El estudio se llevó a cabo sobre una muestra representativa compuesta por 1.150 alumnos escolarizados en la ciudad de Alicante. Se obtuvieron datos sociodemográficos, antropométricos, valores de autoestima y de aceptación por las clases de educación física. Resultados: Existe una correlación positiva entre la aceptación a las clases de educación física y el autoestima (r= ,319) y una correlación negativa entre esta y el sexo de los alumnos (r= -,289), siendo el grupo femenino el que muestra unas menores puntuaciones. Existe una correlación negativa entre el autoestima y los valores de índice de masa corporal (r= -,083), y el sexo (r= -,308), siendo el grupo femenino el que muestra unos valores menores de autoestima. Conclusiones: En vista de los resultados se hace necesario planificar actuaciones encaminadas a reforzar y aumentar la autoestima durante la adolescencia, centrándose en los grupos de riesgo formados por los jóvenes con sobrepeso/obesidad y sobre por el grupo de las chicas.

  19. La implantacion del enfoque constructivista en el aula de ciencia: Estudio de caso multiple

    NASA Astrophysics Data System (ADS)

    Arroyo Betancourt, Luz I.

    participantes basado en lo que estas manifestaron en su practica didactica. Dos maestras coinciden en una vision constructivista social de la construccion del conocimiento, del aprendizaje y de los metodos didacticos. La otra manifesto una vision constructivista piagetiana en el aprendizaje, los metodos didacticos y en la construccion del conocimiento. Se espera que este trabajo, ademas de promover los estudios de caso sobre el enfoque constructivista de ensenanza en el contexto puertorriqueno, sirva para que los maestros, que estan transformando su enfoque educativo de uno tradicional a uno constructivista, tengan una vision mas clara de la implantacion de este enfoque. Se espera ademas que sirva para que el Departamento de Educacion y sus programas de adiestramiento y readiestramiento en servicio, asi como las universidades y sus programas de preparacion de maestros, tomen en cuenta los resultados y recomendaciones de este estudio al revisar sus programas.

  20. Estudio teórico de la distribución catiónica en la capa octaédrica de silicatos laminares

    NASA Astrophysics Data System (ADS)

    Hernández-Laguna, A.

    Los silicatos laminares son unos minerales de gran extensión en la corteza de nuestro y otros planetas, y se ha detectado su presencia en masas de partículas de polvo interplanatario. Están formados por láminas estructuradas en una capa tetraedros de sílice y una de octaédros de oxihidroxido de aluminio. Según el número de capas y la disposición aparecen distintos minerales. Además, también pueden aparecer distintos minerales como consecuencia de la substitución isomórfica de cationes en la capas, en particular, Al(III) por Si en la capa tetraédrica y Fe(III) y/o Mg(II) por Al(III) en la octaédrica. Cuando el catión substituyente presenta un estado de oxidación más bajo que al que substituye genera carga negativa que tiene que neutralizarse con cationes que se disponen en el espacio interlaminar. En este trabajo vamos a estudiar, mediante distintos métodos computacionales, las distribuciones de dichos cationes de substitución en la capa octaédrica de silicatos laminares 2:1 (dos capas tetraédricas y en medio una octaédrica), en particular, en los minerales esmectitas e ilitas. En primer lugar, estudiaremos la distribución de dichos cationes en la capa octaédrica en un modelo de gas reticular por el método de Monte Carlo, minimizando el número de pares de cationes Al, Fe y Mg de nuestro modelo con respecto a los procedentes de resultados espectroscópicos de muestras de minerales. Posteriormente, y mediante un modelo de potenciales empíricos, estudiamos la energética de las distribuciones binarias en dichos minerales, generando unos potenciales de interacción intercambio a dos y tres cationes (extrapolables a cualquier filosilicato) que son la base para una investigación Monte Carlo-"simulated-annealing" en la que se encuentran las transiciones de fase y las estructuras ordenadas, dependiendo dichas estructuras y la temperatura de cambio de fase de la de la naturaleza y concentración de los cationes de substitución. También se han

  1. Revision curricular a partir de un analisis comparativo de las discrepancias en los curriculos de una escuela de optometria en Puerto Rico con las competencias requeridas para las agencias de revalida y acreditacion 2004

    NASA Astrophysics Data System (ADS)

    Rivera Pacheco, Andres

    El proposito de esta investigacion, un estudio cualitativo de caso, fue comparar y contrastar el curriculo vigente de la Escuela de Optometria de la UIAPR con las competencias y estandares requeridos por las agencias de acreditacion y de revalida. Con este proposito, decidimos realizar una revision y un analisis de documentos: el prontuario de cada uno de los cursos de los curriculos implantados en el 1993 y en el 2001; las competencias y estandares establecidos por las agencias de revalida y de acreditacion; y las estadisticas en las que se analiza el porcentaje de estudiantes que aprueban cada una de las partes de los examenes de revalida entre el 1998 al 2003. Se realizaron entrevistas dirigidas para dar apoyo y complementar la revision y el analisis de estos documentos. Los participantes de las entrevistas fueron tres estudiantes de la clase de optometria del 2004 (ultima clase del curriculo del 1993); tres estudiantes de la clase de optometria del 2005 (primera clase graduanda del curriculo vigente) y tres profesores y/o directores de los Departamentos de Ciencias Basicas, Ciencias Clinicas y Cuidado al Paciente. Esta investigacion se enmarco en el modelo de evaluacion curricular de discrepancia de Malcolm Provus y en el modelo de desarrollo basado en competencias. Uno de los hallazgos mas importantes del estudio es que los cambios que se implantaron al curriculo del 2001 no han logrado que los estudiantes mejoren su ejecucion en los examenes de revalida. Por otro lado, se encontro que el curriculo vigente atiende completamente los estandares de la practica de Optometria, pero no las competencias. Esta informacion fue validada mediante el uso de una tabla de cotejo para el analisis de los cursos y de la informacion obtenida de las entrevistas. El estudio determina y concluye que existen discrepancias entre los prontuarios de los cursos del curriculo y las competencias requeridas por la agencia de revalida. Segundo, que el Departamento de Ciencias Basicas es el

  2. Calorimetria nucleare in collisioni tra ioni pesanti ad energie intermedie

    NASA Astrophysics Data System (ADS)

    Spezzi, L.

    2002-07-01

    Nel presente lavoro di tesi ci si e' occupati di uno studio sistematico di misure di temperatura ed energia di eccitazione in sistemi nucleari formati in reazioni tra ioni pesanti ad energie intermedie. La temperatura a stata misurata tramite due diversi metodi: rapporto tra le rese di isotopi che differiscono di uno stesso numero di nucleoni ( d/t-3He/4He , 3He/4He -6Li/7Li) - temperatura isotopica -, e rapporto tra le popolazioni degli stati eccitati in frammenti instabili (5Li e 6Li) che decadono in particelle leggere in coincidenza - temperatura di emissione. Le misure in esame sono state effettuate presso i Laboratori Nazionali del Sud per i sistemi 93Nb+93Nb, 93Nb+116,124Sn, 116,120Sn+116,124Sn e 116Sn+93Nb ad energie comprese tra 17 e 40 A MeV. L'apparato di rivelazione era costituito da un odoscopio ad alta granularite (96 telescopi Si (50micron)-Si(300micron)-CsI(Tl) ) e basse soglie di rivelazione, utilizzato sia per identificare risonanze in frammenti eccitati che per misure di rese di isotopi di frammenti con 2<=Z<=6, e dal multirivelatore FIASCO che, grazie alla misura contemporanea di posizione e tempo di volo dei frammenti provenienti dal proiettile (PLF - Projectile Like Fragments) e dal bersaglio (TLF - Target Like Fragment), e' stato utilizzato per misurare direttamente l'energia di eccitazione del sistema in studio. Analisi precedenti, condotte nell'ambito di varie collaborazioni, hanno messo in evidenza la possible esistenza di una transizione di fase liquido-gas del primo ordine nella materia nucleare. In tale contesto, ci siamo occupati di una verifica della curva calorica nucleare, ovvero della correlazione esistente fra temperatura ed energia di eccitazione del sistema, indagando, nel contempo, sulla sua dipendenza dalla massa del sistema che si frammenta. Si e' effettuato, inoltre, un confronto fra i due diversi metodi di misura della temperatura (temperatura isotopica e di emissione): l'andamento plateau-like della curva calorica e' stato

  3. Modifiable environmental obesity risk factors among elementary school children in a Mexico-us border city.

    PubMed

    López-Barrón, Rita Gabriela; Jiménez-Cruz, Arturo; Bacardí-Gascón, Montserrat

    2015-05-01

    Antecedentes: El aumento de la prevalencia de sobrepeso (SP) y la obesidad (OB) en niños mexicanos, hace necesario la valoración de los factores de riesgo ambientales. Objetivo: Valorar si existe asociación entre la disponibilidad de alimentos en el entorno de los niños y el consume de alimentos con el puntaje Z de IMC y la circunferencia de cintura (CC). Métodos: Participaron en el estudio 684, 264 padres, 22 maestros, el personal de cafetería de las escuelas, y vendedores ambulantes. Se valoró el peso, la estatura la CC, de niños de quinto año de educación básica. Se aplicaron a los padres, niños y maestros un cuestionario de frecuencia de consumo de alimentos, uno de actividad física y uno de hábitos alimentarios. Un inventario de alimentos se aplicó a los padres, al personal de la cafetería de la escuela, a los vendedores y a las tiendas cercanas a las escuelas. Resultados: La media de edad de los niños fue 10.5 años. 28% de los niños tenían SP, 26% OB, y 25% obesidad abdominal (OA). Se observó una correlación positiva entre el consumo de alimentos densamente energéticos (ADE), frutas, y verduras con la disponibilidad en casa y con el consumo semanal. También se observó una correlación entre el consumo de refrescos y otras ADE. El factor que más contribuía al consumo de alimentos fue la disponibilidad en casa y en la escuela (R2 = 0.11, p = 0.0001). Se observó una asociación positiva entre el tiempo que los niños ven televisión con el de sus padres. Por cada hora de aumento (de 0 a 7) de ver televisión al día, los niños tenían más posibilidades de tener SP o OB (OR=1.22 95% CI 1.02-1.45, p=0.026). Conclusión: La disponibilidad de ADE, de frutas y verduras en o fuera de casa o de la escuela, además de las horas de ver televisión estuvieron positivamente asociadas con la obesidad.

  4. Evaluation of factors affecting plate waste of inpatients in different healthcare settings.

    PubMed

    Valero Díaz, Antonio; Caracuel García, Angel

    2013-01-01

    Introducción/objetivos: La satisfacción de los pacientes con el servicio de comidas continúa siendo uno de los principales retos dirigidos a la modernización de los sistemas de distribución de alimentos. En el presente estudio se evaluó el impacto del tipo de hospital, horario, categoría de alimento y tipo de menú sobre el desecho de comida producido en diferentes recintos hospitalarios espAÑOles. Métodos: El desecho de alimentos se midió a través de una escala semi-cuantitativa con 5 niveles para evaluar la aceptabilidad del alimento («nada en plato» «¼ en plato» «mitad en plato» «¾ en plato» y «todo en plato»). El estudio se llevó a cabo en dos periodos de tres meses cada uno durante 2010 y 2011. Una persona entrenada se encargó del pesaje de platos, los cuales se clasificaron en 726 servicios pertenecientes a 11 menús diferentes. En total, se sirvieron 31.392 platos a 7.868 pacientes. Como prueba estadística se utilizó un test estadístico no paramétrico de Kruskal-Wallis (p < 0,05). Resultados: Los menús se consumieron de forma satisfactoria ya que más del 50% de los platos se clasificaron dentro de la categoría «nada en plato». Con respecto a las categorías de alimento, un 26,78% de los platos servidos se correspondieron con sopas y purés, mientras que los platos de pasta, arroz y alimentos listos para el consumo fueron distribuidos en un 4-5% de los servicios. Los postres fueron los platos más consumidos, mientras que los vegetales hervidos fueron menos aceptados. Otros factores como el tipo de hospital influyeron sobre el desecho de alimentos (p < 0,05) aunque el horario de servicio de comidas no (p > 0,05). Conclusión: La inspección visual del desecho de alimentos puede ser útil a la hora de optimizar el tipo y calidad de los menús servidos. El tipo de menú y la categoría de alimento podrían tener una gran influencia sobre la aceptabilidad de los platos por los pacientes.

  5. [Food intake, nutritional status and physical activity between elderly with and without chronic constipation. A comparative study].

    PubMed

    Vargas-García, Elisa Joan; Vargas-Salado, Enrique

    2013-01-01

    antecedentes: el estreñimiento es uno de los trastornos gastrointestinales más comunes en la población de edad avanzada porque con el paso de los años los factores implicados en su causa se modifican y repercuten en la ingestión de alimentos, el estado de nutrición y la actividad física. Objetivo: evaluar en el adulto mayor el efecto en el estreñimiento crónico del consumo de alimentos con alto contenido de fibra, el estado nutricio, y la actividad física. Material y métodos: estudio comparativo, prospectivo y transversal efectuado en 140 adultos mayores de la consulta externa de la Unidad de Medicina Familiar51 del Instituto Mexicano del Seguro Social en la ciudad de León, Guanajuato, durante el periodo del 4 mayo al 30 de octubre de 2009. Se valoró si padecían o no estreñimiento de acuerdo con los criterios de Roma III. Se valoró: peso,talla, circunferencia del brazo, pliegue cutáneo tricipital; se aplicó un cuestionario de actividad física validado, y se obtuvo el registro dietético de tres días (dos de entre semana y uno de sábado o domingo). Resultados: la ingestión promedio de fibra y agua no esultó estadísticamente diferente entre los grupos estudiados. Los pacientes con estreñimiento tuvieron dietas menos completas y variadas (p < 0.02; p < 0.03). El estado nutricio predominante en los adultos mayores de ambos grupos fue de sobrepeso (p= 0.49) pero el grupo sin estreñimiento tuvo niveles más altos de actividad física en comparación con los estreñidos (1664 vs 1049 METs, p= 0.004).Conclusiones: el menor nivel de actividad física, la monotonía en la dieta, y no incluir todos los grupos de alimentos son factores que se asocian con el estreñimiento en el adulto mayor. De acuerdo con los resultados de este estudio la menor ingestión de fibra no se relacionó con el estreñimiento.

  6. [In Process Citation].

    PubMed

    Muros, José Joaquín; Cofre-Bolados, Cristian; Zurita-Ortega, Félix; Castro-Sánchez, Manuel; Linares-Manrique, Marta; Chacón-Cuberos, Ramón

    2016-01-01

    Introducción: la sociedad actual está experimentando reducciones significativas en los niveles de actividad física, y estos niveles de sedentarismo están asociados a un aumento de la obesidad. Objetivo: describir y analizar las relaciones entre composición corporal, realización de actividad física y condición física, además de describir los índices de sobrepeso/obesidad de una muestra de escolares de la provincia de Santiago (Chile). Material y métodos: se diseñó un estudio transversal con una muestra representativa de 515 alumnos (10,6 ± 0,5). Se determinaron diferentes índices antropométricos (IMC y porcentaje graso), así como la actividad física y la condición física (capacidad aeróbica y fuerza muscular máxima en tren superior e inferior). Resultados: alrededor del 55% de la muestra estudiada presentó problemas de sobrepeso/obesidad. Los valores de volumen de oxígeno máximo (VO 2 máx) y fuerza del tren superior fueron estadísticamente superiores en el grupo de los niños que en el de las niñas. Los alumnos clasificados como obesos presentaron unos niveles superiores de porcentaje graso, así como unos niveles inferiores de actividad física y de condición física que el grupo con normopeso. Se encontró una correlación negativa entre las puntuaciones del PAQ-C (Physical Activity Questionnaire for Older Children) y los parámetros antropométricos, así como entre los parámetros antropométricos y los valores obtenidos en todas las pruebas de condición física. Conclusión: ante los alarmantes niveles de sobrepeso y obesidad infantil detectados en Santiago parece de importante relevancia crear planes de intervención centrados en la mejora de la condición física; los grupos con problemas de sobrepeso y obesidad y los grupos de sexo femeninos donde se debería hacer una mayor incidencia. PMID:27238792

  7. [Clinical usefulness of Beta2microglobulin in patients with Primary Sjögren Syndrome].

    PubMed

    Rozzatti, M S; Fontaneto, E; Pedano, V; Racca, A; Pelosso, M; Gobbi, C; Alba, P; Demarchi, M

    2015-01-01

    Las manifestaciones extranglandulares y desórdenes linfoproliferativos son complicaciones que pueden comprometer el curso benigno del Síndrome de Sjögren Primario (SSp). Existen escasos marcadores serológicos con comprobada utilidad para predecirlas y/o diagnosticarlas. Objetivos: Evaluar la utilidad de Beta2microglobulina (β2m) en pacientes con SSp y correlacionarlos con parámetros séricos predictivos de manifestaciones extraglandulares y enfermedades linfoproliferativas (Factor Reumatoideo (FR), Inmunoglobulinas séricas (Igs), C3 y C4). Materiales y métodos: Se realizó una revisión retrospectiva de historias clínicas de pacientes que consultaron en la Unidad de Reumatología del Hospital Córdoba desde enero de 2010 a octubre 2013 y que fueron derivados a la Sección de Inmunología del Servicio de Bioquímica para la determinación de pruebas de laboratorio . Los pacientes fueron clasificados de acuerdo a los Criterios Diagnósticos de patologías autoinmunes en pacientes con diagnóstico de SSp según el Grupo Consenso Americano-Europeo, otras enfermedades autoinmunes y los controles sanos. Se estudiaron las IgG, IgA e IgM, factores del complemento C3, C4 séricos y FR por inmunoturbidimetría y β2m por ELISA. Resultados: 19 pacientes con SSp (Grupo SSp), 28 pacientes con patologías autoinmunes distintas a SSp (Grupo PAD), y 24 controles sanos (Grupo C) fueron incluidos en este estudio. Se evidenció un aumento estadísticamente significativo de β2m en el Grupo SSp respecto al Grupo C (6.19mg/dl vs 2.53mg/dl p<0.001) y respecto al Grupo PAD (6.19 vs 4.38mg/dl p<0.01). En el grupo SSp se observó aumento estadísticamente significativo de IgA (p<0.05) y G (p<0.001) y disminución de C4 (p<0.05) respecto al Grupo C. No se observó correlación entre β2m y el resto de parámetros séricos determinados. Conclusión: β2m permitió discriminar pacientes con SSp de aquellos con otras patologías autoinmunes y sujetos sanos. El aumento de β2m en

  8. Effect of the use of probiotics in the treatment of children with atopic dermatitis; a literature review.

    PubMed

    da Costa Baptista, Ingrid Pillar; Accioly, Elizabeth; de Carvalho Padilha, Patricia

    2013-01-01

    Introducción: La dermatitis atópica (DA) es una enfermedad que afecta principalmente a la población pediátrica, la participación de crónica y repetitiva inflamatoria de la piel la evolución manifestations.Its se conoce como marcha atópica, que se caracteriza por la aparición de alergias respiratorias y la alimentación. Objetivo: Realizar una revisión sistemática de la literatura del estado de la técnica científica sobre el efecto de los probióticos en el tratamiento de niños con DA. Métodos: Se realizaron búsquedas en Medline y Lilacs a través del PubMed portales (http://www.ncbi.nlm.nih. gov/PubMed/) y SciELO (http://www.scielo.br). Había una selección de las publicaciones disponibles en el perío do comprendido entre 2001 y 2011, con la dermatitis atópica palabras clave y los probióticos (en inglés y en portugués). Resultados: Después de aplicar los criterios de inclusión y exclusión, se seleccionaron 12 estudios caso-control que se realizaron en cuatro países europeos y Australia. La calidad metodológica de los estudios se evaluó de acuerdo a las recomendaciones STROBE. Evaluación de un acuerdo entre los investigadores en la clasificación de la calidad de los artículos mostraron una excelente concordancia (k = 1,00, IC del 95%) con un total de 9 trabajos en el nivel B. La mayoría de los estudios (75%) indica un efecto beneficioso de los probióticos en DA, incluida la protección contra las infecciones, la mejora de la respuesta inmune, la reducción de la inflamación y cambios en la flora intestinal, la mejora de la condición clínica de la EA. Los estudios restantes no mostraron efectos beneficiosos de acuerdo a los resultados de interés. Conclusión: La mayoría de los estudios en la literatura científica, en el período estudiado, mostró evidencia de beneficios en el uso de probióticos para controlar las manifestaciones clínicas de la DA, sin embargo el costo/ beneficio del tratamiento siempre debe ser evaluada.

  9. Development of decision support system for oil spill management in the Mediterranean Sea

    NASA Astrophysics Data System (ADS)

    Liubartseva, Svitlana; Coppini, Giovanni; Pinardi, Nadia; De Dominicis, Michela; Marra, Palmalisa; Lecci, Rita; Turrisi, Giuseppe; Creti, Sergio; Martinelli, Sara; Agostini, Paola; Palermo, Francesco

    2016-04-01

    developed as a part of TESSA Project portfolio providing the unified access to others services. Thus, SEACONDITIONS (http://www.sea-conditions.com) performs visualization and on-line delivery of forecast of surface currents, sea surface temperature, significant wave height and direction, wave period and direction; air temperature, surface pressure, precipitation, cloud coverage, wind speed, etc. Apart from the basin scale visualization SEACONDITIONS supports the zooming capability. User feedback reports from fishermen, port authorities including Coast Guard, offshore companies, aquatic and coastal tourism managers, and academia have been collected and used for the system improvements. User-friendliness of GUI, tooltips, an opportunity to vary the advanced parameters, efficiency of the visualization tool, and a help section were appreciated in these reports. In accordance with the users' requirements, a to-do list is composed for the further development of WITOIL. This work was performed in the framework of the TESSA Project (Sviluppo di TEcnologie per la Situational Sea Awareness) supported by PON (Ricerca & Competitività 2007-2013) cofunded by UE (Fondo Europeo di sviluppo regionale), MIUR (Ministero Italiano dell'Università e della Ricerca), and MSE (Ministero dello Sviluppo Economico). References De Dominicis, M., Pinardi, N., Zodiatis, G., and Lardner, R., 2013. MEDSLIK-II, a Lagrangian marine surface oil spill model for short term forecasting - Part 1: Theory. Geosci. Model Dev. 6, 1851-1869.

  10. PRESENT; PREScription of Enteral Nutrition in pediaTric Crohn's disease in Spain.

    PubMed

    Navas-López, Victor Manuel; Martín-de-Carpi, Javier; Segarra, Oscar; García-Burriel, José Ignacio; Díaz-Martín, Juan José; Rodríguez, Alejandro; Medina, Enrique; Juste, Mercedes

    2014-03-01

    : La frecuencia de empleo de la NEE en pacientes con EC es similar a la de otros cuestionarios europeos. Se precisan herramientas y recursos que faciliten la aceptación por parte del paciente y de su familia así como disponer de más tiempo a dedicar para instaurar esta modalidad terapéutica. Dada la disparidad de criterios para la indicación de la EEN, sería útil disponer de guías de práctica clínica ampliamente aceptadas o protocolos que facilitan la decisión de utilizarla.

  11. Chemotherapy near the end of life; assessment of the clinical practise in onco-hematological in adult patients.

    PubMed

    Taberner Bonastre, Pilar; Taberner Bonastre, María Teresa; Soler Company, Enrique; Pérez-Serrano Lainosa, María Dolores

    2016-01-01

    Objetivo: garantizar una buena calidad de vida en la última fase de los pacientes onco-hematológicos debería ser nuestro principal objetivo; a pesar de ello, disponemos de pocos datos a nivel europeo y los estudios publicados son contradictorios. No obstante, la mayoría coinciden en que administrar quimioterapia en la etapa final de la vida impacta de forma negativa en la calidad de vida del paciente. El objetivo principal del estudio es analizar los indicadores de no agresividad del tratamiento en pacientes onco-hematológicos. Como objetivo secundario, realizar un estudio descriptivo de las variables clínicas de los pacientes a los que se les administra quimioterapia en la fase final de la vida y los esquemas más utilizados. Método: se realizó un estudio observacional retrospectivo en un hospital de tercer nivel. Se incluyeron todos los pacientes oncológicos y hematológicos que recibieron quimioterapia (oral o intravenosa) entre enero y diciembre de 2013, a los que se les administró la última quimioterapia en los 90 días previos al fallecimiento. Resultados: se analizaron 823 pacientes que recibieron tratamiento entre enero y diciembre de 2013. De ellos, 106 (13%) cumplían los criterios de inclusión. Un 14,1% (n = 93) de los pacientes oncológicos y un 8,4% (n = 13) de los hematológicos que habían recibido quimioterapia durante el último año de vida lo seguían haciendo en los últimos tres meses. Un 21,7% (n = 23) de los pacientes recibieron quimioterapia en las dos últimas semanas, 41,5% (n = 44) en los últimos 30 días y 78,3% (n = 83) en los últimos dos meses de vida. El 67,9% (n = 72) de los pacientes ingresaron en el hospital durante los últimos tres meses de vida, el 47,2% (n = 50) lo hicieron durante el último mes, el 33% (n = 35) durante las dos últimas semanas y el 10,4% (n = 11) durante los últimos tres días de vida. El 25,5% (n = 27) de los pacientes ingresaron en más de una ocasión durante los 90 días previos al

  12. Lower Aptian Sequence at Madoz (SE Spain) in Relation to Cretaceous Anoxic Event-1a (OAE- 1a)

    NASA Astrophysics Data System (ADS)

    Gaona-Narvaez, T.; Maurrasse, F. J.; Lamolda, M. A.

    2008-05-01

    levels of fossiliferous marls (bioclasts < 10%), calcareous shales and pyritic black shales (bioclasts < 5%) that contain non-rudist bivalves, algae, echinoids and scarce benthic foraminifers. Microfacies of the prominent black shale bed, which occurs about between 14.5 and 16.3 m within subunit 2b, show a matrix composed essentially of clays (> 50%), framboidal pyrite (1-2.5%), and organic matter (5-7 %). Benthic foraminifers and bioturbation are totally absent within this interval, but there are occasional algal fragments, and very rare ostracods. In contrast to the adjacent levels, the absence of benthic foraminifers lack of bioturbation, and increased OM suggest that the black shale level clearly implies development of anoxic to dysoxic conditions within that interval. Based on the presence of D. desahyesi in subunit 1 its relationship to OAE- 1a remains ambiguous, and its occurrence may be related to a possible regional event due to the complexity of the paleogeography of that region during its tectonic development in the Early Cretaceous. Duvernois, Ch., Floquet, M., Humbel, B. 1972. La Sierra d'Aralar (Pyrénées basques Espagnoles): stratigraphie, structure. Thèse de Doctorat de Troisième cycle, Université de Dijon, 240 pp. Cherchi, A., Schroeder, R. 1998. Aptian and Albian large foraminifera at Madoz. 24° Coloquio Europeo de Micropaleontología. Libro Guía. Lamolda, M.A. Ed. 71-73p.

  13. Pre-transplant portal vein thrombosis is an independent risk factor for graft loss due to hepatic artery thrombosis in liver transplant recipients

    PubMed Central

    Stine, Jonathan G.; Pelletier, Shawn J.; Schmitt, Timothy M.; Porte, Robert J.; Northup, Patrick G.

    2015-01-01

    Background Hepatic artery thrombosis is an uncommon but catastrophic complication following liver transplantation. We hypothesize that recipients with portal vein thrombosis are at increased risk. Methods Data on all liver transplants in the U.S. during the MELD era through September 2014 were obtained from UNOS. Status one, multivisceral, living donor, re-transplants, pediatric recipients and donation after cardiac death were excluded. Logistic regression models were constructed for hepatic artery thrombosis with resultant graft loss within 90 days of transplantation. Results 63,182 recipients underwent transplantation; 662 (1.1%) recipients had early hepatic artery thrombosis; of those, 91 (13.8%) had pre-transplant portal vein thrombosis, versus 7.5% with portal vein thrombosis but no hepatic artery thrombosis (p < 0.0001). Portal vein thrombosis was associated with an increased independent risk of hepatic artery thrombosis (OR 2.17, 95% CI 1.71–2.76, p < 0.001) as was donor risk index (OR 2.02, 95% CI 1.65–2.48, p < 0.001). Heparin use at cross clamp, INR, and male donors were all significantly associated with lower risk. Discussion Pre-transplant portal vein thrombosis is associated with post-transplant hepatic artery thrombosis independent of other factors. Recipients with portal vein thrombosis might benefit from aggressive coagulation management and careful donor selection. More research is needed to determine causal mechanism. PMID:27017168

  14. [Family intervention for the management of overweight and obesity in schoolchildren].

    PubMed

    González-Heredia, Ricardo; Castañeda-Sánchez, Oscar; López-Morales, Cruz Mónica; Brito-Zurita, Olga Rosa; Sabag-Ruize, Enrique

    2014-01-01

    INTRODUCTIÓN: el manejo de la obesidad es complejo y debe ser multidisciplinario; los tratamientos conductuales basados en la familia para el control de la obesidad infantil tienen un alto grado de eficacia. Se ha argumentado que cuando los niños y los padres son blanco de los cambios de comportamiento en conjunto, los resultados de pérdida de peso generalmente mejoran. El objetivo es determinar el efecto de una intervención basada en la familia para la reducción de peso en escolares con sobrepeso u obesidad. MÉTODOS: estudio cuasi experimental en escolares de 6 a 12 años de la Unidad Médica Familiar 1 en Ciudad Obregón, Sonora. El grupo de intervención correspondió a 30 escolares con sobrepeso u obesidad, además de que uno o ambos padres presentaron sobrepeso u obesidad; en el grupo control se incluyeron 30 escolares con sobrepeso u obesidad, y padres con peso normal. Se midió peso, talla e índice de masa corporal (IMC) basal, final y mensual. Se utilizó t de Student para contrastar las variables cuantitativas, por medio del programa SPSS, versión 15.

  15. [In Process Citation].

    PubMed

    Santacruz-Cerdán, Elisa; Arcano, Karina; Arrieta Blanco, Francisco; Ortiz Flores, Andrés; Mateo Lobo, Raquel; Botella Carretero, José Ignacio; Vázquez Martínez, Clotilde; Zamarrón Cuesta, Isabel

    2016-01-01

    El uso de la nutrición parenteral domiciliaria (NPD) en pacientes que no pueden alcanzar sus requerimientos nutricionales por la vía enteral está aumentando en los últimos años, permitiendo la normalización del estilo de vida de los pacientes. Entre las patologías que más frecuentemente precisan de la NPD en España destacan la neoplasia y la isquemia mesentérica. Sin embargo, la NPD constituye uno de los pilares básicos del tratamiento de enfermedades mucho menos frecuentes como es el caso de la esclerosis peritoneal encapsulante. A continuación presentamos el caso de un paciente diagnosticado de esclerosis peritoneal encapsulante con soporte NPD de más de 7 años de NPD con un catéter central de inserción periférica (PICC) para la NPD sin complicaciones y pudiendo realizar su actividad laboral habitual. Dado lo excepcional del caso lo remitimos para su publicación. PMID:27019258

  16. [Perception of physical fitness is associated with perception of body weight; sociodemographic analysis in Spain].

    PubMed

    Tejero-González, Carlos Ma

    2014-02-01

    Introducción: El objetivo del trabajo fue analizar la relación entre características sociodemográficas, percepción de peso corporal y percepción de estado de forma física. Métodos: Encuesta mediante entrevista personal. La muestra estuvo formada por 8.594 participantes residentes en España de entre 15 y 97 años. El error muestral fue ±1,07%. Resultados: Entre las personas que declararon estar bien de peso o tener una forma física buena o excelente hubo, proporcionalmente, mayor prevalencia de hombres, jóvenes de entre 15 y 34 años, personas con estudios universitarios y ciudadanos de clase social alta o muy alta (P < 0,001). Además, se infirió mayor posibilidad de percibir una forma física deficiente o muy mala en las cohortes que consideraron que les vendría bien ganar algo de peso (OR = 2,87), perder unos pocos kilos (OR = 2,31) o perder muchos kilos (OR = 8,78). Conclusión: La percepción del estado de forma física está asociada a la percepción del peso corporal, independientemente de las características sociodemográficas de las personas.

  17. [Supra-on state freezing of gait: two case reports].

    PubMed

    Gallardo-Alcaniz, M José; Cabello-De la Rosa, Juan P; Bravo-Gomez, José J; Diaz-Gomez, Samuel; Vaamonde-Gamo, Julia

    2016-04-16

    Introduccion. Durante los ultimos años se han descrito diversos tipos de congelacion de la marcha (CDM), definidos fundamentalmente por su respuesta o no al tratamiento con levodopa. El fenomeno de la CDM en la enfermedad de Parkinson es de presentacion muy variable de unos pacientes a otros, con sustrato fisiopatologico diverso. En algunos pacientes, el aumento del estimulo dopaminergico no solo no mejora, sino que puede empeorar este problema. Casos clinicos. Se presentan dos pacientes con enfermedad de Parkinson que fueron evaluados en situacion off, on y supra-on. Para la evaluacion motora se utilizo la Unified Parkinson's Disease Rating Scale III (bilateral) y el tapping test en las extremidades inferiores, y se cuantificaron los episodios de CDM que presentaban los pacientes en las tres situaciones. Ambos pacientes sufrian episodios de CDM en situacion off que no mejoraban significativamente durante el on. Al aumentar el estimulo dopaminergico, en un intento de mejorar la respuesta motora, empeoraron significativamente los episodios de CDM, hasta el punto de imposibilitar la marcha por graves bloqueos. Conclusiones. Los episodios de CDM no siempre son una mera consecuencia de la acinesia o la rigidez. En la fisiopatologia de la CDM podrian intervenir estructuras que desbordan la sustancia negra y el deficit dopaminergico, lo cual podria explicar la falta de respuesta adecuada al tratamiento e incluso el empeoramiento por desequilibrio de los neurotransmisores, en relacion con la sobreestimulacion dopaminergica, en otros nucleos implicados en el control postural y de la marcha.

  18. An Arduino-Based Resonant Cradle Design with Infant Cries Recognition.

    PubMed

    Chao, Chun-Tang; Wang, Chia-Wei; Chiou, Juing-Shian; Wang, Chi-Jo

    2015-01-01

    This paper proposes a resonant electric cradle design with infant cries recognition, employing an Arduino UNO as the core processor. For most commercially available electric cradles, the drive motor is closely combined with the bearing on the top, resulting in a lot of energy consumption. In this proposal, a ball bearing design was adopted and the driving force is under the cradle to increase the distance from the object to fulcrum and torque. The sensors are designed to detect the oscillation state, and then the force is driven at the critical time to achieve the maximum output response while saving energy according to the principle of resonance. As for the driving forces, the winding power and motors are carefully placed under the cradle. The sensors, including the three-axis accelerometer and infrared sensor, are tested and applied under swinging amplitude control. In addition, infant cry recognition technology was incorporated in the design to further develop its functionality, which is a rare feature in this kind of hardware. The proposed nonlinear operator of fundamental frequency (f0) analysis is able to identify different types of infant cries. In conclusion, this paper proposes an energy-saving electric cradle with infant cries recognition and the experimental results demonstrate the effectiveness of this approach. PMID:26247947

  19. Psycho-physiological training approach for amputee rehabilitation.

    PubMed

    Dhal, Chandan; Wahi, Akshat

    2015-01-01

    Electromyography (EMG) signals are very noisy and difficult to acquire. Conventional techniques involve amplification and filtering through analog circuits, which makes the system very unstable. The surface EMG signals lie in the frequency range of 6Hz to 600Hz, and the dominant range is between the ranges from 20Hz to 150Hz. 1 Our project aimed to analyze an EMG signal effectively over its complete frequency range. To remove these defects, we designed what we think is an easy, effective, and reliable signal processing technique. We did spectrum analysis, so as to perform all the processing such as amplification, filtering, and thresholding on an Arduino Uno board, hence removing the need for analog amplifiers and filtering circuits, which have stability issues. The conversion of time domain to frequency domain of any signal gives a detailed data of the signal set. Our main aim is to use this useful data for an alternative methodology for rehabilitation called a psychophysiological approach to rehabilitation in prosthesis, which can reduce the cost of the myoelectric arm, as well as increase its efficiency. This method allows the user to gain control over their muscle sets in a less stressful environment. Further, we also have described how our approach is viable and can benefit the rehabilitation process. We used our DSP EMG signals to play an online game and showed how this approach can be used in rehabilitation. PMID:25793347

  20. Biochemical characterization of a detergent-stable serine alkaline protease from Caldicoprobacter guelmensis.

    PubMed

    Bouacem, Khelifa; Bouanane-Darenfed, Amel; Laribi-Habchi, Hassiba; Elhoul, Mouna Ben; Hmida-Sayari, Aïda; Hacene, Hocine; Ollivier, Bernard; Fardeau, Marie-Laure; Jaouadi, Bassem; Bejar, Samir

    2015-11-01

    Caldicoprobacter guelmensis isolated from the hydrothermal hot spring of Guelma (Algeria) produced high amounts of extracellular thermostable serine alkaline protease (called SAPCG) (23,000U/mL). The latter was purified by ammonium sulphate precipitation, UNO Q-6 FPLC and Zorbex PSM 300 HPLC, and submitted to biochemical characterization assays. Matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis revealed that the purified enzyme was a monomer, with a molecular mass of 55,824.19Da. The 19 N-terminal residue sequence of SAPCG showed high homology with those of microbial proteases. The enzyme was completely inhibited by phenylmethanesulfonyl fluoride (PMSF) and diiodopropyl fluorophosphates (DFP), which suggested its belonging to the serine protease family. It showed optimum protease activity at pH 10 and 70°C with casein as a substrate. The thermoactivity and thermostability of SAPCG were enhanced in the presence of 2mM Ca(2+). Its half-life times at 80 and 90°C were 180 and 60min, respectively. Interestingly, the SAPCG protease exhibited significant compatibility with iSiS and Persil, and wash performance analysis revealed that it could remove blood-stains effectively. Overall, SAPCG displayed a number of attractive properties that make it a promising candidate for future applications as an additive in detergent formulations.

  1. [Description of a series of hospital patients with a spinal fistula].

    PubMed

    Garcia-Cabo, C; Morales-Deza, E S; Martinez-Rodriguez, L; Murias-Quintana, E; Perez-Alvarez, A; Martinez-Ramos, J; Vega-Valdes, P; Suarez-Santos, P; Garcia-Rua, A; Moris, G

    2016-10-01

    Introduccion. Aunque las fistulas espinales suponen el 70% de las malformaciones arteriovenosas espinales, son una entidad infradiagnosticada. El shunt arteriovenoso produce una congestion vascular que da lugar a una mielopatia progresiva, en ocasiones irreversible si no se trata de forma precoz. Objetivo. Describir las caracteristicas clinicorradiologicas de una serie de pacientes con fistula espinal. Pacientes y metodos. Se realizo una busqueda retrospectiva de pacientes con diagnostico de fistula espinal ingresados en el area de neurociencias de un hospital de tercer nivel asistencial. Resultados. Se identificaron 19 pacientes (7 mujeres y 12 varones) con una edad media de 56 años. La fistula espinal fue de tipo I en un 79% de los pacientes y la localizacion dorsal fue la mas frecuente. La mayoria de los casos presento un curso progresivo (90%). Un 74% de los pacientes se diagnostico mediante resonancia magnetica. En cuatro casos fue necesaria la realizacion de una angiografia para llegar al diagnostico, y en uno de ellos se preciso una biopsia intraoperatoria. Se realizaron tres punciones lumbares, en dos de las cuales se objetivo pleocitosis linfocitaria e hiperproteinorraquia. El retraso diagnostico medio fue de nueve meses. Se trato a un 79% de los pacientes, y de ellos solo mejoro el 10%. Conclusiones. Ante una clinica sugestiva de fistula espinal, debe realizarse una angiografia espinal diagnostica aunque el paciente estudiado pueda presentar caracteristicas licuorales atipicas y normalidad en la resonancia magnetica medular.

  2. [Auditing as a tool for ongoing improvement in the Stroke Care Plan of the Region of Aragon].

    PubMed

    Gimenez-Munoz, A; Palacin-Larroy, M; Bestue, M; Marta-Moreno, J

    2016-07-16

    Introduccion. El Plan de Atencion al Ictus de Aragon (PAIA) se creo en 2008 en el marco de la Estrategia Nacional en Ictus del Sistema Nacional de Salud. La monitorizacion de la atencion hospitalaria al ictus mediante auditorias periodicas se definio como una de sus lineas de trabajo. Objetivo. Determinar la calidad del proceso asistencial hospitalario prestado al paciente con ictus en Aragon mediante el uso de indicadores de calidad. Materiales y metodos. Se realizaron tres audits (en los años 2008, 2010 y 2012) siguiendo la misma metodologia, basada en la revision retrospectiva de una muestra representativa de ingresos por ictus en cada uno de los hospitales generales del Servicio Aragones de Salud. Se recogio informacion sobre 48 indicadores seleccionados segun su evidencia cientifica o relevancia clinica. Resultados. Se estudiaron 1.011 casos (331 en el primer audit, y 340 en el segundo y en el tercero). Treinta y un indicadores presentaron una mejoria significativa (entre ellos destacan los indicadores de calidad de la historia clinica, de evaluacion neurologica, las medidas preventivas iniciales y, con especial relevancia, la realizacion de test de deglucion), dos sufrieron empeoramiento (relacionados con el tratamiento rehabilitador) y 15 no registraron variaciones significativas. Conclusiones. La implantacion del PAIA ha supuesto una mejoria notable en la mayoria de los indicadores de calidad evaluados, reflejo de una mejora continua en la atencion hospitalaria del ictus. La generalizacion progresiva de la atencion especializada y la creacion de las areas de ictus son algunos de los factores determinantes.

  3. A factor converting viable but nonculturable Vibrio cholerae to a culturable state in eukaryotic cells is a human catalase.

    PubMed

    Senoh, Mitsutoshi; Hamabata, Takashi; Takeda, Yoshifumi

    2015-08-01

    In our previous work, we demonstrated that viable but nonculturable (VBNC) Vibrio cholerae O1 and O139 were converted to culturable by coculture with eukaryotic cells. Furthermore, we isolated a factor converting VBNC V. cholerae to culturable (FCVC) from a eukaryotic cell line, HT-29. In this study, we purified FCVC by successive column chromatographies comprising UNO Q-6 anion exchange, Bio-Scale CHT2-1 hydroxyapatite, and Superdex 200 10/300 GL. Homogeneity of the purified FCVC was demonstrated by SDS-PAGE. Nano-LC MS/MS analysis showed that the purified FCVC was a human catalase. An experiment of RNAi knockdown of catalase mRNA from HT-29 cells and treatment of the purified FCVC with a catalase inhibitor, 3-amino-1,2,4-triazole confirmed that the FCVC was a catalase. A possible role of the catalase in converting a VBNC V. cholerae to a culturable state in the human intestine is discussed.

  4. [Valutare le esperienze positive e negative: la validazione di una nuova misura del benessere in una popolazione italiana].

    PubMed

    Corno, Giulia; Molinari, Guadalupe; Baños, Rosa Maria

    2016-01-01

    RIASSUNTO. Lo scopo del presente studio è quello di esplorare le proprietà psicometriche di uno strumento di misurazione dell'affetto, la Scala di Esperienze Positive e Negative (SPANE), all'interno di una popolazione italiana. Gli esiti dell'analisi fattoriale confermativa comprovano l'attesa struttura a due fattori, sentimenti positivi e negativi. Le correlazioni con altre dimensioni (per es., ansia, depressione, affetto, aspettative future) confermano i risultati ottenuti con le precedenti versioni della scala: affetto negativo, ansia, depressione e aspettative future negative correlano positivamente con la subscala di esperienze negative e negativamente con la subscala di esperienze positive dello SPANE. In conclusione, i risultati del nostro studio dimostrano che la versione italiana dello SPANE presenta caratteristiche psicometriche simili a quelle mostrate dalla versione orginale e da successive validazioni dello strumento in altre lingue. La scala presenta, inoltre, affidabilità e validità fattoriale. Lo SPANE è un indice utile dal punto di vista clinico che può fornire informazioni rilevanti circa l'esperienza emotiva e il benessere della persona. Nonostante ulteriori studi siano necessari per confermare le caratteristiche psicometriche della scala, la presente validazione della versione italiana dello SPANE può contribuire ad ampliare la ricerca nell'ambito del benessere in una popolazione Italiana. PMID:27362822

  5. Dinámica de planetas extrasolares resonantes

    NASA Astrophysics Data System (ADS)

    Beauge, C.

    Actualmente se han detectado 117 planetas alrededor de estrellas de Secuencia Principal, incluyendo 12 sistemas planetarios, cada uno con dos o tres miembros. De estos últimos, ocho poseen planetas en órbitas próximas y sus perturbaciones gravitacionales se convierten en un factor fundamental para la estabilidad orbital del sistema. Todos se encuentran en configuraciones resonantes, desde la conmensurabilidad de movimientos 2/1 de Gliese 876, hasta la resonancia secular de Ups And. En esta presentación analizamos varios aspectos de la dinámica resonante de los planetas extrasolares, incluyendo la existencia de soluciones de equilibrio, construcción de modelos analógicos y métodos para la determinación de masas individuales. También discutimos por qué las resonancias son tan frecuentes en estos sistemas, comparado con nuestro propio Sistema Solar. Por último, intentamos relacionar estos modelos con la hipótesis de migración planetaria, buscando límites en su extensión y en los posibles mecanismos que le dieron origen.

  6. Bases para la elaboracion de unidades didacticas de calidad en el area de ciencias (Fisica y Quimica 3 deg ESO)

    NASA Astrophysics Data System (ADS)

    Maccioni, Elena Lucia

    Este Trabajo Fin de Master tiene como objeto, el estudio previo de la educacion de la ciencia en la actualidad y mas destacable, del diseno de las unidades didacticas segun las metodologias mas frecuentes aplicadas por los diferentes sistemas educativos en el area de las Ciencias teniendo en cuenta la importancia y el efecto de la psicologia del alumnado y todo ello como no puede ser de otro modo bajo el corse de la Legislacion aplicable, Estatal, Autonomica y europea. Con estos antecedentes, se extrae cuales son las preguntas que deben contestarse en la elaboracion de una unidad didactica de calidad en el contexto, generacional (edad y sexo), del Proyecto Educativo de Centro, y de la Programacion del Departamento, discutiendo y justificando cada uno de los apartados en que estructuradamente dividiremos dicha Unidad, con un formato manejable, util, y dinamico en el tiempo que sea un verdadero instrumento educativo de aula. Teniendo en cuenta estas premisas, se procede a hacer una recopilacion de una misma unidad didactica publicada por diferentes editoriales, elegidas no al azar, sino en funcion de su penetracion editorial en nuestros centros de ESO, siendo las elegidas (SM y Oxford). Las diferentes unidades seleccionadas son analizadas de forma critica, atendiendo a los criterios generales de calidad bajo parametros cientificos y normativos, concluyendo con la aportacion final que es la redaccion de unas pautas cientifico-pedagogicas, para redactar unidades didacticas de calidad en el area de la Ciencias, en concreto en la Asignatura de Fisica y Quimica de 3º de ESO.

  7. The effect of socioeconomic indicators and macronutrient intake rate on body composition in adolescents 12 to 16 years old in Merida, Yucatan.

    PubMed

    Datta Banik, Sudip; Andrade Olalde, Ana Carolina; Rodriguez, Luis; Dickinson, Federico

    2014-01-01

    Intake pattern of macronutrients (protein, lipid, carbohydrate) and socioeconomic status (SES) are major causes of high child and adolescent overweight and obesity prevalences in Mexico. An evaluation was done of the relationship between body mass index (BMI)-based nutritional status and body composition (BC), macronutrient intake rates (MIR) and SES indicators in 127 boys and 156 girls aged 12 to 16 years attending schools in Merida, Mexico. Anthropometric variables included height, weight, and BMI. The BC (body fat mass, fat-free mass, dry lean mass) was estimated by bioelectrical impedance (Bodystat 1500 MDD). The MIR were estimated following FAO/WHO/UNO standard (1985). Proxy socioeconomic indicators included parents' age (as a maturity indicator) and education, fathers' occupation, school type and monthly household food expenditure per capita. Excess weight (overweight + obesity) assessed by BMI, was higher in boys (40.16 %) than in girls (33.97 %). Boys had higher BMI, less fat mass and higher fat-free mass than girls. The MIR did not vary significantly in response to age, sex, BC or SES. Participants with higher SES were taller and heavier, had higher fat-free mass and lower fat mass. In the studied adolescents, anthropometric and BC values, and overweight and obesity rates were more associated with SES than MIR.

  8. Ethical criteria for procuring and distributing organs for transplantation.

    PubMed

    Childress, J F

    1989-01-01

    This article provides an ethical analysis and assessment of various actual and proposed policies of organ procurement and distribution in light of moral principles already embedded in U.S. institutions, laws, policies, and practices. Evaluating different methods of acquisition of human body parts--donation (express and presumed), sales, abandonment, and expropriation--the author argues for laws and policies, including required request, to maintain and facilitate express donation of organs by individuals and their families. Such laws and policies need adequate time for a determination of their effectiveness before society moves to other major alternatives, such as a market. In organ allocation and distribution, which have close moral connections with organ procurement, the author defends the judgment of the federal Task Force on Organ Transplantation that the community should have dispositional authority over donated organs, that professionals should be viewed as trustees and stewards of donated organs, and that the public should be heavily involved in the formation of policies of allocation and distribution. Concentrating on policies being developed in the United Network for Organ Sharing, the author examines the point system for cadaveric kidneys, the access of foreign nationals to organs donated in the U.S., and the multiple listings of patients seeking transplants. He concludes by identifying two major problems of equitable access to donated organs that will have to be addressed by social institutions other than UNOS: access to the waiting list for donated organs and the role of ability to pay in extrarenal transplants.

  9. Appendix stump closure with endoloop in laparoscopic appendectomy.

    PubMed

    Caglià, Pietro; Tracia, Angelo; Spataro, Daniele; Borzì, Laura; Lucifora, Bibiana; Tracia, Luciano; Amodeo, Corrado

    2014-01-01

    L’appendicite acuta rappresenta la più comune patologia infiammatoria della cavità adddominale. Mc Burney ne ha per primo descritto il trattamento chirurgico utilizzando la classica incisione nel quadrante addominale inferiore destro. Tale approccio è stato considerato il trattamento standard della patologia appendicolare per più di un secolo, fino all’inizio dell’era video laparoscopica. I rapidi cambiamenti tecnici e gli innegabili vantaggi della procedura videolaparoscopica ha portato ad una ampia diffusione della metodica in ambito clinico. La chiusura del moncone appendicolare, durante l’appendicectomia video laparoscopica, rappresenta uno degli aspetti tecnici fondamentali della procedura per le gravi potenziali complicanze che possono derivare da un suo non appropriato trattamento. Gravi complicanze sono infatti rappresentate da deiscenza, fistole stercoracee e peritonite. La chiusura con endostapler, hem-o-look e legatura intracorporea rappresentano le metodiche più comunemente utilizzate. Tutte le alternative descritte presentano vantaggi e svantaggi e vanno rapportate ai diversi stadi clinici della patologia appendicolare. Va inoltre notato che le differenti metodiche di trattamento del moncone appendicolare non sono state testate in studi randomizzati. In base alla nostra esperienza si può affermare che il trattamento del moncone appendicolare con endoloop può essere utilizzato con sicurezza e dovrebbe essere considerata la metodica di scelta anche in relazione al rapporto costo-beneficio. Metodi alternativi di chiusura del moncone appendicolare andrebbero utilizzati in caso di appendicite flemmonosa o gangrenosa, ascesso peritiflitico e/o contemporaneo trattamento di diverticolo di Meckel.

  10. [Treatment of trigeminal neuralgia: an update and future prospects of percutaneous techniques].

    PubMed

    Bescós, Agustín; Pascual, Vicenç; Escosa-Bage, Marcos; Malaga, Xavier

    2015-08-01

    Introduccion. La neuralgia del trigemino es uno de los sindromes de dolor facial mas graves. La incidencia anual varia entre el 4-13% y altera de forma significativa la calidad de vida de los afectados. Cuando el dolor no puede controlarse con tratamiento farmacologico, existen diferentes opciones quirurgicas. La seleccion de la tecnica esta basada en estudios observacionales y su aplicacion depende de la experiencia de cada centro. Objetivos. Evaluar la efectividad y el nivel de evidencia del tratamiento farmacologico y quirurgico en la neuralgia del trigemino, y analizar el papel actual de las tecnicas percutaneas en el tratamiento de esta patologia. Desarrollo. El tratamiento inicial de la neuralgia del trigemino es el farmacologico y la carbamacepina es el unico farmaco con suficiente nivel de evidencia. Las tecnicas quirurgicas percutaneas son efectivas y de facil aplicacion, pero la tendencia a la recidiva conduce a la preferencia por la microdescompresion vascular. Sin embargo, no hay estudios comparativos que determinen la superioridad de alguna tecnica con buen nivel de evidencia. Se han revisado las tres tecnicas percutaneas mas utilizadas, la compresion con balon, la rizotomia con glicerol y la termocoagulacion por radiofrecuencia. Esta ultima es la que ha presentado mayor desarrollo en los ultimos años, con la aparicion de tecnicas neurofisiologicas que pueden optimizar los resultados. Conclusiones. La seleccion de una tecnica quirurgica en la neuralgia del trigemino no esta bien apoyada por ensayos clinicos aleatorizados. Los nuevos procedimientos en la aplicacion de la radiofrecuencia pueden mejorar las perspectivas del tratamiento de esta patologia.

  11. Preparation of scanning tunneling microscopy tips using pulsed alternating current etching

    SciTech Connect

    Valencia, Victor A.; Thaker, Avesh A.; Derouin, Jonathan; Valencia, Damian N.; Farber, Rachael G.; Gebel, Dana A.; Killelea, Daniel R.

    2015-03-15

    An electrochemical method using pulsed alternating current etching (PACE) to produce atomically sharp scanning tunneling microscopy (STM) tips is presented. An Arduino Uno microcontroller was used to control the number and duration of the alternating current (AC) pulses, allowing for ready optimization of the procedures for both Pt:Ir and W tips using a single apparatus. W tips prepared using constant and pulsed AC power were compared. Tips fashioned using PACE were sharper than those etched with continuous AC power alone. Pt:Ir tips were prepared with an initial coarse etching stage using continuous AC power followed by fine etching using PACE. The number and potential of the finishing AC pulses was varied and scanning electron microscope imaging was used to compare the results. Finally, tip quality using the optimized procedures was verified by UHV-STM imaging. With PACE, at least 70% of the W tips and 80% of the Pt:Ir tips were of sufficiently high quality to obtain atomically resolved images of HOPG or Ni(111)

  12. [Intra and inter-observer reliability of electroencephalogram interpretation in pediatric patients with neurological alterations].

    PubMed

    Ramírez-Campos, Jorge; Núñez-Velázquez, Marco; Cárdenas-Rojo, Noé; Sevilla-Castillo, Ricardo A; Palacios-Saucedo, Gerardo C

    2014-01-01

    Introducción: interpretar un electroencefalograma (EEG) es un proceso subjetivo que involucra diversos obstáculos para llegar a un acuerdo. Si la concordancia interobservador de un proceso diagnóstico es pobre, ese proceso no puede considerarse certero. El objetivo de este estudio fue valorar la concordancia intra e interobservador de la lectura del EEG en pacientes pediátricos. Métodos: se incluyeron 108 EEG de niños menores de 16 años, los cuales fueron interpretados por dos neurólogos pediatras. Para evaluar la concordancia intraobservador, el observador número uno realizó tres lecturas en tres tiempos distintos; la tercera lectura fue ciega para el diagnóstico. La concordancia interobservador fue evaluada por medio de una lectura ciega para el diagnóstico de los dos observadores. Se midió el índice kappa. Resultados: la concordancia intraobservador para diferenciar si el EEG era normal o anormal fue substancial en las tres lecturas (kappa 0.66-0.78). La concordancia más alta correspondió a las lecturas con conocimiento del diagnóstico. La concordancia interobservador para evaluar si el EEG era anormal o normal fue leve (k = 0.12). Conclusiones: el EEG es un estudio subjetivo que depende del interpretador. Es necesario establecer un consenso para uniformar los criterios para su interpretación y así aumentar la concordancia.

  13. [Disorders of executive functions. Diagnosis and treatment].

    PubMed

    Delgado-Mejía, Iván D; Etchepareborda, Máximo C

    2013-09-01

    Introduccion. Los diferentes aportes de la literatura cientifica ratifican, desde hace un par de decadas, a la corteza prefrontal como base neurobiologica de las funciones ejecutivas. En la actualidad, tanto los protocolos de evaluacion para la realizacion del diagnostico como la estructuracion de los planes de tratamiento y estimulacion neurocognitiva deben hacer la lectura de cada uno de los sindromes prefrontales (dorsolateral, medial o del cingulo anterior, y orbitofrontal) implicados en la etiopatogenia de los diferentes trastornos del neurodesarrollo y del adulto en los que se ven afectadas las funciones ejecutivas. Objetivos. Exponer los ultimos avances sobre diagnostico y tratamiento de las funciones ejecutivas y resaltar la importancia de identificar y comprender en la fase diagnostica y en la rehabilitacion neurocognitiva los tres sindromes de disfuncion prefrontal. Desarrollo. Se realiza una revision bibliografica sobre los ultimos avances neurocientificos alrededor de las bases neurobiologicas, neuropsicologicas, diagnostico y tratamiento de las funciones ejecutivas. Conclusion. Cada dia la comunidad neurocientifica ratifica la importancia de identificar y comprender en la etapa diagnostica los circuitos cerebrales, especificamente los sindromes de disfuncion prefrontal implicados en los deficits neuropsicologicos de los diferentes trastornos del neurodesarrollo y del adulto para poder establecer protocolos eficaces de estimulacion neurocognitiva.

  14. [Consumption of fruits and its association with nutritional status in chilean university students career of physical education].

    PubMed

    Durán-Agüero, Samuel; Valdes-Badilla, Pablo; Godoy Cumillaf, Andrés; Herrera-Valenzuela, Tomás

    2015-05-01

    Introducción: Chile es uno de los paises que alcanza los mayores niveles de sobrepeso y obesidad a nivel mundial (66.7% de la poblacion chilena), siendo los estudiantes universitarios un grupo tendiente a engrosar estas cifras por considerarse un grupo vulnerable nutricionalmente. Objetivo: Asociar el consumo de frutas con el estado nutricional de estudiantes universitarios chilenos de educacion fisica. Métodos: La poblacion estuvo constituida por todos los estudiantes de la Carrera de Pedagogia en Educacion Fisica de la Universidad Autonoma de Chile, sede Temuco (n=420). La muestra incluyo a 239 estudiantes (56,9%), hombres (76,5%), con un promedio de edad de 21,5 } 2,1 anos. A cada alumno se determino el estado nutricional y se les aplico una encuesta de habitos alimentarios validada. Resultados: Se observa una asociacion entre el consumo de frutas (≥2 porciones/dia) en el modelo crudo OR=0,528 (0,288-0,965), modelo ajustado 1 OR=0,496 (0,268-0,916) y modelo ajustado 2 OR=0,495 (0,265- 0,924) Conclusión: El consumo ≥ 2 porciones al dia de frutas es un factor protector para un buen IMC en estudiantes universitarios chilenos de educacion fisica.

  15. Report from a forum on US heart allocation policy.

    PubMed

    Kobashigawa, J A; Johnson, M; Rogers, J; Vega, J D; Colvin-Adams, M; Edwards, L; Meyer, D; Luu, M; Reinsmoen, N; Dipchand, A I; Feldman, D; Kormos, R; Mancini, D; Webber, S

    2015-01-01

    Since the latest revision in US heart allocation policy (2006), the landscape and volume of transplant waitlists have changed considerably. Advances in mechanical circulatory support (MCS) prolong survival, but Status 1A mortality remains high. Several patient subgroups may be disadvantaged by current listing criteria and geographical disparity remains in waitlist time. This forum on US heart allocation policy was organized to discuss these issues and highlight concepts for consideration in the policy development process. A 25-question survey on heart allocation policy was conducted. Among attendees/respondents were 84 participants with clinical/published experience in heart transplant representing 51 US transplant centers, and OPTN/UNOS and SRTR representatives. The survey results and forum discussions demonstrated very strong interest in change to a further-tiered system, accounting for disadvantaged subgroups and lowering use of exceptions. However, a heart allocation score is not yet viable due to the long-term viability of variables (used in the score) in an ever-developing field. There is strong interest in more refined prioritization of patients with MCS complications, highly sensitized patients and those with severe arrhythmias or restrictive physiology. There is also strong interest in distribution by geographic boundaries modified according to population. Differences of opinion exist between small and large centers.

  16. [Oliver Sacks and literary neurology].

    PubMed

    Guardiola, Elena; Banos, Josep E

    2014-03-16

    Introduccion. La literatura medica de divulgacion intenta poner al alcance del publico general temas medicos en un lenguaje desprovisto, en lo posible, de jerga medica para hacerlo mas inteligible. En el ambito de la neurologia, su complejidad hace dificil que los relatos de esta especialidad sean faciles de comprender para el publico sin formacion medica. Objetivo. El presente articulo revisa la obra de Oliver Sacks en el ambito de la neurologia dirigida al publico general; se presentan las principales caracteristicas y las situaciones clinicas que describe. Desarrollo. Se incluyen unas notas biograficas sobre Oliver Sacks y se analizan los 11 libros publicados a lo largo de los ultimos 40 años. Para cada uno de ellos, se realiza una contextualizacion historica y se comentan los aspectos mas destacados que justifican el interes de su lectura. En la mayoria de los casos, se explica la genesis de la obra, asi como sus caracteristicas mas relevantes. Conclusiones. La obra de Sacks contiene un amplio abanico de situaciones clinicas de gran interes que se explican, generalmente, con un lenguaje accesible para el publico general. A los neurologos les permite, ademas, una vision holistica de diversas situaciones clinicas con una discusion de sus componentes biograficos, historicos y evolutivos.

  17. Long-term outcomes of children after solid organ transplantation

    PubMed Central

    Kim, Jon Jin; Marks, Stephen D.

    2014-01-01

    Solid organ transplantation has transformed the lives of many children and adults by providing treatment for patients with organ failure who would have otherwise succumbed to their disease. The first successful transplant in 1954 was a kidney transplant between identical twins, which circumvented the problem of rejection from MHC incompatibility. Further progress in solid organ transplantation was enabled by the discovery of immunosuppressive agents such as corticosteroids and azathioprine in the 1950s and ciclosporin in 1970. Today, solid organ transplantation is a conventional treatment with improved patient and allograft survival rates. However, the challenge that lies ahead is to extend allograft survival time while simultaneously reducing the side effects of immunosuppression. This is particularly important for children who have irreversible organ failure and may require multiple transplants. Pediatric transplant teams also need to improve patient quality of life at a time of physical, emotional and psychosocial development. This review will elaborate on the long-term outcomes of children after kidney, liver, heart, lung and intestinal transplantation. As mortality rates after transplantation have declined, there has emerged an increased focus on reducing longer-term morbidity with improved outcomes in optimizing cardiovascular risk, renal impairment, growth and quality of life. Data were obtained from a review of the literature and particularly from national registries and databases such as the North American Pediatric Renal Trials and Collaborative Studies for the kidney, SPLIT for liver, International Society for Heart and Lung Transplantation and UNOS for intestinal transplantation. PMID:24860856

  18. [Smoking and multiple sclerosis].

    PubMed

    Arruti, Maialen; Castillo-Triviño, Tamara; Egüés, Nerea; Olascoaga, Javier

    2015-02-16

    Introduccion. La esclerosis multiple (EM) es una enfermedad autoinmune de etiologia compleja, hoy por hoy desconocida, en la que factores geneticos y ambientales determinan la susceptibilidad. En los ultimos años, el efecto del tabaco ha sido uno de los factores ambientales que ha emergido en la EM, y se ha asociado tanto a un aumento de la susceptibilidad como a un aumento de la progresion. Objetivo. Revisar la evidencia actual sobre el papel del tabaco en la EM. Desarrollo. Se incluye una actualizacion de los estudios publicados que han analizado distintos aspectos del tabaco en la EM: vias patogenicas implicadas, asociacion del tabaco y riesgo de EM, interaccion con otros factores de riesgo y efecto del tabaco en el curso de la enfermedad. Conclusiones. Los estudios observacionales demuestran que el tabaquismo incrementa de forma significativa el riesgo de EM (odds ratio ~ 1,5) y es un factor de riesgo independiente. Sin embargo, la EM es una enfermedad compleja y el aumento de riesgo por el tabaco puede diferir en funcion de la interaccion con otros factores geneticos y ambientales. El papel del tabaco como factor de progresion es mas controvertido, con resultados contradictorios y estudios de gran variabilidad, lo que dificulta establecer una conclusion firme. Los mecanismos por los que el tabaquismo modifica el riesgo y posiblemente la progresion de la enfermedad no son aun conocidos.

  19. [Musical hallucinations: perpetual music].

    PubMed

    Zabalza-Estévez, Ramón J

    2014-03-01

    Introduccion. Las alucinaciones musicales son un tipo de alucinacion auditiva prevalente en la poblacion no psiquiatrica, pero escasamente comunicada en la bibliografia neurologica. Ocurren con mayor frecuencia en la poblacion anciana, del sexo femenino y con perdida de audicion, pero su fisiopatologia esta por desentrañar. Casos clinicos. Se presentan seis casos (cinco mujeres y un hombre) de alucinaciones musicales diagnosticados en una consulta de neurologia general en un lapso de tiempo de cinco años. En cinco de ellos concurria la hipoacusia en mayor o menor grado y uno estaba desencadenado por la pentoxifilina. En su mayoria, el contenido musical de las alucinaciones provenia de experiencias musicales vividas en la infancia y juventud. En los casos sometidos a tratamiento farmacologico la respuesta fue pobre; sin embargo, una vez explicada a los pacientes la benignidad del cuadro y su desvinculacion con patologia psicotica, el grado de aceptacion del sintoma fue bueno. Conclusiones. Las alucinaciones musicales son una patologia fronteriza entre la neurologia, la otorrinolaringologia y la psiquiatria poco conocida, que, con frecuencia, se vincula erroneamente a la enfermedad mental. Es fundamental explicar a pacientes y familiares el caracter no necesariamente psiquiatrico de este sintoma, asi como conocer la potencialidad que tienen algunos farmacos de uso comun para generarlo.

  20. El Proyecto Gémini: informe actualizado y técnica de observación

    NASA Astrophysics Data System (ADS)

    Sahade, J.; Lapasset, E.; Levato, H.

    Se describirá la situación actual en lo que se refiere al desarrollo del Proyecto Gémini en cuanto a su estructura, faz constructiva y programación general. Se informará sobre los planes a desarrollar en el tiempo de verificación científica y puesta a punto del instrumental, a partir de la primera imagen que se obtenga con el telescopio Gemini Norte. Se presentará, además, el plan operativo para observar con los telescopios Gemini tal cual está concebido hasta la fecha, describiéndose el proceso desde el mismo momento en que un investigador decide presentar una propuesta para observar con uno de los telescopios, hasta el archivo y derechos de propiedad sobre los datos. Se decribe también el ``soft" denominado Observing Tool (OT) que es clave en la planificación científica de Gemini y que puede ser utilizado ``off-line" en cualquier PC con un entorno windows.

  1. [Atypical ganglioglioma with BRAF V600E mutation: a case report and review of the literature].

    PubMed

    Martinez-Ricarte, F; Martinez-Saez, E; Cicuendez, M; Cordero, E; Auger, C; Toledo, M; Radoi, A; Sahuquillo, J

    2016-05-16

    Introduccion. Los gangliogliomas son tumores raros que afectan a pacientes jovenes, aparecen predominantemente en el lobulo temporal y suelen comenzar con crisis epilepticas. Histologicamente corresponden a un grado I de malignidad, con una forma anaplasica catalogada como de grado III en la clasificacion de la Organizacion Mundial de la Salud (OMS) de 2007. Sin embargo, existen tumores que no cumplen criterios de uno u otro grado y que presentan claras diferencias pronosticas respecto a los de grado I. Estos tumores corresponderian a gangliogliomas atipicos (grado II), no contemplados en la citada clasificacion. Desde el punto de vista molecular, la alteracion mas conocida en los gangliogliomas es la mutacion de BRAF V600E, que confiere peor pronostico a la lesion. La posibilidad de utilizar tratamientos dirigidos a esta proteina mutada otorga una especial relevancia a esta alteracion. Caso clinico. Varon de 21 años, intervenido de un ganglioglioma en dos ocasiones, en el que el examen neuropatologico objetivo caracteristicas histologicas compatibles con un grado de malignidad intermedio (grado II) con mutacion positiva a BRAF. Conclusiones. El caso presentado, junto con los descritos previamente en la bibliografia, reabre las controversias sobre la definicion de los gangliogliomas en la clasificacion de la OMS de 2007, y apoya el hecho de que la proxima clasificacion de la OMS deberia volver a incluir los gangliogliomas atipicos (grado II) e integrar posibles mutaciones geneticas y alteraciones moleculares.

  2. Two-stage method for purification of ceruloplasmin based on its interaction with neomycin.

    PubMed

    Sokolov, A V; Kostevich, V A; Romanico, D N; Zakharova, E T; Vasilyev, V B

    2012-06-01

    A two-stage chromatography that yields highly purified ceruloplasmin (CP) from human plasma and from rat and rabbit serum is described. The isolation procedure is based on the interaction of CP with neomycin, and it provides a high yield of CP. Constants of inhibition by gentamycin, kanamycin, and neomycin of oxidase activity of CP in its reaction with p-phenylenediamine were assayed. The lowest K(i) for neomycin (11 µM) corresponded to the highest specific adsorption of CP on neomycin-agarose (10 mg CP/ml of resin). Isolation of CP from 1.4 liters of human plasma using ion-exchange chromatography on UNO-Sphere Q and affinity chromatography on neomycin-agarose yields 348 mg of CP with 412-fold purification degree. Human CP preparation obtained with A(610)/A(280) ~ 0.052 contained neither immunoreactive prothrombin nor active thrombin. Upon storage at 37°C under sterile conditions, the preparation remained stable for two months. Efficient preparation of highly purified CP from rat and rabbit sera treated according to a similar protocol suggests the suitability of our method for isolation of CP from plasma and serum of other animals. The yield of CP in three separate purifications was no less than 78%.

  3. A factor converting viable but nonculturable Vibrio cholerae to a culturable state in eukaryotic cells is a human catalase

    PubMed Central

    Senoh, Mitsutoshi; Hamabata, Takashi; Takeda, Yoshifumi

    2015-01-01

    In our previous work, we demonstrated that viable but nonculturable (VBNC) Vibrio cholerae O1 and O139 were converted to culturable by coculture with eukaryotic cells. Furthermore, we isolated a factor converting VBNC V. cholerae to culturable (FCVC) from a eukaryotic cell line, HT-29. In this study, we purified FCVC by successive column chromatographies comprising UNO Q-6 anion exchange, Bio-Scale CHT2-1 hydroxyapatite, and Superdex 200 10/300 GL. Homogeneity of the purified FCVC was demonstrated by SDS-PAGE. Nano-LC MS/MS analysis showed that the purified FCVC was a human catalase. An experiment of RNAi knockdown of catalase mRNA from HT-29 cells and treatment of the purified FCVC with a catalase inhibitor, 3-amino-1,2,4-triazole confirmed that the FCVC was a catalase. A possible role of the catalase in converting a VBNC V. cholerae to a culturable state in the human intestine is discussed. PMID:25974870

  4. The Conference Proceedings of the 2003 Air Transport Research Society (ATRS) World Conference, Volume 5

    NASA Technical Reports Server (NTRS)

    Bowen, Brent (Editor); Gudmundsson, Sveinn (Editor); Oum, Tae (Editor)

    2003-01-01

    The UNO Aviation Institute Monograph Series began in 1994 as a key component of the education outreach and information transfer missions of the Aviation Institute and the NASA Nebraska Space Grant & EPSCoR Programs. The series is an outlet for aviation materials to be indexed and disseminated through an efficient medium. Publications are welcome in all aspects of aviation. Publication formats may include, but are not limited to, conference proceedings, bibliographies, research reports, manuals, technical reports, and other documents that should be archived and indexed for future reference by the aviation and world wide communities. The Conference proceedings of the 2003 Air Transport Research Society (ATRS) world conference, volume 5 is presented. The topics include: 1) The Temporal Configuration of Airline Networks in Europe; 2) Determination and Applications of Environmental Costs at Different Sized Airports-Aircraft Noise and Engine Emissions; 3) Cost Effective Measures to Reduce CO2 Emissions in the Air Freight Sector; 4) An Assessment of the Sustainability of Air Transport System: Quantification of Indicators; 5) Regulation, Competition and Network Evolution in Aviation; 6) Regulation in the Air: Price and Frequency Cap; 7) Industry Consolidation and Future Airline Network Structures in Europe; 8) Application of Core Theory to the U.S. Airline Industry; 9) Air Freight Transshipment Route Choice Analysis; 10) A Fuzzy Approach of the Competition on Air Transport Market; and 11) Developing Passenger Demand Models for International Aviation from/to Egypt: A Case Study of Cairo Airport and Egyptair.

  5. [Spanish validation of the Iowa Rating Scale for Personality Change (IRSPC) for the appraisal of changes in personality in patients with acquired brain injury].

    PubMed

    Guallart-Balet, María; Jiménez-Cortés, Marta P; Tuquet-Calvo, Helena; Pelegrín-Valero, Carmelo; Olivera-Pueyo, Javier; Benabarre-Ciria, Sergio; Tirapu-Ustárroz, Javier

    2015-01-01

    Introduccion. La Iowa Rating Scale for Personality Change (IRSPC) presenta una serie de caracteristicas (enfasis en las funciones motivacionales y emocionales, evaluacion de las funciones ejecutivas 'cognitivas' en la vida cotidiana, estimacion de la personalidad premorbida, valoracion de la fiabilidad del informador) que hacen muy interesante su utilizacion tanto en la clinica como en la investigacion. Objetivo. Validar en castellano la IRSPC para la evaluacion de los 'cambios de personalidad' secundarios a las lesiones cerebrales de la corteza prefrontal en general y del area ventromedial en particular. Pacientes y metodos. Tras el proceso de traduccion y adaptacion de la guia de la escala al castellano, se realizo un estudio de validacion con 31 pacientes con daño cerebral traumatico y se obtuvieron unos resultados de fiabilidad muy adecuados. Resultados. Los resultados obtenidos al medir la consistencia interna de la IRSPC y los coeficientes de fiabilidad interobservadores y test-retest apoyan dicha afirmacion. La validez del instrumento es confirmada por la validez concurrente (comparandolo con el inventario neuropsiquiatrico) y la validez de constructo (comparando las puntuaciones de los pacientes antes y despues del traumatismo). Conclusiones. La IRSPC es un instrumento fiable y valido para la exploracion clinica, en el contexto de una evaluacion integral de los sintomas derivados de las enfermedades neurologicas en general, y en particular de aquellas en las que se encuentra involucrada la corteza prefrontal ventromedial.

  6. [Chromosomal abnormalities in patients from Obstetrics and Gynaecology hospital].

    PubMed

    Hernández-Herrera, Ricardo Jorge; Rojas-Patlán, Luz; Garza-Pérez, Rosa María; Dávila-Rodríguez, Martha; Cortés-Gutiérrez, Elva Irene; García-Rodríguez, Emerson Odón; Hernández-Hernández, Roberto Raúl

    2014-01-01

    INTRODUCCIÓN: las anormalidades cromosómicas se presentan en 2 a 4 % de los recién nacidos y causan 20 % de las muertes en el primer año de vida. Su prevalencia es de uno por cada 500 a 1000 recién nacidos vivos. Pueden ser numéricas o estructurales y afectar a los cromosomas autosómicos o sexuales. Se presentan en 1 a 3 % de la población general y en 6 a 7 % de los individuos con anomalías congénitas. MÉTODOS: estudio descriptivo en el que se incluyeron todos los resultados citogenéticos de cariotipos tomados de sangre periférica de adultos y neonatos. Se evaluó la prevalencia de polimorfismos y alteraciones cromosómicas en derechohabientes del Hospital de Ginecoobstetricia 23 del Instituto Mexicano del Seguro Social, en Monterrey, Nuevo León.

  7. Difusión de Arnold en un modelo simple

    NASA Astrophysics Data System (ADS)

    Cincotta, P. M.; Nuñez, J. A.; Miloni, O.

    Investigadores como Merritt, Valluri, Pfenniger o Contopoulos (por citar los más relevantes) consideran seriamente la hipótesis que la difusión de Arnold juega un rol importante en la evolución dinámica de los sistemas estelares y planetarios. Sin embargo no existe ninguna evidencia. El mayor problema para investigar fenómenos como éste es que uno debe estudiar numéricamente sistemas multidimensionales (más de dos grados de libertad) y visualizar de alguna manera el espacio de fases (más de cuatro dimensiones). Más complicado aún es el caso de difusión de Arnold, donde deben considerarse tiempos de movimiento extremadamente largos y tratar con parámetros exponencialmente pequeños. El propósito de este trabajo es estudiar, en un modelo simple 3D, la existencia o no de difusión de Arnold mediante experimentos numéricos y estimaciones analíticas. Siguiendo los trabajos de Cincotta (2000) y Cincotta, Nuñez y Simo (2000), aquí se pretende ``visualizar" la difusión y, a la vez, determinar la escala de tiempo en la que ésta se podría manifestar. Este trabajo es el escalón inicial para luego abordar este problema en modelos.

  8. [Spanish translation and validation of the Postural Assessment Scale for Stroke Patients (PASS) to assess balance and postural control in adult post-stroke patients].

    PubMed

    Cabanas-Valdés, Rosa; Girabent-Farrés, Monserrat; Cánovas-Vergé, David; Caballero-Gómez, Fernanda M; Germán-Romero, Ana; Bagur-Calafat, Caritat

    2015-02-16

    Introduccion. En los ultimos años, la Postural Assessment Scale for Stroke Patients (PASS) se ha convertido en la escala mas utilizada para valorar el equilibrio y el control postural en pacientes adultos que han sufrido un ictus, especialmente en la fase aguda y subaguda. Objetivo. Traducir y validar la PASS para la poblacion española como instrumento de valoracion del equilibrio y el control postural en pacientes adultos postictus. Pacientes y metodos. Se tradujo al español la version original francesa de la PASS; dicha version fue consensuada por un equipo de expertos. Posteriormente se hizo una retrotraduccion al frances y se envio al autor de la escala, el cual aprobo dicha version. Seguidamente se evaluo la fiabilidad intra e interobservador; para ello se llevaron a cabo cuatro mediciones a 60 pacientes postictus, a partir de una videograbacion. Dos de estas mediciones fueron realizadas por el mismo observador, y la tercera y cuarta, por un segundo y tercer observadores. Resultados. Los valores obtenidos referidos a la puntuacion total de la escala reflejan un indice de fiabilidad del 0,999; tambien muestran una fiabilidad superior a 0,90 en cada uno de los items, tanto en las comparaciones intraobservador como interobservador, y una consistencia interna del 0,94. Conclusion. La version española de la PASS es valida y fiable para valorar el equilibrio y el control postural en pacientes adultos postictus.

  9. [Translation and validation of the Egen Klassifikation scale for the Spanish population: functional assessment for non-ambulatory individuals with Duchenne's muscular dystrophy and spinal muscular atrophy].

    PubMed

    Fagoaga, Joaquín; Girabent-Farrés, Montserrat; Bagur-Calafat, Caritat; Febrer, Anna; Steffensen, Birgit F

    2013-06-01

    Introduccion. La escala Egen Klassifikation (EK) es un cuestionario que valora la capacidad funcional de personas con distrofia muscular de Duchenne y atrofia muscular espinal no ambulantes y que estan en silla de ruedas. Objetivo. Traducir y validar la EK para la poblacion espanola, como instrumento de medicion de la capacidad funcional en dichos pacientes. Pacientes y metodos. Se realiza, en primer lugar, una traduccion-retrotraduccion de la EK en la poblacion espanola y, posteriormente, se practica el estudio de fiabilidad de la version traducida al espanol de dicha escala. Se llevan a cabo tres mediciones a 30 pacientes con edades comprendidas entre 4 y 67 anos. Dos de estas mediciones se realizan por el mismo observador, y la tercera, por un segundo observador, para evaluar la concordancia intra e interobservador. Resultados. Los valores obtenidos referidos a la puntuacion total de los items de la escala, suma EK, reflejan un indice de fiabilidad del 0,995. Tambien muestran una fiabilidad superior a 0,86 en cada uno de los items, tanto en las observaciones intra como interobservador. Conclusiones. La version espanola de la EK es un instrumento valido y fiable para la poblacion espanola, como herramienta de medicion de la capacidad funcional en pacientes con distrofia muscular de Duchenne y atrofia muscular espinal no ambulantes y que estan en silla de ruedas.

  10. [Leprosy--a stigma in the 21st century].

    PubMed

    Falus, Orsolya

    2011-02-13

    For the initiation of the French journalist Raoul Follereau in 1954 the UNO inaugurated the Leprosy Day (Martyr's Day) that is celebrated on the last Sunday of January every year. Although the bacterium that causes leprosy was isolated by the Norwegian scientist Gerhard Henrik Armauer Hansen in 1873 and from 1982 this disease can be cured with a special pharmaceutical complex, still 219.826 new leprous are detected on Earth every year, according to the data published in August, 2010 by WHO-experts. Ancient Chinese and Hindu source-strings from 600 B. C. are referring to leprosy, however, the disease was imported by the army of Alexander the Great from India around 327-326 B. C. Even the Old and the New Testament from the Holy Bible are mentioning leprosy in several details. During the Middle Ages the Military and Hospitaller Order of St. Lazarus of Jerusalem, established in the Holy Land in 72 A. D., did pioneer work in nursing leprous. In the process of time the medical attendance concerning leprous was organized in special hospitals called "leprosoriums" built on river-banks. Special office and even services were organized for the treatment and isolation of the people infected. Although medical science has prevailed against leprosy, and almost simultaneously even jurisprudence defended the patients' rights via legislation, still mankind can regrettably not get rid of this disease that stigmatizes seriously.

  11. [Nutrition and child development II; a comparison of physical development in two school children groups with different income level (Rev Clin Esp 1944; 12:155-164) ].

    PubMed

    Grande Covián, F; Rof Carballo, J; Jiménez García, F

    2014-09-01

    El estudio comparativo de dos grupos de niños en edad escolar y de nivel económico diferente demuestra que los que pertenecen a un suburbio madrileño económicamente pobre sufren un retraso en el crecimiento que se caracteriza por una talla y un peso inferiores en relación con la edad. El retraso del peso corporal es proporcionalmente mayor al de la talla. Cuando se calcula según WETZEL la edad que teóricamente corresponde al desarrollo corporal de estos niños se observa un retraso de 2,94 años para una edad término medio de 10,14 años. El retraso global del desarrollo somático representa por tanto el 29 por 100 de la edad cronológica media. Este retraso en el desarrollo debe atribuirse principalmente a causas dietéticas y no solo a carencias específicas, sino sobre todo a insuficiencia cuantitativa en la dieta consumida. Desde el punto de vista cualitativo es probablemente la falta de leche en la dieta uno de los más importantes factores en la génesis de este trastorno del desarrollo.

  12. [Valutare le esperienze positive e negative: la validazione di una nuova misura del benessere in una popolazione italiana].

    PubMed

    Corno, Giulia; Molinari, Guadalupe; Baños, Rosa Maria

    2016-01-01

    RIASSUNTO. Lo scopo del presente studio è quello di esplorare le proprietà psicometriche di uno strumento di misurazione dell'affetto, la Scala di Esperienze Positive e Negative (SPANE), all'interno di una popolazione italiana. Gli esiti dell'analisi fattoriale confermativa comprovano l'attesa struttura a due fattori, sentimenti positivi e negativi. Le correlazioni con altre dimensioni (per es., ansia, depressione, affetto, aspettative future) confermano i risultati ottenuti con le precedenti versioni della scala: affetto negativo, ansia, depressione e aspettative future negative correlano positivamente con la subscala di esperienze negative e negativamente con la subscala di esperienze positive dello SPANE. In conclusione, i risultati del nostro studio dimostrano che la versione italiana dello SPANE presenta caratteristiche psicometriche simili a quelle mostrate dalla versione orginale e da successive validazioni dello strumento in altre lingue. La scala presenta, inoltre, affidabilità e validità fattoriale. Lo SPANE è un indice utile dal punto di vista clinico che può fornire informazioni rilevanti circa l'esperienza emotiva e il benessere della persona. Nonostante ulteriori studi siano necessari per confermare le caratteristiche psicometriche della scala, la presente validazione della versione italiana dello SPANE può contribuire ad ampliare la ricerca nell'ambito del benessere in una popolazione Italiana.

  13. Aggressive Recurrence of Primary Hepatic Epithelioid Haemangioendothelioma after Liver Transplantation

    PubMed Central

    Abdoh, Qusay A.; Abaalkhail, Faisal A.; Al Sebayel, Mohammed; Al-Hussaini, Hussa F.; Helmy, Hazem; Almansour, Mohamad; Elsiesy, Hussien A.

    2016-01-01

    HEHE is a rare neoplasm of vascular origin that occurs in the liver; UNOS reported a favorable outcome after liver transplantation in 110 patients with 1-year and 5-year survival of 80% and 64%. Case Report. A 40-year-old lady presented with a three-month history of right upper abdominal pain with nausea, vomiting, and significant loss of weight associated with scleral icterus and progressive abdominal distension. Examination revealed jaundice, hepatomegaly, and ascites. Serum bilirubin was 26.5 mg/dL and ALP was 552 CT. Abdomen and pelvis showed diffuse infiltrative neoplastic process of the liver with a mass effect and stretching of the hepatic and portal veins, in addition to bile duct dilatation. Viral hepatitis markers were negative and serum alpha fetoprotein was within reference range. Liver biopsy was consistent with HEHE, with positive endothelial markers (CD31, CD34, and factor VIII-related antigen). She underwent living related liver transplantation on June 2013 and was discharged after 20 days with normal liver enzymes. Four months later, she presented with diffuse disease recurrence. Liver biopsy confirmed disease recurrence; she received supportive treatment and unfortunately she died 2 weeks later. Conclusion. HEHE can have rapid and aggressive recurrence after liver transplantation. PMID:27446853

  14. Allosensitization does not alter post-transplant outcomes in pediatric patients bridged to transplant with a ventricular assist device.

    PubMed

    Castleberry, Chesney; Zafar, Farhan; Thomas, Tamara; Khan, Muhammad S; Bryant, Roosevelt; Chin, Clifford; Morales, David L S; Lorts, Angela

    2016-06-01

    Patients supported with a VAD are at increased risk for sensitization. We aimed to determine risk factors for sensitization as well as the impact of sensitization on post-transplant outcomes. The UNOS database (January 2004-June 2014) was used to identify patients (≤18 yrs) supported with a durable VAD. Rates and degree of sensitization in the VAD cohort were calculated. Post-transplant survival was determined comparing outcomes of sensitized vs. non-sensitized patients. There were 3097 patients included in the study; 19% (n = 579) were bridged with a VAD. Of these, 41.8% were sensitized vs. 29.9% of the patients who were not bridged with a VAD (p < 0.001). VAD was an independent predictor of sensitization (OR 2.05 [1.63-2.57]; p < 0.001). There was no difference in sensitization based on device type (continuous vs. pulsatile flow, p = 0.990). Post-transplant survival rates between the sensitized and non-sensitized VAD patients were not different, including patients with a PRA >50% and VAD patients with a positive DSC (p = 0.280 and 0.160, respectively). In conclusion, pediatric VAD patients are more likely to be sensitized, but there was no difference in sensitization based on device type. In addition, sensitization does not appear to impact outcomes. PMID:27102953

  15. [Risk of hemolysis in blood sampling from peripheral intravenous catheter: a literature review].

    PubMed

    Danielis, Matteo

    2014-01-01

    SCOPO. L’emolisi è uno dei fattori principali in grado di compromettere un campione di sangue. La disponibilità di un accesso venoso già posizionato spinge molti infermieri ad utilizzare questa via per il prelievo ematico, anche se è noto come questa tecnica sia associata a maggior incidenza di emolisi rispetto al prelievo con ago diretto. L’intento di questo lavoro è individuare gli interventi che prevengono il rischio di emolisi qualora il campione di sangue provenga da un ago cannula periferico. METODO. E’ stata condotta una revisione della letteratura attraverso la consultazione delle banche dati MEDLINE, CINAHL e Cochrane database of Systematic Reviews. RISULTATI. Sono stati selezionati 15 articoli. Fattori quali il materiale e il calibro del catetere venoso periferico (CVP), la presenza di ostruzioni, la sede anatomica, la permanenza del laccio emostatico, la difficoltà di posizionamento dell’ago cannula, il volume della provetta utilizzata e le abilità dell’operatore sono determinanti nel rischio di emolisi del campione di sangue ottenuto dalla cannula periferica. In termine di costi e di preferenze del paziente, la tecnica del prelievo ematico da CVP è da preferirsi. CONCLUSIONI. I prelievi di sangue ottenuti da cannula periferica sono associati a maggiore rischio di emolisi. Tuttavia, prelevare un campione di sangue da CVP per effettuare un’analisi e, nel contempo, ridurre il rischio di emolisi è possibile se vengono seguiti alcuni accorgimenti.

  16. Survival outcomes scores (SOFT, BAR, and Pedi-SOFT) are accurate in predicting post-liver transplant survival in adolescents.

    PubMed

    Conjeevaram Selvakumar, Praveen Kumar; Maksimak, Brian; Hanouneh, Ibrahim; Youssef, Dalia H; Lopez, Rocio; Alkhouri, Naim

    2016-09-01

    SOFT and BAR scores utilize recipient, donor, and graft factors to predict the 3-month survival after LT in adults (≥18 years). Recently, Pedi-SOFT score was developed to predict 3-month survival after LT in young children (≤12 years). These scoring systems have not been studied in adolescent patients (13-17 years). We evaluated the accuracy of these scoring systems in predicting the 3-month post-LT survival in adolescents through a retrospective analysis of data from UNOS of patients aged 13-17 years who received LT between 03/01/2002 and 12/31/2012. Recipients of combined organ transplants, donation after cardiac death, or living donor graft were excluded. A total of 711 adolescent LT recipients were included with a mean age of 15.2±1.4 years. A total of 100 patients died post-LT including 33 within 3 months. SOFT, BAR, and Pedi-SOFT scores were all found to be good predictors of 3-month post-transplant survival outcome with areas under the ROC curve of 0.81, 0.80, and 0.81, respectively. All three scores provided good accuracy for predicting 3-month survival post-LT in adolescents and may help clinical decision making to optimize survival rate and organ utilization. PMID:27478012

  17. [Prospective study on the effect of the influence of holiday periods in the weight during a low-calory dietetic treatment].

    PubMed

    García, Cándido Gabriel; Berná, Amparo; Sebastià, Natividad; Soriano, José Miguel

    2013-11-01

    Introducción: El sobrepeso y la obesidad constituyen, tanto en Europa como en España, uno de los mayores problemas de Salud Pública puesto que se asocian a factores de riesgo cardiovascular y a la aparición de otras patologías. Según la SEEDO la prevalencia de obesidad en la sociedad española está cerca del 25 %. Además del estudio de nuestro estilo de vida y hábitos incorporados a las costumbres cotidianas, resultaría interesante evaluar cómo influyen en la ganancia de peso total anual los excesos realizados durante muchas festividades, que en muchos casos se suelen prolongar más allá de los días oficialmente festivos. Material y métodos: Estudio prospectivo, de carácter descriptivo a un total de 258 pacientes (95 varones y 163 mujeres) correspondientes a personas con un tratamiento para la reducción del peso corporal, como mínimo, de un mes. Se estudiaron siete periodos festivos. Resultados: Considerando todos los pacientes, se observó una correlación lineal significativa (p.

  18. Semi-discrete approximations to nonlinear systems of conservation laws; consistency and L(infinity)-stability imply convergence

    NASA Technical Reports Server (NTRS)

    Tadmor, Eitan

    1988-01-01

    A convergence theory for semi-discrete approximations to nonlinear systems of conservation laws is developed. It is shown, by a series of scalar counter-examples, that consistency with the conservation law alone does not guarantee convergence. Instead, a notion of consistency which takes into account both the conservation law and its augmenting entropy condition is introduced. In this context it is concluded that consistency and L(infinity)-stability guarantee for a relevant class of admissible entropy functions, that their entropy production rate belongs to a compact subset of H(loc)sup -1 (x,t). One can now use compensated compactness arguments in order to turn this conclusion into a convergence proof. The current state of the art for these arguments includes the scalar and a wide class of 2 x 2 systems of conservation laws. The general framework of the vanishing viscosity method is studied as an effective way to meet the consistency and L(infinity)-stability requirements. How this method is utilized to enforce consistency and stability for scalar conservation laws is shown. In this context we prove, under the appropriate assumptions, the convergence of finite difference approximations (e.g., the high resolution TVD and UNO methods), finite element approximations (e.g., the Streamline-Diffusion methods) and spectral and pseudospectral approximations (e.g., the Spectral Viscosity methods).

  19. Solve the organ shortage: let the bidding begin!

    PubMed

    Kevorkian, J

    2001-01-01

    Commercialization of transplantable human organs is the only sure way to end the crisis of their supply. This is best accomplished by implementing a free, non-profit, nationwide, ultimately global online auction market. It should be independent of the current United Network of Organ Sharing (UNOS) system dealing solely with altruistic donation, and of governmental, sectarian, academic, and other bureaucratic control. The operation of such an auction is described with a hypothetical example. An included provision guarantees equity for poor, uninsured, and indigent recipients. Money accrued can be substantial, and would be disbursed by established formula, with major portions going to donors' families and to special funds to be used to bid for the poor and to defray costs incurred by them. As the organ shortage eases, bid prices should drop, resulting perhaps in eventual altruistic donation. Objections to commericalization based on ethics, bodily sanctity, inequity, pecuniary greed, and the slippery slope tocsin are nullified by cogent arguments and examples. The current situation has worsened despite so-called required request laws, proposed token payments to cover funeral expenses for donor families, and extensive media advertising to spur altruistic donation. Prohibitive national and state laws must be rescinded for the sake of more than 60,000 patients now on lengthening waiting lists. A profession committed to saving lives is duty-bound to endorse, help implement, and participate in an auction system dedicated to that end.

  20. [Epilepsy and cognition: the role of antiepileptic drugs].

    PubMed

    García-Peñas, Juan José; Fournier-Del Castillo, M Concepción; Domínguez-Carral, Jana

    2014-02-24

    Introduccion. Multiples y muy diversos factores se relacionan con la alteracion cognitiva en la epilepsia, incluyendo el efecto adverso directo de los farmacos antiepilepticos (FAE). El uso de los FAE requiere de un riguroso equilibrio entre riesgo y beneficio para conseguir asi el mejor control de las crisis con el menor numero de efectos adversos neurocognitivos. Objetivo. Analizar los efectos adversos cognitivos generales y especificos de los FAE de primera, segunda y tercera generacion. Desarrollo. Todos los FAE disponibles pueden producir efectos adversos cognitivos, que son mas frecuentes en politerapia, con dosis totales altas y niveles sericos elevados. Las alteraciones mas comunes son el descenso de la capacidad de reaccion y de la velocidad de procesamiento con afectacion concomitante de la memoria, la atencion y el lenguaje. Sin embargo, hay gran controversia sobre la existencia o no de perfiles cognitivos especificos para cada uno de los distintos FAE y se dispone de una informacion contradictoria al respecto por la inadecuada metodologia de los estudios comparativos. Conclusiones. Los efectos adversos cognitivos de los FAE son frecuentes y pueden afectar negativamente la tolerabilidad, el cumplimiento y el mantenimiento a largo plazo del tratamiento antiepileptico. Se debe considerar el potencial efecto adverso cognitivo de los distintos FAE a la hora de elegir un tratamiento y es importante reconocer e identificar precozmente estos efectos adversos y saber como pueden afectar a los pacientes.

  1. [Combined treatment with antiepileptic drugs. Andalusian Epilepsy Guide 2015].

    PubMed

    Sánchez-Álvarez, Juan C; Ramos-Lizana, Julio; Machado-Casas, Irene S; Serrano-Castro, Pedro J; Martínez-Antón, Jacinto L; Ruiz-Giménez, Jesús

    2015-04-16

    Objetivo. Elaborar unas recomendaciones basadas en evidencias cientificas y en consenso de los autores y revisores, que aborden las cuestiones basicas acerca de la combinacion de farmacos antiepilepticos. Desarrollo. Un comite de 11 expertos pertenecientes a la Sociedad Andaluza de Epilepsia (SAdE), constituido por siete neurologos, tres neuropediatras y un neurologo-neurofisiologo, todos con especial competencia en epilepsia, promovieron la realizacion de una revision bibliografica exhaustiva entre 55 expertos en epilepsia pertenecientes a la SAdE, en busca de evidencias disponibles relacionadas con temas diagnosticos o terapeuticos en epilepsia. La guia se estructuro en 35 capitulos. Uno de los capitulos abordo la combinacion de farmacos antiepilepticos en el tratamiento de la epilepsia. Basandose en 77 citas bibliograficas y en la opinion consensuada de autores y revisores, se confecciono una serie de recomendaciones de facil aplicacion. Conclusiones. La combinacion de farmacos antiepilepticos en los pacientes con epilepsia cuyas crisis no estan controladas con un solo farmaco puede conseguir en numerosas ocasiones que entren en remision. Existe una serie de factores relacionados con el tipo de epilepsia y caracteristicas del paciente y con los farmacos antiepilepticos que se van a utilizar en combinacion que pueden favorecer el exito terapeutico. Se debe evitar en lo posible el sobretratamiento con la combinacion de farmacos antiepilepticos. Los resultados de esta revision proveen unas recomendaciones sobre el tratamiento combinado con farmacos antiepilepticos, basadas en evidencias cientificas y en el consenso de los autores, utiles, sencillas y aplicables en los diferentes niveles asistenciales.

  2. [School failure and pediatric epilepsy].

    PubMed

    García-Peñas, Juan José

    2015-02-25

    Introduccion. El fracaso escolar, los trastornos de aprendizaje y las alteraciones de conducta son mas frecuentes en el niño epileptico que en la poblacion general. El objetivo de este trabajo es estudiar los diversos factores que pueden afectar al rendimiento escolar del niño con epilepsia. Desarrollo. Los aspectos que condicionan el fracaso escolar y las alteraciones de aprendizaje en el niño epileptico son muy heterogeneos, e incluyen factores propios de la epilepsia, factores de indole psicosocial y factores derivados del tratamiento antiepileptico. La edad de comienzo de la epilepsia, el tipo de sindrome epileptico, la etiologia de la epilepsia y la respuesta al tratamiento antiepileptico son algunos de los factores mas importantes. Todos los farmacos antiepilepticos disponibles pueden producir efectos adversos cognitivos, que son mas frecuentes en politerapia, con dosis totales altas y niveles sericos elevados. Conclusiones. Una buena valoracion de cada uno de los posibles factores implicados es fundamental para garantizar un mejor pronostico. El desarrollo de alteraciones en el rendimiento escolar en un niño con epilepsia debe conducir a una inmediata y exhaustiva evaluacion diagnostica y terapeutica.

  3. [Detection of cytomegalovirus by real-time PCR in HIV-positive plasm].

    PubMed

    Ruiz-Tachiquín, Martha Eugenia; Gómez-Delgado, Alejandro; Valdez-Salazar, Hilda Alicia; Aguilera, Penélope

    2014-01-01

    INTRODUCCIÓN: el citomegalovirus es responsable de infecciones persistentes, generalmente asintomáticas en personas sanas pero que en ausencia de una respuesta inmune efectiva puede causar enfermedad severa, por ello es muy importante su detección temprana en los individuos con trastornos de la inmunidad. El objetivo de esta investigación fue hacer un análisis del límite de detección, sensibilidad y concordancia de la reacción en cadena de la polimerasa (PCR) en punto final con los obtenidos con la PCR en tiempo real. MÉTODOS: se realizó un estudio transversal con 43 muestras de plasma humano positivas al virus de la inmunodeficiencia humano, provenientes de individuos de 18 o más años de edad, de uno u otro sexo. Todas las muestras tuvieron una carga viral-VIH mayor a 100 000 copias/mL. Para la PCR en punto final se empleó un método comercial para identificar UL54 (gen viral blanco) y para la PCR en tiempo real se amplificaron fragmentos de los genes UL54 (gen temprano) y UL83 (gen tardío) del citomegalovirus humano.

  4. Evolución de planetas gigantes y posibilidades de su detección directa

    NASA Astrophysics Data System (ADS)

    Brunini, A.; Benvenuto, O. G.

    Desde la reciente detección de planetas gigantes orbitando estrellas cercanas de tipo solar por medio de efecto Doppler, uno de los principales problemas, en cuanto al estudio de los sistemas planetarios extrasolares, se refiere a la posibilidad de obtener evidencia directa de su existencia. Esto parece ser factible gracias a que en un futuro cercano entrarán en operación algunos telescopios especialmente adecuados a estos propósitos. Por tal motivo, hemos comenzado desde hace un tiempo un esfuerzo en cuanto al estudio de la evolución planetaria. A tales efectos hemos adaptado el código de evolución estelar de nuestro Observatorio al caso planetario. Las principales diferencias entre el caso estelar y el planetario se encuentran en la ecuación de estado. A tales fines hemos incluído la reciente ecuación de estado de Saumon, Chabrier y Van Horn, las opacidades radiativas de Guillot et al., procesos de quema de Deuterio, etc. También se ha considerado la posible existencia de fases de hielo y roca en el interior planetario. Por el momento hemos despreciado los efectos de la rotación planetaria. Con este código hemos computado la evolución de planetas con masas desde 10 hasta 0.3 masas de Júpiter. Utilizando nuestros resultados numéricos discutimos la detectabilidad de estos objetos en condiciones realistas.

  5. [Not Available].

    PubMed

    Curilem Gatica, Cristian; Almagià Flores, Atilio; Rodríguez Rodríguez, Fernando; Yuing Farias, Tuillang; Berral de la Rosa, Francisco; Martínez Salazar, Cristian; Jorquera Aguilera, Carlos; Bahamondes Ávila, Carlos; Soís Urra, Patricio; Cristi Montero, Carlos; Bruneau Chávez, José; Pinto Aguilante, Juan; Niedmann Brunet, Luis

    2016-06-30

    El índice de masa corporal (IMC) otorga uno de los índices más usados para determinar el estado nutricional de la población a nivel mundial, donde a pesar de existir recomendaciones claras y definidas para su interpretación como el sexo, edad, raza, entre otros, normalmente se estandariza su clasificación, independiente de las variables, aumentando el error en el resultado y en la clasificación del estado nutricional.El uso de la composición corporal a través de la antropometría entrega mayor información que el IMC, siendo la masa grasa y la masa muscular los principales resultados útiles.Este artículo presenta una revisión de las ecuaciones existentes y propone aquellas más simples y con menor error de estimación para ser usadas como una herramienta que reemplace o complemente al IMC, favoreciendo una mejor comprensión e interpretación del estado nutricional y nivelde actividad física en niños y adolescentes.

  6. [Phenotypic variations in Aicardi-Goutieres syndrome caused by RNASEH2B gene mutations: report of two new cases].

    PubMed

    Ortiz-Madinaveitia, Saturnino; Conejo-Moreno, David; López-Pisón, Javier; Peña-Segura, José Luis; Serrano-Madrid, M Luisa; Durán-Palacios, Ingrid C; Peláez-Cabo, Pilar

    2016-02-16

    Introduccion. El sindrome de Aicardi-Goutieres es un trastorno inmunitario raro debido a mutaciones en siete genes que codifican proteinas llamadas TREX1, el complejo ribonucleasa H2, SAMHD1, ADAR e IFIH1 (MAD5), las cuales estan implicadas en el metabolismo de los acidos nucleicos. A continuacion se presentan dos nuevos casos por mutacion en el gen RNASEH2B, uno de los cuales presenta una mutacion no descrita hasta la fecha. Casos clinicos. Caso 1: varon que consulto porque desde los 5 meses, coincidiendo con cuadros febriles de repeticion, presentaba perdida de los items madurativos adquiridos hasta la fecha. Caso 2: niño de 4 meses que desde los 2 meses mostraba gran irritabilidad con dificultades en la alimentacion, asociado a un grave retraso psicomotor. En ambos casos se constato un aumento de las pterinas en el liquido cefalorraquideo, principalmente de la neopterina, con calcificaciones en los ganglios basales. El diagnostico se confirmo mediante secuenciacion del gen RNASEH2B; el caso 2 presentaba una mutacion no descrita en la literatura medica. Conclusiones. Los casos corresponden a la descripcion clasica realizada por Aicardi-Goutieres. Debe tenerse en cuenta este sindrome ante un paciente con un cuadro de encefalopatia subaguda de comienzo en el primer año de vida, distonia/espasticidad en grado variable e importante afectacion/regresion del desarrollo psicomotor, especialmente si asocia aumento de las pterinas (neopterina) en el liquido cefalorraquideo y calcificaciones en los ganglios basales.

  7. Actividad en la superficie lunar: fenómenos lunares transitorios

    NASA Astrophysics Data System (ADS)

    Roa, A. F. C.

    Los fenómenos lunares transitorios que se presentan en la superficie de la Luna son raros, poco frecuentes y de corta duración, lo que origina que exista poca información al respecto. Esto hace evidente la importancia de estudiarlos con detalle. Han sido registrados como nubes muy brillantes a base de gases residuales de la pasada actividad geológica lunar, de diferentes colores (amarillas, anaranjadas, rojas), de acuerdo con el tiempo de duración cambian su color, con tamaños de pocos kilómetros hasta de centenares de kilómetros. Por lo general, se presentan en ciertos lugares, como cráteres (Aristarco, Plato, Kepler, etc.), y en los bordes de los mares lunares (mar de la Fecundidad, zona de los montes Alpes, etc.).Variando su tiempo de exposición puede ser de unos pocos segundos hasta un poco más de una hora.

  8. Comprehensive quality evaluation of Chishao by HPLC.

    PubMed

    Zaiyou, Jian; Wenquan, Wang; Guifang, Xu; Li, Meng; Junling, Hou

    2013-01-01

    Objetivo: El propósito de este artículo es la evaluación cualitativa extensa de Chishao. Métodos: En el experimento de este trabajo, se establecen los espectros de identificación de Chishao en todas las localizaciones mediante RP-HPLC y el método del análisis de componentes principales con las áreas pico de RPHPLC. Resultados: La calidad de Chishao en el norte de China o del procedente de Paeonia lactiflora es mejor que la de otras localizaciones o procedente de P. obovata, P. mairei y P. anomala. Los resultados son congruentes con la impresión tradicional de la calidad de esta planta. Estos resultados indican que el análisis de los componentes principales (ACP) puede utilizarse como método eficaz y económico para evaluar la calidad de Chishao y podría aplicarse a otras plantas medicinales chinas. Conclusiones: Dada la complicada base de la eficacia de la Medicina tradicional china (MTC), un método como el ACP para diversos componentes químicos parece ser más adecuado para la evaluación de la calidad de la MTC en comparación con la determinación de un único o unos pocos agentes químicos.

  9. Aggressive Recurrence of Primary Hepatic Epithelioid Haemangioendothelioma after Liver Transplantation.

    PubMed

    Abdoh, Qusay A; Alnajjar, Asma M; Abaalkhail, Faisal A; Al Sebayel, Mohammed; Al-Hussaini, Hussa F; Al-Hamoudi, Waleed K; Helmy, Hazem; Almansour, Mohamad; Elsiesy, Hussien A

    2016-01-01

    HEHE is a rare neoplasm of vascular origin that occurs in the liver; UNOS reported a favorable outcome after liver transplantation in 110 patients with 1-year and 5-year survival of 80% and 64%. Case Report. A 40-year-old lady presented with a three-month history of right upper abdominal pain with nausea, vomiting, and significant loss of weight associated with scleral icterus and progressive abdominal distension. Examination revealed jaundice, hepatomegaly, and ascites. Serum bilirubin was 26.5 mg/dL and ALP was 552 CT. Abdomen and pelvis showed diffuse infiltrative neoplastic process of the liver with a mass effect and stretching of the hepatic and portal veins, in addition to bile duct dilatation. Viral hepatitis markers were negative and serum alpha fetoprotein was within reference range. Liver biopsy was consistent with HEHE, with positive endothelial markers (CD31, CD34, and factor VIII-related antigen). She underwent living related liver transplantation on June 2013 and was discharged after 20 days with normal liver enzymes. Four months later, she presented with diffuse disease recurrence. Liver biopsy confirmed disease recurrence; she received supportive treatment and unfortunately she died 2 weeks later. Conclusion. HEHE can have rapid and aggressive recurrence after liver transplantation. PMID:27446853

  10. Strength of copper alloys in high temperature environment

    NASA Astrophysics Data System (ADS)

    Nomura, Y.; Suzuki, R.; Saito, M.

    2002-12-01

    The first wall of ITER is expected to be hot isostatic pressing (HIP) bonded structure of copper-alloy/SS316. Firstly, fracture toughness and crack propagation tests were performed on DS-Cu and DS-Cu/SS316 HIP joints at ambient temperature and 573 K T. Yamada, M. Uno, M. Saito, Fall Meeting of the Atomic Energy Society of Japan, vol. I, 1998, p. 187 (in Japanese). JIC values of DS-Cu and DS-Cu/SS316 decreased significantly at 573 K. In crack propagation test, DS-Cu lost its ductility at 573 K. Secondly, we performed fracture toughness tests on CuCrZr and CuCrZr/CuCrZr, CuCrZr/SS316 HIP joints at ambient and 573 K. CuCrZr base metal had higher JIC values than DS-Cu. Concerning CuCrZr/CuCrZr and CuCrZr/SS316 HIP joint, its JIC value decreased to less than that of CuCrZr base metal.

  11. [Benign myoclonic epilepsy in infancy: natural history and behavioral and cognitive outcome].

    PubMed

    Domínguez-Carral, Jana; García-Peñas, Juan José; Pérez-Jiménez, M Ángeles; Fournier-Del Castillo, M Concepción; Carreras-Sáez, Inmaculada; Jiménez-Echevarría, Saioa

    2014-02-01

    Introduccion. La epilepsia mioclonica benigna del lactante (EMBL) es un sindrome electroclinico de caracteristicas homogeneas y bien definidas, considerado clasicamente de buen pronostico. Sin embargo, en los ultimos años se han publicado estudios con resultados variables en cuanto a evolucion neuropsicologica. Objetivo. Analizar la evolucion natural y el pronostico neurocognitivo y conductual de los pacientes con EMBL. Pacientes y metodos. Estudio retrospectivo de 10 pacientes con EMBL, con un periodo de seguimiento de mas de cinco años, durante los cuales se realizo una evaluacion neurocognitiva y conductual. Resultados. En el 60% de los pacientes las crisis se controlaron con acido valproico en monoterapia, y el 80% no presento nuevas crisis durante su seguimiento. El cociente intelectual de la cohorte se situo entre 74 y 93; tres pacientes tuvieron un cociente intelectual en rango de inteligencia limite, y seis, en rango de inteligencia media-baja. Nueve pacientes cumplieron criterios de trastorno por deficit de atencion/hiperactividad y dos asociaban otro trastorno del aprendizaje, uno de ellos trastorno de aprendizaje no verbal, y el otro, trastorno especifico de la lectoescritura. Todos los pacientes presentaron datos de pobre coordinacion motriz y visuoespacial, y tres fueron diagnosticados de trastorno de conducta. Conclusiones. El termino 'benigno' en la EMBL debe utilizarse con precaucion en cuanto a su pronostico neurocognitivo y conductual. El inicio precoz y un peor control de las crisis podrian suponer factores de riesgo de evolucion neuropsicologica desfavorable.

  12. Nuevos escenarios de la migración México-Estados Unidos. Las consecuencias de la guerra antiinmigrante

    PubMed Central

    MASSEY, Douglas S.; PREN, Karen A.; DURAND, Jorge

    2010-01-01

    La historia de la migración México-Estados Unidos se caracteriza por una serie de periodos durante los cuales los patrones migratorios se transforman y evolucionan como respuesta a los cambios en la política migratoria de Estados Unidos. En la década de 1990 se dio uno de estos cambios, lo que provocó el paso de la ‘era de la contradicción’ a la ‘era de la marginalización’. Actualmente, un gran número de migrantes indocumentados permanecen al margen de la ley, precisamente en un periodo en el que las penas se han incrementado y la persecución ha alcanzado niveles récord. De manera cada vez más notoria, los migrantes indocumentados, por la represión interna y fronteriza, quedan obligados a romper los lazos que los vinculaban con sus lugares de destino, pero al mismo tiempo se sienten cada vez más extraños en una tierra donde la aplicación de políticas antiinmigrantes es cosa de todos los días, lo que los sitúa en una posición de marginalización y gran vulnerabilidad. PMID:21209790

  13. The 1986-87 atomic mass predictions

    NASA Astrophysics Data System (ADS)

    Haustein, P. E.

    1987-12-01

    A project to perform a comprehensive update of the atomic mass predictions has recently been concluded and will be published shortly in Atomic Data and Nuclear Data Tables. The project evolved from an ongoing comparison between available mass predictions and reports of newly measured masses of isotopes throughout the mass surface. These comparisons have highlighted a variety of features in current mass models which are responsible for predictions that diverge from masses determined experimentally. The need for a comprehensive update of the atomic mass predictions was therefore apparent and the project was organized and began at the last mass conference (AMCO-VII). Project participants included: Pape and Anthony; Dussel, Caurier and Zuker; Möller and Nix; Möller, Myers, Swiatecki and Treiner; Comay, Kelson, and Zidon; Satpathy and Nayak; Tachibana, Uno, Yamada and Yamada; Spanier and Johansson; Jänecke and Masson; and Wapstra, Audi and Hoekstra. An overview of the new atomic mass predictions may be obtained by written request.

  14. Cerebral networks of sustained attention and working memory: a functional magnetic resonance imaging study based on the Continuous Performance Test.

    PubMed

    Bartés-Serrallonga, M; Adan, A; Solé-Casals, J; Caldú, X; Falcón, C; Pérez-Pàmies, M; Bargalló, N; Serra-Grabulosa, J M

    2014-04-01

    Introduccion. Uno de los paradigmas mas utilizados en el estudio de la atencion es el Continuous Performance Test (CPT). La version de pares identicos (CPT-IP) se ha utilizado ampliamente para evaluar los deficits de atencion en los trastornos del neurodesarrollo, neurologicos y psiquiatricos. Sin embargo, la localizacion de la activacion cerebral de las redes atencionales varia significativamente segun el diseño de resonancia magnetica funcional (RMf) usado. Objetivo. Diseñar una tarea para evaluar la atencion sostenida y la memoria de trabajo mediante RMf para proporcionar datos de investigacion relacionados con la localizacion y el papel de estas funciones. Sujetos y metodos. El estudio conto con la participacion de 40 estudiantes, todos ellos diestros (50%, mujeres; rango: 18-25 años). La tarea de CPT-IP se diseño como una tarea de bloques, en la que se combinaban los periodos CPT-IP con los de reposo. Resultados. La tarea de CPT-IP utilizada activa una red formada por regiones frontales, parietales y occipitales, y estas se relacionan con funciones ejecutivas y atencionales. Conclusiones. La tarea de CPT-IP utilizada en nuestro trabajo proporciona datos normativos en adultos sanos para el estudio del sustrato neural de la atencion sostenida y la memoria de trabajo. Estos datos podrian ser utiles para evaluar trastornos que cursan con deficits en memoria de trabajo y en atencion sostenida.

  15. TRANSMISIÓN VERTICAL DE HTLV-1 EN EL PERÚ

    PubMed Central

    Villaverde, Jorge Alarcón; Romaní, Franco Romaní; Torres, Silvia Montano; Zunt, Joseph R.

    2012-01-01

    La infección por el virus linfotrópico humano de células T tipo 1 (HTLV-1) ha sido descrita en muchas áreas del mundo, como en los países del Caribe, Japón, África, Oceanía y en Sudamérica. En la presente revisión definimos la endemicidad del HTLV-1 en el país, planteando cuatro criterios epidemiológicos. Luego discutimos el tema central de la revisión: la transmisión vertical del HTLV-1, que en nuestro país sería uno de los principales mecanismos de transmisión. Dentro del desarrollo de este aspecto en particular, presentamos una estimación de la tasa de transmisión vertical y los factores de riesgo asociados con la transmisión vertical sobre la base de una revisión exhaustiva de estudios nacionales y extranjeros. Con esta revisión pretendemos dar una primera aproximación al estudio de la trasmisión vertical de HTLV-1, un aspecto poco estudiado en nuestro medio. PMID:21537777

  16. Relevamiento de HI en el Hemisferio Austral

    NASA Astrophysics Data System (ADS)

    Arnal, E. M.; Bajaja, E.; Morras, R.; Pöppel, W. G. L.

    Un nuevo relevamiento de HI de todo el Hemisferio Austral, comprendido entre -90o <= δ <= -25o, está siendo observado con la antena I del IAR. El mismo es realizado con alta sensibilidad (r.m.s.<= 0.07 K) y alta resolución espectral (1 Km/s). Un total de ~50000 posiciones en el cielo serán observadas, espaciadas en una grilla (lxb) de (0.5o x 0.5o). El intervalo de velocidades cubierto en este relevamiento abarca el rango -450 km/s a +450 km/s en el sistema LSR. Esta base de datos será corregida por efectos de ``stray radiation''. Al presente se ha observado ~70% del total del relevamiento. El mismo es complementario de uno similar realizado en el Hemisferio Norte por Hartman y Burton (1996), con cubrimiento espacial, sensibilidad, resoluciones espaciales y en velocidad, similares a los del IAR. El objetivo final de ambos relevamientos es disponer de una base de datos uniforme en todo el cielo.

  17. Cross-sectional study to evaluate the associated factors with differences between city and districts secondary school students of the southeast of Spain (Murcia) for their adherence to the Mediterranean diet.

    PubMed

    Doménech-Asensi, Guillermo; Sánchez-Martínez, Álvaro; Ros-Berruezo, Gaspar

    2014-12-17

    Introducción: La “dieta Mediterránea” está reconocida como uno de los patrones dietéticos más saludables pero, incluso en los países mediterráneos, su seguimiento está disminuyendo. La adolescencia es un período crucial durante el cual se producen cambios en los hábitos alimentarios. Objetivos: El objetivo de este estudio fue evaluar la adherencia a la dieta Mediterránea (ADM) de los estudiantes de educación secundaria y evaluar las posibles diferencias entre los residentes en la ciudad o en las pedanías. Métodos: Se diseñó un estudio transversal con 379 estudiantes. Para evaluar la ADM se facilitó el cuestionario KIDMED. Los estudiantes se clasificaron de acuerdo al sexo y la residencia (ciudad o pedanía). Resultados: El índice de masa corporal (IMC) fue en global de 22.34 en hombres y 20.79 en mujeres (p.

  18. [Response to treatment with interferon beta in patients with multiple sclerosis. Validation of the Rio Score].

    PubMed

    Rio, J; Rovira, A; Blanco, Y; Sainz, A; Perkal, H; Robles, R; Ramio-Torrenta, Ll; Diaz, R M; Arroyo, R; Urbaneja, P; Fernandez, O; Garcia-Merino, J A; Reyes, M P; Oreja-Guevara, C; Prieto, J M; Izquierdo, G; Olascoaga, J; Alvarez-Cermeno, J C; Simon, E; Pujal, B; Comabella, M; Montalban, X

    2016-08-16

    Introduccion. Se han propuesto diferentes criterios de respuesta al tratamiento con interferon beta, y el Rio Score es uno de los mas utilizados. El objetivo de este estudio fue validar la utilidad del Rio Score en una cohorte independiente. Pacientes y metodos. Estudio multicentrico, prospectivo y longitudinal de pacientes con esclerosis multiple remitente recurrente tratados con interferon beta. Los pacientes fueron clasificados basandose en la presencia de brotes, lesiones activas (nuevas en T2 o lesiones que captaban gadolinio) en la resonancia magnetica, incremento confirmado de la discapacidad o combinaciones de estas variables (brotes, incremento en la Expanded Disability Status Scale y lesiones activas) tras un año de tratamiento. Se utilizo un analisis de regresion con el fin de identificar las variables de prediccion de respuesta despues de un seguimiento de tres años. Resultados. Se incluyo a 249 pacientes con esclerosis multiple remitente recurrente. El modelo logistico confirmo que la presencia de dos (odds ratio = 6,6; IC 95% = 2,7-16,1; p < 0,0001) o tres (odds ratio = 8,5; IC 95% = 1,6-46; p < 0,01) variables positivas durante el primer año de tratamiento conferia un riesgo significativo de actividad (brotes o progresion) en los siguientes dos años. Conclusiones. Se confirma, en una cohorte independiente, la utilidad del Rio Score para identificar a pacientes con un mayor riesgo de desarrollar actividad clinica o progresion de la discapacidad durante el tratamiento con interferon beta.

  19. [Not Available].

    PubMed

    Fort Casamartina, Eduard; Arribas Hortiguela, Lorena; Bleda Pérez, Carmen; Muñoz Sánchez, Carme; Peiro Martínez, Imma; Perayre Badía, María; Clopés Estela, Ana

    2016-06-03

    Durante la última década, el conocimiento de nuevos mecanismos implicados en el desarrollo del cáncer ha permitido el diseño de nuevos fármacos para su tratamiento y la mayor parte de ellos son fármacos que se administran por vía oral. Uno de los principales problemas de los pacientes oncohematológicos es la desnutrición, que suele tener causas multifactoriales (de la propia enfermedad, de los pacientes y de los diferentes tratamientos administrados). Para minimizar el impacto de la desnutrición es necesaria una intervención nutricional, ya sea adaptando la dieta o mediante la instauración de soporte nutricional artificial, en función de la gravedad de cada caso. En cualquier paciente que esté recibiendo un tratamiento oncológico hay que evaluar las posibles interacciones que pueden existir con el soporte nutricional instaurado, ya sea dieta oral, suplementación oral o nutrición enteral. Estas interacciones pueden disminuir la eficacia, aumentar la toxicidad de los tratamientos o producir déficits nutricionales. Se detallan las principales interacciones que se pueden producir, las interacciones entre los tratamientos oncológicos y el soporte nutricional.

  20. Pediatric Cardiac Transplantation Using Hearts Previously Refused for Quality: A Single Center Experience

    PubMed Central

    Easterwood, Rachel; Singh, Rakesh K.; McFeely, Eric D.; Zuckerman, Warren A.; Addonizio, Linda J.; Gilmore, Lisa; Beddows, Kimberly; Chen, Jonathan M.; Richmond, Marc E.

    2013-01-01

    Pediatric donor hearts are regularly refused for donor quality with limited evidence as to which donor parameters are predictive of poor outcomes. We compare outcomes of recipients receiving hearts previously refused by other institutions for quality with the outcomes of recipients of primarily-offered hearts. Data for recipients aged ≤ 18 and their donors were obtained. Specific UNOS refusal codes were used to place recipients into refusal and non-refusal groups; demographics, morbidity, and mortality were compared. Kaplan-Meier analysis with log-rank test was used to determine differences in graft survival. A multivariable Cox proportional hazards model was constructed to determine independent risk factors for post-operative mortality. From 7/1/2000-4/30/2011, 182 recipients were transplanted and included for analysis. 130 received a primarily-offered heart; 52 received a refused heart. No difference in post-operative complications or graft survival between the two groups (p=0.355) was found. Prior refusal was not an independent risk factor for recipient mortality. Analysis of this large pediatric cohort examining outcomes with quality-refused hearts shows that in-hospital morbidity and long-term mortality for recipients of quality-refused hearts is no different than recipients of primarily-offered hearts, suggesting that donor hearts previously refused for quality are not necessarily unsuitable for transplant and often show excellent outcomes. PMID:23648205

  1. A Simple Experimental Setup for Teaching Additive Colors with Arduino

    NASA Astrophysics Data System (ADS)

    Carvalho, Paulo Simeão; Hahn, Marcelo

    2016-04-01

    The result of additive colors is always fascinating to young students. When we teach this topic to 14- to 16-year-old students, they do not usually notice we use maximum light quantities of red (R), green (G), and blue (B) to obtain yellow, magenta, and cyan colors in order to build the well-known additive color diagram of Fig. 1. But how about using different light intensities for R, G, and B? What colors do we get? This problem of color mixing has been intensively discussed for decades by several authors, as pointed out by Ruiz's "Color Addition and Subtraction Apps" work and the references included therein. An early LED demonstrator for additive color mixing dates back to 1985, and apps to illustrate color mixing are available online. In this work, we describe an experimental setup making use of a microcontroller device: the Arduino Uno. This setup is designed as a game in order to improve students' understanding of color mixing.

  2. An Arduino-Based Resonant Cradle Design with Infant Cries Recognition.

    PubMed

    Chao, Chun-Tang; Wang, Chia-Wei; Chiou, Juing-Shian; Wang, Chi-Jo

    2015-08-03

    This paper proposes a resonant electric cradle design with infant cries recognition, employing an Arduino UNO as the core processor. For most commercially available electric cradles, the drive motor is closely combined with the bearing on the top, resulting in a lot of energy consumption. In this proposal, a ball bearing design was adopted and the driving force is under the cradle to increase the distance from the object to fulcrum and torque. The sensors are designed to detect the oscillation state, and then the force is driven at the critical time to achieve the maximum output response while saving energy according to the principle of resonance. As for the driving forces, the winding power and motors are carefully placed under the cradle. The sensors, including the three-axis accelerometer and infrared sensor, are tested and applied under swinging amplitude control. In addition, infant cry recognition technology was incorporated in the design to further develop its functionality, which is a rare feature in this kind of hardware. The proposed nonlinear operator of fundamental frequency (f0) analysis is able to identify different types of infant cries. In conclusion, this paper proposes an energy-saving electric cradle with infant cries recognition and the experimental results demonstrate the effectiveness of this approach.

  3. Developing hydrological monitoring networks with Arduino

    NASA Astrophysics Data System (ADS)

    Buytaert, Wouter; Vega, Andres; Villacis, Marcos; Moulds, Simon

    2015-04-01

    The open source hardware platform Arduino is very cost-effective and versatile for the development of sensor networks. Here we report on experiments on the use of Arduino-related technologies to develop and implement hydrological monitoring networks. Arduino Uno boards were coupled to a variety of commercially available hydrological sensors and programmed for automatic data collection. Tested sensors include water level, temperature, humidity, radiation, and precipitation. Our experiments show that most of the tested analogue sensors are quite straightforward to couple to Arduino based data loggers, especially if the electronic characteristics of the sensor are available. However, some sensors have internal digital interfaces, which are more challenging to connect. Lastly, tipping bucket rain gauges prove the most challenging because of the very specific methodology, i.e. registration of bucket tips instead of measurements at regular intervals. The typically low data generation rate of hydrological instruments is very compatible with available technologies for wireless data transmission. Mesh networks such as Xbee prove very convenient and robust for dispersed networks, while wifi is also an option for shorter distances and particular topographies. Lastly, the GSM shield of the Arduino can be used to transfer data to centralized databases. In regions where no mobile internet (i.e. 3G) connection is available, data transmission via text messages may be an option, depending on the bandwidth requirements.

  4. High-resolution, three-dimensional, and contrast-enhanced ultrasonographic findings in diseases of the eye().

    PubMed

    Sconfienza, L M; Lacelli, F; Ardemagni, A; Perrone, N; Bertolotto, M; Padolecchia, R; Serafini, G

    2010-12-01

    Sommario OBIETTIVI: Illustrare i reperti ecocontrastografici (CEUS) e di ecografia in tre dimensioni (3D) di un ampio spettro di patologie del globo oculare, confrontandole con l’ecografia ad alta risoluzione (HRUS). INTRODUZIONE: La CEUS è un valido strumento nella valutazione di numerosi distretti corporei. Nella patologia del bulbo oculare esistono una serie di situazioni in cui la CEUS può essere dirimente o molto utile. IMAGING: In questo lavoro presentiamo uno spettro di lesioni traumatiche (distacchi di retina e della coroide) e di patologia maligna del bulbo oculare (melanoma della coroide, tumori intra- ed extra conali) valutate con CEUS ed ecografia 3D. I risultati sono stati confrontati con HRUS. L’orbitopatiadistiroidea è stata esclusa dal presente studio. CONCLUSIONE: CEUS gioca un ruolo centrale nella diagnosi differenziale tra distacchi di retina (vascolari) e membrane vitreali (avascolari). Inoltre CEUS è molto utile nella valutazione dei tumori bulbari, nel percorso terapeutico del melanoma della coroide e nella valutazione della neovascolarizzazione delle lesioni orbitarie. HRUS è molto efficace nel riconoscimento di lesioni traumatiche e non traumatiche, ma non è utile nella valutazione delle lesioni della parete dell’orbita. L’utilizzo delle ricostruzioni 3D ha aumentato la confidenza diagnostica della CEUS. Infine, CEUS ha un ottimo rapporto costo-beneficio e può essere utilizzata quando la TC e la RM non possono essere eseguite.

  5. [Empathy and moral judgements in the elderly population].

    PubMed

    Ortega, Helga; Cacho, Raúl; López-Goñi, José J; Tirapu-Ustárroz, Javier

    2014-08-01

    Introduccion. La cognicion social se refiere a los procesos mentales que operan en situaciones de interaccion social y facilitan el ajuste y el funcionamiento en tales escenarios. Objetivo. Estudiar la respuesta empatica en dos grupos de personas mayores y su relacion con la inteligencia emocional y el juicio moral. Sujetos y metodos. Participaron 60 sujetos divididos en dos grupos de 30 cada uno, que cumplimentaron una bateria de pruebas: Trait Meta-Mood Scale-24, cuestionario disejecutivo, indice de reactividad interpersonal (IRI) y dilemas morales. Resultados. En la dimension de toma de perspectiva del IRI, el grupo de edad avanzada puntuo significativamente menos que el grupo de mediana edad (U = 279; p < 0,05). En el resto de variables no se encontraron diferencias estadisticamente significativas. Conclusiones. Los resultados muestran la ausencia de un deficit generalizado en la cognicion social en la muestra de ancianos evaluada. Sin embargo, se aprecian diferencias en funcion de la edad en la empatia y en el rendimiento ejecutivo: con el paso del tiempo tiene lugar un deterioro progresivo en la teoria de la mente y un declive en la capacidad empatica general. Con respecto a la inteligencia emocional, los ancianos evaluados manifiestan una adecuada percepcion y comprension de sus emociones, aunque informan de una peor capacidad para manejar y regular sus afectos.

  6. Estudio de distintos modelos de protuberancias solares

    NASA Astrophysics Data System (ADS)

    Cirigliano, D.; Rovira, M.; Mauas, P.

    En este trabajo presentamos perfiles de líneas del CaII, MgII y HeI calculados para distintos modelos de protuberancias, y los comparamos con observaciones obtenidas por los satélites OSO 8 y SOHO. Para obtener las poblaciones de los distintos niveles de los átomos, utilizamos un código numérico que combina las ecuaciones de transporte de radiación y equilibrio estadístico en un único sistema de ecuaciones no lineal. Los modelos básicos que consideramos para las protuberancias consisten en placas homogéneas y unidimensionales apoyadas sobre la superficie del Sol. Dichas placas se hallan estratificadas en hebras y los modelos difieren entre sí en la temperatura y ancho de la placa, en la presión a la cual se halla el plasma y en el número de hebras. A partir de estos modelos se investiga cada uno de estos parámetros libres y como influyen en la atmósfera de las protuberancias solares y en el perfil de línea de cada especie estudiada, con el objetivo de determinar las condiciones en las que se halla el material atmosférico de estas protuberancias.

  7. Nuevas observaciones de 3C10 con el VLA*: estudio de la expansión

    NASA Astrophysics Data System (ADS)

    Reynoso, E. M.; Moffett, D. A.:; Dubner, G. M.; Giacani, E. B.; Reynolds, S. P.; Goss, W. M.; Dickel, J.

    Se presentan nuevos resultados sobre la expansión del remanente de la supernova de Tycho a lo largo de un intervalo de 10.9 años, comparando nuevas observaciones tomadas con el VLA a 1375 y 1635 MHz durante 1994 y 1995, con observaciones previas realizadas entre 1983 y 1984 (Dickel y col. ~1991 AJ 101, 2151), usando las mismas configuraciones, anchos de banda, calibradores y tiempos de integración. El coeficiente de expansión se calcula para sectores radiales de 4o de ancho cada uno, ajustando la correlación cruzada de las derivadas de los perfiles promedio para cada época. A partir de la expansión medida, se estima el índice (parámetro de expansión) de la ley potencial R∝ tm como m≡ d ln R/d ln t . Este valor se compara con coeficientes teóricos para diferentes fases evolutivas de remanentes de supernova.

  8. [Otoneurologic and cardiovascular abnormalities associated to carbon monoxide poisoning in occupational exposed workers].

    PubMed

    Vargas-Martínez, Alma; Reyna-López, Víctor; Rodríguez-Ortega, Francisco

    2014-01-01

    INTRODUCCIÓN: aun cuando la Ley Federal del Trabajo incluye la intoxicación por monóxido de carbono, su registro es escaso en el ámbito laboral. El objetivo de esta investigación fue determinar la relación de trastornos otoneurológicos y cardiovasculares con la intoxicación por monóxido de carbono en el ambiente de trabajo, para la adecuada fundamentación de su diagnóstico como enfermedad de trabajo. MÉTODOS: estudio transversal y analítico de un grupo de asaderos que utilizaban leña y carbón para cocinar pollo, comparados con un grupo control (n = 54). La investigación se realizó de abril a noviembre de 2012, con trabajadores de uno u otro sexo, entre los 18 y 74 años de edad; no se excluyó a quienes fumaban, pero no se incluyó a quienes manifestaron antecedente de cardiopatía isquémica Se obtuvieron niveles de carboxihemoglobina en aire espirado, audiometría tonal y electrocardiograma de 12 derivaciones.

  9. Kidney transplantation in previous heart or lung recipients.

    PubMed

    Lonze, B E; Warren, D S; Stewart, Z A; Dagher, N N; Singer, A L; Shah, A S; Montgomery, R A; Segev, D L

    2009-03-01

    Outcomes after heart and lung transplants have improved, and many recipients survive long enough to develop secondary renal failure, yet remain healthy enough to undergo kidney transplantation. We used national data reported to United Network for Organ Sharing (UNOS) to evaluate outcomes of 568 kidney after heart (KAH) and 210 kidney after lung (KAL) transplants performed between 1995 and 2008. Median time to kidney transplant was 100.3 months after heart, and 90.2 months after lung transplant. Renal failure was attributed to calcineurin inhibitor toxicity in most patients. Outcomes were compared with primary kidney recipients using matched controls (MC) to account for donor, recipient and graft characteristics. Although 5-year renal graft survival was lower than primary kidney recipients (61% KAH vs. 73.8% MC, p < 0.001; 62.6% KAL vs. 82.9% MC, p < 0.001), death-censored graft survival was comparable (84.9% KAH vs. 88.2% MC, p = 0.1; 87.6% KAL vs. 91.8% MC, p = 0.6). Furthermore, renal transplantation reduced the risk of death compared with dialysis by 43% for KAH and 54% for KAL recipients. Our findings that renal grafts function well and provide survival benefit in KAH and KAL recipients, but are limited in longevity by the general life expectancy of these recipients, might help inform clinical decision-making and allocation in this population.

  10. Big Data in Organ Transplantation: Registries and Administrative Claims

    PubMed Central

    Massie, Allan B.; Kucirka, Lauren; Segev, Dorry L.

    2015-01-01

    The field of organ transplantation benefits from large, comprehensive, transplant-specific national datasets available to researchers. In addition to the widely-used OPTN-based registries (the UNOS and SRTR datasets) and USRDS datasets, there are other publicly available national datasets, not specific to transplantation, which have historically been underutilized in the field of transplantation. Of particular interest are the Nationwide Inpatient Sample (NIS) and State Inpatient Databases (SID), produced by the Agency for Healthcare Research and Quality (AHRQ). The United States Renal Data System (USRDS) database provides extensive data relevant to studies of kidney transplantation. Linkage of publicly available datasets to external data sources such as private claims or pharmacy data provides further resources for registry-based research. Although these resources can transcend some limitations of OPTN-based registry data, they come with their own limitations, which must be understood to avoid biased inference. This review discusses different registry-based data sources available in the United States, as well as the proper design and conduct of registry-based research. PMID:25040084

  11. National Healthcare Delivery Systems Influence Lung Transplant Outcomes for Cystic Fibrosis.

    PubMed

    Merlo, C A; Clark, S C; Arnaoutakis, G J; Yonan, N; Thomas, D; Simon, A; Thompson, R; Thomas, H; Orens, J; Shah, A S

    2015-07-01

    Successful lung transplantation (LTx) depends on multiple components of healthcare delivery and performance. Therefore, we conducted an international registry analysis to compare post-LTx outcomes for cystic fibrosis (CF) patients using the UNOS registry in the United States and the National Health Service (NHS) Transplant Registry in the United Kingdom. Patients with CF who underwent lung or heart-lung transplantation in the United States or United Kingdom between January 1, 2000 and December 31, 2011 were included. The primary outcome was all-cause mortality. Kaplan-Meier analysis and Cox proportional hazards regression evaluated the effect of healthcare system and insurance on mortality after LTx. 2,307 US LTx recipients and 451 individuals in the United Kingdom were included. 894 (38.8%) US LTx recipients had publically funded Medicare/Medicaid insurance. US private insurance and UK patients had improved median predicted survival compared with US Medicare/Medicaid recipients (p < 0.001). In multivariable Cox regression, US Medicare/Medicaid insurance was associated with worse survival after LTx (US private: HR0.78,0.68-0.90,p = 0.001 and UK: HR0.63,0.41-0.97, p = 0.03). This study in CF patients is the largest comparison of LTx in two unique health systems. Both the United States and United Kingdom have similar early survival outcomes, suggesting important dissemination of best practices internationally. However, the performance of US public insurance is significantly worse and may put patients at risk.

  12. Central radio galaxies in groups: cavities, bubbles and the history of AGN heating

    NASA Astrophysics Data System (ADS)

    Giacintucci, S.; Venturi, T.; Raychaudhury, S.; Vrtilek, J.

    2008-10-01

    E' noto che le regioni centrali degli ammassi e gruppi di galassie costituiscono un ambiente in cui gas caldo e plasma radioemittente proveniente dalle galassie dominanti interagiscono tra loro. In particolare, si pensa che la radioemissione dell'AGN centrale ed i suoi possibili cicli di attivita', siano strettamente legati alla presenza di cavita' e "bubbles" nel gas intergalattico. Si presentera' lo status di un progetto osservativo effettuato con il Giant Metrewave Radio Telescope (GMRT, India) su di un campione di 18 gruppi di galassie, osservati a tre frequenze radio (235 MHz, 325 MHz e 610 MHz). Lo studio della morfologia radio degli AGN centrali e la relativa analisi spettrale permettono di ottenere stime sull'eta' di questi oggetti, e sulla loro energia totale, che a loro volta sono in relazione con le proprieta' X dei gruppi stessi. Per tutti gli oggetti del campione sono disponibili osservazioni Chandra di proprieta'. Per due oggetti del campione, 4C+24.36 (al centro di AWM04) e NGC741 (al centro di RSOG17) verra' presentato uno studio dettagliato.

  13. [Diffuse superficial siderosis of the central nervous system: four case reports and review of the literature].

    PubMed

    Calvo, Marta; de Miguel, Cristina; Pinel, Ana; Ortega, José M; Aladro, Yolanda

    2014-10-16

    Introduccion. La siderosis superficial difusa del sistema nervioso central (SNC) es una rara condicion debida a depositos de hemosiderina en las capas subpiales del cerebro y la medula espinal. La fuente de sangrado cronico o recurrente en el espacio subaracnoideo se detecta solo en un 50% de los casos. Los sintomas mas caracteristicos son ataxia cerebelosa e hipoacusia neurosensorial. Las secuencias eco de gradiente potenciadas en T2 de resonancia magnetica constituyen el metodo diagnostico de eleccion. Casos clinicos. Presentamos cuatro pacientes con siderosis superficial difusa del SNC relacionada con angiopatia amiloide, anticoagulacion oral, schwannoma del VIII par craneal y sin fuente de sangrado conocida en un caso. Dos pacientes desarrollaron ataxia cerebelosa; tres de ellos, episodios recurrentes de alteracion focal neurologica; uno, demencia; y el cuarto es un hallazgo radiologico. No se objetivo progresion clinica durante el seguimiento (2-11 años) en tres de ellos. El paciente con angiopatia amiloide evoluciono a demencia. Conclusiones. Los episodios recurrentes de alteracion focal neurologica son los sintomas mas frecuentes en nuestros casos de siderosis superficial difusa del SNC. La evolucion natural de esta condicion no se conoce bien y puede constituir un hallazgo radiologico.

  14. An Arduino-Based Resonant Cradle Design with Infant Cries Recognition

    PubMed Central

    Chao, Chun-Tang; Wang, Chia-Wei; Chiou, Juing-Shian; Wang, Chi-Jo

    2015-01-01

    This paper proposes a resonant electric cradle design with infant cries recognition, employing an Arduino UNO as the core processor. For most commercially available electric cradles, the drive motor is closely combined with the bearing on the top, resulting in a lot of energy consumption. In this proposal, a ball bearing design was adopted and the driving force is under the cradle to increase the distance from the object to fulcrum and torque. The sensors are designed to detect the oscillation state, and then the force is driven at the critical time to achieve the maximum output response while saving energy according to the principle of resonance. As for the driving forces, the winding power and motors are carefully placed under the cradle. The sensors, including the three-axis accelerometer and infrared sensor, are tested and applied under swinging amplitude control. In addition, infant cry recognition technology was incorporated in the design to further develop its functionality, which is a rare feature in this kind of hardware. The proposed nonlinear operator of fundamental frequency (f0) analysis is able to identify different types of infant cries. In conclusion, this paper proposes an energy-saving electric cradle with infant cries recognition and the experimental results demonstrate the effectiveness of this approach. PMID:26247947

  15. Units for quantities of dimension one

    NASA Astrophysics Data System (ADS)

    Dybkaer, René

    2004-02-01

    All quantities of dimension one are said to have the SI coherent derived unit "one" with the symbol '1'. (Single quotation marks are used here sometimes to indicate a quote, name, term or symbol; double quotation marks flag a concept when necessary.) Conventionally, the term and symbol may not be combined with the SI prefixes (except for the special terms and symbols for one and 1: radian, rad, and steradian, sr). This restriction is understandable, but leads to correct yet impractical alternatives and ISO deprecated symbols such as ppm or in some cases redundant combinations of units, such as mg/kg. "Number of entities" is dimensionally independent of the current base quantities and should take its rightful place among them. The corresponding base unit is "one". A working definition is given. Other quantities of dimension one are derived as fraction, ratio, efficiency, relative quantity, relative increment or characteristic number and may also use the unit "one", whether considered to be base or derived. The special term 'uno' and symbol 'u' in either case are proposed, allowing combination with SI prefixes.

  16. Kidneys at Higher Risk of Discard: Expanding the Role of Dual Kidney Transplantation

    PubMed Central

    Tanriover, B.; Mohan, S.; Cohen, D. J.; Radhakrishnan, J.; Nickolas, T. L.; Stone, P. W.; Tsapepas, D. S.; Crew, R. J.; Dube, G. K.; Sandoval, P. R.; Samstein, B.; Dogan, E.; Gaston, R. S.; Tanriover, J. N.; Ratner, L. E.; Hardy, M. A.

    2014-01-01

    Half of the recovered expanded criteria donor (ECD) kidneys are discarded in the United States. A new kidney allocation system offers kidneys at higher risk of discard, Kidney Donor Profile Index (KDPI) >85%, to a wider geographic area to promote broader sharing and expedite utilization. Dual kidney transplantation (DKT) based on the KDPI is a potential option to streamline allocation of kidneys which otherwise would have been discarded. To assess the clinical utility of the KDPI in kidneys at higher risk of discard, we analyzed the OPTN/UNOS Registry that included the deceased donor kidneys recovered between 2002 and 2012. The primary outcomes were allograft survival, patient survival and discard rate based on different KDPI categories (<80%, 80–90% and >90%). Kidneys with KDPI >90% were associated with increased odds of discard (OR = 1.99, 95% CI 1.74–2.29) compared to ones with KDPI <80%. DKTs of KDPI >90% were associated with lower overall allograft failure (HR = 0.74, 95% CI 0.62–0.89) and better patient survival (HR = 0.79, 95% CI 0.64–0.98) compared to single ECD kidneys with KDPI >90%. Kidneys at higher risk of discard may be offered in the up-front allocation system as a DKT. Further modeling and simulation studies are required to determine a reasonable KDPI cutoff percentile. PMID:24472195

  17. [Cardiovascular risk in children from 6 to 15 years with exogenous obesity].

    PubMed

    Escudero-Lourdes, Gabriela Virginia; Morales-Romero, Luz Viridiana; Valverde-Ocaña, Concepción; Velasco-Chávez, José Fernando

    2014-01-01

    INTRODUCCIÓN: el riesgo cardiovascular (RCV) es una epidemia creciente relacionada con hábitos alimentarios y estilo de vida que tiene como uno de sus grupos de riesgo a los niños obesos. El objetivo de este estudio es evaluar el RCV en la población infantil obesa, en un hospital de segundo nivel del Instituto Mexicano del Seguro Social en San Luis Potosí, México. MÉTODOS: estudio analítico con diseño transversal. Se incluyeron todos los niños obesos atendidos en el servicio de endocrinología durante un año. Se utilizó la escala Alústiza para medir el RCV. Las variables de estudio fueron: edad, sexo, índice de masa corporal, historia familiar de diabetes, obesidad, toxicomanías, presión arterial y colesterol. El RCV se correlacionó con los valores de colesterol HDL y glucosa por medio de chi cuadrada.

  18. Novel serine keratinase from Caldicoprobacter algeriensis exhibiting outstanding hide dehairing abilities.

    PubMed

    Bouacem, Khelifa; Bouanane-Darenfed, Amel; Zaraî Jaouadi, Nadia; Joseph, Manon; Hacene, Hocine; Ollivier, Bernard; Fardeau, Marie-Laure; Bejar, Samir; Jaouadi, Bassem

    2016-05-01

    The current paper reports on the purification of an extracellular thermostable keratinase (KERCA) produced from Caldicoprobacter algeriensis strain TH7C1(T), a thermophilic, anaerobic bacterium isolated from a hydrothermal hot spring in Algeria. The maximum keratinase activity recorded after 24-h of incubation at 50 °C was 21000 U/ml. The enzyme was purified by ammonium sulfate precipitation-dialysis and heat treatment (2h at 50 °C) followed by UNO Q-6 FPLC anion exchange chromatography, and submitted to biochemical characterization assays. Matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis revealed that the purified enzyme was a monomer with a molecular mass of 33246.10 Da. The sequence of the 23 N-terminal residues of KERCA showed high homology with those of bacterial keratinases. Optimal activity was achieved at pH 7 and 50 °C. The enzyme was completely inhibited by phenylmethanesulfonyl fluoride (PMSF) and diiodopropyl fluorophosphates (DFP), which suggests that it belongs to the serine keratinase family. KERCA displayed higher levels of hydrolysis and catalytic efficiency than keratinase KERQ7 from Bacillus tequilensis strain Q7. These properties make KERCA a potential promising and eco-friendly alternative to the conventional chemicals used for the dehairing of goat, sheep, and bovine hides in the leather processing industry. PMID:26812107

  19. [Not Available].

    PubMed

    Fort Casamartina, Eduard; Arribas Hortiguela, Lorena; Bleda Pérez, Carmen; Muñoz Sánchez, Carme; Peiro Martínez, Imma; Perayre Badía, María; Clopés Estela, Ana

    2016-01-01

    Durante la última década, el conocimiento de nuevos mecanismos implicados en el desarrollo del cáncer ha permitido el diseño de nuevos fármacos para su tratamiento y la mayor parte de ellos son fármacos que se administran por vía oral. Uno de los principales problemas de los pacientes oncohematológicos es la desnutrición, que suele tener causas multifactoriales (de la propia enfermedad, de los pacientes y de los diferentes tratamientos administrados). Para minimizar el impacto de la desnutrición es necesaria una intervención nutricional, ya sea adaptando la dieta o mediante la instauración de soporte nutricional artificial, en función de la gravedad de cada caso. En cualquier paciente que esté recibiendo un tratamiento oncológico hay que evaluar las posibles interacciones que pueden existir con el soporte nutricional instaurado, ya sea dieta oral, suplementación oral o nutrición enteral. Estas interacciones pueden disminuir la eficacia, aumentar la toxicidad de los tratamientos o producir déficits nutricionales. Se detallan las principales interacciones que se pueden producir, las interacciones entre los tratamientos oncológicos y el soporte nutricional. PMID:27269219

  20. Upgrade to the Cryogenic Hydrogen Gas Target Monitoring System

    NASA Astrophysics Data System (ADS)

    Slater, Michael; Tribble, Robert

    2013-10-01

    The cryogenic hydrogen gas target at Texas A&M is a vital component for creating a secondary radioactive beam that is then used in experiments in the Momentum Achromat Recoil Spectrometer (MARS). A stable beam from the K500 superconducting cyclotron enters the gas cell and some incident particles are transmuted by a nuclear reaction into a radioactive beam, which are separated from the primary beam and used in MARS experiments. The pressure in the target chamber is monitored so that a predictable isotope production rate can be assured. A ``black box'' received the analog pressure data and sent RS232 serial data through an outdated serial connection to an outdated Visual Basic 6 (VB6) program, which plotted the chamber pressure continuously. The black box has been upgraded to an Arduino UNO microcontroller [Atmel Inc.], which can receive the pressure data and output via USB to a computer. It has been programmed to also accept temperature data for future upgrade. A new computer program, with updated capabilities, has been written in Python. The software can send email alerts, create audible alarms through the Arduino, and plot pressure and temperature. The program has been designed to better fit the needs of the users. Funded by DOE and NSF-REU Program.

  1. Low-cost microcontroller platform for studying lymphatic biomechanics in vitro

    PubMed Central

    Kornuta, Jeffrey A.; Nipper, Matthew E.; Dixon, J. Brandon

    2012-01-01

    The pumping innate to collecting lymphatic vessels routinely exposes the endothelium to oscillatory wall shear stress and other dynamic forces. However, studying the mechanical sensitivity of the lymphatic endothelium remains a difficult task due to limitations of commercial or custom systems to apply a variety of time-varying stresses in vitro. Current biomechanical in vitro testing devices are very expensive, limited in capability, or highly complex; rendering them largely inaccessible to the endothelial cell biology community. To address these short-comings, the authors propose a reliable, low-cost platform for augmenting the capabilities of commercially available pumps to produce a wide variety of flow rate waveforms. In particular, the Arduino Uno, a microcontroller development board, is used to provide open-loop control of a digital peristaltic pump using precisely-timed serial commands. In addition, the flexibility of this platform is further demonstrated through its support of a custom-built cell-straining device capable of producing oscillatory strains with varying amplitudes and frequencies. Hence, this microcontroller development board is shown to be an inexpensive, precise, and easy-to-use tool for supplementing in vitro assays to quantify the effects of biomechanical forces on lymphatic endothelial cells. PMID:23178036

  2. Low-cost microcontroller platform for studying lymphatic biomechanics in vitro.

    PubMed

    Kornuta, Jeffrey A; Nipper, Matthew E; Dixon, J Brandon

    2013-01-01

    The pumping innate to collecting lymphatic vessels routinely exposes the endothelium to oscillatory wall shear stress and other dynamic forces. However, studying the mechanical sensitivity of the lymphatic endothelium remains a difficult task due to limitations of commercial or custom systems to apply a variety of time-varying stresses in vitro. Current biomechanical in vitro testing devices are very expensive, limited in capability, or highly complex; rendering them largely inaccessible to the endothelial cell biology community. To address these shortcomings, the authors propose a reliable, low-cost platform for augmenting the capabilities of commercially available pumps to produce a wide variety of flow rate waveforms. In particular, the Arduino Uno, a microcontroller development board, is used to provide open-loop control of a digital peristaltic pump using precisely timed serial commands. In addition, the flexibility of this platform is further demonstrated through its support of a custom-built cell-straining device capable of producing oscillatory strains with varying amplitudes and frequencies. Hence, this microcontroller development board is shown to be an inexpensive, precise, and easy-to-use tool for supplementing in vitro assays to quantify the effects of biomechanical forces on lymphatic endothelial cells.

  3. Psycho-physiological training approach for amputee rehabilitation.

    PubMed

    Dhal, Chandan; Wahi, Akshat

    2015-01-01

    Electromyography (EMG) signals are very noisy and difficult to acquire. Conventional techniques involve amplification and filtering through analog circuits, which makes the system very unstable. The surface EMG signals lie in the frequency range of 6Hz to 600Hz, and the dominant range is between the ranges from 20Hz to 150Hz. 1 Our project aimed to analyze an EMG signal effectively over its complete frequency range. To remove these defects, we designed what we think is an easy, effective, and reliable signal processing technique. We did spectrum analysis, so as to perform all the processing such as amplification, filtering, and thresholding on an Arduino Uno board, hence removing the need for analog amplifiers and filtering circuits, which have stability issues. The conversion of time domain to frequency domain of any signal gives a detailed data of the signal set. Our main aim is to use this useful data for an alternative methodology for rehabilitation called a psychophysiological approach to rehabilitation in prosthesis, which can reduce the cost of the myoelectric arm, as well as increase its efficiency. This method allows the user to gain control over their muscle sets in a less stressful environment. Further, we also have described how our approach is viable and can benefit the rehabilitation process. We used our DSP EMG signals to play an online game and showed how this approach can be used in rehabilitation.

  4. [Functional magnetic resonance imaging: a critical analysis of its technical, statistical and theoretical implications in human neuroscience].

    PubMed

    González-García, C; Tudela, P; Ruz, M

    2014-04-01

    Introduccion. La utilizacion de la resonancia magnetica funcional (RMf) ha supuesto una gran revolucion en el avance de las neurociencias. Pese a ello, ha sido objeto de numerosas criticas. Objetivo. Estudiar las criticas mas generalizadas hacia la RMf, de manera que investigadores que se inicien en su uso conozcan los diferentes elementos que hay que tener en cuenta para un acercamiento adecuado a esta tecnica. Desarrollo. Su gran atractivo y utilidad a la hora de observar la actividad cerebral han hecho de la RMf una tecnica cuyo uso ha crecido exponencialmente desde la ultima decada del siglo XX. Paralelamente, la critica hacia ella ha sido especialmente feroz. La mayoria de este escepticismo puede clasificarse en aspectos concernientes a la tecnica y fisiologia, el analisis de los datos y su interpretacion teorica. Mediante este trabajo se revisaran los principales argumentos en cada uno de estos tres apartados, asi como su adecuacion. Adicionalmente, se pretende que este trabajo pueda servir de referencia para investigadores noveles a la hora de identificar elementos que se deban tener en cuenta en su acercamiento a la RMf. Conclusion. Pese a que la RMf constituye actualmente una de las opciones mas interesantes para observar el cerebro, es necesario un alto grado de control y conocimiento para su utilizacion. Aun asi, gran parte de las criticas no se sostiene hoy en dia.

  5. Survival Benefit of Repeat Liver Transplantation in the US: A Serial MELD analysis by Hepatitis C Status and Donor Risk Index

    PubMed Central

    Biggins, Scott W.; Gralla, Jane; Dodge, Jennifer L.; Bambha, Kiran M.; Tong, Suhong; Barón, Anna E.; Inadomi, John; Terrault, Norah; Rosen, Hugo R.

    2014-01-01

    Survival benefit (SB) for first LT is favorable at MELD ≥ 15. Herein, we identify the MELD threshold for SB from repeat liver transplant (ReLT) by recipient HCV status and donor risk index (DRI). We analyzed lab MELD scores in new UNOS registrants for ReLT from 3/2002–1/2010. Risk of ReLT graft failure ≤1 year versus waitlist mortality was calculated using Cox regression, adjusting for recipient characteristics. Of 3057 ReLT candidates, 54% had HCV and 606 died while listed. There were 1985 ReLT recipients, 52% had HCV and 567 ReLT graft failures by 1 year. Unadjusted waitlist mortality and post-ReLT graft failure rates were 416 (95% CI 384–450) and 375 (95% CI 345–407) per 1000 patient-years, respectively. Waitlist mortality was higher with increasing waitlist MELD (p<0.001). The MELD for SB from ReLT overall was 21 (21 in non-HCV and 24 in HCV patients). MELD for SB varied by DRI in HCV patients (MELD 21, 24 and 27 for low, medium and high DRI, respectively) but did not vary for non-HCV patients. Compared to first LT, ReLT requires a higher MELD threshold to achieve a survival benefit resulting in a narrower therapeutic window to optimize the utility of scarce liver grafts. PMID:25243648

  6. Declining Liver Graft Quality Threatens the Future of Liver Transplantation in the United States

    PubMed Central

    Orman, Eric S.; Mayorga, Maria E.; Wheeler, Stephanie B.; Townsley, Rachel M.; Toro-Diaz, Hector H.; Hayashi, Paul H.; Barritt, Sidney A.

    2015-01-01

    National liver transplant volume has declined since 2006, in part due to worsening donor organ quality. Trends that degrade organ quality are expected to continue over the next two decades. We used the United Network for Organ Sharing (UNOS) database to inform a 20-year discrete event simulation estimating liver transplant volume from 2010 to 2030. Data to inform the model were obtained from deceased organ donors between 2000 and 2009. If donor liver utilization practices remain constant, utilization will fall from 78% to 44% by 2030, resulting in 2230 fewer liver transplants. If transplant centers increase their risk tolerance for marginal grafts, utilization would decrease to 48%. Institution of “opt-out” organ donation policies to increase the donor pool would still result in 1380-1866 fewer transplants. Ex-vivo perfusion techniques that increase the use of marginal donor livers may stabilize liver transplant volume. Otherwise, the number of liver transplants in the US will decrease substantially over the next 15 years. Conclusions The transplant community will need to accept inferior grafts and potentially worse post-transplant outcomes and/or develop new strategies for increasing organ donation and utilization in order to maintain the number of liver transplants at the current level. PMID:25939487

  7. Tables of Relative Strengths of Spectral Lines with Mixed Vector Couplings: Dipole Transitions Between LS and Other Couplings

    NASA Astrophysics Data System (ADS)

    Gongora, T. A.; Escalante, V.

    1991-04-01

    RESUMEN Se presentan tablas de intensidades de oscilador de dipolares del tipo (2SP+1)Lp ni - (2SP+l)Lp ml' para 0 < Sp < 2, 0 < Lp < 2, 1 < 1 <4, para cualquier n y m, en que uno de los estados se describe en el esquema de acoplamiento LS y el otro se describe en el esquema de acoplamiento LK, jK 6 jj. Nuestros resultados son utiles en Ia interpretaci6n e identificaci6n de lfneas espectrales entre estados con ntimeros cuanticos similares. ABSTRACT Tables are presented for the relative strength of dipole transitions of the type (2SP+l)Lp ni - (2SP+l)Lp ml' for 0 < Sp < 2, 0 < Lp < 2, 1 < 1 <4, and for any n and m, in which one of the states is described with the Ls coupling scheme, and the other is described with the LK, jK, or jj coupling scheme. Our results are useful in the interpretation and identification of spectral lines between states with similar quantum numbers. K words: ATOMIC AND MOLECULAR DATA - PROBABILITES

  8. [Activities after school time and obesity in children. Influence of family and neighborhood environment].

    PubMed

    Yamamoto-Kimura, Liria T; Alvear-Galindo, Ma Guadalupe; Morán-Álvarez, Cristina; Acuña-Sánchez, Ma Eugenia; Torres-Durán, Patricia V; Juárez-Oropeza, Marco Antonio; Ferreira-Hermosillo, Aldo; Solís-Díaz, Ma Guadalupe

    2013-01-01

    Introducción: los niños de primaria en México permanecen poco tiempo en el ámbito escolar. El objetivo de este trabajo fue conocer las características somatométricas de los escolares y sus padres e investigar las actividades extraescolares que realizan y las que les gustaría realizar y la razón por la que no lo hacen. Métodos: participaron 172 niños de uno y otro sexo, de primer y segundo año de una escuela primaria oficial de una colonia marginada. Resultados: la frecuencia de bajo peso fue de 12.1 %; de sobrepeso, de 19 % y de obesidad, de 18.5 %. Las actividades sedentarias como ver la televisión y los videojuegos fueron las más altas y las deportivas las más bajas, principalmente en las niñas. La falta de tiempo de los padres, los bajos recursos económicos de la familia y la falta de espacios seguros donde los niños puedan jugar y realizar actividades físicas y deportivas fueron los factores más importantes. Conclusiones: la pobreza y la inseguridad del barrio determinan las actividades extraescolares. La alta frecuencia de bajo peso, el sobrepeso y la obesidad en los escolares se relacionaron con la falta de actividad física.

  9. [Clinical features and diagnosis of Pelizaeus-Merzbacher disease: five case reports].

    PubMed

    Espinosa, E; Mera-Solarte, P R; Cote-Orozco, J E

    2016-05-01

    Introduccion. La enfermedad de Pelizaeus-Merzbacher es un trastorno hipomielinizante raro debido a alteraciones en el gen PLP1, que lleva a un fallo de la mielinizacion axonal de los oligodendrocitos en el sistema nervioso central. Existen dos formas descritas segun la gravedad de su presentacion: connatal y clasica. Se caracteriza por hipotonia neonatal, retraso del desarrollo psicomotor, espasticidad progresiva de predominio en los miembros inferiores y nistagmo, con signos y sintomas piramidales y extrapiramidales, y la forma connatal es mucho mas grave. La resonancia magnetica muestra leucoencefalopatia hipomielinizante difusa, los potenciales evocados usualmente se alteran y la confirmacion se realiza mediante estudio molecular del gen PLP1. Casos clinicos. Se presentan cinco pacientes pediatricos afectados, cuatro con la forma clasica y uno con la forma connatal; se describen las caracteristicas clinicas, los estudios complementarios y se realiza una revision concisa de la bibliografia. Conclusion. Esta enfermedad tiene una evolucion progresiva y casi invariable, lo cual es la clave clinica para diferenciarla de otras entidades como la paralisis cerebral infantil, neuropatias perifericas, esclerosis multiple, entre otras, ademas de los hallazgos caracteristicos en las neuroimagenes. Es necesario sospechar este diagnostico y confirmar alteraciones en el gen PLP1 con el fin de obtener una incidencia real de esta entidad, probablemente subestimada, como otras leucodistrofias.

  10. [CONTENT OF TRANS FATTY ACIDS IN FOOD PRODUCTS IN SPAIN].

    PubMed

    Robledo de Dios, Teresa; Dal Re Saavedra, M Ángeles; Villar Villalba, Carmen; Pérez-Farinós, Napoleón

    2015-09-01

    Introducción: los ácidos grasos trans están asociados con problemas de salud, como enfermedad coronaria o diabetes. Objetivos: conocer la cantidad de ácidos grasos trans en los alimentos en España, y el porcentaje que representan con respecto al total de los ácidos grasos. Métodos: se estudió el contenido en ácidos grasos de 443 alimentos adquiridos en España en el año 2010, y clasificados en grupos. Determinación analítica de grasas en los productos mediante cromatografía de gases. Se calcularon estimadores de tendencia central y dispersión de la cantidad de ácidos grasos trans en cada grupo (g de ácidos grasos trans/100 g de producto). Se calculó el porcentaje de ácidos grasos trans con respecto a la grasa total en cada grupo. Resultados: los productos se agruparon en 42 grupos. En todos, salvo uno, la mediana de ácidos grasos trans fue inferior a 0,55 g/100 g de producto. El 83 % de los grupos tienen menos del 2 % de ácidos grasos trans con respecto a las grasas totales, y el 71 %, menos del 1 %. Discusión: el contenido de AGT en los alimentos en España es bajo y no representa actualmente un problema de salud pública.

  11. The extended tracking network and indications of baseline precision and accuracy in the North Andes

    NASA Technical Reports Server (NTRS)

    Freymueller, Jeffrey T.; Kellogg, James N.

    1990-01-01

    The CASA Uno Global Positioning System (GPS) experiment (January-February 1988) included an extended tracking network which covered three continents in addition to the network of scientific interest in Central and South America. The repeatability of long baselines (400-1000 km) in South America is improved by up to a factor of two in the horizontal vector baseline components by using tracking stations in the Pacific and Europe to supplement stations in North America. In every case but one, the differences between the mean solutions obtained using different tracking networks was equal to or smaller than day-to-day rms repeatabilities for the same baselines. The mean solutions obtained by using tracking stations in North America and the Pacific agreed at the 2-3 millimeter level with those using tracking stations in North America and Europe. The agreement of the extended tracking network solutions suggests that a broad distribution of tracking stations provides better geometric constraints on the satellite orbits and that solutions are not sensitive to changes in tracking network configuration when an extended network is use. A comparison of the results from the North Andes and a baseline in North America suggests that the use of a geometrically strong extended tracking network is most important when the network of interest is far from North America.

  12. Precise regional baseline estimation using a priori orbital information

    NASA Technical Reports Server (NTRS)

    Lindqwister, Ulf J.; Lichten, Stephen M.; Blewitt, Geoffrey

    1990-01-01

    A solution using GPS measurements acquired during the CASA Uno campaign has resulted in 3-4 mm horizontal daily baseline repeatability and 13 mm vertical repeatability for a 729 km baseline, located in North America. The agreement with VLBI is at the level of 10-20 mm for all components. The results were obtained with the GIPSY orbit determination and baseline estimation software and are based on five single-day data arcs spanning the 20, 21, 25, 26, and 27 of January, 1988. The estimation strategy included resolving the carrier phase integer ambiguities, utilizing an optial set of fixed reference stations, and constraining GPS orbit parameters by applying a priori information. A multiday GPS orbit and baseline solution has yielded similar 2-4 mm horizontal daily repeatabilities for the same baseline, consistent with the constrained single-day arc solutions. The application of weak constraints to the orbital state for single-day data arcs produces solutions which approach the precise orbits obtained with unconstrained multiday arc solutions.

  13. Recovery of a geocentric reference frame using the present-day GPS system

    NASA Technical Reports Server (NTRS)

    Malla, Rajendra P.; Wu, Sien-Chong

    1990-01-01

    A geocentric reference frame adopts the center of mass of the earth as the origin of the coordinate axes. The center of mass of the earth is the natural and unambiguous origin of a geocentric satellite dynamical system. But in practice a kinematically obtained terrestrial reference frame may assume an origin other than the geocenter. The establishment of a geocentric reference frame, to which all relevant observations and results can be referred and in which geodynamic theories or models for the dynamic behavior of earth can be formulated, requires the ability to accurately recover a given coordinate frame origin offset from the geocenter. GPS measurements, because of their abundance and broad distribution, provide a powerful tool to obtain this origin offset in a short period of time. Two effective strategies have been devised. Data from the First Central And South America (Casa Uno) geodynamics experiment has been studied, in order to demonstrate the ability of recovering the geocenter location with present day GPS satellites and receivers.

  14. [Menstrual pattern characteristics in female adolescents with epilepsy].

    PubMed

    Serret-Montoya, Juana; Villasís-Keever, Miguel Angel; Ríos-Zúñiga, Sandra; Sánchez-Vaca, Gerardo; Zurita-Cruz, Jessie Nalley; Hernández-Cabezza, Abigail

    2014-01-01

    INTRODUCCIÓN: existen múltiples efectos adversos de los fármacos antiepilépticos, uno de ellos son las irregularidades menstruales como amenorrea, oligomenorrea, ginecomastia, galactorrea y síndrome de ovarios poliquísticos. Ante la poca información, el objetivo de este estudio fue determinar la frecuencia de alteraciones menstruales en adolescentes con epilepsia en un hospital pediátrico de tercer nivel de atención. MÉTODOS: se incluyó a adolescentes con epilepsia, mayores de nueve años de edad y con más de un año con epilepsia. Inicialmente se definió el estadio puberal. Durante seis meses se evaluó el patrón menstrual. Entre quienes se detectó alguna alteración se evaluó perfil hormonal y se realizó ultrasonido ginecológico. El análisis fue descriptivo.

  15. [Not Available].

    PubMed

    Curilem Gatica, Cristian; Almagià Flores, Atilio; Rodríguez Rodríguez, Fernando; Yuing Farias, Tuillang; Berral de la Rosa, Francisco; Martínez Salazar, Cristian; Jorquera Aguilera, Carlos; Bahamondes Ávila, Carlos; Soís Urra, Patricio; Cristi Montero, Carlos; Bruneau Chávez, José; Pinto Aguilante, Juan; Niedmann Brunet, Luis

    2016-01-01

    El índice de masa corporal (IMC) otorga uno de los índices más usados para determinar el estado nutricional de la población a nivel mundial, donde a pesar de existir recomendaciones claras y definidas para su interpretación como el sexo, edad, raza, entre otros, normalmente se estandariza su clasificación, independiente de las variables, aumentando el error en el resultado y en la clasificación del estado nutricional.El uso de la composición corporal a través de la antropometría entrega mayor información que el IMC, siendo la masa grasa y la masa muscular los principales resultados útiles.Este artículo presenta una revisión de las ecuaciones existentes y propone aquellas más simples y con menor error de estimación para ser usadas como una herramienta que reemplace o complemente al IMC, favoreciendo una mejor comprensión e interpretación del estado nutricional y nivelde actividad física en niños y adolescentes. PMID:27513512

  16. Long-term outcomes of children after solid organ transplantation.

    PubMed

    Kim, Jon Jin; Marks, Stephen D

    2014-01-01

    Solid organ transplantation has transformed the lives of many children and adults by providing treatment for patients with organ failure who would have otherwise succumbed to their disease. The first successful transplant in 1954 was a kidney transplant between identical twins, which circumvented the problem of rejection from MHC incompatibility. Further progress in solid organ transplantation was enabled by the discovery of immunosuppressive agents such as corticosteroids and azathioprine in the 1950s and ciclosporin in 1970. Today, solid organ transplantation is a conventional treatment with improved patient and allograft survival rates. However, the challenge that lies ahead is to extend allograft survival time while simultaneously reducing the side effects of immunosuppression. This is particularly important for children who have irreversible organ failure and may require multiple transplants. Pediatric transplant teams also need to improve patient quality of life at a time of physical, emotional and psychosocial development. This review will elaborate on the long-term outcomes of children after kidney, liver, heart, lung and intestinal transplantation. As mortality rates after transplantation have declined, there has emerged an increased focus on reducing longer-term morbidity with improved outcomes in optimizing cardiovascular risk, renal impairment, growth and quality of life. Data were obtained from a review of the literature and particularly from national registries and databases such as the North American Pediatric Renal Trials and Collaborative Studies for the kidney, SPLIT for liver, International Society for Heart and Lung Transplantation and UNOS for intestinal transplantation. PMID:24860856

  17. [In Process Citation].

    PubMed

    Santacruz-Cerdán, Elisa; Arcano, Karina; Arrieta Blanco, Francisco; Ortiz Flores, Andrés; Mateo Lobo, Raquel; Botella Carretero, José Ignacio; Vázquez Martínez, Clotilde; Zamarrón Cuesta, Isabel

    2016-02-16

    El uso de la nutrición parenteral domiciliaria (NPD) en pacientes que no pueden alcanzar sus requerimientos nutricionales por la vía enteral está aumentando en los últimos años, permitiendo la normalización del estilo de vida de los pacientes. Entre las patologías que más frecuentemente precisan de la NPD en España destacan la neoplasia y la isquemia mesentérica. Sin embargo, la NPD constituye uno de los pilares básicos del tratamiento de enfermedades mucho menos frecuentes como es el caso de la esclerosis peritoneal encapsulante. A continuación presentamos el caso de un paciente diagnosticado de esclerosis peritoneal encapsulante con soporte NPD de más de 7 años de NPD con un catéter central de inserción periférica (PICC) para la NPD sin complicaciones y pudiendo realizar su actividad laboral habitual. Dado lo excepcional del caso lo remitimos para su publicación.

  18. Improved renal ischemia tolerance in females influences kidney transplantation outcomes

    PubMed Central

    Aufhauser, David D.; Wang, Zhonglin; Murken, Douglas R.; Bhatti, Tricia R.; Wang, Yanfeng; Ge, Guanghui; Redfield, Robert R.; Abt, Peter L.; Wang, Liqing; Reese, Peter P.; Hancock, Wayne W.; Levine, Matthew H.

    2016-01-01

    Experimentally, females show an improved ability to recover from ischemia-reperfusion injury (IRI) compared with males; however, this sex-dependent response is less established in humans. Here, we developed a series of murine renal ischemia and transplant models to investigate sex-specific effects on recovery after IRI. We found that IRI tolerance is profoundly increased in female mice compared with that observed in male mice and discovered an intermediate phenotype after neutering of either sex. Transplantation of adult kidneys from either sex into a recipient of the opposite sex followed by ischemia at a remote time resulted in ischemia recovery that reflected the sex of the recipient, not the donor, revealing that the host sex determines recovery. Likewise, renal IRI was exacerbated in female estrogen receptor α–KO mice, while female mice receiving supplemental estrogen before ischemia were protected. We examined data from the United Network for Organ Sharing (UNOS) to determine whether there is an association between sex and delayed graft function (DGF) in patients who received deceased donor renal transplants. A multivariable logistic regression analysis determined that there was a greater association with DGF in male recipients than in female recipients. Together, our results demonstrate that sex affects renal IRI tolerance in mice and humans and indicate that estrogen administration has potential as a therapeutic intervention to clinically improve ischemia tolerance. PMID:27088798

  19. The Lagerlunda collision and the introduction of color vision testing.

    PubMed

    Mollon, J D; Cavonius, L R

    2012-01-01

    In histories of vision testing, the origins of occupational screening for color blindness are often traced to a fatal railroad accident that occurred in Sweden on the night of 14-15 November 1875. The scene of the accident was the estate of Baron Lagerfelt in Östergötland, but the critical events were played out at Linköping (the normal passing place for the northbound and southbound expresses) and at Bankeberg (a small station to which the passing place was reassigned at a few minutes' notice). First to arrive at Bankeberg, the northbound express slowed almost to a halt, but then inexplicably accelerated forwards towards the Lagerlunda estate, despite a sequence of signals from the stationmaster, Uno Björkelund, and a lineman, Oskar Johansson. Soon after the accident, the ophthalmologist Frithiof Holmgren suggested that the engineer of the northbound express, Andersson, or his oiler, Larsson, had been color blind. Neither survived to be tested. Using the records of the subsequent trial and other archival materials, we have re-examined the role of color blindness in the Lagerlunda incident and conclude that the accident cannot be attributed to color blindness alone. Yet the accident undoubtedly had a central role in the introduction of color vision testing by European and North American railroads. To persuade the railroad management to introduce universal screening of employees for color blindness, Holmgren used a dramatic coup de theatre and some unashamed subterfuge.

  20. [Erythropoietin as a protective factor in rat CNS cells receiving radiotherapy -an in vitro study].

    PubMed

    Gomez-De la Riva, Álvaro; Isla-Guerrero, Alberto; García-Grande, Antonio

    2014-03-01

    Objetivo. Investigar el efecto de la eritropoyetina en cultivos celulares de corteza cerebral de ratas cuando se administra radioterapia. Materiales y metodos. El estudio se desarrolla con la obtencion de corteza cerebral de embriones de 17 dias de preñez de ratas Wistar. Las celulas cultivadas despues de 72 horas de la extraccion de la corteza se dividieron en dos grupos, a uno de ellos se le administro eritropoyetina alfa a una concentracion de 30 pM y el otro era el grupo control. A los dos grupos de celulas se les radio con 6 Gy mediante un aparato Phoenix. Tras la radioterapia permanecieron 24 horas en la incubadora antes de fijarlas. Las celulas fueron fijadas con formaldehido al 4%. A continuacion, con la tecnica de TUNEL, se valoro el numero de celulas apoptoticas en los cultivos radiados. Resultados. Se observo un porcentaje de apoptosis del 25,22% del grupo de cultivo sin eritropoyetina, mientras que en el grupo de celulas radiadas con eritropoyetina fue del 15,5%. Las variables cuantitativas se analizaron mediante el test t de Student y el resultado de la comparacion entre los dos grupos fue estadisticamente significativo (p < 0,0001). Conclusion. En nuestro modelo experimental in vitro se comprobo que la eritropoyetina es eficaz en la prevencion de la apoptosis en celulas del sistema nervioso central de ratas por radiacion. Esto abre nuevos campos para la investigacion del efecto protector del sistema nervioso.

  1. Installation of a variable-angle spectrometer system for monitoring diffuse and global solar radiation

    NASA Astrophysics Data System (ADS)

    Ormachea, O.; Abrahamse, A.; Tolavi, N.; Romero, F.; Urquidi, O.; Pearce, J. M.; Andrews, R.

    2013-11-01

    We report on the design and installation of a spectrometer system for monitoring solar radiation in Cochabamba, Bolivia. Both the light intensity and the spectral distribution affect the power produced by a photovoltaic device. Local variations in the solar spectrum (especially compared to the AM1.5 standard) may have important implications for device optimization and energy yield estimation. The spectrometer system, based on an Ocean Optics USB4000 (300-900nm) spectrometer, was designed to increase functionality. Typically systems only record the global horizontal radiation. Our system moves a fiber-optic cable 0-90 degrees and takes measurements in 9 degree increments. Additionally, a shadow band allows measurement of the diffuse component of the radiation at each position. The electronic controls utilize an Arduino UNO microcontroller to synchronizes the movement of two PAP bipolar (stepper) motors with the activation of the spectrometer via an external trigger. The spectrometer was factory calibrated for wavelength and calibrated for absolute irradiance using a Sellarnet SL1-Cal light source. We present preliminary results from data taken March-June, 2013, and comment on implications for PV devices in Cochabamba.

  2. New "all-in-one" device for mesh plug hernioplasty: the Trabucco repair.

    PubMed

    Gossetti, Francesco; Massa, Salvatore; Abbonante, Francesco; Calabria, Michele; Ceci, Francesca; Viarengo, Maria Antonietta; Manzi, Emy; D'Amore, Linda; Negro, Paolo

    2015-01-01

    Sebbene la tecnica Mesh Plug rappresenti una procedura di indubbia efficacia nel trattamento dell’ernia inguinale, tuttora permangono dubbi in relazione alla storia naturale del plug. In particolare, il plug può andare incontro a coartazione (shrinkage) con formazione di un “meshoma” responsabile di una sintomatologia dolorosa cronica. Più raramente, il plug può migrare e provocare erosione delle strutture anatomiche circostanti. Nel passato sono stati proposti alcuni devices per cercare di risolvere il problema della migrazione; nessuno di questi, tuttavia, ha raggiunto la popolarità dei plug conici o a forma di fiore. Il presente lavoro riporta i risultati di uno studio pilota condotto con l’impiego di un nuovo device tridimensionale, il NeT Plug & Patch. I risultati dopo 12 mesi di follow-up, hanno dimostrato una ridotta incidenza di dolore postoperatorio e cronico, senza rischio di migrazione. Inoltre è stata registrata una compliance soddisfacente sia dei pazienti che degli operatori. La protesi NeT Plug & Patch ha dimostrato di poter realizzare un’ernioplastica semplice ed efficace per la riparazione dell’ernia inguinale.

  3. Europe goes to Mars - preparations are well under way

    NASA Astrophysics Data System (ADS)

    2001-04-01

    -mail: psri@open.ac.uk HRSC (High/Super Resolution Stereo Camera), Gerhard Neukum, DLR, Institut für Planetenerkundung, Berlin, Germany, tel. +49 30 67055 300, fax. +49 30 67055 303, e-mail: gerhard.neukum@dlr.de MaRS (Radio Science Experiment), Martin Pätzold, University of Cologne, Germany, tel. +49 221 4703385, fax. +49 221 4705198, e-mail: paetzold@geo.uni-koeln.de MARSIS (Subsurface Sounding Radar/Altimeter), Giovanni Picardi, University of Rome, Italy, tel. +39 06 44585455, fax. +39 06 4873300, e-mail: picar@infocom.ing.uniroma1.it OMEGA (IR Mineralogical Mapping Spectrometer), Jean-Pierre Bibring, Institut d'Astrophysique Spatiale, Orsay, France, tel. +33 1 69858686, fax. +33 1 69858675, e-mail: bibring@ias.u-psud.fr PFS (Planetary Fourier Spectrometer), Vittorio Formisano, Istituto Fisica Spazio Interplanetario, Rome, Italy, tel. +39 6 49934362, fax. +39 6 49934383, e-mail: formisan@nike.ifsi.rm.cnr.it SPICAM (UV and IR Atmospheric Spectrometer), Jean-Loup Bertaux, Service d'Aéronomie, Verrières-le-Buisson, France, tel. +33 1 64474251, fax. +33 1 6920299, e-mail: jean-loup.bertaux@aerov.jussieu.fr. Additional contact: Christian Muller, Belgian Institute for Space Aeronomy. B.USOC earth observations coordination, Avenue Circulaire, 3, B-1180 Brussels, Belgium, tel. +32-2-3730372, fax: +32-2-3748423, e- mail: Christian.Muller@oma.be

  4. Hurry along please, for the Mars Express

    NASA Astrophysics Data System (ADS)

    1998-06-01

    reservoirs of frozen or liquid water beneath the martian surface would greatly improve the practical possibilities for human ventures to the Red Planet. It would shed light on the chemical history of Mars and on whether conditions were ever right for life to appear there. And the chief motive for all of ESA's deep-space missions is to understand the Earth better. The fate of water on Mars is one of the salient questions about why the planet is very different from the Earth, although it is a near neighbour in the Solar System. A team led by the University of Rome will contribute the Subsurface Sounding Radar/Altimeter on Mars Express. This instrument will map the distribution of ice and liquid water with radar pulses penetrating the martian surface. It will chart the topography of the surface too, and the observed effects of the martian ionosphere on the radar waves will show how the solar wind influences the state of the atmosphere. The link between the solar wind and the fate of water on Mars is the concern of the Swedish Institute of Space Physics in Kiruna, and the ASPERA experiment lead. Mars may have lost most of its water by solar effects destroying water vapour in the atmosphere. By sensing neutral and charged atomic particles in the planet's vicinity, ASPERA will shed light on any such mechanism for dehydrating Mars. The escape of gas from Mars will also be seen by SPICAM UV, which is the special responsibility of the Service d'Aéronomie at Verrières near Paris. The instrument will examine the martian atmosphere by ultraviolet light. A major aim of SPICAM UV is to clarify the threat that solar ultraviolet rays and oxidizing chemicals (ozone and hydroxyl) may have posed to any life incipient on Mars. Comprehensive observations of the martian atmosphere, and of its gases, dust and weather, will come from PFS, an infrared instrument provided by a team led by the Istituto di Fisica dello Spazio Interplanetario in Frascati. It measures the intensities of infrared rays

  5. Mars Express radar collects first surface data

    NASA Astrophysics Data System (ADS)

    2005-08-01

    the middle of August, when the night-time portion of the observations will have almost ended. After that, observation priority will be given to other Mars Express instruments that are best suited to operating in daytime, such as the HRSC camera and Omega mapping spectrometer. However, Marsis will continue its surface and ionospheric investigations in daytime, with ionospheric sounding being reserved for more than 20% of all Mars Express orbits, under all possible Sun illumination conditions. In December, the Mars Express orbit pericentre will enter night-time again. By then, the pericentre will have moved closer to the south pole, allowing Marsis to carry out optimal probing of the subsurface once again, this time in the southern hemisphere. Note to editors The first commissioning phase was given over to testing the Marsis electronics and software and the two 20m-long antennas (dipole). The second commissioning phase, lasting about ten days, will be spent calibrating the 7m ‘monopole’ antenna. This antenna is to be used in conjunction with the Marsis dipole to correct any surface roughness effects caused by the radio waves emitted by the dipole and reflected by an irregular surface. The monopole will find its best use during investigations of areas where surface roughness is greater. The Marsis instrument was developed within the framework of a Memorandum of Understanding between the Italian Space Agency (ASI) and NASA. It was developed by Alenia Spazio under ASI management and the scientific supervision of University of Rome ‘La Sapienza’, in partnership with the Jet Propulsion Laboratory (JPL) and the University of Iowa. JPL provided the antenna manufactured by Astro Aerospace. It is the first instrument designed to actually look below the surface of Mars. Its major goals are to characterise the subsurface layers of sediments and possibly detect underground water or ice, conduct large-scale altimetry mapping and provide data on the planet’s ionosphere. For

  6. USEMS & GLASS: investigator-driven frontier research in earthquake physics. Ground-breaking research in Europe enhances outreach to the general public

    NASA Astrophysics Data System (ADS)

    Mariano, S.; di Toro, G.; Collettini, C.; Usems Team; Glass Team

    2011-12-01

    USEMS and GLASS are two projects financed by the European Research Council (ERC) as part of the ERC starting grants scheme within the FP7 framework. The rationale behind the funding scheme is to support some of the most promising scientific endeavours in Europe that are being led by young researchers, and to emphasize the excellence of individual ideas rather than specific research areas; in other words, to promote bottom-up frontier research. The general benefits of this rationale are evident in the two ongoing projects that deal with earthquake physics, as these projects are increasingly recognized in their scientific community. We can say that putting excellence at the heart of European Research strongly contributes to the construction of a European knowledge-based society. From a researcher point-of-view one of the most challenging aspects of these projects is to approach and convey the results of the projects to a general public, contributing to the construction of knowledge-based society. Luckily, media interest and the availability of a number of new communication tools facilitate the outreach of scientific achievements. The largest earthquakes during the last ten years (e.g. Sumatra 2004 and Japan 2011) have received widespread attention in the media world (TV, W.W.W., Newspaper and so on) for months, and successful research projects such as those above also become media protagonists, gaining their space in the media bullring. The USEMS principal investigator and his team have participated in several dissemination events in the Mass Media, such as interviews wit Italian and French TV national broadcasts (RAI Due TG2, RAI Uno Unomattina, Rai Tre Geo & Geo, FRANCE 2); interviews in scientific journals: SCIENCE (Sept. 2010), newspapers and web (Corriere della Sera, Il Gazzettino, Il Messagero, La Stampa, Libero, Il Mattino, Yahoo, ANSA, AdnKronos and AGI); radio (RadioRai Uno, RadioRai Tre Scienza); documentary "Die Eroberung der Alpen" produced by Tangram

  7. Nanoparticulas basadas en complejos de Fe(II) con transicion de espin: sintesis, caracterizacion y aplicaciones en electronica molecular

    NASA Astrophysics Data System (ADS)

    Monrabal Capilla, Maria

    Esta tesis doctoral esta organizada en 5 capitulos y esta destinada al estudio de sistemas de Fe (II) que presentan el fenomeno de la transicion de espin a escala nanometrica. El capitulo 1 contiene una introduccion general sobre materiales moleculares multifuncionales, destacando aquellos ejemplos mas importantes. Por otro lado, se explicara el fenomeno de la transicion de espin, tratando aspectos conceptuales, los antecedentes mas importantes y la situacion actual. En el capitulo 2 se describen los diferentes procesos existentes para la obtencion de diferentes tipos de nanoparticulas. Ademas, se presenta la sintesis y caracterizacion de nanoparticulas del polimero de coordinacion unidimensional [Fe(Htrz)2(trz)]BF4, obtenidas mediante el metodo de micelas inversas. Estas nanoparticulas, con una estrecha distribucion de tamanos centrada alrededor de los 11 nm, presentan una transicion de espin muy abrupta, con un ancho ciclo de histeresis termica de unos 40K. En el capitulo 3 se describe el proceso de modificacion del tamano de las nanoparticulas descritas en el capitulo anterior, llevado a cabo variando la proporcion de surfactante/H2O en el medio. Ademas, con el objetivo de modificar las propiedades magneticas de las nanoparticulas obtenidas en el capitulo 2, se lleva a cabo la sintesis de nanoparticulas de polimeros de la misma familia del [Fe(Htrz)2(trz)]BF4. En concreto se sintetizaron 3 nuevos tipos de nanoparticulas basadas en el polimero [Fe(Htrz)1-x(NH2trz)x](ClO4)2, siendo x = 0.05, 0.15 y 0.3, en cada caso. Estas nanoparticulas siguen presentando una estrecha distribucion de tamanos y una transicion de espin muy abrupta y con un ancho ciclo de histeresis. Ademas, se observa que este ciclo se desplaza a temperaturas mas proximas a la temperatura ambiente a medida que se aumenta el porcentaje de 4-amino-1, 2, 4- triazol en la muestra. Pero al mismo tiempo se produce una disminucion de la anchura de este ciclo. Por ultimo, en este capitulo se presenta la

  8. Dual Kidney Allocation Score: A Novel Algorithm Utilizing Expanded Donor Criteria for the Allocation of Dual Kidneys in Adults.

    PubMed

    Johnson, Adam P; Price, Thea P; Lieby, Benjamin; Doria, Cataldo

    2016-01-01

    BACKGROUND Dual kidney transplantation (DKT) of expanded-criteria donors is a cost-intensive procedure that aims to increase the pool of available deceased organ donors and has demonstrated equivalent outcomes to expanded-criteria single kidney transplantation (eSKT). The objective of this study was to develop an allocation score based on predicted graft survival from historical dual and single kidney donors. MATERIAL AND METHODS We analyzed United Network for Organ Sharing (UNOS) data for 1547 DKT and 26 381 eSKT performed between January 1994 and September 2013. We utilized multivariable Cox regression to identify variables independently associated with graft survival in dual and single kidney transplantations. We then derived a weighted multivariable product score from calculated hazard ratios to model the benefit of transplantation as dual kidneys. RESULTS Of 36 donor variables known at the time of listing, 13 were significantly associated with graft survival. The derived dual allocation score demonstrated good internal validity with strong correlation to improved survival in dual kidney transplants. Donors with scores less than 2.1 transplanted as dual kidneys had a worsened median survival of 594 days (24%, p-value 0.031) and donors with scores greater than 3.9 had improved median survival of 1107 days (71%, p-value 0.002). There were 17 733 eSKT (67%) and 1051 DKT (67%) with scores in between these values and no differences in survival (p-values 0.676 and 0.185). CONCLUSIONS We have derived a dual kidney allocation score (DKAS) with good internal validity. Future prospective studies will be required to demonstrate external validity, but this score may help to standardize organ allocation for dual kidney transplantation.

  9. [Liver transplants from living donors].

    PubMed

    Rogiers, X; Danninger, F; Malagó, M; Knoefel, W T; Gundlach, M; Bassas, A; Burdelski, M; Broelsch, C E

    1996-03-01

    In this article the authors discuss the advantages of Living Related Liver Transplantation (LRLT), criteria for the selection of donors and the standard operation technique. Among a total of 241 liver transplantation (LTx), 42 LRLT were performed at the University of Hamburg between October 1, 1991 and December 19, 1994. The body weight of recipients for LRLT ranged from 4,6 to 39 kg, with 64,2% having less than 10 kg. The volume of the donor left lateral liver lobe ranged from 100 cc to 350 cc. The average one year survival rate among electively operated patients-status 3-4 (UNOS 1995 classification) was 86.7%, two year survival rate 83.3%. The main advantages of LRLT are consired the following: 1. Absence of mortality on the waiting list, 2. Optimal timing of the transplantation (elective procedure, patient in a good condition), 3. Excellent organ (no primary non function), 4. A possible immunologic advantage, 5. Relief of the waiting list for cadaveric organs, 6. Psychological benefit for the family, 7. Cost effectiveness. Potential candidates for living donation with more than one cardiovascular risk factors were excluded. Social and psychological reasons leading to rejection of candidates were as follows: unstable family structure, expected professional or financial difficulties after living donation or withdrawal from consent. LRLT gives parents of a child with TLD a chance to avoid the risk of death on the waiting list or primary non function of the graft. LRLT has therefore established an important place in pediatric liver transplantation. PMID:8768973

  10. [Study of death with secondary diagnosis of malnutrition in a third level hospital].

    PubMed

    Fernández Valdivia, Antonia; Lobo Támer, Gabriela; Martínez Cirre, Ma Carmen; Valero Aguilera, Beatriz; Peña Taveras, Manuel del Carmen; Rodríguez Rodríguez, José María; Martínez Tapias, Jesús; Pérez de la Cruz, Antonio Jesús

    2013-01-01

    Introducción: La desnutrición constituye uno de los principales problemas de Salud Pública, según datos de la OMS, es la primera causa de mortalidad, cuando la misma afecta al colectivo de los sujetos hospitalizados, toma entidad propia denominándose “desnutrición hospitalaria”. Objetivos: El objetivo general es cuantificar los diagnósticos principales de alta más frecuentes, que causan exitus, con el diagnóstico secundario de desnutrición. Métodos: Se trata de un estudio transversal y descriptivo, en el que se han incluido todas las altas hospitalarias del año 2011 y primer semestre de 2012, que han sido exitus y que tienen como diagnóstico secundario la desnutrición, siendo el total de 33. Se ha realizado un análisis estadístico descriptivo, efectuándose el test de Mann-Whitney para pruebas no paramétricas (p < 0,05). Resultados: Los diagnósticos principales más frecuentes entre las 33 altas analizadas son la sepsis (12,1%), metástasis hepáticas (9,1%), neumonía (6,1%), insuficiencia respiratoria aguda (6,1%) e insuficiencia renal aguda (6,1%). Conclusiones: Aunque el diagnóstico principal más frecuente es la sepsis, al agrupar los diagnósticos, el GRD más frecuente es de patología respiratoria, por lo que se ha de hacer codificación exhaustiva y de calidad para ajustar el peso relativo de los mismos a la realidad. Es fundamental especificar en la fuente de información clínica utilizada para la codificación, el grado de desnutrición, para obtener mayor especificidad en los datos.

  11. [In Process Citation].

    PubMed

    Muros, José Joaquín; Briones, Mercedes; Rodríguez, Guillermo; Bouzas, Paula R; Giménez, Rafael; Cabrera-Vique, Carmen

    2016-03-25

    Introducción: Guatemala ha estado experimentando una transición en sus estilos de vida. Mientras que la desnutrición crónica sigue siendo prevalente, se ha experimentado un aumento sustancial de los casos de obesidad. Objetivo: proporcionar información actualizada sobre las nuevas tendencias en cuanto al estado nutricional en Guatemala. Métodos: se diseñó un estudio transversal con una muestra de 392 niños y adolescentes (5-18 años) seleccionados de manera aleatoria. El muestreo fue estratificado según su ubicación geográfica (rural y urbana), sexo y edad. Resultados: alrededor del 62% de la muestra urbana presentó problemas de sobrepeso y un 13,8 de obesidad. Entre los participantes urbanos, la prevalencia de sobrepeso/obesidad fue mayor en el grupo de 11-14 años. El grupo urbano presentó una mayor prevalencia de sobrepeso/obesidad que el grupo rural para todos los grupos de edad (excepto en el grupo de 15-18 años que presentó unos índices de obesidad ligeramente más elevados en el grupo rural). Se observó una mayor prevalencia de retraso en el crecimiento en el grupo rural, excepto para el grupo de edad de 15-18 años. La prevalencia de bajo peso fue significativamente mayor en el grupo rural (25% vs. 1,2%) así como la prevalencia del delgadez, excepto para el grupo de edad de 5-10 años. Conclusión: la alta prevalencia de bajo peso y la de sobrepeso/obesidad coexisten en los niños y adolescentes en Guatemala.

  12. [RELATIONSHIP BETWEEN BODY MASS INDEX, PHYSICAL ACTIVITY AND MEAL TIMES IN MEXICAN ADOLESCENTS].

    PubMed

    Saucedo-Molina, Teresita de Jesùs; Rodríguez Jiménez, Juana; Oliva Macías, Luz Alejandra; Villarreal Castillo, Martín; León Hernández, Rodrigo César; Fernández Cortés, Trinidad Lorena

    2015-09-01

    Objetivos: los objetivos de este estudio son: 1) describir la distribución del IMC, los niveles de actividad física y la frecuencia de los tiempos de comida, y 2) examinar la relación de estas variables con el IMC en una muestra de adolescentes mexicanos estudiantes de preparatoria. Métodos: participaron 1.028 adolescentes (58,9% mujeres y 41,1% hombres) de 15 a 19 años de edad (M= 16,12; DE= 0,9). Se calculó el IMC y se utilizó la referencia del CDC-2000. Los tiempos de comida se midieron con uno de los factores del cuestionario Factores de Riesgo Asociados a Trastornos Alimentarios para Púberes (FRATAP). La actividad física se evaluó mediante el International Physical Activity Questionnaire (IPAQ) en su versión corta. Se realizaron correlaciones de Pearson para ver la relación entre las variables. Resultados: la prevalencia combinada de sobrepeso y obesidad alcanzó el 29,2% para mujeres y el 29,3% en hombres. En el factor tiempos de comida, los sujetos con desnutrición y bajo peso fueron quienes siempre obtuvieron los valores más altos en la opción de respuesta. El 31,9% del total de la muestra reportó un nivel de actividad física bajo. Los tiempos de comida mostraron asociaciones significativas con el IMC (r= -0,142, p < 0,01) y los niveles de actividad física (r= 0,125, p < 0,01). Discusión: en la muestra se identificaron problemas importantes de malnutrición, frecuencia de comidas e inactividad física. De estos hallazgos surge la necesidad de diseñar e implantar programas para promover estilos de vida saludables en adolescentes.

  13. [Physical activity by pregnant women and its influence on maternal and foetal parameters; a systematic review].

    PubMed

    Aguilar Cordero, M J; Sánchez López, A M; Rodríguez Blanque, R; Noack Segovia, J P; Pozo Cano, M D; López-Contreras, G; Mur Villar, N

    2014-10-01

    Introducción: Las múltiples ventajas que aporta a la salud la práctica de una actividad física de forma continuada son conocidas. Aunque es importante en todas las etapas de la vida, cuando llega la gestación aparecen algunas dudas sobre la conveniencia de realizar ejercicio físico, así como del tipo de actividad, de su frecuencia, intensidad y duración. Objetivo: Analizar los principales estudios sobre la influencia de la actividad física sobre los parámetros materno- fetales. Método: Revisión sistemática de programas de actividad física destinados a las mujeres embarazadas y sus resultados durante el embarazo, el parto y el postparto. Se identificaron 45 artículos a través de la búsqueda automatizada en las bases de datos PUBMED, Scopus y Google Scholar; se llevó a cabo entre los meses de octubre de 2013 y marzo de 2014. Para seleccionar los artículos fue preciso considerar la utilidad y la relevancia del tema estudiado y la credibilidad o experiencia de los autores en la temática. Se tuvo en cuenta la validez interna y externa de cada uno de los artículos revisados. Conclusiones: Los resultados de la revisión ponen de manifiesto la importancia de la actividad física durante el periodo gestacional y se constata que la información disponible en la actualidad puede servir de referente inicial para continuar profundizando en los resultados que sobre la salud materno fetal tiene la práctica de actividad física en el medio acuático.

  14. [Neurological complications of tick-borne relapsing fever].

    PubMed

    Castilla-Guerra, L; Fernandez-Moreno, M C; Vergara-Lopez, S; Merino-Rumin, M; Colmenero-Camacho, M A

    2016-09-16

    Introduccion. La fiebre recurrente transmitida por garrapatas (FRTG) puede producir complicaciones neurologicas. No existen apenas estudios en España sobre el tema. Objetivo. Estudiar la prevalencia y las caracteristicas clinicas de las complicaciones neurologicas de los pacientes con FRTG. Pacientes y metodos. Estudio retrospectivo de los pacientes atendidos con FRTG durante 12 años (2004-2015) en un hospital de una zona rural del sur de España. Resultados. Se incluyeron 75 pacientes, 42 varones (56%), con una edad media de 33 años (rango: 14-72 años). Se observaron picaduras de garrapatas en nueve pacientes (12%). Los sintomas mas frecuentes fueron: fiebre en 64 pacientes (85,3%), cefalea en 41 (54,6%) y vomitos en 26 (34,6%). Se sospecho afectacion meningea en nueve pacientes (12%), de los que tres (4%) tenian signos meningeos en el momento del ingreso. A todos ellos se les realizo una puncion lumbar. Ninguno presento paralisis facial ni otra manifestacion neurologica. Se encontraron alteraciones del liquido cefalorraquideo en los tres pacientes con meningismo. En uno de los casos se visualizo Borrelia en el liquido cefalorraquideo. En los pacientes con afectacion neurologica, el tratamiento utilizado fue penicilina G en un caso y ceftriaxona en dos. Todos los pacientes se recuperaron completamente. Conclusiones. La FRTG es una de las formas menos graves de borreliosis, y menos del 5% de los pacientes presenta complicaciones neurologicas. Sin embargo, los medicos deben saber que Borrelia puede causar meningitis en los sujetos expuestos a garrapatas en regiones endemicas de FRTG.

  15. Integrated miniature fluorescent probe to leverage the sensing potential of ZnO quantum dots for the detection of copper (II) ions.

    PubMed

    Ng, Sing Muk; Wong, Derrick Sing Nguong; Phung, Jane Hui Chiun; Chin, Suk Fun; Chua, Hong Siang

    2013-11-15

    Quantum dots are fluorescent semiconductor nanoparticles that can be utilised for sensing applications. This paper evaluates the ability to leverage their analytical potential using an integrated fluorescent sensing probe that is portable, cost effective and simple to handle. ZnO quantum dots were prepared using the simple sol-gel hydrolysis method at ambient conditions and found to be significantly and specifically quenched by copper (II) ions. This ZnO quantum dots system has been incorporated into an in-house developed miniature fluorescent probe for the detection of copper (II) ions in aqueous medium. The probe was developed using a low power handheld black light as excitation source and three photo-detectors as sensor. The sensing chamber placed between the light source and detectors was made of 4-sided clear quartz windows. The chamber was housed within a dark compartment to avoid stray light interference. The probe was operated using a microcontroller (Arduino Uno Revision 3) that has been programmed with the analytical response and the working algorithm of the electronics. The probe was sourced with a 12 V rechargeable battery pack and the analytical readouts were given directly using a LCD display panel. Analytical optimisations of the ZnO quantum dots system and the probe have been performed and further described. The probe was found to have a linear response range up to 0.45 mM (R(2)=0.9930) towards copper (II) ion with a limit of detection of 7.68×10(-7) M. The probe has high repeatable and reliable performance.

  16. [Inappropriate prescribing in older adults with chronic-degenerative disease].

    PubMed

    Luna-Medina, María Aideé; Peralta-Pedrero, María Luisa; Pineda-Aquino, Victoria; Durán-Fernández, Yubia Coral; Avalos-Mejía, Annia; Aguirre-García, María Del Carmen

    2013-01-01

    Introducción: la prescripción potencialmente inapropiada incluye el uso de medicamentos que representan mayor riesgo que benefi cio para el paciente. El objetivo fue evaluar la utilidad del instrumento STOPP-START para su detección. Métodos: se realizó un estudio transversal descriptivo, con selección aleatoria de expedientes de adultos mayores con al menos una enfermedad crónica degenerativa, cuya última consulta tuviera máximo dos meses y que hubiesen cumplido con su cita mensual cuando menos cuatro veces en el últimos semestre. Resultados: de los 285 expedientes revisados, 60 % de los pacientes fueron mujeres; la edad promedio fue de 74 ± 6 años. Se revisaron 1749 prescripciones de 126 medicamentos diferentes. La prescripción inapropiada tuvo una prevalencia de 55 % (IC 95 % = 49-61) y la polifarmacia de 87 % (IC 95 % = 83-91). En los padecimientos cardiovasculares, endocrinos y musculoesqueléticos se registró el mayor número de prescripciones y de prescripción potencialmente inapropiada. Se detectó la omisión de uno o más medicamentos indicados en 72 % de 75 circunstancias clínicas específi cas. Conclusiones: el STOPP-START es útil para detectar prescripción potencialmente inapropiada. Es frecuente la omisión de tratamientos preventivos indicados para el adulto mayor con enfermedades crónicas degenerativas.

  17. How the system functions. The roles of the United Network of Organ Sharing, the organ procurement and transplantation network, and the organ procurement organization in heart transplantation.

    PubMed

    Hobson, J E

    2000-03-01

    Have the limits for suitable recipient candidates for heart transplantation been exceeded? Does the current legislation and policy instituted at all levels, from DHHS to individual transplant programs, critically address the use of a dangerously limited resource? These and other questions must be the focus of future discussions regarding equitable and efficient heart transplantation in this country. The past has shown that many individuals working cooperatively within committees at federal and organizational levels have already made great strides in making organ transplantation a successful reality. Many factors influence the broadening gap between supply and demand. Each level of the system can make contributions that bring positive and creative solutions to old and new problems. Each team and committee must continue to demand representation from diverse, yet attentive, members to ensure that the specific needs of the thoracic organ recipients are properly reviewed and addressed. UNOS and its membership must continue to work together to meet the challenges of the growing acceptance of organ transplantation and the limited supply of donor organs. Continued efforts of politicians, health care professionals, and the general public must seek newer and more creative ways to manage the critical organ shortage and the ever-growing population of patients who seek heart transplantation as the only viable treatment option for their disease process. OPOs must continue their efforts to educate and promote organ donation and continue to work diligently toward increasing the pool of acceptable organ donors through improved patient management and the development of improved preservation and transport techniques. The transplant community must take the initiative to modify current legislation and to author new legislation to serve as better representors for the transplant patient population that desperately needs it.

  18. Microvolt T-Wave Alternans, Peak Oxygen Consumption, and Outcome in Patients with Severely Impaired Left Ventricular Systolic Function

    PubMed Central

    Gorodeski, Eiran Z.; Cantillon, Daniel J.; Goel, Sachin S.; Kaufman, Elizabeth S.; Martin, David O.; Hsich, Eileen M.; Blackstone, Eugene H.; Lauer, Michael S.

    2014-01-01

    Background Both abnormal microvolt T-wave alternans (MTWA) and low peak VO2 predict poor outcome in heart failure. However, their independent predictive properties have not been assessed in large scale cohorts. Methods We performed an observational prospective cohort study of 303 consecutive patients referred for metabolic stress testing. All had an ejection fraction fl40% and were considered candidates for transplantation. Patients with defibrillators did not have MTWA collected by our exercise laboratory and therefore were not included in the analysis. The primary endpoint was a composite of all-cause death or UNOS 1 transplantation. Results During 2.8 years there were 34 deaths and 17 transplantations. Patients with abnormal MTWA had a higher event rate (31/136, 23%, vs. 20/167, 12%, unadjusted HR 1.90, 95% CI 1.90-3.33, P=.03). The association remained significant after adjustment for 3 clinical variables (1.89, 95% CI 1.05-3.39, P=.03). After adding peak VO2 to the model the association was no longer significant (adjusted HR 1.18, 95% CI 0.64-2.17, p=.60). After accounting for peak VO2 and 28 other confounders in a matched propensity analysis, MTWA was not predictive (propensity-matched HR 0.79, 95% CI 0.37-1.66, P=.53). Conclusions We confirm the association of abnormal MTWA with poor outcome amongst patients with impaired left ventricular systolic function. However, this association is markedly attenuated after accounting for peak VO2. PMID:19560697

  19. [Experience in molecular diagnostic in hereditary neuropathies in a pediatric tertiary hospital].

    PubMed

    Fernández-Ramos, Joaquín A; López-Laso, Eduardo; Camino-León, Rafael; Gascón-Jiménez, Francisco J; Jiménez-González, M Dolores

    2015-12-01

    Introduccion. La enfermedad de Charcot-Marie-Tooth (CMT) es la neuropatia hereditaria sensitivomotora mas frecuente. Avances en el diagnostico molecular han incrementado las posibilidades diagnosticas de estos pacientes. Pacientes y metodos. Estudio retrospectivo de 36 casos pediatricos diagnosticados de CMT en un centro terciario en el periodo 2003-2015. Resultados. Se identificaron 16 pacientes con CMT1A por una duplicacion en PMP22; dos casos se diagnosticaron de neuropatia hereditaria con predisposicion a paralisis por presion, uno de ellos con una mutacion puntual en PMP22; un varon con un fenotipo leve desmielinizante se diagnostico de CMTX1 por mutacion en GJB1; un paciente con una hipotonia paralitica en el nacimiento y un patron axonal por mutacion en MFN2; un paciente de origen rumano se diagnostico de CMT4D por una mutacion en el gen NDRG1; una paciente con una atrofia muscular espinal congenita distal con neuropatia axonal leve asociada por mutacion en el gen TRPV4; tres niñas de una familia consanguinea de etnia gitana se diagnosticaron de CMT axonal con descargas neuromiotonicas por una mutacion en el gen HINT1; 12 pacientes no tienen diagnostico molecular actualmente, cuatro de ellos de etnia gitana. Conclusiones. CMT1A predomino en nuestra serie (44%), como corresponde a la bibliografia. Destacamos la descripcion de una paciente con una mutacion en TRPV4 recientemente descrita como causa de CMT2C y tres casos de una misma familia consanguinea gitana con la misma mutacion en el gen HINT1 recientemente publicada como causa de neuropatia axonal con neuromiotonia autosomica recesiva (AR-CMT2). El porcentaje de casos sin diagnostico molecular es similar al de grandes series europeas.

  20. [Not Available].

    PubMed

    Monereo Megías, Susana; Arnoriaga Rodríguez, María; Olmedilla Ishishi, Yoko Lucía; Martínez de Icaya, Purificación

    2016-01-01

    La obesidad es una enfermedad muy prevalente con múltiples complicaciones crónicas que se reducen o desaparecen tras pérdidas pequeñas (5-10%) pero mantenidas de peso. Sin embargo, mantener la pérdida de peso tras el tratamiento es muy difícil, siendo uno de los mayores retos en el control de esta enfermedad. Aunque las razones que contribuyen a recuperar el peso perdido son de diversa índole, relacionadas con la respuesta biológica a la restricción calórica y con la pérdida de adherencia al tratamiento, hasta un 20% de los pacientes son capaces de mantenerlo. Las claves del éxito están relacionadas con el mantenimiento de los hábitos de vida saludable, el ejercicio físico y una ingesta calórica razonable que permita realizar una vida normal, sin pérdida de vida social. En este sentido, aprender a distinguir las opciones de comida y bebida en una sociedad donde la vida social gira en torno a la mesa en muchas ocasiones es muy importante. Revisamos en este artículo las claves para mantener el peso tras una dieta, así como el papel de las bebidas fermentadas, en especial, la cerveza, en este proceso. En conclusión, mantener el peso perdido es más difícil que perderlo. El consumo leve-moderado de bebidas fermentadas como la cerveza no se asocia con incremento del peso. PMID:27571862

  1. [Frequency of cancer in a specialty hospital in Mexico City. Implications for the development of early detection methods].

    PubMed

    Herrera-Torre, Analy; García-Rodríguez, Francisco Mario; García, Rebeca Gil; Jiménez-Villanueva, Xicoténcatl; Hernández-Rubio, Angela; Aboharp-Hasan, Ziad

    2014-01-01

    Antecedentes: el cáncer es la segunda causa de muerte en México. El Hospital Juárez de México es una institución general de alta especialidad, por lo que la frecuencia de pacientes con cáncer atendidos en su Unidad de Oncología es una muestra representativa de la frecuencia de cáncer en el país. Objetivo: conocer la estadística de tumores diagnosticados en un hospital de tercer nivel. Material y métodos: estudio retrospectivo efectuado con base en la revisión de los expedientes guardados en los archivos de Anatomía Patológica de pacientes atendidos entre los años 2006 y 2010. Se registraron todos los casos positivos a cáncer de material obtenido mediante biopsia o pieza quirúrgica. Se agruparon por edad, sexo y sitios anatómicos. Resultados: se identificaron las 10 neoplasias más frecuentes en uno y otro sexo, los grupos de edad, y sexo más afectado. Conclusiones: la información obtenida refleja la realidad del país de población abierta no derechohabiente. En México, las mujeres padecen más cáncer que los hombres; las neoplasias de mama y tracto genital son las más frecuentes. Deben reforzarse los sistemas de detección oportuna para que la identificación de casos tempranos sea mayor en nuestra población.

  2. On Enumerating Frequent Closed Patterns with Key in Multi-relational Data

    NASA Astrophysics Data System (ADS)

    Seki, Hirohisa; Honda, Yuya; Nagano, Shinya

    We study the problem of mining closed patterns in multi-relational databases. Garriga et al. (IJCAI'07) proposed an algorithm RelLCM2 for mining closed patterns (i.e., conjunctions of literals) in multi-relational data, which is an extension of LCM, an efficient enumeration algorithm for frequent closed itemsets mining proposed in the seminal paper by Uno et al. (DS'04). We assume that a database considered contains a special predicate called key (or target), which determines the entities of interest and what is to be counted. We introduce a notion of closed patterns with key (key-closedness for short), where variables in a pattern other than the one in a key predicate are considered to be existentially quantified, and they are linked to a given target object. We then define a closure operation (key-closure) for computing key-closed patterns, and show that the difference between the semantics of key-closed patterns and that of the closed patterns in RelLCM2 implies different properties of the closure operations; in particular, the uniqueness of closure does not hold for key-closure. Nevertheless, we show that we can enumerate key-closed patterns using the technique of ppc-extensions à la LCM, thereby making the enumeration possible without storage space for previously generated patterns. We also propose a literal order designed for mining key-closed patterns, which will require less search space. The correctness of our algorithm is shown, and its computational complexity is discussed. Some preliminary experimental results are also given.

  3. Water Release from Cold Serpentinized Forearc Mantle During Subduction Associated with Changes in Incoming Oceanic Plate Thermal Structure and Plate Boundary Kinematics: New Insights

    NASA Astrophysics Data System (ADS)

    Kirby, S. H.

    2015-12-01

    Kirby, Wang, and Brocher (Earth Planets and Space, 2014) recently showed how the change in kinematics of the California margin from subduction motion to continental transform motion with the birth and growth of the San Andreas Fault System (SAFS) beginning at about 33 Ma BP likely led to a warming of the former forearc mantle and the release of water by serpentinite dehydration. Such discharges from serpentinized mantle increase fluid pressures along the SAFS under the Coast Ranges and this gives insights into both the low sliding resistance for the SAFS and the mobilization and ascent of some serpentinized mantle peridotites through the crust. Thermal modeling by others has also shown that changes in the incoming plate age and subduction rate can also lead to warming of the forearc mantle during subduction. This development gives insights into the Mesozoic and Paleogene ages of emplacement of some, but not all, California serpentinites. Recent mineralogical and geochemical observations of serpentinized blocks in serpentinize mélange bodies in the San Francisco Bay Area (Uno and Kirby, 2015; Lewis and Kirby, 2015, this session) suggest that these rocks sustained multiple stages of serpentinization that are broadly consistent with the model of Kirby et al. (2014). Previous studies of localized late-stage silica-carbonate-water alteration of serpentinite bodies in California by carbonated water suggest that this alteration occurred largely in Neogene time when the highest rate of water release from the former forearc mantle probably happened. I also suggest that the occurrence of serpentinite belts emplaced in Cenozoic time during changing plate-boundary kinematics, such as the Cenozoic closing of the Tethys Ocean bordering Eurasia and arc reversal and decreasing convergence rates under the Greater Antilles, may give insights into the serpentinite belts in those regions.

  4. [Identification of Mycobacterium avium-intracellulare complex by PCR of AIDS and disseminated mycobacteriosis].

    PubMed

    García-Elorriaga, Guadalupe; Degollado-Estrada, Edgar; Villagómez-Ruiz, Alfredo; Cortés-Torres, Nancy; Arreguín-Reséndiz, Lilián; Del Rey-Pineda, Guillermo; González-Bonilla, César

    2016-01-01

    Introducción: el objetivo de este artículo es Identificar y diferenciar el complejo MAC por PCR en pacientes con SIDA y micobacteriosis diseminada. Métodos: se llevó a cabo un estudio transversal para identificar MAC por biología molecular. Se sintetizaron dos conjuntos de iniciadores: MAV y MIN, para M. avium y M. intracellulare, respectivamente. El ADN total de células obtenidas de 29 aislados clínicos y muestras de suero de otros 24 pacientes con SIDA e infección micobacteriana diseminada fue extraído y se amplificó por PCR con los iniciadores MAV y MIN. Cada uno de los iniciadores MAV y MIN amplificó un segmento altamente específico de 1.3 kb del ADN homólogo, respectivamente. Resultados: veintinueve ADN de los aislados clínicos de MAC identificadas por Gen-Probe AccuProbes se amplificaron con los iniciadores MAV (M. avium). De las 24 muestras clínicas, 3 fueron positivas para M. avium y 6 para M. tuberculosis. Conclusiones: nuestros resultados demostraron que la técnica de PCR se puede aplicar para la diferenciación de M. avium y M. intracellulare por iniciadores específicos 16S rRNA. En pacientes con estadio avanzado de SIDA y en quienes se sospecha micobacteriosis diseminada, la presencia de anemia (incluso con cultivos negativos) fosfatasa alcalina elevada y una mediana de CD4 de 15.9/ml, se debe considerar seriamente el diagnóstico de infección por MAC; sugerimos que, de acuerdo con nuestros resultados, se justifica una estratificación más precisa de los pacientes en términos de sus recuentos de células T CD4.

  5. Bioavailability of iron measurement in two nutrients multiple solutions by in vitro and in vivo;a comparative methodology between methods.

    PubMed

    Bueno, Luciana; Pizzo, Juliana C; Freitas, Osvaldo; Barbosa Júnior, Fernando; dos Santos, José Ernesto; Marchini, Julio Sergio; Dutra-de-Oliveira, José Eduardo

    2013-01-01

    Objetivos: La biodisponibilidad de hierro presente en una formulación nutricional puede ser evaluada por in vitro y in vivo, ya que proporcionan para un estudio de línea cohesiva y proporcionado en la literatura. El objetivo de estudio fue evaluar la biodisponibilidad de hierro con in vitro y in vivo, dirigida a un análisis comparativo de dos formulaciones de suplementos nutricionales (A y B). Métodos: Fueron utilizados dos métodos descritos en la literatura que para evaluar la biodiponibilidad de hierro. Uno que es la simulación de digestión humana y otro por los niveles de hierro sérico después de la ingestión de la formulación en los seres humanos. Resultados: Los resultados obtenidos por la simulación in vitro de la digestión del tracto gastrointestinal humano fueron 0,70 ± 0,02 y 0,80 dialisibilidad 0,01% de hierro, respectivamente, para las formulaciones A y B. Los estudios in vivo, segú n se mide por las curvas de hierro en suero en seres humanos después de la ingestión de las formulaciones mostró coeficiente de variación Δ < 0, lo que indica que había una baja absorción de hierro. La biodisponibilidad de hierro a los dos multi-nutrientes soluciones fueron obtenidos por in vitro y in vivo mostraron que había una comparación de las metodologías utilizadas en soluciones acuosas de muchos nutrientes.

  6. [Language disorders. Diagnosis and treatment].

    PubMed

    Moreno-Flagge, Noris

    2013-09-01

    Objetivos. Se revisan los trastornos del lenguaje en el niño. Partiendo de su desarrollo normal, se provee un diagnostico diferencial de acuerdo con la sintomatologia que presenta en el momento de la consulta y se sugiere un abordaje para el niño con alteraciones del lenguaje desde el punto de vista del neuropediatra a la vez que se actualiza el manejo de algunas de sus formas. Desarrollo. La adquisicion del lenguaje es uno de los hitos clave del desarrollo del niño. El desarrollo social e intelectual del niño se ve afectado por el retraso en la adquisicion del lenguaje y este puede crear un efecto continuo de aislamiento y regresion, que pasa hacia un rendimiento academico pobre y, eventualmente, lleva hacia el desarrollo de problemas de aprendizaje y sociales. Existen estudios que muestran una relacion estrecha en el niño entre el desarrollo del lenguaje hablado y el lenguaje escrito y la importancia de la adquisicion del lenguaje como base de las habilidades de la escritura. Estos problemas son causa de mucha ansiedad en los padres. Conclusion. El conocimiento del problema permite al especialista captar tempranamente a los niños en la etapa preescolar y asegurarse de que provee los servicios adecuados. Tratado a tiempo, se puede modificar, de manera significativa, el aprendizaje del lenguaje y, con ello, evitar las complicaciones que inciden en su desarrollo. El especialista que trata con niños debe reconocer estos problemas y canalizarlos hacia la terapia adecuada.

  7. [What kind of health information search the spinal cord injured patients from Spain on the internet?].

    PubMed

    Bea-Muñoz, Manuel; Medina-Sánchez, María; Flórez-García, Mariano

    2015-04-16

    Introduccion. Internet es una alternativa para la educacion sanitaria en la poblacion. Los lesionados medulares consultan la red sobre cuestiones de su salud. Objetivo. Conocer cuales son las fuentes de informacion, los temas sobre salud mas consultados y la confianza en el material obtenido de la red por un grupo de lesionados medulares espanoles usuarios de Internet. Pacientes y metodos. Realizamos una encuesta a lesionados medulares espanoles mediante un cuestionario en Google Drive. Se accedia a el mediante un enlace en la pagina de ASPAYM-Asturias. El cuestionario incluia datos epidemiologicos y cuestiones sobre Internet, fuentes de informacion y confianza en ellas. Resultados. Contestaron 121 lesionados medulares (el 64%, hombres), con una edad media de 45 anos. La etiologia predominante era la traumatica (70%), y en el 72%, las lesiones eran paraplejias. El 83% prefiere consultar al personal sanitario. Busca en Internet mas del 70% de la muestra, y lo hace en paginas web en espanol. El tema de mayor interes es el material ortopedico. El 27% confia mucho o bastante en la informacion de la red, mientras que el 32% lo hace poco o nada. Conclusiones. Los resultados nos aproximan al uso de Internet que hacen los lesionados medulares espanoles. Asumiendo el sesgo inherente en un estudio de este tipo, mas del 70% de la muestra consulta sobre su salud en la red, sobre todo en paginas web espanolas. El tema mas buscado es 'material ortopedico y sillas de ruedas'. Solo uno de cada cuatro confia en los contenidos de la red, y la mayoria prefiere consultar sus problemas de salud directamente con los profesionales sanitarios.

  8. [NORMATIVE VALUES OF SF-6D QUESTIONNAIRE FOR CHILEAN DIABETES PATIENTS].

    PubMed

    Garcia-Gordillo, Miguel A; Collado-Mateo, Daniel; Olivares, Pedro R; Adsuar, José C

    2015-12-01

    Introducción: la diabetes mellitus es una de las enfermedades crónicas de mayor prevalencia e impacto económico a nivel mundial. La diabetes produce un impacto sobre la calidad de vida relacionada con la salud de las personas que la padecen. El cuestionario SF-6D permite evaluar la calidad de vida relacionada con la salud. Es uno de los cuestionarios más usados a nivel mundial, ya que permite conocer las preferencias sociales de los distintos estados de salud. Sin embargo, según nuestro conocimiento no se dispone de los valores normativos de este cuestionario en la población diabética chilena. Objetivo: reportar los datos normativos del cuestionario SF-6D en la población diabética chilena. Métodos: los datos fueron extraídos de la Encuesta Nacional de Salud (ENS 2009-2010) de Chile. En este estudio se incluyen 424 personas que presentan diabetes (143 hombres y 281 mujeres). Los datos se han presentado segregados por sexo y grupo de edad, así como por región, estado civil, hábito tabáquico, nivel de ingresos y estudios. Resultados: el índice de utilidad del SF-6D en mujeres chilenas con diabetes fue de 0,65 (± 0,15), mientras que en hombres fue 0,70 (± 0,15). Menos del 5% de la población declara una utilidad con valor 1. El índice de utilidad del SF-6D en pacientes con diabetes disminuye con la edad, en las situaciones de bajos ingresos y con niveles de educación bajos. Conclusiones: este estudio presenta los valores normativos chilenos del SF-6D derivado del SF-12 en pacientes con diabetes.

  9. [Not Available].

    PubMed

    Díaz, Toni; Ficapal-Cusí, Pilar; Aguilar-Martínez, Alicia

    2016-07-19

    Introducción: a pesar de la relevancia nutricional del desayuno para el desarrollo y su asociación a un mejor aprendizaje y rendimiento escolar, numerosos estudios ponen en evidencia que en muchos casos se omite o se hace mal.Objetivo: determinar la calidad del desayuno de estudiantes de entre 10 y 16 años con intención de determinar en qué momento sería conveniente realizar programas educativos sobre la importancia de esta comida y cómo mejorar su calidad.Método: estudio observacional, descriptivo y transversal a partir de un cuestionario con preguntas cerradas acerca de los hábitos de alimentación en el desayuno en estudiantes de educación primaria y secundaria.Resultados y conclusión: solo el 18,5% de los estudiantes realiza un desayuno de buena calidad y su mala calidad va aumentando progresivamente con los cursos y se asocia al hecho de desayunar solo. En ambos niveles educativos los alimentos más consumidos en casa pertenecen al grupo de los lácteos y los cereales, mientras que en el centro escolar, el bocadillo resulta el desayuno más habitual; no obstante se observan diferencias entre primaria y secundaria en cuanto al consumo de fruta y bebidas azucaradas, entre otros.Conclusión: sería interesante valorar la instauración de programas de desayuno escolar incluyendo en ellos no solo a estudiantes de primaria, sino también, y especialmente, a adolescentes pues son estos quienes omiten esta comida en mayor proporción. Las intervenciones deberían orientarse a corregir las desviaciones más habituales observadas en cada uno de los niveles educativos.

  10. Efficacy of social support on metabolic syndrome among low income rural women in Chiapas, México.

    PubMed

    Bezares-Sarmiento, Vidalma del Rosario; Bacardí-Gascón, Montserrat; Márquez-Rosa, Sara; Molinero-González, Olga; Estrada-Grimaldo, Martha; Jiménez-Cruz, Arturo

    2013-01-01

    Introducción: El propósito de este estudio fue valorar una intervención de soporte social entre mujeres rurales de Chiapas, sobre los cambios en el estilo de vida, el autoconcepto, y el síndrome metabólico (MS). Métodos: Se realizó una muestra de conveniencia entre todas la mayores de 16 años de una población rural marginada del centro de Chiapas. Se utilizaron dos cuestionarios. Uno sobre el auto-concepto de salud y el otro sobre el perfil de estilos saludables. Los componentes del MS se valoraron de acuerdo a los criterios de la Federación Internacional de Diabetes. La intervención se realizó durante un período de tres meses y se dividió en 13 sesiones que incluían soporte social (SS) y educación nutricional (EN). Resultados: Cumplieron con los criterios de inclusión, 586 mujeres. Al inicio del estudio 47% tenían MS; obesidad abdominal, 69%; altos niveles de glucosa, 27%; de triglicéridos, 56%; de presión arterial sistólica, 17%; de presión arterial diastólica, 15%; y bajos niveles de colesterol- HDL, 55%. Después de la intervención 38% presentaron MS y se observó una reducción de todos los componentes del MS. Al final del estudio se observaron cambios significativos en AF5, PETS-1 y algunos componentes del SM. Conclusiones: Después de una intervención de SS y EN, se observaron cambios significativos en varias dimensiones del AF5 y del PETS-1, así como en SM y todos los componentes del SM.

  11. An Arduino Investigation of Simple Harmonic Motion

    NASA Astrophysics Data System (ADS)

    Galeriu, Calin; Edwards, Scott; Esper, Geoffrey

    2014-03-01

    We cannot hope for a new generation of scientists and engineers if we don't let our young students take ownership of their scientific and engineering explorations, if we don't let them enjoy the hands-on cycle of design and production, and if we don't let them implant their creativity into a technologically friendly environment. With this educational philosophy in mind, Massimo Banzi and his team have developed and popularized the open source Arduino microcontroller board. The Arduino board has helped countless people in their science, electronics, robotics, or engineering projects, allowing them to build things that we have not even dreamed of. Physics instructors have also realized the advantages of using Arduino boards for lab experiments. The schools are saving money because the homemade experimental equipment is much cheaper than the commercial alternatives. The students are thankful for an educational experience that is more interesting, more loaded with STEM content, and more fun. As further proof of this new trend in physics education, Vernier5 is now documenting the use of their probes with Arduino boards. This is why we have developed an Arduino-based physics investigation of the simple harmonic motion (SHM) of a mass on a spring. The experimental data are collected with the help of an ultrasonic distance sensor and an Arduino Uno board. The data are then graphed and analyzed using Origin 9. This rich cross-curricular STEM activity integrates electronics, computer programming, physics, and mathematics in a way that is both experimentally exciting and intellectually rewarding.

  12. [Not Available].

    PubMed

    Ballesteros-Pomar, María; Villar-Taibo, Rocío; Calleja-Fernández, Alicia; Pintor-de-la-Maza, Begoña; Álvarez-Del-Campo, Cecilia; Vidal-Casariego, Alfonso; Cano-Rodríguez, Isidoro

    2016-06-03

    Los datos del estudio PREDYCES® nos revelaron que en España la desnutrición relacionada con la enfermedad (DRE) afecta a uno de cada cuatro pacientes hospitalizados. Esta cifra aumenta hasta el 36,8% en los pacientes hematológicos. Se calcula que un 20% de los pacientes oncológicos muere por complicaciones relacionadas con la DRE. Nuestro grupo se planteó en 2011 comenzar la implantación de un cribado nutricional en los servicios con mayor riesgo de DRE. La presente revisión trata de describir todo el proceso que hemos seguido para mejorar la situación nutricional en los pacientes ingresados en el Servicio de Hematología del Complejo Asistencial Universitario de León (CAULE), mayoritariamente con diagnóstico de neoplasias hematológicas. En un primer estudio piloto, detectamos una alta prevalencia de desnutrición, que tendió a aumentar durante la hospitalización. Además, solo el 8,3% los enfermos valorados recibieron algún tipo de soporte nutricional y no se estaban cubriendo sus necesidades ni calóricas ni proteicas, lo que se asociaba a un peor pronóstico. Por este motivo, nos decidimos a implantar de manera sistemática un cribado y una intervención nutricional adecuada, que comenzó en 2011 y que ha recibido el reconocimiento como Buena Práctica del Sistema Nacional de Salud.

  13. Effect of Liquid-Crystalline Epoxy Backbone Structure on Thermal Conductivity of Epoxy-Alumina Composites

    NASA Astrophysics Data System (ADS)

    Giang, Thanhkieu; Kim, Jinhwan

    2016-06-01

    In a series of papers published recently, we clearly demonstrated that the most important factor governing the thermal conductivity of epoxy-Al2O3 composites is the backbone structure of the epoxy. In this study, three more epoxies based on diglycidyl ester-terminated liquid-crystalline epoxy (LCE) have been synthesized to draw conclusions regarding the effect of the epoxy backbone structure on the thermal conductivity of epoxy-alumina composites. The synthesized structures were characterized by proton nuclear magnetic resonance (1H-NMR) and Fourier-transform infrared (FT-IR) spectroscopy. Differential scanning calorimetry, thermogravimetric analysis, and optical microscopy were also employed to examine the thermal and optical properties of the synthesized LCEs and the cured composites. All three LCE resins exhibited typical liquid-crystalline behaviors: clear solid crystalline state below the melting temperature (T m), sharp crystalline melting at T m, and transition to nematic phase above T m with consequent isotropic phase above the isotropic temperature (T i). The LCE resins displayed distinct nematic liquid-crystalline phase over a wide temperature range and retained liquid-crystalline phase after curing, with high thermal conductivity of the resulting composite. The thermal conductivity values ranged from 3.09 W/m-K to 3.89 W/m-K for LCE-Al2O3 composites with 50 vol.% filler loading. The steric effect played a governing role in the difference. The neat epoxy resin thermal conductivity was obtained as 0.35 W/m-K to 0.49 W/m-K based on analysis using the Agari-Uno model. The results clearly support the objective of this study in that the thermal conductivity of the LCE-containing networks strongly depended on the epoxy backbone structure and the degree of ordering in the cured network.

  14. [High performance of an implantable Holter monitor in the detection of concealed paroxysmal atrial fibrillation in patients with cryptogenic stroke and a suspected embolic mechanism].

    PubMed

    Rojo-Martinez, Esther; Sandín-Fuentes, María; Calleja-Sanz, Ana I; Cortijo-García, Elisa; García-Bermejo, Pablo; Ruiz-Piñero, Marina; Rubio-Sanz, Jerónimo; Arenillas-Lara, Juan F

    2013-09-16

    Introduccion. El holter implantable permite detectar fibrilacion auricular paroxistica (FAP) oculta en pacientes con ictus criptogenico, pero se desconoce que algoritmo de seleccion tiene un mayor rendimiento y la duracion optima de monitorizacion. Objetivo. Conocer la frecuencia y el tiempo hasta detectar la FAP mediante un holter implantable Reveal XT ® en pacientes con ictus criptogenico seleccionados por sospecha elevada de embolismo cerebral. Pacientes y metodos. Criterios de seleccion: ausencia de etiologia del ictus tras el estudio completo incluyendo un ecocardiograma transesofagico, monitorizacion ECG y holter de 24 horas, asi como confirmacion de oclusion aguda embolica de la arteria intracraneal por duplex transcraneal o bien alta sospecha de embolismo por caracteristicas de neuroimagen. Tras implantar el holter Reveal XT se formo a los pacientes para que emprendieran transmisiones todos los meses o ante sintomas. Se reviso la informacion online mensualmente y se realizaron visitas clinicas en las unidades de Neurologia y Cardiologia. Resultados. Se incluyeron 101 pacientes con ictus criptogenico y al menos un mes de seguimiento: edad media de 67 años, 54 mujeres (53,5%). Tiempo medio de seguimiento: 281 ± 212 dias. Se detecto FAP oculta en 34 pacientes (33,7%) y falsos positivos en 23 (22,8%). Mediana desde el implante hasta la deteccion de la arritmia: 102 dias (rango: 26-240 dias). En un 70% de los pacientes se registraron multiples episodios de FAP. El 75% de los eventos se detectaron durante los primeros seis meses de monitorizacion. Conclusiones. El algoritmo de seleccion de pacientes con ictus criptogenico segun sospecha de embolismo cerebral se asocio a una elevada frecuencia (33,7%) de FAP oculta con holter implantable. Uno de cada cuatro eventos sucedio tras los primeros seis meses de monitorizacion.

  15. HLA matching by amino acid/positions in double and triple combinations.

    PubMed

    Idica, Adam; Sasaki, Nori; Terasaki, Paul

    2006-01-01

    1. Began with the 2006 UNOS dataset and then selected for Caucasian donor/patients (post-1995 transplant and first transplant kidney only with full ABDR typing data). This was then split into cadaver donor (n = 20,542) and living donor (n = 21,890) populations. 2. Looked at every theoretical mismatch between donor and patients in the living donor population. Overall, 167 single, 4601 double, and 83,655 triple position/amino acid mismatches were included in the analysis. Two tallies for each mismatch were generated: "good" and "bad" based on patient's associated graft survival. 3. Generated a list of "bad" single, double, and triple position/ amino acid mismatches. 4. Looked at associated long-term graft survivals of patient/donor pairs with additive single, double, and triple "bad" mismatches in the cadaver donor population. 5. Survival curves of transplant pairs with associated mismatches were generated and compared with traditional standards of 0ABDR mismatch, 1 or more ABDR mismatch, and full 6ABDR mismatch survival curves. 6. The greatest effect was seen in re-grafted male patients where up to 50 double mismatches were associated with a 10-year survival 27% lower than 0ABDR mismatch. 7. Many of the "bad" position/amino acid mismatches identified were the same as those identified by generation of antibodies against Class I and Class II epitopes. This is evidence that antibody-defined epitopes and those functioning as transplantation epitopes influencing long-term graft survival are the same. 8. Overall, we are disappointed that position/ amino acid mismatches were not associated with more markedly lower survivals. It appears that current immunosuppression can largely negate the effect of mismatching for immunogenic epitopes.

  16. [A study of sexual function in migraine and cluster headache].

    PubMed

    Bellosta-Diago, E; Velazquez-Benito, A; Viloria-Alebesque, A; Iniguez-Martinez, C; Santos-Lasaosa, S

    2016-06-01

    Introduccion. La disfuncion erectil y sexual son sintomas comunes a muchas enfermedades cronicas cuyo diagnostico va a condicionar el manejo terapeutico de los pacientes. Objetivo. Valorar la funcion sexual en varones con migrana o cefalea en racimos (CR) comparandola con un grupo control. Sujetos y metodos. Estudio descriptivo transversal de 34 pacientes con migrana, 31 pacientes con CR y 60 sujetos control de edad inferior a 46 anos. La disfuncion erectil se valoro con el indice internacional de disfuncion erectil (IIEF), y el estado emocional, mediante el inventario de depresion de Beck. Resultados. La puntuacion media en el IIEF fue de 68,41 ± 10,09, 64,26 ± 5,73 y 59,33 ± 15,89 en los grupos control, con migrana y con CR, respectivamente (p = 0,041), y la diferencia es significativa entre controles y con CR (p = 0,036). En el grupo de pacientes migranosos, tres pacientes tenian disfuncion erectil leve, y uno, moderada. En el grupo de pacientes con CR, 12 puntuaron en rango de disfuncion erectil leve y dos cumplieron criterios de disfuncion erectil grave (p < 0,05). Al analizar las diferencias en los diferentes dominios del IIEF, estas fueron significativas en el dominio de satisfaccion global (p = 0,015) entre el grupo control y los pacientes con CR (p = 0,012). Conclusiones. Hemos encontrado una mayor frecuencia de disfuncion erectil y afectacion de la funcion sexual en terminos de satisfaccion global en los pacientes con migrana y con CR. Creemos que la valoracion de la funcion sexual en este tipo de cefaleas debe integrarse en nuestra practica clinica habitual.

  17. The Effect of Donor Race on the Survival of Black Americans Undergoing Liver Transplantation for Chronic Hepatitis C

    PubMed Central

    Pang, Phillip S.; Kamal, Ahmad; Glenn, Jeffrey S.

    2010-01-01

    The purpose of this study was to determine the effect of donor race on the outcome of black patients with chronic hepatitis C infection who undergo liver transplantation. The records of deceased donor liver transplantations that occurred in the United States between January 1998 and December 2007 were obtained from the United Network for Organ Sharing (UNOS). 26,212 records contained sufficient data to be included in the analysis. Of these, 11,989 (45.7%) were positive for hepatitis C virus (HCV) and 1,292 (4.9%) were both HCV-positive and black. Black recipients with white donors were found to have significantly worse outcomes compared to all other recipient-donor race combinations (p < 0.001). The crude five-year survival rate for black recipients who had a black donor was 14% higher than the five-year survival rate for black recipients who had a white donor. Multivariate regression analysis determined that a graft from a race-unmatched donor was an independent risk factor for graft failure (HR = 1.41, 95% CI 1.11-1.79) among HCV-positive black recipients, but not among HCV-negative black recipients, after adjusting for donor age, recipient age, cold ischemia time, serum creatinine, serum bilirubin, diabetes mellitus, body mass index (BMI), and donor cytomegalovirus (CMV) status. The observation that race-unmatched grafts are a risk factor in HCV-positive black recipients, but not in HCV-negative black recipients, suggests an alteration of the graft-host relationship by HCV. In conclusion, our results suggest that HCV-positive black recipients who undergo liver transplantation can have increased graft survival if their donor is black, with survival rates approaching that of white liver transplant recipients. PMID:19718638

  18. Role of adipose-derived stem cells in chronic cutaneous wound healing.

    PubMed

    Caruana, Giorgia; Bertozzi, Nicolò; Boschi, Elena; Pio Grieco, Michele; Grignaffini, Eugenio; Raposio, Edoardo

    2015-01-01

    Le ulcere cutanee croniche colpiscono circa l’1% della popolazione adulta e il 3.6% della popolazione con più di sessantacinque anni di età. Per quanto riguarda l’impegno finanziario per la terapia delle ulcere cutanee, questo è pari a sette miliardi di euro annui a livello mondiale. Le cellule staminali mesenchimali prelevate da lipoaspirato (ASCs) rappresentano una delle frontiere più promettenti della medicina rigenerativa. Diversi studi hanno, infatti, dimostrato l’efficacia terapeutica di questa popolazione di cellule staminali nel trattamento delle ulcere cutanee croniche. Le ASCs hanno caratteristiche morfologiche e funzionali paragonabili alle cellule staminali del midollo osseo (BMSCs), tuttavia se ne differenziano per la maggiore facilità di prelievo e isolamento, e per il loro più cospicuo numero. È, infatti, sufficiente eseguire una liposuzione tradizionale e in seguito utilizzare metodiche d’isolamento appropriate per ottenere un pellet di ASCs pronte per essere innestate nel fondo e nel margine dell’ulcera cutanea, al fine di promuoverne la guarigione. Diversi sono i protocolli d’isolamento; i più diffusi prevedono complicati e lunghi procedimenti, caratterizzati dal susseguirsi di differenti prodotti sia chimici sia biologici, i quali sono non solo costosi ma anche potenzialmente pericolosi. Il nostro protocollo d’isolamento richiede solo 15’ e prevede che il lipoaspirato sia prima sistemato in uno shaker cellulare e successivamente in una centrifuga così da ottenere le ASCs richieste per la terapia. L’uso delle ASCs si è rivelato una risorsa preziosa per la terapia delle ulcere cutanee croniche, accelerando significativamente il processo di guarigione e la rigenerazione dei tessuti; con protocolli d’isolamento efficaci e semplificati, il loro utilizzo routinario risulta essere facilitato.

  19. [Neovascularization corneal regression in patients treated with photodynamic therapy with verteporfin].

    PubMed

    Díaz-Dávalos, César David; Carrasco-Quiroz, Arturo; Rivera-Díez, Dirce

    2016-01-01

    Introducción: la neovascularización corneal es una condición que amenaza la visión, por lo general, se asocia a trastornos inflamatorios o infecciosos de la superficie ocular. Uno de los tratamientos actuales es la terapia fotodinámica, el uso de un fotosensibilizador para ocluir los vasos ha producido con éxito la trombosis microvascular con un daño mínimo al tejido normal circundante. El objetivo de este artículo es determinar cuantitativamente el porcentaje de regresión en la neovascularización corneal que presentan los pacientes tratados con terapia fotodinámica con verteporfirina. Métodos: estudio de tratamiento de antes y después; experimental, analítico, prospectivo y longitudinal. Resultados: de los 25 neovasos analizados, 8 vasos (32 %) presentaron al mes una oclusión total del 100 %, 15 vasos (60 %) una oclusión parcial en el rango de 15.3 al 85.1 %, y 2 vasos (8 %) empeoramiento en la vascularización corneal. El promedio del área de neovascularización corneal disminuyó significativamente en un 70 % de 0.147 ± 0.118 mm2 a 0.045 ± 0.046 mm2, (p < 0.0005) posterior a la terapia fotodinámica. No se reportaron efectos adversos. Conclusiones: la terapia fotodinámica con verteporfina es un procedimiento seguro y efectivo para reducir la neovascularización de la córnea y puede utilizarse para inhibir la angiogénesis en la córnea.

  20. [Functional assessment for people unable to walk due to spinal muscular atrophy and Duchenne muscular dystrophy. Translation and validation of the Egen Klassifikation 2 scale for the Spanish population].

    PubMed

    Fagoaga, Joaquín; Girabent-Farrés, Montserrat; Bagur-Calafat, Caritat; Febrer, Anna; Steffensen, Birgit F

    2015-05-16

    Introduccion. La escala Egen Klassifikation 2 (EK2), ampliacion de la escala EK, evalua la capacidad funcional de personas con atrofia muscular espinal (AME) y distrofia muscular de Duchenne (DMD) que estan en fase de silla de ruedas. Esta version es mas especifica para la AME que su antecesora. Objetivo. Analizar la validez y fiabilidad de la version española de dicha escala como instrumento de medicion de la capacidad funcional en pacientes afectos de AME y DMD que estan en silla de ruedas. Pacientes y metodos. Primeramente se realizo una traduccion-retrotraduccion al español de la version en ingles de la EK2 y, posteriormente, se estudio la fiabilidad de la version traducida. Para ello, se seleccionaron 39 pacientes, de edades comprendidas entre 4 y 60 años, que fueron valorados por dos observadores. Para evaluar la concordancia intraobservador se realizaron dos evaluaciones por un mismo observador, y para la interobservador, se realizo una tercera evaluacion por un segundo observador. Resultados. Los valores obtenidos referidos a la puntuacion total de los items de la escala (suma EK2) reflejan una fiabilidad intra e interobservador excelente, de 0,993 y 0,988, respectivamente. Asimismo, para cada uno de los items, la fiabilidad fue excelente, a excepcion de un item, en el que fue buena. Conclusiones. La version española de la escala EK2 es un instrumento valido y fiable para la poblacion española como herramienta de medicion de la capacidad funcional en pacientes con AME y DMD que estan en silla de ruedas.