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1

Su una teoria generale della misura ( r ? 1)-dimensionale in uno spazio ad r dimensioni  

Microsoft Academic Search

Sunto  In questo lavoro do una definizione della misura (r ? 1)-dimensionale della frontiera orientata di un insieme diBorel contenuto in uno spazio euclideo ad r dimensioni e dimostro alcune fra le pi notevoli propriet di tale misura.

Ennio De Giorgi

1954-01-01

2

Comunicato stampa Uno sguardo in anteprima sulla tre giorni pi attesa dal mondo ICT  

E-print Network

Comunicato stampa Uno sguardo in anteprima sulla tre giorni più attesa dal mondo ICT Non solo placement: ICT Days 2012 tra innovazione e creatività Spazio alle aziende (trentine e non) e nuove: i protagonisti di questa edizione. Annunciata l'inaugurazione del nodo italiano di EIT ICT Labs

3

Lab 2: Progettazione di controllori PID e in spazio di stato per un motore elettrico  

E-print Network

Lab 2: Progettazione di controllori PID e in spazio di stato per un motore elettrico (20+2 punti `e di procedere alla progettazione di regolatori PID e in spazio di spazio di stato per un motore di progettazione e prestazioni sia a livello teorico che sperimentale tra un regolatore PID con

Schenato, Luca

4

hurricane plan UNO HURRICANE PLAN  

E-print Network

hurricane plan #12;UNO HURRICANE PLAN TABLE OF CONTENTS INTRODUCTION....................................................................................................................................................... 1 I. HURRICANE EMERGENCY TEAMS Hurricane Emergency Implementation Team (HEIT)......................................... 2 PPoosstt

Li, X. Rong

5

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

NASA Astrophysics Data System (ADS)

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.

Selleri, Franco

2011-06-01

6

AMRICA LATINA. PORTAL EUROPEO Una herramienta colectiva al servicio del americanismo europeo  

E-print Network

Consejo Europeo de Investigaciones Sociales de América Latina (CEISAL). Este seminario científico titulado continente y todas las asignaturas en Humanidades y Ciencias Sociales estaban representadas. Este seminario, a disposición de la comunidad científica a través una página Web común a las dos redes involucradas en este

Paris-Sud XI, Université de

7

Aerodynamic characteristics of the Fiat UNO car  

Microsoft Academic Search

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

Costelli

1984-01-01

8

Aerodynamic characteristics of the Fiat UNO car  

SciTech Connect

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.

Costelli, A.F.

1984-01-01

9

Master en Derecho Internacional y Europeo en China Los estudiantes de derecho  

E-print Network

Master en Derecho Internacional y Europeo en China Los estudiantes de derecho pueden proseguir sus estudios de Derecho a través del International Law (LL.M.) La Universidad Autónoma de Madrid Máster se imparte en inglés cubre un amplio espectro de Derecho Europeo e I incluye cursos sobre aspectos b en

Autonoma de Madrid, Universidad

10

UNO PRE-PHARMACY PROGRAM Xavier University, College of Pharmacy  

E-print Network

UNO PRE-PHARMACY PROGRAM for Xavier University, College of Pharmacy Advisor: Dr. Skip Gallagher, applicants for admission to the professional program in the School of Pharmacy must: 1. Complete the required pre-pharmacy curriculum listed above with no grade less than a "C". 2. Have a minimum GPA of 2

Li, X. Rong

11

UNO PRE-PHARMACY PROGRAM Xavier University, College of Pharmacy  

E-print Network

UNO PRE-PHARMACY PROGRAM for Xavier University, College of Pharmacy Advisor: Sean Hickey Office, applicants for admission to the professional program in the School of Pharmacy must: 1. Complete the required pre-pharmacy curriculum listed above with no grade less than a "C". 2. Have a minimum GPA of 2

Li, X. Rong

12

UNO MECHANICAL ENGINEERING 2013 -2014 MATH 2111 (5)  

E-print Network

UNO MECHANICAL ENGINEERING 2013 - 2014 FRESHMAN FALL SP Calculus MATH 2111 (5) SOPHOMORE FALL SP JUNIOR FALL SP SENIOR FALL SP 15 18 18 14 17 15 15 15 Prerequisite Credit/Registration Math/Sci Mech/Mater Therm/Fluid Calculus MATH 2112 (5) Calculus of Sev Var MATH 2115 (3) Diff Eq MATH 2221 (3) Engr Anal

Kulp, Mark

13

Liver transplantation for neonatal hemochromatosis: Analysis of the UNOS database.  

PubMed

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. PMID:25557040

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

2015-03-01

14

Bol. Asoc. Herpetol. Esp. (2008) 192 El Mediterrneo Occidental constituye uno  

E-print Network

Bol. Asoc. Herpetol. Esp. (2008) 192 El Mediterráneo Occidental constituye uno de los 25 "hot, vicariance, western Mediterranean. Artículo Invitado #12;Bol. Asoc. Herpetol. Esp. (2008) 19 3 Como resultado

Carranza, Salvador

15

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

NASA Technical Reports Server (NTRS)

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.

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

1995-01-01

16

UNO PRE-PHARMACY PROGRAM UNIVERSITY OF LOUISIANA AT MONROE, COLLEGE OF PHARMACY  

E-print Network

UNO PRE-PHARMACY PROGRAM FOR UNIVERSITY OF LOUISIANA AT MONROE, COLLEGE OF PHARMACY Advisor: Sean's requested admission date cannot be used to satisfy pre-pharmacy requirements and will be excluded from all. To inquire about possible appeals, please contact the College of Pharmacy's Director of the Office of Student

Li, X. Rong

17

UNO PRE-PHARMACY PROGRAM UNIVERSITY OF LOUISIANA AT MONROE, COLLEGE OF PHARMACY  

E-print Network

UNO PRE-PHARMACY PROGRAM FOR UNIVERSITY OF LOUISIANA AT MONROE, COLLEGE OF PHARMACY Advisor: Dr years prior to the applicant's requested admission date cannot be used to satisfy pre-pharmacy of Pharmacy's Director of the Office of Student and Professional Affairs at 318-342-3800 or email caldwell

Li, X. Rong

18

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

ERIC Educational Resources Information Center

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,…

Dunac, Patricia S.; Demi, Kadir

2013-01-01

19

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

ERIC Educational Resources Information Center

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…

Feith, David

2013-01-01

20

Instrucciones para el Consentimiento de alguien que no es uno de los  

E-print Network

Instrucciones para el Consentimiento de alguien que no es uno de los padres a tratamiento médico Al final de la línea #1, escriba con letra de molde el nombre del menor. Sólo el nombre de un menor puede una copia a la forma. En las líneas #3 y #4, escriba con letra de molde el nombre completo del padre y

21

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

NASA Technical Reports Server (NTRS)

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.

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

1990-01-01

22

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

NASA Astrophysics Data System (ADS)

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.

Dunac, Patricia S.; Demir, Kadir

2013-11-01

23

Pre-Physical Therapy Advising Checklist UNO offers the prerequisite courses for admission into the Doctorate of Physical Therapy Program.  

E-print Network

2130 Abnormal Psychology PSYC 4530 Lifespan Development Psych PSYC 4100 English Composition (6) ENGL Description UNO course Course # Credit Hours (total hours required) Psychology (6) General Psychology PSYC PSYC 1520 Child Psychology PSYC 2110 Adolescent Psychology PSYC 2120 Adult Development and Aging PSYC

Li, X. Rong

24

Outcomes in pediatric hepatitis C transplant recipients: Analysis of the UNOS database.  

PubMed

HCV may lead to the development of ESLD in late childhood and, consequently, contributes to the need for liver transplantation. The aim of this study was to examine post-transplant outcomes in HCV-positive pediatric patients with ESLD from any cause and to determine the impact of the PELD scoring system, introduced in February 2002, on post-transplant patient and graft survival. A retrospective analysis of the UNOS database from 1994 to 2010 was performed to assess graft and patient survival in pediatric HCV-seropositive liver transplant recipients. Graft survival and patient survival comparing subjects in the pre-PELD era and post-PELD era were analyzed using Kaplan-Meier statistics. Factors associated with survival were identified using Cox regression analysis. Of 120 pediatric HCV transplant recipients, 80 were transplanted in the pre-PELD era and 40 were transplanted post-PELD. Median serum total bilirubin, INR, and creatinine were 4.8 mg/dL, 1.6, and 0.7 mg/dL in the pre-PELD era vs. 5.5 mg/dL, 1.7, and 0.6 mg/mL, respectively, in the post-PELD era (p NS). One-yr graft survival in the pre-PELD vs. post-PELD era was 65.0% and 89.7%, respectively (p < 0.01); corresponding three-yr graft survival was 57.3% vs. 76.2% (p = 0.04). One-yr patient survival in the pre-PELD vs. post-PELD era was 79.0% and 97.5%, respectively (p < 0.01); corresponding three-yr survival was 79.0% vs. 89.4% (p = 0.17). Twenty-eight patients (23.3%) were retransplanted: 24 (30%) in the pre-PELD era (median time to retransplant 272 days) and four (10%) in the post-PELD era (median time to retransplant 586 days). Early follow-up demonstrates a trend toward improved pediatric HCV liver transplant graft and patient survival in the post-PELD era. Superior outcomes may be attributed to pretransplant factors, improved surgical technique and better treatment options for HCV infection. PMID:25495572

Gupta, Meera; Bahirwani, Ranjeeta; Levine, Matthew H; Malik, Saloni; Goldberg, David; Reddy, K Rajender; Shaked, Abraham

2015-03-01

25

El Mediterráneo europeo: Una imagen de marca común frente a los países lejanos para los destinos tradicionalmente turísticos de la Unión Europea  

Microsoft Academic Search

En la actualidad el turismo se configura como uno de los sectores de mayor aportación al PIB de determinados países que en pocos años han visto cómo esta industria es capaz de configurarse como un motor fundamental de su economía. En el marco de la Unión Europea, cabe destacar países como Francia, España o Italia y podemos incluir también a

Mecedes Jiménez García

2008-01-01

26

U n a V e n t a n a A l F u t u r o El Instituto Weizmann de Ciencias es uno  

E-print Network

U n a V e n t a n a A l F u t u r o #12;El Instituto Weizmann de Ciencias es uno de los institutos básicas de los científicos del Instituto abarcan toda la gama de las Ciencias de la Naturaleza y las Ciencias Exactas: Ciencias de la Vida, Química, Física, Matemáticas y Ciencias de la Computación. A lo

27

Geodetic point positioning with GPS (Global Positioning System) carrier beat phase data from the CASA (Central and South America) Uno experiment  

SciTech Connect

The Global Positioning System (GPS) carrier beat phase data collected by the TI4100 GPS receiver has been successfully utilized by the US Defense Mapping Agency in an algorithm which is designed to estimate individual absolute geodetic point positions from data collected over a few hours. The algorithm uses differenced data from one station and two to four GPS satellites at a series of epochs separated by 30 second intervals. The precise GPS ephemerides and satellite clock states, held fixed in the estimation process, are those estimated by the Naval Surface Warfare Center (NSWC). Broadcast ephemerides and clock states are also utilized for comparative purposes. An outline of the data corrections applied, the mathematical model and the estimation algorithm are presented. Point positioning results and statistics are presented for a globally-distributed set of stations which contributed to the CASA Uno experiment. Statistical assessment of 114 GPS point positions at 11 CASA Uno stations indicates that the overall standard deviation of a point position component, estimated from a few hours of data, is 73 centimeters. Solution of the long line geodetic inverse problem using repeated point positions such as these can potentially offer a new tool for those studying geodynamics on a global scale.

Malys, S.; Jensen, P.A. (Defense Mapping Agency, Washington, DC (USA))

1990-04-01

28

Unione Europea Fondo Sociale Europeo  

E-print Network

Superiore e Universitaria" Experimental simulation of pre-eruptive conditions of "yellow pumice-eruptive conditions of "yellow pumice"-Stromboli (Aeolian arc)-Italy PhD thesis by: Tutor: Ida Di Carlo Dott. S pumice"-Stromboli INDEX INTRODUCTION 1 1. VOLCANOLOGICAL BACKGROUND 4 1.1 The Aeolian Archipelago

Paris-Sud XI, Université de

29

New OPTN/UNOS Classification System for Nodules in Cirrhotic Livers Detected with MR Imaging: Effect on Hepatocellular Carcinoma Detection and Transplantation Allocation.  

PubMed

Purpose To assess the effect of the new Organ Procurement and Transplantation Network (OPTN)/United Network for Organ Sharing (UNOS) policy on hepatocellular carcinoma (HCC) detection and liver transplant allocation in patients with cirrhosis undergoing dynamic contrast material-enhanced liver magnetic resonance (MR) imaging. Materials and Methods In this HIPAA-compliant institutional review board-approved retrospective study with waiver of informed consent, 247 patients (196 men, 51 women; mean age, 60 years ± 11 [standard deviation]) with liver cirrhosis who underwent evaluation for HCC with MR imaging were identified via database search. Three radiologists independently reviewed images and identified number and size of HCC based on criteria within either the prior or revised policy. Based on these interpretations, priority for liver transplantation for each patient was determined with prior and revised transplantation allocation criteria. HCC detection was compared between sessions by using McNemar tests, and interreader agreement for detection of at least one HCC was assessed by using ? coefficients. Results All three readers detected significantly more 1-2-cm HCCs with the revised policy (readers detected 22, eight, and 20 1-2-cm HCCs) versus the prior policy (no reader detected 1-2-cm HCCs) (P ? .031). All readers detected significantly fewer 2-5-cm HCCs with the revised policy (readers detected eight, 13, and 14 2-5-cm HCCs) versus the prior policy (readers detected 24, 21, and 24 2-5-cm HCCs) (P ? .027). For all readers, fewer patients met criteria for increased transplantation priority with the revised versus the prior policy (number of patients who received increased priority for the three readers were 4.9% [12 of 247] vs 9.3% [23 of 247]; 5.7% [14 of 247] vs 8.1% [20 of 247]; and 6.9% [17 of 247] vs 8.9% [22 of 247]). Interreader agreement was substantial for the prior policy (? = 0.607) and almost perfect for the revised policy (? = 0.813). Conclusion Among cirrhotic patients who underwent evaluation for HCC with MR imaging, the revised OPTN/UNOS policy led to increased detection of 1-2-cm HCCs, decreased detection of 2-5-cm HCCs, and fewer patients who met criteria for increased transplant priority. © RSNA, 2014. PMID:25299785

Rosenkrantz, Andrew B; Campbell, Naomi; Wehrli, Natasha; Triolo, Michael J; Kim, Sooah

2015-02-01

30

Spanish is Numero Uno for "Project Bright."  

ERIC Educational Resources Information Center

In New York State, the 24 brightest fifth and sixth graders from Avon, Caledonia, and York participated in a project funded by Title IV minigrants, distributed through BOCES. The children were bussed to a central point and permitted to study whatever they wished; Spanish was the first subject selected. (EJS)

Larew, Leonor A.

1978-01-01

31

Neurons and behavior: ex uno, plures.  

PubMed

Li et al. demonstrate that a single interneuron can regulate analog- and digital-like behaviors guided by two different postsynaptic neurons. Releasing a single neurotransmitter onto downstream neurons that express receptors with distinct biophysical properties enables a small set of neurons to direct a range of functional responses. PMID:25417147

Louis, Thierry; Tomchik, Seth M

2014-11-01

32

Diagnostic Performance of Gadoxetic Acid-enhanced Liver MR Imaging in the Detection of HCCs and Allocation of Transplant Recipients on the Basis of the Milan Criteria and UNOS Guidelines: Correlation with Histopathologic Findings.  

PubMed

Purpose To determine whether hepatobiliary phase ( HBP hepatobiliary phase ) imaging can improve the diagnostic performance of gadoxetic acid-enhanced liver magnetic resonance (MR) imaging in the detection of hepatocellular carcinomas ( HCC hepatocellular carcinoma s) and to investigate the accuracy of gadoxetic acid-enhanced MR imaging in the allocation of transplant recipients on the basis of the Milan criteria and United Network for Organ Sharing ( UNOS United Network for Organ Sharing ) guidelines. Materials and Methods This retrospective study had institutional review board approval; the requirement for informed consent was waived. Between June 2008 and June 2011, 63 patients who underwent liver transplantation (LT) were included. All patients underwent a gadoxetic acid-enhanced 3.0-T MR imaging examination of the liver that included HBP hepatobiliary phase images obtained 20 minutes after contrast material administration. Two abdominal radiologists independently assessed two MR imaging data sets to detect HCC hepatocellular carcinoma s: Set 1 included unenhanced and gadoxetic acid-enhanced dynamic images, and set 2 also included HBP hepatobiliary phase images. Patients were allocated into three groups: Those who did not meet the Milan criteria, those who did meet the Milan criteria with additional priority according to UNOS United Network for Organ Sharing guidelines, and those who did meet the Milan criteria without additional priority. Diagnostic performance of each data set in depicting HCC hepatocellular carcinoma s was compared by using jackknife alternative free-response receiver operating characteristics ( JAFROC jackknife alternative free-response receiver operating characteristic s). Sensitivity and accuracy of patient allocation were compared by using generalized estimating equations. Results Sixty-three HCC hepatocellular carcinoma s were found in 36 of 63 patients. Eight patients were classified as not meeting Milan criteria, 12 as meeting Milan criteria with additional priority, and 43 as meeting Milan criteria without additional priority. For the detection of HCC hepatocellular carcinoma s, reader-averaged figures of merit estimated with JAFROC jackknife alternative free-response receiver operating characteristic s were 0.761 for set 1 and 0.791 for set 2 (P < .001). Addition of HBP hepatobiliary phase images significantly improved sensitivity for the detection of HCC hepatocellular carcinoma s, particularly 1-2-cm HCC hepatocellular carcinoma s (six [20.7%] vs 13 [44.8%] of 29 [P = .008] for reader 1 and eight [27.6%] vs 12 [41.4%] of 29 [P = .041] for reader 2). Accuracy of patient allocation was 88.9% for set 1 and 92.1% for set 2 (P = .151). Conclusion Addition of HBP hepatobiliary phase images can significantly improve the diagnostic performance of gadoxetic acid-enhanced liver MR imaging in the detection of 1-2-cm HCC hepatocellular carcinoma s in liver transplantation candidates. In addition, gadoxetic acid-enhanced MR imaging showed 92.1% accuracy in patient allocation on the basis of the Milan criteria and UNOS United Network for Organ Sharing guidelines. © RSNA, 2014 Online supplemental material is available for this article. PMID:25203131

Lee, Dong Ho; Lee, Jeong Min; Baek, Jee Hyun; Shin, Cheong-Il; Han, Joon Koo; Choi, Byung Ihn

2015-01-01

33

Transplant Versus Resection for the Management of Hepatocellular Carcinoma Meeting Milan Criteria in the MELD Exception Era at a Single Institution in a UNOS Region with Short Wait Times  

PubMed Central

Background Management of hepatocellular carcinoma (HCC) in the Model for End-Stage Liver Disease (MELD) exception era remains regionally variable. Outcomes were compared for patients undergoing transplant versus resection at a single institution in a UNOS region with short wait times for organ availability. Methods All patients who underwent resection of HCC from January 2000 to August 2012 and patients who underwent transplant post-January 2006, during the Milan Criteria (MC)-based MELD exception policy for HCC, were identified. Primary outcomes were overall survival (OS) and recurrence-free survival (RFS). Results Two hundred fifty-seven patients were analyzed, of whom 131 underwent transplant and 126 underwent resection. All transplant patients met MC; 45 (36%) resection patients met MC. Median follow-up time was 30 months. Median wait time to transplant was 55 days; no patients dropped off the waitlist while awaiting an organ. Among patients meeting MC, transplant demonstrated significantly greater 5-year OS (65.7% vs. 43.8%; P = 0.005) and RFS (85.3% vs. 22.7%; P < 0.001) versus resection. For patients with hepatitis C, transplant (n = 87) demonstrated significantly improved 5-year outcomes compared to patients meeting MC who underwent resection (n = 21; OS: 63.5% vs. 23.3%; P = 0.001; RFS: 83.5% vs. 23.7%; P < 0.001). Conclusion In a region with short waitlist times for organ availability, liver transplant is associated with improved survival compared to resection for HCC within MC and should be considered for all patients meeting MC, particularly those with hepatitis C. PMID:24347475

SQUIRES, MALCOLM H.; HANISH, STEVEN I.; FISHER, SARAH B.; GARRETT, CRISTEN; KOOBY, DAVID A.; SARMIENTO, JUAN M.; CARDONA, KENNETH; ADAMS, ANDREW B.; RUSSELL, MARIA C.; MAGLIOCCA, JOSEPH F.; KNECHTLE, STUART J.; STALEY, CHARLES A.; MAITHEL, SHISHIR K.

2015-01-01

34

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

NASA Astrophysics Data System (ADS)

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.

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

1990-02-01

35

Erasmus Mundus CONVOCATORIAS PARA ESTANCIAS EN PAISES NO EUROPEOS  

E-print Network

es Erasmus Mundus? Es un programa de cooperación y movilidad que pretende promover educación de movilidad en ambos sentidos y el acceso a la educación superior. ¿Qué acciones financia? Esta convocatoria (EMJDs): Doctorados Conjuntos Erasmus Mundus. Acción 2: Consorcios Erasmus Mundus Movilidad 1: Consorcios

Escolano, Francisco

36

BOLETIN DE AVES MARINAS LATINOAMERICANAS VOLUMEN 2; NUMERO UNO  

E-print Network

normal. Esperamos que con 1a 11egada del invierno austral, las temperaturas bajen. Lluvias fuertes en 1a costa de Ecuador y Galapagos, y e1 sur de Brazil; aguas ca1ientes con cambios en vida marina en 1a isla--Con enfasis sobre aves acu~ticas de aguas marinas 0 dulces, esta revista tiene un nuevo redactor asociado

Duffy, David Cameron

37

Gli statement Ogni istruzione di uno script viene chiamata  

E-print Network

' indicata dal simbolo ;. Anche se in ActionScript il ; è opzionale, si consiglia di metterlo ugualmente per ActionScript. Tutte le volte che in un comando viene indicato un nome di una variabile, esso viene per incrementare un punteggio. I tipi In ActionScript le variabili non sono tipate, al contrario dei

Gribaudo, Marco

38

The UNO Aviation Monograph Series: The Airline Quality Rating 1998  

NASA Technical Reports Server (NTRS)

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.

Bowen, Brent D.; Headley, Dean E.

1998-01-01

39

The UNO Aviation Monograph Series: The Airline Quality Rating 1997  

NASA Technical Reports Server (NTRS)

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.

Bowen, Brent D.; Headley, Dean E.

1997-01-01

40

La gestione integrata clinico ambientale: lo spazio come risorsa terapeutica An integrated clinical-environmental management: Space as therapeutic resource  

Microsoft Academic Search

Dementia and Alzheimer's disease in particular, due to their characteristics of duration, complexity and irreversibility, provoke our interest to reflect on how to effectively approach the question of its management. Dealing the natural course of the illness, the aim is to establish care and assistance priorities, re- ducing symptoms and improving relational and emotional exchange between patient and environment. Studies

D. GOLLIN; C. BASSO; J. MCILWRATH; C. GABELLI

41

UNO PRE-PHYSICAL THERAPY ADVISING CHECKLIST Advisor: Dr. Jacqueline Nesbit Office: BIO 230 Phone: 504-280-6478 Email: jbnesbit@uno.edu  

E-print Network

__________ BIOS 1303 Human Anatomy & Phys 3 __________ BIOS 1301* Human Anatomy & Phys Lab 1 __________ BIOS 1313 Human Anatomy & Phys II 3 __________ BIOS 1311* Human Anatomy & Phys Lab 1 __________ ADVANCED BIOS** 3

Kulp, Mark

42

El discurso dramático-teatral latinoamericano y el discurso crítico: Algunas reflexiones estratégicas  

E-print Network

distinguir varios tipos cada uno de los cuales conlleva en sí una pluralidad. Un tipo lo constituye el discurso crítico teórico cuya finalidad es definir lo esencial dramático o lo dramático general, lo que se ha denominado teoría del drama o teoría de lo... lectura de los textos clásicos europeos o de las teorías fundadas en condiciones históricas y culturales exclusivamente europeas. Otro tipo es el discurso crítico-práctico sobre los textos teatrales o dramáticos el destinado a explicar o "interpretar...

Villegas, Juan

1984-10-01

43

ANUARIO AMERICANISTA EUROPEO, 22213872, N 11, 2013, Seccin Fondos p. 18 1 Recibido 20131024 Aceptado 20131205  

E-print Network

, Cultura y Deporte de España lleva a cabo varios proyectos de difusión del patrimonio documental Archivos Estatales del Ministerio de Educación, Cultura y Deporte español desarrolla, entre sus Estatales, Ministerio de Educación, Cultura y Deporte (España), cristina.diaz@mecd.es #12;CRISTINA DÍAZ

Paris-Sud XI, Université de

44

Programa de Estudios Hispnicos y Europeos Hispanic and European Studies Program-Universitat Pompeu Fabra  

E-print Network

. An introduction to Islam: Cambridge University Press. También, Said,Edward W. 1980. Orientalism. London [etc, desde la aparición del Islam como un formidable Imperio (siglo VII), hasta su sometimiento por parte de culturales entre Europa y el Islam, hunde sus profundas raíces en el pasado. · Al final del curso, los

Geffner, Hector

45

LA DOCENCIA EN MATERIA DE GÉNERO EN EL ESPACIO EUROPEO DE LA EDUCACIÓN SUPERIOR  

Microsoft Academic Search

La comunicación presentada por las ponentes, presenta el proyecto que un nutrido grupo de docentes e investigador\\/as en Ciencias Sociales de diversas universidades españolas y americanas han puesto en marcha con el objeto de crear una materia optativa con la que dar cumplimiento a un deber legal como es el de acotar el campo de conocimiento jurídico, político y sociológico

Magdalena Suárez Ojeda; Carolina Fernández-Salinero Miguel; C. Losa Contreras

46

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

PubMed Central

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

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

47

Mejora docente y adaptacin al Espacio Europeo de Educacin Superior Tabla II. Principales resultados conseguidos  

E-print Network

la Normativa de movilidad de la UPF, introduciendo garantías de calidad para la movilidad saliente al Mundo", para promover la movilidad saliente. Documento 14/12/2011 14. Mejora docente y adaptación componente de movilidad internacional. Web 10/04/2012 15. Mejora docente y adaptación al EEES Realización de

Geffner, Hector

48

Regime giuridico del farmaco negli ordinamenti italiano e spagnolo: la trasposizione del diritto farmaceutico europeo.  

E-print Network

??Nel presente lavoro di ricerca analizziamo, da una prospettiva tanto giuridica quanto metagiuridica (e, senz’ombra di dubbio, decisamente europeista), il regime giuridico-amministrativo dei farmaci di… (more)

Bombillar Saenz, Francisco Miguel and#60;1982and#62

2010-01-01

49

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

PubMed Central

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

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

2014-01-01

50

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

ERIC Educational Resources Information Center

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…

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.

51

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

PubMed

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

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

52

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

ERIC Educational Resources Information Center

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)

Frescura, Marina

1997-01-01

53

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

NASA Technical Reports Server (NTRS)

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.

Carrico, John S.; Schaaf, Michaela M.

1998-01-01

54

ASSOCIATE OF ARTS/ LOUISIANA TRANSFER DEGREE (AALT) AY 2011-2012 UNO College  

E-print Network

or 1159 MATH 1115 MATH 1031 or higher BIOS 1053 & 1063; BIOS 1073 & 1083; PHYS 1005 & 1006; CHEM 1017; HIST 2501 &2502 FREN 1001, 1002, 2001, 2002 FTCA/ENGL/FORL/HIST/PHIL/WGS 1000-level ANTH/ ECON appropriate prerequisite courses without credit toward graduation. English Composition II (3) Date: Math

Li, X. Rong

55

ASSOCIATE OF ARTS/ LOUISIANA TRANSFER DEGREE (AALT) AY 2011-2012 UNO Delgado Com. College  

E-print Network

ENGL 101 ENGL 1158 or 1159 ENGL 102 MATH 1115 MATH 128 MATH 1031 or higher MATH 129 BIOS 1053 & 1063 FREN 1001, 1002, 2001, 2002 FREN 101, 102, 201, 202 FTCA/ENGL/FORL/HIST/PHIL/WGS ENGL GE) Sequence in Biological or Physical Sciences with Labs (6) English Composition II (3) Date: Math

Li, X. Rong

56

ASSOCIATE OF ARTS/ LOUISIANA TRANSFER DEGREE (AALT) AY 2011-2012 UNO College  

E-print Network

or 1159 MATH 1115 MATH 1031 or higher BIOS 1053 & 1063; BIOS 1073 & 1083; PHYS 1005 & 1006; CHEM 1017; HIST 2501 &2502 SPAN 1001, 1002, 2001, 2002 FTCA/ENGL/FORL/HIST/PHIL/WGS 1000-level ANTH/ ECON appropriate prerequisite courses without credit toward graduation. English Composition II (3) Date: Math

Li, X. Rong

57

ASSOCIATE OF ARTS/ LOUISIANA TRANSFER DEGREE (AALT) AY 2011-2012 UNO Delgado Com. College  

E-print Network

ENGL 101 ENGL 1158 or 1159 ENGL 102 MATH 1115 MATH 128 MATH 1031 or higher MATH 129 BIOS 1053 & 1063 SPAN 1001, 1002, 2001, 2002 SPAN 101, 102, 201, 202 FTCA/ENGL/FORL/HIST/PHIL/WGS ENGL GE) Sequence in Biological or Physical Sciences with Labs (6) English Composition II (3) Date: Math

Li, X. Rong

58

The Geomagnetic Field Experiment LaACES UNO 2012-2013  

E-print Network

due to solar cycle. #12;Science Background · Earth has an intrinsic magnetic field due to movement field strength over the expected flight altitudes. #12;Science Background Past solar activity of molten metal core. · Magnetic influence is stronger near the core, weaker with radial distance. · Field

Li, X. Rong

59

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

ERIC Educational Resources Information Center

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…

Bowen, Brent, Ed.

60

Una economía de frontera con el norte Europeo: El desarrollo de Cataluña en los siglos XVIII al XX  

Microsoft Academic Search

El presente ensayo pretende evaluar la contribución que haya podido suponer la condición de territorio de frontera a las particularidades del proceso de desarrollo económico de Cataluña desde el siglo XVIII en adelante. En su mismo nacimiento como espacio político y administrativo diferenciado y con soberanía sobre el territorio, Cataluña fue una frontera o límite: la “Marca Hispánica” que el

Jordi Maluquer de Motes i Bernet

2001-01-01

61

ANUARIO AMERICANISTA EUROPEO, 22213872, N 11, 2013, Seccin Tema Central p. 217237 217 Recibido 20130830 Aceptado 20140206  

E-print Network

migrante no continente europeu. Tratase da análise crítica do discurso de jornais portugueses Discurso, proposta por Teun van Dijk. O objetivo é discutir as modalidades de representação as especificidades da migração feminina e da produção de discursos jornalísticos sobre a alteridade

Boyer, Edmond

62

A broken-symmetry study on the automerization of cyclobutadiene. Comparison with UNO- and DNO-MRCC methods  

NASA Astrophysics Data System (ADS)

The barrier height for automerization of cyclobutadiene (CBD) is examined by broken-symmetry (BS) HF, post-HF, and density functional methods. To remove the spin contamination error, we use an approximate spin projection (AP) method. Comparison between the results of BS methods and those of the localized UHF natural orbital (ULO) based Mukherjee's state-specific MRCC (ULO-MkCC) method shows that spin-unrestricted Brueckner doubles including perturbative triple excitations (UBD(T)) with the AP correction performs well within a framework of single reference approaches. On the other hand, UDFT methods except for UBLYP and UM06-2X give negative barrier heights, which are not consistent with the both the experimental and MRCC results.

Saito, Toru; Nishihara, Satomichi; Kitagawa, Yasutaka; Kawakami, Takashi; Yamanaka, Shusuke; Okumura, Mitsutaka; Yamaguchi, Kizashi

2010-10-01

63

ANUARIO AMERICANISTA EUROPEO, 2221-3872, N 10, 2012, Seccin Fondos p. 27-40 27 Recibido 2012-08-14 Aceptado 2012-11-26  

E-print Network

, Ministerio de Educación, Cultura y Deporte (España), josefa.villanueva@mecd.es #12;Mª JOSEFA VILLANUEVA. En el inventario que lleva el Ministerio de Educación, Cultura y Deporte están censados más de

Paris-Sud XI, Université de

64

Investigadores de la UA participan en un proyecto europeo para disminuir la emisin de gases contaminantes con filtros ecolgicos producidos a  

E-print Network

gasolina), como en líquidos (aguas industriales, aguas residuales, tintorerías, acondicionamiento de aguas compuestos orgánicos volátiles y de vertidos accidentales de gases industriales tóxicos, a través del resultantes de esta investigación serán integrados en sistemas industriales de filtración y equipos de

Escolano, Francisco

65

ANUARIO AMERICANISTA EUROPEO, 2221-3872, N 11, 2013, Seccin Tema Central p. 1-9 1 Gnero y Migraciones: Nuevas reconfiguraciones y  

E-print Network

subyacentes en los países de origen y destino, y las redes sociales (Lee 1966). No obstante, la centralidad consagrada al papel de las redes sociales en la migratorios son un campo consolidado en las ciencias sociales, lejos del trabajo

Boyer, Edmond

66

Recent Changes in UC Admissions Policies. Parent/Student Guide = Unos cambios recientes en los reglamentos de ingreso de la universidad de California. Guia de padres/estudiantes.  

ERIC Educational Resources Information Center

This parent/student guide describes recent changes in admissions policies at the University of California (UC). Traditionally, UC admitted the top 12.5% of high school graduating seniors, but beginning in 2001, the top 4% of students in the graduating class of every high school are eligible if they have completed 11 specific "a-f" courses by the…

EdSource, Inc., Palo Alto, CA.

67

Dear New/Re-Entering UNO Student: On behalf of the staff of Student Health Services, welcome to the University of New Orleans.  

E-print Network

, RUBELLA, DIPHTHERIA and TETANUS, in addition a MENINGOCOCCAL immuniza- tion is required. The Proof were born on or after January 1, 1957, two measles-mumps-rubella immunizations are needed. 2 1957, there is no measles-mumps-rubella requirement. 4. If you were born before 1957, the diphtheria

Kulp, Mark

68

Geodetic point positioning with GPS (Global Positioning System) carrier beat phase data from the CASA (Central and South America) Uno experiment  

Microsoft Academic Search

The Global Positioning System (GPS) carrier beat phase data collected by the TI4100 GPS receiver has been successfully utilized by the US Defense Mapping Agency in an algorithm which is designed to estimate individual absolute geodetic point positions from data collected over a few hours. The algorithm uses differenced data from one station and two to four GPS satellites at

S. Malys; P. A. Jensen

1990-01-01

69

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

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…

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

70

Studi lingue o economia / marketing e parli bene sia italiano sia tedesco? Ti interessa svolgere uno stage in un'istituzione Italo -tedesca?  

E-print Network

Studi lingue o economia / marketing e parli bene sia italiano sia tedesco? Ti interessa svolgere/informazioni supporto nei servizi di assistenza alle imprese direct marketing corrispondenza in italiano e tedesco

Möbius, Bernd

71

Outcomes in patients who are hepatitis B surface antigen–positive before transplantation: an analysis and study using the joint ISHLT\\/UNOS thoracic registry  

Microsoft Academic Search

Background: Hepatitis B surface antigenemia (HBsAg) has been considered at least a relative contraindication for heart transplantation, yet patients have undergone liver transplantation for hepatitis B–induced chronic liver disease, albeit with poorer results than for other liver diseases. The impact of asymptomatic hepatitis B infection on heart transplant outcome is not known.

Jeffrey D Hosenpud; Srinivas R Pamidi; Bennie S Fiol; Michael P Cinquegrani; Berkeley M Keck

2000-01-01

72

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)

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.

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

2003-01-01

73

A.U.L.A.S.: TABLA CORRESPONDENCIA NUEVOS CURSOS *En el caso de haber superado este nivel en cursos anteriores a 2008-2009, consulta con uno de  

E-print Network

.1 FRANC�S B2.2 FRANC�S B2+ Preparación DELF B2 ITALIANO CURSO realizado hasta 2007-2008 CURSO correspondiente a partir de 2008-2009 LENGUA GENERAL PREPARACI�N EXÁMENES OFICIALES Inicial ITALIANO A1 Elemental ITALIANO A2 Pre-Intermedio ITALIANO B1 Intermedio ITALIANO B1+ #12;Volver a la página principal Volver

Escolano, Francisco

74

Hans Jürgen Eysenck. Vida y obra de uno de los más influyentes científicos de la historia de la psicología * Hans Jürgen Eysenck. Life and work of one of the most influential scientist in the history of psychology  

Microsoft Academic Search

On this article, the biography and work of one of the most influential scientists in psychology history is briefly introduced. With his work, he laid the bases for the scientific study not only on personality, but also on human behaviour. Hen- ce, the most important contributions done by this author are highlighted in a wide range of areas of our

VANINA SCHMIDT; MARÍA EMILIA DE COSTA; OLIVÁN LUZMILA FIRPO; DAIANA VION; LUCAS CASELLA

2008-01-01

75

LA UA EN CIFRAS Evolucin series histricas: Alumnado  

E-print Network

horas) 4.140 Universidad Permanente 737 Alumnos enviados Programa Movilidad ERAMUS 255 Otros estudios horas) 2.497 Universidad Permanente 427 Alumnos enviados Programa Movilidad ERAMUS 255 NO EUROPEOS 23 SENECA 40 ERAMUS 122 NO EUROPEOS 20 SENECA 16 Hombre Total 1.327 Alumnos acogidos Programa Movilidad

Escolano, Francisco

76

Une nouvelle partition des dépenses publiques  

Microsoft Academic Search

[spa] Con el advenimiento del euro, la coordinación de las políticas presupuestarias se ha convertido en un objetivo europeo fundamental. La evolución del gasto público cobra una relevancia particular y requiere un enfoque global. A este respecto, el sistema de contabilidad nacional es la referencia privilegiada, sobre todo en el ámbito del control europeo de la evolución de los gastos

Jérôme Bascher; Marie Niedergang

2001-01-01

77

IL BLOCCO EPIDURALE: TECNICA, CONTROINDICAZIONI E COMPLICANZE  

Microsoft Academic Search

Il blocco epidurale va eseguito con tecnica sterile, perciò occorre indossare cappello, mascherina e guanti sterili e provvedere ad una accurata disinfezione della cute sovrastante il punto di iniezione. Principi Generali L'identificazione dello spazio epidurale si basa sulla sensazione di perdita di resistenza che si percepisce quando l'ago epidurale passa da un tessuto a maggiore densità (il legamento giallo) ad

Danilo Celleno; Mariagrazia Frigo

78

SISTEMI INTEGRATI PER LA RICERCA AREA SISTEMI INFORMATIVI  

E-print Network

elettronico in BOA - Bicocca Open Archive (http://www.boa.unimib.it/), l'archivio che raccoglie la produzione autenticarti nell'archivio. Dalla home page di BOA clicca sul pulsante My BOA, nel menu di sinistra, e spazio My BOA il record relativo alla tua tesi precaricato dalle Segreterie studenti nello status "da

Schettini, Raimondo

79

Informatica Grafica Marco Gribaudo  

E-print Network

spazio, presentano le stesse matrici di Vista e di Proiezione, ma diverse matrici Globali: #12;Normale 1, Verticale e Roll) ed una distanaza (il Dolly). Le DirectX invece, richiedono che tali parametri siano specificati utilizzando due vettori posizione (la posizione ed il target), ed un vettore normale (il World Up

Gribaudo, Marco

80

Astronomy & Astrophysics manuscript no. (will be inserted by hand later)  

E-print Network

Spazio, Universit`a di Firenze, Largo E. Fermi 5, Firenze, Italy 4 Centro Galileo Galilei, Santa Cruz De with the CAISMI­CNR for the TNG (the Italian National Telescope Galileo at La Palma, Canary Islands, Spain, Instrumentation: polarimeters, Near Infrared 1. Introduction The 3.5m Italian National Telescope Galileo (TNG

Testi, Leonardo

81

La verit`a matematica da Kant a Godel Alessandro Berarducci  

E-print Network

La verit`a matematica da Kant a G¨odel Alessandro Berarducci Pisa, 15 Marzo 2010 Questa `e la evidentemente essa non `e una scienza sperimentale? Kant 1787. L'intuizione Sentiamo cosa diceva un altro grande pensatore poco pi`u di un secolo prima. Immanuel Kant 1724-1804 "La rappresentazione dello spazio non pu

Berarducci, Alessandro

82

ciclo di conferenze organizzato da Politecnico di Milano,  

E-print Network

'Informazione, Corso di laurea in Ingegneria delle Telecomunicazioni, Liceo Scientifico Statale Leonardo da Vinci al di'Informazione Politecnico di Milano 02.2399.9714 quintafacolta@polimi.it Liceo Scientifico Statale Leonardo da Vinci Centro dello spazio, al di là del tempo Liceo Scientifico Statale Leonardo da Vinci Centro Congressi

83

The World Soul in Giordano Bruno’s De la causa, principio et uno (1584) and De l’infinito, universo e mondi (1584). The Revival of Bruno’s Philosophy in Late Eighteenth to Early Nineteenth-Century German Thought  

Microsoft Academic Search

\\u000a On 17 February 1600 in Rome, on the Campo de’ Fiori, the greatest Italian philosopher of the age as well as an excommunicated Dominican friar, Giordano Bruno (1548–1600), from the city of Nola in the kingdom of Naples, had his mouth stuffed, was stripped naked, tied to a stake and\\u000a burnt to ashes by the ‘Holy’ Inquisition, Sancta Romana et

Miklós Vassányi

84

Centro di Documentazione Europea di Verona ApprofondimentiApprofondimentiApprofondimentiApprofondimenti  

E-print Network

costituzionale italiano e europeocostituzionale italiano e europeocostituzionale italiano e europeocostituzionale italiano e europeo Università degli Studi di VeronaUniversità degli Studi di VeronaUniversità degli Studi

Romeo, Alessandro

85

RESEARCH ARTICLE Open Access Report of depressive symptoms on waiting list  

E-print Network

, diagnosis of primary medical disease, United Network for Organ Shar- ing (UNOS) priority status, cigarette from age, gender, current cigarette smoking, anxiety symptoms, main primary diagnosis, UNOS score

Paris-Sud XI, Université de

86

A&A 506, 14151428 (2009) DOI: 10.1051/0004-6361/200811373  

E-print Network

Astrofísica de Canarias, vía Láctea s/n, 38205 La Laguna, Tenerife, Spain 6 Télescope Héliographique pour l, Tenerife, Spain 7 Dipartimento di Astronomia e Scienza dello Spazio, Università degli Studi di Firenze on the island of Tenerife in the Spanish Observatorio del Teide of the Instituto de Astrofísica de Canarias

87

Universidad de AlicanteUniversidad de Alicante Jornada Acciones Marie Sktodowska-Curie de Horizonte  

E-print Network

welfare reform Task 2.2. Review changes to demographics and democratic structures relating to social 20202020 Proyecto Europeo FP7-PEOPLE-2012-IRSES CIVIL ENGAGEMENT IN SOCIAL WORK: DEVELOPING GLOBAL MODELS- CIVIL SW PIRSES-SOCIAL WORK: DEVELOPING GLOBAL MODELS- CIVIL_SW. PIRSES- GA-2012-318938 María

Escolano, Francisco

88

Comparacion internacional del gasto publico en Sanidad y Educacion de España con los paises de la OCDE 1982-96  

Microsoft Academic Search

En este trabajo analizamos el nivel del gasto publico en Sanidad y Educacion de España comparandolo con otros paises europeos y de la OCDE. El analisis incluye un modelo econometrico que estima la elasticidad del gasto con respecto al PIB y al numero de estudiantes. La principal conclusion es que España tiene un nivel bajo de gasto total, publico y

Isabel Neira; Ana Iglesias

2001-01-01

89

Comparacion internacional del gasto publico en sanidad y educacion en paises de la OCDE 85-90  

Microsoft Academic Search

En este trabajo trataremos de analizar el nivel del gasto publico en España comparandolo con otros paises europeos y de la OCDE, para ello nos centraremos en dos partidas fundamentales del gasto como son la sanidad y la educacion, ya que estos dos tipos de gasto son fundamentales para el bienestar ciudadano y asi mismo son indicativos del nivel asistencial

Ana Iglesias; Isabel Neira

1995-01-01

90

Les entreprises françaises sont-elles bien dimensionnées ?  

Microsoft Academic Search

[spa] ¿ Las empresas están o no bien dimensionadas ? Una comparación con Alemania y el Reino Unido - ¿ Las empresas francesas poseen o no la mejor dimension para adaptarse al choque del grand mercado único europeo y a la competencia creciente entre las diversas industrias nacionales que el mismo acarreará ? A partir de un muestreo de 3200

Gilbert Cette; Daniel Szpiro

1989-01-01

91

LA ADAPTACIÓN DE LOS ESTUDIOS DE DERECHO AL EEES: LA EXPERIENCIA DE LOS GRUPOS PILOTO EN LAS ASIGNATURAS DE DERECHO ADMINISTRATIVO I Y II EN LA FACULTAD DE DERECHO DE LA UNIVERSIDAD DE MÁLAGA  

Microsoft Academic Search

En este artículo se relata la experiencia llevada a cabo en la Facultad de Derecho de la Universidad de Málaga para aplicar de manera anticipada el Espacio Europeo de Educación Superior (EEES). El autor se encargó de impartir dos asignaturas, Derecho Administrativo I y II, de 3er y 4º curso de la Licenciatura en Derecho. La metodología seguida recibió la

Alberto Ruiz Ojeda

2011-01-01

92

La utilización de instrumentos de medida en situaciones de contacto de lenguas y de culturas: una reflexión metodológica  

Microsoft Academic Search

En el contexto europeo en el que vivimos, las situaciones de contacto de lenguasy de contacto de culturas, más que una excepción, son la norma, lo habitual. Es más, la propia historia de la Europa que conocemos es una historia de contacto, de intercambio y, en definitiva, de interacción continua entre distintas lenguas y culturas. Lo extraño o lo poco

Xabier Isasi Balanzategi; Nekane Balluerka Lasa; Arantxa Gorostiaga Manterola

2000-01-01

93

LA UA EN CIFRAS Evolucin series histricas: Alumnado  

E-print Network

.064 Universidad Permanente 811 509 Alumnos enviados Programa Movilidad* Mujeres Hombres Total 2.089 3.224 ERASMUS 124 33 NO EUROPEOS 5 1 SENECA 4 4 Alumnos acogidos Programa Movilidad* Mujeres Hombres Total 978 1 programa de movilidad hacen referencia al curso 2009-10 #12;

Escolano, Francisco

94

LA UA EN CIFRAS Evolucin series histricas: Alumnado  

E-print Network

.086 Universidad Permanente 830 575 Alumnos enviados Programa Movilidad* Mujeres Hombres Total 2.132 939 ERASMUS 362 220 NO EUROPEOS 27 27 SENECA 53 46 Alumnos acogidos Programa Movilidad* Mujeres Hombres Total 845 16 16 *Los datos referidos al programa de movilidad hacen referencia al curso 2010-11 Mujeres Hombres

Escolano, Francisco

95

Movilidad residencial en España: un análisis longitudinal  

Microsoft Academic Search

En este artículo se estima un modelo de duración en tiempo discreto para analizar la movilidad residencial con datos longitudinales. Los datos utilizados se refieren a los hogares españoles del Panel de Hogares Europeo (PHOGUE) realizado de 1994 a 2001. Además de la aportación que supone aplicar esta metodología en el contexto residencial español, otra novedad es trabajar con covariables

Raquel Arévalo Tomé; Loly Ferrero Martínez; Jacobo de Uña Álvarez

2008-01-01

96

OGPI. Torre de Control Campus San Vicente del  

E-print Network

, Desarrollo e Innovación. Jornada Acciones Marie Sklodowska-Curie de Horizonte 2020. 14 de Octubre de 2014 #12; +34965903803 ogpi@ua.es Dirigido a: Investigadores/as interesados en participar en acciones Marie S. Curie de Acciones Marie Curie: ITN, RISE, IF. - Ana Martínez (Técnico proyectos europeos, OGPI) 09:30 Claves en la

Escolano, Francisco

97

Pavia Graduate Conference in Political Philosophy  

E-print Network

'Doherty (University of South Wales, Newport) "Harming by degrees" ­ Justifying pre-emptive action against global warming through treating imminent harms as actual harms Lorenzo Del Savio (Istituto Europeo di Oncologia) Sebastiano Maffettone (LUISS, Roma) From Inter-National Justice to Global Justice 11.30-13 1. Political

Segatti, Antonio

98

Derechos Humanos DERECHOS HUMANOS  

E-print Network

Derechos Humanos DERECHOS HUMANOS EMIGRACI�N, INMIGRACI�N Y EXTRANJERIA CONVENIOS DE DOBLE NACIONALIDAD DERECHOS HUMANOS Centro de Información Administrativa del MAP Organización de las Naciones Unidas Minnesota Tribunal Europeo de Derechos Humanos Amnistía Internacional - Sección Española Asociación contra

Escolano, Francisco

99

Influencia Árabe en algunos aspectos de la vida Occidental  

Microsoft Academic Search

Los hombres y mujeres occidentales del siglo XXI todavía no se han percatado que muchos y muy variados usos y costumbres de su vida cotidiana son de origen árabe o fueron introducidos por ellos en la cultura de origen europeo. La península Hispánica fue una de las principales puertas de entrada de la civilización musulmana en Europa, donde el al-Andalus

Jorge Rampelbergh

100

University of New Orleans Page 1 of |____| Office of Research & Sponsored Programs Subrecipient Versus Vendor Form  

E-print Network

Versus Vendor Form UNO PROJECT/GRANT ID: SPEED KEY: UNO'S PI: PRIME SPONSOR: Proposed Subrecipient/Vendor required. PI Signature Date PI Printed Name ORSP REVIEW: Relationship : Vendor Subrecipient Reviewed by

Kulp, Mark

101

Residence Application Pontchartrain Halls Please complete and sign this application. Incomplete applications will not be accepted.  

E-print Network

.ft) 4 bdrm (90 sq. ft.) Prices for housing and meal plans can be found on our website housing applications will not be accepted. UNO Office of Student Housing Pontchartrain Hall North, Room 128 2000@uno.edu Website: housing.uno.edu Applicant Information: Name: Last First M.I. Date of Birth Mailing Address

Kulp, Mark

102

Space simulation techniques and facilities for SAX STM test campaign  

NASA Technical Reports Server (NTRS)

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.

Giordano, Pietro; Raimondo, Giacomo; Messidoro, Piero

1994-01-01

103

Los soportes histórico y científico de la pieza Humboldt & Bonpland, taxidermistas de Ibsen Martínez  

E-print Network

libremente en sus modelos reales, los célebres naturalistas europeos Alexander Von Humboldt (1769- 1859) y Aimé Bonpland (1773-1858), que lograron un prestigio internacional con motivo de la expedición americana comenzada en 1799, cuando sus edades sumaban... del gobierno de Rivadavia. Viene a pedir también el instrumental utilizado en la expedición americana, así como algunas cartas de recomendación. La relación es fría, distante. De manera implícita, esto significa el fin del trabajo conjunto, una...

Obregó n, Osvaldo

1999-10-01

104

rea de Derecho Internacional Pblico y Relaciones Internacionales  

E-print Network

Área de Derecho Internacional Público y Relaciones Internacionales CURSOS DE LIBRE ELECCI�N Europeo. 6. La Ciudadanía de la Unión Europea. 7. La protección de los derechos fundamentales en la Unión: Estudiantes universitarios. LUGAR: Aula DE/1-15P de la Facultad de Derecho. 4 créditos de libre configuración

Escolano, Francisco

105

La Escuela de Teatro de la Universidad Católica de Chile: Principios Pedagógicos  

E-print Network

anterior se crean tres departamentos: uno de Docencia, uno de Investigación y Experimentación Teatral y uno de Producción. La existencia de estas tres instancias demuestra las tres actividades centrales de esta Escuela, cuales son las de enseñar... todos al servicio de una obra artística. Sin embargo, el aporte de los teatros universitarios no se limitó a la producción de obras. También fue importante la labor que realizaron respecto a la formación de actores, mediante la creación de académicas...

Morel Montes, Consuelo

1993-10-01

106

THE UNIVERSITYof NEw ORlEaNS P O L I C E D E PA R T M E N T  

E-print Network

a Parking Decal.................................................................. 10 Alcohol and Drug Policy of the Alcohol and Drug Policies.................................................. 13 UNO Community Safety Rape Drugs....................................................... 16 Sexual Offender Registration

Kulp, Mark

107

Wide Eye Debris telescope allows to catalogue objects in any orbital zone .  

NASA Astrophysics Data System (ADS)

CGS SpA Compagnia Generale per lo Spazio formerly Carlo Gavazzi Space SpA, INAF (Istituto Nazionale di Astrofisica), DM (Dipartimento di Matematica Pisa) and ISTI-CNR (Istituto di Scienza e Tecnologie dell'Informazione), all members of an Italian Team studying Space Surveillance topics, have been awarded by ESA a Feasibility Study of an innovative optical system for debris surveillance obtained by applying a good combination of both innovative and state of the art solutions. This paper presents the architecture of the optical sensor used for space debris monitoring, catalogue build up and maintenance for collision avoidance, considering the upper LEO belt, the most demanding test case. The proposed sensor is the core element of an Optical Network which, for objects orbiting in the high LEO, can in principle increase performances with a relatively small impact on the overall system costs, compared to radar systems so far considered as baseline for LEO observations.

Cibin, L.; Chiarini, M.; Milani Comparetti, A.; Bernardi, F.; Ragazzoni, R.; Pinna, G. M.; Zayer, I.; Besso, P. M.; Rossi, A.; Villa, F.

108

FES Acatln Nombre de la disciplina deportiva: Bsquetbol  

E-print Network

. Síntesis/descripción breve: Deporte de conjunto, en el que dos conjuntos, de cinco jugadores cada uno. Debido a su dinamismo, espectacularidad y a la frecuencia de acciones anotadoras, es uno de los deportes con mayor número de espectadores y participantes en el mundo. Si te interesa practicar este deporte

Islas, León

109

The University of Nebraska at Omaha's Contribution to the Omaha Regional Economy  

ERIC Educational Resources Information Center

Education is a primary mission of metropolitan universities. This article measures the value of education at the level of a student credit hour-the metric. It applies this metric to determine the value of education transmitted at the University of Nebraska at Omaha (UNO) for one academic year and the total contribution of UNO to the economy of the…

Corcoran, William J.

2007-01-01

110

AHORA NOS TOCA A NOSOTROS VENIR A HACER : MIGRACIONES DE IDA Y VUELTA Y RECONSTRUCCIN DE LA IDENTIDAD NACIONAL  

E-print Network

ante situaciones de crisis. Los lazos culturales y las redes sociales hacen de España uno de los a reactivar este fenómeno. Los lazos culturales y las redes sociales hacen de España uno de los principales

Paris-Sud XI, Université de

111

Neo-Latin News, Volume 61, Numbers 1 & 2  

E-print Network

, aplicada de forma particular a Sep?lveda y m?s concretamente a las principales cuestiones antro- pol?gicas planteadas en estas tres obras, que son situadas en el contexto del cisma religioso europeo, de la conquista del Nuevo Mundo, y de la labor de la...44 seventeenth-century news Vol. 61, Nos. 1 & 2. Jointly with SCN. NLN is the official publica- tion of the American Association for Neo-Latin Studies. Edited by Craig Kallendorf, Texas A&M University; Western European Editor: Gilbert Tournoy...

Kallendorf, Craig

2013-01-01

112

Sic et non en el Libro de buen amor  

E-print Network

exponen las bases filosoficas y se explora hasta que punto el concepto impregna la sociedad. Se demuestra corno el antagonismo entre las dos espadas--la autoridad eclesiastica y la civil ? afecta de un modo profundo el vivir y el pensar tanto de la... en las relaciones entre los sexos y su dinhnica dentro de la sociedad. Se evidencia una relacion animica entre el Arcipreste y otros autores, probando que es tan europeo corno lo son Chaucer o Boccaccio. El autor se sirve del sic er non, que se...

Hinton, Melvin

1999-01-01

113

Remote Augmented Reality for Multiple Players Over Daniel C. M. Leung, Pak Shing Au, Irwin King, and Edward H. H. Yau  

E-print Network

them. The design goals of the Tele-Table are real-time and realistic user experience. The features of games such as board games (Chinese chess), card games (UNO) or inter- active games (air hockey) using

King, Kuo Chin Irwin

114

Heart Center Data Profile  

MedlinePLUS

... Citing Data Jump to top Organ Procurement & Transplantation Network U.S. Department of Health and Human Services Health ... Questions? Contact UNOS serves as the OPTN: United Network for Organ Sharing Post Office Box 2484 Richmond, ...

115

Lung Center Data Profile  

MedlinePLUS

... Citing Data Jump to top Organ Procurement & Transplantation Network U.S. Department of Health and Human Services Health ... Questions? Contact UNOS serves as the OPTN: United Network for Organ Sharing Post Office Box 2484 Richmond, ...

116

Liver Center Data Profile  

MedlinePLUS

... Citing Data Jump to top Organ Procurement & Transplantation Network U.S. Department of Health and Human Services Health ... Questions? Contact UNOS serves as the OPTN: United Network for Organ Sharing Post Office Box 2484 Richmond, ...

117

Heart/Lung Data Center Profile  

MedlinePLUS

... Citing Data Jump to top Organ Procurement & Transplantation Network U.S. Department of Health and Human Services Health ... Questions? Contact UNOS serves as the OPTN: United Network for Organ Sharing Post Office Box 2484 Richmond, ...

118

Pancreas Center Data Profile  

MedlinePLUS

... Citing Data Jump to top Organ Procurement & Transplantation Network U.S. Department of Health and Human Services Health ... Questions? Contact UNOS serves as the OPTN: United Network for Organ Sharing Post Office Box 2484 Richmond, ...

119

Kidney Center Data Profile  

MedlinePLUS

... Citing Data Jump to top Organ Procurement & Transplantation Network U.S. Department of Health and Human Services Health ... Questions? Contact UNOS serves as the OPTN: United Network for Organ Sharing Post Office Box 2484 Richmond, ...

120

Heartrending Choices.  

ERIC Educational Resources Information Center

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)

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

2000-01-01

121

Laudatio per la laurea honoris causa al prof. Juan Carlos Parodi prof. Domenico Palombo -Docente di Chirurgia vascolare  

E-print Network

vuoto. E questa altro non è che una delle tante possibili definizioni del genio, quella che Carl Gustav Jung definiva la "visione in uno specchio oscuro", la poetica spiegazione della capacità che permette

Genova, Università degli Studi di

122

Los desafíos de tratar con las atmósferas: Entrada, Descenso y Aterrizaje - Duration: 0:30.  

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 ...

123

Heart Transplant Procedure  

MedlinePLUS Videos and Cool Tools

... t make sense. So it's a very fair system. There's always issues surrounding it, but we -- most of us in the field feel that the UNOS, which is the governing body of -- it's the United Network for Organ -- 00: ...

124

Esami di Calcolo delle Probabilita del 26 Febbraio 2008 Esercizio n.1  

E-print Network

ragiona pensando che, sapendo che un lancio da testa, vi sono due possibilit´a che esca testa in entrambi ugualmente probabili (T, T), (C, C), (C, T) uno solo dei quali corrisponde all'evento che esca testa

Corrado, Tanasi

125

U.S. Transplantation Data  

MedlinePLUS

... of all patients, before and after their transplants Data reports To view data reports, first select the ... U.S. Scientific Registry of Transplant Recipients (SRTR). View data reports UNOS collects and manages all data pertaining ...

126

Profilassi antiemetica nella Chirurgia della Tiroide:clonidina VS ondansetron.  

E-print Network

??A dispetto dei recenti progressi raggiunti dalla pratica anestesiologica,l’ incidenza di PONV rimane uno degli effetti spiacevoli piu’ frequenti dell’ anestesia,talvolta piu’ importante del dolore… (more)

CONFORTI, FEDERICO

2014-01-01

127

Evaluation of MPLM Design and Mission 6A Coupled Loads Analyses  

NASA Technical Reports Server (NTRS)

Through the development of a space shuttle payload, there are usually several coupled loads analyses (CLA) performed: preliminary design, critical design, final design and verification loads analysis (VLA). A final design CLA is the last analysis conducted prior to model delivery to the shuttle program for the VLA. The finite element models used in the final design CLA and the VLA are test verified dynamic math models. Mission 6A is the first of many flights of the Multi-Purpose Logistics Module (MPLM). The MPLM was developed by Alenia Spazio S.p.A. (an Italian aerospace company) and houses the International Standard Payload Racks (ISPR) for transportation to the space station in the shuttle. Marshall Space Flight Center (MSFC), the payload integrator of the MPLM for Mission 6A, performed the final design CLA using the M6.OZC shuttle data for liftoff and landing conditions using the proper shuttle cargo manifest. Alenia performed the preliminary and critical design CLAs for the development of the MPLM. However, these CLAs did not use the current Mission 6A cargo manifest. An evaluation of the preliminary and critical design performed by Alenia and the final design performed by MSFC is presented.

Bookout, Paul S.; Ricks, Ed

1999-01-01

128

ISO Guest Observer Data Analysis and LWS Instrument Team Activities  

NASA Technical Reports Server (NTRS)

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.

Smith, Howard

2001-01-01

129

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

NASA Astrophysics Data System (ADS)

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.

Werner, Marian U.

1993-05-01

130

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

NASA Technical Reports Server (NTRS)

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.

Werner, Marian U.

1993-01-01

131

FSL: a fluid science laboratory for the International Space Station - the software Environment for the experiment execution  

NASA Astrophysics Data System (ADS)

The FSL (Fluid Science Laboratory) is a flexible, highly modular facility for the COF (Columbus Orbital Facility) - the European module of the International Space Station (ISS) - to support scientific microgravity research in fluid physics. Housed in an International Standard Payload Rack (ISPR), FSL will allow triggering and observation of phenomena inside transparent fluid matrices and at the surface of opaque media. Some possible FSL experiment fields are: Fluid convection and heat transfer, Marangoni motion of inclusions (drops or bubbles) in fluid matrix, Liquid bridges in fluid or gas matrix, Experiments on boiling, Experiments on critical point, Melting and solidification front and interaction with inclusions, Coalescence, Multilayer systems, Colloids, emulsions and aerosols, Particle agglomeration, Plasma crystal physics. The FSL is developed under contract with the European Space Agency (ESA). Alenia Spazio S.p.A. Turin (I) is Prime Contractor for the project. This paper briefly addresses the FSL architecture, then focuses on the set of instrumentation, services and utilities provided to the user to conceive, develop and conduct experiments, focusing in particular on the on-board software environment.

Pensavalle, Emanuele; Trinchero, Giorgio

2002-07-01

132

Regional Differences in Recipient Waitlist Time and Pre- and Post-Transplant Mortality After the 2006 United Network for Organ Sharing Policy Changes in the Donor Heart Allocation Algorithm  

PubMed Central

Objectives This study examined the impact of the United Network for Organ Sharing (UNOS) policy changes for regional differences in waitlist time and mortality before and after heart transplantation. Background The 2006 UNOS thoracic organ allocation policy change was implemented to allow for greater regional sharing of organs for heart transplantation. Methods We analyzed 36,789 patients who were listed for heart transplantation from January 1999 through April 2012. These patients were separated into 2 eras centered on the July 12, 2006 UNOS policy change. Pre- and post-transplantation characteristics were compared by UNOS regions. Results Waitlist mortality decreased nationally (up to 180 days: 13.3% vs. 7.9% after the UNOS policy change, p < 0.001) and within each region. Similarly, 2-year post-transplant mortality decreased nationally (2-year mortality: 17.3% vs. 14.6%; p < 0.001) as well as regionally. Waitlist time for UNOS status 1A and 1B candidates increased nationally 17.8 days on average (p < 0.001) with variability between the regions. The greatest increases were in Region 9 (59.2-day increase, p < 0.001) and Region 4 (41.2-day increase, p < 0.001). Although the use of mechanical circulatory support increased nearly 2.3-fold nationally in Era 2, significant differences were present on a regional basis. In Regions 6, 7, and 10, nearly 40% of those transplanted required left ventricular assist device bridging, whereas only 19.6%, 22.3%, and 15.5% required a left ventricular assist device in regions 3, 4, and 5, respectively. Conclusions The 2006 UNOS policy change has resulted in significant regional heterogeneity with respect to waitlist time and reliance on mechanical circulatory support as a bridge to transplantation, although overall both waitlist mortality and post-transplant survival are improved. PMID:24720925

Schulze, P. Christian; Kitada, Shuichi; Clerkin, Kevin; Jin, Zhezhen; Mancini, Donna M.

2014-01-01

133

Acknowledgements  

NASA Astrophysics Data System (ADS)

Ackowledgement logos The organizers of the Young Researchers' Meeting in Rome would like to thank all the scientists who participated in the meetings. We thank the Universities of Roma "Tor Vergata" and "La Sapienza" for hosting the first two editions of the conference, and the Physics and Astronomy Doctoral Schools of "La Sapienza" for sponsoring the 2nd meeting. We are grateful to Prof. Roberto Capuzzo-Dolcetta (Univ. "La Sapienza"), Prof. Enzo Marinari (Univ. "La Sapienza"), Prof. Pasquale Mazzotta (Univ. "Tor Vergata"), Prof. Giancarlo Ruocco (Univ. "La Sapienza"), Sig.ra Fernanda Lupinacci (Univ. "La Sapienza"), Dott. Marco Veneziani (Lessico Intellettuale Europeo-CNR), Dott.sa Rossella Cossu (Istituto per le Applicazioni del Calcolo-CNR) and Dott. Paolo Cabella (University of Rome "Tor Vergata") for logistical and technical support, and useful discussions. Conference photographs

2011-02-01

134

[In Process Citation].  

PubMed

Electronic structures and magnetic properties of the U(4+) complexes (C5Me4H)3UNO, (C5Me4H)3UCl, (C5H5)3UCH3, and (C5H5)3UCl are investigated by quantum chemical calculations. On the basis of wave function calculations including spin-orbit (SO) interactions, all complexes have nondegenerate nonmagnetic ground states. However, for L = CH3 and Cl magnetic doublet excited states are very low in energy, rendering the magnetic susceptibility strongly temperature dependent above ca. 50-100 K. In contrast, (C5Me4H)3UNO exhibits temperature-independent paramagnetism even at room temperature. The calculated susceptibilities agree well with available experimental data. An analysis of the ground states and the magnetic behavior is performed using crystal-field (CF) models with parameters extracted from the ab initio calculations, and with the help of natural orbitals contributing to the electron density, generated from scalar relativistic and SO wave functions for the ground states and selected excited states. Electronic g-factors calculated from the CF models agree well with ab initio data. The U-NO bond order in (C5Me4H)3UNO decreases somewhat due to SO coupling, because U-NO bonding ? orbitals with strong U 5f? character mix with nonbonding 5f? orbitals under the SO interaction. This complex also exhibits pronounced multireference character. All complexes afford U-ligand 5f covalent character. PMID:25426844

Gendron, Frédéric; Guennic, Boris Le; Autschbach, Jochen

2014-12-15

135

[Treatment of chronic prostatitis in prophylaxis of prostatic adenoma].  

PubMed

The results of a retrospective study of efficacy of prostamol uno in a standard single dose of 320 mg/day in prevention of chronic prostatitis recurrences and prostatic adenoma used for 5 years as an adjuvant to standard therapy of chronic prostatitis exacerbations were compared with those of standard course antibacterial and anti-inflammatory treatment alone. The analysis demonstrated that prostamol uno (Serenoa repens extract) in a dose 320 mg/day improves both subjective symptoms (data of IPSS, QoL scale) and objective ones (the absence of the disease progression and adverse effects, enhancement of the erectile function). Prostamol uno is effective for prevention of both recurrences of chronic prostatitis exacerbations and development of prostatic adenoma. PMID:22876632

Aliaev, Iu G; Vinarov, A Z; Demidko, Iu L; Spivak, L G

2012-01-01

136

Space Radar Image of Kilauea, Hawaii  

NASA Technical Reports Server (NTRS)

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.

1994-01-01

137

Space Radar Image of Kilauea Volcano, Hawaii  

NASA Technical Reports Server (NTRS)

This three-dimensional image of the volcano Kilauea was generated based on interferometric fringes derived from two X-band Synthetic Aperture Radar data takes on April 13, 1994 and October 4, 1994. The altitude lines are based on quantitative interpolation of the topographic fringes. The level difference between neighboring altitude lines is 20 meters (66 feet). The ground area covers 12 kilometers by 4 kilometers (7.5 miles by 2.5 miles). The altitude difference in the image is about 500 meters (1,640 feet). The volcano is located around 19.58 degrees north latitude and 155.55 degrees west longitude. 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 the interferometry analysis.

1994-01-01

138

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

NASA Technical Reports Server (NTRS)

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.

Martelli, Andrea

1994-01-01

139

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

NASA Astrophysics Data System (ADS)

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.

Martelli, Andrea

1994-11-01

140

Exploraciones sobre el soporte Multi-Agente en Minera de Datos  

E-print Network

como Clementine, DBMiner, Weka, etc. [11, 27, 24]. Weka se ha convertido en uno de los sistemas KDD más importante señalar que aunque Weka permite ahorrar mucho tiempo en el prepro- cesamiento, análisis y

Guerra Hernández, Alejandro

141

Introduccion "Bienvenidos  

E-print Network

JUDO, ahi te mandamos cosas "Si no tienes corre dinos para crearte uno "Llega temprano , asi te va a tocar maquina Proyecto de hoy: simulacion del rebote de una pelotita Judo "Lenguaje parecido a C o Java "Creado para aprender "No tan podroso pero muy facil de entender "Crear un proyecto: Corre JUDO File

Bor, Gil

142

Aproximación al análisis de motivos en secuencias nucleotídicas y protéicas  

Microsoft Academic Search

Resumen El descubrimiento y la identificación de patrones en secuen- cias de DNA, RNA y aminoácidos, hacen parte de uno de los objetivos fundamentales en el análisis de biosecuencias; y sus implicaciones tanto informáticas como biológicas dan los fundamentos conceptuales para encontrar o descubrir patrones representados gramaticalmente y con sentido biológico. Por otro lado, las bases conceptuales que tienen las

Daniel Restrepo-Montoya

143

FUNDAMENTACIN El tenis es un popular deporte de raqueta a nivel mundial. Se puede jugar entre dos  

E-print Network

TENIS FUNDAMENTACI�N El tenis es un popular deporte de raqueta a nivel mundial. Se puede jugar entre dos personas en individuales y entre dos parejas en dobles. Este deporte es uno de los más famosos en el mundo, destacando en mundiales y olimpiadas. Es considerado un deporte profesional y es jugado

Escolano, Francisco

144

THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA VOLUME 20, NUMBER 5 SEPTEMBER, 1948 On the Radiation of Sound into a Circular Tube, with an Applicationto Resonators  

E-print Network

with the tube apparatus.2 Furthermot.e, the intensive study of the propagation of electromagnetic waves in tubes, and furthermore givessomegeneralpoints of view on analogiesbetween electromagnetic and acoustic waves in tubes On the Radiation of Sound into a Circular Tube, with an Applicationto Resonators UNO Acoustics

Allen, Jont

145

El tráfico de objetos arqueológicos en los tiempos modernos. Discusiones y críticas en torno al mercado  

Microsoft Academic Search

El tráfico de objetos arqueológicos representa desde ha- The illegal trade of archaeological objects has repre- ce décadas uno de los grandes flagelos difíciles de con- sented for decades one of the most difficult scourges to trolar por parte de las políticas para la protección del control on behalf of Cultural Heritage protection poli- Patrimonio Cultural. El mercado negro funciona

Marco GIOVANNETTI; María Cecilia

146

RELACIN ENTRE NDVI Y CONTENIDO DE METALES EN RHIZOPHORA MANGLE EN EL SUROESTE DE PUERTO RICO  

E-print Network

Marianela Mercado Burgos1 , Ricardo Veguilla2 1 Estudiante Graduado ­ Departamento de Geología 2) Figura 4: Mangle Negro (Avicennia germinans) Mangle Rojo El mangle rojo es uno de las isla. Las otras especies son el mangle blanco, el negro y el botón. Su distribución de acuerdo a su

Gilbes, Fernando

147

¡Paracaídas!  

NSDL National Science Digital Library

En esta actividad, los participantes explorarán las fuerzas de gravedad y la resistencia al aire usando paracaídas. Usarán una variedad de materiales y técnicas para hacer los paracaídas y probarán si al dejar caer unos clips se puede reducir la velocidad de ellos.

2011-08-20

148

La instrumentación de la política regional española en la última década: el papel de los incentivos económicos a la inversión y al empleo  

Microsoft Academic Search

RESUMEN Los incentivos a la inversión y al empleo siguen constituyendo uno de los instrumentos básicos de la Política Regional en los países de la Unión Europea, a pesar de las exigencias que marca la transición a una economía basada en el conocimiento, contexto en el que las empresas y los países no sólo compiten por los recursos financieros, sino

Pedro Benito Moyano Pesquera; Olga Ogando Canabal

2003-01-01

149

Sistemas de pago a prestadores de servicios de salud en países de América Latina y de la OCDE  

Microsoft Academic Search

Además de ser uno de los componentes más importantes de las relaciones contractuales entre los agentes de los sistemas de salud, el sistema de pago a prestadores es relevante para algunos de los principales criterios de valoración de un sistema de salud, como la eficiencia y la calidad. En este artículo tratamos de proporcionar un marco analítico sencillo para comprender

Begoña Alvárez; Laura Pellisé; Félix Lobo

2000-01-01

150

Instrumentos para el desarrollo de dueños de pequeñas tierras forestales  

Microsoft Academic Search

Una de las formas de enfrentar los problemas derivados de la fragmentación de las tierras de vocación forestal (TVF) es la adopción de estrategias de intervención que lleven a la integración de las pequeñas propiedades en unidades productivas mayores o que permitan la utilización de tecnologías propias para propiedades mayores. Este es uno de los resultados del estudio \\

José Rente Nascimento; José Luis B. Mota Villanueva

2004-01-01

151

LA OFERTA DE SERVICIOS DEL SECTOR FINANCIERO FORMAL EN BOGOTÁ  

Microsoft Academic Search

Con base en la información utilizada para Bogotá a nivel de sector censal sobre el número de oficinas bancarias en cada uno de ellos, y después de controlar por diversas variables, se encuentra evidencia de que las entidades bancarias están sub-representadas en las áreas de la ciudad donde habitan los hogares de más bajos ingresos. En el caso de las

Carlos Medina; Jairo Núñez

2006-01-01

152

Requests are subject to edit upon entering into SIS+ ACTIVITY LOG  

E-print Network

and Composiiton Chinese New Course DENIED ENG CIVE 468/868 Bituminous Materials and Mixtures Laboratory #/cr Construction Materials and Specifications Add UNO#/taught/activity/prereq 1/20/2009 ENG CNST 306 Physical FORS 300 Forensic Taphonomy New Course 1/20/2009 CASNR HORT 453 Urban Soil Properties and Management

Farritor, Shane

153

The UniversiTy of new orleans Police DeParTmenT annUal secUriTy  

E-print Network

to upholding the Constitution of the United States, the laws of the State of Louisiana while providing superior with United States Code of Federal Regulations, Title 34, Part 668.46(c) (1) this 2010 Annual Security and that of others can we have a truly safe and secure campus. Authority of the UNO Police Department State

Kulp, Mark

154

Mobile apps Cloud Computing Ubiquitous  

E-print Network

/14 Tecnologie Web 4 #12;3 Android apps - I Cosa serve per sviluppare un'applicazione Android? · i tool di sviluppatori di testare le apps senza dover usare uno smartphone Android vero e proprio a.a. 2013/14 Tecnologie smartphone reali ­ il plugin ADT di Eclipse permette di gestire con facilità gli AVD Android apps - II

Goy, Anna

155

La descentralización en Colombia  

Microsoft Academic Search

Introducción. La asignación de responsabilidades entre las autoridades del gobierno central y el local, así como la relación fiscal entre estas dos instancias, constituye uno de los temas más complejos e importantes de las finanzas públicas. En la última década se ha presentado una tendencia mundial hacia la mayor descentralización, esto es, la delegación de un mayor número de prerrogativas

Alberto Alesina; Alberto Carrasquilla; Juan José Echavarría Soto

2000-01-01

156

La educación en España: indicadores del gasto en educación y comparación con los países de la UE  

Microsoft Academic Search

La educación es uno de los bienes que el sector público produce y producirá, porque además de tener características de bien público tiene externalidades, es un bien preferente y es un instrumento redistribuidor de riqueza. La eficiencia exigible al sector público precisa del estudio de las condiciones de provisión del bien. En concreto del conocimiento de los factores de los

1994-01-01

157

PUBLISHED ONLINE: 20 JULY 2009 | DOI: 10.1038/NGEO583 Asian dust transported one full circuit around  

E-print Network

circuit around the globe Itsushi Uno1 *, Kenta Eguchi2 , Keiya Yumimoto1 , Toshihiko Takemura1 , Atsushi and transported more than one full circuit around the globe in about 13 days. When the dust reached in a series of studies focusing on the generation and transport of Asian dust13,14 . Large-scale dust storms

158

Malaria: a un paso del fin Para el investigador Quique Bassat hablar de "erradicacin" es posible a largo plazo  

E-print Network

1 Malaria: a un paso del fin Para el investigador Quique Bassat hablar de "erradicación" es posible a largo plazo "Tras un fuerte ataque de malaria la persona se convierte en una piltrafa humana, yace. Según la OMS, la malaria, conocida también como paludismo, afecta cada año a unos 210 millones de

Geffner, Hector

159

Las personas con diabetes deben lograr un balance entre los  

E-print Network

en un lado del plato y los alimentos bajos en carbohidratos al otro lado. Karen Halderson, MPH, RD bajos en carbohidratos, manteniendo cada uno en su propio lado del plato o de la mesa. Comer vegetales en diferentes lados de su plato y ver si su plato está "balanceado". Sin embargo, muchas veces

160

Page 1 of 3 ADMINISTERED BY: Office of Vice  

E-print Network

responsibility. The UNO Office of Human Resource Management (HRM) understands that employing the best people of the University of Louisiana System. DEFINITIONS Classified Positions: Any office or position in the classifiedPage 1 of 3 ADMINISTERED BY: Office of Vice President for Business Affairs Policy No: TITLE

Kulp, Mark

161

Reliable Group Communication in an Ad Hoc Network Lawrence Klos Golden G. Richard III  

E-print Network

Reliable Group Communication in an Ad Hoc Network Lawrence Klos Golden G. Richard III {lklos, golden}@cs.uno.edu Department of Computer Science University of New Orleans New Orleans, LA 70148 to coordinate the remaining two responsibilities of message storage and retransmission. Section 2 presents

Richard III, Golden G.

162

Load-Balanced Routing through Virtual Paths: Highly Adaptive and Efficient Routing Scheme for Ad Hoc Wireless  

E-print Network

Hoc Wireless Networks Abdulrahman H. Altalhi Golden G. Richard, III Computer Science Department University of New Orleans New Orleans, LA 70148 {aaltalhi, golden} @cs.uno.edu Abstract Routing protocols of this paper is organized as follows. In Section 2, we describe the related protocols and briefly cover

Richard III, Golden G.

163

Virtual Paths Routing A Highly Dynamic Routing Protocol for Ad Hoc Wireless Networks  

E-print Network

. Altalhi Golden G. Richard, III Computer Science Department University of New Orleans New Orleans, LA 70148 U.S.A. {aaltalhi,golden}@cs.uno.edu Abstract In this paper, we introduce the Virtual Paths Routing based technique. This paper is organized as follows. In Section 2, we briefly review related works

Richard III, Golden G.

164

Proceedings of the 1995 Winter Simulation Conference ed. C. Alexopotdos, K. Kang, W. IL Lilegdon, and D. Goldsman  

E-print Network

Network for Organ Sharing (UNOS) was formed to develop and operate a nationwide system to allocate human to establish and execute organ allocation policies in the United States. The national system for collecting, and D. Goldsman ORGAN TRANSPLANTATION POLICY EVALUATION A. Alan B. Pritsker David L. Martin Janet S

Kuhl, Michael E.

165

Nunca ha sido fcil distinguir los hechos de la informacin falsa sobre los alimentos; las estrategias de mercadeo, las frases  

E-print Network

Nunca ha sido fácil distinguir los hechos de la información falsa sobre los alimentos; las unos mitos comunes y persistentes respecto a los alimentos: Mito: Las frutas y verduras frescas son más alimentos congelados y enlata- dos son tan nutritivos como los frescos. De hecho, ya que el licopeno es

Burke, Peter

166

Claude Lévi-Strauss, Lezioni giapponesi. Tre riflessioni su antropologia e modernità  

Microsoft Academic Search

Excelente iniciativa la de Lorenzo Scillitani, de traducir unos trabajos de Claude Lévi-Strauss al italiano, de sumo interés para la Antropología, la Historia social, el Derecho comparado y la Francia de la separacion del Estado y de las Iglesias, que está a punto –según Lévi-Strauss– de convertirse en musulmana.

Guillermo Hierrezuelo Conde

2011-01-01

167

Department of Computer Engineering Fall 2012 Harris Water Bottle  

E-print Network

PENNSTATE Department of Computer Engineering Fall 2012 Harris Water Bottle Overview The project's goal was to measure the amount of water exiting a water bottle and send this information to a cellular) o Found Bluetooth shield for Arduino Uno R3 o Found flow sensor o Developed water bottle o Developed

Demirel, Melik C.

168

COMPARAZIONE DI MODELLI DI INTERAZIONE UOMO MACCHINA BASATA SULLA TASK ANALYSIS PER SITI WEB DI  

E-print Network

aspetti più critici dello shopping online per beni di largo consumo è rappresentato dall'usabilità dei siti: l'esperienza di shopping online comporta, infatti, un cambiamento radicale delle abitudini e/informatico, uno degli aspetti più critici dello shopping online è rappresentato dall'usabilità dei siti che può

Schreiber, Fabio A.

169

TURISMO SOSTENIBLE Y BIODIVERSIDAD EN LA ORINOQUIA COLOMBIANA  

Microsoft Academic Search

El turismo sostenible y la biodiversidad, es el resultado de una investigación realizada en el marco de un macroproyecto de producción limpia, desarrollado en la Unitropico, Yopal- Colombia. El turismo es uno de los renglones de la economía regional, que en los últimos años ha estado al orden del día de las políticas públicas departamentales, dado la gran variedad de

Martha Edda León Sarmiento

2007-01-01

170

Indicadores internacionales de Soberanía Alimentaria. Nuevas herramientas para una nueva agricultura  

Microsoft Academic Search

La crisis alimentaria del año 2008 situó en la agenda política, una vez más, uno de los retos globales más importantes que la humanidad debe afrontar: satisfacer el derecho a la alimentación de una manera sostenible. La Soberanía Alimentaria es un concepto, propuesto y desarrollado por numerosas organizaciones campesinas, que puede contribuir al objetivo planteado. No obstante para aumentar el

Miquel Ortega-Cerdà; Marta G. Rivera-Ferre

2010-01-01

171

Environmental Health and Safety Office DATE: February 21, 2005  

E-print Network

Heads FROM: Jerry Bounds Risk Manager RE: Second Quarter Safety meeting In compliance with Office of Risk Management's requirement to conduct quarterly safety meetings, this is to inform you not hesitate to call me at x6498or contact me by e-mail at jbounds@uno.edu Risk Management 2000 Lakeshore Drive

Li, X. Rong

172

Apuntes sobre 'Fulgor y muerte de Joaquín Murieta' de Pablo Neruda  

E-print Network

. Uno—Cuál es nuestro deber? Otro—Mandarlos al diablo! Otro-To hell! To hell! Otro—Quemarlos! Otro—Ahorcarlos! (p. 51). d) Formas de civilización. Para Neruda los EE.UU. es un lupanar. El cuadro tercero de evidente intención simbólica contiene...

Droguett, Ivá n

1968-10-01

173

Titan Toy Drive Wish List Your Donation is Greatly Appreciated!  

E-print Network

Cards · UNO Cards · Board Games: Apples to Apples, Connect Four, Yahtzee, Monopoly, Chess, Checkers-Held Electronic Games · Nintendo Game Boys and Games · PlayStations/XBoxes/Wii's and Games · Disposable Cameras · Digital Cameras & Photo Paper · Flip Video Cameras · iPads/Laptops · Bicycles/Scooters/Razors · Gift Cards

de Lijser, Peter

174

Las estadísticas Oficiales de Turismo: principales lagunas en el contexto nacional e internacional \\/Official Statistics of Tourism: Major Gaps in the National and International Context  

Microsoft Academic Search

En el ámbito de las estadísticas de turismo se han producido notables desarrollos en los últimos años, tanto por parte del sector público como del privado. El actual sistema de estadísticas oficiales de turismo en España se puede considerar como uno de los más desarrollados en el contexto internacional pero todavía persisten importantes lagunas de información. La comparabilidad de resultados

FERNANDO CORTINA GARCIA

2011-01-01

175

TURISMO Y DESARROLLO: DOS CONCEPTOS REVISITADOS Y UNA PRETENDIDA RELACIÓN CAUSAL  

Microsoft Academic Search

El autor del breve artículo que acabo de transcribir es Eduardo Fayos-Solá, sin duda uno de los turisperitos españoles más conocidos internacionalmente. Doctor en economía por la Universidad de Valencia, ha realizado estudios en universidades de USA (Minnesota) Reino Unido (Oxford) y Suecia (Estocolmo). Además de ser profesor titular de Economía Aplicada en la Universidad de Valencia, ha sido profesor

Francisco Muñoz de Escalona

2011-01-01

176

PRODUCTO, PRODUCCIÓN, PRODUCIR (CONCEPTOS: ESPECIAL REFERENCIA AL TURISMO)  

Microsoft Academic Search

Desde hace algunos años se ha puesto de moda el uso de la palabra producto. Antes se hablaba de bienes o de mercancías pero ahora se prefiere producto. Tanto que incluso se habla del producto España, por ejemplo. Lo más curioso es que el producto o la producción, son dos sustantivos que derivan del verbo producir, uno de los verbos

Francisco Muñoz de Escalona

2010-01-01

177

El turismo político durante la Guerra Civil: viajeros británicos y técnicas de hospitalidad en la España republicana, 1936-1939  

Microsoft Academic Search

Este trabajo estudia uno de los principales medios de propaganda que empleó la República española para conquistar a la opinión internacional durante la Guerra Civil: los viajes organizados de personalidades extranjeras. El turismo político, a veces considerado como una peculiaridad de los regímenes socialistas, fue empleado por los dos bandos durante el conflicto, pero los republicanos lo practicaron con más

Hugo García

2006-01-01

178

LA CULTURA COMO INVERSIÓN TURÍSTICA. UNA REFLEXIÓN A PROPÓSITO DEL GUGGENHEIM BILBAO  

Microsoft Academic Search

El turismo, objeto de diversas disciplinas, es uno de los sectores más relevantes de la economía mundial, siendo en España la primera industria nacional. En los último años el turismo cultural se ha revelado como un motor esencial de desarrollo para bastantes territorios. Un caso sobresaliente es el conocido como «efecto Guggenheim» que desde su creación en 1997 se ha

Ainhoa Aguirregoitia Martínez

2011-01-01

179

PUESTA EN VALOR DE RECURSOS RURALES EN LOS PROGRAMAS DE INNOVACIÓN RURAL EN CASTILLA-LA MANCHA  

Microsoft Academic Search

El patrimonio histórico, cultural, arquitectónico y natural se ha convertido en uno de los elementos diferenciadores del turismo en España. Por este motivo, este segmento viene experimentando, en los últimos años, un importante crecimiento tanto desde el punto de vista de la oferta como de la demanda. Buena parte de este incremento viene motivado por las intervenciones de los programas

José Mondéjar Jiménez; Juan Antonio Mondéjar Jiménez; Manuel Vargas Vargas; María Leticia Meseguer Santamaría

2008-01-01

180

Office of Student Financial Aid & Scholarships Administration Building, Room 1005  

E-print Network

70148-2050 Telephone: (504) 280-6603 FAX: (504) 280-3973 E-MAIL: FINAID@UNO.EDU Unaccompanied Homeless an unaccompanied homeless youth after July 1, 2008 This means that, after July 1, 2008, ___________________ (Student Name) was living in a homeless situation, as defined by Section 725 of the McKinney-Vento Act

Li, X. Rong

181

Office of Student Financial Aid & Scholarships Lakefront Campus, 2000 Lakeshore Drive  

E-print Network

, LA 70148 FAX: (504) 280-3973 E-MAIL: PECFORM@UNO.EDU Unaccompanied Homeless Youth Verification an unaccompanied homeless youth after July 1, 2008 This means that, after July 1, 2008, ___________________ (Student Name) was living in a homeless situation, as defined by Section 725 of the McKinney-Vento Act

Li, X. Rong

182

IL MONASTERO DI REASK E L'ORIENTAZIONE DEI LUOGHI DI CULTO CRISTIANI NELL'IRLANDA MEDIOEVALE  

Microsoft Academic Search

1. Introduzione Durante il primo millennio dopo Cristo il Cristianesimo ebbe grande impatto sulla società celtica irlandese e su quella romano-celtica britannica. Uno degli effetti più evidenti nel caso dell'Irlanda fu l'introduzione dell'abitudine alla scrittura su vasta scala. Questa fu un'innovazione di notevole importanza in quanto sappiamo, come ci testimonia anche Giulio Cesare nei \\

ADRIANO GASPANI

183

Il Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi" of-fre la possibilit a giovani ricercatori di svolgere la loro a vit in se ori  

E-print Network

Il Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi" of- fre la possibilità Sole 24 ORE Business Media Il Museo Storico della Fisica e Centro Stu- di e Ricerche "Enrico Fermi" è'uomo e all'energia. Nel se ore dell'energia il Centro Fermi ha dedicato uno dei propri proge strategici

184

BOLETN OFICIAL DEL ESTADO Nm. 50 Jueves 27 de febrero de 2014 Sec. I. Pg. 18505  

E-print Network

adicional vigésima quinta, apartado uno, última línea, donde dice: «Subsidio de movilidad y compensación para gastos de transporte», debe decir: «Subsidio de movilidad y compensación por gastos de transporte

185

El liderazgo internacional  

E-print Network

Unión Europea (UE) han fijado como objetivo específico de movilidad estudiantil que para 2020 uno de", con el fin de incrementar la movilidad de los estudiantes y alcanzar los objetivos con- cretos en 2020 movilidad Erasmus (473) y Munde (172). Finalmente, los cursos de Idioma cuentan con 58 alumnos y otros 14

Rey Juan Carlos, Universidad

186

A PhylogeogrAPhic And PoPulAtion genetic AnAlysis of A WidesPreAd, sedentAry north AmericAn Bird  

E-print Network

: the hAiry WoodPecker (Picoides Villosus) Resumen.--El carpintero Picoides villosus presenta uno de los Woodpecker (Picoides villosus) has one of the broadest breeding distributions of any North American bird de distribución de P. villosus para abordar esta pregunta y para explorar la historia evolutiva de la

Winker, Kevin

187

HERBERT A. SIMON Y LA ECONOMÍA ORGANIZACIONAL  

Microsoft Academic Search

Este artículo analiza los aspectos centrales de la obra de Herbert A. Simon, en especial el orientado al análisis de la economía de las organizaciones con énfasis en el criterio de racionalidad limitada. Se interpreta la crítica de Simon a la versión ortodoxa de la burocracia organizacional y se extiende su análisis hacia la economía institucional. Uno de los principales

Fernando Estrada Gallego

2007-01-01

188

El análisis de las interacciones grupales: las aplicaciones SOCIOS  

Microsoft Academic Search

El concepto de ‘interacción’ representa uno de los núcleos fundamentales de la Psicología Social. En los grupos y las organizaciones, esto significa focalizar las explicaciones de los fenómenos en el sistema de relaciones de “influenciarecíproca” que se establece entre sus componentes. El análisis de las matrices de interacción requiere la utilización de algoritmos específicos de tratamiento de la información, no

José Manuel Cornejo Álvarez

2006-01-01

189

Disposal: Science and Theory Disposal: Science and Theory  

E-print Network

Disposal: Science and Theory #12;Disposal: Science and Theory · Se ubica el carretón con el enfriamiento Ventiladores de túnel de viento #12;Disposal: Science and Theory · Se estaciona el remolque en uno: Science and Theory · Se usa un equipo de dos personas para hacer funcionar el sistema: ­ Operario del

Benson, Eric R.

190

REFLEXIONES ÉTICAS A PARTIR DEL PROYECTO UNASUR  

Microsoft Academic Search

Este artículo pretende identificar los principios éticos del proyecto UNASUR tomando como punto de partida el discurso pronunciado por Luiz Inácio Lula da Silva en mayo del 2008 en Brasilia y entrevistas realizadas por representantes de Prensa Latina. Se analiza este documento por ser Lula uno de los fundadores del proyecto de La Unión de Naciones Suramericanas (UNASUR), demostrando la

Cintia Beatriz Pérez Lanza; Ana Maria Infante Aguilar

2011-01-01

191

Surgimiento de nuevas actividades de exportación en América Latina: el caso de Chile  

Microsoft Academic Search

En este trabajo se pasa revista al crecimiento de las exportaciones en general en Chile y se concentra la atención en tres casos específicos de surgimiento de actividades de exportación exitosas en ese país: vino, puerco y arándanos. En cada uno de esos casos específicos se trata cómo empresas, asociaciones y gobiernos a varios niveles han manejado crisis de mercado

Manuel Agosin; Claudio Bravo-Ortega

2009-01-01

192

Festividad de Santo Toms de Aquino Alicante, 28 de enero de 2004  

E-print Network

humanismo y la humanidad, y con un reto a la vez primario y necesario: la erradicación del hambre en el al intrusismo profesional en la ciencias de la salud, refleja un profundo humanismo y una generosidad ejemplar. Humanismo y generosidad del doctor Bengoa que, con el compromiso que ha adquirido hace unos

Escolano, Francisco

193

201320132013 Undergraduate Research,  

E-print Network

201320132013 Undergraduate Research, Scholarship, & Creativity Showcase March 1, 2013 Earl K. Long of Chemistry Pierre Champagne #12;Undergraduate Research Program Mission: To improve undergraduate student Programs has created UNO's Undergraduate Research Program. The goals of this program are: 1) to introduce

Kulp, Mark

194

Planning the Annual 4-H Program (Spanish)  

E-print Network

especiales tales como fiestas, bailes o meriendas campestres (picnics). 5. Por lo menos un proyecto de servicio comunitario o una actividad para aprender a servir. 6. Dos o tres proyectos que duren por lo menos 12 meses cada uno. 7. Una actividad para...

Howard, Jeff W.

2005-05-10

195

COMUNICATO STAMPA Presentazione Guida all'Ateneo 2014/2015 (italiano e inglese)  

E-print Network

COMUNICATO STAMPA Presentazione Guida all'Ateneo 2014/2015 (italiano e inglese) Venerdì 10 ottobre presentazione della Guida all'Ateneo in italiano e in inglese. Alla conferenza stampa interverranno il Rettore Normando. La Guida all'Ateneo, redatta in italiano e in inglese, costituisce uno strumento di comunicazione

Costagliola, Gennaro

196

Giovanni Depau Osservazioni sul code-switching Italiano-dialetto nell'area urbana di  

E-print Network

Giovanni Depau Osservazioni sul code-switching Italiano-dialetto nell'area urbana di Cagliari 1 sono ancora vitali al fianco dell'italiano secondo fattori sociali e situazionali. Il nostro studio si di varietà sarde») sul piano strutturale gode di uno status autonomo rispetto all'italiano, è anche

Boyer, Edmond

197

Revised 2011 Earl K. Long Library  

E-print Network

Department also participates in the Gerontology program and the Women's Studies program. In addition Emphasis is placed on the areas of North America, Europe, Latin America, Africa, and Asia. Treatment issues and the sociology of women can be found in the UNO Women's Center, located on the second floor

Li, X. Rong

198

APPROVAZIONE ATTI BANDO 6/2013 Affissione 10/07/2013  

E-print Network

: - Dott.ssa Igina Maria Breccia punti 85/100 Art. 3 Per effetto di quanto sopra disposto dall'art. 2 si procederà al conferimento di 1 (uno) Contratto di prestazione occasionale alla dott.ssa Igina Maria Breccia

Guidoni, Leonardo

199

Contribution Delalande et transitions sur le marché du travail  

Microsoft Academic Search

[spa] Contribución Delalande y transiciones en el mercado laboral . . Instaurada en 1987, la contribución Delalande es una tasa que trata de evitar que las empresas despidan a los trabajadores de más de 50 años. Semejante dispositivo puede con todo tener unos efectos perversos. Este puede en particular hacer que las empresas dejen de contratar a trabajadores viejos para

Béatrice Sédillot; Bruno Crépon; Luc Behaghel

2004-01-01

200

2006 The Society for the Study of Evolution. All rights reserved. Evolution, 60(7), 2006, pp. 14171426  

E-print Network

, Louisiana 70148 E-mail: sgjohnso@uno.edu Abstract. Asexual reproduction is thought to doom organisms of asexual lineages represents a long- standing paradox because of the putative reproductive ad- vantages. Based on coalescence times under different demographic assumptions, asexual lineages are short lived

Johnson, Steven G.

201

insURGEnCiA Y REPREsiÓn. ACERCA DE LA TEORÍA DE LOs DOs DEMOniOs  

Microsoft Academic Search

Resumen: La conocida en Argentina como Teoría o tesis de los dos demonios se ha utilizado para, si no justificar, sí al menos querer dar una explica - ción simplista al advenimiento del golpe del gene- ral Videla y la consiguiente dictadura conocida en Argentina como el Proceso. El artículo analiza los discursos e imágenes sobre cada uno de los

José Manuel Barrio Terol

202

Teoría de cuerdas económicas  

Microsoft Academic Search

He tratado varios días de escribir este texto, pero tal vez, por tratar de cuerdas, se me enreda la madeja con cosas complejas, espero poder hoy escribir algo sencillo. Básicamente, este texto trata de los relojes de cuerda, que admiro desde niño con toda esa maquinaria que tienen y lo precisa que es, pese a que solo tengo uno y

David Sánchez Palacios

2009-01-01

203

1. Report No. SWUTC/14/600451-00105-1  

E-print Network

Organization Name and Address University of New Orleans Department of Planning and Urban Studies 368 Milneburg and export commodities shipped by container, and the identification of specific commodities shipped. Research Associate, UNOTI Marc Howlett, Research Associate, UNOTI UNO Department of Planning and Urban

204

Julio de 2012 Predecir los brotes de dengue  

E-print Network

veranos cálidos o húmedos. Transmitido por mosquitos del tipo Aedes, el virus del dengue afecta a unosN° 410 Julio de 2012 Predecir los brotes de dengue en función del clima Scientific news Actualidad cientifica Actualité scientifique Transmitido principalmente por el mosquito Aedes aegypti, el dengue está

205

Melinda Sothern, PhD, CEP, Professor and  

E-print Network

completed her postgraduate education at UNO. She earned a Master of Education in Exercise Physiology in 1991 and a PhD in Exercise Physiology, Curriculum & Instructionin 1997. September 17, 2010 LSUHSC vascular and out including NFL Play 60 Murtuza J. Ali, MD, Associate Professor of Clinical Medicine is one of only

206

The future direction of the adult heart allocation system in the United States.  

PubMed

Ensuring equitable and fair organ allocation is a central charge of the United Network for Organ Sharing (UNOS) as the Organ Procurement and Transplantation Network (OPTN) through its contract with the Department of Health and Human Services (DHHS). The OPTN/UNOS Board initiated a reassessment of the current allocation system. This paper describes the efforts of the OPTN/UNOS Heart Subcommittee, acting on behalf of the OPTN/UNOS Thoracic Organ Transplantation Committee, to modify the current allocation system. The Subcommittee assessed the limitations of the current three-tiered system, outcomes of patients with status exceptions, emerging ventricular assist device (VAD) population, options for improved geographic sharing and status of potentially disenfranchised groups. They analyzed waiting list and posttransplant mortality rates of a contemporary cohort of patient groups at risk, in collaboration with the Scientific Registry of Transplant Recipients to develop a proposed multi-tiered allocation scheme. This proposal provides a framework for simulation modeling to project whether candidates would have better waitlist survival in the revised allocation system, and whether posttransplant survival would remain stable. The tiers are subject to change, based on further analysis by the Heart Subcommittee and will lead to the development of a more effective and equitable heart allocation system. PMID:25534445

Meyer, D M; Rogers, J G; Edwards, L B; Callahan, E R; Webber, S A; Johnson, M R; Vega, J D; Zucker, M J; Cleveland, J C

2015-01-01

207

Dust model intercomparison (DMIP) study over Asia: Overview Y. S. Chun,4  

E-print Network

Dust model intercomparison (DMIP) study over Asia: Overview I. Uno,1 Z. Wang,2 M. Chiba,3 Y. S study involving eight dust emission/transport models over Asia (DMIP) has been completed. Participating dust models utilize a variety of dust emission schemes, horizontal and vertical resolutions, numerical

208

3D structure of Asian dust transport revealed by CALIPSO lidar and a 4DVAR dust model  

E-print Network

3D structure of Asian dust transport revealed by CALIPSO lidar and a 4DVAR dust model I. Uno,1 K detailed 3D structure of Asian dust outflow from a dust source region to the northwestern Pacific ocean) data assimilation version of a dust transport model (RC4) based on the NIES Lidar network. The modeled

209

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)

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.

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

2008-12-01

210

La "conversione" delle cellule della cute che producono insulina: nuova arma contro diabete e tumore del pancreas  

E-print Network

tumore del pancreas Uno studio dell'Università degli Studi di Milano su PNAS scopre un metodo, sicuro alterarne il DNA. Straordinarie le potenzialità nella terapia del diabete e del tumore al pancreas. La i vari tipi di diabete e per il tumore del pancreas. La ricerca, finanziata da AIRC, MIUR e Regione

De Cindio, Fiorella

211

MICHELE DELLA MAESTRA. IL PESO DI CI CHE VEDIAMO di Fabrizio Migliorati  

E-print Network

11 MICHELE DELLA MAESTRA. IL PESO DI CIÃ? CHE VEDIAMO di Fabrizio Migliorati Nature morte. Di fronte'ostensione. Nature morte, Still life, opere pittoriche che mo- strano, in via esclusiva, elementi naturali colti alla morte, privo di vita ma non immortale. Uno sforzo ossimorico che porta alla sospensione di

Paris-Sud XI, Université de

212

UNIVERSIT DEGLI STUDI DI PADOVA Ufficio Stampa  

E-print Network

. Alla morte di questi, Giuseppe Lorenzoni prese il suo posto come Direttore, adoperandosi al massimo per a Padova nel 1914: nel centenario della sua morte, l'Osservatorio Astronomico di Padova ha organizzato un della Specola. Si tratta di uno spettacolo scritto appositamente per il centenario dalla morte di

Cesare, Bernardo

213

Universit degli Studi di Genova Inaugurazione anno accademico 2008-2009  

E-print Network

erano senza dubbio vittima di uno stato di morte apparente. Allo scopo di evitare questo macabro evento sul presunto cadavere affinché la diagnosi di morte fosse certa. Fra questi, ad esempio, porre davanti il termine "morte cerebrale" in occasione del trapianto di rene eseguito prelevando gli organi di un

Genova, Università degli Studi di

214

A Simulation of Coevolution Using Playing Cards  

ERIC Educational Resources Information Center

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…

Tatina, Robert

2007-01-01

215

Certificacin y diplomas 2014 TIPOS DE DIPLOMAS  

E-print Network

Certificación y diplomas 2014 TIPOS DE DIPLOMAS Se podrá optar por uno de los siguientes diplomas: DIPLOMA DE APROVECHAMIENTO DEL SECRETARIADO DE ESTUDIOS DE LA UA (con reconocimiento de HORAS). Este diploma es convalidable por CR�DITOS de libre elección curricular, LRU y ECTS, para los alumnos de la

Escolano, Francisco

216

Certificacin y diplomas 2013 TIPOS DE DIPLOMAS  

E-print Network

Certificación y diplomas 2013 TIPOS DE DIPLOMAS Se podrá optar por uno de los siguientes diplomas: DIPLOMA DE APROVECHAMIENTO DEL SECRETARIADO DE ESTUDIOS DE LA UA (con reconocimiento de HORAS). Este diploma es convalidable por CR�DITOS de libre elección curricular, LRU (titulaciones a extinguir) y ECTS

Escolano, Francisco

217

Nella magica cornice del Teatro di Documenti va in scena in anteprima nazionale La fata matematica.  

E-print Network

. Si tratta di uno spettacolo dedicato alla straordinaria figura di Ada Byron Lovelace, scritto e FOGACCI, lo spettacolo si isipira all'appassionante storia di Ada Augusta Byron. Ada nacque il 10 dicembre'acutezza di Ada, dalla rigorosa sua preparazione e sorpreso dalla sua capacità di intuire e comprendere il suo

Leonardi, Stefano

218

La programmazione sociale: ovvia ma non per questo scontata  

E-print Network

avuto un'accelerazione importante negli ultimi dieci anni.1 In Italia, uno dei vettori della programmazione locale, sviluppati in diversi settori delle politiche pubbliche degli anni Novanta (4). La riforma del welfare locale, introdotta dalla L. n. 328/2000 e dalla riforma del Titolo v della Costituzione

Boyer, Edmond

219

Physically Locating Wireless Intruders Frank Adelstein, Prasanth Alla, Rob Joyce Golden G. Richard III  

E-print Network

@cs.uno.edu Abstract Wireless networks, specifically IEEE 802.11, are inexpensive and easy to deploy, but their signals to their availability and low price. Portable device manufacturers are already providing 802.11 wireless cardsm (the typical range of an 802.11 Access Point (AP)) requires a signal strength that is easily

Richard III, Golden G.

220

Trials and Triumphs of Teaching Introduction to Native American Studies  

ERIC Educational Resources Information Center

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…

Johansen, Bruce Elliott

2003-01-01

221

Accordo con QdG Teatro Leonardo Soc. Consortile a r.l. Stagione Teatrale 2013/2014 -www.teatroleonardo.it  

E-print Network

, l'accesso al Teatro Leonardo Da Vinci per gli studenti universitari(2) con tesserino universitario e definire a cura di Teatro Leonardo da Vinci, estensibili ad uno o più accompagnatori se indicato. Per tutte dello "Studio U.r.p. "(3). (1) Storia e Informazioni su www.teatroleonardo.it Teatro Leonardo da Vinci

De Cindio, Fiorella

222

Estudio para la prevención del cáncer necesita voluntarias: El Estudio del Tamoxifeno y Raloxifeno (STAR) se realiza en Norteamérica  

Cancer.gov

El Estudio del Tamoxifeno y Raloxifeno (STAR, por sus siglas en inglés), uno de los estudios más importantes realizados para la prevención del cáncer del seno, está ahora reclutando voluntarias en más de 400 centros en los Estados Unidos, Puerto Rico y Canadá.

223

An Inquiry-Based Exercise for Demonstrating Prey Preference in Snakes  

ERIC Educational Resources Information Center

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…

Place, Aaron J.; Abramson, Charles I.

2006-01-01

224

Questions of Indigeneity and the (Re)-Emergent Ch'orti' Maya of Honduras  

E-print Network

Entre el espacio de unos an˜os, los Ch’orti’de Honduras salieron de una identidad de´bil y vergonzosa a tener unmovimiento e´tnico con miles demiembros y tan fuerte que apresuro´ el gobierno nacional. La volatilidad de tal identidades en la e...

Metz, Brent

2010-01-01

225

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

NASA Astrophysics Data System (ADS)

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 spent traveling in areas where minorities, particularly African Americans, are uncommon (southern Utah, Idaho, Wyoming, etc). Perhaps it is the thrill of feeling that they are traveling in hostile territory combined with the close living quarters and continuous interactions as a group, as well as the outstanding instruction, during the trip, that gives them the incentive to go to UNO and study geology.

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

2006-12-01

226

Artist meets computer  

NASA Astrophysics Data System (ADS)

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?

Faggin, Marzia

1997-04-01

227

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

PubMed Central

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

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

228

ESA Press Event: See Mars Express before its departure to the Red Planet  

NASA Astrophysics Data System (ADS)

There will be ten participants: four ESA astronauts (Pedro Duque, Leopold Eyharts, Paolo Nespoli and Thomas Reiter), four Japanese astronauts from NASDA (Takao Doi, Koichi Wakata, Satoshi Furukawa and Aikihido Hoshide) and two NASA astronauts (Nicole Passonno Stott and Stephanie D. Wilson). The main objective of this training session is to prepare the astronauts for the tasks they will have to perform when the Japanese experiment module (JEM) and ESA's Columbus laboratory are docked with the core of the International Space Station over the years ahead. After completing their training and certification, the astronauts will be assigned to long-duration missions to the ISS. The advanced training at the EAC will focus on the Columbus systems and the Automated Transfer Vehicle (ATV). It will consist of 24 classroom lectures on the Columbus and ATV systems and 4 on payloads, and 2 sessions in the Columbus Trainer. Instructors are being provided by Astrium for the Columbus systems and Alenia Spazio for the ATV, with ESA/EAC staff as mentors for the Columbus payloads. The astronauts are scheduled to visit Astrium in Bremen on 30 August to get acquainted with the flight unit of the Columbus laboratory module currently undergoing integration. This group of astronauts started their advanced training in April 2001 at NASA's Johnson Space Center (JSC), Houston, where they attended a first course on the US segment of the International Space Station. This was followed by training on the JEM system at NASDA's Tsukuba Space Center, Japan, in December 2001 - January 2002 and additional training at the JSC in May 2002. At the beginning of next year the group will be returning to Tsukuba for training on Japanese payloads. Hands-on sessions on Columbus Payload Training Models are scheduled for the second half of 2003, again at ESA's European Astronaut Centre. On Thursday 5 September, between 16:30 and 18:30 hrs, the astronauts and other ESA specialists will be available for interviews. Media representatives interested in meeting them are requested to complete the attached reply form and to fax it by Tuesday 3 September to Maren Stock at ESA/EAC.

2002-08-01

229

MRO/CRISM Observations of Putative Paleolakes on Mars: Evidence of Water-related Activity  

NASA Astrophysics Data System (ADS)

Putative paleolakes in Martian impact craters have been the subject of local and regional studies as valuable targets for exploration [1 and references therein] since they should provide information about the dynamics of the sedimentary processes and the climate under which they were formed. We identified 20 sites from the 222 suggested by Orofino et al. [2,3] based upon them having: well-developed, regular, and well-defined edges; no evidence of major modification due to subsequent impact; diameters >20 km; and inlet channels with a length > the crater diameter. MRO/CRISM [4] data have previously been used to identify hydrated/hydroxylated materials in other putative paleolakes on Mars [e.g. 5 and references therein]. Here we report our initial analyses of CRISM observations for 10 of the 20 putative paleolakes identified above using spectral data spanning the ~1-2.5 micrometer range, to evaluate the possible presence of mineral spectral signatures indicative of the past presence of water. Such minerals include hydrated/hydroxylated silicates, hydrous sulfates, and hydrous and/or anhydrous carbonates. Spectra from one site provide evidence for features near 1.4, 2.38 and possibly near 2 micrometers. Such features in CRISM [4] data have previously been attributed to hydrated minerals [e.g. 5,6]. These spectra are closely associated with the various morphological features within the putative paleolakes. Although the numbers are small these results suggest ~10% of the putative paleolakes observed as part of our effort exhibit spectral behavior that is consistent with aqueous activity in these locations. [1] Cabrol, N. & E. Grin (1999) Icarus, 142, 160-172 [2] Orofino, V. et al. (2004) Proceedings Planetary Science: Fifth Italian meeting, A. Blanco, E. Dotto, and V. Orofino Eds., pp. 103-108, Alenia Spazio, Gallipoli, Italy [3] Orofino, V. et al. (2009) Icarus, 200, 426-435 [4] Murchie, S. et al. (2007) J. Geophys. Res., 112, E05S03 [5] Murchie, S. et al. (2009), J. Geophys. Res., in press [6] Mustard, J.F. et al. (2008) Nature, 454, 305-309 GM and TLR acknowledge support for this research from NASA’s Mars Data Analysis Program.

Roush, T. L.; Marzo, G.; Fonti, S.; Orofino, V.; Blanco, A.

2009-12-01

230

Space Radar Image of Kennedy Space Center, Florida  

NASA Technical Reports Server (NTRS)

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 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.

1999-01-01

231

space Radar Image of Long Valley, California  

NASA Technical Reports Server (NTRS)

An area near Long Valley, California, was mapped by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar aboard the space shuttle Endeavor on April 13, 1994, during the first flight of the radar instrument, and on October 4, 1994, during the second flight of the radar instrument. The orbital configurations of the two data sets were ideal for interferometric combination -- that is overlaying the data from one image onto a second image of the same area to create an elevation map and obtain estimates of topography. Once the topography is known, any radar-induced distortions can be removed and the radar data can be geometrically projected directly onto a standard map grid for use in a geographical information system. The 50 kilometer by 50 kilometer (31 miles by 31 miles) map shown here is entirely derived from SIR-C L-band radar (horizontally transmitted and received) results. The color shown in this image is produced from the interferometrically determined elevations, while the brightness is determined by the radar backscatter. The map is in Universal Transverse Mercator (UTM) coordinates. Elevation contour lines are shown every 50 meters (164 feet). Crowley Lake is the dark feature near the south edge of the map. The Adobe Valley in the north and the Long Valley in the south are separated by the Glass Mountain Ridge, which runs through the center of the image. The height accuracy of the interferometrically derived digital elevation model is estimated to be 20 meters (66 feet) in this 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.

1994-01-01

232

Space Radar Image of Namib Desert in Southern Namib  

NASA Technical Reports Server (NTRS)

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 Spaziale Italiana (ASI), with the Deutsche Forschungsanstaltfuer Luft und Raumfahrt e.v. (DLR), he major partner in science, operations and data processing of X-SAR.

1999-01-01

233

SPace Radar Image of Fort Irwin, California  

NASA Technical Reports Server (NTRS)

This image of Fort Irwin in California's Mojave Desert compares interferometric radar signatures topography -- data that were obtained by multiple imaging of the same region to produce three-dimensional elevation maps -- as it was obtained on October 7-8, 1994 by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar aboard the space shuttle Endeavour. Data were acquired using the L-band (24 centimeter wavelength) and C-band (6 centimeter wavelength). The image covers an area about 25 kilometers by 70 kilometers (15.5 miles by 43 miles). North is to the lower right of the image. The color contours shown are proportional to the topographic elevation. With a wavelength one-fourth that of the L-band, the results from the C-band cycle through the color contours four times faster for a given elevation change. Detailed comparisons of these multiple frequency data over different terrain types will provide insights in the future into wavelength-dependent effects of penetration and scattering on the topography measurement accuracy. Fort Irwin is an ideal site for such detailed digital elevation model comparisons because a number of high precision digital models of the area already exist from conventional measurements as well as from airborne interferometric SAR data. 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.

1994-01-01

234

Space Radar Image of Hong Kong, China  

NASA Technical Reports Server (NTRS)

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 science, operations and data processing of X-SAR.

1994-01-01

235

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

NASA Technical Reports Server (NTRS)

This three-dimensional perspective view of Long Valley, California was created from data taken by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar on board the space shuttle Endeavour. This image was constructed by overlaying a color composite SIR-C radar image on a digital elevation map. The digital elevation map was produced using radar interferometry, a process by which radar data are acquired on different passes of the space shuttle. The two data passes are compared to obtain elevation information. The interferometry data were acquired on April 13,1994 and on October 3, 1994, during the first and second flights of the SIR-C/X-SAR instrument. The color composite radar image was taken in October and was produced by assigning red to the C-band (horizontally transmitted and vertically received) polarization; green to the C-band (vertically transmitted and received) polarization; and blue to the ratio of the two data sets. Blue areas in the image are smooth and yellow areas are rock outcrops with varying amounts of snow and vegetation. The view is looking north along the northeastern edge of the Long Valley caldera, a volcanic collapse feature created 750,000 years ago and the site of continued subsurface activity. Crowley Lake is the large dark feature in the foreground. 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.

1994-01-01

236

Space Radar Image of Manaus, Brazil  

NASA Technical Reports Server (NTRS)

These two images were created using data from the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR). On the left is a false-color image of Manaus, Brazil acquired April 12, 1994, onboard space shuttle Endeavour. In the center of this image is the Solimoes River just west of Manaus before it combines with the Rio Negro to form the Amazon River. The scene is around 8 by 8 kilometers (5 by 5 miles) with north toward the top. The radar image was produced in L-band where red areas correspond to high backscatter at HH polarization, while green areas exhibit high backscatter at HV polarization. Blue areas show low backscatter at VV polarization. The image on the right is a classification map showing the extent of flooding beneath the forest canopy. The classification map was developed by SIR-C/X-SAR science team members at the University of California,Santa Barbara. The map uses the L-HH, L-HV, and L-VV images to classify the radar image into six categories: Red flooded forest Green unflooded tropical rain forest Blue open water, Amazon river Yellow unflooded fields, some floating grasses Gray flooded shrubs Black floating and flooded grasses Data like these help scientists evaluate flood damage on a global scale. Floods are highly episodic and much of the area inundated is often tree-covered. 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.

1999-01-01

237

Space Radar Image of San Francisco, California  

NASA Technical Reports Server (NTRS)

This is a radar image of San Francisco, California, taken on October 3,1994. The image is about 40 kilometers by 55 kilometers (25 miles by 34 miles) with north toward the upper right. Downtown San Francisco is visible in the center of the image with the city of Oakland east (to the right) across San Francisco Bay. Also visible in the image is the Golden Gate Bridge (left center) and the Bay Bridge connecting San Francisco and Oakland. North of the Bay Bridge is Treasure Island. Alcatraz Island appears as a small dot northwest of Treasure Island. This image 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 56. The image is centered at 37 degrees north latitude, 122degrees west longitude. This single-frequency SIR-C image was obtained by the L-band (24 cm) radar channel, horizontally transmitted and received. Portions of the Pacific Ocean visible in this image appear very dark as do other smooth surfaces such as airport runways. Suburban areas, with the low-density housing and tree-lined streets that are typical of San Francisco, appear as lighter gray. Areas with high-rise buildings, such as those seen in the downtown areas, appear in very bright white, showing a higher density of housing and streets which run parallel to the radar flight track. 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), C-band (6 cm) and X-band (3cm). 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.

1994-01-01

238

Space Radar Image of Kilauea, Hawaii - interferometry 1  

NASA Technical Reports Server (NTRS)

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 Componenti Elettronici (IRECE) at the University of Naples was a partner in interferometry analysis.

1994-01-01

239

Space Radar Image of Raco Biomass Map  

NASA Technical Reports Server (NTRS)

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 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.

1999-01-01

240

North Central Thailand  

NASA Technical Reports Server (NTRS)

This radar image shows the dramatic landscape in the Phang Hoei Range of north central Thailand, about 40 kilometers (25 miles) northeast of the city of Lom Sak. The plateau, shown in green to the left of center, is the area of Phu Kradung National Park. This plateau is a remnant of a once larger plateau, another portion of which is seen along the right side of the image. The plateaus have been dissected by water erosion over thousands of years. Forest areas appear green on the image; agricultural areas and settlements appear as red and blue. North is toward the lower right. The area shown is 38 by 50 kilometers (24 by 31 miles) and is centered at 16.96 degrees north latitude, 101.67 degrees east longitude. Colors are assigned to different radar frequencies and polarizations as follows: red is L-band horizontally transmitted and horizontally received; green is L-band horizontally transmitted and vertically received; blue is C-band horizontally transmitted and vertically received. The image was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture (SIR-C/X-SAR) imaging radar on October 3, 1994, when it flew aboard the space shuttle Endeavour. SIR-C/X-SAR is a joint mission of the U.S./German and Italian space agencies.

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.

1998-01-01

241

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

NASA Technical Reports Server (NTRS)

This is a three-dimensional perspective view of Long Valley, California by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar on board the space shuttle Endeavour. This view was constructed by overlaying a color composite SIR-C image on a digital elevation map. The digital elevation map was produced using radar interferometry, a process by which radar data are acquired on different passes of the space shuttle and, which then, are compared to obtain elevation information. The data were acquired on April 13, 1994 and on October 3, 1994, during the first and second flights of the SIR-C/X-SAR radar instrument. The color composite radar image was produced by assigning red to the C-band (horizontally transmitted and vertically received) polarization; green to the C-band (vertically transmitted and received) polarization; and blue to the ratio of the two data sets. Blue areas in the image are smooth and yellow areas are rock outcrops with varying amounts of snow and vegetation. The view is looking north along the northeastern edge of the Long Valley caldera, a volcanic collapse feature created 750,000 years ago and the site of continued subsurface activity. Crowley Lake is off the image to the left. 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.

1994-01-01

242

Space Radar Image of Mammoth, California in 3-D  

NASA Technical Reports Server (NTRS)

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).

1999-01-01

243

MPLM On-Orbit Interface Dynamic Flexibility Modal Test  

NASA Technical Reports Server (NTRS)

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 performed to better characterize its behavior. The CBM mounting flange is the only remaining structure of the MPLM that no test data was available. This paper discusses the implementation of the residual flexibility modal testing technique on the CBM flange and the modal test of the forward cone panels.

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

2001-01-01

244

Space Radar Image of Colima Volcano, Jalisco, Mexico  

NASA Technical Reports Server (NTRS)

This is an image of the Colima volcano in Jalisco, Mexico, a vigorously active volcano that erupted as recently as July 1994. The eruption partially destroyed a lava dome at the summit and deposited a new layer of ash on the volcano's southern slopes. Surrounding communities face a continuing threat of ash falls and volcanic mudflows from the volcano, which has been designated one of 15 high-risk volcanoes for scientific study during the next decade. This image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on its 24th orbit on October 1, 1994. The image is centered at 19.4 degrees north latitude, 103.7 degrees west longitude. The area shown is approximately 35.7 kilometers by 37.5 kilometers (22 miles by 23 miles). This single-frequency, multi-polarized SIR-C image shows: red as L-band horizontally transmitted and received; green as L-band horizontally transmitted and vertically received; and blue as the ratio of the two channels. The summit area appears orange and the recent deposits fill the valleys along the south and southwest slopes. Observations from space are helping scientists understand the behavior of dangerous volcanoes and will be used to mitigate the effects of future eruptions on surrounding populations. 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.

1994-01-01

245

Space Radar Image Isla Isabela in 3-D  

NASA Technical Reports Server (NTRS)

This is a three-dimensional view of Isabela, one of the Galapagos Islands located off the western coast of Ecuador, South America. This view was constructed by overlaying a Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) image on a digital elevation map produced by TOPSAR, a prototype airborne interferometric radar which produces simultaneous image and elevation data. The vertical scale in this image is exaggerated by a factor of 1.87. The SIR-C/X-SAR image was taken on the 40th orbit of space shuttle Endeavour. The image is centered at about 0.5 degree south latitude and 91 degrees west longitude and covers an area of 75 by 60 kilometers (47 by 37 miles). The radar incidence angle at the center of the image is about 20 degrees. The western Galapagos Islands, which lie about 1,200 kilometers (750 miles)west of Ecuador in the eastern Pacific, have six active volcanoes similar to the volcanoes found in Hawaii and reflect the volcanic processes that occur where the ocean floor is created. Since the time of Charles Darwin's visit to the area in 1835, there have been more than 60 recorded eruptions on these volcanoes. This SIR-C/X-SAR image of Alcedo and Sierra Negra volcanoes shows the rougher lava flows as bright features, while ash deposits and smooth pahoehoe lava flows appear dark. Vertical exaggeration of relief is a common tool scientists use to detect relationships between structure (for example, faults, and fractures) and topography. 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).

1999-01-01

246

Radar Image of Galapagos Island  

NASA Technical Reports Server (NTRS)

This is an image showing part of Isla Isabella in the western Galapagos Islands. It was taken by the L-band radar in HH polarization from the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar on the 40th orbit of the space shuttle Endeavour. The image is centered at about 0.5 degree south latitude and 91 degrees west longitude and covers an area of 75 by 60 kilometers (47 by 37 miles). The radar incidence angle at the center of the image is about 20 degrees.

The western Galapagos Islands, which lie about 1,200 kilometers (750 miles) west of Ecuador in the eastern Pacific, have six active volcanoes similar to the volcanoes found in Hawaii. Since the time of Charles Darwin's visit to the area in 1835, there have been over 60 recorded eruptions of these volcanoes. This SIR-C/X-SAR image of Alcedo and Sierra Negra volcanoes shows the rougher lava flows as bright features, while ash deposits and smooth pahoehoe lava flows appear dark. A small portion of Isla Fernandina is visible in the extreme upper left corner of the image.

The Galapagos Islands are one of the SIR-C/X-SAR supersites and data of this area will be taken several times during the flight to allow scientists to conduct topographic change studies and to search for different lava flow types, ash deposits and fault lines.

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).

1994-01-01

247

Space Radar Image of Raco Vegetation Map  

NASA Technical Reports Server (NTRS)

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 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.

1999-01-01

248

IDIS Small Bodies and Dust Node  

NASA Astrophysics Data System (ADS)

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 Node aims at becoming a focus point in the fields of Solar System's minor bodies and interplanetary dust by providing the community with a central, user friendly resource and service inventory and contact point. The main aim of the Small Bodies and Dust Node will be to: • support collaborative work in the field of Small Bodies and Dust • provide information about databases and scientific tools in this field • establish a scientific information management system • define and develop Science Cases regarding IDIS

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

2009-04-01

249

Color Image of Death Valley, California from SIR-C  

NASA Technical Reports Server (NTRS)

This radar image shows the area of Death Valley, California and the different surface types in the area. Radar is sensitive to surface roughness with rough areas showing up brighter than smooth areas, which appear dark. This is seen in the contrast between the bright mountains that surround the dark, smooth basins and valleys of Death Valley. The image shows Furnace Creek alluvial fan (green crescent feature) at the far right, and the sand dunes near Stove Pipe Wells at the center. Alluvial fans are gravel deposits that wash down from the mountains over time. Several other alluvial fans (semicircular features) can be seen along the mountain fronts in this image. The dark wrench-shaped feature between Furnace Creek fan and the dunes is a smooth flood-plain which encloses Cottonball Basin. Elevations in the valley range from 70 meters (230 feet) below sea level, the lowest in the United States, to more than 3,300 meters (10,800 feet) above sea level. Scientists are using these radar data to help answer a number of different questions about Earth's geology including how alluvial fans form and change through time in response to climatic changes and earthquakes. The image is centered at 36.629 degrees north latitude, 117.069 degrees west longitude. Colors in the image represent different radar channels as follows: red =L-band horizontally polarized transmitted, horizontally polarized received (LHH); green =L-band horizontally transmitted, vertically received (LHV) and blue = CHV.

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).

1999-01-01

250

Fighting Infection by Clonal Selection  

NSDL National Science Digital Library

Etsuko Uno and colleagues at the Walter and Eliza Hall Institute of Medical Research in Melbourne, Australia, explain Burnet's clonal selection theory in an animation of the body's response to Streptococcus pyogenes, the bacterium that causes strep throat. Proteins from the invader enter the lymph node and grab the attention of one of billions of B cells. That B cell then clones itself thousands of times and sends antibodies via the bloodstream to the infection site. There, the antibodies bind to the strep bacteria, acting as a red flag that alerts other immune system cells to destroy the infectious agent. "We hope that the animation will pique people's interest in how the immune system works and that they will appreciate the impact of Burnet's clonal selection theory on our understanding of the immune system," Uno says.

Etsuko Uno (Walter and Eliza Hall Institute of Medical Research;); Drew Berry (Walter and Eliza Hall Institute of Medical Research;)

2008-09-26

251

Young Investigator Perspectives. Teaching and the postdoctoral experience: impact on transition to faculty positions.  

PubMed

This editorial continues with our Young Investigator Perspectives series. Drs. Uno and Walton are young investigators who hold faculty positions. They completed a K12 postdoctoral program through the IRACDA (Individual Research and Career Development Award) program sponsored through the NIGMS institute at NIH. IRACDA programs exist at multiple institutions in the USA to combine postdoctoral training with formal training in academic skills and teaching at partner institutions. I thank Drs. Walton and Uno for a thoughtful perspective on how this experience shaped their career goals to combine teaching and research and inspire undergraduates to science careers. Given the current national dialog on broadening career paths and outcomes for PhD scientists, this is a timely perspective. -P. Kay Lund. PMID:24650550

Uno, Jennifer; Walton, Kristen L W

2014-05-01

252

Megaton Water Cerenkov Detectors and Astrophysical Neutrinos  

E-print Network

Although formal proposals have not yet been made, the UNO and Hyper-Kamiokande projects are being developed to follow-up the tremendously successful program at Super-Kamiokande using a detector that is 20-50 times larger. The potential of such a detector to continue the study of astrophysical neutrinos is considered and contrasted with the program for cubic kilometer neutrino observatories.

Maury Goodman

2005-01-21

253

Fármacos dirigidos activos contra el cáncer de seno HER-2 positivo: preguntas y respuestas  

Cancer.gov

ALTTO fue un estudio clínico diseñado para determinar si la combinación del anticuerpo monoclonal trastuzumab (Herceptina) y el fármaco lapatinib (Tykerb) era más eficaz para el tratamiento del cáncer de seno HER2/ErbB2 positivo al combinarse con quimioterapia que el tratamiento con uno solo de los fármacos. Los resultados del estudio no indicaron que existan ventajas al combinar trastuzumab y lapatinib frente al tratamiento solo con trastuzumab.

254

FUNDAMENTACIN El pdel es un deporte de cooperacin-oposicin, caracterizado por la presencia de  

E-print Network

PÁDEL FUNDAMENTACI�N El pádel es un deporte de cooperación-oposición, caracterizado por la unos adversarios que, teniendo los mismos recursos, persiguen el fin opuesto. Es un deporte que requiere de una gran técnica y estado físico y es un deporte sumamente joven practicado desde los años

Escolano, Francisco

255

ULTIMO CONCERTO STAGIONE SINFONICA 2010/2011 gioved 30 Giugno 2011 ore 21.00  

E-print Network

'Estate in sol minore Concerto n. 3 L'Autunno in fa maggiore - Concerto n. 4 L'Inverno in fa minore A. PIAZZOLLA, alchimia perfetta di stati d'animo e forze della natura. Le Quattro Stagioni (Porteñe) di Piazzolla. Con le sue Quattro Stagioni (1960-1975), Piazzolla ha disegnato uno dei più alti modelli d'incontro fra tango

De Cindio, Fiorella

256

Hey, I'm Harshan Ramakrishna, currently a Sophomore, majoring in Mechanical Engineering. I am the resident assistant for the Honors  

E-print Network

cultures. I've been to a number of different places, but I would love to travel even more, in the future. In my free time I like to watch netflix, movies and TV shows. I am also a huge sports fan; I watch to talk to, or to just hang out, don't hesitate to knock on my door. Living in the dorms at UNO is a great

Kulp, Mark

257

Entre el ser y el parecer: La dualidad de los personajes dramáticos en Saverio el cruel  

E-print Network

LATIN AMERICAN THEATRE REVIEW Saverio Piano real SER - "derrotado" - "infeliz" - "expresión de perro que busca simpatía" - tímido - "indeciso" - "antimilitarista" - "ángel" mal vestido "Saverio el mantequero" relación de inversión Coronel... no distingue entre un nivel y otro y que lleva finalmente a una delimitación confusa de cada uno de ellos, creándose una nueva categoría espacial en la cual se funden la cordura y la locura, el espacio de la ambivalencia. Esta caracterización de los...

Sanhueza, Ma. Teresa

2001-10-01

258

A S O C I A C I N A S O C I A C I N A S O C I A C I N A S O C I A C I N ACTUANDO A TRAVS  

E-print Network

la realización de 350 programas en América Latina, el Mediterráneo, Asia, África y Madagascar. El eje Índico La firma de nuevos acuerdos-marco en Benìn, Camerún, el Congo y Madagascar, constituye uno de los como en Madagascar. En Níger, el proyecto AMMA relacionado con el monzón africano dio lugar a un

259

El acelerado incremento en las ltimas dcadas de impactos ambientales negati-vos como la destruccin y fragmentacin de ambientes naturales, la contamina-  

E-print Network

volumen; Trejo, este volumen). La selva seca es considerada uno de los ecosiste- mas tropicales más en la Península de Yucatán (Ceballos, 1995; García, 2006; Miles et al., 2006; Trejo, este volumen (García, 2006; Trejo-Vázquez y Dirzo, 2000). En las tierras bajas del Pacifico las selvas en

Nacional Autónoma de México, Universidad

260

Histamine Release From the Hypothalamus Induced by Gravity Change in Rats and Space Motion Sickness  

Microsoft Academic Search

Uno, A., N. Takeda, A. Horii, M. Morita, Y. Yamamoto, A. Yamatodani and T. Kubo. Histamine release from the hypothalamus induced by gravity change in rats and space motion sickness. Physiol Behav 61(6) 883–887, 1997.—Freely moving rats were exposed to 2 g hypergravity in an animal centrifuge device to produce motion sickness. Histamine release from the anterior hypothalamus of the

Atsuhiko Uno; Noriaki Takeda; Arata Horii; Masahiro Morita; Yumiko Yamamoto; Atsushi Yamatodani; Takeshi Kubo

1997-01-01

261

XI Festival Iberoamericano de Teatro de Cádiz  

E-print Network

sala a muchos espectadores, aunque pareciera interesante a alguno, y, en general, dio la impresión de inacabamiento. Barco Ebrio surge en Cali en 1994, fundado por Hoover Delgado, Henry Castillo, Erik Aguilar, María Fernanda Agudelo, Beatriz... comentarios que oí se destacaba su fuerza plástica; no en vano Diego Pombo es uno de los grandes pintores colombianos. Esta misma historia sobre la relatividad de la verdad fue puesta en escena en FALL 1997 145 Cádiz durante el Festival de 1988, por la...

Reverte Bernal, Concepció n

1997-10-01

262

La rivalità fra Lo Surdo e Fermi  

Microsoft Academic Search

\\u000a Nella vulgata della scuola di fisica romana degli anni Trenta Antonino Lo Surdo viene presentato come un professore antiquato,\\u000a ostile a Fermi e ad alcuni suoi giovani collaboratori, di carattere freddo e invidioso. Questi giudizi negativi si basano\\u000a sulle testimonianze scritte di Emilio Segrè, uno dei più brillanti allievi e collaboratori di Enrico Fermi, premio Nobel per\\u000a la Fisica nel

Franco Foresta Martin; Geppi Calcara

263

IX Festival Internacional de Teatro (Manizales, 1987)  

E-print Network

un travesti, repre sentada de manera acertada por el actor y bailarín Fernando Zapata, que logra llegar, pero desafortunadamente el teatro se malogró por la falta de claridad conceptual del escritor-director que al hacer una importante denuncia... en la plaza de Bolívar ante unos veinte mil espectadores, se dio inicio al encuentro teatral más importante de Latinoamérica. En la noche, sede del Teatro de los Fundadores, se hicieron los ritos protocolarios de apertura con discursos del Presi...

Dí az B., Né stor Gustavo

1988-04-01

264

Universit`a degli Studi di Firenze Luogo delle Radici  

E-print Network

) + k m i=1 (s - zi) dove k `e il parametro libero. Definizione: il "Luogo delle Radici" `e il luogo Condizioni di appartenenza a L s L k R : n i=1 (s - pi) = -k m i=1 (s - zi) s C appartiene ad L se sono;Fondamenti di Automatica 1 Luogo delle radici (Evans 1948) · Il luogo delle radici `e uno strumento grafico

Chisci, Luigi

265

La función de la intermediaria en Yo también hablo de la rosa  

E-print Network

, dentro del cual uno se define sólo a través de estímulos internos. Su simulacro en el drama se encuentra en la posición del profesor de psicología, el cual cree que se puede descubrir la secreta razón de los impulsos del hombre dentro del individuo.... corazón —» lo interno —» razón-psicología —> pétalo de la rosa 2. aire -» lo externo —> razón-comunismo —> rosa 3. sabiduría —> lo metafísico —> intuición-vitalismo —» tejido del pétalo Además de su importancia temática, la primera escena de la...

Kerr, R. A.

1978-10-01

266

Estimado/a Isabel Abril Snchez: En primer lugar, queremos agradecerle la participacin en la decimoquinta edicin de Ciencia  

E-print Network

decimoquinta edición de Ciencia en Acción, en la modalidad "Física en la Sociedad". El jurado ha evaluado el trabajo presentado por usted titulado "El Patio de la Ciencia" y ha sido seleccionado como uno de los, verdaderos protagonistas del concurso, Ciencia en Acción se consolida y aumenta su prestigio año tras año. Si

Escolano, Francisco

267

La función de la imaginación en las Coronas de Rodolfo Usigli  

E-print Network

SPRING 1977 37 La función de la imaginación en las Coronas de Rodolfo Usigli ROBERTO R. RODRÍGUEZ El teatro no es historia. Una pieza histórica, si es buena, puede ser una lección de historia. Rodolfo Usigli La perspectiva de Usigli en la... presentado. De esta manera cada uno se convierte en un observador que analiza los hechos acontecidos como cualquier historiador. El uso del milagro, desde el punto de vista técnico, se emplea como el 44 LATIN AMERICAN THEATRE REVIEW elemento unificador de...

Rodriguez, Roberto R.

1977-04-01

268

Impact of segmental grafts on pediatric liver transplantation—A review of the United Network for Organ Sharing Scientific registry data (1990–1996)  

Microsoft Academic Search

Purpose: The aim of this study was to assess the relative impact of segmental grafts from cadaveric and living donors on outcomes in 3,409 pediatric transplants (< 18 years) between 1990 and 1996.Methods: Analysis of the United Network for Organ Sharing (UNOS) Scientific registry data from 1990 to 1996 was performed.Results: Liver grafts consisted of 2,636 whole grafts (WLG), 246

Rakesh Sindhi; John Rosendale; Dale Mundy; Sarah Taranto; Prabhaker Baliga; Adrian Reuben; P. R Rajagopalan; Andre Hebra; Edward Tagge; H. Biemann Othersen

1999-01-01

269

Les trajets domicile-travail en île-de-France. Contrastes entre catégories socioprofessionnelles  

Microsoft Academic Search

[spa] Los viajes casa-lugar de trabajo en la region Ile-de-France . Contrastes entre categorfas socioprofesionales . En la region Ile-de-France, los viajes casa-lugar de trabajo varfan con creces segûn las profesiones : desde un promedio de 5 kms para los artesanos-comerciantes y personales de servicio, hasta unos 9 kms para los ejecutivos, las profesiones intermediarias, los empleados y los obreros.

Brigitte Baccaïni

1996-01-01

270

Frutos: Discurso de lo imaginario  

E-print Network

FALL 1994 115 Frutos: discurso de lo imaginario Juanamaría Cordones-Cook Vital creador en busca de expresiones y vivencias profundas y removedoras, Carlos Maggi (Montevideo 1922) es uno de los intelectuales uruguayos más destacados de la... cambiantes, que configuran una fluida dialéctica de identificación. Favorecidas por los elementos paralingüísticos, la iluminación, el gesto y la música, las escenas se van acumulando con efectos de desrealización fantasmal. Se produce un discurso...

Cordones-Cook, JuanaMarí a

1994-10-01

271

Hobbit  

Microsoft Academic Search

\\u000a Dopo un corso accelerato di odontoiatria presso un dentista di Adelaide, Alan Cooper e Jeremy Austin si preparavano a trapanare\\u000a lo smalto dentale di uno dei molari dell’hobbit, per ottenere un minuscolo campione di dentina da usare per l’analisi del DNA fossile. Per portare a termine la missione,\\u000a i due si erano procurati un trapano da dentista e una valigetta

Claudio Tuniz; Richard Gillespie; Cheryl Jones

272

Sobre la Universidad UMASS Amherst es el recinto principal del sistema de la Universidad  

E-print Network

Massachusetts. La universidad está ubicada en el oeste de Massa- chusetts en una de las zonas más seguras y universidad no sólo tiene uno de los mejores centros de recreación del país, también la pintoresca zona de-70 Mejores Universidades por reputación #55 Artes y Humanidades #50 Clínicos/preclínicos y Salud #51 Ciencias

Mountziaris, T. J.

273

Rediscovering the philosophical importance of Jose Ingenieros  

E-print Network

and mediocrity. Ingenieros? definition of idealism will be further explored in this thesis. 3 ?Uno de los mas grandes hombres de ciencia que ha producido el continente (Latino Americano) Jos? Ingenieros: medico, psic?logo, critico de arte, crimin?logo, farmac... sociedades humanas como condicionamiento necesario de las relaciones entre el individuo y la sociedad. 23 La autonom?a de la moral: La experiencia moral no est? condicionada por dogmas revelados ni por dogmas racionales, tendiendo a emanciparse de ellos en...

Gomez, Manuela Alejandra

2006-08-16

274

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

NASA Technical Reports Server (NTRS)

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.

Grandgenett, Neal

2000-01-01

275

High-dose chemotherapy in relapsed or refractory Hodgkin lymphoma patients: a reappraisal of prognostic factors.  

PubMed

High-dose chemotherapy (HDCT) has a consolidated role in the treatment of patients with refractory or relapsed Hodgkin lymphoma (HL). We report clinical results of 97 HL patients who underwent HDCT for refractory (62 patients) or relapsed (35 patients) diseases in Istituto Europeo di Oncologia, from 1995 to 2009. Treatment included high-dose carmustine, etoposide, cytarabine and melphalan in 84 patients and high-dose idarubicin and melphalan in 13 patients with subsequent peripheral hemopoietic stem cells transplant. Outcomes were evaluated in terms of progression-free survival (PFS) and overall survival (OS). In order to identify prognostic factors for outcome, a multivariate analysis for age, sex, disease status (refractory/relapsed), disease stage, B symptoms, presence of extranodal involvement, bulky disease, elevated lactate dehydrogenase, number of previous chemotherapy lines, remission status before transplant, 18F-fluoro-deoxy-d-glucose positron emission tomography ((18) FDG-PET) status before and after transplant was done. A clinical response was achieved in 91% of patients, with complete remissions in 76/97 patients. With a median follow-up of 45?months (range 1-164?months), 5-year PFS and OS were 64% and 71%, respectively. Remission status after induction therapy, 18F-fluoro-deoxy-d-glucose positron emission tomography status before and after transplant were the most important prognostic factors for PFS and OS in univariate or multivariate analyses. HDCT is able to induce a high remission rate and a prolonged PFS in more than 50% of the patients with refractory and relapsed HL. PMID:22473680

Cocorocchio, E; Peccatori, F; Vanazzi, A; Piperno, G; Calabrese, L; Botteri, E; Travaini, L; Preda, L; Martinelli, G

2013-03-01

276

El consumo de tabaco y la exposición al humo de tabaco en el ambiente durante el embarazo pueden poner en peligro la salud de mujeres y niños en países en desarrollo  

Cancer.gov

Las conclusiones de un estudio del NIH indican que las tasas de consumo de tabaco durante el embarazo, así como la exposición de mujeres embarazadas y de sus niños al humo de tabaco en el ambiente constituyen amenazas significativas para la salud en varios países de ingresos medios y bajos. En unos pocos de los países en donde se tomaron las muestras, incluso algunos de América Latina, los índices de exposición al humo de tabaco probablemente ya son lo suficientemente altos como para justificar una preocupación considerable.

277

Note: Circuit design for direct current and alternating current electrochemical etching of scanning probe microscopy tips  

NASA Astrophysics Data System (ADS)

We present control circuits designed for electrochemically etching, reproducibly sharp STM probes. The design uses an Arduino UNO microcontroller to allow for both ac and dc operation, as well as a comparator driven shut-off that allows for etching to be stopped in 0.5-1 ?s. The Arduino allows the instrument to be customized to suit a wide variety of potential applications without significant changes to hardware. Data is presented for coarse chemical etching of 80:20 platinum-iridium, tungsten, and nickel tips.

Jobbins, Matthew M.; Raigoza, Annette F.; Kandel, S. Alex

2012-03-01

278

[Competence in biocentric ethics.  

PubMed

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

Stepke, Fernando Lolas

2012-07-01

279

Competencias en ética biocéntrica  

PubMed Central

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

Stepke, Fernando Lolas

2013-01-01

280

NASA Nebraska Space Grant 5 Year Proposal  

NASA Technical Reports Server (NTRS)

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.

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

2004-01-01

281

Fifth Siglo de Oro Drama Festival  

E-print Network

SPRING 1980 79 Fifth Siglo de Oro Drama Festival ARTURO PEREZ and ROBERTO RODRÍGUEZ El festival de Teatro del Siglo de Oro, que en 1976 comenzó siendo un laudable esfuerzo por la difusión de la cultura hispánica, se ha convertido, en el... transcurso de unos pocos años, en el evento cultural de carácter internacional más relevante del Suroeste de los Estados Unidos. Dicho Festival, organizado por el Servicio Nacional de Parques y auspiciado por el Departamento del In terior de EE.UU., ha...

Pé rez, Arturo; Rodriguez, Roberto R.

1980-04-01

282

III Festival del Siglo de Oro (Chamizal)  

E-print Network

SPRING 1978 111 III Festival del Siglo de Oro (Chamizal) E. JARABA-PARDO El Siglo de Oro fue, por la fecundidad de los autores y por las influencias trascendentales de sus obras en el posterior desarrollo de la dramaturgia universal, uno de los... períodos más importantes en la historia del teatro. Algunos de sus rasgos esenciales fueron el uso de un lenguaje popular, satírico, e irónico, la introducción de personajes de las clases bajas, tales como esclavos y sirvientes, y la irreverencia a las...

Jaraba-Pardo, E.

1978-04-01

283

[The results of the 10-year study of efficacy and safety of Serenoa repens extract in patients at risk of progression of benign prostatic hyperplasia].  

PubMed

The article presents the results of an open, noncomparative, observational study of the efficacy and safety of continued use of the Serenoa repens (prostamol uno) plant extract at a dose of 320 mg 1 time a day for 10 years in 38 patients with early manifestations of BPH and the risk of its progression. The results of study showed the absence of progression, both on subjective criteria (IPSS, and QoL scores), and objective criteria (prostate volume, the rate of urination, residual urine volume). Furthermore, patients had no undesirable effects directly related to the use of this drug. PMID:24159762

Aliaev, Iu G; Vinarov, A Z; Demidko, Iu L; Spivak, L G

2013-01-01

284

RELACIÓN MÉDICO PACIENTE: DERECHOS DEL ADULTO MAYOR  

PubMed Central

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

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

2009-01-01

285

Stem Cell Differentiation Game  

NSDL National Science Digital Library

This game uses a modified Uno deck to review concepts related to stem cell research and diabetes. Specifically, it covers material in the "Pulse-Chase Primer," "Pancreatic Beta Cells," and "Microarrays and Stem Cells" activities from the same resource which may or may not be necessary to complete prior to this activity (depending on learner's prior knowledge). Learners accumulate points and answer questions about stem cells, development, and microarrays so that they can be the first to differentiate into a pancreatic beta (?) cell. This activity is recommended for learners studying Biology at the High School (honors, IB and AP) or Undergraduate level.

Mary Colvard

2010-01-01

286

Direct current measurement of ohmic resistance of high conductivity solutions by means of polarized electrodes  

E-print Network

~ the sum of . Jhr? polaN. sation pcesnttais plus the iR drop through tbe solution in order for Qbru' s law to apply across Cbc coll. . ?luce che polarization potentials at the ehsctrodes very vdth tbe entrant level, R will also vary w5h the current level... so ~ is arrsxxgxl into a straight lira oqunicn: i(R, R ) ~ m log i '- b. coll sol S. Aa mtb. xasxxl arbitrary value E is bx. . ~ into strafffht Uno cquati%xi Ydxich lhan is rosrrsngsd ixlto G polynomLll of the fAIl& z "- mz --!:f(x)+ b. 6...

Artecona, Victor Manuel

1959-01-01

287

Estudio de exámenes selectivos de detección de cáncer en los Estados Unidos indica que las pruebas anuales para detectar cáncer de próstata no tienen un beneficio en la mortalidad por esta enfermedad  

Cancer.gov

Un nuevo e importante informe de un estudio, diseñado para proporcionar respuestas sobre la eficacia de los exámenes de detección de cáncer de próstata, fue difundido hoy por el Estudio de Exámenes Selectivos de Detección de Cáncer de Próstata, Pulmón, Colorrectal y Ovarios (Prostate, Lung, Colorectal, and Ovarian, PLCO), e indicó que los seis exámenes de detección de cáncer de próstata que se hicieron en seis años (uno cada año) dieron como resultado más diagnósticos de la enfermedad, pero no menos muertes por cáncer de próstata.

288

Roberto J. Payró y el teatro argentino de principios de siglo: Bibliografía general puesta al día  

E-print Network

): 440-65; 441-44; 454-60. . "La época de oro del teatro argentino." Davar 87 (1960): 75, 78, 82-86, 88. Uno de los artículos más influyentes sobre el teatro argentino de principios de siglo, y que ayuda a poner a las obras de Payró en una buena..., María C. Roberto J. Payró y su tiempo. Buenos Aires: Plus Ultra, 1974. Trabajo impresionista que poco de novedoso agrega a lo ya conocido. Longo, Iris E. "Sobre Pago chico." Universidad de Santa Fe 44 (1960): 241-58. López Palermo, Mariano. "£7...

Szmetan, Ricardo

2000-04-01

289

Obtaining Disaster Assistance for Small Businesses and the Self-Employed (Spanish)  

E-print Network

) brinda asistencia para negocios de todos los tama?os. Solicite asistencia en l?nea en http://www. sba.gov/disaster_recov/. Se encuentran disponibles pr?stamos con baja tasa de inter?s. El t?rmino del pr?stamo depende de la capacidad de pago de cada uno... familia o de su vida para recuperar el negocio. Solicite pr?stamos SBA u otros pr?stamos con baja tasa de inter?s. De ser posible, evite pedir pr?stamos a organizaciones que exigen como garant?a su vivienda u otros activos; considere sus opciones. El...

Brown, Pamela J.; Cavanagh, Joyce

2007-10-08

290

A Woman's Place: Nineteenth-Century Bourgeois Morality and the Spanish American Domestic Comedy  

E-print Network

retorts by inferring that her husband ignores the fact that Manuel simply wants to seduce their daughter: "El diablo mete la cola / cuando uno menos lo espera" (81). This final diabolical metaphor clearly refers to the violation of interiority—of both.... De ésas, . . . que hay en Lima, ... a millares, que ... se tragarán los pilares de la casa de más cima. (157-8) He concludes, "desde hoy . . . / he de adoptar otro plan" (161) to protect his reputation and control his wife and daughter. Doña...

Stein, Susan Isabel

1992-10-01

291

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

NASA Technical Reports Server (NTRS)

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.

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

1999-01-01

292

Facts about Raising Children (Spanish)  

E-print Network

no deben confundir. Sea razonable, explique el porqu? de sus direcciones. Sea autoritativo, no vacile o sea indeciso. Castigue en privado, evite disciplinar un ni?o a la vista de otros. Escuche Esc?cheles a sus ni?os y an?melos a declarar sus... verdaderos sentimientos. Tr?tese Bien a s? Mismo Ratos a solas son tan importantes para individuos como para parejas. Resp?tense uno al otro Insista en los buenos modales de la familia para fundar respeto. Ense?e el bien y el mal Declare sus...

Warren, Judith L.

2002-01-04

293

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

E-print Network

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.

S. Basak; A. Bazavov; C. Bernard; C. DeTar; E. Freeland; J. Foley; Steven Gottlieb; U. M. Heller; J. Komijani; J. Laiho; L. Levkova; J. Osborn; R. L. Sugar; A. Torok; D. Toussaint; R. S. Van de Water; R. Zhou; for the MILC Collaboration

2014-09-25

294

Safe Handling of Fresh Strawberries (Spanish)  

E-print Network

? Tienen ped?nculos intactos saludables y verdes Compre las fresas frecuentemente y s?lo compre las que vaya a usar en unos pocos d?as. Las fresas da?adas se descomponen r?pidamente y podr?an portar pat?genos que causan enfermedades alimenticias.... Evite las fresas que: ? Tengan un color p?lido con ?reas grandes de color blanco o verde ? Est?n suaves, da?adas, derramando jugo, secas o con hongos ? Tengan ped?nculos secos o caf?s. De ser posible, elija las fresas individualmente en lugar de...

Scott, Amanda

2008-09-05

295

Teatro para la burguesía argentina  

E-print Network

FALL 1976 105 Sexta escena: El Hijo en el camino de vuelta a la casa es brutalmente aporreado por grupo de serviles al Patrón. Queda tendido en tierra. Unos muchachos espían la golpiza. Corren a avisar al Viejo y a la Hija. Corren a asistir al... opiniones que emite el personaje desde el Cielo, San Pedro, sobre la gente de la iglesia en la tierra. Seleccionamos un trozo del diálogo en el que San Pedro reprocha al Ángel por dejarse engañar por el rico que penetra en la puerta del cielo: Ángel...

Pereira, Teresinka

1976-10-01

296

SIMULATED COAL GAS MCFC POWER PLANT SYSTEM VERIFICATION  

SciTech Connect

This is the Technical Progress Report covering June 1998. All tasks have been completed, except for those discussed on the following pages. Unocal estimated the costs of dismantling and packaging the test facility for storage and shipment. The scope of work for the contract has been modified to accommodate the dismantling and packaging of the plant. An amendment to Sub-Contract No. MCP-9-UNO between M-C Power and Unocal has been executed which includes the Scope of Work in Unocal's cost estimate.

J.A. Scroppo

1998-07-01

297

Racism and Religious Bias in Castilian Spanish Language Dictionaries  

E-print Network

. 2 a formar parte de lo que cada uno de los miembros de la sociedad puede llegar a comprender? (1992: 20). A linguistic product, resulting from an infinity of verbal acts that, through social experience, have come from the speakers themselves... of mind. Ariza Viguera notes that ?esta serie de datos encierran un mundo de ebullici?n del l?xico, son datos que est?n ah? fr?amente y que sin embargo, a trav?s de ellos podemos reinterpretar la historia de las palabras como reflejo de la sociedad...

Howard, Lauren Kelli

2011-02-22

298

Rationality, system and context: the reception of John Dewey and Jose Ortega Y Gasset  

E-print Network

of this work. INDICE PKgina ABSTRACT. AGRADECIMIENTOS. INDICE. . . . . . . . . . iv v INTRODUCCION DEWEY Y LOS ESTADOS UNIDOS. Recepci6n acadSmica La transici6n a la nueva sociedad. Recepci6n social ORTEGA Y ESPASA. La circunstancia espaBola: la... sociedad, van a hablar los dos. Tanto uno corno el otro van a formar el grupo de los votros hegelianos" que a diferencia de Marx y los comunistas, se enfocan en la importancia de la uni5n de la teoria con la prActica. En cate sentido? y corno veremos...

Guadano, Luis

1995-01-01

299

The Baroque, the grotesque, and social criticism in the Buscon and La Hora de Todos of Quevedo: El Barroco, lo grotesco, y la critica social en el Buscon y La Hora de Todos de Quevedo  

E-print Network

una reacci6n al estado decadente poliuco y social que estaba padeciendo esta sociedad para finales del siglo XVI y principios del XVIL El inter6s primordial del estilo banoco fue el de renovar la temkfica y el modo de expresi6n persiguiendo un... marco de su sociedad ya que su labor literaria es en gran medida el reflejo de dsta Un factor importante a considerar es el momento crftico en el cual 6l vivi6 ? bajo los reinados de los tres Felipes ? y en uno de los perfodos menos estables de la...

Carrero, Norma I.

1993-01-01

300

Neobarroco Y erotismo en la poesi?a de Eduardo Espina Y Ne?stor Perlongher  

E-print Network

eventos con sucesos que ocurren de manera l?gica, uno tras otro. Ejemplos de ellos se encuentran en la religi?n, la ciencia y el arte. En el posmodernismo ya no hay fe un una verdad universal que abarque todo conocimiento (xxiv). Lyotard afirma que el... credibilidad en la sociedad y la cultura contempor?nea, postindustrial y postmoderna replante?ndose as? la cuesti?n de la legitimaci?n del saber o del conocimiento. Ha ocurrido una decadencia de los relatos por un efecto del auge de t?cnicas y tecnolog?as a...

Aregullin-Valdez, Rosalinda

2011-10-21

301

Space Radar Image of Mammoth, California  

NASA Technical Reports Server (NTRS)

This image is a false-color composite of the Mammoth Mountain area in the Sierra Nevada Mountains, California. The image is centered at 37.6 degrees north latitude and 119.0 degrees west longitude. The area is approximately 11.5 kilometers by 78.3 kilometers (7.2 by 48.7 miles) in size. The image was acquired by the Spaceborne Imaging Radar-C and X-Synthetic Aperture Radar (SIR-C/X-SAR) aboard space shuttle Endeavour on its 40th orbit, April 11, 1994. The city of Mammoth Lakes is visible in the bottom right portion of the scene. 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 lakes or slopes facing away from the radar illumination. Yellow represents areas of dry, old snow as well as slopes facing directly the radar illumination. At the time of the SIR-C overflight, the sky conditions were partially cloudy, with low and cold air temperatures. Total snow depth is about 1 to 1.5 meters (3 to 5 feet). The current snow accumulation is only about 40 percent of the average for the season. The most recent snowfall in the area covered the entire area with about 30 centimeters (14 inches) of fresh dry snow. Above 3,000 meters (10,000 feet) elevation the snowpack is dry. Below that elevation, the snowpack has a layered structure. Snow hydrologists are using SIR-C/X-SAR data to determine both the quantity of water held by seasonal snowpack and the amount of snow melting. 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 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.

1999-01-01

302

Space Radar Image of Kliuchevskoi, Russia  

NASA Technical Reports Server (NTRS)

This is an X-band seasonal image of the Maly Semlyachik volcano, which is part of the Karymsky volcano group on Kamchatka peninsula, Russia. The image is centered at 54.2 degrees north latitude and 159.6 degrees east longitude. This image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on April 9, 1994, during the first flight of the radar system, and on September 30, 1994, during the second flight. The image channels have been assigned the following colors: red corresponds to data acquired on April 9; green corresponds to data acquired on September 30; and blue corresponds to the ratio between data from April 9 and September 30, 1994. Kamchatka is twice as large as England, Scotland and Wales combined and is home to approximately 470,000 residents. The region is characterized by a chain of volcanoes stretching 800 kilometers (500 miles) across the countryside. Many of the volcanoes, including the active Maly Semlyachik volcano in this image, have erupted during this century. But the most active period in creating the three characteristic craters of this volcano goes back 20,000, 12,000 and 2,000 years ago. The highest summit of the oldest crater reaches about 1,560 meters (1,650 feet). The radar images reveal the geological structures of craters and lava flows in order to improve scientists' knowledge of these sometimes vigorously active volcanoes. This seasonal composite also highlights the ecological differences that have occurred between April and October 1994. In April the whole area was snow-covered and, at the coast, an ice sheet extended approximately 5 kilometers (3 miles) into the sea. The area shown surrounding the volcano is covered by low vegetation much like scrub. Kamchatka also has extensive forests, which belong to the northern frontier of Taiga, the boreal forest ecosystem. This region plays an important role in the world's carbon cycle. Trees require 60 years to 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.

1994-01-01

303

Space Radar Image of Manaus region of Brazil  

NASA Technical Reports Server (NTRS)

These L-band images of the Manaus region of Brazil were acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour. The left image was acquired on April 12, 1994, and the middle image was acquired on October 3, 1994. The area shown is approximately 8 kilometers by 40 kilometers (5 miles by 25 miles). The two large rivers in this image, the Rio Negro (top) and the Rio Solimoes (bottom), combine at Manaus (west of the image) to form the Amazon River. The image is centered at about 3 degrees south latitude and 61 degrees west longitude. North is toward the top left of the images. The differences in brightness between the images reflect changes in the scattering of the radar channel. In this case, the changes are indicative of flooding. A flooded forest has a higher backscatter at L-band (horizontally transmitted and received) than an unflooded river. The extent of the flooding is much greater in the April image than in the October image, and corresponds to the annual, 10-meter (33-foot) rise and fall of the Amazon River. A third image at right shows the change in the April and October images and was created by determining which areas had significant decreases in the intensity of radar returns. These areas, which appear blue on the third image at right, show the dramatic decrease in the extent of flooded forest, as the level of the Amazon River falls. The flooded forest is a vital habitat for fish and floating meadows are an important source of atmospheric methane. This demonstrates the capability of SIR-C/X-SAR to study important environmental changes that are impossible to see with optical sensors over regions such as the Amazon, where frequent cloud cover and dense forest canopies obscure monitoring of floods. Field studies by boat, on foot and in low-flying aircraft by the University of California at Santa Barbara, in collaboration with Brazil's Instituto Nacional de Pesguisas 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.

1994-01-01

304

Space Radar Image of Altona, Manitoba, Canada  

NASA Technical Reports Server (NTRS)

This is an X-band seasonal image of the Altona test site in Manitoba, Canada, about 80 kilometers (50 miles) south of Winnipeg. The image is centered at approximately 49 degrees north latitude and 97.5 degrees west longitude. This image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on April 11, 1994, during the first flight of the radar system, and on October 2, 1994, during the second flight of SIR-C/X-SAR. The image channels have the following color assignments: red represents data acquired on April 11, 1994; green represents data acquired on October 2, 1994; blue represents the ratio of the two data sets. The test site is located in the Red River Basin and is characterized by rich farmland where a variety of crops are grown, including wheat, barley, canola, corn, sunflowers and sugar beets. This SIR-C/X-SAR research site is applying radar remote sensing to study the characteristics of vegetation and soil moisture. The seasonal comparison between the April and October 1994 data show the dramatic differences between surface conditions on the two dates. At the time of the April acquisition, almost all agricultural fields were bare and soil moisture levels were high. In October, however, soils were drier and while most crops had been harvested, some standing vegetation was still present. The areas which are cyan in color are dark in April and bright in October. These represent fields of standing biomass (amount of vegetation in a specified area) and the differences in brightness within these cyan fields represent differences in vegetation type. The very bright fields in October represent standing broadleaf crops such as corn, which had not yet been harvested. Other standing vegetation which has less biomass, such as hay and grain fields, are less bright. The magenta indicates bare soil surfaces which were wetter (brighter) in April than in October. The variations in brightness of 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.

1994-01-01

305

Space Radar Image of Weddell Sea Ice  

NASA Technical Reports Server (NTRS)

This is the first calibrated, multi-frequency, multi-polarization spaceborne radar image of the seasonal sea-ice cover in the Weddell Sea, Antarctica. The multi-channel data provide scientists with details about the ice pack they cannot see any other way and indicates that the large expanse of sea-ice is, in fact, comprised of many smaller rounded ice floes, shown in blue-gray. These data are particularly useful in helping scientists estimate the thickness of the ice cover which is often extremely difficult to measure with other remote sensing systems. The extent, and especially thickness, of the polar ocean's sea-ice cover together have important implications for global climate by regulating the loss of heat from the ocean to the cold polar atmosphere. The image was acquired on October 3, 1994, by the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) onboard the space shuttle Endeavour. This image is produced by overlaying three channels of radar data in the following colors: red (C-band, HH-polarization), green (L-band HV-polarization), and blue (L-band, HH-polarization). The image is oriented almost east-west with a center location of 58.2 degrees South and 21.6 degrees East. Image dimensions are 45 kilometers by 18 kilometers (28 miles by 11 miles). Most of the ice cover is composed of rounded, undeformed blue-gray floes, about 0.7 meters (2 feet) thick, which are surrounded by a jumble of red-tinged deformed ice pieces which are up to 2 meters (7 feet) thick. The winter cycle of ice growth and deformation often causes this ice cover to split apart, exposing open water or 'leads'. Ice growth within these openings is rapid due to the cold, brisk Antarctic atmosphere. Different stages of new-ice growth can be seen within the linear leads, resulting from continuous opening and closing. The blue lines within the leads are open water areas in new fractures which are roughened by wind. The bright red lines are an intermediate stage of new-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.

1994-01-01

306

Space Radar Image of Glascow, Missouri  

NASA Technical Reports Server (NTRS)

This is a false-color L-band image of an area near Glasgow, Missouri, centered at about 39.2 degrees north latitude and 92.8 degrees west longitude. The image was acquired using the L-band radar channel (horizontally transmitted and received and horizontally transmitted/vertically received) polarizations combined. The data were acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on orbit 50 on October 3,1994. The area shown is approximately 37 kilometers by 25 kilometers (23 miles by 16 miles). The radar data, coupled with pre-flood aerial photography and satellite data and post-flood topographic and field data, are being used to evaluate changes associated with levee breaks in landforms, where deposits formed during the widespread flooding in 1993 along the Missouri and Mississippi Rivers. The distinct radar scattering properties of farmland, sand fields and scoured areas will be used to inventory floodplains along the Missouri River and determine the processes by which these areas return to preflood conditions. The image shows one such levee break near Glasgow, Missouri. In the upper center of the radar image, below the bend of the river, is a region covered by several meters of sand, shown as dark regions. West (left) of the dark areas, a gap in the levee tree canopy shows the area where the levee failed. Radar data such as these can help scientists more accurately assess the potential for future flooding in this region and how that might impact surrounding communities. 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.

1994-01-01

307

Space Radar Image of Colombian Volcano  

NASA Technical Reports Server (NTRS)

This is a radar image of a little known volcano in northern Colombia. The image was acquired on orbit 80 of space shuttle Endeavour on April 14, 1994, by the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR). The volcano near the center of the image is located at 5.6 degrees north latitude, 75.0 degrees west longitude, about 100 kilometers (65 miles) southeast of Medellin, Colombia. The conspicuous dark spot is a lake at the bottom of an approximately 3-kilometer-wide (1.9-mile) volcanic collapse depression or caldera. A cone-shaped peak on the bottom left (northeast rim) of the caldera appears to have been the source for a flow of material into the caldera. This is the northern-most known volcano in South America and because of its youthful appearance, should be considered dormant rather than extinct. The volcano's existence confirms a fracture zone proposed in 1985 as the northern boundary of volcanism in the Andes. The SIR-C/X-SAR image reveals another, older caldera further south in Colombia, along another proposed fracture zone. Although relatively conspicuous, these volcanoes have escaped widespread recognition because of frequent cloud cover that hinders remote sensing imaging in visible wavelengths. Four separate volcanoes in the Northern Andes nations ofColombia and Ecuador have been active during the last 10 years, killing more than 25,000 people, including scientists who were monitoring the volcanic activity. Detection and monitoring of volcanoes from space provides a safe way to investigate volcanism. The recognition of previously unknown volcanoes is important for hazard evaluations because a number of major eruptions this century have occurred at mountains that were not previously recognized as volcanoes. 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 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.

1999-01-01

308

Space Radar Image of Raco, Michigan, ecological test site  

NASA Technical Reports Server (NTRS)

This is an X-band image of seasonal changes at the ecological test site of Raco, Michigan, located south of Whitefish Bay on Lake Superior. The image is centered at about 46 degrees north latitude and 85 degrees west longitude. This image was acquired by the X-band Synthetic Aperture Radar onboard the space shuttle Endeavour on April 10th, 1994, and on October 1, 1994. The areas shown in red correspond to the April 10th data; the areas in blue correspond to data acquired on October 1, 1994; green indicates the ratio of data acquired on April 10 and October 1, 1994. The area shown is 22.7 kilometers by 53 kilometers (14 miles by 33 miles). Lake Superior in the upper right was frozen in April and had small waves (ripples) on its surface in October. The land area contains mostly forests and, to a lesser extent, agricultural regions. In April the area was covered in wet snow. By October, there agricultural areas were covered with grass. Vegetation and soils were moist due to rainfalls three days before the data was acquired on October 1, 1994. The bright light green/yellow tones in the lower half of the image show the stronger reflections of the snow-covered agricultural fields. The pinkish color corresponds to the coniferous and deciduous forests. The green area represents red pines. These trees are smaller than the surrounding forest cover and allow more radar penetration. The area is green because the radar is sensing the surface, which undergoes great change from snow to grass and fern undergrowth between April and October. The bright green triangle in the upper half of the image is an old airstrip, while the modern airport can be seen on the bottom right side of the image. The Raco site is an important location for monitoring seasonal changes and future global change because it is situated at the ecological transition zone between the boreal forests and the northern temperate forests. This transitional zone is expected to be ecologically sensitive to anticipated 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.

1994-01-01

309

Space Radar Image of the Lost City of Ubar  

NASA Technical Reports Server (NTRS)

This is a radar image of the region around the site of the lost city of Ubar in southern Oman, on the Arabian Peninsula. The ancient city was discovered in 1992 with the aid of remote sensing data. Archeologists believe Ubar existed from about 2800 B.C. to about 300 A.D. and was a remote desert outpost where caravans were assembled for the transport of frankincense across the desert. This image was acquired on orbit 65 of space shuttle Endeavour on April 13, 1994 by the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR). The SIR-C image shown is centered at 18.4 degrees north latitude and 53.6 degrees east longitude. The image covers an area about 50 by 100 kilometers (31 miles by 62 miles). The image is constructed from three of the available SIR-C channels and displays L-band, HH (horizontal transmit and receive) data as red, C-band HH as blue, and L-band HV (horizontal transmit, vertical receive) as green. The prominent magenta colored area is a region of large sand dunes, which are bright reflectors at both L-and C-band. The prominent green areas (L-HV) are rough limestone rocks, which form a rocky desert floor. A major wadi, or dry stream bed, runs across the middle of the image and is shown largely in white due to strong radar scattering in all channels displayed (L and C HH, L-HV). The actual site of the fortress of the lost city of Ubar, currently under excavation, is near the Wadi close to the center of the image. The fortress is too small to be detected in this image. However, tracks leading to the site, and surrounding tracks, appear as prominent, but diffuse, reddish streaks. These tracks have been used in modern times, but field investigations show many of these tracks were in use in ancient times as well. Mapping of these tracks on regional remote sensing images was a key to recognizing the site as Ubar in 1992. This image, and ongoing field investigations, will help shed light on a little known early civilization. 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.

1999-01-01

310

Space Radar Image of Manaus, Brazil  

NASA Technical Reports Server (NTRS)

These two false-color images of the Manaus region of Brazil in South America were acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar on board the space shuttle Endeavour. The image at left was acquired on April 12, 1994, and the image at right was acquired on October 3, 1994. The area shown is approximately 8 kilometers by 40 kilometers (5 miles by 25 miles). The two large rivers in this image, the Rio Negro (at top) and the Rio Solimoes (at bottom), combine at Manaus (west of the image) to form the Amazon River. The image is centered at about 3 degrees south latitude and 61 degrees west longitude. North is toward the top left of the images. The false colors were created by displaying three L-band polarization channels: red areas correspond to high backscatter, horizontally transmitted and received, while green areas correspond to high backscatter, horizontally transmitted and vertically received. Blue areas show low returns at vertical transmit/receive polarization; hence the bright blue colors of the smooth river surfaces can be seen. Using this color 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 or floating meadows. The extent of the flooding is much greater in the April image than in the October image and appears to follow the 10-meter (33-foot) annual rise and fall of the Amazon River. The flooded forest is a vital habitat for fish, and floating meadows are an important source of atmospheric methane. These images demonstrate the capability of SIR-C/X-SAR to study important environmental changes that are impossible to see with optical sensors over regions such as the Amazon, where frequent cloud cover and dense forest canopies block monitoring of flooding. Field studies by boat, on foot and in low-flying aircraft by the University of California at Santa Barbara, in collaboration with Brazil's Instituto Nacional de Pesguisas 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.

1994-01-01

311

Space Radar Image of Kilauea Volcano, Hawaii  

NASA Technical Reports Server (NTRS)

This is a deformation map of the south flank of Kilauea volcano on the big island of Hawaii, centered at 19.5 degrees north latitude and 155.25 degrees west longitude. The map was created by combining interferometric radar data -- that is data acquired on different passes of the space shuttle which are then overlayed to obtain elevation information -- acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar during its first flight in April 1994 and its second flight in October 1994. The area shown is approximately 40 kilometers by 80 kilometers (25 miles by 50 miles). North is toward the upper left of the image. The colors indicate the displacement of the surface in the direction that the radar instrument was pointed (toward the right of the image) in the six months between images. The analysis of ground movement is preliminary, but appears consistent with the motions detected by the Global Positioning System ground receivers that have been used over the past five years. The south flank of the Kilauea volcano is among the most rapidly deforming terrains on Earth. Several regions show motions over the six-month time period. Most obvious is at the base of Hilina Pali, where 10 centimeters (4 inches) or more of crustal deformation can be seen in a concentrated area near the coastline. On a more localized scale, the currently active Pu'u O'o summit also shows about 10 centimeters (4 inches) of change near the vent area. Finally, there are indications of additional movement along the upper southwest rift zone, just below the Kilauea caldera in the image. Deformation of the south flank is believed to be the result of movements along faults deep beneath the surface of the volcano, as well as injections of magma, or molten rock, into the volcano's 'plumbing' system. Detection of ground motions from space has proven to be a unique capability of imaging radar technology. Scientists hope to use deformation data acquired by SIR-C/X-SAR and future imaging 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.

1994-01-01

312

Space Radar Image of Los Angeles, California  

NASA Technical Reports Server (NTRS)

This is a radar image of Los Angeles, California, taken on October 2, 1994. Visible in the image are Long Beach Harbor at the bottom right (south corner of the image), Los Angeles International Airport at the bottom center, with Santa Monica just to the left of it and the Hollywood Hills to the left of Santa Monica. Also visible in the image are the freeway systems of Los Angeles, which appear as dark lines. The San Gabriel Mountains (center top) and the communities of San Fernando Valley, Simi Valley and Palmdale can be seen on the left-hand side. This image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on its 24th orbit. The image is centered at 34 degrees north latitude, 118 degrees west longitude. The area shown is approximately 100 kilometers by 52 kilometers (62 miles by 32 miles). This single-frequency SIR-C image was obtained by the L-band (24 cm) radar channel, horizontally transmitted and received. Portions of the Pacific Ocean visible in this image appear very dark as do freeways and other flat surfaces such as the airport runways. Mountains in the image are dark grey, with brighter patches on the mountain slopes, which face in the direction of the radar illumination (from the top of the image). Suburban areas, with the low-density housing and tree-lined streets that are typical of Los Angeles, appear as lighter grey. Areas with high-rise buildings, such as downtown Los Angeles, appear in very bright white, showing a higher density of housing and streets which run parallel to the radar flight track. Scientists hope to use radar image data from SIR-C/X-SAR to map fire scars in areas prone to brush fires, such as Los Angeles. In this image, the Altadena fire area is visible in the top center of the image as a patch of mountainous terrain which is slightly darker than the nearby mountains. Using all the radar frequency and polarization images provided by SIR-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.

1994-01-01

313

Space Radar Image of Oberpfaffenhofen, Germany  

NASA Technical Reports Server (NTRS)

This is a false-color, three-frequency image of the Oberpfaffenhofen supersite, southwest of Munich in southern Germany, which shows the differences in what the three radar bands can see on the ground. The image covers a 27- by 36-kilometer (17- by 22-mile) area. The center of the site is 48.09 degrees north and 11.29 degrees east. The image was acquired by the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) onboard space shuttle Endeavour on April 13, 1994, just after a heavy storm which covered the all area with 20 centimeters (8 inches) of snow. The dark area in the center of the image is Lake Ammersee. The two smaller lakes above the Ammersee are the Worthsee and the Pilsensee. On the right of the image is the tip of the Starnbergersee. The outskirt of the city of Munich can be seen at the top of the image. The Oberpfaffenhofen supersite is the major test site for X-SAR calibration and scientific experiments such as ecology, hydrology and geology. This color composite image is a three-frequency overlay. L-band total power was assigned red, the C-band total power is shown in green and the X-band VV polarization appears blue. The colors on the image stress the differences between the L-band, C-band and X-band images. If the three frequencies were seeing the same thing, the image will appear in black and white. For example, the blue areas corresponds to area for which the X-band backscatter is relatively higher than the backscatter at L-and C-band; this behavior is characteristic of clear cuts or shorter vegetation. Similarly, the forested areas have a reddish tint. Finally, the green areas seen at the southern tip of both the Ammersee and the Pilsensee lakes indicate a marshy 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 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.

1999-01-01

314

Space Radar Image of the Yucatan Impact Crater Site  

NASA Technical Reports Server (NTRS)

This is a radar image of the southwest portion of the buried Chicxulub impact crater in the Yucatan Peninsula, Mexico. The radar image was acquired on orbit 81 of space shuttle Endeavour on April 14, 1994 by the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR). The image is centered at 20 degrees north latitude and 90 degrees west longitude. Scientists believe the crater was formed by an asteroid or comet which slammed into the Earth more than 65 million years ago. It is this impact crater that has been linked to a major biological catastrophe where more than 50 percent of the Earth's species, including the dinosaurs, became extinct. The 180-to 300-kilometer-diameter (110- to 180-mile)crater is buried by 300 to 1,000 meters (1,000 to 3,000 feet) of limestone. The exact size of the crater is currently being debated by scientists. This is a total power radar image with L-band in red, C-band in green, and the difference between C-band L-band in blue. The 10-kilometer-wide (6-mile) band of yellow and pink with blue patches along the top left (northwestern side) of the image is a mangrove swamp. The blue patches are islands of tropical forests created by freshwater springs that emerge through fractures in the limestone bedrock and are most abundant in the vicinity of the buried crater rim. The fracture patterns and wetland hydrology in this region are controlled by the structure of the buried crater. Scientists are using the SIR-C/X-SAR imagery to study wetland ecology and help determine the exact size of the impact crater. 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. Research on the biological effects of the Chicxulub impact is supported by the NASA Exobiology Program.

1999-01-01

315

Safsaf Oasis, Egypt  

NASA Technical Reports Server (NTRS)

These images show two views of a region of south-central Egypt, each taken by a different type of spaceborne sensor. On the left is an optical image from the Landsat Thematic Mapper, and on the right is a radar image from the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR). This comparison shows that the visible and infrared wavelengths of Landsat are only sensitive to the materials on the surface, while the radar wavelengths of SIR-C/X-SAR can penetrate the thin sand cover in this arid region to reveal details hidden below the surface. Field studies in this area indicate that the L-band radar can penetrate as much as 2 meters (6.5 feet) of very dry sand to image buried rock structures. Ancient drainage channels, shown at the bottom of this image, are filled with sand more than 2 meters (6.5 feet) thick and therefore appear dark because the radar waves cannot penetrate them. Only the most recently active channels are visible in the Landsat scene. Some geologic structures at the surface are visible in both images. However, many buried features, such as rock fractures and the blue circular granite bodies in the upper center of the image on the right, are visible only to the radar. The Safsaf Oasis is located near the bright yellow feature in the lower left center of the Landsat image. Scientists are using the penetrating capabilities of radar imaging in desert areas to study structural geology, mineral exploration, ancient climates, water resources and archaeology. Each image is 30.8 kilometers by 25.6 kilometers (19.1 miles by 15.9 miles) and is centered at 22.7 degrees north latitude, 29.3 degrees east longitude. North is toward the upper right. In the Landsat image, the colors are assigned as follows: red is Band 7 (mid-infrared); green is Band 4 (near infrared); and blue is Band 1 (visible blue light). The colors assigned to the radar frequencies and polarizations are as follows: red is L-band, horizontally transmitted and received; green 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.

1998-01-01

316

Space Radar Image of West Texas - SAR scan  

NASA Technical Reports Server (NTRS)

This radar image of the Midland/Odessa region of West Texas, demonstrates an experimental technique, called ScanSAR, that allows scientists to rapidly image large areas of the Earth's surface. The large image covers an area 245 kilometers by 225 kilometers (152 miles by 139 miles). It was obtained by the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) flying aboard the space shuttle Endeavour on October 5, 1994. The smaller inset image is a standard SIR-C image showing a portion of the same area, 100 kilometers by 57 kilometers (62 miles by 35 miles) and was taken during the first flight of SIR-C on April 14, 1994. The bright spots on the right side of the image are the cities of Odessa (left) and Midland (right), Texas. The Pecos River runs from the top center to the bottom center of the image. Along the left side of the image are, from top to bottom, parts of the Guadalupe, Davis and Santiago Mountains. North is toward the upper right. Unlike conventional radar imaging, in which a radar continuously illuminates a single ground swath as the space shuttle passes over the terrain, a Scansar radar illuminates several adjacent ground swaths almost simultaneously, by 'scanning' the radar beam across a large area in a rapid sequence. The adjacent swaths, typically about 50 km (31 miles) wide, are then merged during ground processing to produce a single large scene. Illumination for this L-band scene is from the top of the image. The beams were scanned from the top of the scene to the bottom, as the shuttle flew from left to right. This scene was acquired in about 30 seconds. A normal SIR-C image is acquired in about 13 seconds. The ScanSAR mode will likely be used on future radar sensors to construct regional and possibly global radar images and topographic maps. The ScanSAR processor is being designed for 1996 implementation at NASA's Alaska SAR Facility, located at the University of Alaska Fairbanks, and will produce digital images from the 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.

1999-01-01

317

Space Radar Image of Mammoth Mountain, California  

NASA Technical Reports Server (NTRS)

This false-color composite radar image of the Mammoth Mountain area in the Sierra Nevada Mountains, California, was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar aboard the space shuttle Endeavour on its 67th orbit on October 3, 1994. The image is centered at 37.6 degrees north latitude and 119.0 degrees west longitude. The area is about 39 kilometers by 51 kilometers (24 miles by 31 miles). North is toward the bottom, about 45 degrees to the right. In this image, red was created using L-band (horizontally transmitted/vertically received) polarization data; green was created using C-band (horizontally transmitted/vertically received) polarization data; and blue was created using C-band (horizontally transmitted and received) polarization data. Crawley Lake appears dark at the center left of the image, just above or south of Long Valley. The Mammoth Mountain ski area is visible at the top right of the scene. The red areas correspond to forests, the dark blue areas are bare surfaces and the green areas are short vegetation, mainly brush. The purple areas at the higher elevations in the upper part of the scene are discontinuous patches of snow cover from a September 28 storm. New, very thin snow was falling before and during the second space shuttle pass. 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 Synthetic Aperture Radar processing in preparation for upcoming data-intensive SAR missions. The image released here was produced as part of this experimental effort. 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.

1994-01-01

318

Space Radar Image of Flevoland, Netherlands  

NASA Technical Reports Server (NTRS)

This is a three-frequency false color image of Flevoland, The Netherlands, centered at 52.4 degrees north latitude, 5.4 degrees east longitude. This image was acquired by the Spaceborne Imaging Radar-C and X-Band Synthetic Aperture Radar (SIR-C/X-SAR) aboard space shuttle Endeavour on April 14, 1994. It was produced by combining data from the X-band, C-band and L-band radars. The area shown is approximately 25 kilometers by 28 kilometers (15-1/2 by 17-1/2 miles). Flevoland, which fills the lower two-thirds of the image, is a very flat area that is made up of reclaimed land that is used for agriculture and forestry. At the top of the image, across the canal from Flevoland, is an older forest shown in red; the city of Harderwijk is shown in white on the shore of the canal. At this time of the year, the agricultural fields are bare soil, and they show up in this image in blue. The changes in the brightness of the blue areas are equal to the changes in roughness. The dark blue areas are water and the small dots in the canal are boats. This SIR-C/X-SAR supersite is being used for both calibration and agricultural studies. Several soil and crop ground-truth studies will be conducted during the shuttle flight. In addition, about 10calibration devices and 10 corner reflectors have been deployed to calibrate and monitor the radar signal. One of these transponders can be seen as a bright star in the lower right quadrant of the image. This false-color image was made using L-band total power in the red channel, C-band total power in the green channel, and X-band VV polarization in the blue channel. 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 Raumfahrte.v. (DLR), the major partner in science, operations and data processing of X-SAR.

1999-01-01

319

Space Radar Image of Oetzal, Austria  

NASA Technical Reports Server (NTRS)

This is a digital elevation model that was geometrically coded directly onto an X-band seasonal change image of the Oetztal supersite in Austria. The image is centered at 46.82 degrees north latitude and 10.79 degrees east longitude. This image is located in the Central Alps at the border between Switzerland, Italy and Austria, 50 kilometers (31 miles) southwest of Innsbruck. It was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture aboard the space shuttle Endeavour on April 14, 1994 and on October 5, 1994. It was produced by combining data from these two different data sets. Data obtained in April is green; data obtained in October appears in red and blue, and was used as an enhancement based on the ratio of the two data sets. Areas with a decrease in backscatter from April to October appear in light blue (cyan), such as the large Gepatschferner glacier seen at the left of the image center, and most of the other glaciers in this view. A light blue hue is also visible at the east border of the dark blue Lake Reschensee at the upper left side. This shows a significant rise in the water level. Magenta represents areas with an increase of backscatter from April 10 to October 5. Yellow indicates areas with high radar signal response during both passes, such as the mountain slopes facing the radar. Low radar backscatter signals refer to smooth surface (lakes) or radar grazing areas to radar shadow areas, seen in the southeast slopes. The area is approximately 29 kilometers by 21 kilometers (18 miles by 13.5 miles). The summit of the main peaks reaches elevations of 3,500 to 3,768 meters (xx feet to xx feet)above sea level. The test site's core area is the glacier region of Venter Valley, which is one of the most intensively studied areas for glacier research in the world. Research in Venter Valley (below center)includes studies of glacier dynamics, glacier-climate regions, snowpack conditions and glacier hydrology. About 25 percent of the core test 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.

1994-01-01

320

Space Radar Image of Taal Volcano, Philippines  

NASA Technical Reports Server (NTRS)

This is an image of Taal volcano, near Manila on the island of Luzon in the Philippines. The black area in the center is Taal Lake, which nearly fills the 30-kilometer-diameter (18-mile) caldera. The caldera rim consists of deeply eroded hills and cliffs. The large island in Taal Lake, which itself contains a crater lake, is known as Volcano Island. The bright yellow patch on the southwest side of the island marks the site of an explosion crater that formed during a deadly eruption of Taal in 1965. The image was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on its 78th orbit on October 5, 1994. The image shows an area approximately 56 kilometers by 112 kilometers (34 miles by 68 miles) that is centered at 14.0 degrees north latitude and 121.0 degrees east longitude. North is toward the upper right of the image. The colors in this image were obtained using the following radar channels: red represents the L-band (horizontally transmitted and received); green represents the L-band (horizontally transmitted and vertically received); blue represents the C-band (horizontally transmitted and vertically received). Since 1572, Taal has erupted at least 34 times. Since early 1991, the volcano has been restless, with swarms of earthquakes, new steaming areas, ground fracturing, and increases in water temperature of the lake. Volcanologists and other local authorities are carefully monitoring Taal to understand if the current activity may foretell an eruption. Taal is one of 15 'Decade Volcanoes' that have been identified by the volcanology community as presenting large potential hazards to population centers. The bright area in the upper right of the image is the densely populated city of Manila, only 50 kilometers (30 miles) north of the central crater. 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.

1994-01-01

321

Space Radar Image of Houston, Texas  

NASA Technical Reports Server (NTRS)

This image of Houston, Texas, shows the amount of detail that is possible to obtain using spaceborne radar imaging. Images such as this -- obtained by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) flying aboard the space shuttle Endeavor last fall -- can become an effective tool for urban planners who map and monitor land use patterns in urban, agricultural and wetland areas. Central Houston appears pink and white in the upper portion of the image, outlined and crisscrossed by freeways. The image was obtained on October 10, 1994, during the space shuttle's 167th orbit. The area shown is 100 kilometers by 60 kilometers (62 miles by 38 miles) and is centered at 29.38 degrees north latitude, 95.1 degrees west longitude. North is toward the upper left. The pink areas designate urban development while the green-and blue-patterned areas are agricultural fields. Black areas are bodies of water, including Galveston Bay along the right edge and the Gulf of Mexico at the bottom of the image. Interstate 45 runs from top to bottom through the image. The narrow island at the bottom of the image is Galveston Island, with the city of Galveston at its northeast (right) end. The dark cross in the upper center of the image is Hobby Airport. Ellington Air Force Base is visible below Hobby on the other side of Interstate 45. Clear Lake is the dark body of water in the middle right of the image. The green square just north of Clear Lake is Johnson Space Center, home of Mission Control and the astronaut training facilities. The black rectangle with a white center that appears to the left of the city center is the Houston Astrodome. The colors in this image were obtained using the follow radar channels: red represents the L-band (horizontally transmitted, vertically received); green represents the C-band (horizontally transmitted, vertically received); blue represents the C-band (horizontally transmitted and received). 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.

1994-01-01

322

Space Radar Image of Bebedauro, Brazil, seasonal  

NASA Technical Reports Server (NTRS)

This is an X-band image showing seasonal changes at the hydrological test site of Bebedouro in Brazil. The image is centered at 9 degrees south latitude and 40.2 degrees west longitude. This image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on April 10, 1994, during the first flight of the radar system, and on October 1, 1994, during the second mission. The swath width is approximately 16.5 kilometers (10.5 miles) wide. The image channels have the following color assignments: red represents data acquired on April 10; green represents data acquired on October 1; blue corresponds to the ratio of the two data sets. Agriculture plays an important economic and social role in Brazil. One of the major problems related to Brazilian agriculture is estimating the size of planting areas and their productivity. Due to cloud cover and the rainy season, which occurs from November through April, optical and infrared Earth observations are seldom used to survey the region. An additional goal of monitoring this region is to watch the floodplains of rivers like Rio Sao Francisco in order to determine suitable locations for additional agricultural fields. This area belongs to the semi-arid northeastern region of Brazil, where estimates have suggested that about 10 times more land could be used for agriculture, including some locations which could be used for irrigation projects. Monitoring of soil moisture during the important summer crop season is of high priority for the future development and productivity of this region. In April the area was covered with vegetation because of the moisture of the soil and only small differences could be seen in X-band data. In October the run-off channels of this hilly region stand out quite clearly because the greenish areas indicated much less soil moisture and water content in plants. 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.

1994-01-01

323

Space Radar Image of Mississippi Delta  

NASA Technical Reports Server (NTRS)

This is a radar image of the Mississippi River Delta where the river enters into the Gulf of Mexico along the coast of Louisiana. This multi-frequency image demonstrates the capability of the radar to distinguish different types of wetlands surfaces in river deltas. This image was acquired by the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on October 2, 1995. The image is centered on latitude 29.3 degrees North latitude and 89.28 degrees West longitude. The area shown is approximately 63 kilometers by 43 kilometers (39 miles by 26 miles). North is towards the upper right of the image. As the river enters the Gulf of Mexico, it loses energy and dumps its load of sediment that it has carried on its journey through the mid-continent. This pile of sediment, or mud, accumulates over the years building up the delta front. As one part of the delta becomes clogged with sediment, the delta front will migrate in search of new areas to grow. The area shown on this image is the currently active delta front of the Mississippi. The migratory nature of the delta forms natural traps for oil and the numerous bright spots along the outside of the delta are drilling platforms. Most of the land in the image consists of mud flats and marsh lands. There is little human settlement in this area due to the instability of the sediments. The main shipping channel of the Mississippi River is the broad red stripe running northwest to southeast down the left side of the image. The bright spots within the channel are ships. The colors in the image are assigned to different frequencies and polarizations of the radar as follows: red is L-band vertically transmitted, vertically received; green is C-band vertically transmitted, vertically received; blue is X-band vertically transmitted, vertically received. 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.

1999-01-01

324

Space Radar Image of Patagonian Ice Fields  

NASA Technical Reports Server (NTRS)

This pair of images illustrates the ability of multi-parameter radar imaging sensors such as the Spaceborne Imaging Radar-C/X-band Synthetic Aperture radar to detect climate-related changes on the Patagonian ice fields in the Andes Mountains of Chile and Argentina. The images show nearly the same area of the south Patagonian ice field as it was imaged during two space shuttle flights in 1994 that were conducted five-and-a-half months apart. The images, centered at 49.0 degrees south latitude and 73.5degrees west longitude, include several large outlet glaciers. The images were acquired by SIR-C/X-SAR on board the space shuttle Endeavour during April and October 1994. The top image was acquired on April 14, 1994, at 10:46 p.m. local time, while the bottom image was acquired on October 5,1994, at 10:57 p.m. local time. Both were acquired during the 77th orbit of the space shuttle. The area shown is approximately 100 kilometers by 58 kilometers (62 miles by 36 miles) with north toward the upper right. The colors in the images were obtained using the following radar channels: red represents the C-band (horizontally transmitted and received); green represents the L-band (horizontally transmitted and received); blue represents the L-band (horizontally transmitted and vertically received). The overall dark tone of the colors in the central portion of the April image indicates that the interior of the ice field is covered with thick wet snow. The outlet glaciers, consisting of rough bare ice, are the brightly colored yellow and purple lobes which terminate at calving fronts into the dark waters of lakes and fiords. During the second mission the temperatures were colder and the corresponding change in snow and ice conditions is readily apparent by comparing the images. The interior of the ice field is brighter because of increased radar return from the dryer snow. The distinct green/orange boundary on the ice field indicates an abrupt change in the structure of the snowcap, 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.

1994-01-01

325

Space Radar Image of Missouri River, Glasgow, Missouri  

NASA Technical Reports Server (NTRS)

This is a false-color L-band image of an area near Glasgow, Missouri, centered at about 39.2 degrees north latitude and 92.8 degrees west longitude. The image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on its 50th orbit on October 3, 1994. The false-color composite was made by displaying the L-band (horizontally transmitted and received) return in red; the L-band (horizontally transmitted and vertically received) return in green; and the sum of the two channels in blue. The area shown is approximately 37 kilometers by 25 kilometers (23 miles by 16 miles). The radar data, coupled with pre-flood aerial photography and satellite data and post-flood topographic and field data, are being used to evaluate changes associated with levee breaks in landforms, where deposits formed during the widespread flooding in 1993 along the Missouri and Mississippi Rivers. The distinct radar scattering properties of farmland, sand fields and scoured areas will be used to inventory floodplains along the Missouri River and determine the processes by which these areas return to preflood conditions. The image shows one such levee break near Glasgow, Missouri. In the upper center of the radar image is a region covered by several meters of sand, shown as blue regions below the bend in the river. West (left) of this dark area, a blue gap in the levee tree canopy can be seen, showing the area where the levee failed. Radar data such as these can help scientists more accurately assess the potential for future flooding in this region and how that might impact surrounding communities. 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.

1994-01-01

326

Space Radar Image of Chernobyl  

NASA Technical Reports Server (NTRS)

This is an image of the Chernobyl nuclear power plant and its surroundings, centered at 51.17 north latitude and 30.15 west longitude. The image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar aboard the space shuttle Endeavour on its 16th orbit on October 1, 1994. The area is located on the northern border of the Ukraine Republic and was produced by using the L-band (horizontally transmitted and received) polarization. The differences in the intensity are due to differences in vegetation cover, with brighter areas being indicative of more vegetation. These data were acquired as part of a collaboration between NASA and the National Space Agency of Ukraine in Remote Sensing and Earth Sciences. NASA has included several sites provided by the Ukrainian space agency as targets of opportunity during the second flight of SIR-C/X-SAR. The Ukrainian space agency also plans to conduct airborne surveys of these sites during the mission. The Chernobyl nuclear power plant is located toward the top of the image near the Pripyat River. The 12-kilometer (7.44-mile)-long cooling pond is easily distinguishable as an elongated dark shape in the center near the top of the image. The reactor complex is visible as the bright area to the extreme left of the cooling pond and the city of Chernobyl is the bright area just below the cooling pond next to the Pripyat River. The large dark area in the bottom right of the image is the Kiev Reservoir just north of Kiev. Also visible is the Dnieper River, which feeds into the Kiev Reservoir from the top of the image. The Soviet government evacuated 116,000 people within 30 kilometers (18.6 miles) of the Chernobyl reactor after the explosion and fire on April 26, 1986. 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.

1994-01-01

327

Space Radar Image of North Sea, Germany  

NASA Technical Reports Server (NTRS)

This is an X-band image of an oil slick experiment conducted in the North Sea, Germany. The image is centered at 54.58 degrees north latitude and 7.48 degrees east longitude. This image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on October 6, 1994, during the second flight of the spaceborne radar. The experiment was designed to differentiate between petroleum oil spills and natural slicks floating on the sea surface. Two types of petroleum oil and six types of oils resembling natural sea surface slicks were poured on the sea surface from ships and a helicopter just before the space shuttle flew over the region. At the bottom of the image is the Sylt peninsula, a famous holiday resort. Twenty-six gallons (100 liters) of diesel oil was dissipated due to wave action before the shuttle reached the site. The oil spill seen at the uppermost part of the image is about 105 gallons (400 liters) of heavy heating oil and the largest spill is about 58 gallons (220 liters) of oleyl alcohol, resembling a 'natural oil' like the remaining five spills used to imitate natural slicks that have occurred offshore from various states. The volume of these other oils spilled on the ocean surface during the five experimental spills varied from 16 gallons to 21 gallons (60 liters to 80 liters). The distance between neighboring spills was about half a mile (800 meters) at the most. The largest slick later thinned out to monomolecular sheets of about 10 microns, which is the dimension of a molecule. Oceanographers found that SIR-C/X-SAR was able to clearly distinguish the oil slicks from algae products dumped nearby. Preliminary indications are that various types of slicks may be distinguished, especially when other radar wavelengths are included in the analysis. Radar imaging of the world's oceans on a continuing basis may allow oceanographers in the future to detect and clean up oil spills much more 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.

1994-01-01

328

SPace Radar Image of Mt. Pinatubo, Philippines  

NASA Technical Reports Server (NTRS)

This is a false color L-band and C-band image of the area around Mount Pinatubo in the Philippines, centered at about 15 degrees north latitude, 120.5 degrees east longitude. This image 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 78 on April 13, 1994. The false-color composite is made by displaying the L-band HH return in red, the L-band HV return in green and the C-band HV return in blue. The area shown is approximately 45 by 68 kilometers (28 by 42 miles). The main volcanic crater on Mount Pinatubo produced by the June 1991 eruptions, and the steep slopes on the upper flanks of the volcano, are easily seen in this image. The red color on the high slopes show the rougher ash deposited during the 1991 eruption. The dark drainages are the smooth mudflows which continue to flood the river valleys after heavy rain. Radar images such as this one can be used to identify the areas flooded by mudflows, which are difficult to distinguish visually, and to assess the rate at which the erosion and deposition continues. A key aspect of the second SIR-C/X-SAR mission in August 1994 will be to collect a second image of Pinatubo during the summer monsoon season -- new mudflows will have occurred -- and to evaluate the short-term changes. The 1991 eruption of Mount Pinatubo in the Philippines is well known for its near-global effects on the atmosphere and climate due to the large amount of sulfur dioxide that was injected into the upper atmosphere. What is less widely known is that even today the volcano continues to be a major hazard to the people who have returned to the area around the volcano. Dangerous mudflows (called 'lahars') are often generated by heavy rains, and these can still sweep down river valleys and wash out roads and villages, or bury low lying areas in several meters of mud and volcanic debris. These mudflows will continue to be a severe hazard around Pinatubo for 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).

1999-01-01

329

Space Radar Image of Rabaul Volcano, New Guinea  

NASA Technical Reports Server (NTRS)

This is a radar image of the Rabaul volcano on the island of New Britain, Papua, New Guinea taken almost a month after its September 19, 1994, eruption that killed five people and covered the town of Rabaul and nearby villages with up to 75 centimeters (30 inches) of ash. More than 53,000 people have been displaced by the eruption. The image was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on its 173rd orbit on October 11, 1994. This image is centered at 4.2 degrees south latitude and 152.2 degrees east longitude in the southwest Pacific Ocean. The area shown is approximately 21 kilometers by 25 kilometers (13 miles by 15.5 miles). North is toward the upper right. The colors in this image were obtained using the following radar channels: red represents the L-band (horizontally transmitted and received); green represents the L-band (horizontally transmitted and vertically received); blue represents the C-band (horizontally transmitted and vertically received). Most of the Rabaul volcano is underwater and the caldera (crater) creates Blanche Bay, the semi-circular body of water that occupies most of the center of the image. Volcanic vents within the caldera are visible in the image and include Vulcan, on a peninsula on the west side of the bay, and Rabalanakaia and Tavurvur (the circular purple feature near the mouth of the bay) on the east side. Both Vulcan and Tavurvur were active during the 1994 eruption. Ash deposits appear red-orange on the image, and are most prominent on the south flanks of Vulcan and north and northwest of Tavurvur. A faint blue patch in the water in the center of the image is a large raft of floating pumice fragments that were ejected from Vulcan during the eruption and clog the inner bay. Visible on the east side of the bay are the grid-like patterns of the streets of Rabaul and an airstrip, which appears as a dark northwest-trending band at the right-center of 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.

1994-01-01

330

Space Radar Image of Kliuchevskoi Volcano, Russia  

NASA Technical Reports Server (NTRS)

This is an image of the Kliuchevskoi volcano, Kamchatka, Russia, which began to erupt on September 30, 1994. Kliuchevskoi is the bright white peak surrounded by red slopes in the lower left portion of the image. The image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar aboard the space shuttle Endeavour on its 25th orbit on October 1, 1994. The image shows an area approximately 30 kilometers by 60 kilometers (18.5 miles by 37 miles) that is centered at 56.18 degrees north latitude and 160.78 degrees east longitude. North is toward the top of the image. The Kamchatka volcanoes are among the most active volcanoes in the world. The volcanic zone sits above a tectonic plate boundary, where the Pacific plate is sinking beneath the northeast edge of the Eurasian plate. The Endeavour crew obtained dramatic video and photographic images of this region during the eruption, which will assist scientists in analyzing the dynamics of the current activity. The colors in this image were obtained using the following radar channels: red represents the L-band (horizontally transmitted and received); green represents the L-band (horizontally transmitted and vertically received); blue represents the C-band (horizontally transmitted and vertically received). The Kamchatka River runs from left to right across the image. An older, dormant volcanic region appears in green on the north side of the river. The current eruption included massive ejections of gas, vapor and ash, which reached altitudes of 20,000 meters (65,000 feet). New lava flows are visible on the flanks of Kliuchevskoi, appearing yellow/green in the image, superimposed on the red surfaces in the lower center. Melting snow triggered mudflows on the north flank of the volcano, which may threaten agricultural zones and other settlements in the valley to the north. 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 Raumfahrte.v. (DLR), the major partner in science, operations and data processing of X-SAR.

1994-01-01

331

Space Radar Image of Kiluchevskoi, Volcano, Russia  

NASA Technical Reports Server (NTRS)

This is an image of the area of Kliuchevskoi volcano, Kamchatka, Russia, which began to erupt on September 30, 1994. Kliuchevskoi is the blue triangular peak in the center of the image, towards the left edge of the bright red area that delineates bare snow cover. The image was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on its 88th orbit on October 5, 1994. The image shows an area approximately 75 kilometers by 100 kilometers (46 miles by 62 miles) that is centered at 56.07 degrees north latitude and 160.84 degrees east longitude. North is toward the bottom of the image. The radar illumination is from the top of the image. The Kamchatka volcanoes are among the most active volcanoes in the world. The volcanic zone sits above a tectonic plate boundary, where the Pacific plate is sinking beneath the northeast edge of the Eurasian plate. The Endeavour crew obtained dramatic video and photographic images of this region during the eruption, which will assist scientists in analyzing the dynamics of the recent activity. The colors in this image were obtained using the following radar channels: red represents the L-band (horizontally transmitted and received); green represents the L-band (horizontally transmitted and vertically received); blue represents the C-band (horizontally transmitted and vertically received). In addition to Kliuchevskoi, two other active volcanoes are visible in the image. Bezymianny, the circular crater above and to the right of Kliuchevskoi, contains a slowly growing lava dome. Tolbachik is the large volcano with a dark summit crater near the upper right edge of the red snow covered area. The Kamchatka River runs from right to left across the bottom of the image. The current eruption of Kliuchevskoi included massive ejections of gas, vapor and ash, which reached altitudes of 15,000 meters (50,000 feet). Melting snow mixed with volcanic ash triggered mud flows on the 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.

1994-01-01

332

Europlanet Integrated and Distributed Information Service  

NASA Astrophysics Data System (ADS)

During the past decades the various disciplines in planetary sciences have developed to a very high international standard. But the collaboration between the different fields should be improved. To overcome the current fragmentation of the EU Planetary Science community and thereby to increase the scientific return of the related investment, the EU commission is funding via its Framework Program 7 the development of the "Europlanet Research Infrastructure -Europlanet RI". The Europlanet RI will consolidate the integration of the European Planetary Science community which started with Europlanet's FP6 project and will integrate major parts of the related distributed European infrastructure to be shared, fed and expanded by all planetary scientists. This infrastructure encompasses as diverse components as space exploration, ground-based observations, laboratory experiments and numerical modeling teams. Europlanet RI aims at bringing scientists from Europe and beyond together who are working in these fields, support the exchange of experts and ideas and make as many resources and data as possible available to the research community. A central part of Europlanet RI is the "Integrated and Distributed Information Service" or Europlanet-IDIS. The task of IDIS as central part of Europlanet is to provide an easy-to-use Web-based platform to locate teams and laboratories with special knowledge needed to support the own research activities, give access to the wealth of already available data, initiate new research activities needed to interpret accumulated data or to solve open questions, and to exploit synergies between space-based missions and capabilities of ground based observatories. It also offers to a wide range of teams and laboratories the possibility to share their data, advertise their capabilities and increase the scientific return by cooperation. IDIS is organized as an EU FP7 Support Activity, consisting of different access nodes which are connected by 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.g. the Technical Node at http://www.europlanet-idis.fi/

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

2009-04-01

333

A Conceptual Design for a Small Deployer Satellite  

NASA Astrophysics Data System (ADS)

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 industrial partners, has started the development of a space mission, named DeSat, focused on a new highly innovative micro satellite bus for LEO, entirely designed by an integrated team of students and researchers. The first mission is scheduled to fly at the end of 2003 on a converted Russian ICBM. The paper is intended to present the main features of DeSat mission, its goals and the activities that have been done by students and researchers to achieve the micro satellite platform design. The principal payload of the entire system is represented by a recirculating ball screw boom whose mass reaches one third of the total mass budget. The goal of the mission is to demonstrate the validity of its design also for space applications, which may range from precise off platform positioning of devices and instruments to GPS interferometry, sensor measurements and robotics. The satellite geometry, when the boom is in deployed configuration, is so stretched that the name "deployable satellite" has come out naturally. The large deployment mechanism, compared to the small bus, has influenced the design of every satellite subsystem leading to innovative solutions in terms of design, materials, equipment and instruments.

Zumbo, S.

2002-01-01

334

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

NASA Astrophysics Data System (ADS)

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.

Adami, Giorgio

2006-12-01

335

Space Radar Image of Death Valley, California  

NASA Technical Reports Server (NTRS)

This image shows Death Valley, California, centered at 36.629 degrees north latitude, 117.069 degrees west longitude. The image shows Furnace Creek alluvial fan and Furnace Creek Ranch at the far right, and the sand dunes near Stove Pipe Wells at the center. The dark fork-shaped feature between Furnace Creek fan and the dunes is a smooth flood-plain which encloses Cottonball Basin. This SIR-C/X-SAR supersite is an area of extensive field investigations and has been visited by both Space Radar Lab astronaut crews. Elevations in the valley range from 70 meters (230 feet) below sea level, the lowest in the United States, to more than 3,300 meters (10,800 feet) above sea level. Scientists are using SIR-C/X-SAR data from Death Valley to help answer a number of different questions about Earth's geology. One question concerns how alluvial fans are formed and change through time under the influence of climatic changes and earthquakes. Alluvial fans are gravel deposits that wash down from the mountains over time. They are visible in the image as circular, fan-shaped bright areas extending into the darker valley floor from the mountains. Information about the alluvial fans helps scientists study Earth's ancient climate. Scientists know the fans are built up through climatic and tectonic processes and they will use the SIR-C/X-SAR data to understand the nature and rates of weathering processes on the fans, soil formation and the transport of sand and dust by the wind. SIR-C/X-SAR's sensitivity to centimeter-scale (inch-scale) roughness provides detailed maps of surface texture. Such information can be used to study the occurrence and movement of dust storms and sand dunes. The goal of these studies is to gain a better understanding of the record of past climatic changes and the effects of those changes on a sensitive environment. This may lead to a better ability to predict future response of the land to different potential global climate-change scenarios. Death Valley is 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).

1999-01-01

336

Subsidence in Coastal Louisiana  

NASA Astrophysics Data System (ADS)

Understanding Subsidence: Implications for Coastal Restoration and Protection Planning; New Orleans, Louisiana, 13 January 2009; The high rates of subsidence in coastal Louisiana are a well-documented component of regional land loss, ecosystem function deterioration, and coastal engineering failures. For agencies tasked with managing the effects of subsidence, the wide variability of these rates and their sharp spatial gradients pose significant challenges. Further, there is a lack of scientific consensus on what processes are most responsible for the observed subsidence, which creates uncertainty surrounding spatial patterns of subsidence, as well as a lack of consensus on what areas are most susceptible to it—not trivial questions for the resource management community. To address these issues, the University of New Orleans (UNO) and the Louisiana Coastal Area Science and Technology Program held a symposium in January. The objective of the symposium was twofold: (1) to educate coastal managers on the assumptions of the contemporary methods of monitoring subsidence and (2) to solicit input from the management community on their primary subsidence concerns regarding coastal management projects such as levee construction and mechanical marsh creation, emphasizing spatial and temporal scale issues. Symposium outcomes were incorporated into a guidance manuscript prepared by UNO to help communicate the current scientific understanding of subsidence in coastal Louisiana to the nontechnical management community.

Yuill, Brendan; Reed, Denise J.

2009-06-01

337

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

PubMed

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

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

2011-10-01

338

Heisenberg model for radical reactions. Part 3. Direct exchange coupling between transition metal ions and triplet methylene  

NASA Astrophysics Data System (ADS)

Ab initio UHF calculations have been carried out for naked transition metal-methylene ions. The low-spin open-shell states are found to be the ground states of these ions, in accord with the GVB-CI results. The low-spin transition metal-methylene ions are regarded as direct exchange-coupled systems formed from high-spin transition metal ions and the triplet monocentric diradical. The direct exchange couplings between these species can be described on the basis of the Heisenberg model. The CASSCF calculations using UHF natural orbitals (UNOs) have been carried out for low-spin states, showing that UNOs and their occupation numbers are good trials. However, they provide poor binding energies for the transition metal-carbon double bonds and indicate the necessity for dynamical correlation corrections. The approximate spin-projected UHF Møller-Plesset and UHF coupled-cluster methods provide reasonable binding energies for the transition metal-methylene ions, which are close to those of modified coupled-pair functional (CPF) and average CPF methods.

Yamanaka, S.; Kawamura, T.; Noro, T.; Yamaguchi, K.

1994-07-01

339

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

PubMed Central

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

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

2012-01-01

340

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

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.

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

2010-01-01

341

Observaciones de fulguraciones en rayos X duros  

NASA Astrophysics Data System (ADS)

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.

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

342

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

NASA Astrophysics Data System (ADS)

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

Gumbau, Manuel Forner

2010-11-01

343

National decline in donor heart utilization with regional variability: 1995-2010.  

PubMed

The severe shortage of donor hearts limits the availability of transplantation for the growing population of patients with end-stage heart disease. We examined national trends in donor heart acceptance for transplant. OPTN data were analyzed for all potential adult cardiac organ donors between 1995 and 2010. Donor heart disposition was categorized as transplanted, declined for transplant or other. We studied changes in the probability of donor heart acceptance according to demographic and clinical characteristics, nationwide and by UNOS region. Of 82?053 potential donor hearts, 34% were accepted and 48% were declined (18% used for other purposes). There was a significant decrease in donor heart acceptance from 44% in 1995 to 29% in 2006, and subsequent increase to 32% in 2010. Older donor age, female sex and medical co-morbidities predicted non-acceptance. Donor age and co-morbidities increased during the study period, with a concomitant decrease in acceptance of hearts from donors with undesirable characteristics. Overall, predictors of heart non-use were similar across UNOS regions, although utilization varied between regions. Regional variation suggests a potential to improve heart acceptance rates in under-performing regions, and supports research and policy efforts aimed at establishing evidence-based criteria for donor heart evaluation and acceptance for transplantation. PMID:25676093

Khush, K K; Zaroff, J G; Nguyen, J; Menza, R; Goldstein, B A

2015-03-01

344

Competitive complexation of nitrates and chlorides to uranyl in a room temperature ionic liquid.  

PubMed

By coupling EXAFS, UV-vis spectroscopy, and molecular dynamics and quantum mechanical calculations, we studied the competitive complexation of uranyl cations with nitrate and chloride ions in a water immiscible ionic liquid (IL), C(4)mimTf(2)N (C(4)mim(+): 1-butyl-3-methyl-imidazolium; Tf(2)N(-) = (CF(3)SO(2))(2)N)(-): bis(trifluoromethylsulfonyl)imide). Both nitrate and chloride are stronger ligands for uranyl than the IL Tf(2)N(-) or triflate anions and when those anions are simultaneously present, neither the limiting complex UO(2)(NO(3))(3)(-) nor UO(2)Cl(4)(2-) alone could be observed. At a U/NO(3)/Cl ratio of 1/2/2, the dominant species is likely UO(2)Cl(NO(3))(2)(-). When chloride is in excess over uranyl with different nitrate concentrations (U/NO(3)/Cl ratio of 1/2/6, 1/4/4, and 1/12/4) the solution contains a mixture of UO(2)Cl(4)(2-) and UO(2)Cl(3)(NO(3))(2-) species. Furthermore, it is shown that the experimental protocol for introducing these anions to the solution (either as uranyl counterion, as added salt, or as IL component) influences the UV-vis spectra, pointing to the formation of different kinetically equilibrated complexes in the IL. PMID:20557035

Gaillard, C; Chaumont, A; Billard, I; Hennig, C; Ouadi, A; Georg, S; Wipff, G

2010-07-19

345

Unilateral vs. bilateral total hip arthroplasty - the influence of medial femoral head offset and effects on strength and aerobic endurance capacity.  

PubMed

The purpose of the present study was to determine whether unilaterally operated total hip arthroplasty (THA) patients were superior to bilaterally operated THA patients with respect to aerobic endurance capacity, muscle strength and gait patterns 3-5 years after surgery, and to what extent medial femoral head offset (FO) influenced hip abductor strength. 10 unilaterally operated THA patients with normal FO (UNO), 10 bilaterally operated THA patients with normal FO (BNO) and 10 bilaterally operated THA patients with abnormal offset (BDO) participated in the study. Improved muscle strength in the healthy leg of the UNO did not result in differences compared to the BNO and the BDO in work efficiency, gait patterns or maximal oxygen consumption (VO2max ) A reduced FO in the BDO did not result in lower hip abduction strength compared to the BNO. However, a correlation between reduced FO and low abduction strength was found in the BDO (r=0.866, p=0.001). Future focus should be on the quality of rehabilitation. PMID:20544648

Husby, Vigdis S; Bjørgen, Siri; Hoff, Jan; Helgerud, Jan; Benum, Pål; Husby, Otto S

2010-01-01

346

A High Incidence of Native Portal Vein Thrombosis in Veterans Undergoing Liver Transplantation  

PubMed Central

The incidence of native portal vein thrombosis (PVT) in liver transplant recipients has been reported to range from 2.1 to 13.8%. We have identified an inordinately high incidence of PVT in a consecutive series of U.S. veterans receiving liver transplants. Between October 1989 and February 1994, 88 consecutive U.S. veterans received 99 orthotopic liver transplants under primary Tacrolimus (Prograf, formerly FK506) based immunosuppression. A number of clinical features were examined in an effort to identify risk factors for PVT and outcome was compared to patients without PVT. Native PVT was present in 23/88 (26%) patients. All of these patients were male U.S. veterans with a mean age of 47 years. When compared to the 65 patients without PVT, we found no significant difference with respect to underlying liver disease, age, Childs-Pugh score (mean = 12), UNOS status as defined prior to April 1995 (95% UNOS 3 or 4), previous abdominal surgery, or liver volume. Median blood loss for patients with PVT (21 units of packed red blood cells) was greater than for those without PVT (14 units, P = 0.04). Portal thrombectomy was performed in 11 patients, 11 patients required mesoportal jump grafts, and 1 patient had an interposition graft. Standard veno-venous bypass was used in 10 patients with single bypass utilized for the remainder. Actuarial patient survival for all patients at 1, 2, and 4 years was 88, 85, and 79%, respectively. There was no significant difference in patients with or without PVT. Patients with PVT had poorer graft survival than patients without PVT (86% vs 65%, 1 year; 81% vs 65%, 2 years; 81% vs 61%, 4 years; P = 0.03); however, this was not related to technical problems with the portal venous inflow. PVT occurred in 26% of U.S. veterans undergoing liver transplantation. These patients had significantly higher operative blood loss and poorer graft survival. The high incidence of postnecrotic cirrhosis in a predominantly male group of patients with advanced disease, as is evident by the high mean Childs-Pugh score and UNOS status, perhaps accounts for our observations. PMID:8598664

Gayowski, Timothy J.; Marino, Ignazio R.; Doyle, Howard R.; Echeverri, Luis; Mieles, Luis; Todo, Satoru; Wagener, Marilyn; Singh, Nina; Yu, Victor L.; Fung, John J.; Starzl, Thomas E.

2010-01-01

347

Nuclear half-lives for {alpha}-radioactivity of elements with 100 {<=} Z {<=} 130  

SciTech Connect

Theoretical estimates for the half-lives of about 1700 isotopes of heavy elements with 100 {<=} Z {<=} 130 are tabulated using theoretical Q-values. The quantum mechanical tunneling probabilities are calculated within a WKB framework using microscopic nuclear potentials. The microscopic nucleus-nucleus potentials are obtained by folding the densities of interacting nuclei with a density-dependent M3Y effective nucleon-nucleon interaction. The {alpha}-decay half-lives calculated in this formalism using the experimental Q-values were found to be in good agreement over a wide range of experimental data spanning about 20 orders of magnitude. The theoretical Q-values used for the present calculations are extracted from three different mass estimates viz. Myers-Swiatecki, Muntian-Hofmann-Patyk-Sobiczewski, and Koura-Tachibana-Uno-Yamada.

Chowdhury, P. Roy [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064 (India)], E-mail: partha.roychowdhury@saha.ac.in; Samanta, C. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Physics Department, Gottwald Science Center, University of Richmond, Richmond, VA 23173 (United States); Physics Department, Virginia Commonwealth University, Richmond, VA 23284 (United States)], E-mail: chhanda.samanta@saha.ac.in; Basu, D.N. [Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064 (India)], E-mail: dnb@veccal.ernet.in

2008-11-15

348

An analysis of the impact of vertical integration on the Texas Hog industry  

E-print Network

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McClure, Robert Harold

2012-06-07

349

Feedback algorithm and web-server for protein structure alignment.  

PubMed

We have developed a feedback algorithm for protein structure alignment that uses a series of phases to improve the global alignment between two protein backbones. The method implements a self-improving learning strategy by sending the output of one phase, the global alignment, to the next phase as an input. A web portal implementing this method has been constructed and is freely available for use at http://fpsa.cs.uno.edu/. Based on hundreds of test cases, we compare our algorithm with three other, commonly used methods: CE, Dali, and SSM. Our results show that, in most cases, our algorithm outputs a larger number of aligned positions when the (C(alpha)) RMSD is comparable. Also, in many cases where the number of aligned positions is larger or comparable to the other methods, our learning method is able to achieve a smaller (C(alpha)) RMSD than the other methods tested. PMID:18549304

Zhao, Zhiyu; Fu, Bin; Alanis, Francisco J; Summa, Christopher M

2008-06-01

350

Feedback algorithm and web-server for protein structure alignment.  

PubMed

We have developed a feedback algorithm for protein structure alignment between two protein backbones. A web portal implementing this method has been constructed and is freely available for use at http://fpsa.cs.uno.edu/ with a mirror site at http://fpsa.cs.panam.edu/FPSA/. We compare our algorithm with three other, commonly used methods: CE, DaliLite and SSM. The results show that in most cases our algorithm outputs a larger number of aligned positions when the (Calpha) RMSD is comparable. Also, in many cases where the number of aligned positions is larger or comparable, our learning method is able to achieve a smaller (Calpha) RMSD than the other methods tested. This trend of larger number of aligned positions and smaller (Calpha) RMSD is observed more frequently in cases where the similarity between protein structures is weak. PMID:19642273

Zhao, Zhiyu; Fu, Bin; Alanis, Francisco J; Summa, Christopher M

2008-01-01

351

Actividad en la superficie lunar: fenómenos lunares transitorios  

NASA Astrophysics Data System (ADS)

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.

Roa, A. F. C.

352

TRANSMISIÓN VERTICAL DE HTLV-1 EN EL PERÚ  

PubMed Central

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

Villaverde, Jorge Alarcón; Romaní, Franco Romaní; Torres, Silvia Montano; Zunt, Joseph R.

2012-01-01

353

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

NASA Technical Reports Server (NTRS)

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.

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

1997-01-01

354

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

NASA Astrophysics Data System (ADS)

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.

Aguado, M. Paniagua Y. A.

355

Different modalities of arterial reconstruction in hepatic retransplantation using right partial graft  

PubMed Central

Though split-liver and living-related transplantation are routinely performed, they are done almost exclusively for primary liver transplantation because of potential surgical difficulties. These difficulties are generally related to arterial revascularization, particularly if there is hepatic artery thrombosis. According to UNOS data, of the hepatic retransplantations performed between 1996 and 2007, only 8.7% were done using right or extended right grafts from deceased donors, and 14.3% using right grafts from live donors. Here we report our experience with 5 hepatic retransplantations in which right partial grafts resulting from conventional in situ splits, and one right lobe resulting from an adult-to-adult living-related transplant, were successfully used with different modalities of graft arterialization. PMID:19598313

Gruttadauria, Salvatore; di Francesco, Fabrizio; Spada, Marco; Milazzo, Mariapina; Gridelli, Bruno

2009-01-01

356

Probing supernova shock waves and neutrino flavor transitions in next-generation water-Cherenkov detectors  

E-print Network

Several current projects aim at building a large water-Cherenkov detector, with a fiducial volume about 20 times larger than in the current Super-Kamiokande experiment. These projects include the Underground nucleon decay and Neutrino Observatory (UNO) in the Henderson Mine (Colorado), the Hyper-Kamiokande (HK) detector in the Tochibora Mine (Japan), and the MEgaton class PHYSics (MEMPHYS) detector in the Frejus site (Europe). We study the physics potential of a reference next-generation detector (0.4 Mton of fiducial mass) in providing information on supernova neutrino flavor transitions with unprecedented statistics. After discussing the ingredients of our calculations, we compute neutrino event rates from inverse beta decay ($\\bar\

G. L. Fogli; E. Lisi; A. Mirizzi; D. Montanino

2005-03-10

357

IL TRAPIANTO ORTOTOPICO DEL FEGATO  

PubMed Central

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

STARZL, THOMAS E.

2010-01-01

358

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

NASA Astrophysics Data System (ADS)

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.

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

2013-03-01

359

Accounting methods for recognition of fixed asset underdepreciation  

E-print Network

~CCOOmrxta:::;. "?OO":-ON:. : C;eN rX~N G~'' iiLGD A3o 'i UNO'''iJ3r'l'. '4'XLTX iN . KcBQzcl . RMllson ILM811 June 1:i, ; 9, &29"/5 Qubaittcd to thc . "acuity of tbc Agricultural and ". echanical ColloCe of foxes ) arti 11 I'lllfi1i3ent of the . A... Of USG82%18PP. . Cid'tiOQ e e ~ e e e ~ ~ ~ ~ e e ~ ~ XTe XtlQ312(X4 QA4~ JOPP3C3. gt] Oll ~ e e ~ ~ e ~ ~ e ~ ~ e e ~ ~ e ~ I JXe AQCOlglt3XQ fOX' til(kCXAC'+FBCe GM O'A e ~ e ~ e ~ ~ e ~ ~ e ~ e ~ XVe;~rt Pf J, mrVO?" Of . 'uamal ill)agM e...

Hidell, Richard Robinson

1948-01-01

360

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

SciTech Connect

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.

Ibrahim, Saad M. [Northwestern University Feinberg School of Medicine, Robert H. Lurie Comprehensive Cancer Center, Department of Radiology, Section of Interventional Radiology (United States); Kulik, Laura [Northwestern University Feinberg School of Medicine, Department of Medicine, Division of Hepatology (United States); Baker, Talia [Northwestern University Feinberg School of Medicine, Division of Transplant Surgery (United States); Ryu, Robert K. [Northwestern University Feinberg School of Medicine, Robert H. Lurie Comprehensive Cancer Center, Department of Radiology, Section of Interventional Radiology (United States); Mulcahy, Mary F. [Northwestern University Feinberg School of Medicine, Department of Medicine, Division of Hematology and Oncology, Robert H. Lurie Comprehensive Cancer Center (United States); Abecassis, Michael [Northwestern University Feinberg School of Medicine, Division of Transplant Surgery (United States); Salem, Riad; Lewandowski, Robert J., E-mail: r-lewandowski@northwestern.edu [Northwestern University Feinberg School of Medicine, Robert H. Lurie Comprehensive Cancer Center, Department of Radiology, Section of Interventional Radiology (United States)

2012-10-15

361

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

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!

Desarrollado por American Red Cross, Asian Pacific Fund, California Earthquake Authority, Governor's Office of Emergency Services, New America Media, U.S. Department of Homeland Security Federal Emergency Management Agency, and U.S. Geological Survey

2007-01-01

362

Heart Transplant Survival Outcomes for Adriamycin Dilated Cardiomyopathy  

PubMed Central

In 2015 there will be an estimated 11.3 million cancer survivors. With a growing population of cancer survivors, it is imperative to understand treatment options and outcomes for chemotherapy related cardiomyopathy. Anthracycline (AC) based chemotherapy causes heart failure (HF) in approximately 5% of patients. Orthotopic heart transplant (OHT) is an option for cancer survivors in complete remission who develop end-stage HF. We examined retrospective OHT data collected from United Network of Organ Sharing (UNOS) from 1987–2011. The primary aim to was characterize the survival in patients with either the primary diagnosis of “Dilated Cardiomyopathy: Adriamycin” (DCA) versus “all other” causes of cardiomyopathy. The secondary aim was to define the differences in primary cause of death and to describe the temporal relationship of DCA OHT. The UNOS database identified 453 OHT for the diagnosis of DCA and 51,312 OHT for all other causes of cardiomyopathy. DCA group was significantly younger with a higher percentage of females. After adjusting for age, gender, and previous history of malignancy, the 10-year survival curves show that DCA patients have an improved survival over all other causes cardiomyopathy (HR 1.28, p = 0.026). There was no difference in the primary cause of death between the 2 groups. There was a statistically significant increasing temporal trend in the number of OHT for the diagnosis DCA. In conclusion patients who undergo OHT for DCA have a favorable 10-year survival, making OHT a good therapeutic option for end-stage HF due to anthracyclines. Additionally there was no increased risk of cancer related deaths in the DCA, demonstrating that recurrent malignancy does not impact long-term survival. Temporal trends demonstrate that DCA remains a significant problem for cancer survivors. PMID:23195041

Lenneman, Andrew J.; Wang, Li; Wigger, Mark; Frangoul, Haydar; Harrell, Frank E.; Silverstein, Cheri; Sawyer, Douglas B.; Lenneman, Carrie G.

2013-01-01

363

Space Radar Image of Kilauea, Hawaii in 3-D  

NASA Technical Reports Server (NTRS)

This is a three-dimensional perspective view of a false-color image of the eastern part of the Big Island of Hawaii. It was produced using all three radar frequencies -- X-band, C-band and L-band -- from the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) flying on the space shuttle Endeavour, overlaid on a U.S. Geological Survey digital elevation map. Visible in the center of the image in blue are the summit crater (Kilauea Caldera) which contains the smaller Halemaumau Crater, and the line of collapse craters below them that form the Chain of Craters Road. The image was acquired on April 12, 1994 during orbit 52 of the space shuttle. The area shown is approximately 34 by 57 kilometers (21 by 35 miles) with the top of the image pointing toward northwest. The image is centered at about 155.25 degrees west longitude and 19.5 degrees north latitude. The false colors are created by displaying three radar channels of different frequency. Red areas correspond to high backscatter at L-HV polarization, while green areas exhibit high backscatter at C-HV polarization. Finally, blue shows high return at X-VV polarization. Using this color scheme, the rain forest appears bright on the image, while the green areas correspond to lower vegetation. The lava flows have different colors depending on their types and are easily recognizable due to their shapes. The flows at the top of the image originated from the Mauna Loa volcano. Kilauea volcano has been almost continuously active for more than the last 11 years. Field teams that were on the ground specifically to support these radar observations report that there was vigorous surface activity about 400 meters (one-quartermile) inland from the coast. A moving lava flow about 200 meters (650 feet) in length was observed at the time of the shuttle overflight, raising the possibility that subsequent images taken during this mission will show changes in the landscape. Currently, most of the lava that is 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 companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA)

1999-01-01

364

Space Radar Image of Raco, Michigan  

NASA Technical Reports Server (NTRS)

These are two false-color composites of Raco, Michigan, located at the eastern end of Michigan's upper peninsula, west of Sault Ste. Marie and south of Whitefish Bay on Lake Superior. The two images (centered at 46.39 degrees north latitude, 84.88 degrees west longitude) show significant seasonal changes in the mid-latitude region of mixed deciduous and coniferous forests. The images were acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the shuttle Endeavour on the sixth orbit of each mission. In these images, red is L-band (23 cm) with horizontal/vertical polarization; green is C-band (6 cm) with horizontal/vertical polarization; blue is C-band with horizontal/horizontal polarization. The region shown is largely forested and includes a large portion of Hiawatha National Forest, as well as an agricultural region near the bottom of each image. In early April, the area was snow-covered with up to 50 centimeters (19.5 inches) of snow in forest clearings and agricultural fields. Buds had not yet broken on deciduous trees, but the trees were not frozen and sap was generally flowing. Lake Superior, in the upper right, and the small inland lakes were frozen and snow-covered on April 9, 1994. By the end of September, deciduous trees were just beginning to change color after a relatively wet period. Leaf loss was estimated at about 30 percent, depending on the species, and the soil was moist to wet after a heavy rainfall on September 28, 1994. Most agricultural fields were covered with grasses of up to 60 centimeters (23 inches) in height. In the two images the colors are related to the types of land cover (i.e. vegetation type) and the brightness is related to the amount of plant material and its relative moisture content. Significant seasonal changes between early spring and early fall are illustrated by this pair of images. For the agricultural region near the bottom of the images, the change from snow-cover to moist 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 German space agency, Deutsche Agentur fr Raumfahrtangelegenheiten (DARA), and the Italian space agen

1994-01-01

365

Space Radar Image of Yellowstone Park, Wyoming  

NASA Technical Reports Server (NTRS)

These two radar images show the majestic Yellowstone National Park, Wyoming, the oldest national park in the United States and home to the world's most spectacular geysers and hot springs. The region supports large populations of grizzly bears, elk and bison. In 1988, the park was burned by one of the most widespread fires to occur in the northern Rocky Mountains in the last 50 years. Surveys indicated that 793,880 acres of land burned. Of that, 41 percent was burned forest, with tree canopies totally consumed by the fire; 35 percent was a combination of unburned, scorched and blackened trees; 13 percent was surface burn under an unburned canopy; 6 percent was non-forest burn; and 5 percent was undifferentiated burn. Six years later, the burned areas are still clearly visible in these false-color radar images obtained by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar on board the space shuttle Endeavour. The image at the left was obtained using the L-band radar channel, horizontally received and vertically transmitted, on the shuttle's 39th orbit on October 2, 1994. The area shown is 45 kilometers by 71 kilometers (28 miles by 44 miles) in size and centered at 44.6 degrees north latitude, 110.7 degrees west longitude. North is toward the top of the image (to the right). Most trees in this area are lodge pole pines at different stages of fire succession. Yellowstone Lake appears as a large dark feature at the bottom of the scene. At right is a map of the forest crown, showing its biomass, or amount of vegetation, which includes foliage and branches. The map was created by inverting SIR-C data and using in situ estimates of crown biomass gathered by the Yellowstone National Biological Survey. The map is displayed on a color scale from blue (rivers and lakes with no biomass) to brown (non-forest areas with crown biomass of less than 4 tons per hectare) to light brown (areas of canopy burn with biomass of between 4 and 12 tons per hectare). Yellow 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 Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italian

1994-01-01

366

Space Radar Image of Weddell Sea, Antarctica  

NASA Technical Reports Server (NTRS)

This Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar color composite shows a portion of the Weddell Sea, which is adjacent to the continent of Antarctica. The image shows extensive coverage of first-year sea ice mixtures and patches of open water inside the ice margin. The image covers a 100 kilometer by 30 kilometer (62 mile by 18.5 mile) region of the southern ocean, centered at approximately 57 degrees south latitude and 3 degrees east longitude, which was acquired on October 3, 1994. Data used to create this image were obtained using the L-band (horizontally transmitted and vertically received) in red; the L-band (horizontally transmitted and received) in green; and the C-band (horizontally transmitted and received) in blue. The sea ice, which appears rust-brown in the image, is composed of loosely packed floes from approximately 1 meter to 2 meters (3 feet to 6.5 feet) thick and ranging from 1 meter to 20 meters (3 feet to 65.5 feet) in diameter. Large patches of open water, shown as turquoise blue, are scattered throughout the area, which is typical for ice margins experiencing off-ice winds. The thin, well-organized lines clearly visible in the ice pack are caused by radar energy reflected by floes riding the crest of ocean swells. The wispy, black features seen throughout the image represent areas where new ice is forming. Sea ice, because it acts as an insulator, reduces the loss of heat between the relatively warm ocean and cold atmosphere. This interaction is an important component of the global climate system. Because of the unique combination of winds, currents and temperatures found in this region, ice can extend many hundreds of kilometers north of Antarctica each winter, which classifies the Weddell Sea as one of nature's greatest ice-making engines. During the formation of sea ice, great quantities of salt are expelled from the frozen water. The salt increases the density of the upper layer of sea water, which then sinks to great depths. 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.

1994-01-01

367

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

NASA Technical Reports Server (NTRS)

These four images of the Long Valley region of east-central California illustrate the steps required to produced three dimensional data and topographics maps from radar interferometry. All data displayed in these images were acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour during its two flights in April and October, 1994. The image in the upper left shows L-band (horizontally transmitted and received) SIR-C radar image data for an area 34 by 59 kilometers (21 by 37 miles). North is toward the upper right; the radar illumination is from the top of the image. The bright areas are hilly regions that contain exposed bedrock and pine forest. The darker gray areas are the relatively smooth, sparsely vegetated valley floors. The dark irregular patch near the lower left is Lake Crowley. The curving ridge that runs across the center of the image from top to bottom is the northeast rim of the Long Valley Caldera, a remnant crater from a massive volcanic eruption that occurred about 750,000 years ago. The image in the upper right is an interferogram of the same area, made by combining SIR-C L-band data from the April and October flights. The colors in this image represent the difference in the phase of the radar echoes obtained on the two flights. Variations in the phase difference are caused by elevation differences. Formation of continuous bands of phase differences, known as interferometric 'fringes', is only possible if the two observations were acquired from nearly the same position in space. For these April and October data takes, the shuttle tracks were less than 100 meters (328 feet) apart. The image in the lower left shows a topographic map derived from the interferometric data. The colors represent increments of elevation, as do the thin black contour lines, which are spaced at 50-meter (164-foot) elevation intervals. Heavy contour lines show 250-meter intervals (820-foot). Total relief in 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.

1994-01-01

368

Space Radar Image of Mammoth Mountain, California  

NASA Technical Reports Server (NTRS)

These two false-color composite images of the Mammoth Mountain area in the Sierra Nevada Mountains, Calif., show significant seasonal changes in snow cover. The image at left was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar aboard the space shuttle Endeavour on its 67th orbit on April 13, 1994. The image is centered at 37.6 degrees north latitude and 119 degrees west longitude. The area is about 36 kilometers by 48 kilometers (22 miles by 29 miles). In this image, red is L-band (horizontally transmitted and vertically received) polarization data; green is C-band (horizontally transmitted and vertically received) polarization data; and blue is C-band (horizontally transmitted and received) polarization data. The image at right was acquired on October 3, 1994, on the space shuttle Endeavour's 67th orbit of the second radar mission. Crowley Lake appears dark at the center left of the image, just above or south of Long Valley. The Mammoth Mountain ski area is visible at the top right of the scene. The red areas correspond to forests, the dark blue areas are bare surfaces and the green areas are short vegetation, mainly brush. The changes in color tone at the higher elevations (e.g. the Mammoth Mountain ski area) from green-blue in April to purple in September reflect changes in snow cover between the two missions. The April mission occurred immediately following a moderate snow storm. During the mission the snow evolved from a dry, fine-grained snowpack with few distinct layers to a wet, coarse-grained pack with multiple ice inclusions. Since that mission, all snow in the area has melted except for small glaciers and permanent snowfields on the Silver Divide and near the headwaters of Rock Creek. On October 3, 1994, only discontinuous patches of snow cover were present at very high elevations following the first snow storm of the season on September 28, 1994. For investigations in hydrology and land-surface climatology, seasonal snow 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.

1994-01-01

369

Space Radar Image of Safsaf, North Africa  

NASA Technical Reports Server (NTRS)

This is a false-color image of the uninhabited Safsaf Oasis in southern Egypt near the Egypt/Sudan border. It was produced from data obtained from the L-band and C-band radars that are part of the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) onboard space shuttle Endeavour on April 9, 1994. The image is centered at 22 degree north latitude, 29 degrees east longitude. It shows detailed structures of bedrock; the dark blue sinuous lines are braided channels that occupy part of an old broad river valley. On the ground and in optical photographs, this big valley and the channels in it are invisible because they are entirely covered by windblown sand. Some of these same channels were observed in SIR-A images in 1981. It is hypothesized that the large valley was carved by one of several ancient predecessor rivers that crossed this part of North Africa, flowing westward, tens of millions of years before the Nile River existed. The Nile flows north about 300 kilometers (200 miles) to the east. The small channels are younger, and probably formed during relatively wet climatic periods within the past few hundred thousand years. This image shows that the channels are in a river valley located in an area where U.S. Geological Survey geologists and archeologists discovered an unusual concentration of hand axes (stone tools) used by Early Man (Homo erectus) hundreds of thousands of years ago. The image clearly shows that in wetter times, the valley would have supported game animals and vegetation. Today, as a result of climate change, the area in uninhabited and lacks water except fora few scattered oases. This color composite image was produced from C-band and L-band horizontal polarization images. The C-band image was assigned red, the L-band (HH) polarization image is shown in green, and the ratio of these two images (LHH/CHH) appears in blue. The primary and composite colors on the image indicate the degree to which the C-band, H-band, their 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, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Ag

1999-01-01

370

Space Radar Image of Mt. Rainer, Washington  

NASA Technical Reports Server (NTRS)

This is a radar image of Mount Rainier in Washington state. The volcano last erupted about 150 years ago and numerous large floods and debris flows have originated on its slopes during the last century. Today the volcano is heavily mantled with glaciers and snowfields. More than 100,000 people live on young volcanic mudflows less than 10,000 years old and, consequently, are within the range of future, devastating mudslides. This image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on its 20th orbit on October 1, 1994. The area shown in the image is approximately 59 kilometers by 60 kilometers (36.5 miles by 37 miles). North is toward the top left of the image, which was composed by assigning red and green colors to the L-band, horizontally transmitted and vertically, and the L-band, horizontally transmitted and vertically received. Blue indicates the C-band, horizontally transmitted and vertically received. In addition to highlighting topographic slopes facing the space shuttle, SIR-C records rugged areas as brighter and smooth areas as darker. The scene was illuminated by the shuttle's radar from the northwest so that northwest-facing slopes are brighter and southeast-facing slopes are dark. Forested regions are pale green in color; clear cuts and bare ground are bluish or purple; ice is dark green and white. The round cone at the center of the image is the 14,435-foot (4,399-meter) active volcano, Mount Rainier. On the lower slopes is a zone of rock ridges and rubble (purple to reddish) above coniferous forests (in yellow/green). The western boundary of Mount Rainier National Park is seen as a transition from protected, old-growth forest to heavily logged private land, a mosaic of recent clear cuts (bright purple/blue) and partially regrown timber plantations (pale blue). The prominent river seen curving away from the mountain at the top of the image (to the northwest) is the 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.

1994-01-01

371

Space Radar Image of Death Valley in 3-D  

NASA Technical Reports Server (NTRS)

This picture is a three-dimensional perspective view of Death Valley, California. This view was constructed by overlaying a SIR-C radar image on a U.S. Geological Survey digital elevation map. The SIR-C image is centered at 36.629 degrees north latitude and 117.069 degrees west longitude. We are looking at Stove Pipe Wells, which is the bright rectangle located in the center of the picture frame. Our vantage point is located atop a large alluvial fan centered at the mouth of Cottonwood Canyon. In the foreground on the left, we can see the sand dunes near Stove Pipe Wells. In the background on the left, the Valley floor gradually falls in elevation toward Badwater, the lowest spot in the United States. In the background on the right we can see Tucki Mountain. This SIR-C/X-SAR supersite is an area of extensive field investigations and has been visited by both Space Radar Lab astronaut crews. Elevations in the Valley range from 70 meters (230 feet) below sea level, the lowest in the United States, to more than 3,300 meters (10,800 feet) above sea level. Scientists are using SIR-C/X-SAR data from Death Valley to help the answer a number of different questions about Earth's geology. One question concerns how alluvial fans are formed and change through time under the influence of climatic changes and earthquakes. Alluvial fans are gravel deposits that wash down from the mountains over time. They are visible in the image as circular, fan-shaped bright areas extending into the darker valley floor from the mountains. Information about the alluvial fans helps scientists study Earth's ancient climate. Scientists know the fans are built up through climatic and tectonic processes and they will use the SIR-C/X-SAR data to understand the nature and rates of weathering processes on the fans, soil formation and the transport of sand and dust by the wind. SIR-C/X-SAR's sensitivity to centimeter-scale (inch-scale) roughness provides detailed maps of surface texture. Such information can be used to study the occurrence and movement of dust storms and sand dunes. The goal of these studies is to gain a better understanding of the record of past climatic changes and the effects of those changes on a sensitive environment. This may lead to a better ability to predict future response of the land to different potential global climate-change scenarios. Vertical exaggeration is 1.87 times; exaggeration of relief is a common tool scientists use to detect relationships between structure (for example, faults and fractures) and topography. Death Valley is also one of the primary calibration sites for SIR-C/X-SAR. In the lower right quadrant of the picture frame two bright dots can be seen which form a line extending to Stove Pipe Wells. These dots 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 signatures of these reflectors were analyzed by JPL scientists to calibrate the image used in this picture. The calibration team here also deployed transponders (electronic reflectors) and receivers to measure the radar signals from SIR-C/X-SAR on the ground. 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 German space agency, Deutsche

1999-01-01

372

Europe opens a window onto a violent Universe  

NASA Astrophysics Data System (ADS)

In the framework of ESA's cooperation with Russia, a Russian Proton launcher was chosen to place the Integral (INTErnational Gamma-Ray Astrophysics Laboratory) observatory in orbit. The launcher lifted off from Baikonur in Kazakhstan today at 10:41 local time (06:41 CEST). After re-ignition of its upper stage, it placed Integral in its 72-hour elliptical orbit, ranging from only 10000 km up to 153000 km from the Earth, i.e. nearly half the distance to the Moon. Controlled by ESA’s ESOC mission operations centre in Darmstadt in Germany, the satellite will now undergo a two-months test period intended first to verify that the instruments onboard are working correctly and then that the data they collect is of good quality. Integral was developed by Italy's Alenia Spazio supported by over 30 firms in Europe. The satellite (mass 4 000 kg, height 5 metres) has two main instruments: the SPI spectrometer and IBIS imager Developed by a Franco-German-led team, the spectrometer will conduct a spectral analysis of isolated sources and of regions of gamma-ray activity with unprecedented energy resolution (40 times better than previous satellites), using germanium detectors cooled to 85 K. Since mirrors and lenses are of no use in detecting gamma rays, the SPI uses the “coded-mask imaging” technique to form its images from very faint radiation. These images are then decoded by computer. The imager, designed by an Italian-led team, is the perfect partner for SPI. It has a weaker energy resolution, but an angular resolution 12 times sharper thanks to a coded mask optimised for the purpose and two new-generation detector layers. To supplement the observations by SPI and IBIS, Integral also carries a Danish X-ray imager (JEM-X), with twin detectors each fitted with coded masks, and a Spanish CCD imager (OMC) operating in the visible spectrum waveband. By combining the data collected by these four instruments, it will be possible, for the first time, to make simultaneous observations of high-energy phenomena at seven orders of magnitude, from visible light to gamma rays. All the raw data collected by Integral will be sent directly to the ground via the ESA station at Redu in Belgium, or the station operated by NASA - another partner in the programme - at Goldstone in the USA. The raw data will be centralised at ESOC in order to be processed and redistributed to the scientific community via the Integral Scientific Data Centre (ISDC) at Versoix in Switzerland. Operating in an orbit that enables it to spend most of its time outside the Van Allen radiation belts, which can hamper observation of cosmic gamma rays, Integral will primarily study the densest sky objects, such as neutron stars and black holes, which are all sources of very high energy radiation. While IBIS will supply very detailed images of these sources, SPI will conduct the first in-depth analysis of this gamma radiation. Integral’s observations should enable astrophysicists to confirm the presence of giant black holes at the centre of galaxies, starting with the Milky Way. Other areas of interest for the European gamma-ray observatory will include events of rare violence such as nova and supernova explosions. These will be explored with precision thanks to the gamma radiation given off by the radioactive isotopes emitted. Integral will also be a unique means for observing gamma bursts, these still largely unexplained explosions at the outer reaches of the Universe, which for the first time can be studied in parallel along a wide range of the electromagnetic spectrum. Integral is the second medium-size mission carried out under the Horizon 2000 programme, following the Huygens probe, whose destination is Saturn and its moon Titan; the third will be the Planck observatory, which will study the background noise of the Universe, as from 2007. The Integral mission should last at least two years.

2002-10-01

373

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

NASA Astrophysics Data System (ADS)

The Aptian stage at Madoz in the Sierra de Aralar, NE Spain, shows contrasting lithological succession of intercalated clastic-rich intervals and rudist-rich limestone beds varying between Medium Olive Gray (5Y 5/1) and Olive Gray (5Y 4/1). They are subdivided into different sub-units (Duvernois et al., 1972; Cherchi & Schroeder, 1998) with unit 1, as well as subunits 2a and 2b of "Madoz Limestone" are placed within the Lower Aptian Palorbitolina lenticularis Zone. Their stratigraphic level corresponds at least to the Deshayesites deshayesi ammonite zone, based on the presence of the nominate taxon in clastic Unit 1. Sub-unit 2b includes a distinct 180-cm thick black (Medium to Dark Gray, -N4 to N3) shale layer toward the close of the upper Lower Aptian. Detailed microfacies analysis was carried out on the Lower Aptian interval in order to characterize the different lithofacies and their possible relationship to Cretaceous OAE-1a. Subunit 2a is 20m thick and its microfacies consists of sparse and packed biomicrites, moderate to poorly sorted fine calcirudites and calcarenites composed of 40 - 50% remains of corals, predominantly non-rudist bivalves, echinoids, bryozoans, benthic foraminifera and calcareous algae indicative of well oxygenated conditions. Matrix and bioclasts are highly affected by neomorphism and growing of micritic envelopes is frequent. Superjacent subunit 2b is also 20m thick, but is lithologically very variable and consists of interbeds of indurated biomicrite with 30 - 50 % fossil fragments dominated by orbitolinids, and echinoids, non-rudist bivalves, benthic foraminifers, and algae as secondary components. These beds also contain 15 - 25 % mostly silt-size quartz grains, and clays. Other indurated biomicrite beds within subunit 2b contain 1 - 20 % fragments of non-rudist bivalves, echinoids, other benthic foraminifers, and algae, but orbitolinids are scarce. Terrigenous components make up 10 - 25 % of the matrix. Subunit 2b also includes soft 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.

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

2008-05-01

374

Dispositional optimism among American and Jordanian college students: are Westerners really more upbeat than Easterners?  

PubMed

The present study aimed at assessing some previous research conclusions, based primarily on comparisons of North Americans and East Asians, that Westerners tend to be optimistic while Easterners tend to be pessimistic. Two samples of European American and Jordanian college students were administered a questionnaire consisting of items measuring dispositional optimism along with items pertaining to risk and self-protective behaviors (e.g., seatbelt use, vehicular speeding, smoking) and social and demographic factors (e.g., sex, socioeconomic status, religiosity). The findings uncovered dispositional optimism to be stronger for American compared to Jordanian participants. Separate analyses of optimism versus pessimism revealed that Jordanian participants were more pessimistic, but not less optimistic than their American counterparts. No significant correlations were found between dispositional optimism and sex, socioeconomic status, or religiosity. The levels of optimism displayed by Jordanians in this study are inconsistent with previous claims of an optimistic West and a pessimistic East, and suggest that self-enhancing processes may not be confined to Western or highly individualistic groups. The findings did not uncover an association between dispositional optimism and risk or self-protective behaviors. Multiple regression analyses showed cultural background and sex to be the best predictors of these behaviors. The implications of these findings are discussed. La présente étude avait pour but d'évaluer quelques conclusions de recherches passées, fondées principalement sur des comparaisons de nord-américains et d'asiatiques de l'est, indiquant que les occidentaux tendent à être optimistes alors que les orientaux tendent à être pessimistes. Deux échantillons d'étudiants américains-européens et jordaniens du collège ont rempli un questionnaire ayant des items mesurant l'optimisme dispositionnel avec d'autres items qui portent sur les comportements de risque et d'auto-protection (e.g., la ceinture de sécurité, la vitesse au volant, l'usage de tabac), sur les facteurs sociaux et démographiques (e.g., le sexe, le statut socio-économique, la religiosité). Les résultats ont indiqué que l'optimisme dispositionnel était plus fort chez les américains en comparaison aux participants jordaniens. Des analyses séparées de l'optimisme versus le pessimisme ont montré que les participants jordaniens n'étaient pas pessimistes mais pas moins optimistes que leurs homologues américains. Il n'y avait pas de corrélations significatives entre l'optimisme dispotionnel et le sexe, le statut socio-économique et la religiosité. Les niveaux d'optimisme dispotionnel affichés par les jordaniens dans cette étude sont inconsistents avec les affirmations passées d'un occident optimiste et d'un orient pessimiste et suggèrent que les processus d'auto-amélioration pourraient ne pas être restreints aux occidentaux ou aux groupes hautement individualistes. Les résultats n'ont pas dévoilé une association entre l'optimise dispotionnel et les comportements de risque ou les comportements d'auto-protection. Des analyses de régression multiples ont indiqué que le contexte culturel et le sexe sont les meilleurs prédicteurs de ces comportements. Les implications de ces résultats sont discutées. El presente estudio se basó en la evaluación de algunas conclusiones de investigaciones anteriores, basadas principalmente en comparaciones de habitantes de norteamericanos con habitantes del Asia del este, en las que se proponía que mientras los occidentales tienden a ser optimistas, los orientales tienden a ser pesimistas. En dos muestras de estudiantes de la escuela superior europeo-americanos y jordanos se administró un cuestionario que consiste en preguntas que miden el optimismo disposicional junto con preguntas que evalúan conductas de riesgo y de autoprotección (p.e., uso de cinturón de seguridad, velocidad de manejo, fumar) así como factores sociales y demográficos (p.e., sexualidad, estatus socioeconómico, reli

Khallad, Yacoub

2010-02-01

375

PFI-ZEKE (Pulsed Field Ionization-Zero Electron Kinetic Energy) para el estudio de iones  

NASA Astrophysics Data System (ADS)

Entre las áreas hacia donde ha evolucionado la Química en los últimos años están los estudios de sistemas con especies reactivas de alta energía y los dominados por fuerzas intermoleculares débiles, con energías de unas pocas kcal/mol. En efecto, el estudio de las propiedades de los iones, comenzando por su relación con la molécula neutra de la que procede, la energía de ionización, los estados vibracionales y rotacionales, energías de enlace de Van der Waals entre el ión y una amplia variedad de otras moléculas, sus confórmeros o isómeros y sus reacciones o semi-reacciones químicas están en la raíz de la necesidad de la espectroscopía conocida como PFI-ZEKE, Pulsed Field Ionization-Zero Electron Kinetic Energy. Entre las aplicaciones que requieren estos conocimientos se encuentran la generación de plasmas para la fabricación de semiconductores, memorias magnéticas, etc, así como los sistemas astrofísicos, la ionosfera terrestre, etc. La espectroscopía ZEKE es una evolución de las de fluorescencia inducida por láser, LIF, ionización multifotónica acrecentada por resonancia, REMPI, con uno y dos colores y acoplada a un sistema de tiempo de vuelo, REMPI-TOF-MS, y las espectroscopías de doble resonancia IR-UV y UV-UV. Sus espectros y la ayuda de cálculos ab inicio permite determinar las energías de enlace de complejos de van der Waals en estados fundamental y excitados, identificar confórmeros e isómeros, obtener energías de ionización experimentales aproximadas (100 cm-1) y otras variables de interés. Al igual que con LIF, REMPI y dobles resonancias, es posible utilizar muestras gaseosas, pero los espectros están muy saturados de bandas y su interpretación es difícil o imposible. Se evitan estas dificultades estudiando las moléculas o complejos en expansiones supersónicas, donde la T de los grados de libertad solo alcanzan unos pocos K. Para realizar experimentos de ZEKE hay que utilizar una propiedad recientemente descubierta, que va en contra de lo esperado en otros sistemas físicos y que consiste en que los altos estados Rydberg de átomos, moléculas y sus complejos de van der Waals (o de los iones) tienen tiempos de vida de centenas de ? s. En resumen, el experimento y la espectroscopía ZEKE consiste en excitar un átomo, molécula o cluster sucesivamente a dos estados excitados selectivos de manera que el final sea un estado Rydberg. A continuación se aplica un campo eléctrico variable que lo ioniza y después de un cierto retraso se aplica un campo eléctrico de extracción, tanto para el electrón como para el ión. El espectro de los iones, es un espectro ZEKE. Hay varias alternativas para hacer este último proceso. El estudio de la espectroscopía y propiedades de iones y sus clusters requiere el conocimiento detallado de la espectroscopía de la molécula neutra, los estados Rydberg, de los confórmeros y sus complejos. Todo ello implica el haber estudiado los sistemas por LIF, REMPI y doble resonancia (hole burning IR-UV, UV-UV). Además solo es posible interpretar los resultados y obtener la información contenida en los espectros con ayuda de cálculos cuánticos ab initio. Hasta el momento hemos aplicado tanto el ZEKE como el conjunto de técnicas mencionadas anteriormente, a varias molécula de interés químico general como anilina y sus derivados, así como sus complejos con agua y amoniaco. Sin embargo, el método es muy versátil y puede aplicarse a iones de átomos, iones múltiples, moléculas sencillas y sus clusters así como a sus semi-reacciones. Como ejemplo de uno de estos espectros PFI-ZEKE se presenta aquí el caso del amonibenzonitrilo, ABN y solamente en su estado fundamental. En la conferencia se presentarán espectros ZEKE del ABN y moléculas similares en estados vibracionales intermedios (islas de estabilidad), así como la determinación de potenciales de ionización precisos, energías de enlace de compuestos del ión con varios disolventes y otras propiedades de interés, discutiendo sus resultados.

Castaño, F.; Fernández, J. A.; Basterretxea, A. Longarte. F.; Sánchez Rayo, M. N.; Martínez, R.

376

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)

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 que presenta mas deficiencias en el desarrollo de las competencias. El investigador recomienda disenar e implantar un curriculo basado en competencias y proveer formacion en didactica y procesos de aprendizaje a los profesores.

Rivera Pacheco, Andres

377

Precise regional baseline estimation using a priori orbital information  

NASA Technical Reports Server (NTRS)

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.

Lindqwister, Ulf J.; Lichten, Stephen M.; Blewitt, Geoffrey

1990-01-01

378

A Prognostic Model for the Outcome of Liver Transplantation in Patients With Cholestatic Liver Disease  

PubMed Central

We studied the outcome of 436 patients with primary biliary cirrhosis (PBC) or primary sclerosing cholangitis (PSC) who underwent orthotopic liver transplant (OLT) at three major liver transplant centers, Univariate predictors of outcome included age, Karnofsky score, Child’s class, Mayo risk score, United Network for Organ Sharing (UNOS) status, nutritional status, serum albumin, serum bilirubin, international normalized ratio, and the presence of ascites, encephalopathy, renal failure (serum creatinine > 2 mg/dL), and edema refractory to diuretics. Using these predictors, we developed a four variable mathematical prognostic model to help the liver transplant physician predict the following: 1) the amount of intraoperative blood loss; 2) the number of days in the intensive care unit (ICU); and 3) severe complications after surgery. The model uses age, renal failure, Child’s class, and United Network for Organ Sharing status. This study is the first to model the outcome of liver transplant in patients with a specific etiology of chronic liver disease (PBC or PSC). The model may be used to help select patients for OLT and to plan the timing of their transplantation. PMID:9049217

Ricci, Paola; Therneau, Terry M.; Malinchoc, Michael; Benson, Joanne T.; Petz, Jan L.; Klintmalm, Goran B.; Crippin, Jeffrey S.; Wiesner, Russell H.; Steers, Jeffrey L.; Rakela, Jorge; Starzl, Thomas E.; Dickson, E. Rolland

2010-01-01

379

Report from a forum on US heart allocation policy.  

PubMed

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. PMID:25534656

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

380

Continued influence of preoperative renal function on outcome of orthotopic liver transplant (OLTX) in the US: where will MELD lead us?  

PubMed

Renal function is a component of the Model for End Stage Liver Disease (MELD), We queried the 1999-2004 OPTN/UNOS database to determine whether preoperative renal function remained an important determinant of survival in primary deceased donor liver transplant alone patients (DDLTA) or primary combined kidney liver transplant patients (KLTX). We examined preoperative creatinine, renal replacement therapy (RRT), incidence of KLTX, and patient survival in the 34 months before and after introduction of MELD and performed a multivariate Cox regression analysis of time to death. Preoperative renal function is an independent predictor of survival in DDLTA but not in KLTX. When compared to DDLTA with a preoperative serum creatinine of 0-0.99 mg/dL, patients with serum creatinine from 1-1.99 mg/dL, >2.0 mg/dL, those requiring RRT, and those receiving KLTX had a relative risk of death following transplant of 1.11, 1.58, 1.77, and 1.44 respectively. KLTX requiring RRT had better survival than DDLTA requiring RRT. Since introduction of MELD, KLTX, preoperative creatinine, and number of patients requiring preoperative RRT have increased. Despite this, patient survival following orthotopic liver transplant (OLTX) in the 34 months after introduction of MELD is not different than prior to introduction of MELD. PMID:16939515

Gonwa, T A; McBride, M A; Anderson, K; Mai, M L; Wadei, H; Ahsan, N

2006-11-01

381

Low-cost microcontroller platform for studying lymphatic biomechanics in vitro.  

PubMed

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. PMID:23178036

Kornuta, Jeffrey A; Nipper, Matthew E; Dixon, J Brandon

2013-01-01

382

Installation of a variable-angle spectrometer system for monitoring diffuse and global solar radiation  

NASA Astrophysics Data System (ADS)

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.

Ormachea, O.; Abrahamse, A.; Tolavi, N.; Romero, F.; Urquidi, O.; Pearce, J. M.; Andrews, R.

2013-11-01

383

Heine-Stieltjes correspondence and a new angular momentum projection for many-particle systems  

NASA Astrophysics Data System (ADS)

A new angular momentum projection for systems of particles with arbitrary spins is formulated based on the Heine-Stieltjes correspondence, which can be regarded as the solutions of the mean-field-plus -pairing model in the strong-pairing interaction G?? limit. Properties of the Stieltjes zeros of the extended Heine-Stieltjes polynomials, whose roots determine the projected states, and the related Van Vleck zeros are discussed. An electrostatic interpretation of these zeros is presented. As examples, applications to n nonidentical particles of spin 1/2 and to identical bosons or fermions are made to elucidate the procedure and properties of the Stieltjes zeros and the related Van Vleck zeros. It is shown that the new angular momentum projection for n identical bosons or fermions can be simplified with the branching multiplicity formula of U(N)?O(3) and the special choices of the parameters used in the projection. Especially, it is shown that the solutions for identical bosons can always be expressed in terms of zeros of Jacobi polynomials. However, unlike nonidentical particle systems, the n-coupled states of identical particles are nonorthogonal with respect to the multiplicity label after the projection.

Pan, Feng; Li, Bo; Zhang, Yao-Zhong; Draayer, Jerry P.

2013-09-01

384

EL LENGUAJE EN EL CINE DE JEAN-LUC GODARD Language in Godard’s Cinema  

E-print Network

Uno de los rasgos más característicos del cine de Jean-Luc Godard ha sido su intensa y estrecha relación con el lenguaje y la literatura. A través de su filmografía, la literatura ha constituido una fuente para una nueva creatividad, en la que las referencias operan como un modo de expresión y un vehículo de comunicación con el espectador. El director francés puede considerarse un pionero en el uso de la literatura y de las artes plásticas como un elemento fundamental dentro del cine. Con ello, Godard crea un universo personal, en el que el espectador debe tomar parte activa, interpretando las referencias artísticas contenidas en sus películas. Este artículo se centra en este especial uso del lenguaje durante los inicios de la filmografía de Godard, mostrando ejemplos de ello como una forma de profundizar en su cine. Palabras clave: nouvelle vague, Jean-Luc Godard, cine y literatura, Ana Karina. One of the most characteristics features in Jean-Luc Godard’s cinema has been a narrow and intense relation with language and literature. Throughout his filmography, literature is a source of new creativity; assembled in his films as a way of expression,

Maite Noeno Carballo

385

Richard H. Bolt introduced me to acoustics, and I am still engaged  

NASA Astrophysics Data System (ADS)

I arrived at the MIT Acoustics Laboratory in 1948, and quickly learned from Dick Bolt that U.S. submarines needed coatings to reduce vulnerability via active sonar detection. All who remember Dick will be familiar with his next step: He brought me to Robert Blizzard and A. Wilson Nolle, both then at the Lab, from whom I learned in detail how to measure and then how to understand the dynamic moduli of rubber-like materials. My path, of course, widened to include medical acoustics (under the leadership of Theodore Hueter) and scattering (Phillip Morse and Uno Ingard). Fast-forward to the present. Rubber-like materials are not only in use as submarine coatings to avoid detection by active sonars, but also to reduce noise radiated by submarines. Further, such materials cover submarine acoustic arrays to reduce flow-noise interference with signals received by such arrays. The problem that most engages me today is the stochastic nature of sound propagation in the ocean, a problem that has the practical consequence of degraded sonar performance. In the spirit of Dick, I will present snippets of my current work, with the hope of painting the big picture that he always did so well.

Dyer, Ira

2003-04-01

386

Proton stability in grand unified theories, in strings and in branes  

NASA Astrophysics Data System (ADS)

A broad overview of the current status of proton stability in unified models of particle interactions is given which includes non-supersymmetric unification, SUSY and SUGRA unified models, unification based on extra dimensions, and string-M-theory models. The extra dimensional unification includes 5D and 6D and universal extra dimensional (UED) models, and models based on warped geometry. Proton stability in a wide array of string theory and M theory models is reviewed. These include Calabi-Yau models, grand unified models with Kac-Moody levels k>1, a new class of heterotic string models, models based on intersecting D branes, and string landscape models. The destabilizing effect of quantum gravity on the proton is discussed. The possibility of testing grand unified models, models based on extra dimensions and string-M-theory models via their distinctive modes is investigated. The proposed next generation proton decay experiments, HyperK, UNO, MEMPHYS, ICARUS, LANNDD (DUSEL), and LENA would shed significant light on the nature of unification complementary to the physics at the LHC. Mathematical tools for the computation of proton lifetime are given in the appendices. Prospects for the future are discussed.

Nath, Pran; Fileviez Pérez, Pavel

2007-04-01

387

La Transpiración - Movimiento del Agua a Través de las Plantas  

NSDL National Science Digital Library

La transpiración es la pérdida de agua en forma de vapor por las plantas. El agua es absorbida del suelo por las raíces y transportada en forma líquida por el xilema hacia las hojas. En las hojas, unos pequeños poros permiten que el agua (H2O) escape a la atmósfera en forma de vapor, al tiempo que se permite la entrada de bióxido de carbono (CO2) para la fotosíntesis. De toda el agua absorbida por las plantas, menos del 5% es retenida y utilizada para crecimiento y almacenamiento. En esta lección se explicará porque las plantas pierden tanta agua, la ruta que ésta sigue dentro de la planta, como pudieran las plantas controlar la pérdida excesiva de agua y como las condiciones ambientales influyen en la pérdida de agua por las plantas.

388

Neighborhood Poverty and Racial Disparities in Kidney Transplant Waitlisting  

PubMed Central

Racial disparities persist in the United States renal transplantation process. Previous studies suggest that the distance between a patient's residence and the transplant facility may associate with disparities in transplant waitlisting. We examined this possibility in a cohort study using data for incident, adult ESRD patients (1998 to 2002) from the ESRD Network 6, which includes Georgia, North Carolina, and South Carolina. We linked data with the United Network for Organ Sharing (UNOS) transplant registry through 2005 and with the 2000 U.S. Census geographic data. Of the 35,346 subjects included in the analysis, 12% were waitlisted, 57% were black, 50% were men, 20% were impoverished, 45% had diabetes as the primary etiology of ESRD, and 73% had two or more comorbidities. The median distance from patient residence to the nearest transplant center was 48 mi. After controlling for multiple covariates, distance from patient residence to transplant center did not predict placement on the transplant waitlist. In contrast, race, neighborhood poverty, gender, age, diabetes, hypertension, body mass index, albumin, and the use of erythropoietin at dialysis initiation was associated with waitlisting. As neighborhood poverty increased, the likelihood of waitlisting decreased for blacks compared with whites in each poverty category; in the poorest neighborhoods, blacks were 57% less likely to be waitlisted than whites. This study suggests that improving the allocation of kidneys may require a focus on poor communities. PMID:19339381

Patzer, Rachel E.; Amaral, Sandra; Wasse, Haimanot; Volkova, Nataliya; Kleinbaum, David; McClellan, William M.

2009-01-01

389

Making an Impact: The Importance of Urban Schools in Improving Diversity in Geoscience  

NASA Astrophysics Data System (ADS)

Urban areas are considered to be demographically homogenous with significant proportions of the population consisting of African American and Hispanic students. This demographic is particularly true for New Orleans, LA. However, it is uncommon for urban schools, especially at the high school level, to offer geoscience-based courses. Reform-based classes in geoscience at urban schools can have a dramatic impact on increasing diversity at the professional level. McDonogh 35 Senior High School and Warren Easton Senior High School are urban schools within the Orleans Parish school district that have student populations of more than 95 percent African American. These schools offer courses in Geology and Environmental Science, respectively, that prepare students in geoscience-based curricula. Through collaboration with the University of New Orleans, many of these students have participated in the summer field program and gone on to major in geology or geophysics. In fact, the majority of minority students enrolled at UNO came from these two high schools. These graduates have gone on to exemplary careers in geoscience industry, especially the petroleum industry, and in professional societies. Two graduates from these high schools have recently received Ph.D. in geoscience and two had been elected president of the National Association of Black Geologists and Geophysicists. Clearly, urban schools play an important role in increasing diversity in geoscience. However, collaboration between urban schools and universities is a key element in increasing the participation of underrepresented minorities in geoscience.

Walker, A.; LaFleur, L.; Hall, F. R.; Serpa, L.

2001-05-01

390

Liver transplantation for neonatal hepatitis as compared to the other two leading indications for liver transplantation in children.  

PubMed

Neonatal hepatitis is a syndrome of unknown etiology occurring in children with viral liver disease, as well as children with unidentified disorders of bile salt synthesis and other poorly understood metabolic diseases. It is characterized by jaundice, giant cell hepatitis and rare liver failure necessitating liver transplantation. In the present investigation, the outcome of liver transplantation performed in 16 children with neonatal hepatitis at the investigators' institution was determined from 1 January 1989 to 31 December 1991. The results were compared to those obtained in 288 children transplanted for biliary atresia and 66 children transplanted for recognized metabolic liver disease. The children transplanted for neonatal hepatitis (4.1 +/- 1.3 years) and metabolic liver disease (5.8 +/- 0.6 years) were older than those transplanted for biliary atresia (3.3 +/- 0.2 years) (p < 0.01), but did not differ in terms of sex, ABO type, UNOS status or year in which the transplant procedure was performed. Interestingly, first allograft survival was equal in the children with neonatal hepatitis (74%) and those with metabolic liver disease (74%), but was greater than that for children transplanted for biliary atresia (68%) (p < 0.01). Despite this significant difference in first graft survival, no differences in 5-year survival were seen for the three groups (81% for neonatal hepatitis, 68% for biliary atresia and 79% for metabolic liver disease).(ABSTRACT TRUNCATED AT 250 WORDS) PMID:7699224

Adrian-Casavilla, F; Reyes, J; Tzakis, A; Wright, H I; Gavaler, J S; Lendoire, J; Gordon, R; Starzl, T E; Van Thiel, D H

1994-12-01

391

The optimal hormonal replacement modality selection for multiple organ procurement from brain-dead organ donors.  

PubMed

The management of brain-dead organ donors is complex. The use of inotropic agents and replacement of depleted hormones (hormonal replacement therapy) is crucial for successful multiple organ procurement, yet the optimal hormonal replacement has not been identified, and the statistical adjustment to determine the best selection is not trivial. Traditional pair-wise comparisons between every pair of treatments, and multiple comparisons to all (MCA), are statistically conservative. Hsu's multiple comparisons with the best (MCB) - adapted from the Dunnett's multiple comparisons with control (MCC) - has been used for selecting the best treatment based on continuous variables. We selected the best hormonal replacement modality for successful multiple organ procurement using a two-step approach. First, we estimated the predicted margins by constructing generalized linear models (GLM) or generalized linear mixed models (GLMM), and then we applied the multiple comparison methods to identify the best hormonal replacement modality given that the testing of hormonal replacement modalities is independent. Based on 10-year data from the United Network for Organ Sharing (UNOS), among 16 hormonal replacement modalities, and using the 95% simultaneous confidence intervals, we found that the combination of thyroid hormone, a corticosteroid, antidiuretic hormone, and insulin was the best modality for multiple organ procurement for transplantation. PMID:25565890

Mi, Zhibao; Novitzky, Dimitri; Collins, Joseph F; Cooper, David Kc

2015-01-01

392

Prophylaxis against de novo hepatitis B for liver transplantation utilizing hep B core (+) donors: does hepatitis B immunoglobulin provide a survival advantage?  

PubMed

Donor liver allografts with positive serology for hepatitis B core antibody [HBc (+)] have been increasingly used for liver transplantation. However, the optimal prophylactic regimen to prevent development of de novo hepatitis B has not been determined. To evaluate this, we screened United Network for Organ Sharing (UNOS) Standard Transplant Analysis and Research (STAR) registry data for adult recipients of HBc (+) organs who were HBsAg (-), and evaluated the effects of using prophylactic anti-viral therapies (HBIG and lamivudine) on patient and graft survival. Out of a total cohort of 958 patients transplanted since 2004, 61 received HBIG alone, 116 received lamivudine alone, 66 both, 509 neither and 206 were missing this information. Based on several multivariable Cox regression models, patients receiving HBIG therapy-only were observed to have a statistically significant (approximately 70%) reduction in risk of mortality compared with patients receiving lamivudine-only therapy [HR=0.29, 95% CI (0.10, 0.86), P=0.026], and a nonstatistically significant reduction in risk of graft failure. However, no graft failures were attributed to de novo hepatitis B, suggesting that any improved graft/patient survival possibly associated with HBIG therapy occurs independently of de novo hepatitis B virus (HBV) reduction. While this study cannot prove that HBIG therapy is protective for graft and patient survival after liver transplantation, these findings do highlight the need to further examine and study prophylactic use in recipients of HBc (+) donors. PMID:21401727

Brock, Guy N; Mostajabi, Farida; Ferguson, Nicole; Carrubba, Christopher J; Eng, Mary; Buell, Joseph F; Marvin, Michael R

2011-06-01

393

The Conference Proceedings of the 2003 Air Transport Research Society (ATRS) World Conference, Volume 5  

NASA Technical Reports Server (NTRS)

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.

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

2003-01-01

394

Nuevos escenarios de la migración México-Estados Unidos. Las consecuencias de la guerra antiinmigrante  

PubMed Central

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

MASSEY, Douglas S.; PREN, Karen A.; DURAND, Jorge

2010-01-01

395

Donor Hepatitis C Sero-Status does not Impact Survival in Liver Transplantation.  

PubMed

Background Liver disease caused by hepatitis C virus (HCV) is the main indication for liver transplantation (LT) among adults in the US. Recurrent HCV impairs patient and graft survival after LT. The high prevalence of HCV along with scarce organs has lead to increased utilization of HCV+ organs. We estimated the impact of HCV+ donors on patient and graft survival. Material and Methods We conducted a cohort study of LT recipients age 18 years or older from February 2002 through December 2012 utilizing UNOS data. We evaluated differences in patient characteristics between HCV+ and HCV- recipients. We also compared patient and graft survival between these groups and among HCV+ recipients who received HCV+ versus HCV- donor organs using the Kaplan-Meier estimator and multivariate stratified Cox regression models. Results We identified 59,899 LT recipients. Among those, 1,695 (2.8%) were HCV+ who received HCV+ grafts. HCV+ recipients of HCV- grafts were more likely to be female, hospitalized, in the ICU, on a ventilator, had higher MELD scores, and higher bilirubin. Patient and graft survival at 1, 5, and 10 years in HCV+ recipients was inferior to HCV- recipients, but HCV+ recipients who received HCV+ versus HCV- grafts were equivalent. Multivariate regression revealed multiple variables associated with worse outcomes. Conclusions The use of HCV+ grafts in HCV+ recipients is not associated with worse outcomes. With the increase in HCV+ patients awaiting an organ, more consideration should be given to HCV+ donors. PMID:25608491

Montenovo, Martin I; Dick, Andre A S; Hansen, Ryan N

2015-01-01

396

Scienza dei servizi  

NASA Astrophysics Data System (ADS)

I servizi sono oramai centrali nella vita sociale di ogni Paese. L'aspettativa di ogni attore sociale, sia esso cittadino/utente e/o istituzione, è quella di ricevere da uno scambio che ha alla base un servizio un contributo che si caratterizza per una qualità intrinseca. Il mantenimento di tale promessa richiede all'azienda erogatrice un forte coinvolgimento, nel disegno del servizio, degli utenti ed una capacità di gestione della conoscenza; ciò è particolarmente significativo per quei servizi che si caratterizzano per una forte personalizzazione o complessità progettuale. Disegnare un servizio, metterlo in produzione e gestirne l'erogazione ha una complessità variabile in base al grado di coinvolgimento dei destinati ed alle dimensioni critiche che esprimono le condizioni di fattibilità di un servizio di qualità appropriato alle attese degli utilizzatori. Ugualmente la globalizzazione dell'economia e la scarsità delle risorse ha portato l'attenzione, ai fini della sostenibilità delle condizioni sopra richiamate, di una ricerca di modelli e strumenti che permettano una valutazione e una standardizzazione dei processi di produzione ed erogazione secondo condizioni di economicità. Tali primi e sintetici elementi hanno condotto diversi attori istituzionali, grandi imprese ed università attraverso i loro centri di ricerca, ad una azione di riflessione sul grado di "ingegnerizzazione" dei processi sottesi alla erogazione dei servizi ed in particolare ai servizi che attuano le politiche dei grandi settori di base dell'economia di una Nazione: educazione, sanità, sociale, sviluppo infrastrutture ecc.

Cavenago, Dario; Mezzanzanica, Mario

397

Estudio de distintos modelos de protuberancias solares  

NASA Astrophysics Data System (ADS)

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.

Cirigliano, D.; Rovira, M.; Mauas, P.

398

High-risk age window for mortality in children with cystic fibrosis after lung transplantation.  

PubMed

LTx in children with CF remains controversial. The UNOS database was queried from 1987 to 2013 for CF patients <18 yr of age at time of transplant. PCHR model was used to quantify hazard of mortality. 489 recipients were included in the survival analysis. The hazard function of post-transplant mortality was plotted over attained age to identify age window of highest risk, which was 16-20 yr. Unadjusted PCHR model revealed ages immediately after the high-risk window were characterized by lower hazard of mortality (HR = 0.472; 95% CI = 0.302, 0.738; p = 0.001). After adjusting for potential confounders, the decline in mortality hazard immediately after the high-risk window remained statistically significant (HR = 0.394; 95% CI: 0.211, 0.737; p = 0.004). Hazard of mortality in children with CF after LTx was highest between 16 and 20 yr of attained age and declined thereafter. PMID:25430504

Hayes, Don; McCoy, Karen S; Whitson, Bryan A; Mansour, Heidi M; Tobias, Joseph D

2015-03-01

399

The optimal hormonal replacement modality selection for multiple organ procurement from brain-dead organ donors  

PubMed Central

The management of brain-dead organ donors is complex. The use of inotropic agents and replacement of depleted hormones (hormonal replacement therapy) is crucial for successful multiple organ procurement, yet the optimal hormonal replacement has not been identified, and the statistical adjustment to determine the best selection is not trivial. Traditional pair-wise comparisons between every pair of treatments, and multiple comparisons to all (MCA), are statistically conservative. Hsu’s multiple comparisons with the best (MCB) – adapted from the Dunnett’s multiple comparisons with control (MCC) – has been used for selecting the best treatment based on continuous variables. We selected the best hormonal replacement modality for successful multiple organ procurement using a two-step approach. First, we estimated the predicted margins by constructing generalized linear models (GLM) or generalized linear mixed models (GLMM), and then we applied the multiple comparison methods to identify the best hormonal replacement modality given that the testing of hormonal replacement modalities is independent. Based on 10-year data from the United Network for Organ Sharing (UNOS), among 16 hormonal replacement modalities, and using the 95% simultaneous confidence intervals, we found that the combination of thyroid hormone, a corticosteroid, antidiuretic hormone, and insulin was the best modality for multiple organ procurement for transplantation.

Mi, Zhibao; Novitzky, Dimitri; Collins, Joseph F; Cooper, David KC

2015-01-01

400

Neurobiología del autismo y TDAH mediante técnicas de neuroimagen: divergencias y convergencias  

PubMed Central

En el área clínica algunos síntomas del trastorno por déficit de atención e hiperactividad (TDAH), se presentan en los pacientes con trastorno del espectro autista (TEA). Se ha demostrado que existen alteraciones en circuitos cerebrales que impactan en fallas cognitivas y de comportamiento específicas de cada uno de estos trastornos. Sin embargo, han sido poco estudiados los correlatos cerebrales que hay detrás tanto de las similitudes como de las diferencias sintomatológicas. En la presente revisión se analizaron los estudios meta-analíticos existentes estructurales y funcionales en TDAH y TEA. Por un lado, se observaron convergencias en circuitos como el dorsal atencional, de funciones ejecutivas, visual, somatomotor y circuito de activación por defecto. Estas similitudes posiblemente explican las manifestaciones comórbidas entre los trastornos como la falla en la integración de información, motricidad fina y procesos atencionales específicos. Por otro lado, específicamente en el TDAH se observan déficits en el circuito de recompensa y ventral atencional, sistemas involucrados en la medición de efectos de reforzamiento y monitoreo atencional. En TEA los circuitos más afectados fueron los implicados en procesos de cognición social y lenguaje. En conclusión, existen correlatos neuronales en TEA que explican las manifestaciones clínicas tanto convergentes como divergentes presentes en TDAH. PMID:23897144

Proal, Erika; Olvera, Jorge González; Blancas, Aurea S.; Chalita, Pablo J.; Castellanos, F. Xavier

2013-01-01

401

Desarrollo de la Escala sobre el Estigma Relacionado con el VIH/SIDA para Profesionales de la Salud mediante el uso de métodos mixtos123  

PubMed Central

El estigma relacionado con el VIH/SIDA continúa siendo un obstáculo para la prevención primaria y secundaria del VIH. Las consecuencias para las personas que viven con la enfermedad han sido muy documentadas y continúan siendo una gran preocupación para las personas que proveen servicios de salud y para aquellas que investigan el tema. Estas consecuencias son preocupantes cuando el estigma emana de profesionales de la salud porque se puede limitar el acceso a los servicios. Uno de los principales obstáculos para la investigación del estigma relacionado con el VIH en Puerto Rico es la falta de instrumentos cuantitativos para evaluar las manifestaciones del estigma entre profesionales de la salud. El objetivo principal de este estudio fue desarrollar y probar las propiedades psicométricas de una escala sobre el estigma relacionado con el VIH/SIDA culturalmente apropiada para personas que proveen servicios de salud puertorriqueñas y desarrollar una versión corta de la escala que pudiera usarse en escenarios clínicos con tiempo limitado. El instrumento desarrollado estuvo basado en evidencia cualitativa recopilada entre profesionales y estudiantes de profesiones de la salud puertorriqueños/as (n=80) y administrado a una muestra de 421 profesionales de la salud en adiestramiento. La escala contenía 12 dimensiones del estigma relacionado con el VIH/SIDA. El análisis cuantitativo corroboró 11 de ellas, teniendo como resultado un instrumento con validez y confiabilidad satisfactoria. Estas dimensiones, a su vez, fueron subcomponentes de un factor de estigma general superior. PMID:20333258

Varas-Díaz, Nelson; Neilands, Torsten B.; Guilamo-Ramos, Vincent; Cintrón Bou, Francheska N.

2009-01-01

402

High-performance membrane chromatography of supercoiled plasmid DNA.  

PubMed

Membrane adsorbers are well established in protein chromatography. The present paper investigated for the first time the behavior of polynucleotides on these stationary phases, taking a 7.2-kb predominantly supercoiled plasmid as example. Gradient and isocratic elution was studied. In contrast to protein high-performance membrane chromatography (HPMC), isocratic elution is possible in DNA chromatography. In the case of gradient elution, much higher salt concentrations can be used in the starting buffer. Under optimized conditions, both approaches led to a splitting of the single plasmid peak into three maximums, which corresponded to the three-albeit isolated-bands in the agarose gel. Presumably the three fractions were supercoiled, nicked, and open circular plasmid DNA. Linearization of the plasmid lowered the adsorption energy, and the linearized plasmid eluted earlier than the nonlinearized one. The HPMC experiments were compared to similar ones performed using a conventional packed-bed anion-exchange column (BioScale Q2, 7 x 52 mm, 10-micron porous particles) and a novel monolithic-type anion-exchange column (UNO Q1, 7 x 35 mm). The results and characteristic differences observed in these experiments were interpreted in the light of the newly developed theory of HPMC. PMID:9726161

Giovannini, R; Freitag, R; Tennikova, T B

1998-08-15

403

Supernova Relic Electron Neutrinos and anti-Neutrinos in future Large-scale Observatories  

E-print Network

We investigate the signal from supernova relic neutrinos in future large scale observatories, such as MEMPHYS (UNO, Hyper-K), LENA and GLACIER, at present under study. We discuss that complementary information might be gained from the observation of supernova relic electron anti-neutrinos and neutrinos using the scattering on protons on one hand, and on nuclei such as oxygen, carbon or argon on the other hand. When determining the relic neutrino fluxes we also include, for the first time, the coupling of the neutrino magnetic moment to magnetic fields within the core-collapse supernova. We present numerical results on both the relic electron neutrino and anti-neutrino fluxes and on the number of events for electron neutrinos on carbon, oxygen and argon, as well as electron anti-neutrinos on protons, for various oscillation scenarios. The observation of supernova relic neutrinos might provide us with unique information on core-collapse supernova explosions, on the star formation history and on neutrino properties, that still remain unknown.

C. Volpe; J. Welzel

2007-11-20

404

Predictive Value of the Model of End-Stage Liver Disease in Cirrhotic Patients with and without Spontaneous Bacterial Peritonitis  

PubMed Central

Objective. We aimed to assess the predictive value of the model of end-stage liver disease (MELD) in hospitalized cirrhotic patients with and without spontaneous bacterial peritonitis (SBP) and fatal outcome. Methods. A cross-sectional study included 256 consecutive patients (199 men and 57 women) diagnosed with cirrhosis and ascites who were hospitalized at the University Hospital Center in Tirana from January 2008 to December 2009. SBP was defined as a neutrophil count of ?250?cells/mm3 in ascitic fluid. MELD score was based on laboratory parameters determined by UNOS Internet site MELD calculator. Results. In multivariable-adjusted logistic regression models controlling for age, sex, diabetes, and etiology, there was evidence of a positive association of SBP with MELD score: the odds ratio (OR) for SBP for one unit increment of MELD score was 1.06 (95% Cl = 1.02–1.09). MELD score was significantly higher in fatal cases than nonfatal patients (mean age-adjusted score was 32.7 versus 18.4 overall; 34.8 versus 18.0 in SBP patients, and 32.0 versus 18.5 in non-SBP patients; all P < 0.001). Conclusions. In this Albanian sample of hospitalized cirrhotic patients, MELD score was confirmed as a significant predictor of both SBP and fatal outcome. PMID:22474442

Kraja, Bledar; Sina, Marsela; Mone, Iris; Pupuleku, Fatjona; Babameto, Adriana; Prifti, Skerdi; Burazeri, Genc

2012-01-01

405

Predictive Value of the Model of End-Stage Liver Disease in Cirrhotic Patients with and without Spontaneous Bacterial Peritonitis.  

PubMed

Objective. We aimed to assess the predictive value of the model of end-stage liver disease (MELD) in hospitalized cirrhotic patients with and without spontaneous bacterial peritonitis (SBP) and fatal outcome. Methods. A cross-sectional study included 256 consecutive patients (199 men and 57 women) diagnosed with cirrhosis and ascites who were hospitalized at the University Hospital Center in Tirana from January 2008 to December 2009. SBP was defined as a neutrophil count of ?250?cells/mm(3) in ascitic fluid. MELD score was based on laboratory parameters determined by UNOS Internet site MELD calculator. Results. In multivariable-adjusted logistic regression models controlling for age, sex, diabetes, and etiology, there was evidence of a positive association of SBP with MELD score: the odds ratio (OR) for SBP for one unit increment of MELD score was 1.06 (95% Cl = 1.02-1.09). MELD score was significantly higher in fatal cases than nonfatal patients (mean age-adjusted score was 32.7 versus 18.4 overall; 34.8 versus 18.0 in SBP patients, and 32.0 versus 18.5 in non-SBP patients; all P < 0.001). Conclusions. In this Albanian sample of hospitalized cirrhotic patients, MELD score was confirmed as a significant predictor of both SBP and fatal outcome. PMID:22474442

Kraja, Bledar; Sina, Marsela; Mone, Iris; Pupuleku, Fatjona; Babameto, Adriana; Prifti, Skerdi; Burazeri, Genc

2012-01-01

406

Report of depressive symptoms on waiting list and mortality after liver and kidney transplantation: a prospective cohort study  

PubMed Central

Background Little research has explored pre-transplantation psychological factors as predictors of outcome after liver or kidney transplantation. Our objective is to determine whether report of depressive symptoms on waiting list predicts outcome of liver and kidney transplantation. Methods Patients on waiting list for liver or kidney transplantation were classified for report or non-report of depressive symptoms on waiting list. 339 were transplanted 6 months later on average, and followed prospectively. The main outcome measures were graft failure and mortality 18 months post-transplantation. Results Among the 339 patients, 51.6% reported depressive symptoms on waiting list, 16.5% had a graft failure and 7.4% died post-transplantation. Report of depressive symptoms on waiting list predicted a 3 to 4-fold decreased risk of graft failure and mortality 18-months post-transplantation, independently from age, gender, current cigarette smoking, anxiety symptoms, main primary diagnosis, UNOS score, number of comorbid diagnoses and history of transplantation. Data were consistent for liver and kidney transplantations. Other baseline predictive factors were: for graft failure, the main primary diagnosis and a shorter length since this diagnosis, and for mortality, older age, male gender and the main primary diagnosis. Conclusion Further studies are needed to understand the underlying mechanisms of the association between report of depressive symptoms on waiting list and decreased risk of graft failure and mortality after transplantation. PMID:22103911

2011-01-01

407

Reversible dioxygen binding and arene hydroxylation reactions: Kinetic and thermodynamic studies involving ligand electronic and structural variations  

PubMed Central

Copper-dioxygen interactions are of intrinsic importance in a wide range of biological and industrial processes. Here, we present detailed kinetic/thermodynamic studies on the O2-binding and arene hydroxylation reactions of a series of xylyl-bridged binuclear copper(I) complexes, where the effects of ligand electronic and structural elements on these reactions are investigated. Ligand 4-pyridyl substituents influence the reversible formation of side-on bound ?-?2:?2-peroxodicopper(II) complexes, with stronger donors leading to more rapid formation and greater thermodynamic stability of product complexes [CuII2(RXYL)(O22?)]2+. An interaction of the latter with the xylyl ?-system is indicated. Subsequent peroxo electrophilic attack on the arene leads to C–H activation and oxygenation with hydroxylated products [CuII2(RXYLO2?)(?OH)]2+ being formed. A related unsymmetrical binucleating ligand was also employed. Its corresponding O2-adduct [CuII2(UN)(O22?)]2+ is more stable, but primarily because the subsequent decay by hydroxylation is in a relative sense slower. The study emphasizes how ligand electronic effects can and do influence and tune copper(I)–dioxygen complex formation and subsequent reactivity. PMID:23420124

Karlin, Kenneth D.; Zhang, Christiana Xin; Rheingold, Arnold L.; Galliker, Benedikt; Kaderli, Susan; Zuberbühler, Andreas D.

2012-01-01

408

Semi-discrete approximations to nonlinear systems of conservation laws; consistency and L(infinity)-stability imply convergence  

NASA Technical Reports Server (NTRS)

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).

Tadmor, Eitan

1988-01-01

409

Survival in children on extracorporeal membrane oxygenation at the time of lung transplantation.  

PubMed

Limited data exist on ECMO at the time of LTx in children. The UNOS database was queried from 2000 to 2013 for pediatric lung transplant recipients (<18 yr) to assess post-transplant survival of patients on ECMO at the time of LTx. Of 587 pediatric recipients with 17 on ECMO, 585 were used for univariate and Kaplan-Meier function analysis, 535 for multivariate Cox models, and 24 for propensity score matching. Univariate Cox (HR = 1.777; 95% CI: 0.658, 4.803; p = 0.257) and Kaplan-Meier function (log-rank test: chi-square (df = 1): 1.32, p = 0.250) analyses did not identify a survival difference between ECMO and non-ECMO, while multivariate Cox models (HR = 1.821; 95% CI: 0.654, 5.065; p = 0.251) did not demonstrate an increased risk for death. Propensity score matching analysis (HR = 1.500; 95% CI: 0.251, 8.977; p = 0.657) also failed to demonstrate a significantly increased hazard ratio. Using a contemporary cohort of pediatric lung transplant recipients, the use of ECMO at the time of lung transplantation did not negatively impact survival. PMID:25425268

Hayes, Don; McConnell, Patrick I; Tobias, Joseph D; Whitson, Bryan A; Preston, Thomas J; Yates, Andrew R; Galantowicz, Mark

2015-02-01

410

[Leprosy--a stigma in the 21st century].  

PubMed

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. PMID:21296733

Falus, Orsolya

2011-02-13

411

Disparidad en Salud: Un Fenómeno Multidimensional  

PubMed Central

La Disparidad en Salud (DS) ha llamado la atención pública desde el siglo pasado, ha sido analizada desde diversas perspectivas y enfoques incluso variados términos han sido utilizados como sinónimos pudiendo llevar a confusión e inequidades al momento de su operacionalización. Sin embargo es importante señalar que las publicaciones coinciden en que la DS es uno de las determinantes esenciales a considerar al momento de definir pol?ticas públicas. El propósito de esta publicación es analizar la disparidad en salud incorporando; a) los aspectos claves de su conceptualización, b) la evolución histórica del concepto, c) las estrategias que se han generado para enfrentarla, d) los factores considerados determinantes, y e) los aspectos éticos y la contribución de la investigación en la disminución de la DS. Health Disparities (HD) have been at the center of public attention for the past century. They have been analyzed from diverse perspectives utilizing various terms as synonyms that can lead to confusion and inequality at the moment of operationalization. Despite this, it is important to indicate that publications agree that HD are essential determinants that must be considered in the definition of public policy. The objective of this publication is to analyze health disparities incorporating; (a) key aspects in their conceptualization, (b) the historic evolution of the concept, (c) strategies that have been generated to confront them, (d) determining factors, and (e) ethical aspects and the contribution of research in decreasing HD. PMID:22581053

Urrutia, Maria-Teresa; Cianelli, Rosina

2012-01-01

412

Low-cost microcontroller platform for studying lymphatic biomechanics in vitro  

PubMed Central

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

Kornuta, Jeffrey A.; Nipper, Matthew E.; Dixon, J. Brandon

2012-01-01

413

Tumores neonatales y malformaciones congénitas  

PubMed Central

Introducción La asociación entre tumores y malformaciones congénitas está bien establecida, pero no existen datos exclusivos en el período neonatal y se desconocen los mecanismos subyacentes que generan dicha relación. Objetivos Este trabajo tiene dos objetivos: primero, analizar la frecuencia de los tumores neonatales asociados a malformaciones congénitas, y segundo, comentar las posibles hipótesis etiopatogénicas de la relación entre ambas entidades. Materiales y método Estudio retrospectivo de las historias clínicas de los tumores neonatales, en el Hospital Universitario Materno- Infantil La Fe de Valencia, desde enero de 1990 hasta diciembre de 1999. Selección y descripción de las variedades histológicas asociadas a malformaciones congénitas. Éstas se han agrupado siguiendo los criterios de la Clasificación Internacional de Enfermedades CIE-9, códigos 740.0–759.9. Revisión sistemática bibliográfica de los últimos 25 años, obtenida del Medline, Cancerlit, Index Citation Science y Embase. El perfil de búsqueda utilizado fue la combinación de “neonatal/congenital-tumors/cancer/neoplasms” y “congenital malformations/birth defects”. Resultados Se identificaron 72 tumores neonatales (2,8 % del total de tumores pediátricos diagnosticados en dichos años) y 15 de ellos (20,8 %) asociados a malformaciones congénitas, enfermedades o síndromes congénitos. Las asociaciones entre tumores neonatales y malformaciones congénitas fueron las siguientes: a) angioma en 3 pacientes: con dos cardiopatías congénitas y una atresia de coanas-laringomalacia; b) neuroblastoma en 2 pacientes: uno con riñón en herradura y anomalías vertebrales, y otro con cardiopatía congénita; c) teratoma en 2 pacientes: uno con fisura palatina y anomalías vertebrales, y otro con metatarso varo; d) tumor del sistema nervioso central en un paciente con hernia de Bochdaleck; e) tumor cardíaco en 4 pacientes con esclerosis tuberosa; f) leucemia aguda en un paciente con síndrome de Down y cardiopatía congénita; g) tumor renal en un caso con hidrocefalia triventricular, y h) tumor adrenal en un caso con hemihipertrofia. En la bibliografía específica, las publicaciones engloban tumores de diferentes épocas pediátricas y sin unanimidad de criterios para clasificar las malformaciones congénitas. Apenas existen datos en el período neonatal y la asociación entre ambas entidades se obtiene de registros de instituciones médicas. La prevalencia oscila entre el 15 y el 31,6 %. Las hipótesis etiopatogénicas que explican la asociación entre tumores neonatales y malformaciones congénitas están basadas en las exposiciones prenatales (preconcepcionales y transplacentarias) a factores de riesgo potencialmente mutagénicos y carcinogénicos. Conclusiones Probablemente, los tumores neonatales se asocian con mayor frecuencia a malformaciones congénitas que los tumores diagnosticados en épocas posteriores de la vida. Para conocer la prevalencia real de la asociación entre tumores neonatales y malformaciones congénitas, es necesario unificar los criterios de inclusión y definición de ambas entidades. La obtención de una minuciosa historia medioambiental en todos los tumores neonatales asociados a malformaciones congénitas, donde se detallen y registren todos los factores de riesgo constitucionales y ambientales, es fundamental para mejorar nuestros escasos conocimientos de los mecanismos prenatales subyacentes y avanzar en su prevención. PMID:18559198

Tornero, O. Berbel; García, J.A. Ortega; Tortajada, J. Ferrís i; Castell, J. García; Colomer, J. Donat i; Soldin, O.P.; Soler, J.L. Fuster

2013-01-01

414

Selective use of expanded criteria donors for renal transplantation with good results.  

PubMed

Increasing demand for renal transplants has stimulated expanded criteria for the use of deceased donors. Recently an official category of "Expanded Criteria Donors" (ECD) was designated by UNOS. This category included any deceased donor (1) greater than age 60 years or (2) age 50 to 59 years with any two of: (a) creatinine greater than 1.5 mg/dL (b) cerebrovascular accident cause of death, or (c) hypertension history. It has been anticipated that at 3 years, 70% of ECD kidneys with serum creatinine greater than 1.5 would be lost. We reviewed our experience with the use of this type of kidney prior to the era of officially designated ECD. Survival rates and serum creatinines were compared to standard criteria donor recipients for the same time period whose donor was greater than 50 years of age and correlated with biopsies. From 1996 to 2003, 341 deceased donor kidneys were transplanted at our center. Of these, 37 were ECD kidneys and 46 were standard criteria donors kidneys. Four pretransplant biopsies had greater than 20% sclerosed glomeruli. Four donors had 0% to 25% arteriosclerosis pretransplant; on postperfusion biopsy, eight had 0% to 25% arteriosclerosis, while three had 25% to 50%. The mean donor age was 61 years; mean recipient age was 54 years; recipient sex was 57% male, and 54% of the recipients were African-American. At 1, 2, and 3 years posttransplant, there was no significant difference between the two groups in serum creatinine, graft survival, or patient survival. Despite using ECD donors, good long-term function can be obtained, particularly if selectivity is exercised. PMID:17175280

Greenstein, S M; Schwartz, G; Schechner, R; Pullman, J; Jackness, C; Tellis, V

2006-12-01

415

Lagrangian statistics of light particles in turbulence  

NASA Astrophysics Data System (ADS)

We study the Lagrangian velocity and acceleration statistics of light particles (micro-bubbles in water) in homogeneous isotropic turbulence. Micro-bubbles with a diameter db = 340 ?m and Stokes number from 0.02 to 0.09 are dispersed in a turbulent water tunnel operated at Taylor-Reynolds numbers (Re?) ranging from 160 to 265. We reconstruct the bubble trajectories by employing three-dimensional particle tracking velocimetry. It is found that the probability density functions (PDFs) of the micro-bubble acceleration show a highly non-Gaussian behavior with flatness values in the range 23 to 30. The acceleration flatness values show an increasing trend with Re?, consistent with previous experiments [G. Voth, A. La Porta, A. M. Crawford, J. Alexander, and E. Bodenschatz, "Measurement of particle accelerations in fully developed turbulence," J. Fluid Mech. 469, 121 (2002)], 10.1017/S0022112002001842 and numerics [T. Ishihara, Y. Kaneda, M. Yokokawa, K. Itakura, and A. Uno, "Small-scale statistics in highresolution direct numerical simulation of turbulence: Reynolds number dependence of one-point velocity gradient statistics," J. Fluid Mech. 592, 335 (2007)], 10.1017/S0022112007008531. These acceleration PDFs show a higher intermittency compared to tracers [S. Ayyalasomayajula, Z. Warhaft, and L. R. Collins, "Modeling inertial particle acceleration statistics in isotropic turbulence," Phys. Fluids. 20, 095104 (2008)], 10.1063/1.2976174 and heavy particles [S. Ayyalasomayajula, A. Gylfason, L. R. Collins, E. Bodenschatz, and Z. Warhaft, "Lagrangian measurements of inertial particle accelerations in grid generated wind tunnel turbulence," Phys. Rev. Lett. 97, 144507 (2006)], 10.1103/PhysRevLett.97.144507 in wind tunnel experiments. In addition, the micro-bubble acceleration autocorrelation function decorrelates slower with increasing Re?. We also compare our results with experiments in von Kármán flows and point-particle direct numerical simulations with periodic boundary conditions.

Mercado, Julián Martínez; Prakash, Vivek N.; Tagawa, Yoshiyuki; Sun, Chao; Lohse, Detlef; (International CollaborationTurbulence Research)

2012-05-01

416

Integrated miniature fluorescent probe to leverage the sensing potential of ZnO quantum dots for the detection of copper (II) ions.  

PubMed

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. PMID:24148438

Ng, Sing Muk; Wong, Derrick Sing Nguong; Phung, Jane Hui Chiun; Chin, Suk Fun; Chua, Hong Siang

2013-11-15

417

Purification of RanGDP, RanGTP, and RanGMPPNP by ion exchange chromatography.  

PubMed

Ran is a small GTPase that cycles between a guanosine diphosphate (GDP)-bound form (RanGDP) and a guanosine triphosphate (GTP)-bound form (RanGTP) and plays important roles in nuclear transport and mitosis. For studies of Ran function and its interactions with partner proteins, pure RanGDP and RanGTP complexes are critical. Ran complexed with the nonhydrolyzable GTP analog, GMPPNP (RanGMPPNP), is used instead of RanGTP when inhibition of hydrolysis is required. In this study, we demonstrate that the binding of Ran to a UNO Q ion exchange column is remarkably sensitive to small shifts in MgCl(2) concentration, and we use this property to purify recombinant RanGTP, RanGMPPNP, and RanGDP complexes. At 10 mM MgCl(2), Ran was found predominantly in the flow-through and, thus, was separated from the vast majority of bacterial proteins. After reducing the concentration of MgCl(2) to 5 mM, further purification of RanGTP, RanGMPPNP, and RanGDP was achieved by loading onto ion exchange columns and elution with an NaCl gradient. Purity of the resulting preparations was confirmed by releasing the bound nucleotide and checking it against a known nucleotide by high-performance liquid chromatography (HPLC). To further confirm the purity and function of the Ran preparations, appropriate protein-binding, enzymatic, and nuclear import assays were carried out. These methods should facilitate studies of cellular processes involving Ran by providing pure functional Ran-nucleotide complexes. PMID:15351280

Bibak, Niloufar; Paul, Rachelle M J; Freymann, Douglas M; Yaseen, Nabeel R

2004-10-01

418

Long-term outcome of kidney transplantation from elderly living and expanded criteria deceased donors.  

PubMed

Abstract The imbalance between organ demand and supply causes the increasing use of suboptimal donors. The aim of this study is to investigate the survival and allograft function of kidney transplantation from standard (SLD) and elderly living (ELD), standard criteria (SCDD) and expanded criteria deceased (ECDD) donors. All patients transplanted from 1997 to 2005 were investigated according to the donor characteristics. Data were collected retrospectively during the 83.4?±?43.1 months of follow-up period. ELD was defined as donor age ?60 years. ECDD was defined as UNOS criteria. A total of 458 patients were divided into four groups: SLD (n:191), ELD (n:67), SCDD (n:154), and ECDD (n:46). Seven-year death-censored graft survival in SLD, ELD, SCDD, and ECDD were 81.6%, 64.8%, 84.7%, and 68.3%, respectively (p?=?0.003). The death-censored graft survival in ELD group was lower than in SLD (p?=?0.007) and SCDD (p?=?0.007) groups, while in ECDD group it was lower than in SCDD group (p?=?0.026). Patient survival was similar. In ECDD group, 83% of total deaths occurred within the first 3 years, mainly due to infections (66.6%) (p?

Tanr?sev, Mehmet; Ho?co?kun, Cüneyt; A?ç?, Gülay; Sözbilen, Murat; F?rat, Ozgür; Ertilav, Muhittin; Ozkahya, Mehmet; Töz, Hüseyin

2014-12-01

419

XVII Sesión VII  

E-print Network

In this paper we present a new technique, which reduces amplifier intermodulation. It is shown that the third order intermodulation products generated by an amplifier can be reduced by adding a new parallel branch which generates an IMD(3) of the same amplitude and opposite polarity than the main branch. This paper also shows that third order intermodulation can be reduced by more than 30 dB in the parallel amplifier using a Wilkinson type divider and an 180º Hybrid combiner. 1. INTRODUCCIÓN El empleo de transmisores lineales se ha convertido en una necesidad creciente en los sistemas de comunicaciones modernos, debido al empleo de técnicas multiportadora, por un lado y, por otro, al uso de modulaciones más eficientes. Además los servicios multimedia requieren anchos de banda muy grandes, por lo que se necesita un comportamiento lineal en banda ancha. A todo esto hay que sumar que los equipos operados con baterías como es el caso de los terminales móviles, requieren unos niveles de eficiencia bastante elevados. En este artículo, proponemos un nuevo método de linealización que permite minimizar la distorsión de intermodulación de tercer orden (IMD(3)) para transistores de efecto de campo (FET), añadiendo una nueva rama paralela con un FET que se encuentre adecuadamente polarizado. 2. ANÁLISIS TEÓRICO La corriente de drenador de un FET puede aproximarse por un desarrollo en serie alrededor del punto de polarización en el que se está trabajando. Aunque la capacidad puerta-fuente (C gs) y la resistencia drenador-fuente (g ds) son fuentes significativas de intermodulación, para nuestro análisis se consideró que la no linealidad dominante era la fuente de corriente de drenador (I d), además puesto que las no linealidades causadas por la variación en la tensión en puerta son las más influyentes, se puede aproximar la corriente de drenador por la siguiente expresión: dI id dV = g 1 d I 2 d

Simposium Nacional De La Unión; Científica Internacional De Radio; Tercer Orden; José María; Agüero San Emeterio; Lorena Cabria De Juan; Tomás Fernández Ibáñez; Carmen Gómez Fernández; José Luis; García García

420

First record of the polychaete Ficopomatus uschakovi (Pillai, 1960) (Annelida, Serpulidae) in the Colombian Caribbean, South America  

PubMed Central

Abstract The genus Ficopomatus (Serpulidae) consists of sessile, tubicolous polychaete annelid worms that may colonize a diversity of substrata, and tolerate considerable variations in salinity. Thus, members of this genus, including Ficopomatus uschakovi, in some cases are exotic and maybe invasive. The purpose of our research was to collect and identify marine organisms associated with the submerged roots of mangrove trees in the Gulf of Urabá, Colombian Caribbean, South America. Within the Gulf, there is a well-developed forest of the Red Mangrove, Rhizophora mangle, along the margins of El Uno Bay. We sampled the roots of R. mangle from five stations of the bay, and we identified specimens of F. uschakovi from each of those stations. Ficopomatus uschakovi was found to be more abundant in regions of the bay that exhibit the lowest salinity. Based on a morphological comparison of the present specimens with the original species description, revised descriptions, and other records from the Indo-West Pacific, Mexican Pacific, and Venezuelan and Brazilian Caribbean, we suggest that F. uschakovi has a broader geographical distribution. Furthermore, because of this broad distribution, and the observed tolerance for low salinity in our study, we also suggest that F. uschakovi is a euryhaline species. It is also likely that F. uschakovi will be found in other localities in the Gulf of Urabá, and in other regions of the Colombian Caribbean. Thus, this record extends the distribution of the species to the Colombian Caribbean, giving the species a continuous distribution across the northern coast of South America. PMID:24493951

Arteaga-Flórez, Catalina; Fernández-Rodríguez, Vanessa; Londoño-Mesa, Mario H.

2014-01-01

421

Simultaneous thoracic and abdominal transplantation: can we justify two organs for one recipient?  

PubMed

Simultaneous thoracic and abdominal (STA) transplantation is controversial because two organs are allocated to a single individual. We studied wait-list urgency, and whether transplantation led to successful outcomes. Candidates and recipients for heart-kidney (SHK), heart-liver (SHLi), lung-liver (SLuLi) and lung-kidney (SLuK) were identified through the United Network for Organ Sharing (UNOS) and outcomes were compared to single-organ transplantation. Since 1987, there were 1801 STA candidates and 836 recipients. Wait-list survival at 1- and 3 years for SHK (67.4%, 40.8%; N = 1420), SHLi (65.7%, 43.6%; N = 218) and SLuLi (65.7%, 41.0%; N = 122), was lower than controls (p < 0.001), whereas for SLuK (65.0%, 51.6%; N = 41) it was comparable (p = 0.34). All STA groups demonstrated similar 1- and 5 years posttransplant survival to thoracic controls. Compared to abdominal controls, 1- and 5 years posttransplant survival in SHK (85.3%, 74.0%; N = 684), SLuLi (75.5%, 59.0%; N= 42) and SLuK (66.7%, 55.6%; N = 18) was decreased (p < 0.01), but SHLi (85.9%, 74.3%; N = 92) was comparable (p = 0.81). In summary, STA candidates had greater risk of wait-list mortality compared to single-organ candidates. STA outcomes were similar to thoracic transplantation; however, outcomes were similar to abdominal transplantation for SHLi only. Although select patients benefit from STA, risk-exposure variables for decreased survival should be identified, aiming to eliminate futile transplantation. PMID:23718142

Wolf, J H; Sulewski, M E; Cassuto, J R; Levine, M H; Naji, A; Olthoff, K M; Shaked, A; Abt, P L

2013-07-01

422

[Natural regeneration response in mangroves of the gulf of Urabá (Colombia) to the environmental and intra-annual climate variability].  

PubMed

The natural regeneration process allows the mangrove forests remain over time. Both, biological and physical factors can affect the establishment and early stages along the development of trees. This study examined the response of natural regeneration of mangroves in the Turbo River delta and El Uno bay (Urabá Gulf, Colombia) to intra-annual environmental variability. We quantified mortality, survival and recruitment of seedlings of three mangrove species, seasonally during one year, in 72 semi-permanent sub-plots of 1 m2. In the sub-plots, the total height and the diameter at the base of the stem of all mangrove seedlings with basal diameter less than 2.5cm were measured. Damage by herbivores was also recorded to each seedling. While Laguncularia racemosa recorded the highest rates of mortality, Rhizophora mangle showed the highest survival rate during the study period, although Avicennia germinans dominated the natural regeneration. Through a Redundancy Analysis these processes were associated to environmental variables such as: Direct Site Factor-DSF (sunlight), sediments input rate, herbivory, distances from mangroves to the river, to inner lakes, and to the coastline. These variables explained 43% of the natural regeneration variation; sedimentation rate was the most important variable, while light was very representative for the R. mangle survival. Based on historical records of precipitation, Turbo River flow rate and associated sediment loads, it was established that during the highest precipitation peak, the survival of all species decreases and during the dry season, when the conditions of flooding and sediments input were lower, it was improved. The results indicated that the sediments input rates and sunlight play an important role in the survival of natural regeneration of evaluated mangrove species. PMID:24027935

Hoyos, Róssalyn; Urrego, Ligia Estela; Lema, Alvaro

2013-09-01

423

An Arduino Investigation of Simple Harmonic Motion  

NASA Astrophysics Data System (ADS)

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.

Galeriu, Calin; Edwards, Scott; Esper, Geoffrey

2014-03-01

424

Isolation and characterization of Salmonella enterica in day-old ducklings in Egypt.  

PubMed

Importing day-old ducklings (DOD) unknowingly infected with non-typhoid Salmonella (NTS) may be associated with disease risk. Domestic and international trade may enhance this risk. Salmonella enterica serovars, their virulence genes combinations and antibiotic resistance, garner attention for their potentiality to contribute to the adverse health effects on populations throughout the world. The aim of this study was to estimate the risk of imported versus domestic DOD as potential carriers of NTS. The results confirm the prevalence of salmonellosis in imported ducklings was 18·5% (25/135), whereas only 12% (9/75) of cases were determined in the domestic ducklings. Fourteen serovars (Salmonella enteritidis, Salmonella kisii, Salmonella typhimurium, Salmonella gaillac, Salmonella uno, Salmonella eingedi, Salmonella shubra, Salmonella bardo, Salmonella inganda, Salmonella kentucky, Salmonella stanley, Salmonella virchow, Salmonella haifa, and Salmonella anatum) were isolated from the imported ducklings, whereas only S. enteritidis, S. typhimurium, S. virchow, and S. shubra were isolated from the domestic ducklings. The isolated Salmonella serovars were 100% susceptible to only colistin sulphate and 100% resistant to lincomycin. The 14 Salmonella serovars were screened for 11 virulence genes (invA, avrA, ssaQ, mgtC, siiD, sopB, gipA, sodC1, sopE1, spvC, and bcfC) by PCR. The invA, sopB, and bcfC genes were detected in 100% of the Salmonella serovars; alternatively, the gipA gene was absent in all of the isolated Salmonella serovars. The 11 virulent genes were not detected in either of S. stanley or S. haifa serovars. The results confirm an association between antibiotic resistance and virulence of Salmonella in the DOD. This study confirms the need for a country adherence to strict public health and food safety regimes. PMID:24548159

Osman, Kamelia M; Marouf, Sherif H; Zolnikov, Tara R; AlAtfeehy, Nayerah

2014-01-01

425

Effect of different artificial tears against desiccation in cultured human epithelial cells  

PubMed Central

Summary Background A large number of artificial tears is widely used to treat dry eye symptoms. To test the efficacy of these drugs independent of individual parameters in vitro models are required. As described previously, we employed a reproducible in vitro cell culture system to evaluate the desiccation protection capability of some artificial tears. In the present paper data is presented of another set of pharmaceutical agents. Material/Methods Conjunctival epithelial cell line Chang 1-5c-4 (series 1) and the corneal cell line 2.040 pRSV-T (series 2) were cultured under standard conditions. Confluent cells were wetted for 20 min with artificial tears (Arufil® Uno, Arufil®, Lacrimal®, Lacophthal® sine, Siccaprotect®, Tears Again®, Vidisept® EDO, Vistil®, Wet Comod®) or PBS as a control. After exposure to a constant air flow for 0, 15, 30 and 45 minutes respectively, cells were incubated with the vital dye alamarBlue. Subsequently, absorption of the oxidised form of the dye was assessed using an ELISA-Reader. Results Cell best survival rates in series 1 after 15 min were found for Lacrimal® (0.89), Wet Comod® (0.84) compared to PBS (0.66) and in series 2 for Vidisept® EDO (0.57) and Lacrimal® (0.56) compared to PBS (0.01). After 45 min highest survival was seen in series 1 for Lacrimal® (0.46) and Lacophthal® sine (0.36) compared to PBS (0.33) and in series 2 for Lacrimal® (?0.06) and Arufil (?0.16) compared to PBS (?0.23). Conclusions Both cell lines tested showed different susceptibility towards desiccation and the artificial tears showed differences in preventing cells from desiccation. PMID:22534701

Tost, Frank; Keiss, Ramona; Großjohann, Rico; Jürgens, Clemens; Giebel, Jürgen

2012-01-01

426

Search for long lived heaviest nuclei beyond the valley of stability  

NASA Astrophysics Data System (ADS)

The existence of long lived superheavy nuclei (SHN) is controlled mainly by spontaneous fission and ?-decay processes. According to microscopic nuclear theory, spherical shell effects at Z=114, 120, 126 and N=184 provide the extra stability to such SHN to have long enough lifetime to be observed. To investigate whether the so-called “stability island” could really exist around the above Z, N values, the ?-decay half-lives along with the spontaneous fission and ?-decay half-lives of such nuclei are studied. The ?-decay half-lives of SHN with Z=102 120 are calculated in a quantum tunneling model with DDM3Y effective nuclear interaction using Q? values from three different mass formulas prescribed by Koura-Uno-Tachibana-Yamada (KUTY), Myers-Swiatecki (MS), and Muntian-Hofmann-Patyk-Sobiczewski (MMM). Calculation of spontaneous fission (SF) half-lives for the same SHN are carried out using a phenomenological formula and compared with SF half-lives predicted by Smolanczuk A possible source of discrepancy between the calculated ?-decay half-lives of some nuclei and the experimental data of GSI, JINR-FLNR, RIKEN, is discussed. In the region of Z=106 108 with N~ 160 164, the ?-stable SHN 106268Sg162 is predicted to have highest ?-decay half-life (T?~3.2 h) using Q? value from MMM. Interestingly, it is much greater than the recently measured T? (~22 s) of deformed doubly magic 108270Hs162 nucleus. A few fission-survived long-lived SHN which are either ?-stable or having large ?-decay half-lives are predicted to exist near 294110184, 293110183, 296112184, and 298114184. These nuclei might decay predominantly through ?-particle emission.

Chowdhury, P. Roy; Samanta, C.; Basu, D. N.

2008-04-01

427

A contemporary analysis of induction immunosuppression in pediatric lung transplant recipients.  

PubMed

There is an increasing trend in the use of induction immunosuppression in children undergoing lung transplantation (LTx). To evaluate the effect of this practice on survival, the United Network for Organ Sharing (UNOS) was queried from 1987 to 2012, restricting analysis to transplant patients 6-17 years old from 2001 to 2012, who received no induction (NONE) or induction (INDUCED) with the contemporary agents of basiliximab, alemtuzumab, thymoglobulin, antilymphocyte globulin (ALG), or antithymocyte globulin (ATG). Of 23 951 lung transplants, 330 met inclusion criteria with 177 (54%) being INDUCED. Of the INDUCED agents, 121 (68%) were basiliximab, 3 (2%) alemtuzumab, and 53 (30%) ALG/ATG/thymoglobulin. The mean patient age was 13.6 (SD = 3.2) and 14 (SD = 3.0) years for the INDUCED and NONE groups, respectively. The median survival in the INDUCED group was 77.4 months (95% CI: 46.1, 125.6) compared with 50.8 months (95% CI: 42.9, 61.3) for the NONE (log-rank P-value = 0.3601). The most common cause of death was due to allograft failure or pulmonary complications with only one patient dying from post-transplant lymphoproliferative disorder. The estimated hazard ratio for INDUCED versus NONE was 0.859 (95% CI: 0.620, 1.191; P = 0.3618); there were no significant confounders or effect modifiers among the demographic and clinical variables. In conclusion, antibody-based induction immunosuppression with contemporary agents had a trend toward a protective, but not statistically significant, effect in 6- to 17-year-old patients. PMID:24236829

Hayes, Don; Kirkby, Stephen; Wehr, Allison M; Lehman, Amy M; McConnell, Patrick I; Galantowicz, Mark; Higgins, Robert S; Whitson, Bryan A

2014-02-01

428

Improvement of multiple organ functions in hepatorenal syndrome during albumin dialysis with the molecular adsorbent recirculating system.  

PubMed

Recently, significant improvement of renal function and prolongation of survival were reported in hepatorenal syndrome (HRS) patients treated with the Molecular Adsorbent Recirculating System (MARS). As no impact on extrarenal organ function was documented, this trial looked into multiple organ function changes during MARS in HRS patients. Eight HRS patients (4 male, mean age 42.1 years, range 30-58, all United Network for Organ Sharing [UNOS] status 2A) were treated intermittendly 4-14 times (total 47, mean 5.9 +/- 3.4) between 4 and 8 h/single treatment. The following changes were observed pre- and posttreatment: bilirubin 466 +/- 146 to 284 +/- 134 micromol/L, creatinine 380 +/- 182 to 163 +/- 119 micromol/L, urea 26.4 +/- 10.3 to 12.9 +/- 4.9 mmol/L, plasma sodium 127.5 +/- 7.7 to 137.5 +/- 4.8 mmol/L (all p < 0.01). Mean arterial pressure (MAP) increased from 71.9 +/- 12.8 to 95.6 +/- 7.8 Torr (p < 0.001). Oliguria or anuria, present in all patients, was successfully reverted. Ascites, present in all patients, was not detectable after the treatment period. The hepatic encephalopathy grade decreased from 2.8 +/- 0.8 to 0.8 +/- 0.7 (p < 0.0001). Child-Index decreased from 13.25 +/- 1.3 to 9.4 +/- 1.8 (p < 0.001). The hospital survival rate was 62%. One man underwent successful liver transplantation 18 months after the treatment. We conclude that MARS can improve multiple organ functions in patients with HRS. PMID:11778928

Mitzner, S R; Klammt, S; Peszynski, P; Hickstein, H; Korten, G; Stange, J; Schmidt, R

2001-10-01

429

Contribuciones tecnicas para la medida de la contaminacion electromagnetica de microondas. Estudio en diversas poblaciones  

NASA Astrophysics Data System (ADS)

La contaminacion ambiental por campos electromagneticos ha resultado ser en estos ultimos anos uno de los problemas mas acuciantes del panorama tecnologico y de salud publica. En el primero de los casos porque las inversiones realizadas son enormes y en el segundo porque cada vez es mayor el numero de articulos, "technical reports" e informes medicos que afirman la existencia de una cierta causalidad, aunque sea debil, entre los campos electromagneticos y ciertos cuadros sintomatologicos. En nuestro caso, hemos dedicado bastantes esfuerzos a investigar el llamado "sindrome de radiofrecuencia / microondas", denominado asi en la literatura cientifica por presentarse en operarios de estaciones de radar y en trabajadores de potentes emisoras de radio y television. En esta memoria presentamos un resumen del trabajo realizado durante los ultimos anos en la medida de la contaminacion electromagnetica ambiental asociado a las comunicaciones inalambricas. En ella se recogen los fundamentos fisicos y propiedades de las ondas electromagneticas, la tecnologia empleada en los sistemas de telefonia celular y los antecedentes relativos a la investigacion de la interaccion de las ondas electromagneticas con organismos vivos. Se desarrolla un procedimiento de medida que ha conducido a la elaboracion de los primeros "mapas de radiofrecuencia" similares, en el aspecto descriptivo, a los mapas de ruido desarrollados en el area de la contaminacion acustica. Por ultimo, se analiza la respuesta subjetiva de los residentes, personas que viven en el entorno de cobertura de las estaciones base de telefonia movil y que se ven sometidos a determinados niveles de radiacion electromagnetica, con el fin de situar este fenomeno al nivel que le corresponde en el ambito de la respuesta subjetiva ciudadana.

Segura Garcia, Jaume

430

Detección y estudio mediante Fluorescencia Inducida por Láser de radicales libres formados por Disociación Multifotónica Infrarroja  

NASA Astrophysics Data System (ADS)

Una de las principales aplicaciones actuales de los procesos de disociación multifotónica inducidos por radiación láser infrarroja (DMI) es la producción de radiales libres, con el fin de estudiar sus propiedades cinéticas y espectroscópicas. La disociación de moléculas poliatómicas en el IR con láseres de CO2 tiene lugar desde la superficie de energía molecular mas baja y conduce generalmente a la formación de fragmentos en el estado electrónico fundamental, con diversos grados de excitación vibracional. En el Grupo de Procesos Multifotónicos del Instituto de Estructura de la Materia del C.S.I.C. hemos puesto a punto la técnica de Fluorescencia Inducida por Láser (LIF) para la detección y análisis en tiempo real de los fragmentos producidos en la DMI inducida mediante uno o dos campos láseres de diferentes longitudes de onda. Objetivos de nuestro trabajo han sido el estudio de los canales de disociación mayoritarios y de las especies transitoria producidas, así como de la distribución de energía interna con que éstas son generadas. En particular hemos detectado mediante LIF las especies: C2, CF, CH, SiH2, CF2, CH2, SiHCl, y CF3 a partir de la disociación de, entre otras, las siguientes moléculas: C2H3Br, C3F6, C4H8Si, C2H5ClSi y CH5ClSi. En este trabajo presentamos algunos de los resultados obtenidos mediante el estudio por LIF de estos radicales: estudio temporal de la señal LIF obtenida con determinación de tiempos de vida, espectros de excitación y fluorescencia, temperaturas vibracionales de formación, variación de la intensidad LIF con el tiempo de retraso entre los láseres de disociación y prueba, etc.

Santos, M.; Díaz, L.; Torresano, J. A.; Rubio, L.; Samoudi, B.

431

Closure Report for CAU No. 430: Buried Depleted Uraniuim Artillery Round No. 1, Tonopah Test Range, Revision 0  

SciTech Connect

1.1 Purpose This Closure Report presents the information obtained from investigative actions performed to justify the decision for clean closure of CAU 430 through "No Further Action." The investigative actions were performed per the Streamlined Approach for Environmental Restoration Plan, CA UNO. 430: Buried Depleted Uranium Artille~ Round No. 1, Tonopah Test Range (DOE/NV, 1996a) (hereafter referred to as the SAFER Plan). The Buried DU Artillery Round No. 1 is located approximately 1.1 kilometers (km) (0.7 mile [mi]) south of Avenue 13 in the test area south of Area 9 (Figure 1-2). The site was thought to consist of a potentially unexploded W-79 Joint Test Assembly (JTA) test artillery projectile with high explosives (HE) and DU. The DU was substituted for Special Nuclear Material to prevent a nuclear explosion and yet retain the physical characteristics of uranium for ballistic and other mechanical tests. The projectile was reportedly buried in one pit, approximately 5 to 10 feet (ft) deep (Smith, 1993; Smith, 1996; Quas, 1996). The exact location of the burial pit is unknown; however, three disturbed areas (Sites A, B, and C) were identified through geophysical surveys, site visits, and employee interviews as possible locations of the test projectile (Figure 1-3). Results of the investigation are summarized within this Closure Report. Additional information about the site and investigation activities may be found in the SAFER Plan (DOE/NV, 1996a). 1.2 Scope The objectives of the SAFER Plan (DOE/NV, 1996a) activities were to prepare the site for closure through locating and identi~ing the projectile (Buried DU Artillery Round No. 1), destroying the projectile and any remaining components, collecting soil samples to detect residual contamination resulting from projectile destruction, and finally, remediating residual contamination.

None

1997-02-25

432

Comunicación de pareja y VIH en mujeres en desventaja social  

PubMed Central

Introducción La epidemia de VIH y SIDA se ha diseminado rápidamente a nivel mundial tendiendo a la feminización, pauperización y heterosexualización. La comunicación de pareja en torno el VIH es descrita como uno de los factores protectores en la adquisición de esta enfermedad, favoreciendo la adopción de conductas sexuales seguras tales como la negociación de pareja y la utilización de preservativo, consideróndose como un pilar fundamental en la incorporación de medidas de autocuidado en la sexualidad femenina. Objetivo Determinar el nivel de comunicación de pareja en torno al VIH en mujeres chilenas en desventaja social. Metodología Cuatrocientas noventa y seis mujeres contestaron la entrevista inicial de la investigación “Testing an HIV/AIDS Prevention Intervention for Chilean Women” (RO1 TW 006977 PI Cianelli). Se utilizó la escala “Health protective sexual communication scale (HPC)” (0–10 puntos). Se realizó un análisis descriptivo utilizando el programa SPSS 16.0. Resultados El promedio del nivel de comunicación de pareja fue de 3,26 ± 2,7 puntos con la pareja principal, de 2,52 ± 2,48 puntos con una segunda pareja y de 0 puntos con una tercera pareja. Los temas de menor comunicación entre las parejas fueron el uso de preservativo y la realización del test para VIH antes de tener relaciones sexuales. Conclusión Las mujeres de la muestra presentan bajos niveles de comunicación de pareja en relación a VIH con todas sus parejas sexuales. Son necesarias estrategias que potencien este tópico dentro de las intervenciones de prevención de VIH y SIDA de manera de fortalecer la adopción de conductas de autocuidado en torno al tema. PMID:19936328

Rosina Cianelli, A.; Lilian Ferrer, L.; Margarita Bernales, S.; Natalia Villegas, R.

2009-01-01

433

Isolation and characterization of Salmonella enterica in day-old ducklings in Egypt  

PubMed Central

Importing day-old ducklings (DOD) unknowingly infected with non-typhoid Salmonella (NTS) may be associated with disease risk. Domestic and international trade may enhance this risk. Salmonella enterica serovars, their virulence genes combinations and antibiotic resistance, garner attention for their potentiality to contribute to the adverse health effects on populations throughout the world. The aim of this study was to estimate the risk of imported versus domestic DOD as potential carriers of NTS. The results confirm the prevalence of salmonellosis in imported ducklings was 18.5% (25/135), whereas only 12% (9/75) of cases were determined in the domestic ducklings. Fourteen serovars (Salmonella enteritidis, Salmonella kisii, Salmonella typhimurium, Salmonella gaillac, Salmonella uno, Salmonella eingedi, Salmonella shubra, Salmonella bardo, Salmonella inganda, Salmonella kentucky, Salmonella stanley, Salmonella virchow, Salmonella haifa, and Salmonella anatum) were isolated from the imported ducklings, whereas only S. enteritidis, S. typhimurium, S. virchow, and S. shubra were isolated from the domestic ducklings. The isolated Salmonella serovars were 100% susceptible to only colistin sulphate and 100% resistant to lincomycin. The 14 Salmonella serovars were screened for 11 virulence genes (invA, avrA, ssaQ, mgtC, siiD, sopB, gipA, sodC1, sopE1, spvC, and bcfC) by PCR. The invA, sopB, and bcfC genes were detected in 100% of the Salmonella serovars; alternatively, the gipA gene was absent in all of the isolated Salmonella serovars. The 11 virulent genes were not detected in either of S. stanley or S. haifa serovars. The results confirm an association between antibiotic resistance and virulence of Salmonella in the DOD. This study confirms the need for a country adherence to strict public health and food safety regimes. PMID:24548159

Osman, Kamelia M; Marouf, Sherif H; Zolnikov, Tara R; AlAtfeehy, Nayerah

2014-01-01

434

Multiple Colon Polyposis  

PubMed Central

Introduction: Familial adenomatous polyposis (FAP) is a rare autosomal, dominant hereditary disease, which affects both sexes equally (1-10). FAP accounts for less than 1% of all colon cancers and is estimated to occur in one of 8,300 live births. It is characterized by numerous adenomas scattered throughout mucosa of the colon and rectum. Case Report: The patient is a 62 years old man, admitted at the Surgical Department of the General Hospital in Konjic on May 18 2010 with gastrointestinal problems including: hard stool, often splattered with fresh blood, irregular and that causes the patient a lot of problems. The final diagnosis was median laparatomy supra et infraumibilicalis. Exploratio cavi abdominalis. Colectomy totalis et ileo-recto anastomosis TT cum staypler (33Ch). Loop ileostomy. Drainage cavi abdominalis N I (uno). Early postoperative course was generally regular. Control laboratory findings show the reference value. After ten days of hospitalization, the patient was discharged on the home recovery, with practically given instructions for care and use of stoma bags. For the secondary surgery was planned ileostomy closure, and regular post-operative endoscopic control. Conclusion: Most of the listed surgical intervention in case of FAP treatment localized in the colon can be performed by open (classic), or laparoscopic methods. Duration of postoperative stay in the hospital depends on the patient’s general condition and the type of performed surgery. It is usually about 7 days. After hospital treatment, recovery at home is from 4-6 weeks. Patients can usually return to work or school 6-8 weeks after surgery. After surgery, patients lives will be completely normal. Sexual and social activities remain the same, while either procedure does not affect the ability of a man or woman to have offspring.

Buturovic, Sead

2014-01-01

435

Search for long lived heaviest nuclei beyond the valley of stability  

SciTech Connect

The existence of long lived superheavy nuclei (SHN) is controlled mainly by spontaneous fission and {alpha}-decay processes. According to microscopic nuclear theory, spherical shell effects at Z=114, 120, 126 and N=184 provide the extra stability to such SHN to have long enough lifetime to be observed. To investigate whether the so-called 'stability island' could really exist around the above Z, N values, the {alpha}-decay half-lives along with the spontaneous fission and {beta}-decay half-lives of such nuclei are studied. The {alpha}-decay half-lives of SHN with Z=102-120 are calculated in a quantum tunneling model with DDM3Y effective nuclear interaction using Q{sub {alpha}} values from three different mass formulas prescribed by Koura-Uno-Tachibana-Yamada (KUTY), Myers-Swiatecki (MS), and Muntian-Hofmann-Patyk-Sobiczewski (MMM). Calculation of spontaneous fission (SF) half-lives for the same SHN are carried out using a phenomenological formula and compared with SF half-lives predicted by Smolanczuk et al. A possible source of discrepancy between the calculated {alpha}-decay half-lives of some nuclei and the experimental data of GSI, JINR-FLNR, RIKEN, is discussed. In the region of Z=106-108 with N{approx}160-164, the {beta}-stable SHN {sub 106}{sup 268}Sg{sub 162} is predicted to have highest {alpha}-decay half-life (T{sub {alpha}}{approx}3.2 h) using Q{sub {alpha}} value from MMM. Interestingly, it is much greater than the recently measured T{sub {alpha}} ({approx}22 s) of deformed doubly magic {sub 108}{sup 270}Hs{sub 162} nucleus. A few fission-survived long-lived SHN which are either {beta}-stable or having large {beta}-decay half-lives are predicted to exist near {sup 294}110{sub 184}, {sup 293}110{sub 183}, {sup 296}112{sub 184}, and {sup 298}114{sub 184}. These nuclei might decay predominantly through {alpha}-particle emission.

Chowdhury, P. Roy [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Samanta, C. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Physics Department, Virginia Commonwealth University, Richmond, Virginia 23284-2000 (United States); Physics Department, University of Richmond, Richmond, Virginia 23173 (United States); Basu, D. N. [Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064 (India)

2008-04-15

436

New Initiatives for a Successful Diversity Program at the University of New Orleans  

NASA Astrophysics Data System (ADS)

The Geoscience Program at the University of New Orleans has been actively working to increase diversity in the Geosciences since 1974 when Dr. Louis Fernandez (now at Cal State San Bernardino) initiated a summer field trip for local minority high school juniors and seniors. That early effort was funded with a grant from the National Science Foundation. After the NSF support ended, the department and local Petroleum companies maintained the program continuously to the present. The summer field trip has been a major source of minority geoscientists nationally and our minority enrollment has grown rapidly during the past approximately 5 years primarily as a result of significant additional scholarship support from industry. Based on our preliminary success, we decided to make a major effort to expand our program beyond the basic field trip and scholarships. In particular, with a grant from the National Science Foundation Geoscience Diversity program beginning this past year, we have 1) initiated a new summer field program for high school freshmen and sophomores that focus on our local environment, 2) created a summer field trip for K-12 science teachers, 3) developed a new program of independent research for our undergraduate students and 4) brought in our first two visiting professors. The new summer program involved 10 students in a 2-1/2 week series of classes, field trips and camping activities. In addition to studying the environment, students produced a movie about their experiences and a website. We anticipate a larger group of students in next year's program and that several of this past summer's participants will apply to go on our field trip for Juniors and Seniors when they are eligible. The first summer field trip for teachers focused on the area around the Teton Mountains and Yellowstone National park in Wyoming and Idaho. We devoted considerable time to learning basic geologic principles and collecting rock and fossil samples, outside of the national parks, for their classrooms. The teachers prepared material on our field trip stops and we videotaped their presentations at the outcrops for future use in the classroom. Seven undergraduate students conducted independent research as part of our new program. One participated in a REU project in Rhode Island and the other six conducted a variety of independent projects at UNO. Two of these projects have produced abstracts for national meetings and others are anticipated. Finally, we have supported two visiting faculty to provide role models and classes relevant to our minority students. It is too early to assess the full success of most of these new initiatives but the independent research has clearly given our students an improved attitude about themselves and what they want to do with their future.

Serpa, L.; Hall, F.

2002-12-01

437

Plant Habitat Telemetry / Command Interface and E-MIST  

NASA Technical Reports Server (NTRS)

Plant Habitat (PH) is an experiment to be taken to the International Space Station (ISS) in 2016. It is critical that ground support computers have the ability to uplink commands to control PH, and that ISS computers have the ability to downlink PH telemetry data to ground support. This necessitates communication software that can send, receive, and process, PH specific commands and telemetry. The objective of the Plant Habitat Telemetry/ Command Interface is to provide this communication software, and to couple it with an intuitive Graphical User Interface (GUI). Initial investigation of the project objective led to the decision that code be written in C++ because of its compatibility with existing source code infrastructures and robustness. Further investigation led to a determination that multiple Ethernet packet structures would need to be created to effectively transmit data. Setting a standard for packet structures would allow us to distinguish these packets that would range from command type packets to sub categories of telemetry packets. In order to handle this range of packet types, the conclusion was made to take an object-oriented programming approach which complemented our decision to use the C++ programming language. In addition, extensive utilization of port programming concepts was required to implement the core functionality of the communication software. Also, a concrete understanding of a packet processing software was required in order to put aU the components of ISS-to-Ground Support Equipment (GSE) communication together and complete the objective. A second project discussed in this paper is Exposing Microbes to the Stratosphere (EMIST). This project exposes microbes into the stratosphere to observe how they are impacted by atmospheric effects. This paper focuses on the electrical and software expectations of the project, specifically drafting the printed circuit board, and programming the on-board sensors. The Eagle Computer-Aided Drafting (CAD) software was used to draft the E-MIST circuit. This required several component libraries to be created. Coding the sensors and obtaining sensor data involved using the Arduino Uno developmental board and coding language, and properly wiring peripheral sensors to the microcontroller (the central control unit of the experiment).

Walker, Uriae M.

2013-01-01

438

Morbidity and Mortality in Heart Transplant Candidates Supported With Mechanical Circulatory Support  

PubMed Central

Background Survival of patients on left ventricular assist devices (LVADs) has improved. We examined the differences in risk of adverse outcomes between LVAD-supported and medically managed candidates on the heart transplant waiting list. Methods and Results We analyzed mortality and morbidity in 33 073 heart transplant candidates registered on the United Network for Organ Sharing (UNOS) waiting list between 1999 and 2011. Five groups were selected: patients without LVADs in urgency status 1A, 1B, and 2; patients with pulsatile-flow LVADs; and patients with continuous-flow LVADs. Outcomes in patients requiring biventricular assist devices, total artificial heart, and temporary VADs were also analyzed. Two eras were defined on the basis of the approval date of the first continuous-flow LVAD for bridge to transplantation in the United States (2008). Mortality was lower in the current compared with the first era (2.1%/mo versus 2.9%/mo; P<0.0001). In the first era, mortality of pulsatile-flow LVAD patients was higher than in status 2 (hazard ratio [HR], 2.15; P<0.0001) and similar to that in status 1B patients (HR, 1.04; P=0.61). In the current era, patients with continuous-flow LVADs had mortality similar to that of status 2 (HR, 0.80; P=0.12) and lower mortality compared with status 1A and 1B patients (HR, 0.24 and 0.47; P<0.0001 for both comparisons). However, status upgrade for LVAD-related complications occurred frequently (28%) and increased the mortality risk (HR, 1.75; P=0.001). Mortality was highest in patients with biventricular assist devices (HR, 5.00; P<0.0001) and temporary VADs (HR, 7.72; P<0.0001). Conclusions Mortality and morbidity on the heart transplant waiting list have decreased. Candidates supported with contemporary continuous-flow LVADs have favorable waiting list outcomes; however, they worsen significantly once a serious LVAD-related complication occurs. Transplant candidates requiring temporary and biventricular support have the highest risk of adverse outcomes. These results may help to guide optimal allocation of donor hearts. PMID:23271796

Wever-Pinzon, Omar; Drakos, Stavros G.; Kfoury, Abdallah G.; Nativi, Jose N.; Gilbert, Edward M.; Everitt, Melanie; Alharethi, Rami; Brunisholz, Kim; Bader, Feras M.; Li, Dean Y.; Selzman, Craig H.; Stehlik, Josef

2013-01-01

439

EAARL Coastal Topography-Pearl River Delta 2008: First Surface  

USGS Publications Warehouse

These remotely sensed, geographically referenced elevation measurements of Lidar-derived first surface (FS) topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the University of New Orleans (UNO), Pontchartrain Institute for Environmental Sciences (PIES), New Orleans, LA; and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and accurate datasets of a portion of the Pearl River Delta in Louisiana and Mississippi, acquired March 9-11, 2008. The datasets are made available for use as a management tool to research scientists and natural resource managers. An innovative airborne Lidar instrument originally developed at the NASA Wallops Flight Facility, and known as the Experimental Advanced Airborne Research Lidar (EAARL), was used during data acquisition. The EAARL system is a raster-scanning, waveform-resolving, green-wavelength (532-nanometer) Lidar designed to map near-shore bathymetry, topography, and vegetation structure simultaneously. The EAARL sensor suite includes the raster-scanning, water-penetrating full-waveform adaptive Lidar, a down-looking red-green-blue (RGB) digital camera, a high-resolution multi-spectral color infrared (CIR) camera, two precision dual-frequency kinematic carrier-phase GPS receivers, and an integrated miniature digital inertial measurement unit, which provide for submeter georeferencing of each laser sample. The nominal EAARL platform is a twin-engine Cessna 310 aircraft, but the instrument may be deployed on a range of light aircraft. A single pilot, a Lidar operator, and a data analyst constitute the crew for most survey operations. This sensor has the potential to make significant contributions in measuring sub-aerial and submarine coastal topography within cross-environmental surveys. Elevation measurements were collected over the survey area using the EAARL system, and the resulting data were then processed using the Airborne Lidar Processing System (ALPS), a custom-built processing system developed in a NASA-USGS collaboration. ALPS supports the exploration and processing of Lidar data in an interactive or batch mode. Modules for presurvey flight line definition, flight path plotting, Lidar raster and waveform investigation, and digital camera image playback have been developed. Processing algorithms have been developed to extract the range to the first and last significant return within each waveform. ALPS is used routinely to create maps that represent submerged or first surface topography. Specialized filtering algorithms have been implemented to determine the 'bare earth' under vegetation from a point cloud of last return elevations.

Nayegandhi, Amar; Brock, John C.; Wright, C. Wayne; Miner, Michael D.; Michael, D.; Yates, Xan; Bonisteel, Jamie M.

2009-01-01

440

EAARL Coastal Topography-Pearl River Delta 2008: Bare Earth  

USGS Publications Warehouse

These remotely sensed, geographically referenced elevation measurements of Lidar-derived bare earth (BE) topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the University of New Orleans (UNO), Pontchartrain Institute for Environmental Sciences (PIES), New Orleans, LA; and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and accurate datasets of a portion of the Pearl River Delta in Louisiana and Mississippi, acquired March 9-11, 2008. The datasets are made available for use as a management tool to research scientists and natural resource managers. An innovative airborne Lidar instrument originally d