Science.gov

Sample records for norte principales cambios

  1. Cambio

    SciTech Connect

    Johnson, William

    2015-10-19

    Cambio opens data files from common gamma radiation detectors, displays a visual representation of it, and allows the user to edit the meta-data, as well as convert the data to a different file format.

  2. Tiempo para un cambio

    NASA Astrophysics Data System (ADS)

    Woltjer, L.

    1987-06-01

    En la reunion celebrada en diciembre dei ano pasado informe al Consejo de mi deseo de terminar mi contrato como Director General de la ESO una vez que fuera aprobado el proyecto dei VLT, que se espera sucedera hacia fines de este aAo. Cuando fue renovada mi designacion hace tres aAos, el Consejo conocia mi intencion de no completar los cinco aAos dei contrato debido a mi deseo de disponer de mas tiempo para otras actividades. Ahora, una vez terminada la fase preparatoria para el VLT, Y habiendose presentado el proyecto formalmente al Consejo el dia 31 de marzo, y esperando su muy probable aprobacion antes dei termino de este ano, me parece que el 10 de enero de 1988 presenta una excelente fecha para que se produzca un cambio en la administracion de la ESO.

  3. "El Norte," Deracination and Circularity: An Epic Gone Awry

    ERIC Educational Resources Information Center

    Brakel, Arthur

    2007-01-01

    Early journalistic reviews (e.g., Gold, Ebert, and Kael) of "El Norte" (1983), Gregory Nava's first major film, identify it as an epic. In "El Norte" the siblings Enrique and Rosa, two Guatemalan Amerindians, leave their native village on a quest to what for them is the mythical land in the North. Although "El Norte" corresponds to the general…

  4. Del Norte means north to recycling

    SciTech Connect

    Aquino, J.T.

    1998-06-01

    Del Norte Regional Recycling and Transfer Station is owned by the city of Oxnard, California and operated by BLT Enterprises, Inc. The Del Norte facility--located in southwestern Ventura County about an hour northwest of Los Angeles--processes polyethylene terephthalate (PET) and high-density polyethylene (HDPE) plastic containers, aluminum, steel, glass, old corrugated containers (OCC), newspapers, computer printout paper, white and colored ledger paper, coated book, supermix paper, telephone books, and old magazines. According to the company, there has been virtually no community opposition to the site. The facility has few neighbors, and those are agricultural. To keep the community relationship strong, the facility`s design and location all but eliminated odor and noise complaints. The building was designed against the prevailing wind pattern, and BLT processes odorous material fast. A misting system installed for dust suppression also can be used with a solution for odor control should the need arise.

  5. 78 FR 30268 - Del Norte County Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-22

    ... Office, 1330 Bayshore Way, Eureka, CA. 95501. Please call ahead to 707-442-1721 to facilitate entry into... Norte County Unified School District, Redwood Room, 301 West Washington Boulevard, Crescent City...

  6. 65. Photographer unknown March 1931 DEL NORTE COUNTY, SECTION B, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    65. Photographer unknown March 1931 DEL NORTE COUNTY, SECTION B, HIGHWAY 1, 1-DN-1-B #66A, STA. 166.0+00 WIDENED ROADBED BEFORE COVERING LOG CRIB, 3-31. BACK READS: WIDENING ROAD BED WITH LOGS, APPROX 30 SQUARE & 60 LONG ON DN-1 SEC B STA 156+. Stamped office copy, - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  7. 75 FR 21220 - Del Norte Resource Advisory Committee (RAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-23

    ... agency #0;statements of organization and functions are examples of documents #0;appearing in this section...; ] DEPARTMENT OF AGRICULTURE Forest Service Del Norte Resource Advisory Committee (RAC) AGENCY: Forest Service... Rivers National Forest, 1330 Bayshore Way, Eureka, CA 95503 (707) 441-3673; e-mail...

  8. 78 FR 50025 - Del Norte County Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ...The Del Norte County Resource Advisory Committee (RAC) will meet in Crescent City, California on the dates listed below. The Committee is authorized under the Secure Rural Schools and Community Self-Determination Act (Act) (Pub. L. 112-141) and operates in compliance with the Federal Advisory Committee Act (FACA) (Pub. L. 92- 463). The purpose of the Committee is to improve collaborative......

  9. Petrophysical characterization of the Carito Norte, Mulata and Carito fields, Norte de Monagas, Eastern Venezuela

    SciTech Connect

    Porras, J.C.; De J. Valle,

    1996-08-01

    The Norte de Monagas trend is located in the Eastern Venezuelan Basin and is characterized by high temperature, high initial pressure and production rates, variable PVT properties, GORs, and asphaltene content, and the presence of a tar mat at the base of the oil column. These reservoirs were petrophysically characterized through the integration of core and log data. Productive sands are composed of very coarse- to medium-grained sands deposited primarily in deltaic to shallow marine environments. These sands are quartz-rich, with clay matrix averaging 3% in the Oligocene and 6% in the Cretaceous. The main difference is the presence of up to 30% feldspars in the Cretaceous. Clay mineralogy is dominated by illitic material in the Cretaceous and by kaolinite in the Oligocene. Post-depositional changes dominated by cementation, mechanical compaction and subsequent dissolution processes have resulted in marked improvement or degradation of the productive characteristics of these reservoirs. Rocks were divided into four petrophysical. categories based on grain size, pore throat radius, porosity and permeability. Mercury saturation vs. mercury saturation over capillary pressure plots show the dominant interconnected pore system which controls flow rates is best defined by 50% saturation. Plots constructed using R50 pore aperture correlation indicate the pore throats to be macro to mega porous. Average log calculated water saturation is 14% compared with estimated from capillary pressure data of 12% at 1200{prime} above free water level, and 15% from relative permeability data. Relative permeability data indicate the rocks behave preferably as water-wet.

  10. Modeling Visibility in the EL Paso del Norte Region

    NASA Astrophysics Data System (ADS)

    Fitzgerald, R. M.; Medina, R.; DuBois, D. W.; Novlan, D.

    2013-12-01

    Poor visibility is a subject of growing public concern throughout the U.S, and an active area of research. Its societal impacts in air quality, aviation transport and traffic are significant. Aerosols play a fundamental role in the attenuation of solar radiation, and also affect visibility. The scattering and extinction coefficients of aerosol particles in the Paso del Norte Region have been calculated using the T- matrix model in conjunction with a laser particle counter. Inter-comparison of the model's results of the scattering and absorption coefficients against the corresponding data from a Photoacustic Extinctiometer instrument (which measures in-situ absorption and scattering coefficients of aerosol particles) shows excellent agreement. In addition, the volume-weighted method is used to determine the composite index of refraction which is representative of the aerosols for the Paso del Norte Airshed to obtain information of the type of aerosol particles present in the Airshed. The Single Scattering Albedo has also been retrieved using our methodology to obtain further insight into the type of aerosols present on a given day. Finally, the Koschmieder equation has been used to calculate the visual range or visibility, and was correlated with the PM2.5 and PM10 particle concentration present in the Airshed. Our methodology will allow a better understanding of the size and type of aerosol particles that are most detrimental to the visibility for the Paso del Norte Region.

  11. 66. Photographer unknown March 1920'S DEL NORTE COUNTY, SECTION B, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    66. Photographer unknown March 1920'S DEL NORTE COUNTY, SECTION B, HIGHWAY 1. 1-DN 1-B #9, CORDUROY DETOUR INTO CRESCENT CITY, 2-2 (3?). Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  12. 62. R.L.T., photographer November 1, 1934 DEL NORTE COUNTY, SECTION ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    62. R.L.T., photographer November 1, 1934 DEL NORTE COUNTY, SECTION D, HIGHWAY 1. REDWOOD CLEARING ON EXISTING LINE, 1-DN-71-A #26, R.L.T. 11-1-34. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  13. 63. G.F.H., photographer July 30, 1932 DEL NORTE COUNTY, SECTION ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    63. G.F.H., photographer July 30, 1932 DEL NORTE COUNTY, SECTION A, HIGHWAY 1. 1-DN A #124, STA. 164=00 SHOWING DRAINAGE CONDITIONS, G.F.H., 7-30-32. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  14. Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)

    NASA Astrophysics Data System (ADS)

    Kirschbaum, Alicia; Martínez, Estela; Pettinari, Gisela; Herrero, Silvana

    2005-09-01

    Two weathering profiles evolved on peneplain-related granites in Sierra Norte, Córdoba province, were examined. Several weathering levels, of no more than 2 m thickness, were studied in these profiles. They had developed from similar parent rock, which had been exposed to hydrothermal processes of varying intensity. Fracturing is the most notable feature produced by weathering; iron oxides and silica subsequently filled these fractures, conferring a breccia-like character to the rock. The clay minerals are predominantly illitic, reflecting the mineral composition of the protolith. Smaller amounts of interstratified I/S RO type are also present, as well as scarce caolinite+chlorite that originated from the weathering of feldspar and biotite, respectively. The geochemical parameters define the weathering as incipient, in contrast to the geomorphological characteristics of Sierra Norte, which point to a long weathering history. This apparent incompatibility could be due to the probable erosion of the more weathered levels of the ancient peneplains, of which only a few relicts remain. Similar processes have been described at different sites in the Sierras Pampeanas. Reconstruction and dating of the paleosurfaces will make it possible to set time boundaries on the weathering processes studied and adjust the paleographic and paleoclimatic interpretations of this great South American region.

  15. Ozone studies in the Paso del Norte region

    NASA Astrophysics Data System (ADS)

    Becerra-Davila, Fernando

    The Paso del Norte region forms the largest contiguous bi-national conglomerate on the US-Mexico border. With a combined population of around 2 million inhabitants, the Paso del Norte region is isolated, more than 500 km away from the nearest urban area of comparable size, thus making it an ideal location for air quality studies of an isolated urban environment. The meteorological conditions leading to a high ozone episode in this region, such as the historical ozone episode of June 2006, are analyzed. It is well known that stagnation and minimal winds, high temperatures, and pressure ridges over the region are conducive to high ozone episodes. In addition, the planetary boundary height is studied to understand its impact on high ozone episodes. Several studies report that ground level ozone non-attainment regulations could be caused not only by local emissions, but also by atmospheric transport. In this work the atmospheric advection of pollutants into the region is analyzed using HYSPLIT backward trajectories. Furthermore, a novel backward trajectory clustering technique is implemented for the summer of 2006. The "ozone weekend effect" (OWE) is a phenomenon by which in some geographical regions ambient ozone concentrations tend to be higher on weekends than on weekdays, despite the lower emissions of ozone precursors during those days. The observed local OWE has never previously been studied in terms of the photolysis rates of four of the main ozone precursors. In this research a novel method that allows the calculation of actinic fluxes, photolysis frequencies and photolysis rates with a high degree of accuracy and reliability has been developed. This method utilizes a combination of the experimental data available for this region in conjunction with a radiative transfer model (TUV model). Three weekend-weekday cases during summers 2006, 2009 and 2010 are studied in this work. In this research, the photolysis impact on the local OWE is studied. The results

  16. CONTAMINACIÓN AMBIENTAL, VARIABILIDAD CLIMÁTICA Y CAMBIO CLIMÁTICO: UNA REVISIÓN DEL IMPACTO EN LA SALUD DE LA POBLACIÓN PERUANA

    PubMed Central

    Gonzales, Gustavo F.; Zevallos, Alisson; Gonzales-Castañeda, Cynthia; Nuñez, Denisse; Gastañaga, Carmen; Cabezas, César; Naeher, Luke; Levy, Karen; Steenland, Kyle

    2015-01-01

    RESUMEN El presente artículo es una revisión sobre la contaminación del agua, el aire y el efecto del cambio climático en la salud de la población peruana. Uno de los principales contaminantes del aire es el material particulado menor de 2,5 μ (PM 2,5), en la ciudad de Lima, anualmente 2300 muertes prematuras son atribuibles a este contaminante. Otro problema es la contaminación del aire domiciliario por el uso de cocinas con combustible de biomasa, donde la exposición excesiva a PM 2,5 dentro de las casas es responsable de aproximadamente 3000 muertes prematuras anuales entre adultos, con otro número desconocido de muertes entre niños debido a infecciones respiratorias. La contaminación del agua tiene como principales causas los desagües vertidos directamente a los ríos, minerales (arsénico) de varias fuentes, y fallas de las plantas de tratamiento. En el Perú, el cambio climático puede impactar en la frecuencia y severidad del fenómeno de El Niño oscilación del sur (ENSO) que se ha asociado con un incremento en los casos de enfermedades como cólera, malaria y dengue. El cambio climático incrementa la temperatura y puede extender las áreas afectadas por enfermedades transmitidas por vectores, además de tener efecto en la disponibilidad del agua y en la contaminación del aire. En conclusión, el Perú, pasa por una transición de factores de riesgo ambientales, donde coexisten riesgos tradicionales y modernos, y persisten los problemas infecciosos y crónicos, algunos de los cuales se asocian con problemas de contaminación de agua y de aire. PMID:25418656

  17. Cambio : a file format translation and analysis application for the nuclear response emergency community.

    SciTech Connect

    Lasche, George P.

    2009-10-01

    Cambio is an application intended to automatically read and display any spectrum file of any format in the world that the nuclear emergency response community might encounter. Cambio also provides an analysis capability suitable for HPGe spectra when detector response and scattering environment are not well known. Why is Cambio needed: (1) Cambio solves the following problem - With over 50 types of formats from instruments used in the field and new format variations appearing frequently, it is impractical for every responder to have current versions of the manufacturer's software from every instrument used in the field; (2) Cambio converts field spectra to any one of several common formats that are used for analysis, saving valuable time in an emergency situation; (3) Cambio provides basic tools for comparing spectra, calibrating spectra, and isotope identification with analysis suited especially for HPGe spectra; and (4) Cambio has a batch processing capability to automatically translate a large number of archival spectral files of any format to one of several common formats, such as the IAEA SPE or the DHS N42. Currently over 540 analysts and members of the nuclear emergency response community worldwide are on the distribution list for updates to Cambio. Cambio users come from all levels of government, university, and commercial partners around the world that support efforts to counter terrorist nuclear activities. Cambio is Unclassified Unlimited Release (UUR) and distributed by internet downloads with email notifications whenever a new build of Cambio provides for new formats, bug fixes, or new or improved capabilities. Cambio is also provided as a DLL to the Karlsruhe Institute for Transuranium Elements so that Cambio's automatic file-reading capability can be included at the Nucleonica web site.

  18. Quaternary deformation around the Palo Negro area, Pampa Norte, Argentina

    NASA Astrophysics Data System (ADS)

    Brunetto, E.; Iriondo, M.; Zamboni, L.; Gottardi, G.

    2010-04-01

    The Pampa Norte region is a great plain characterized by low slopes and accumulation of hundreds of meters of thick loose sediments. A high morphostructure denominated San Guillermo block stands out in the central plain, the Tostado-Selva scarp forming its western boundary. It is located in an intraplate setting characterized by low tectonic activity. However recent uplift can be inferred by means of terrain analysis and the sedimentology of the Palo Negro Fm. Pond deposits (Palo Negro Fm.) observed in the scarp suggest topographic inversion during the Late Quaternary in the Palo Negro area. The morphology indicates that the deformation was widely distributed, forming a gentle (ca. 5 m amplitude and 13 km wavelength) asymmetric fold. Low sinuosity lineaments located in the base of the scarp, coincident with knick points in the topographic profile, can be interpreted as the projection of tip-lines by high-angle fault-propagation. This geometry is compatible with reverse kinematics on blind faults. A deformation style with reactivation of pre-existing faults is consistent with structural observations. Seismic reflectors suggest the presence of Cretaceous high-angle normal faults, and the orientation of lineaments is similar to the orientation of the graben systems and transverse accommodation zones originated during the opening of the South Atlantic Ocean. One OSL dating of 67.4 ± 5.1 kyr B.P (from Palo Negro Fm. supposed as deposited on a flat plain floor) and a height difference of 9.5 m measured in the Tostado-Selva scarp account for an averaged uplift rate of 0.14 mm/year.

  19. DELIVERING TIMELY AIR QUALITY, TRAFFIC, AND WEATHER INFORMATION TO YOUR COMMUNITY/THE PASO DEL NORTE ENVIRONMENTAL MONITORING PROJECT

    EPA Science Inventory

    EPA has developed a technology transfer handbook for the EMPACT Paso del Norte Project. The EMPACT Paso del Norte Environmental Monitoring Project is a mobile vehicle emissions project that involves the international community of El Paso, TX; Sundland Park, NM; and Juarez, Mexico...

  20. ATMOSPHERIC VOLATILE ORGANIC COMPOUND MEASUREMENTS DURING THE 1996 PASO DEL NORTE OZONE STUDY

    EPA Science Inventory

    Ambient air VOC samples were collected at surface air quality monitoring sites, near sources of interest, and aloft on the US (El Paso) and Mexican (Ciudad Juarez) side of the border during a six-week period of the 1996 Paso del Norte Ozone Study. Samples were collected at five...

  1. Assessment of potential shale gas and shale oil resources of the Norte Basin, Uruguay, 2011

    USGS Publications Warehouse

    Schenk, Christopher J.; Kirschbaum, Mark A.; Charpentier, Ronald R.; Cook, Troy; Klett, Timothy R.; Gautier, Donald L.; Pollastro, Richard M.; Weaver, Jean N.; Brownfield, Michael

    2011-01-01

    Using a performance-based geological assessment methodology, the U.S. Geological Survey estimated mean volumes of 13.4 trillion cubic feet of potential technically recoverable shale gas and 0.5 billion barrels of technically recoverable shale oil resources in the Norte Basin of Uruguay.

  2. Urban Impact of Dissolved Metals in the Paso del Norte Segment of the Rio Grande

    ERIC Educational Resources Information Center

    Freiwan, Sumayeh Ahmad

    2013-01-01

    The Paso del Norte segment of the Rio Grande experiences two seasons per year; the (wet) irrigation season and the (dry) non-irrigation season. The goal of this study was to improve the understanding of occurrence and contribution of dissolved metals in this region during the non-irrigation season. The objectives of this study were to (1) evaluate…

  3. Capabilities, methodologies, and use of the cambio file-translation application.

    SciTech Connect

    Lasche, George P.

    2007-03-01

    This report describes the capabilities, methodologies, and uses of the Cambio computer application, designed to automatically read and display nuclear spectral data files of any known format in the world and to convert spectral data to one of several commonly used analysis formats. To further assist responders, Cambio incorporates an analysis method based on non-linear fitting techniques found in open literature and implemented in openly published source code in the late 1980s. A brief description is provided of how Cambio works, of what basic formats it can currently read, and how it can be used. Cambio was developed at Sandia National Laboratories and is provided as a free service to assist nuclear emergency response analysts anywhere in the world in the fight against nuclear terrorism.

  4. OPERACIÓN IceBridge: Explorando cambios en el hielo de Groenlandia

    NASA Video Gallery

    Operación IceBridge es una misión aérea de la NASA dedicada a estudiar cambios en la capa de hielo y el hielo marino en ambos polos del planeta. En la primavera de 2012, IceBridge llevó a cabo ...

  5. El papel de la NASA en la comprensión del cambio

    NASA Video Gallery

    El clima de la Tierra está cambiando debido a la actividad humana. Conoce el papel que juega la NASA para ayudar a comprender el clima y el cambio climático junto con Gilberto Colón, asistente espe...

  6. Attic dust analysis approach for evaluation of heavy metal deposition in the El Paso Del Norte Region

    Technology Transfer Automated Retrieval System (TEKTRAN)

    During the 90 years from 1887 to 1977, a large smelter in the El Paso Del Norte region of North America smelted many ores including copper, lead, and zinc. In order to identify the patterns of heavy metal dispersion from the smelter, we sampled attic dust and dust from undisturbed surfaces in 15 bu...

  7. 3 CFR 8946 - Proclamation 8946 of March 25, 2013. Establishment of the Río Grande del Norte National Monument

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 3 The President 1 2014-01-01 2014-01-01 false Proclamation 8946 of March 25, 2013. Establishment of the Río Grande del Norte National Monument 8946 Proclamation 8946 Presidential Documents.... More recent artifacts and images mark the passage of settlers and Hispanic explorers dating back to...

  8. Willingness to Pay for Dog Rabies Vaccine and Registration in Ilocos Norte, Philippines (2012)

    PubMed Central

    Birhane, Meseret G.; Miranda, Mary Elizabeth G.; Dyer, Jessie L.; Blanton, Jesse D.; Recuenco, Sergio

    2016-01-01

    Background The Philippines is one of the developing countries highly affected by rabies. Dog vaccination campaigns implemented through collaborative effort between the government and NGOs have played an important role in successfully reducing the burden of disease within the country. Nevertheless, rabies vaccination of the domestic animal population requires continuous commitment not only from governments and NGOs, but also from local communities that are directly affected by such efforts. To create such long-term sustained programs, the introduction of affordable dog vaccination and registration fees is essential and has been shown to be an important strategy in Bohol, Philippines. The aim of this study, therefore, was to estimate the average amount of money that individuals were willing to pay for dog vaccination and registration in Ilocos Norte, Philippines. This study also investigated some of the determinants of individuals’ willingness to pay (WTP). Methods A cross-sectional questionnaire was administered to 300 households in 17 municipalities (out of a total of 21) selected through a multi-stage cluster survey technique. At the time of the survey, Ilocos Norte had a population of approximately 568,017 and was predominantly rural. The Contingent Valuation Method was used to elicit WTP for dog rabies vaccination and registration. A ‘bidding game’ elicitation strategy that aims to find the maximum amount of money individuals were willing to pay was also employed. Data were collected using paper-based questionnaires. Linear regression was used to examine factors influencing participants’ WTP for dog rabies vaccination and registration. Key Results On average, Ilocos Norte residents were willing to pay 69.65 Philippine Pesos (PHP) (equivalent to 1.67 USD in 2012) for dog vaccination and 29.13PHP (0.70 USD) for dog registration. Eighty-six per cent of respondents were willing to pay the stated amount to vaccinate each of their dogs, annually. This study

  9. Geology and depositional environments of the Guadalupian rocks of the northern Del Norte Mountains, West Texas

    USGS Publications Warehouse

    Rudine, S.F.; Wardlaw, B.R.; Rohr, D.M.; Grant, R.E.

    2000-01-01

    The Guadalupian rocks of the northern Del Norte Mountains were deposited in a foreland basin between land of the Marathon orogen and a carbonate shoal established on the geanticline separating the foreland basin from the Delaware basin. Deposition was alternately influenced by coarse clastic input from the orogen and carbonate shoal, which interrupted shallow basinal siltstone depletion. Relatively deeper-water deposition is characterized by carbonate input from the shoal, and relatively shallow-water deposition is characterized by sandstone input from the orogen. Deposition was in five general transgressive-regressive packages that include (1) the Road Canyon Formation and the first siltstone member and first sandstone member of the Word Formation, (2) the second siltstone member, Appel Ranch Member, and limy sandy siltstone member of the Word Formation, (3) the Vidrio Formation, (4) the lower and part of the middle members of the Altuda Formation, and (5) part of the middle and upper members of the Altuda Formation.

  10. [Social representations of generic drugs by consumers from Natal, Rio Grande do Norte, Brazil].

    PubMed

    Carvalho, Maria Cleide Ribeiro Dantas de; Accioly Júnior, Horácio; Raffin, Fernanda Nervo

    2006-03-01

    This paper aimed to determine the central and peripheral roles of consumers' social representations concerning generic drugs, establishing mechanisms that could be used to improve policies for this type of medication in Brazil. The research was done from April 2002 to February 2003 in the city of Natal, Rio Grande do Norte, with 400 consumers. The study employed the word association test with the words "generic drug" as the inductive stimulus. Evocation of three words was requested, according to the access strategy to Vergès' Central Nucleus. Data analysis used the EVOC 2000 software and the content analysis proposed by Bardin. The results demonstrated that the central nucleus consisted of the categories price, quality, and pharmaceutical equivalence, while the peripheral system was represented by the categories option, effectiveness, government, social benefit, and accessibility.

  11. Utilization of LANDSAT orbital imagery in the soil survey processes at Rio Grande do Norte state

    NASA Technical Reports Server (NTRS)

    Formaggio, A. R. (Principal Investigator)

    1984-01-01

    Pedologic photointerpretative criteria adapted to LANDSAT orbital imagery were used: drainage (pattern, integration degree, density and uniformity degree); relief (pattern, dissection degree and crest lines); photographic texture, photographic tonnality, and the land use (type, glebas size and intensity of use). The performance of the imagery as an auxiliar tool in the soil survey processes, at Rio Grande do Norte State was evaluated. The drainage and relief elements were easily extracted from the imagery and also ones that provided the greatest deductive possibility about pedologic boundaries. Other analyzed criteria were considered only auxiliaries, corroborating some soil limits in the evidences convergence phase. The principal pedologic dominions of the 30,000 sq km are covered by the same LANDSAT image (WRS 359/16) were delimited with good precision: (1) fluvial plains, beaches, dunes and coastal mangroves; (2) North Coast line Plateau; (3) Acu Sandstone Zone; (4) residual plateaus of the Tertiary; and (6) plains of the embasement.

  12. Dengue epidemic in the State of Rio Grande do Norte, Brazil, in 1997.

    PubMed

    Cunha, R V; Schatzmayr, H G; Miagostovich, M P; Barbosa, A M; Paiva, F G; Miranda, R M; Ramos, C C; Coelho, J C; dos Santos, F B; Nogueira, R M

    1999-01-01

    During 1997 a large dengue epidemic occurred in Rio Grande do Norte, a State in north-east Brazil. The co-circulation of dengue virus type 1 and dengue virus type 2 was demonstrated by virus isolation in Aedes albopictus clone C6/36 cell-line and by reverse transcriptase-polymerase chain reaction (RT-PCR). IgM capture enzyme-linked immunosorbent assay confirmed 52.3% of the 8105 studied cases and dengue antigen was demonstrated by immunohistochemical reaction on hepatocytes from 2 out of 5 fatal cases studied. Individual risk factors for development of dengue haemorrhagic fever/dengue shock syndrome, such as hypertension, diabetes mellitus and bronchial asthma, are discussed.

  13. The 1996 Paso del Norte Ozone Study: analysis of meteorological and air quality data that influence local ozone concentrations.

    PubMed

    MacDonal, C P; Roberts, P T; Main, H H; Dye, T S; Coe, D L; Yarbrough, J

    2001-08-10

    The 1996 Paso del Norte Ozone Study and subsequent data analyses were implemented to develop an understanding of the chemical and physical processes which lead to high concentrations of ozone in the Paso del Norte study area which includes El Paso County, Texas, Sunland Park, New Mexico, and Ciudad Juárez, Mexico. Both the data and data analysis results are being used to support photochemical grid modeling. El Paso County and Sunland Park fail to meet the National Ambient Air Quality Standard (NAAQS) for ozone, and neighboring Ciudad Juárez fails to meet the Mexican ambient standard for ozone. This paper summarizes the measurement campaigns of the 1996 Paso del Norte Ozone Study and the findings and conclusions that arose from subsequent data analyses. Data analyses showed that high ozone concentrations resulted from a combination of conditions, including high surface temperatures, strong sunlight with few clouds, light surface winds and high concentrations of ozone precursors at ground level in the morning, and slow convective boundary layer (CBL) growth. Synoptic-scale meteorological conditions observed during high ozone episodes included an aloft high-pressure system and aloft warming. Aloft carryover of ozone and ozone precursors did not significantly contribute to high concentrations of ozone at the surface.

  14. Monitoring and Modelling Glacier Melt and Runoff on Juncal Norte Glacier, Aconcagua River Basin, Central Chile

    NASA Astrophysics Data System (ADS)

    Pellicciotti, F.; Helbing, J. F.; Araos, J.; Favier, V.; Rivera, A.; Corripio, J.; Sicart, J. M.

    2006-12-01

    Results from a recent glacio-meteorological experiment on the Juncal Norte glacier, in central Chile, are presented. Melt water is a crucial resource in the Central Andes, as it provides drinking water, water for agriculture and for industrial uses. There is also increasing competition for water use and allocation, as water demands from mining and industry are rising. Assessing water availability in this region and its relation with climatic variations is therefore crucial. The Dry Central Andes are characterised by a climatic setting different from that of the Alps and the subtropical Andes of Bolivia and Peru. Summers are very dry and stable, with precipitation close to zero and low relative humidity. Solar radiation is very intense, and plays a key role in the energy balance of snow covers and glaciers. The main aim of this study is to investigate the glacier-climate interaction in this area, with particular attention devoted to advanced modelling techniques for the spatial redistribution of meteorological variables, in order to gain an accurate picture of the ablation processes typical of these latitudes. During the ablation season 2005/2006, an extensive field campaign was conducted on the Juncal Norte glacier, aimed at monitoring the melt and runoff generation processes on this remote glacier in the dry Andes. Melt rates, runoff at the snout, meteorological variables over and near the glacier, GPS data and glacier topography were recorded over the entire ablation season. Using this extensive and accurate data set, the spatial and temporal variability of the meteorological variables that drive the melt process on the glacier is investigated, together with the process of runoff generation. An energy balance model is used to simulate melt across the glacier, and special attention is devoted to the modelling of the solar radiation energy flux. The components of the energy balance are compared with those of Alpine basins. The validity of parameterisations of the

  15. Meteorological Simulations of Ozone Episode Case Days during the 1996 Paso del Norte Ozone Study

    SciTech Connect

    Brown, M.J.; Costigan, K.; Muller, C.; Wang, G.

    1999-02-01

    Meteorological simulations centered around the border cities of El Paso and Ciudad Juarez have been performed during an ozone episode that occurred on Aug. 13,1996 during the 1996 Paso del Norte Ozone Study field campaign. Simulations were petiormed using the HOTMAC mesoscale meteorological model using a 1,2,4, and 8 km horizontal grid size nested mesh system. Investigation of the vertical structure and evolution of the atmospheric boundary layer for the Aug. 11-13 time period is emphasized in this paper. Comparison of model-produced wind speed profiles to rawirisonde and radar profiler measurements shows reasonable agreement. A persistent upper-level jet was captured in the model simulations through data assimilation. In the evening hours, the model was not able to produce the strong wind direction shear seen in the radar wind profiles. Based on virtual potential temperature profile comparisons, the model appears to correctly simulate the daytime growth of the convective mixed layer. However, the model underestimates the cooling of the surface layer at night. We found that the upper-level jet significantly impacted the turbulence structure of the boundary layer, leading to relatively high turbulent kinetic energy (tke) values aloft at night. The model indicates that these high tke values aloft enhance the mid-morning growth of the boundary layer. No upper-level turbulence measurements were available to verify this finding, however. Radar profiler-derived mixing heights do indicate relatively rapid morning growth of the mixed layer.

  16. Dating the Late Archaic occupation of the Norte Chico region in Peru.

    PubMed

    Haas, Jonathan; Creamer, Winifred; Ruiz, Alvaro

    2004-12-23

    The Norte Chico region on the coast of Peru north of Lima consists of four adjacent river valleys--Huaura, Supe, Pativilca and Fortaleza--in which archaeologists have been aware of a number of apparently early sites for more than 40 years (refs 1- 3). To clarify the early chronology in this region, we undertook fieldwork in 2002 and 2003 to determine the dates of occupation of sites in the Fortaleza and Pativilca valleys. Here we present 95 new radiocarbon dates from a sample of 13 of more than 20 large, early sites. These sites share certain basic characteristics, including large-scale monumental architecture, extensive residential architecture and a lack of ceramics. The 95 new dates confirm the emergence and development of a major cultural complex in this region during the Late Archaic period between 3000 and 1800 calibrated calendar years bc. The results help to redefine a broader understanding of the respective roles of agricultural and fishing economies in the beginnings of civilization in South America.

  17. The Influence of Photolysis Rate Constants in Ozone Production for the Paso del Norte Region

    NASA Astrophysics Data System (ADS)

    Becerra, Fernando; Fitzgerald, Rosa

    2012-03-01

    In this research work we are focusing on understanding the relationship between photolysis rates and the photochemical ozone changes observed in the Paso del Norte region. The city of El Paso, Texas together with Ciudad Juarez, Mexico, forms the largest contiguous bi-national metropolitan area. This region suffers year-round ozone pollution events, and a better understanding is needed to mitigate them. Previous studies have found that ambient ozone concentrations tend to be higher on weekends rather than on weekdays, this phenomenon being referred to, as the ``weekend effect.'' If the ozone standard is exceeded more frequently on weekends, then this phenomenon must be considered in the design of ozone control strategies. In this work we investigate some of the most representative weekend ozone episodes at El Paso, TX, during the years 2009, 2010 and 2011 using the ozone photolysis rates. In this research the TUV radiative-transfer model is used to calculate the local photolysis rates and a UV MFRSR instrument is used to obtain experimental parameters. Seasonal variations and the weekday-weekend effect is studied. The results of this research will help to understand the underlying behavior of the photolysis rate constants when different atmospheric conditions are present.

  18. Sensitivity Modeling Study for an Ozone Occurrence during the 1996 Paso Del Norte Ozone Campaign

    PubMed Central

    Lu, Duanjun; Reddy, Remata S.; Fitzgerald, Rosa; Stockwell, William R.; Williams, Quinton L.; Tchounwou, Paul B.

    2008-01-01

    Surface ozone pollution has been a persistent environmental problem in the US and Europe as well as the developing countries. A key prerequisite to find effective alternatives to meeting an ozone air quality standard is to understand the importance of local anthropogenic emissions, the significance of biogenic emissions, and the contribution of long-range transport. In this study, an air quality modeling system that includes chemistry and transport, CMAQ, an emission processing model, SMOKE, and a mesoscale numerical meteorological model, WRF, has been applied to investigate an ozone event occurring during the period of the 1996 Paso del Norte Ozone Campaign. The results show that the modeling system exhibits the capability to simulate this high ozone occurrence by providing a comparable temporal variation of surface ozone concentration at one station and to capture the spatial evolution of the event. Several sensitivity tests were also conducted to identify the contributions to high surface ozone concentration from eight VOC subspecies, biogenic VOCs, anthropogenic VOCs and long-range transportation of ozone and its precursors. It is found that the reductions of ETH, ISOP, PAR, OLE and FORM help to mitigate the surface ozone concentration, and like anthropogenic VOCs, biogenic VOC plays a nonnegligible role in ozone formation. But for this case, long-range transport of ozone and its precursors appears to produce an insignificant contribution. PMID:19190351

  19. Albedo estimation using near infrared photography at Glaciar Norte of Citlaltepetl Volcano (Mexico).

    NASA Astrophysics Data System (ADS)

    Ontiveros, Guillermo; Delgado-Granados, Hugo

    2015-04-01

    In this work we show preliminary results of the application of the methodology proposed by Corripio (2004) for albedo estimation of a glacial surface using oblique photography. This analysis was performed for the Glaciar Norte of Citlaltepetl volcano (Mexico), using images obtained with a modified digital camera for capturing the portion of the near infrared spectrum starting at 950 nm and a digital elevation model with a grid of 2 m. The main goal was to obtain a picture of the spatial distribution of albedo on the glacier, in order to find out if there was any morphological evidence of the influence of the glacier energy balance. Some of the obtained results show a certain spatial distribution with comparatively higher albedo values at the lower parts of the glacier as compared with higher parts. The higher values may correspond to different metamorphism of snow/ice at different heights due to the effects of lower slope. Corripio, J. G. (2004). Snow surface albedo estimation using terrestrial photography. International journal of remote sensing, 25(24), 5705-5729.

  20. Meteorological simulations of boundary-layer structure during the 1996 Paso del Norte Ozone Study.

    PubMed

    Brown, M J; Muller, C; Wang, G; Costigan, K

    2001-08-10

    Meteorological simulations centered around the border cities of El Paso and Ciudad Juárez have been performed during an ozone episode that occurred on August 13, 1996 during the 1996 Paso del Norte Ozone Study field campaign. Simulations were performed using the HOTMAC boundary-layer meteorological model using a 1, 2, 4 and 8-km horizontal grid size nested mesh system. Investigation of the vertical structure and evolution of the atmospheric boundary layer for the August 12-14 time period is emphasized in this paper due to its suspected importance in precipitating the ozone episode [Sci Total Environ (2001)]. This period was characterized by a slowly-evolving high pressure system over the region, a persistent upper-level jet at 2500-3500 m above ground level (agl), deep daytime mixed layer heights of 3500 m depth and unusually deep nighttime stable layers extending up to 2500 m above the ground. The fact that the boundary-layer growth stalled on the morning of August 13 relative to that on August 12 has been suggested as a possible reason for the ozone episode on the 13th. In addition, relatively weak surface-level winds were measured on August 13. Using both model results and experimental data we hypothesize explanations for the slower mixed-layer growth on the morning of the 13th and the stronger surface-level winds found on the 12th and 14th.

  1. Lithologic controls on mineralization at the Lagunas Norte high-sulfidation epithermal gold deposit, northern Peru

    NASA Astrophysics Data System (ADS)

    Cerpa, Luis M.; Bissig, Thomas; Kyser, Kurt; McEwan, Craig; Macassi, Arturo; Rios, Hugo W.

    2013-06-01

    The 13.1-Moz high-sulfidation epithermal gold deposit of Lagunas Norte, Alto Chicama District, northern Peru, is hosted in weakly metamorphosed quartzites of the Upper Jurassic to Lower Cretaceous Chimú Formation and in overlying Miocene volcanic rocks of dacitic to rhyolitic composition. The Dafne and Josefa diatremes crosscut the quartzites and are interpreted to be sources of the pyroclastic volcanic rocks. Hydrothermal activity was centered on the diatremes and four hydrothermal stages have been defined, three of which introduced Au ± Ag mineralization. The first hydrothermal stage is restricted to the quartzites of the Chimú Formation and is characterized by silice parda, a tan-colored aggregate of quartz-auriferous pyrite-rutile ± digenite infilling fractures and faults, partially replacing silty beds and forming cement of small hydraulic breccia bodies. The δ34S values for pyrite (1.7-2.2 ‰) and digenite (2.1 ‰) indicate a magmatic source for the sulfur. The second hydrothermal stage resulted in the emplacement of diatremes and the related volcanic rocks. The Dafne diatreme features a relatively impermeable core dominated by milled slate from the Chicama Formation, whereas the Josefa diatreme only contains Chimú Formation quartzite clasts. The third hydrothermal stage introduced the bulk of the mineralization and affected the volcanic rocks, the diatremes, and the Chimú Formation. In the volcanic rocks, classic high-sulfidation epithermal alteration zonation exhibiting vuggy quartz surrounded by a quartz-alunite and a quartz-alunite-kaolinite zone is observed. Company data suggest that gold is present in solid solution or micro inclusions in pyrite. In the quartzite, the alteration is subtle and is manifested by the presence of pyrophyllite or kaolinite in the silty beds, the former resulting from relatively high silica activities in the fluid. In the quartzite, gold mineralization is hosted in a fracture network filled with coarse alunite

  2. Atmospheric volatile organic compound measurements during the 1996 Paso del Norte Ozone Study.

    PubMed

    Seila, R L; Main, H H; Arriaga, J L; Martínez, G; Ramadan, A B

    2001-08-10

    Ambient air VOC samples were collected at surface air quality monitoring sites, near sources of interest, and aloft on the US (El Paso) and Mexican (Ciudad Juárez) side of the border during a six-week period of the 1996 Paso del Norte Ozone Study. Samples were collected at five sites, three on the US side and two on the Mexican side, during nine intensive operation days when high ozone levels were forecast for the area. Six other sites were sampled to characterize up-wind, down-wind and other emission sources. Samples for determining source profiles were collected for rush hour traffic, propane-powered bus exhaust, automobile paint shop emissions, propane fuels, and industrial manufacturing in Cd. Juárez and a refinery in El Paso. Most samples were collected in electro-polished stainless steel canisters for determination of C2 to C(10+) hydrocarbons by GC-FID. Carbonyl samples were collected on DNPH impregnated cartridges at three surface sites during aircraft flights and analyzed by HPLC. This paper presents the spatial and temporal characteristics of VOC species concentrations and compositions to examine the differences and similarities of the various locations and time periods. Overall surface, total non-methane hydrocarbon values ranged from 0.1 to 3.4 ppmC with the highest concentrations being recorded in the morning and evening at five vehicle-dominated sites, three in Cd. Juárez and two in El Paso. Toluene in El Paso samples and propane, which is used as a cooking and transportation fuel in Cd. Juárez, were the most abundant hydrocarbons. The most abundant carbonyls were acetaldehyde, acetone and formaldehyde.

  3. Atmospheric volatile organic compound measurements during the 1996 Paso del Norte Ozone Study.

    PubMed

    Seila, R L; Main, H H; Arriaga, J L; Martínez, G; Ramadan, A B

    2001-08-10

    Ambient air VOC samples were collected at surface air quality monitoring sites, near sources of interest, and aloft on the US (El Paso) and Mexican (Ciudad Juárez) side of the border during a six-week period of the 1996 Paso del Norte Ozone Study. Samples were collected at five sites, three on the US side and two on the Mexican side, during nine intensive operation days when high ozone levels were forecast for the area. Six other sites were sampled to characterize up-wind, down-wind and other emission sources. Samples for determining source profiles were collected for rush hour traffic, propane-powered bus exhaust, automobile paint shop emissions, propane fuels, and industrial manufacturing in Cd. Juárez and a refinery in El Paso. Most samples were collected in electro-polished stainless steel canisters for determination of C2 to C(10+) hydrocarbons by GC-FID. Carbonyl samples were collected on DNPH impregnated cartridges at three surface sites during aircraft flights and analyzed by HPLC. This paper presents the spatial and temporal characteristics of VOC species concentrations and compositions to examine the differences and similarities of the various locations and time periods. Overall surface, total non-methane hydrocarbon values ranged from 0.1 to 3.4 ppmC with the highest concentrations being recorded in the morning and evening at five vehicle-dominated sites, three in Cd. Juárez and two in El Paso. Toluene in El Paso samples and propane, which is used as a cooking and transportation fuel in Cd. Juárez, were the most abundant hydrocarbons. The most abundant carbonyls were acetaldehyde, acetone and formaldehyde. PMID:11523535

  4. Modeling the Crust and Upper Mantle in Northern Beata Ridge (CARIBE NORTE Project)

    NASA Astrophysics Data System (ADS)

    Núñez, Diana; Córdoba, Diego; Cotilla, Mario Octavio; Pazos, Antonio

    2016-05-01

    The complex tectonic region of NE Caribbean, where Hispaniola and Puerto Rico are located, is bordered by subduction zone with oblique convergence in the north and by incipient subduction zone associated to Muertos Trough in the south. Central Caribbean basin is characterized by the presence of a prominent topographic structure known as Beata Ridge, whose oceanic crustal thickness is unusual. The northern part of Beata Ridge is colliding with the central part of Hispaniola along a transverse NE alignment, which constitutes a morphostructural limit, thus producing the interruption of the Cibao Valley and the divergence of the rivers and basins in opposite directions. The direction of this alignment coincides with the discontinuity that could explain the extreme difference between west and east seismicity of the island. Different studies have provided information about Beata Ridge, mainly about the shallow structure from MCS data. In this work, CARIBE NORTE (2009) wide-angle seismic data are analyzed along a WNW-ESE trending line in the northern flank of Beata Ridge, providing a complete tectonic view about shallow, middle and deep structures. The results show clear tectonic differences between west and east separated by Beata Island. In the Haiti Basin area, sedimentary cover is strongly influenced by the bathymetry and its thickness decreases toward to the island. In this area, the Upper Mantle reaches 20 km deep increasing up to 24 km below the island where the sedimentary cover disappears. To the east, the three seamounts of Beata Ridge provoke the appearance of a structure completely different where sedimentary cover reaches thicknesses of 4 km between seamounts and Moho rises up to 13 km deep. This study has allowed to determine the Moho topography and to characterize seismically the first upper mantle layers along the northern Beata Ridge, which had not been possible with previous MCS data.

  5. Hydrocarbon source apportionment for the 1996 Paso del Norte Ozone Study.

    PubMed

    Fujita, E M

    2001-08-10

    The 1996 Paso del Norte (PdN) ozone study was conducted to improve current understanding of the significant meteorological and air quality processes that lead to high concentrations of ozone in El Paso, Texas (USA) and Ciudad Juárez, Chihuahua (Mexico). Two-hour canister samples were collected five times daily at 05.00-07.00 h, 07.00-09.00 h, 09.00-11.00 h, 11.00-13.00 h, and 15.00-17.00 h MST during intensive study periods at one urban and one rural site on each side of the border. An automated gas chromatograph was operated at one site in central El Paso. Source profiles (the fractional chemical composition of emissions) from motor vehicles, gasoline, liquefied petroleum gas, and commercial natural gas were combined with source profiles from other studies for input to the Chemical Mass Balance (CMB) receptor model to apportion the measured non-methane hydrocarbons (NMHC) to sources. On-road vehicle emissions accounted for one-half to two-thirds of the NMHC in Ciudad Juárez and El Paso with the highest contributions occurring during the morning and afternoon commute periods. Emissions from diesel exhaust contributed approximately 2-3% of NMHC in Ciudad Juárez and less than 2% in El Paso. The average sum of liquid gasoline and gasoline vapor increased during the day in Ciudad Juárez from 2% at 06.00 h to approximately 12% at 16.00 h. Diurnal and day-of-the-week patterns in the liquid gasoline contributions are essentially identical to the corresponding patterns for motor vehicle exhaust, which suggest that a large fraction of the liquid gasoline contribution may be associated with tailpipe emissions rather than evaporative emissions from motor vehicles or industrial sources. Including the sum of the two sources put the upper limit for tailpipe contributions at 60-70% of NMHC. PMID:11516134

  6. GIS based Relative Tsunami Hazard Maps for Northern California, Humboldt and Del Norte Counties

    NASA Astrophysics Data System (ADS)

    Patton, J. R.; Dengler, L. A.

    2004-12-01

    Tsunami hazard maps are generated using a geographical information systems (GIS) approach to depict the relative tsunami hazard of coastal Humboldt and Del Norte Counties in northern California. Maps are composed for the Humboldt Bay, Eel River, and Crescent City regions and available online at http://www.humboldt.edu/~geodept/earthquakes/rctwg/toc.html . In contrast to previous mapping efforts that utilize a single line to represent inundation, hazard is displayed gradationally. A 2.5D surface is constructed to represent this hazard. Elevation, normally used for 2.5D surfaces, is substituted with hazard units. Criteria boundaries are used to separate regions of increasing hazard. Criteria boundaries are defined based on numerical modeling, paleoseismic studies, historical flooding, FEMA Q3 flood maps, and impacts of recent tsunamis elsewhere. Zones are constructed to further adjust the criteria with respect to a physically determined variable hazard (e.g. proximity to open ocean). A triangular irregular network (TIN) is constructed using hazard criteria boundaries as breaklines. Fabricated points are necessary to construct a hazard surface and are placed where criteria boundaries diverge or where hazard is nonlinear between criteria boundaries. Hazard is displayed as a continuous gradational color scale ranging from red (high hazard) through orange (medium), yellow (low) to gray (no hazard). The maps are GIS based to facilitate ready adaptation by planners and emergency managers. The maps are intended for educational purposes, to improve awareness of tsunami hazards and to encourage emergency planning efforts of local and regional organizations by illustrating the range of possible tsunami events.

  7. The origin of bajaites from the San Borja Volcanic Field in Baja California Norte, Mexico

    NASA Astrophysics Data System (ADS)

    Bibbins, M.; Castillo, P.; Negrete-Aranda, R.; Canon-Tapia, E.; Alva-Valdivia, L. M.; Garcia-Amador, B. I.

    2014-12-01

    Baja California is a peninsula in western Mexico that was formed through a dynamic tectonic history of convergence, rifting and strike slip motion. At approximately 13 Ma, subduction along the northwestern coast of Mexico stopped, subsequently the Gulf of California opened and strike slip faults formed parallel to the ancient trench. After subduction ended, arc-related magmatism continued as the Baja peninsula was forming until about 2 Ma. The lavas erupting in the peninsula have variable compositions including calc-alkalic and tholeiitic arc basalts and bajaites. The term bajaite is a collective term for the high magnesian andesites and basaltic andesites in Baja California that have adakitic characteristics. Adakites, on the other hand, are arc lavas characterized by high silica content and Sr/Y and La/Yb ratios; these are generally believed to have formed through melting of subducted basaltic crust. The origin of bajaite is controversial. It has been proposed as product of melting of either subducted basaltic crust primarily because of its adakitic characteristics (Saunders et al, 1987) or metasomatized mantle wedge because of its arc lava-like geochemical features (Castillo, 2008); it has also been proposed as a mixture of differentiated and mafic arc lavas (Streck et al, 2007). The composition of bajaite is similar to that of the bulk continental crust and, thus, its true origin can shed light on the mechanism for continental growth. In this study, we use geochemical techniques to resolve some of the controversies surrounding the origin of bajaite. We analyze the petrographic, major element, trace element, and Sr-Nd-Pb isotopic compositions of bajaites from the San Borja Volcanic Field in Baja California Norte, Mexico to better constrain their petrogenetic history and origin.

  8. El cambio de vida: conceptualizations of menopause and midlife among urban Latina women.

    PubMed

    Villarruel, Antonia M; Harlow, Sioban D; Lopez, Maria; Sowers, MaryFran

    2002-01-01

    The experience of menopause among Latina women has seldom been described. The purpose of this study was to conceptualize and contextualize the experience of menopause from the perspective of Latina women. A series of focus group sessions were conducted with postmenopausal Latina women living in a large midwestern city. Themes derived from content analysis included: (a) The primacy of health and the importance of harmony and balance; (b) El cambio de vida--something you have to go through; and (c) This time is for me: reorientation and restructuring. Rediscovery and redefinition as opposed to being defined by physical symptoms marked this life phase. Implications of study findings are discussed within the context of an emerging biopsychosocial perspective of midlife and menopause transition.

  9. Modelling distributed ablation on Juncal Norte Glacier, dry Andes of central Chile

    NASA Astrophysics Data System (ADS)

    Carenzo, Marco; Pellicciotti, Francesca; Helbing, Jakob; Dadic, Ruzica; Burlando, Paolo

    2010-05-01

    In the Aconcagua River Basin, in the dry Andes of central Chile, water resources in summer originate mostly from snow and ice glacier melt. Summer seasons are dry and stable, with precipitation close to zero, low relative humidity and very intense solar radiation. The region's economic activities are dependent on these water resources, but their assessment is still incomplete and an effort is needed to evaluate present and future changes in water from glacier and seasonal snow covers in this area. The main aim of this paper is to simulate glacier melt and runoff from Juncal Norte Glacier, in the upper Aconcagua Basin, using models of various complexity and data requirement. We simulate distributed glacier ablation for two seasons using an energy-balance model (EB) and an enhanced temperature-index model (ETI). Meteorological variables measured at Automatic Weather Stations (AWSs) located on and off-glacier are extrapolated from point observations to the glacier-wide scale. Shortwave radiation is modelled with a parametric model taking into account shading, reflection from slopes and atmospheric transmittance. In the energy-balance model, the longwave radiation flux is computed from Stefan-Boltzmann relationships and turbulent fluxes are calculated using the bulk aerodynamic method. The EB model includes subsurface heat conduction and gravitational redistribution of snow. Glacier runoff is modelled using a linear reservoir approach accounting for the temporal evolution of the system. Hourly simulations of glacier melt are validated against ablation observations (ultrasonic depth gauge and ablation stakes) and runoff measured at the glacier snout is compared to a runoff record obtained from a combination of radar water level measurements and tracer experiments. Results show that extrapolation of meteorological input data, and of temperature in particular, is the largest source of model uncertainty, together with snow water equivalent initial conditions. We explore

  10. The 1996 and 1997 Paso del Norte ozone studies: An overview of the field studies and data analyses

    SciTech Connect

    MacDonald, C.P.; Roberts, P.T.; Main, H.H.; Dye, T.S.; Coe, D.L.; Yarbrough, J.

    1999-07-01

    This paper summarizes the measurement campaigns of the 1996 and 1997 Paso del Norte Ozone Studies, the resultant data sets, and the findings and conclusions that arose from subsequent data analyses. The purpose of these data analyses was to develop an understanding of the significant chemical and physical processes that lead to high concentrations of ozone in the Paso del Norte study region which includes El Paso, TX; Sunland Park, NM; and Juarez, Mexico. High ozone concentrations resulted from a combination of conditions, including slow convective boundary layer (CBL) growth, reduced CBL depth, light surface winds, and high concentrations of ozone precursor at ground level in the morning. Synoptic-scale meteorological conditions observed during high ozone episodes included an upstream aloft high-pressure system, and aloft warming. Aloft carryover of ozone and ozone precursors did not significantly contribute to the surface ozone concentration. Furthermore, hydrocarbon and NO{sub x} data, although spatially limited, showed that the system is more often NO{sub x}-limited rather than VOC-limited.

  11. Modified Team-Based Learning Strategy to Improve Human Anatomy Learning: A Pilot Study at the Universidad Del Norte in Barranquilla, Colombia

    ERIC Educational Resources Information Center

    Martínez, Emilio G.; Tuesca, Rafael

    2014-01-01

    As part of an institutional program sponsored by the Centre for Teaching Excellence at the Universidad del Norte, Barranquilla, Colombia, we developed an educational research study on two sessions of human anatomy in which we combined team-based learning (TBL) and the use of iPads. Study data included the TBL, assessments applied during the…

  12. Animal-based folk remedies sold in public markets in Crato and Juazeiro do Norte, Ceará, Brazil

    PubMed Central

    Ferreira, Felipe S; Brito, amuel V; Ribeiro, Samuel C; Saraiva, Antônio AF; Almeida, Waltécio O; Alves, Rômulo RN

    2009-01-01

    Background Human communities consistently develop a detailed knowledge of the therapeutical and medicinal properties of the local flora and fauna, and these folk remedies often substitute medicines produced by the pharmaceutical industry. Animals (and their derived products) are essential ingredients in the preparation of many traditional remedies. The present work prepared an inventory of the animals sold in public markets in the cities of Crato and Juazeiro do Norte, Ceará State, Brazil. Methods Information was obtained through the use of semi-structured questionnaires in interviews held with 27 merchants of medicinal animals (18 in the municipality of Juazeiro do Norte [11 men and 7 women] and 9 people in the municipality of Crato [6 men and 3 women]). We calculated the Informant Consensus Factor (ICF) to determine the consensus over which species are effective for particular ailments, as well as the species Use Value (UV) to determine the extent of utilization of each species. Results A total of 31 animal species, distributed among 21 families were identified as being used medicinally. The taxa most represented were: insects (8 species), mammals (7), fish (5), reptiles (5) and birds (4). The animals sold in these markets are used to treat a total of 24 ailments, with rheumatism, asthma, and inflammations having the largest numbers of citations. Three species not previously reported as having medicinal use were encountered: Leporinus steindachneri (utilized for treating cholesterol problems), Gryllus assimilis (utilized in treating urinary infections), and Phrynops tuberosus (used to treat asthma, rheumatism and bruises). Conclusion The composition of the local fauna, the popular culture, and commercial considerations are factors that maintain and drive the market for therapeutic animal products – and the lack of monitoring and regulation of this commerce is worrisome from a conservationist perspective. A detailed knowledge of the fauna utilized in

  13. Solid inclusions of magmatic halite and sylvite in felsic granitoids, Sierra Norte, Córdoba, Argentina

    NASA Astrophysics Data System (ADS)

    Lira, Raúl; Poklepovic, María F.; Dorais, Michael J.

    2007-12-01

    This study provides evidence for the existence of halite and sylvite solid inclusions in igneous quartz and feldspars, the first to be reported in intrusive rocks, and to partially constrain the physicochemical environment that lets halides crystallize under magmatic conditions. Halite and sylvite solid inclusions were found included in quartz and feldspars from a micrographic-granophyric assemblage in a miarolitic aplite and, rarer, in alkali-feldspar from a miarolitic monzogranite. Monzogranite and aplite represent I-type, K-enriched postcollisional rocks of the Late Cambrian-Early Ordovician Sierra Norte-Ambargasta batholith in the Eastern Sierras Pampeanas. Both granitoids fall among the most evolved felsic rocks of the batholith, with aplite approaching haplogranitic compositions. Halite is far more common than sylvite and the presence and distribution of one or both halides are erratic within the felsic intrusive bodies. Halides occur as small skeletal grains, commonly in cross-shaped aggregates of less than 50 μm. No K or Na was found at the detection limits of EDS in either halite or sylvite respectively. Textural relationships suggest that the alkali-chlorides separated from the melt near the minima along the quartz-feldspar cotectics of P H 2O > 160 < 200 MPa in a silica-, and potassium-rich magmatic system at approximately 750-700 °C, prior to the H 2O-vapor saturated miarole-forming stage. Computed ratios for the magmatic volatile phase (MVP) coexisting with melt at the early stage of aplite crystallization are: NaCl/HCl = 0.11-0.97 and KCl/HCl = 0.24-1.62, being the highest range of values (0.79-0.97 and 1.45-1.62, respectively) found in those alkali-chloride-bearing samples. Maximum HCl/ΣCl (MVP) (0.28 to 0.31) indicates higher total Cl concentration in the MVP of alkali-chloride-bearing aplites, which is much higher in the halite-free aplite samples (HCl/ΣCl (MVP) = 0.59 to 0.74). One miarolitic monzogranite sample, where halite solid inclusions

  14. Ground-water resources of the Acu Valley, Rio Grande Norte, Brazil

    USGS Publications Warehouse

    Rodis, Harry G.; de Castro Araujo, Jonas Maria.

    1968-01-01

    The Acu Valley is the lower part of the Rio Piranhas valley in the northwestern part of the State of Rio Grande do Norte, Brazil. It begins where the Rio Piranhas leaves the crystalline Precambrian rocks to flow across the outcrop of sedimentary rocks. The area considered in this report extends northward for about 45 kilometers; it is terminated arbitrarily where encroachment by sea water has contaminated the aquifer and imparted a disagreeable saline taste to the water in it. The boundary was not determined in the field, however, for lack of special equipment. Part of the extensive uplands on either side of the valley are included. This makes the total area approximately 2,500 square kilometers. The largest town, Acu, had a population of about 8,000 in 1960. The area is considered to be part of the Drought Polygon of northeast Brazil because the precipitation, although averaging 448 millimeters annually at Acu, varies widely from year to year and often is deficient for many months. The precipitation has been supplemented by use of irrigation wells, but irrigated agriculture is not yet far advanced, and the quantities of water used in irrigation are small. Geologically, the area consists of basement crystalline rocks (Precambrian), a wedge of sedimentary rocks thickening northward (Cretaceous), and alluvial sediments constituting a narrow band in the bottom of the valley (Alluvium and terrace deposits). The crystalline rocks contain water mainly in fractures and, in general, are impermeable. The sedimentary rocks of Cretaceous age comprise two units: a thick but fine-grained sandstone grading upward into siltstone and shale (Acu Sandstone), and limestone and dolomite with an included shale zone (Jandaira Limestone). The sandstone especially and the limestone to a lesser degree are ground-water reservoirs of large capacity. The limestone has been tapped at several places, but the sandstone and its contained water are practically untested and, hence, imperfectly

  15. Determination of βS haplotypes in patients with sickle-cell anemia in the state of Rio Grande do Norte, Brazil

    PubMed Central

    Cabral, Cynthia Hatsue Kitayama; Serafim, Édvis Santos Soares; de Medeiros, Waleska Rayane Dantas Bezerra; de Medeiros Fernandes, Thales Allyrio Araújo; Kimura, Elza Miyuki; Costa, Fernando Ferreira; de Fátima Sonati, Maria; Rebecchi, Ivanise Marina Moretti; de Medeiros, Tereza Maria Dantas

    2011-01-01

    βS haplotypes were studied in 47 non-related patients with sickle-cell anemia from the state of Rio Grande do Norte, Brazil. Molecular analysis was conducted by PCR/RFLP using restriction endonucleases XmnI, HindIII, HincII and HinfI to analyze six polymorphic sites from the beta cluster. Twenty-seven patients (57.5%) were identified with genotype CAR/CAR, 9 (19.1%) CAR/BEN, 6 (12.8%) CAR/CAM, 1 (2.1%) BEN/BEN, 2 (4.3%) CAR/Atp, 1 (2.1%) BEN/Atp and 1 (2.1%) with genotype Atp/Atp. The greater frequency of Cameroon haplotypes compared to other Brazilian states suggests the existence of a peculiarity of African origin in the state of Rio Grande do Norte. PMID:21931513

  16. Record of the giant sloth Valgipes bucklandi (Lund, 1839) (Tardigrada, Scelidotheriinae) in Rio Grande do Norte state, Brazil, with notes on taphonomy and paleoecology

    NASA Astrophysics Data System (ADS)

    Pereira, Isabella Caroline dos Santos; Dantas, Mário André Trindade; Ferreira, Rodrigo Lopes

    2013-04-01

    This paper presents the first record of the species Valgipes bucklandi in Rio Grande do Norte state, in the Brazilian Intertropical Region (BIR). This occurrence extends the distribution of this taxon in the BIR. Taphonomic information recovered from this finding indicated that the carcass was probably exposed in a hot and dry environment, whereas carbon isotope data revealed that V. bucklandi had a browser diet (δ13C = -10.17‰), living in more closed environments.

  17. Ore mineralogy and sulfur isotope study of the massive sulfide deposit of Filon Norte, Tharsis Mine, Spain

    NASA Astrophysics Data System (ADS)

    Kase, K.; Yamamoto, M.; Nakamura, T.; Mitsuno, C.

    1990-10-01

    The volcanogenic massive sulfide deposit of Filon Norte at Tharsis is hosted by carbonaceous black slate and connected only partly with stockwork veins. The massive ores are usually composed of fine-grained pyrite with subordinate amounts of sphalerite, chalcopyrite, galena and arsenopyrite. Monoclinic pyrrhotite sometimes occurs in massive pyritic ores in the apparently middle and upper horizons of the orebody, and siderite-rich ores are interstratified with compact pyritic ores in the apparently lower horizons. From the occurrence of monoclinic pyrrhotite, together with the FeS contents of sphalerite mostly ranging from 11 to 16 mol %, it is inferred that the sulfide minerals of the massive orebody were precipitated in euxinic muds on the sea-floor at temperatures below 250°C. The negatively shifted, highly variable δ 34S values of the massive ores and their close similarity to those of the underlying black slates strongly suggest that the sulfide sulfur of the massive orebody and the slates is cognate and biogenic.

  18. Copper uptake by Pteris melanocaulon Fée from a Copper-Gold mine in Surigao del Norte, Philippines.

    PubMed

    De la Torre, Joseph Benjamin B; Claveria, Rene Juna R; Perez, Rubee Ellaine C; Perez, Teresita R; Doronila, Augustine I

    2016-01-01

    The ability of some plants to take up metal contaminants in the soil has been of increasing interest as an environmental approach to pollution clean-up. This study aimed to assess the ability of Pteris melanocaulon for copper(Cu) uptake by determining the Cu levels in the fern vis-à-vis surrounding soil and the location of Cu accumulation within its biomass. It also aimed to add information to existing literature as P. melanocaulon are found to be less documented compared to other fern metal accumulators, such as P. vittata. The P. melanocaulon found in the Suyoc Pit of a Copper-Gold mine in Placer, Surigao del Norte, Philippines exhibited a high Bioaccumulation Factor(BF) of 4.04 and a low Translocation Factor(TF) of 0.01, suggesting more Cu accumulation in the roots (4590.22 ± 385.66 µg g(-1) Cu). Noteworthy was the Cu concentration in the rhizome which was also high (3539.44 ± 1696.35 µg g(-1) Cu). SEM/EDX analyses of the Cu content in the roots indicated high elemental %Cu in the xylem (6.95%) than in the cortex (2.68%). The high Cu content in the roots and rhizomes and the localization of Cu in the xylem manifested a potential utilization of the fern as a metallophyte for rhizofiltration and phytostabilization. PMID:26555556

  19. Characterization of beta-thalassemia mutations in patients from the state of Rio Grande do Norte, Brazil

    PubMed Central

    da Silveira, Zama Messala Luna; das Vitórias Barbosa, Maria; de Medeiros Fernandes, Thales Allyrio Araújo; Kimura, Elza Miyuki; Costa, Fernando Ferreira; de Fátima Sonati, Maria; Rebecchi, Ivanise Marina Moretti; de Medeiros, Tereza Maria Dantas

    2011-01-01

    35 unrelated individuals were studied for characterization as either heterozygous or homozygous for beta-thalassemia. Molecular analysis was done by PCR/RFLP to detect the mutations most commonly associated with beta-thalassemia (β0IVS-I-1, β+IVS-I-6, and β039). In the patients who showed none of these mutations, the beta-globin genes were sequenced. Of the 31 heterozygous patients, 13 (41.9%) had the β+IVS-I-6 mutation, 15 (48.4%) the β0IVS-I-1 mutation, 2 (6.5%) the β+IVS-I-110 mutation and 1 (3.2%) the β+IVS-I-5 mutation. IVS-I-6 was detected in the four homozygotes. The mutation in codon 39, often found in previous studies in Brazil, was not detected in the present case. This is the first study aiming at identifying mutations that determine beta-thalassemia in the state of Rio Grande do Norte. PMID:21931514

  20. The Sierra Norte-Ambargasta batholith: Late Ediacaran-Early Cambrian magmatism associated with Pampean transpressional tectonics

    NASA Astrophysics Data System (ADS)

    Iannizzotto, Noelia F.; Rapela, Carlos W.; Baldo, Edgardo G. A.; Galindo, Carmen; Fanning, C. M.; Pankhurst, Robert J.

    2013-03-01

    The Sierra Norte-Ambargasta batholith is one of the largest plutonic expressions of the Pampean orogeny in western Argentina. A thorough petrographic, geochemical, isotopic (Sr and Nd) and geochronological (U-Pb SHRIMP) study is reported. The batholith comprises granitoid rocks that may be subdivided into those affected by Pampean D2 dextral shearing and mylonization and those emplaced after deformation had ceased; representative samples gave U-Pb zircon ages of 537 ± 4 Ma and 530 ± 4 Ma respectively. The earlier, dominant, group were derived largely from metaluminous calc-alkaline subduction-related magmas, whereas the late granites are peraluminous. However, all have relatively high initial 87Sr/86Sr ratios (0.706 to at least 0.710, strongly negative ɛNdt values (-1.7 to -5.9) and, in some cases inherited 600 Ma and 970 Ma zircon, similar to the isotopic and zircon provenance seen in the metamorphic host rocks. A high degree of contamination of the magmas, possibly anatexis in the case of the post-mylonite granite, is related to emplacement during the latestage transpressional docking of the Pampean terrane against the Rio de la Plata craton. The absence of detrital zircon derived from the craton in either the Pampean metasedimentary host rocks or the batholith supports this collisional model for the Pampean orogen.

  1. The effect of urban canopy parameterizations on mesoscale meteorological model simulations in the Paso del Norte area

    SciTech Connect

    Brown, M.J.; Williams, M.D.

    1997-04-01

    Since mesoscale numerical models do not have the spatial resolution to directly simulate the fluid dynamics and thermodynamics in and around urban structures, urban canopy parameterizations are sometimes used to approximate the drag, heating, and enhanced turbulent kinetic energy (tke) produced by the sub-grid scale urban elements. In this paper, we investigate the effect of the urban canopy parameterizations used in the HOTMAC mesoscale meteorological model by turning the parameterizations on and off. The model simulations were performed in the Paso del Norte region, which includes the cities of El Paso and Ciudad Juarez, the Franklin and Sierra Juarez mountains, and the Rio Grande. The metropolitan area is surrounded by relatively barren scrubland and is intersected by strips of vegetation along the Rio Grande. Results indicate that the urban canopy parameterizations do affect the mesoscale flow field, reducing the magnitude of wind speed and changing the magnitude of the sensible heat flux and tke in the metropolitan area. A nighttime heat island and a daytime cool island exist when urban canopy parameters are turned on, but associated recirculation flows are not readily apparent. Model-computed solar, net, and longwave radiation values look reasonable, agreeing for the most part with published measurements.

  2. Spatial distribution of dengue disease in municipality of Mossoró, Rio Grande do Norte, using the Geographic Information System.

    PubMed

    Bessa Júnior, Francisco Narcísio; Nunes, Renan Flávio de França; de Souza, Marcos Antonio; de Medeiros, Antônio Carlos; Marinho, Maria Jocileide de Medeiros; Pereira, Wogelsanger Oliveira

    2013-09-01

    The dengue viral infection is one of the most relevant vector-borne diseases in the world. The disease can manifest in a variety of forms, from asymptomatic to a condition of dengue hemorrhagic fever (DHF). The last reported cases in Brazil correspond to 80% of the cases reported in the Americas, which emphasizes the magnitude of the problem. This study was conducted using Geographic Information System (GIS) techniques, in order to evaluate the spatial distribution of the disease in the urban area of Mossoró, Rio Grande do Norte. In the period between 2001 and 2007, 867 new cases were listed. About 85.7% of the addresses were georeferenced, with a larger number of cases, 14.8%, in the neighborhoods of Santo Antônio and Santa Delmira (north region), and 11.7% in the neighborhoods of Conjunto Vingt-Rosado and Alto de São Manoel (east region). There were 18 confirmed cases of dengue hemorrhagic fever associated with regions with the highest incidence of classic cases of the disease. The use of Geographic Information System (GIS) proved a great benefit for better visualization of the endemic, especially in elucidating the actual distribution of dengue cases in the county and providing an effective tool for planning the monitoring of the disease at a local level.

  3. Consanguinity and founder effect for Gaucher disease mutation G377S in a population from Tabuleiro do Norte, Northeastern Brazil.

    PubMed

    Chaves, R G; Pereira, L da Veiga; de Araújo, F T; Rozenberg, R; Carvalho, M D F; Coelho, J C; Michelin-Tirelli, K; Chaves, M de Freitas; Cavalcanti, G B

    2015-10-01

    Gaucher's disease (GD) is caused by a β-glucocerebrosidase deficiency, leading to the accumulation of glucocerebroside in the reticuloendothelial system. The prevalence of GD in Tabuleiro do Norte (TN) (1:4000) is the highest in Brazil. The purpose of this study was to present evidence of consanguinity and founder effect for the G377S mutation (c.1246G>A) among GD patients in TN based on enzyme, molecular and genealogical studies. Between March 2009 and December 2010, 131 subjects at risk for GD (GC in dried blood ≤2.19 nmol/h/ml) and 5 confirmed GD patients from the same community were submitted for molecular analysis to characterize the genetic profile of the population. Based on the enzymatic and molecular analysis, the subjects were classified into three categories: affected (n = 5), carrier (n = 20) and non-carrier (n = 111). All carriers were (G377S/wt). Affected subjects were homozygous (G377S/G377S). The identification of a single mutation in carriers and homozygotes from different generations, the history of the community and the genealogy study suggest that the high prevalence of GD in this population may be due to a combination of consanguinity and founder effect for the G377S mutation. PMID:25287185

  4. Gross alpha- and beta-activities in surface and ground water of Rio Grande do Norte, Brazil.

    PubMed

    Malanca, A; Repetti, M; de Macêdo, H R

    1998-07-01

    Gross alpha- and beta-activities were determined on 37 fresh water samples collected from 14 artificial basins, 13 deep drilled wells, two dug wells, two lakes, two rivers, one spring, and a tap belonging to 30 locations scattered throughout the eastern and central parts of the Brazilian state of Rio Grande do Norte. The surveyed area was about 35,000 km2 with a lithology including both crystalline (18 towns) and sedimentary (12 towns) rocks. Concentrations ranging from < 2.8 to 354 Bq m-3 and from 50.5 to 580 Bq m-3 were observed for the gross alpha- and beta-activities, respectively. For the gross beta-activity, which was always higher than the corresponding alpha-activity, the arithmetic mean with its standard deviation was 226 +/- 154 Bq m-3. In order to evaluate the radioactive dose due to the ingestion of these waters, a conservative dosimetric calculation was carried out using the dose conversion factors suggested by the ICRP. An average annual effective dose equivalent of 60 +/- 42 microSv was obtained together with a range of 14-161 microSv y-1.

  5. Characteristics of Triatomine infestation and natural Trypanosoma cruzi infection in the State of Rio Grande do Norte, Brazil.

    PubMed

    Barbosa-Silva, Andressa Noronha; Câmara, Antonia Cláudia Jácome da; Martins, Kiev; Nunes, Daniela Ferreira; Oliveira, Pedro Igor Câmara de; Azevedo, Paulo Roberto Medeiros de; Chiari, Egler; Galvão, Lúcia Maria da Cunha

    2016-02-01

    INTRODUCTION Natural and artificial ecotope infestation by the kissing bug triatomines and their colonization and infection by Trypanosoma cruzi , the Chagas disease agent, were evaluated in nine municipalities of the State of Rio Grande do Norte, Brazil. METHODS Following identification, triatomine intestinal contents were analyzed by direct microscopic examination, xenoculture, and polymerase chain reaction (PCR) for parasite detection. Trypanosoma cruzi isolates were genotyped using three different markers. RESULTS Of 842 triatomines captured, 65% were Triatoma brasiliensis , 17.8% Triatoma pseudomaculata , 12.5% Panstrongylus lutzi , and 4.7% Rhodnius nasutus . Triatoma brasiliensis and P. lutzi adults were found in the intradomicile. T. brasiliensis, T. pseudomaculata , and R. nasutus nymphs and adults were found in the peridomicile and wild environment. Intradomiciliary and peridomiciliary infestation indexes were 5.6% and 33.7%, respectively. In the peridomicile, chicken coops were the most infested ecotope. The T. cruzi triatomine infection rate was 30.2%, of which PCR detected 29%. P . lutzi (78.1%), T . brasiliensis (24.5%), and T . pseudomaculata (22.7%) were the most infected species. TcII and III genotypes were detected in T. brasiliensis and TcIII in P. lutzi . CONCLUSIONS T. brasiliensis was found in all environments and most ecotopes with high T. cruzi infection rates. High infection rates were also detected in T . pseudomaculata and P. lutzi , suggesting their role in the interchange between the wild and peridomestic transmission cycles. The combination of PCR, microscopic examination, and xenoculture contributed to improving T. cruzi infection evaluation in triatomine bugs. The TcII and TcIII genotypes were predominant in the study area.

  6. Attic Dust Analysis Approach for Evaluation of Heavy Metal Deposition on the El Paso Del Norte Region

    NASA Astrophysics Data System (ADS)

    Shekhter, E. G.; van Pelt, S.; Pannell, K.; Gill, T. E.; Barnes, M. A.

    2010-12-01

    The El Paso del Norte region in the United States is a region of complex topography that is the home to more than 2 million people who share the same air. A large non-ferrous smelter (primary lead-copper smelter),owned by the American Smelting and Refining Company (ASARCO), was functioning in the Rio Grande River valley on the west side of the Franklin Mountains that divide the city of El Paso and across the river from Juarez, Mexico’s largest city on the United States border. During the more than 100 years of operation, beginning in 1887, the ASARCO smelter emissions considerably deteriorated the already complex environmental condition on the US-Mexican border. In order to identify the sources and patterns of heavy metal dispersion, we used an attic dust analyses approach which has not been previously been applied in this area. Undisturbed attic dust can provide an integrated history of atmospheric loading of particulates emanating from geological, biological and anthropogenic sources and can help to reconstruct the air pollution history on a local scale. We sampled attic dust and dust from undisturbed surfaces in 15 buildings of varying ages from three neighborhoods in the cities of El Paso and Juarez. The dust samples and samples of unpolluted buried soil horizons in the area were extracted with aqua regia and analyzed by ICP-AES and ICP-MS. Enrichment ratios (ER) were calculated by dividing the concentration of a trace metal in the attic dust by the mean concentration of the same element in the buried soil horizons. Mean ER for Pb were 263.3, 95.4, and 70.2 for dust collected in a neighborhood near the smelter, downtown Juarez, and an El Paso neighborhood on the other side of the Franklin Mountains from the smelter. Greater ER for As, Cd, Zn, Sb, and Cu followed the same trends, by neighborhood, noted for Pb. In addition, dust collected from attics surfaces (pipes, ducts, storage containers) post-dating smelter disclosure had lower ER for the trace metals

  7. Seroprevalence of select bloodborne pathogens and associated risk behaviors among injection drug users in the Paso del Norte region of the United States – Mexico border

    PubMed Central

    Baumbach, Joan P; Foster, Lily N; Mueller, Mark; Cruz, Michelle Firestone; Arbona, Sonia; Melville, Sharon; Ramos, Rebeca; Strathdee, Steffanie A

    2008-01-01

    Background The region situated where the borders of Mexico, Texas and New Mexico meet is known as 'Paso del Norte'. The Paso del Norte Collaborative was formed to study the seroprevalence of select pathogens and associated risk behaviors among injection drug users (IDUs) in the region. Methods Respondent-driven sampling (RDS) was used: 459 IDU participants included 204 from Mexico; 155 from Texas; and 100 from New Mexico. Each of the three sites used a standardized questionnaire that was verbally administered and testing was performed for select bloodborne infections. Results Participants were mostly male (87.4%) and Hispanic/Latino (84.7%) whose median age was 38. In Mexico, Texas and New Mexico, respectively: hepatitis B virus (HBV) was seen in 88.3%, 48.6% and 59.6% of participants; hepatitis C virus (HCV) in 98.7%, 76.4% and 80.0%; human immunodeficiency virus (HIV) in 2.1%, 10.0% and 1.0%; and syphilis in 4.0%, 9.9% and 3.0%. Heroin was the drug injected most often. More IDUs in New Mexico were aware of and used needle exchange programs compared with Texas and Mexico. Conclusion There was mixed success using RDS: it was more successfully applied after establishing good working relationships with IDU populations. Study findings included similarities and distinctions between the three sites that will be used to inform prevention interventions. PMID:19014605

  8. Spatial and Temporal Variations in Streamflow and Dissolved Solids in the Rio Grande from Del Norte, Colorado, to El Paso, Texas, 1993-95

    NASA Astrophysics Data System (ADS)

    Moore, S. J.; Anderholm, S. K.

    2002-12-01

    Data collected as part of the Rio Grande Valley National Water Quality Assessment Program were used to evaluate spatial and temporal variations in streamflow and the concentration of dissolved solids at selected sites on the Rio Grande from Del Norte, Colorado, to El Paso, Texas, for the period of April 1993 to September 1995. Dissolved solids loads, which were estimated by a multivariate linear regression model (ESTIMATOR2000), are also presented and discussed. Spatial and temporal variations in streamflow, dissolved solids concentrations, and dissolved solids loads were used to evaluate how surface-water and ground-water inflows to and outflows from the Rio Grande affect dissolved solids along the river. Streamflow decreases from Del Norte, Colorado, to the mouth of the Conejos River because of diversions for irrigation. Streamflow increases from the mouth of the Conejos River to Otowi Bridge because of surface-water inflows (from the Conejos River, the Chama River, and other tributaries) and ground-water inflow in northern New Mexico. Streamflow decreases downstream from Otowi Bridge because outflows (due to agricultural use, leakage to ground water, and evapo-transpiration) are greater than inflows. Dissolved solids concentrations generally increase in the downstream direction; however, dissolved solids concentrations decrease between the mouth of the Conejos River and Otowi Bridge due to surface-water inflows from the Conejos and the Chama Rivers and ground-water inflows in northern New Mexico. In several reaches of the Rio Grande, decreasing streamflow and increasing dissolved solids loads indicate the presence of inflows with large dissolved solids concentrations (relative to those of the Rio Grande immediately upstream from that inflow); this occurs (1) between Del Norte, Colorado, and the mouth of Trinchera Creek, near Lasauses, Colorado (2) between Otowi Bridge and San Marcial, New Mexico, and (3) between Leasburg, New Mexico, and El Paso, Texas

  9. Evidence for maize (Zea mays) in the Late Archaic (3000–1800 B.C.) in the Norte Chico region of Peru

    PubMed Central

    Haas, Jonathan; Creamer, Winifred; Huamán Mesía, Luis; Goldstein, David; Reinhard, Karl; Rodríguez, Cindy Vergel

    2013-01-01

    For more than 40 y, there has been an active discussion over the presence and economic importance of maize (Zea mays) during the Late Archaic period (3000–1800 B.C.) in ancient Peru. The evidence for Late Archaic maize has been limited, leading to the interpretation that it was present but used primarily for ceremonial purposes. Archaeological testing at a number of sites in the Norte Chico region of the north central coast provides a broad range of empirical data on the production, processing, and consumption of maize. New data drawn from coprolites, pollen records, and stone tool residues, combined with 126 radiocarbon dates, demonstrate that maize was widely grown, intensively processed, and constituted a primary component of the diet throughout the period from 3000 to 1800 B.C. PMID:23440194

  10. Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data

    NASA Astrophysics Data System (ADS)

    Masiokas, Mariano H.; Christie, Duncan A.; Le Quesne, Carlos; Pitte, Pierre; Ruiz, Lucas; Villalba, Ricardo; Luckman, Brian H.; Berthier, Etienne; Nussbaumer, Samuel U.; González-Reyes, Álvaro; McPhee, James; Barcaza, Gonzalo

    2016-04-01

    Despite the great number and variety of glaciers in southern South America, in situ glacier mass-balance records are extremely scarce and glacier-climate relationships are still poorly understood in this region. Here we use the longest (> 35 years) and most complete in situ mass-balance record, available for the Echaurren Norte glacier (ECH) in the Andes at ˜ 33.5° S, to develop a minimal glacier surface mass-balance model that relies on nearby monthly precipitation and air temperature data as forcing. This basic model is able to explain 78 % of the variance in the annual glacier mass-balance record over the 1978-2013 calibration period. An attribution assessment identified precipitation variability as the dominant forcing modulating annual mass balances at ECH, with temperature variations likely playing a secondary role. A regionally averaged series of mean annual streamflow records from both sides of the Andes between ˜ 30 and 37° S is then used to estimate, through simple linear regression, this glacier's annual mass-balance variations since 1909. The reconstruction model captures 68 % of the observed glacier mass-balance variability and shows three periods of sustained positive mass balances embedded in an overall negative trend over the past 105 years. The three periods of sustained positive mass balances (centered in the 1920s-1930s, in the 1980s and in the first decade of the 21st century) coincide with several documented glacier advances in this region. Similar trends observed in other shorter glacier mass-balance series suggest that the Echaurren Norte glacier reconstruction is representative of larger-scale conditions and could be useful for more detailed glaciological, hydrological and climatological assessments in this portion of the Andes.

  11. Aryl hydrocarbon receptor-mediated activity of particulate organic matter from the Paso del Norte airshed along the U.S.-Mexico border.

    PubMed Central

    Arrieta, Daniel E; Ontiveros, Cynthia C; Li, Wen-Whai; Garcia, Jose H; Denison, Michael S; McDonald, Jacob D; Burchiel, Scott W; Washburn, Barbara Shayne

    2003-01-01

    In this study, we determined the biologic activity of dichloromethane-extracted particulate matter < 10 micro m in aerodynamic diameter (PM10) obtained from filters at three sites in the Paso del Norte airshed, which includes El Paso, Texas, USA; Juarez, Chihuahua, Mexico, and Sunland Park, New Mexico, USA. The extracts were rich in polycyclic aromatic hydrocarbons (PAHs) and had significant biologic activity, measured using two in vitro assay systems: ethoxyresorufin-(O-deethylase (EROD) induction and the aryl hydrocarbon-receptor luciferase reporter system. In most cases, both EROD (5.25 pmol/min/mg protein) and luciferase activities (994 relative light units/mg) were highest in extracts from the Advance site located in an industrial neighborhood in Juarez. These values represented 58% and 55%, respectively, of induction associated with 1 micro M ss-naphthoflavone exposures. In contrast, little activity was observed at the Northeast Clinic site in El Paso, the reference site. In most cases, luciferase and EROD activity from extracts collected from the Tillman Health Center site, situated in downtown El Paso, fell between those observed at the other two sites. Overall, a statistically significant correlation existed between PM10 and EROD and luciferase activities. Chemical analysis of extracts collected from the Advance site demonstrated that concentrations of most PAHs were higher than those reported in most other metropolitan areas in the United States. Calculations made with these data suggest a cancer risk of 5-12 cases per 100,000 people. This risk estimate, as well as comparisons with the work of other investigators, raises concern regarding the potential for adverse health effects to the residents of this airshed. Further work is needed to understand the sources, exposure, and effects of PM10 and particulate organic material in the Paso del Norte airshed. PMID:12896850

  12. Modified team-based learning strategy to improve human anatomy learning: A pilot study at the Universidad del Norte in Barranquilla, Colombia.

    PubMed

    Martínez, Emilio G; Tuesca, Rafael

    2014-01-01

    As part of an institutional program sponsored by the Centre for Teaching Excellence at the Universidad del Norte, Barranquilla, Colombia, we developed an educational research study on two sessions of human anatomy in which we combined team-based learning (TBL) and the use of iPads. Study data included the TBL, assessments applied during the course, student's grades on mid-term examinations and students' perceptions of their experiences. Students reported a positive attitude toward the use of the TBL sessions, and the results showed a significant improvement in their learning between the first and second sessions. Significantly positive correlations (P < 0.05) were obtained between (a) the individual students' readiness test performance 1 and mid-term examination 1, (b) the individual readiness test performances from Session 1 to Session 2, and (c) the group readiness test performances from the first and second sessions. These results point to positive learning experiences for these students. Analyses of the students' reflections on their activities also pointed toward future challenges.

  13. Optimal oil recovery strategies in Miocene transgressive-barrier, coastal-plain, and mixed-load fluvial systems in the Mioceno Norte Area, Lake Maracaibo, Venezuela

    SciTech Connect

    Ambrose, W.A.; Wang, F.P.; Akhter, M.S.; Skolnakorn, J.

    1996-08-01

    Miocene oil reservoirs in the 30-km{sup 2} Mioceno Norte area are estimated to have a recovery efficiency of only 27 percent at the end of primary recovery operations at the current 40-acre well spacing. Although this area has produced oil since the 1930s, appreciable volumes of oil remain in multiple, poorly contacted reservoir compartments. Strategic development of these compartments could improve ultimate recovery up to an additional 15 to 20 percent of the original oil in place. Multiple Miocene regressive-transgressive episodes in the Maracaibo Basin resulted in a complex reservoir architecture. Basal Miocene fluvial deposits, deposited during a forced regression, are overlain by shelf and transgressive barrier-island deposits of a highstand systems tract. Episodes of upper Miocene fluvial and lacustrine-fill deposits, bounded by continuous paleosol marker beds, record climate changes or intermittent tectonic activity resulting in reorganization of dip-dispersal systems. We used an integrated reservoir-characterization program incorporating structural, stratigraphic, seismic, palynological, petrophysical, petrographic, petroleum-engineering, and volumetric analyses to target areas for strategic oil recovery. Remaining oil is inferred to occur mainly in narrow (less than 2000 in wide), uncontacted or poorly contacted fluvial-and distributary-channel sandstones commonly projected between existing well spacing. Additional remaining oil exists in tidal-channel and backbarrier areas where washover-fan sandstones pinch out into muddy lagoonal-fill deposits.

  14. Vigilando la Calidad del Agua de los Grandes Rios de la Nacion: El Programa NASQAN del Rio Grande (Rio Bravo del Norte)

    USGS Publications Warehouse

    Lurry, Dee L.; Reutter, David C.; Wells, Frank C.; Rivera, M.C.; Munoz, A.

    1998-01-01

    La Oficina del Estudio Geologico de los Estados Unidos (U.S. Geological Survey, 0 USGS) ha monitoreado la calidad del agua de la cuenca del Rio Grande (Rio Bravo del Norte) desde 1995 como parte de la rediseiiada Red Nacional para Contabilizar la Calidad del Agua de los Rios (National Stream Quality Accounting Network, o NASOAN) (Hooper and others, 1997). EI programa NASOAN fue diseiiado para caracterizar las concentraciones y el transporte de sedimento y constituyentes quimicos seleccionados, encontrados en los grandes rios de los Estados Unidos - incluyendo el Misisipi, el Colorado y el Columbia, ademas del Rio Grande. En estas cuatro cuencas, el USGS opera actualmente (1998) una red de 40 puntos de muestreo pertenecientes a NASOAN, con un enfasis en cuantificar el flujo en masa (la cantidad de material que pasa por la estacion, expresado en toneladas por dial para cada constituyente. Aplicacando un enfoque consistente, basado en la cuantificacion de flujos en la cuenca del Rio Grande, el programa NASOAN esta generando la informacion necesaria para identificar fuentes regionales de diversos contaminantes, incluyendo sustancias qui micas agricolas y trazas elementos en la cuenca. EI efecto de las grandes reservas en el Rio Grande se puede observar segun los flujos de constituyentes discurren a 10 largo del rio. EI analisis de los flujos de constituyentes a escala de la cuenca proveera los medios para evaluar la influencia de la actividad humana sobre las condiciones de calidad del agua del Rio Grande.

  15. [Relation of socioeconomic and environmental indicators to the nutritional status of preschool children in a community of Sierra Norte de Puebla, México].

    PubMed

    Pérez-Gil, S E; Cifuentes, E

    1986-03-01

    A brief discussión on "the social" approach in nutritional research is presented. The relevance that socioeconomic factors have acquired in recent years for this type of studies, is also discussed. The main purpose of our communication was to identify and validate some socioeconomic and environmental indicators and their association with the nutritional status of preschool children in a Mexican indigenous community (Sierra Norte de Puebla). A total of 89 children below five years of age were studied and classified according to their nutritional status. A socioeconomic questionnaire was applied to their parents. Results revealed ample correlation between the degree of malnutrition of the preschool child and the following indicators: housing conditions, father's main occupation, land tenure, income, etc. It is argued that the analysis of these indicators is relevant, emphasizing the importance that the combination of anthropometrical, food consumption and socioeconomic data have for detecting population groups vulnerable to malnutrition. The obtention of these indicators is therefore highly recommended, but should not imply great obstacles; on the contrary, they should be highly sensitive and easy to detect.

  16. Water-quality data for the Rio Grande between Picacho Bridge near Las Cruces and Calle del Norte Bridge near Mesilla, New Mexico, 1996-97

    USGS Publications Warehouse

    Huff, G.F.

    1998-01-01

    The City of Las Cruces is concerned about water quality in a reach of the Rio Grande that receives outfall from the City of Las Cruces wastewater-treatment plant. Water-quality samples were collected from the Rio Grande at Picacho Bridge near Las Cruces, New Mexico; from the sampling site at the City of Las Cruces wastewater-treatment plant; and from the Rio Grande at Calle del Norte Bridge near Mesilla, New Mexico. The samples were collected on 12 days from August 6, 1996, to February 28, 1997, and were analyzed for a suite of dissolved and total constituents including trace metals. Instantaneous stream discharge was measured concurrently with collection of the Rio Grande samples. At the wastewater- treatment plant, the City of Las Cruces provided instantaneous discharge rates concurrent with sampling. Quality-control measures used in this study to ensure analytical accuracy included replicate sampling, replicate analysis of split samples, ambient blanks, equipment blanks, and analysis of standard reference water samples.

  17. Shallow to near-surface, vein-type epithermal gold mineralization at Lalab in the Sibutad gold deposit, Zamboanga del Norte, Mindanao, Philippines

    NASA Astrophysics Data System (ADS)

    Jimenez, F. A.; Yumul, G. P.; Maglambayan, V. B.; Tamayo, R. A.

    2002-12-01

    The Sibutad vein-type epithermal gold deposit is the most promising economically feasible gold mineralization found in recent years in Zamboanga del Norte province in Zamboanga Peninsula, Mindanao island. The Sibutad gold deposit occurs in Pliocene to Pleistocene volcanic rocks, resting on a deformed island arc block to the east of the tectonically active Sindangan-Cotabato-Daguma Lineament. The host rocks are the Malindang Volcanics, composed of lower and upper members, which are both intruded by andesite porphyry. The lower member is made up of andesite flows, dacite tuff and tuffite, whereas volcanic breccia and tuff breccia characterize the upper member. The Sibutad gold deposit is subdivided into the Larayan and Lalab prospects. In Lalab, which is the prospect studied, hydrothermal activity and gold mineralization occur in the andesite flows. The geology, alteration and mineralization of the Lalab orebody are of adularia-sericite type that suggests the gold was precipitated from reduced, near-neutral pH solutions within a shallow to near-surface environment. The following events produced the Lalab orebody: (1) pre-breccia wallrock alteration, (2) hydrothermal brecciation, (3) post-breccia wallrock alteration, and (4) gold mineralization. Gold precipitated in quartz veins was a response to boiling, followed by fluid mixing. Prolific gold zones occur between 30 m below sea level and 200 m above sea level.

  18. The Morphologic Evolution of the Amazon Coastal Plain, Cabo Norte, Amapa, Brazil: The Need for Integrated Investigation on the Internal Continental Shelf.

    NASA Astrophysics Data System (ADS)

    Silveira, O.; Santos, V. F.; Takiyama, L. R.

    2007-05-01

    refers to the coastal zone between the Amapa Grande River and Araguari River, including Maraca Island and the Oriental lacustrine Belt. Westward the island, at least three paleolevels of clays with roots in life position suggests regressive/transgressive events. Extraordinaty paleodrainage network beginnig at the continent and recognized at the insular portion suggests links with the paleochannels found at the continental shelf. The Oriental Belt of lakes is located close to the coastline, at Cabo Norte. It main feature is a mud lump approximately 10 Km ratio, well recognized at the remote sensing. It shows similar evolutionary processes with Araguari River, dating from XIX century, when this river had two mouths defined by the Carpori Island. The reasons of the deactivation are still unknowed, but, this rapid morphological evolution indicates short time colmatation processes that can be linked to tectonic regional processes. On the other hand, the Cabo Norte feature consolidation may impose changes in the sedimentation processes yielding space reduction over the coastal plain accumulation, diminishing of the solid and liquid fluvial discharge and promoting the availability of the local sediment transport over the littoral. The investigation of these processes requires an integrated coastal plain-continental shelf morphological study applying adequate techniques for modification studies and dating ages over short geological time frame, in century scale level.

  19. Mapping of High Value Crops Through AN Object-Based Svm Model Using LIDAR Data and Orthophoto in Agusan del Norte Philippines

    NASA Astrophysics Data System (ADS)

    Candare, Rudolph Joshua; Japitana, Michelle; Cubillas, James Earl; Ramirez, Cherry Bryan

    2016-06-01

    This research describes the methods involved in the mapping of different high value crops in Agusan del Norte Philippines using LiDAR. This project is part of the Phil-LiDAR 2 Program which aims to conduct a nationwide resource assessment using LiDAR. Because of the high resolution data involved, the methodology described here utilizes object-based image analysis and the use of optimal features from LiDAR data and Orthophoto. Object-based classification was primarily done by developing rule-sets in eCognition. Several features from the LiDAR data and Orthophotos were used in the development of rule-sets for classification. Generally, classes of objects can't be separated by simple thresholds from different features making it difficult to develop a rule-set. To resolve this problem, the image-objects were subjected to Support Vector Machine learning. SVMs have gained popularity because of their ability to generalize well given a limited number of training samples. However, SVMs also suffer from parameter assignment issues that can significantly affect the classification results. More specifically, the regularization parameter C in linear SVM has to be optimized through cross validation to increase the overall accuracy. After performing the segmentation in eCognition, the optimization procedure as well as the extraction of the equations of the hyper-planes was done in Matlab. The learned hyper-planes separating one class from another in the multi-dimensional feature-space can be thought of as super-features which were then used in developing the classifier rule set in eCognition. In this study, we report an overall classification accuracy of greater than 90% in different areas.

  20. Ediacaran to Cambrian magmatic suites in the Rio Grande do Norte domain, extreme Northeastern Borborema Province (NE of Brazil): Current knowledge

    NASA Astrophysics Data System (ADS)

    do Nascimento, Marcos Antonio Leite; Galindo, Antonio Carlos; de Medeiros, Vladimir Cruz

    2015-03-01

    The Ediacaran-Cambrian plutonic activity is one of the most important geological features of the Rio Grande do Norte Domain (Borborema Province, NE Brazil). It is represented by several batholiths, stocks and dykes. Based on the petrographic, geochemical and geochronological characteristic of different rocks, this plutonic activity can be grouped in six separate suites: shoshonitic (Shos), porphyritic high-K calc-alkaline (PHKCalcAlk), equigranular high K calc-alkaline (EHKCalcAlk), calc-alkaline (CalcAlk), alkaline (Alk) and charnockitic alkaline (ChAlk). Geochemically, the Shos, CalcAlk and Alk suites are differentiated from the others, while ChAlc can be distinguished from the others in some diagrams. The greatest difficulty lies in distinguishing between the chemically similar PHKCalcAlk and EHKCalcAlk. To this end, existing geochronological data as well as related petrographic and textural field aspects may be used to distinguish the two mentioned suites (PHKCalcAlk and EHKCalcAlk). Petrographically, the Shos suite has composition between gabbro/diorite and quartz monzonite. Monzogranites (with subordinate granodiorites and quartz monzonites) predominate in both PHKCalcAlk and EHKCalcAlk. Calc is composed of granodiorites to tonalites. Alc is formed by alkali feldspar granites (with subordinate alkali feldspar quartz syenites and syenogranites), whereas ChAlc has quartz mangerites and charnockites. The suites were emplaced between the Ediacaran (635-541 Ma) and Cambrian (541-485 Ma), predominantly in the Ediacaran, based on 34 U-Pb datings (zircon, titanite, monazite and columbite-tantalite), 17 Rb-Sr (whole rock) and 1 Sm-Nd (total rock and mineral) internal isochrons. The Shos suite has U-Pb ages varying from 599 ± 16 (Poço Verde pluton) to 579 ± 7 (Acari and São João do Sabugi plutons), slightly older than those of the PHKCalcAlk suite, which ranges between 591 ± 4 Ma (Totoró pluton) and 544 ± 7 Ma (São José de Espinharas pluton). The Calc

  1. Los cambios en la velocidad de rotación terrestre y los fenómenos geomagnéticos

    NASA Astrophysics Data System (ADS)

    Gianibelli, J. C.

    Uno de los aspectos importantes relativos a la geodinámica del interior terrestre es la correlación entre los eventos de cambio en la velocidad de rotación terrestre y los determinados en los elementos del campo geomagnético por ejemplo, la Declinación Magnética, o los coeficientes de los modelos matemáticos de representación global de dicho campo. En este trabajo se presentan los resultados de las características espectrales de los cambios observados en la longitud del día (ldd), y su relación con la estructura espectral de las coeficientes de los modelos matemáticos de campo denominados Campo Internacional Geomagnético de Referencia (CIGR). El intervalo estudiado comprende los últimos 100 años. Los resultados muestran una correlación en las bandas de 60 y 30 años, con posibles períodos mucho mayores que no son posibles determinar a partir de los modelos de CIRG. Se efectúa una simulación a partir de los resultados obtenidos por la aplicación del método de máxima entropía con longitudes del filtro predictor de error comprendida entre el 10% y el 95% de la longitud de la serie analizada. Se observan procesos sicrónicos y asincrónicos que, en muy largos intervalos de tiempos, podrían suponerse como caóticos.

  2. Ediacaran to Cambrian magmatic suites in the Rio Grande do Norte domain, extreme Northeastern Borborema Province (NE of Brazil): Current knowledge

    NASA Astrophysics Data System (ADS)

    do Nascimento, Marcos Antonio Leite; Galindo, Antonio Carlos; de Medeiros, Vladimir Cruz

    2015-03-01

    The Ediacaran-Cambrian plutonic activity is one of the most important geological features of the Rio Grande do Norte Domain (Borborema Province, NE Brazil). It is represented by several batholiths, stocks and dykes. Based on the petrographic, geochemical and geochronological characteristic of different rocks, this plutonic activity can be grouped in six separate suites: shoshonitic (Shos), porphyritic high-K calc-alkaline (PHKCalcAlk), equigranular high K calc-alkaline (EHKCalcAlk), calc-alkaline (CalcAlk), alkaline (Alk) and charnockitic alkaline (ChAlk). Geochemically, the Shos, CalcAlk and Alk suites are differentiated from the others, while ChAlc can be distinguished from the others in some diagrams. The greatest difficulty lies in distinguishing between the chemically similar PHKCalcAlk and EHKCalcAlk. To this end, existing geochronological data as well as related petrographic and textural field aspects may be used to distinguish the two mentioned suites (PHKCalcAlk and EHKCalcAlk). Petrographically, the Shos suite has composition between gabbro/diorite and quartz monzonite. Monzogranites (with subordinate granodiorites and quartz monzonites) predominate in both PHKCalcAlk and EHKCalcAlk. Calc is composed of granodiorites to tonalites. Alc is formed by alkali feldspar granites (with subordinate alkali feldspar quartz syenites and syenogranites), whereas ChAlc has quartz mangerites and charnockites. The suites were emplaced between the Ediacaran (635-541 Ma) and Cambrian (541-485 Ma), predominantly in the Ediacaran, based on 34 U-Pb datings (zircon, titanite, monazite and columbite-tantalite), 17 Rb-Sr (whole rock) and 1 Sm-Nd (total rock and mineral) internal isochrons. The Shos suite has U-Pb ages varying from 599 ± 16 (Poço Verde pluton) to 579 ± 7 (Acari and São João do Sabugi plutons), slightly older than those of the PHKCalcAlk suite, which ranges between 591 ± 4 Ma (Totoró pluton) and 544 ± 7 Ma (São José de Espinharas pluton). The Calc

  3. Evaluation of emission control strategies to reduce ozone pollution in the Paso del Norte region using a photochemical air quality modeling system

    NASA Astrophysics Data System (ADS)

    Valenzuela, Victor Hugo

    variability of the PREDICTED to OBSERVED ozone concentrations of both BASELINE model and simulations with modified emissions assessed by the sensitivity analysis. All simulations were found to vary within acceptable ranges of these two criteria variables. Simulation results indicate ozone formation in the PdN region is VOC-limited. Under VOC-limited conditions, modifications to NOx emissions do not produce a marked increase or decrease in ozone concentrations. Modifications to VOC emissions generated the highest variability in ozone concentrations. Increasing VOC emissions by 75% produced results which minimized model bias and error when comparing PREDICTED and OBSERVED ozone concentrations. Increasing VOC emissions by 75% either alone or in combination with a 75% increase in NOx emissions generated PREDICTED ozone concentrations very near to OBSERVED ozone. By evaluating the changes in ambient ozone concentrations through photochemical modeling, air quality planners may identify the most efficient or effective VOC emissions control strategies for area sources. Among the strategies to achieve emissions reductions are installation of gasoline vapor recovery systems, replacing high-pressure low-volume surface coating paint spray guns with high-volume low-pressure spray paint guns, requiring emissions control booths for surface coating operations as well as undertaking solvent management practices, requiring the sale of low VOC paint solvents in the surface-coating industry, and requiring low-VOC solvents in the dry cleaning industry. Other strategies to reduce VOC emissions include initiating Eco-Driving strategies to reduce fuel consumption from mobile sources and minimize vehicle idling at the international ports of entry by reducing bridge wait times. This dissertation depicts a tool for evaluating impacts of emissions on regional air quality by addressing the highly unresolved fugitive emissions in the Paso del Norte region. It provides a protocol for decision makers to

  4. Cambio climático

    NASA Video Gallery

    ¿La NASA trata sólo temas de astronautas, trasbordadores y el planeta? Sí, la NASA tiene más de una decena de satélites estudiando la Tierra. La información que recaban estos satélites ayudan a que...

  5. Cambios históricos en el aporte terrígeno de la cuenca del Río de la Plata sobre la plataforma interna Uruguaya

    NASA Astrophysics Data System (ADS)

    Marrero, Analía; Tudurí, Adriana; Pérez, Laura; Cuña, Caroline; Muniz, Pablo; Lopes Figueira, Rubens; Michaelovitch de Mahiques, Michel; Alves de Lima Ferreira, Paulo; Pittauerová, Daniela; Hanebuth, Till; García Rodríguez, Felipe

    2014-12-01

    El Río de la Plata (RdlP) presenta significativas variaciones naturales (hidrodinámicas y oceanográficas) asociadas a diferentes condiciones climáticas. El propósito de este trabajo es inferir los cambios de aportes continentales de sedimentos y su relación con las variaciones hidrológicas del Río de la Plata, a través del análisis de proxies sedimentológicos y geoquímicos en testigos de sedimentos de la plataforma interna uruguaya que registran los últimos 100 años, aproximadamente. A partir de la datación por 210Pb de dos testigos de sedimentos (GeoB 13813-4 y BAR1) se reconstruyó la geocronología del ambiente, y se relacionó con datos de las forzantes climáticas Pacific Decadal Oscillation, El Niño/La Niña Southern Oscillation, Atlantic Multidecadal Oscillation, y las anomalías hidrológicas de los ríos Paraná y Uruguay. Los valores más positivos y estables del Southern Oscillation Index, los cuales corresponden a fases La Niña, se observan en el periodo correspondiente entre 1910-1970, respecto al resto de la serie, donde se aprecia una mayor variabilidad y una tendencia hacia valores más negativos (eventos El Niño). Se hicieron dendrogramas (clustering) jerárquicos para ambos testigos. Para el testigo GeoB 13813-4, se utilizó la relación Ca/Ti y la granulometría, mientras que para BAR1 se recurrió a variables granulométricas y la tasa de sedimentación. El mayor aporte continental hacia la región de la plataforma adyacente al Río de la Plata registrado a partir del año 1970, podría ser el factor principal de los agrupamientos observados en los clusters para ambos testigos. Las agrupaciones mostraron una diferenciación en la década de 1970, lo que estaría asociado al aumento de los caudales de los ríos Paraná y Uruguay, durante las últimas tres décadas del siglo XX. Por otra parte se observa que la granulometría del testigo BAR1 presentó un mayor tamaño de grano y más variabilidad que en el caso del testigo Geo

  6. Three thousand years of flank and central vent eruptions of the San Salvador volcanic complex (El Salvador) and their effects on El Cambio archeological site: a review based on tephrostratigraphy

    NASA Astrophysics Data System (ADS)

    Ferrés, D.; Delgado Granados, H.; Hernández, W.; Pullinger, C.; Chávez, H.; Castillo Taracena, C. R.; Cañas-Dinarte, C.

    2011-09-01

    The volcanic events of the last 3,000 years at San Salvador volcanic complex are reviewed using detailed stratigraphic records exposed in new excavations between 2005 and 2007, at El Cambio archeological site (Zapotitán Valley, El Salvador), and in other outcrops on the northern and northwestern sectors of the complex. The sequences that overlie Tierra Blanca Joven (cal. 429 ± 107 ad), from the Ilopango caldera, comprise the Loma Caldera (cal. 590 ± 90 ad) and El Playón (1658-1671) deposits and the San Andrés Tuff (cal. 1031 ± 29 ad), related to El Boquerón Volcano. The surge deposits within the El Playón, San Andrés Tuff and overlying Talpetate II sequences indicate the significance of phreatomagmatic phases in both central vent and flank eruptions during the last 1,600 years. Newly identified volcanic deposits underlying Tierra Blanca Joven at El Cambio extend the stratigraphic record of the area to 3,000 years bp. Paleosols interstratified with those deposits contain cultural artifacts which could be associated with the Middle Preclassic period (900-400 bc). If correct, human occupation of the site during the Preclassic period was more intense than previously known and volcanic eruptions must have affected prehistoric settlements. The archeological findings provide information on how prehistoric populations dealt with volcanic hazards, thousands of years ago in the eastern Zapotitán Valley, where several housing projects are currently being developed. The new stratigraphic and volcanological data can be used as a basis for local and regional hazard assessment related to future secondary vent activity in the San Salvador Volcanic Complex.

  7. Streamflow gains and losses and selected water-quality observations in five subreaches of the Rio Grande/Rio Bravo del Norte from near Presidio to Langtry, Texas, Big Bend area, United States and Mexico, 2006

    USGS Publications Warehouse

    Raines, Timothy H.; Turco, Michael J.; Connor, Patrick J.; Bennett, Jeffery B.

    2012-01-01

    Few historical streamflow and water-quality data are available to characterize the segment of the Rio Grande/Rio Bravo del Norte (hereinafter Rio Grande) extending from near Presidio to near Langtry, Texas. The U.S. Geological Survey, in cooperation with the National Park Service and the Texas Commission on Environmental Quality, collected water-quality and streamflow data from the Rio Grande from near Presidio to near Langtry, Texas, to characterize the streamflow gain and loss and selected constituent concentrations in a 336.3-mile reach of the Rio Grande from near Presidio to near Langtry, Texas. Streamflow was measured at 38 sites and water-quality samples were collected at 20 sites along the Rio Grande in February, March, and June 2006. Streamflow gains and losses over the course of the stream were measured indirectly by computing the differences in measured streamflow between sites along the stream. Water-quality data were collected and analyzed for salinity, dissolved solids, major ions, nutrients, trace elements, and stable isotopes. Selected properties and constituents were compared to available Texas Commission on Environmental Quality general use protection criteria or screening levels. Summary statistics of selected water-quality data were computed for each of the five designated subreaches. Streamflow gain and loss and water-quality constituent concentration were compared for each subreach, rather than the entire segment because of the temporal variation in sample collection caused by controlled releases upstream. Subreach A was determined to be a losing reach, and subreaches B, C, D, and E were determined to be gaining reaches. Compared to concentrations measured in upstream subreaches, downstream subreaches exhibited evidence of dilution of selected constituent concentrations. Subreaches A and B had measured total dissolved solids, chloride, and sulfate exceeding the Texas Commission on Environmental Quality general use protection criteria

  8. Aztecas Del Norte: The Chicanos of Aztlan.

    ERIC Educational Resources Information Center

    Forbes, Jack D.

    The purpose of this book is to examine the Indian heritage of the Mexican Americans of the Southwest. It covers Mexican American history from the time of the Aztecs to the present. In the introduction, the Mexican approach to United States history is discussed. Topics covered are: the Tollecayotl and Mexicayotl heritage; the northward movement;…

  9. Explosive and Phreatomagmatic Activity from San Salvador Volcanic Complex (El Salvador) and Their Effects on El Cambio Archaeological Site: a Review of the Last 3000 yrs. Based on Volcanic Stratigraphy Data

    NASA Astrophysics Data System (ADS)

    Ferrés, D.; Delgado, H.; Pullinger, C.; Castillo, R.; Chávez, H. I.

    2007-05-01

    El Cambio archeological site (ECAS; Zapotitán Valley), 4 km NW from the San Salvador Volcanic Complex comprises 3000 yrs. of pyroclastic record. Sheets (1983) identified different levels rich in cultural remains intercalated within the volcanic deposits, indicating that different prehistoric settings were affected by San Salvador volcano eruptions, and giving information on the reoccupation frequency in the area. Accordingly, ECAS was occupied since the Late Pre-Classic period until before the last plinian eruption of Ilopango Caldera (425AD) reference, that originated the Tierra Blanca Joven (TBJ), pyroclastic deposits generally used as key-layer in stratigraphic reconstructions. Within the next two centuries, there is no evidence of human occupation at ECAS until the end of Late Classic which was a period of maximum splendor in the valley. During this time the area was affected by at least 3 eruptions from the San Salvador volcanic complex that produced the: Laguna Caldera volcanic fall deposits (which affected Joya de Cerén archeological site in 625AD), "Talpetate" surge deposits or Toba de San Andrés (600-900AD), and fall deposits of El Playón volcano (1658). We report new data on volcanic stratigraphy and archeological history including the following: a) the phreatomagmatic nature of eruptions that affected the area, the new excavations allowed the detailed study of surge deposits indicating magma-water interaction at Laguna Caldera and El Playón, previously considered strombolian eruptions; b)document the occupation of ECAS during Middle Pre-Classic period, new surge deposits below TBJ have been identified (with Middle Pre-Classic artifacts and pottery), that had not been documented before, extending the historic record up to 3000 yrs. BP. and c) detailed study of the "Talpetate" deposits, this sequence consists of fall, pyroclastic flow and surge deposits, present in the rim and slopes of San Salvador Volcano, which can be correlated with surge deposits

  10. [The indigenous population of Sierra Norte de Puebla].

    PubMed

    Marquez Gonzalez, G

    1991-06-01

    The northern sierra region of Pueblo, Mexico, contains 1496 communities in 65 municipios and covers 1/4 of the area of the state of Puebla. The topography is steep and mountainous, and the area is inaccessible. The region contains the 3 principal zones of Mesoamerica, hot lands from sea level to 700 meters above sea level, temperate zones from 700-1500 meters, and cold country from 1500-2000 meters above sea level. Most of the population resides in the temperate and cold lands, but the hot zones are economically important. Little is known of the prehistory of the area. The Totonac were believed to have been the earliest settlers. In the mid-15th century numerous Nahua groups came to the area. In the late 15th century the region fell to the Aztecs, but their dominion was cut short by the arrival of the Spanish. Spanish penetration was relatively slow because of the difficult terrain and the lack of precious metals desired by the Spanish. The introduction of coffee cultivation in the late 19th century accelerated the adoption of urban-mestizo sociocultural and commercial elements by the indigenous population. The population of the northern sierra increased from 752,656 in 1980 to 965,976 in 1990. The 1980 census reported that 259,140 persons spoke indigenous languages, including 179,677 who spoke Nahuatl, 66,020 Totonaco, and 4921 Otomi. The most important cities are located on paved roads: Teziutland, Zacatlan, Hauachinango, and Zacapoaxtla. The municipios with predominantly monolingual indigenous populations are concentrated in the most difficult to reach areas of the central sierra massif. The region is characterized by temporary and permanent emigration of the indigenous population. The main reasons for emigration are lack of land and of alternative sources of employment, and desire for education. During the months August-December, known as the time of hunger, there is seasonal migration of household heads in search of work as laborers in cane cutting, tobacco, or fruit harvesting. The local economy is based on subsistence agriculture and production of coffee, fruits, and woods for export. The most isolated and inaccessible communities have preserved traditional cultural elements the most strongly.

  11. 77 FR 50080 - Del Norte County Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-20

    ... meetings are open to the public. The purpose of the meetings are to review and recommend fiscal year 2012.... SUPPLEMENTARY INFORMATION: The following business will be conducted: review and recommend fiscal year 2012 project proposals. Contact Committee Coordinator listed above for meeting agenda information. Anyone...

  12. [The indigenous population of Sierra Norte de Puebla].

    PubMed

    Marquez Gonzalez, G

    1991-06-01

    The northern sierra region of Pueblo, Mexico, contains 1496 communities in 65 municipios and covers 1/4 of the area of the state of Puebla. The topography is steep and mountainous, and the area is inaccessible. The region contains the 3 principal zones of Mesoamerica, hot lands from sea level to 700 meters above sea level, temperate zones from 700-1500 meters, and cold country from 1500-2000 meters above sea level. Most of the population resides in the temperate and cold lands, but the hot zones are economically important. Little is known of the prehistory of the area. The Totonac were believed to have been the earliest settlers. In the mid-15th century numerous Nahua groups came to the area. In the late 15th century the region fell to the Aztecs, but their dominion was cut short by the arrival of the Spanish. Spanish penetration was relatively slow because of the difficult terrain and the lack of precious metals desired by the Spanish. The introduction of coffee cultivation in the late 19th century accelerated the adoption of urban-mestizo sociocultural and commercial elements by the indigenous population. The population of the northern sierra increased from 752,656 in 1980 to 965,976 in 1990. The 1980 census reported that 259,140 persons spoke indigenous languages, including 179,677 who spoke Nahuatl, 66,020 Totonaco, and 4921 Otomi. The most important cities are located on paved roads: Teziutland, Zacatlan, Hauachinango, and Zacapoaxtla. The municipios with predominantly monolingual indigenous populations are concentrated in the most difficult to reach areas of the central sierra massif. The region is characterized by temporary and permanent emigration of the indigenous population. The main reasons for emigration are lack of land and of alternative sources of employment, and desire for education. During the months August-December, known as the time of hunger, there is seasonal migration of household heads in search of work as laborers in cane cutting, tobacco, or fruit harvesting. The local economy is based on subsistence agriculture and production of coffee, fruits, and woods for export. The most isolated and inaccessible communities have preserved traditional cultural elements the most strongly. PMID:12284139

  13. 77 FR 47360 - Del Norte Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-08

    ..., Eureka, CA. 95501. Please call ahead to 707-442-1721 to facilitate entry into the building to view... Forest Supervisor's Office, 1330 Bayshore Way, Eureka, CA. 95501, Attn. Lynn Wright, or by email to... Unified School District, Redwood Room, 301 West Washington Boulevard, Crescent City CA 95531....

  14. Atlas del Genoma del Cáncer: Antecedentes

    Cancer.gov

    El Atlas del Genoma del Cáncer es una iniciativa de los Institutos Nacionales de la Salud (NIH) para crear mapas multidimensionales completos de los cambios genómicos clave en los tipos y subtipos principales de cáncer.

  15. Border Environmental Education Resource Guide: Southern New Mexico, South Texas, Northern Chihuahua, Northern Coahuila, Northern Nuevo Leon, Northern Tamaulipas = Guia de Recursos de Educacion Ambiental en la Frontera: Sur de Nuevo Mexico, Sur de Texas, Norte de Chihuahua, Norte de Coahuila, Norte de Nuevo Leon, Norte de Tamaulipas.

    ERIC Educational Resources Information Center

    Meissner, David, Comp.

    This guide provides educators and residents of the border with useful information about environmental education program offerings along the eastern half of the United States-Mexico border. The programs listed in the guide represent a broad range of educational efforts focused on understanding the environment and solving environmental problems in…

  16. Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico.

    PubMed

    Des Marais, D J; Stallard, M L; Nehring, N L; Truesdell, A H

    1988-01-01

    Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330 degrees C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher delta 13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400 degrees C) and higher (600 degrees C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments. PMID:11542148

  17. "VAMONOS PAL NORTE" (LET'S GO NORTH), A SOCIAL PROFILE OF THE SPANISH SPEAKING MIGRATORY FARM LABORER.

    ERIC Educational Resources Information Center

    A YEARLY INCREASE OF MIGRATORY WORKERS TO OREGON RESULTED IN HIGHER WAGES IN THE AREA. IN 1957 THE SPANISH SPEAKING LABORERS IN OREGON NUMBERED 11,000 TO 12,000, 10 PERCENT OF WHOM WERE PERMANENT RESIDENTS. RECRUITMENT WAS CARRIED OUT BY CONTRACTORS. THEY OPERATED THROUGH SUBCONTRACTORS WHO IN TURN ACTED AS CONTACT MEN IN STRATEGIC LOCATIONS…

  18. 78 FR 18783 - Establishment of the R[iacute]o Grande del Norte National Monument

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-28

    ... code 3295-F3 ] TD28MR13.010 [FR Doc. 2013-07406 Filed 3-27-13; 8:45 am] Billing code 4310-10-C #0; ... Flyway, a vital migration corridor for birds such as Canada geese, herons, sandhill cranes,...

  19. Historia Verdadera del Chicano del Norte. [True History of the Chicano of the North].

    ERIC Educational Resources Information Center

    Herrera, David; Bryan, Clifford E.

    Very little is known about the Chicanos in the northern U.S., especially those in the Northwest. Research and writing on Chicanos have concentrated on the Southwest or large urban settings, thus excluding those Chicanos residing in rural settings except for those in the migrant stream. These rural residents have become a forgotten people,…

  20. Pathways to El Norte: Origins, Destinations, and Characteristics of Mexican Migrants to the United States

    PubMed Central

    Riosmena, Fernando; Massey, Douglas S.

    2013-01-01

    The geography Mexican migration to the U.S. has experienced deep transformations in both its origin composition and the destinations chosen by migrants. To date, however, we know little about how shifting migrant origins and destinations may be linked to one another geographically and, ultimately, structurally as relatively similar brands of economic restructuring have been posited to drive the shifts in origins and destinations. In this paper, we describe how old and new migrant networks have combined to fuel the well-documented geographic expansion of Mexican migration. We use data from the 2006 Mexican National Survey of Population Dynamics, a nationally representative survey that for the first time collected information on U.S. state of destination for all household members who had been to the United States during the five years prior to the survey. We find that the growth in immigration to southern and eastern states is disproportionately fueled by undocumented migration from non-traditional origin regions located in Central and Southeastern Mexico and from rural areas in particular. We argue that economic restructuring in the U.S. and Mexico had profound consequences not only for the magnitude but also for the geography of Mexican migration, opening up new region-to-region flows. PMID:22666876

  1. Pathways to El Norte: origins, destinations, and characteristics of Mexican migrants to the United States.

    PubMed

    Riosmena, Fernando; Massey, Douglas S

    2012-01-01

    The geography Mexican migration to the U.S. has experienced deep transformations in both its origin composition and the destinations chosen by migrants. To date, however, we know little about how shifting migrant origins and destinations may be linked to each another geographically and, ultimately, structurally as relatively similar brands of economic restructuring have been posited to drive the shifts in origins and destinations. In this paper, we describe how old and new migrant networks have combined to fuel the well-documented geographic expansion of Mexican migration. We use data from the 2006 Mexican National Survey of Population Dynamics, a nationally representative survey that for the first time collected information on U.S. state of destination for all household members who had been to the U.S. during the 5 years prior to the survey. We find that the growth in immigration to southern and eastern states is disproportionately fueled by undocumented migration from non-traditional origin regions located in Central and Southeastern Mexico and from rural areas in particular. We argue that economic restructuring in the U.S. and Mexico had profound consequences not only for the magnitude but also for the geography of Mexican migration, opening up new region-to-region flows.

  2. Mineral resources of the southern half of Zone III Santander, Norte de Santander and Boyaca, Colombia

    USGS Publications Warehouse

    Ward, Dwight Edward; Goldsmith, Richard; Cruz, Bruna B.; Restrepo, Jaime; Hernan, A.

    1970-01-01

    The areas covered by this report lies in the eastern Cordillera of the Colombian Andes in the region around Bucaramanga. This part of the eastern Cordillera consists of a structurally complex core of metamorphic and igneous rocks of Precambrian to Mesozoic age, flanked to east and west by faulted and folded sedimentary strata of late Paleozoic to Tertiary age. Infaulted blocks of sedimentary rocks are locally present in the massif. Unconsolidated deposits of Quaternary age, primarily terraced alluvium, are 10cally extensive in valleys on the flanks of the range. The crystalline central core of the range is called the Santander massif. In it are located the principal sold deposits and scattered deposits of copper, lead, zinc, and fluorite. The sedimentary rocks flanking the massif contain significant deposits of phosphate rock and gypsum, as well as other nonmetallic industrial minerals such as limestone, barite, glass sand, and coal. A belt of lead-zinc prospects in carbonate and sandstone beds of Cretaceous age on the east side of the range warrants further investigation. Gold and silver are the only important metallic minerals that have been produced in the Santander massif. Mining dates back to colonial and possibly to pre-colonial times and continues on a small scale at present. The California and Vetas district was the main area of investigation of metallic minerals during the present project. Results of geochemical sampling of stream sediments and assays of vein material indicate that the main potential of the area is in gold with lesser potentials in copper, lead, zinc, and silver. Mineralization of the district is probably younger than Early Cretaceous. Although no copper minerals have been mined elsewhere in the massif, small amounts of copper minerals in various rocks in scattered areas is revealed by green and blue stains of copper carbonates and sulfates. Deposits of greatest areal extent are in arkosic conglomeratic beds of the Giron Formation. These are being explored and sampled at the present time (1969). A little lead has been mined and smelted in the past but operations were on a very small scale and of short duration. Small amounts of lead, zinc, and copper minerals accompany dolomite replacement of Cretaceous limestone in a few scattered places, and several promising prospects are being investigated by means of trenches and drilling. One magnetite and several hematite prospects were examined but none offers any potential for economic development. Thick beds of gypsum in Lower Cretaceous limestone on Mesa de Los Santos, south of Bucaramanga are being quarried from outcrops for use in cement manufacture. The deposit was discovered shortly before the present project began, and although its extent beneath overlying strata is not yet determined by drilling, it appears to be in a small evaporite basin of about three kilometers in radius. Reserves of gypsum are large, but future development will have to be by underground mining. Outcrops of Cretaceous limestone of high purity are widespread and are more than adequate to meet all demands, which at present are for cement and calcined lime, road construction material, and to a small extent for agricultural lime and polished decorative stone. Upper Paleozoic limestone of the Diamante Formation crops out in a few places; it has been used near Bucaramanga for cement manufacture. Marble is present in several localities of the Santander massif in Lower Paleozoic and Devonian rocks. Impurities, fractures, and solution cavities render most of it unsuitable for decorative purposes, but selected parts are used in floor tile and terrazo. Recrystallized limestone of the Diamante Formation in the same area, usually referred to as marble, is of uniform high purity throughout a thick and uninterrupted section, and offers a good source of limestone raw material. A little is now used for agricultural lime. The potential of this resource has not been fully evalua

  3. Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico

    USGS Publications Warehouse

    Des Marais, D.J.; Stallard, M.L.; Nehring, N.L.; Truesdell, A.H.

    1988-01-01

    Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330??C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher ??13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400??C) and higher (600??C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments. ?? 1988.

  4. Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico

    NASA Technical Reports Server (NTRS)

    Des Marais, D. J.; Stallard, M. L.; Nehring, N. L.; Truesdell, A. H.

    1988-01-01

    Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330 degrees C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher delta 13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400 degrees C) and higher (600 degrees C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments.

  5. Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico.

    PubMed

    Des Marais, D J; Stallard, M L; Nehring, N L; Truesdell, A H

    1988-01-01

    Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330 degrees C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher delta 13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400 degrees C) and higher (600 degrees C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments.

  6. A Descriptive Case Study of a School-Wide Positive Behavior Support (PBS) System in Schools with Principal-Led Planning Teams and Coach-Led Planning Teams

    ERIC Educational Resources Information Center

    McWilliams, Ellen K.

    2011-01-01

    Managing disruptive behaviors in schools is a high-ranking concern in communities across the country (Rose & Gallup, 2006). Unfortunately, the practice of instituting tougher and more severe consequences for increased discipline problems has not resulted in a decrease of disruptive behavior (Lewis & Garrison-Harrell, 1999; Safran & Oswald, 2003;…

  7. Evolution insolite d'une plaie complexe de la voie biliaire principale post cholécystectomie cœlioscopique

    PubMed Central

    Mohamed, Hedfi; Hala, Bouhafa; Youssef, Elcadhi; Abdelhedi, Cherif; Karim, Sassi; Azza, Sridi; Adnen, Chouchene

    2016-01-01

    Depuis l'avènement de la chirurgie coelioscopique de la lithiase biliaire le nombre de plaies des voies biliaires a sensiblement augmenté dans la littérature en rapport avec la courbe d'apprentissage des opérateurs. Les plaies méconnues peuvent avoir des conséquences immédiates dramatiques et évoluer vers la péritonite biliaire. Ailleurs la réparation des fistules biliaires externes au stade de dilatation des voies biliaires nécessite une anastomose bilio digestive ou des résections hépatiques réglées. PMID:27279975

  8. The origin of increased salinity in the Cambrian-Vendian aquifer system on the Kopli Peninsula, northern Estonia

    NASA Astrophysics Data System (ADS)

    Karro, Enn; Marandi, Andres; Vaikmäe, Rein

    , qui renferme des eaux souterraines salines dans sa partie supérieure altérée et fissurée, et est hydrauliquement connecté avec l'aquifère supérieur du Cambrien-Vendien, est la deuxième importante source d'ions. Le soubassement fracturé et le matériel argileux de l'altération, renferme l'eau souterraine de type Ca-Cl, caractérisée par un haut TDS (2-20 g/l). A cause de la mobilisation intensive de l'eau les échanges d'eau souterraine est sont accélérés et la zone d'influence des pompages augmentent. Les études chimiques et isotopiques indiquent une contribution croissante du drainage des eaux du soubassement cristallin. L'intrusion d'eaux salées de la mer dans le système aquifère n'est pas un phénomène évident. El origen del incremento en salinidad en un sistema de acuíferos Cámbrico-Vendiano en la Península Kopli, norte de Estonie Monitoreo a largo plazo de un sistema de acuíferos confinados, de edad Cámbrico-Vendiano, que se utiliza como fuente de abastecimiento industrial en la Península Kopli, al norte de Estonie, revela cambios notables en la composición química del agua subterránea. Un incremento de 1.5 a 3 veces en TDS y en concentraciones de iones mayores en agua subterránea explotada ha sido ocasionado por bombeo fuerte. Las fuentes principales de carga disuelta en el agua subterránea Cámbrico-Vendiano son la lixiviación de la roca encajonante y los procesos geoquímicos que ocurren en la zona saturada. Basamento cristalino subyacente, que aloja agua subterránea salada en la parte superior intemperizada y fisurada, y está conectado hidráulicamente con el sistema acuífero Cámbrico-Vendiano sobreyacente, es la segunda fuente importante de iones. El basamento fracturado y su corteza de intemperismo arcillosa alojan agua subterránea de tipo Ca-Cl la cual se caracteriza por valores altos de TDS (2-20 g/l). Debido a extracción intensiva se ha acelerado el intercambio de agua subterránea y se ha incrementado el área de

  9. The origin of increased salinity in the Cambrian-Vendian aquifer system on the Kopli Peninsula, northern Estonia

    NASA Astrophysics Data System (ADS)

    Karro, Enn; Marandi, Andres; Vaikmäe, Rein

    , qui renferme des eaux souterraines salines dans sa partie supérieure altérée et fissurée, et est hydrauliquement connecté avec l'aquifère supérieur du Cambrien-Vendien, est la deuxième importante source d'ions. Le soubassement fracturé et le matériel argileux de l'altération, renferme l'eau souterraine de type Ca-Cl, caractérisée par un haut TDS (2-20 g/l). A cause de la mobilisation intensive de l'eau les échanges d'eau souterraine est sont accélérés et la zone d'influence des pompages augmentent. Les études chimiques et isotopiques indiquent une contribution croissante du drainage des eaux du soubassement cristallin. L'intrusion d'eaux salées de la mer dans le système aquifère n'est pas un phénomène évident. El origen del incremento en salinidad en un sistema de acuíferos Cámbrico-Vendiano en la Península Kopli, norte de Estonie Monitoreo a largo plazo de un sistema de acuíferos confinados, de edad Cámbrico-Vendiano, que se utiliza como fuente de abastecimiento industrial en la Península Kopli, al norte de Estonie, revela cambios notables en la composición química del agua subterránea. Un incremento de 1.5 a 3 veces en TDS y en concentraciones de iones mayores en agua subterránea explotada ha sido ocasionado por bombeo fuerte. Las fuentes principales de carga disuelta en el agua subterránea Cámbrico-Vendiano son la lixiviación de la roca encajonante y los procesos geoquímicos que ocurren en la zona saturada. Basamento cristalino subyacente, que aloja agua subterránea salada en la parte superior intemperizada y fisurada, y está conectado hidráulicamente con el sistema acuífero Cámbrico-Vendiano sobreyacente, es la segunda fuente importante de iones. El basamento fracturado y su corteza de intemperismo arcillosa alojan agua subterránea de tipo Ca-Cl la cual se caracteriza por valores altos de TDS (2-20 g/l). Debido a extracción intensiva se ha acelerado el intercambio de agua subterránea y se ha incrementado el área de

  10. Recopilacion Bibliografica Sobre Investigacion y Cambio Cultural (Bibliographic Compilation about Cultural Investigation and Exchange).

    ERIC Educational Resources Information Center

    Centro Latinoamericano de Educacion de Adultos, Santiago (Chile).

    The bibliography forms part of a project to define guidelines for a method of cultural investigation in the education of adults. A brief introduction is followed by a list of libraries and the plan for the listing of entries in the bibliography. Entries are arranged alphabetically by author under the following general headings: background on the…

  11. Cambio en las escuelas: Mexican-American parent attitudes toward school health education.

    PubMed

    Colwell, B; Smith, D; Zhang, J J; Hill, M

    2000-10-01

    The purpose of this study was to determine the attitudes of Mexican-American (MA) parents of children toward school health education programs in South Texas. The Parent Attitude Scale (PAS) was developed and validated by American Cancer Society (ACS) staff and volunteer health educators. The validated survey was used to question randomly selected parents in the McAllen, Texas, school district regarding their attitudes toward school health education. Of 253 parents contacted, 235 (92.9%) parents were interviewed. Mann-Whitney U-Tests indicated that Mexican-American (MA) parents consider school health education to be more important than non-Mexican-American parents do. MA parents, overall, felt that it was more important that their child has good health habits and more important that their child's teacher provide support to them by teaching good health habits than non-MA parents. MA parents also felt that health was more important relative to other subjects at school than non-MA parents. The data indicate strong support for school health education efforts among MA parents in southern Texas. Such support may grow stronger with appropriate parent-recruitment efforts, including those by the ACS. Mexican-American parents may also represent an untapped resource for social and political support for school health programming.

  12. "Making Cambios, Usando la Voz": Addressing Ethical Dilemmas of Education in Immigrant Contexts

    ERIC Educational Resources Information Center

    Zarate, Adanari D.; Reese, Leslie; Flores, David; Villegas, Jisel

    2016-01-01

    The growing population of immigrant youth in the United States includes both documented and undocumented young people, as well as those who live in mixed status families in which some family members are authorized and at least one other family member is not (Suárez-Orozco, et al., 2011). These young people find themselves residing at the center of…

  13. Teaching Probability for Conceptual Change (La Ensenanza de la Probabilidad por Cambio Conceptual).

    ERIC Educational Resources Information Center

    Castro, Cesar Saenz

    1998-01-01

    Presents a theoretical proposal of a methodology for the teaching of probability theory. Discusses the importance of the epistemological approach of Lakatos and the perspective of the conceptual change. Discusses research using a proposed didactic method with Spanish high school students (N=6). Concludes that significant differences on all…

  14. Cambio En Las Escuelas: Mexican-American Parent Attitudes toward School Health Education.

    ERIC Educational Resources Information Center

    Colwell, Brian; Smith, Dennis; Zhang, James J.; Hill, Mike

    2000-01-01

    Surveyed Mexican-American (MA) and non-MA parents regarding their attitudes toward school health education and its place in the curriculum. There was widespread support for quality comprehensive school health education. MA parents considered school health education more important than non-MA parents. They also considered health was more important…

  15. [Cutaneous myiasis by Cochliomyia hominivorax (Coquerel) (Diptera Calliphoridae) in Hospital Universidad del Norte, Soledad, Atlántico].

    PubMed

    de la Ossa, Napoleón; Castro, Luis Eduardo; Visbal, Lila; Santos, Ana María; Díaz, Esther; Romero-Vivas, Claudia M E

    2009-03-01

    Human myiasis is the parasitism of human tissues by fly larvae. Diagnoses are based on clinical pattern of tissue damage and presence of insect stages. Herein, a case myiasis is described in a seven-year-old female child. She presented with fever associated with abscessed scalp lesions containing exposed larvae. Severe pediculosis was also observed. The patient was hospitalized and treated with clindamycin, gentamicin (for bacterial secondary infections) and ivermectin (treatment for lice) after which the patient showed clinical improvement and was discharged four days later. Since human myiasis can be caused by a number of different species, larvae were collected from the patient and identified as those of Cochliomyia hominivorax (Diptera: Calliphoridae). Because other cases of coinfestation of flies and lice are on record, health workers are to be alerted about the possible pediculosis-myasis risk. PMID:19753834

  16. Is the Caribbean plate subducting underneath Hispaniola? Preliminary results from Caribe Norte wide-angle seismic experiment

    NASA Astrophysics Data System (ADS)

    Llanes Estrada, M.; ten Brink, U. S.; Carbo-Gorosabel, A.; Granja Bruña, J.; Flores, C. H.; Davila, J. M.; Pazos, A.; Quijano, J.

    2010-12-01

    A 200 km long, wide-angle seismic refraction transect was collected in the spring of 2009, across the widest part of the Muertos compressive margin (longitude 69°W). The transect was designed to test the hypothesized subduction of the Caribbean plate’s interior beneath the eastern Greater Antilles island arc. Shots were fired every 90 seconds from the R/V Hesperides’ 3850 cubic inches water-gun array, which, towed at 5 knots, resulted in a shot spacing of ~ 230 m. The seismic signal was recorded by 5 ocean-bottom seismometers deployed at distances varying from 25 to 50 km. Gravity, bathymetry and magnetic data were also acquired along that transect. Published and reprocessed reflection seismic lines nearby provided an initial model of the sediment column and on the pattern of upper crustal reflectors. Preliminary results of a 2-D forward ray-tracing model have enabled us to outline the broad-scale crustal structure across the Muertos margin. The Caribbean oceanic slab shows considerable variations in crustal thickness in the Venezuelan basin area (Caribbean plate’s interior). Farther north, the slab is imaged underneath the Muertos margin to about 60 km north of the deformation front and up to 19 km depth,. A change in crustal p wave velocity at about 60 km from the deformation front (or 70 km from the southern coast of the Dominican Republic) is interpreted to be the boundary between the arc crust and the accretionary prism. Caribbean oceanic crust does not appear to extend farther north. We interpret the results to indicate limited overthrusting of the Caribbean slab in the muertos Trough, rather than subduction.

  17. Medicinal plants used in a Totonac community of the Sierra Norte de Puebla: Tuzamapan de Galeana, Puebla, Mexico.

    PubMed

    Martinez Alfaro, M A

    1984-07-01

    Totonac Indians, like other aboriginal peoples, use many plants, animals and minerals in treating illness. We collected our information among mountain dwelling Totonacs (totonacos de la Sierra). These Totonacs from the mountain areas are only beginning to be studied from an ethnobotanical viewpoint. Here we report on their herbal remedies and briefly discuss their traditional medicine. Finally, the role of Western medicine in Totonac life is analyzed.

  18. 76 FR 62060 - NortHydro, LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-06

    ... operated by the South Columbia Basin Irrigation District. The wasteway functions as a diversion of surplus water from the irrigation system to the existing Scooteney reservoir. The sole purpose of a preliminary... prior registration, using the eComment system at http://www.ferc.gov/docs-filing/ecomment.asp . You...

  19. 76 FR 62061 - NortHydro, LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-06

    ... operated by the South Columbia Basin Irrigation District. The wasteway functions as a diversion of surplus water from the irrigation system. The sole purpose of a preliminary permit, if issued, is to grant the... characters, without prior registration, using the eComment system at...

  20. 76 FR 62060 - NortHydro, LLC.; Notice of Preliminary Permit Application Accepted for Filing and Soliciting...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-06

    ... operated by the South Columbia Basin Irrigation District. The wasteway functions as a diversion of surplus water from the irrigation system. The sole purpose of a preliminary permit, if issued, is to grant the... characters, without prior registration, using the eComment system at...

  1. [Cutaneous myiasis by Cochliomyia hominivorax (Coquerel) (Diptera Calliphoridae) in Hospital Universidad del Norte, Soledad, Atlántico].

    PubMed

    de la Ossa, Napoleón; Castro, Luis Eduardo; Visbal, Lila; Santos, Ana María; Díaz, Esther; Romero-Vivas, Claudia M E

    2009-03-01

    Human myiasis is the parasitism of human tissues by fly larvae. Diagnoses are based on clinical pattern of tissue damage and presence of insect stages. Herein, a case myiasis is described in a seven-year-old female child. She presented with fever associated with abscessed scalp lesions containing exposed larvae. Severe pediculosis was also observed. The patient was hospitalized and treated with clindamycin, gentamicin (for bacterial secondary infections) and ivermectin (treatment for lice) after which the patient showed clinical improvement and was discharged four days later. Since human myiasis can be caused by a number of different species, larvae were collected from the patient and identified as those of Cochliomyia hominivorax (Diptera: Calliphoridae). Because other cases of coinfestation of flies and lice are on record, health workers are to be alerted about the possible pediculosis-myasis risk.

  2. Water chemistry of the Redwood Creek and Mill Creek basins, Redwood National Park, Humboldt and Del Norte Counties, California

    USGS Publications Warehouse

    Bradford, Wesley L.; Iwatsubo, Rick T.

    1978-01-01

    A two-year study made in Redwood National Park, Calif., (September 1973-September 1975) determined existing chemical water-quality conditions and identified possible effects of logging on water quality in streams. Water quality was generally good, with dissolved-solids concentrations ranging from 25 to 139 milligrams per liter in the Redwood Creek basin and 21 to 49 milligrams per liter in the Mill Creek basin. Water type and pH tended to shift seasonally. Exposure of soils to the elements in areas logged or having naturally sparse vegetation accelerated chemical weathering and increased dissolved-solids concentrations. Nitrogen and phosphorus concentrations were generally too low to support nuisance algae, but were higher in logged areas. Higher nitrogen concentrations in areas well exposed to sunlight could support modest algae populations. Trace-metal concentrations were low, typical of clean streams. (Woodard-USGS)

  3. Cytotoxic responses and potential respiratory health effects of carbon and carbonaceous nanoparticulates in the Paso del Norte airshed environment.

    PubMed

    Soto, K F; Murr, L E; Garza, K M

    2008-03-01

    We have utilized a range of manufactured or commercial nanoparticulate materials, including surrogate carbon nano-PM along with combustion-generated carbonaceous (soot) nano-PM characteristic of environmental nano- PM (both indoor and outdoor) to investigate and compare their cytotoxic response in vitro with an immortalized human epithelial (lung model) cell line (A549). These have included nano-Ag, Al2O3, TiO2, Fe2O3, ZrO2, Si3N4, chrysotile asbestos, BC, 2 types of MWCNT-aggregate PM (MWCNT-R and MWCNT-N), and high-volume glass fiber collected soots: candle, wood, diesel (truck), tire, and 3-types of natural gas kitchen burner-generated soots: yellow (fuel-rich) flame, low-flow blue flame, and normal flow blue flame soot PM. These carbonaceous nano-PM species can be found in either the indoor and outdoor environments or microenvironments. Two-day and two-week in-vitro cultures of A549 showed cell death (or decreased cell viability) for all nanoparticulate materials, but especially significant for all but the TiO2 and candle, wood, and diesel PM. The natural gas kitchen burner combustion PM cell death response was characteristic of BC and MWCNT PM. There was no correlation with total PAH content of the soot PM. Cytokine release (IL-6, IL-8) was detected for the Ag, Fe2 O3, asbestos, BC and the MWCNT PM. Reactive oxygen species (ROS) production was also detected for Ag, Fe2 O3, ZrO2, asbestos, BC, and the MWCNT aggregate PM, as well as the natural gas kitchen burner combustion PM. TEM, FESEM, and optical microscopy examination of these nanomaterials illustrate the wide range in PM morphologies and crystallinities as well as cell morphologies. Taken together, these results illustrate proinflammatory and related respiratory health issues in relation to environmental nanoparticulates.

  4. Cytotoxic Responses and Potential Respiratory Health Effects of Carbon and Carbonaceous Nanoparticulates in the Paso del Norte Airshed Environment

    PubMed Central

    Soto, K. F.; Murr, L. E.; Garza, K. M.

    2008-01-01

    We have utilized a range of manufactured or commercial nanoparticulate materials, including surrogate carbon nano-PM along with combustion-generated carbonaceous (soot) nano-PM characteristic of environmental nano-PM (both indoor and outdoor) to investigate and compare their cytotoxic response in vitro with an immortalized human epithelial (lung model) cell line (A549). These have included nano-Ag, Al2O3, TiO2, Fe2O3, ZrO2, Si3N4, chrysotile asbestos, BC, 2 types of MWCNT-aggregate PM (MWCNT-R and MWCNT-N), and high-volume glass fiber collected soots: candle, wood, diesel (truck), tire, and 3-types of natural gas kitchen burner-generated soots: yellow (fuel-rich) flame, low-flow blue flame, and normal flow blue flame soot PM. These carbonaceous nano-PM species can be found in either the indoor and outdoor environments or microenvironments. Two-day and two-week in-vitro cultures of A549 showed cell death (or decreased cell viability) for all nanoparticulate materials, but especially significant for all but the TiO2 and candle, wood, and diesel PM. The natural gas kitchen burner combustion PM cell death response was characteristic of BC and MWCNT PM. There was no correlation with total PAH content of the soot PM. Cytokine release (IL-6, IL-8) was detected for the Ag, Fe2 O3, asbestos, BC and the MWCNT PM. Reactive oxygen species (ROS) production was also detected for Ag, Fe2 O3, ZrO2, asbestos, BC, and the MWCNT aggregate PM, as well as the natural gas kitchen burner combustion PM. TEM, FESEM, and optical microscopy examination of these nanomaterials illustrate the wide range in PM morphologies and crystallinities as well as cell morphologies. Taken together, these results illustrate proinflammatory and related respiratory health issues in relation to environmental nanoparticulates. PMID:18441401

  5. Characterization of risk/exposure to climate extremes for the Brazilian Northeast—case study: Rio Grande do Norte

    NASA Astrophysics Data System (ADS)

    Silva, Bruce Kelly N.; Lucio, Paulo Sergio

    2015-10-01

    Climate change would increase the risk of floods or droughts. So far, only a few studies have projected changes in extremes on a regional or local scale. None of these studies relied on multiple climate proxies. Only some studies have started to estimate the exposure to flooding or drought as a proxy of risk; so, here, we present an exercise in risk analysis. Studies of climate change and its impacts rarely yield consensus on the distribution of exposure, vulnerability or possible outcomes. In addition, Northeast Brazil (NEB) is known for its temporal and spatial variability of rainfall and several studies have investigated this variability in order to understand damaging episodes such as droughts and floods. In NEB, the phenomenon of drought is a complex issue because millions of people are affected, and so, it is an important object of study in various fields of knowledge. One way of trying to argue about this phenomenon is through the concept of vulnerability. In this preliminary study, one will determine the risk or exposure factor to drought, which is one component of vulnerability, mainly concerning agricultural activities. The drought risk/exposure indicator was constructed based on three indices: the standardized precipitation index (SPI), the precipitation concentration period (PCP) and the precipitation concentration degree (PCD). The exposure indices showed an increase in high values from 1979 to 2008. On the contrary, the period from 1967 to 1996 showed that the risk factor in some micro-regions had low indices in a larger number; one can note that the dynamics of the factor is in an evolution between high and extremes.

  6. Dios y el Norte: The Perceptions of Wives of Documented and Undocumented Mexican Immigrants to the United States.

    ERIC Educational Resources Information Center

    Salgado de Snyder, V. Nelly; And Others

    1996-01-01

    Interviews concerning attitudes and beliefs about Mexicans and Americans and about life in Mexico and the United States were conducted with 24 wives of Mexican workers in the United States; wives were living permanently in rural Jalisco, Mexico. Topics included moral values, educational attitudes, child rearing, quality of life, California's…

  7. Cytotoxic responses and potential respiratory health effects of carbon and carbonaceous nanoparticulates in the Paso del Norte airshed environment.

    PubMed

    Soto, K F; Murr, L E; Garza, K M

    2008-03-01

    We have utilized a range of manufactured or commercial nanoparticulate materials, including surrogate carbon nano-PM along with combustion-generated carbonaceous (soot) nano-PM characteristic of environmental nano- PM (both indoor and outdoor) to investigate and compare their cytotoxic response in vitro with an immortalized human epithelial (lung model) cell line (A549). These have included nano-Ag, Al2O3, TiO2, Fe2O3, ZrO2, Si3N4, chrysotile asbestos, BC, 2 types of MWCNT-aggregate PM (MWCNT-R and MWCNT-N), and high-volume glass fiber collected soots: candle, wood, diesel (truck), tire, and 3-types of natural gas kitchen burner-generated soots: yellow (fuel-rich) flame, low-flow blue flame, and normal flow blue flame soot PM. These carbonaceous nano-PM species can be found in either the indoor and outdoor environments or microenvironments. Two-day and two-week in-vitro cultures of A549 showed cell death (or decreased cell viability) for all nanoparticulate materials, but especially significant for all but the TiO2 and candle, wood, and diesel PM. The natural gas kitchen burner combustion PM cell death response was characteristic of BC and MWCNT PM. There was no correlation with total PAH content of the soot PM. Cytokine release (IL-6, IL-8) was detected for the Ag, Fe2 O3, asbestos, BC and the MWCNT PM. Reactive oxygen species (ROS) production was also detected for Ag, Fe2 O3, ZrO2, asbestos, BC, and the MWCNT aggregate PM, as well as the natural gas kitchen burner combustion PM. TEM, FESEM, and optical microscopy examination of these nanomaterials illustrate the wide range in PM morphologies and crystallinities as well as cell morphologies. Taken together, these results illustrate proinflammatory and related respiratory health issues in relation to environmental nanoparticulates. PMID:18441401

  8. Aquatic biology of the Redwood Creek and Mill Creek drainage basins, Redwood National Park, Humboldt and Del Norte counties, California

    USGS Publications Warehouse

    Iwatsubo, Rick T.; Averett, R.C.

    1981-01-01

    A 2-year study of the aquatic biota in the Redwood Creek and Mill Creek drainage basins of Redwood National Park indicated that the aquatic productivity is low. Densities of coliform bacteria were low except in Prairie Creek, a tributary to Redwood Creek, where a State park, county fish hatchery, grazing land, lumber mill, and scattered residential areas are potential sources of fecal coliform bacteria. Benthic invertebrate data indicated a diverse fauna which varied considerably between streams and among stream sections. Noteworthy findings include: (1) benthic invertebrates rapidly recolonized the streambed following a major storm, and (2) man-caused disruption or sedimentation of the streambed during low flow can result in drastic reductions of the benthic invertebrate community. Seven species of fish representing species typically found in northern California coastal streams were captured during the study. Nonparametric statistical tests indicate that condition factors of steelhead trout were significantly larger at sampling stations with more insolation, regardless of drainage basin land-use history. Periphyton and phytoplankton communities were diverse, variable in numbers, and dominated by diatoms. Seston concentrations were extremely variable between stations and at each station sampled. The seston is influenced seasonally by aquatic productivity at each station and amount of allochthonous material from the terrestrial ecosystem. Time-series analysis of some seston data indicated larger and sharper peak concentrations being flushed from the logged drainage basin than from the control drainage basin. (USGS)

  9. A new derived and highly polymorphic chromosomal race of Liolaemus monticola (Iguanidae) from the 'Norte Chico' of Chile.

    PubMed

    Lamborot, M

    1998-06-01

    A multiple Robertsonian fission chromosomal race of the Liolaemus monticola complex in Chile is described and is shown to be the most derived and the most complex among the Liolaemus examined thus far. The 29 karyotyped lizards analysed from the locality of Mina Hierro Viejo, Petorca, Provincia de Valparaiso, Chile, exhibited a diploid chromosomal number ranging from 42 to 44, and several polymorphisms. The polymorphisms included: a pair 1 fission; a pair 2 fission plus a pericentric inversion in one of the fission products, which moved the NOR and satellite from the tip of the long arm of the metacentric 2 to the short arm of the fission product; a fission in pair 3; a polymorphism for an enlarged chromosome pair 6; and a polymorphism for a pericentric inversion in pair 7. This population is fixed for a fission of chromosome pair 4. A total of 76% of the lizards analysed were polymorphic for one or more pairs of chromosomes. We have compared these data with other Liolaemus monticola chromosomal races and calculated the Hardy-Weinberg ratios for the polymorphic chromosome pairs in this Multiple-Fission race. Karyotypic differences between the Northern (2n = 38-40) and the Multiple-Fission (2n = 42-44) races were attributed mainly to Robertsonian fissions, an enlarged chromosome and pericentric inversions involving the macrochromosomes and one microchromosome pair. PMID:9688513

  10. Geological and geochemical reconnaissance in the central Santander Massif, Departments of Santander and Norte de Santander, Colombia

    USGS Publications Warehouse

    Evans, James George

    1976-01-01

    The central Santander Massif is composed of Precambrian Bucaramanga Gneiss and pre-Devonian Silgara Formation intruded by Mesozoic quartz diorite, quartz monzonite, and alaskite and Cretaceous or younger porphyry. Triassic (Bocas Formation), Jurassic (Jordan and Giron Formations).and Cretaceous (Tambor, Rosa Blanca, Paja, Tablazo, Simiti, La Luna, and Umir Formations) sedimentary rocks overlie the metamorphic rocks and are younger than most of the intrusions. A geological and geochemical reconnaissance of part of the central Santander Massif included the Vetas and California gold districts. At Vetas the gold is generally in brecciated aphanitic quartz and phyllonite. Dark-gray material in the ore may be graphite. The ore veins follow steep west-northwest- and north-northeast-striking fracture zones. No new gold deposits were found. Additional geochemical studies should concentrate on western Loma Pozo del Rey and on improvement of the gold extraction process. At California the gold is in pyritiferous quartz veins and quartz breccia. Ore containing black sooty material (graphite?) is highly radioactive. Some of the mineralization is post-Lower Cretaceous. Soil samples indicate that gold deposits lie under the thick blanket of soil on the ridges above the zone of mining. Three principal gold targets are outlined by gold and associated minerals in pan concentrates. The close relation of gold and copper anomalies suggests that copper may be useful as a pathfinder for gold elsewhere in the region. Based on occurrences of gold or high concentrations of pyrite or chalcopyrite in pan concentrates and on analytical data, eight potential gold targets are outlined in the central massif. Reconnaissance of the surrounding region is warranted.

  11. A legacy of change: The lower Colorado River, Arizona-California-Nevada, USA, and Sonora-Baja California Norte, Mexico

    USGS Publications Warehouse

    Mueller, G.A.; Marsh, P.C.; Minckley, W.L.

    2005-01-01

    The lower Colorado is among the most regulated rivers in the world. It ranks as the fifth largest river in volume in the coterminous United States, but its flow is fully allocated and no longer reaches the sea. Lower basin reservoirs flood nearly one third of the river channel and store 2 years of annual flow. Diverted water irrigates 1.5 million ha of cropland and provides water for industry and domestic use by 22 million people in the southwestern United States and northern Mexico. The native fish community of the lower Colorado River was among the most unique in the world, and the main stem was home to nine freshwater species, all of which were endemic to the basin. Today, five are extirpated, seven are federally endangered, and three are being reintroduced through stocking. Decline of the native fauna is attributed to predation by nonnative fishes and physical habitat degradation. Nearly 80 alien species have been introduced, and more than 20 now are common. These nonnative species thrived in modified habitats, where they largely eliminated the native kinds. As a result, the lower Colorado River has the dubious distinction of being among the few major rivers of the world with an entirely introduced fish fauna. ?? 2005 by the American Fisheries Society.

  12. 75 FR 73069 - NortHydro, LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-29

    ... preliminary permit pursuant to section 4(f) of the Federal Power Act (FPA), proposing to study the feasibility of the Boulder Creek Water Power Project (Boulder Creek project) to be located on Boulder Creek...

  13. La Formacion Docente y la Educacion Primaria en Una Propuesta de Cambio (Teacher Training on Education: A Proposal for Change).

    ERIC Educational Resources Information Center

    Fernandez, Enrique Alonso, Ed.

    In order to raise the quality of teaching and teacher education in Uruguay, a program of innovation and change was considered at a 1986 educational conference. Conference goals included identifying ways to: (1) increase opportunities to promote innovation and change; (2) search for strategies to encourage creative problem solving; (3) increase…

  14. Reggio Emilia: impulsor del dialogo y del cambio (Reggio Emilia: Catalyst for Change and Conversation). ERIC Digest.

    ERIC Educational Resources Information Center

    New, Rebecca S.

    International perspectives on the care and education of preschool children that seem to be of greatest interest in the United States are those directly linked to prevailing concerns in American early childhood education. In this context, many early childhood specialists have explored the implications of Reggio Emilia's work for the theory,…

  15. Significado de los cambios en el cuello uterino: Guía para la salud de la mujer

    Cancer.gov

    Explica qué es la infección por el VPH; los exámenes de detección del cáncer de cuello uterino, entre ellos la prueba de Pap, la prueba del VPH y la prueba conjunta de Pap y del VPH; las pautas para los exámenes de detección; los posibles resultados de la

  16. Comprehensive quality evaluation of Chishao by HPLC.

    PubMed

    Zaiyou, Jian; Wenquan, Wang; Guifang, Xu; Li, Meng; Junling, Hou

    2013-01-01

    Objetivo: El propósito de este artículo es la evaluación cualitativa extensa de Chishao. Métodos: En el experimento de este trabajo, se establecen los espectros de identificación de Chishao en todas las localizaciones mediante RP-HPLC y el método del análisis de componentes principales con las áreas pico de RPHPLC. Resultados: La calidad de Chishao en el norte de China o del procedente de Paeonia lactiflora es mejor que la de otras localizaciones o procedente de P. obovata, P. mairei y P. anomala. Los resultados son congruentes con la impresión tradicional de la calidad de esta planta. Estos resultados indican que el análisis de los componentes principales (ACP) puede utilizarse como método eficaz y económico para evaluar la calidad de Chishao y podría aplicarse a otras plantas medicinales chinas. Conclusiones: Dada la complicada base de la eficacia de la Medicina tradicional china (MTC), un método como el ACP para diversos componentes químicos parece ser más adecuado para la evaluación de la calidad de la MTC en comparación con la determinación de un único o unos pocos agentes químicos.

  17. FOOD CONSUMPTION PATTERNS DURING PREGNANCY: A LONGITUDINAL STUDY IN A REGION OF THE NORTH EAST OF BRAZIL.

    PubMed

    Da Mota Santana, Jerusa; Alves de Oliveira Queiroz, Valterlinda; Monteiro Brito, Sheila; Barbosa Dos Santos, Djanilson; Marlucia Oliveira Assis, Ana

    2015-07-01

    Introducción: las perspectivas de crecimiento en Brasil indican que los patrones dietéticos de la población se caracterizan por el aumento del consumo de grasas saturadas y trans, sodio, azúcares y refrescos. Este punto de vista epidemiológico y nutricional refleja el cambio en el patrón de la enfermedad y la muerte. Objetivo: este estudio tiene como objetivo identificar los patrones de consumo de alimentos y los cambios en la dieta en el primer y tercer trimestres del embarazo. Metodología: se trata de un estudio de cohorte prospectivo de 185 mujeres embarazadas del Estado de Bahía, a partir de 2012 a 2013. Se utilizó el cuestionario de frecuencia de alimentos para evaluar la ingesta alimentaria. Para identificar la norma alimentaria se adoptó el análisis factorial de componentes principales. Se utilizó la prueba de correlación de Pearson para identificar la correlación entre los patrones extraídos en cada trimestre. Resultados: se identificaron cuatro patrones de consumo de alimentos durante el embarazo. Hemos observado cambios en los patrones de alimentación durante los trimestres evaluados, especialmente para los grupos de frutas, café, grasas, frituras, azúcar y dulces. Discusión: estos cambios en la dieta durante el embarazo acompañan a los cambios fisiológicos de cada embarazo. En el primer trimestre son síntomas comunes las náuseas y los vómitos; por otro lado, también se manifiesta antojos en el mismo periodo, lo cual puede justificar el consumo de mayor cantidad de alimentos considerados saludables. Conclusión: se observaron cambios en el patrón alimentario a lo largo de los diversos trimestres del embarazo examinados, especialmente para los grupos de frutas, café, grasas, frituras, azúcar y dulces.

  18. Nutrition Knowledge Predicts Eating Behavior of All Food Groups "except" Fruits and Vegetables among Adults in the Paso del Norte Region: Que Sabrosa Vida

    ERIC Educational Resources Information Center

    Sharma, Shreela V.; Gernand, Alison D.; Day, R. Sue

    2008-01-01

    Objective: To examine the association between nutrition knowledge and eating behavior in a predominantly Mexican American population on the Texas-Mexico border. Design: Cross-sectional using data from the baseline survey of the Que Sabrosa Vida community nutrition initiative. Setting: El Paso and surrounding counties in Texas. Participants: Data…

  19. A Smoke-Free Paso del Norte: Impact Over 10 Years on Smoking Prevalence Using the Behavioral Risk Factor Surveillance System

    PubMed Central

    Taylor, Thom; Hernandez, Nora; Kelly, Michael; Law, Jon; Colwell, Brian

    2012-01-01

    Objectives. We assessed the impact of a tobacco control initiative over 10 years on cessation and prevention. Methods. We examined 2000–2009 Behavioral Risk Factor Surveillance System cases of a metropolitan statistical area (MSA) with systematic tobacco control efforts throughout the decade (El Paso, TX) and 2 comparison MSAs similar in size and population with less coordinated tobacco control efforts (Austin-Round Rock, TX and San Antonio, TX). Results. Yearly, El Paso exhibited a 6% increase in the prevalence of former smokers, a 6% decrease in prevalence of daily smokers, and a 7% decrease in the prevalence of established smoking (≥ 100 cigarettes per lifetime and currently smoking); we did not observe similar trends in the comparison MSAs. There was no change in the prevalence of nondaily smokers in any of the MSAs. Conclusions. The coordinated tobacco control activities in El Paso are related to cessation among daily smokers and prevention of established smoking at the population level but have not stimulated cessation among nondaily smokers. Comprehensive tobacco control should focus more on not only daily smokers but also nondaily smokers. PMID:22494000

  20. High resolution sup 40 Ar/ sup 39 Ar chronostratigraphy of the Late Cretaceous El Gallo Formation, Baja California del Norte, Mexico

    SciTech Connect

    Fulford, M.M.; Busby-Spera, C. ); Renne, P.R.

    1991-03-01

    Laser probe {sup 40}Ar/{sup 39}Ar analyses of individual sanidine grains from four tuffs in the alluvial Late Cretaceous (Campanian) El Gallo Formation yield statistically distinct mean dates ranging from 74.87 {plus minus} 0.05 Ma to 73.59 {plus minus} 0.09 Ma. The exceptional precision of these dates permits calculation of statistically significant sediment accumulation rates that are much higher than passive sediment loading would cause, implying rapid tectonically induced subsidence. The dates bracket tightly the age of important dinosaur and mammalian faunas previously reported from the El Gallo Formation. The dates support an age less than 73 Ma for the Campanian/Maastrichtian stage boundary, younger than indicated by several currently used time scales. Further application of the single grain {sup 40}Ar/{sup 39}Ar technique may be expected to greatly benefit stratigraphic studies of Mesozoic sedimentary basins and contribute to calibration of biostratigraphic and magnetostratigraphic time scales.

  1. Support Services for Exceptional Students: Butte, Del Norte, Glenn, Humboldt, Lake, Lassen, Mendocino, Modoc, Plumas, Shasta, Siskiyou, Tehama, and Trinity Counties.

    ERIC Educational Resources Information Center

    Hampel, Angelica; And Others

    Intended for use by vocational administrators responsible for mainstreaming handicapped students into vocational education classes, the resource guide lists and describes governmental and private agencies that provide vocational programs and support services for the handicapped on a local and statewide basis in the California counties of Butte,…

  2. Patterns of variation of intertidal species of commercial interest in the Parque Litoral Norte (north Portugal) MPA: comparison with three reference shores.

    PubMed

    Bertocci, Iacopo; Dominguez, Rula; Freitas, Cristiano; Sousa-Pinto, Isabel

    2012-06-01

    Marine Protected Areas (MPAs) are world-wide established with the aim of conserving biodiversity and preventing overexploitation of marine organisms. Evaluating the effectiveness of MPAs is needed in order to support and implement their management, but it is complicated by the large natural variability in space and time of distribution and abundance of natural populations. Here, we tested the hypothesis that patterns of total abundance and size-frequency distribution of two intensively harvested intertidal species (the sea urchin Paracentrotus lividus and the mussel Mytilus galloprovincialis) differed between a protected and three reference shores along the rocky coast of north Portugal. Response variables were in terms of mean values and measures of variance at different spatial scales (from centimetres to metres) and over time (along a period of about 12 months). A further comparison involved the estimation of the reproductive potential of sea urchins, quantified as variations of Gonad Index (GI = gonad dry weight/body dry weight × 100) at the scale of shore. Results did not generally support a predictable direct effect of protection, as the total abundance and the abundance of larger individuals of both species and GI did not differ between the MPA and reference shores. However, a considerable temporal and spatial variability at smaller scales was detected for several response variables. Such findings have implications for management of MPAs, highlighting the need for sampling designs properly replicated in space and time, in order to examine their effectiveness, and for considering spatial and temporal heterogeneity of target populations and driving processes as a criterion for their implementation and design. PMID:22401848

  3. [Learning about death from the undergraduate: Evaluation of an educational intervention].

    PubMed

    Álvarez-del Río, Asunción; Torruco-García, Uri; Morales-Castillo, José Daniel; Varela-Ruiz, Margarita

    2015-01-01

    Introducción: de junio a noviembre de 2013 se impartió la asignatura optativa “El médico ante la muerte” en una escuela pública de medicina. El objetivo de este reporte es la evaluación del logro de los objetivos de esta asignatura. Métodos: los principales objetivos de la asignatura fueron desarrollar competencias, aptitud de reflexión ante la muerte y propiciar cambios de actitud ante ella. Cada sesión era antecedida por una lectura relativa al tema; durante las sesiones se propiciaba la interacción con médicos y pacientes que enfrentaban la proximidad de la muerte, se utilizaron recursos audiovisuales, informáticos y se llevaron a cabo discusiones. La evaluación de la asignatura fue mediante un cuestionario retrospectivo como fuente cuantitativa, así como entrevistas semiestructuradas y ensayos como fuentes cualitativas. Resultados: el desarrollo de competencias, aptitud de reflexión ante la muerte y cambios de actitud mostraron un aumento después de la intervención (p < 0.01); la que menor aumento tuvo fue el desarrollo de competencias. Con la información cualitativa se integraron 11 categorías; todas mostraron cambios positivos en actitud ante la muerte, aptitud de reflexión ante ella y competencias desarrolladas (aunque en este aspecto el impacto fue menor). Conclusiones: la intervención educativa evaluada cumplió los objetivos planteados, sin embargo, para futuras intervenciones es necesario reforzar el desarrollo de competencias.

  4. Catalysts for Change: Three Case Studies of Quality Education Worldwide = Catalizadores del Cambio: Tres Casos de Estudio sobre la Educacion de Calidad en el Mundo

    ERIC Educational Resources Information Center

    Puriefoy, Wendy D.

    2007-01-01

    Public education is the cornerstone of democracy and is absolutely fundamental to a democratic, civil and prosperous society. Beyond the boundaries of the United States, other countries are working to provide quality education to their children through civil society institutions. In particular, there are three extraordinary organizations in Peru,…

  5. Comparacion de Modelos de Educacion Sexual en El Conocimiento y Cambio de Actitudes en Practicas Sexuales por Alumnos de Nivel Superior en La Region De Caguas, Puerto Rico

    ERIC Educational Resources Information Center

    Juan, Vallejo Ramos L.

    2012-01-01

    In opposition to the Sexual Education Traditional Model (SETM) that is used in the state schools of Puerto Rico, the Health Beliefs Model (HBM) appears. It facilitates a curricular design that improves the ability of the students to respond to the group pressure by means of attitudes that stimulate sexual conducts of smaller risk of propagation of…

  6. The HoMBReS and HoMBReS Por un Cambio Interventions to Reduce HIV Disparities Among Immigrant Hispanic/Latino Men.

    PubMed

    Rhodes, Scott D; Leichliter, Jami S; Sun, Christina J; Bloom, Fred R

    2016-02-12

    Hispanics/Latinos in the United States are affected disproportionately by human immunodeficiency virus (HIV) infection, acquired immunodeficiency syndrome (AIDS), and other sexually transmitted diseases (STDs); however, few effective evidence-based prevention interventions for this population exist. This report describes the Hombres Manteniendo Bienestar y Relaciones Saludables (Men Maintaining Wellbeing and Healthy Relationships) (HoMBReS) intervention, which was developed by a community-based, participatory research partnership in North Carolina and initially implemented during 2005-2009. HoMBReS is an example of an effective intervention that uses lay health advisors (known as Navegantes [navigators]) in the context of existing social networks (i.e., recreational soccer teams) to promote consistent condom use and HIV and STD testing among Hispanic/Latino men. In 2012, HoMBReS was classified as a best-evidence community-level HIV prevention intervention (CDC. Compendium of evidence-based behavioral interventions and best practices for HIV prevention. Atlanta, GA: US Department of Health and Human Services, CDC; 2015). The intervention has been implemented elsewhere, enhanced, and further evaluated in longitudinal intervention and implementation studies. HoMBReS has been adapted for other populations, including men who have sex with men and transgender persons. Additional evaluation has found that Navegantes continue in their roles as health advisors, opinion leaders, and community advocates after study support ends. Hispanic/Latino men's social networks can be leveraged to promote sexual health within the community by decreasing HIV risk behaviors among Hispanics/Latinos in the United States.

  7. Comparacion de modelos de Educacion Sexual en el conocimiento y cambio de actitudes en practicas sexuales por alumnos de nivel superior en la region de Caguas, Puerto Rico

    NASA Astrophysics Data System (ADS)

    Juan, Vallejo Ramos L.

    In opposition to the Sexual Education Traditional Model (SETM) that is used in the state schools of Puerto Rico, the Health Beliefs Model (HBM) appears. It facilitates a curricular design that improves the ability of the students to respond to the group pressure by means of attitudes that stimulate sexual conducts of smaller risk of propagation of the Sexually Transmitted Diseases (STD). In addition, it provides activities to increase the self-esteem, the communication and the decision making. This investigation had the intention to compare the SETM and the HBM in the increase of knowledge and change of attitudes of high risk of propagation of the STD using a validated questionnaire (Agency of the United States for the International-USAID Development), named "Endesa 2007" and, adapted to Puerto Rico by the Dra.Marta Collazo to a sample of students between the 17 and 19 years of 2 state schools of San Lorenzo, as a pretest, and, selected by convenience. Then, a 10 hours training was administered to half of the students using the SETM to STD and condom use lessons. The other half of the students received additional lessons using the HBM. Finally, both groups took the questionnaire again as a posttest. The sample of students, in average, did not reach the knowledge and basic levels of attitudes towards the STD in the pretest. This reflected 2 possible implications on the SETM. In first place, that the way in which the STD is implemented as part of the Sexual Education curriculum is inefficient. Secondly, the possibility that the acquired information or attitudes does not have permanence. Culminated the questionnaire, the HBM increase the knowledge of the STD in 0.41 points (average) over the SETM. There was not a significant difference between both models, in attitudes, implying that both models are equally effective. The findings suggests that the HBM is more effective increasing the knowledge on the STD, but equally effective than the SETM in attitude change for the Puerto Rican youth.

  8. The HoMBReS and HoMBReS Por un Cambio Interventions to Reduce HIV Disparities Among Immigrant Hispanic/Latino Men.

    PubMed

    Rhodes, Scott D; Leichliter, Jami S; Sun, Christina J; Bloom, Fred R

    2016-02-12

    Hispanics/Latinos in the United States are affected disproportionately by human immunodeficiency virus (HIV) infection, acquired immunodeficiency syndrome (AIDS), and other sexually transmitted diseases (STDs); however, few effective evidence-based prevention interventions for this population exist. This report describes the Hombres Manteniendo Bienestar y Relaciones Saludables (Men Maintaining Wellbeing and Healthy Relationships) (HoMBReS) intervention, which was developed by a community-based, participatory research partnership in North Carolina and initially implemented during 2005-2009. HoMBReS is an example of an effective intervention that uses lay health advisors (known as Navegantes [navigators]) in the context of existing social networks (i.e., recreational soccer teams) to promote consistent condom use and HIV and STD testing among Hispanic/Latino men. In 2012, HoMBReS was classified as a best-evidence community-level HIV prevention intervention (CDC. Compendium of evidence-based behavioral interventions and best practices for HIV prevention. Atlanta, GA: US Department of Health and Human Services, CDC; 2015). The intervention has been implemented elsewhere, enhanced, and further evaluated in longitudinal intervention and implementation studies. HoMBReS has been adapted for other populations, including men who have sex with men and transgender persons. Additional evaluation has found that Navegantes continue in their roles as health advisors, opinion leaders, and community advocates after study support ends. Hispanic/Latino men's social networks can be leveraged to promote sexual health within the community by decreasing HIV risk behaviors among Hispanics/Latinos in the United States. PMID:26916740

  9. Un gran proyecto en crisis: el estudio coordinado de la norma linguistica culta de las principales ciudades de Iberoamerica y de la peninsula Iberica (A Great Project in Crisis: the Coordinated Study of the Educated Linguistic Norm of the Principal Cities of Latin America and of the Iberian Peninsula)

    ERIC Educational Resources Information Center

    Criado de Val, Manuel

    1975-01-01

    The controversy holding back the project is what approach should be used in data collecting, controlled interviews or spontaneous recordings. The author favors the latter. To be scientific, the analysis of the data should be psycholinguistic rather than stylistic. (Text is in Spanish.) (TL)

  10. [Not Available].

    PubMed

    Perales-García, Aránzazu; Estévez-Martínez, Isabel; Urrialde, Rafael

    2016-07-12

    Introducción: la hidratación se define como el aporte de agua proveniente de alimentos y bebidas. Su estudio constituye desde hace unos años un área en sí misma dentro de la nutrición, que ha supuesto que en 2010 la European Food Safety Authority (EFSA) aprobara las recomendaciones de ingesta de agua; pero el estudio del estado de hidratación implica un elevado nivel metodológico que presenta ciertos desafíos. Objetivo: ofrecer una visión general de los principales problemas metodológicos en estudios sobre el estado de hidratación. Material y métodos: revisión de la bibliografía científica existente. Resultados: los principales problemas metodológicos presentes son: selección de la muestra (ámbito de investigación y diseño muestral), selección del método de evaluación del estado de hidratación (técnicas de dilución, impedancia bioeléctrica, indicadores plasmáticos y urinarios, cambios en la composición corporal, pérdidas de agua y síntomas clínicos), selección del método de valoración de la ingesta de agua (biomarcadores, cuestionarios, programas informáticos, uso de smartphones, registro 24 h, historia dietética y frecuencia de consumo de alimentos), así como sus principales fuentes dietéticas. Conclusiones: el estado de hidratación debe ser entendido como un modelo rutinario, de frecuencia diaria y variable en función de la edad, sexo, actividad física y condiciones ambientales; por todo ello es de especial importancia un correcto diseño metodológico capaz de recoger estos matices.

  11. [Not Available].

    PubMed

    Perales-García, Aránzazu; Estévez-Martínez, Isabel; Urrialde, Rafael

    2016-01-01

    Introducción: la hidratación se define como el aporte de agua proveniente de alimentos y bebidas. Su estudio constituye desde hace unos años un área en sí misma dentro de la nutrición, que ha supuesto que en 2010 la European Food Safety Authority (EFSA) aprobara las recomendaciones de ingesta de agua; pero el estudio del estado de hidratación implica un elevado nivel metodológico que presenta ciertos desafíos. Objetivo: ofrecer una visión general de los principales problemas metodológicos en estudios sobre el estado de hidratación. Material y métodos: revisión de la bibliografía científica existente. Resultados: los principales problemas metodológicos presentes son: selección de la muestra (ámbito de investigación y diseño muestral), selección del método de evaluación del estado de hidratación (técnicas de dilución, impedancia bioeléctrica, indicadores plasmáticos y urinarios, cambios en la composición corporal, pérdidas de agua y síntomas clínicos), selección del método de valoración de la ingesta de agua (biomarcadores, cuestionarios, programas informáticos, uso de smartphones, registro 24 h, historia dietética y frecuencia de consumo de alimentos), así como sus principales fuentes dietéticas. Conclusiones: el estado de hidratación debe ser entendido como un modelo rutinario, de frecuencia diaria y variable en función de la edad, sexo, actividad física y condiciones ambientales; por todo ello es de especial importancia un correcto diseño metodológico capaz de recoger estos matices. PMID:27571857

  12. [Growth secular trend during early childhood in Northern Spain].

    PubMed

    Oves Suárez, Beatriz; Samper Villagrasa, M Pilar; Escartín Madurga, Laura; Álvarez Sauras, M Luisa; Moreno Aznar, Luis A; Labayen Goñi, Idoia; Rodríguez Martínez, Gerardo

    2013-11-01

    Objetivo: Comprobar si existen cambios seculares en el patrón de crecimiento de los niños caucásicos en el norte de España hasta los 2 años de edad, en comparación con los estándares poblacionales disponibles de hace 25-30 años. Material y métodos: Estudio longitudinal de una cohorte representativa de la población de niños aragoneses caucásicos nacidos a término (n=1.099). Se han calculado las puntuaciones típicas (Pt) para el peso, longitud e índice de masa corporal (IMC) según dos estándares disponibles de hace 25-30 años (Sobradillo et al. y Ferrández et al.). Resultados: Las Pt medias de peso, longitud e IMC de la muestra varían significativamente según el estándar empleado en todas las edades estudiadas (p≤0,001). Al nacimiento, la Pt media para el peso es -0,36(IC95%:-0,42;-0,30) respecto a los estándares de Sobradillo et al. y -0,26 (IC95%:-0,29;0,33) respecto a los de Ferrández et al. Estas diferencias se atenúan paulatinamente haciéndose mínimas a los 2 años (Pt media para el peso -0,08 y -0,05; respectivamente). A los 2 años de edad, la Pt media para la longitud es +0,54(IC95%:0,48;0,61) respecto a Sobradillo et al. y +0,19(IC95%:0,12;0,25) respecto a Ferrández et al. El IMC de nuestra muestra presenta valores inferiores respecto a los estándares seleccionados. Conclusión: El peso al nacer de los niños caucásicos del norte de España en la actualidad es menor que en la generación anterior. A los 2 años de edad se comprueba una aceleración secular de la longitud pero con un peso similar, lo que conlleva valores inferiores de IMC.

  13. Understanding Changes in Water Availability in the Rio Grande/Rio Bravo del Norte Basin Under the Influence of Large-Scale Circulation Indices Using the Noah Land Surface Model

    NASA Technical Reports Server (NTRS)

    Khedun, C. Prakash; Mishra, Ashok K.; Bolten, John D.; Beaudoing, Hiroko K.; Kaiser, Ronald A.; Giardino, J. Richard; Singh, Vijay P.

    2012-01-01

    Water availability plays an important role in the socio-economic development of a region. It is however, subject to the influence of large-scale circulation indices, resulting in periodic excesses and deficits. An assessment of the degree of correlation between climate indices and water availability, and the quantification of changes with respect to major climate events is important for long-term water resources planning and management, especially in transboundary basins as it can help in conflict avoidance. In this study we first establish the correlation of the Pacific Decadal Oscillation (PDO) and El Nino-Southern Oscillation (ENSO) with gauged precipitation in the Rio Grande basin, and quantify the changes in water availability using runoff generated from the Noah land surface model. Both spatial and temporal variations are noted, with winter and spring being most influenced by conditions in the Pacific Ocean. Negative correlation is observed at the headwaters and positive correlation across the rest of the basin. The influence of individual ENSO events, classified using four different criteria, is also examined. El Ninos (La Ninas) generally cause an increase (decrease) in runoff, but the pattern is not consistent; percentage change in water availability varies across events. Further, positive PDO enhances the effect of El Nino and dampens that of La Nina, but during neutral/transitioning PDO, La Nina dominates meteorological conditions. Long El Ninos have more influence on water availability than short duration high intensity events. We also note that the percentage increase during El Ninos significantly offsets the drought-causing effect of La Ninas.

  14. Mesohabitats, fish assemblage composition, and mesohabitat use of the Rio Grande silvery minnow over a range of seasonal flow regimes in the Rio Grande/Rio Bravo del Norte, in and near Big Bend National Park, Texas, 2010-11

    USGS Publications Warehouse

    Moring, J. Bruce; Braun, Christopher L.; Pearson, Daniel K.

    2014-01-01

    There were no statistically significant differences between the stream velocities associated with seine hauls of the Rio Grande silvery minnow and Tamaulipas shiner. Stream velocities associated with the seine hauls that included Rio Grande silvery minnow indicate that this species is predominantly found in low-velocity mesohabitats. Velocities associated with seine hauls that included the Tamaulipas shiner represented a much broader overall range of velocities than those associated with Rio Grande silvery minnow collections. No statistically significant differences were found between the depths for seine hauls that included Rio Grande silvery minnow or Tamaulipas shiner. The Rio Grande silvery minnow was more commonly collected in seine hauls from mesohabitats dominated by cobble substrates and less frequently collected in mesohabitats with substrates dominated by fine-sized silt and clay particles, gravels, and sands, in that order. In contrast, the Tamaulipas shiner was broadly distributed among mesohabitats characterized as having gravel, cobble, and silt and clay.

  15. Mesohabitats, fish assemblage composition, and mesohabitat use of the Rio Grande silvery minnow over a range of seasonal flow regimes in the Rio Grande/Rio Bravo del Norte, in and near Big Bend National Park, Texas, 2010-11

    USGS Publications Warehouse

    Moring, J. Bruce; Braun, Christopher L.; Pearson, Daniel K.

    2014-01-01

    The total number and number of types of mesohabitats were larger during low flows compared to intermediate flows, and larger during intermediate flows compared to high flows. Decreases in streamflow typically led to increases in channel complexity in terms of the number of different types and total number of mesohabitats present. The total wetted area increased and the number of mesohabitat types generally decreased as streamflow increased. At all four sites, the smallest depths and velocities were generally measured during low flow and the largest depths and velocities at high flow. Specific conductance was relatively consistent between the Contrabando and Santa Elena sites, the two most upstream sites. Specific conductance decreased appreciably between the Santa Elena site and the Rio Grande Village, and decreased slightly between the Rio Grande Village site and the Stillwell Crossing site. Specific-conductance values within and among mesohabitat types at a given site were relatively consistent. The pH values measured within and among mesohabitat types also were relatively consistent at all four sites. Median dissolved oxygen concentrations were relatively consistent between the Contrabando and Santa Elena sites (8.34 and 8.54 milligrams per liter [mg/L], respectively) but decreased along the stretch of river between the Santa Elena and Rio Grande Village sites to 7.31 mg/L, possibly because of small dissolved oxygen concentrations associated with contributions from springs between the Santa Elena and Rio Grande Village sites. Dissolved oxygen concentrations increased substantially between the Rio Grande Village and Stillwell Crossing sites to 10.06 mg/L. Mesohabitat water temperatures were generally highest in mesohabitats co

  16. [Validity of the 24-h previous day physical activity recall (PDPAR-24) in Spanish adolescents].

    PubMed

    Cancela, José María; Lago, Joaquín; Ouviña, Lara; Ayán, Carlos

    2015-04-01

    Introducción: El control del nivel de práctica de actividad física que realizan los adolescentes, de sus factores determinantes y susceptibilidad al cambio resulta indispensable para intervenir sobre la epidemia de obesidad que afecta a la sociedad española. Sin embargo, el número de cuestionarios validados para valorar la actividad física en adolescentes españoles es escaso. Objetivos: Evaluar la validez del cuestionario24hPrevious Day Physical Activity Recall (PDPAR-24) cuando es aplicado a la población de adolescentes españoles. Método: Participaron en este estudio estudiantes de 14-15 años de dos centros de educación secundaria del norte de Galicia. Como criterio objetivo de la actividad física realizada se utilizó el registro proporcionado por el acelerómetro Actigraph GT3X.Se monitorizó a los sujetos durante un día por medio del acelerómetro y al día siguiente se administró el cuestionario de auto-informe. Resultados: Un total de 79 alumnos (15.16 ± 0.81 años, 39% mujeres) finalizaron el estudio. Se observan correlaciones positivas estadísticamente significativas de tamaño medio a grande en ambos sexos (r=0.50-0.98), para la actividad física ligera y moderada. Las correlaciones observadas son más elevadas a medida que aumenta la intensidad de la actividad física realizada. Conclusiones: El cuestionario de auto-informe PDPAR-24 puede ser considerado como una herramienta válida a la hora de valorar el nivel de actividad física en adolescentes españoles.

  17. Una Nueva IDEA: Una Guia para Padres acerca de los Cambios en la Ley de Educacion Especial para Ninos con Incapacidades (A New IDEA: A Parent's Guide to the Changes in Social Education Law for Children with Disabilities).

    ERIC Educational Resources Information Center

    Seltzer, Tammy

    This guide for parents, in Spanish, explains the changes in the federal special education law resulting from the 1997 amendments to the Individuals with Disabilities Education Act (IDEA). Changes related to the parent's role in decisions about the child's education and in how schools can discipline special education students are highlighted. A…

  18. Metric System Resource Units = Unidades de Trabajo del Sistema Metrico Decimal. K-12. Project C.A.M.B.I.O., Changing Attitudes towards Metrics for Bilingual Instruction & Operations.

    ERIC Educational Resources Information Center

    Pulido, Josefina; Almendares, Simon

    Four resource units are included in this document. For each, general objectives on knowledge and concepts, skills, and attitudes are given; content is outlined; and some suggestions for initiating the unit are listed. The first unit, on measuring length, provides six lesson plans, to teach about the meter, the smaller units of the meter, units…

  19. La influencia de "los de abajo" en tres procesos de cambio linguistico en el espanol de Morelia, Michoacan (The Influence of "the Underclass" on Three Processes of Linguistic Change in the Spanish of Morelia, Michoacan).

    ERIC Educational Resources Information Center

    Gutierrez, Manuel J.

    1994-01-01

    Examines the role of the educational and socioeconomic levels of the speakers in advancing linguistic change. The study reviews three grammatical phenomena found at distinct stages of change. Individuals at the lower socioeconomic and educational strata of society embrace innovations in language more readily than their affluent and educated…

  20. Moral Responsibility and Confidence as Factors That Influence Teacher Involvement in Educational Change (Responsabilidad moral y confianza como factores que influyen en la participación del profesor en el cambio educativo)

    ERIC Educational Resources Information Center

    López, Cecilio

    2010-01-01

    Various factors that are not easily observed have a strong impact on educational change. In this paper, I examine some of the issues that emerged from the data collected while exploring my informants' perceptions and attitudes towards their changing roles when confronted with curriculum innovation. This research demonstrates that the…

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

    ERIC Educational Resources Information Center

    Hoskins, Irene, Ed.

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

  2. La Naturaleza del Estado Cubano y el Llamado a La Inversion Extranjera: Crisis o Invitacion al Cambio (The Nature of the Cuban State and the Call for Foreign Investment: Crisis or Invitation to Change).

    ERIC Educational Resources Information Center

    Campbell, Luis E. Hartly

    1995-01-01

    Presents a study of the period of crisis in modern Cuba dating back to 1991. An overview of the Cuban character is given in order to promote understanding of the environment that has permitted the present socialist government to remain in power since 1959. It is concluded that Cuba requires massive foreign investment in every sector for its…

  3. 77 FR 2606 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-18

    ... Emergency Economic Powers Act (50 U.S.C. 1701-1706) (``IEEPA''), issued Executive Order 12978 (60 FR 54579... OVERSEAS INC., Panama City, Panama; c/o FINANZAS DEL NORTE LUIS SAIEH Y CIA. S.C.A., Barranquilla, Colombia... (Panama) 10. FINANZAS DEL NORTE LUIS SAIEH Y CIA. S.C.A. (f.k.a. FINANZAS DEL NORTE LTDA.), Calle 77 B...

  4. Mixed dietary pattern is associated with a slower decline of body weight change during postpartum in a cohort of Brazilian women.

    PubMed

    de Castro, Maria Beatriz Trindade; Sichieri, Rosely; Barbosa Brito, Flávia dos Santos; Nascimento, Sileia; Kac, Gilberto

    2014-03-01

    Objetivo: El propósito de este estudio fue evaluar el efecto del patrón dietético sobre el cambio de peso corporal (CPC) en el puerperio. Métodos: Se aplicó una Cuestionario de frecuencia de alimentos (CFA) con 81 ítemes a 278 mujeres en el marco temporal de los siguientes 6 meses después del parto. El peso corporal (PC) se midió a los 15 días (basal) y a los 2,6 y 9 meses posparto. Se utilizó el análisis de los componentes principales para extraer los patrones dietéticos. Se realizaron modelos lineares mixtos, siendo el CPC el resultado y los patrones dietéticos las variables independientes. Resultados: Se identificaron dos patrones dietéticos principales: saludable y mixto. El consumo de energía fue de 2.838 kcal (DP = 624) y 2.233 kcal (DP = 455), para las mujeres clasificadas en los cuartiles más altos de los patrones dietéticos mixto y saludable, respectivamente. El decremento promedio del CPC fue de -0,151 kg/mes (EE = 0,02) independientemente del patrón dietético. Los valores predictivos del CPC en las mujeres con un patrón dietético mixto indicaron un menor CPC de 0,830 kg/mes (EE = 0,24; p < 0,001) a los 6 meses y de 0,938 kg/mes (EE = 0,24; p < 0,001) a los 9 meses posparto. Conclusión: El patrón dietético mixto se asoció con un ritmo de pérdida de peso más lento durante el puerperio en comparación con el patrón dietético saludable.

  5. EVOLUTION OF THE INTAKE AND NUTRITIONAL RECOMMENDATIONS OF CALCIUM AND VITAMIN D FOR THE LAST 14 YEARS IN SPAIN.

    PubMed

    Collado Yurrita, Luis; Grande Oyarzábal, Graciela; Garicano-Vilar, Elena; Ciudad Cabañas, María José; San Mauro Martín, Ismael

    2015-11-01

    Introducción: el calcio y la vitamina D son esenciales para el ser humano. La evidencia científica apoya la correlación entre ambos nutrientes y sus procesos esenciales en el correcto funcionamiento del organismo del ser humano, que es lo que justifica el aumento de la ingesta recomendada en España, desde 2001 hasta hoy en día. Objetivos: analizar la evolución en la ingesta del calcio y la vitamina D en relación con la evolución de las Ingestas Diarios Recomendadas, así como su repercusión, desde 2001 hasta hoy en día. Diseño: revisión bibliográfica en las principales bases de datos científicas, PubMed, SciELO y EMBASE. Se realizó una revisión centrada en la literatura científica sobre la vitamina D y el calcio, la evolución de su ingesta, cambios en las recomendaciones nutricionales y la importancia y las consecuencias de estos aspectos. Resultados: la ingestión real de calcio y vitamina D, durante este período de tiempo, ha disminuido en España, alcanzando valores medios de consumo por debajo recomendado. Conclusión: es posible que sea necesario aumentar el consumo de suplementos y alimentos fortificados, en algunos casos específicos, a fin de lograr la Ingesta Diaria Recomendada.

  6. [Effect of gastric bypass on the cardiovascular risk and quality of life in morbid obese patients].

    PubMed

    Mateo Gavira, I; Vílchez López, F J; Cayón Blanco, M; García Valero, A; Escobar Jiménez, L; Mayo Ossorio, M A; Pacheco García, J M; Vázquez Gallego, J M; Aguilar Diosdado, M

    2014-03-01

    Objetivos: Determinar la prevalencia de las principales comorbilidades asociadas a la obesidad mórbida y evaluar el efecto del bypass gástrico sobre el estado ponderal, riesgo cardiovascular y calidad de vida en estos pacientes. Métodos: Estudio descriptivo con medidas del cambio intrasujeto (antes-después) en una muestra de 162 pacientes de los resultados del bypass gástrico sobre la evolución ponderal, comorbilidades asociadas, riesgo cardiovascular a 10 años (estimado mediante las tablas de Framingham) y calidad de vida mediante el test BAROS (Bariatric Analysis and Reporting Outcome System). Resultados: El índice de masa corporal (IMC) se reduce de 51,12 ± 7,22 kg/m2 a 29,94 ± 4,86 kg/m2 (72,85% de sobrepeso perdido) y se resuelven la hipertensión arterial (HTA), la dislipemia y la diabetes mellitus tipo 2 (DMT2) en el 71,93%, 91,38% y 82,93% respectivamente (p < 0,001). El riesgo cardiovascular mayor del 10% se reduce del 25,91% al 4,32% (p < 0,001). Según la escala BAROS, el resultado de la cirugía fue favorable en el 95% de los casos. Conclusiones: La cirugía bariátrica mediante bypass gástrico demuestra ser muy efectiva para la reducción ponderal y comorbilidades asociadas, mejorando notablemente la calidad de vida.

  7. 60. C.J.T., photographer December 23, 1955 KLAMATH RIVER BRIDGE, DEL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    60. C.J.T., photographer December 23, 1955 KLAMATH RIVER BRIDGE, DEL NORTE COUNTY, SECTION A, HIGHWAY 1. DN-1-A #538, KLAMATH RIVER BR. FROM SO. END, 12/23/55, C.J.T. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  8. 64. F.W.H., photographer May 21, 1930 VIEW OF ROAD ALONG ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    64. F.W.H., photographer May 21, 1930 VIEW OF ROAD ALONG COASTLINE, DEL NORTE COUNTY, SECTION B, HIGHWAY 1. 1-DN 1B #54, F.W.H., 5-21-30. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  9. Los manuales de quimica en Espana (1788--1845): Protagonistas, terminologia, clasificaciones y orden pedagogico

    NASA Astrophysics Data System (ADS)

    Munoz Bello, Maria Rosa

    La presente tesis doctoral es una investigacion sobre los manuales de quimica utilizados en Espana de 1788 a 1845. Este trabajo proporciona una perspectiva general de un tema relevante en las ultimas decadas en Historia de la Ciencia, el estudio de los libros de texto. De acuerdo con las ultimas investigaciones realizadas en este terreno, el acto pedagogico es considerado como un proceso creativo, como espacio de encuentro de actores e intereses muy diversos, matizando las ideas defendidas por Thomas S. Kuhn. Recordemos que segun Kuhn, los libros de texto ofrecen una vision consensuada y normalizada del estado de la ciencia de su epoca, por lo que sus autores eliminan deliberadamente toda controversia y presentan asi una imagen distorsionada de la actividad cientifica. En cambio, se ha mostrado, por ejemplo, que en la ensenanza participan no solamente profesores y alumnos sino tambien otros muchos actores y todos ellos no unicamente con intereses puramente pedagogicos sino tambien con diversos intereses politicos y economicos que pueden conocerse a traves del estudio de los manuales. En esta tesis se pretende analizar los manuales de quimica en Espana desde 1788 hasta 1845. Para poder llevar a cabo la investigacion ha sido necesario precisar el objeto de estudio (libro de texto de quimica) durante el periodo estudiado (1788-1845) ya que no es adecuado adoptar la imagen actual de una disciplina que sufrio sustanciales cambios durante la epoca estudiada. Esta investigacion se centra en un momento especialmente importante para la quimica y que algunos historiadores han llegado a considerar "revolucionario". Durante estos anos se produjo un cambio importante en las teorias quimicas sobre la combustion y el concepto de elemento, asi como una reforma terminologica que originaron la aparicion de importantes controversias. Ademas, debido a la relacion de la quimica con otras disciplinas como la historia natural o la fisica ha sido necesario restringir el objeto de estudio

  10. Los manuales de quimica en Espana (1788--1845): Protagonistas, terminologia, clasificaciones y orden pedagogico

    NASA Astrophysics Data System (ADS)

    Munoz Bello, Maria Rosa

    La presente tesis doctoral es una investigacion sobre los manuales de quimica utilizados en Espana de 1788 a 1845. Este trabajo proporciona una perspectiva general de un tema relevante en las ultimas decadas en Historia de la Ciencia, el estudio de los libros de texto. De acuerdo con las ultimas investigaciones realizadas en este terreno, el acto pedagogico es considerado como un proceso creativo, como espacio de encuentro de actores e intereses muy diversos, matizando las ideas defendidas por Thomas S. Kuhn. Recordemos que segun Kuhn, los libros de texto ofrecen una vision consensuada y normalizada del estado de la ciencia de su epoca, por lo que sus autores eliminan deliberadamente toda controversia y presentan asi una imagen distorsionada de la actividad cientifica. En cambio, se ha mostrado, por ejemplo, que en la ensenanza participan no solamente profesores y alumnos sino tambien otros muchos actores y todos ellos no unicamente con intereses puramente pedagogicos sino tambien con diversos intereses politicos y economicos que pueden conocerse a traves del estudio de los manuales. En esta tesis se pretende analizar los manuales de quimica en Espana desde 1788 hasta 1845. Para poder llevar a cabo la investigacion ha sido necesario precisar el objeto de estudio (libro de texto de quimica) durante el periodo estudiado (1788-1845) ya que no es adecuado adoptar la imagen actual de una disciplina que sufrio sustanciales cambios durante la epoca estudiada. Esta investigacion se centra en un momento especialmente importante para la quimica y que algunos historiadores han llegado a considerar "revolucionario". Durante estos anos se produjo un cambio importante en las teorias quimicas sobre la combustion y el concepto de elemento, asi como una reforma terminologica que originaron la aparicion de importantes controversias. Ademas, debido a la relacion de la quimica con otras disciplinas como la historia natural o la fisica ha sido necesario restringir el objeto de estudio

  11. 51. Photographer unknown 1930 HUMBOLDT COUNTY, SECTION A, HIGHWAY 1. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    51. Photographer unknown 1930 HUMBOLDT COUNTY, SECTION A, HIGHWAY 1. 1-HUM-1-A #101, MEASURING BETWEEN TREES, 1930. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  12. 44. Photographer unknown Date unknown MENDOCINO COUNTY, SECTION, HIGHWAY 1. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    44. Photographer unknown Date unknown MENDOCINO COUNTY, SECTION, HIGHWAY 1. 1-MEN-1-I #9, MOVING CAMP. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  13. 24. VIEW, LOOKING NORTH TO SOUTH, SHOWING COLLAPSED SECTION OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    24. VIEW, LOOKING NORTH TO SOUTH, SHOWING COLLAPSED SECTION OF BRIDGE AND THE BOSCH HOME ON THE RIGHT Winter 1931-32 - Rowdy Creek Bridge, Spanning Rowdy Creek at Fred Haight Drive, Smith River, Del Norte County, CA

  14. 5. APPROACH VIEW FROM CRESCENT CITY (SOUTH) END OF BRIDGE, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. APPROACH VIEW FROM CRESCENT CITY (SOUTH) END OF BRIDGE, LOOKING SOUTHEAST. Emergency bracing under collapsed cantilever tower visible inside trusses. - Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescent City, Del Norte County, CA

  15. 8. EEL RIVER SOUTH FORK BRIDGE, OLD HIGHWAY 101. NORTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. EEL RIVER SOUTH FORK BRIDGE, OLD HIGHWAY 101. NORTH OF LEGGETT, HUMBOLDT COUNTY, CALIFORNIA. LOOKING N. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  16. 9. EEL RIVER SOUTH FORK BRIDGE, OLD HIGHWAY 101. NORTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. EEL RIVER SOUTH FORK BRIDGE, OLD HIGHWAY 101. NORTH OF LEGGETT, HUMBOLDT COUNTY, CALIFORNIA. LOOKING W. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  17. 10. VIEW, LOOKING NORTHWEST, ALONG CENTERLINE FROM SOUTH CANTILEVER TOWER, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. VIEW, LOOKING NORTHWEST, ALONG CENTERLINE FROM SOUTH CANTILEVER TOWER, BACK TO SOUTH PORTAL. Note emergency bracing and crumpled vertical members. - Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescent City, Del Norte County, CA

  18. 77 FR 20690 - Environmental Impact Statement: Albuquerque, New Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-05

    ... TRANSPORTATION Federal Highway Administration Environmental Impact Statement: Albuquerque, New Mexico AGENCY... the Interstate 25 and Paseo del Norte Interchange in Albuquerque, New Mexico. FOR FURTHER INFORMATION CONTACT: Greg Heitmann, Environmental Specialist, Federal Highway Administration, New Mexico...

  19. 12. VIEW, LOOKING NORTHWEST, ALONG CENTERLINE FROM NORTH CANTILEVER TOWER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. VIEW, LOOKING NORTHWEST, ALONG CENTERLINE FROM NORTH CANTILEVER TOWER TOWARD SOUTH PORTAL. As with previous photo, note vertical displacement in deck. - Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescent City, Del Norte County, CA

  20. 12. WORLD'S FAMOUS TREE HOUSE AND ROAD VIEW. SOUTH OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. WORLD'S FAMOUS TREE HOUSE AND ROAD VIEW. SOUTH OF PIERCY, HUMBOLDT COUNTY, CALIFORNIA. LOOKING SW. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  1. 48. Photographer unknown February 1925 MENDOCINO COUNTY, SECTION K, HIGHWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    48. Photographer unknown February 1925 MENDOCINO COUNTY, SECTION K, HIGHWAY 1. 1-MEN-1-K #39, LOG GUARD RAIL, 2-25. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  2. 71. MYRTLE CREED BRIDGE, OREGON STATE HIGHWAY 199, AT END ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    71. MYRTLE CREED BRIDGE, OREGON STATE HIGHWAY 199, AT END OF STOUT GROVE ROAD. JOSEPHINE COUNTY, OREGON. LOOKING WNW. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  3. 36. MYRTLE CREEK BRIDGE, OREGON STATE HIGHWAY 199, AT END ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    36. MYRTLE CREEK BRIDGE, OREGON STATE HIGHWAY 199, AT END OF STOUT GROVE ROAD. JOSEPHINE COUNTY, OREGON LOOKING WNW. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  4. 5. TUNNEL TREE AT DRIVETHROUGHTREE PARK. LEGGETT, HUMBOLDT COUNTY, CALIFORNIA. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. TUNNEL TREE AT DRIVE-THROUGH-TREE PARK. LEGGETT, HUMBOLDT COUNTY, CALIFORNIA. LOOKING NE. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  5. Use of Web 2.0 tools by hospital pharmacists.

    PubMed

    Bonaga Serrano, B; Aldaz Francés, R; Garrigues Sebastiá, M R; Hernández San Salvador, M

    2014-04-01

    Objetivo: Las herramientas de la Web 2.0 están transformando los canales que los profesionales sanitarios emplean para comunicarse entre sí y con los pacientes por lo que esta situación obliga a un cambio de mentalidad para implementarlas. El objetivo de este estudio fue evaluar el grado de conocimiento y aplicación de las principales herramientas Web 2.0 por parte de farmacéuticos hospitalarios. Método: El estudio se llevó a cabo mediante una encuesta anómina dirigida a todos los miembros de la Sociedad Española de Farmacia Hospitalaria (SEFH) a través de la aplicación Google Drive®. Después de completarse los 3 meses del período de estudio, los datos recogidos se analizaron usando SPPS v15.0. Resultados: La tasa de respuesta fue del 7,3%, siendo el 70,5% mujeres y el 76,3 % especialistas. La mayoría de los que respondieron (54,2%) estaban en el rango de edad de 20 a 35 años. Pubmed fue el medio principal de acceder a los artículos publicados. El 65,2% de los farmacéuticos conocía el término “Web 2.0”. El 45,3% eran usuarios de Twitter, de los cuales un 58,9% principalmente para uso profesional. La mayoría creía que Twitter era una buena herramienta para interactuar entre los profesionales y los pacientes. El 78,7% no usaba un agregador, pero cuando lo hacían, Google Reader era el más habitual. Conclusión: Aunque las aplicaciones de la Web 2.0 están ganando popularidad, algunos profesionales sanitarios se resisten a utilizarlas. De hecho, más de la mitad de los farmacéuticos entrevistados manifestaba un nulo conocimiento de las herramientas de la Web 2.0. Sería positivo que los farmacéuticos las usasen adecuadamente durante su práctica profesional para sacarles el máximo partido.

  6. Alternative options for prescribing physical activity among obese children and adolescents: brisk walking supported by an exergaming platform.

    PubMed

    Cebolla i Martí, Ausias; Álvarez-Pitti, Julio Carlos; Guixeres Provinciale, Jaime; Lisón, Juan Francisco; Baños Rivera, Rosa

    2014-09-12

    Introducción: La inactividad de los niños se ha identificado como un problema importante de salud pública. La generalización del sedentarismo está directamente relacionada con el aumento de la obesidad, por ello, el tratamiento de la obesidad infantil se basa en la intervención en estilos de vida siendo el aumento de actividad física uno de los objetivos principales. Los videojuegos activos podrían ser útiles para incrementar la actividad física, pero aún sería necesaria más investigación en este campo. Este estudio analiza los efectos de un videojuego activo que implica marcha rápida sobre el esfuerzo percibido, la auto-eficacia, las expectativas positivas y la satisfacción de un grupo de niños obesos y se compara con la respuesta de un grupo de niños normopeso. Se registraron también variables fisiológicas como la frecuencia cardiaca, el consumo de oxígeno y el gasto metabólico. Método: Una muestra de 42 niños fue estudiada. Los jóvenes fueron distribuidos de forma aleatoria en las dos opciones de ejercicio, marcha rápida en tapiz rodante con o sin el apoyo del videojuego activo (Wii-Fit). Resultados: Los niños obesos tuvieron puntuaciones significativamente más altas que los normopeso en las expectativas y la satisfacción que les producía la marcha rápida con apoyo del videojuego activo, pero en cambio no hubo diferencias significativas en cuanto a la auto-eficacia, el esfuerzo percibido o en las variables fisiológicas. Conclusiones: Estos resultados sugieren que esta plataforma de videojuego activo podría ser una herramienta útil para facilitar la práctica de la marcha rápida en niños obesos, como parte de una intervención para tratar la obesidad.

  7. [Quality healthcare and pharmaceutical care practice indicators to HIV+ patient].

    PubMed

    Martín Conde, Ma T; Monte Boquet, E; Morillo Verdugo, R

    2013-01-01

    farmacoterapia, falta de cultura de calidad y dificultades de acceso a la información. Entre los principales riesgos clínicos identificados destacaron: errores en las pautas con los cambios de tratamientos, falta de información de toda la medicación del paciente, falta de recursos asistenciales y de tiempo adecuado para realizar los procesos, falta de comunicación entre profesionales, desconocimiento de interacciones o eventos adversos Los principales resultados que se extrajeron del análisis de situación fueron que la línea prioritaria de actuación debía pasar por un enlace entre pacientes, especialistas y atención primaria. Igualmente se debería potenciar la gestión clínica de las unidades de VIH, el acceso a la información por todos los profesionales que realizan seguimiento farmacoterapeutico a estos pacientes y la mayor implicación por parte de estos. Por ultimo, se definieron 29 indicadores de calidad en la AF al paciente VIH distribuidos en estructura, procesos y resultados y el plan de mejora para la atención al paciente VIH y su nivel de prioridad considerado. Discusión: Con este documento se da respuesta a la creciente demanda por homogeneizar la labor asistencial y establecer criterios de calidad comunes que redunden un beneficio para el sistema sanitario y, en consecuencia, para los profesionales y los pacientes.

  8. Recharge areas and hydrochemistry of carbonate springs issuing from Semmering Massif, Austria, based on long-term oxygen-18 and hydrochemical data evidence

    NASA Astrophysics Data System (ADS)

    Yehdegho, Beyene; Reichl, Peter

    2002-10-01

    Résumé. Les teneurs en oxygène-18 et l'hydrochimie des sources émergeant du massif de Semmering ont été suivies de manière intensive dans le but de caractériser les zones de recharge et l'évolution hydrochimique. L'effet d'altitude sur le δ18O a été déterminé grâce aux données isotopiques et hydrogéologiques de petites sources de référence, principalement en terrains cristallins; cet effet est d'environ -0,27 et -0,21‰ par 100 m pour les versants respectivement nord et sud du massif. En appliquant ces valeurs, l'altitude moyenne de recharge des sources a été calculée. Pour les sources à fort débit issues des carbonates, elle est comprise entre 1,100 et 1,400 m, compatible avec le cadre topographique et hydrogéologique des calcaires et des dolomies de l'Austro-alpin inférieur alimentant ces sources. La composition chimique des sources des carbonates est dominée par les ions Ca2+, Mg2+, HCO3- et SO42-. Les sources sont presque toutes proches de la saturation par rapport à la calcite, mais sont sous-saturées en dolomite (sauf quelques sources proches de la saturation). Comme cela est habituel en ce qui concerne le dioxyde de carbone fourni par les sols en régions montagneuses, la pCO2 équilibrante moyenne est faible, comprise entre 10-3.0 et 10-2.5 atm (0,1 à 0,3% en volume). En ce qui concerne les variations à long terme, le pH, SIc, Sid et la pCO2 équilibrante sont soumis à des variations saisonnières, alors que les concentrations en Ca2+, Mg2+ et HCO3- ne varient pratiquement pas. En intégrant les résultats de δ18O et les données hydrochimiques, la variabilité altitudinale du chimisme des eaux souterraines des carbonates est démontrée. Reflétant les variations d'activité biologique et des conditions de recharge dans les zones d'alimentation, une covariation négative résulte de l'altitude de recharge et de la pCO2 et la concentration en HCO3- n'est pas modifiée par aucun des termes source ou puits, ce qui fait varier

  9. The ants of North and Central America: the genus Mycocepurus (Hymenoptera: Formicidae)

    PubMed Central

    Mackay, William P.; Maes, Jean-Michel; Fernández, Patricia Rojas; Luna, Gladys

    2004-01-01

    Abstract We provide a review of the North American ants (north of Colombia) of the ant genus Mycocepurus, including keys to the workers and females, illustrations and distribution maps. The distribution of M. tardus is extended to Nicaragua and Costa Rica. The female of M. curvispinosus is described. Resumen Se revisan las especies del género Mycocepurus de Norte América (al norte de Colombia). Se incluyen claves para la identificación de las obreras y las hembras, ilustraciones y mapas de distribución. Se amplia hacia el norte la distribución de M. tardus, incluyendo ahora Nicaragua y Costa Rica y se describe la hembra de M. curvispinosus. PMID:15861242

  10. Hydrochemical tracers in the middle Rio Grande Basin, USA: 1. Conceptualization of groundwater flow

    NASA Astrophysics Data System (ADS)

    Plummer, L. Niel; Bexfield, Laura M.; Anderholm, Scott K.; Sanford, Ward E.; Busenberg, Eurybiades

    Chemical and isotopic data for groundwater from throughout the Middle Rio Grande Basin, central New Mexico, USA, were used to identify and map groundwater flow from 12 sources of water to the basin, evaluate radiocarbon ages, and refine the conceptual model of the Santa Fe Group aquifer system. Hydrochemical zones, representing groundwater flow over thousands to tens of thousands of years, can be traced over large distances through the primarily siliciclastic aquifer system. The locations of the hydrochemical zones mostly reflect the ``modern'' predevelopment hydraulic-head distribution, but are inconsistent with a trough in predevelopment water levels in the west-central part of the basin, indicating that this trough is a transient rather than a long-term feature of the aquifer system. Radiocarbon ages adjusted for geochemical reactions, mixing, and evapotranspiration/dilution processes in the aquifer system were nearly identical to the unadjusted radiocarbon ages, and ranged from modern to more than 30 ka. Age gradients from piezometer nests ranged from 0.1 to 2 year cm-1 and indicate a recharge rate of about 3 cm year-1 for recharge along the eastern mountain front and infiltration from the Rio Grande near Albuquerque. There has been appreciably less recharge along the eastern mountain front north and south of Albuquerque. Des données sur les éléments chimiques et les isotopes présents dans l'eau souterraine prélevée à divers endroits dans le bassin moyen du Rio Grande, au centre du Nouveau-Mexique (É-U), ont permis de déterminer l'existence et l'étendue de douze sources d'eau régionales dans le bassin, d'évaluer les âges radiocarbones et de raffiner le modèle conceptuel du système aquifère du groupe de Santa Fe. Des zones hydro-chimiques qui représentent l'écoulement de l'eau souterraine depuis des dizaines de milliers d'années peuvent être suivies sur de longues distances à travers l'aquifère principalement siliclastique. La position des

  11. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest)--ghost and blue mud shrimp

    USGS Publications Warehouse

    Hornig, S.; Sterling, A.; Smith, S.

    1989-01-01

    Geographic range: The ghost shrimp is found in intertidal areas along the west coast of North America from Mutiny Bay, Alaska, to the mouth of the Tijuana River, San Diego County, California; MacGinitie (1934) and Ricketts and Calvin (1968) reported finding specimens as far south as El Estuario de Punto Banda, Baja California Norte, Mexico. The blue mud shrimp is found from southeastern Alaska to San Quentin Bay (Bahia de San Quentin) in Baja California Norte. The general distribution of the two species in the Pacific Northwest is identical (Figure 3).

  12. Geology, exploration status of Uruguay's sedimentary basins

    SciTech Connect

    Goso, C.; Santa Ana, H. de )

    1994-02-07

    This article attempts to present the geological characteristics and tectonic and sedimentary evolution of Uruguayan basins and the extent to which they have been explored. Uruguay is on the Atlantic coast of South America. The country covers about 318,000 sq km, including offshore and onshore territories corresponding to more than 65% of the various sedimentary basins. Four basins underlie the country: the Norte basin, the Santa Lucia basin, the offshore Punta del Este basin, and the offshore-onshore Pelotas-Merin basin. The Norte basin is a Paleozoic basin while the others are Mesozoic basins. Each basin has been explored to a different extent, as this paper explains.

  13. Une angiocholite secondaire à un thrombus tumoral d'une tumeur neuroendocrine primitive du foie

    PubMed Central

    Baba, Hicham; Allaoui, Mohamed; Elfahssi, Mohammed; Bounaim, Ahmed; Ali, Abdelmounaim Ait; Oukabli, Mohamed; Sair, Khalid; Zentar, Aziz

    2015-01-01

    Nous rapportons le cas exceptionnel d'une patiente de 54 ans prise en charge pour une angiocholite due à un thrombus tumoral, d'une tumeur neuroendocrine primitive (TNE Ive) du foie, dans la voie biliaire principale. PMID:26966504

  14. [Physical activity programmes to reduce overweight and obesity in children and adolescents; a systematic review].

    PubMed

    Aguilar Cordero, M J; Ortegón Piñero, A; Mur Vilar, N; Sánchez García, J C; García Verazaluce, J J; García García, I; Sánchez López, A M

    2014-10-01

    Introducción: El tratamiento contra la obesidad ha sido muy discutido y varios autores abogan por un tratamiento integral de la obesidad. Todos los referentes conducen a plantear ¿cuál es el programa de actividad física más efectivo para reducir el sobrepeso y la obesidad de niños y adolescentes? Objetivo: Analizar los principales estudios sobre la eficacia de la actividad física para reducir el sobrepeso y la obesidad de niños y adolescentes. Método: Revisión sistemática de los resultados de programas de actividad física para reducir el sobrepeso y la obesidad publicados en artículos científicos. Se identificaron 85 artículos a través de la búsqueda automatizada en las bases de datos PUBMED y Google Scholar; se llevó a cabo entre los meses de octubre de 2013 y marzo de 2014. Para seleccionar los artículos fue preciso considerar la utilidad y la relevancia del tema estudiado y la credibilidad o experiencia de los autores en la temática. Se tuvo en cuenta la validez interna y externa de cada uno de los artículos revisados. Conclusiones: Se identificó la efectividad de la actividad física para reducir el sobrepeso y la obesidad de niños y adolescentes. El programa de actividad física más efectivo es el que combina ejercicios aeróbicos y anaeróbicos. Existe consenso en acumular más de 180 minutos a la semana dedicados a estos fines, con 3 sesiones de 60 minutos cada una de ejercicio físico a la semana. De una intensidad moderada, podrían ser suficientes para ejecutar un programa de ejercicio físico para esas personas con sobrepeso y obesidad. Coinciden los autores en que, cuando se combina una dieta controlada por una adecuada distribución de las comidas y con la práctica de actividad física, se potencian mutuamente, con lo que se obtie nen los mejores resultados. Los programas de reducción de peso que tengan en cuenta la participación familiar son más eficaces que la propia educación alimentaria y otras intervenciones de rutina

  15. Perceptions about HIV pre-exposure prophylaxis among healthcare professionals in Spain (PERPPRES Study).

    PubMed

    Sánchez-Rubio Ferrández, Javier; Martínez Sesmero, José Manuel; Navarro Aznárez, Herminia; Fernández Espínola, Sergio; Escobar Rodríguez, Ismael; Ventura Cerdá, José Manuel

    2016-07-01

    Objetivo: Determinar el grado de apoyo, conocimientos y percepciones respecto a la profilaxis preexposición (PrEP) de los médicos infectólogos y farmacéuticos hospitalarios en España. Métodos: Estudio transversal mediante encuesta de 31 ítems (datos sociodemográficos, situación laboral/experiencia, conocimiento sobre PrEP, uso, opiniones, barreras detectadas y aspectos financieros). Se realizó un análisis univariante para evaluar las variables relacionadas con el apoyo a PrEP y comparar las valoraciones de médicos y farmacéuticos. Las preguntas sobre apoyo a la PrEP y el acuerdo sobre aprobar la indicación se repitieron tras mostrar datos de estudios publicados. Se analizó la significación del cambio en la respuesta mediante la prueba de McNemar. Resultados: Se recibieron 211 cuestionarios (80,1% farmacéuticos). El 40,3% estuvieron nada/poco familiarizados con la PrEP (46,2% farmacéuticos vs. 16,7% médicos; p < 0,01). El 53,6% apoyaría su uso (49,7% farmacéuticos vs. 69% médicos; p = 0,038). La eficacia mínima considerada aceptable fue 85,0 ± 15,5% (82,6 ± 12,1% médicos vs. 85,6 ± 15,0% farmacéuticos; p = 0,02). Las variables relacionadas con el apoyo fueron: profesión médica (OR = 2,26 IC95% 1,1-4,6; p = 0,038) y menor exigencia de eficacia (diferencia 10,5% IC95% 6,9-14,1; p < 0,001). Tras recibir la información, aumentaron el apoyo al uso y la aprobación. El 81,5% no apoyaron la financiación. Las principales barreras señaladas fueron: aumento de conductas de riesgo (24,1%), aumento de enfermedades de transmisión sexual (19,0%), resistencias (16,6%) y coste (16,0%). Conclusiones: Más de la mitad de los encuestados estaban familiarizados con la PrEP. La mayoría apoyaría su uso y la aprobación de la indicación, pero no la financiaría. El uso en la práctica real de la PrEP es escaso en la actualidad.

  16. [Nutritional content of foods offered and consumed in a Spanish university canteen].

    PubMed

    Fernández Torres, Ángela; Moreno-Rojas, Rafael; Cámara Martos, Fernando

    2014-09-12

    Objetivo: El primer objetivo de nuestro trabajo fue estudiar los hábitos alimentarios durante el almuerzo en la Universidad de Córdoba. En segundo término se trató de reducir el consumo energetico de colesterol y grasa en la dieta de dicho colectivo. Marco: El estudio se realiza entre los años 2010 al 2012 sobre la principal cantina en la que se sirve comida en esta Universidad, centrándonos en la toma de alimento del almuerzo, que es la principal toma alimentaria a lo largo del día, suponiendo entre el 35 y 40% del total de calorías ingeridas a lo largo del día. Muestras: Se han abordado un total de 9530 observaciones que corresponden cada una de ellas a la valoración nutricional de una toma de alimento (almuerzo completo) por estudiantes, profesorado y personal de servicios. Diseño: El estudio se desarrolló en 5 fases de intervención y una previa en la que no se intervino, esta última se utilizó para establecer las ingestas habituales alimentarias del colectivo. En cada fase se incremento la información nutricional suministrada a los usuarios de la cantina, para en la fase final, desarrollar también una modificación del precio de los menús servidos. Análisis: Las elecciones alimentarias que realizaban los universitarios de forma libre fueron transformadas en cantidad de nutrientes mediante la valoración nutricional previa de los platos, desarrollada por cálculo mediante la base de datos Nutriplato®. Esto permitió evaluar 29 nutrientes que a partir de los datos observados de los usuarios se transformaron en % de aporte a la RDA (de cada grupo de población) lo que produce una estandarización de los datos que permitió un estudio estadístico posterior, mediante el procedimiento GLM (SPSS v15) para evaluar el efecto de los diferentes factores contemplados. Principales medidas tomadas: Se tuvieron en cuenta como factores de clasificación (variables independientes): sexo, grupo de edad y nivel de grasa corporal, así como la fase de

  17. [Trends in food consumption of university students].

    PubMed

    De Piero, Alexia; Bassett, Natalia; Rossi, Analia; Sammán, Norma

    2015-04-01

    Los jóvenes universitarios necesitan consolidar buenos hábitos alimentarios basados en una adecuada selección de alimentos, los cuales constituyen un factor de fundamental importancia para mantener un buen estado de salud y prevenir enfermedades. Objetivo: Evaluar la ingesta de alimentos y el perfil de la dieta de estudiantes universitarios de Tucumán y su variación a través del tiempo. Analizar si cumplen las recomendaciones dietéticas actuales. Materiales y métodos: La recolección de datos se llevó a cabo durante los años 1998-1999 (G1) y 2012-2013 (G2); se realizó mediante una autoencuesta alimentaria y cuestionario de frecuencia de consumo de alimentos. Fue aplicada a 329 estudiantes universitarios seleccionados en forma aleatoria. El perfil alimentario se describió según la frecuencia de consumo habitual de los principales grupos de alimentos. Resultados: Los estudiantes resultaron 25,2% hombres y 74,8% mujeres, con edad promedio de 23±3 años. En general, en ambos grupos, la mayoría de los estudiantes presentó un IMC normal, sin embargo se destacó un elevado porcentaje de hombres con sobrepeso (18,2%) y obesidad (12,1%) y mujeres con bajo peso (11,6%). Según los grupos analizados y en función del sexo se observaron algunas diferencias estadísticamente significativas en la composición de macronutrientes de la dieta: en G1 fue mayor el consumo de carbohidratos en detrimento de proteínas y lípidos; se encontraron también diferencias en la ingesta de algunos micronutrientes, observándose mayor consumo de hierro y menor de vitaminas B1, B2, niacina y C en el G2. La dieta fue monótona para ambos grupos y con diferencias en el perfil de nutrientes que la conforman. La más notable fue el incremento gradual del consumo de productos azucarados, alimentos procesados, snacks y menor consumo de lácteos, pescados, frutas y vegetales en el G2. En ambos grupos, la adecuación de la ingesta alimentaria de la población estudiantil no cubrió las

  18. 43. Photographer unknown February 1925 MENDOCINO COUNTY, SECTION, HIGHWAY 1. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    43. Photographer unknown February 1925 MENDOCINO COUNTY, SECTION, HIGHWAY 1. 1-MEN-1-1 #12, NEW HIGHWAY DISPLACING OLD COUNTY ROAD, 2-25. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  19. 53. Photographer unknown Date unknown VAN DUZEN BRIDGE, HUMBOLDT COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    53. Photographer unknown Date unknown VAN DUZEN BRIDGE, HUMBOLDT COUNTY, SECTION F, HIGHWAY 1. 1. 1-HUM-1-F #24, VAN DUZEN BR. APPRAOCH/ST. 167+50. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  20. 42. F.W.H. photographer June 13, 1930 MEN AND EQUIPMENT WORKING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    42. F.W.H. photographer June 13, 1930 MEN AND EQUIPMENT WORKING ON SURFACING ROAD. MENDOCINO COUNTY, SECTION, HIGHWAY 1. 1-MEN-1-H #12, F.W.H., 6-13-30. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  1. Science and Mathematics Initiatives in Education: A Model Distance Learning Program Building Telecommunications Bridges to Rural Schools.

    ERIC Educational Resources Information Center

    Schatzman, Susan

    An 18-month model distance learning program for rural middle and secondary school math and science teachers was developed by University of California Berkeley Extension in partnership with California rural educators. The program aimed to provide access to professional development for relatively isolated rural teachers in Del Norte, Humboldt, and…

  2. 59. V.H.G., photographer October 27, 1948 EUREKA, HUMBOLDT COUNTY, HIGHWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    59. V.H.G., photographer October 27, 1948 EUREKA, HUMBOLDT COUNTY, HIGHWAY 1. HUM-1-EUR #59, LOOKING NORTH BROADWAY & CEDAR, 10-27-48, V.H.G. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  3. 58. V.H.G., photographer October 27, 1948 EUREKA, HUMBOLDT COUNTY, HIGHWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    58. V.H.G., photographer October 27, 1948 EUREKA, HUMBOLDT COUNTY, HIGHWAY 1. HUM-1-EUR #60, LOOKING SOUTH, BROADWAY & CLARK, 10-27-48, V.H.G. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  4. Behavioral Ecology of Euglossine Bees of the Atlantic Rain Forest

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Before the colonization of Brazil, the Atlantic Forest extended from Rio Grande do Norte to Rio Grande do Sul. As recently as 1832, Charles Darwin described it as "a forest which in the grandeur of all its parts could not be exceeded." It is now highly fragmented and only 8% of its former size, wi...

  5. PCR reveals high prevalence of non-sporulating Nosema bombi(Microsporidia) infections in bumble bees (Bombus)in northern Arizona

    Technology Transfer Automated Retrieval System (TEKTRAN)

    About 20% of bumble bee species are in decline in North America, and the microsporidian pathogen, Nosema bombi, may be a factor in these declines. We performed a comprehensive survey of N. bombi infections in the bumble bee communities throughout the flight season along an elevation gradient in Nort...

  6. Nitrous oxide emission from uplands in Northern China

    Technology Transfer Automated Retrieval System (TEKTRAN)

    For uplands with high pH, low groundwater table and low dissolved organic carbon content, such as the Northern China, nitrification may play an important role in soil N2O emission. The microbial mechanisms and controls seem to be different in soils with high groundwater table, e.g., the Nort...

  7. 77 FR 61051 - Additional Designations, Foreign Narcotics Kingpin Designation Act

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-05

    ..., Delegacion Benito Juarez, Distrito Federal Codigo Postal 03300, Mexico; Circuito de las Flores Norte 2252... Juarez, Distrito Federal Codigo Postal 03100, Mexico; Castillo de Kent 38, Manzana 26 Lote 37, Condado de.... 366, Planta Alta, Colonia Narvarte, Delegacion Benito Juarez, Distrito Federal Codigo Postal...

  8. 78 FR 59766 - Additional Designations, Foreign Narcotics Kingpin Designation Act

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-27

    ... General, the Director of the Central Intelligence Agency, the Director of the Federal Bureau of... AGENCY: Office of Foreign Assets Control, Treasury. ACTION: Notice. SUMMARY: The U.S. Department of the..., Distrito Central, Francisco Morazan, Honduras; Barrio Los Laureles, Carretera Panamericana Norte contiguo...

  9. Spawning aggregations of three protogynous groupers in the southern Gulf of Mexico.

    PubMed

    Tuz-Sulub, A; Brulé, T

    2015-01-01

    Spawning aggregations of red hind Epinephelus guttatus, tiger grouper Mycteroperca tigris and yellowfin grouper Mycteroperca venenosa were identified at two coral-reef systems: Arrecife Alacranes (emergent bank reef) and Bajos del Norte (submerged bank reef) on the continental shelf of the Yucatan Peninsula (Campeche Bank), Mexico. At both reefs, E. guttatus forms large spawning aggregations between February and March. At Bajos del Norte, M. tigris reproduces in a small, low-density aggregation in May, while M. venenosa aggregates at high densities for spawning between March and May. Multi-species use of an aggregation site by E. guttatus and M. venenosa was observed at Bajos del Norte. The identified spawning aggregations are apparently stable in location over time, and all three species were commonly observed to spawn within 1 week following the full moon. Development and survival of the larvae spawned in these aggregations are probably aided by a seasonal (spring-summer) upwelling in the north-east Campeche Bank. A permanent area closure at Bajos del Norte, currently outside any specific fisheries management area or regulations, would provide protection needed for the spawning aggregations of these three species.

  10. 9. VIEW, LOOKING SOUTHEAST, ALONG CENTERLINE FROM SOUTH CANTILEVER TOWER. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. VIEW, LOOKING SOUTHEAST, ALONG CENTERLINE FROM SOUTH CANTILEVER TOWER. Note emergency bracing installed beneath collapsed tower, and crumpled vertical members at right and left. - Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescent City, Del Norte County, CA

  11. 23. VIEW SHOWING HIGH WATER IN ROWDY CREEK WITH COLLAPSED ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. VIEW SHOWING HIGH WATER IN ROWDY CREEK WITH COLLAPSED SECTION IN CREEK, LOOKING NORTH TO SOUTH FROM END OF UNCOLLAPSED SECTION Winter 1931-32 - Rowdy Creek Bridge, Spanning Rowdy Creek at Fred Haight Drive, Smith River, Del Norte County, CA

  12. Children of La Frontera. Chapter 1: Introduction.

    ERIC Educational Resources Information Center

    Flores, Judith LeBlanc; Hammer, Patricia Cahape

    This introduction to the papers assembled in "Children of La Frontera" provides background information on Mexican immigration to the United States, Mexican migrant workers and their children, and implications for schools. It discusses economic forces in both Mexico and the United States that push and pull Mexicans to "El Norte"; the economic…

  13. 7. ABANDONED OLD HIGHWAY 101. NORTH OF LEGGETT. HUMBOLDT COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. ABANDONED OLD HIGHWAY 101. NORTH OF LEGGETT. HUMBOLDT COUNTY, CALIFORNIA. NOTE CANTILEVERED DECKING. SOUTH FORK OF EEL RIVER AT LEFT. LOOKING SW. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  14. 1. CONTEXTUAL VIEW OF BRIDGE IN SETTING, LOOKING SOUTHWEST, FROM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. CONTEXTUAL VIEW OF BRIDGE IN SETTING, LOOKING SOUTHWEST, FROM DOWNSTREAM. Crew, vehicles, boats, and equipment are from the California Department of Transportation's Transportation Laboratory conducting test borings for the replacement bridge. - Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescent City, Del Norte County, CA

  15. 45. C.P.S., photographer January 1936 MENDOCINO COUNTY, SECTION, HIGHWAY 1. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    45. C.P.S., photographer January 1936 MENDOCINO COUNTY, SECTION, HIGHWAY 1. MEN-I-J #132, 388+00 81TTC2, LOOKING SOUTH LANES FLAT, C.P.S., 1-36. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  16. 47. N.R.P., photographer January 14, 1938 MENDOCINO COUNTY, SECTION, HIGHWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    47. N.R.P., photographer January 14, 1938 MENDOCINO COUNTY, SECTION, HIGHWAY 1. 1-MEN-1-J #144, ROCK CREEK BRIDGE. SO., 1-14-38, N.R.P. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  17. 46. C.P.S., photographer March 1936 MENDOCINO COUNTY, SECTION, HIGHWAY 1. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    46. C.P.S., photographer March 1936 MENDOCINO COUNTY, SECTION, HIGHWAY 1. MEN-1-J#135, 384+50 81TTC2, LOOKING SOUTH LANES FLAT, C.P.S., 36. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  18. Spawning aggregations of three protogynous groupers in the southern Gulf of Mexico.

    PubMed

    Tuz-Sulub, A; Brulé, T

    2015-01-01

    Spawning aggregations of red hind Epinephelus guttatus, tiger grouper Mycteroperca tigris and yellowfin grouper Mycteroperca venenosa were identified at two coral-reef systems: Arrecife Alacranes (emergent bank reef) and Bajos del Norte (submerged bank reef) on the continental shelf of the Yucatan Peninsula (Campeche Bank), Mexico. At both reefs, E. guttatus forms large spawning aggregations between February and March. At Bajos del Norte, M. tigris reproduces in a small, low-density aggregation in May, while M. venenosa aggregates at high densities for spawning between March and May. Multi-species use of an aggregation site by E. guttatus and M. venenosa was observed at Bajos del Norte. The identified spawning aggregations are apparently stable in location over time, and all three species were commonly observed to spawn within 1 week following the full moon. Development and survival of the larvae spawned in these aggregations are probably aided by a seasonal (spring-summer) upwelling in the north-east Campeche Bank. A permanent area closure at Bajos del Norte, currently outside any specific fisheries management area or regulations, would provide protection needed for the spawning aggregations of these three species. PMID:25557429

  19. Algunos Resumenes

    NASA Astrophysics Data System (ADS)

    1980-12-01

    EI "Palomar Observatory Sky Survey" es un medio auxiliar bien conocido y ütil para los astronomos. Todo el cielo dei hemisferio Norte esta captado en lotografias, cuyas reproducciones se encuentran archivadas en las bibliotecas de casi todos los observatorios importantes dei mundo.

  20. Schizopolis: Border Cinema and the Global City (of Angels)

    ERIC Educational Resources Information Center

    Fojas, Camilla

    2006-01-01

    The films "Star Maps" and "El Norte" reveal the real political, socioeconomic, and psychic costs of divided cities by bringing the simulated realities of mass media to their logical end, thereby sacrificing each character to the disorder of the city. In "Star Maps", Carlos dreams of becoming the next major Latino star, but this dream is rendered…

  1. DRINKING WATER ISSUES

    EPA Science Inventory

    According to recent reports by the California Department of Health Services, the State of Maine, and the United State Geological Survey (USGS); the fuel oxygenate methyl teri-butyl ether (MTBE) is present in 5 to 20 percent of the drinking water sources in California and the nort...

  2. 77 FR 71702 - Final Flood Elevation Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-04

    ... 12866 of September 30, 1993, Regulatory Planning and Review, 58 FR 51735. ] Executive Order 13132... et seq.; Reorganization Plan No. 3 of 1978, 3 CFR, 1978 Comp., p. 329; E.O. 12127, 44 FR 19367, 3 CFR... Mascaras confluence. Approximately 100 feet +7338 upstream of Camino Del Norte. Arroyo De La Paz At...

  3. 76 FR 48946 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-09

    ... Emergency Economic Powers Act (50 U.S.C. 1701-1706) (``IEEPA''), issued Executive Order 12978 (60 FR 54579... Alzate S.C.S., Cali, Colombia; c/o Outsourcing De Operaciones S.A., Bogota, Colombia; c/o Turismo Hansa S... S.C.S., Calle 16 Norte No. 9N-41, Cali, Colombia; NIT 805009126-0 (Colombia) 8. Outsourcing...

  4. "Mexico in Transition." Curriculum Units.

    ERIC Educational Resources Information Center

    Oregon Univ., Eugene. Foreign Language Resource Center.

    These curriculum units were developed in a National Endowment for the Humanities 1994 summer seminar "Mexico in Transition." The 23 lessons are written in Spanish. Lessons are entitled: (1) "La Migracion Mexicana Vista a Traves del Cuento 'Paso del Norte' de Juan Rulfo" (Jose Jorge Armendariz); (2) "Los Grupos Indigenas de Mexico: Condiciones…

  5. 76 FR 11772 - Environmental Management Site-Specific Advisory Board, Northern New Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-03

    ... Environmental Management Site-Specific Advisory Board, Northern New Mexico AGENCY: Department of Energy. ACTION...-Specific Advisory Board (EM SSAB), Northern New Mexico (known locally as the Northern New Mexico Citizens... Norte, Espanola, New Mexico 87532. FOR FURTHER INFORMATION CONTACT: Menice Santistevan, Northern...

  6. 54. Photographer unknown February 1925 HUMBOLDT COUNTY, SECTION J, HIGHWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    54. Photographer unknown February 1925 HUMBOLDT COUNTY, SECTION J, HIGHWAY 1. HUM-1-J #34, SINKS ALONG HIGH. NEAR OCEAN, 2-25. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  7. 56. Photographer unknown February 1925 HUMBOLDT COUNTY, SECTION J, HIGHWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    56. Photographer unknown February 1925 HUMBOLDT COUNTY, SECTION J, HIGHWAY 1. HUM-1-J #36, SINKS ALONG OCEAN SHORE, 2-25. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  8. Two new species of Aulospongus Norman, 1878 with a key to the Atlantic species (Poecilosclerida; Demospongiae; Porifera).

    PubMed

    Cavalcanti, Thaynã; Santos, George Garcia; Pinheiro, Ulisses

    2014-07-03

    We describe two new species: Aulospongus trirhabdostylus sp. nov. and Aulospongus mandela sp. nov. from Potiguar Basin (Rio Grande do Norte State, Northeastern Brazil). Both species were compared with their congeners and an identification key for the Atlantic species of Aulospongus is provided. The genus Aulospongus now contains 16 species.

  9. 11. VIEW, LOOKING SOUTHEAST, ALONG CENTERLINE FROM SOUTH CANTILEVER TOWARD ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. VIEW, LOOKING SOUTHEAST, ALONG CENTERLINE FROM SOUTH CANTILEVER TOWARD TOWARD NORTH PORTAL. Note vertical displacement in deck caused by partial collapse at point of connection between south cantilever arm and suspended span. - Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescent City, Del Norte County, CA

  10. RAPID ASSESSMENT OF URBAN WETLANDS: FUNCTIONAL ASSESSMENT MODEL DEVELOPMENT AND EVALUATION

    EPA Science Inventory

    The objective of this study was to test the ability of existing hydrogeomorphic (HGM) functional assessment models and our own proposed models to predict rates of nitrate production and removal, functions critical to water quality protection, in forested riparian wetlands in nort...

  11. 57. G.M.W., photographer March 26, 1940 HUMBOLDT COUNTY, SECTION K, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    57. G.M.W., photographer March 26, 1940 HUMBOLDT COUNTY, SECTION K, HIGHWAY 1. HUM-1-K #93, STA. 255, 3-26-40, G.M.W. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  12. Do the Factors Affecting Academic Achievement Differ by the Socio-Economic Status or Sex of the Student? A Puerto Rican Secondary School Sample. Final Report.

    ERIC Educational Resources Information Center

    Nuttall, Ronald L.

    Variables expected to be associated with academic achievement were examined in a sample (generally exceeding 2500) from eight secondary schools in Baymon Norte, Puerto Rico. Concern was whether variables associated with academic achievement differed by sex or by socioeconomic status (SES). Multivariate analyses of variance with three factors of…

  13. Astronomy in Syria

    NASA Astrophysics Data System (ADS)

    Al-Mousli, A. T.

    2006-11-01

    Syria has been involved in the field of astronomy since 1997, when Prof. F.R. QUERCI, France, visited Syria and made a presentation on the International NORT project; (NORT: the Network of Oriental Robotic Telescope), which was a selected project of the sixth United Nations/ European Space Agency Workshop on Basic Space Science (document no. A/AC.105/657 dated 13/12/1996). NORT aims to establish a robotic telescope network on high mountain peaks around the Tropic of Cancer, from Morocco in the west to the desert of China in the east. The purposes for establishing this network are technical and educational. The General Organization of Remote Sensing (GORS) has carried out a pilot study using remote sensing techniques and has selected four sites in order to determine the best location for the astronomical observatory the within NORT programme. Following this project, GORS decided to establish an office for astronomical studies, one of the earliest works of GORS in astronomy was an initiative to establish a planetarium within the GORS campus, to accommodate approximately 120 observers. A contest to choose the best planetarium design, for the Arab World, took place at GORS.

  14. Managing the Environmental Impacts of Growth Under Climate Change: A Workshop for State and Local Decision-Makers--Workshop Summary

    EPA Science Inventory

    From November 8/9, 2011, the U.S. Environmental Protection Agency (EPA) hosted a workshop titled "Managing the Environmental Impacts of Growth Under Climate Change." The Office of Research and Development (ORD) organized the meeting, which was held in Research Triangle Park, Nort...

  15. Growth and Quality of Cool-Season Perennial Grass Species in the Southern Great Plains

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Annually planted winter wheat is the major cool-season livestock forage enterprise in a large part of the southern Great Plains and is a good complement to warm-season perennials. However, gaps in both fall and spring exist in the system. Cool-season perennial grasses that have origins in the Nort...

  16. Mexican American History as an Elective High School Subject: Promoting Ethnic Literacy and Citizenship among DNISD Students.

    ERIC Educational Resources Information Center

    Sianez, Steve

    At Del Norte Independent School District (DNISD) (El Paso, Texas), Mexican American students are the majority ethnic group, but their history and culture have not been incorporated into the high school curriculum. Hence a goal of citizenship education, to increase student understanding of their own ethnic heritage and its part in U.S. history, is…

  17. Recharge areas and hydrochemistry of carbonate springs issuing from Semmering Massif, Austria, based on long-term oxygen-18 and hydrochemical data evidence

    NASA Astrophysics Data System (ADS)

    Yehdegho, Beyene; Reichl, Peter

    2002-10-01

    Résumé. Les teneurs en oxygène-18 et l'hydrochimie des sources émergeant du massif de Semmering ont été suivies de manière intensive dans le but de caractériser les zones de recharge et l'évolution hydrochimique. L'effet d'altitude sur le δ18O a été déterminé grâce aux données isotopiques et hydrogéologiques de petites sources de référence, principalement en terrains cristallins; cet effet est d'environ -0,27 et -0,21‰ par 100 m pour les versants respectivement nord et sud du massif. En appliquant ces valeurs, l'altitude moyenne de recharge des sources a été calculée. Pour les sources à fort débit issues des carbonates, elle est comprise entre 1,100 et 1,400 m, compatible avec le cadre topographique et hydrogéologique des calcaires et des dolomies de l'Austro-alpin inférieur alimentant ces sources. La composition chimique des sources des carbonates est dominée par les ions Ca2+, Mg2+, HCO3- et SO42-. Les sources sont presque toutes proches de la saturation par rapport à la calcite, mais sont sous-saturées en dolomite (sauf quelques sources proches de la saturation). Comme cela est habituel en ce qui concerne le dioxyde de carbone fourni par les sols en régions montagneuses, la pCO2 équilibrante moyenne est faible, comprise entre 10-3.0 et 10-2.5 atm (0,1 à 0,3% en volume). En ce qui concerne les variations à long terme, le pH, SIc, Sid et la pCO2 équilibrante sont soumis à des variations saisonnières, alors que les concentrations en Ca2+, Mg2+ et HCO3- ne varient pratiquement pas. En intégrant les résultats de δ18O et les données hydrochimiques, la variabilité altitudinale du chimisme des eaux souterraines des carbonates est démontrée. Reflétant les variations d'activité biologique et des conditions de recharge dans les zones d'alimentation, une covariation négative résulte de l'altitude de recharge et de la pCO2 et la concentration en HCO3- n'est pas modifiée par aucun des termes source ou puits, ce qui fait varier

  18. Extraterrestrial hydrogeology

    NASA Astrophysics Data System (ADS)

    Baker, Victor R.; Dohm, James M.; Fairén, Alberto G.; Ferré, Ty P. A.; Ferris, Justin C.; Miyamoto, Hideaki; Schulze-Makuch, Dirk

    2005-03-01

    historias planetarias. La Tierra es principalmente generosa con la recarga de la mayoría de reservorios de aguas subterráneas a partir de amplia precipitación reconocida en condiciones transitorias calientes y heladas, tal y como aparece en los registros fósiles y geológicos. Por otro lado, Marte se encuentra principalmente en una etapade cámara de hielo la cual es interrumpida por actividad de tipo endogénico. Esta actividad pone en funcionamiento catastróficamente ciclos hidrológicos de vida corta y perturbaciones climáticas asociadas. Acuíferos regionales en las montañas de Marte que se desarrollaron en el pasado en condiciones similares a la Tierra distribuyen agua a las planicies del norte. El agua ha sido transportada hacia el sur de la región polar durante cambios en el clima inducidos por actividad endogénica y/o cambios en los parámetros orbitales de Marte. Venus muy probablemente tuvo una hidrósfera caliente durante cientos de millones de años, antes de que se desarrollara su atmósfera y superficie actual extremadamente caliente. Subsecuentemente, Venus perdió su hidrósfera a medida que la luminosidad solar aumentó y un efecto de invernadero húmedo escapatorio se llevó a cabo. Océanos subsuperficiales de composición agua o amoniaco-agua, inducidos por fuerzas de marea y calentamiento radiogénico, probablemente ocurren en los satélites más grandes como Europa, Ganimeda, Callisto, Titan y Triton. Las fuerzas de marea que operan entre los cuerpos pequeños del sistema solar externo podrían también promover la fusión de hielo y la estabilidad de líquido interno-aguas de los océanos.

  19. [OBESITY MANAGEMENT IN THE PRIMARY CARE SETTING BY AN INTENSIVE LIFESTYLE INTERVENTION].

    PubMed

    Armenta Guirado, Brianda Ioanna; Díaz Zavala, Rolando Giovanni; Valencia Juillerat, Mauro Eduardo Fernando; Quizán Plata, Trinidad

    2015-10-01

    Objetivo: comparar un Programa Intensivo de Cambio de Estilo de Vida con el Tratamiento Tradicional para el manejo de la obesidad en el primer nivel de atención. Sujetos y métodos: estudio de intervención aleatorizado controlado, en el que participaron 42 adultos con obesidad. Los sujetos asignados al Programa Intensivo de Cambio de Estilo de Vida recibieron un protocolo de cambio de conducta validado “Equilibrio de Estilo de Vida” en 12 sesiones, consultas semanales con un nutriólogo y remplazos de comidas. El Tratamiento Tradicional consistió en consultas mensuales con un nutriólogo que proporcionó orientación nutricional y de actividad física. Resultados: después de tres meses se midió al 97% de los participantes que iniciaron el estudio. Los sujetos del Programa Intensivo de Cambio de Estilo de Vida y del Tratamiento Tradicional mostraron los siguientes cambios en el peso corporal: (mediana [percentil 25-75]) (-4,7 kg [-6,5, -3,1]) vs. (+0,4 kg [-0,3, 1,3]). El 62% de los participantes del Programa Intensivo de Cambio de Estilo de Vida bajaron más de un 5% del peso corporal, contra el 0% en el grupo de Tratamiento Tradicional (p < 0,001). Conclusiones: este estudio es una evidencia preliminar de que un Programa Intensivo de Cambio de Estilo de Vida puede ser una alternativa efectiva para el tratamiento de la obesidad en el primer nivel de atención.

  20. A geochemical and geophysical approach to derive a conceptual circulation model of CO2-rich mineral waters: A case study of Vilarelho da Raia, northern Portugal

    NASA Astrophysics Data System (ADS)

    Marques, J. M.; Santos, Monteiro; Graça, R. C.; Castro, R.; Aires-Barros, L.; Mendes Victor, L. A.

    2001-11-01

    The Vilarelho da Raia-Chaves region, located in northern Portugal adjacent to the Spanish border, is characterized by both hot and cold CO2-rich mineral waters issuing from springs and drilled wells. The present paper updates the conceptual circulation model of the Vilarelho da Raia cold CO2-rich mineral waters. Vilarelho da Raia mineral waters, dominated by Na and HCO3 ions, have formed mainly by interaction with CO2 of deep-seated mantle origin. The δ18O, δ2H and 3H values indicate that these waters are the result of meteoric waters infiltrating into Larouco Mountain, NW of Vilarelho da Raia, circulating at shallow depths in granitic rocks and moving into Vilarelho da Raia area. The conceptual geochemical and geophysical circulation model indicates that the hot and cold CO2-rich mineral waters of Chaves (76 °C) and Vilarelho da Raia (17 °C) should be considered manifestations of similar but not the same geohydrological systems. Résumé. La région de Vilarelho da Raia - Chaves, située au Portugal près de la frontière Espagnole, est caractérisée par des eaux carbogazeuses, chaudes et froides, émergeant à des sources et dans des puits. Ce travail constitue une mise au point du modèle conceptuel de circulation des eaux minérales carbogazeuses froides de Vilarelho da Raia. Les eaux minérales de Vilarelho da Raia, dans lesquelles les ions Na and HCO3 sont dominants, résultent principalement d'interactions avec du CO2 d'origine mantellique. Les δ18O, les δ2H, et les teneurs en 3H indiquent que ces eaux proviennent de l'infiltration d'eaux météoriques dans le Mont Larouco au NW de Vilarelho da Raia, circulant à faible profondeur dans les granites en direction de la région de Vilarelho da Raia. Le modèle de circulation géochimique et géophysique conduit à penser que les eaux minérales carbogazeuses chaudes et froides de Chaves (76 °C) et de Vilarelho da Raia (17 °C) doivent être considérées comme des manifestations de systèmes hydrog

  1. First record of Microlynchia pusilla (Diptera: Hippoboscidae) in Northeastern Brazil.

    PubMed

    Silva, Honara Morgana da; Pichorim, Mauro

    2013-01-01

    The present paper reports the occurrence of Microlynchia pusilla in the state of Rio Grande do Norte (RN) on Leptotila verreauxi approximans from a deciduous forest fragment located in the municipality of Macaíba. A specimen of L. v. approximans was collected in June 2012, wrapped in paper towels and kept under refrigeration in a plastic bag for later analysis of parasite fauna, taxidermy, and eventual storage in the Ornithological Collection of the Federal University of Rio Grande do Norte (UFRN). During the search for ectoparasites, a specimen of M. pusilla was found among feathers of the ventral region; it was collected and stored in the Entomological Collection 'Adalberto Antônio Varela-Freire' of the same university. This report extends the knowledge about geographical distribution and confirms the association of M. pusilla with hosts Columbiformes, contributing to the knowledge of the family Hippoboscidae in the country. PMID:23778828

  2. Impacts of ground water over exploitation on agricultural development and environment using RS & GIS case study (Garabolli area North west of Libya )

    NASA Astrophysics Data System (ADS)

    Shbeli, E.

    Impacts of Grownd water-over exploitation on agricultural development and Environment in nort-west Libya (Garabolli area) using R.S AND GIS. This study was carried out in Garabolli area nort-west of Libya which is east of Tripoli about 60km. This study reviews the development of grownd water abstraction in the area and displays its impacts on the aquifer water levels and salinity . Satellite data were used to produce land use land cover and soil maps scale 1:50000. Each soil mapping units investigated in the field and the soils were characterized and classified. The comparison between 2 different dates spot multispectral images were applied in this paper. GIS techniques were used to produce different maps and some statistics tables shows in the report.

  3. First record of Microlynchia pusilla (Diptera: Hippoboscidae) in Northeastern Brazil.

    PubMed

    Silva, Honara Morgana da; Pichorim, Mauro

    2013-01-01

    The present paper reports the occurrence of Microlynchia pusilla in the state of Rio Grande do Norte (RN) on Leptotila verreauxi approximans from a deciduous forest fragment located in the municipality of Macaíba. A specimen of L. v. approximans was collected in June 2012, wrapped in paper towels and kept under refrigeration in a plastic bag for later analysis of parasite fauna, taxidermy, and eventual storage in the Ornithological Collection of the Federal University of Rio Grande do Norte (UFRN). During the search for ectoparasites, a specimen of M. pusilla was found among feathers of the ventral region; it was collected and stored in the Entomological Collection 'Adalberto Antônio Varela-Freire' of the same university. This report extends the knowledge about geographical distribution and confirms the association of M. pusilla with hosts Columbiformes, contributing to the knowledge of the family Hippoboscidae in the country.

  4. Biology of the Rio Grande border region : a bibliography

    USGS Publications Warehouse

    Johnson, Lynne E.; Jacobs, Linda J.; Papoulias, Diana

    1997-01-01

    This bibliography includes 1,913 references to the literature of the Rio Grande (Rio Bravo del Norte). The specific geographic area covered extends 100 km on either side of the river from Elephant Butte Dam in New Mexico to the Gulf of Mexico. The bibliography focuses on the biological literature, divided into major subject areas, and also includes supporting literature from the physical and environmental sciences.

  5. A new species of Charinus Simon, 1892 from northeastern Brazil with comments on the potential distribution of the genus in Central and South Americas (Arachnida: Amblypygi: Charinidae).

    PubMed

    Vasconcelos, Ana Caroline Oliveira; Giupponi, Alessandro Ponce De Leão; Ferreira, Rodrigo Lopes

    2013-01-01

    A new species of the genus Charinus Simon, 1892 is described from caves in the Rio Grande do Norte, Brazil. This is the first record of the genus for the state. This paper presents a map of the Charinus species distribution in Brazil with new records and a map of potential distribution of the genus in South and Central Americas. An updated key for Charinus species from Brazil is also presented.

  6. 55. E.M.C., photographer July 3, 1936 HUMBOLDT COUNTY, SECTION J, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    55. E.M.C., photographer July 3, 1936 HUMBOLDT COUNTY, SECTION J, HIGHWAY 1. 1-HUM-I-J #80, BITUMULS PORTION OF EXPERIMENTAL SECTION, E.M.C, 7-3-36. BACK READS: C/PROCESSING STABILIZING BITUMULS WITH BLADE AFTER BEING PROCESSED WITH SPRING TOOTH HARROW. Stamped office copy. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

  7. Calorimetric thermometry of meteoritic troilite: A feasibility study

    NASA Technical Reports Server (NTRS)

    Allton, J. H.; Gooding, J. L.

    1993-01-01

    Two solid-state phase transitions in troilite (FeS) can be readily measured by differential scanning calorimetry (DSC) on samples of only a few milligrams. Troilite from the Mundrabilla iron meteorite displays a DSC fingerprint which is distinct from that of terrestrial troilite from Del Norte Co., California; their response to subsequent heating also differ significantly. Further work may establish whether troilite thermometry of meteorites is possible using DSC.

  8. The first occurrence of the order Mormonilloida (Copepoda) in the tropical Southwest Atlantic Ocean.

    PubMed

    Melo, Pedro Augusto M C; De Melo Júnior, Mauro; Araújo, Moacyr; Neumann-Leitão, Sigrid

    2015-03-01

    This communication is the first report of the occurrence of the order Mormonilloida (Mormonilla phasma) in the tropical Southwestern Atlantic Ocean. Female individuals were found in surface waters from the shelf break state of Rio Grande do Norte (Northeastern Brazil) and between depths of 60 and 100 m in the epipelagic layer around the St. Peter and St. Paul Archipelago (equatorial Atlantic). This finding extends the vertical limits for this species.

  9. Phylogenetic and morphologic evidence confirm the presence of a new montane cloud forest associated bird species in Mexico, the Mountain Elaenia (Elaenia frantzii; Aves: Passeriformes: Tyrannidae)

    PubMed Central

    Ortiz-Ramírez, Marco F.; Ríos-Muñoz, César A.; Cayetano-Rosas, Héctor; Bowie, Rauri C. K.; Navarro-Sigüenza, Adolfo G.

    2016-01-01

    Here we provide evidence to support an extension of the recognized distributional range of the Mountain Elaenia (Elaenia frantzii) to include southern Mexico. We collected two specimens in breeding condition in northwestern Sierra Norte de Chiapas, Mexico. Morphologic and genetic evidence support their identity as Elaenia frantzii. We compared environmental parameters of records across the entire geographic range of the species to those at the northern Chiapas survey site and found no climatic differences among localities. PMID:26855860

  10. Phylogenetic and morphologic evidence confirm the presence of a new montane cloud forest associated bird species in Mexico, the Mountain Elaenia (Elaenia frantzii; Aves: Passeriformes: Tyrannidae).

    PubMed

    Hanna, Zachary R; Ortiz-Ramírez, Marco F; Ríos-Muñoz, César A; Cayetano-Rosas, Héctor; Bowie, Rauri C K; Navarro-Sigüenza, Adolfo G

    2016-01-01

    Here we provide evidence to support an extension of the recognized distributional range of the Mountain Elaenia (Elaenia frantzii) to include southern Mexico. We collected two specimens in breeding condition in northwestern Sierra Norte de Chiapas, Mexico. Morphologic and genetic evidence support their identity as Elaenia frantzii. We compared environmental parameters of records across the entire geographic range of the species to those at the northern Chiapas survey site and found no climatic differences among localities.

  11. Predictors of adherence to the Mediterranean diet from the first to the second trimester of pregnancy.

    PubMed

    Abreu, Sandra; Santos, Paula Clara; Moreira, Pedro; Santos, Rute; Moreira, Carla; Montenegro, Nuno; Mota, Jorge

    2014-10-04

    Introducción: Aunque los cambios en los patrones pueden ocurrir durante la gestación, predictores de estos cambios no han sido exploradas. Este estudio pretende identificar predictores de la adhesión a la dieta mediterránea (DM) desde el primer al segundo trimestre del embarazo. Metodología: Se realizó un estudio prospectivo con 102 embarazadas de edad 18-40, de la ciudad de Oporto, Portugal. Se evaluaron las características socio-demográficas y de estilo de vida a través de un cuestionario. Consumo de alimentos se evaluó con un diario de alimentos de tres días concluido durante los primeras y segundo trimestres. Los participantes fueron categorizados según su cambio en la adhesión a la DM en el cambio negativo (es decir, las mujeres que tenían poca adhesión en cada trimestre o tenido alta adhesión en el primer trimestre y luego baja adhesión en el segundo) y el grupo de cambio positivo (es decir, las mujeres que tenían alta adhesión en ambos trimestres o tenía baja adhesión en el primer trimestre y luego elevada adhesión en el segundo). Modelos de regresión logística stepwise condicional se realizaron para evaluar los posibles predictores de la variación negativa de DM. Resultados: Entre las 102 mujeres, 39,2% tenían cambio negativo del primer al segundo trimestre. Los resultados model´s logística muestran que estar casada (OR = 0,26, IC95%: 0,10, 0,76) y tener una mayor ingesta de verduras en el primer trimestre (OR = 0,17, IC95%: 0,10, 0,43) se asociaron con menor probabilidad de tener un cambio negativo en la adhesión a la DM del primer al segundo trimestre. Conclusiones: Estado civil y el consumo de vegetal parecen estar asociado con una menor ocurrencia de cambio negativo en la adhesión a la MD desde temprano a medio embarazo.

  12. Reproduccion del ganado

    Technology Transfer Automated Retrieval System (TEKTRAN)

    La determination de prenez es una de las principales herramientas de manejo en el Ganado de came. Le habilidad de determiner prenez proporciona al productor un medio de tomar sus decsiones de seleccion y descartarte en momentos decisivos, enfocando los recursos de la operacion en reporductores confi...

  13. Comunicado de prensa del Informe Anual sobre el Estado del Cáncer 2015

    Cancer.gov

    Por primera vez, los investigadores han usado datos a nivel nacional para determinar la incidencia de los cuatro subtipos moleculares principales de cáncer de seno (mama) por edad, raza y grupo étnico, nivel de pobreza y varios otros factores. El informe

  14. Hidrógeno neutro en el Hemisferio Austral

    NASA Astrophysics Data System (ADS)

    Morras, R.

    Se muestran los resultados de la distribución del HI en el cielo austral, obtenidos a partir de los datos de un relevamiento en la línea de 21 cm recientemente concluido en el IAR. Se discuten algunos de los principales problemas que pueden confrontarse con las observaciones de HI de nuestra Galaxia.

  15. Informe a la Nación de mortalidad por cáncer sigue bajando

    Cancer.gov

    El Informe Anual a la Nación sobre el Estado del Cáncer, de 1975 a 2009, indica que los índices generales de mortalidad por cáncer siguen bajando en los Estados Unidos en hombres y mujeres, entre todos los grupos raciales y étnicos principales y para todo

  16. Approaches to optimal aquifer management and intelligent control in a multiresolutional decision support system

    NASA Astrophysics Data System (ADS)

    Orr, Shlomo; Meystel, Alexander M.

    2005-03-01

    Despite remarkable new developments in stochastic hydrology and adaptations of advanced methods from operations research, stochastic control, and artificial intelligence, solutions of complex real-world problems in hydrogeology have been quite limited. The main reason is the ultimate reliance on first-principle models that lead to complex, distributed-parameter partial differential equations (PDE) on a given scale. While the addition of uncertainty, and hence, stochasticity or randomness has increased insight and highlighted important relationships between uncertainty, reliability, risk, and their effect on the cost function, it has also (a) introduced additional complexity that results in prohibitive computer power even for just a single uncertain/random parameter; and (b) led to the recognition in our inability to assess the full uncertainty even when including all uncertain parameters. A paradigm shift is introduced: an adaptation of new methods of intelligent control that will relax the dependency on rigid, computer-intensive, stochastic PDE, and will shift the emphasis to a goal-oriented, flexible, adaptive, multiresolutional decision support system (MRDS) with strong unsupervised learning (oriented towards anticipation rather than prediction) and highly efficient optimization capability, which could provide the needed solutions of real-world aquifer management problems. The article highlights the links between past developments and future optimization/planning/control of hydrogeologic systems. Malgré de remarquables nouveaux développements en hydrologie stochastique ainsi que de remarquables adaptations de méthodes avancées pour les opérations de recherche, le contrôle stochastique, et l'intelligence artificielle, solutions pour les problèmes complexes en hydrogéologie sont restées assez limitées. La principale raison est l'ultime confiance en les modèles qui conduisent à des équations partielles complexes aux paramètres distribués (PDE) à une

  17. Simulation of groundwater drainage into a tunnel in fractured rock and numerical analysis of leakage remediation, Romeriksporten tunnel, Norway

    NASA Astrophysics Data System (ADS)

    Kitterød, N.-O.; Colleuille, H.; Wong, W. K.; Pedersen, T. S.

    2000-09-01

    énérer l'hétérogénéité. La chenalisation de l'écoulement est le mécanisme d'écoulement le plus important si la variance du champ de perméabilité est grande par rapport à la valeur moyenne. Cette condition fait que les infiltrations dans le tunnel sont difficiles à contrôler. L'étanchéification du tunnel par des produits chimiques est simulé par une simple perturbation de la fonction de densité de probabilité log-normale de la perméabilité. Si la chenalisation de l'écoulement est le principal mécanisme de transport d'eau entrant dans le tunnel, la création d'une injection artificielle de l'eau pour contrôler l'infiltration dans le tunnel impose, pour réussir, une imperméabilisation préalable par des produits chimiques. Resumen. Se han aplicado métodos estadísticos convencionales para la simulación de la heterogeneidad en el túnel de Roeriksporte (Noruega), donde la presencia de agua en zonas fracturadas de alta permeabilidad originó problemas de drenaje en superficie durante su construcción. Una vez finalizado el túnel, para controlar la infiltración se inyectó agua en los pozos situados en su interior. La generación del campo heterogéneo se realizó a una escala lo suficientemente pequeña que permitiera simular los efectos de las medidas de control propuestas. El campo de flujo depende de la varianza de las permeabilidades y del modelo de covarianza utilizado para generar la heterogeneidad. El flujo a través de canales es el mecanismo dominante si la varianza del campo de permeabilidad es grande en relación con el valor esperado. Este hecho condiciona que las filtraciones en el túnel sean difíciles de controlar. Los principales efectos de los cambios de permeabilidad originados por las inyecciones para el sellado del túnel se simularon mediante una simple perturbación de la función de densidad de probabilidad lognormal de la permeabilidad. Si el flujo a través de canales es el principal mecanismo de la presencia de agua en el

  18. Healing war wounds and perfuming exile: the use of vegetal, animal, and mineral products for perfumes, cosmetics, and skin healing among Sahrawi refugees of Western Sahara

    PubMed Central

    2012-01-01

    exilio: el uso de productos vegetales, animales y minerales con fines de perfumería, cosmética y curativos de la piel entre los refugiados saharauis del Sáhara Occidental. Antecedentes Durante la última década ha habido un creciente interés en los estudios etnobiológicos de los conocimientos y prácticas de las personas que migran. Dentro de esta tendencia, los estudiosos han prestado relativamente menor atención a las personas desplazadas y a los refugiados: a la pérdida, el mantenimiento y la adaptación de sus conocimientos etnobiológicos, y su importancia para el bienestar de los refugiados. Este estudio se centra en los cosméticos y remedios para curar problemas de la piel tradicionalmente utilizados por los refugiados saharauis en los campamentos de desplazados al sudoeste de Argelia. Métodos Los métodos de investigación que se utilizaron son: una encuesta estructurada con 37 familias de refugiados, entrevistas semi-estructuradas con 77 refugiados, 24 entrevistas retrospectivas con refugiados e informantes conocedores, y una colección de muestra de las plantas y productos citados. Resultados Se registró el uso de 55 especies vegetales, nueve especies animales, y seis productos minerales utilizados en tres principales categorías de usos: 1) Recursos contra los problemas de salud característicos del entorno desértico donde una vez vivieron los saharauis como nómadas y donde ahora viven como refugiados (por ejemplo problemas en los ojos); 2) Remedios para heridas que reflejan la historia reciente de guerra de guerrilla de los nómadas saharauis; y 3) Cosméticos y productos utilizados para el cuidado del cuerpo, decoración y perfumes (por ejemplo, atención al cabello, limpieza de dientes, uso del henna) y como aromatizantes del aire al interior de las tiendas, que son ampliamente utilizados en la vida y las prácticas sociales cotidianas de los refugiados. Conclusiones En la discusión, se analizan los cambios qu

  19. Healing war wounds and perfuming exile: the use of vegetal, animal, and mineral products for perfumes, cosmetics, and skin healing among Sahrawi refugees of Western Sahara

    PubMed Central

    2012-01-01

    exilio: el uso de productos vegetales, animales y minerales con fines de perfumería, cosmética y curativos de la piel entre los refugiados saharauis del Sáhara Occidental. Antecedentes Durante la última década ha habido un creciente interés en los estudios etnobiológicos de los conocimientos y prácticas de las personas que migran. Dentro de esta tendencia, los estudiosos han prestado relativamente menor atención a las personas desplazadas y a los refugiados: a la pérdida, el mantenimiento y la adaptación de sus conocimientos etnobiológicos, y su importancia para el bienestar de los refugiados. Este estudio se centra en los cosméticos y remedios para curar problemas de la piel tradicionalmente utilizados por los refugiados saharauis en los campamentos de desplazados al sudoeste de Argelia. Métodos Los métodos de investigación que se utilizaron son: una encuesta estructurada con 37 familias de refugiados, entrevistas semi-estructuradas con 77 refugiados, 24 entrevistas retrospectivas con refugiados e informantes conocedores, y una colección de muestra de las plantas y productos citados. Resultados Se registró el uso de 55 especies vegetales, nueve especies animales, y seis productos minerales utilizados en tres principales categorías de usos: 1) Recursos contra los problemas de salud característicos del entorno desértico donde una vez vivieron los saharauis como nómadas y donde ahora viven como refugiados (por ejemplo problemas en los ojos); 2) Remedios para heridas que reflejan la historia reciente de guerra de guerrilla de los nómadas saharauis; y 3) Cosméticos y productos utilizados para el cuidado del cuerpo, decoración y perfumes (por ejemplo, atención al cabello, limpieza de dientes, uso del henna) y como aromatizantes del aire al interior de las tiendas, que son ampliamente utilizados en la vida y las prácticas sociales cotidianas de los refugiados. Conclusiones En la discusión, se analizan los cambios que se han producido en los patrones

  20. Stratigraphic and geochemical controls on naturally occurring arsenic in groundwater, eastern Wisconsin, USA

    NASA Astrophysics Data System (ADS)

    Schreiber, M. E.; Simo, J. A.; Freiberg, P. G.

    High arsenic concentrations (up to 12,000μg/L) have been measured in groundwater from a confined sandstone aquifer in eastern Wisconsin. The main arsenic source is a sulfide-bearing secondary cement horizon (SCH) that has variable thickness, morphology, and arsenic concentrations. Arsenic occurs in pyrite and marcasite as well as in iron oxyhydroxides but not as a separate arsenopyrite phase. Nearly identical sulfur isotopic signatures in pyrite and dissolved sulfate and the correlation between dissolved sulfate, iron, and arsenic concentrations suggest that sulfide oxidation is the dominant process controlling arsenic release to groundwater. However, arsenic-bearing oxyhydroxides can potentially provide another arsenic source if reducing conditions develop or if they are transported as colloids in the aquifer. Analysis of well data indicates that the intersection of the SCH with static water levels measured in residential wells is strongly correlated with high concentrations of arsenic in groundwater. Field and laboratory data suggest that the most severe arsenic contamination is caused by localized borehole interactions of air, water, and sulfides. Although arsenic contamination is caused by oxidation of naturally occurring sulfides, it is influenced by water-level fluctuations caused by municipal well pumping or climate changes, which can shift geographic areas in which contamination occurs. Résumé De fortes concentrations en arsenic, jusqu'à 12000μg/L, ont été mesurées dans l'eau souterraine d'un aquifère gréseux captif, dans l'est du Wisconsin. La principale source d'arsenic est un horizon à cimentation secondaire (SCH) comportant des sulfures, dont l'épaisseur, la morphologie et les concentrations en arsenic sont variables. L'arsenic est présent dans la pyrite et dans la marcassite, de même que dans des oxy-hydroxydes de fer, mais non pas dans une phase séparée d'arsénopyrite. Les signatures isotopiques du soufre presque identiques dans la

  1. Operación IceBridge: Explorando la Antártida

    NASA Video Gallery

    Operación IceBridge es una misión aérea de la NASA dedicada a estudiar cambios en el hielo marino y terrestre en ambos polos del planeta. En octubre y noviembre de 2012, IceBridge completó su cuart...

  2. Herramienta para distinguir lunares de melanoma.

    Cancer.gov

    “De lunares a melanoma: reconocimiento de las características ABCDE” presenta fotos que muestran cambios en lesions individuales pigmentadas con el tiempo, y describe las diferentes apariencias de lunares, de nevos displásicos y de melanomas.

  3. [Arterial pathology in migraine: endothelial dysfunction and structural changes in the brain and systemic vasculature].

    PubMed

    Larrosa-Campo, Davinia; Ramón-Carbajo, César; Álvarez-Escudero, Rocío; Cernuda-Morollón, Eva; García-Cabo, Carmen; Pascual, Julio

    2015-10-01

    Introduccion. La fisiopatologia subyacente a la asociacion entre migraña y otras enfermedades vasculares sistemicas no aterotromboticas no se conoce con certeza. La disfuncion endotelial se ha propuesto como nexo comun. A su vez, la disfuncion endotelial se considera como precursora de cambios estructurales en las paredes arteriales. Objetivo. Revisar el conocimiento actual acerca de las alteraciones funcionales (disfuncion endotelial) y estructurales (rigidez arterial y cambios ateroescleroticos) del lecho arterial asociadas a la migraña. Desarrollo. Estudios de marcadores biologicos de disfuncion endotelial en sangre periferica, vasorreactividad sistemica y cerebral, calculo de indices de rigidez arterial y visualizacion directa de cambios macroscopicos en la pared arterial han mostrado diferencias entre pacientes con y sin migraña, asi como entre los distintos subtipos de migraña. Conclusiones. La disfuncion endotelial, como precursora de cambios estructurales a nivel arterial, se postula como sustrato de la patologia vascular asociada a la migraña. La alteracion de marcadores biologicos es sugestiva de disfuncion endotelial en los pacientes con migraña; sin embargo, la correlacion con estudios de vasorreactividad no permite establecer conclusiones definitivas. Los datos disponibles no permiten concluir que la migraña se asocie con alteraciones macroscopicas fuera del lecho arterial cerebral.

  4. Estudios ALCHEMIST para el cáncer de pulmón en estadio inicial

    Cancer.gov

    ALCHEMIST comprende tres estudios clínicos integrados de medicina de precisión diseñados para identificar a personas con cáncer de pulmón en estadio inicial cuyos tumores tienen ciertos cambios genéticos poco comunes.

  5. Hacer frente - Su imagen propia y su sexualidad

    Cancer.gov

    El cáncer y su tratamiento pueden cambiar la forma como usted se ve y siente de su persona y de su cuerpo. Puede tomar algunas medidas para superar los cambios de su cuerpo y problemas relacionados con su sexualidad e intimidad.

  6. Los NIH anuncian el lanzamiento de los estudios ALCHEMIST

    Cancer.gov

    Los Estudios sobre la Secuenciación e Identificación de Marcadores para el Mejoramiento de la Terapia Adjuvante para el Cáncer de Pulmón, ALCHEMIST, identificarán a pacientes con cáncer de pulmón en estadio inicial cuyos tumores tienen cambios genéticos.

  7. Monitoring bird population trends in North America

    USGS Publications Warehouse

    Robbins, C.S.; Bystrak, D.; Geissler, P.H.; Purroy, F.J.

    1983-01-01

    Se ofrece un nuevo metodo para computar las oscilaciones demograficas de las aves a lo largo de los anos. Con los datos suministrados por el proyecto 'Aves nidificantes en Norteamerica' , se indican en la Tabla 1 las pautas de cambio numerico de una serie seleccionada de aves holarticas.

  8. [DO WEIGHT LOSS INCREASE LIFE EXPECTANCY?: SYSTEMATIC REVIEW].

    PubMed

    Lizárraga Hernández, Karen; Bacardí Gascón, Montserrat; Jiménez Cruz, Arturo

    2015-11-01

    Antecedentes: existe controversia sobre el efecto de la pérdida de peso sobre la mortalidad. Se realizó una revisión sistemática de estudios prospectivos, con un seguimiento ≥10 años, que evaluó el efecto de la pérdida de peso y los cambios de peso cíclicos con todas las causas de mortalidad. Métodos: se efectuó una búsqueda en PubMed, de artículos prospectivos, con un seguimiento > 10 años, publicados del 1 de enero de 2004 al 31 de diciembre de 2014. Resultados: nueve estudios cumplieron con los criterios de inclusión: cinco evaluaron la relación de la pérdida de peso exclusiva sobre la mortalidad, dos los cambios en el peso cíclicos y la mortalidad, y dos la pérdida de peso y los cambios en el peso cíclicos y la mortalidad. En los cinco que evaluaron la pérdida de peso, la mortalidad aumentó; en los dos que evaluaron cambios cíclicos en el peso, no se observó aumento en el riesgo de mortalidad, y en los dos que evaluaron pérdida de peso y cambios cíclicos en el peso, los cambios en el peso aumentaron el riesgo de mortalidad en ambos estudios, mientras que la pérdida de peso aumento el riesgo de mortalidad en un estudio. Conclusión: seis de los siete estudios(≥10 años de seguimiento) prospectivos mostraron que la pérdida de peso se asoció con aumento de la mortalidad; los resultados de los estudios que evaluaron cambios cíclicos de peso fueron inconsistentes. No se observaron evidencias de que la pérdida de peso aumente la esperanza de vida.

  9. Water-gas dynamics and coastal land subsidence over Chioggia Mare field, northern Adriatic Sea

    NASA Astrophysics Data System (ADS)

    Teatini, Pietro; Baú, Domenico; Gambolati, Giuseppe

    2000-09-01

    menace potentielle pour la ville de Venise, à 25 km au nord-ouest du centre de Chioggia Mare. Afin d'évaluer le risque de subsidence du sol provoquée par les prélèvements de gaz, un modèle numérique a été développé pour prévoir la compaction des formations réservoirs de gaz en même temps que celle de l'aquifère latéral et sous-jacent, par effet de drainance, sur une période de 13 ans de production, suivie de 12 ans, et pour prévoir le transfert de la compaction profonde jusqu'à la surface du sol. Afin de prendre en compte l'incertitude sur un petit nombre de paramètres hydromécaniques importants, plusieurs scénarios ont été simulés et les prévisions les plus pessimistes ont été obtenues. Les résultats de la modélisation montrent qu'on doit s'attendre, au cours des 25 ans, au plus à une subsidence du sol de 1 cm à Chioggia, tandis que Venise ne subira aucun effet. Si la baisse de l'aquifère est compensée par une injection d'eau, la subsidence du sol s'arrêtera à 5 km au large et la zone côtière de Chioggia subira un effet de 0,6 à 0,7 cm. Resumen. Recientemente, la compañía nacional italiana del petróleo, ENI-Agip, ha enviado al Ministerio de Medio Ambiente de Italia (Comité VIA) un gran programa de desarrollo de 15 campos de gas en el norte del Mar Adriático para la evaluación de su impacto medioambiental. Una de las reservas principales de gas se halla en el mar de Chioggia, a unos 10 km mar adentro de la costa veneciana, a una profundidad de entre 1.000 y 1.400 m. Se espera que la producción en este campo produzca un impacto en la estabilidad de la línea de costa, y que suponga una amenaza potencial para la ciudad de Venecia, situada a 25 km al noroeste de la explotación. Se desarrolló un modelo numérico para evaluar el riesgo de subsidencia debido a la extracción de gas a lo largo de los 13 años de producción y del período post-productivo de 12 años. Sus predicciones indican que se causará la compactación tanto

  10. What can two years of monitoring tell us about Venezuelan coral reefs? the Southern Tropical America Node of the Global Coral Reef Monitoring Network (STA-GCRMN).

    PubMed

    Cróquer, Aldo; Debrot, Denise; Klein, Eduardo; Kurten, Martina; Rodríguez, Sebastian; Bastidas, Carolina

    2010-05-01

    In spite of their economic importance, coral reef communities of the world are rapidly decreasing, and an adequate management planification is needed. The benthic and fish communities of Dos Mosquises Sur and Madrizqui at Los Roques National Park, and Caiman and Cayo Norte at Morrocoy National Park, in Venezuela were monitored during 2003 and 2004. The CARICOMP method was used to describe the benthic community, and the AGRRA protocol was applied to the fish community assessment. The benthic cover of five broad living categories (i.e. corals, algae, sponge and octocorals) differed across the sites (Nested ANOVA, p < 0.05), but there were no statistical differences between parks. Despite being on different parks, the benthic cover in Dos Mosquises Sur and Cayo Norte was similar (76% based on Bray-Curtis), whereas Caiman differed greatly (57- 68%) from all other sites. The cover of hard coral, algae, sponges and octocorals was similar between 2003 and 2004 in all four sites. Similarly, the fish community structure of both parks did not change over time, and was dominated by herbivores (Pomacentridac, Scaridae and Acanthuridae). However, commercially important carnivores (e.g. Lutjanids and Serranids) were more abundant in Los Roques than in Morrocoy. Although it was expected that the benthic cover and fish community would reflect greater differences between Los Roques and Morrocoy, only the fish community appeared healthier in Los Roques, whereas Cayo Norte (Morrocoy), had a coral cover similar or higher than both sites of Los Roques. Thus, our results suggest that in Venezuela, oceanic reef sites are not necessarily 'healthier' (i.e. higher coral cover) than land-influenced coral communities. The addition of three new sites and the reincorporation of Caiman has improved and expanded the monitoring capabilities in Venezuela and it represents the first step towards the consolidation of a coral reef monitoring program for the country.

  11. Mercury contamination of the fish community of a semi-arid and arid river system: spatial variation and the influence of environmental gradients.

    PubMed

    Smith, Alexandra; Abuzeineh, Alisa A; Chumchal, Matthew M; Bonner, Timothy H; Nowlin, Weston H

    2010-08-01

    Mercury (Hg) contamination of aquatic ecosystems is a global environmental problem. Data are abundant on Hg contamination and factors that affect its bioaccumulation in lake communities, but comparatively little information on riverine ecosystems exists. The present study examines fish Hg concentrations of the Lower Rio Grande/Rio Bravo del Norte drainage, Texas, USA and several of its major tributaries in order to assess whether spatial variation occurs in fish Hg concentrations in the drainage and if patterns of Hg contamination of fish are related to gradients in environmental factors thought to affect Hg concentrations in fish communities. Fish, invertebrates, sediments, and water quality parameters were sampled at 12 sites along the lower Rio Grande/Rio Bravo del Norte drainage multiple times over a one-year period. Spatial variation was significant in fish Hg concentrations when fish were grouped by literature-defined trophic guilds or as stable isotope-defined trophic levels, with highest concentrations found in the Big Bend region of the drainage. Mercury in fish in most trophic guilds and trophic levels were positively related to environmental factors thought to affect Hg in fish, including water column dissolved organic carbon (DOC) and sediment Hg concentrations. It is likely that fish Hg concentrations in the Big Bend region are relatively high because this section of the river has abundant geologic Hg sources and environmental conditions which may make it sensitive to Hg inputs (i.e., high DOC, variable water levels). Results from the present study indicate that Hg contamination of the Rio Grande/Rio Bravo del Norte has substantial implications for management and protection of native small-bodied obligate riverine fish, many of which are imperiled. PMID:20821630

  12. Effects of SPAK knockout on sensorimotor gating, novelty exploration, and brain area-dependent expressions of NKCC1 and KCC2 in a mouse model of schizophrenia.

    PubMed

    Yang, Sung-Sen; Huang, Chuen-Lin; Chen, Huei-E; Tung, Che-Se; Shih, Han-Peng; Liu, Yia-Ping

    2015-08-01

    SPAK (Sterile 20/SPS1-related proline/alanine-rich kinase) is a protein kinase belonging to the mitogen-activated protein kinase (MAPK) superfamily that has been found to be extensively distributed across the body. The SPAK downstream substrates NKCC1 and KCC2 in the central nervous system are important in the interpretation of developmental mental disorders. The present study aimed to clarify the role of SPAK-NKCC1/KCC2 using a rodent schizophrenia-like model. The mouse paradigm of isolation rearing (IR) was employed, as it simulates the sensorimotor gating abnormalities of schizophrenia. SPAK transgenic mice were used and were divided into four groups: social-wild type, social-SPAK(-/-), isolation-wild type, and isolation-SPAK(-/-). The prepulse inhibition (PPI) test and the novel object recognition test (NORT) were used to measure schizophrenia-associated dysfunctions in gating ability and the novelty recognition, respectively. Finally, the protein expressions of NKCC1/KCC2 in the prefrontal cortex and hippocampus were detected to determine correlations with the behavioral data. Our results demonstrated that SPAK-null mice had superior PPI and novelty recognition relative to wild type controls, with a concomitant increase in KCC2 in the prefrontal cortex. IR disrupted PPI and NORT performances with an associated increase in KCC2. Furthermore, rearing environment and gene manipulation had mutually interactive effects, as the IR-induced effects on PPI and NORT were reversed by SPAK knockout, and the increase in KCC2 and the decreased in the NKCC1/KCC2 ratio in the prefrontal cortex induced by SPAK knockout were reversed by IR. Our data supported the gene-environment hypothesis and demonstrated the potential value of SPAK manipulation in future schizophrenia studies. PMID:25797415

  13. Mercury contamination of the fish community of a semi-arid and arid river system: spatial variation and the influence of environmental gradients.

    PubMed

    Smith, Alexandra; Abuzeineh, Alisa A; Chumchal, Matthew M; Bonner, Timothy H; Nowlin, Weston H

    2010-08-01

    Mercury (Hg) contamination of aquatic ecosystems is a global environmental problem. Data are abundant on Hg contamination and factors that affect its bioaccumulation in lake communities, but comparatively little information on riverine ecosystems exists. The present study examines fish Hg concentrations of the Lower Rio Grande/Rio Bravo del Norte drainage, Texas, USA and several of its major tributaries in order to assess whether spatial variation occurs in fish Hg concentrations in the drainage and if patterns of Hg contamination of fish are related to gradients in environmental factors thought to affect Hg concentrations in fish communities. Fish, invertebrates, sediments, and water quality parameters were sampled at 12 sites along the lower Rio Grande/Rio Bravo del Norte drainage multiple times over a one-year period. Spatial variation was significant in fish Hg concentrations when fish were grouped by literature-defined trophic guilds or as stable isotope-defined trophic levels, with highest concentrations found in the Big Bend region of the drainage. Mercury in fish in most trophic guilds and trophic levels were positively related to environmental factors thought to affect Hg in fish, including water column dissolved organic carbon (DOC) and sediment Hg concentrations. It is likely that fish Hg concentrations in the Big Bend region are relatively high because this section of the river has abundant geologic Hg sources and environmental conditions which may make it sensitive to Hg inputs (i.e., high DOC, variable water levels). Results from the present study indicate that Hg contamination of the Rio Grande/Rio Bravo del Norte has substantial implications for management and protection of native small-bodied obligate riverine fish, many of which are imperiled.

  14. Effects of SPAK knockout on sensorimotor gating, novelty exploration, and brain area-dependent expressions of NKCC1 and KCC2 in a mouse model of schizophrenia.

    PubMed

    Yang, Sung-Sen; Huang, Chuen-Lin; Chen, Huei-E; Tung, Che-Se; Shih, Han-Peng; Liu, Yia-Ping

    2015-08-01

    SPAK (Sterile 20/SPS1-related proline/alanine-rich kinase) is a protein kinase belonging to the mitogen-activated protein kinase (MAPK) superfamily that has been found to be extensively distributed across the body. The SPAK downstream substrates NKCC1 and KCC2 in the central nervous system are important in the interpretation of developmental mental disorders. The present study aimed to clarify the role of SPAK-NKCC1/KCC2 using a rodent schizophrenia-like model. The mouse paradigm of isolation rearing (IR) was employed, as it simulates the sensorimotor gating abnormalities of schizophrenia. SPAK transgenic mice were used and were divided into four groups: social-wild type, social-SPAK(-/-), isolation-wild type, and isolation-SPAK(-/-). The prepulse inhibition (PPI) test and the novel object recognition test (NORT) were used to measure schizophrenia-associated dysfunctions in gating ability and the novelty recognition, respectively. Finally, the protein expressions of NKCC1/KCC2 in the prefrontal cortex and hippocampus were detected to determine correlations with the behavioral data. Our results demonstrated that SPAK-null mice had superior PPI and novelty recognition relative to wild type controls, with a concomitant increase in KCC2 in the prefrontal cortex. IR disrupted PPI and NORT performances with an associated increase in KCC2. Furthermore, rearing environment and gene manipulation had mutually interactive effects, as the IR-induced effects on PPI and NORT were reversed by SPAK knockout, and the increase in KCC2 and the decreased in the NKCC1/KCC2 ratio in the prefrontal cortex induced by SPAK knockout were reversed by IR. Our data supported the gene-environment hypothesis and demonstrated the potential value of SPAK manipulation in future schizophrenia studies.

  15. The Use of Radiation Therapy Appears to Improve Outcome in Patients With Malignant Primary Tracheal Tumors: A SEER-Based Analysis

    SciTech Connect

    Xie Liyi; Fan Min; Sheets, Nathan C.; Chen, Ronald C.; Jiang, Guo-Liang; Marks, Lawrence B.

    2012-10-01

    Purpose: To conduct a matched pair analysis assessing the impact of radiotherapy (RT) in patients with resectable and unresectable primary malignant tracheal tumors using Surveillance, Epidemiology and End Results (SEER) database. Patients and Methods: The SEER registry was used to identify every patient (or 'case') who received RT between 1988 and 2007 for primary malignant tracheal tumors, and to search for corresponding 'controls' (not treated with RT), with the same prognostic and treatment factors (surgery on the trachea, disease extension, histology, and gender). Overall survival (OS) was calculated with the Kaplan-Meier methods. Results of OS and cumulative incidence of death from tracheal cancer in the cases and controls, and in various subsets, were compared using log-rank and Gray's tests. Results: Two hundred fifty-eight patients who received RT were identified, and 78 of these had appropriate matched controls identified, forming the basis of this analysis. In the 78 (+RT) cases, the median follow-up was 60 months (range, 10-192) in the survivors vs. 55 months (range, 2-187) in the controls (no-RT group). Patients in RT group had significantly better OS, and a lower cumulative incidence of death from tracheal cancer than no-RT patients (p < 0.05). Treatment with radiation was associated with improved survival in patients with squamous cell histology [p < 0.0001], regional disease extension [p = 0.030], or those that did not undergo resection [p = 0.038]. There were four deaths in RT group and three in no-RT group attributed to cardiac and respiratory causes. Conclusion: Our data suggest a survival benefit for the use of RT broadly for all patients with tracheal cancer. Nevertheless, the retrospective nature of this observational study limits its interpretation.

  16. A new genus and a new species of Sminthuridae (Collembola: Symphypleona) from Atlantic Forest of Brazil.

    PubMed

    Da Silva, Diego Dias; Palacios-Vargas, José G; Bellini, Bruno Cavalcante

    2015-01-01

    Sminthuridae comprises approximately 240 species distributed worldwide. In Brazil it is represented only by 11 species and four genera. Herein we describe a new genus and species of subfamily Sminthurinae from Atlantic Forest of Rio Grande do Norte State, Northeastern Brazil. The new described genus is similar to Gisinurus, Songhaica, Dietersminthurus and Soqotrasminthurus, especially in its unguis shape, with open cavity; but differs from all other genera of Sminthuridae by the presence of a single pretarsal chaeta in anterior side, smooth mucronal edges and a unique head chaetotaxy. PMID:26250241

  17. Recent Tsunami Highlights Need for Awareness of Tsunami Duration

    NASA Astrophysics Data System (ADS)

    Kelly, Annabel; Dengler, Lori A.; Uslu, Burak; Barberopoulou, Aggeliki; Yim, Solomon C.; Bergen, Kristian J.

    2006-12-01

    On Wednesday, 15 November 2006, Crescent City Harbor, in Del Norte County, Calif., was hit by surges resulting from the tsunami generated by the Mw=8.3 Kuril Islands earthquake. The strong currents caused an estimated US $700,000 to $1 million in losses to the small boat basin at Citizen's Dock, destroying or damaging three floating docks and causing minor damage to several boats (Figure 1). The event highlighted a persistent problem for tsunami hazard mitigation: Most people are still unaware that the first tsunami waves rarely are the largest and that the potential for damaging waves may last for many hours.

  18. [Serologic survey of dogs in an endemic area of tegumentary leishmaniasis in Paraná State, southern Brazil

    PubMed

    Silveira; Teodoro; Lonardoni; Toledo; Bertolini; Arraes; Vedovello Filho D

    1996-01-01

    Increased reporting of mucocutaneous leishmaniasis in the State of Paraná points to the need for information on both this disease's epidemiology and pertinent control measures. A serological survey was thus performed, with indirect immunofluorescence (IIF) for canine leishmaniasis in farm operations belonging to the Companhia Melhoramentos Norte do Paraná, in Jussara and Terra Boa counties, in northwestern Paraná. IIF was performed on 132 dogs, of which 24 (18.2%) had significant titers (>/=40). Imprints of six dogs with lesions were made and all were negative for Leishmania sp.

  19. Stratigraphy of the Santa Cruz area. Export trade information

    SciTech Connect

    Not Available

    1991-05-01

    The report documents the results of a feasibility study which addressed the viability of developing petroleum areas in Bolivia. The objective of the report, volume 3 of 4, was to use both geologic modeling and seismic analysis to study the structures and stratigraphy of the specified oil fields to develop a regional picture to be used with sufficient certainty to drill stepout wells and explore for additional hydrocarbon producing structures. Along with the Introduction, Summary, Conclusions, and Recommendations, the report discusses the Scope of Work, Objective, Geologic Setting, and the Seismic Stratigraphy for the following fields: Montecristo, La Pena, Rio Grande Norte, and Santa Cruz.

  20. A new genus and a new species of Sminthuridae (Collembola: Symphypleona) from Atlantic Forest of Brazil.

    PubMed

    Da Silva, Diego Dias; Palacios-Vargas, José G; Bellini, Bruno Cavalcante

    2015-07-27

    Sminthuridae comprises approximately 240 species distributed worldwide. In Brazil it is represented only by 11 species and four genera. Herein we describe a new genus and species of subfamily Sminthurinae from Atlantic Forest of Rio Grande do Norte State, Northeastern Brazil. The new described genus is similar to Gisinurus, Songhaica, Dietersminthurus and Soqotrasminthurus, especially in its unguis shape, with open cavity; but differs from all other genera of Sminthuridae by the presence of a single pretarsal chaeta in anterior side, smooth mucronal edges and a unique head chaetotaxy.

  1. A brief botanical survey into Kumbira forest, an isolated patch of Guineo-Congolian biome

    PubMed Central

    Gonçalves, Francisco M. P.; Goyder, David J.

    2016-01-01

    Abstract Kumbira forest is a discrete patch of moist forest of Guineo-Congolian biome in Western Angola central scarp and runs through Cuanza Norte and Cuanza Sul province. The project aimed to document the floristic diversity of the Angolan escarpment, a combination of general walk-over survey, plant specimen collection and sight observation was used to aid the characterization of the vegetation. Over 100 plant specimens in flower or fruit were collected within four identified vegetation types. The list of species includes two new records of Guineo-Congolian species in Angola, one new record for the country and one potential new species. PMID:27489484

  2. PREVALENCE OF CHAGAS DISEASE IN A RURAL AREA IN THE STATE OF CEARA, BRAZIL

    PubMed Central

    FREITAS, Erlane Chaves; OLIVEIRA, Maria de Fátima; ANDRADE, Mônica Coelho; VASCONCELOS, Arduina Sofia Ortet de Barros; da SILVA, José Damião; CÂNDIDO, Darlan da Silva; PEREIRA, Laíse dos Santos; CORREIA, João Paulo Ramalho; da CRUZ, José Napoleão Monte; CAVALCANTI, Luciano Pamplona de Góes

    2015-01-01

    SUMMARY Chagas disease is caused by Trypanosoma cruzi and affects about two to three million people in Brazil, still figuring as an important public health problem. A study was conducted in a rural area of the municipality of Limoeiro do Norte - CE, northeastern Brazil, aiming to determine the prevalence of T. cruzi infection. Of the inhabitants, 52% were examined, among whom 2.6% (4/154) were seropositive in at least two serological tests. All seropositive individuals were older than 50 years, farmers, with a low education and a family income of less than three minimum wages. Active surveillance may be an alternative for early detection of this disease. PMID:26603232

  3. Heritability of aerobic power of individuals in northeast Brazil.

    PubMed

    Alonso, L; Souza, Ec; Oliveira, Mv; do Nascimento, Lfe; Dantas, Pms

    2014-12-01

    The objective of this study was to evaluate the genetic and environmental contribution to variation in aerobic power in monozygotic (MZ) and dizygotic (DZ) twins. The sample consisted of 20 MZ individuals (12 females and 8 males) and 16 DZ individuals (12 females and 4 males), aged from 8 to 26 years, residents in Natal, Rio Grande do Norte. The twins were assessed by a multistage fitness test. The rate of heritability found for aerobic power was 77%. Based on the results, the estimated heritability was largely responsible for the differences in aerobic power. This implies that such measures are under strong genetic influence.

  4. Niebla ceruchis from Laguna Figueroa: dimorphic spore morphology and secondary compounds localized in pycnidia and apothecia.

    PubMed

    Enzien, M; Margulis, L

    1988-01-01

    During and after the floods of 1979-80 Niebla ceruchis growing epiphytically on Lycium brevipes was one of the dominant aspects of the vegetation in the coastal dunal complex bordering the microbial mats at Laguna Figueroa, Baja California Norte, Mexico. The lichen on denuded branches of Lycium was far more extensively distributed than Lycium lacking lichen. Unusual traits of this Niebla ceruchis strain, namely localization of lichen compounds in the mycobiont reproductive structures (pycnidia and apothecia) and simultaneous presence of bilocular and quadrilocular ascospores, are reported. The abundance of this coastal lichen cover at the microbial mat site has persisted through April 1988.

  5. Niebla ceruchis from Laguna Figueroa: dimorphic spore morphology and secondary compounds localized in pycnidia and apothecia

    NASA Technical Reports Server (NTRS)

    Enzien, M.; Margulis, L.

    1988-01-01

    During and after the floods of 1979-80 Niebla ceruchis growing epiphytically on Lycium brevipes was one of the dominant aspects of the vegetation in the coastal dunal complex bordering the microbial mats at Laguna Figueroa, Baja California Norte, Mexico. The lichen on denuded branches of Lycium was far more extensively distributed than Lycium lacking lichen. Unusual traits of this Niebla ceruchis strain, namely localization of lichen compounds in the mycobiont reproductive structures (pycnidia and apothecia) and simultaneous presence of bilocular and quadrilocular ascospores, are reported. The abundance of this coastal lichen cover at the microbial mat site has persisted through April 1988.

  6. [Labor migration to the United States by natives from the State of Mexico].

    PubMed

    Gonzalez Becerril, J G

    1998-01-01

    Based primarily on data from the Encuesta sobre Migracion en la Frontera Norte de Mexico, results of a study of international migration from the Mexican state of Mexico to the United States over time are presented The author notes that from 1942 to 1964, labor migration between the two countries was organized under an agreement between the two governments concerned. However, since that agreement ended, an increasing volume of illegal labor migration has occurred in response to the economic situation. Attention is given to migrant characteristics, the characteristics of illegal immigrants deported back to Mexico, and migrant remittances.

  7. [The remittances in U.S. dollars that Mexican migrants send home from the United States (a study based on data from the Survey of Migration in the Northern Frontier Region of Mexico)].

    PubMed

    Corona Vasquez, R

    1998-01-01

    The difficulties in obtaining reliable data on remittances to Mexico by Mexican immigrants in the United States are first outlined. An analysis of such remittances is then attempted using data from a recent survey, the Encuesta sobre Migracion en la Frontera Norte. Data from this survey are used to analyze several aspects of remittances "such as the direct determination of the amount of the remittances and the identification of the immigrants that send them according to their social and demographic features, and the location of Mexican zones where the remittances arrive, [and] the variations in the amount and frequency of the remittances among the different groups of immigrants." (EXCERPT)

  8. [Migration to the northern frontier of Mexico and its relationship with the regional labor market].

    PubMed

    Anguiano Tellez, M E

    1998-01-01

    "This document tries to show the close relationship between the recent population growth in the northern border cities of Mexico and the dynamic demand of the regional market labor. First, it analyzes the evolution of demographic growth and the development of economic activities, in the Mexican borders in urban towns, then it reviews the data from the survey called Encuesta sobre Migracion en la Frontera Norte de Mexico in order to explore the connection between the regional labor market characteristics and the internal and international migration flows." (EXCERPT)

  9. Three new species of Eurypon Gray, 1867 from Northeastern Brazil (Poecilosclerida; Demospongiae; Porifera).

    PubMed

    Santos, George Garcia; França, Fernando; Pinheiro, Ulisses

    2014-12-15

    Three new species of Eurypon from Northeastern Brazil are described: Eurypon clavilectuarium sp. nov.; Eurypon suassunai sp. nov. and Eurypon distyli sp. nov. Samples were collected from the continental shelf of Rio Grande do Norte, Bahia and Paraíba States. While the majority of Atlantic Eurypon species have been described from deep water, two of three new species described in this study were collected from shallow depths. The three new species from Brazil were compared with all other eighteen Eurypon species described from the Atlantic. 

  10. A brief botanical survey into Kumbira forest, an isolated patch of Guineo-Congolian biome.

    PubMed

    Gonçalves, Francisco M P; Goyder, David J

    2016-01-01

    Kumbira forest is a discrete patch of moist forest of Guineo-Congolian biome in Western Angola central scarp and runs through Cuanza Norte and Cuanza Sul province. The project aimed to document the floristic diversity of the Angolan escarpment, a combination of general walk-over survey, plant specimen collection and sight observation was used to aid the characterization of the vegetation. Over 100 plant specimens in flower or fruit were collected within four identified vegetation types. The list of species includes two new records of Guineo-Congolian species in Angola, one new record for the country and one potential new species. PMID:27489484

  11. Characterization of aerosol particles from Buenos Aires City and its subway system: PIXE and SEM/EDX

    SciTech Connect

    Murruni, L. G.; Debray, M. E.; Minsky, D.; Kreiner, A. J.; Burlon, A.; Davidson, M.; Davidson, J.; Ozafran, M.; Vazquez, M. E.; Rosenbusch, M.; Ulke, A. G.; Solanes, V.

    2007-02-12

    This study analyzes total suspended particle (TSP) samples collected at two sites of Buenos Aires City (34S, 58W). One site (San Martin) placed 17 km from city center, and the other one at an underground subway station (Diagonal Norte) in downtown Buenos Aires. In both cases, gravimetric analysis has been performed, while elemental analysis using PIXE has been only carried out in the first case. To the best our knowledge, this is the first airborne particle measurement perform at a Buenos Aires underground subway station.

  12. Impacts of Grownd water-over exploitation on agricultural development and Environment in north-west Libya (Garabolli area) using R.S and GIS

    NASA Astrophysics Data System (ADS)

    Shbeli, E.

    2003-04-01

    This study was carried out in Garabolli area nort-west of Libya which is east of Tripoli about 60km. This study reviews the development of grownd water abstraction in the area and displays its impacts on the aquifer water levels and salinity. Satellite data were used to produce land use land cover and soil maps scale 1:50000. Each soil mapping units investigated in the field and the soils were characterized and classified. The comparison between 2 different dates spot multispectral images were applied in this paper. GIS techniques were used to produce different maps and some statistics tables shows in the report.

  13. The VLT Opening Symposium

    NASA Astrophysics Data System (ADS)

    Bergeron, J.

    1999-06-01

    The beginning of the VLT era was marked by two major events: the VLT Official Inauguration Ceremony at Paranal on 5 March 1999, preceded by the VLT Opening Symposium on 1-4 March. ESO is indebted to Professor J.A. Music Tomicic, Rector of the Universidad Católica del Norte, for hosting this symposium. Another major event occurred on the night of 4 March: First light was achieved ahead of schedule at Kueyen, the second 8.2-m VLT unit telescope.

  14. [Disciplinary Actions in Gynecology and Obstetrics in the North of Portugal from Year 2008 to 2012].

    PubMed

    Silva, Francisco; Rodrigues E Rodrigues, Manuel; Bernardes, João

    2015-01-01

    Introdução: As ações disciplinares podem ter um impacto significativo na vida dos médicos e dos doentes. O objetivo deste trabalho foi a avaliação das ações disciplinares em Ginecologia e Obstetrícia ocorridas na região norte de Portugal nos anos 2008 a 2012.Material e Métodos: Estudo descritivo retrospetivo baseado nos dados anonimizados disponíveis nos relatórios anuais de atividades do Conselho Disciplinar da Seção Regional Norte da Ordem dos Médicos dos anos 2008 a 2012. Calculámos a proporção de ações disciplinares em Ginecologia e Obstetrícia sobre o número total de especialistas inscritos. Avaliámos também os tipos de queixoso, de arguido, de instituição, de queixa e de decisão envolvidos. Para comparação de proporções utilizámos intervalos de confiança de 95%.Resultados: De 2008 a 2012, registou-se um total de 1040 ações disciplinares na região norte de Portugal. A Ginecologia e Obstetrícia foi a quarta especialidade mais afetada, com 54 queixas, 43 das quais relacionadas com alegada negligência médica e a mais afetada, se considerarmos apenas este tipo de queixa. Os queixosos e os arguidos mais frequentes foram, respetivamente, doentes em nome próprio e profissionais do sexo feminino, com idade compreendida entre os 41 e 60 anos. Das 54 ações disciplinares registadas, 52 foram concluídas sem penalização e duas aguardam decisão.Discussão: Os resultados estão genericamente de acordo com os de outros autores.Conclusões: A Ginecologia e Obstetrícia foi a quarta especialidade com maior risco de ação disciplinar na região norte de Portugal nos anos 2008 a 2012 e a primeira se considerarmos só as queixas de alegada negligência médica. Todas as ações disciplinares foram arquivadas, sem penalização dos médicos visados, com exceção de duas que se encontram ainda em avaliação.

  15. Differential measurement of cosmic-ray gradient with respect to interplanetary current sheet

    NASA Technical Reports Server (NTRS)

    Christon, S. P.; Cummings, A. C.; Stone, E. C.; Behannon, K. W.; Burlaga, L. F.

    1985-01-01

    Simultaneous magnetic field and charged particle measurements from the Voyager spacecraft at heliographic latitude separations from 10 deg. to 21 deg. are used to determine the latitude gradient of the galactic cosmic ray flux with respect to the interplanetary current sheet. By comparing the ratio of cosmic ray flux at Voyager 1 to that a Voyager 2 during periods when both spacecraft are first nort and then south of the interplanetary current sheet, we find an estimate of the latitudinal gradient with respect to the current sheet of approximately -0.15 + or 0.05% deg under restricted interplanetary conditions.

  16. Progresos recientes en Astronomía de Rayos Gamma

    NASA Astrophysics Data System (ADS)

    Romero, G. E.

    Tras la exitosa misión del Compton Gamma-Ray Observatory durante los años 1990, la astronomía de rayos gamma ha entrado en una etapa de madurez, convirtiéndose en una de las principales herramientas para el estudio de procesos relativistas en el universo. En este reporte, presentaré una revisión de los principales tópicos abordados a través de estudios con rayos gamma en los últimos años, con particular énfasis en los intentos más recientes por establecer la naturaleza de las fuentes de rayos gamma no identificadas, detectadas por el instrumento EGRET.

  17. NASA Astrophysics Data System (ADS)

    Brunini, A.

    Se presenta una revisión de los conocimientos actuales sobre el proceso de acreción del sistema solar exterior. En base a nuevas y más realistas simulaciones numéricas, se analiza el impacto que tuvo dicho proceso en otras regiones del sistema solar tales como la nube de Oort, el cinturón de Kuiper y el sistema solar interior. Se presentan entonces, las principales limitaciones de los modelos numéricos actuales, los principales puntos aún oscuros en el problema, y algunos de los posibles caminos a seguir para mejorar nuestro conocimiento en el tema. Se discute a continuación la posible utilidad de este tipo de estudios para el diseño de estrategias de búsqueda de otros sistemas planetarios.

  18. El Informe a la Nación sobre el Estado del Cáncer, 1975-2012

    Cancer.gov

    El Informe a la Nación sobre el Estado del Cáncer (1975-2012) indica que continuó la baja de tasas de mortalidad de todos los cánceres juntos, así como de la mayoría de los cánceres en hombres y mujeres de todos los grupos raciales y étnicos principales.

  19. El medio interestelar alrededor de estrellas Of: HD 108

    NASA Astrophysics Data System (ADS)

    Cappa, C.; Testori, J. C.

    Hemos analizado la distribución del hidrógeno neutro interestelar en la vecindad de la estrella Of HD 108 en base a perfiles de la línea de 21 cm. Estos datos nos han permitido encontrar una probable burbuja interestelar asociada a la estrella. Comparamos estos resultados con la emisión en otros rangos espectrales y estimamos los principales parámetros físicos de la estructura.

  20. Analisis del contenido curricular de los Documentos Normativos del Programa de Ciencias en el area de biologia para la escuela superior del sistema de educacion publica de Puerto Rico: 1993-2012

    NASA Astrophysics Data System (ADS)

    Davila Montanez, Melissa

    Esta investigacion de naturaleza cualitativa se ocupo de realizar un analisis de contenido documental de los Documentos Normativos del Programa de Ciencias en el area de biologia de la escuela superior del sistema de educacion publica de Puerto Rico del periodo 1993-2012. Los documentos analizados fueron: Guia Curricular, 1995; Marco Curricular, 2003; Estandares de Excelencia, 1996, 2000 y Estandares de Contenido y Expectativas de Grado, 2007. Se indago si hubo cambios en significados en los Componentes Estructurales: Naturaleza de la ciencia, Paradigmas para la ensenanza de la ciencia, Funcion del curriculo formal, Mision de la ensenanza de la ciencia; Contenidos, destrezas y competencias, Estrategias de ensenanza y Evaluacion/Assessment del aprendizaje. El analisis sugiere que no hubo cambios sustanciales en los significados de los Componentes Estructurales. Los documentos estudiados muestran mayormente caracteristicas similares, aunque los documentos mas recientes eran mas descriptivos, explicativos y especificos.

  1. [Santiago Ramón y Cajal and Ivan Petrovich Pavlov: does complementarity exist between their theories?].

    PubMed

    Rozo, Jairo A; Rodríguez-Moreno, Antonio

    2015-08-01

    Introduccion. Pocos autores han comparado la vida y obra de Cajal y Pavlov, y, cuando lo hacen, se refieren generalmente a su coincidencia en el XIV Congreso Internacional de Medicina que tuvo lugar en Madrid en 1903. Objetivo. Presentar los modelos teoricos de ambos autores para estudiar la posible complementariedad entre sus teorias. Desarrollo. Se presentan las principales caracteristicas de la teoria neuronal de Cajal, la teoria reticular que le antecedio, los principales resultados de las investigaciones de Cajal y las aportaciones que brindo al concepto de plasticidad. En cuanto a la teoria de los reflejos condicionales de Pavlov, se describen sus principales postulados, las leyes pavlovianas y la tipologia del sistema nervioso segun Pavlov. Conclusiones. Los niveles de organizacion en los que trabajan Cajal y Pavlov se pueden entender como complementarios si tenemos en cuenta la propuesta de Henry Wallon o las de marcos epistemologicos como la epistemologia estrategica, donde el avance de la ciencia se logra desde estrategias diferentes, pero complementarias, que ayudan a construir modelos teoricos mas fuertes.

  2. [Effectiveness of educational interventions conducted in latin america for the prevention of overweight and obesity in scholar children from 6-17 years old; a systematic review].

    PubMed

    Mancipe Navarrete, Jenny Alejandra; Garcia Villamil, Shanen Samanta; Correa Bautista, Jorge Enrique; Meneses-Echávez, José Francisco; González-Jiménez, Emilio; Schmidt Rio-Valle, Jacqueline

    2014-10-03

    Introducción: El sobrepeso y la obesidad representan un serio problema de salud pública, de orden creciente en la población infantil. Objetivo: Determinar la efectividad de las intervenciones educativas realizadas en América Latina para la prevención del sobrepeso y la obesidad en niños escolares de 6 a 17 años. Metodología: Las bases de datos MEDLINE, LILACS y EMBASE fueron consultadas entre febrero y mayo de 2014 para identificar estudios controlados aleatorizados y estudios longitudinales que evaluaran los efectos de intervenciones educativas dirigidas a la prevención del sobrepeso y la obesidad en niños latinoamericanos. El riesgo de sesgo y la calidad metodológica se evaluó con la escala de PEDro y el instrumento CASPe. Resultados: Veintiún estudios fueron incluidos (n=12,092). Se identificaron diferentes tipos de intervenciones, tales como estrategias nutricionales, promoción de la práctica de actividad física y cambios en el entorno. Las intervenciones mixtas, que combinaron cambios nutricionales con la promoción de actividad física, fueron las más efectivas, pues sus resultados evidenciaron cambios positivos en las variables asociadas al sobrepeso y obesidad infantil. No se observaron evidencias de sesgo de publicación. Conclusión: Las intervenciones realizadas en el ámbito escolar que combinan la nutrición adecuada y la promoción de la práctica de actividad física son efectivas en la prevención del sobrepeso y la obesidad infantil en escolares latinoamericanos, aunque se deben incorporar intervenciones en el ambiente familiar para permitir un abordaje integral, asociado con mayores respuestas sobre el cambio comportamental de los escolares.

  3. Is pentoxifylline effective in alcoholic hepatitis? –First update.

    PubMed

    Rada, Gabriel; Arteaga, Matías; Candia, Roberto

    2016-06-14

    ACERCA DE LA ACTUALIZACIÓN: Este resumen Epistemonikos (Living FRISBEE: Living FRIendly Summary of the Body of Evidence using Epistemonikos) es una actualización del resumen publicado en Junio de 2014. Incorpora una nueva revisión sistemática que identificó un estudio no incluido en las revisiones previas. La incorporación de esta nueva evidencia lleva a cambios sustantivos en la evidencia existente.

  4. Reorganization of nutritional therapy can markedly reduce the rate of catheter-related blood stream infections in pediatric patients receiving parenteral nutrition - a 7-year prospective follow-up study.

    PubMed

    Szlagatys-Sidorkiewicz, Agnieszka; Borkowska, Anna; Jankowska, Agnieszka; Sroka, Mariusz; Zagierski, Maciej; Gosk, Anna; Słomińska-Frączek, Magdalena; Bogowski, Grzegorz; Plata-Nazar, Katarzyna; Sznurkowska, Katarzyna; Krzykowski, Grzegorz; Kamińska, Barbara

    2014-12-16

    Antecedentes: La implementación de medidas higiénicas y cambios sencillos en la estructura del personal médico puede reducir considerablemente la tasa de bacteriemia asociada al catéter (BAC) en pacientes que reciben nutrición parenteral. Objetivo: Analizar el impacto de los cambios organizacionales dentro de los servicios de nutrición parenteral sobre las tasas de BAC en pacientes pediátricos. Métodos: Hemos comparado las tasas de BAC documentadas antes, durante y después de la implementación de los cambios organizacionales (introducción de un grupo de apoyo nutricional y los procedimientos relacionados, formación del personal médico). Descubrimientos: Un total de 260 series de nutrición parenteral fueron ofrecidos a 141 pacientes pediátricos durante el periodo analizado. Se documentaron treinta BAC durante este periodo. Los factores etiológicos más frecuentes eran staphylococci (21/30), seguidos por Klebsiella pneumoniae, Escherichia coli y Candida albicans (2/30 cada uno). Los cambios organizacionales fueron reflejados en una reducción de la incidencia de BAC en más de 8 veces: el valor inicial disminuyó desde 10.14 hasta 6.89 por 1000 días-catéter y hasta 1.17 por 1000 días-catéter durante y después de la reorganización, respectivamente. Conclusión: La introducción de un grupo de apoyo nutricional, acompañada de una extensa formación del personal médico puede resultar en una reducción considera ble de la tasa de BAC en pacientes pediátricos que reciben nutrición parenteral en en un entorno hospitalario.

  5. Termites as bioindicators of habitat quality in the caatinga, Brazil: is there agreement between structural habitat variables and the sampled assemblages?

    PubMed

    Alves, W de F; Mota, A S; Lima, R A A de; Bellezoni, R; Vasconcellos, A

    2011-01-01

    The composition of termite assemblages was analyzed in three caatinga sites of the Estação Ecológica do Seridó, located in the municipality of Serra Negra do Norte, in the state of Rio Grande do Norte, Brazil. These sites have been subjected to selective logging, and cleared for pasture and farming. A standardized sampling protocol for termite assemblages (30h/person/site) was conducted between September 2007 and February 2009. At each site we measured environmental variables, such as soil pH and organic matter, necromass stock, vegetation height, stem diameter at ankle height (DAH) and the largest and the smallest crown width. Ten species of termites, belonging to eight genera and three families, were found at the three experimental sites. Four feeding groups were sampled: wood-feeders, soil-feeders, wood-soil interface feeders and leaf-feeders. The wood-feeders were dominant in number of species and number of encounters at all sites. In general, the sites were not significantly different in relation to the environmental variables measured. The same pattern was observed for termite assemblages, where no significant differences in species richness, relative abundance and taxonomic and functional composition were observed between the three sites. The agreement between composition of assemblages and environmental variables reinforces the potential of termites as biological indicators of habitat quality. PMID:21437481

  6. Wind modeling of Chihuahuan Desert dust outbreaks

    NASA Astrophysics Data System (ADS)

    Rivera Rivera, Nancy I.; Gill, Thomas E.; Gebhart, Kristi A.; Hand, Jennifer L.; Bleiweiss, Max P.; Fitzgerald, Rosa M.

    The Chihuahuan Desert region of North America is a significant source of mineral aerosols in the Western Hemisphere, and Chihuahuan Desert dust storms frequently impact the Paso del Norte (El Paso, USA/Ciudad Juarez, Mexico) metropolitan area. A statistical analysis of HYSPLIT back trajectory residence times evaluated airflow into El Paso on all days and on days with synoptic (non-convective) dust events in 2001-2005. The incremental probability—a measure of the areas most likely to have been traversed by air masses arriving at El Paso during dusty days—was only strongly positively associated with the region west-southwest of the city, a zone of known dust source areas. Focused case studies were made of major dust events on 15 April and 15 December 2003. Trajectories approached the surface and MM5 (NCAR/Penn State Mesoscale Model) wind speeds increased at locations consistent with dust sources observed in satellite imagery on those dates. Back trajectory and model analyses suggested that surface cyclones adjacent to the Chihuahuan Desert were associated with the extreme dust events, consistent with previous studies of dust storms in the Southern High Plains to the northeast. The recognition of these meteorological patterns serves as a forecast aid for prediction of dust events likely to impact the Paso del Norte.

  7. New records and human parasitism by Ornithodoros mimon (Acari: Argasidae) in Brazil.

    PubMed

    Labruna, Marcelo B; Marcili, Arlei; Ogrzewalska, Maria; Barros-Battesti, Darci M; Dantas-Torres, Filipe; Fernandes, André A; Leite, Romario C; Venzal, Jose M

    2014-01-01

    The bat tick Ornithodoros mimon Kohls, Clifford & Jones is currently known by only few reports in Bolivia, Uruguay, Argentina, and the state of São Paulo in southeastern Brazil. Here, we expand the distribution of O. mimon in Brazil to the states of Minas Gerais (southeastern region), Goiás (central-western), Pernambuco, and Rio Grande do Norte (northeastern). Ticks were collected on human dwellings, where there had been repeated complains of tick bites on persons during the night. Tick bites were generally followed by intense inflammatory reactions that lasted for several weeks at the bite site. Bats and opossums were reported to inhabit the attic of the infested houses. In addition, a free-ranging opossum (Didelphis albiventris Lund) trapped in Rio Grande do Norte was found infested by argasid larvae. Based on morphological and/or molecular analysis, all ticks were identified as O. mimon. From one of the sites (Tiradentes, state of Minas Gerais), 20 field-collected nymphs were tested by a battery of polymerase chain reaction protocols targeting tick-borne microorganisms of the genera Babesia, Hepatozoon, Rickettsia, Borrelia, Anaplasma, Ehrlichia, and Coxiella; no tick specimen was found infected by any of these microorganism genera. The current study expands northwards the distribution of O. mimon, which has been shown to be very harmful to humans because of the intense inflammatory response that usually occurs after tick bites. PMID:24605480

  8. Winter season air pollution in El Paso-Ciudad Juarez. A review of air pollution studies in an international airshed

    SciTech Connect

    Einfeld, W.; Church, H.W.

    1995-03-01

    This report summarizes a number of research efforts completed over the past 20 years in the El Paso del Norte region to characterize pollution sources and air quality trends. The El Paso del Norte region encompasses the cities of El Paso, Texas and Ciudad Juarez, Chihuahua and is representative of many US-Mexico border communities that are facing important air quality issues as population growth and industrialization of Mexican border communities continue. Special attention is given to a group of studies carried out under special US Congressional funding and administered by the US Environmental Protection Agency. Many of these studies were fielded within the last several years to develop a better understanding of air pollution sources and trends in this typical border community. Summary findings from a wide range of studies dealing with such issues as the temporal and spatial distribution of pollutants and pollution potential from both stationary and mobile sources in both cities are presented. Particular emphasis is given to a recent study in El Paso-Ciudad Juarez that focussed on winter season PM{sub 10} pollution in El Paso-Ciudad Juarez. Preliminary estimates from this short-term study reveal that biomass combustion products and crustal material are significant components of winter season PM{sub 10} in this international border community.

  9. Spatial and temporal variation in artisanal catches of dolphinfish Coryphaena hippurus off north-eastern Brazil.

    PubMed

    Nóbrega, M F; Kinas, P G; Lessa, R; Ferrandis, E

    2015-02-01

    The sampling of fish from the artisanal fleet operating with surface lines off north-eastern Brazil was carried out between 1998 and 2000. Generalized linear models (GLMs) were used to standardize mean abundance indices using catch and fishing effort data on dolphinfish Coryphaena hippurus and to identify abundance trends in time and space, using 1215 surface line deployments. A standard relative abundance index (catch per unit effort, CPUE) was estimated for the most frequent vessels used in the sets, employing factors and coefficients generated in the GLMs. According to the models, C. hippurus catches are affected by the operating characteristics and power of different fishing vessels. These differences highlight the need for standardization of catch and effort data for artisanal fisheries. The highest mean abundance values for C. hippurus were off the state of Rio Grande do Norte, with an increasing tendency in areas with greater depths and more distant from the coast, reaching maximal values in areas whose depths range from 200 to 500 m. The highest mean abundance values occurred between April and June. The higher estimated abundance of C. hippurus in this period off the state of Rio Grande do Norte and within the 200-500 m depth range may be related to a migration pattern of food sources, as its main prey, the flying fish Hirundichthys affinis, uses floating algae as refuge and to deposit its pelagic eggs.

  10. Spatial and temporal variation in artisanal catches of dolphinfish Coryphaena hippurus off north-eastern Brazil.

    PubMed

    Nóbrega, M F; Kinas, P G; Lessa, R; Ferrandis, E

    2015-02-01

    The sampling of fish from the artisanal fleet operating with surface lines off north-eastern Brazil was carried out between 1998 and 2000. Generalized linear models (GLMs) were used to standardize mean abundance indices using catch and fishing effort data on dolphinfish Coryphaena hippurus and to identify abundance trends in time and space, using 1215 surface line deployments. A standard relative abundance index (catch per unit effort, CPUE) was estimated for the most frequent vessels used in the sets, employing factors and coefficients generated in the GLMs. According to the models, C. hippurus catches are affected by the operating characteristics and power of different fishing vessels. These differences highlight the need for standardization of catch and effort data for artisanal fisheries. The highest mean abundance values for C. hippurus were off the state of Rio Grande do Norte, with an increasing tendency in areas with greater depths and more distant from the coast, reaching maximal values in areas whose depths range from 200 to 500 m. The highest mean abundance values occurred between April and June. The higher estimated abundance of C. hippurus in this period off the state of Rio Grande do Norte and within the 200-500 m depth range may be related to a migration pattern of food sources, as its main prey, the flying fish Hirundichthys affinis, uses floating algae as refuge and to deposit its pelagic eggs. PMID:27500372

  11. Oil and gas developments in South America, Central America, Caribbean area, and Mexico in 1987

    SciTech Connect

    Wiman, W.D.

    1988-10-01

    Exploration activity in South America, Central America, the Caribbean area, and Mexico in 1987 showed significant increases in seismic acquisition in Belize, Bolivia, Brazil, Costa Rica, Guatemala, Mexico, Paraguay, and Peru, and a decrease in Chile and Venezuela. Exploratory drilling increased in most major producing countries but was accompanied by a decline in development drilling. Most of the increase could be attributed to private companies fulfilling obligations under risk contracts; however, state oil companies in Bolivia, Chile, and Colombia showed significant increased activity, with only Mexico showing a decrease. Colombia again had a dramatic increase in production (29% from 1986). Noteworthy discoveries were made in Bolivia (Villamontes-1); Brazil, in the Solimoes basin (1-RUC-1-AM); Chile (Rio Honda-1); Colombia, in the Llanos basin (Austral-1, La Reforma-1, Libertad Norte-1, Cravo Este-1, and Cano Yarumal-1), in the Upper Magdalena basin (Toldado-1 and Los Mangos-1); Ecuador (Frontera-1, a joint-exploration venture with Colombia); Mexico, in the Chiapas-Tabasco region (Guacho-1 and Iridi-1), in the Frontera Norte area (Huatempo-1); Peru, in the Madre de Dios basin (Armihuari-4X); Trinidad (West East Queen's Beach-1); and Venezuela (Musipan-1X). Brazil's upper Amazon (Solimoes basin) discovery, Colombia's Upper Magdalena basin discoveries Toldado-1 and Los Mangos-1, Mexico's Chiapas-Tabasco discoveries, Peru's confirmation of the giant Cashiriari discovery of 1986, and Venezuela's success in Monagas state were the highlights of 1987. 5 figs., 8 tabs.

  12. Gene-environment interaction of reelin and stress in cognitive behaviours in mice: Implications for schizophrenia.

    PubMed

    Schroeder, Anna; Buret, Laetitia; Hill, Rachel A; van den Buuse, Maarten

    2015-01-01

    Cognitive deficits are a particularly debilitating symptom group in schizophrenia. We investigated the effect of a 'two hit' combination of two factors implicated in schizophrenia development, reelin deficiency and stress, on cognitive behaviours in mice. Male and female heterozygous reelin mice (HRM) and wild-type (WT) controls received the stress hormone, corticosterone (CORT), during early adulthood to simulate chronic stress. The Y-maze, novel object recognition task (NORT), social interaction task and prepulse inhibition (PPI) were used to assess short-term spatial memory, visual non-spatial memory, social recognition memory and sensory gating, respectively. Reelin protein expression was measured in the prefrontal cortex (PFC) and hippocampus. CORT induced spatial memory deficits in male and female HRM but not in WT controls suggesting increased vulnerability of HRM to the effects of stress on cognition. By contrast, CORT disrupted PPI only in male WT mice, but not in male HRM, suggesting a protective role of reelin deficiency against effects of stress on PPI. Male HRM performed worse in the social recognition memory task compared to wild-type controls, irrespective of CORT treatment. No differences were detected in the NORT. Reelin protein expression was increased in the PFC of female CORT-treated HRM but there were no group differences in the hippocampus. Overall, these findings extend our understanding of the role of reelin-stress interactions in schizophrenia.

  13. Differentiation of sympatric populations of the band-rumped storm-petrel in the Galapagos Islands: an examination of genetics, morphology, and vocalizations.

    PubMed

    Smith, A L; Friesen, V L

    2007-04-01

    In each of at least two locations within the Galapagos Islands, breeding band-rumped storm-petrels (Oceanodroma castro) form two distinct populations that use the same colony site at separate times of the year for reproduction. Temporal segregation of these populations raises the possibility that they are reproductively isolated and represent cryptic species. We examined variation in mitochondrial DNA, morphology, and vocalizations of storm-petrel populations nesting 6 months apart on the islet of Plaza Norte in the Galapagos. Seasonal populations displayed low but significant levels of differentiation in the mitochondrial control region, five morphological variables, and one feature of male vocalizations. Breeding populations appear to have been separated for approximately 1700 years. Given the recent divergence date and relatively high effective population sizes (4000-5600 females each), seasonal populations are unlikely to be in genetic equilibrium. As a result, the low divergence estimate probably reflects historical association and not contemporary genetic exchange. These populations are not sufficiently differentiated to be considered cryptic species. However, they are probably in the early stages of divergence. Consequently, we recommend that cool- and hot season populations on Plaza Norte be recognized as separate management units. PMID:17402976

  14. Fotometría superficial de la galaxia irregular NGC 1427A

    NASA Astrophysics Data System (ADS)

    Cellone, S. A.; Forte, J. C.

    Se presenta fotometría superficial multicolor de la galaxia irregular NGC 1427A. Esta galaxia, un miembro del Cúmulo de Fornax que no ha sido estudiado previamente, muestra una morfología muy particular: una distribución estelar subyacente de bajo brillo superficial (LSB) con varias manchas brillantes dispuestas en una estructura anular deformada. Por sus colores muy azules se infiere que estas son zonas de formación estelar reciente. Al norte del cuerpo principal de la galaxia, y conectado con éste mediante filamentos LSB, hay un objeto de isofotas aproximadamente circulares. Este objeto tiene en sí mismo algunas zonas brillantes, pero su población estelar subyacente es significativamente más azul que la del cuerpo principal de la galaxia. Esto indica que ambos objetos han tenido distintas historias evolutivas. Estructuralmente, el objeto del norte es muy similar a algunas de las galaxias elípticas enanas más débiles que pueblan el Cúmulo de Fornax. Se discute la posible relación entre este objeto y la galaxia en si.

  15. Genetic analyses, phenotypic adaptability and stability in sugarcane genotypes for commercial cultivation in Pernambuco.

    PubMed

    Dutra Filho, J A; Junior, T C; Simões Neto, D E

    2015-01-01

    In the present study, we assessed the agro-industrial performance of 22 sugarcane genotypes adaptable to edaphoclimatic conditions in production microregions in the State of Pernambuco, Brazil, and we recommended the commercial cultivation of select genotypes. The variables analyzed were as follows: sucrose percentage in cane juice, tonnage of saccharose per hectare (TPH), sugarcane tonnage per hectare (TCH), fiber, solid soluble contents, total recoverable sugar tonnage (ATR), and total recoverable sugar tonnage per hectare (ATR t/ha). A randomized block design with 4 repeats was used. Combined variance of the experiments, genetic parameter estimates, and environment stratification were analyzed. Phenotypic adaptability and stability were analyzed using the Annicchiarico and Wricke methods and analysis of variance. Genetic gain was estimated using the classic index and sum of ranks. Genotype selection was efficient for TPH, TCH, and ATR t/ha. Genotypes presented a great potential for improvement and a similar response pattern in Litoral Norte and Mata Sul microregions for TPH and TCH and Litoral Norte and Litoral Sul microregions for ATR t/ha. Genotypes SP78-4764, RB813804, and SP79-101 showed better productivity and phenotypic adaptability and stability, according to the Wricke and Annicchiarico methods. These genotypes can be recommended for cultivation in the sugarcane belt in the State of Pernambuco. PMID:26505357

  16. Mercury Pollution from Small-Scale Gold Mining Can Be Stopped by Implementing the Gravity-Borax Method--A Two-Year Follow-Up Study from Two Mining Communities in the Philippines.

    PubMed

    Køster-Rasmussen, Rasmus; Westergaard, Maria L; Brasholt, Marie; Gutierrez, Richard; Jørs, Erik; Thomsen, Jane F

    2016-02-01

    Mercury is used globally to extract gold in artisanal and small-scale gold mining. The mercury-free gravity-borax method for gold extraction was introduced in two mining communities using mercury in the provinces Kalinga and Camarines Norte. This article describes project activities and quantitative changes in mercury consumption and analyzes the implementation with diffusion of innovations theory. Activities included miner-to-miner training; seminars for health-care workers, school teachers, and children; and involvement of community leaders. Baseline (2011) and follow-up (2013) data were gathered on mining practices and knowledge about mercury toxicology. Most miners in Kalinga converted to the gravity-borax method, whereas only a few did so in Camarines Norte. Differences in the nature of the social systems impacted the success of the implementation, and involvement of the tribal organization facilitated the shift in Kalinga. In conclusion, the gravity-borax method is a doable alternative to mercury use in artisanal and small-scale gold mining, but support from the civil society is needed.

  17. Neurobehavioral assessment following e-cigarette refill liquid exposure in adult rats.

    PubMed

    Golli, Narges El; Dallagi, Yosra; Rahali, Dalila; Rejeb, Ines; Fazaa, Saloua El

    2016-07-01

    The present study was conducted to assess the toxic effect of e-cigarette refill liquid on cognitive and motor functions in adult rats. Animals were administered 28 μl/kg of body weight of e-liquid with/without a dose of 0.5 mg of nicotine/kg of body weight, using the intraperitoneally route for a period of 4 weeks. They were then evaluated by novel object recognition test (NORT) and spontaneous alternation T-maze test for cognitive functions. Results indicated that e-liquid without nicotine induced, in the NORT, a decrease in time exploring the novel object during the test session and lower discrimination and recognition indexes compared to control and e-liquid with nicotine treated rats. Furthermore, short-term spatial memory was affected after e-liquid treatment in the spontaneous alternation T-maze test, identifying recognition memory impairments. However, none of the treatments altered motor functions assessed by inclined plane test, Kondziela's inverted screen test and weights test. Cell cytotoxicity assessment following e-liquid exposure showed a significant decrease in hippocampal cell viability, but no change in cortical cell viability. Thereby, e-liquid without nicotine causes cognitive impairments, especially on the hippocampus. Based on these results, more extensive assessments on e-cigarettes must be carried out. PMID:27401341

  18. Evaluating outcome-correlated recruitment and geographic recruitment bias in a respondent-driven sample of people who inject drugs in Tijuana, Mexico.

    PubMed

    Rudolph, Abby E; Gaines, Tommi L; Lozada, Remedios; Vera, Alicia; Brouwer, Kimberly C

    2014-12-01

    Respondent-driven sampling's (RDS) widespread use and reliance on untested assumptions suggests a need for new exploratory/diagnostic tests. We assessed geographic recruitment bias and outcome-correlated recruitment among 1,048 RDS-recruited people who inject drugs (Tijuana, Mexico). Surveys gathered demographics, drug/sex behaviors, activity locations, and recruiter-recruit pairs. Simulations assessed geographic and network clustering of active syphilis (RPR titers ≥1:8). Gender-specific predicted probabilities were estimated using logistic regression with GEE and robust standard errors. Active syphilis prevalence was 7 % (crude: men = 5.7 % and women = 16.6 %; RDS-adjusted: men = 6.7 % and women = 7.6 %). Syphilis clustered in the Zona Norte, a neighborhood known for drug and sex markets. Network simulations revealed geographic recruitment bias and non-random recruitment by syphilis status. Gender-specific prevalence estimates accounting for clustering were highest among those living/working/injecting/buying drugs in the Zona Norte and directly/indirectly connected to syphilis cases (men: 15.9 %, women: 25.6 %) and lowest among those with neither exposure (men: 3.0 %, women: 6.1 %). Future RDS analyses should assess/account for network and spatial dependencies.

  19. [Irrigated perimeters as a geopolitical strategy for the development of the semi-arid region and its implications for health, labor and the environment].

    PubMed

    Pontes, Andrezza Graziella Veríssimo; Gadelha, Diego; Freitas, Bernadete Maria Coêlho; Rigotto, Raquel Maria; Ferreira, Marcelo José Monteiro

    2013-11-01

    An analysis was made of irrigated perimeters as a geopolitical strategy for expanding Brazilian agricultural frontiers and the "development" of the northeastern semi-arid region with respect to social determinants in health in rural communities. Research was conducted in the Chapada do Apodi in the states of Ceará and Rio Grande do Norte between 2007 and 2011. Various research techniques and tools were adopted, such as research-action, ethnographic studies, questionnaires and laboratory exams, water contamination analyses, social cartography and focal groups. In the context of agribusiness expansion, it was revealed that public policies of irrigation have had consequences for health, labor and the environment with the implementation of the Jaguaribe-Apodi Irrigated Perimeter in Ceará. The social and environmental conflict and resistance in the phase prior to the installation of the Santa Cruz do Apodi Irrigated Perimeter in Rio Grande do Norte was significant as it had consequences for the health-disease process on rural communities. It is important for the evaluation of public irrigation policies to consider the impacts of the perimeters on the lifestyle, labor, health and the environment of the affected territories.

  20. Mercury Pollution from Small-Scale Gold Mining Can Be Stopped by Implementing the Gravity-Borax Method--A Two-Year Follow-Up Study from Two Mining Communities in the Philippines.

    PubMed

    Køster-Rasmussen, Rasmus; Westergaard, Maria L; Brasholt, Marie; Gutierrez, Richard; Jørs, Erik; Thomsen, Jane F

    2016-02-01

    Mercury is used globally to extract gold in artisanal and small-scale gold mining. The mercury-free gravity-borax method for gold extraction was introduced in two mining communities using mercury in the provinces Kalinga and Camarines Norte. This article describes project activities and quantitative changes in mercury consumption and analyzes the implementation with diffusion of innovations theory. Activities included miner-to-miner training; seminars for health-care workers, school teachers, and children; and involvement of community leaders. Baseline (2011) and follow-up (2013) data were gathered on mining practices and knowledge about mercury toxicology. Most miners in Kalinga converted to the gravity-borax method, whereas only a few did so in Camarines Norte. Differences in the nature of the social systems impacted the success of the implementation, and involvement of the tribal organization facilitated the shift in Kalinga. In conclusion, the gravity-borax method is a doable alternative to mercury use in artisanal and small-scale gold mining, but support from the civil society is needed. PMID:26463257

  1. Groundwater and Associated Solute Contribution to a Pristine Semi-Arid Estuary Using Resistivity Imaging, Naturally Occurring Radioactive Tracers, and Geochemical Methods.

    NASA Astrophysics Data System (ADS)

    Spalt, N.; Murgulet, D.; Douglas, A. R.

    2015-12-01

    Geophysical, geochemical, and Naturally Occurring Radioactive Tracers (NORTs) were used in a semi-arid National Estuarine Research Reserve to estimate Submarine Groundwater Discharge (SGD) rates and nutrient fluxes. SGD has been identified as an important source of limiting nutrients to coastal ecosystems, and is conceivably even more critical in a dry climate. Groundwater inflows are rarely considered in estuary mass budgets, therefore sampling stations were chosen over the entire bay system to identify spatial differences in SGD and to estimate direct groundwater contributions. This interdisciplinary approach proved necessary to differentiate between the bay recirculation and terrestrial components of SGD. Resistivity measurements using a towed electrode array were used to identify sampling stations at areas favorable to SGD. While NORTs may provide an estimate of basin-wide groundwater input, these sampling stations ascertain the favorable geologic environment for hydraulic interconnectivity between surface water and groundwater in the system. A sampling suite (including metals and nutrients) of surface, bottom, and pore waters during winter and summer months display spatio-temporal changes in nutrient fluxes. This study reinforces the understanding of the necessity to use multiple methods to accurately quantify SGD and associated solute fluxes and advances the knowledge of coastal groundwater interaction in semi-arid environments.

  2. The combination of memantine and galantamine improves cognition in rats: The synergistic role of the α7 nicotinic acetylcholine and NMDA receptors.

    PubMed

    Nikiforuk, Agnieszka; Potasiewicz, Agnieszka; Kos, Tomasz; Popik, Piotr

    2016-10-15

    The combination of memantine and acetylcholinesterase inhibitors (AChEIs) is used as a therapeutic strategy to improve cognition in Alzheimer's disease. Among AChEIs, galantamine, which is also a positive allosteric modulator (PAM) of nicotinic acetylcholine receptors (nAChRs), including α7-nAChRs, may be particularly beneficial. The α7-nAChR is involved in interactions between the cholinergic and glutamatergic systems. In the present study, we investigated the potential role of α7-nAChRs in the pro-cognitive effects of this drug combination. To this aim, cognitive performance in rats was assessed using the attentional set shifting task (ASST) and novel object recognition task (NORT). Co-administration of inactive doses of memantine with galantamine facilitated the rats' set-shifting performance and reversed delay-induced deficits in object recognition. These effects were blocked by the α7-nAChR antagonist methyllycaconitine, suggesting that the observed cognitive enhancement is α7-nAChR dependent. Moreover, combined administration of memantine with inactive doses of selective α7-nAChRs PAMs, CCMI and PNU-120596, also improved ASST and NORT performance in a methyllycaconitine-dependent manner. Stimulation of α7-nAChRs may underlie the pro-cognitive effects of combining memantine and galantamine. Our results suggest that memantine, when given with enhancers of α7-nAChRs, may represent an effective strategy for cognitive improvement. PMID:27435422

  3. The sandfly fauna, anthropophily and the seasonal activities of Pintomyia spinicrassa (Diptera: Psychodidae: Phlebotominae) in a focus of cutaneous leishmaniasis in northeastern Colombia

    PubMed Central

    Ovallos, Fredy Galvis; Silva, Yanis Ricardo Espinosa; Fernandez, Nelson; Gutierrez, Reynaldo; Galati, Eunice Aparecida Bianchi; Sandoval, Claudia Magaly

    2013-01-01

    This study was conducted to identify the sandfly fauna and the anthropophilic species in a coffee-growing area of Villanueva, Norte de Santander, Colombia, a focus of American cutaneous leishmaniasis, and to analyse the relationship between the most frequent species and rainfall, relative humidity and temperature, with the aim of contributing to epidemiological surveillance in the area. Sandfly collections were performed fortnightly between February 2006-September 2007 using automatic light traps, Shannon traps, protected human bait and aspiration in resting places. A total of 7,051 sandflies belonging to 12 species were captured. Pintomyia spinicrassa (95.7%) predominated. Pintomyia oresbia and Lutzomyia sp. of Pichinde were found in the state of Norte de Santander for the first time. Pi. spinicrassa, Pintomyia nuneztovari, Micropygomyia venezuelensis, Lutzomyia (Helcocyrtomyia) scorzai and Lu. (Helcocyrtomyia) sp. were captured on the protected human bait. A significant association between Pi. spinicrassa abundance and the total rainfall and the average temperature and humidity 10 days before the collection was observed. The dominance of Pi. spinicrassa, a recognised vector of Leishmania braziliensis, especially during the dry periods, indicates that the risk of parasite transmission may increase. PMID:23778653

  4. Neurobehavioral assessment following e-cigarette refill liquid exposure in adult rats.

    PubMed

    Golli, Narges El; Dallagi, Yosra; Rahali, Dalila; Rejeb, Ines; Fazaa, Saloua El

    2016-07-01

    The present study was conducted to assess the toxic effect of e-cigarette refill liquid on cognitive and motor functions in adult rats. Animals were administered 28 μl/kg of body weight of e-liquid with/without a dose of 0.5 mg of nicotine/kg of body weight, using the intraperitoneally route for a period of 4 weeks. They were then evaluated by novel object recognition test (NORT) and spontaneous alternation T-maze test for cognitive functions. Results indicated that e-liquid without nicotine induced, in the NORT, a decrease in time exploring the novel object during the test session and lower discrimination and recognition indexes compared to control and e-liquid with nicotine treated rats. Furthermore, short-term spatial memory was affected after e-liquid treatment in the spontaneous alternation T-maze test, identifying recognition memory impairments. However, none of the treatments altered motor functions assessed by inclined plane test, Kondziela's inverted screen test and weights test. Cell cytotoxicity assessment following e-liquid exposure showed a significant decrease in hippocampal cell viability, but no change in cortical cell viability. Thereby, e-liquid without nicotine causes cognitive impairments, especially on the hippocampus. Based on these results, more extensive assessments on e-cigarettes must be carried out.

  5. Effects of eight months of whole body vibration training on hip bone mass in older women.

    PubMed

    Santin-Medeiros, Fernanda; Santos-Lozano, Alejandro; Rey-López, Juan Pablo; Vallejo, Nuria Garatachea

    2015-04-01

    Objetivo: el objetivo de este estudio fue examinar el efecto de 8 meses de entrenamiento vibratorio sobre la masa ósea en mujeres octogenarias. Métodos: 37 mujeres (edad 82.4 [SD=5.7] años) participaron voluntariamente de este estudio. El grupo de intervención (n=19) entrenó sobre la plataforma vibratoria 2 veces por semana (20 Hz and 2 mm), mientras que el grupo control (n=18) no participó de ningún programa de entrenamiento. La masa ósea de la cadera fue medida mediante el absorciometría fotónica dual de rayos X. El test de ANOVA de medidas repetidas fue utilizado para determinar el efecto de la intervención sobre los cambios de masa ósea, así como los cambios intra-grupo a lo largo del período de intervención. Resultados: Después de la intervención, no fueron encontrados cambios estadísticamente significativos en la masa ósea en ninguna de las regiones de la cadera (total de cadera, cuello de femur, trocánter, intertrocanterea, area de Ward). Conclusiones: Nuestra intervención basada en la aplicación exclusiva de entrenamiento vibratorio de cuerpo entero (2 veces a la semana) en mujeres octogenarias no produce efectos osteogénicos en la región de la cadera.

  6. Effects of a short-term whole body vibration intervention on lean mass in elderly people.

    PubMed

    Gómez-Cabello, Alba; González-Agüero, Alejandro; Ara, Ignacio; Casajús, José A; Vicente-Rodríguez, Germán

    2013-01-01

    Objetivo: Comprobar si un programa de entrenamiento vibratorio de corta duración tiene algún efecto sobre la masa magra (MM) en personas mayores. Método: 49 personas mayores no institucionalizadas (20 hombres) participaron en el estudio. Los participantes que reunieron los criterios de inclusión fueron distribuidos al azar en el grupo de entrenamiento o el grupo control. Un total de 24 personas entrenaron sobre una plataforma vibratoria 3 veces por semana durante 11 semanas. Mediante absorciometría fotónica dual de rayos X se evaluó la MM del cuerpo completo, brazos y piernas. Se utilizó ANOVA de medidas repetidas para determinar los efectos de la intervención sobre las variables estudiadas y también para determinar los cambios intra-grupo a lo largo del periodo de intervención, incluyendo la edad y altura como variables de confusión. Resultados: 11 semanas de entrenamiento vibratorio no produjeron ningún cambio sobre la MM en ninguna de las regiones. Conclusión: Un programa de entrenamiento vibratorio de corta duración no es suficiente para producir cambios significativos en la masa magra en personas mayores no institucionalizadas.

  7. Retrowedge-related Carboniferous units and coeval magmatism in the northwestern Neuquén province, Argentina

    NASA Astrophysics Data System (ADS)

    Zappettini, Eduardo O.; Chernicoff, Carlos J.; Santos, Joao O. S.; Dalponte, Marcelo; Belousova, Elena; McNaughton, Neal

    2012-11-01

    The studied Carboniferous units comprise metasedimentary (Guaraco Norte Formation), pyroclastic (Arroyo del Torreón Formation), and sedimentary (Huaraco Formation) rocks that crop out in the northwestern Neuquén province, Argentina. They form part of the basement of the Neuquén Basin and are mostly coeval with the Late Paleozoic accretionary prism complex of the Coastal Cordillera, south-central Chile. U-Pb SHRIMP dating of detrital zircon yielded a maximum depositional age of 374 Ma (Upper Devonian) for the Guaraco Norte Formation and 389 Ma for the Arroyo del Torreón Formation. Detrital magmatic zircon from the Guaraco Norte Formation are grouped into two main populations of Devonian and Ordovician (Famatinian) ages. In the Arroyo del Torreón Formation, zircon populations are also of Devonian and Ordovician (Famatinian), as well as of Late Neoproterozoic and Mesoproterozoic ages. In both units, there is a conspicuous population of Devonian magmatic zircon grains (from 406 ± 4 Ma to 369 ± 5 Ma), indicative of active magmatism at that time range. The ɛHf values of this population range between -2.84 and -0.7, and the TDM-(Hf) are mostly Mesoproterozoic, suggesting that the primary sources of the Devonian magmatism contained small amounts of Mesoproterozoic recycled crustal components. The chemical composition of the Guaraco Norte Formation corresponds to recycled, mature polycyclic sediment of mature continental provenance, pointing to a passive margin with minor inputs from continental margin magmatic rocks. The chemical signature of the Huaraco Formation indicates that a magmatic arc was the main provenance for sediments of this unit, which is consistent with the occurrence of tuff—mostly in the Arroyo del Torreón Formation and very scarcely in the Huaraco Formation—with a volcanic-arc signature, jointly indicating the occurrence of a Carboniferous active arc magmatism during the deposition of the two units. The Guaraco Norte Formation is interpreted

  8. Insecticide resistance in Aedes aegypti populations from Ceará, Brazil

    PubMed Central

    2011-01-01

    Background Organophosphates and pyrethroids are used widely in Brazil to control Aedes aegypti, the main vector of dengue viruses, under the auspices of the National Programme for Dengue Control. Resistance to these insecticides is widespread throughout Brazil. In Ceará the vector is present in 98% of districts and resistance to temephos has been reported previously. Here we measure resistance to temephos and the pyrethroid cypermethrin in three populations from Ceará and use biochemical and molecular assays to characterise resistance mechanisms. Results Resistance to temephos varied widely across the three studied populations, with resistance ratios (RR95) of 7.2, 30 and 192.7 in Juazeiro do Norte, Barbalha and Crato respectively. The high levels of resistance detected in Barbalha and Crato (RR95 ≥ 30) imply a reduction of temephos efficacy, and indeed in simulated field tests reduced effectiveness was observed for the Barbalha population. Two populations (Crato and Barbalha) were also resistant to cypermethrin, whilst Juazeiro do Norte showed only an altered susceptibility. The Ile1011Met kdr mutation was detected in all three populations and Val1016Ile in Crato and Juazeiro do Norte. 1011Met was significantly associated with resistance to cypermethrin in the Crato population. Biochemical tests showed that only the activity of esterases and GSTs, among the tested detoxification enzymes, was altered in these populations when compared with the Rockefeller strain. Conclusions Our results demonstrate that two A. aegypti populations from Ceará are under strong selection pressure by temephos, compromising the field effectiveness of this organophosphate. Our results also provide evidence that the process of reducing resistance to this larvicide in the field is difficult and slow and may require more than seven years for reversal. In addition, we show resistance to cypermethrin in two of the three populations studied, and for the first time the presence of the

  9. Origin of rhyolite by crustal melting and the nature of parental magmas in the Oligocene Conejos Formation, San Juan Mountains, Colorado, USA

    NASA Astrophysics Data System (ADS)

    Parker, D. F.; Ghosh, A.; Price, C. W.; Rinard, B. D.; Cullers, R. L.; Ren, M.

    2005-01-01

    Four closely spaced volcanoes (Summer Coon; Twin Mountains; Del Norte; Carnero Creek) form the east-central cluster of Conejos volcanic centers. These Conejos rocks range from high-K basaltic andesite to rhyolite, with andesite volumetrically the most abundant. Summer Coon and Twin Mountains are composite volcanoes. The Del Norte and Carnero Creek volcanoes are deeply eroded dacite shields. Rhyolite (10% of our Conejos analyses but a much smaller percentage by volume) is only known from Summer Coon and Twin Mountains volcanoes, although high-SiO 2 dacite occurs in the Del Norte volcano. The younger Hinsdale Formation contains a related series ranging from transitional basalt to high-K andesite; we use Hinsdale Formation analyses to represent Conejos parental magmas. Conejos and Hinsdale magmas evolved through AFC processes: Basalt, after interacting with lower crust, assimilated low K/Rb crust, similar in some ways to Taylor and McLennan (Taylor, S.R., and McLennan, S.M., 1985, The continental crust: its composition and evolution. Oxford, Blackwell Scientific.) model upper crust; main series basaltic andesite fractionated to high-K andesite; rhyolite was produced by melting of high K/Ba upper crustal rocks similar to granite gneiss known from inclusions and basement outcrops. Some rhyolite may have been back-mixed into fractionating andesite and dacite. Field evidence for assimilation includes sanidinite-facies, partially melted, gneiss blocks up to 1 m in diameter. Temperature estimates (1100-900 ° C) from two-pyroxene equilibria are consistent with this interpretation, as are the sparsely porphyritic nature of the most-evolved rhyolites and the absence of phenocrystic alkali feldspar. Our study supports the conclusions of previous workers on AFC processes in similar, but generally more mafic, Conejos magmas of the southeastern San Juan Mountains. Our results, however, emphasize the importance of crustal melting in the generation of Conejos rhyolite. We further

  10. Guidebook to the Gaudalupian symposium

    USGS Publications Warehouse

    Rohr, D.M.; Wardlaw, B.R.; Rudine, S.F.; Haneef, Mohammad; Hall, A.J.; Grant, R.E.

    2000-01-01

    Compared to the Guadalupe Mountains of Texas and New Mexico the depositional environments of the Permian strata of the Glass Mountains (and adjacent Del Norte Mountains) are less well known. In general, the Guadalupian facies in the the Glass and Del Norte mountains changes from predominantly carbonate facies in the northeast to thicker clastic facies in the southwest. Philip B. Kind (1931) originally considered this trend to reflect an uplifted clastic source to the southwest, with carbonate facies developing away from the source area. Ross (1986) interpreted the eastern portion of the Road Canyon and Word formations to consist the shelf, shelf-edge bioherm, and reef facies, and the southwest area to consist of deeper water siliceous shale, clastic limestone, and basinal sandstone facies. Probably the best known controversy in the Glass Mountains involves the depositional environment of the Skinner Ranch Formation (Leonardian according to Ross, 1986; Wolfcampian according to Cooper and Grant, 1972) at its type section on Leonard Mountain. Cooper and Grant (1964) identified in situ patch reefs at the base of the section, which were subsequently interpreted as displaced limestone blocks deposited in a slope environment (Rogers, 1972; Cys and Mazzullo, 1978; Ross, 1986). Later Flores, McMillan, and Watters (1977) interpreted the same units as subtidal and intertidal deposits. The Skinner Ranch Formation illustrates the complexities involved in interpreting the paleogeography of the Glass Mountains. If the Sinner Ranch contains displaced blocks, some eroded from older units, it explains the occurrence of Wolfcampian fossils in the Skinner Ranch (Ross, 1986).The slop facies interpretation also is used to place the shelf edge at that time between Skinner Ranch outcrops at Leonard Mountain and the lagoonal, backreef deposits of the Hess Formation to the east, although most of the actual shelf edge is not preserved (Ross, 1987:30). Similar conflicting interpretations

  11. [Density, size structure and reproductive activity of the pink conch Eustrombus gigas (Mesogastropoda: Strombidae) in Banco Chinchorro, Mexico].

    PubMed

    Cala, Yuself R; Navarrete, Alberto de Jesús; Ocaña, Frank A; Rivera, José Oliva

    2013-12-01

    The pink conch Eustrombus gigas is an important fisheries resource. At the regional level in the Caribbean, over-exploitation and habitat destruction have caused a decrease in the abundance of this resource. In order to provide necessary information for the species management in Mexico, this work aimed to analyze the total density, adult density, size structure and reproductive behavior of pink conch population at Banco Chinchorro during 2009-2010. Data from three seasons were obtained (rainy, dry and cold fronts periods) in three areas: Norte (North), Centro (Center) and Sur (South). The organisms were separated into two groups: (a) the criteria based upon legal harvest in Mexico: legal size conchs (siphonal length > 200 mm) and illegal size conchs (siphonal length < 200 mm), and (b) the criteria based upon sexual maturity using the 15 mm lip thickness standard: lip < 15 mm as juvenile conch and lip > or = 15 mm as adult conch. Copulation, spawning, egg masses and aggregations were evaluated as reproductive evidences. The highest total density was observed during the dry season with 384ind./ha, and the lowest during the rainy season with 127ind./ha. The highest density was reported at Sur (385ind./ha) and the lowest at Norte (198ind./ ha). The highest adult density was observed during the rainy season (8.33ind./ha), and the lowest occurred in the dry season (6.1 ind./ha). Adult density values were 5.55, 7.05 and 8.33ind./ha for Centro, Sur and Norte areas, respectively. Adult densities were lower than the threshold needed for reproduction, and 42% of the population may be vulnerable to fishing, as they had the minimum size for catch (Lsi 200 mm). Furthermore, only 2.2% of the population reached a Gl > 15 mm as sexual maturity indicator. During the study period, only six evidences of reproductive activity were observed. The smaller densities reported at Banco Chinchorro may cause reproduction events to be almost absent which in turn is sufficient evidence to show

  12. The geostatistics of the metal concentrations in sediments from the eastern Brazilian continental shelf in areas of gas and oil production

    NASA Astrophysics Data System (ADS)

    Aguiar, Jose Edvar; de Lacerda, Luiz Drude; Miguens, Flavio Costa; Marins, Rozane Valente

    2014-04-01

    Geostatistical techniques were used to evaluate the differences in the geochemistry of metals in the marine sediments along the Eastern Brazilian continental margin along the states of Ceará and Rio Grande do Norte (Northeastern sector) and Espírito Santo (Southeastern sector). The concentrations of Al, Fe, Mn, Ba, Cd, Cu, Cr, Ni, Pb, V, Hg, and Zn were obtained from acid digestion and quantified using flame atomic absorption spectrometry (AAS), inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma atomic emission spectrometry (ICP-AES). The metals showed a similar order of concentration: Al > Fe > Ba > Mn > V > Ni > Pb > Cr > Zn > Cu, in both the Ceará; and Rio Grande do Norte shelf regions but different in the Espírito Santo shelf (Fe > Al > Mn > Ba > Zn > V > Cr > Ni > Pb > Cu. The concentrations of Hg and Cd were below the detection limit in all areas. A multivariate analysis revealed that the metals of siliciclastic origin on the continental shelf of Ceará are carried by Al. In addition, a large portion of metal deposits is connected to the iron and manganese oxides on the continental margin of Rio Grande do Norte. The metals from the continental supply on the coast of Espírito Santo (Cu, Ni, Ba, and Mn) are associated with Al; whereas Cr, Pb, V, and Zn are associated with iron in this southern area. Geochemical evaluations are needed to distinguish the origin and mineralogical differences of marine sediments within the regions. Scanning electron microscopy/energy dispersive spectrometry (SEM/EDS) applied to the sediments from the coast of Ceará showed the morphological diversity of sediment grains: biological fragments, multifaceted particles, aggregates, and crystals occurred in the three regions analyzed. Among these grains, calcite, Mg-calcite, and aragonite were predominant in the northeastern sector, whereas silicates and other minerals were predominant the southeastern sector. Mg, K, Ti, and Zr as well as the

  13. Positive allosteric modulation of alpha 7 nicotinic acetylcholine receptors enhances recognition memory and cognitive flexibility in rats.

    PubMed

    Nikiforuk, Agnieszka; Kos, Tomasz; Potasiewicz, Agnieszka; Popik, Piotr

    2015-08-01

    A wide body of preclinical and clinical data suggests that alpha 7 nicotinic acetylcholine receptors (α7-nAChRs) may represent useful targets for cognitive improvement in schizophrenia and Alzheimer׳s disease. A promising recent approach is based on the use of positive allosteric modulators (PAMs) of α7-nAChRs due to their several advantages over the direct agonists. Nevertheless, the behavioural effects of this class of compounds, particularly with regard to higher-order cognitive functions, have not been broadly characterised. The aim of the present study was to evaluate the procognitive efficacies of type I and type II α7-nAChRs PAMs, N-(4-chlorophenyl)-[[(4-chlorophenyl)amino]methylene]-3-methyl-5-isoxazoleacet-amide (CCMI) and N-(5-Chloro-2,4-dimethoxyphenyl)-N'-(5-methyl-3-isoxazolyl)urea (PNU-120596) in the novel object recognition task (NORT), attentional set-shifting task (ASST) and five-choice serial reaction time task (5-CSRTT) in rats. Additionally, the effects of galantamine, an acetylcholinesterase inhibitor that also allosterically modulates nAChRs, were assessed. We report that CCMI (0.3-3mg/kg), PNU-120596 (0.3-3mg/kg) and galantamine (1-3mg/kg) attenuated the delay-induced impairment in NORT performance and facilitated cognitive flexibility in the ASST. Methyllycaconitine (3mg/kg) blocked the actions of CCMI, PNU-120596 and galantamine in the NORT and ASST, suggesting that the procognitive effects of these compounds are α7-nAChRs-dependent. However, none of the compounds tested affected the rats' attentional performance in the 5-CSRTT. The present findings confirm and extend the observations indicating that the positive allosteric modulation of α7-nAChRs enhances recognition memory and cognitive flexibility in preclinical tasks. Therefore, the present study supports the utility of α7-nAChRs PAMs as a potential cognitive enhancing therapy. PMID:26003081

  14. [Density, size structure and reproductive activity of the pink conch Eustrombus gigas (Mesogastropoda: Strombidae) in Banco Chinchorro, Mexico].

    PubMed

    Cala, Yuself R; Navarrete, Alberto de Jesús; Ocaña, Frank A; Rivera, José Oliva

    2013-12-01

    The pink conch Eustrombus gigas is an important fisheries resource. At the regional level in the Caribbean, over-exploitation and habitat destruction have caused a decrease in the abundance of this resource. In order to provide necessary information for the species management in Mexico, this work aimed to analyze the total density, adult density, size structure and reproductive behavior of pink conch population at Banco Chinchorro during 2009-2010. Data from three seasons were obtained (rainy, dry and cold fronts periods) in three areas: Norte (North), Centro (Center) and Sur (South). The organisms were separated into two groups: (a) the criteria based upon legal harvest in Mexico: legal size conchs (siphonal length > 200 mm) and illegal size conchs (siphonal length < 200 mm), and (b) the criteria based upon sexual maturity using the 15 mm lip thickness standard: lip < 15 mm as juvenile conch and lip > or = 15 mm as adult conch. Copulation, spawning, egg masses and aggregations were evaluated as reproductive evidences. The highest total density was observed during the dry season with 384ind./ha, and the lowest during the rainy season with 127ind./ha. The highest density was reported at Sur (385ind./ha) and the lowest at Norte (198ind./ ha). The highest adult density was observed during the rainy season (8.33ind./ha), and the lowest occurred in the dry season (6.1 ind./ha). Adult density values were 5.55, 7.05 and 8.33ind./ha for Centro, Sur and Norte areas, respectively. Adult densities were lower than the threshold needed for reproduction, and 42% of the population may be vulnerable to fishing, as they had the minimum size for catch (Lsi 200 mm). Furthermore, only 2.2% of the population reached a Gl > 15 mm as sexual maturity indicator. During the study period, only six evidences of reproductive activity were observed. The smaller densities reported at Banco Chinchorro may cause reproduction events to be almost absent which in turn is sufficient evidence to show

  15. Accelerating Adaptation of Natural Resource Management to Address Climate Change

    PubMed Central

    Cross, Molly S; McCarthy, Patrick D; Garfin, Gregg; Gori, David; Enquist, Carolyn AF

    2013-01-01

    Atender el Cambio Climático Resumen Los manejadores de recursos naturales están buscando herramientas para ayudarles a atender los efectos actuales y futuros del cambio climático. Presentamos un modelo para la planificación colaborativa enfocada a identificar formas para adaptar las acciones de manejo para atender los efectos del cambio climático en paisajes que cruzan límites jurisdiccionales públicos y privados. La Iniciativa Sudoccidental de Cambio Climático (ISCC) puso a prueba el método de planificación de Adaptación para Metas de Conservación (AMC) en talleres en cuatro paisajes del suroeste de E. U. A. Este método de planificación incrementó exitosamente la capacidad de los participantes para atender el cambio climático al proporcionarles un mejor entendimiento de los efectos potenciales y guiar la identificación de soluciones. Los talleres promovieron el diálogo trans-jurisdiccional y multidisciplinario sobre cambio climático mediante la participación activa de científicos y manejadores en la evaluación de efectos del cambio climático, la discusión de implicaciones de esos efectos para determinar las metas y actividades de manejo y desarrollar oportunidades para la coordinación regional de la adaptación de planes de manejo. La aplicación simplificada del marco AMC llevó las discusiones de grupo más allá de la evaluación de los efectos a la concepción de opciones para mitigar los efectos del cambio climático sobres determinadas especies, funciones ecológicas y ecosistemas. Los participantes abordaron la incertidumbre de las condiciones futuras al considerar más de un escenario de cambio climático. Delinearon oportunidades e identificaron los siguientes pasos para la implementación de varias acciones, y asociaciones locales han comenzado a implementar acciones y realizar planificación adicional. Se requiere inversión continua en la adaptación de planes y acciones de manejo para atender los efectos del cambio climático en el

  16. Additions to Philippine Slender Skinks of the Brachymeles bonitae Complex (Reptilia: Squamata: Scincidae) II: a new species from the northern Philippines.

    PubMed

    Siler, Cameron D; Davis, Drew R; Freitas, Elyse S; Huron, Nicholas A; Geheber, Aaron D; Watters, Jessa L; Penrod, Michelle L; Papeș, Monica; Amrein, Andrew; Anwar, Alyssa; Cooper, Dontae; Hein, Tucker; Manning, Annalisa; Patel, Neeral; Pinaroc, Lauren; Diesmos, Arvin C; Diesmos, Mae L; Oliveros, Carl H; Brown, Rafe M

    2016-01-01

    We describe a new digitless scincid lizard of the genus Brachymeles from northern Luzon and Camiguin Norte islands in the Philippines. This species belongs to the Brachymeles bonitae Complex, and both molecular and morphological data confirm that this species is distinct from all other congeners. Formerly considered to be a single widespread species, this group of species has been the focus of recent systematic reviews. Here we describe a new species in the B. bonitae Complex, recognized currently to constitute five species. Brachymeles ilocandia sp. nov. is the second digitless and the seventeenth non-pentadactyl species in genus. The description of this species brings the total number of species in the genus to 40, and provides new insight into unique distribution patterns of species of the northern Philippines. PMID:27395649

  17. 7. OBLIQUE VIEW OF NORTH PORTAL AND DOWNSTREAM SIDE OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. OBLIQUE VIEW OF NORTH PORTAL AND DOWNSTREAM SIDE OF BRIDGE, LOOKING WEST. Lights and illuminated sign on portal bracing were elements of an overheight load warning system designed to eliminate accidents of the type which damaged the bridge. However, the system was in place only on the north side of the bridge, controlling trucks approaching from Oregon. In theory, trucks with overheight, overwidth, or overweight loads from California would be controlled by the State's permit system. In fact, it was a 'permit' load originating in California, being hauled without the requisite permit which struck and damaged the bridge. - Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescent City, Del Norte County, CA

  18. Wetland bird seasonal abundance and habitat use at Lake Earl and Lake Talawa, California

    USGS Publications Warehouse

    Funderburk, S.L.; Springer, P.F.

    1989-01-01

    A study of wetland bird composition, seasonal abundance, and habitat use was conducted on Lake Earl and Lake Talawa in Del Norte County, California from July 1974 through February 1976. Ninety-five species were recorded. Most birds occurred from October to December and during March and April. Diving ducks occurred primarily during fall and winter and were more abundant than surface-feeding waterfowl. Surface-feeding ducks occurred mostly during early and mid fall. Shorebird numbers were highest during spring and fall. The American Coot was the most abundant species recorded. Of all birds recorded, 69% used open water and 11% used flooded or bare mud and sand flats. Sand shores supported the highest densities of birds. Eleven species used six of the seven available habitat types. Freshwater marsh, mud/sandflat, and sand shore habitat types were preferred over other available habitat types. The lakes are an important wetland to migrating birds.

  19. Two New Nepenthes Species from the Philippines and an Emended Description of Nepenthes ramos

    PubMed Central

    Gronemeyer, Thomas; Suarez, Wally; Nuytemans, Herman; Calaramo, Michael; Wistuba, Andreas; Mey, François S.; Amoroso, Victor B.

    2016-01-01

    With 50 species of the genus Nepenthes L. currently described from the Philippines, it is without doubt that the country, along with the islands of Sumatra (Indonesia) and Borneo (Indonesia, Malaysia, Brunei), should be considered the center of diversity of the genus. In this work, we describe two new species. One species, N. aenigma sp. nov., is from Ilocos Norte province on Luzon Island and has the—for Nepenthes—unusual ecological preference to grow in dense vegetation in deep shade. The other new species is from Mount Hamiguitan in Davao Oriental province on Mindanao Island. With this new entry, Mount Hamiguitan is now home to four endemic species (N. peltata, N. micramphora, N. hamiguitanensis, N. justinae sp. nov.). Furthermore, we provide an emended description of N. ramos based on field data. Nepenthes kurata is synonymized here with N. ramos. PMID:27164153

  20. [Funding, public spending and management of health resources: the current situation in a Brazilian state].

    PubMed

    Leite, Valéria Rodrigues; Lima, Kenio Costa; de Vasconcelos, Cipriano Maia

    2012-07-01

    This article investigates the issue of funding and the decentralization process in order to examine the composition, application and management of resources in the healthcare area. The sample surveyed involved 14 municipalities in the state of Rio Grande do Norte, Brazil. The research involved data gathering of financial transfers, the municipality's own resources and primary healthcare expenses. Management analysis included a survey of local managers and counselors. It was seen that the Unified Health System is funded mainly by federal transfers and municipal revenues and to a far lesser extent by state resources. Funds have been applied predominantly in primary healthcare. The management process saw centralization of actions in the city governments. Municipal secretarial offices and councils comply partially with legislation, though they have problems with autonomy and social control. The results show that planning and management instruments are limited, due to the contradictions inherent to the institutional, political and cultural context of the region.

  1. Additions to Philippine Slender Skinks of the Brachymeles bonitae Complex (Reptilia: Squamata: Scincidae) II: a new species from the northern Philippines.

    PubMed

    Siler, Cameron D; Davis, Drew R; Freitas, Elyse S; Huron, Nicholas A; Geheber, Aaron D; Watters, Jessa L; Penrod, Michelle L; Papeș, Monica; Amrein, Andrew; Anwar, Alyssa; Cooper, Dontae; Hein, Tucker; Manning, Annalisa; Patel, Neeral; Pinaroc, Lauren; Diesmos, Arvin C; Diesmos, Mae L; Oliveros, Carl H; Brown, Rafe M

    2016-01-01

    We describe a new digitless scincid lizard of the genus Brachymeles from northern Luzon and Camiguin Norte islands in the Philippines. This species belongs to the Brachymeles bonitae Complex, and both molecular and morphological data confirm that this species is distinct from all other congeners. Formerly considered to be a single widespread species, this group of species has been the focus of recent systematic reviews. Here we describe a new species in the B. bonitae Complex, recognized currently to constitute five species. Brachymeles ilocandia sp. nov. is the second digitless and the seventeenth non-pentadactyl species in genus. The description of this species brings the total number of species in the genus to 40, and provides new insight into unique distribution patterns of species of the northern Philippines.

  2. [Prevalence of vitamin d deficiency and insuffiency and associated factors in pregnant women of northern Spain].

    PubMed

    Rodríguez-Dehli, Ana Cristina; Riaño Galán, Isolina; Fernández-Somoano, Ana; Navarrete-Muñoz, Eva María; Espada, Mercedes; Vioque, Jesús; Tardón, Adonina

    2015-04-01

    Introducción y objetivos: El déficit de vitamina D durante el embarazo se ha relacionado con sucesos adversos durante la gestación y con el desarrollo infantil postnatal. En este estudio examinamos los niveles plasmáticos de vitamina D [25(OH)D3] y los factores asociados a su deficiencia e insuficiencia plasmática en embarazadas del norte de España. Material y método: Se han analizado los datos de 453 gestantes participantes en la cohorte INMA-Asturias a las que se determinó la 25(OH)D3 mediante cromatografía líquida de alta resolución. Se ha estimado la ingesta dietética de vitamina D mediante un cuestionario de frecuencia alimentaria validado. Se han estimado las prevalencias de deficiencia [25(OH)D3.

  3. Effect of asphaltene deposition on the internal corrosion in the oil and gas industry

    SciTech Connect

    Palacios T, C.A.; Morales, J.L.; Viloria, A.

    1997-08-01

    Crude oil from Norte de Monagas field, in Venezuela, contains large amounts of asphaltenes. Some of them are very unstable with a tendency to precipitate. Because liquid is carried over from the separation process in the flow stations, asphaltenes are also present in the gas gathering and transmission lines, precipitating on the inner wall of pipelines. The gas gathering and transmission lines contain gas with high partial pressures of CO{sub 2}, some H{sub 2}S and are water saturated; therefore, inhibitors are used to control internal corrosion. There is uncertainty on how inhibitors perform in the presence of asphaltene deposition. The purpose of this paper is to describe the causes that enhance asphaltene deposition in gas pipelines and present some results from an ongoing research project carried out by the Venezuelan Oil Companies.

  4. Occupation and factors associated with exposure to the sun among beach workers.

    PubMed

    Lucena, Eudes Euler de Souza; Costa, Danielle Clarisse Barbosa; da Silveira, Ericka Janine Dantas; Lima, Kenio Costa

    2014-04-01

    Subjects were selected from five urban beaches to characterize the type of work conducted on urban beaches in the city of Natal, state of Rio Grande do Norte, Brazil, and determine potential associated factors among workers exposed to the sun. Data collection was based on a validated questionnaire. Results were obtained for 362 workers. Individuals were predominantly male (72.6%) who worked under direct exposure to the sun (87.8%). Almost 95% had no more than 6 years of schooling and 87.91% earned an average monthly income of $318.75 dollars or more. Photoprotection was reported by 80.1%, among which sunscreen and caps/hats were predominant. Around 25% smoked and more than half did not consume alcohol. Male gender, no more than 6 years of schooling, daily exposure for up to 6 hours and use of photoprotection were the factors associated with the outdoor work category.

  5. Ergonomics and accessibility for people with visual impairment in hotels.

    PubMed

    Dos Santos, Larissa Nascimento; de Carvalho, Ricardo José Matos

    2012-01-01

    This article presents a diagnosis of luxury or superior hotels in the city of Natal, located in the state of Rio Grande do Norte, in northeastern Brazil, in what concerns accessibility to the visually impaired. The main objective is to present the guiding principles to design actions and interventions that must be considered in the preparation or revision of technical standards and manuals of good practice in accessibility related to people with visual impairments who are hotel users. The survey showed that the hotels do not meet the normative indications of accessibility, their facilities are in-accessible (have prevented access) or of reduced accessibility and its employees are not prepared to provide adequate hospital services for people with visual impairment. It was concluded that some of the accessibility problems faced by people with visual impairments are also faced by people in general.

  6. A new species of Dolicholana Bruce, 1986 (Isopoda, Cymothoidea, Cirolanidae), the first record of the genus from the Atlantic Ocean.

    PubMed

    Paiva, Ricardo J C; Souza-Filho, Jesser F

    2015-11-05

    The isopod genus Dolicholana Bruce, 1986, previously known only from the Indo-West Pacific, is recorded for the first time from the Atlantic Ocean. A new species, Dolicholana brucei sp. nov., is described from the northeastern Brazilian coast, and is the first record of the genus Dolicholana Bruce, 1986 for the Atlantic Ocean. The material was collected from the upper part of the continental slope off Rio Grande do Norte (150 m depth). The new species is characterized by pereopod 1 propodal palm being crenulate, ischium of pereopod 1 and 2 with a plumose seta on the anterior margin, peduncle of pleopods 3-5 bearing an accessory lobe acute on the distolateral angle, pleotelson posterior margin being rounded, and the uropodal endopod and the exopod apices distally being rounded. A revised key to the genus is provided.

  7. [Cartography of healthcare for pregnant women].

    PubMed

    Silva, Raimunda Magalhães da; Costa, Milena Silva; Matsue, Regina Yoshie; Sousa, Girliani Silva de; Catrib, Ana Maria Fontenelle; Vieira, Luiza Jane Eyre de Souza

    2012-03-01

    This work uses cartography as a method for mapping the trajectory of primary healthcare provided to pregnant women. The scope of the study comprises 9 Basic Healthcare Units located in the city of Juazeiro do Norte in the State of Ceará. In all, fifteen women in the 37th to 39th week of pregnancy were selected. Interviews were conducted with these women during the period from January to June 2010. The cartographic findings were depicted in stages in the flowchart, which exposed lacunas in prenatal healthcare, such as the low number of oncotic cytology exams conducted and the lack of educational counseling. Nevertheless, in the interviews, a significant number of pregnant women expressed satisfaction with the prenatal care provided. The good relationships developed between the healthcare professionals and the pregnant women were the main reason that led them to continue the treatment. This fact reinforces the importance of dialogue between these two actors for the success of prenatal healthcare.

  8. Two New Cave-Dwelling Species of the Short-Tailed Whipscorpion Genus Rowlandius (Arachnida: Schizomida: Hubbardiidae) from Northeastern Brazil, with Comments on Male Dimorphism

    PubMed Central

    Santos, Adalberto J.; Ferreira, Rodrigo Lopes; Buzatto, Bruno A.

    2013-01-01

    Two new species of the arachnid order Schizomida, Rowlandius ubajara sp.nov. and Rowlandius potiguar sp.nov., are described based on both male and female specimens collected in caves from northeastern Brazil. Rowlandius ubajara is known only from the Ubajara Cave, in the state of Ceará; R. potiguar is recorded from 20 caves of the Apodi Limestone Group, in the state of Rio Grande do Norte. A remarkable dimorphism in male pedipalp length is described and analyzed in R. potiguar. The distribution of male pedipalp length is clearly bimodal in the species, but the two male morphs (homeomorphic and heteromorphic) present some overlap in the sizes of this structure. Moreover, males show a steeper allometry in pedipalp length than females, indicating that this trait is under a different selective regime in males and in females. PMID:23723989

  9. More on the spider genus Xeropigo O.P.-Cambridge (Araneae, Corinnidae, Corinninae): seven new species and new records from Brazil.

    PubMed

    Carvalho, Leonardo S; Shimano, Yulie; Candiani, David F; Bonaldo, Alexandre B

    2016-01-01

    Seven new species of the spider genus Xeropigo O. P.-Cambridge are described from Brazil, increasing the genus member list up to 16 species. X. piripiri n. sp., X. aitatu n. sp., and X. cajuina n. sp. are described from the state of Piauí. X. crispim n. sp. is described from the states of Ceará, Piauí, and Maranhão. X. oxente n. sp. is described from the state of Rio Grande do Norte. X. canga n. sp. is described from the state of Minas Gerais. X. ufo n. sp. is described from the state of Mato Grosso. The geographical distribution of X. tridentiger, X. camilae, X. pachitea, and X. perene is updated. A key to all species of Xeropigo is presented and possible relationships among all species of the genus are discussed. PMID:27395095

  10. Relationship between macroinvertebrate fauna and environmental variables in small streams of the Dominican Republic.

    PubMed

    Soldner, Michael; Stephen, Ian; Ramos, Litay; Angus, Robert; Wells, N Claire; Grosso, Albania; Crane, Mark

    2004-02-01

    Field assessment methods for freshwater macroinvertebrates and water quality in tropical small-island states were assessed in the Dominican Republic. Macroinvertebrate samples were collected from 26 river sites within the Dominican Republic's Yaque del Norte river catchment. Environmental data on geographical, physical and chemical variables were also collected from each site. The Biological Monitoring Working Party score and total numbers of Ephemeroptera and Trichoptera were calculated for each site. Physico-chemical and biological data sets were ordinated by principal components analysis and non-parametric multi-dimensional scaling, and the biotic and abiotic data sets were correlated to determine the most influential factors determining site similarities. Macroinvertebrate assemblage structure was correlated with declining water quality: however, a high correlation between water quality and altitude confounded an unqualified interpretation of impairment.

  11. First record of Sarcoramphus Dumeril 1806 (Ciconiiformes: Vulturidae) from the Pleistocene of Buenos Aires province, Argentina

    NASA Astrophysics Data System (ADS)

    Noriega, Jorge I.; Areta, Juan I.

    2005-10-01

    The finding of an incomplete specimen of Sarcoramphus papa (Linné 1758), commonly known as the King Vulture, from the locality of Camet Norte (Buenos Aires province) in Argentina is reported. The bearing level is referred to the Late Pleistocene Santa Clara Formation (Late Lujanian). Sarcoramphus papa is actually a dweller of undisturbed areas of tropical rainforest and humid tropical and subtropical forests in Central and South America, ranging from Mexico to northern Argentina. It is rarely found in large open areas such as steppes and grasslands and/or habitats with extremely low temperatures in winter. The fossiliferous locality is located geographically more than 700 km south of the species' southern distributional limit and thus far away from suitable habitats for its survival. This fossil record contradicts previous paleoenvironmental reconstructions for the same place and time, suggesting a mixed community with some arboreal structures capable of holding this taxon.

  12. Integrating Photovoltaic Systems into Low-Income Housing Developments: A Case Study on the Creation of a New Residential Financing Model and Low-Income Resident Job Training Program, September 2011 (Brochure)

    SciTech Connect

    Dean, J.; Smith-Dreier, C.; Mekonnen, G.; Hawthorne, W.

    2011-09-01

    This case study covers the process of successfully integrating photovoltaic (PV) systems into a low-income housing development in northeast Denver, Colorado, focusing specifically on a new financing model and job training. The Northeast Denver Housing Center (NDHC), working in cooperation with Del Norte Neighborhood Development Corporation, Groundwork Denver, and the National Renewable Energy Laboratory (NREL), was able to finance the PV system installations by blending private equity funding with utility rebates, federal tax credits, and public sector funding. A grant provided by the Governor's Energy Office allowed for the creation of the new financing model. In addition, the program incorporated an innovative low-income job training program and an energy conservation incentive program.

  13. Quality of life and people living with AIDS: relationship with sociodemographic and health aspects1

    PubMed Central

    da Costa, Tadeu Lessa; de Oliveira, Denize Cristina; Gomes, Antonio Marcos Tosoli; Formozo, Gláucia Alexandre

    2014-01-01

    OBJECTIVE: to analyze the relationship of sociodemographic and health dimensions with the quality of life of people living with the human immunodeficiency virus. METHOD: descriptive and quantitative study. The subjects were 131 seropositive people treated in a specialized center of the Norte-Fluminense municipality, Brazil. A form with sociodemographic and health data was applied, as well as the World Health Organization instrument for the assessment of the quality of life of people with the human immunodeficiency virus. RESULTS: the statistical analysis revealed a significant difference in the assessment of the various dimensions of quality of life by the subjects for gender, education, employment, personal income, medical condition, self-perception of sickness, history of hospitalizations, and bodily alterations due to the antiretroviral drugs. CONCLUSION: professional nursing and health care, as well as public policies in the area, should valorize the quality of life approach, considering the conditions related to its configuration. PMID:25296141

  14. Development and characterization of 24 polymorphic microsatellite loci for the freshwater fish Ichthyoelephas longirostris (Characiformes: Prochilodontidae)

    PubMed Central

    Landínez-García, Ricardo M.

    2016-01-01

    The Neotropical freshwater fish Ichthyoelephas longirostris (Characiformes: prochilodontidae) is a short-distance migratory species endemic to Colombia. This study developed for the first time a set of 24 polymorphic microsatellite loci by using next-generation sequencing to explore the population genetics of this commercially exploited species. Nineteen of these loci were used to assess the genetic diversity and structure of 193 I. longirostris in three Colombian rivers of the Magdalena basin. Results showed that a single genetic stock circulates in the Cauca River, whereas other single different genetic stock is present in the rivers Samaná Norte and San Bartolomé-Magdalena. Additionally, I. longirostris was genetically different among and across rivers. This first insight about the population genetic structure of I. longirostris is crucial for monitoring the genetic diversity, the management and conservation of its populations, and complement the genetic studies in Prochilodontidae. PMID:27635363

  15. Three new species of Misionella from northern Brazil (Araneae, Haplogynae, Filistatidae)

    PubMed Central

    Brescovit, Antonio D.; Magalhaes, Ivan L. F.; Cizauskas, Igor

    2016-01-01

    Abstract Three new species of the genus Misionella are described from Brazil: Misionella carajas sp. n. and Misionella aikewara sp. n. from caves in the states of Pará and Tocantins and Misionella pallida sp. n. from natural and synanthropic dry areas in the states of Piauí, Maranhão, Rio Grande do Norte and Bahia. These species seem to belong to a distinct group within the genus; the males have an elongate palpal tibia and bulb, a pair of characteristic and hirsute macrosetae in the second metatarsus and the females have internal genitalia with only one pair of spermathecae, with relatively short ducts, lacking the auxiliary receptacles. Their phylogenetic placement and geographic distribution are briefly discussed. PMID:27408535

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

    NASA Astrophysics Data System (ADS)

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

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

  17. An experimental study for biological nitrogen removal and control strategies in a sequencing batch reactor (SBR).

    PubMed

    Manga, J; Venegas, C; Palma-Acosta, M J; Abad, D

    2007-07-01

    The aim of this work is to present an overview about an experimental study for biological nitrogen removal implemented in a pilot-scale plant, located in the Universidad Del Norte in Barranquilla, Colombia. This plant was studied in two different periods. The first period, which was carried out in 90 days, was dedicated to study the influence of the daily variations on the influent and effluent wastewater, and prove some control routines for nitrogen removal. In the second period, which was carried out in 120 days, the removal process was optimized with the addition of acetic acid as an external carbon source, and the implementation of the final control strategy was performed based on the results of the previous period.

  18. A new species of Lissodendoryx (Anomodoryx) Burton, 1934 (Porifera: Demospongiae: Poecilosclerida) from deeper waters off the Atlantic coast of Brazil.

    PubMed

    Cavalcanti, Thaynã; Santos, George Garcia; Pinheiro, Ulisses

    2014-11-18

    The members of Lissodendoryx Topsent, 1892a are recognized by a spicule combination of ectosomal tylotes or strongyles, isodictyal reticulate architecture, arcuate isochelae and sigmas (Hofman & Van Soest 1995; Van Soest 2002). Five subgenera of Lissodendoryx, are recognized (Van Soest 2002): Lissodendoryx (Acanthodoryx) Lévi, 1961, L. (Anomodoryx) Burton, 1934, L. (Ectyodoryx) Lundbeck, 1909, L. (Lissodendoryx) Topsent, 1892a, and L. (Waldoschmittia) de Laubenfels, 1936. Lissodendoryx (Anomodoryx) is defined by the presence of a single megasclere type (Van Soest 2002). Currently has six recognized species (Van Soest et al. 2014) including two from Brazil (Muricy et al. 2011): L. (A.) recife (Boury-Esnault, 1973) and L. (A.) tylota (Boury-Esnault, 1973). In this paper, a new species of L. (Anomodoryx) is described from the mesophotic zone off Bacia Potiguar (Rio Grande do Norte State, Northeastern Brazil). The specimen was preserved in ethanol 80% and deposited in the Porifera Collection of the Universidade Federal de Pernambuco (UFPEPOR).

  19. North beach (Nazaré) sand tracer experiment

    NASA Astrophysics Data System (ADS)

    Duarte, João; Taborda, Rui; Ribeiro, Mónica; Cascalho, João; Silva, Ana; Bosnic, Ivana

    2014-05-01

    The littoral in the vicinity of Nazaré (West Portuguese coast) is characterized by two distinct coastal stretches separated by Nazaré headland: a northern sector (Norte beach) characterized by a high energetic continuous sandy beach and a southern sector (Nazaré bay beach) that corresponds to an embayed beach, sheltered by the Nazaré headland. The bay is a geomorphological expression of the Nazaré canyon head, which acts as powerful sediment sink, capturing the large longshore net southward transport at Norte beach generated by the north Atlantic high energetic swell. The northern side of the canyon head is carved on highly resistant Cretaceous limestone sustaining an underwater vertical relief that emerges on the Nazaré headland, creating a unusual nearshore wave pattern. This wave pattern not only concentrates high energy levels at the Norte beach but also contributes to local complex longshore drift gradients capable of inducing beach seasonal cross-shore variations of more than 200 m. The main factors that influence local sediment budget are: (1) canyon head capturing and (2) headland sediment bypassing. To obtain a direct measure of the net longshore drift at Norte beach (upstream boundary of the system) a large scale fluorescent tracer experiment was performed. The data will be used to validate longshore transport formulas in a high energetic environment and to access Nazaré canyon head sediment loss. Considering the anticipation of high transport rates, approximately 10 tonnes of native sand where coated with orange fluorescent ink using a set of concrete mixers. The experiment took place on the 9th to 15th September 2013 period and followed the continuous injection method (CIM). The CIM approach was justified by the expected high energy levels that inhibits sediment sampling across the surf zone. During the tracer injection procedure (approx. 5 hours), sediment sampling was performed at 13 sites along a rectilinear coastal stretch extended through

  20. Development and characterization of 24 polymorphic microsatellite loci for the freshwater fish Ichthyoelephas longirostris (Characiformes: Prochilodontidae)

    PubMed Central

    Landínez-García, Ricardo M.

    2016-01-01

    The Neotropical freshwater fish Ichthyoelephas longirostris (Characiformes: prochilodontidae) is a short-distance migratory species endemic to Colombia. This study developed for the first time a set of 24 polymorphic microsatellite loci by using next-generation sequencing to explore the population genetics of this commercially exploited species. Nineteen of these loci were used to assess the genetic diversity and structure of 193 I. longirostris in three Colombian rivers of the Magdalena basin. Results showed that a single genetic stock circulates in the Cauca River, whereas other single different genetic stock is present in the rivers Samaná Norte and San Bartolomé-Magdalena. Additionally, I. longirostris was genetically different among and across rivers. This first insight about the population genetic structure of I. longirostris is crucial for monitoring the genetic diversity, the management and conservation of its populations, and complement the genetic studies in Prochilodontidae.

  1. Radiological Characterization of Cerebral Phenotype in Newborn Microcephaly Cases from 2015 Outbreak in Brazil

    PubMed Central

    Ramalho Rocha, Yuri Raoni; Cavalcanti Costa, José Ricardo; Almeida Costa, Pericles; Maia, Gessica; Vasconcelos, Rafael de Medeiros; Ramos Tejo, Cynthia; Martins Batista, Rafaella; Lima Neto, Manoel; Martins de Lima, Gustavo Graco; Negromonte, Francisco; Borba, Marcelle; Bezerra Jeronimo, Selma Maria; Sequerra, Eduardo Bouth; Moreira Neto, Manuel

    2016-01-01

    Introduction: Brazil is facing, since October of 2015, an outbreak of microcephalic fetuses. This outbreak is correlated with the beginning of circulation of Zika virus (ZIKV) in the country. Although it is clear that the size of the head is diminished in these fetuses, the brain phenotype associated with these malformations is unknown. Methods: We collected computed tomography images of the microcephaly cases from the region of Natal, Rio Grande do Norte, from September 2015 to February 2016. Findings: The microcephalies derived from the current outbreak are associated with intracerebral calcifications, malformation of the ventricular system, migratory disorders in the telencephalon and, in a lower frequency, malformation of the cerebellum and brainstem. Discussion: The characteristics described herein are not usually found in other types of microcephaly. We suggest that this work can be used as a guideline to identify microcephaly cases associated to the current outbreak. PMID:27617166

  2. An experimental study for biological nitrogen removal and control strategies in a sequencing batch reactor (SBR).

    PubMed

    Manga, J; Venegas, C; Palma-Acosta, M J; Abad, D

    2007-07-01

    The aim of this work is to present an overview about an experimental study for biological nitrogen removal implemented in a pilot-scale plant, located in the Universidad Del Norte in Barranquilla, Colombia. This plant was studied in two different periods. The first period, which was carried out in 90 days, was dedicated to study the influence of the daily variations on the influent and effluent wastewater, and prove some control routines for nitrogen removal. In the second period, which was carried out in 120 days, the removal process was optimized with the addition of acetic acid as an external carbon source, and the implementation of the final control strategy was performed based on the results of the previous period. PMID:17674653

  3. Informe sobre el avance del proyecto de determinaciones de V sen i para todas las estrellas B más brillantes que 6.5 mag.

    NASA Astrophysics Data System (ADS)

    Abt, H.; Levato, H.

    Se ha finalizado con la determinación de V sen i para todas las estrellas B más brillantes que 6.5 mag y al norte de -30 grados de declinación. Esta muestra involucra casi 1000 estrellas. Las observaciones fueron realizadas desde KPNO. Mientras tanto, se ha completado desde CASLEO la observación de 350 estrellas B más brillantes que 6.5 mag. al sur de -30 grados. Además de la determinación de la rotación axial se determinan, en los casos posibles, los anchos equivalentes de las líneas 4471 Ådel He I y 4481 Ådel Mg II.

  4. Two New Nepenthes Species from the Philippines and an Emended Description of Nepenthes ramos.

    PubMed

    Gronemeyer, Thomas; Suarez, Wally; Nuytemans, Herman; Calaramo, Michael; Wistuba, Andreas; Mey, François S; Amoroso, Victor B

    2016-01-01

    With 50 species of the genus Nepenthes L. currently described from the Philippines, it is without doubt that the country, along with the islands of Sumatra (Indonesia) and Borneo (Indonesia, Malaysia, Brunei), should be considered the center of diversity of the genus. In this work, we describe two new species. One species, N. aenigma sp. nov., is from Ilocos Norte province on Luzon Island and has the-for Nepenthes-unusual ecological preference to grow in dense vegetation in deep shade. The other new species is from Mount Hamiguitan in Davao Oriental province on Mindanao Island. With this new entry, Mount Hamiguitan is now home to four endemic species (N. peltata, N. micramphora, N. hamiguitanensis, N. justinae sp. nov.). Furthermore, we provide an emended description of N. ramos based on field data. Nepenthes kurata is synonymized here with N. ramos. PMID:27164153

  5. Costa Rican environmental service payments: The use of a financial instrument in participatory forest management.

    PubMed

    Miranda, Miriam; Dieperink, Carel; Glasbergen, Pieter

    2006-10-01

    The core element of the Costa Rican forestry policy is a financial instrument called the environmental service payment. This instrument rewards forest owners for the environmental services (the mitigation of greenhouse gases, the protection of watersheds and scenic beauty, and the development of biodiversity) their forests provide. In this article, the experiences with this new instrument are analyzed by focusing on the way interests are represented and access is granted, the openness of information exchange, whether social learning occurred, and whether decision-making authority is shared. The analysis is based on a survey conducted in the Huetar Norte Region and on in-depth interviews with the major stakeholders. The Costa Rican case indicates that financial instruments can be used to share responsibilities and that stakeholders can successfully cooperate on forest issues. It also shows that such a participatory approach is only promising if certain cultural, economic, organizational, and political conditions are met.

  6. Development and characterization of 24 polymorphic microsatellite loci for the freshwater fish Ichthyoelephas longirostris (Characiformes: Prochilodontidae).

    PubMed

    Landínez-García, Ricardo M; Márquez, Edna J

    2016-01-01

    The Neotropical freshwater fish Ichthyoelephas longirostris (Characiformes: prochilodontidae) is a short-distance migratory species endemic to Colombia. This study developed for the first time a set of 24 polymorphic microsatellite loci by using next-generation sequencing to explore the population genetics of this commercially exploited species. Nineteen of these loci were used to assess the genetic diversity and structure of 193 I. longirostris in three Colombian rivers of the Magdalena basin. Results showed that a single genetic stock circulates in the Cauca River, whereas other single different genetic stock is present in the rivers Samaná Norte and San Bartolomé-Magdalena. Additionally, I. longirostris was genetically different among and across rivers. This first insight about the population genetic structure of I. longirostris is crucial for monitoring the genetic diversity, the management and conservation of its populations, and complement the genetic studies in Prochilodontidae. PMID:27635363

  7. More on the spider genus Xeropigo O.P.-Cambridge (Araneae, Corinnidae, Corinninae): seven new species and new records from Brazil.

    PubMed

    Carvalho, Leonardo S; Shimano, Yulie; Candiani, David F; Bonaldo, Alexandre B

    2016-05-17

    Seven new species of the spider genus Xeropigo O. P.-Cambridge are described from Brazil, increasing the genus member list up to 16 species. X. piripiri n. sp., X. aitatu n. sp., and X. cajuina n. sp. are described from the state of Piauí. X. crispim n. sp. is described from the states of Ceará, Piauí, and Maranhão. X. oxente n. sp. is described from the state of Rio Grande do Norte. X. canga n. sp. is described from the state of Minas Gerais. X. ufo n. sp. is described from the state of Mato Grosso. The geographical distribution of X. tridentiger, X. camilae, X. pachitea, and X. perene is updated. A key to all species of Xeropigo is presented and possible relationships among all species of the genus are discussed.

  8. [Social representations about occupational risk in the perspective of the health worker].

    PubMed

    Oliveira, Joana D'Arc de Souza; Ferreira, Aurigena Antunes Araújo; Costa Feitosa, Maria do Socorro; Paredes Moreira, Maria Adelaide Silva

    2009-03-01

    We aimed to identify the meanings constructed about occupational risk by health workers through the structural approach to social representation. 220 health professionals from a public hospital in Natal, Rio Grande do Norte, Brazil, participated in this research. The technique of free evocation of words was used and data were examined through an articulated analysis of frequency average and evocation order Results shows that central systems have different compositions in three groups: disease and death for doctors, perforating and danger for nurses and contamination, disease, infection and danger for dentists. The complexity of bond among work and risk suggests that strategies and alternatives of actions might be operationalized with integration of different professional categories and fields of knowledge towards a common objective starting from an interdisciplinary space and expanding the awareness level of these professionals concerning to consequences of their practices to health. PMID:19653562

  9. Radiological Characterization of Cerebral Phenotype in Newborn Microcephaly Cases from 2015 Outbreak in Brazil

    PubMed Central

    Ramalho Rocha, Yuri Raoni; Cavalcanti Costa, José Ricardo; Almeida Costa, Pericles; Maia, Gessica; Vasconcelos, Rafael de Medeiros; Ramos Tejo, Cynthia; Martins Batista, Rafaella; Lima Neto, Manoel; Martins de Lima, Gustavo Graco; Negromonte, Francisco; Borba, Marcelle; Bezerra Jeronimo, Selma Maria; Sequerra, Eduardo Bouth; Moreira Neto, Manuel

    2016-01-01

    Introduction: Brazil is facing, since October of 2015, an outbreak of microcephalic fetuses. This outbreak is correlated with the beginning of circulation of Zika virus (ZIKV) in the country. Although it is clear that the size of the head is diminished in these fetuses, the brain phenotype associated with these malformations is unknown. Methods: We collected computed tomography images of the microcephaly cases from the region of Natal, Rio Grande do Norte, from September 2015 to February 2016. Findings: The microcephalies derived from the current outbreak are associated with intracerebral calcifications, malformation of the ventricular system, migratory disorders in the telencephalon and, in a lower frequency, malformation of the cerebellum and brainstem. Discussion: The characteristics described herein are not usually found in other types of microcephaly. We suggest that this work can be used as a guideline to identify microcephaly cases associated to the current outbreak.

  10. Effect of asphaltene deposition on the internal corrosion in transmission lines

    SciTech Connect

    Morales, J.L.; Viloria, A.; Palacios T, C.A.

    1996-12-31

    Crude oil from Norte de Monagas field, in Venezuela, contains large amounts of asphaltenes, some of them are very unstable with tendency to precipitate. Because liquid is carried over from the separation process in the flow stations, asphaltenes are also present in the gas gathering and transmission lines, precipitating on inner wall of pipelines. The gas gathering and transmission lines contain gas with high partial pressures of CO{sub 2}, some H{sub 2}S and are water saturated; therefore inhibitors are used to control the internal corrosion. There is uncertainty on how inhibitors perform in the presence of asphaltene deposition. To protect the pipelines from external corrosion, cathodic protection is used. Since asphaltenes have polar properties, there exists an uncertainty on whether it enhances asphaltene precipitation and deposition. The purpose of this paper to describe the causes that enhance asphaltene deposition on gas and some of the preliminary result from an ongoing research project carried out by Intevep and Corpoven.

  11. Three new species of Misionella from northern Brazil (Araneae, Haplogynae, Filistatidae).

    PubMed

    Brescovit, Antonio D; Magalhaes, Ivan L F; Cizauskas, Igor

    2016-01-01

    Three new species of the genus Misionella are described from Brazil: Misionella carajas sp. n. and Misionella aikewara sp. n. from caves in the states of Pará and Tocantins and Misionella pallida sp. n. from natural and synanthropic dry areas in the states of Piauí, Maranhão, Rio Grande do Norte and Bahia. These species seem to belong to a distinct group within the genus; the males have an elongate palpal tibia and bulb, a pair of characteristic and hirsute macrosetae in the second metatarsus and the females have internal genitalia with only one pair of spermathecae, with relatively short ducts, lacking the auxiliary receptacles. Their phylogenetic placement and geographic distribution are briefly discussed. PMID:27408535

  12. A review of recent glaciological studies at the dormant Citlaltépetl Volcano (Mexico)

    NASA Astrophysics Data System (ADS)

    Cortes Ramos, J.; Ontiveros-Gonzalez, G.; Delgado Granados, H.

    2013-05-01

    We present the most recent instrumentation, analysis and state of the art on glaciological studies of Glaciar Norte on Citlaltépetl Volcano. The results described here are the result of glacier activity at a dormant volcano with very low activity such as slight vapor emissions. In contrast with Popocatépetl Volcano's glaciers, where the climatic signals were obscured by the eruptive activity, at Citlaltépetl Volcano the glacier represents a good indicator of the climatic change. Since the volcanic activity on Citlaltépetl consists only on minor diffuse gas emissions, this work shows how meteorological, glaciological, and energy exchange analyses allow the characterization of the behavior of this kind of mountain glaciers. Based on these results, we can tackle the separation of climatic vs. volcanic component at other glacial systems in Mexico.

  13. Review of the Nearctic genus Lacconotus LeConte (Coleoptera, Mycteridae, Eurypinae)

    PubMed Central

    Pollock, Darren; Majka, Christopher G.

    2012-01-01

    Abstract Lacconotus LeConte, the sole Nearctic representative of the eurypine Mycteridae, is revised, based on morphological features of adults. The following syn. n. is proposed: Lacconotus pallidus Van Dyke, 1928 = Lacconotus pinicola Horn, 1879. The former is a light-colored form with a southern California distribution. A subgen. n., Alcconotus, is described for Lacconotus pinicola, producing the following comb. n.: Lacconotus (Alcconotus) pinicola (Horn). A lectotype is designated for Lacconotus pinicola. A key separating the two subgenera and species is provided, as are photographs and illustrations of salient structures of adults, and maps showing collection localities. Lacconotus punctatus is newly recorded in Alabama, Arkansas, Massachusetts, Oklahoma, Texas, and Wisconsin; Lacconotus pinicola is newly recorded in Arizona and Utah in the USA, and Baja California Norte in Mexico. Phenology information shows a north-to-south gradation in occurrence time. PMID:22303123

  14. A new species of Espeletiopsis (Millerieae, Asteraceae) from Colombia

    PubMed Central

    Diazgranados, Mauricio; Sánchez, Luis Roberto

    2013-01-01

    Abstract A new species of Espeletiopsis was found in two small páramos of Norte de Santander, Colombia. The species is named Espeletiopsis diazii honoring the contributions of Santiago Díaz-Piedrahita in recognition of his vast knowledge of the Compositae in Colombia. This is a very distinctive species, markedly different from most of the Espeletiopsis present in Colombia. The new species is closely related to Espeletiopsis caldasii and Espeletiopsis santanderensis, but differs in having (1–)4–6(–7) capitula, with very short peduncles, and capitula arranged in a compact or densely glomerate cyme. With a total distribution area of less than 75 km2, this species is probably critically endangered or imperiled. PMID:24399905

  15. Zika virus in Brazil and the danger of infestation by Aedes (Stegomyia) mosquitoes.

    PubMed

    Marcondes, Carlos Brisola; Ximenes, Maria de Fátima Freire de Melo

    2016-02-01

    Zika virus, already widely distributed in Africa and Asia, was recently reported in two Northeastern Brazilian: State of Bahia and State of Rio Grande do Norte, and one Southeastern: State of São Paulo. This finding adds a potentially noxious virus to a list of several other viruses that are widely transmitted by Aedes (Stegomyia) aegypti and Aedes (Stegomyia) albopictus in Brazil. The pathology and epidemiology, including the distribution and vectors associated with Zika virus, are reviewed. This review is focused on viruses transmitted by Aedes (Stegomyia) mosquitoes, including dengue, Chikungunya, Zika, Mayaro, and yellow fever virus, to emphasize the risks of occurrence for these arboviruses in Brazil and neighboring countries. Other species of Aedes (Stegomyia) are discussed, emphasizing their involvement in arbovirus transmission and the possibility of adaptation to environments modified by human activities and introduction in Brazil.

  16. Occurrence of antibodies to Toxoplasma gondii in mules and donkeys in the northeast of Brazil.

    PubMed

    de Oliveira, Elizete; de Albuquerque, Pedro Paulo Feitosa; de Souza Neto, Orestes Luiz; Faria, Eduardo Bento; Júnior, José Wilton Pinheiro; Mota, Rinaldo Aparecido

    2013-04-01

    The aim of the present study was to investigate antibodies to Toxoplasma gondii in the serum of mules and donkeys bred in the northeast of Brazil. In total, 483 samples were used (395 mules and 88 donkeys) from 4 states (Pernambuco, Rio Grande do Norte, Paraíba, and Sergipe). The indirect immunofluorescence reaction (IFI) technique was used to investigate antibodies to T. gondii with a cut-off point of 64. Positive frequencies of 23.8% and 43.2% were recorded for mules and donkeys, respectively. The state of Pernambuco had the highest prevalence of positive samples (29%) with statistically significant differences for species (P < 0.001) and state (P = 0.048). This is the first study of antibodies to T. gondii in mules and donkeys in these 4 states of the northeastern region of Brazil and serves as a warning to health authorities regarding the risks of ingesting equine meat.

  17. Tungsten resources of Brazil

    USGS Publications Warehouse

    White, Max Gregg

    1974-01-01

    Brazilian tungsten production, 85 percent of which is exported, comes almost entirely from scheelite-bearing tactites in northeast Brazil, and has reached an annual rate of about 2,000 metric tons (2,200 short tons) of scheelite concentrate with 70 percent WO3. Scheelite ore reserves, located principally in the State of Rio Grande do Norte, are estimated to be as high as 8,300,000 tons (9,100,000 short tons) containing 0.7 percent WO3. Minor deposits (or those about which only minimal information is available) of wolframite, with which some cassiterite is associated, are located in Sao Paulo, Santa Catarina, and Rio Grande do Sul. Both the scheelite and the wolframite deposits are considered . to be late Precambrian A (620 to 900 m.y.) or early Cambrian in age.

  18. Physical setting and characteristics of high-sulfidation epithermal gold-silver deposits of the Andes and controls on mineralizing processes

    NASA Astrophysics Data System (ADS)

    Bissig, T.

    2013-05-01

    Gold and silver mineralization in the vast majority of Andean high-sulfidation epithermal deposits occurs 200-700 m below low relief but high elevation landforms situated at 3500 to 5200 m a.s.l. Stratovolcanoes, in contrast, are uncommon ore hosts. Most deposits are middle Miocene and younger and include the California-Vetas mining district ( Colombia), Quimsaocha (Ecuador), Yanacocha, Lagunas Norte, Pierina, Cerro de Pasco (Peru), Pascua-Lama, Veladero, El Indio and Tambo (Chile/Argentina), jointly accounting for > 130 Moz Au resources. Older examples are restricted to the Atacama Desert and include the middle Eocene El Guanaco and El Hueso and the late Oligocene La Coipa deposits. Mineralization coincides with transpressional tectonics and surface uplift. Volcanic rocks coincident with mineralization are volumetrically restricted or absent, although dacitic domes are important at, e.g., Yanacocha, Lagunas Norte and La Coipa. Mineralization is typically located near the backscarps of pediments or heads of valleys incising into the high-elevation, low relief surfaces. In the California-Vetas district and El Indio belt, hydrothermal alunite ages become generally younger upstream along the incising valleys, indicating that the focus of mineralization migrated upstream over time. The lowering of the water table and reduction of hydrostatic and lithostatic pressure at locations where erosion rates are highest are believed to facilitate boiling and mixing of magmatic with meteoric fluids, ultimately enhancing hydrothermal activity and ore deposition. The host rock composition, permeability and location of the water table control the distribution of alteration zones and ore. The surface near steam-heated zone can attain a thickness of several hundred meters in dry climates but is typically less than 20-50 m thick in humid climatic zones. Felsic to intermediate volcanic rocks are the most common ore-hosts but high-sulfidation epithermal mineralization can be hosted in

  19. Vertical distributions of uranium, thorium and potassium and of volumetric heat production rates in the sediments of the São Francisco Basin, Central Brazil.

    PubMed

    Ribeiro, F B; Roque, A

    2001-09-01

    Uranium, thorium and potassium measurements and volumetric heat production rate calculations were made in Bambui Group Neoproterozoic sedimentary rocks from the São Francisco Basin, central Brazil. The measurements were made from drilling cuttings from two deep wells drilled near the cities of Alvorada do Norte, northeast Goiás State, and Montalvânia, north of Minas Gerais State. The obtained results allowed the construction of the vertical profiles depicting the abundances of heat generating elements, of the heat production rate and of U/Th, U/K and Th/K ratios in these sediments. These profiles, which reflect both the lithology and the sediment history. are used to interpret some aspects of the Bambui Group sedimentation sequence.

  20. [Study of death with secondary diagnosis of malnutrition in a third level hospital].

    PubMed

    Fernández Valdivia, Antonia; Lobo Támer, Gabriela; Martínez Cirre, Ma Carmen; Valero Aguilera, Beatriz; Peña Taveras, Manuel del Carmen; Rodríguez Rodríguez, José María; Martínez Tapias, Jesús; Pérez de la Cruz, Antonio Jesús

    2013-01-01

    Introducción: La desnutrición constituye uno de los principales problemas de Salud Pública, según datos de la OMS, es la primera causa de mortalidad, cuando la misma afecta al colectivo de los sujetos hospitalizados, toma entidad propia denominándose “desnutrición hospitalaria”. Objetivos: El objetivo general es cuantificar los diagnósticos principales de alta más frecuentes, que causan exitus, con el diagnóstico secundario de desnutrición. Métodos: Se trata de un estudio transversal y descriptivo, en el que se han incluido todas las altas hospitalarias del año 2011 y primer semestre de 2012, que han sido exitus y que tienen como diagnóstico secundario la desnutrición, siendo el total de 33. Se ha realizado un análisis estadístico descriptivo, efectuándose el test de Mann-Whitney para pruebas no paramétricas (p < 0,05). Resultados: Los diagnósticos principales más frecuentes entre las 33 altas analizadas son la sepsis (12,1%), metástasis hepáticas (9,1%), neumonía (6,1%), insuficiencia respiratoria aguda (6,1%) e insuficiencia renal aguda (6,1%). Conclusiones: Aunque el diagnóstico principal más frecuente es la sepsis, al agrupar los diagnósticos, el GRD más frecuente es de patología respiratoria, por lo que se ha de hacer codificación exhaustiva y de calidad para ajustar el peso relativo de los mismos a la realidad. Es fundamental especificar en la fuente de información clínica utilizada para la codificación, el grado de desnutrición, para obtener mayor especificidad en los datos.

  1. [Bibliometric analysis of Revista Médica del IMSS in the Scopus database for the period between 2005-2013].

    PubMed

    García-Gómez, Francisco; Ramírez-Méndez, Fernando

    2015-01-01

    Objetivo: analizar la visibilidad de la Revista Médica del Instituto Mexicano del Seguro Social (Rev Med Inst Mex Seguro Soc) en la base de datos Scopus y describir los principales indicadores bibliométricos cuantitativos de la producción científica publicados durante el periodo 2005-2013. Métodos: para el análisis se utilizó la base de datos Scopus y se limitó el periodo de búsqueda a los años 2005-2013. La estrategia de búsqueda se ejecutó en los campos específicos de Título de la Publicación (Source Title) con el término Revista Médica del Instituto Mexicano del Seguro Social y sus posibles variantes, asícomo el número ISSN de la revista. Para el análisis de los datos obtenidos se utilizaron las herramientas de Scopus y los programas Excel y Access. Resultados: se encontraron 864 trabajos publicados durante el periodo 2005-2013 que fueron incluidos en Scopus. Se identificaron los autores con mayor producción científica y mayor número de citas acumuladas a sus trabajos, asícomo las principales revistas que citan a la Rev Med Inst Mex Seguro Soc. Se describen las principales áreas temáticas, tipos de documentos y otros indicadores bibliométricos que caracterizan a la publicación. Conclusiones: el uso de Scopus brinda la posibilidad de analizar con una herramienta externa al IMSS la visibilidad de la producción científica publicada en la Revista Médica del IMSS, además de que contribuye a identificar el estado de la ciencia en México y de los países en vías desarrollo.

  2. Highly divergent subtypes and new recombinant forms prevail in the HIV/AIDS epidemic in Angola: new insights into the origins of the AIDS pandemic.

    PubMed

    Bártolo, Inês; Rocha, Cheila; Bartolomeu, José; Gama, António; Marcelino, Rute; Fonseca, Marlene; Mendes, Ana; Epalanga, Marta; Silva, Patrícia Cavaco; Taveira, Nuno

    2009-07-01

    Angola, located in South-Western Africa, has a remarkably low HIV/AIDS prevalence in the adult population (3.7%). It is bordered in the North by the Democratic Republic of Congo (DRC) and Republic of Congo that are at the origin of human HIV-1 infections. It is, therefore, likely that HIV-1 strains circulating in Angola are genetically diverse and representative of the origin of the HIV/AIDS epidemic. The aim of this work was to investigate in detail the genetic diversity and molecular epidemiology of HIV-1 in Angola. Almost 400 sequences were obtained from the gag (p17), pol (PR and RT) and/or env (C2C3) genes of 159 HIV-1 infected patients living in eight provinces of Angola (Benguela, Cabinda, Cuanza Norte, Luanda, Lunda Norte, Malange, Uíge, and Zaire) and their genotype was determined by phylogenetic analyses. Gene regions representing all HIV-1 group M clades were found as well as unclassifiable sequences. In env and pol (RT), two groups of sequences forming distinct sub-clusters within the subtype A radiation were found and may define new A5 and A6 sub-subtypes. Recombinant forms were found in almost half (47.1%) of the patients of which 36.0% were second-generation recombinants. Fifty-eight different patterns of recombination were found. The A subtype, including CRF02_AG, was represented in most recombinant viruses. Epidemiological data suggests that the AIDS epidemic in Angola has probably started as early as 1961, the major cause being the independence war, and spread to Portugal soon thereafter. The extraordinary degree of HIV-1 group M genetic diversity and evolution in Angola may pose unprecedented challenges to diagnostic, treatment and prevention of HIV-1 infection.

  3. Month of birth, HLA-DRB1*15 locus and risk of multiple sclerosis in offspring.

    PubMed

    Guijarro-Castro, C; Sanchez-Zapardiel, E; Munoz, D; Fernandez, O; Leyva, L; Castro-Panete, M J; Picon-Munoz, C; Talise, M; Martinez-Feito, A; Paz-Artal, E

    2016-09-01

    Introduccion. El haplotipo HLA-DRB1*1501 es el marcador genetico que se ha asociado con un riesgo tres veces mayor de padecer esclerosis multiple (EM) en caucasicos occidentales. Recientemente se ha sabido que hay una asociacion entre el mes de nacimiento en abril, el genotipo HLA-DRB1 y el riesgo de EM en paises del norte de Europa y Canada. Esto apoya la teoria de que debe haber una interaccion entre un factor de riesgo estacional con un locus cercano al HLA-DRB1*15 durante la gestacion o cerca del posparto. Sujetos y metodos. Se realizo el genotipado de la presencia y subtipo de HLA-DRB1*1501 en 326 pacientes de dos centros espa˜oles y en 226 controles sin patologia neurologica. Se compararon los meses de nacimiento de la muestra de pacientes con los nacimientos mensuales locales en los mismos periodos. Resultados. Comparados los pacientes con EM que eran portadores del alelo HLA-DRB1*15 (10,3%) frente a los pacientes no portadores (3,8%), significativamente mas pacientes nacian en diciembre (p = 0,0185). Tambien se confirmaba el mismo mes de nacimiento de diciembre entre sanos portadores frente a no portadores de HLA-DRB1*15 y entre pacientes portadores de HLA-DRB1*15 frente a sanos. Conclusiones. El mes de nacimiento, el genotipo HLA-DRB1*15 y el riesgo de presentar EM estan asociados. A diferencia de los resultados obtenidos en paises del norte de Europa, donde esta asociacion se ha encontrado en el mes de abril, en Espa˜a es en diciembre. Se demuestra la interaccion de un factor de riesgo estacional en invierno en el locus HLA-DRB1*15 o cercano a este durante la gestacion o tras el nacimiento.

  4. Pentastomid infection in Philodryas nattereri Steindachner, 1870 and Oxybelis aeneus (Wagler, 1824) (Squamata: Colubridae) in a caatinga of northeastern Brazil.

    PubMed

    Almeida, W O; Guedes, T B; Freire, E M X; Vasconcellos, A

    2008-02-01

    The relationship between pentastomids and two Colubridae species, Phillodryas nattereri Steindachner, 1870 and Oxybelis aeneus (Wagler, 1824), were investigated in the federal government's reserve Estação Ecológica do Seridó (ESEC, Seridó) situated at lat 6 degrees 35'-40' S and long 37 degrees 15'-20 W in the municipality of Serra Negra do Norte, state of Rio Grande do Norte, Northeast Brazil and run by IBAMA (the Brazilian Institute for the Environment and Natural Resources). Throughout 2005, 26 specimens of snakes, 13 of P. nattereri and 13 of O. aeneus were collected. After anatomical dissection and laboratorial examination of the snakes respiratory tracts, P. nattereri was found to be parasitized by two species of pentastomids: Cephalobaena tetrapoda Heymons, 1922 with a prevalence of 30.8% and a mean intensity of infection of 51.5 +/- 32.7 (range 3-147), and Raillietiella furcocerca (Diesing, 1863) which had a prevalence of 7.7% and a mean intensity of infection of 1.0. Only one female of O. aeneus was found to be infected by C. tetrapoda, with a prevalence of 7.7% and mean intensity of infection of 2.0. There was no significant relationship between size of snout-vent length (SVL) and intensity of infection in the specimens investigated here. The two individuals of P. nattereri infected by more than 40 specimens of pentastomids had their lungs completely infected including the pulmonary peritoneum and trachea. It is noteworthy that the hosts had their lung tissues partially destroyed with apparent haemorrhage, and the trabecular structure of their lungs was also destroyed. The contrasting rates of infection estimated here may be related to differences in foraging strategies, in diet, and habitat selection carried out by individuals of P. nattereri and O. aeneus.

  5. Learning and memory impairments in a neuroendocrine mouse model of anxiety/depression.

    PubMed

    Darcet, Flavie; Mendez-David, Indira; Tritschler, Laurent; Gardier, Alain M; Guilloux, Jean-Philippe; David, Denis J

    2014-01-01

    Cognitive disturbances are often reported as serious incapacitating symptoms by patients suffering from major depressive disorders (MDDs). Such deficits have been observed in various animal models based on environmental stress. Here, we performed a complete characterization of cognitive functions in a neuroendocrine mouse model of depression based on a chronic (4 weeks) corticosterone administration (CORT). Cognitive performances were assessed using behavioral tests measuring episodic (novel object recognition test, NORT), associative (one-trial contextual fear conditioning, CFC), and visuo-spatial (Morris water maze, MWM; Barnes maze, BM) learning/memory. Altered emotional phenotype after chronic corticosterone treatment was confirmed in mice using tests predictive of anxiety or depression-related behaviors. In the NORT, CORT-treated mice showed a decrease in time exploring the novel object during the test session and a lower discrimination index compared to control mice, characteristic of recognition memory impairment. Associative memory was also impaired, as observed with a decrease in freezing duration in CORT-treated mice in the CFC, thus pointing out the cognitive alterations in this model. In the MWM and in the BM, spatial learning performance but also short-term spatial memory were altered in CORT-treated mice. In the MWM, unlike control animals, CORT-treated animals failed to learn a new location during the reversal phase, suggesting a loss of cognitive flexibility. Finally, in the BM, the lack of preference for the target quadrant during the recall probe trial in animals receiving corticosterone regimen demonstrates that long-term retention was also affected in this paradigm. Taken together, our results highlight that CORT-induced anxio-depressive-like phenotype is associated with a cognitive deficit affecting all aspects of memory tested.

  6. Self-perception of oral health in older adults from an urban population in Lisbon, Portugal

    PubMed Central

    Carvalho, Catarina; Manso, Ana Cristina; Escoval, Ana; Salvado, Francisco; Nunes, Carla

    2016-01-01

    ABSTRACT OBJECTIVE To analyze if the self-perception of oral health in the urban context is associated with sociodemographic factors that interfere in the life quality of oral health. METHODS Cross-sectional study with convenience sample of older individuals (65 years old or more) enrolled in the Agrupamento de Centros de Saúde de Lisboa Norte (ACES Lisboa Norte – Health Centers Groupings North Lisbon). The self-perception of oral health and associated life quality was evaluated by the Geriatric Oral Health Assessment Index and the individuals were classified according to sociodemographic characteristics. The internal consistency of the questionnaire was evaluated by Cronbach’s alpha (α). Later, we used binary logistic regression models to characterize the factors associated with the self-perception of oral health, considering the sociodemographic variables and the older adults’ clinical conditions of oral health and establishing the crude and adjusted (to age) odds ratios and their 90% confidence intervals. RESULTS A total of 369 older adults participated in this study, with an average age of 74.2 years (SD = 6.75); 62.9% were female. On average, the index was moderated, with tendency to be high: 32.9 (SD = 3.6; 12-36 interval). The Cronbach’s alpha was high: 0.805. Age, marital status, and the last dental appointment were the factors significantly associated with self-perception of oral health. CONCLUSIONS The study shows that these individuals have a moderate, with tendency to high, self-perception of oral health. The self-perception of oral health assessment allowed us to identify the main associated sociodemographic factors. This instrument can help guiding planning strategies and oral health promotion directed toward a better life quality for this population group. PMID:27556967

  7. Blonanserin Ameliorates Phencyclidine-Induced Visual-Recognition Memory Deficits: the Complex Mechanism of Blonanserin Action Involving D3-5-HT2A and D1-NMDA Receptors in the mPFC

    PubMed Central

    Hida, Hirotake; Mouri, Akihiro; Mori, Kentaro; Matsumoto, Yurie; Seki, Takeshi; Taniguchi, Masayuki; Yamada, Kiyofumi; Iwamoto, Kunihiro; Ozaki, Norio; Nabeshima, Toshitaka; Noda, Yukihiro

    2015-01-01

    Blonanserin differs from currently used serotonin 5-HT2A/dopamine-D2 receptor antagonists in that it exhibits higher affinity for dopamine-D2/3 receptors than for serotonin 5-HT2A receptors. We investigated the involvement of dopamine-D3 receptors in the effects of blonanserin on cognitive impairment in an animal model of schizophrenia. We also sought to elucidate the molecular mechanism underlying this involvement. Blonanserin, as well as olanzapine, significantly ameliorated phencyclidine (PCP)-induced impairment of visual-recognition memory, as demonstrated by the novel-object recognition test (NORT) and increased extracellular dopamine levels in the medial prefrontal cortex (mPFC). With blonanserin, both of these effects were antagonized by DOI (a serotonin 5-HT2A receptor agonist) and 7-OH-DPAT (a dopamine-D3 receptor agonist), whereas the effects of olanzapine were antagonized by DOI but not by 7-OH-DPAT. The ameliorating effect was also antagonized by SCH23390 (a dopamine-D1 receptor antagonist) and H-89 (a protein kinase A (PKA) inhibitor). Blonanserin significantly remediated the decrease in phosphorylation levels of PKA at Thr197 and of NR1 (an essential subunit of N-methyl-D-aspartate (NMDA) receptors) at Ser897 by PKA in the mPFC after a NORT training session in the PCP-administered mice. There were no differences in the levels of NR1 phosphorylated at Ser896 by PKC in any group. These results suggest that the ameliorating effect of blonanserin on PCP-induced cognitive impairment is associated with indirect functional stimulation of the dopamine-D1-PKA-NMDA receptor pathway following augmentation of dopaminergic neurotransmission due to inhibition of both dopamine-D3 and serotonin 5-HT2A receptors in the mPFC. PMID:25120077

  8. Is polychaete family-level sufficient to assess impact on tropical estuarine gradients?

    NASA Astrophysics Data System (ADS)

    Nóbrega-Silva, Climélia; Patrício, Joana; Marques, João Carlos; Olímpio, Monalisa dos Santos; Farias, Jéssica Natyelle Barros; Molozzi, Joseline

    2016-11-01

    Regular, robust monitoring programs set up to assess the environmental conditions of aquatic systems often target different biological groups. And, of these, macroinvertebrate communities and particularly the class Polychaeta are frequently used. Identifying these organisms takes time, money and specialized expertise to ensure correct identification to the lowest possible taxonomic level. Identification errors can lead to an erroneous assessment. The concept of taxonomic sufficiency has been proposed both to minimize errors and to save time and money. This study tested the usefulness of this concept in tropical estuaries in northeast Brazil. We selected two transitional systems with different degrees of human impact due to different land uses and different conservation systems: the Mamanguape estuary, which is in an environmental conservation unit for sustainable use, and the highly impacted, urban Paraíba do Norte estuary. The results clearly showed that nutrient concentrations were markedly higher in the Paraíba do Norte estuary in the dry season and that the composition of the polychaete assemblages differed between the two estuaries as well as along the spatial gradient of each estuary. The use of either genus or family level led to equivalent representation in each system in terms of taxon richness and both the Margalef and Shannon-Wiener diversity indices. Both taxonomic levels described similar changes in the polychaete assemblage along the estuarine gradients. Based on our findings, the use of a coarser taxonomic level (i.e., family) is a good option when the aim is to implement a monitoring program in tropical estuaries with the polychaete assemblages as one of the target groups. This time-efficient taxonomic resolution can help improve sampling designs and allow long-term monitoring studies without losing much vital information.

  9. MMP-9 gene ablation mitigates hyperhomocystenemia-induced cognition and hearing dysfunction.

    PubMed

    Bhargava, Seema; Pushpakumar, Sathnur; Metreveli, Naira; Givvimani, Srikanth; Tyagi, Suresh C

    2014-08-01

    Hyperhomocysteinemia (HHcy) is associated with cognitive decline and hearing loss due to vascular dysfunction. Although we have shown that HHcy-induced increased expression of matrix metalloproteinase-9 (MMP-9) is associated with cochlear pathology in cystathionine-β-synthase heterozygous (CBS(+/-)) mice, it is still unclear whether MMP-9 contributes to functional deficit in cognition and hearing. Therefore, we hypothesize that HHcy-induced MMP-9 activation causes vascular, cerebral and cochlear remodeling resulting in diminished cognition and hearing. Wildtype (WT), CBS(+/-), MMP-9(-/-) and CBS(+/-)/MMP-9(-/-) double knock-out (DKO) mice were genotyped and used. Doppler flowmetry of internal carotid artery (ICA) was performed for peak systolic velocity [PSV], pulsatility index [PI] and resistive index [RI]. Cognitive functions were assessed by Novel Object Recognition Test (NORT) and for cochlear function Auditory brainstem response (ABR) was elicited. Peak systolic velocity, pulsatility and resistive indices of ICA were decreased in CBS(+/-) mice, indicating reduced perfusion. ABR threshold was increased and maximum ABR amplitude and NORT indices (recognition, discrimination) were decreased in CBS(+/-) mice compared to WT and MMP-9(-/-). All these parameters were attenuated in DKO mice suggesting a significant role of MMP-9 in HHcy-induced vascular, neural and cochlear pathophysiology. Regression analysis of PSV with ABR and cognitive parameters revealed significant correlation (0.44-0.58). For the first time, MMP-9 has been correlated directly to functional deficits of brain and cochlea, and found to have a significant role. Our data suggests a dual pathology of HHcy occurring due to a decrease in blood supply (vasculo-neural and vasculo-cochlear) and direct tissue remodeling.

  10. Le syndrome de Budd-Chiari: une complication rare de la sarcoïdose hépatique (à propos d'un cas)

    PubMed Central

    Sghier, Ismael Ait; Billah, Nabil Moatassim

    2016-01-01

    L'atteinte hépatique au cours de la sarcoïdose est une localisation fréquente, habituellement asymptomatique. La cholestase anictérique et l'hypertension portale représentent ses principales complications. Le syndrome de Budd-Chiari est une complication peu connue qui demeure exceptionnelle. Nous rapportons un nouveau cas de syndrome de Budd-Chiari compliquant une sarcoïdose hépatique chez une jeune femme de 45 ans. PMID:27200114

  11. Formación y evolución de planetas gigantes

    NASA Astrophysics Data System (ADS)

    Benvenuto, O. G.; Brunini, A.

    Presentamos el estado actual del trabajo que estamos realizando en el estudio de la formación de planetas gigantes. Detallamos los algoritmos numéricos necesarios para realizar este tipo de cálculo. Presentamos algunos resultados de la formación de objetos con masas de hasta una docena de veces la del planeta Júpiter, resaltando las principales caracteríticas. Finalmente detallamos los problemas que pensamos abordar en un futuro cercano en este tema de investigación.

  12. Velocidades radiales de estrellas gigantes rojas y blue stragglers en cúmulos abiertos

    NASA Astrophysics Data System (ADS)

    González, J. F.; Lapasset, E.

    Se presentan mediciones de las estrellas más brillantes en los campos de los cúmulos abiertos NGC 6530, NGC 2516, NGC 3114, Cr 223 y NGC 2437. Mediante correlaciones cruzadas se obtiene la velocidad de unas 25 gigantes rojas con el objeto de derivar la velocidad media de cada asociación. En base a los espectros obtenidos de los blue stragglers se discuten sus principales características y su probabilidad de pertenencia. Finalmente, se presentan las observaciones para cinco nuevas binarias espectroscópicas detectadas.

  13. Educación no formal

    NASA Astrophysics Data System (ADS)

    Tignanelli, H.

    Se comentan en esta comunicación, las principales contribuciones realizadas en el campo de la educación en astronomía en los niveles primario, secundario y terciario, como punto de partida para la discusión de la actual inserción de los contenidos astronómicos en los nuevos contenidos curriculares de la EGB - Educación General Básica- y Polimodal, de la Reforma Educativa. En particular, se discuten los alcances de la educación formal y no formal, su importancia para la capacitación de profesores y maestros, y perspectivas a futuro.

  14. Transcendental Meditation

    SciTech Connect

    2005-11-29

    K.Wallace, qui vient des Etats Unis, parle des effects physiologiques de la méditation transcendantale. Il a fait son bachelor en physique à l'Université de Los Angeles et son doctorat en physiologie aussi à Los Angeles, mais à l'Institut de Recherche sur le cerveau. Il travaille maintenat à Harvard Medical School ou il continue des recherches biochimiques et physiologiques sur l'application médicale de la méditation transcendantale. Il s'occupe principalement des maladies cardiaques et de hypertension artérielle.

  15. [Sentinel lymph node detection in breast cancer. Experience of the Institut Curie].

    PubMed

    Nos, C; Fréneaux, P; Clough, K B

    2000-05-01

    Sentinel lymph node biopsy is a recently developed, minimally invasive technique for staging the axilla in breast cancer. This new procedure of selective lymphadenectomy has been the subject of several studies, and a consensus of opinion is starting to form to define indications and methods of identification concerning the use of this technique. At the Institut Curie since 1996, we have been using the Patenté blue dye technique and from 1998 we have used the combination of blue dye and technetium labeled sulfur colloid. This article summarizes the principales aspect of this technique. PMID:10804363

  16. Transcendental Meditation

    ScienceCinema

    None

    2016-07-12

    K.Wallace, qui vient des Etats Unis, parle des effects physiologiques de la méditation transcendantale. Il a fait son bachelor en physique à l'Université de Los Angeles et son doctorat en physiologie aussi à Los Angeles, mais à l'Institut de Recherche sur le cerveau. Il travaille maintenat à Harvard Medical School ou il continue des recherches biochimiques et physiologiques sur l'application médicale de la méditation transcendantale. Il s'occupe principalement des maladies cardiaques et de hypertension artérielle.

  17. Les rivières et les sources de la Plaine du Cul-de-Sac: extrait du rapport sur les eaux souterraines de la Plaine du Cul-de-Sac

    USGS Publications Warehouse

    Taylor, George C.; Lemoine, Rémy C.

    1949-01-01

    Les principales rivières de la Plaine du Cul-de-Sac, la Rivière Grise ou Grande Rivière du Cul-de-Sac et la Rivière Blanche, prennent naissance sur le flanc Nord du Massif de la Selle à des altitudes de 1,300 à 1,800 mètres au dessus du niveau de la mer. Elles coulent à l’amont à travers des gorges profondes et sont éloignées de 9 Kms. dans la partie central de la bordure Sud de la plaine.

  18. [Sentinel lymph node detection in breast cancer. Experience of the Institut Curie].

    PubMed

    Nos, C; Fréneaux, P; Clough, K B

    2000-05-01

    Sentinel lymph node biopsy is a recently developed, minimally invasive technique for staging the axilla in breast cancer. This new procedure of selective lymphadenectomy has been the subject of several studies, and a consensus of opinion is starting to form to define indications and methods of identification concerning the use of this technique. At the Institut Curie since 1996, we have been using the Patenté blue dye technique and from 1998 we have used the combination of blue dye and technetium labeled sulfur colloid. This article summarizes the principales aspect of this technique.

  19. La Función de Luminosidad de las poblaciones de cúmulos globulares alrededor de NGC 1399

    NASA Astrophysics Data System (ADS)

    Ostrov, P. G.; Forte, J. C.; Geisler, D.

    Mediante el empleo de una técnica especial para filtrar el pattern de fringing, se ha obtenido una función de luminosidad de los cúmulos globulares de NGC 1399 superando por ~ 1 mag el turn-over en la banda T1 del sistema de Washington. El análisis de los resultados de la fotometría multibanda (C, M, T1) permite determinar que las mitades mas brillantes de las funciones de luminosidad de las dos principales poblaciones de cúmulos globulares asociadas con esta galaxia son similares.

  20. La para-osteo-arthropathie neurogene dans le syndrome de guillain barre: complication rare (à propos d'un cas et revue de la littérature)

    PubMed Central

    Abid, Hatim; El Idrissi, Mohamed; Shimi, Mohamed; El Ibrahimi, Abdelhalim; El Mrini, Abdelmajid

    2015-01-01

    Les para-ostéo-arthropathies neurogènes sont des complications classiques des affections neurologiques centrales, surtout dans les contextes traumatiques. Elles surviennent principalement au voisinage des grosses articulations. Leur physiopathologie exacte reste inconnue malgré de très nombreux travaux et cas rapportés. Il semble que leur survenue au décours d'affections neurologiques périphériques soit exceptionnelle. Nous présentons le cas d'une para-ostéo-arthropathie de hanche bilatérale compliquant un syndrome de Guillain-Barré. PMID:26161168

  1. L'Aventure du LHC

    SciTech Connect

    2010-06-11

    Cette présentation s’adressera principalement aux personnes qui ont construit le LHC. La construction du LHC fut longue et difficile. De nombreux problèmes sont apparus en cours de route. Tous ont été résolus grâce au dévouement et à l’engagement du personnel et des collaborateurs. Je reviendrai sur les coups durs et les réussites qui ont marqués ces 15 dernières années et je vous montrerai combien cette machine, le fruit de vos efforts, est extraordinaire.

  2. INTERVENCIÓN EDUCATIVA EFECTIVA EN VIH PARA MUJERES

    PubMed Central

    Miner, Sarah; Poupin, Lauren; Bernales, Margarita; Ferrer, Lilian; Cianelli, Rosina

    2016-01-01

    RESUMEN En Chile se estima que aproximadamente 38 mil personas viven con el Virus de Inmunodeficiencia Humana [VIH]. En el año 2001, 1.092 mujeres chilenas vivían con VIH, actualmente se cree que hay más de 7.600 mujeres con el virus. Frente a estas cifras surge la necesidad de crear estrategias de prevención dirigidas a mujeres chilenas. Objetivo analizar los estudios ya realizados en la prevención de VIH para determinar qué aspectos se deben incluir en programas exitosos de prevención de VIH en mujeres. Diseño y Método se realizó una revisión de la literatura utilizando la base de datos Proquest, CINAHL, Pubmed y Scielo. Los límites comprendieron: textos completos, de los últimos 10 años, de acceso gratuito y escrito en español o inglés. Se seleccionaron 15 artículos para la revisión. Resultados todos los artículos comprenden la evaluación del efecto de una intervención sobre conocimiento y conductas relacionadas con VIH/SIDA. Catorce muestran resultados significativos en cambios positivos de conducta o conocimientos relacionados con la prevención de VIH. Conclusiones los programas de prevención de VIH en mujeres pueden ser efectivos para lograr cambios de conducta y de conocimiento. Las intervenciones exitosas son aquellas basadas en teorías o modelos de prevención y en cambios de conductas, todas adaptadas a la cultura de la población estudiada.

  3. Efficacy of social support on metabolic syndrome among low income rural women in Chiapas, México.

    PubMed

    Bezares-Sarmiento, Vidalma del Rosario; Bacardí-Gascón, Montserrat; Márquez-Rosa, Sara; Molinero-González, Olga; Estrada-Grimaldo, Martha; Jiménez-Cruz, Arturo

    2013-01-01

    Introducción: El propósito de este estudio fue valorar una intervención de soporte social entre mujeres rurales de Chiapas, sobre los cambios en el estilo de vida, el autoconcepto, y el síndrome metabólico (MS). Métodos: Se realizó una muestra de conveniencia entre todas la mayores de 16 años de una población rural marginada del centro de Chiapas. Se utilizaron dos cuestionarios. Uno sobre el auto-concepto de salud y el otro sobre el perfil de estilos saludables. Los componentes del MS se valoraron de acuerdo a los criterios de la Federación Internacional de Diabetes. La intervención se realizó durante un período de tres meses y se dividió en 13 sesiones que incluían soporte social (SS) y educación nutricional (EN). Resultados: Cumplieron con los criterios de inclusión, 586 mujeres. Al inicio del estudio 47% tenían MS; obesidad abdominal, 69%; altos niveles de glucosa, 27%; de triglicéridos, 56%; de presión arterial sistólica, 17%; de presión arterial diastólica, 15%; y bajos niveles de colesterol- HDL, 55%. Después de la intervención 38% presentaron MS y se observó una reducción de todos los componentes del MS. Al final del estudio se observaron cambios significativos en AF5, PETS-1 y algunos componentes del SM. Conclusiones: Después de una intervención de SS y EN, se observaron cambios significativos en varias dimensiones del AF5 y del PETS-1, así como en SM y todos los componentes del SM.

  4. INTERVENCIÓN EDUCATIVA EFECTIVA EN VIH PARA MUJERES

    PubMed Central

    Miner, Sarah; Poupin, Lauren; Bernales, Margarita; Ferrer, Lilian; Cianelli, Rosina

    2016-01-01

    RESUMEN En Chile se estima que aproximadamente 38 mil personas viven con el Virus de Inmunodeficiencia Humana [VIH]. En el año 2001, 1.092 mujeres chilenas vivían con VIH, actualmente se cree que hay más de 7.600 mujeres con el virus. Frente a estas cifras surge la necesidad de crear estrategias de prevención dirigidas a mujeres chilenas. Objetivo analizar los estudios ya realizados en la prevención de VIH para determinar qué aspectos se deben incluir en programas exitosos de prevención de VIH en mujeres. Diseño y Método se realizó una revisión de la literatura utilizando la base de datos Proquest, CINAHL, Pubmed y Scielo. Los límites comprendieron: textos completos, de los últimos 10 años, de acceso gratuito y escrito en español o inglés. Se seleccionaron 15 artículos para la revisión. Resultados todos los artículos comprenden la evaluación del efecto de una intervención sobre conocimiento y conductas relacionadas con VIH/SIDA. Catorce muestran resultados significativos en cambios positivos de conducta o conocimientos relacionados con la prevención de VIH. Conclusiones los programas de prevención de VIH en mujeres pueden ser efectivos para lograr cambios de conducta y de conocimiento. Las intervenciones exitosas son aquellas basadas en teorías o modelos de prevención y en cambios de conductas, todas adaptadas a la cultura de la población estudiada. PMID:27667897

  5. [Hematological changes induced by erythrocytapheresis].

    PubMed

    Domínguez-Morales, Sindy Karina Ibeth; Moreno-López, Luis Carlos; Gallardo, Juan Manuel; Paniagua, José Ramón

    2015-01-01

    Introducción: El efecto del procedimiento en los índices hematológicos del donador rara vez se determina al finalizar una sesión de donación. El propósito de este estudio es identificar las posibles alteraciones hematológicas en los donadores sometidos a eritroféresis. Métodos: Se evaluaron 30 donadores adultos, aparentemente sanos. El procedimiento de eritroféresis se realizó utilizando un equipo automatizado. Las mediciones hematológicas (hemoglobina, hematocrito, células blancas y plaquetas) se realizaron antes y después de la eritroféresis. Resultados: Existe disminución significativa en hemoglobina (p < 0.0001), hematocrito (p < 0.0001), leucocitos totales (p < 0.0001), linfocitos (p = 0.0267), y plaquetas (p < 0.0001) tras el procedimiento de donación. Por otro lado, los segmentados tienen un ligero aumento. No se encontraron cambios en monocitos, eosinófilos ni en basófilos poseritroféresis. Conclusiones: durante el procedimiento de donación sanguínea mediante eritroféresis se producen cambios hematológicos tanto en la formula roja como blanca en los donadores estudiados, a pesar de ello, ninguno de los donadores manifestaron signos de trombocitopenia o anemia. Este trabajo demuestra que existen cambios hematológicos postdonación y por ello se requiere de estudios amplios y multicéntricos, con el fin de establecer directrices para establecer un procedimiento seguro para el donador y mejorar la evaluación de idoneidad de los donadores.

  6. [Eating habits and attitudes towards change in Spanish university students and workers].

    PubMed

    Zazpe, Itziar; Marqués, María; Sánchez-Tainta, Ana; Rodríguez-Mourille, Ana; Beunza, Juan-José; Santiago, Susana; Fernández-Montero, Alejandro

    2013-01-01

    Introducción: El entorno educativo y laboral ha adquirido protagonismo como ámbito prometedor para llevar a cabo intervenciones nutricionales en población adulta. Objetivos: El objetivo de este trabajo es evaluar los hábitos alimentarios y actitudes hacia el cambio en trabajadores y alumnos universitarios con distinto perfil académico. Métodos: Estudio epidemiológico descriptivo de tipo transversal en población universitaria española de 1.429 sujetos. Se analizaron los hábitos alimentarios y las actitudes hacia el cambio de hábitos. Resultados: La edad media de los trabajadores fue de 37 años y en los estudiantes de 23 años. En ambos grupos el fraccionamiento de la ingesta más frecuente fue de cuatro tomas al día. En los alumnos se observó menor frecuencia de consumo de verdura, vino, pescado y frutos secos y mayor de bebidas carbonatadas, repostería comercial, fast-food y carnes rojas. Por otro lado, en general los hábitos alimentarios de los estudiantes de ciencias fueron más saludables que los de letras. Aunque no se observaron diferencias significativas en las actitudes hacia el cambio entre estudiantes y trabajadores, el 32% de los empleados y el 39% de los estudiantes afirmaron estar planteándose seriamente cambiar sus costumbres. Conclusiones: El patrón alimentario fue más saludable entre los trabajadores que entre los alumnos, especialmente en aquellos que cursan grados de letras, que constituyen el grupo más vulnerable desde el punto de vista nutricional. Además, aproximadamente un tercio de los trabajadores y alumnos se planteaba modificar sus hábitos.

  7. [Onychomycosis frequency in psoriatic patients in a tertiary care hospital].

    PubMed

    Méndez-Tovar, Luis Javier; Arévalo-López, Alfredo; Domínguez-Aguilar, Sofía; Manzano-Gayosso, Patricia; Hernández-Hernández, Francisca; López Martínez, Rubén; Silva González, Israel

    2015-01-01

    Introducción: los cambios ungueales en los pacientes con psoriasis pueden ser muy parecidos a la onicomicosis y, por lo tanto, las infecciones fúngicas pueden ser subdiagnosticadas. Se investigó la frecuencia de onicomicosis en manos y pies de 150 pacientes con psoriasis de un servicio de dermatología. Métodos: se obtuvieron los datos clínicos de la psoriasis. Se cultivaron escamas de las uñas en agar dextrosa Sabouraud con y sin antibióticos y se hizo un examen directo con KOH. Resultados: de los 150 pacientes, 67 (45 %) presentaron uñas sanas; 42 (28 %) tuvieron onicomicosis, y 41 (27 %) onicopatía sin infección. Las alteraciones ungueales en las manos estuvieron más asociadas con onicopatía psoriásica (82.5 %); los cambios de las uñas de los pies se asociaron más frecuentemente a infección fúngica (26.4 frente a 9.45 % en psoriasis). De 20 cultivos positivos, se aislaron 22 agentes: 11 Candida spp. (50 %). Como factor de riesgo para desarrollar onicomicosis, el tiempo de evolución de la psoriasis mostró una diferencia significativa (p = 0.03). Conclusión: en los pacientes con psoriasis, las alteraciones ungueales de manos se deben principalmente a psoriasis, mientras que los cambios ungueales en los pies se asocian a onicomicosis. Esta fue causada principalmente por Candida sp. El único factor de riesgo asociado para onicomicosis fue la larga evolución de la psoriasis.

  8. [Validity of an instrument for assessing food consumption, food habits and cooking skills in 8-11 years old students].

    PubMed

    Lera, Lydia; Fretes, Gabriela; González, Carmen Gloria; Salinas, Judith; Vio del Rio, Fernando

    2015-05-01

    Introducción: Para medir cambios en prácticas alimentarias, se requieren instrumentos que midan conocimiento, consumo, habilidades culinarias, hábitos y gastos en alimentos en las escuelas. Objetivo: Validar un instrumento que permita medir cambios en conocimiento, consumo, habilidades culinarias, hábitos y gastos en niños de 8 a 11 años, de tercero a quinto básico, en escuelas públicas de Chile. Métodos: Se realizó un estudio de validación de un cuestionario de 42 preguntas de conocimiento, consumo, habilidades culinarias, hábitos y gastos en la escuela. Se realizó en dos etapas: la primera en 45 niños para evaluar la estabilidad temporal, concordancia y consistencia interna. La segunda fue aplicar el instrumento modificado con los resultados de la primera etapa en 90 niños para medir consistencia interna. Resultados: El cuestionario aplicado en los 45 niños mostró estabilidad temporal, concordancia y consistencia interna aceptables para habilidades culinarias, hábitos y gastos en la escuela. La consistencia fue buena para frecuencia de consumo, pero mala en conocimiento. En la validación final con 90 niños, se confirmó la buena consistencia para frecuencia de consumo y mala para conocimiento. Se observó que aquellos niños con habilidades culinarias, consumen más alimentos saludables y los que gastan más dinero en la escuela, consumen menos alimentos saludables. Conclusiones: Al instrumento se le quitaron las preguntas de conocimiento, quedando con 28 preguntas de consumo, habilidades culinarias, hábitos y gasto en alimentos en las escuelas. Este instrumento es útil para medir cambios en intervenciones educativas en alimentación y nutrición en niños de 8 a 11 años.

  9. Effect of calorie restriction on energy expenditure in overweight and obese adult women.

    PubMed

    Jiménez Jaime, Teresa; Leiva Balich, Laura; Barrera Acevedo, Gladys; de la Maza Cave, María Pía; Hirsch Birn, Sandra; Henríquez Parada, Sandra; Rodríguez Silva, Juan; Bunout Barnett, Daniel

    2015-06-01

    El gasto energetico (GE) puede disminuir en sujetos sometidos a dietas hipocaloricas, en una magnitud que excede la reduccion explicada por los cambios en la composicion corporal; dificultando la mantencion del peso perdido. Objetivo: verificar si el Gasto Energetico en Reposo (GER) y Total (GET) experimentan una disminucion mayor a lo atribuible a cambios en la composicion corporal y dependen de la adherencia al tratamiento dietario. Metodología: veintidos mujeres (23-44 anos) con Indice de Masa Corporal (IMC) entre 25 y 32 kg/m2 fueron sometidas a tres meses de restriccion calorica (20 kcal/kg de peso inicial) y motivadas a aumentar su actividad fisica. Al inicio y al final se evaluo: peso, masa grasa (MG) y masa libre de grasa (MLG) con DEXA, GER (calorimetria indirecta), Gasto Energetico por Actividad Fisica (GEAF) y GET (actigrafia). Las participantes que perdieron ≥ 5% del peso inicial fueron consideradas como adherentes a la dieta. Resultados: el grupo adherente tuvo una disminucion significativa del GER absoluto [-164 } 168 kcal/dia (10,6%) y -4,3 } 4,6 kcal/kg MLG (10,5%)]. Esta disminucion fue significativamente mayor que la observada en el grupo no adherente [-6,2 } 1.42 kcal/dia (0.16%) y -0,5 } 3,4/kg FFM (0.96%)]. La MLG no cambio en ninguno de los dos grupos. Existio asociacion significativa entre MLG y GER (r = 0,56; p < 0,05) solo al inicio en el grupo total. Conclusiones: las mujeres adherentes a la restriccion calorica mostraron una reduccion en el GER tanto absoluto como ajustado por la MLG, lo cual, junto con la perdida de correlacion entre el GER y la MLG al final de la intervencion, sugieren adaptacion metabolica.

  10. Participatory groundwater management in Jordan: Development and analysis of options

    NASA Astrophysics Data System (ADS)

    Chebaane, Mohamed; El-Naser, Hazim; Fitch, Jim; Hijazi, Amal; Jabbarin, Amer

    pour assister les décideurs, les propriétaires de puits et les autres acteurs pour atteindre progressivement un régime de prélèvement durable. Les aspects sociaux et économiques de chaque option et de chaque scénario ont été analysés et présentés aux acteurs, en même temps qu'un résumé des ramifications légales, institutionnelles et environnementales. En combinant une analyse scientifique à une approche participative du bassin d'Amman Zarqa, la gestion des eaux souterraines a été imaginée comme un prototype pouvant être utilisé pour la gestion d'autres bassins aquifères de Jordanie. Il peut également être utile à d'autres régions du monde qui sont concernées par des problèmes similaires de surexploitation des eaux souterraines. La sobreexplotación de las aguas subterráneas ha ido en aumento en Jordania, donde las demandas en competición han crecido frente a una escasez perenne de agua, situación que ha sido agravada por el estado de sequía de la última década. Este artículo presenta los hallazgos de un proyecto en el que se han desarrollado opciones de gestión para hacer frente a la sobreexplotación en uno de los principales sistemas acuíferos de Jordania: la cuenca de Ammán-Zarga. Se ha elaborado opciones para afrontar la situación mediante un enfoque participativo que incluye a personal del gobierno y a diversos grupos de interés de los sectores público y privado. En particular, se ha intentado involucrar a los regantes que se sirven de aguas subterráneas, quienes tienen más probabilidad de ser directamente afectados por los cambios requeridos para devolver el sistema a un balance equilibrado. A partir de la información obtenida en rápidas campañas de valoración, así como de encuentros con la comunidad y entrevistas con los expertos técnicos del gobierno, se ha identificado un amplio conjunto de opciones para su evaluación. Basándose en un análisis integrado de los aspectos hidrogeológicos, sociales y econ

  11. LIPID PROFILE AND ASSOCIATED FACTORS AMONG ELDERLY PEOPLE, ATTENDED AT THE FAMILY HEALTH STRATEGY, VIÇOSA/MG.

    PubMed

    Danésio de Souza, Jacqueline; Queiroz Ribeiro, Andréia; Oliveira Martinho, Karina; Silva Franco, Fernanda; Vidal Martins, Marcos; Gonçalves Rodrigues, Meirele; Wick, Jeannette Y; Araújo Tinôco, Adelson Luiz

    2015-08-01

    Introducción: el envejecimiento de la población ha ido acompañado de cambios epidemiológicos de la población brasileña, destacando el crecimiento continuo de la prevalencia de enfermedades crónicas no transmisibles, especialmente cardiovasculares o de la arteria coronaria, como resultado de los cambios en el perfil lipídico de las personas mayores. Objetivo: describir las variables antropométricas, estilo de vida y composición corporal como factores de comportamiento y su asociación con los cambios en el perfil lipídico de las personas de edad avanzada. Metodología: la muestra incluyó a 402 participantes que asistieron a la Estrategia Salud de la Familia, Viçosa (MG), a los que se aplicó un cuestionario con información socio-demográfica, de comportamiento y de estilo de vida. Se recogió una muestra de sangre para obtener las fracciones de lípidos, y se midió el porcentaje de peso, talla, circunferencia de la cintura y grasa corporal. La regresión lineal múltiple se realizó para identificar factores independientemente asociados con los cambios en cada una de las fracciones de lípidos seleccionados. Resultado: los factores asociados de forma independiente con un aumento de los niveles de colesterol total fueron la presencia de conducta sedentaria, un porcentaje de grasa corporal alto, mayor altura de la cintura y una mayor circunferencia de la cintura. El consumo de bebidas alcohólicas y una proporción cintura-cadera más alta se mantuvo asociado de forma independiente con la disminución de los niveles de lipoproteínas de alta densidad. El aumento de la circunferencia de la cintura se asoció de forma independiente con valores bajos de los niveles de lipoproteínas de baja densidad. El valor del aumento de triglicéridos se asocia de forma independiente con una mayor relación cintura-cadera, un mayor índice de masa corporal y tabaquismo. Conclusión: los factores de riesgo modificables asociados con un perfil lipídico cambiado deben

  12. Influence of age and religious fasting on the body composition of Muslim women living in a westernized context.

    PubMed

    López-Bueno, Marta; González-Jiménez, Emilio; Navarro-Prado, Silvia; Montero-Alonso, Miguel A; Schmidt-RioValle, Jacqueline

    2014-12-16

    Introducción: Actualmente existe controversia acerca de si la práctica del Ramadán implica, o no, cambios en el estado nutricional y composición corporal en las mujeres que lo practican. Asimismo, estudios recientes sugieren que la edad puede constituir un factor influyente en los valores antropométricos y de composición corporal antes y al final del Ramadán. El objetivo de nuestro estudio fue analizar los efectos del ayuno practicado durante el Ramadán sobre el estado nutricional y la composición corporal en un grupo de mujeres que viven en un contexto occidentalizado, así como el efecto de la variable edad. Material y Métodos: Se llevó a cabo un estudio longitudinal con 62 mujeres, bereberes y musulmanas, de edades comprendidas entre los 18 a 61 en la ciudad norteafricana de Melilla (España). El estado nutricional se evaluó mediante antropometría y el estudio de la composición corporal, a través de bioimpedancia. Estas evaluaciones se realizaron antes del inicio del ayuno y la última semana de Ramadán. Resultados: El ayuno intermitente produce cambios importantes en el estado nutricional y en la composición corporal de las mujeres. Observándose una reducción significativa (p=0.000) en los valores del peso corporal total, índice de masa corporal, porcentaje de grasa corporal medida por bioimpedancia, y circunferencia de la cadera (p=0.008). Se encontraron diferencias significativas (p=0.000) en los valores antropométricos y de composición corporal, antes y al final del Ramadán, en función de la edad. Conclusiones: Se observaron cambios significativos en el estado nutricional y en la composición corporal en todas las mujeres al finalizar el Ramadán. Estos cambios fueron más acusados en el grupo de mujeres mayores de treinta años.

  13. Accelerating Adaptation of Natural Resource Management to Address Climate Change

    PubMed Central

    Cross, Molly S; McCarthy, Patrick D; Garfin, Gregg; Gori, David; Enquist, Carolyn AF

    2013-01-01

    Atender el Cambio Climático Resumen Los manejadores de recursos naturales están buscando herramientas para ayudarles a atender los efectos actuales y futuros del cambio climático. Presentamos un modelo para la planificación colaborativa enfocada a identificar formas para adaptar las acciones de manejo para atender los efectos del cambio climático en paisajes que cruzan límites jurisdiccionales públicos y privados. La Iniciativa Sudoccidental de Cambio Climático (ISCC) puso a prueba el método de planificación de Adaptación para Metas de Conservación (AMC) en talleres en cuatro paisajes del suroeste de E. U. A. Este método de planificación incrementó exitosamente la capacidad de los participantes para atender el cambio climático al proporcionarles un mejor entendimiento de los efectos potenciales y guiar la identificación de soluciones. Los talleres promovieron el diálogo trans-jurisdiccional y multidisciplinario sobre cambio climático mediante la participación activa de científicos y manejadores en la evaluación de efectos del cambio climático, la discusión de implicaciones de esos efectos para determinar las metas y actividades de manejo y desarrollar oportunidades para la coordinación regional de la adaptación de planes de manejo. La aplicación simplificada del marco AMC llevó las discusiones de grupo más allá de la evaluación de los efectos a la concepción de opciones para mitigar los efectos del cambio climático sobres determinadas especies, funciones ecológicas y ecosistemas. Los participantes abordaron la incertidumbre de las condiciones futuras al considerar más de un escenario de cambio climático. Delinearon oportunidades e identificaron los siguientes pasos para la implementación de varias acciones, y asociaciones locales han comenzado a implementar acciones y realizar planificación adicional. Se requiere inversión continua en la adaptación de planes

  14. Adherence to the Mediterranean diet by nursing students of Murcia (Spain).

    PubMed

    Navarro-González, Inmaculada; López-Nicolás, Rubén; Rodríguez-Tadeo, Alejandra; Ros-Berruezo, Gaspar; Martínez-Marín, Mariano; Doménech-Asensi, Guillermo

    2014-07-01

    INTRODUCCIÓN: La dieta Mediterránea está reconocida como una de los patrones dietéticos más saludables pero, incluso en los propios países mediterráneos se está produciendo un deterioro y abandonando de la misma. Los hábitos dietéticos quedan establecidos generalmente durante la adolescencia pero durante el periodo universitario los estudiantes pueden sufrir cambios importantes en su estilo de vida. El índice KIDMED está reconocido como una buena herramienta para la evaluación de la adherencia a la dieta mediterránea (ADM).

  15. [Lacosamide as an alternative in the treatment of post-surgery neuropathic pain in an allergic patient].

    PubMed

    Monge-Márquez, María Estefanía; Márquez-Rivas, Javier; Mayorga-Buiza, María José; Rivero-Garvía, Mónica

    2013-10-01

    Introduccion. El dolor neuropatico es una entidad que no se conoce bien. Afecta a un porcentaje significativo de la poblacion. Su principal problema radica en que puede llegar a ser una patologia bastante invalidante. El tratamiento principal se basa fundamentalmente en dos farmacos: gabapentina y pregabalina. Otros farmacos, como los antidepresivos, los opioides o los antagonistas de receptores de N-metil D-aspartato tambien pueden utilizarse en combinacion con los farmacos principales. A pesar de esto, el tratamiento es poco satisfactorio. Ademas, debe considerarse que pueden existir pacientes que presenten alergia a los dos farmacos principales. Caso clinico. Mujer de 36 años, afecta de dolor neuropatico secundario a una cirugia de neurinoma del plexo braquial, cuyo tratamiento con gabapentina o pregabalina no era posible por tener antecedentes personales de alergia. Sin embargo, el tratamiento con otro farmaco (lacosamida) resulto muy efectivo, al presentar muy buena respuesta. Conclusion. La lacosamida es un farmaco antiepileptico de tercera generacion, eficaz, seguro y con pocos efectos secundarios. Se ha considerado una buena opcion terapeutica para el tratamiento del dolor neuropatico en pacientes alergicos a la pregabalina.

  16. [Barriers and Facilitators in the Recruitment and Retention of Heterosexual Couples for Preventive Interventions.

    PubMed

    Hernández-Hernández, Alberto L; Perez-Jimenez, David

    2010-01-01

    El Reclutamiento y la Retención (R&R) de participantes es fundamental para el éxito de estudios y para el desarrollo de intervenciones preventivas. El R&R de participantes determina la validez y efectividad de estos programas. En este trabajo examinamos algunos de los factores que facilitan y dificultan el R&R en los proyectos preventivos y ofrecemos algunas alternativas para mejorar los índices de R&R. Realizamos dos estudios, en el primero administramos el Instrumento de Informatión, Motivatión y Conductas-Español (IIMC-E) a un grupo de 26 parejas heterosexuales (52 participantes). En el segundo, entrevistamos a 5 parejas VIH discordantes (10 participantes). Encontramos que el 75% de los/las participantes indicó que su trabajo era una de las principales barreras que dificultan la asistencia a las actividades. Otras barreras son las responsabilidades laborales y familiares. Encontramos que la principal barrera fue el miedo a la revelación del estado serlógico. Los principales facilitadores del R&R son la coordinación adecuada y el seguimiento telefónico ofrecido por parte del personal del proyecto. Concluimos que en el desarrollo e implantación de programas de prevención el investigador/a debe tomar en cuenta la adaptación de aspectos logísticos como la disponibilidad y las necesidades particulares de los/las participantes.

  17. Evolución de planetas gigantes y posibilidades de su detección directa

    NASA Astrophysics Data System (ADS)

    Brunini, A.; Benvenuto, O. G.

    Desde la reciente detección de planetas gigantes orbitando estrellas cercanas de tipo solar por medio de efecto Doppler, uno de los principales problemas, en cuanto al estudio de los sistemas planetarios extrasolares, se refiere a la posibilidad de obtener evidencia directa de su existencia. Esto parece ser factible gracias a que en un futuro cercano entrarán en operación algunos telescopios especialmente adecuados a estos propósitos. Por tal motivo, hemos comenzado desde hace un tiempo un esfuerzo en cuanto al estudio de la evolución planetaria. A tales efectos hemos adaptado el código de evolución estelar de nuestro Observatorio al caso planetario. Las principales diferencias entre el caso estelar y el planetario se encuentran en la ecuación de estado. A tales fines hemos incluído la reciente ecuación de estado de Saumon, Chabrier y Van Horn, las opacidades radiativas de Guillot et al., procesos de quema de Deuterio, etc. También se ha considerado la posible existencia de fases de hielo y roca en el interior planetario. Por el momento hemos despreciado los efectos de la rotación planetaria. Con este código hemos computado la evolución de planetas con masas desde 10 hasta 0.3 masas de Júpiter. Utilizando nuestros resultados numéricos discutimos la detectabilidad de estos objetos en condiciones realistas.

  18. [Not Available].

    PubMed

    Fort Casamartina, Eduard; Arribas Hortiguela, Lorena; Bleda Pérez, Carmen; Muñoz Sánchez, Carme; Peiro Martínez, Imma; Perayre Badía, María; Clopés Estela, Ana

    2016-06-03

    Durante la última década, el conocimiento de nuevos mecanismos implicados en el desarrollo del cáncer ha permitido el diseño de nuevos fármacos para su tratamiento y la mayor parte de ellos son fármacos que se administran por vía oral. Uno de los principales problemas de los pacientes oncohematológicos es la desnutrición, que suele tener causas multifactoriales (de la propia enfermedad, de los pacientes y de los diferentes tratamientos administrados). Para minimizar el impacto de la desnutrición es necesaria una intervención nutricional, ya sea adaptando la dieta o mediante la instauración de soporte nutricional artificial, en función de la gravedad de cada caso. En cualquier paciente que esté recibiendo un tratamiento oncológico hay que evaluar las posibles interacciones que pueden existir con el soporte nutricional instaurado, ya sea dieta oral, suplementación oral o nutrición enteral. Estas interacciones pueden disminuir la eficacia, aumentar la toxicidad de los tratamientos o producir déficits nutricionales. Se detallan las principales interacciones que se pueden producir, las interacciones entre los tratamientos oncológicos y el soporte nutricional.

  19. [Lung eosinophilic syndrome: clinical presentation and cases report].

    PubMed

    Egea, N; Merlo, A; Esponda, L; Cazaux, A; Cambursano, V H; Cortés, J R

    2014-01-01

    Introducción: El síndrome de eosinofilia pulmonar se caracteriza por un grupo de patologías que presentan afección clínico – radiológica pulmonar con eosinofilia periférica o en parénquima pulmonar en su evolución. Materiales y métodos: Se describen las características de presentaciones clínico-radiológicas y evolutivas de pacientes atendidos entre 2007 y 2010 en Hospital Rawson. Resultados: Sobre 8 casos, se observó mayor número de casos en mujeres. Los signos y síntomas principales fueron tos, disnea, fiebre y sibilancias. Los hallazgos radiológicos más prevalentes fueron patrón alveolar y alveolointersticial. En la TAC el más frecuente fue el patrón en vidrio esmerilado. La eosinofilia periférica presentó valores entre 550 y 10.000 cel/mm3. Los pacientes fueron abdordados inicialmente como neumonía adquirida en la comunidad en el 62% de los casos. Los diagnósticos principales realizados fueron neumonía eosinofílica aguda y crónica, ambas con respuesta a esteroides. Conclusiones: El síndrome de eosinofilias pulmonares comparte características clínico-radiológicas comunes con entidades de mayor prevalencia, particularmente NAC.

  20. [Not Available].

    PubMed

    Fort Casamartina, Eduard; Arribas Hortiguela, Lorena; Bleda Pérez, Carmen; Muñoz Sánchez, Carme; Peiro Martínez, Imma; Perayre Badía, María; Clopés Estela, Ana

    2016-01-01

    Durante la última década, el conocimiento de nuevos mecanismos implicados en el desarrollo del cáncer ha permitido el diseño de nuevos fármacos para su tratamiento y la mayor parte de ellos son fármacos que se administran por vía oral. Uno de los principales problemas de los pacientes oncohematológicos es la desnutrición, que suele tener causas multifactoriales (de la propia enfermedad, de los pacientes y de los diferentes tratamientos administrados). Para minimizar el impacto de la desnutrición es necesaria una intervención nutricional, ya sea adaptando la dieta o mediante la instauración de soporte nutricional artificial, en función de la gravedad de cada caso. En cualquier paciente que esté recibiendo un tratamiento oncológico hay que evaluar las posibles interacciones que pueden existir con el soporte nutricional instaurado, ya sea dieta oral, suplementación oral o nutrición enteral. Estas interacciones pueden disminuir la eficacia, aumentar la toxicidad de los tratamientos o producir déficits nutricionales. Se detallan las principales interacciones que se pueden producir, las interacciones entre los tratamientos oncológicos y el soporte nutricional. PMID:27269219

  1. Modos de produccion cientifica: Culturas y metodologias de investigacion en la Universidad de Cadiz

    NASA Astrophysics Data System (ADS)

    Gonzalez Ramos, Ana M.

    2004-12-01

    Este trabajo de investigacion supone un modelo teorico de caracter aplicado, que proporciona la oportunidad de evaluar la produccion cientifica de los investigadores. Se encuadra dentro de la tradiccion de la estadistica aplicada y la sociologia del conocimiento. Atiende especialmente a dos conjuntos de temas de interes, por una parte, las caracteristicas principales que determinan el nivel y tipo de produccion academica producida por las unidades de investigacion y por los propios investigadores; por otra, la utilizacion que se hace de los metodos y tecnicas de investigacion puesto que de ello tambien depende el modo de produccion cientifica. Los puntos novedosos de esta tesis son: la medicion cuantitativa del objeto de estudio, la suma de los productos y las condiciones externas a la produccion del conocimiento mas otros elementos internos como las caracteristicas de los investigadores y la metodologia utilizada para desarrollar sus trabajos; y, finalmente, el uso de las nuevas tecnologias. El aprovechamiento de los recursos estadisticos y las fuentes de informacion secundarias se complementan con el diseno propio de una encuesta donde se implementa las caracteristicas descritas en un capitulo anterior sobre los metodos cientificos mas idoneos descritos en los principales manuales y articulos cientificos desde distintas disciplinas de conocimiento. Dicha encuesta ha sido desarrollada como un programa propio y en base a los mas innovadores usos de la tecnologia en la metodologia de encuestas.

  2. [Enhancement of motor relearning and functional recovery in stroke patients: non-invasive strategies for modulating the central nervous system].

    PubMed

    Bravo-Esteban, Elisabeth; López-Larraz, Eduardo

    2016-03-16

    Introduccion. La mayoria de los pacientes que han sufrido un ictus no recuperan el estado funcional basal de la extremidad superior afecta y sufren una grave limitacion que permanece en la fase cronica de la enfermedad y que repercute de manera devastadora en su calidad de vida. Por ello, las estrategias de neurorrehabilitacion tratan de evitar o minimizar las posibles disfunciones sensitivomotoras asociadas al ictus mediante la promocion de cambios plasticos en el sistema nervioso central. Desarrollo. La reorganizacion cerebral que tiene lugar tras el ictus puede promover la recuperacion motora y funcional de los sujetos con ictus. No obstante, tras la lesion, tambien se pueden iniciar cambios neuroplasticos maladaptativos responsables del desarrollo de trastornos sensitivomotores, como el sindrome de espasticidad. Las estrategias no invasivas de estimulacion cerebral, como la estimulacion con corriente directa y la estimulacion magnetica transcraneal, son unas tecnicas ampliamente utilizadas que, aplicadas sobre la corteza motora primaria, pueden modificar la excitabilidad de los circuitos neuronales y las funciones cognitivas, tanto en las personas sanas como en los pacientes con afectacion neurologica. Asimismo, los sistemas de interfaces cerebro-maquina tambien son capaces de generar esa reorganizacion por medio de la asociacion contingente y simultanea entre la activacion cerebral y la estimulacion periferica. Conclusiones. Se evidencian los efectos positivos de las estrategias de neurorrehabilitacion citadas previamente en la potenciacion de la reorganizacion cortical despues del ictus, asi como en la paliacion de los efectos adversos asociados al desarrollo de la espasticidad.

  3. [The use of therapeutic writing in an institutional context].

    PubMed

    Reyes-Iraola, Adriana

    2014-01-01

    Introducción: se expone el efecto del uso de la escritura en un espacio terapéutico-institucional, como un medio para lograr el cambio terapéutico en el paciente y una mayor eficiencia de los tiempos y espacios institucionales. Métodos: se muestran y se sustentan teóricamente en el contexto de la terapia narrativa y colaborativa diferentes formas de uso del documento escrito, además de ejemplos de ellos con la presentación de extractos de escritos de los participantes. La muestra fue conformada por pacientes que acudieron a un hospital de psiquiatría a recibir tratamiento (por medio de internamiento o consulta externa). Resultados: la escritura y el lenguaje oral intercambian significados en un continuo paralelo y demuestran que el proceso terapéutico se produce más allá del tiempo y espacio terapéutico institucional, lo cual alienta las ventajas que ofrece el uso del lenguaje escrito en los procesos psicoterapéuticos orales. Conclusión: la escritura es un recurso intelectual que facilita el pensamiento, pues al escribir la propia experiencia, los eventos que la conforman se logran organizar en el tiempo, lo cual genera una percepción del cambio, una representación de significados y promueve la autoeficacia al producir diferentes relatos de los eventos y la experiencia.

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

    PubMed Central

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

    2010-01-01

    La historia de la migración México-Estados Unidos se caracteriza por una serie de periodos durante los cuales los patrones migratorios se transforman y evolucionan como respuesta a los cambios en la política migratoria de Estados Unidos. En la década de 1990 se dio uno de estos cambios, lo que provocó el paso de la ‘era de la contradicción’ a la ‘era de la marginalización’. Actualmente, un gran número de migrantes indocumentados permanecen al margen de la ley, precisamente en un periodo en el que las penas se han incrementado y la persecución ha alcanzado niveles récord. De manera cada vez más notoria, los migrantes indocumentados, por la represión interna y fronteriza, quedan obligados a romper los lazos que los vinculaban con sus lugares de destino, pero al mismo tiempo se sienten cada vez más extraños en una tierra donde la aplicación de políticas antiinmigrantes es cosa de todos los días, lo que los sitúa en una posición de marginalización y gran vulnerabilidad. PMID:21209790

  5. Atlas de aves: Un metodo para documentar distribucion y seguir poblaciones

    USGS Publications Warehouse

    Robbins, C.S.; Dowell, B.A.; Dawson, D.K.; Alvarez-Lopez, Humberto; Kattan, Gustavo; Murcia, Carolina

    1988-01-01

    Los Atlas de Aves son proyectos nacionales o regionalies para trazar en mapas la distribucion en reproduccion de cada especie de ave. Ese procedimiento se esta usando en Europa, Australia, Nueva Zelanda, Norteamerica, y partes de Africa. El tama?o de los cuadrados varia de medio grado de latitud y Iongitud hasta 5 x 5 km. El trabajo de campo de cada proyecto exige aproxlmadamente cinco a?os, pero los aficionados pueden llevar a cabo la mayor parte del trabajo. Es posible almacenar los resultados en un computador personal. Hay muchos beneficios: (I) se presenta la distribucion corriente de las aves de la nacion, del estado, o de la Iocalidad; (2) se desarrolla nueva informacion especialmente sobre especies raras o en peligro; (3) se descubren areas que tienen una avlfauna sobresaliente o habitats raros y ayuda a su proteccion, (4) se documentan cambios de dlstribucion; (5) se pueden usar para documentar cambios de poblacion, especialmente en los tropicos donde otros metodos son mas dificiles de usar porque hay muchas especies y no hay muchos observadores calificados en la identificacion de sonidos de las aves; (6) son proyectos buenos de investigacion para estudiantes graduados; (7) los turistas y los jefes de excursiones de historia natural pueden contribuir con muchas informaciones

  6. RETOS EN LA INTERVENCIÓN CON ADOLESCENTES PUERTORRIQUEÑOS/AS QUE MANIFIESTAN COMPORTAMIENTO SUICIDA*

    PubMed Central

    Vélez, Yovanska Duarté; Dávila, Paloma Torres; Hernández, Samariz Laboy

    2015-01-01

    Presentamos un estudio de caso de una adolescente puertorriqueña con comportamiento suicida. Esta comenzó una Terapia Socio Cognitivo-Conductual para el Comportamiento Suicida (TSCC-CS) de tipo ambulatorio luego de una hospitalización por intento suicida. La TSCC-CS incorpora una perspectiva ecológica y de desarrollo a la terapia cognitivo-conductual. Inicialmente mostró baja autoestima y severos síntomas depresivos y de ansiedad. Al finalizar el tratamiento, manifestó un cambio significativo en su sintomatología clínica y evidenció una mejoría en sus destrezas de manejo. No presentó ideas suicidas durante meses previos, ni durante el seguimiento. El análisis de este caso permitió realizar cambios en el protocolo de tratamiento, particularmente en las sesiones de familia y de comunicación con el fin de aumentar la viabilidad del tratamiento. PMID:26702337

  7. [Application of an obesity treatment protocol for 2 years].

    PubMed

    Carnero Gregorio, Miguel; Álvarez Freire, Paula; Molares Vila, Alberto; Álvarez González, Myrian; Carnero Gregorio, Oscar; Arias Álvarez, José Ramón; Blach Italiani, Miguel Ángel; Villaverde Taboada, Carlos; Pérez Méndez, Luisa Fernanda

    2014-02-01

    Objetivo: Evaluar la eficacia de un protocolo clínico para pacientes obesos utilizado en la consulta de obesidad del Complexo Hospitalario Universitario de Vigo (CHUVI). Pacientes y métodos: En el estudio participaron 47 pacientes procedentes de la consulta de obesidad del CHUVI. Todos ellos fueron evaluados en consulta y siguieron el protocolo de obesidad durante un periodo de 2 años. Se evaluaron variables como el peso, el IMC y los grados de obesidad en el momento inicial y final. Resultados y discusión: En pacientes obesos entre 26 y 65 años se observa una tendencia a disminuir su grado de obesidad, con diferencias significativas en el 2012 respecto al 2010. Hay diferencias de comportamiento entre hombres y mujeres en cuanto al cambio de graduación en la obesidad. Conclusiones: En nuestro estudio hemos comprobado diferencias de comportamiento entre hombres y mujeres en cuanto al cambio de graduación en la obesidad; en las mujeres hay una mayor tendencia a reducirlo.

  8. [Structural and functional changes of the hippocampus in patients with multiple sclerosis and their relationship with memory processes].

    PubMed

    Cruz-Gómez, Álvaro J; Belenguer-Benavides, Antonio; Martínez-Bronchal, Beatriz; Fittipaldi-Márquez, M Sol; Forn, Cristina

    2016-01-01

    Introduccion. Una de las alteraciones cognitivas mas prevalentes en los pacientes con esclerosis multiple son los problemas de codificacion de la informacion (tanto verbal como visual), proceso relacionado con el hipocampo. Objetivo. Estudiar la relacion entre los procesos de aprendizaje y retencion de la informacion a largo plazo con el volumen hipocampal y la conectividad funcional (CF) en pacientes con esclerosis multiple comparados con un grupo control. Sujetos y metodos. Ambos grupos fueron evaluados con la bateria neuropsicologica breve, que incluye pruebas de memoria verbal y visual. Se realizo el estudio de volumetria de la sustancia gris mediante la tecnica de morfometria basada en el voxel y un estudio de CF de voxel de semilla centrado en la zona de interes (hipocampo). Se realizaron analisis de asociacion entre rendimiento en memoria y cambios volumetricos y de CF. Resultados. Los resultados mostraron atrofia en la sustancia gris en el hipocampo izquierdo y una menor CF entre el hipocampo izquierdo y el troncoencefalo, el cerebelo, el giro fusiforme y el giro temporal superior en los pacientes respecto al grupo control. En el grupo de pacientes se observa una correlacion positiva entre la sustancia gris en ambos hipocampos y el rendimiento en memoria verbal, asi como una correlacion positiva entre el rendimiento en memoria visual y la CF entre el hipocampo izquierdo y diversas regiones temporales. Conclusiones. Los resultados muestran una relacion entre el rendimiento de memoria verbal y visual, y cambios estructurales y funcionales en el hipocampo en pacientes con esclerosis multiple.

  9. [The cardiovagal, cardiosympathetic and vasosympathetic arterial baroreflexes and the neural control of short-term blood pressure].

    PubMed

    Robles-Cabrera, Adriana; Michel-Chávez, Anaclara; Callejas-Rojas, Rodolfo C; Malamud-Kessler, Caroline; Delgado, Guillermo; Estañol-Vidal, Bruno

    2014-12-01

    Introduccion. Los factores que modulan la presion arterial a corto plazo se encuentran puntualmente regulados para mantenerla dentro de valores de referencia. Esto se logra gracias a la existencia de mecanismos de autorregulacion, tanto humorales como nerviosos. Los mecanismos neurogenicos son reflejos y su resultado se observa en cambios de presion arterial de forma inmediata, latido a latido. Desarrollo. Los reflejos nerviosos cardiovasculares se encuentran mediados por los barorreceptores arteriales, a traves de los efectores cardiovagal, cardiosimpatico y vasosimpatico. El barorreceptor es estimulado cuando el volumen de sangre eyectado por el ventriculo distiende las paredes arteriales del seno carotideo y la aorta proximal y estimula los mecanorreceptores situados en la adventicia de estos vasos. El estimulo aferente viaja hasta el nucleo del haz solitario en el bulbo raquideo y otras areas en el puente donde se integran estos reflejos y la parte eferente genera cambios compensatorios en la frecuencia cardiaca y el tono del musculo liso vascular. Esta modificacion subita es la responsable de la variabilidad de la presion arterial latido a latido (corto plazo). Conclusion. Se realiza una revision sobre la historia, la fisiologia y los experimentos de los barorreflejos cardiovagal, cardiosimpatico y vasosimpatico y su influencia en la variabilidad de la presion arterial a corto plazo.

  10. Regulación del flujo sanguíneo uterino. II. Funciones de estrógeno y receptores estrogénicos α/β en acciones genómicas y no-genómicas del endotelio uterino *

    PubMed Central

    Mayra, Pastore R.; Rosalina, Villalón L.; López, Gladys; Iruretagoyena, Jesús; Magness, Ronald

    2015-01-01

    Resumen El embarazo está marcado por cambios y adaptaciones cardiovasculares que son importantes para el crecimiento y mantenimiento de la placenta y el feto. Durante este periodo, las adaptaciones vasculares uterinas manifiestan cambios clasificados como de corto o largo plazo los cuales están relacionados con adaptaciones vasodilatadoras, angiogénicas o de remodelación. El estrógeno y los receptores estrogénicos clásicos (REs), RE-α y RE-β, han demostrado ser parcialmente responsables por facilitar el incremento dramático en el fluido sanguíneo uterino necesario durante el embarazo. En ésta revisión bibliográfica se discuten la base estructural para la diversidad y selectividad funcional de los REs por el estrógeno, el papel de los REs sobre los efectos genómicos y no-genómicos en células endoteliales de arterias uterinas (CEAU). Estos temas integran el conocimiento científico sobre la regulación molecular de CEAU para mantener el incremento fisiológico en la perfusión útero-placentaria observada durante un embarazo normal. PMID:26113751

  11. [Effect of alcohol on electrical organisation in the brain during a visuospatial working memory task and its relationship with the menstrual cycle].

    PubMed

    Sanz-Martin, Araceli; Hernández-González, Marisela; Guevara, Miguel Ángel; Santana, Gloria; Gumá-Díaz, Emilio

    2014-02-01

    Introduccion. El metabolismo del alcohol y el desempeño de muchas funciones cognitivas pueden variar a lo largo del ciclo menstrual. Tanto la ingestion de alcohol como las variaciones hormonales durante el ciclo menstrual se asocian con cambios caracteristicos en la actividad electroencefalografica. Objetivo. Determinar si la actividad electroencefalografica durante una tarea de memoria de trabajo es afectada por el consumo agudo de alcohol, y si dicha actividad varia en funcion del ciclo menstrual. Sujetos y metodos. Muestra de 24 mujeres que ingirieron alcohol o placebo durante las fases folicular y lutea temprana. Se registro el electroencefalograma durante la ejecucion de una tarea de memoria de trabajo visuoespacial. Resultados. Aunque el alcohol no deterioro el rendimiento de la tarea de memoria de trabajo, si produjo en el electroencefalograma una disminucion de la potencia relativa de theta y una menor correlacion frontoparietal derecha en las bandas theta y alfa2. Unicamente las mujeres alcoholizadas en la fase folicular presentaron una mayor potencia relativa de alfa1, que podria indicar menor nivel de alertamiento y atencion. Conclusiones. Estos resultados contribuyen a una mejor comprension de los mecanismos cerebrales que subyacen a los cambios cognitivos con el alcohol y su relacion con el ciclo menstrual.

  12. [Food-related lifestyles and eating habits inside and outside the home in the Metropolitan Region of Santiago, Chile].

    PubMed

    Schnettler, Berta; Peña, Juan Pablo; Mora, Marcos; Miranda, Horacio; Sepúlveda, José; Denegri, Marianela; Lobos, Germán

    2013-01-01

    Objetivo: Distinguir tipologías de consumidores en base a su estilo de vida en relación a la alimentación en las principales comunas de la Región Metropolitana de Santiago, Chile, y caracterizarlas según sus hábitos de consumo de alimentos dentro y fuera del hogar, características sociodemográficas y su nivel de satisfacción con su alimentación. Material y método: Se aplicó un cuestionario estructurado a una muestra de 951 personas en las principales comunas de la Región Metropolitana de Santiago (más de 100.000 habitantes). El instrumento de recogida de información incluyó una adaptación del cuestionario de estilos de vida en relación a la alimentación (FRL) y la escala SWFL (Satisfaction with Food-related Life). Se consultaron los hábitos de consumo de alimentos dentro y fuera del hogar y variables de clasificación sociodemográfica de los encuestados. Resultados: Mediante análisis cluster se distinguieron cinco tipologías con diferencias significativas en los cinco componentes obtenidos del FRL, con análisis factorial de componentes principales. Las tipologías presentaron distinto perfil de género, edad y nivel socioeconómico y difirieron en los puntajes obtenidos en la SWFL. Se diferenciaron en la frecuencia en que la persona almuerza, toma once y cena en su hogar. Respecto a las comidas fuera del hogar, las tipologías se distinguieron según la frecuencia de comidas en restaurantes, locales de comida rápida y en la compra de comida preparada. Conclusiones: Un estilo de vida en relación a la alimentación con baja implicación y disfrute de los alimentos se asocia con un mayor nivel socioeconómico y menor edad de las personas. Adicionalmente, se asocia con comportamientos alimentarios poco saludables y no beneficiosos para las personas, como una mayor frecuencia de comidas en restaurantes y de compra de comida preparada, junto a una menor frecuencia de comidas en el hogar, lo que estaría influyendo en un nivel inferior de

  13. Fragmented coastal boundary layer induced by gap winds

    NASA Astrophysics Data System (ADS)

    Caldeira, Rui M. A.; Iglesias, Isabel; Sala, Iria; Vieira, Rui R.; Bastos, Luísa

    2015-04-01

    The oceanic impact of offshore-localized winds in the NW Iberian Peninsula was studied. Satellite and in situ observations showed the formation of plumes protruding offshore from the coast. To study the dynamics of such episodes tee Coupled-Ocean-Atmosphere-Wave- Sediment Transport Modeling System (COAWST) was used to reproduce the coastal conditions of the nortwestern Iberian Peninsula, allowing the concurrent representation of local winds, waves, currents, and rivers runoff. The use of coupled models is of outmost importance in order to accurately study the impact of the local winds on the coastal currents. The NW Iberian Peninsula has prominent capes, promontories and submarine canyons, which produce persistent hydrodynamic features. Thus far, the scientific literature shows that the western Iberian rivers produce a recurrent combined plume often denominated as the Western Iberian Buoyant Plume (WIBP) which increases the stratification of the water column and produces a vertical retention mechanism that keeps the biological material inshore. The WIBP extends northward along the coast (over the inner-shelf), and forms a front with the warmer and more saline surface (offshore) waters. However during episodes of strong offshore winds this coastal boundary layer is broken interrupting the WIBP. Coastal orography allows the formation of down-valley winds that produce coastal jets, promoting the offshore transport of pollutants, larvae and sediments. Acknowledgments: Acknowledgments: Numerical model solutions were calculated at CIIMARs HPC unit, acquired and maintained by FCT pluriannual funds (PesTC/Mar/LA0015/2013), and RAIA (0313-RAIA-1-E) and RAIA.co (0520-RAIACO-1-E) projects. The NICC (POCTI/CTA/49563/2002) project provided databases for this work. Rui Caldeira was supported by funds from the ECORISK project (NORTE-07-0124-FEDER-000054), co-financed by the North Portugal Regional Operational Programme (ON.2 - O Novo Norte), under the National Strategic Reference

  14. Vegetation fire proneness in Europe

    NASA Astrophysics Data System (ADS)

    Pereira, Mário; Aranha, José; Amraoui, Malik

    2015-04-01

    the project SUSTAINSYS: Environmental Sustainable Agro-Forestry Systems (NORTE-07-0124-FEDER-000044), financed by the North Portugal Regional Operational Programme (ON.2 - O Novo Norte), under the National Strategic Reference Framework (QREN), through the European Regional Development Fund (FEDER), as well as by National Funds (PIDDAC) through the Portuguese Foundation for Science and Technology (FCT/MEC).

  15. Lithosphere structure from Cordillera Central to Cordillera Oriental (Dominican Republic)

    NASA Astrophysics Data System (ADS)

    Nuñez, Diana; Cordoba, Diego; Nuñez-Cornu, Francisco J.; Cotilla, Mario O.

    2015-04-01

    Located on the northern margin of the Caribbean Plate, the Island of Hispaniola is a tectonic collage produced by the oblique convergence to final collision of the Caribbean island-arc/back arc system with the North American Plate. West-central part of the Hispaniola Island consists of high topography bounded by dominantly reverse and oblique-slip faults along the edges of the uplifted mountain ranges. The eastern part of the island is much lower in elevation than the rest of the island and is not extensively affected by active faulting. Escarpments and lineaments forming west-north-west and north-west-striking boundaries of morphotectonic zones in the central part of the island closely follow island arc terrain boundaries and suggest that Cretaceous to Eocene island-arc structures were reactivated by early Miocene to Recent collisional and transpressional tectonics. The seismic data presented in this work correspond to Profile D of Caribe Norte project (2009). This profile is W - E oriented in a length of 450 km. The deployment was made of 140 land seismic stations of one vertical component and one land station of three components located near Hato Mayor. These stations were recording from 11th to 17th of April 2009. The seismic sources used in this line have been three land borehole explosions 1 Ton (S1, S2 and S3), one marine shooting line (LM4) and one earthquake occurred while seismic stations were recording the Profile D. Our study has characterized seismically basins and mountain ranges in the shallow crustal structure. The results have corroborated previous data and have provided slight changes respect to the previous studies in the area. The results establish the marked differences between N and S and from W to E. Particularly, Moho discontinuity increases towards the interior of the island from Bahamas Platform to the interior of the island but gets different maximum depth values being roughly 30 km deep in the western and central, while rises up to 24 km

  16. [Evaluation of hearing in patients with multiresistant tuberculosis].

    PubMed

    Ribeiro, Leandro; Sousa, Claudia; Sousa, Aida; Ferreira, Catarina; Duarte, Raquel; Faria E Almeida, António; Condé, Artur

    2015-01-01

    Introdução: A tuberculose multirresistente e a extensivamente resistente constituem atualmente a principal ameaça ao controlo da tuberculose a nível mundial. O seu tratamento exige o uso de um esquema terapêutico com fármacos de segunda linha por um período mínimo de 20 meses, onde se incluem aminoglicosídeos durante um período de cerca de oito meses. Estes estão associados a alterações cocleovestibulares permanentes. Material e Métodos: Estudo transversal que pretende avaliar a função auditiva em indivíduos que terminaram tratamento por tuberculose multirresistente (com esquema que incluia aminoglicosídeos) no Centro de Referência Regional para a Tuberculose Multirresistente da Sub-Região de Saúde do Norte entre os anos de 2009 e 2012. Os doentes que preencheram os critérios de inclusão foram convocados para a realização de: exame objetivo otorrinolaringológico, audiograma tonal e vocal, otoemissões acústicas por produtos de distorção nas frequências de 2000-5000 Hz e timpanograma. Resultados: Entre 2009 e 2012 foram referenciados 27 casos para o Centro de Referência para a tuberculose multirresistente da Região Norte, tendo-se verificado cinco óbitos. Dos 22 indivíduos convocados, compareceram 11. Estes possuíam idades compreendidas entre os 31 e os 59 anos (41 ± 10). A amicacina foi usada em 80% e a capreomicina nos restantes. Seis (60%) dos utentes estudados apresentaram surdez neurossensorial. As otoemissões acústicas foram negativas em todos os doentes com hipoacúsia neurossensorial, o que confirma a sua origem coclear. Discussão/ Conclusão: Os resultados deste estudo sugerem a necessidade de existir uma monitorização audiológica mais frequente nos indivíduos com tuberculose multirresistente tratados com aminoglicosídeos permitindo detectar mais precocemente a perda auditiva.

  17. Assessing the Cytotoxicity of Black Carbon As A Model for Ultrafine Anthropogenic Aerosol Across Human and Murine Cells: A Chronic Exposure Model of Nanosized Particulate Matter

    NASA Astrophysics Data System (ADS)

    Salinas, E.

    2015-12-01

    Combustion-derived nanomaterials or ultrafine (<1 μm) atmospheric aerosols are primarily products of anthropogenic activities, such as the burning of fossil fuels. Ultrafine particles (UFPs) can absorb other noxious pollutants including volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), toxic organic compounds, and heavy metals. The combination of high population density, meteorological conditions, and industrial productivity brings high levels of air pollution to the metropolitan area of El Paso, Texas, USA/ Ciudad Juarez, Chihuahua, Mexico, comprising the Paso del Norte air basin. A study conducted by scientists from the Research Triangle Park in North Carolina, analyzed sites adjacent to heavy-traffic highways in El Paso and elucidated higher UFP concentrations in comparison to previously published work exploring pollution and adverse health effects in the basin. UFPs can penetrate deep into the alveolar sacs of the lung, reaching distant alveolar sacs and inducing a series of immune responses that are detrimental to the body: evidence suggests that UFPs can also cross the alveolar-blood barrier and potentially endanger the body's immune response. The physical properties of UFPs and the dynamics of local atmospheric and topographical conditions indicate that emissions of nanosized carbonaceous aerosols could pose significant threats to biological tissues upon inhalation by local residents of the Paso del Norte. This study utilizes Black Carbon (BC) as a model for environmental UFPs and its effects on the immunological response. An in vitro approach is used to measure the ability of BC to promote cell death upon long-term exposure. Human epithelial lung cells (A549), human peripheral-blood monocytes (THP-1), murine macrophages (RAW264.7), and murine epithelial lung cells (LA-4) were treated with BC and assessed for metabolic activity after chronic exposure utilizing three distinct and independent cell viability assays. The cell viability

  18. Radiation Therapy and Cardiac Death in Long-Term Survivors of Esophageal Cancer: An Analysis of the Surveillance, Epidemiology, and End Result Database

    PubMed Central

    Gharzai, Laila; Verma, Vivek; Denniston, Kyle A.; Bhirud, Abhijeet R.; Bennion, Nathan R.; Lin, Chi

    2016-01-01

    Objective Radiation therapy (RT) for esophageal cancer often results in unintended radiation doses delivered to the heart owing to anatomic proximity. Using the Surveillance, Epidemiology, and End Results (SEER) database, we examined late cardiac death in survivors of esophageal cancer that had or had not received RT. Methods 5,630 patients were identified that were diagnosed with esophageal squamous cell carcinoma (SCC) or adenocarcinoma (AC) from 1973–2012, who were followed for at least 5 years after therapy. Examined risk factors for cardiac death included age (≤55/56-65/66-75/>75), gender, race (white/non-white), stage (local/regional/distant), histology (SCC/AC), esophageal location (<18cm/18-24cm/25-32cm/33-40cm from incisors), diagnosis year (1973-1992/1993-2002/2003-2012), and receipt of surgery and/or RT. Time to cardiac death was evaluated using the Kaplan-Meier method. A Cox model was used to evaluate risk factors for cardiac death in propensity score matched data. Results Patients who received RT were younger, diagnosed more recently, had more advanced disease, SCC histology, and no surgery. The RT group had higher risk of cardiac death than the no-RT group (log-rank p<0.0001). The median time to cardiac death in the RT group was 289 months (95% CI, 255–367) and was not reached in the no-RT group. The probability of cardiac death increased with age and decreased with diagnosis year, and this trend was more pronounced in the RT group. Multivariate analysis found RT to be associated with higher probability of cardiac death (OR 1.23, 95% CI 1.03–1.47, HR 1.961, 95% CI 1.466–2.624). Lower esophageal subsite (33–40 cm) was also associated with a higher risk of cardiac death. Other variables were not associated with cardiac death. Conclusions Recognizing the limitations of a SEER analysis including lack of comorbidity accountability, these data should prompt more definitive study as to whether a possible associative effect of RT on cardiac death

  19. Coastal Tectonics and Paleo-sea Level of Northwest Luzon, Philippines Constrained from Raised Coral Terraces

    NASA Astrophysics Data System (ADS)

    Maxwell, K. V.; Ramos, N. T.; Tsutsumi, H.; Duan, F.; Chou, Y. C.; Shen, C. C.

    2015-12-01

    Raised Holocene coral terraces in Badoc and Currimao, Ilocos Norte, Philippines are studied to constrain the Holocene coastal tectonics and sea level history of northwest Luzon, Philippines. Situated 80 km along the northern section of the Manila Trench, Currimao and Badoc, Ilocos Norte prove to be interesting sites for uplift studies along tectonically active coasts. In both localities, uplifted coral reef terraces are well preserved and often separated by meter-scale terrace risers while the lower terraces are usually rocky with well-formed notches. Two to three terrace steps were distinctly identified in both localities in which datable coral samples were gathered from the lower terrace steps (T1 and T2). In Currimao, uplifted coral platforms have two (or possibly three) terrace steps: the lower terrace step (T1) measured 3-3.5 m above mean sea level (amsl) while T2 measured 5 m amsl. Three (to possibly four) terrace steps are documented in Badoc in which the lowest terrace (T1) measured 1-2.5 m, followed by T2 which measured 3-3.5 m, and T3 which measured 4-5 m amsl. Age constraints based on 14C- and 230Th-dating of fossil corals reveal ~6.4 ky and ~6.8 ky for the lower terrace steps of Currimao and Badoc, respectively while ~1 ky-old corals were obtained from the upper terraces of Badoc Island at 4-5 m amsl. Based on these ages, we infer that the ~6 ky-old terraces correspond to the mid-Holocene marine transgression while the ~1 ky-old terrace is probably related to coseismic and/or aseismic uplift. While emerged coral platforms separated by meter-scale terrace risers suggest abrupt uplift mechanisms, emergence may also be attributed to aseismic uplift related to convergence and seamount subduction along the Manila Trench. Holocene uplift rates estimated in Currimao and Badoc are 0.5 to 0.8 mm/yr and 0.4 to 0.7 mm/yr, respectively and are comparatively lower than the maximum Holocene uplift rates reported in Pangasinan (~1.7 mm/yr) and eastern Mindanao (~1

  20. Mapa Geologico de Venezuela a Escala 1:750,000

    USGS Publications Warehouse

    Hackley, Paul C.; Urbani, Franco; Karlsen, Alex W.; Garrity, Christopher P.

    2006-01-01

    Se presenta un mapa geologico digital de Venezuela sobre un fondo de relieve sombreado. Los datos geologicos e hidrologicos del norte del rio Orinoco proceden de la digitalizacion de mapas geologicos en papel a escala 1:500.000. Estos datos fueron integrados con el mapa geologico digital del Escudo de Guayana Venezolano, a su vez derivado de hojas en papel a escala 1:500.000. La informacion sobre los tipos de fallas mostrados en el mapa es igual que en las fuentes originales. Los poligonos geologicos fueron atribuidos por edad, litologia y nombre de la unidad siguiendo el Codigo geologico de Venezuela. Se incorporaron revisiones significativas de la geologia de la Cordillera de la Costa a partir de las nuevas hojas integradas a escala 1:25.000. Toda esta informacion geologico-estructural se sobrepuso a una imagen de relieve sombreado, producida por el procesamiento de los datos de radar interferometrico con 90 m (3 arcosegundos) de resolucion espacial obtenidos por la mision topografica de radar del transbordador espacial (SRTM). Las areas de la base de datos del SRTM carentes de informacion fueron llenadas por medio de la interpolacion de los datos de las celdas adyacentes. Para producir la imagen de relieve sombreado se uso una direccion de iluminacion de 315 deg con un angulo de 65 deg sobre el horizonte. La proyeccion usada en el mapa es conica equidistante, con latitudes de 4 y 9 deg norte como paralelos estandar y una longitud de 66 deg al oeste como meridiano central. Los datos en el mapa proceden primordialment de hojas a escala 1:500.000 y el producto esta preparado para una impresion optima en escala 1:750.000. Los usuarios pueden obtener ampliaciones mayores, sin embargo no se garantiza la precision del mapa a escalas mas detalladas. Especialmente en la region de Guayana, al sobreponer los mapas geologicos sobre la reciente imagen SRTM, se notan grandes discrepancias no sistematicas tanto en contactos como en fallas. Esto es debido a que los mapas

  1. Seasonal and inter-annual dynamics of suspended sediment at the mouth of the Amazon river: The role of continental and oceanic forcing, and implications for coastal geomorphology and mud bank formation

    NASA Astrophysics Data System (ADS)

    Gensac, Erwan; Martinez, Jean-Michel; Vantrepotte, Vincent; Anthony, Edward J.

    2016-04-01

    Fine-grained sediments supplied to the Ocean by the Amazon River and their transport under the influence of continental and oceanic forcing drives the geomorphic change along the 1500 km-long coast northward to the Orinoco River delta. The aim of this study is to give an encompassing view of the sediment dynamics in the shallow coastal waters from the Amazon River mouth to the Capes region (northern part of the Amapa region of Brazil and eastern part of French Guiana), where large mud banks are formed. Mud banks are the overarching features in the dynamics of the Amazon-Orinoco coast. They start migrating northward in the Capes region. Suspended Particulate Matter (SPM) concentrations were calculated from satellite products (MODIS Aqua and Terra) acquired over the period 2000-2013. The Census-X11 decomposition method used to discriminate short-term, seasonal and long-term time components of the SPM variability has rendered possible a robust analysis of the impact of continental and oceanic forcing. Continental forcing agents considered are the Amazon River water discharge, SPM concentration and sediment discharge. Oceanic forcing comprises modelled data of wind speed and direction, wave height and direction, and currents. A 150 km-long area of accretion is detected at Cabo Norte that may be linked with a reported increase in the river's sediment discharge concurrent with the satellite data study period. We also assess the rate of mud bank migration north of Cabo Norte, and highlight its variability. Although we confirm a 2 km y-1 migration rate, in agreement with other authors, we show that this velocity may be up to 5 km y-1 along the Cabo Orange region, and we highlight the effect of water discharge by major rivers debouching on this coastal mud belt in modulating such rates. Finally, we propose a refined sediment transport pattern map of the region based on our results and of previous studies in the area such as the AMASSEDS programme, and discuss the

  2. Cascadia Earthquake and Tsunami Scenario for California's North Coast

    NASA Astrophysics Data System (ADS)

    Dengler, L.

    2006-12-01

    In 1995 the California Division of Mines and Geology (now the California Geological Survey) released a planning scenario for an earthquake on the southern portion of the Cascadia subduction zone (CSZ). This scenario was the 8th and last of the Earthquake Planning Scenarios published by CDMG. It was the largest magnitude CDMG scenario, an 8.4 earthquake rupturing the southern 200 km of the CSZ, and it was the only scenario to include tsunami impacts. This scenario event has not occurred in historic times and depicts impacts far more severe than any recent earthquake. The local tsunami hazard is new; there is no written record of significant local tsunami impact in the region. The north coast scenario received considerable attention in Humboldt and Del Norte Counties and contributed to a number of mitigation efforts. The Redwood Coast Tsunami Work Group (RCTWG), an organization of scientists, emergency managers, government agencies, and businesses from Humboldt, Mendocino, and Del Norte Counties, was formed in 1996 to assist local jurisdictions in understanding the implications of the scenario and to promote a coordinated, consistent mitigation program. The group has produced print and video materials and promoted response and evacuation planning. Since 1997 the RCTWG has sponsored an Earthquake Tsunami Education Room at county fairs featuring preparedness information, hands-on exhibits and regional tsunami hazard maps. Since the development of the TsunamiReady Program in 2001, the RCTWG facilitates community TsunamiReady certification. To assess the effectiveness of mitigation efforts, five telephone surveys between 1993 and 2001 were conducted by the Humboldt Earthquake Education Center. A sixth survey is planned for this fall. Each survey includes between 400 and 600 respondents. Over the nine year period covered by the surveys, the percent with houses secured to foundations has increased from 58 to 80 percent, respondents aware of a local tsunami hazard increased

  3. Retrospective Study of the Epidemiology and Clinical Manifestations of Cryptococcus gattii Infections in Colombia from 1997–2011

    PubMed Central

    Lizarazo, Jairo; Escandón, Patricia; Agudelo, Clara Inés; Firacative, Carolina; Meyer, Wieland; Castañeda, Elizabeth

    2014-01-01

    Background Cryptococcosis due to Cryptococcus gattii is endemic in various parts of the world, affecting mostly immunocompetent patients. A national surveillance study of cryptococcosis, including demographical, clinical and microbiological data, has been ongoing since 1997 in Colombia, to provide insights into the epidemiology of this mycosis. Methodology/Principal Findings From 1,209 surveys analyzed between 1997–2011, 45 cases caused by C. gattii were reported (prevalence 3.7%; annual incidence 0.07 cases/million inhabitants/year). Norte de Santander had the highest incidence (0.81 cases/million/year), representing 33.3% of all cases. The male: female ratio was 3.3∶1. Mean age at diagnosis was 41±16 years. No specific risk factors were identified in 91.1% of patients. HIV infection was reported in 6.7% of patients, autoimmune disease and steroids use in 2.2%. Clinical features included headache (80.5%), nausea/vomiting (56.1%) and neurological derangements (48.8%). Chest radiographs were taken in 21 (46.7%) cases, with abnormal findings in 7 (33.3%). Cranial CT scans were obtained in 15 (33.3%) cases, with abnormalities detected in 10 (66.7%). Treatment was well documented in 30 cases, with most receiving amphotericin B. Direct sample examination was positive in 97.7% cases. Antigen detection was positive for all CSF specimens and for 75% of serum samples. C. gattii was recovered from CSF (93.3%) and respiratory specimens (6.6%). Serotype was determined in 42 isolates; 36 isolates were serotype B (85.7%), while 6 were C (14.3%). The breakdowns of molecular types were VGII (55.6%), VGIII (31.1%) and VGI (13.3%). Among 44 strains, 16 MLST sequence types (ST) were identified, 11 of them newly reported. Conclusions/Significance The results of this passive surveillance study demonstrate that cryptococcosis caused by C. gattii has a low prevalence in Colombia, with the exception of Norte de Santander. The predominance of molecular type VGII is of concern

  4. [EFFECT OF A HEALTHY EATING AND PHYSICAL ACTIVITY INTERVENTION PROGRAM ON CHILHOOD OBESITY].

    PubMed

    Díaz Martínez, Ximena; Mena Bastías, Carmen; Celis-Moralesl, Carlos; Salas, Carlos; Valdivia Moral, Pedro

    2015-07-01

    Introducción: las intervenciones orientadas a la formación de estilos de vida saludable en edades tempranas podría ser una herramienta eficaz para reducir los niveles de obesidad en escolares. Objetivo: evaluar el efecto de una intervención en alimentación y actividad física (AF) en la reducción de la obesidad en escolares. Métodos: un total de 312 escolares participaron en esta intervención, la cual se aplicó durante cinco meses. Se desarrollaron talleres para la familia y los niños con material educativo basado en guías alimentarias chilenas, en conjunto con 45 minutos diarios de AF. El estado nutricional fue evaluado con el International Obesity Task Force. Los cambios en los hábitos alimentarios y de actividad física fueron evaluados mediante la aplicación de cuestionarios. Resultados: el Índice de Masa Corporal (IMC) disminuyó significativamente post intervención (-0,2 kg.m-2); al analizar estos resultados por sexo, solo los varones presentaron una reducción significativa (-0,3 kg.m-2). Resultados similares fueron observados para el perímetro de la cintura en varones (-0,4 cm). No obstante, al analizar el efecto de la intervención en aquellos escolares con sobrepeso u obesidad preintervención se observaron cambios significativos en el IMC, los cuales fueron asociados a cambios en la alimentación y los niveles de actividad física. Conclusiones: las intervenciones multidisciplinarias aplicadas a escolares del primer ciclo de enseñanza básica son efectivas a la hora de reducir los niveles de IMC e incrementar los niveles de actividad física y la calidad de la alimentación en escolares con sobrepeso u obesidad.

  5. Psychoeducative groups help control type 2 diabetes in a primary care setting.

    PubMed

    Cervantes Cuesta, Miguel Ángel; García-Talavera Espín, Noelia Victoria; Brotons Román, Josefa; Núñez Sánchez, M Ángeles; Brocal Ibáñez, Pedro; Villalba Martín, Pilar; Saura García, Carmen; Sánchez Esteban, Tomasa; Romero López-Reinoso, Helena; Delgado Aroca, Ma José; Sánchez Gil, Dolores; Meoro Avilés, Amparo; Soriano Palao, José

    2013-01-01

    Introducción: Los cambios en el estilo de vida mejoran el control de los diabéticos tipo 2, pero no sabemos cuales son las estrategias más eficientes para conseguir estos cambios. Hemos medido el impacto de una intervención psicoeducativa grupal en diabetes mediante hemoglobina glicosilada (HbA1c), índice de masa corporal (IMC) y factores de riesgo cardiovascular (FRCV). Métodos: Se trata de un ensayo clínico controlado, randomizado y multicéntrico, de 72 pacientes diabéticos tipo 2, edad media 63,08 AÑOs, 50% mujeres, HbA1c media 6.98% e IMC medio 30,48 kg/m2. Se comparó el efecto terapéutico de una intervención psicoeducativa grupal(GSE) con una educación diabetológica convencional (GC). Resultados: El GSE presentó una mayor reducción media de HbA1c, -0,51 ± 1,07 vs -0,06 ± 0,53% (p 0,003), un mayor grado de cumplimiento de los objetivos de control óptimo de HbA1c, 80% vs 48% (p 0,005) y una mayor reducción media de peso, -1,93 ± 3,57 vs 0,52 ± 1,73 kg (p 0,002), que el GC. También se objetivó una mejoría significativa de colesterol total, colesterol LDL, triglicéridos, tensión arterial sistólica y diastólica en GSE (todas las p < 0,05). Conclusiones: Los GSE de diabéticos tipo 2 consiguieron una mejoría significativa de HbA1c, IMC y FRCV, y superaron a la educación diabetológica convencional en el grado de cumplimiento de los objetivos de control óptimo de la diabetes. Debemos plantearnos cambios estructurales en nuestros programas asistenciales para introducir estos avances más eficientes en educación terapeútica de diabetes en atención primaria.

  6. [Not Available].

    PubMed

    Viñuela García, Manuel; Vera Ibáñez, Antonio; Colomer Poveda, David; Márquez Sánchez, Gonzalo; Romero Arenas, Salvador

    2016-01-01

    Introducción: actualmente los programas de entrenamiento interválicos de alta intensidad parecen ser una forma de optimizar el tiempo, provocando cambios en la composición corporal debido a la activación de diferentes mecanismos hormonales y metabólicos.Objetivo: observar el efecto de cuatro semanas de entrenamiento de esprints repetidos basados en la prueba de Wingate sobre la potencia y la composición corporal en adultos jóvenes.Métodos: los participantes (22,4 ± 1,8 años) fueron asignados aleatoriamente a un grupo experimental o a un grupo control. Antes de comenzar y al acabar el periodo experimental, a los sujetos se les realizó una densitometría de cuerpo completo y una prueba de Wingate. El grupo experimental realizó 12 sesiones de esprints repetidos, realizando de 3 a 6 esprints de 30 segundos con un tiempo de recuperación de 4 minutos. El grupo control continuó con su rutina diaria y no se le aplicó ningún tipo de intervención.Resultados: en el grupo experimental, la potencia media y máxima incrementó un 9,4-16,5% (p < 0,001). Además, disminuyó la masa grasa total un 8,1% (p < 0,028) y la grasa abdominal un 10,0% (p < 0,038). El grupo control no sufrió cambios en ninguna de las variables estudiadas.Conclusiones: cuatro semanas de entrenamiento de esprints repetidos basados en la prueba de Wingate con un volumen específico de ~3 minutos por sesión y una frecuencia de 3 sesiones por semana, muestra mejoras estadísticamente significativas en la potencia máxima y media. Además, provoca cambios en la composición corporal, principalmente en la masa grasa total y de la zona abdominal. PMID:27513499

  7. [Not Available].

    PubMed

    Viñuela García, Manuel; Vera Ibáñez, Antonio; Colomer Poveda, David; Márquez Sánchez, Gonzalo; Romero Arenas, Salvador

    2016-06-30

    Introducción: actualmente los programas de entrenamiento interválicos de alta intensidad parecen ser una forma de optimizar el tiempo, provocando cambios en la composición corporal debido a la activación de diferentes mecanismos hormonales y metabólicos.Objetivo: observar el efecto de cuatro semanas de entrenamiento de esprints repetidos basados en la prueba de Wingate sobre la potencia y la composición corporal en adultos jóvenes.Métodos: los participantes (22,4 ± 1,8 años) fueron asignados aleatoriamente a un grupo experimental o a un grupo control. Antes de comenzar y al acabar el periodo experimental, a los sujetos se les realizó una densitometría de cuerpo completo y una prueba de Wingate. El grupo experimental realizó 12 sesiones de esprints repetidos, realizando de 3 a 6 esprints de 30 segundos con un tiempo de recuperación de 4 minutos. El grupo control continuó con su rutina diaria y no se le aplicó ningún tipo de intervención.Resultados: en el grupo experimental, la potencia media y máxima incrementó un 9,4-16,5% (p < 0,001). Además, disminuyó la masa grasa total un 8,1% (p < 0,028) y la grasa abdominal un 10,0% (p < 0,038). El grupo control no sufrió cambios en ninguna de las variables estudiadas.Conclusiones: cuatro semanas de entrenamiento de esprints repetidos basados en la prueba de Wingate con un volumen específico de ~3 minutos por sesión y una frecuencia de 3 sesiones por semana, muestra mejoras estadísticamente significativas en la potencia máxima y media. Además, provoca cambios en la composición corporal, principalmente en la masa grasa total y de la zona abdominal.

  8. Effects of exercise on inflammation in cardiac rehabilitation.

    PubMed

    Roca-Rodríguez, María del Mar; Garrido-Sánchez, Lourdes; García-Almeida, Jose Manuel; Ruiz-Nava, Josefina; Alcaide-Torres, Juan; Gómez-González, Adela; Montiel-Trujillo, Angel; Tinahones-Madueño, Francisco

    2015-06-01

    Introducción: a los pacientes con riesgo cardiovascular se les recomiendan programas de pérdida de peso y dieta saludable, pero la eficacia de estos programas a la hora de reducir la mortalidad es controvertida. Objetivo: examinar los efectos agudos y a largo plazo de un programa de rehabilitación cardíaca de dos meses de duración sobre las quemocinas relacionadas con la inflamación en pacientes con enfermedad cardiovascular. Diseño: estudio de cohortes prospectivo. Métodos: se estudiaron 26 pacientes con enfermedad cardiovascular inscritos en un programa de rehabilitación cardíaca basado en intervenciones nutricionales y de ejercicio. Se analizaron el estilo de vida y variables clínicas, metabólicas e inflamatorias. Resultados: 88,5% eran hombres y la edad media fue de 54,9 ± 7,8 años. Al final del programa de rehabilitación cardíaca las variables del perfil glucémico y lipídico descendieron, excepto el colesterol de lipoproteínas de alta densidad, que aumentó. Ácido úrico, interleucina-6, interleucina-1 beta, adiponectina y leptina se mantuvieron estables. Interleucina-6 correlacionó positivamente con proteína C reactiva y negativamente con glucosa en sangre. Interleucina-1 beta correlacionó positivamente con proteína C-reactiva y negativamente con las cifras de presión arterial. Encontramos correlaciones significativas entre los cambios en interleucina-6 e interleucina- 1 beta y los cambios en los equivalentes metabólicos y proteína C-reactiva, antes y después del programa de rehabilitación cardíaca. No se observaron correlaciones significativas con peso, circunferencia de cintura o masa grasa. Conclusiones: la rehabilitación cardiaca mejora las variables antropométricas, las cifras de presión arterial, así como el perfil de lípidos y los resultados de la ergometría. Sin embargo, no se observaron cambios con respecto al estado inflamatorio.

  9. [Change in the therapeutic strategy when faced with an inadequate response to the pharmacological treatment of attention deficit hyperactivity disorder].

    PubMed

    Gandía-Benetó, Rubén; Mulas, Fernando; Roca, Patricia; Ortiz-Sánchez, Pedro; Abad-Mas, Luis

    2015-02-25

    Introduccion. El trastorno por deficit de atencion/hiperactividad (TDAH) es un trastorno del neurodesarrollo cerebral de origen biologico. Se estima que el 3-7% de los niños en edad escolar presentan TDAH. Dentro del tratamiento farmacologico, las anfetaminas y el metilfenidato (MPH) son los mas utilizados. Aunque las tasas de respuesta al MPH son altas, las tasas de remision completa llegan solo al 56%. Un 25% de los pacientes que no responden al MPH si lo haria a otros estimulantes, y viceversa. Objetivo. Valorar clinicamente a los pacientes con deteccion de respuestas inadecuadas y la eficacia de un cambio a lisdexanfetamina dimesilato (LDX). Pacientes y metodos. Estudio observacional prospectivo. Se considero respuesta inadecuada al MPH aquella que presentaba falta de cobertura o de efecto. Se utilizaron las escalas de evaluacion Attention-Deficit/Hyperactivity Disorder Rating Scale IV (ADHD-RS-IV) y Clinical Global Impression-Severity (CGI-S) para la valoracion clinica, asi como la escala de evaluacion del deterioro funcional de Weiss (WFIRS) y el perfil de salud infantil (CHIP-AE). Tambien se recogieron los efectos adversos. Resultados. Cumplieron criterios de respuesta inadecuada al tratamiento 41 pacientes: 13,6 ± 3,4 años, 54,6 ± 13,2 kg, 158,5 ± 17,2 cm e indice de masa corporal de 20,9 ± 3,5 kg/m2. Motivos del cambio (no excluyentes): falta de cobertura (76%), falta de intensidad del efecto (68%) y presencia de efectos adversos con la medicacion anterior (16%). La puntuacion media basal y a los nueve meses, en la ADHD-RS, fue de 24,54 ± 6,3 frente a 12,01 ± 3,2 (p < 0,01), respectivamente, y para la CGI-S, de 5,09 ± 0,5 frente a 2,91 ± 0,8 (p < 0,01), respectivamente. El perfil de seguridad coincidio con el de otros tratamientos estimulantes para el TDAH. Conclusion. Cuando la respuesta al MPH presenta falta de cobertura o falta de efecto, el cambio a LDX se ha mostrado eficaz, con una mejoria en el 86,7% de los casos, similar a la de otros

  10. [Quality of the diet of the Spanish population over 80 years non-institutionalized].

    PubMed

    Hernández Galiot, Ana; Goñi Cambrodón, Isabel

    2015-06-01

    Introducción: los adultos mayores no institucionalizados son un colectivo que suele presentar alto riesgo de malnutrición. Detectar problemas nutricionales mediante indicadores de la calidad global de la dieta, es un reto para los profesionales de la salud, de utilidad para la planificación de políticas nutricionales. Objetivo: determinar la calidad global de la dieta de la población española mayor de 80 años no institucionalizada, para promover y fomentar la calidad de vida del anciano. Metodología: se seleccionaron las personas mayores de 80 años del Estudio Longitudinal Envejecer en España 2011-2013 (n = 159), residentes en diversas zonas españolas. Para valorar la calidad de la dieta se utilizó el índice de alimentación saludable (IAS), la frecuencia de consumo de alimentos y el grado de adhesión al patrón de dieta Mediterránea (ADM). Resultados: la población presentó valores de IAS cercanos a los correspondientes a una dieta saludable. Un porcentaje significativo necesitaba cambios en su alimentación, siendo los mayores de 90 años los que requirieron una mayor intervención dietética. La mayoría de la población cumplió las recomendaciones de la dieta mediterránea, aunque se observó bajo consumo de verduras, hortalizas, frutos secos y vino; y elevado consumo de embutidos. Conclusiones: la dieta consumida habitualmente por los españoles mayores de 80 años no institucionalizados presenta desajustes nutricionales que podrían corregirse realizando pequeños cambios en su patrón dietético. Determinar la calidad global de la dieta permite la planificación de estrategias de intervención para promover cambios alimentarios saludables y emprender acciones orientadas al mantenimiento de una salud óptima en el binomio envejecimiento-nutrición.

  11. [Effects of reforestation on tree pollen sensitization in inhabitants of Nuevo Leon, Mexico].

    PubMed

    Palma-Gómez, Samuel; González-Díaz, Sandra Nora; Arias-Cruz, Alfredo; Macías-Weinmann, Alejandra; Amaro-Vivian, Laura Elizabeth; Pérez-Vanzzini, Rafael; Gutiérrez-Mujica, José Julio; Yong-Rodríguez, Adrián

    2014-01-01

    Antecedentes: el cambio climático tiene consecuencias en la salud, el medio ambiente y la sociedad. Las áreas verdes urbanas son importantes en la planeación de las ciudades para promover la interacción de los ciudadanos con el ambiente y la salud. La falta de planeación y diseño de estas áreas y la mala selección de árboles han contribuido a aumentar la incidencia de alergia al polen entre la población. Con frecuencia los programas de reforestación ambiental no toman en cuenta el potencial alergénico de algunas especies. El gobierno de Nuevo León en los últimos cuatro años ha plantado cerca de 18 mil árboles de la especie Quercus, además de un número indeterminado de árboles de la especie Fraxinus, cuyo polen es alergénico. Objetivo: identificar el cambio en la sensibilización al polen de árboles de acuerdo con los programas de reforestación ambiental. Material y método: estudio restrospectivo y descriptivo en el que se analizaron las pruebas cutáneas positivas para polen de árboles de los últimos cuatro años, correlacionando entre la especie de árbol utilizada para la reforestación y el aumento de la sensibilidad a ésta. Resultados: se encontró un incremento estadísticamente significativo en la sensibilización al polen de las especies con las que se reforestó Nuevo León, además de disminución en la sensibilización a las especies con las que no se reforesta. Conclusiones: la reforestación contribuye, en cierta medida, al cambio en el patrón de la positividad de las pruebas cutáneas y puede traer como consecuencia exacerbaciones más frecuentes de enfermedades respiratorias. Es una actividad que debe ser regulada y asesorada siempre por expertos.

  12. Changes in body composition and cardiovascular risk indicators in healthy Spanish adolescents after lamb- (Ternasco de Aragón) or chicken-basic diets.

    PubMed

    Mesana Graffe, María Isabel; Santaliestra Pasías, Alba María; Fleta Zaragozano, Jesús; Campo Arribas, María del Mar; Sañudo Astiz, Carlos; Valbuena Turienzo, Inés; Martínez, Pilar; Horno Delgado, Jaime; Moreno Aznar, Luis Alberto

    2013-01-01

    Objetivo: Evaluar el efecto del consumo de cordero (Indicación Geográfica Protegida (IGP), Ternasco de Aragón) en los indicadores de salud, incluyendo la composición corporal y los factores de riesgo cardiovascular en estudiantes españoles jóvenes y sanos que viven en la zona de Aragón. Metodología: Se han evaluado los cambios producidos en la composición corporal y los factores de riesgo cardiovascular en dos períodos aleatorios, cruzados y controlados. 50 jóvenes fueron asignados aleatoriamente para seguir una dieta normocalórica con carne de cordero (Ternasco de Aragón) o el pollo. La composición corporal se evaluó a través de medidas antropométricas y el perfil de riesgo cardiovascular en suero se midió al inicio y después de consumir la carne de cordero o de pollo. Resultados: Se ha estudiado una muestra compuesta por hombres sanos (n = 22) y mujeres sanas (n = 28), con edades comprendidas entre 19,43 ± 0,85 años. El pliegue cutáneo suprailíaco y la circunferencia de la cintura disminuyeron de forma significativa (p < 0,05) en el grupo de consumo de cordero y no en el de pollo. No se observaron cambios significativos en el resto de variables en los dos grupos. Las concentraciones de triglicéridos y las concentraciones séricas de insulina disminuyeron de forma significativa (p < 0,05) en el grupo de consumo de cordero y no en el de pollo. Conclusiones: Los resultados sugieren que el consumo regular de carne de cordero (Ternasco de Aragón) se puede integrar en una dieta sana, variada y equilibrada, ya que los cambios observados en la composición corporal y en el perfil de riesgo cardiovascular son similares o incluso más favorables en el grupo que consumió cordero que en el grupo que consumió pollo.

  13. CARDIOVASCULAR RISK AND ASSOCIATED FACTORS IN ADOLESCENTS.

    PubMed

    do Prado Junior, Pedro Paulo; de Faria, Franciane Rocha; de Faria, Eliane Rodrigues; Franceschini, Sylvia do Carmo Castro; Priore, Silvia Eloiza

    2015-08-01

    Introducción: los cambios en el estilo de vida están relacionados con la exposición temprana de los adolescentes a las comorbilidades asociadas a la enfermedad cardiovascular. Estas condiciones pueden tener consecuencias en la edad adulta. Objetivo: determinar la prevalencia de riesgo cardiovascular y factores asociados en las tres fases de la adolescencia. Métodos: estudio transversal que incluye a adolescentes de 10-19 años en la ciudad de Viçosa, distribuidos en tres fases. Se evaluaron las pruebas de laboratorio, el índice de masa corporal clasificadas en Z-score, según el sexo y la edad, y el porcentaje de grasa corporal, clasificados por sexo. Se utilizó la prueba de chi-cuadrado, la partición de chi-cuadrado con corrección de Bonferroni y la regresión de Poisson. El nivel de significación fue < 0,05. El proyecto fue aprobado por el Comité de Ética en Investigación de la UFV en humanos. Resultados: el sobrepeso, la grasa corporal, el perfil lipídico, el comportamiento sedentario y la historia de enfermedades cardiovasculares en la familia fueron los factores de riesgo cardiovascular más prevalentes entre los adolescentes. Los adolescentes tenían tasas más altas de sobrepeso y grasa. En cuanto a las etapas, la inicial mostró un mayor porcentaje de individuos con comportamiento sedentario, sobrepeso y colesterol total y LDL en comparación con otras fases. Los individuos con cambios en el estado nutricional eran más propensos a desarrollar hipertensión, cambios en el colesterol total, LDL, triglicéridos, insulina, HOMA y HDL bajo, en comparación con los individuos sanos. Conclusiones: los factores de riesgo cardiovascular se han observado en personas cada vez más jóvenes y son factores importantes para identificar una población en riesgo.

  14. Influencia atmosférica en la rotación terrestre

    NASA Astrophysics Data System (ADS)

    Fernández, L. I.; Arias, E. F.; Brunini, C. A.

    Las observaciones de los parámetros de la orientación terrestre han alcanzado en estos últimos años una exactitud sin precedentes gracias al uso de modernas técnicas de geodesia espacial. Estudios previos han establecido que las variaciones en la rotación terrestre con períodos iguales o menores que dos años obedecen a cambios en la circulación atmosférica global. Para estos períodos puede comprobarse que existe un gran acuerdo entre las fluctuaciones de la longitud del día (LOD) y los cambios del momento angular atmosférico terrestre (AAM). Sin embargo, no existe un acuerdo general acerca de las causas que provocan las variaciones de largo período de la rotación de la Tierra, también conocidas como ``variaciones decenales''. En nuestro análisis examinamos las correlaciones entre las variaciones de los valores de LOD y las fluctuaciones en la componente polar del momento angular atmosférico terrestre. Con este propósito utilizamos los siguientes juegos de datos: las series de AAM, estimado siguiendo la definición de Barnes et al.(1983) para 2825 días provientes del National Meteorological Center (NMC) y del European Centre for Medium Range Weather Forecast (ECMWF); y las series de LOD que contienen valores alisados espaciados a intervalos de un día elaborados por el International Earth Rotation Service (IERS). Mostraremos que para los cambios anuales e interanuales en la rotación de la Tierra la influencia atmosférica es asombrosa, mientras que, tanto en las escalas temporales más grandes y como en las más pequeñas, ambas series, geodésica y atmosférica, parecen diverger aún cuando poseemos observaciones obtenidas con las técnicas más modernas al presente.

  15. [Anatomopathological findings during development of diabetic cardiomyopathy in rats].

    PubMed

    Manjarrez-Gutiérrez, Gabriel; Hernández-Chávez, Victor; Neri-Gómez, Teresa; Boyzo-Montes de Oca, Alfonso; Mondragón-Herrera, José Antonio; Hernández-Rodríguez, Jorge

    2014-01-01

    Antecedentes: la miocardiopatía diabética ocurre en ambos tipos de diabetes mellitus y en su patogenia intervienen la hiperglucemia y los cambios metabólicos asociados. Objetivo: caracterizar los diferentes cambios patológicos que aparecen durante la evolución de la miocardiopatía diabética en la rata. Material y métodos: estudio transversal comparativo en dos grupos de ratas diabéticas por la administración de estreptozotocina. A los 14, 21 y 30 días de la administración del tóxico se obtuvieron los corazones, que se colocaron en p-formaldehído al 4%. Se efectuaron cortes de 5 μm y se tiñeron con hematoxilina-eosina, tricrómica de Masson e inmunocitoquímica con anticuerpos anti β-tubulina. Resultados: a los 14 días de la aplicación de la estreptozotocina se observaron en el miocardio sinusoides dilatadas y depósito de colágena entre las fibras de Purkinje e intersticio cardiaco. A los 21 días disminuyó la luz arteriolar por hiperplasia de la capa media. A los 30 días del estudio se hicieron más evidentes los sinusoides cardiacos y los depósitos de colágena y un importante desarreglo del sistema microtubular de los cardiomiocitos. Conclusiones: los sinusoides cardiacos, que representan un patrón vascular fetal y la fibrosis intersticial en el miocardio y el desarreglo microtubular de los cardiomiocitos, apoyan el hecho de que el mecanismo fisiopatológico de la miocardiopatía diabética se inicia en la microcirculación coronaria debido a cambios en el metabolismo cardiaco que contribuyen a la disfunción miocárdica durante el estado diabético.

  16. L'effet Casimir : théorie et expériences

    NASA Astrophysics Data System (ADS)

    Lambrecht, A.; Genet, C.; Intravaia, F.; Reynaud, S.

    2004-11-01

    L'existence de fluctuations irréductibles de champ dans le vide est une prédiction importante de la théorie quantique. Ces fluctuations ont de nombreuses conséquences observables comme l'effet Casimir, qui est maintenant mesuré avec une bonne précision et un bon accord avec la théorie, pourvu que celle-ci tienne compte des différences entre les expériences rélles et la situation idéale considérée par H.G.B. Casimir. Nous présenterons quelqu'unes des expériences récentes et discuterons les principales corrections à la force de Casimir liées à la situation expérimentale.

  17. [One autism, several autisms. Phenotypical variability in autism spectrum disorders].

    PubMed

    Hervas, A

    2016-01-01

    Introduccion. Los trastornos del espectro autista comprenden un grupo heterogeneo de trastornos que se inician en los primeros meses de la vida y que siguen una evolucion cronica. Su origen es biologico, con factores etiologicos complejos que implican diferentes mecanismos geneticos, epigeneticos y ambientales, que interactuan. Objetivo. Revisar los principales factores que varian la presentacion del autismo considerando la evidencia cientifica actual. Desarrollo. Aspectos relacionados con el desarrollo de sintomas, el sexo, la comorbilidad, la edad y la etiologia determinan la variabilidad en la presentacion clinica de los trastornos del espectro autista. Conclusiones. El autismo es altamente heterogeneo y se relaciona fenotipicamente, en parte, con una gran heterogeneidad etiologica, que comienza a descifrarse, pero que todavia permanece desconocida en gran parte. La investigacion etiologica, especialmente en el area de la genetica, permitira identificar diferentes subgrupos homogeneos con sus correspondientes fenotipos y abrir la posibilidad de alternativas terapeuticas futuras.

  18. L'Aventure du LHC

    ScienceCinema

    None

    2016-07-12

    Cette présentation s’adressera principalement aux personnes qui ont construit le LHC. La construction du LHC fut longue et difficile. De nombreux problèmes sont apparus en cours de route. Tous ont été résolus grâce au dévouement et à l’engagement du personnel et des collaborateurs. Je reviendrai sur les coups durs et les réussites qui ont marqués ces 15 dernières années et je vous montrerai combien cette machine, le fruit de vos efforts, est extraordinaire.

  19. Los grandes telescopios ópticos e infrarrojos

    NASA Astrophysics Data System (ADS)

    Rodríguez-Espinosa, J. M.

    Recientemente se han puesto en funcionamiento telescopios de 8 y 10 metros de diámetro de su espejo primario que están significando un gran avance en las capacidades observacionales de la Astronomía moderna. Igualmente en nuestro país se está construyendo el Gran Telescopio de Canarias (GTC) que situará a la Astronomía española en la vanguardia de esta disciplina. En mi charla hablaré de las oportunidades observacionales que suponen estos grandes telescopios para la Astronomía moderna. Hablaré del GTC y del esfuerzo español por ser actores principales del desarrollo de la Astronomía moderna. Por último, mostraré brevemente los proyectos futuros de grandes telescopios que se están proponiendo a ambos lados del Atlántico.

  20. Estudio de la galaxia peculiar NGC 1487

    NASA Astrophysics Data System (ADS)

    Agüero, E. L.; Paolantonio, S.; Gunthardt, G.

    La galaxia peculiar NGC 1487, cuya morfología sugiere un evento de ``merging" o interacción próxima, es estudiada en base a material observacional espectroscópico y fotométrico obtenido en el CASLEO. Mediante técnicas espectrofotométricas standards se determinan las principales características espectrales, los mecanismos de excitación actuantes, las condiciones físicas y las velocidades radiales de las estructuras conspicuas de la galaxia. Por otra parte, usando imágenes directas en las bandas B, V, R e I, se obtienen distribuciones detalladas de los colores B-V, V-R y R-I y detalles de su morfología.

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

    PubMed

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

    2014-01-01

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

  2. Les noyaux actifs de galaxies

    NASA Astrophysics Data System (ADS)

    Camenzind, Max; Boucher, A.

    Découverts il y a plus de 30 ans, les quasars et les radiogalaxies sont des galaxies particulières qui manifestent en leur centre une activité intense. Cet ouvrage se consacre aux principales questions de la physique des noyaux actifs en les illustrant par de récentes données. Y sont traités les domaines suivants: les noyaux des galaxies actives, la théorie des trous noirs en rotation et de leurs disques d'accrétion, l'origine des raies d'émission et les jets des galaxies actives. Fournissant une introduction génerale à la terminologie, cet ouvrage s'adresse aussi bien aux étudiants en astronomie qu'aux astrophysiciens.

  3. La matiere noire dans l'Univers.

    NASA Astrophysics Data System (ADS)

    Mamon, G.

    Parmi les mille questions que l'on peut se poser sur l'Univers, les plus fondamentales concernent son contenu : De quoi est faite la matière de l'Univers ? Est-ce que la matière de l'Univers est principalement constituée d'étoiles, ou bien de gaz interstellaire, de poussières interstellaires, de planètes, petits astéroïdes, ou de trous noirs ? Ou doit-on admettre que l'Univers est composé d'une autre forme de matière que l'on ne connaît pas, qui serait basée sur des particules élémentaires plus exotiques que les protons, neutrons et électrons qui constituent la matière ordinaire, dite baryonique?

  4. Catálogo de mapas de HI en Galaxias y análisis de los datos

    NASA Astrophysics Data System (ADS)

    Martín, M. C.

    Se presenta un catálogo de observaciones de HI en extenso en galaxias, publicadas en las principales revistas hasta 1993. Algunos de los mapas catalogados fueron analizados según simples modelos de distribución gausiana, con el objeto de conseguir un valor aproximado de la extensión real del gas. Así se ha encontrado que dicha extensión se relaciona con el tamaño óptico de la galaxia, y se ha obtenido una expresión numérica que permite estimar ``a priori" la dimensión de la componente gaseosa dentro de una galaxia, conociendo la emisión global del gas obtenida en una observación simple, y su dimensión óptica.

  5. Resonancias en la región trans-neptuniana

    NASA Astrophysics Data System (ADS)

    Gallardo, T.; Ferraz-Mello, S.

    La expansión de la órbita del planeta Neptuno en la etapa de acreción del Sistema Solar exterior (Fernández e Ip 1984, 1996) parece ser un mecanismo eficiente para la captura de planetesimales en las resonancias exteriores con Neptuno (Malhotra 1995). Por otro lado, los estudios dinámicos realizados por varios autores indican que las resonancias son regiones de evolución estable, en contraste con el comportamiento caótico del resto de la región trans-neptuniana. Por estas razones, y si bien los datos observacionales son todavía muy limitados, se supone que los objetos descubiertos se encuentran en alguna de esas resonancias. En esta comunicación presentamos un estudio analítico y numérico de las principales resonancias exteriores con Neptuno.

  6. Systeme Optique de Transformations de Coordonnees et Son Utilisation EN Reconnaissance de Formes

    NASA Astrophysics Data System (ADS)

    Asselin, Daniel

    La foramtion optique des transformations de coordonnees (TC) polaire et log-polaire a un grand potentiel en reconnaissance invariante sous rotation et changement d'echelle en temps reel. Cependant, jusqu'ici, la faible qualite des transformations obtenues et le probleme d'enroulement ont empeche toute utilisation pratique. A l'aide d'hologrammes a facettes generes par ordinateur, nous etudierons donc la generation optique de TC de qualite en utilisant des facettes de tailles variables tandis que, en juxtaposant deux TC, nous reduirons de facon appreciable l'effet d'enroulement. Suite a ces ameliorations, nos experiences demontreront la possibilite d'une reconnaissance invariante en rotation et en echelle d'objets simples, seule l'etape de la classification etant supportee numeriquement. Nous etudierons egalement les effets, sur l'onde reconstruite, de la resolution limitee du modulateur supportant l'hologramme, les principales conclusions ayant ete experimentalement confirmees.

  7. Fenómenos solares que afectan la atmósfera terrestre

    NASA Astrophysics Data System (ADS)

    Rovira, M.

    Se describen los principales fenómenos solares como fulguraciones, prominencias eruptivas, viento solar y eyecciones de masa coronal (CME) que tienen consecuencias en la atmósfera terrestre. En algunos casos el material es eyectado a velocidades superiores a los 900 km/seg y tarda menos de 48 horas en llegar a la Tierra. En general, estos CME no son peligrosos ya que el campo magnético terrestre actúa como protector siendo un aislante efectivo. Si el viento solar es muy intenso puede comprimir la magnetósfera y producir una tormenta geomagnética. En casos extremos, puede interferir la transmisión de potencia eléctrica, perturbar los satélites y producir auroras polares.

  8. Que peut-on voir avec des neutrons? Une introduction pour des non spécialistes

    NASA Astrophysics Data System (ADS)

    Schweizer, J.

    2005-11-01

    Le neutron est une particule élémentaire qui a été découverte en 1932 par James Chadwick. Ses caractéristiques principales sont résumées dans le tableau I. Il a été utilisé pour la première fois par Clifford Shull en 1946 comme outil pour des expériences de diffusion. Cette technique s'est depuis constamment développée pour concerner tous les aspects de la matière condensée: physique, chimie, matériaux, biologie. Il s'agit d'un outil tout à fait exceptionnel car le neutron possède des propriétés uniques et particulièrement adaptées pour ces études.

  9. Une cause rare du choc septique chez le diabétique: la cystite emphysémateuse compliquée d'une rupture vésicale

    PubMed Central

    Shimi, Abdelkarim; Boumedian, Abderrahman; Elbakouri, Nabil; Derkaoui, Ali; Khatouf, Mohammed

    2015-01-01

    La cystite emphysémateuse est une affection rare rencontrée principalement chez les patients diabétiques mal équilibrés. Elle se caractérise par la présence de l'air dans la paroi et/ou la lumière vesicale. La tomodensitométrie abdomino-pelvienne reste l'examen clé pour confirmer le diagnostic. Nous rapportons l'observation d'une patiente diabétique ayant présentée une cystite emphysémateuse favorisée par un diabète déséquilibré et compliquée d'une rupture vésicale intrapéritonéale avec évolution défavorable. PMID:26301019

  10. [Update on post-stroke depression: posing new challenges in patients with a minor stroke or transient ischaemic attack].

    PubMed

    Carnes-Vendrell, A; Deus-Yela, J; Molina-Seguin, J; Pifarre-Paredero, J; Purroy, F

    2016-05-16

    Introduccion. El ictus es una de las principales causas de discapacidad en la poblacion adulta. El desarrollo de sintomas depresivos es la complicacion afectiva mas frecuente. Hasta ahora, en la mayoria de los estudios sobre depresion postictus se ha excluido a los pacientes que han sufrido un ictus minor o un ataque isquemico transitorio (AIT), si bien es un subgrupo igualmente vulnerable a esta enfermedad. Objetivo. Revisar los estudios publicados de depresion postictus para dilucidar los aspectos que ya se han demostrado ampliamente y los que necesitan mayor evidencia. Desarrollo. La depresion postictus es frecuente tanto en los pacientes con ictus establecido como en los pacientes con ictus minor o AIT. Aunque existen discrepancias en la definicion utilizada, aproximadamente uno de cada tres pacientes desarrollara esta complicacion. Se han identificado factores de riesgo de depresion postictus con un amplio respaldo cientifico (sexo femenino, antecedentes de depresion u otros trastornos psiquiatricos, gravedad del ictus y afectacion funcional) y otros sin el (calidad de vida, deterioro cognitivo y biomarcadores de neuroimagen). Las principales limitaciones metodologicas halladas son la confusion entre depresion postictus y sintomatologia depresiva, la variabilidad en las escalas de evaluacion usadas y la variabilidad en el momento temporal de la evaluacion del estado de animo. Hasta ahora son muy pocos los estudios en el ictus minor o el AIT. Conclusiones. Se necesitan nuevos estudios con mejor diseño que ayuden a establecer el riesgo de depresion postictus a diferentes tiempos tras el ictus, el ictus minor o el AIT, y establecer la importancia de los factores descritos previamente.

  11. Barreras y Facilitadores en el Reclutamiento y la Retención de Parejas Heterosexuales en Intervenciones Preventivas en VIH/SIDA

    PubMed Central

    Hernández-Hernández, Alberto L.; Perez-Jimenez, David

    2012-01-01

    Compendio El Reclutamiento y la Retención (R&R) de participantes es fundamental para el éxito de estudios y para el desarrollo de intervenciones preventivas. El R&R de participantes determina la validez y efectividad de estos programas. En este trabajo examinamos algunos de los factores que facilitan y dificultan el R&R en los proyectos preventivos y ofrecemos algunas alternativas para mejorar los índices de R&R. Realizamos dos estudios, en el primero administramos el Instrumento de Informatión, Motivatión y Conductas-Español (IIMC-E) a un grupo de 26 parejas heterosexuales (52 participantes). En el segundo, entrevistamos a 5 parejas VIH discordantes (10 participantes). Encontramos que el 75% de los/las participantes indicó que su trabajo era una de las principales barreras que dificultan la asistencia a las actividades. Otras barreras son las responsabilidades laborales y familiares. Encontramos que la principal barrera fue el miedo a la revelación del estado serlógico. Los principales facilitadores del R&R son la coordinación adecuada y el seguimiento telefónico ofrecido por parte del personal del proyecto. Concluimos que en el desarrollo e implantación de programas de prevención el investigador/a debe tomar en cuenta la adaptación de aspectos logísticos como la disponibilidad y las necesidades particulares de los/las participantes. PMID:23264700

  12. Dinámica de pulsares jóvenes

    NASA Astrophysics Data System (ADS)

    Allen, M. P.; Horvath, J. E.

    La observación detallada de los pulsos en varios pulsares jóvenes (τ < 105 yr) permitió detectar varios aumentos en la frecuencia de emisión gliches con cambios permanentes en Δ {˙ Ω} / {˙ Ω}. A través de las ecuaciones de movimiento se investiga, utilizando parametrizaciones simples, la hipótesis de que el ángulo entre Ω y el dipolo magnético M sea responsable de ese comportamiento. Se derivan curvas analíticas para la evolución de Ω (t) y se estudia la posibilidad de describir un conjunto de observables (incluyendo el braking index n) con estos modelos.

  13. INCLUSIÓN DE LA ÉTICA Y BIOÉTICA EN LA FORMACIÓN DE PRE Y POSGRADO DEL CIRUJANO-DENTISTA EN PERÚ

    PubMed Central

    Rupaya, Carmen Rosa García

    2009-01-01

    Se revisan aspectos de la inclusión de la ética y bioética en la formación de pre y posgrado del cirujano-dentista en Perú. Desde el punto de vista de la formación del docente, se analiza la presencia de normatividad ética en la investigación científica que genera la universidad, así como los conocimientos y actitudes vinculados con la ética y bioética en la formación del odontólogo. Se concluye que es un compromiso fomentar un cambio de paradigma, a través de un movimiento masivo que involucre los ámbitos familiar, profesional y académico, con el n de integrar la reflexión ética en nuestro diario proceder. PMID:19946384

  14. Menopausal Symptom Experience of Hispanic Midlife Women in the U.S.

    PubMed Central

    Im, Eun-Ok; Lim, Hyun-Ju; Lee, Seung Hee; Dormire, Sharon; Chee, Wonshik; Kresta, Kimberly

    2009-01-01

    Using a feminist approach, we examined the menopausal symptom experience of Hispanic midlife women in the U.S. This was a qualitative online forum study among 27 Hispanic midlife women in the U.S. Seven topics related to menopausal symptom experience were used to administer the 6-month online forum. The data were analyzed using thematic analysis. Four themes were identified: (a) “Cambio de vida (change of life),” (b) “being silent about menopause,” (c) “trying to be optimistic,” and (d) “getting support.” More in-depth studies with diverse groups of Hispanic women are needed while considering family as a contextual factor. PMID:19742365

  15. Defining the Impact of Non-Native Species

    PubMed Central

    Jeschke, Jonathan M; Bacher, Sven; Blackburn, Tim M; Dick, Jaimie T A; Essl, Franz; Evans, Thomas; Gaertner, Mirijam; Hulme, Philip E; Kühn, Ingolf; Mrugała, Agata; Pergl, Jan; Pyšek, Petr; Rabitsch, Wolfgang; Ricciardi, Anthony; Richardson, David M; Sendek, Agnieszka; VilÀ, Montserrat; Winter, Marten; Kumschick, Sabrina

    2014-01-01

    Non-native species cause changes in the ecosystems to which they are introduced. These changes, or some of them, are usually termed impacts; they can be manifold and potentially damaging to ecosystems and biodiversity. However, the impacts of most non-native species are poorly understood, and a synthesis of available information is being hindered because authors often do not clearly define impact. We argue that explicitly defining the impact of non-native species will promote progress toward a better understanding of the implications of changes to biodiversity and ecosystems caused by non-native species; help disentangle which aspects of scientific debates about non-native species are due to disparate definitions and which represent true scientific discord; and improve communication between scientists from different research disciplines and between scientists, managers, and policy makers. For these reasons and based on examples from the literature, we devised seven key questions that fall into 4 categories: directionality, classification and measurement, ecological or socio-economic changes, and scale. These questions should help in formulating clear and practical definitions of impact to suit specific scientific, stakeholder, or legislative contexts. Definiendo el Impacto de las Especies No-Nativas Resumen Las especies no-nativas pueden causar cambios en los ecosistemas donde son introducidas. Estos cambios, o algunos de ellos, usualmente se denominan como impactos; estos pueden ser variados y potencialmente dañinos para los ecosistemas y la biodiversidad. Sin embargo, los impactos de la mayoría de las especies no-nativas están pobremente entendidos y una síntesis de información disponible se ve obstaculizada porque los autores continuamente no definen claramente impacto. Discutimos que definir explícitamente el impacto de las especies no-nativas promoverá el progreso hacia un mejor entendimiento de las implicaciones de los cambios a la biodiversidad y los

  16. Lipid profile response to weight loss program in overweight and obese patient is related with gender and age.

    PubMed

    Romero-Moraleda, Blanca; Peinado Lozano, Ana Belén; Morencos Martínez, Esther; López-Plaza, Bricia; Gómez Candela, Carmen; Calderón Montero, Francisco Javier

    2015-06-01

    Introducción: el riesgo de desarrollar una enfermedad cardiovascular (ECV) se incrementa con la edad; sin embargo, el riesgo de ECV en edad fértil es mayor en hombres que en mujeres. Son pocas las intervenciones en las que se comparan las diferencias entre hombres y mujeres que un programa de pérdida de peso tiene sobre el perfil lipídico. Objetivo: comprobar el cambio en el perfil lipídico entre hombres y mujeres tras un programa de pérdida de peso, comparando las diferencias por género y categoría de edad. Métodos: ciento ochenta participantes (96 mujeres y 84 hombres) con sobrepeso y obesidad (IMC 25–34.9 kg/m2) con edades comprendidas entre los 18-50 años fueron repartidos de forma aleatoria en los diferentes grupos de intervención. El período de intervención fue de 22 semanas y 2 semanas para la evaluación pre y post. Todos los sujetos siguieron una dieta equilibrada hipocalórica (25- 30% de restricción calórica) y un programa de ejercicio 3 veces/semana. Antes y después de la intervención todos los grupos fueron evaluados de los cambios en el perfil lipídico, la composición corporal y la ingesta diaria. Resultados: hubo diferencias significativas en el cambio de HDL entre hombres y mujeres (p = 0,001). Mientras que en las mujeres disminuyó (HDL: -2,94%, p = 0,02), en los hombres hubo un aumento de la concentración de HDL (HDL: 5% p = 0,02). Después de la intervención los hombres lograron disminuir significativamente el LDL un 6,65% más que las mujeres (p = 0,01). Para concentraciones de TG hubo diferencias significativas entre hombres y mujeres al inicio de la intervención; sin embargo, solo los hombres tuvieron una mejoría significativa tras la intervención (p = 0,001). El TC mostró diferencias significativas entre hombres y mujeres preintervención (p = 0,013). Tras la intervención, los hombres y las mujeres mostraron una significativa disminución de TC (p = 0,01). Conclusión: los hombres obtuvieron un cambio m

  17. Independent and combined influence of the FTO rs9939609 and MC4Rrs17782313 polymorphisms on hypocaloric diet induced changes in body mass and composition and energy metabolism in non-morbid obese premenopausal women.

    PubMed

    Labayen, Idoia; Margareto, Javier; Maldonado-Martin, Sara; Gorostegi, Ilargi; Illera, Maitane; Medrano, María; Barrenechea, Lurdes; Larrarte, Eider

    2015-05-01

    Objetivo: Examinar la influencia individual y combinada de los polimorfismos genéticos FTO rs9939609 y MC4R rs17782313 en los cambios en la masa grasa (MG), gasto energético en reposo (GER), leptina y tirotropina (TSH) tras una intervención de 12 semanas de duración con dieta hipocalórica en mujeres pre-menopáusicas con obesidad no mórbida. Métodos: Se evaluaron al inicio y al final de la intervención la MG (absorciometría dual de rayos X), el GER (calorimetría indirecta) y los niveles de leptina y TSH en sangre en 77 mujeres (edad: 36.8±7.0 años) obesas (IMC: 33.9±2.8kg/m2). Resultados: No se observaron diferencias estadísticamente significativas (Ps>0.1) entre las portadores y las no portadoras del alelo A del FTOrs9939609 (TT vs. portadores del alelo) en los cambios en la masa corporal (-8.6±3.2% vs. -8.7±3.3 %), MG (12.8±4.7% vs. –12.9±6.3%), GER (-11.3±4.7 vs. -9.4±8.1%), leptina (-34.1±25.1% vs. -43.5±24.1%) y TSH (5.2±34.5% vs. -1.7±27.1%). Tampoco se observaron diferencias estadísticamente significativas en los cambios en la masa corporal (-8.6±3.6% vs. -8.9±2.6%), MG (-12.7±6.1% vs. -13.4±5.3%), GER (-9.8±7.4% -9.4±9.4%), leptina (-39.0±26.9% vs. -44.8±18.4%) y TSH (-1.0±30.0% vs. 1.5±26.5%) entre las participantes portadoras y no portadoras del alelo C del MC4Rrs17782313 (Ps>0.3). Finalmente, no se encontraron diferencias estadísticamente significativas en los cambios en la masa y composición corporal, el GER, o los niveles de leptina y TSH entre mujeres no portadoras de alelos de riesgo, portadoras del alelo C del MC4Rrs17782313, portadoras del alelo A del FTOrs9939609 y portadoras de los dos alelos de riesgo (A y C) al final de las 12 semanas de intervención con dieta hipocalórica (Ps>0.1). Conclusión: Ser portador del alelo de riesgo A del FTOrs9939609 y/o del alelo de riesgo C del MC4Rrs17782313 no influye en la pérdida de masa grasa o en el descenso del GER en mujeres obesas tras 12 semanas de intervenci

  18. [In Process Citation].

    PubMed

    López Siguero, Juan Pedro

    2016-01-01

    La prevalencia de obesidad y de diabetes tipo 2 ha aumentado enormemente en las últimas décadas hasta convertirse en una epidemia amenazante. El listado de factores de riesgo es amplio, pero lo encabeza el cambio del estilo de vida (alimentación y actividad física) que constituye, además, la herramienta preventiva más importante. El trabajo de Caravalí-Meza y cols. en este número de la revista hace hincapié en el consumo de bebidas azucaradas y su relación con la obesidad. Sus autores concluyen que el consumo de azúcares refinados de las bebidas en adolescentes mexicanos, conlleva un riesgo de incremento del perímetro de la cintura y, en el caso de mantenerse, también del índice de masa corporal. PMID:27238772

  19. [In Process Citation].

    PubMed

    López Siguero, Juan Pedro

    2016-03-25

    La prevalencia de obesidad y de diabetes tipo 2 ha aumentado enormemente en las últimas décadas hasta convertirse en una epidemia amenazante. El listado de factores de riesgo es amplio, pero lo encabeza el cambio del estilo de vida (alimentación y actividad física) que constituye, además, la herramienta preventiva más importante. El trabajo de Caravalí-Meza y cols. en este número de la revista hace hincapié en el consumo de bebidas azucaradas y su relación con la obesidad. Sus autores concluyen que el consumo de azúcares refinados de las bebidas en adolescentes mexicanos, conlleva un riesgo de incremento del perímetro de la cintura y, en el caso de mantenerse, también del índice de masa corporal.

  20. Once a Navegante, Always a Navegante: Latino Men Sustain Their Roles as Lay Health Advisors to Promote General and Sexual Health to Their Social Network.

    PubMed

    Sun, Christina J; Mann, Lilli; Eng, Eugenia; Downs, Mario; Rhodes, Scott D

    2015-10-01

    Little is known about the sustainability of male- and men's health-focused lay health advisors. HoMBReS Por un Cambio was a community-level social network intervention designed to improve sexual health among Latino men who were members of soccer teams. During the year after the intervention implementation, lay health advisors (Navegantes) continued to promote sexual health; over 84% (16 of the 19) Navegantes conducted 9 of 10 primary health promotion activities. Describing where to get condoms was the activity that the most Navegantes reported having conducted. Navegantes had broad reach with their social networks, although the number of Navegantes that conducted each activity differed across the categories of social network members (soccer teammates, nonteammates, and women). Results suggest that HIV-related health disparities may be addressed through lay health advisor interventions because they are sustained after the intervention ends and reach large numbers of community members.

  1. [Nilotinib in patients with chronic myeloid leukemia without response to imatinib].

    PubMed

    Báez-de la Fuente, Enrique; Arellano-Severiano, Baltazar

    2014-01-01

    INTRODUCCIÓN: la resistencia e intolerancia al imatinib en pacientes con leucemia mieloide crónica requiere el uso de otros fármacos, como el nilotinib. El objetivo de este informe es presentar los resultados obtenidos en un grupo de pacientes con leucemia mieloide crónica que recibió tratamiento de segunda línea con nilotinib. MÉTODOS: se incluyeron 16 pacientes con diagnóstico de leucemia mieloide crónica que recibieron tratamiento de segunda línea con nilotinib, después de que no respondieron adecuadamente al imatinib. El cambio de fármaco se debió a intolerancia, resistencia o progresión de la leucemia.

  2. [Effects of a multidisciplinary program on morbid obese patients and patients with comorbility who are likely to be candidates for bariatric surgery].

    PubMed

    Delgado Floody, Pedro; Caamaño Navarrete, Felipe; Jerez Mayorga, Daniel; Campos Jara, Christian; Ramírez Campillo, Rodrigo; Osorio Poblete, Aldo; Alarcón Hormazábal, Manuel; Thuillier Lepeley, Nicole; Saldivia Mansilla, Claudia

    2015-05-01

    Introducción: La obesidad morbida es una enfermedad que debe ser tratada de forma integral (i.e., multi/ interdisciplinar). Para esta condicion la cirugia bariatrica es efectiva y segura en el tratamiento, sin embargo, a mayor peso preoperatorio podria aumentar la morbimortalidad. Objetivo: El objetivo del estudio es determinar los efectos de un programa de tratamiento interdisciplinar sobre parametros metabolicos, antropometricos y la condicion fisica en candidatos a cirugia bariatrica. Material y métodos: Un hombre y nueve mujeres con un promedio de 42,5 anos de edad con obesidad morbida (n = 3) u obesidad y comorbilidades (diabetes mellitus tipo II, hipertension arterial, dislipidemia, resistencia a la insulina) (n=7) candidatos a cirugia bariatrica, fueron sometidos a ejercicio fisico, apoyo psicologico y educacion nutricional, tres veces por semana durante tres meses. Antes y 72 horas despues de la ultima sesion de intervencion se evaluo (en ayuno ≥12 horas): masa corporal, porcentaje de masa grasa, IMC, perimetro de cintura, condicion fisica, glicemia, colesterol total, colesterol HDL, colesterol LDL y trigliceridos. Resultados: Posterior a la intervencion la masa corporal (p=0,004), el IMC (p=0,002), el porcentaje de masa grasa (p=0,047) y la condicion fisica (p=0,000) presentaron cambios significativos. Las demas variables dependientes no presentaron cambios significativos, aunque tendieron a disminuir. Conclusiones: Una intervencion integral de frecuencia moderada y corta duracion (i.e., tres sesiones/semana durante tres meses) permitiria reducir significativamente el peso y la grasa corporal, ademas de mejorar considerablemente la condicion fisica en candidatos a cirugia bariatrica. Una mayor duracion y/o frecuencia de intervencion podria ser necesaria para modificar significativamente variables plasmaticas.

  3. [Sleep deprivation effects on cognitive, psychomotor skills and its relationship with personal characteristics of resident doctors].

    PubMed

    Hamui-Sutton, Liz; Barragán-Pérez, Virginia; Fuentes-García, Ruth; Monsalvo-Obregón, Erika Cristina; Fouilloux-Morales, Claudia

    2013-01-01

    Antecedentes: en países como Estados Unidos y las naciones europeas se han propuesto cambios a la estructura asistencial y académica de los médicos especialistas en formación que proponen transformaciones a las normas relativas al número de horas que trabajan a la semana los residentes. El argumento principal que sustenta esas transformaciones se basa en el supuesto de que las horas de trabajo excesivas (más de 16 horas ininterrumpidas) provocan alteraciones cognitivas y psicomotrices en los residentes. Objetivo: evaluar la asociación entre la privación de sueño y las habilidades cognitivas y psicomotoras de una muestra de residentes de diferentes especialidades médicas. Material y métodos: estudio longitudinal, con mediciones pre y post guardia, en 31 residentes de Medicina. Se midieron las variables de: habilidades cognitivas y psicomotoras, datos sociodemográficos y de condiciones de guardia, calidad de sueño y psicopatología. resultados: 81% de los residentes tuvo detrimento en, al menos, una de las pruebas realizadas; sin embargo, en los resultados de las habilidades psicomotoras y en la maniobra de reanimación cardiopulmonar básica se encontró una diferencia significativa en los momentos pre y post guardia con mejoría en las puntuaciones. Conclusiones: la privación de sueño disminuye las habilidades cognitivas y psicomotoras. Si bien nuestros resultados no son generalizables, pueden constituir un precedente para fundamentar posibles cambios referentes a las guardias en las residencias médicas.

  4. El espectro de KX TrA entre 1990 y 1996

    NASA Astrophysics Data System (ADS)

    Brandi, E.; García, L.; Ferrer, O.; Barbá, R.

    La estrella simbiótica KX TrA = He2-177 fue observada espectroscópicamente con el telescopio de 2.15 m del CASLEO entre los años 1990 y 1996, utilizándose resoluciones intermedia y alta. El rango espectral estudiado se extiende desde 4400 Åa 7200 Å. La historia fotométrica de KX TrA presenta explosiones del mismo tipo que las mostradas por la nova lenta RR Tel y su espectro de alta excitación, muy rico en líneas de emisión, es también similar al de RR Tel. Por lo tanto, es importante analizar la evolución espectral de KX TrA en el tiempo, prestando especial atención a los posibles cambios en los niveles de excitación. Las emisiones presentes corresponden a transiciones permitidas y prohibidas con un amplio rango de ionización, incluyéndose las anchas e intensas líneas originadas por scattering Raman de O VI en λλ 6825 y 7082 Å. En el período cubierto por nuestras observaciones se estudia la variación de la intensidad relativa de las emisiones, el comportamiento de las velocidades radiales y los cambios de perfiles de las líneas, especialmente en Hα y Hβ. El contínuo de la región roja observada indica un tipo espectral no más tardío que M3 para la componente gigante fría del sistema.

  5. Alfabetización astronómica

    NASA Astrophysics Data System (ADS)

    Tignanelli, H.

    A fines de 1991, en una revista de educación en ciencias, José L. Sérsic reflexionaba acerca de los problemas que enfrentaría la enseñanza de los conocimientos astronómicos en nuestro país, en los umbrales del Siglo XXI. Entonces postulaba como un objetivo mínimo, que los jóvenes deberían mostrar signos claros de que se hallan astronómicamente alfabetizados. Era el año en que se realizaba por primera vez una Asamblea General de I.A.U. en Buenos Aires, una oportunidad de singulares características para la comunidad astronómica local y, simultáneamente el comienzo de un cambio radical en la estructura del sistema educativo argentino. ?`Contempla ese cambio el objetivo que postulara Sérsic? ?`Estamos en condiciones de afirmar que estamos en camino de lograrlo? ?`Con qué parámetros?. Presentamos aquí un panorama general sobre algunas de las acciones realizadas en función de alcanzar esa alfabetización científica, analizando exclusivamente la actividad de enseñanza hasta el nivel universitario, sin detenernos en el mismo, ya que lo consideramos una instancia superior e independiente de aquella alfabetización. Tampoco nos referiremos a la tarea de difusión, divulgación o popularización de la Astronomía, ya que su condición de asistemática y subjetiva no es evaluable en términos de la formación integral de un individuo.

  6. [Association of intake macro and micronutrients with life quality of life in elderly].

    PubMed

    Durán Agüero, Samuel; González Cañete, Natalia; Peña D'Ardaillon, Francisca; Candia Johns, Priscila

    2015-06-01

    Introducción: la relación entre calidad de vida y nutrientes está cobrando una singular importancia en este grupo etario. Objetivo: asociar la ingesta de macro y micronutrientes con la calidad de vida de AM autónomos chilenos. Material y métodos: se evaluaron 1.704 adultos mayores (AM) autónomos, de ambos sexos, a quienes se les valoró la calidad de vida a través de la encuesta de Estilo de Vida y Promotor de Salud y de una encuesta sobre Tendencia de Consumo. Resultados: el 63,9% de los AM presentaba sobrepeso/ obesidad al realizar correlaciones entre calidad de vida y nutrientes; la vitamina A se asoció a mejor manejo de el estrés (r = 0,166; p = 0,001), responsabilidad en salud (0,171;p = 0,001) y ejercicio (r = 0,167; p = 0,001); la vitamina B12 es un factor protector a la hora de tener una buena calidad de vida OR = 0,78 (IC95% 0,67-0,90), en cambio el consumo de bebidas cola OR = 1,92 (IC95% 1,42-2,60), el sobrepeso OR = 1,77(IC95% 1,02-3,06) y ser de sexo masculino OR = 1,62 (IC95%1,27-2,07) son factores de riesgo para la calidad de vida. Conclusiones: la ingesta de vitamina A y vitamina B12 son factores protectores para tener una mejor calidad de vida; en cambio, tener sexo masculino, consumir bebidas cola y el sobrepeso son factores de riesgo para la calidad de vida en adultos mayores autónomos.

  7. [Diet and polymer standard vs. standard in the nutritional status of elderly patients with fragility].

    PubMed

    Luna-Ramos, Gissel Karelly; Pedraza-Zárate, Miguel Ángel; Franco-Álvarez, Nubia; González-Velázquez, Felipe

    2016-01-01

    Introducción: los pacientes geriátricos con fragilidad evidencian diferentes cambios fisiológicos, por lo que les son indicadas dietas poliméricas para mantener y/o modificar su estado nutricio. El objetivo de este artículo es demostrar el efecto al cambiar de una dieta estándar y polimérica a una dieta estándar en el estado nutricio en el paciente geriátrico con fragilidad. Métodos: ensayo clínico controlado aleatorizado en 23 pacientes geriátricos, de 70 años de edad o más, con fragilidad, en un periodo comprendido de julio a diciembre de 2014. Se determinó estado nutricional mediante la Mini Nutritional Asssessment y el índice de masa corporal. Análisis estadístico descriptivo, Chi cuadrada, t de Student y McNemar. Resultados: en el G1: fueron 12 pacientes y en el G2 11, se constató un cambio positivo en el G1 en el estado nutricional, siendo inicialmente de 14.00 (malnutrición) y al final de 22.75 (riesgo de desnutrición). De acuerdo al IMC (kg/m2) se evidenció al inicio, al 25 % de pacientes con desnutrición leve, pero los resultados finales arrojan cifras con un porcentaje nulo de pacientes desnutridos. Conclusiones: el consumo de dieta estándar y polimérica incrementa el peso corporal, IMC y el estado nutricio en pacientes geriátricos con fragilidad.

  8. [Sexual dysfunction in migraine patients who receive preventive treatment: identification by means of two screening tests].

    PubMed

    Domínguez, Elena; Ruiz, Lara; Hernández, Marta S; Muñoz, Irene; Ruiz-Piñero, Marina; Uribe, Fernando; Guerrero-Peral, Ángel L; Toribio-Díaz, M Elena

    2015-01-01

    Introduccion. Las disfunciones sexuales constituyen uno de los problemas mas importantes que afectan a la salud sexual y se asocian a bajos niveles de calidad de vida. Objetivo. Evaluar la funcion sexual en pacientes migrañosos y la disfuncion sexual atribuible al tratamiento preventivo. Pacientes y metodos. Pacientes atendidos en las consultas de cefaleas de dos hospitales generales que acudian a la primera visita tras prescripcion de un preventivo. Respondieron al cuestionario de funcionamiento sexual del Hospital General de Massachusetts (MGH-SFQ) y al cuestionario de disfuncion sexual secundaria a psicofarmacos (SALSEX). Resultados. Muestra de 79 pacientes (17 varones, 62 mujeres), de 37,6 ± 9,1 años (rango: 19-57 años), 31 (39,2%) de ellos con migraña cronica. Como tratamiento preventivo, 23 (29,1%) recibian betabloqueantes; 42 (53,2%), neuromoduladores; 8 (10,1%), antagonistas del calcio, y 6 (7,6%), antidepresivos. El MGH-SFQ detecto en 24 pacientes (30,4%) disminucion al menos moderada de satisfaccion sexual global. El SALSEX mostro cambio de la funcion sexual atribuible al tratamiento preventivo en 36 casos (45,5%), solo excepcionalmente manifestada de forma espontanea. En pacientes con disfuncion al menos moderada en el MGH-SFQ, eran significativamente mayores la edad media en el momento de la inclusion, el numero de dias de dolor al mes y el uso excesivo de medicacion sintomatica (53,3% frente a 46,7%; p = 0,03). Conclusion. La disfuncion sexual evaluada con sencillos test de cribado detecta con frecuencia disfuncion sexual en pacientes migrañosos en tratamiento preventivo y cambios en su vida sexual atribuibles a estos farmacos.

  9. The effectiveness of intervention programs in the prevention and control of obesity in infants: a systematic review.

    PubMed

    Pitangueira, Jacqueline Costa Dias; Rodrigues Silva, Luciana; Costa, Priscila Ribas de Farias

    2015-04-01

    Objetivo: Este trabajo pretende realizar una revisión de literatura para evaluar la efectividad de programas de intervención en la prevención y en el control del exceso de peso infantil y hacer el mapeamiento de los sitios donde los estudios fueron hechos. Métodos: Estudio de revisión sistemática utilizando las bases de datos de PUBMED/MEDLINE y LILACS para rastrear la literatura publicada sobre programas de intervenciones para prevención y control de exceso de peso entre el período de enero de 2004 a octubre de 2013. La búsqueda inicial fue realizada utilizando los términos “body mass index” and “Intervention” and “children” or “adolescent” y fueron seleccionados apenas los artículos publicados en Inglés, español y portugués. Resultados: se observó que intervenciones pautadas unicamente en el aconsejamiento presentaron resultados modestos para identificar alteraciones en los indicadores antropométricos de niños y adolescentes a lo largo del tiempo, aunque parezcan ser efectivos para realizar cambios positivos en los hábitos alimentares de esa población. Entre los estudios identificados, 77.8% fueron realizados en países con renta alta, 22.2% en los países con renta media-alta y no hay estudios de intervención en países con renta media-baja y baja. Conclusión: Los programas de intervenciones basados solamente en el aconsejamiento son efectivos para promover cambios en la calidad alimentar, pero presentan insignificantes resultados en la alteración de los parámetros antropométricos de niños y adolescentes.

  10. [Effect of partial and generalised epileptic seizures on sleep architecture in rats].

    PubMed

    López-Ruiz, Edith; Vega-Flores, Germán; Contreras-Cisneros, Bernardo; Martínez, Adrián; Rivera-García, Ana P

    2015-04-01

    Introduccion. La alteracion del sueño producido por las crisis epilepticas se conoce; sin embargo, aun se tiene poca informacion de la alteracion en el sueño por el tipo de crisis epileptica. Materiales y metodos. Se evaluo la arquitectura del sueño de ratas en registros polisomnograficos de 36 horas tras inducirles crisis epilepticas parciales y generalizadas. Para la induccion de las crisis epilepticas se aplicaron in situ 50-100 UI de penicilina G sodica en la amigdala del lobulo temporal. Resultados. Las crisis parciales y generalizadas provocaron el aumento en la latencia del sueño de ondas lentas (SOL) y sueño de movimiento oculares rapidos (MOR). El numero de episodios de las fases de vigilia, SOL y sueño MOR disminuyo y la duracion media de los episodios de la vigilia y del SOL aumento, mientras que la del sueño MOR disminuyo. El porcentaje total del sueño MOR disminuyo significativamente. Durante el primer periodo de luz, las crisis parciales y generalizadas provocaron el incremento de la vigilia y la reduccion de las fases del SOL y sueño MOR. En el periodo de oscuridad, aumento el SOL, disminuyo la vigilia y no hubo cambios en el sueño MOR. En el segundo periodo de luz los porcentajes de las fases de vigilia y SOL regresaron a los valores control y el porcentaje del sueño MOR continuo disminuido. Conclusion. Los cambios en la organizacion del sueño dependen del tipo de crisis epileptica que se presenta. Las crisis epilepticas generalizadas provocaron mayor deterioro en el sueño MOR.

  11. EFFECTS OF AN INTERVENTION PROGRAM (HHP) ON THE PROMOTION OF HEALTHY HABITS IN EARLY ADOLESCENCE.

    PubMed

    Nebot Paradells, Vicente; Pablos Monzó, Ana; Elvira Macagno, Laura; Guzmán Luján, José Francisco; Pablos Abella, Carlos

    2015-12-01

    Introducción: la vigilancia y promoción de los hábitos de vida saludables en la primera adolescencia resulta vital, por ser una etapa de cambios y configuración de futuros hábitos de vida. Metodologia: se realizaron dos estudios en niños entre 10-12 años de edad. El primero sobre la fiabilidad del Inventario de Hábitos Saludables (IHS) (N = 134), y el segundo de diseño cuasi-experimental (N = 158), para el estudio pre-post de los efectos del Programa de Hábitos Saludables (PHS). Los hábitos se midieron con el IHS; el grupo de intervención (GI) (n = 90) participó en el PHS durante 8 meses, y el (GC) (n = 100). Resultados: el IHS obtuvo una buena fiabilidad, siendo el índice de correlación interclase (rango .506 - 884; p < 0,001) y el coeficiente de correlación de Spearman (rango r = 529 - 884; p < .001). Respecto al PHS, no existieron diferencias de alimentación previas (p = 0,564), pero sí al final del mismo (p = 0,001), a favor del GI. Del resto de indicadores de hábitos saludables, el GC tenía mejores hábitos iniciales (p = 0,047), pero el GI mejoró su puntuación, no existiendo diferencias finales entre grupos. Conclusiones: el IHS resultó ser un cuestionario adaptado y fiable para el estudio de los hábitos en adolescentes. El PHS provocó cambios en el GI, consiguiendo mejores puntuaciones en alimentación y sumatorio de hábitos saludables.

  12. [Fingolimod: effectiveness and safety in routine clinical practice. An observational, retrospective, multi-centre study in Navarra, Gipuzkoa and La Rioja].

    PubMed

    Ayuso, T; Marzo-Sola, M E; Castillo-Trivino, T; Soriano, G; Otano, M A; Lopez, M A; Croitoru, I M; Olascoaga, J

    2016-09-01

    Objetivo. Evaluar la efectividad y seguridad del fingolimod en la practica clinica en las regiones de Navarra, Gipuzkoa y La Rioja. Pacientes y metodos. Estudio retrospectivo y multicentrico de pacientes con esclerosis multiple recurrente tratados con fingolimod, siguiendo la ficha tecnica. Se evaluo la tasa anualizada de brotes (TAB), el porcentaje de pacientes libres de brotes, la discapacidad usando la escala expandida del estado de discapacidad (EDSS) y el porcentaje de pacientes sin lesiones captantes de gadolinio. Resultados. Un total de 113 pacientes fueron tratados con fingolimod: el 6%, naive, y el 58% y 35%, pacientes tratados previamente con inmunomodulador y natalizumab, respectivamente. El fingolimod disminuyo la TAB tras el primer (67%; 1 a 0,3; p < 0,0001) y segundo (89%; 1 a 0,1; p < 0,0001) año de tratamiento, y aumento asi el porcentaje de pacientes libres de brotes durante el tratamiento. La EDSS basal fue 3 y despues del tratamiento con fingolimod fue 2,5 en ambos años. El porcentaje de pacientes sin lesiones captantes de gadolinio tras el primer año de tratamiento fue del 77%. Resultados similares se observaron en los pacientes naive y en los tratados previamente con inmunomodulador. En los pacientes tratados previamente con natalizumab no se observaron cambios tras el tratamiento. Conclusiones. El uso del fingolimod en la practica clinica mostro una efectividad similar a la eficacia observada en ensayos clinicos. No hubo cambios en la TAB al cambiar desde natalizumab, y solo un paciente tras suspender el natalizumab presento 'rebrote'. El fingolimod se comporta como un farmaco seguro, con escasos efectos adversos y con un bajo porcentaje de abandonos.

  13. [Cultural adaptation and Argentine validation of the Northwick Park Neck Pain Questionnaire in the hospitals of the Autonomous City of Buenos Aires].

    PubMed

    Aguirre, Mariana V; Rodríguez, Matias G; Clarett, Martín; Iribarne, Juan I; Martínez, Marianela; Battistotti, Romina; López de Arcaute, Ana S; Adarves, Romina; Orsini, Esteban

    2013-01-01

    Objetivo: realizar la adaptación cultural y validación del Cuestionario Northwick Park (NPQ) en Argentina, determinando sus propiedades psicométricas, en pacientes con dolor cervical de origen mecánico derivados al Servicio de Kinesiología del Hospital D. F. Santojanni. Materiales y Métodos: Se solicitó la autorización del autor original del NPQ, luego se realizó la adaptación lingüística y prueba piloto. Las propiedades psicométricas incluyeron: confiabilidad test-retest (coeficiente de correlación intraclase, CCI), validez (coeficiente de correlación de Pearson NPQ-Escala Análoga Visual, EVA), consistencia interna (alfa de Cronbach) y sensibilidad al cambio (prueba T para pruebas pareadas NPQ-EVA). Se incluyeron consecutivamente 60 pacientes de septiembre de 2007 a febrero de 2009 con dolor cervical mecánico. Se midieron las variables porcentaje de discapacidad (NPQ) y dolor (EVA) al día del ingreso, a las 24 horas y al alta. Resultados: Veintiséis pacientes completaron el estudio, 4 fueron eliminados y 30 no completaron la 3° medición. Se obtuvo una buena confiabilidad test-retest (ICC 0.8979) y una alta consistencia interna (alfa de Cronbach 0.86). La validez mostró una buena correlación (r= 0,678). La sensibilidad al cambio fue buena (r=0.661). Conclusión: El NPQ es un instrumento válido, confiable y sensible para evaluar la discapacidad asociada al dolor cervical de origen mecánico en pacientes atendidos en el ámbito hospitalario de la Ciudad Autónoma de Buenos Aires.

  14. [ASSOCIATION BETWEEN DIETARY GLYCEMIC INDEX AND GLYCEMIC LOAD AND INTIMA MEDIA THICKNESS IN A POPULATION AT HIGH CARDIOVASCULAR RISK: A SUBGROUP ANALYSIS IN THE PREDIMED TRIAL].

    PubMed

    Goñi Ruiz, Nuria; Martínez González, Miguel Ángel; Salas Salvadó, Jordi; Buil Cosiales, Pilar; Diez Espino, Javier; Martinez Vila, Eduardo; Irimia Sierra, Pablo; Ros Rahola, Emilio; Toledo Atucha, Estefania

    2015-11-01

    Introducción: el grosor de la íntima media carotídea (GIMC) es un conocido marcador de arteriosclerosis precoz y un buen predictor de eventos cardiovasculares futuros. Aunque se ha demostrado que la adhesión a la dieta mediterránea, especialmente si está enriquecida con aceite de oliva virgen extra o frutos secos, tiene efectos beneficiosos sobre los cambios en el GIMC, el papel de los carbohidratos en el desarrollo de la arterioesclerosis sigue siendo controvertido. Objetivo: valorar la relación entre el índice glucémico (IG) o la carga glucémica (CG) de la dieta y el GIMC en una población asintomática con alto riesgo cardiovascular. Métodos: en el marco del estudio PREDIMED (PREvención con Dieta MEDiterránea), se seleccionaron de manera aleatorizada 187 sujetos del centro PREDIMED- NAVARRA. A estos pacientes asintomáticos, pero con alto riesgo cardiovascular, se les realizó una ecografía carotídea basal para determinar su GIMC, y tras un año en el estudio se les repitió la misma medición. Se usó un cuestionario validado de frecuencia de consumo de alimentos (137 ítems) tanto basal como anualmente para obtener el IG y la CG, que fueron categorizados en cuartiles, tras ser ajustados por energía. Mediante modelos multivariables (ANCOVA) se estudió la posible asociación entre el IG o la CG de la dieta y el GIMC o su cambio al año. Resultados: en la población estudiada no se observó una asociación estadísticamente significativa entre el IG o la CG y el GIMC, ni al inicio ni tras un año de seguimiento.

  15. Sobrevivendo a un tsunami: lecciones de Chile, Hawai y Japon

    USGS Publications Warehouse

    Compilado por Atwater, Brian F.; Cisternas V., Marco; Bourgeois, Joanne; Dudley, Walter C.; Hendley, James W.; Stauffer, Peter H.

    1999-01-01

    Este folleto contiene historias veridicas que ilustran como sobrevivir, y como no sobrevivir, a un tsunami. Esta publicacion esta dirigida a las personas que viven, trabajan o, simplemente, se divierten a lo largo de las costas que pueden ser afectadas por un tsunami. Tales costas rodean la mayor parte del Oceano Pacifico pero tambien incluyen algunas areas costeras de los Oceanos Atlantico e Indico. Aunque mucha gente llama a los tsunamis 'olas de marea', estos no estan relacionados a las mareas, sino son una serie de olas, o 'tren de olas', generalmente causadas por cambios en el nivel del fondo marino durante los terremotos. Los tsunamis tambien pueden ser generados por la erupcion de volcanes costeros, islas volconicas, deslizamientos submarinos e impactos de grandes meteoritos en el mar. Como sucedio en Sumatra en el 2004, los tsunamis pueden alcanzar alturas de 15 metros, no tan solo en la costa sino tambien kilometros tierra adentro. Los relatos presentados en este folleto fueron seleccionados de entrevistas realizadas a personas que sobrevivieron al tsunami del Oceano Pacifico de 1960. Muchas de estas personas, incluyendo a la enfermera de la foto, se enfrento a las olas generadas a poca distancia, en la costa chilena. En cambio, otros debieron hacer frente al tsunami muchas horas despues, en Hawai y Japon. La mayoria de las entrevistas fueron realizadas a fines de los anos ochenta y en los noventa. Las historias ofrecen una mezcla de lecciones de supervivencia a un tsunami. En algunos casos se presentan las acciones que confiablemente salvaron vidas: poner atencion a los avisos de la naturaleza, abandonar los bienes, dirigirse rapidamente a un sector alto y permanecer alli hasta que el tsunami realmente haya terminado. Otras historias describen como se encontro refugio al subir a construcciones y arboles o flotar sobre desechos, tacticas que tuvieron diferentes resultados y que pueden ser recomendadas solo como actos desesperados de personas atrapadas en

  16. [Dietary training for school food service providers in support of the Acuerdo Nacional para la Salud Alimentaria].

    PubMed

    Muñoz-Dávila, Carolina; Rangel-Peniche, Diana Beatriz

    2015-01-01

    Introducción: en apoyo a la problemática de sobrepeso y obesidad en México, en el 2010 se publicó el Acuerdo Nacional para la Salud Alimentaria. A nivel escolar, los comodatarios se consideraron fundamentales para cumplir con ciertos compromisos. El objetivo de esta intervención fue capacitar a comodatarios de los Establecimientos de Consumo Escolar (ECE) en cuanto a los criterios establecidos en los “Lineamientos Generales para el Expendio y Distribución de Alimentos en Planteles de Educación Básica.” Métodos: participaron 13 ECE en San Luis Potosí. Con base en un diagnóstico inicial, se diseñó un curso-taller de 5 sesiones. Se evaluaron conocimientos en materia alimentaria al inicio y al final de las sesiones. Se obtuvo el porcentaje de apego en cuanto a higiene general, preparación y distribución de alimentos, al inicio, al mes y a los dos meses postintervención. Resultados: los comodatarios presentaron pocos conocimientos en los objetivos que persigue el “Acuerdo” en grupos y combinación de alimentos así como en lectura de etiquetas; con cambios significativos en los dos últimos tras la intervención. El porcentaje inicial de cumplimiento en higiene general fue del 60 %, con un incremento de casi 20 % postcapacitación. La preparación y distribución de alimentos no presentaron cambios significativos. Conclusiones: los comodatarios adquirieron conocimientos sobre los lineamientos que debe cubrir un ECE, sin ponerlos en práctica, dado el impacto que ello implica en su economía.

  17. [Key recommendations of the clinical guidelines of arterial hypertension in primary care].

    PubMed

    Valenzuela-Flores, Adriana Abigail; Solórzano-Santos, Fortino; Valenzuela-Flores, Alma Gabriela; Durán-Arenas, Luis G; Ponce de León-Rosales, Samuel; Oropeza-Martínez, M Patricia; Gómez-García, Jesús Alejandro; Moreno-Ruiz, Luis A; Martínez-Vargas, Romel; Hernández-Amezcua, Lucía; Escobar-Rodríguez, David; Martínez-Flores, Enrique; Viniegra-Osorio, Arturo; Oest-Dávila, Cecilio Walterio; Soria-Guerra, Mariana

    2016-01-01

    Introducción: la hipertensión arterial (HA) ocupa el primer lugar de atención en unidades médicas de primer nivel. La mitad de los pacientes con HA no están controlados. El objetivo de este documento es proporcionar las recomendaciones de la guía de diagnóstico y tratamiento de HA en el primer nivel de atención que han sido consideradas clave para el proceso de atención, con el fin de ayudar a los profesionales de la salud, en la toma de decisiones clínicas. Métodos: la guía se integró con recomendaciones de guías internacionales y evidencias de estudios publicados que señalaron los cambios ocurridos en el abordaje y tratamiento de la HA, así como las diferencias entre los grupos poblacionales blanco de la guía. La búsqueda de información se realizó por medio de una secuencia estandarizada en Pubmed y Cochrane Library Plus. Las recomendaciones clave se eligieron por consenso de un grupo de profesionales y gestores de la salud. Conclusiones: las recomendaciones clave, basadas en evidencias, ayudarán a tomar decisiones estandarizadas sobre prevención, diagnóstico y tratamiento en pacientes con HA, y coadyuvarán a disminuir el riesgo cardiovascular, impulsar cambios en el estilo de vida, controlar la enfermedad y reducir las complicaciones.

  18. Aerobic Mercury-resistant bacteria alter Mercury speciation and retention in the Tagus Estuary (Portugal).

    PubMed

    Figueiredo, Neusa L; Canário, João; O'Driscoll, Nelson J; Duarte, Aida; Carvalho, Cristina

    2016-02-01

    Aerobic mercury-resistant bacteria were isolated from the sediments of two highly mercury-polluted areas of the Tagus Estuary (Barreiro and Cala do Norte) and one natural reserve area (Alcochete) in order to test their capacity to transform mercury. Bacterial species were identified using 16S rRNA amplification and sequencing techniques and the results indicate the prevalence of Bacillus sp. Resistance patterns to mercurial compounds were established by the determination of minimal inhibitory concentrations. Representative Hg-resistant bacteria were further tested for transformation pathways (reduction, volatilization and methylation) in cultures containing mercury chloride. Bacterial Hg-methylation was carried out by Vibrio fluvialis, Bacillus megaterium and Serratia marcescens that transformed 2-8% of total mercury into methylmercury in 48h. In addition, most of the HgR bacterial isolates showed Hg(2+)-reduction andHg(0)-volatilization resulting 6-50% mercury loss from the culture media. In summary, the results obtained under controlled laboratory conditions indicate that aerobic Hg-resistant bacteria from the Tagus Estuary significantly affect both the methylation and reduction of mercury and may have a dual face by providing a pathway for pollution dispersion while forming methylmercury, which is highly toxic for living organisms.

  19. Ecology and life history of an amoebomastigote, Paratetramitus jugosus, from a microbial mat: new evidence for multiple fission

    NASA Technical Reports Server (NTRS)

    Enzien, M.; McKhann, H. I.; Margulis, L.

    1989-01-01

    Five microbial habitats (gypsum crust, gypsum photosynthetic community, Microcoleus mat, Thiocapsa scum, and black mud) were sampled for the presence of the euryhaline, rapidly growing amoebomastigote, Paratetramitus jugosus. Field investigations of microbial mats from Baja California Norte, Mexico, and Salina Bido near Matanzas, Cuba, reveal that P. jugosus is most frequently found in the Thiocapsa layer of microbial mats. Various stages of the life history were studied using phase-contrast, differential-interference, and transmission electron microscopy. Mastigote stages were induced and studied by electron microscopy; mastigotes that actively feed on bacteria bear two or more undulipodia. A three-dimensional drawing of the kinetid ("basal apparatus") based on electron micrographs is presented. Although promitoses were occasionally observed, it is unlikely that they can account for the rapid growth of P. jugosus populations on culture media. Dense, refractile, spherical, and irregular-shaped bodies were seen at all times in all cultures along with small mononucleate (approximately 2-7 micrometers diameter) amoebae. Cytochemical studies employing two different fluorescent stains for DNA (DAPI, mithramycin) verified the presence of DNA in these small bodies. Chromatin-like material seen in electron micrographs within the cytoplasm and blebbing off nuclei were interpreted to the chromatin bodies. Our interpretation, consistent with the data but not proven, is that propagation by multiple fission of released chromatin bodies that become small amoebae may occur in Paratetramitus jugosus. These observations are consistent with descriptions of amoeba propagules in the early literature (Hogue, 1914).

  20. Tectonic setting of basic igneous and metaigneous rocks of Borborema Province, Brazil using multi-dimensional geochemical discrimination diagrams

    NASA Astrophysics Data System (ADS)

    Verma, Sanjeet K.; Oliveira, Elson P.

    2015-03-01

    Fifteen multi-dimensional diagrams for basic and ultrabasic rocks, based on log-ratio transformations, were used to infer tectonic setting for eight case studies of Borborema Province, NE Brazil. The applications of these diagrams indicated the following results: (1) a mid-ocean ridge setting for Forquilha eclogites (Central Ceará domain) during the Mesoproterozoic; (2) an oceanic plateau setting for Algodões amphibolites (Central Ceará domain) during the Paleoproterozoic; (3) an island arc setting for Brejo Seco amphibolites (Riacho do Pontal belt) during the Proterozoic; (4) an island arc to mid-ocean ridge setting for greenschists of the Monte Orebe Complex (Riacho do Pontal belt) during the Neoproterozoic; (5) within-plate (continental) setting for Vaza Barris domain mafic rocks (Sergipano belt) during the Neoproterozoic; (6) a less precise arc to continental rift for the Gentileza unit metadiorite/gabbro (Sergipano belt) during the Neoproterozoic; (7) an island arc setting for the Novo Gosto unit metabasalts (Sergipano belt) during Neoproterozoic; (8) continental rift setting for Rio Grande do Norte basic rocks during Miocene.