345 research outputs found

    Factores asociados a los tipos de trauma obstétrico en recién nacidos en el Hospital Regional Docente de Trujillo del 2004 al 2005

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    The level of association of some selected factors to the observed types of obstetrical trauma in newborns in the Obstetrics Service of the “Hospital Regional Docente de Trujillo” during the 2004-2005 period was studied. A retrospective, nonexperimental, cross section design of simple descriptive type was used to previously find out the incidence of the obstetrical trauma and of comparative descriptive type to study the association between this variable and the considered factors; the relevant information of clinical histories of each analysis unit (newborn and his corresponding mother) was compiled in Cards of Data Collection and analyzed with the exact test of Fisher to establish the significance of the association between both variables It was found that the global incidence of obstetrical trauma was 17,60% and that the caput succedaneum, cefalohematoma and fracture of clavicle were the injuries of greater incidence with 15,99%, 1,52% and 0,23%, respectively; it was also found that exists significant association only between the primiparity and the above mentioned injuries, the low mother stature and the fracture of clavicle, the great prematurity and the multiple pregnancy with the nonappearance of caput succedaneum, the macrocephaly and the fracture of clavicle, the prolonged childbirth and caput succedaneum, the forceps-assisted vaginal childbirth and cefalohematoma, as well as between the maneuver of Kristeller and caput succedaneum and the fracture of clavicle.Se investigó qué factores están asociados a los tipos de trauma obstétrico observados en recién nacidos en el Servicio de Obstetricia del Hospital Regional Docente de Trujillo durante el período 2004-2005. Se empleó un diseño retrospectivo, no experimental, de corte transversal y de tipo descriptivo simple para averiguar previamente la incidencia del trauma obstétrico y descriptivo comparativo para estudiar la asociación entre esta variable y los factores considerados; la información relevante de las historias clínicas de cada unidad de análisis (niño y su correspondiente madre) fue recopilada en Fichas de Recolección de Datos y analizada con la prueba exacta de Fisher para establecer la significancia de la asociación entre ambas variables. Se halló que la incidencia global de trauma obstétrico fue de 17,60% y que el caput succedaneum, el cefalohematoma y la fractura de clavícula fueron las lesiones de mayor incidencia con 15,99%, 1,52% y 0,23%, respectivamente. Asimismo, se halló que sólo existe asociación significativa en los siguientes casos: entre la primiparidad y las lesiones antes mencionadas, entre la talla baja y la fractura de clavícula, entre la gran prematuridad y el embarazo múltiple con la no aparición de caput succedaneum, entre la macrocefalia y la fractura de clavícula, entre el parto prolongado y el caput succedaneum, entre el parto vaginal instrumentado con fórceps y el cefalohematoma; fina1mente, entre la maniobra de Kristeller con el caput succedaneum y la fractura de clavícula

    Caracterización preliminar de las interacciones aguas subterráneas-humedales-ser humano en Iberoamérica y en la Península Ibérica

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    El proyecto UNESCO IGCP 604 tiene como objetivo elaborar un marco conceptual sobre las interacciones aguas subterráneas–humedales-ser humano, y está motivado por el Programa de Evaluación de los Ecosistemas del Milenio de Naciones Unidas. Como resultados preliminares se ha elaborado información de catorce humedales en nueve países. Sus características morfológicas, hidrológicas, químicas, etc. son muy variables. Solamente los servicios de abastecimiento de agua y de regulación hídrica parecen estar ampliamente extendidos, con una tendencia dominante a mantenerse estables o a empeorar. Todos los servicios culturales son frecuentes y muestran una tendencia mayoritaria a mejorar. Entre los factores que inducen cambios en los servicios, los de impacto más extendido son: extracción de agua, cambios en el uso de suelo, contaminación y cambio climático y global. Presentan impactos variables, pero la tendencia general es a mantenerse estables o a aumentar.This paper presents the preliminary results of The UNESCO project IGCP 604, whose objec-tive is to elaborate a conceptual framework on groundwater-wetland-human beings interactions, and is moti-vated by the UNESCO Millennium Ecosystems Assessment Programme. Data from fourteen wetlands in nine countries have been elaborated. Their morphological, hydrological, chemical, etc. characteristics are highly variable. Only the water supply and water regulation services seem to be widely extended, and their general evolution trend is to be stable or to worsen. All the cultural services seem to be widely extended, and the dominant trend is to improve. The factors that most widely induce changes in wetland services are water ex-traction, biological exploitation, changes in land use, pollution, and climate and global change. They cause variable impacts, which tend to be stable or to increase

    Emotional cues enhance the attentional effects on spatial and temporal resolution

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    In the present study, we demonstrated that the emotional significance of a spatial cue enhances the effect of covert attention on spatial and temporal resolution (i.e., our ability to discriminate small spatial details and fast temporal flicker). Our results indicated that fearful face cues, as compared with neutral face cues, enhanced the attentional benefits in spatial resolution but also enhanced the attentional deficits in temporal resolution. Furthermore, we observed that the overall magnitudes of individuals’ attentional effects correlated strongly with the magnitude of the emotion × attention interaction effect. Combined, these findings provide strong support for the idea that emotion enhances the strength of a cue’s attentional response

    Analysis of an Interplanetary Coronal Mass Ejection by a spacecraft radio signal: A case study

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    Tracking radio communication signals from planetary spacecraft with ground-based telescopes offers the possibility to study the electron density and the interplanetary scintillation of the solar wind. Observations of the telemetry link of planetary spacecraft have been conducted regularly with ground antennae from the European Very Long Baseline Interferometry Network, aiming to study the propagation of radio signals in the solar wind at different solar elongations and distances from the Sun. We have analyzed the Mars Express spacecraft radio signal phase fluctuations while, based on a 3-D heliosphere plasma simulation, an interplanetary coronal mass ejection (ICME) crossed the radio path during one of our observations on 6 April 2015. Our measurements showed that the phase scintillation indices increased by a factor of 4 during the passage of the ICME. The method presented here confirms that the phase scintillation technique based on spacecraft signals provides information of the properties and propagation of the ICMEs in the heliosphere

    Venus Express radio occultation observed by PRIDE

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    Context. Radio occultation is a technique used to study planetary atmospheres by means of the refraction and absorption of a spacecraft carrier signal through the atmosphere of the celestial body of interest, as detected from a ground station on Earth. This technique is usually employed by the deep space tracking and communication facilities (e.g., NASA's Deep Space Network (DSN), ESA's Estrack). Aims. We want to characterize the capabilities of the Planetary Radio Interferometry and Doppler Experiment (PRIDE) technique for radio occultation experiments, using radio telescopes equipped with Very Long Baseline Interferometry (VLBI) instrumentation. Methods. We conducted a test with ESA's Venus Express (VEX), to evaluate the performance of the PRIDE technique for this particular application. We explain in detail the data processing pipeline of radio occultation experiments with PRIDE, based on the collection of so-called open-loop Doppler data with VLBI stations, and perform an error propagation analysis of the technique. Results. With the VEX test case and the corresponding error analysis, we have demonstrated that the PRIDE setup and processing pipeline is suited for radio occultation experiments of planetary bodies. The noise budget of the open-loop Doppler data collected with PRIDE indicated that the uncertainties in the derived density and temperature profiles remain within the range of uncertainties reported in previous Venus' studies. Open-loop Doppler data can probe deeper layers of thick atmospheres, such as that of Venus, when compared to closed-loop Doppler data. Furthermore, PRIDE through the VLBI networks around the world, provides a wide coverage and range of large antenna dishes, that can be used for this type of experiments

    Heat Transfer and Thermal Energy Storage Enhancement by Foams and Nanoparticles

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    The use of innovative methods for the design of heating, cooling, and heat storage devices has been mainly oriented in the last decade toward the use of nanofluids, metal foams coupled with working fluids, or phase change materials (PCMs). A network of nine Italian universities achieved significant results and innovative ideas on these topics by developing a collaborative project in the last four years, where different approaches and investigation techniques were synergically employed. They evaluated the quantitative extent of the enhancement in the heat transfer and thermal performance of a heat exchanger or thermal energy storage system with the combined use of nanofluids, metal foams, and PCMs. The different facets of this broad research program are surveyed in this article. Special focus is given to the comparison between the mesoscopic to macroscopic modeling of heat transfer in metal foams and nanofluids, as well as to the experimental data collected and processed in the development of the research

    Prevalencia de tuberculosis infantil en armenia, colombia

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    Objetivo Determinar la prevalencia de tuberculosis (TB) infantil y los factores socio-demográficos asociados a esta población en el municipio de Armenia (Colombia). Metodología Se realizó un estudio descriptivo-retrospectivo en el cual se incluyeron pacientes con diagnóstico de TB menores de 14 años que fueron notificados al programa de TB en el municipio de Armenia y que iniciaron esquema de Tratamiento Acortado Estrictamente Supervisado (TAES) entre el 2000-2009. Resultados Se notificaron un total de 58 casos de TB, el mayor número de casos ocurrió en el 2009 (12 casos) seguido del 2008 (8 casos) y 2006 (7 casos) respectivamente, representando una elevada tasa de prevalencia (16,6 casos/100 000 habitantes). Las formas pulmonares tuvieron mayor proporción con 74 %, de las cuales 34 % fueron positivas a la baciloscopia (BK). El nexo epidemiológico se configuró en el 21 % de los enfermos. En cuanto al egreso del programa de control de la TB el 5 % de los pacientes finalizó con criterio de curado, 17 % terminado, 4 % transferidos, 7 % fallecidos  y en el 67 % de los casos se desconoció el resultado del tratamiento. Conclusión La TB representa en la actualidad una causa importante de morbilidad y mortalidad infantil. Dada la buena cobertura de vacunación con BCG y que la mayoría de casos son pulmonares en este municipio, la alta tasa de casos de TB infantil estaría indicando fallas en la oportunidad para interrumpir transmisión reciente a partir de casos bacilíferos

    Seropositivity and Risk Factors Associated with Toxoplasma gondii Infection in Wild Birds from Spain

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    Toxoplasma gondii is a zoonotic intracellular protozoan parasite of worldwide distribution that infects many species of warm-blooded animals, including birds. To date, there is scant information about the seropositivity of T. gondii and the risk factors associated with T. gondii infection in wild bird populations. In the present study, T. gondii infection was evaluated on sera obtained from 1079 wild birds belonging to 56 species (including Falconiformes (n = 610), Strigiformes (n = 260), Ciconiiformes (n = 156), Gruiformes (n = 21), and other orders (n = 32), from different areas of Spain. Antibodies to T. gondii (modified agglutination test, MAT titer ≥1∶25) were found in 282 (26.1%, IC95%:23.5–28.7) of the 1079 birds. This study constitute the first extensive survey in wild birds species in Spain and reports for the first time T. gondii antibodies in the griffon vulture (Gyps fulvus), short-toed snake-eagle (Circaetus gallicus), Bonelli's eagle (Aquila fasciata), golden eagle (Aquila chrysaetos), bearded vulture (Gypaetus barbatus), osprey (Pandion haliaetus), Montagu's harrier (Circus pygargus), Western marsh-harrier (Circus aeruginosus), peregrine falcon (Falco peregrinus), long-eared owl (Asio otus), common scops owl (Otus scops), Eurasian spoonbill (Platalea leucorodia), white stork (Ciconia ciconia), grey heron (Ardea cinerea), common moorhen (Gallinula chloropus); in the International Union for Conservation of Nature (IUCN) “vulnerable” Spanish imperial eagle (Aquila adalberti), lesser kestrel (Falco naumanni) and great bustard (Otis tarda); and in the IUCN “near threatened” red kite (Milvus milvus). The highest seropositivity by species was observed in the Eurasian eagle owl (Bubo bubo) (68.1%, 98 of 144). The main risk factors associated with T. gondii seropositivity in wild birds were age and diet, with the highest exposure in older animals and in carnivorous wild birds. The results showed that T. gondii infection is widespread and can be at a high level in many wild birds in Spain, most likely related to their feeding behaviour

    TRY plant trait database - enhanced coverage and open access

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    Plant traits-the morphological, anatomical, physiological, biochemical and phenological characteristics of plants-determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait-based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits-almost complete coverage for 'plant growth form'. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait-environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives
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