143 research outputs found

    Una propuesta de reconversión territorial en la microcuenca del Río Moro, comuna de Puyehue, Décima Región, Chile

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    The Moro River basin, Comuna de Puyehue, Osorno, is analyzed. Currently, cattle use grasslands replace the native forests. Deforestation has produced imbalances in the hydrological cycle eventually affecting the city of Osorno in the form of pollution and reduced flow rates. The main goal of this work is to convert the territory of the watershed, by increasing forest area, in a setting conducive to development through the identification of technically suitable forest and socially acceptable alternatives. Economic attractions for owners of land, by changing land use on the river bank are shown. Is planed reforest river edges Moro River system considering the incentives offered by the market and forest legislation, according to Decree Law No. 701 of 1974. As methodology applies the technique of costbenefit analysis of deforestation alternatives, with information up on an inquiry of residents about their background demographic, legal, technical, commercial, economic, environmental expectations and their acceptance to the project. The results show that in general there is willingness to accept the project. Consequently, it is proposed reforestation with native species suited to the climate and soil, especially from family Mirtaceae, and melliferous species, which can develop various production systems such as agroforestry and exploitation of beehives, and with the exotic Castanea sativa, wood, lumber or firewood, and his marketable fruit . This would produce positive externalities, such as economic benefits (increased income into the household) and social improvements (better quality of life and status) to the resident population, adding also environmental benefits such as regulation of the hydrological balance of the watershed, increasing forest area as natural habitat and biodiversity benefits involved.    Se analiza la rnicrocuenca del Río Moro, Comuna de Puyehue, Osomo. Actualmente, praderas de uso ganadero reemplazan al bosque nativo, deforestación que ha producido desequilibrios en el ciclo hidrológico afectando finalmente a la ciudad de Osorno en forma de contaminación y disminución de los caudales. Se trata de reconvertir el territorio de la Microcuenca mediante el aumento de la superficie forestal, en un escenario propicio para el desarrollo, a través de la determinación de alternativas forestales técnicamente adecuadas y socialmente aceptables. Se demuestran atractivos económicos para los propietarios de los terrenos, por la modificación del uso del suelo sobre la ribera del río. Se plantea reforestar los bordes fluviales del sistema río Moro considerando los incentivos que ofrecen el mercado y la legislación forestal, según el Decreto Ley N° 701 de 1974. Como metodología se aplica la técnica de análisis costo-beneficio a distintas alternativas de forestación, con información levantada en una encuesta a los habitantes sobre sus antecedentes demográficos, legales, técnicos, comerciales, económicos, expectativas ambientales y su aceptación al proyecto. Los resultados muestran que en general existe disposición a aceptar el proyecto. En consecuencia, se propone reforestar con especies nativas adaptadas al clima y suelo, especialmente de la familia Mirtaceae y especies melíferas, que permitan desarrollar diversos sistemas productivos, tales como agroforestería y explotación de apiarios, y con especies exóticas maderables, comerciables como metro ruma, madera aserrable o leña, como Castanea sativa, de fruto comerciable. Ello produciría extemalidades positivas, tales como beneficios económicos (mayores ingresos al grupo familiar) y mejorías sociales (mejoría de la calidad de vida y del status) a la población habitante, agregando también beneficios ambientales tales como la regulación del equilibrio hidrológico de la microcuenca, el aumento del área forestada como hábitat natural y los beneficios a la biodiversidad implícitos.  

    Efeitos de uma sessão de jogo pequeno baseado em handebol na atenção seletiva e sustentada e atenção em uma amostra de adultos jovens

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    Estudios previos han puesto de relieve los efectos crónicos y agudos que el ejercicio físico tiene sobre el funcionamiento cognitivo. Sin embargo, es necesario seguir profundizando para obtener información precisa sobre qué tipo de ejercicio es más favorable sobre determinadas capacidades cognitivas. Así, el objetivo de este trabajo fue analizar los efectos de una sesión de juegos reducidos basados en el balonmano sobre la atención selectiva, sostenida y amplitud atencional en una muestra de adultos jóvenes. Formaron parte de este estudio 52 participantes con edades entre 21 y 25 años (M= 21.83; DT= .94) procedentes de la ciudad de Málaga (España). Se empleó un diseño de investigación cuasiexperimental intersujetos con grupo control y experimental. Mediante análisis estadísticosno paramétricos (U Mann Whitney y Wilcoxon) se trató de explorar los efectos de la sesión de actividad físico/deportiva sobre cuatro pruebas de amplitud atencional, dos de atención selectiva y una de atención sostenida. Los resultados mostraron efectos estadísticamente significativos sobre las pruebas de atención selectiva y amplitud atencional, aunque no en la prueba de atención sostenida. Los hallazgos encontrados sugieren que la actividad físico-deportiva colectiva podría tener un efecto agudo significativo sobre la atención, aunque sería necesario seguir indagando sobre qué dimensiones específicas de la atención, dadas las diferencias encontradas entre unos parámetros y otros.Previous studies have highlighted the chronic and acute effects that physical exercise has on cognitive functioning. However, it is necessary to go deeper in order to obtain precise information on what typeof exercise is more favorable for certain cognitive abilities. Thus, the objective of this work was to analyze the effects of a session of small games based on handball on selective, sustained attention and attention span in a sample of young adults. Fifty-two participants between the ages of 21 and 25 (M= 21.83; SD= .94) from the city of Malaga (Spain) took part in this study. A quasi-experimental intersubject's research design was used with a control and experimental group. Using non-parametric statistical analyzes (U Mann Whitney and Wilcoxon) we tried to explore the effects of the physical/sports activity session on four tests of attention span, two of selective attention and one of sustained attention. The results showed statistically significant effects on the selective tests and attention span, although not on the sustained attention test. The findings suggest that collective physical-sporting activity could have a significant acute effect on attention, although it would be necessary to continue investigating the specific dimensions of attention, given the differences found between some parameters and others.Estudos anteriores destacaram os efeitos crônicos e agudos que o exercício físico tem no funcionamento cognitivo. No entanto, é necessário aprofundar este conhecimento para obter informações mais precisas sobre qual tipo de exercício mais favorável para determinadas habilidades cognitivas. Assim, o objetivo deste trabalho foi analisar os efeitos de uma sessão de pequenos jogos baseados no andebol na atenção seletiva, sustentada e capacidade de atenção numa amostra de adultos jovens. Cinquenta e dois participantes com idades compreendidas entre 21 e 25 anos (M= 21,83; DP= ,94)da cidade de Málaga (Espanha) participaram deste estudo.Um projeto de pesquisa intersujeitos quase-experimental foi usado com um grupo de controlo e experimental. Através de análises estatísticas não paramétricas (U Mann Whitney e Wilcoxon) procurámos explorar os efeitos da sessão de atividade física/desportiva em quatro testes de capacidade de atenção, dois de atenção seletiva e um de atenção sustentada. Os resultados evidenciaram diferenças estatisticamente significativos nos testes de atenção e seletivos, mas não no teste de atenção sustentada. Os resultadosencontrados sugerem que a atividade físico-desportiva coletiva pode ter um efeito agudo significativo na atenção, embora seja necessário continuar a investigar as dimensões específicas da atenção, dadas as diferenças encontradas entre alguns parâmetro

    How to Save Endangered Magnolias? From Population Biology to Conservation Action: The Case of Allopatric Radiation in Western Mexico

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    Numerous Neotropical Magnolia species are endangered and red-listed by the IUCN. Here we highlight major results from over a decade of research on endangered magnolias in western Mexico. Particularly, we compare three species of Magnolia (M. pugana, M. pacifica and M. vallartensis) along a large-scale continentality and moisture gradients, in terms of a) their morphological adaptations, b) genetic structure, diversity, and differentiation, c) reproductive phenology, and d) floral scents and their floral visitors. Fieldwork along this gradient unveiled two new species of Magnolia sect. Magnolia; M. granbarrancae and M. talpana. We found that most continental populations have a higher extinction risk than those with greater maritime influence, due to their lower genetic diversity, and greater fragmentation, isolation, and water stress. Also, these populations are more vulnerable to the environmental conditions predicted with the global warming climate scenarios. We share fieldwork experience and advise on pre-germination treatments and seed dormancy. We propose an ex-situ and in-situ conservation strategy, identify new challenges, and suggest future directions of collaborative work as a global Magnolia conservation consortium

    The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment

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    The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourteenth from SDSS overall (making this, Data Release Fourteen or DR14). This release makes public data taken by SDSS-IV in its first two years of operation (July 2014-2016). Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey (eBOSS); the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data driven machine learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS website (www.sdss.org) has been updated for this release, and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020, and will be followed by SDSS-V.Comment: SDSS-IV collaboration alphabetical author data release paper. DR14 happened on 31st July 2017. 19 pages, 5 figures. Accepted by ApJS on 28th Nov 2017 (this is the "post-print" and "post-proofs" version; minor corrections only from v1, and most of errors found in proofs corrected

    Nightside condensation of iron in an ultra-hot giant exoplanet

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    Ultra-hot giant exoplanets receive thousands of times Earth's insolation. Their high-temperature atmospheres (>2,000 K) are ideal laboratories for studying extreme planetary climates and chemistry. Daysides are predicted to be cloud-free, dominated by atomic species and substantially hotter than nightsides. Atoms are expected to recombine into molecules over the nightside, resulting in different day-night chemistry. While metallic elements and a large temperature contrast have been observed, no chemical gradient has been measured across the surface of such an exoplanet. Different atmospheric chemistry between the day-to-night ("evening") and night-to-day ("morning") terminators could, however, be revealed as an asymmetric absorption signature during transit. Here, we report the detection of an asymmetric atmospheric signature in the ultra-hot exoplanet WASP-76b. We spectrally and temporally resolve this signature thanks to the combination of high-dispersion spectroscopy with a large photon-collecting area. The absorption signal, attributed to neutral iron, is blueshifted by -11+/-0.7 km s-1 on the trailing limb, which can be explained by a combination of planetary rotation and wind blowing from the hot dayside. In contrast, no signal arises from the nightside close to the morning terminator, showing that atomic iron is not absorbing starlight there. Iron must thus condense during its journey across the nightside.Comment: Published in Nature (Accepted on 24 January 2020.) 33 pages, 11 figures, 3 table

    The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment

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    The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014–2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V

    Strange Particle Production in pp Collisions at sqrt(s) = 0.9 and 7 TeV

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    A Solve-RD ClinVar-based reanalysis of 1522 index cases from ERN-ITHACA reveals common pitfalls and misinterpretations in exome sequencing

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    Purpose Within the Solve-RD project (https://solve-rd.eu/), the European Reference Network for Intellectual disability, TeleHealth, Autism and Congenital Anomalies aimed to investigate whether a reanalysis of exomes from unsolved cases based on ClinVar annotations could establish additional diagnoses. We present the results of the “ClinVar low-hanging fruit” reanalysis, reasons for the failure of previous analyses, and lessons learned. Methods Data from the first 3576 exomes (1522 probands and 2054 relatives) collected from European Reference Network for Intellectual disability, TeleHealth, Autism and Congenital Anomalies was reanalyzed by the Solve-RD consortium by evaluating for the presence of single-nucleotide variant, and small insertions and deletions already reported as (likely) pathogenic in ClinVar. Variants were filtered according to frequency, genotype, and mode of inheritance and reinterpreted. Results We identified causal variants in 59 cases (3.9%), 50 of them also raised by other approaches and 9 leading to new diagnoses, highlighting interpretation challenges: variants in genes not known to be involved in human disease at the time of the first analysis, misleading genotypes, or variants undetected by local pipelines (variants in off-target regions, low quality filters, low allelic balance, or high frequency). Conclusion The “ClinVar low-hanging fruit” analysis represents an effective, fast, and easy approach to recover causal variants from exome sequencing data, herewith contributing to the reduction of the diagnostic deadlock

    Mortality from gastrointestinal congenital anomalies at 264 hospitals in 74 low-income, middle-income, and high-income countries: a multicentre, international, prospective cohort study

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    Summary Background Congenital anomalies are the fifth leading cause of mortality in children younger than 5 years globally. Many gastrointestinal congenital anomalies are fatal without timely access to neonatal surgical care, but few studies have been done on these conditions in low-income and middle-income countries (LMICs). We compared outcomes of the seven most common gastrointestinal congenital anomalies in low-income, middle-income, and high-income countries globally, and identified factors associated with mortality. Methods We did a multicentre, international prospective cohort study of patients younger than 16 years, presenting to hospital for the first time with oesophageal atresia, congenital diaphragmatic hernia, intestinal atresia, gastroschisis, exomphalos, anorectal malformation, and Hirschsprung’s disease. Recruitment was of consecutive patients for a minimum of 1 month between October, 2018, and April, 2019. We collected data on patient demographics, clinical status, interventions, and outcomes using the REDCap platform. Patients were followed up for 30 days after primary intervention, or 30 days after admission if they did not receive an intervention. The primary outcome was all-cause, in-hospital mortality for all conditions combined and each condition individually, stratified by country income status. We did a complete case analysis. Findings We included 3849 patients with 3975 study conditions (560 with oesophageal atresia, 448 with congenital diaphragmatic hernia, 681 with intestinal atresia, 453 with gastroschisis, 325 with exomphalos, 991 with anorectal malformation, and 517 with Hirschsprung’s disease) from 264 hospitals (89 in high-income countries, 166 in middleincome countries, and nine in low-income countries) in 74 countries. Of the 3849 patients, 2231 (58·0%) were male. Median gestational age at birth was 38 weeks (IQR 36–39) and median bodyweight at presentation was 2·8 kg (2·3–3·3). Mortality among all patients was 37 (39·8%) of 93 in low-income countries, 583 (20·4%) of 2860 in middle-income countries, and 50 (5·6%) of 896 in high-income countries (p<0·0001 between all country income groups). Gastroschisis had the greatest difference in mortality between country income strata (nine [90·0%] of ten in lowincome countries, 97 [31·9%] of 304 in middle-income countries, and two [1·4%] of 139 in high-income countries; p≤0·0001 between all country income groups). Factors significantly associated with higher mortality for all patients combined included country income status (low-income vs high-income countries, risk ratio 2·78 [95% CI 1·88–4·11], p<0·0001; middle-income vs high-income countries, 2·11 [1·59–2·79], p<0·0001), sepsis at presentation (1·20 [1·04–1·40], p=0·016), higher American Society of Anesthesiologists (ASA) score at primary intervention (ASA 4–5 vs ASA 1–2, 1·82 [1·40–2·35], p<0·0001; ASA 3 vs ASA 1–2, 1·58, [1·30–1·92], p<0·0001]), surgical safety checklist not used (1·39 [1·02–1·90], p=0·035), and ventilation or parenteral nutrition unavailable when needed (ventilation 1·96, [1·41–2·71], p=0·0001; parenteral nutrition 1·35, [1·05–1·74], p=0·018). Administration of parenteral nutrition (0·61, [0·47–0·79], p=0·0002) and use of a peripherally inserted central catheter (0·65 [0·50–0·86], p=0·0024) or percutaneous central line (0·69 [0·48–1·00], p=0·049) were associated with lower mortality. Interpretation Unacceptable differences in mortality exist for gastrointestinal congenital anomalies between lowincome, middle-income, and high-income countries. Improving access to quality neonatal surgical care in LMICs will be vital to achieve Sustainable Development Goal 3.2 of ending preventable deaths in neonates and children younger than 5 years by 2030

    stairs and fire

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