Results 31 to 40 of about 52,901 (212)
Functional polymeric materials for hard water treatment a comprehensive review
Discover MaterialsHard water, characterized by elevated concentrations of calcium (Ca²⁺) and magnesium (Mg²⁺) ions, poses substantial challenges to domestic, industrial, and environmental systems. Conventional treatment methods—such as chemical precipitation, ion exchange,
Olivia Hernández-Cruz +2 more
doaj +1 more source
Repertorio de Medicina y Cirugía, 2021 Introducción: desde la identificación de los primeros casos de enfermedad por coronavirus 2019 (COVID-19) originada por el síndrome respiratorio agudo severo coronavirus 2 (SARS-CoV-2) en diciembre 2019, la pandemia resultante ha dado lugar a más de 130 ...
Jorge Enrique Díaz Pinzón
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Conservation Biology, EarlyView.Abstract Monitoring wildlife health is essential for conservation and management, wildlife and livestock welfare, and public health in a One Health framework. Yet, wildlife health monitoring often requires long‐term fieldwork and intensive sampling, which can be costly or logistically challenging, especially for remote, rare, or elusive populations. To
Jonathan Tichon +8 more
wiley +1 more source
La educación secundaria: evaluación, pruebas estandarizadas y dinámicas institucionales
RECIE Revista Electrónica Científica de Investigación Educativa, 2012 El presente trabajo contiene los resultados de un estudio etnográfico, apoyado por el Fondo Mixto CONACYT-Gobierno del Estado de Chihuahua, que se llevó a cabo en ocho escuelas secundarias federalizadas –cuatro generales y cuatro técnicas-, ubicadas en ...
David Manuel Arzola Franco
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Role of funders in embedding tests in conservation practice
Conservation Biology, EarlyView.Abstract Effective conservation practice requires decisions based on reliable and relevant evidence, but significant gaps in the evidence base exist. Incorporating well‐designed tests of the effectiveness of interventions for biodiversity in conservation projects is one of the best ways to scale up the rate of evidence generation.
Rebecca K. Smith +28 more
wiley +1 more source
FUsaM: Framework, con base en una SPL, para la medición de usabilidad en aplicaciones móviles
Uniciencia, 2016 El uso masivo de los dispositivos móviles, asociado a la heterogeneidad de estos y también de los usuarios, implica un desafío al momento de evaluar la usabilidad de las aplicaciones móviles.
Juan G. Enríquez, Sandra I. Casas
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Conservation Biology, EarlyView.Abstract Ecological niche models (ENMs) are used to assess the abiotic preferences of species by linking their occurrences to the environmental conditions in which they live. We developed a fossil‐informed ENM framework that integrates mid‐Holocene and modern occurrences to test niche stability and reconstruct abiotic niche characteristics for four ...
Claire. M. Williams +3 more
wiley +1 more source
Participation in learning assessments in the developing world, 1960-2009
Education Policy Analysis Archives, 2014 This paper examines annual changes in the participation of developing countries in different kinds of learning assessments over the past three decades.
David H. Kamens, Aaron Benavot
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