Results 1 to 10 of about 338 (106)

Evolution of research on global amphibian declines. [PDF]

Conserv Biol
Abstract In the late 1980s, the scientific community became aware of severe, enigmatic amphibian population declines. These declines triggered a wave of research focused on quantifying their extent and identifying key drivers. We used text‐analysis techniques, including topic modeling and geoparsing, to examine the evolution of research focused on ...
Crawford-Ash J, Evans MJ, Carvalho T, Rowley JJL, Garner TWJ, Muths E, Scheele BC.   +6 more
europepmc   +2 more sources

Microalgae lipid extraction: a novel lab-scale method within a biorefinery approach (fractioning)

Tecnología y Ciencia, 2022
Extraction and fractioning of microalgal lipids have been recurrently studied because of the market value of certain lipid families (i.e. carotenoids and xanthophylls) and the opportunity that microalgal oils represent for obtaining biofuels. Most of the
Andrea Natalia Pila, Maria Carolina Cuello, Roberto Martin Schmitd, Ester Chamorro   +3 more
doaj   +1 more source

Theoretical Investigation of Glycine Micro-Solvated. Energy and NMR Spin Spin Coupling Constants Calculations

Sci, 2021
Glycine in its neutral form can exist in the gas phase while its zwitterion form is more stable in water solution, but how many waters are actually necessary to stabilize the zwitterionic structure in the gas phase?
Maria Cristina Caputo, Patricio Federico Provasi   +1 more
doaj   +1 more source

Integrating habitat‐masked range maps with quantifications of prevalence to estimate area of occupancy in IUCN assessments

Conservation Biology, Volume 37, Issue 1, February 2023., 2023
Abstract Estimates of species geographic ranges constitute critical input for biodiversity assessments, including those for the International Union for the Conservation of Nature (IUCN) Red List of Threatened Species. Area of occupancy (AOO) is one metric that IUCN uses to quantify a species’ range, but data limitations typically lead to either under ...
Robert P. Anderson
wiley   +1 more source

Holding out the promise of Lasswell's dream: Big data analytics in public policy research and teaching

Review of Policy Research, Volume 38, Issue 6, Page 640-660, November 2021., 2021
Abstract While the emergence of big data raises concerns regarding governance and public policy, it also creates opportunities for diversifying the toolkit for analysis for the policy sciences as a whole, i.e., research concerning policy analysis as well as policy studies.
Ola G. El‐Taliawi, Nihit Goyal, Michael Howlett   +2 more
wiley   +1 more source

Uso de Emulsiones Pickering en la Reaccion de Obtención de Terpineol a partir de Aceite Esencial de Pomelo

Tecnología y Ciencia, 2020
El objetivo de este trabajo fue aumentar el rendimiento y selectividad en la reacción de obtención de α-terpineol a partir de limoneno, componente mayoritario del aceite esencial de pomelo, con el uso de emulsiones pickering de agua:aceite. Se utilizaron
Gustavo Adolfo Velasco, Liliana Mariel Cáceres, Silvia Noemí Zambón, Esther R. Chamorro   +3 more
doaj   +1 more source

Soluciones relacionadas con el entorno alimentario para prevenir la obesidad infantil en América Latina y en la población latina que vive en Estados Unidos

Obesity Reviews, Volume 22, Issue S5, Octubre 2021., 2021
Resumen El entorno alimentario es un factor importante que contribuye a las dietas poco saludables en la niñez y, por tanto, a las crecientes tasas de obesidad. Los países de Latinoamérica han recibido el reconocimiento internacional por su liderazgo en la implementación de políticas dirigidas a distintos aspectos del entorno alimentario.
Ana Clara Duran, Melissa Mialon, Eric Crosbie, Melissa Lorena Jensen, Jennifer L. Harris, Carolina Batis, Camila Corvalán, Lindsey Smith Taillie   +7 more
wiley   +1 more source

Digital data sources and methods for conservation culturomics

Conservation Biology, Volume 35, Issue 2, Page 398-411, April 2021., 2021
Abstract Ongoing loss of biological diversity is primarily the result of unsustainable human behavior. Thus, the long‐term success of biodiversity conservation depends on a thorough understanding of human–nature interactions. Such interactions are ubiquitous but vary greatly in time and space and are difficult to monitor efficiently at large spatial ...
Ricardo A. Correia, Richard Ladle, Ivan Jarić, Ana C. M. Malhado, John C. Mittermeier, Uri Roll, Andrea Soriano‐Redondo, Diogo Veríssimo, Christoph Fink, Anna Hausmann, Jhonatan Guedes‐Santos, Reut Vardi, Enrico Di Minin   +12 more
wiley   +1 more source

Modelado de un cuello robótico blando mediante aprendizaje automático

Revista Iberoamericana de Automática e Informática Industrial RIAI, 2023
En este trabajo se aborda el problema del modelado de un cuello robótico blando mediante el uso de diferentes arquitecturas de redes neuronales, estudiando la influencia en los resultados del número de capas de cada red y de su correspondiente función de
Nicole A. Continelli, Luis Fernando Nagua Cuenca, Concepción A. Monje, Carlos Balaguer   +3 more
doaj   +1 more source

Metodología híbrida para la estimación del nivel de llenado en un molino de bolas

Revista Iberoamericana de Automática e Informática Industrial RIAI, 2021
Este trabajo presenta una metodología híbrida de modelado basada en técnicas de respuesta dinámica, filtrado e identificación, considerando el dominio del tiempo y la frecuencia, para determinar el modelo representativo de un molino de bolas de ...
Luiz Carlos da Cunha e Silva, Jesus Franklin Andrade Romero   +1 more
doaj   +1 more source