Results 1 to 10 of about 1,806 (184)

MODELANDO FLUJO UNIDIMENSIONAL NO ESTABLE EN CANALES DE ANCHO Y PROFUNDIDAD VARIABLE

Ingeniería, 2011
se introduce un modelo hidrodinámico no estable que reproduce flujos unidimensionales en canales cuyo ancho, profundidad y longitud puede variar.  El modelo es de uso en la predicción de inundaciones en ríos sujetos a cambios temporales drásticos como ...
Luis Manuel Murillo B
doaj   +5 more sources

Tell Me How Much DNA You Have and I'll Tell You What Your Sex Is: Sex Determination by Flow Cytometry of Spiderlings of Allocosa marindia [PDF]

Ecology and Evolution
Sex identification at early stages of development is of great interest for studies in evolutionary biology in many animals. Knowing the sex ratio, even more in offspring, allows testing hypotheses related to the cause of sex ratio biases in populations ...
Leticia Bidegaray‐Batista, Nadia Kacevas, Federico F. Santiñaque, Magdalena Vaio, Macarena González   +4 more
doaj   +3 more sources

Un neuro-controlador estable en tiempo real para reducir el consumo de energía en una bomba centrífuga ante perturbaciones

Revista Iberoamericana de Automática e Informática Industrial RIAI, 2022
En este trabajo se propuso la aplicacion de un método de sintonización en línea basado en redes neuronales para un controlador PID que regula el flujo en una bomba centrífuga.
Eduardo Yudho-Montes de Oca, Mario Cesar Maya-Rodríguez, René Tolentino-Eslava, Yair Lozano-Hernández   +3 more
doaj   +1 more source

Aplicación de isótopos estables como indicadores de flujos de energía en ambientes costeros de Uruguay

INNOTEC, 2017
El análisis de isótopos estables en sedimentos, vegetales y animales representa una herramienta de importancia para estudios ecológicos, reconstrucciones paleoclimáticas y paleoambientales. Con base en la diferenciación isotópica entre productores primarios, esta técnica ha tenido un gran impacto en la identificación de flujos de energía entre ...
Bergamino, Leandro, Tudurí, Adriana, Bueno, Carolina, Brugnoli, Ernesto, Valenzuela, Luciano Oscar, Martínez, Ana, Perez Becoña, Laura, Scarabino, Fabricio   +7 more
openaire   +5 more sources

Does invasion by armored catfish shift trophic ecology of native fishes? Evidence from stable isotope analysis

Ecology, Volume 104, Issue 5, May 2023., 2023
Abstract Popular as aquarium fish, armored catfishes from South America (Pterygoplichthys spp.) have been introduced and become invasive in tropical and subtropical regions worldwide. These ecosystem engineers can deplete basal resources (e.g., periphyton and detritus), with potential negative effects for native fauna. We studied the trophic ecology of
Yasmín Quintana, Friedrich Wolfgang Keppeler, Kirk O. Winemiller   +2 more
wiley   +1 more source

Urban–rural continuum: an overview of their interactions and territorial disparities

Regional Science Policy &Practice, Volume 15, Issue 4, Page 729-768, May 2023., 2023
Abstract This study provides a quantitative analisis of the interactions between urban and rural areas and related territorial disparities in the European Union (EU). Relevant societal themes such as population changes, access to services, broadband internet connectivity, house prices, tourism and land‐use/cover flows are examined by mean of indicators
Carolina Perpiña Castillo, Sjoerdje van Heerden, Ricardo Barranco, Chris Jacobs‐Crisioni, Mert Kompil, Andrius Kučas, Jean Philippe Aurambout, Filipe Batista e Silva, Carlo Lavalle   +8 more
wiley   +1 more source

Estudio de flujos verticales de carbono y nitrógeno en ambientes acuáticos controlados en la bahía de Knebel, Dinamarca utilizando isótopos estables de nitrógeno y carbono (15N y 13C) [PDF]

Revista chilena de historia natural, 2001
RESUMEN En este estudio se utilizaron isotopos estables como trazadores para caracterizar y cuantificar el flujo vertical de carbonoy nitrogeno. Los experimentos se llevaron a cabo en la bahia de Knebel, Dinamarca (56o 08’ N, 10o 11’ E), en dosambientes acuaticos controlados tipo mesocosmos. La adicion de nutrientes inorganicos estimulo el afloramiento
openaire   +3 more sources

Rapid preparation of rodent testicular cell suspensions and spermatogenic stages purification by flow cytometry using a novel blue-laser-excitable vital dye

MethodsX, 2014
Availability of purified or highly enriched fractions representing the various spermatogenic stages is a usual requirement to study mammalian spermatogenesis at the molecular level.
Rosana Rodríguez-Casuriaga, Federico F. Santiñaque, Gustavo A. Folle, Elisa Souza, Beatriz López-Carro, Adriana Geisinger   +5 more
doaj   +1 more source

Skill‐Relatedness and Regional Economic Development in Spain during the International Crisis and the Post‐Crisis Period

Papers in Regional Science, Volume 101, Issue 3, Page 573-602, June 2022., 2022
Abstract The aim of this research was to study the influence of related variety on the economic performance of Spanish provinces during the international crisis (2009–2013) and the post‐crisis period (2014–2018), with the goal of contributing to assess the validity of the skill‐relatedness approach.
Simón Sánchez‐Moral, Mário Vale, Alfonso Arellano   +2 more
wiley   +1 more source

Can regional policies shape migration flows?

Papers in Regional Science, Volume 101, Issue 3, Page 515-536, June 2022., 2022
Abstract Our empirical analysis focuses on the effect of regional policies on migration attraction factors in Europe. We employ a regression discontinuity design to assess the causal relationship between the reception of large amounts of public funds and migration flows in the EU‐15 regions. In highly‐subsidised regions, we find a large increase in the
Augusto Cerqua, Guido Pellegrini, Ornella Tarola   +2 more
wiley   +1 more source