Performance of the \u3ci\u3eLeucaena leucocephala\u3c/i\u3e–\u3ci\u3eMegathyrsus maximus\u3c/i\u3e cv Mombasa System and Local Range Grazed by Pelibuey Ewe-Lambs

Mombasa grass and leucaena have shown an excellent agronomic performance grown in tropical semi-arid ranges, the objective of this study was to compare the agronomic performance of Leucaena-Mombasa grown as a silvopastoral system at two leucaena plant densities (10000 and 15000 plants ha-1) and of Pelibuey ewe-lambs grazing it against native unimproved tropical semi-arid range of the state of Morelos, México. Experimental design was a completely random with two replications. Unimproved native range was mainly deciduous shrubs and mixed herbaceous plants (Poaceae and Asteraceae). Stocking rate was the same across treatments and grazing lasted all rainy season. Of the agronomic variables determined, both Leucaena-Mombasa systems showed the same (p\u3e 0.05) forage on-offer total and expressed as herbage-allowance but 29 and 15% higher (p≤ 0.05) respectively than the unimproved native range. Leucaena-Mombasa at the highest leucaena density showed the highest harvest rate, 22 and 50% higher (p≤ 0.05) than the registered at the lower density and unimproved native range, respectively. Unimproved native range herbaceous layer showed 40% higher (p≤ 0.05) crude protein content than the layer at both Leucaena-Mombasa systems; tree fodder was only different (p\u3c 0.05) in in vitro dry matter digestibility, tree fodder from both Leucaena-Mombasa systems was 32% higher (p≤ 0.05) than that of unimproved native range. Ewe-lambs grazing any of the Leucaena-Mombasa systems showed a daily weight gain 1.5 times higher (p\u3c 0.05) than those grazing the unimproved native range. It was concluded that Leucaena-Mombasa system is an option to improve agronomic and animal performances compare to unimproved tropical native range

La relevancia de la investigación social a nivel local para el diseño de políticas municipales: el diagnóstico social de la ciudad de Valencia

Presentamos algunos de los resultados obtenidos con la investigación ?Diagnóstico Social de la Ciudad de València, 2017?, realizada en el marco de un convenio de colaboración entre el Ayuntamiento de València, a través de la Concejalía de Servicios Sociales y del Servicio de Bienestar Social e Integración y la Universitat de València (Red Incluye). Uno de los rasgos más relevantes de la investigación fue su enfoque local, territorial y subterritorial en el desarrollo metodológico y técnico de la investigación al estarorientada a proporcionar información actualizada, inédita y relevante para las funciones del personal técnico de las once áreas de los Centros Municipales de Servicios Sociales (CMSS). El diagnóstico consta de dos fases. En la primera se realizó un análisis de las principales tendencias socio demográficas en cada área de los CMSS, periodo 2003-2016. La segunda fase fue elaborada en base a una encuesta, elaborada por el equipo de investigación, realizada en 1.676 hogares de la ciudad de Valencia entre los meses de abril a julio del 2017. Con once submuestras independientes para cada área de CMSS. Los resultados aportan una visión en el espacio local-urbano de la ciudad de València de los procesos de polarización y agudización de las desigualdades sociales, caracterizados por la consolidación de áreas en donde los efectos de la crisis económica han sido prácticamente imperceptibles y otros donde se observa una concentración de la población en situación de riesgo pobreza y vulnerabilidad relacionada tanto con la cristalización de largos procesos de exclusión como con el surgimiento de ?nuevos perfiles? de vulnerabilidad

Proposition of a method based on mind maps to study changes in users’ perceptions during an IS/IT adoption process

Although knowledge about IS/IT adoption is very broad, it is fragmented, and we still do not understand well how users move dynamically from one stage to another during the adoption process, that is, from when a user knows a new technology until, if the process is successful, she/he incorporates it into her/his routine. One of the causes of this theoretical limitation relates to the lack of methodologies that help researchers analyze longitudinally collected data and distinguish changes that occur over time as participants experience the implementation of the new system. In this article, we present a method based on mind maps that allows researchers to graphically synthesize the mental processes experienced by individuals as they adopt a new system. The method allows comparing and measuring changes among mental models of an individual in different stages of the adoption. Findings show that this method better reflects user perceptions than others based on surveys and technical processing of textual data. Using mind maps is a novel contribution to researching and understanding technology adoption in a holistic way and with methods that include time as a contextual variable in the adoption process

New prey items in the diet of snakes from the Yucatán Peninsula, Mexico

New prey items are reported in snakes that were found run over during night road trips, belonging to the families Colubridae, Dipsadidae, Elapidae and Viperidae from the Yucatán Peninsula, Mexico.Asociación Herpetológica Argentin

New prey items in the diet of snakes from the Yucatán Peninsula, Mexico

New prey items are reported in snakes that were found run over during night road trips, belonging to the families Colubridae, Dipsadidae, Elapidae and Viperidae from the Yucatán Peninsula, Mexico.Asociación Herpetológica Argentin

New prey items in the diet of snakes from the Yucatán Peninsula, Mexico

New prey items are reported in snakes that were found run over during night road trips, belonging to the families Colubridae, Dipsadidae, Elapidae and Viperidae from the Yucatán Peninsula, Mexico.Asociación Herpetológica Argentin

Informe automático y análisis de reproducibilidad de experimentos proteómicos cualitativos mediante la herramienta "MIAPE extractor"

Comunicaciones a congreso

Operación de whipple en adenocarcinoma de vesícula biliar con invasión a colédoco y duodeno.

NAN

Meteorus arizonensis Muesebeck, 1923 (Hymenoptera: Braconidae): nuevo registro para México

Braconidae is one of the more diverse families of Hymenoptera with almost 20,000 species worldwide. Meteorus has 316 species and is almost cosmopolitan. Previously, seven species of this genus have been recorded from Mexico. In this note, Meteorus arizonensis Muesebeck is recorded for the first time for the country, obtained from the fall armyworm, Spodoptera frugiperda (J.E. Smith), with materialfrom Santa Maria del Oro, locality in the State of Nayarit

Beta-cell mass adaptation to ileum nutrient flow. An experimental model

The population with obesity has increased at an alarming rate during this century. Bariatric surgery has been demonstrated to be a good method to control weight and, most importantly, associated comorbidities, such as type 2 diabetes mellitus or high blood pressure. The reason why this happens even before losing significant weight remains unclear. Many authors believe that incretins play a main role, triggering special functions of the digestive tract. In reports, these hypotheses are known as foregut and hindgut theories. Initially, the theories were mutually exclusive; additionally, many other propositions have been analysed, according to different surgical techniques (e.g., bile acids and specific enterohormonal components). To elucidate the participation of the ileum, we developed a surgical technique to study the rapid response to nutrients in the ileum. Our goal was to study the stress functional test and histological changes in the pancreas that may explain the variations in glycaemic homeostasis in our rat model. After the oral glucose tolerance test, the experimental group presented an increased insulin release response with conserved glycaemia. We report an increasing beta-cell mass in the experimental group (+11.87 mg vs. +9.65 mg, respectively), while alpha-cell mass was not different. Based on transcription factors, the pathways that were increased were the proliferation process (as the number of PCNA-positive cells in the experimental group versus sham (+12.06 vs. +6.2 PCNA+ cells/mm2)) and transdifferentiation (ARX; +2.67 ARX+ cells/mm2 in the experimental group vs. +2.04 ARX+ cells/mm2 in the controls). We report the consequences of the rapid arrival of nonprocessed nutrients to the ileum on the endocrine cellular pancreas. The ileum could be a principal effector in the enterohormonal axis, which conditions endocrine pancreas cellularit