Residual Forage and Animal Performance from a Kikuyo Pasture under Mixed Grazing and Supplementation

Five grazing strategies were compared: grazing by ewes only and mixed grazing (ewes + heifers), in mixed grazing heifers received no supplement or one of three supplements. Ruminal undegradable protein (RUP) varied among supplement: 4.25, 9.11 and 9.13%, the supplement with the highest RUP included protected methionine. All supplements were 21% crude protein and 3.0 Mcal/kg of metabolizable energy. Grazing was on kikuyu, ratio was 30 kg of ewe per 100 kg of heifer in the mixed grazing treatments. Experimental grazing lasted 84 days. Variables measured were residual forage, proline content in residual forage and liveweight gains per animal and per hectare. Experimental design was a completely random with two replicates. Residual forage was the highest (P\u3c 0.05) in mixed grazing and RUP in supplement was above 4.25%. The highest (P\u3c 0.05) proline content was found in grazing by ewes only, 52% above the proline content found in mixed grazing without supplement, when heifers received supplement proline content decreased (P\u3c 0.05) further. Grazing by ewes only and mixed grazing with heifersreceiving the highest RUP in supplement showed the highest (P\u3c 0.05) daily liveweight gain per ewe of 134 g. Mixed grazing in which heifers received no supplement gave a 100% increase (P\u3c 0.05) in liveweight gain per hectare compared to grazing by ewes only. In mixed grazing offering a supplement with 9.13% RUP and protected methionine gave both the highest liveweight gains per animal and per hectare. It was concluded that mixed grazing allowed a lower stress level on kikuyu due to defoliation and a higher liveweight gain per hectare than grazing by ewes only

Maxwell homogenization scheme for piezoelectric composites with arbitrarily-oriented spheroidal inhomogeneities

International audienc

Methodology for optimization of distributed biomass resources evaluation, management and final energy use

[EN] A methodology has been developed to assess optimal management and energy use of distributed biomass resources, where logistics is a main factor but other features must be also considered: biomass resources properties (quantity, quality, seasonality & availability), plant size effect, available technologies for power, heat and solid biofuels generation, CO2 emissions balance and quantification of potential biofuel consumers. This methodology provides a quantification and characterization of biomass resources, a list of optimal locations from logistic point of view and the necessary data to perform detailed technical, economic and environmental analysis of the different biomass energy use options. It has been applied to three districts of the Valencian region in Spain and main results and conclusions are also included in this paper.This work was completed in the framework of the activities of the biomass research group of the IIE (Instituto de Ingenieria Energetica) in regional, national and international. The authors deeply thank all the organizations involved in these projects for their support and, specially, IMPIVA-Generalitat Valenciana, the Spanish Ministry of Science and Technology and the European Commission for the projects BIOVAL, BIODER and EU-DEEP respectively, for the provided funding that made this work possible.Alfonso-Solar, D.; Perpiñá, C.; Pérez-Navarro, A.; Peñalvo-López, E.; Vargas-Salgado, C.; Cárdenas, R. (2009). Methodology for optimization of distributed biomass resources evaluation, management and final energy use. Biomass and Bioenergy. 33(8):1070-1079. https://doi.org/10.1016/j.biombioe.2009.04.0021070107933

Microscopic mechanism for mechanical polishing of diamond (110) surfaces

Mechanically induced degradation of diamond, as occurs during polishing, is studied using total--energy pseudopotential calculations. The strong asymmetry in the rate of polishing between different directions on the diamond (110) surface is explained in terms of an atomistic mechanism for nano--groove formation. The post--polishing surface morphology and the nature of the polishing residue predicted by this mechanism are consistent with experimental evidence.Comment: 4 pages, 5 figure

Optimización de la vida de baterías en plantas fotovoltaicas mediante algoritmos genéticos

[Resumen] Este artículo analiza el problema de la reducción del envejecimiento producido en baterías cuando éstas se utilizan en un una planta fotovoltaica (FV) que participa en el mercado de electricidad y, por tanto, debe generar de una manera controlada en 24 escalones horarios para satisfacer la producción comprometida en las pujas de mercado. El trabajo presentado propone una estrategia basada en una optimización mediante algoritmos genéticos para la determinación de esos 24 escalones de potencia de manera que el envejecimiento que se produce, calculado mediante un algoritmo de Rainflow counting, sea mínimo, al mismo tiempo que se vierte a la red toda la potencia generada por la planta. Se ofrecen resultados de simulación, a partir de datos de generación FV obtenidos de una base de datos europea, que muestran que la estrategia propuesta produce un envejecimiento en la batería menor que el que se obtiene con otras técnicas de optimización.Universitat Jaume I; P1-1B2015-36https://doi.org/10.17979/spudc.978849749808

Aniridia congénita y microcefalia en dos gemelas

Revisar casos y literatura sobre presencia de aniridia y microcefalia

Predicción de la irradiancia a partir de datos de satélite mediante deep learning

[Resumen] El conocimiento con antelación de la irradiancia solar en la superfície en una ubicación determinada presenta diversas utilidades para las plantas fotovoltaicas, como la participación más ventajosa en el mercado eléctrico o las menores necesidades de almacenamiento para ello. En este trabajo se estudian diferentes alternativas para la estimación de la irradiancia a posteriori y se propone una red neuronal artificial que, utilizando esta estimación, predice la irradiancia solar futura con una hora de antelación.Universitat Jaume I de Castellón; P1-1B2015-36Ministerio de Economía; DPI2014-53245-

Ensayo biogeográfico de la Pteridoflora valenciana

En el presente trabajo se realiza un análisis comparativo de las pteridofloras de los diiferentes sectores fitogeográficos (sensu Costa, 1986) que integran la Comunidad Valenciana.The present paper deals with the biogeography and of pteridophytes in the Comunidad Valenciana (Levante, Spain), following the present chorological division of this area

NAFO Cod 3M Workshop Current Assessment and Projection Uncertainties

On behalf of the Specific Contract No. 03 (SC03) Support to a robust model assessment, benchmark and development of a management strategy evaluation for cod in NAFO Division 3M under the Framework Contract EASME/EMFF/2016/008 Provision of Scientific Advice for Fisheries beyond EU Waters, the NAFO 3M cod assessment Workshop was held at the Instituto Español de Oceanografia (IEO), Vigo-Beiramar, Spain, during 21st-23rd March 2017. With the inclusion of the following three new points the provisional agenda (ToRs for Task 1 of SC03) was approved (Annex 1): Presentation of the Specific Contract No. 03 (SC03) Support to a robust model assessment, benchmark and development of a management strategy evaluation for cod in NAFO Division 3M. Proposals to be submitted to the 2017 June NAFO Scientific Council (SC) meeting. Recommendations from this Workshop on matters that need to be deeper studied during the benchmark process.The Executive Agency for Small and Medium-sized Enterprises (EASME