Alternative plant protein sources for pigs and chickens in the tropics – nutritional value and constraints: a review

In the tropics, a large number of smallholder farms contribute significantly to food security by raising pigs and poultry for domestic consumption and for sale on local markets. The high cost and, sometimes, the lack of availability of commercial protein supplements is one of the main limitations to efficient animal production by smallholders. Locally-grown forages and grain legumes offer ecological benefits such as nitrogen fixation, soil improvement, and erosion control which contribute to improve cropping efficiency. Besides these agronomical assets, they can be used as animal feeds in mixed farming systems. In this paper we review options to include locally-grown forages and grain legumes as alternative protein sources in the diets of pigs and poultry in order to reduce farmers’ dependence on externally-purchased protein concentrates. The potential nutritive value of a wide range of forages and grain legumes is presented and discussed. The influence of dietary fibre and plant secondary metabolites contents and their antinutritive consequences on feed intake, digestive processes and animal performances are considered according to the varying composition in those compounds of the different plant species and cultivars covered in this review. Finally, methods to overcome the antinutritive attributes of the plant secondary metabolites using heat, chemical or biological treatment are reviewed regarding their efficiency and their suitability in low input farming systems.

Psychosocial sources of stress and burnout in the consruction sector : a structural equation model. 'Fuentes psicosociales de estr??s y burnout en el sector de la construcci??n : un modelo de ecuaciones estructurales'

Resumen tomado de la publicaci??n. Resumen tambi??n en ingl??s

Quality and relevance of literature sources

A presentation by Debra Morris, Library to support students in understanding the need to use high quality and relevant literature sources in their academic work. The item includes a case study on Wikipedia.

‘Boots for my Sancho’: structural vulnerability among Latin American day labourers in Berkeley, California

This paper addresses the structural vulnerability of Latin American undocumented day labourers in Northern California, as it is expressed in conversations on street corners where they wait for work. The intimate aspects of migrant experience become exemplified in jokes about the Sancho – a hypothetical character who has moved in on a day labourer's family and who enjoys the money he sends home. Joking turns to more serious topics of nostalgia and tensions with family far away, elements that come together with the fears and threats of labour on the corner and affect the way day labourers see themselves. Sexuality is rearticulated in the absence of women and masculinity becomes enmeshed in the contingencies of unregulated work and long-term separation from the people the men support. Together, these elements result in the articulation of threat to the immigrant body itself, which is exemplified by anxieties over homosexual propositions on the corner. Cet article aborde la vulnérabilité structurelle des travailleurs journaliers latino-américains sans papiers dans le Nord de la Californie, telle qu'ils l'expriment dans leurs conversations en attendant du travail aux coins des rues. Les aspects intimes de l'expérience de la migration sont exemplifiés à travers des blagues sur le Sancho – un personnage hypothétique qui, au pays natal, s'est installé dans la famille d'un journalier pour profiter de l'argent qu'elle reçoit de ce dernier. Les blagues deviennent alors des sujets de conversation plus sérieux, sur un fond de nostalgie et de tensions qui résulte de l'éloignement vis-à-vis de la famille – des éléments qui accompagnent les peurs et les menaces liées aux embauches des coins de rue et ont un impact sur la manière dont les journaliers se perçoivent. La sexualité est articulée par rapport à l'absence des femmes et la virilité s'empêtre dans les contingences du travail illégal et de la séparation sur le long terme d'avec les êtres que ces hommes soutiennent financièrement. Ensemble, tous ces éléments ont pour résultat une articulation de la menace vis-à-vis du corps de l'immigré lui-même, qui est exemplifiée par les angoisses dues aux propositions d'homosexuels aux coins des rues.

Sources of life.

El presente proyecto está basado en los siguientes centros de interés: I. La energía y el cuerpo humano. II.Fuentes de energía. III.Incidencia de las aplicaciones técnicas de la energía en el medio ambiente. Como objetivo principal está la elaboración del currículo adaptado a las nuevas realidades de la enseñanza, incluyendo las innovaciones metodológicas, tecnológicas y didácticas más avanzadas. Se pretende, con este proyecto, que no se circunscriba estrictamente al área de lenguas extranjeras, sino que se vincule a otros proyectos de centro. Se eligió el tema 'Sources of life' por el interés que suscitan temas tan actuales como los medioambientales y que están recogidos en los diseños curriculares de las distintas áreas de la Educación Secundaria Obligatoria (ESO). Aplicado a tres institutos de bachillerato de Gran Canaria, no especifica el número de alumnos a los que afectó la experiencia, cuyo nivel es 1 de BUP. A través de reuniones periódicas, se elaboró el material necesario para la confección del currículo. Este material se aplicaba en el aula a través de 'project worker' y centros de interés para desarrollar los contenidos del mismo. No constan resultados.

The influence of culture on parental styles in social vulnerability contexts

The objectives of this study are: (a) to analyze if the relationship between parenting dimensions and children adjustment regarding coping strategies are similar in Argentinian and Spanish samples within poverty contexts; (b) to compare parental dimensions in the two groups studied, and (c) to determine the efficiency of parenting through the study of their influence in children coping strategies. The Graffar-Méndez Castellano Scale (Méndez-Castellano & Méndez, 1994), that brings a socioeconomic description of the population; an Argentinian Scale of Children Perception of Parental Relationships for 8 to 12 years of age (Richaud, 2007a), and the Argentine Questionnaire of Coping for children (Richaud, 2006) were administered to a sample of 458 Spanish and Argentinian children from 8 to 12 years old. Correlations were carried out to analyze the relationships between parenting dimensions and children coping strategies in both groups, and MANOVA, to study if there were different parental dimensions in the two groups —Argentina and Spain—, and to analyze if there were differences in children coping strategies. The results indicate that correlational pattern is similar in both groups, but parental dimensions are different for each culture, being the Argentinian parents more neglectful than Spanish parents. At the same time, Argentinian children adopt coping strategies less efficient that the Spanish children ones, involving in that way a greater emotional conflict.

Estrategias para reducir el nivel de contaminanción fisíca en la planta de producción de Pelpak S.A

Este proyecto busca analizar y formular estrategias que permitan reducir la contaminación física por partículas en la planta de producción de la empresa Pelpak S.A. generando una solución que perdure en el tiempo en la medida que se controla, verifica, mantiene e involucra a los procesos organizacionales. Para ello se plantean una serie de estrategias acordes a las necesidades de la empresa a partir de sus características de infraestructura, equipos y planta de producción teniendo como fundamentación teórica la Norma AIB Internacional con atención específica en los apartes que sean relevantes para cumplir con el proyecto. En la formulación de las estrategias, es fundamental garantizar la protección del envase en las etapas de mayor vulnerabilidad relacionada con la exposición a fuentes contaminantes. El alcance de este proyecto abarca la reducción de los cuerpos extraños en la planta, pues estos generan contaminación en el proceso productivo. Para lograr este resultado, se debe determinar el porqué, quiénes, en dónde y cómo se generan los elementos nocivos con el fin de eliminar, mitigar o controlar esta problemática. Esta investigación arrojó ocho estrategias a tratar, en donde el objetivo de cada una es mejorar el entorno en el cual se trabaja, evitar que el envase se contamine y lograr proteger el envase en las etapas del proceso con la identificación de los puntos críticos. El aseo y limpieza para los techos, pisos y paredes es el común denominador de las estrategias planteadas en este estudio.

A Network model of systemic risk : identifying the sources of dependence across institutions

We design a financial network model that explicitly incorporates linkages across institutions through a direct contagion channel, as well as an indirect common exposure channel. In particular, common exposure is setup so as to link the financial to the real sector. The model is calibrated to balance sheet data on the colombian financial sector. Results indicate that commercial banks are the most systemically important financial institutions in the system. Whereas government owned institutions are the most vulnerable institutions in the system.

Energy saving innovations, non-exhaustible sources of energy and long-run: what would happen if we run out of oil?

We formulate and solve a model of factor saving technological improvement considering three factors of production: labor, capital and energy. The productive activities have three main characteristics: first, in order to use capital goods firms need energy; second, there are two sources of energy: non-exhaustible and exhaustible; third, capital goods can be of different qualities and the quality of these goods can be changed along two dimensions -reducing the need of energy or changing the source of energy used in the production process. The economy goes through three stages of development after industrialization. In the first, firms make use of exhaustible energy and the e¢ ciency in the use of energy is constant. In the second stage, as the price of energy grows the e¢ ciency in its use is increased. In the third stage, the price of exhaustible sources is so high that firms have incentives to use non-exhaustible sources of energy. During this stage the price of energy is constant. In this set up, the end of the oil age has level effects on consumption and output but it does not cause the collapse of the economic system.

Energy Saving Innovations, Non-Exhaustible Sources of Energy and Long-Run: What Would Happen if we Run Out of Oil?

Se formula y resuelve un modelo de cambio tecnológico ahorrador de factores de producción que considera tres factores: capital, trabajo y energía. El modelo cuenta con características específicas con respecto a la interacción n entre la energía (la cual, de acuerdo a su fuente puede ser renovable y no renovable) y el capital. Una vez esta economía se ha definido, se supone que evoluciona en tres etapas luego de su industrialización, durante las cuales el carácter renovable o no renovable de la energía influye su precio relativo, eficiencia y afecta también el nivel agregado de consumo y producción de la economía, sin que esta evolución lleve al colapso del sistema económico.

History pictures : using visual sources to build better history lessons.

Constituye una guía práctica sobre la utilización de las fuentes visuales en las clases de historia en la etapa 3 (key stage 3) y en el General Certificate Secondary Education (GCSE). Además, proporciona técnicas para animar a los alumnos a observar con detenimiento y a saber utilizar las imágenes para investigar en las interpretaciones históricas, entre estas imágenes se encuentran las caricaturas políticas. Incluye actividades en hojas de recursos para fotocopiar.

Sources of perceived sociocultural pressure on physical self-concept

Resumen tomado de la publicaci??n

Obsessive-compulsive disorder and its relationship with disgust vulnerability and conscientiousness

Resumen tomado de la publicaci??n

Influence of vulnerability factors in panic disorder severity

Resumen tomado de la publicaci??n

Computing Distance Functions from Generalized Sources on Weighted Polyhedral Surfaces

We present algorithms for computing approximate distance functions and shortest paths from a generalized source (point, segment, polygonal chain or polygonal region) on a weighted non-convex polyhedral surface in which obstacles (represented by polygonal chains or polygons) are allowed. We also describe an algorithm for discretizing, by using graphics hardware capabilities, distance functions. Finally, we present algorithms for computing discrete k-order Voronoi diagrams