15 resultados para Agricultural ecology (General)

em Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco


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Fecha: 15/23-10-1937 (>1970 reproducción) / Unidad de instalación: Carpeta 45 - Expediente 1-7 / Nº de pág.: 5 (mecanografiadas)

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Fecha: 26/27-5-1939 / Unidad de instalación: Carpeta 45 - Expediente 2-8 / Nº de pág.: 4 (mecanografiadas)

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[EN]A survey of Canadian retail beef was undertaken with emphasis on the trans fatty acid (TFA) and conjugated linoleic acid (CLA) isomers, and compared with current health recommendations. Thirty striploin steaks were collected in the winter and summer from major grocery stores in Calgary (Alberta, Canada). Steak fatty acid compositions (backfat and longissimus lumborum muscle analysed separately) showed minor seasonal differences with lower total saturates (PB0.05) and higher total monounsaturates (PB 0.01) in winter, but no differences in total polyunsaturated fatty acids. The ratio of n-6 and n-3 polyunsaturated fatty acid in longissimus lumborum averaged 5.8. The average TFA content in longissimus lumborum was 0.128 g 100 g_1 serving size, and 10t-18:1 was found to be the predominant isomer (32% of total trans), while vaccenic acid was second most abundant (15% of total trans). The CLA content in longissimus lumborum was similar to that of backfat, ranging from 0.43 to 0.60% of total fatty acids and rumenic acid represented 60% of total isomers. Overall, there is still room for improvement in the saturated, mono- and polyunsaturated fatty acid composition of Canadian beef to meet general dietary guidelines for human consumption and additional targets should include reducing 10t-18:1 while increasing both rumenic and vaccenic acids.

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[EN]Most of the information indicating ageing improves tenderness has been collected on the loin and rib-eye muscles over relatively short ageing times, assuming that all muscles will react similarly. In the present study, the effect of extended ageing times on instrumental texture (56 d) and sensory characteristics (42 d) of six different beef sub-primals [striploin (SL), inside round (IR), outside round (OR), eye of round (ER), blade eye (BE) and chuck tender (CT)] was studied. The effects of two ageing temperatures (1and 58C) were also compared. In general, ageing increased tenderness (P<0.05) of SL, BE, ER and CT sub-primals, although BE shear force increased after 42 d of ageing. On the other hand, ageing had no effect on IR tenderness (P<0.05) and resulted in a decrease in tenderness of OR (P<0.05) until day 35, with a later increase after 42 d of ageing. Increasing ageing temperature (58C) had limited effect on tenderness, but ageing time and temperature increases led to lower flavour and higher off-flavour intensity (P<0.05) of the studied sub-primals. These results suggest that cutspecific maximum ageing times and rigid adherence to temperature maximums would be of benefit to optimize postslaughter processes and meat quality

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Tracking the evolution of research in waste recycling science (WRS) can be valuable for environmental agencies, as well as for recycling businesses. Maps of science are visual, easily readable representations of the cognitive structure of a branch of science, a particular area of research or the global spectrum of scientific production. They are generally built upon evidence collected from reliable sources of information, such as patent and scientific publication databases. This study uses the methodology developed by Rafols et al. (2010) to make a “double overlay map” of WRS upon a basemap reflecting the cognitive structure of all journal-published science, for the years 2005 and 2010. The analysis has taken into account the cognitive areas where WRS articles are published and the areas from where it takes its intellectual nourishing, paying special attention to the growing trends of the key areas. Interpretation of results lead to the conclusion that extraction of energy from waste will probably be an important research topic in the future, along with developments in general chemistry and chemical engineering oriented to the recovery of valuable materials from waste. Agricultural and material sciences, together with the combined economics, politics and geography field, are areas with which WRS shows a relevant and ever increasing cognitive relationship.

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La valoración de las existencias es uno de los aspectos más problemáticos que tienen las empresas a la hora de presentar sus estados contables. La distinta normativa existente, las variantes que suscita y la complejidad de su interpretación conlleva a valoraciones distintas para las diferentes clases de existencias, afectando a los informes contables y consecuentemente a la toma de decisiones de los responsables empresariales. El acercamiento de las normas contables españolas a las Normas Internacionales de Contabilidad/Normas Internacionales de Información Financiera (NIC/NIIF) puede hacer que aparentemente la diversidad en las valoraciones sea menor. En este artículo queremos presentar la nueva normativa contable española emanada por el Plan General de Contabilidad de 2007 y las semejanzas y diferencias con las NIC/NIIF en todos sus apartados

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Tras varias décadas de armonización contable de mínimos mediante la incorporación de las Directivas Comunitarias a cada legislación nacional, la estrategia actual de la Unión Europea de adoptar las normas emitidas por el Consejo Internacional de Normas de Información Financiera (IASB por sus siglas en inglés) y de hacer obligatoria su aplicación a las cuentas consolidadas de las empresas cotizadas para los ejercicios iniciados a partir de 2005, ha traído como consecuencia la necesidad de someter la legislación mercantil y contable en España a una reforma que, en sus principios fundamentales, culminó en 2007. En este artículo revisamos el tratamiento de uno de los aspectos que ha supuesto más modificaciones conceptuales en su contabilización, el impuesto de sociedades, tal como deberá ser reflejado en las cuentas que se preparen sobre los ejercicios iniciados a partir del 1 de enero de 2008.

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IARD 8th Biennial Conference on Classical and Quantum Relativistic Dynamics of Particles and Fields - Galileo Galilei Inst Theoret Phys (GGI), Florence, ITALY - MAY 29-JUN 01, 2012. Edited by:Horowitz, LP