Interciencia articles from December 2006

Interciencia archives from December 2006

Of women, science and somewhat more/De mujeres, ciencia y algo mas/ De mulheres, ciencia e algo mais.(EDITORIAL)(Editorial)
December 1, 2006... A year ago, in Bangalore, India, the Third General Assembly of the Third World Organization of Women Scientists (TWOWS) and the International Conference on Impact of Women in Science and Technology in the Third World were celebrated. TWOWS is...

Application of the knowledge about animal behavior in animal production/Aplicacion del conocimiento de la conducta animal en la produccion pecuaria/Aplicacao do conhecimento da conduta animal na producao pecuaria.
December 1, 2006... SUMMARY Ethology is the science which studies animal behavior. It is as old as man, although it has only been in recent years that its importance has been recognized, when Lorenz, Tinbergen and von Frish were awarded the Nobel Prize of...

Trace analysis for the establisment of conservation areas in the trasmexican volcanic belt/Analisis de trazos para establecer areas de conservacion en la faja volcanica transmexicana/Analise de tracos para estabelecer areas de conservacao na faixa vulcanica transmexicana.
December 1, 2006... SUMMARY The Transmexican Volcanic Belt is recognized as a province based on geologic, tectonic, geomorphologic and biogeographic characteristics. The Belt is a volcanic arch extending from the Pacific coast in Jalisco and Nayarit states to...

Mechanism of action of entomopathogenic fungi/Mecanismo de accion de los hongos entomopatogenos/Mecanismo de acao dos fungos entomopatogenos.
December 1, 2006... SUMMARY Entomopathogenic fungi have a great potential as control agents, as they constitute a group with over 750 species that, when dispersed in the environment, provoke fungal infections in insect populations. These fungi begin their...

Distribution of germanium in sediments and sedimentary rock: applications as an indicator of geochemical processes/Distribucion de germanio en sedimentos y rocas sedimentarias: aplicaciones como indicador de procesos geoquimicos/Distribuicao de germanio em sedimentos e rochas sedimentarias: aplicacoes como indicador de processos geoquimicos.
December 1, 2006... SUMMARY Germanium and silicon have identical outer electron structures and have quite similar geochemical characteristics. Due to this, most Ge in the earth's crust is dispersed through silicate minerals in amounts up to a few parts per...

Composition of stingless bee honey: setting quality standards/Composicion de la miel de abejas sin aguijon: estableciendo requisitos de calidad/Composicao do mel de abelhas sem ferrao: estabelecendo requisitos de qualidade.
December 1, 2006... SUMMARY Compositional data from 152 stingless bee (Meliponini) honey samples were compiled from studies since 1964, and evaluated to propose a quality standard for this product. Since stingless bee honey has a different composition than...

Comparison of two dietary markers in the determination of amino acid digestibility in some foodstuffs for growing broiler chickens.(REPORTS/COMUNICACIONES/COMUNICACOES)
December 1, 2006... SUMMARY The apparent ileal amino acid digestibility in maize, sorghum, soybean meal, maize gluten, fishmeal, meat and bone meal and wheat bran for growing broiler chickens were determined, using titanium dioxide (Ti[O.sub.2]) and chromium...

Digestibilidad del almidon en diferentes variedades de frijol (Phaseolus vulgaris L.).(REPORTS/COMUNICACIONES/COMUNICACOES)
December 1, 2006... SUMMARY The chemical composition and starch digestibility of four common bean (Phaseolus vulgaris L.) varieties were studied. Protein, content was not significantly different (p [less than or equal to] 0.05) and lipid content was low, with...

Coeficientes de correlacion dentro de hatos y efectos de diseño para seropositividad a brucelosis, diarrea viral bovina y rinotraqueitis infecciosa bovina de hatos lecheros.(REPORTS/COMUNICACIONES/COMUNICACOES)
December 1, 2006... SUMMARY Estimates of the intra-cluster correlation coefficients (ICC) or of the design effect (D) for infectious diseases could be of interest in the design of surveys and for the calculation of variance inflation factors for the...

Mercado eficiente y caminata aleatoria en la bolsa de valores de caracas.(REPORTS/COMUNICACIONES/COMUNICACOES)
December 1, 2006... SUMMARY A market is efficient when the prices of negotiated assets show all the available information and adjust completely and very fast to new information. When a market is efficient the changes in the prices of assets are unpredictable...

Litterfall and nutrient input in undisturbed and adjacent fire disturbed forests of the Gran Sabana, Southern Venezuela.(REPORTS/COMUNICACIONES/COMUNICACOES)
December 1, 2006... SUMMARY Litterfall and nutrient return were studied in a primary forest (tall forest), a slight fire-affected forest (medium forest with low abundance of charred residues) and a strong fire-affected forest (low forest with abundant burned...

Analisis de trazos de las especies mexicanas de Rhus subgenero lobadium (angiospermae: anacardiaceae).(REPORTS/COMUNICACIONES/COMUNICACOES)
December 1, 2006... SUMMARY The subgenus Lobadium of the genus Rhus contains about 25 species, distributed mainly in Mexico. The geographic distribution of these species was analyzed through a panbiogeographic approach, based on a parsimony analysis of...

Forthcoming events/Reuniones venideras/Proximas reunioes.(Calendario)(Ilustración)
December 1, 2006... REUNIONES VENIDERAS / FORTHCOMING EVENTS / PROXIMAS REUNIOES REUNION / EVENT LUGAR / LOCATION FECHA / DATE ENCUENTRO CIENTIFICO Lima, Peru 2 al 5 de enero de 2007 INTERNATIONAL 2007 DE VERANO IX...