992 resultados para Philidor, F. A. D., 1726-1794.
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Pair of photographs, 17 ½ cm x 12 cm of William Woodruff, son of Ezekiel and a 17 ½ cm x 12 cm photograph of Margaret Clement Woodruff in a folding silver frame. These photographs were described by R. Band in 1990 – description is included.
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El propósito del presente trabajo fue conocer la propiedades psicométricas de la escala CES-D en una muestra de adolescentes estudiantes de educación secundaria de la ciudad de San Juan de Pasto, para lo cual se llevó a cabo un estudio instrumental, con la participación de 790 estudiantes de seis instituciones educativas de la ciudad (cuatro oficiales y dos privadas), con una edad promedio de 13.8 años. En este estudio se encontró que la escala CES-D presenta una solución bifactorial, en la cual los Ãtems se agruparon en un factor de depresión (combinación de las escalas originales de ánimo depresivo, somático y social), mientras que los del factor original de bienestar se mantuvieron tal como en la estructura original. Asà mismo, la escala total presentó una consistencia interna de 0.89, mientras que los factores tuvieron un alfa de Cronbach de 0.9 (depresión) y 0.75 (bienestar). Adicionalmente, se halló evidencia de validez de constructo, al encontrar relaciones positivas con escalas de ideación suicida y de desesperanza, asà como relaciones negativas con escalas de apoyo social y autoestima. Finalmente, se proponen estadÃsticas descriptivas de las puntuaciones de la escala total y las subescalas. A partir de los resultados de este estudio se sugiere el uso de la escala CES-D en población adolescente.
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O presente trabalho teve como objetivo avaliar a influência da adubação da cultura do sorgo Sorghum bicolor (L.) Moench, na biologia da broca da cana-de-açúcar Diatraea saccharalis (Fabr., 1794) (Lepidoptera: Pyralidae). Para isso foi utilizado sorgo da cultivar Rubi-Asgrow, plantado em vasos utilizando-se diferentes doses de fertilizantes e mantidos em casa-de-vegetação. Os tratamentos utilizados (doses de NK) foram: N1 = 0-200 ppm; N2 = 50-200 ppm; N3 = 100-200 ppm; N4 = 200-200 ppm; N5 = 400-200 ppm; K1 = 200-0 ppm; K2 = 200-50 ppm; K3 = 200-100 ppm; K4 = 200-200 ppm; e K5 = 200-400 ppm. de modo geral, pode-se concluir que doses de 50 a 200 ppm de N promoveram o desenvolvimento normal das larvas de D. saccharalis, sendo que as menores porcentagens de dano foram verificadas nas menores doses; para o potássio, quanto maior a dose, menor foi o dano causado pelas lagartas, apesar de favorecer o desenvolvimento da mesma.
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The objective of this work was to evaluate biological aspects of Diatraea saccharalis fed on artificial diet containing different concentrations of the Sudan B Red dye and the possibility to mark the parasitoid Cotesia flavipes, when submitted to the parasitism of dyed caterpillars. For that, were added to the artificial diet four concentrations of Sudan Red B dye (100, 200, 300 and 400 ppm) and control (no dye addition). It was evaluated larval and pupal period, larval and pupal viability, longevity, sex rate, pupal weigh, eggs per female, eggs per day, number of eggs per egg mass, egg viability and embrionary period; besides same were accomplished measurements in the caterpillars (bioassay I). Caterpillars of 17 days old (30) of each treatment were removed from the tubes and exposed to the parasitism of C. flavipes (bioassay 2). The egg-pupae period, sex rate, pupal period and viability, number of females, males, total of emerged adults and longevity were evaluated. The data were submitted to the multivariate analisys methods: cluster analysis, two-way and principal component analysis. Based on analysis, it was observed that the treatment of 100 ppm was the least harmful to the biology of the sugar cane borer larvae by groping to the control and did not influence negatively its biological aspects. The concentration of 400 ppm affected negatively the biology of C. flavipes. The Sudan Red B it is ended doses marked the caterpillars and the adults, however the concentration of 100 ppm is the most suitable to dye D. saccharalis. None of the tested concentration marked adults of C. flavipes, despite to affect negatively its biology. It is unviable to increase the concentration seeking futures tests, for that dye to be harmful to the biological aspects of D. saccharalis and C. flavipes.