388 resultados para 1178
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Pós-graduação em Agronomia (Proteção de Plantas) - FCA
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La baja carga tributaria, su elevada dependencia de los ingresos petroleros y su escaso efecto para reducir la concentración del ingreso son deficiencias fundamentales que limitan el desarrollo económico de México. El propósito del presente trabajo es examinar la evolución de largo plazo de los ingresos tributarios en México e identificar las causas detrás de su marcada estabilidad y debilidad. Para ello, en el trabajo se aborda el análisis de los elementos principales que han determinado la carga tributaria en el país y, a la vez, se hace un recuento crítico de algunos de los principales intentos y propuestas para instrumentar una reforma fiscal profunda. Dicho diagnóstico cierra con una sección de conclusiones en las que se apunta a la necesidad de hacer una reforma fiscal, que vaya mucho más allá de la que se puso en marcha en 2013, a fin de dotarlo de mayor equidad, eficiencia y capacidad recaudatoria que tanto urgen al desarrollo del país.
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OBJETIVO: Os ferimentos penetrantes com comprometimento simultâneo das cavidades torácica e abdominal (FTA), além da dificuldade diagnóstica, merecem especial atenção em relação à conduta adotada para o tratamento do espaço pleural. O objetivo do presente estudo foi identificar os principais fatores relacionados à incidência de empiema pleural em pacientes com ferimentos penetrantes localizados na transição toracoabdominal. MÉTODO: Utilizando-se o modelo estatístico de regressão logística múltipla, os autores analisaram 110 pacientes com ferida toracoabdominal penetrante, submetidos à drenagem pleural fechada e laparotomia. A complicação empiema pleural foi estudada quanto à incidência e fatores envolvidos. Considerou-se o nível alfa igual a 0,05. RESULTADOS: Do total, 91 (82,7%) pacientes eram do sexo masculino e 19 (17,3%) do feminino. A faixa etária situou-se entre 13 e 63 anos. Os FTA foram causados por projétil de arma de fogo em 60 casos (54,5%) e por arma branca em 50 casos (45,5%). O empiema pleural incidiu em quatro (3,6%) dos pacientes estudados. Na análise estatística a incidência de empiema pleural esteve relacionada com: lesão de víscera oca (OR=3,1386, p=0.4005); lesão do lado esquerdo do diafragma (OR= 12,98, p=0,1178) e choque hemorrágico à admissão (OR=23,9639, p=0,0250). CONCLUSÕES: A chance da ocorrência de empiema pleural foi cerca de três vezes maior em pacientes com lesão de víscera oca e, de 13 vezes se a esta lesão estava associada à lesão do lado esquerdo do diafragma; aumentando para 24 vezes se estes pacientes apresentavam, concomitantemente, estado de choque hemorrágico à admissão.
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Este artigo analisa o conto Romance Negro, de Rubem Fonseca, a partir do duplo sentido que o autor dá à expressão roman noir, a qual remete, em literatura, seja ao gênero que se desenvolveu no pré-romantismo inglês da segunda metade do século XVIII, seja a um tipo de romance policial americano do século XX chamado de noir. Aproveitando essa dualidade do termo, o autor cria uma narrativa híbrida ao mesclar dois gêneros: o romance gótico e a narrativa policial.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Herbal medicines have been widely used around the world since ancient times. The advancement of phytochemical and phytopharmacological sciences has enabled elucidation of the composition and biological activities of several medicinal plant products. The effectiveness of many species of medicinal plants depends on the supply of active compounds. Most of the biologically active constituents of extracts, such as flavonoids, tannins, and terpenoids, are highly soluble in water, but have low absorption, because they are unable to cross the lipid membranes of the cells, have excessively high molecular size, or are poorly absorbed, resulting in loss of bioavailability and efficacy. Some extracts are not used clinically because of these obstacles. It has been widely proposed to combine herbal medicine with nanotechnology, because nano-structured systems might be able to potentiate the action of plant extracts, reducing the required dose and side effects, and improving activity. Nanosystems can deliver the active constituent at a sufficient concentration during the entire treatment period, directing it to the desired site of action. Conventional treatments do not meet these requirements. The purpose of this study is to review nanotechnology- based drug delivery systems and herbal medicines.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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The objective of this work was to evaluate the effect of acaricide applications and pruning of symptomatic branches in citrus leprosis management in Brazil. It was conducted in an orange plantation of the 'Pera' variety, grafted onto the 'Cleopatra' tangerine, in two seasons (2006-2007 and 2007-2008). The experimental design was randomized blocks in a factorial scheme consisting of the following factors: (A) acaricide, in three levels: spirodiclofen and cyhexatin applied in rotation, lime sulphur; no acaricides; (B) pruning to remove branches that showed symptoms of leprosis, with two levels: with pruning, without pruning. We carried out periodic assessments of Brevipalpus phoenicis (Geijskes) populations (vector of the leprosis virus), leprosis incidence and severity, fruit yield, and the economic feasibility of the applied strategies. Based on the results, we concluded that spirodiclofen and cyhexatin were more effective than lime sulphur in B. phoenicis control. Control with lime sulphur required more applications than spirodiclofen and cyhexatin in rotation, making it more expensive. Pruning of symptomatic branches used in isolation was not sufficiently effective to control leprosis and significantly increased control costs. Profits were higher when the control involved sprayings of spirodiclofen and cyhexatin in alternation, with or without pruning.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Objective: The main purpose of the investigation reported here was to analyze the effect of resistance training (RT) performed at different weekly frequencies on flexibility in older women.Participants and methods: Fifty-three older women (>= 60 years old) were randomly assigned to perform RT either two (n= 28; group "G2x"), or three (n= 25; group "G3x") times per week. The RT program comprised eight exercises in which the participants performed one set of 10-15 repetitions maximum for a period of 12 weeks. Anthropometric, body-composition, and flexibility measurements were made at baseline and post-study. The flexibility measurements were obtained by a fleximeter.Results: A significant group-by-time interaction (P<0.01) was observed for frontal hip flexion, in which G3x showed a higher increase than G2x (+12.8% and +3.0%, respectively). Both groups increased flexibility in cervical extension (G2x=+19.1%, G3x=+20.0%), right hip flexion (G2x=+14.6%, G3x=+15.9%), and left hip flexion (G2x=+25.7%, G3x=+19.2%), with no statistical difference between groups. No statistically significant differences were noted for the increase in skeletal muscle mass between training three versus two times a week (+7.4% vs +4.4%, respectively).Conclusion: Twelve weeks of RT improves the flexibility of different joint movements in older women, and the higher frequency induces greater increases for frontal hip flexion.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)