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Search Results: 1 - 10 of 230944 matches for " José Alves de; "
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índios: "m os e pés dos senhores" da Amaz nia colonial
José Alves de Souza Junior
Fronteras de la Historia , 2011,
Abstract: Este artículo discute la importancia de la fuerza del trabajo indígena en la Amazonia portuguesa colonial y cómo su control fue objeto de una intensa disputa que incluyó a jesuitas, colonos y autoridades coloniales. Esas querellas se materializaron no solamente en un juego de influencias en la Corte, cuyo objetivo era obtener una legislación indigenista favorable a los diversos intereses en cuestión, sino también en constantes conflictos que protagonizaron, principalmente, jesuitas y colonos. En ese proceso, la oposición de los religiosos, la legislación indigenista y la tenaz resistencia de los indios a su utilización como mano de obra por los colonos, junto a los altos índices de mortalidad por las epidemias, disminuyeron en los portugueses la resistencia al uso de esclavos africanos.
Nomes próprios, melhoramento e degrada o em Uma fenda na muralha
Alves, José édil de Lima
Letras de Hoje , 2007,
Abstract: N o possui resumo
Mitre e a edifica o de um patrim nio historiográfico argentino
José Alves de Freitas Neto
História da Historiografia , 2011,
Abstract: O artigo analisa o trabalho histórico de Bartolomé Mitre na Argentina da segunda metade do século XX. S o apresentadas as polêmicas em torno da escrita da história, o debate em torno do rigor erudito, a composi o do acervo documental e alguns temas enunciados em suasobras principais, a Historia de Belgrano y de la independencia argentina (1887) e a Historia de San Martin y de la emancipación sudamericana (1888). Nesse processo, busca-se abordar as rela esentre política e história, assim como elementos que justificam a presen a de Mitre no centro do debate historiográfico argentino, as contradi es e paradoxos que o historiador sinaliza, assim como sua condi o de patrim nio da cultura historiográfica platina.
Membrana amniótica preservada em glicerina no reparo de feridas cutaneas de membros locomotores de eqüinos
Oliveira, Valdemir Alves de;Alvarenga, José de;
Ciência Rural , 1998, DOI: 10.1590/S0103-84781998000400014
Abstract: in the present experimental study, the use of the equine amniotic membrane preserved in glvcerol 98%, at room temperature, in wounds with secound intention healing of equine limbs were evaluated. surgical wounds of the size of 9.6cm2 were made on the fetiock joint, medial aspect of the proximal third of the metacarpus and lateral aspect of the medium third of the metatarsus ofboth limbs offive adult horses, making a total of thirty wounds. two experimental groups were made with fifteen wounds in each group, where one of these groups was treated with amniotic membrane, and the other, the control group, treated only with a damp gauze changed every 48 hours. in all the wounds the procedure was to evaluate the measurement of the área, degree of secretion, development of exuberant granulation tissue and the complete time of epitheliazation. bacteriologic and histopatologic exams were made in a sample of the treated and contrai groups. the biochemical determination of proteins and the identification of fibroblastic growth factor were realized in the amnionic membrane. in all the treated wounds were observed shorter healing time, less formation of exuberant granulation tissue, smaller incidence of pathogenic bacterias and a smaller increase of the wound area.
Effects of Sky Conditions Measured by the Clearness Index on the Estimation of Solar Radiation Using a Digital Elevation Model  [PDF]
Marcelo de Carvalho Alves, Luciana Sanches, José de Souza Nogueira, Vanessa Augusto Mattos Silva
Atmospheric and Climate Sciences (ACS) , 2013, DOI: 10.4236/acs.2013.34064
Abstract:

This study evaluated the effects of sky conditions (measured by the clearness index, KT) on the estimation of solar radiation and its components. Solar radiation was calculated by a digital elevation model derived from the Shuttle Radar Topography Mission (SRTM). The calculated radiation was parameterized and validated with measured solar radiation from two stations inside the urban perimeter of the city of Cuiabá, Brazil, during 2006 to 2008. The measured solar radiation varied seasonally, with the highest values in December-March and the lowest in June-September. Comparisons between calculated and measured values for two sites in Cuiabá demonstrate that the model is accurate for daily Rg estimates under clear sky conditions based on Root Mean Square Error, Mean Bias Error and Willmott’s index. However, under partially cloudy and cloudy sky conditions the model was not able to provide robust estimates. Spatially, the highest values of incident Rg occurred on strands with North, Northeast and Northwest orientations and were lowest on those oriented to the South, Southeast and Southwest.

High- and Low-Rearing Rats Differ in the Brain Excitability Controlled by the Allosteric Benzodiazepine Site in the GABAA Receptor  [PDF]
Rosana Alves, José Gilberto Barbosa de Carvalho, Marco Antonio Campana Venditti
Journal of Behavioral and Brain Science (JBBS) , 2012, DOI: 10.4236/jbbs.2012.23036
Abstract: Rearing is an exploratory behavior induced by novelty, such as exposure to an open field. Stimulation of certain brain regions, including the hippocampus, induces both rearing and clonic convulsions. Brain excitability is controlled by gamma-aminobutyric acid (GABA) inhibitory neurotransmission through its ionotropic GABAA/allosteric benzodiazepine site. Drugs that decrease GABAA receptor fast inhibitory neurotransmission induce clonic convulsions and rearing when injected into the hippocampus. Therefore, individual differences in rearing behavior may be related to the susceptibility to clonic convulsions, which could involve differences in brain excitability controlled by GABAA/allosteric benzodiazepine site receptors. Adult, male Wistar rats were divided into high- (HR) and low-rearing (LR) groups based on the number of rearings in the open field test. Groups of HR and LR rats were challenged with convulsant drugs that antagonize GABA neurotransmission via different mechanisms of action (3-mercaptopropionic acid, a glutamate decarboxilase inhibitor; bicuculline, a GABAA receptor antagonist; pentylenetetrazol and picrotoxin, both GABAA receptor chloride channel blockers and DMCM, a benzodiazepine inverse agonist). The convulsant doses that induced 50% of clonic convulsions were determined for each drug. The LR rats had a higher susceptibility (a lower convulsant dose 50%) to clonic convulsions induced by DMCM than the HR rats, but there were no differences between the groups in the susceptibility to tonic convulsions induced by the same drug. There were no significant differences in the convulsant dose 50% for clonic convulsions between the groups for all other drugs injected. In another experiment, additional HR and LR rats were injected with a sedative-hypnotic dose of diazepam, which caused a significantly higher hypnotic effect (sleeping-time) in the LR rats than in the HR rats. The LR group was also shown to have a significantly lower density of [3H]-Flunitrazepam bound to the GABAA receptor in hippocampal membranes. Our data suggest that inter-individual differences in rearing are related, at least in part, to the GABA inhibitory neurotransmission controlled by the benzodiazepine allosteric site in the GABAA receptor.
A natureza e a cultura no compasso de um naturalista do século XIX: Wallace e a Amaz?nia
Alves, José Jer?nimo de Alencar;
História, Ciências, Saúde-Manguinhos , 2011, DOI: 10.1590/S0104-59702011000300010
Abstract: alfred russel wallace traveled through the amazon from 1848 to 1852. his perceptions of the region were informed by his systematized knowledge but also influenced by judgments of an ethical and aesthetic nature, as was common among naturalists. he saw the region's 'natives' as peaceful and friendly but likewise susceptible to the vices of civilization. nature afforded a privileged setting both for the activities of natural history and for aesthetic pleasures. these features helped keep the naturalist in the region, where he could thus engage in his scientific activities.
Aneurismas intracranianos múltiplos
Lynch, José Carlos;Andrade, Ricardo Alves de;
Arquivos de Neuro-Psiquiatria , 1992, DOI: 10.1590/S0004-282X1992000100004
Abstract: thirty eight patients with multiple intracranial aneurysms were studied. they correspond to 19.4% of all aneurysms treated over a twelve year period in the servidores do estado hospital. 89 aneurysms and 4 infundibuli were detected. in 71.0% of the patients, two aneurysms were found; in 18.4%, three aneurysms; and in 10.4%, 4 or 5 aneurysms were observed. twenty-seven patients were women and 11 men, ranging in age from 16 to 72 (average 47 years old). subarachnoid hemorrhage was found in 36 patients (86.8%). the operative mortality in this series was 3.5%. we concluded that patients with multiple intracranial aneurysms should have all aneurysms, that can bleed, clipped through standard micro-neurosurgery technics.
Remunera??o e características do trabalho docente no Brasil: um aporte
Alves, Thiago;Pinto, José Marcelino de Rezende;
Cadernos de Pesquisa , 2011, DOI: 10.1590/S0100-15742011000200014
Abstract: the article aims at describing some characteristics of the teaching work and at comparing the payment of teachers to the payment of other professionals with the same level of instruction. with this intention, the authors analyzed microdata from pnad and school census in 2009 through descriptive and inferential techniques. the results pointed out challenges in relation to 1. formation, due to the fact that one third of primary education teachers and 50% of childhood education teachers are not graduated; 2. working conditions, once an expressive number of teachers work in more than one school and teach a high number of students per class; and 3. payment, whereas teachers' socioeconomic level and income are inferior to other professionals' socioeconomic level and income even if the latter have equivalent or lower level of instruction than the former.
Agentes antineoplásicos biorredutíveis: uma nova alternativa para o tratamento de tumores sólidos
Oliveira, Renata Barbosa de;Alves, Ricardo José;
Química Nova , 2002, DOI: 10.1590/S0100-40422002000600015
Abstract: a problem often encountered in cancer therapy is the presence of tumor cell subpopulation that are resistant to treatment. solid tumors frequently contain hypoxic cells that are resistant to killing by ionizing radiation and also by many chemotherapeutic agents. however, these hypoxic cells can be exploited for therapy by non-toxic hypoxic-activated prodrugs. bioreductive drugs require metabolic reduction to generate cytotoxic metabolites. this process is facilitated by appropriate reductases and the lower oxygen conditions present in solid tumors. the unique presence of hypoxic cells in human tumors provides an important target for selective cancer therapy.
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