990 resultados para Administração direta


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This paper reports on the trajectory of knowledge in educational administration, as published by the Brazilian National Association of Educational Policy and Administration (ANPAE). It reviews four early booklets on school administration – Cadernos de Administração Escolar – published between 1961 and 1968, and selected issues of ANPAE´s journal – Revista Brasileira de Política e Administração da Educação – published between 1983 and 2000, under different categories, and analyses those classified under the concepts of administration and management. The author refers to conceptual limitations, but concedes that the publications present relevant contributions on the theoretical development of educational administration in Brazil.

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Pós-graduação em Agronomia - FEIS

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The crop demand by nitrogen varies from one crop to other as well as the amount and application time, and this nutrient can be lost by leaching, volatilization and erosion. The objective of this study was to evaluate doses, sources and times of nitrogen application in rice of high lands cropped in no till system. The work was conducted in Selviria, State of Mato Grosso do Sul, Brazil, in a soil originally under Cerrado vegetation. A randomized blocks design, with the treatments disposed in a factorial scheme 5x3x2 was used. The treatments were constituted by five nitrogen doses (0, 50, 100, 150 and 200 kg ha(-1)), three nitrogen sources (urea; ammonium sulfonitrate plus nitrification inhitor and ammonium sulfate) and two application times (at sowing or at flower bud differentiation), with four repetitions. The sources of nitrogen, as well as the application times had similar effects for most of evaluations. The N doses influenced linearly or with quadratic adjustment the plant height, N leaf content and grains yield, in the two growing seasons. The chlorophyll content and the number of ears m(-2) were affected only, in the first year. The highest yield in the growing season of 2007/08 was obtained with the dose of 149 kg ha(-1) of N. In 2008/09 growing season the increase of N doses provided increment in the grains rice yield, until the maximum dose evaluated (200 kg ha(-1) of N).

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This work has as objective understand the role of chief public relations professional in the design of strategies for an organization considering the theories of semiotics, particularly the concepts of Firstness, secondness and Thirdness defended and presented by Charles Sanders Peirce, and business administration. We will give attention to the process that the public relations of an organization sets the detection of a problem / opportunity until the moment that takes science for all individuals and is resolved / utilized in an organization. Then to better illustrate the concepts presented, it has been a case study of the performance of a public relations professional in an organization, and its importance in her career

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Zidovudine (AZT) is the drug most commonly used in AIDS treatment, isolated or in combination with other antiretroviral agents, but it has certain limitations due to its therapeutic dose-dependent haematological toxicity. In addition, it has low oral bioavailability, since it undergoes pre-systemic metabolism. The nasal route has been used as an alternative route for drug administration, because it can promote its direct absorption to blood circulation, avoiding hepatic metabolism. However, this route presents as a factor limiting the mucociliary clearance mechanisms that remove quickly the formulation of the nasal cavity. To prolong the residence time of formulations, in this direction, has been proposed the development of mucoadhesive systems. Among the various existing systems, the use of chitosan (QS), as mucoadhesive polymer, has been widely exploited in the preparation of nanoparticles (NPs). The objective of this study was to develop and characterize QS’s NPs for intranasal administration of AZT. For both NPs have been developed by ionic crosslinking of QS with sodium tripolyphosphate (TPP). These NPs were characterized by studies of particle size distribution, zeta potential, morphology, mucoadhesion tests, assessing the ability of encapsulation of the drug and permeation profile of AZT. The evaluation of AZT in the NPs was determined by UV-Vis spectroscopy. Mucoadhesion measures were made using a texture analyzer, using a mucin disk and porcine mucous membrane , and permeation assay were conducted using porcine nasal mucous membrane adapted to the Franz cell. These results suggest that the systems in hand have great potential for nasal AZT administration

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The aims of this work are to analyze the direct solar radiation pressure torque (TPRS) in the rotational motion of spin-stabilized artificial satellites, to numerically implement these solutions and to compare the results with real data of the Brazilian Satellite Data Collection – SCD1 and SCD2, supplied by INPE. The mathematical model for this torque is determined for a cylindrical satellite, and the components of this torque are determined in a fixed system in the satellite. An analytical solution for the spin motion equations is proposed, in which TPRSD does not affect the spin velocity of the satellite. Two approaches are adopted in the numerical implementation of the developed theory: the first one considers the proposed theory and the second introduces a variation in the spin velocity based on its real variation. The results obtained indicate that the solar radiation pressure torque has little influence in the right ascension and declination axis of rotation due to the small dimension of the satellite and altitude in which it is found. To better validate the application of the presented theory, the angular deviation of the spin axis and solar aspect angle were also analyzed. The comparison of the results of the approaches conducted with real data show good precision in the theory, which can be applied in the prediction of the rotational motion of the spin-stabilized artificial satellites, when others external torques are considered besides the direct solar radiation pressure torque

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Inflammatory bowel disease (IBD) is a chronic and relapsing disease caused by exaggerated response of the immune system. It represents a significant health problem by limiting the quality of life and being the main risk factor for colorectal cancer. Despite of its importance, the high worldwide incidence and being the object of research for several decades, the etiology remains unknown. Studies indicates an interaction between genetic and environmental factors which together with the intestinal microbiota, leads to an uncontrolled immune response. One of the aggravating environmental factors often discussed is stress, as the daily life of the population in general is increasingly rushed. In order to demonstrate the influence of stress on IBD, this study aimed to standardize an experimental model of colitis induced by instillation of a trinitrobenzene sulfonic acid (TNBS) noninflammatory concentration plus exposure to stress that intensify the inflammation. Therefore, an experiment was done to determine what would be the noninflammatory concentration. In this step, four different concentrations of TNBS (1, 6, 12.5 or 40mg/ml) were tested and the lowest concentration capable of inducing a noninflammatory response in the gut was defined as 1 mg/ml. Then, a second experiment was performed which induced colitis and exposed the animals to restraint stress. The results, however, showed that this stimulus was not enough to exacerbate the damage caused by the 1 mg/ml concentration of TNBS in the colon. With some changes in the protocol, the third experiment associated cold and restraint, as well as changes on the day of euthanasia, which occurred immediately after the stress session. The results of myeloperoxidase activity measurement were unexpected due to the noninflammatory concentration of TNBS caused an intestinal inflammation similar to the concentration of 40 mg/ml. However, the results of glutathione quantification and the corticosterone ...

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The theme approached relates contemporaneous organizational competitive scenario to draw parallels between the organizational structure, Knowledge Management and Public Relations. Many aspects are complementary and can be grouped, enabling the idea of verifying the possibility of a Public Relations work like a manager of Knowledge Management. The objective of this study focuses in analyzing the administration ways of the organizational environment to verify the best kind of structure for the competitive development pattern, then we sought the meaning of Knowledge Management and their results to draw a parallel between the image of the Knowledge Management process manager and the Public Relations professional. The methodology chosen was bibliographic research, by which we noticed the theme relevance, the proposal validity and build a convergence between the skills of a person responsible for managing processes in Knowledge Management and the capabilities of a Public Relations professional. This way adopts a human feature to the managing process, respecting the technical-informational scenario of this area

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Haloperidol is a dopamine receptor antagonist used to treat schizophrenia. When systemically administered in rodents, haloperidol induces catalepsy, a state of immobility very similar to that seen in Parkinson's disease. It is known that many of Parkinson's disease symptoms are dependent on the emotional state since patients are still able to respond to external triggers such as loud noise or visual signaling. Recent data highlighted the importance of glutamatergic neurotransmission in the inferior colliculus (IC) on the cataleptic state induced by haloperidol in rats. Given the importance of IC in the brain aversion system and its connections to motor pathways, and based on the clinical reports of the emotional influence on the motor aspect of Parkinson's disease, the objective of the present study was to evaluate the emotional aspect related to catalepsy induced by intraperitoneal administration of haloperidol. To this end, we analysed ultrasonic vocalizations (UVs) of 22 kHz (indicative of aversion) in rats during the tests of catalepsy, open field and contextual conditioned fear. Systemic administration of haloperidol affected the motor activity, inducing catalepsy and decreasing exploratory activity in the open field. There were no UVs of 22 kHz resulting from treatment with haloperidol in catalepsy or open field tests. In the contextual conditioned fear test, haloperidol increased freezing when administered before the test, but decreased freezing on test day when administered before training. In this same test, haloperidol decreased the UVs on the day it was administered (training or test). The catalepsy induced by systemic administration of haloperidol seems to have also affected the motor aspect of UVs. In this way, it was not possible to clarify the existence of an aversive emotional state associated haloperidol induced catalepsy

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A Síndrome da Imunodeficiência Adquirida (AIDS) é uma doença causada pelo vírus da imunodeficiência humana (HIV) e acomete milhões de indivíduos pelo mundo todo. Para seu tratamento, utilizam-se antirretrovirais em associação ou isoladamente, e um dos mais utilizados é a zidovudina, 3’-azido-3’-desoxitimidina (AZT). Porém, sua baixa biodisponibilidade causada pela elevada taxa de metabolização hepática e baixa capacidade de permeação através das membranas biológicas, resulta na necessidade de administração de elevadas doses do fármaco, várias vezes ao dia, o que acaba gerando níveis plasmáticos tóxicos e, consequentemente, efeitos colaterais graves e desconforto ao paciente. Sendo assim existe a necessidade de uma otimização das formulações orais contendo AZT. Os sistemas de liberação de fármacos com propriedades mucoadesivas podem ser uma alternativa para melhorar as propriedades biofarmacêuticas, pois permitem o contato íntimo do fármaco com a mucosa intestinal e por um tempo prolongado, o que pode melhorar a biodisponibilidade de determinados fármacos, como o AZT. As dispersões sólidas (DS) são um tipo de sistema de liberação de fármaco que visam melhorar a biodisponibilidade de fármacos com baixa biodisponibilidade. Para desenvolvimento destes sistemas, vários materiais poliméricos podem ser utilizados, dentre eles o ftalato de hidroxipropil metilcelulose (HPMCP), com propriedade gastrorresistentes e mucoadesiva e o glicolato sódico de amido (GSA), que é um polímero intumescível e mucoadesivo. No desenvolvimento do trabalho as dispersões foram preparadas a partir da técnica de evaporação do solvente, contendo AZT, GSA e HPMCP nas proporções 1:5:7,5, 1:5:10 e 1:5:15, respectivamente, sendo obtidas com êxito a partir da técnica escolhida. A análise granulométrica e as fotomicrografias das amostras demonstraram uma redução no tamanho das partículas. A análise da mucoadesão ...