858 resultados para pre-determined conditions
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This study investigated how the types of confidence based on competence and good will act in the formation and maintenance of cooperation relationships between the Camanor and its partners (Aquatec, Purina, Caçuá, Uvifrios and Malta / Cleyton). It used organizational approaches on networks based primarily on studies of Powell (1987, 1990), Das and Teng (2000, 2001), Child (2001) and Contractor and Lorange (2004) which have described the advantages that cooperative relationships can provide, as well as their limits as alternative governance structures. Confidence has been considered an important factor affecting the actions and development of organizations involved in networks or in strategic alliances (ZAHEER; HARRIS, 2006) and is the most appropriate control mechanism in these situations (SYDOW, 1998). Confidence is seen from two different approaches: the economic and the sociological (ZAHEER; HARRIS, 2006). To facilitate the understanding of confidence some typologies have been created, as proposed by Barney and Hansen (1994), Lane (1998), Das and Teng (2000), Child (2001) and Wever, Martens and Vandenbempt (2005). This study made use of the case study as proposition of Yin (2005). Semi-structured interviews were held with pre-determined routes, in a single stage performed in early 2008. The research subjects were owners and / or responsible for Camanor and its business partners (Aquatec, Purina, Caçuá, Uvifrios and Malta / Cleyton). Also secondary data were collected in several sites related to the industry and enterprises studied, in addition to data collected by previous studies conducted by CARCINEREDES (2006). The primary data were analyzed using the analysing technique of the content proposed by Bardin (1994). Regarding the secondary data, they were qualitatively analyzed according to documentary analysis technique (BARDIN, 1994). Thus, through the data collected, could be concluded that although there is confidence based on good faith in relationships(UZZI, 1998; OF; TENG, 2001), their presence does not determine the formation and / or maintenance of a partnership, serves only in order to facilitate the relationship, making them more flexible. The confidence based on competence (DAS; TENG, 2001) influenced the formation and maintenance of relations studied. Because whether or not to form a relationship with another organization it is used the perception of the partner acts, namely the reputation (image) as decision basis. And it is through the verification of the performance of the partner activities that will determine the continuation of the partnership
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Neste trabalho objetivou-se estudar o desempenho e a eficiência biológica de 48 bubalinos (16 Murrah - MUR, 16 Jafarabadi - JAF e 16 Mediterrâneo - MED) com média de 18 meses de idade e de peso vivo inicial de 330 kg terminados em confinamento. Quatro animais de cada grupo genético foram designados por sorteio para o abate inicial e serviram de referência para o estudo dos pesos iniciais de corpo vazio e de carcaça. Os 12 animais restantes de cada grupo genético foram divididos aleatoriamente em três subgrupos de quatro animais e submetidos aos seguintes tratamentos: Maturidade 1 (400 kg PV ao abate); Maturidade 2 (450 kg PV ao abate); Maturidade 3 (500 kg PV ao abate). Foi fornecida uma ração única, ad libitum, para todos os animais, composta por 50% de feno de coastcross na MS e 50% de concentrado à base de fubá de milho, uréia e farelo de soja, devidamente suplementado com minerais. Após os abates pré-fixados, determinou-se o peso corporal vazio (PCVZ) dos animais, por meio do somatório das partes integrantes do corpo. Os consumos médios diários de MS e MO não diferiram entre grupos genéticos, embora animais JAF tenham apresentado os maiores valores numéricos. Animais MUR, JAF e MED não diferiram quanto aos ganhos de peso corporal vazio e de carcaça. Não houve diferenças quanto à eficiência biológica (ganho de peso corporal vazio e ganho de carcaça por unidade de energia metabolizável ingerida) entre os grupos genéticos, embora animais Murrah tenham apresentado os maiores valores. Bubalinos abatidos aos 400 e 450 kg apresentaram melhor eficiência de ganho de peso corporal vazio e ganho de carcaça que os abatidos aos 500 kg.
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This article presents a detailed study of the application of different additive manufacturing technologies (sintering process, three-dimensional printing, extrusion and stereolithographic process), in the design process of a complex geometry model and its moving parts. The fabrication sequence was evaluated in terms of pre-processing conditions (model generation and model STL SLI), generation strategy and physical model post-processing operations. Dimensional verification of the obtained models was undertook by projecting structured light (optical scan), a relatively new technology of main importance for metrology and reverse engineering. Studies were done in certain manufacturing time and production costs, which allowed the definition of an more comprehensive evaluation matrix of additive technologies.
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Os resíduos deixados sobre o solo por ocasião da colheita mecanizada da cana-de-açúcar podem constituir-se em uma barreira física para a ação dos herbicidas no controle de plantas daninhas, quando aplicados em pré-emergência destas plantas sobre a palha da cana. em virtude disso, o presente trabalho teve por objetivos analisar e quantificar a interferência dessa camada de palha sobre o solo na ação dos herbicidas imazapic e imazapic + pendimethalin no controle de plantas daninhas em áreas onde a cana-de-açúcar foi colhida mecanicamente sem a queima da palhada previamente à colheita. Foram realizados dois ensaios simultâneos: um com a retirada da palha dois dias após a aplicação dos herbicidas e o outro com a manutenção desta, ambos conduzidos em casa de vegetação. O imazapic isolado foi aplicado nas dosagens de 0, 122,5 e 147 g i.a.ha-1 e em mistura com pendimethalin na dosagem de 75 + 1500 g i.a.ha-1, com simulação de chuvas nas intensidades de 30, 60 e 90 mm. Após análise dos resultados de biomassa seca, altura e número de folhas das plantas de Sorghum bicolor e Cyperus rotundus, além de nota visual e biomassa seca de Panicum maximum, Brachiaria plantaginea, Digitaria horizontalis, Amaranthus viridis, Ipomoea grandifolia e Brachiaria decumbens, constatou-se eficiência proporcional dos herbicidas à dosagem utilizada, independentemente da presença da palha, à exceção de Ipomoea grandifolia e Brachiaria decumbens, além de haver menor controle nos tratamentos submetidos à chuva de 90 mm. Esses resultados indicam boas perspectivas quanto à aplicação destes herbicidas em áreas de colheita mecanizada de cana-de-açúcar sem queima, para controle de plantas daninhas em condições de pré-emergência.
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Objetivou-se com este trabalho avaliar o controle em pré-emergência de Brachiaria decumbens, Digitaria horizontalis e Panicum maximum pelo herbicida S-metolachlor aplicado em pré-emergência em área de cana-de-açúcar colhida mecanicamente sem queima prévia das plantas, com e sem palha sobre o solo. O delineamento experimental foi o de blocos ao acaso, com quatro repetições, em esquema de parcela subdividida 7 x 2. Nas parcelas, foram estudados cinco tratamentos de herbicidas (S-metolachlor a 1,44, 1,92 e 2,40 kg ha-1; clomazone a 1,20 kg ha-1; e isoxaflutole a 0,188 kg ha-1) e duas testemunhas sem aplicação. Nas subparcelas, foi avaliada a manutenção ou não da palha de cana na superfície do solo. A eficácia do herbicida S-metolachlor não foi prejudicada pela presença de 14 ou 20 t ha-1 de palha de cana sobre o solo. Com a manutenção da palha, a dosagem de S-metolachlor para o controle adequado das plantas daninhas foi de 1,44kgha-1. No ambiente sem palha, o S-metolachlor controlou B. decumbens, D. horizontalis e P. maximum nas dosagens de 1.92, 1.44 e 1.92kgha-1, respectivamente. Nas duas condições de palha, os herbicidas clomazone e isoxaflutole foram eficazes para as espécies estudadas. O S-metolachlor não causou nenhum sintoma visível de intoxicação à cana-de-açúcar. O clomazone e o isoxaflutole ocasionaram injúrias visuais às plantas de cana. Os herbicidas estudados não afetaram o número de colmos viáveis por m², a altura e o diâmetro de colmos.
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It is about a study of an exploratory/descriptive type with a qualitative approach whose aim was to analyze the actuation of nursing technicians in Family Health Strategy (FHS), taking into consideration the defined attributions by the Ministry of Health (MH). Thus, it was sought to identify what activities they carry out, the difficulties encountered, what contributed to their professional performance, and what vision they have about FHS and about themselves in the context. Based on the assumption that the practice of Nursing Technician is not still geared to completeness and that the developed actions by this professional are predominantly individual and curative. We know that FHS proposes the work organization as a team, with territory definition, prioritization of promotion actions, protection and recovery of the individual/family/community health, choosing as a central point the establishment of entails between the professionals and the same ones. However, the team work pass through interdisciplinary, tying and competence, starting making the difference in the way of thinking and doing health. To the accomplishment of this study were interviewed twenty one Nursing Technicians of Family Health Units from Sanitário Oeste district in Natal-RN, using semistructured instrument. From the analysis, three empiric categories emerged: starting from the first, The reality of a dream: what FHS is for the Nursing Technician, we obtained two classifications: one inherent to the own conception they have about FHS, nominated The realization of a dream in the possible and another that corresponds to what they think about FHS, while project that doesn't take place fully, denominated of The beauty of a dream that doesn't take place. The second category was The FHS: a dream built in the daily of Nursing Technician treats of the day by day information of that professional; the activities they perform and how those are established. This created three other items, to know: The role of a Nursing Technician: a project that became routine; The pre-determined role of a Nursing Technician: the scale as factor of (non-)autonomy; and, Knowledge about the practice in FHS: challenges that are presented to the role of Nursing Technician. The third category, denominated of Charms and disenchantment in the beginning of a new practice, it is related to the facilities or difficulties in professional's actuation and how he sees himself in the context. From it emerged the "flowers" and the "thorns" found on the construction of a dream, which gave this study the title. The results indicate that, being considered the characteristics of researched professional category, it becomes fundamental the resizing of labor relations in FHS, being imperative that new glances is conducted, so that the way as those Nursing Technicians interacts with the families can become compatible, together with the team, as well as to return the attention for their possibilities and limits in face of the work process in FHS. Besides, it is necessary changes in the professional formation, so that it can guarantee the conceptual bases in the construction of new practices, seeking to answer to the model of current attention.
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Several initiatives, including research and development, increasing stakeholders' awareness and application of legislation and recommendation, have been carried out in Latin America to promote animal welfare and meat quality. Most activities focused on the impact of pre-slaughter conditions (facilities, equipment and handling procedures) on animal welfare and meat quality. The results are encouraging; data from Brazil, Chile and Uruguay showed that the application of the improved pre-slaughter handling practices reduced aggressive handling and the incidence of bruised carcasses at slaughter in cattle and pigs. These outcomes stimulated some to apply animal welfare concepts in livestock handling within the meat production chain as shown by the increasing demand for personnel training on the best. To attend this demand is important to expand local studies on farm animal welfare and to set up (or maintain) an efficient system for knowledge transfer to all stakeholders in the Latin America meat production chains. However, it is clear that to promote the long-term progress in this field is important to deliver practical solutions, assuring that they match the technical and financial conditions of those who are the target of training programs. (C) 2012 Elsevier Ltd. All rights reserved.
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Este trabalho constou de quatro estudos que foram realizados em casa de vegetação, nos quais se avaliou a seletividade de diferentes herbicidas, aplicados em pré-emergência, sobre algumas gramíneas forrageiras tropicais: Brachiaria decumbens, Brachiaria brizantha cv. Marandu e Panicum maximum cultivares Tanzânia e Mombaça. Os herbicidas e as doses utilizadas, em g ha-1, para cada estudo foram: alachlor - 1.680 e 3.360, metolachlor - 1.200 e 2.400, diuron - 800 e 1.600, imazaquin - 75 e 150, imazapyr - 250 e 500, imazethapyr - 50 e 100, clomazone - 450 e 900, flumetsulam - 70 e 140, ametryn - 625 e 1.250, metribuzin - 525 e 1.050 e trifluralin - 900 e 1.800, além de uma testemunha sem aplicação de herbicidas. Utilizou-se o delineamento experimental inteiramente casualizado, com seis repetições. O consumo de calda de aplicação foi de 180 L ha-1,e a barra de aplicação continha quatro bicos de jato plano tipo 'Teejet' 110.02, espaçados de 0,50 m. Avaliou-se visualmente a intoxicação das plantas através de uma escala percentual de notas e, no final dos estudos, a altura e o peso de matéria seca de plantas. Para P. maximum cv. Mombaça, apenas os herbicidas imazaquin (75 g ha-1), imazethapyr e flumetsulam, em ambas as doses testadas, foram seletivos. Para P. maximum cv. Tanzânia, nenhum dos herbicidas testados foi totalmente seletivo. em relação a B. decumbens, os herbicidas imazaquin e imazethapyr, em ambas as doses, e ametryn (625 g ha¹) foram seletivos. No caso de B. brizantha, os herbicidas diuron (800 g ha¹), ametryn, imazaquin, imazethapyr e flumetsulam, em ambas as doses, apresentaram-se seletivos.
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At the cashew nut processing industry it is often the generation of wastewaters containing high content of toxic organic compounds. The presence of these compounds is due mainly to the so called liquid of the cashew nut (CNSL). CNSL, as it is commercially known in Brazil, is the liquid of the cashew nut. It looks like an oil with dark brown color, viscous and presents a high toxicity index due to the chemical composition, i.e. phenol compounds, such as anacardic acid, cardol, 2-methyl cardol and monophenol (cardanol). These compounds are bio resistant to the conventional treatments. Furthermore, the corresponding wastewaters present high content of TOC (total organic carbon). Therefore due to the high degree of toxicity it is very important to study and develop treatments of these wastewaters before discharge to the environmental. This research aims to decompose these compounds using advanced oxidative processes (AOP) based on the photo-Fenton system. The advantage of this system is the fast and non-selective oxidation promoted by the hydroxyl radicals (●OH), that is under determined conditions can totally convert the organic pollutants to CO2 and H2O. In order to evaluate the decomposition of the organic charge system samples of the real wastewater od a processing cashew nut industry were taken. This industry was located at the country of the state of Rio Grande do Norte. The experiments were carried out with a photochemical annular reactor equipped with UV (ultra violet) lamp. Based on preliminary experiments, a Doehlert experimental design was defined to optimize the concentrations of H2O2 and Fe(II) with a total of 13 runs. The experimental conditions were set to pH equal to 3 and temperature of 30°C. The power of the lamps applied was 80W, 125W and 250W. To evaluate the decomposition rate measures of the TOC were accomplished during 4 hours of experiment. According to the results, the organic removal obtained in terms of TOC was 80% minimum and 95% maximum. Furthermore, it was gotten a minimum time of 49 minutes for the removal of 30% of the initial TOC. Based on the obtained experimental results, the photo-Fenton system presents a very satisfactory performance as a complementary treatment of the wastewater studied
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O objetivo do experimento foi avaliar o melhor sentido de caminhamento de um pulverizador de barras, montado em três pontos no trator, nas culturas de soja e de feijão. As pulverizações foram orientadas no sentido longitudinal às linhas de semeadura, transversal às linhas de semeadura e no mesmo sentido das linhas de semeadura com os pneus percorrendo locais pré-definidos onde não houve a distribuição de sementes (tramlines). Foram avaliados os componentes de produtividade. Pelos resultados, pode-se observar que não houve diferença significativa quanto aos componentes de produtividade avaliados na cultura da soja quando se variou o sentido da pulverização. Na cultura do feijoeiro, a pulverização no sentido longitudinal apresentou maior produtividade.
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The concept of formativity, coined by Luigi Pareyson, is a key to the development of countless contemporary aesthetic studies. The aim of this dissertation is to present a deep understanding of the notion of Formativity and Interpretation, as evidenciated by the title Formativity and Interpretation: the aesthetical philosophy of Luigi Pareyson. The work Aesthetics - Theory of Formativity, first published in 1954, is considered a mark in the rebirth of aesthetics. In this dissertation, the concept of Formativity is examined as a component applicable to every human action, and not limited to pre-determined practices, nor referred to the application of preexisting. I ve performed an investigation of the triple concept of doing-inventing-interpreting, which simultaneously grounds Formativity. In the first section, Pareyson s Aesthetical Propaedeutic is presented; in the second, the Theory of Formativity: the aesthetical character of the whole human experience is analysed; and in the third chapter, The Aesthetical of Form and the Metaphysics of Figuration is related to the formativity character of the knowledge. Through this analysis, I ve intended to evidence how human operability can be understood as search and trial, figuration and invention, in the search for success. In this sense, this thesis seeks to present an interpretation of the idea of work-form, speculating the inexorability of invention and interpretation in an attempt to establish a new bottom line for the studies Pareyson s Aesthetics in Brazil
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The determination of a specific orbit and the procedure to calculate orbital maneuvers of artificial satellites are problems of extreme importance in the study of orbital mechanics. Therefore, the transferring problem of a spaceship from one orbit to another, and the attention due to this subject has in increased during the last years. Many applications can be found in several space activities, for example, to put a satellite in a geostationary orbit, to change the position of a spaceship, to maintain a specific satellite's orbit, in the design of an interplanetary mission, and others. The Brazilian Satellite SCD-1 (Data Collecting Satellite) will be used as example in this paper. It is the first satellite developed entirely in Brazil, and it remains in operation to this date. SCD-1 was designed, developed, built, and tested by Brazilian scientists, engineers, and technicians working at INPE (National Institute for Space Research, and in Brazilian Industries. During the lifetime, it might be necessary do some complementary maneuvers, being this one either an orbital transferring, or just to make periodical corrections. The purpose of transferring problem is to change the position, velocity and the satellite's mass to a new pre determined state. This transfer can be totally linked (in the case of "Rendezvous") or partially free (free time, free final velocity, etc). In the global case, the direction, the orientation and the magnitude of the thrust to be applied must be chosen, respecting the equipment's limit. In order to make this transferring, either sub-optimal or optimal maneuvers may be used. In the present study, only the sub-optimal will be shown. Hence, this method will simplify the direction of thrust application, to allow a fast calculation that may be used in real time, with a very fast processing. The thrust application direction to be applied will be assumed small and constant, and the purpose of this paper is to find the time interval that the thrust is applied. This paper is basically divided into three parts: during the first one the sub-optimal maneuver is explained and detailed, the second presents the Satellite SCD-1, and finally the last part shows the results using the sub-optimal maneuver applied to the Brazilian Satellite.
Glass transition temperature of hard chairside reline materials after post-polymerisation treatments
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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O trabalho teve como objetivo avaliar a ação dos herbicidas imazethapyr e chlorimuron-ethyl em aplicações de pré-semeadura da cultura da soja, visando o controle das plantas daninhas presentes antes da semeadura e a redução na emergência de plantas daninhas durante o ciclo da cultura. O experimento foi conduzido a campo, em área de produção de soja em sistema de plantio direto. O delineamento experimental utilizado foi o de blocos casualizados, com quatro repetições, em esquema fatorial (4 x 4 + 1), sendo quatro tratamentos herbicidas [glyphosate (1,62 kg ha-1); glyphosate (1,62 kg ha-1) + imazethapyr (100 g ha-1); glyphosate (1,62 kg ha-1) + chlorimuron-ethyl (10 g ha-1); glyphosate (1,62 kg ha-1) + chlorimuron-ethyl (20 g ha-1)] e quatro intervalos entre a aplicação dos herbicidas e a semeadura da soja (0, 1, 3 e 7 dias), mais uma testemunha não-dessecada. A adição dos herbicidas imazethapyr (100 g ha¹) e chlorimuron-ethyl (10 ou 20 g ha-1) junto ao glyphosate não melhorou o controle e também não diminuiu a rebrota posterior das plantas daninhas Digitaria insularis, Tridax procumbens e Leptochloa filiformis. Três dias antes da semeadura da soja foi o intervalo mínimo para que o controle dessas três espécies de plantas daninhas não fosse prejudicado pela operação de semeadura mecânica. Constatou-se que os tratamentos herbicidas não afetaram o número de plantas emergidas das espécies Sida santaremnensis, Digitaria insularis, Eleusine indica, Chamaesyce hirta, Bidens pilosa e Senna obtusifolia. Apenas para a espécie Althernantela tenella foi verificado que a adição de imazethapyr ou de chlorimuron-ethyl junto ao glyphosate reduziu a emergência dessa planta daninha na área, mostrando eficiência em pré-emergência. Todos os tratamentos herbicidas aplicados em pré-semeadura proporcionaram maior produtividade da cultura da soja em relação à testemunha não-dessecada, mas o incremento dos herbicidas imazethapyr e chlorimuron-ethyl ao glyphosate não resultou em aumento de produtividade da soja.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)