Browsing by Issue Date, starting with "2007-03-02"

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O diretor de escola, o projeto político-pedagógico e a formação de professores em uma escola municipal de ensino fundamental do interior paulista
(Universidade Federal de São Carlos, 2007-03-02)
Tessarin, Marcia Maria de Oliveira
;
Marques, Waldemar
;
https://lattes.cnpq.br/2530411307076405
The school manager as knowledge articulator, using as one of the instruments the Politic Pedagogic Project to formation of your teachers in the school daily, it is the study object of this work (dissertation). The work has as objective to proportion a reflection about of the manager function, as he can organize the school space and the times to formations, discussions and experience exchange as: H.A.C. (Time to Collective Activity), classroom and grade reunion to knowledge management and teaching formation. In the empiric plan, it searches keeping an eye on the manager, the co-coordinator and the teachers in 2005, and consequently the students of Fundamental teaching Municipal School Teacher Francisco Fernando Faria da Cunha, through of school revenue presented in reports. Limited the study of this school about of the initial delegate objectives, it decided utilization of the case study investigation that will permitted through of the interview with the observed school manager of the analysis of documents, occurrences in the school during the searching, a deepening respecting of formation places as Collective Activities Hours, reflection about four classroom and grade reunion, analyze of reports of these reunions and as result, the teacher was positioned as object and agent of your formation, having as eminence three competences: to know relating and to know relating yourself, to know organizing and to know organizing yourself, to know analyzing and to know analyzing yourself; having the school manager effectively as principal character in this process; that is; a reflexive teacher, constructing your action-reflection according the manager your action and organization in the school daily.
Estudo da oxidação de sulfetos pró-quirais com oxo diperoxo complexos de molibdênio (VI)
(Universidade Federal de São Carlos, 2007-03-02)
Simões, Bianca Rebelo Lopes
;
Cass, Quezia Bezerra
;
https://lattes.cnpq.br/9197210255594409
;
https://lattes.cnpq.br/4063776868343975
This study describes the use of oxo diperoxo molybdenum (VI) complex using 2,2-bipyridine and N,N -dioxide-2,2 -bipyridine as ligands for the oxidation of a series of aliphatic and aromatic sulfides, ketosulfides, sulfinyl acids and olefinic sulfides. The preparation of these complexes, the reactivity and the chemeoselectivity in these sulfides oxidation reactions are discussed. This work also describes the enantioselectivity results obtained for the oxidation reaction of a series of alkyl aryl prochiral sulfides using the MoO5(N,N-DMLA) chiral complex. The enantioresolution of the series of alkyl aryl sulfoxides, using chiral polysaccharide stationary phases, in multimodal elution, is also demonstrated. The reactivity of MoO5(pyridine oxide)(H2O) complex, coated and uncoated to silica gel, for the series of alkyl aryl sulfides oxidation reactions were also thoroughly evaluated for comparison with the results obtained in previous studies with a different series of sulfide. The result obtained in this work discloses that, in these oxidation, reactions the reactivity depends, not only of the used complex, but also, of the nucleophilicity of the used sulfides. The preparation of MoO5(N,N-DMLA) chiral complex, by a variety of methods, and the characterization of the obtained products by infrared, ultraviolet 13C-NMR, microanalyses and optical activity are also reported.
Utilização de métodos quimiométricos aliados a RMN na caracterização dos diferentes tipos de cafés comerciais
(Universidade Federal de São Carlos, 2007-03-02)
Tavares, Leila Aley
;
Ferreira, Antonio Gilberto
;
https://lattes.cnpq.br/3676462220401452
;
https://lattes.cnpq.br/9563262441800275
Coffee is an important product of Brazilian agribusiness. Nevertheless, the commercial evaluation of its quality is based upon subjective methods and this requires the methodologies development that provides information on differences of coffee chemical composition of different traits. The current work describes the application of multivariate analysis methods, mainly in NMR data, in order to verify chemical differences related to certain attributes that determine the coffee quality. In this work, the specie used in the brew preparation, defective coffee beans, adulteration with barley, the effect of temperature and time on the roasted coffee composition, cup quality and production mode were studied. In the first study, it was determined the main differences between the composition of arabica and robusta coffee discriminating both species and was determined the content of each one in blends. In similar study, were discriminated blends of coffee and barley and was determined the percentage of this adulterant added to the coffee. In this case, comparing to NMR, the infrared spectroscopy also shows great efficiency for the same purpose. In the study of defective coffee beans were verified greater changes in the chemical composition of black beans compared to the non-defective coffee besides the discrimination of all kinds of defective beans analyzed; green, sour, and black. Considering the production mode, were discriminated coffees produced conventionally and organically. The higher acetic acid content in the organic samples was determinant to this discrimination. Considering the cup quality, efficient chemometric models were obtained to classify the samples with different qualities - soft, hard, and rio. The lipid compounds were important to this classification and were identified by using HR-MAS technique. In the study of roast degree it was verified greater influence of the temperature in the chemical composition changes from roasted coffees and it was possible to discriminate samples that were submitted to several conditions of time and temperature during roast process.
A burocracia vista do cartório: uma análise antropológica da burocracia estatal
(Universidade Federal de São Carlos, 2007-03-02)
Pinto, Danilo César Souza
;
Leirner, Piero de Camargo
;
https://lattes.cnpq.br/0146541919194332
Uma dissertação costuma ser fruto de esforços de muitas pessoas e instituições. Este caso não é diferente. Primeiramente agradeço a FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) que financiou a pesquisa. Gostaria de agradecer ao meu tio e informante José Gabriel de Lima. Aos funcionários do 1º Tabelionato de Notas e Protesto de Bragança Paulista e a todos que, gentilmente, concederam entrevistas ou me deixaram acompanhá-los em seus itinerários burocráticos. Agradeço também a todo corpo docente do Departamento de Ciências Sociais da UFSCar, na pessoa do professor Luiz Henrique de Toledo, pela amizade, idéias sugeridas na qualificação e pelo acompanhamento durante todo o decorrer de minha formação. À professora Ciméa Beviláqua por ter aceitado participar desta banca e pelo acompanhamento do trabalho durante os congressos que participei. A todos meus amigos de São Carlos, principalmente aos moradores das duas repúblicas irmãs, Marissales e Barravento: Caê, Alexandre, Leandro, Kleber, João, Paulo e Jonathan pelos anos de convivência e debate; Dom, Moraes, Rafael, Vítor, Murilo, Érica, Samuel, Pícaro, Pequeno e Raquel pela grande amizade. Às minhas amigas da psicologia, na pessoa da Bia, pelo apoio durante o mestrado. Aos meus amigos de Bragança: Marcinho, Igor, João, Juliano, André, Rafael e Willian. Ao professor e orientador Piero de Camargo Leirner, pela amizade e companheirismo, bem como pela disposição constante, fazendo-se sempre presente: ajudando, conversando e sugerindo. Finalmente, à minha família, minhas irmãs e, principalmente, ao meu pai José e mãe Ludimila, sem a ajuda dos quais, nada disto seria possível.
Vitrocerâmicas do sistema Li2O - Al2O3 - SiO2 (LAS) via sinterização com cristalização concorrente
(Universidade Federal de São Carlos, 2007-03-02)
Soares, Viviane Oliveira
;
Zanotto, Edgar Dutra
;
https://lattes.cnpq.br/1055167132036400
;
https://lattes.cnpq.br/3453493533943934
LAS (Li2O-Al2O3-SiO2) glasses have been often used to produce glass- ceramics with near zero thermal expansion coefficient. These glass-ceramics are very important for applications that require high thermal shock resistance. However, they are still produced by traditional techniques, such as melting and forming followed by internal nucleation (induced by the addition of catalysts) and crystal growth in the volume of monolithic glass pieces. An alternative route for the production of glass-ceramics is via sintering of catalyst-free glass particles with controlled surface crystallization. The purpose of the present work was to determine the appropriate compositions and sintering conditions to produce dense LAS glass-ceramics having almost null porosity. Three compositions were analyzed to achieve near zero thermal expansion coefficient. The precursor glasses were analyzed by thermal analysis, and the glassceramics were analyzed by X-ray diffraction, optical microscopy and electron microscopy. Dense glass-ceramics were obtained with porosity below 1.5%. The results show that reduction of crystallization by an ion exchange promotes sintering. However, the high amount of vitreous phase present in these samples increases the thermal expansion coefficient. At least for one composition we obtained a glass-ceramic having a porosity of 1.4% and a thermal expansion coefficient of 0.5 x 10 -6 °C-1, a value similar to that of vitreous silica.
Processos de educar e educar-se em instituição de atendimento a crianças e adolescentes em situação de risco
(Universidade Federal de São Carlos, 2007-03-05)
Silva, Lígia Maria Portela da
;
Oliveira, Maria Waldenez de
;
https://lattes.cnpq.br/3404769527869004
;
https://lattes.cnpq.br/7053146729033200
This work investigated how educators and students, who participated in the program of attending on children and adolescents at risk situation, are educated in order to recognize and respect the differences and also recognize their potentialities and limits, exercising their reflexive, critical, and propositive capacity. It was developed in 2006 and 2007, with the Programa Conquista Criança, a municipal action of attending on children and adolescents at risk situation, in Vitória da Conquista, in the State of Bahia, and it had as field of empiric research two workshops developed by the Program. The goals of the research were: a) to identify and analyze the conceptions of educators and students about education, educator, child and adolescent, and about the aims and the action of the Programa Conquista Criança; b) to analyze the educator s and the student s praxis and their formative process, identifying the different spaces, experiences and moments in which this process takes place. In this work, we understand education as a dialogical process, in the freirian perspective, in which the subjects involved are educated in relation to themselves and to the world, through reflexion and action, noticing reality as a process in continuous transformation. In this way, people educate and are educated in the several social practices in which they are inserted, so education also happens beyond the school space. For the development of the research the following proceedings were used: conversations, non-systematic observations and systematic ones, which were all registered in a field diary; interviews, and after the interview transcriptions, discussion with the participants were made; data analysis elaborated by the researcher was also discussed with the participants. Nineteen sections of observation and ten interviews were accomplished. Two educators and two students participated in this process. The elements that appeared from the adopted procedures permitted us establish the following categories of analysis, systematizing the participants conceptions and experiences: Visions of oneself and of the other; Visions of education and of the educative work in the Programa Conquista Criança; The daily work. That analysis led to the following dimensions understanding which aims at the citizenship formation: To do things together; To question, to listen, to say, to dialogue; To seek coherence of one s own behavior, keeping in touch with one s own history and inner truth; To exercise faith in the human being; To have and provide space of being and acting, exercising autonomy and responsibility. This work contributes to the reflection and elaboration of formative proposals to educators that act in the infantile and juvenile area, offering elements to think about the educative work, specially the one that is developed in institutions of attendance on children and young people at risk situation. The pointed dimensions can be of special interest to think over the practices developed at the school spaces, including the university and processes of education building knowledge.
Operação ótima de reator para síntese enzimática de ampicilina com cristalização simultânea dos produtos
(Universidade Federal de São Carlos, 2007-03-05)
Ribeiro, Marcelo Perencin de Arruda
;
Giordano, Roberto de Campos
;
https://lattes.cnpq.br/0381402687491195
Nowadays, industrial production of semi-synthetic penicillins requires low temperatures, organochloride solvents and yields a great amount of non-recyclable wastes. During the last decades, concerns about environmental impacts have increased, as well as the environmental legislation restrictions. Thus, the pursuit of cleaner routes has been encouraged. Enzymatic synthesis of these antibiotics, using penicillin G acylase (PGA) as biocatalyst, may be carried out at mild temperatures and pH, and is an environmentalfriendly route, alternative to the chemical synthesis. However, the low yields of the enzymatic process are still a drawback for their industrial implementation. An enzymatic semi-batch reactor using aqueous-precipitated medium is a promising approach to improve process efficiency. Yet, finding the optimal operation condition of the reactor is still a challenge, in order to make the enzymatic route economically competitive. This thesis addresses this issue, focusing on several aspects of the enzymatic synthesis of ampicillin. The comprehension of the reaction mechanism, still not a consensus in the literature, was improved especially with respect to the role of the beta-lactam nucleus during the formation of the acyl-enzyme intermediate, which has important consequences on the reactor operation. Diffusion in the biocatalyst pores and its influence on the pH profile within this micro-environment were assessed through computer simulations. Results indicate considerable diffusion resistances within the biocatalyst, yielding important pH profiles. The process complexity leaded to the use of simplified mechanistic or empirical kinetic models. Applying dynamic optimization (optimal control) techniques, feed profiles for the reactants were obtained. A simplified model for the integrated semi-batch reactor for enzymatic synthesis of ampicillin with product crystallization was used for this purpose. Different techniques of dynamic optimization provided qualitatively the same optimum heuristics for the process operation. Since simplified models were used in optimal open-loop control algorithms, theoretical feed policies may diverge from those that would be needed to maintain the track of the concentration profiles of the optimized reactor. Moreover, disturbances in the input variables might lead the system to a different course. Thus, on-line monitoring is essential in pilot plants or industrial reactors. Multivariate calibration using UV spectra was the basis for the development of a system of analysis via flow injection (FIA), with good results. Ampicillin synthesis assays using an industrial biocatalyst (Recordatti, Italy) were run in order to improve some simplified kinetic models. The re-estimated models were inserted in optimization algorithms, providing trajectories in accordance with the same heuristics previously obtained. Experimental results obtained after two runs in the integrated semi-continuous reactor put into evidence a mismatch between model responses and the real process. This difference may be explained by the extrapolation of the kinetic model with respect to the enzymatic reactor load. On the other side, using a biocatalyst wrapped with a secondary inert matrix might alter the microenvironment of the enzyme, especially with respect to pH. Using a model that takes into account the effect of pH on the kinetics seems to be important to allow the fine-tuning of the industrial reactor selectivity and productivity.
Designação e argumentação em uma ação popular da cidade de São Carlos
(Universidade Federal de São Carlos, 2007-03-05)
Canassa, Marcela Codognatto
;
Silva, Soeli Maria Schreiber da
;
https://lattes.cnpq.br/8794598988783452
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https://lattes.cnpq.br/2991827496498503
This work is developed with the perspective theory and methodology of the Semantics of happening and has the objective to understand how to work the designation of language, more specificaly, to analyze how to work to the juridical argumentation through the designations. As an example we took as an analyze object a juridical process named Ação Popular 2, where the petitioner locutors ask the preservation of the public square Coronel Paulino Carlos de Arruda Botelho, where the one who were required were building commercial points to ambulant commmerce. In conclusion we contacted that there is two relations of antonym in this process that mobilized the argumentation. A big one which happen between the enunciation of the petitioners locutors and those used by who were required; and a specific one, which happen in the interior of the enunciation of the petitioners locutors which through of the deignations and of the memorables, guide the argumentation in favor of the preservation of the Square Paulino Carlos as historic patrimony of the city, and so the square stays as the space of the local identity preservation.
A reestruturação das cadeias de suprimentos de sementes de milho híbrido no Brasil
(Universidade Federal de São Carlos, 2007-03-05)
Dias, Fernando Mayer
;
Alves, Maria Rita Pontes Assumpção
;
https://lattes.cnpq.br/1699788011520872
The changes in the supply and in the products demand have motivated the companies to look for new ways of management, able to integrate the organizations, based on the development of relationships with business partners. In the hybrid corn seeds sector in Brazil, this search started in the end of nineties, when this sector was restructured, creating a new hybrid supply in the market and raising the competition. The higher products supply associated with the changes in the seeds demand profile has resulted in difficulties for the processors to establish the mix in order to serve the farmers, creating wastes in obsolete stock forms. This paper proposes a study of multiple cases in order to clarify casual links between the supply chain structure and the obsolete seeds wastes. The participant members, the structural dimensions, the integrations of the demand management process and the products and information flows were all identified. The results of this research point out that the national hybrid corn seeds sector shows two distinct supply chain structures. A traditional structure, that counts on the presence of the retail to offer its products in the market, and a new structure which serves directly the farmers. The results also point out that the waste of hybrid corn seeds in Brazil is related to supply chain structure. The presence of a numerous immediate tier customers and the lack of collaborative working between the processor and the retail blocks the processors demand visibility. The activities that form the demand management are made mainly by the processor, with a functional work structure and showing a low level of integration with the retail. The lack of information about the demand results in seeds production plan based on the stores orders, raising the distortion on the demand estimate, creating the bullwhip effect. Besides that, it leads the seeds processor to push inventory forward based on forecasting. The push inventory raises the level of the stocks and causes a risk of incorrect stocks in the retail, mainly because it is an innovative product with hard forecasting. These problems were not verified in the structure that serves the farmer directly. In this case, there is a higher integration of the demand management process, what allows a reduction of wastes.
A trajetória da Democracia Socialista : da fundação ao PT
(Universidade Federal de São Carlos, 2007-03-06)
Angelo, Vitor Amorim de
;
Villa, Marco Antonio
;
https://lattes.cnpq.br/4045059477271704
The dissertation analyzes the Socialist Democracy s (DS) trajectory between 1979, year of its foundation, and 1987, when the resolution about the Brazilian Workers Party s (PT) internal trends was approved. The DS was created on the strength of the unification of regional groups that acted in the student movement along with old left militants and since its beginning it contributed to the creation of the PT. During this period, the Socialist Democracy was one of the organizations that grew the most inside the party, holding managerial positions in its board, enjoying good relationships with its management and having most of its proposals incorporated by the PT. The hypothesis of this work is that this growth was a result of the performance marked by critiscism of the party and its leadership, and also because of the support to its management and respect of their own decisions, in an intermediate position that differentiated the Socialist Democracy of other PT s left organizations, especially that of the trotskists.
A gestão das creches municipais de São Carlos na visão das diretoras: da assistência à educação (1999-2004)
(Universidade Federal de São Carlos, 2007-03-06)
Reis, Maria das Graças Fernandes de Amorim dos
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Abramowicz, Anete
;
https://lattes.cnpq.br/5724281770530388
This research refers to the management of early childhood education, representing a diagnosis of the early childhood education institutions in São Carlos, named Creches (Day Care Centers). This study is important because it intends to contribute to the discussion of some questions about children s education in Creches (Day Care Centers); moreover, due to the lack of exploitation of this theme. The research was focused on the configuration and specificities of early childhood education management in the Creches (Day Care Centers) once it was transferred from Social and Assisting Promotion Department to the Educational Department, defined by LDB Law number 9394/96. The study main target was to put in doubt the elements brought by the management to the discussion of the work in the Creches (Day Care Centers). The paper was organized in several parts, in order to cover methodological issues; early childhood education national policies and how they interact with the actions promoted by the city-hall; a description of the city Creches (Day Care Centers), mentioning some statistic data, organization and operation, professionals who work in the Creches (Day Care Centers) and the city actions to implement the early childhood education in the Creches (Day Care Centers) during the last four years (2001-2004); nowadays perspectives in school management, emphasizing the participative management and an analysis of the school administration/management under a foucaultian perspective, posing the area as a field of knowledge/power; the presentation and analysis of the data collected through interviews with São Carlos Creches (Day Care Centers) principals. To make this study possible, it was necessary to combine bibliographical research about the early childhood education matters, the school administration/management and the adopted references; the documents research meant to characterize the updated childhood education public policies, based on the laws, the plans and some others, like documents which read contents and prescriptions about the early childhood education; and the data collecting through 14 interviews testimonies with principals of the city Creches (Day Care Centers) in São Carlos. The results of these interviews were a great amount of data, from which we selected some speeches, the most important parts to help characterize the management, the discussion and the analysis suggested. In the closing, as final considerations, we reassured many points discussed throughout the paper, viewing the necessity to proceed a reflection about the possible precocious school process of young children, as long as the proposal of other studies about the management of the institutions that assist children from 0 to 3 years old.
Para um estudo da questão do socialismo no Brasil: os primórdios em Santos através da publicação de A Questão Social
(Universidade Federal de São Carlos, 2007-03-06)
Turci, Alex Neriz
;
Vianna, Marly de Almeida Gomes
This study has as main goal analyze the publication A questão Social by the Socialist Center of Santos in the end of the 19th century. I search to understand how the socialists ideas emerged in Europe were established in the country and their reflexes over the left-wing press in this study, the periodical of the Socialist Center of Santos. The present work tries to show why not to consider the revolutionary acts as the most adequate, searching for a reformist way of action. The fact of Marxism has seduced intellectuals from middle classes, from which the leaders of the Center of Santos came from; pointing out that Silvério Fontes was a strong mischaracterizing element in this organization before the labor man. The biggest part of the work parties and organizations defining themselves as socialists in Brazil during the last decade of the 19th century fought for reformist measures in favor of workmen such as reduction of working hours and prohibition of child labor. Thus it can be stated that the Brazilian Socialism was coherent with the dominant chain of the International Second which prayed for a socialist society from a perspective which would be the result of a historical evolution without any kind of violent means to achieve this occurrence, concentrating its main efforts on short and middle term political actions, that is, in achieving electing victories and in the program that should lead its actions if they ever got the power through party arena. And their publications are an important historical source to understand this reception of ideas.
Aplicação conjunta do custeio baseado em atividades com o valor econômico agregado (EVA) em uma cooperativa agropecuária avícola de corte.
(Universidade Federal de São Carlos, 2007-03-07)
Souza Filho, Men de Sá Moreira de
;
Batalha, Mario Otávio
;
https://lattes.cnpq.br/1015001063418091
;
https://lattes.cnpq.br/4768901375579199
The present work aims a joint application of Activity Based Costing (ABC) with Economic Value Added (EVA) in a poultry agropecuary cooperative. Firstly, it was defined the following for the development of the model of Activity Based Costing (ABC) as part of cooperative productive chain: poultry slaughterhouse, feed industry, incubatoty and broiler parents farm. Secondly, it was evaluated the economic value creation at the cooperative through the Economic Value Added (EVA) indicator. Finally, joint application of Activity Based Costing (ABC) with Economic Value Added (EVA) was performed for costing objects of feed industry and poultry slaughterhouse cooperatives products. As result of the research, it was identified the following: cooperative products costing in terms of activities, evaluation of the value creation in the cooperative and cooperative products costing was possible based in activities, evaluation of value creation in the cooperative and which products create or destroy economic value in this organization. The model of Activity Based Costing (ABC) was applied for costing of cost objects in the operational units of the cooperative. The results showed evidencing in the case of the poultry slaughterhouse unit the presence of products with negative margin and rentability. Regards to the application of EVA it was verified that the cooperative presented a creation of economic value in the three last years of the carried through evaluation, however with one raised level of dependence of external capital for operations development. The joint application of Activity Based Costing (ABC) with Economic Value Added (EVA) revealed viable with regard to its use in the structure of the poultry slaughterhouse and feed industry by means of the use drivers of capital cost. This application assists in the evaluation and adequacy of products mix of the cooperative for direction the value creation.
Abordagens alimentares em uma comunidade pesqueira de Cananéia, Litoral Sul de São Paulo: conhecimento tradicional, gênero, segurança alimentar e sustentabilidade
(Universidade Federal de São Carlos, 2007-03-07)
Ferreira, Marina Vianna
;
Nordi, Nivaldo
;
https://lattes.cnpq.br/8168865557947289
;
https://lattes.cnpq.br/9020309796452848
A batalha pela memória : os militares e o golpe de 1964
(Universidade Federal de São Carlos, 2007-03-07)
Atassio, Aline Prado
;
Villa, Marco Antonio
;
https://lattes.cnpq.br/7695077592581355
Influência da ordem-desordem estrutural na fotoluminescência do CaTiO3:Sm
(Universidade Federal de São Carlos, 2007-03-08)
Figueiredo, Alberthmeiry Teixeira de
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Longo, Elson
;
https://lattes.cnpq.br/9848311210578810
;
https://lattes.cnpq.br/7026388762536003
Some properties of the materials, such as ferroelectric and optic, are dependents to structural organization of the material. Thus, to know the order disorder degree at short, intermediate and long range is important to elucidate or predict properties in materials. The PL emission at room temperature will be used to study the structural order disorder at short, intermediate and long range in the CaTiO3:Sm, in function of annealed temperature. Using studies of the structural order disorder in the CaTiO3:Sm system will propose a model that appoint to favorable conditions, in disordered material, to show PL emission at room temperature.
Seleção de ligas com alta tendência de formação de estrutura amorfa
(Universidade Federal de São Carlos, 2007-03-08)
Aliaga, Luis César Rodriguez
;
Kiminami, Claudio Shyinti
;
https://lattes.cnpq.br/5443002033733395
;
https://lattes.cnpq.br/7148278938710201
The understanding of the law that explain why certain alloys form amorphous structure by cooling the molten melt under cooling rates lower than others alloys remains as one of the great challenges of the materials science and engineering. There is not only scientific but also technological importance in determining the best compositions that can form such metastable structures with larger simplicity. In an effort for elucidating part of this mystery diverse models and criteria are promising: i) of topological instability, "λ criterion", and ii) the thermodynamic approach, "γ* criterion". The application of this last one in binary systems showed excellent prediction of the amorphous former compositions. Although, experimental results through the years have proven that multi-component systems, especially ternary ones, are more suitable to form bulk samples with amorphous structure. The goal of this thesis is to search compositions with high glass forming ability, by means of the application of models and criterions focusing on systems based on chemical elements of relative low cost. An extension of the γ* criterion , for ternary systems, was developed and valided for Cu-Zr-Al alloys. That extension of the γ* criterion was, combined with the λ-criterion , applied to select new alloy compositions with high glass forming ability in Ni-Ti and Ni-Nb-B systems. The combined use of both criterions was quite powerful tool in the selection of alloys with the higher GFA.
Segurança em instalações elétricas provisórias em canteiros de obras
(Universidade Federal de São Carlos, 2007-03-09)
Mantelli, Fernando Eduardo Alonso
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Serra, Sheyla Mara Baptista
;
https://lattes.cnpq.br/8528385567782505
;
https://lattes.cnpq.br/5061094631681697
Temporary electric installations occur in small, average and great construction-sites and many times for being of temporary nature are unsafe and precariously executed. The electricity, source of potential danger even in low tension, is responsible on significant part of the occupational accidents, directly by means of electrical shocks and burnings due the voltaic arcs or indirectly by means of injuries caused for machines, equipment and components, requiring therefore, special attention in order to prevent accidents. Through case study it is considered to verify the safety condition in a construction-site temporary electric installations in the NR 18 - Conditions and Environment of Work in Construction Industry regulations.
Expressão recombinante da canacistatina em células de inseto
(Universidade Federal de São Carlos, 2007-03-09)
Silva, Mylene de Melo
;
Silva, Flávio Henrique da
;
https://lattes.cnpq.br/1757309852446263
;
https://lattes.cnpq.br/9301036866854470
Due to the great economic importance of sugarcane crop in Brazil, the occurrence of infections by phytopathogens leading to decreased productivity and quality remains a serious problem. As the plants have natural mechanisms of defense against the attack of fungi and insects, amongst which the inhibitors of proteases are distinguished, the use of these substances in the development of resistant plants or in pesticide production may be an interesting alternative. One of the major classes of protease inhibitors acting against the attack of pathogens is the cystatins, proteins that inhibit cysteine proteases specifically. Canecystatin was the first cysteine protease inhibitor characterized from sugarcane. This gene codes for a ~ 14 kDa protein that contains conserved regions common to the cystatin family. Although the protein has previously been produced in a bacterial system of expression, in this work we use this sugarcane cystatin as a model for the implementation of a heterologous protein expression system in insect cells. This system has some advantages relatively to the prokaryotic system such as the possibility of posttranslational modifications. The recombinant protein was expressed in this system in a soluble form and purified using affinity chromatography in a nickel column, rendering approximately 23 mg/L of pure protein. The activity of the protein was assayed against papain, being capable of inhibiting the activity of this cysteine protease efficiently. Furthermore, the stability of the protein was analyzed in different conditions of pH and temperature. We conclude that the canecystatin is a good model for the implementation of the Baculovirus Expression System at the Molecular Biology Laboratory of the UFSCar
Estrutura genética populacional de Brycon hilarii (Characidae) da sub-bacia do Rio Miranda, e seu significado para programas de conservação
(Universidade Federal de São Carlos, 2007-03-09)
Sanches, Alexandra
;
Galetti Júnior, Pedro Manoel
;
https://lattes.cnpq.br/7398754661670478
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https://lattes.cnpq.br/4999886032379825
Brycon hilarii (subfamily Bryconinae, Characidae), popularly known as piraputanga, is a migratory fish species distributed throughout the entire Paraguay River basin and largely appreciated for its meat quality as well as for fishing, besides being the main species of touristic value in the Bonito region (MS, Brazil). Considering the lack of information on the population genetic structure of these fish, the objective of the present study was to analyze, through the use of microsatellite markers, the distribution of the genetic variability in Brycon hilarii collected in different localities of the Miranda River sub-basin (Paraguay basin) in the Bonito region (MS). For such an end, at first a total of seven polymorphic microsatellite loci capable of producing a considerable genetic variation was prospected (among di-, tri- and tetranucleotides), with their also being efficient in the heterologous amplification for five other species of the genus. In the populational analysis of B. hilarii, the different samples presented very similar genetic diversity levels. Through the FST values, gene and genotype differentiation tests and Bayesian analysis, it was possible to verify (1) the existence of at least two genetic populations of Brycon hularii coexisting in the sampled range, despite being a potentially mobile species; and (2) that only the fish from a reproductive stock were genetically differentiated from the other samples, representing a putative population unit. It is possible that in the reproductive season the more genetically homogeneous individuals organize themselves into a population genetic unit or a reproductive stock, aiming the maintenance of their genetic integrity. These results on the genetic structure of B. hilarii constitute tools of extreme importance considering they can aid the understanding of the behavior and biology of these fish, contributing to fish management and species conservation programs.