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Semicondutores no ensino médio: uma proposta de ensino de física contemporânea
(Universidade Federal de São Carlos, 2013-12-17)
Freitas, Frederico Campos
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Oliveira, Adilson Jesus Aparecido de
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https://lattes.cnpq.br/4640148190073166
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https://lattes.cnpq.br/4857392124543432
Most of electronic devices use diodes and transistors based on semiconductors. For a people better relationship and understanding these technologies, is important to know some basic principles in what these devices are based. There are several official documents and academic researches related with this theme, always exalting of the need teach concepts of Modern Physics - especially those related to Quantum theory - for high school students. The goal of this work was the production of four short videos, whose intention was explain semiconductor concepts for high school students. In this master thesis is described the process of screenplay s production, videos recording and its presentation on two classes of High School last grade of a private school in Uberaba-MG. After each video s presentation, a questionnaire with Likert s items was given to students for measure their attitude with reference to the concepts presented in these four videos. The questionnaires results were analyzed from theory point of view, and the proposed goal has been achieved.
Atuação bibliotecária no tratamento temático da informação em unidades informacionais: um estudo comparativo qualitativo-quantitativo
(Universidade Federal de São Carlos, 2013-12-17)
Tartarotti, Roberta Cristina Dal Evedove
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Rubi, Milena Polsinelli
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https://lattes.cnpq.br/5656585147722568
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https://lattes.cnpq.br/0013338820189150
Considering the importance of information and knowledge socialization in the present day context and the essentiality of the production of knowledge for producing science, access to quality and reliable information remains crucial. The field of Knowledge Organization and Representation (KOR) of Information Science offers the theoretical-practical approach available for the production, processing and retrieval of information and knowledge in the society, considering the treatment of information as a complementary linkage between the production and the very use of information. The main purpose of the present exploratory-descriptive qualitative-quantitative and theoretical-practical study was conduct a research of library functions in the thematic treatment of information in the retrieval systems of information units through subject cataloging in online collective catalog, with focus on subject analysis. In the design of the study, the following specific objectives were set: a) to investigate the process of subject cataloguing in online collective catalogs as well as the process of indexing in databases; b) to evaluate the documentary indexing in the context of information retrieval systems of university libraries; 3) to discuss the practice of subject cataloguing and the indexing process in order to improve professional practice in the thematic treatment of information in the context of university libraries. First, the study offers some theoretical perspectives for the dialogue between the fields of Science, Technology and Society (STS) and the field of Information Science (IC), in view of the area of Knowledge Organization and Representation (KOR). Second, it presents the elements of science and technology policy in university libraries and the retrieval systems of units of information, especially the university libraries online collective catalogs and the databases of specialized scientific areas. Finally, it presents the information subject treatment (IST) in the domain of Information Science, considering the importance of this process in information retrieval for users and researchers from the academic context. After reviewing the literature, the Verbal Protocol (VP) analysis in the modality of Individual Verbal Protocol (IVP) was used as a qualitative method for collecting data from the librarians who work in information retrieval systems in Health, to observe the cognitive processes of documental analysis (document type: Doctoral thesis) in the subject cataloguing in the online collective catalog DEDALUS (USP) and to perform the indexing process in LILACS database (BIREME). Additionally, indexing evaluation (IE) was used as a quantitative method to measure and to evaluate the intrinsic/extrinsic aspects of the indexing process, in the modality the Intra-indexer consistency or Intralibrarian taking into account the lack of verticalized studies that use this method. The sample of the study comprised three public university libraries from the University of São Paulo: Library of the School of Dentistry, Library of the School of Public Health and Library of the Institute of Psychology 5 subjects (2 catalogers, 2 indexers and 1 cataloger-indexer) were studied. The results indicated low rates of intraconsistency between the processes of subject cataloguing and subject indexing in the libraries, however, in the average reported in the literature. The conclusion of the study highlights the importance of considering interdisciplinarity in scientific, technological and social fields between the two scientific spheres, in view of the complexity of information flow and knowledge in society.
Raízes das instituições políticas brasileiras: indivíduo e estado brasileiro no pensamento político de Sérgio Buarque de Holanda e Oliveira Vianna
(Universidade Federal de São Carlos, 2013-12-17)
Melo, Martiniano Borges de
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Cepêda, Vera Alves
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https://lattes.cnpq.br/4917331423373631
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https://lattes.cnpq.br/8996922232315575
The purpose of this study is to find and compare in the works of Sérgio Buarque de Holanda (1936) and Oliveira Vianna (1949) the reasoning which tries to demonstrate that the essential ideological uniqueness of the Brazilian individual has been able to create a certain ethos that would eventually consolidate itself in the structuration of a state that holds a specific set of characteristics. In other words, we try to determine which arguments were used by the authors in order to demonstrate that the state is a product of sociabilities, and these, products of specific individuals.
A Geração de tecnologias para organizações solidárias
(Universidade Federal de São Carlos, 2013-12-17)
Candido, Silvio Eduardo Alvarez
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Eid, Farid
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https://lattes.cnpq.br/0194644249955417
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https://lattes.cnpq.br/1399082619423324
O artigo aponta para importância da geração de tecnologias adequadas às propostas das organizações solidárias. Para tanto, exploram-se as complementaridades de vertentes críticas, focadas em análises mais amplas, e construtivistas, mais microanalíticas, dos estudos sociais da tecnologia para evidenciar como as soluções tecnológicas ao mesmo tempo constroem e são construídas pela sociedade. Guiado por essas referências, defende-se a relevância da conjunção entre as propostas dos movimentos da Economia Solidária e das Tecnologias Sociais e propõe que o fortalecimento das organizações solidárias por meio de tecnologias adequadas pode ser potencializado pela criação de referências metodológicas para o projeto e adequação dessas tecnologias.
Impactos das práticas da acreditação no desempenho hospitalar: um survey em hospitais do estado de São Paulo
(Universidade Federal de São Carlos, 2013-12-17)
Alástico, Gabriel Pedro
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Toledo, José Carlos de
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https://lattes.cnpq.br/9421627326330417
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https://lattes.cnpq.br/9051672716831147
The demand for improving the health care services from social actors (Government, Insurance Companies, Patients and Payers) has carried out the hospitals to implement actions of performance improvement. In Brazil, it occurs in a context of deficiency in the management and efficiency of the processes. This thesis analyzes the implamentation impact of NAO‟s Accreditation practices (the brazilian certification most required in the healt care services) on the hospital performance as well as the moderators factors (hospital ownership, hospital size, Accreditation level and Accreditation time) influence in this relationship. A survey research involving the 32 Accredited hospitals from Sao Paulo State was carried out during six months. The survey evaluated the managers‟ perception about the hospital performance improvement comparing the current hospital performance with the hospital performance before the adoption of Accreditation practices. A statistic analysis determined the statistical significance between the Accreditation practices and the hospital performance improvement. Moreover, the most critical Accreditation practices for improving the hospital performance were identified. Finally, managerial actions were proposed to improve the performance of hospitals clusters composed by hospitals with similar management characteristics. The statistical analysis results identified a significant influence of the Accreditation practices in operational efficiency under the action of size and Accreditation time of the hospitals. The critical practices to the hospital performance improvement are the risks management practices and the managerial inovation practices. The first improve the hospital infection rate and the latter improve the medication errors rate.
Análise de glucuronídeos em urina humana com injeção direta de amostras por cromatografia líquida acoplada à espectrometria de massa
(Universidade Federal de São Carlos, 2013-12-17)
Castral, Thaís Corrêa
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Cass, Quezia Bezerra
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https://lattes.cnpq.br/9197210255594409
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https://lattes.cnpq.br/0124878003601321
This work describes the results obtained from studies carried out to quantify phenyl-β-D-glucuronide (FG) and nitrophenyl-β-D-glucuronide (NFG) in human urine by direct injection sample using LC-MS/MS system. The columns RAM-BSA SAX and RAM-BSA C8 were prepared and evaluated in relation to their exclusion capability of urine macromolecules and retention capability of FG by direct injection samples. Both columns presented good retention capability for glucuronide, however, the RAM-BSA SAX column was more efficient in exclusion since this column did not have any interferences eluting after the exclusion time. However, the RAM-BSA SAX column can not be used for FG quantification by LC-MS/MS because the chromatographic condition of this column presented high buffer concentration (40 mM ammonium formate), which resulted in total suppression of the FG signal. Therefore, the column RAM-BSA C8 was selected for the development of the methods. In this study we evaluated triple quadrupole (QqQ) and ion trap (IT) mass spectrometry for both selected glucuronides. It was not possible to obtain selectivity in the analytical conditions developed using UHPLC-QqQ. When we used the IT analyzer, we obtained selectivity in a multidimensional mode for the FG using the column RAM-BSA C8 in the first dimension and the column Ascentis Express F5 in the second dimension. For the NFG we achieved selectivity in a unidimensional mode. The figures of merit obtained with external standarization calibration curve with spiked pooled urines were accurate and precise. For FG, the LQ and LD were 1.0 μg/mL and 0.5 μg/mL, respectively, and to NFG, the LQ and LD were 4.0 μg/mL and 3.0 μg/mL. For the method application we adopted calibration by standard addition to minimize the individual differences between urine donors. To all six toxicological samples analyzed, just one exceeded the regulatory limits for urinary phenol. For NFG, there were no toxicological samples available, thus the method was applied in spiked samples in the laboratory.
A atenção social nos desastres: uma análise sociológica das diversas concepções de atendimento aos grupos sociais afetados
(Universidade Federal de São Carlos, 2013-12-17)
Siena, Mariana
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Valêncio, Norma Felicidade Lopes da Silva
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https://lattes.cnpq.br/7161606146208875
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https://lattes.cnpq.br/0223897912354111
The disaster is a tragic and critical event that exceeds the everyday life, invaded it, messes it out. It is a phenomenon seen as unacceptable, and that surprises those who are both in and out of the scene; immediate concerns prompt mobilization of resources and exceptional measures, pressing authorities to act quickly (VALENCIO, 2012). Faced with such a phenomenon, civil defense has the institutional mission of coordinating all actions in context, including those of social assistance. However, the national reality tells us that, in Brazilian municipalities, social assistance has a significantly greater institutional presence in relation to civil defense. Howsoever, whether the presence of civil defense, either with the presence of social assistance, public assistance to those social groups affected in the disaster or that enhances their vulnerability to threatening events has been characterized by precariousness. That is, the recurrent has been a kind of care that goal by the kingdom needs (not rights), not exceeding the supply of needs, where is considered enough by the public entity the provision based on mattresses and baskets of food. Studies about politics of civil defense in disaster scenario were made by Valencio (2009, 2012), and Valencio & Valencio (2010). But, there is a gap in the debate about the strategic social care services in the context of disaster. This study aimed to throw light on this gap and analyze the reasons why, in the context of disaster, assistance to vulnerable populations remains as precarious. For this, the main objective of this study was to examine the sociological discourse and practice of social assistance in the context of disaster, using a macro and micro sociological perspective from the case study of the municipality of Ribeirão Preto/SP. Thus, study focused on the ways in which social context portrayed the disaster and, thereafter, identified the affected social groups and individuals from whom made his acting technique. In the present case, the acting technique implemented in the municipality and analyzed in this study was centrally guided in the displacement of a group of residents of some slums, recurrently subject to floods, to the housing complex Toni Wilson Garden.
Mapeamento e análise da percepção e impactos entre usuários finais do acesso aberto à informação científica
(Universidade Federal de São Carlos, 2013-12-17)
Silva-Jerez, Nelson Sebastian
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Furnival, Ariadne Chloe Mary
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https://lattes.cnpq.br/1291482506649810
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https://lattes.cnpq.br/7157978490951972
ABSTRACT Abstract: The main aim of the research here presented was to gauge how open access to peer-reviewed scientific literature is perceived and understood by the so-called lay public, and how that public uses, accesses and understands the information found. The research further sought to identify how this literature serves the information needs of users. The main theme here is the Open Access movement, understood as access to digital publications of scientific communication, free of any restrictions other than those coming from obtaining access to an Internet connection. The quantitative analysis of data obtained through a structured questionnaire was used. Given the exploratory nature of the study, voluntary interviews with 73 people randomly chosen were conducted . Out of these, 55 were conducted online and 18 in person.The questionnaire consisted of 26 closed questions, and was divided into four parts, plus a simple demographic profile. The first part evaluated health information literacy, using for this an adaptation of the monitoring tool developed by Niemelä et al., consisting of six questions based on the Likert scale. It was find that respondents realise the importance of being well informed about health matters, and obtain information from medical and/or scientific sources, but this does not translate into similar levels of confidence in their own skills to retrieve information and assess its reliability. The second part sought to identify how users access health information that meets their needs, and how they trust the different sources.The five most frequently reported sources were the Internet, the doctor or health care professional, acquaintances with no specific competences in the area, labels and package inserts for medicines, and associates with expertise in the health care area. Regarding the Internet, it was found that repositories of articles are more used than wikis and forums, two types of sites we believed to have more appeal than the scientific literature, and also were perceived as more credible sources. The third part sought to measure the respondents perceptions regarding their own knowledge about scientific literature and the open access concept. It was observed that a large majority of respondents believe that they would not know the difference between a scientific article and a newspaper article about science and neither would they know how to define what is open access.The fourth part was to evaluate how subjects use information found in their decision making process. Respondents mostly have used or would use health information found on the Internet critically in the decision-making process, including to change doctors. It is concluded that despite the increasingly widespread use of the Internet as a source of daily information for the general public, and the latent desire to use more reliable information, understood in this research as being thatof scientific origin, there are still barriers that could be minimized by open access to scientific literature, resulting in the potential improvement of decision-making power of the general public.
Transição agroecológica em assentamentos rurais no entorno da reserva biológica de Poço das Antas - RJ
(Universidade Federal de São Carlos, 2013-12-18)
Rivetti, Leonardo Vicente
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Norder, Luiz Antonio Cabello
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https://lattes.cnpq.br/0080353709980071
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https://lattes.cnpq.br/2744034908312034
This study aimed to analyze the process of agroecological transition in Microregion of the São João River Basin, in the state of Rio de Janeiro, more specifically in agrarian reform settlements surrounding the Biological Reserve Poço das Antas. The idea to start a transition process in local agriculture started from the initiative of some technical extension of municipal and nongovernmental organizations, entities technical assistance and rural extension, and farmers and social movements in the region. Introducing aspects of qualitative and quantitative, the research was conducted from realization semistructured interviews to collect information about the object of study, as well as documentary research for gathering data, photographic records and field observations. The dialogue with settled families and technical extension was the main tool to analyze the transition process in field level, identifying and understanding different times of the trajectory of change in the context local agriculture. The adoption of ecological practices in production systems brought improvements in the quality of soil and water properties in favored local biome with the increase in biodiversity and polycultures and agroflorestry systems, diversification of production and improved income for a group of producers. However, despite positive externalities, in current phase, in year 2012, the process of agroecological transition has entered a phase of disjointed in the current phase, with lower capacity range, compared to other times considered in this study. The research points to the importance of new and different theoretical discussion, including policy, around the principles of agroecology in its complexity, to promote a transition in agriculture an appropriate proposal to agriculture in context of human communities and ecosystems they inhabit.
Estudo de blenda polimérica PET/PE aplicado na reciclagem de aparas de filmes multicamadas
(Universidade Federal de São Carlos, 2013-12-18)
Uehara, Gabriel Abreu
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Canevarolo Júnior, Sebastião Vicente
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https://lattes.cnpq.br/4153664441338178
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https://lattes.cnpq.br/6164431605058964
The main objective of this work was to analyze the viability of the recycling of post-industrial packaging scraps, compounded by multilayer laminated films of PET-HDPE, for production of polymer blends with good physical-mechanical performance. Initially, several PET-HDPE model-blends were developed utilizing pure resins, in which had similar characteristics to the polymers that are effectively utilized by the cosmetic industry that generate the scraps. The model-blends were produced in diverse formulations, starting from a 2² full factorial design of experiments (DOE) and expanding it afterwards to a central composite design, in which varied the PET/HDPE ratio from 0 to 100 wt%. Polyolefin compatibilizers based on glycidyl methacrylate (E-GMA) and maleic anhydride (PE-g-MA) have been used to promote the compatibilization reaction between PET and HDPE. The physical-mechanical properties of the model-blends were evaluated by means of response surface methodology (RSM), a scientific tool that provides a multivariate data analysis. Finally, the post-industrial plastic scraps were diluted in the same compatibilizer concentrations that defined the best conjunct of physical-mechanical properties for the model-blends. The DOE methodology showed to be a useful tool for assessing the recycling of post-industrial scraps, since it was possible to obtain recycled materials with considerable physical-mechanical properties. The deformation at yield enhanced with compatibilizers concentration, while the Young modulus diminished. The utilization of 10 wt% of PE-g-MA enhanced 12x the values of deformation at break, while the use of 10 wt% of E-GMA barely doubled the values of the property. Additionally, the blends compatibilized with PE-g-MA also showed a better performance under impact test. The utilization of 15 wt% of PE-g-MA enhanced the Izod impact resistance in 250%. The better performance of maleic anhydride based compatibilizer (PE-g-MA) is due to the possible presence of nylon-6 at the structure of the scraps, which undergoes a kinetically favorable chemical reaction, facilitating the compatibilization between the components. Finally, one could be demonstrated that starting from a technological premise it s possible to develop scientific models that optimize the recycling route of multilayer flexible packaging films that arise from cosmetic industry.
Novas narrativas para multiplataformas: um estudo sobre jogos de realidade alternada
(Universidade Federal de São Carlos, 2013-12-18)
Correia, Gabriel Costa
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Massarolo, João Carlos
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https://lattes.cnpq.br/3308336910966465
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https://lattes.cnpq.br/4746938817536999
The main goal of this dissertation is to introduce the alternate reality game as a new narrative for multiplatform. By new narratives are understood the forms of storytelling arising from the current development of digital technology; and for multiplatform the variety of means by which the contents of these stories can travel. For this main objective is reached, two main hypotheses are formulated: 1) ARGs are stories for multiple platforms using code-breaking with playful and narrative functions; and 2) they are developed from an intense transtextuality guided by pop mythology that flourished during the twentieth century. Based on this starting point, this thesis will examine two ARGs, Uncertain Zone and Why So Serious?, in a way that it contributes to the hypothesis that Alternate Reality Games are a native narrative form of convergence culture founded on an extensive base of pop culture references. In the chapter dedicated to Uncertain Zone will be listed the various media used during the performance of the ARG, that together with interviews with the developers and testimonials from participants will weave a more descriptive overview of how alternate reality games are composed as multiplatform narratives. In addition, a brief discussion on the playful and narrative functions of the code-breaking in ARGs will be outlined. With Why So Serious? the analysis will focus on the intense transtextuality that alternate reality games establish to what will be called pop mythology in this dissertation and in the relationship between ARGs and market. Incidentally issues related to participatory culture will be raised throughout the text, but without further reflection, since, worth reiterating, the main goal of this thesis is the demonstration of a contemporary narrative form from some elements previously submitted, this form is the alternate reality game.
Ideação à inovação disruptiva: um estudo de caso sobre seus condicionantes
(Universidade Federal de São Carlos, 2013-12-18)
Cardoso, Marcos Milani
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Torkomian, Ana Lúcia Vitale
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https://lattes.cnpq.br/2704734508727222
This present work represents a case study conducted with different business units and corporate areas in a Brazilian branch of a multinational company (acknowledged by its innovative strength in multiple sectors: auto parts, consumer goods and industrial goods), aiming to understand what inhibits or enables a more venturesome innovative approach towards more disruptive products (understood as those genuinely new, designed after actual demands and unmet needs, avoiding limitations of technological paradigms and the erroneous inertial persecution of the same competitive attributes). For doing so, the following main objectives are established: 1. Understand how selected determinants (environment, human resources, financial resources, processes, culture and strategy) impact the product innovation portfolio composition in the units selected; 2. Therefore, identify ideas sources that are most frequently used and those considered most effective in each unit studied. As the background for this analysis, the literature review outlined starts discussing some concepts (disruptive innovation and value co-creation particularly) which exhort to the importance of a broader innovative orientation, dribbling an inertial conservative behavior that seems quite deleterious. After that, an approach on the main drivers that mold the innovation orientation is outlined (covering the lockin risks and opportunities brought by open innovation amidst the innovation strategy perspectives). Finally, the bottlenecks in the idea generation phase (which has been reported by some recent studies as the major cause for an alleged gap in disruptive innovations) are explored, some multidisciplinary contributions on innovation applied creativity (ideation concepts from cognitive and social sciences) are brought and the most effective and commonly used sources of ideas according to recent researches are covered. The analysis identifies three main innovation orientations in the studied areas (tech drivers with offensive strategies; need seekers with opportunist strategies; and market readers with more dependent strategies), what seems to be determined by deliberate corporate definitions molded by a more conservative and centralizing cultural and strategic approach of the company, dedicating limited innovation scope and resources for the branch. The idea sources follows this three main innovation orientations, also being close to those traditionally used internationally: technologically oriented areas with more innovative capabilities (offensive innovation strategy) tend to find more efficient and popular the technological prospection sources; dependent innovation approaches tend to rely on a more basic usage of voice of customer sources; and the opportunist orientation is the only approach more focused on open innovation methods (which generally have limited adoption). Besides and in general, internal and voice of customer sources tend to be disseminated and effectively used independently of the orientation.
Mecanismos de condução e relaxação elétrica em cerâmicas multiferróicas de Pb(Fe2/3W1/3)O3 e Pb(Fe1/2Nb1/2)O3
(Universidade Federal de São Carlos, 2013-12-19)
Silva, Roney Carlos da
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Eiras, José Antônio
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https://lattes.cnpq.br/6653223814715498
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https://lattes.cnpq.br/2997108027389298
Multiferroic are materials which have at least two of the three ferroics orders: ferromagnetism, ferroelectricity and/or ferroelasticity. The coupling between these properties, make multiferroic materials of great technological and scientific interest, mainly in the design of new devices such as sensors and spintronic devices. The lead iron tungstate Pb(Fe2=3W1=3)O3 (PFW) is a relaxor multiferroic with ferroelectric transition TC ~ 180K and antiferromagnetic TN ~ 340K, it is a member of the relaxor ferroelectrics family with perovskite structure, in which the two types of cations (Fe3+ e W6+) are randomly distributed in the B site, causing the formation of polar nanoregions (or clusters) of order/disorder at microscopic scale, which would be the origin of the relaxor behavior. Lead iron niobate Pb(Fe1=2Nb1=2)O3 (PFN) is a ferroelectric with diffuse phase transition (DPT) around TC ~ 380K and antiferromagnetic, with the G-type ordering below the Néel temperature, reported in TN ~ 143K. This material has a high dielectric constant, and excellent ferroelectric properties. The Pb2+, at site A, and Nb5+, at site B are responsible for the ferroelectric order, as the Fe3+ at site B is responsible to provide the necessary magnetic moment for the magnetic ordering. In this work, the electrical conduction and relaxation mechanism of multiferroics PFW and PFN ceramics were investigated. The PFW and PFN samples were prepared by solid state reaction method through two stages. This method was effective to obtain samples with majoritary perovskite phase (95,6% and 95,7%), respectively. After the densification process through sintering methods used in this work (conventional sintering, hot pressing and spark plasma), the perovskite phase was increased, being almost 100 %. The samples of PFW and PFN obtained by the different densification techniques, were dense and practically free of pores. For the analysis of the dielectric response of the samples, it was proposed in this work, an analysis protocol, which was effective to find the responsible mechanisms for the dielectric response of the studied materials. Two relaxation processes were identified for each studied sample, which were labeled as: PR-1, PR-2 or PR *. These processes can be attributed to the interfacial polarization and polarization by hopping, occurring due to the presence of defects in the lattice, such as the oxygen vacancies and lead vacancies. From the dependence of the DC electrical conductivity versus temperature, it was possible to identify regions with different mechanisms of electrical conduction for the samples of PFW and PFN. These mechanisms are, thermally activated at high temperatures, hopping of small polarons at intermediate temperatures and variable range hopping at low temperatures.
Descartes de obras provindas por doações na perspectiva da alteridade Baktiniana, caso: biblioteca da Unesp câmpus de Rio Claro-SP
(Universidade Federal de São Carlos, 2013-12-19)
Silva, Célia Aparecida Rufino da
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Amaral, Roniberto Morato do
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https://lattes.cnpq.br/9234683480758746
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https://lattes.cnpq.br/9234683480758746
The university library is seen as a component of cozy intellectual creation and the professional Librarian is responsible for the process of selection of works that will comprise its acquis. Due to the inconsistent performance of some professionals, when ignoring the practices that contemplate the acquisition of works by donation, originate from a set of irregular actions practiced by them in the processes of hewing and disposal, these performances are target of judicial inquiries, coming to denigrate the professional image and the institution. The objective of this work was to describe the processes of hewing in university libraries, under the perspective of Bakhtin’s vision in the form of act of professional librarian. For Bakhtin, are in human interactions that the subject is constituted discursively and encounter and from listening to various social voices that emerge the dialogical relations ahead the diversities of life. And it is in this communion of human acts that constitutes the relation of otherness. The research method used was the case study of an exploratory and descriptive bibliographical searches were also carried out for authors of the area. The case studied was the university library of Rio Claro campus/SPUNESP. As results were described the processes of selection and disposal touted the Bakhtin’s concepts according to the mode of action of the professional librarian. These processes in addition to meet the offer with works in accordance with the profile of institutional units, the mode of action of librarians and assistants are anchored in the “surplus of vision”, to seek alternatives such as: Reading Companion, Tallow Academic, thus promoting the relocation aware of same. It is concluded that based on the results and the theoretical discussions that the theme of hewing under the perspective of Bakhtin allows you to open the voice of the user in the development process of collections, in particular at the time of discarding or incorporate works of donation in the collection of the institution.
Argamassa para revestimento com propriedades termoacústicas, produzida a partir de vermiculita expandida e borracha reciclada de pneus
(Universidade Federal de São Carlos, 2013-12-19)
Cintra, Cynthia Leonis Dias
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Baldo, João Baptista
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https://lattes.cnpq.br/2410385643716370
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https://lattes.cnpq.br/5804164376029423
Light weight masonry mortars containing vermiculite are commonly used when one wants thermal and acoustic insulation. This Thesis investigated the incorporation of recycled used tires rubber crumbs as light weight mortar aggregates, in substitution of parts of vermiculite and sand. The main objective was based on the natural resources protection and decrease in environment impact, by means of the recycling in large quantities, of a problematic dischargeable product (used tires). By means of the pertinent standards, six masonry mortar compositions were investigated; two compositions of light weight masonry mortars containing cement, lime, sand and vermiculite, two compositions containing cement, lime, sand, vermiculite and rubber crumbs from recycled tires. In addition, to have a broader comparative ground ,a traditional mortar (cement+slime+sand) and an industrialized mortar (cemet+lime+sand+additives), not of the light weight class, were also investigated. The substitution of parts of vermiculite and sand by rubber recycled aggregates was taken to 45wt% of the whole light weight mortar mass. The results showed that the incorporation of rubber aggregates, promoted a decrease in the mortar drying shrinkage, a reasonable increase in the compressive strength and an expressive increase in the adherence strength of the light mortars. Another positive factor was that the inclusion of the rubber aggregates did not caused any sensible alteration neither in the thermal conductivity nor on the acoustic absorption, comparatively to the values presented by the light mortars without rubber aggregates. It was concluded that the light weight mortars containing recycled rubber aggregates, constitute a viable new contribution to the sustainable constructive elements field, fulfilling this Thesis main objective.
Análise do comportamento mecânico a quente do aço inoxidável super duplex UNS S32760 através de mapas de processamento
(Universidade Federal de São Carlos, 2013-12-19)
Dias, Clayton Pereira
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Balancin, Oscar
;
https://lattes.cnpq.br/8379205949387493
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https://lattes.cnpq.br/2332178514301460
The need for materials with higher mechanical and corrosion resistance in corrosive environments, such as in oil extraction in saline media, paper and pressure vessel industry, has led to the use of stainless steel Super Duplex. The manufacture of these materials involves the step of heat processing, whose performance depends on the hot workability of the material. In this paper we investigate whether the processing conditions in which super duplex stainless steel UNS S32760 can be worked and the work area in which the material can fail. The physical simulation was performed by means of hot torsion testing. The tests were performed at temperatures ranging from 900°C to 1200°C and strain rates of 0.01 s-1 to 10 s-1. The evolution of strain rate sensitivity of the flow stress(m) at all temperatures investigated in strain of 0.25, 0.5, 0.75 and 1 was determined. After obtaining the values of m for each deformation condition, the values of the efficiency of power dissipation (ῃ) were calculated and applying a criterion of instability (ξ) Processing maps were constructed. Using these maps, we discuss the effects of deformation conditions on the efficiency of power dissipation and the instability of plastic material. The domains of processing maps with the observed microstructures and aspects of plastic flow curves were related.
Tolerância de espécies nativas do cerrado ao alumínio em solução
(Universidade Federal de São Carlos, 2013-12-19)
Visconti, Bruno Arantes de Carvalho
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Soares, Marcio Roberto
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https://lattes.cnpq.br/6337462438517339
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https://orcid.org/0000-0002-9543-6450
The Cerrado biome (Brazilian savanna) occupies about 30% of the Brazilian territory. Its soils have limitations for the development of crops of economic interest, as they are naturally acidic, with high levels of aluminum (Al) and low availability of nutrients. However, native plant species tend to be insensitive to excess Al in the soil, using mechanisms of exclusion or internal detoxification. The fundamental objective of this study was to study the tolerance of seedlings of five native vegetal from to the Cerrado to increasing doses of Al (0, 10, 30, 60, and 120 mg L-1) in nutrient solution. The experiment was conducted in a greenhouse, in a randomized block design, with a 5 x 5 factorial scheme and three replicates. The following native species were used: Aegiphila sellowiana (Pau-tamanco), Tabernaemontana hystrix (Leiteiro), Lafoensia pacari (Dedaleiro), Cordia ecalyculata (Café-de-bugre), and Cedrela fissilis (Cedro-Rosa). The seedlings were transplanted into Leonard pots containing nutrient solution and different concentrations of Al. After 21 days, results of shoot and root biomass were submitted to analysis of variance and compared by Tukey's test, at the 5% level of significance. There was no significant difference for the biomass of the shoots and roots of the species studied with the increase in the concentration of Al in solution, probably due to the period of contact between the seedlings and the Al in solution being insufficient for the appearance of the Al effects. However, the fact that plant development was not affected was interpreted as indicative of tolerance to this type of abiotic stress, which normally is not observed in cultivated plants. Leonard vessels were considered suitable experimental apparatus for studying the influence of Al in solution on plant development. It was concluded that the five native species were tolerant to abiotic stress caused by exposure to nutrient solutions containing up to 120 mg L-1 of Al.
Estudo da aplicação da técnica de Trabalho Essencial da Fratura (EWF) na análise da tenacidade à fratura de sistemas poliméricos
(Universidade Federal de São Carlos, 2013-12-20)
Finocchio, Henrique
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Hage Júnior, Elias
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https://lattes.cnpq.br/1240692926327687
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https://lattes.cnpq.br/4221003986826298
Polymeric materials, including polymer blends and composites are used in a great variety of engineering applications. Toughness, which is associated to the capacity of the material to absorb energy before its break, is frequently an important characteristic to many high-performance applications becoming essential the use of effective methods to determine the intrinsic toughness of a material in order to increase the possibility of development and applications concerning polymeric materials establishing a relationship between fracture behavior and morphology. The method Essential Work of Fracture (EWF) has been receiving special attention to determine the toughness of high ductility polymers, however, sometimes, a low discerning use of the technique concerning the theory and the correct preparation of specimen of polymeric systems.This way, it was developed a very selective procedure to the preparation specimen which is the main step to obtain precise results. In order to expand EWF technique application and to evaluate the fracture toughness, in this work the fracture behavior of three different polymeric systems was observed. Two of them showed an excellent response to the technique. The nanocomposites of blends HDPE/LLDPE and OMMT and Polypropylene/Glass Fiber composites, both semi-crystalline materials, with ductile behavior. On the other hand, observing the other system, nanostructured blends SAN/PBT, with brittle behavior, the EWF method applied in this work showed to be inappropriate. Therefore, there was an improvement concerning the understanding of limitations and peculiarities of the EWF technique, which is nowadays a very useful tool to characterize the toughness of ductile polymeric materials althought it still has some limitations related to brittle materials.
Desenvolvimento e avaliação toxicológica de filmes comestíveis hidrofóbicos com incorporação de nanopartículas de quitosana
(Universidade Federal de São Carlos, 2013-12-20)
Scramin, Juliana Aparecida
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Forato, Lucimara Aparecida
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https://lattes.cnpq.br/9221673810542059
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https://lattes.cnpq.br/6021865875827160
The sweet sorghum is being evaluated as an alternative for the production ethanol during between harvest the sugar cane crop residue and part of this production consists of grains, rich in storage proteins, known as kafirins. In this work were extracted and characterized the kafirins of sweet sorghum cultivar BR 501 (white) free of tannins, with and without reducing agent, and the same were characterized by gel electrophoresis containing sodium dodecyl sulfate (SDS/PAGE). The secondary structures of kafirins were studied by spectroscopic techniques such as Fourier transform infrared and solid state 13C nuclear magnetic resonance (continue...).
Deleuze e Bergson. Tensão, esforço e fadiga na instauração filosófica
(Universidade Federal de São Carlos, 2013-12-20)
Silva, Cleber Daniel Lambert da
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Marques, Silene Torres
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https://lattes.cnpq.br/4822141288006918
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https://lattes.cnpq.br/0648227163171734
Nous proposons une lecture de certains aspects des deux pensées de Deleuze et de Bergson, ainsi que de leur rapport, à la lumière du problème de l instauration philosophie. Il s agit de dramatiser une dispute entre les deux philosophes qui s exprime à travers une divergence entre deux problèmes. D un côté, le problème principiel par lequel Bergson aurait entreprit la restauration de l ontologie, en substituant au principe figé, éternel et transcendant de la metaphysique grecque, le principe mouvant, temporel et immanent d une métaphysique renouvellée. D un autre côté, le problème pratique par lequel Deleuze rend à la philosophie sa puissance instaurative, en ressonance avec d autres pratiques (art, sciences, droit, etc.). Il en découle deux performances ou deux modes de fonctionnement divers de la machine à penser : la spéculation et l instauration. Si nous comprénons la pensée dans son rapport de tension avec le chaos, sa performance spéculative cherche à s‟en protéger à travers un principe. La performance instaurative exige la plongée de la pensée dans le chaos pour y tracer plan qui se tient dans une station athlétique, irréductible aux opinions, inattribuable à un principe. Ce n est qu à cette condition que la pensée fait oeuvre. Finallement, en impliquant des rapports non seulement avec les champs physique, organique et psycho-sociaux, mas avec la Terre, notre analyse devient géophilosophique et opère un décentrement qui doit la conduire, par delà les deux marges de la philosophie, la Grèce (forme du passé) et l Occident (forme du présent), à une troisième marge : instauration de l Île-Brésil (forme du futur).