Browsing by Issue Date, starting with "2019-08-09"

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Metabolomics-based studies assessing exercise induced alterations of the human metabolome: a systematic review
(Universidade Federal de São Carlos, 2019-08-09)
Sakaguchi, Camila Akemi
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Nieman, David Christopher
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Signini, Étore De Favari
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Abreu, Raphael Martins de
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Catai, Aparecida Maria
Influence of surface treatments on corrosion resistance properties of ultrafine grained titanium alloys for biomedical applications
(Universidade Federal de São Carlos, 2019-08-09)
Pérez, Diego
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Moreira, Alberto
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https://lattes.cnpq.br/6360362248108490
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Botta Filho, Walter José
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https://lattes.cnpq.br/8956458007749112
Titanium and its alloys are used as biomaterials because their excellent combination of high corrosion resistance, low modulus of elasticity and biocompatibility. However, titanium and its alloys cannot meet all the clinical requirements. In this sense, in order to improve the electrochemical and bioactive properties, this thesis aims to evaluate the effect of the severe plastic deformation as well as the surface modification treatments on the corrosion resistance and bioactivity of titanium alloys (α' + β) and (β). The titanium alloys, Ti13Nb13Zr (α' + β) and Ti35Nb7Zr5Ta (β), were deformed by the high-pressure torsion (HPT) method. Afterward, surface modification treatments, such as the anodization and chemical treatments, were carried out both in samples non-deformed and deformed by HPT. Finally, corrosion and bioactivity tests were performed in simulated body fluid (SBF). The tests were performed on samples with treated surfaces compared with non-treated surfaces in the deformed and undeformed conditions. The samples’ microstructures were analyzed by confocal laser microscopy (CLM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Hardness tests were also performed after the HPT process. On the other hand, surface modification treatments, and the formation of apatite in bioactivity assays were evaluated by scanning electron microscopy (SEM), with chemical analyzes carried out by dispersive energy spectroscopy (EDS) and phase identification by X-ray diffraction (XRD). In general, the corrosion resistance of the titanium alloys improved with the anodization treatment. Apatite deposits were observed on Ti13Nb13Zr alloy samples, in the conditions non-deformed and deformed by HPT. The Ti35Nb7Zr5Ta appears to have a lower apatite-formation ability compared to Ti13Nb13Zr.
Cultura e transformação: entre casas e coisas no mundo Xavante
(Universidade Federal de São Carlos, 2019-08-09)
Andrade, Marcos Vinicius de Almeida
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Cohn, Clarice
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https://lattes.cnpq.br/1714080901123094
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https://lattes.cnpq.br/3062561498527611
In the past decades, public policies in the most diverse areas have been formulated for indigenous peoples. These policies, often engendered by imperatives of national development, are not always congruent with the singularities of these peoples. This paper proposes an anthropological research about the situation found among the Xavante indigenous people, in which the construction of housing promoted by political programs like PNHR and MCMV causes a lot of criticism and questioning by part of the supposed benefited ones, putting in evidence a complex entanglement of relations that are produced from the Xavante modes of inhabiting the enviroment. From an ethnographic case, audiovisual productions and literature review on the Xavante, this research is intended to highlight the multiple relationships established between these people and the myriad of beings who co-inhabit the world, presenting as houses, bodies and things are related to culture and historical transformations, serving to operationalize reflections about themselves and others.
Desenvolvimento de filmes de amido incorporados com cera de abelha por casting contínuo
(Universidade Federal de São Carlos, 2019-08-09)
Luchesi, Bruno Ribeiro
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Moreira, Francys Kley Vieira
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https://lattes.cnpq.br/7156680316782417
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Marconcini, José Manoel
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https://lattes.cnpq.br/5373845785326215
Starch films appear as an alternative to problematic non-biodegradable plastic films; however, they have low water resistance and require the addition of a hydrophobic component to be viable substitutes for non-biodegradable films. Beeswax is a biodegradable and hydrophobic substance, mostly composed of esters, hydrocarbons and fatty acids. In this context, the objectives of this work were to reduce the interaction of corn starch films with water through the incorporation of different levels of beeswax and evaluate the surface hydrophobicity and the water vapor permeation properties of these films. The films were obtained via continuous casting to establish a pre-pilot processing scenario. The application of continuous casting to obtain the starch/beeswax films resulted in a productivity, at least, 50 times greater compared to the conventional bench casting reported in the literature. Advanced scanning electron microscopy images showed the immiscibility of the beeswax domains and the starch matrix, sufficient to alter the interaction of light with the films, reducing their transparency and clarity and increasing their opacity. In addition, these domains induced the starch matrix to crystallize even with the reduced crystallinity of the wax in the domains. The interaction between the wax and the starch, suggested by ATR-FTIR, directly influenced the properties of the films. The tensile strength was reduced by 39%, the maximum and at break elongation were reduced by 60% and 58%, respectively, while the elastic modulus increased by 327% with the wax content. Finally, the addition of increasing levels of beeswax increased surface hydrophobicity by 100% and reduced the water vapor permeability of the films by 200%, reaching the goal of making them less susceptible to the effect of moisture.
O processo de elaboração do luto e as respostas ocupacionais no cotidiano de mães enlutadas
(Universidade Federal de São Carlos, 2019-08-09)
Dahdah, Daniel Ferreira
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Joaquim, Regina Helena Vitale Torkomian
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https://lattes.cnpq.br/7719481657895650
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https://lattes.cnpq.br/5331569022443995
INTRODUCTION: Bereavement is a process that occurs with the loss, by death, of a significant person. This is a painful experience that leads to the need to adapt to the new situation. Maternal bereavement becomes peculiar because it reverses the expected cycle of life, generating feelings of guilt and shame, accompanied by grief and the feeling of having failed in the role of mother. Occupations change during the bereaved process, as their constituent elements - doing, being, becoming and belonging – are affected, causing a crisis in maternal daily life. AIM: To understand the bereaved mothers’ occupations in their everyday life. METHOD: A cross-sectional, exploratory and qualitative study that used the Oral History technique, in the biographical narrative modality. The inclusion of the participants came from a group of mutual aid and selection, by the “snowball” technique. Ten mothers are included in the study. The data were generated from three collection instruments: field diary, timeline, and semi-structured interview. The results were categorized and analyzed by content analysis using deductive and inductive methods. RESULTS: In the field diary, the main topics addressed in the mutual help group were recorded. The timeline allowed us to visualize the “birthday reactions” and to identify, chronologically, the mothers' experience during the dates associated with bereavement. From the interviews, six categories emerged: The notification of the death of the son; The experience of motherhood before and after the death of the son; The meanings constructed by mothers after the death of their son; The future; Religiosity and spirituality helping to coping with bereavement; and, Occupational responses in the face of changes imposed on the everyday lives of bereaved mothers after the death of their sons. From the results, it was possible to systematize the occupational responses in the daily lives of bereaved mothers. DISCUSSION: Triangulation was used as a methodological strategy to broaden the understanding of the studied phenomenon. Identified that mothers perceived their personal and spiritual growth, found meaning and benefits in loss, did the changes in identity necessary to continue life. Also, they regain familiarity with their surroundings and was able to live authentically in everyday lives, enabling them to felt happy again. The results reaffirmed the bereavement process as a singular and individual experience, however, intensely permeated by social aspects, and mainly related to social and emotional support for coping with the bereavement. The study contributed to the understanding of the process of adaptation to bereavement through the occupational responses in maternal everyday life. Thus, depending on the form, purpose, and meaning of the occupational responses presented after to the death of the son, it was possible to categorize them into adaptive strategies that help the mother to adapt occupationally in everyday life. Besides, they support the reconstruction of meanings in response to bereavement and changes in everyday life and occupations. They also allow revisions about themselves, about desires, priorities, and the continuity of life in the world profoundly modified by the reality of the son's death. CONCLUSION: The occupational therapist, by identifying the elements of the bereavement adaptation process, assists the mothers in the reconstruction of the occupational meanings, in the encounter with the familiarity of the environment and in the accomplishment of the necessary changes for the continuity of life, repositioning in practical and emotional terms the absence of the deceased son in everyday life.
Etnografia de uma lei: o ensino de história e cultura afro-brasileira e indígena
(Universidade Federal de São Carlos, 2019-08-12)
Santos, Tamires Cristina dos
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Cohn, Clarice
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https://lattes.cnpq.br/1714080901123094
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https://lattes.cnpq.br/9141182153364129
The Law and Directives for the Brazilian Educational System (Lei de Diretrizes e Bases da Educação Nacional/LDB), promulgated on December 20, 1996, which establishes national educational guidelines for the contents of the curricula of the public and private schools network in Brazil, was amended by Law 10.639/2003 and subsequently by Law 11.645/2008, establishing respectively the obligation to teach and learn about the History and Culture of Afro-Brazilian, African and Indigenous Peoples of Brazil in Basic Education. This ethnographic research sought to establish a dialogue with different agents who, directly or indirectly, were part of the process that established the law 11.645. From the fieldwork carried out at SECADI / MEC with its Technicians in Educational Affairs, documents collected in the MEC, and conversations with Indigenous leaderships, the aim was to learn about different discourses and practices that are mobilized around the law.
Resolubilidade contínua e singularidades removíveis para a equação divergente
(Universidade Federal de São Carlos, 2019-08-12)
Biliatto, Victor Sandrin
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Moonens, Laurent
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https://lattes.cnpq.br/0480536204428583
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Picon, Tiago Henrique
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https://lattes.cnpq.br/7853908129934448
In this text we study some results obtained by Nguyen Cong Phuc and Monica Torres in the paper "Characterizations of the Existence and Removable Singularities of Divergence-measure Vector Fields" regarding the characterisation of solutions and removable singularities of the equation div F = u, where u is a measure and F is a continuous or Lp vector field. To perform this study, the text presents definitions and properties on divergence-measure vector fields, Hausdorff measures, Sobolev capacity and functions of bounded variation.
Avaliação da relação entre a resistência ao cisalhamento e a resistência à compressão paralela às fibras de madeiras do grupo das folhosas
(Universidade Federal de São Carlos, 2019-08-12)
Couto, Natalia Garcia
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Christoforo, André Luis
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https://lattes.cnpq.br/7623383075429186
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https://lattes.cnpq.br/5723156281267812
Wood presents several advantages when compared with other materials employed in the civil construction sector. In Brazil, the standard ABNT NBR 7190: 1997 establishes test methods to determine physical and mechanical properties. However, tests demands procedures on specialized and high-cost laboratories. The Brazilian code displays different values for relations between shear strength and compression strength parallel to the fibers. This study aimed to investigate, considering the results of the compressive strength and shear strength parallel to the fibers tests, the relationship between these properties obtained with the statistical assistance of least square method and considering ten hardwood wood species. The results were compared with the relationship values disposed on the Brazilian Code ABNT NBR 7190:1997, being the greatest coefficient found 86,4% higher than the coefficient presented by the Brazilian code, considering the set of all species. Regarding the variation of the relationship between the investigated properties, considering the different classes of wood resistance, no study was identified that decreases in the values of the greatest coefficients as the classes increases, a situation that ABNT NBR 7190: 1997 exposes in its text, thus presenting another divergent result.
Panorama nacional dos estudantes público-alvo da educação especial na educação superior
(Universidade Federal de São Carlos, 2019-08-12)
Rocha, Luiz Renato Martins da
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Lizzi, Elisângela Aparecida da Silva
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https://lattes.cnpq.br/8487600124864253
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Lacerda, Cristina Broglia Feitosa de
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https://lattes.cnpq.br/9468232016416725
The target group of learners with special educational needs (SEN) in Higher Education totaled 37,927 of the 8,027,297 enrollments in 2015, corresponding to 0.47% (INEP, 2015b). It should be noted that, despite the small percentage, this public has been growing significantly in Higher Education in recent years, which indicates the constant need to create even more effective policies to guarantee access: admission, stay and institutions of higher education (HEI). In this sense, the data collected in the present research provide indications of how the Special Education in Higher Education in Brazil offers an opportunity for revision and orientation regarding the recognition and registration of SEN students in the Higher Education Census. Thus, we aimed to analyze and map SEN students in Higher Education in Brazil, taking as a data source the year 2015 and, more specifically, presenting a panorama of Higher Education based on the microdata of the Higher Education Census. In order to reach the proposed objective, we carried out a quantitative research with a descriptive and exploratory method. Data were processed using the SAS® program (Version 9.2) and software R (Version 3.3.1), which enabled access to the microdata through tables. Through Microsoft Office Excel®, the graphs and other tables were assembled, as well as the verification of the values found. As we understand that behind each of these numbers there is a life story, we perform its interpretation in the light of their interaction with the historical and social context. We also identify the imprecision of various data, usually due to misunderstandings in the collection of information (which may be caused by self-declaration or by those who feed such data in the INEP system), or by the impossibility of correcting data once informed and published, which generates distortions of information in relation to reality. In addition, despite the limitations of the data, it is clear that the SEN students are disadvantaged in relation to other people, since the conclusion of the course is still a challenge to be overcome, and access has been restricted to a small portion. For a better overview of Brazilian Higher Education, it is necessary to construct a data collection instrument at the national level, so that, at the time of the student's enrollment in the IES, all the information related to their condition is duly considered and the data presented in the Census indeed express a reliable picture for the construction of public policies.
Registro em prontuário: compreensão do processo de ensino aprendizagem no âmbito da Terapia Ocupacional em contextos hospitalares
(Universidade Federal de São Carlos, 2019-08-12)
Bombarda, Tatiana Barbieri
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Joaquim, Regina Helena Vitale Torkomian
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https://lattes.cnpq.br/7719481657895650
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https://lattes.cnpq.br/8070700589653226
The medical record, designated as a collective construction derived from multiple specialized registries, shows the assistance procedures performed and aim at improving the quality of attention to the user. In Occupational Therapy, the medical records aim to reflect the professional reasoning and chronologically enable the visualization of the course of the therapeutic intervention and the occupational performance of the patient throughout the care process. Despite the great importance, the record in medical records presents as an unexplored topic in the scientific field of the Brazilian Occupational Therapy. With the objective of identifying and understanding the teaching-learning process of the medical records in the hospital context existing in the undergraduate courses in Occupational Therapy in Brazil, this quantitative-qualitative study was delineated in two stages: a) documentary research - that consisted in the survey and analysis of documents referring to theoretical disciplines and of professional training of hospital contexts offered by undergraduate courses in Occupational Therapy in Brazil, b) field research - application of an online questionnaire with teachers responsible for occupational therapy disciplines in hospital contexts and students in the practice of a vocational training in the hospital. The data obtained were analyzed by descriptive statistics and discourse of the collective subject. As results, it was verified that the analyzed documents do not gift contents that sustain the practice of documentation, however, students and teachers generally signal, to carry out assessment, intervention and discharge records in accordance with the items recommended in legislation. As fragile aspects of the records, the occupational therapeutic diagnosis and the prognosis were identified. It was verified that the process of teaching-learning of the record in the medical record occurs mostly linked to the activities of professional training, which can be problematic when observed the information that not all students practice internship in the hospital field and that there are students who have access only for medical records. The main teaching-learning strategies employed in undergraduate courses were the discussions of clinical cases and supervised practices, with the main difficulties encountered in this process being the difficulty of access to the medical records, coupled with the dynamics of the service and the lack of standardization in the terminology of the profession. It is believed that the low frequency of insertion of information on prognosis in the medical record correlates with the specificities of the hospital field and that the scarce insertion of the occupational therapeutic diagnosis is linked to the absence of national discussion about this elaboration. Regarding the teaching strategies adopted, it is believed that these are aimed at instigating the development of professional reasoning and reflective critical capacity in relation to intervention, a factor that may contribute to the qualification of the medical record, given the better perception of the role of the occupational therapist and his praxis in the hospital. It is concluded that in general there are weaknesses in the teaching-learning process of the record in medical records, a factor that demands investments in the qualification of training for the documentary practice, which will favor better recognition of the profession
Selective laser melting of a biocompatible Ti-35Nb-7Zr-5Ta alloy
(Universidade Federal de São Carlos, 2019-08-12)
Batalha, Rodolfo Lisboa
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Gargarella, Piter
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https://lattes.cnpq.br/4641435644243916
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Kiminami, Claudio Shyinti
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https://lattes.cnpq.br/5443002033733395
Neste trabalho, estudou-se uma nova rota de fabricação de peças de uma liga biocompatível. Assim, uma liga Ti-35Nb-7Zr-5Ta (% em peso) biocompatível foi processada por fusão seletiva a laser (FSL). Os principais parâmetros de FSL foram determinados para a liga, expandindo o portifólio de materiais fabricados por FSL. Considerando que a composição da liga estudada era relativamente nova quando se trata de FSL, algumas amostras foram produzidas por fundição em coquilha de cobre. As propriedades do pó da liga foram analisadas e trilhas simples foram depositadas de forma a definir o melhor conjunto de parâmetros para produzir amostras compactas com densidade relativa de 99,0%. As características microestruturais das amostras da liga TNZT produzidas por FSL foram investigadas, e observou-se uma estrutura de solidificação colunar-dendrítica, enquanto nas amostras fundidas se obteve uma estrutura dendrítica de grãos equiaxiais. Uma estrutura monofásica Ti-β foi identificada nas amostras de FSL, enquanto que uma matriz de Ti-β com ripas de martensita α” foi observada nas amostras de fundição. A análise EBSD das amostras construídas por FSL mostrou grãos colunares crescendo epitaxialmente através de várias camadas, com direção preferencial do crescimento de grãos, diferentemente da estrutura de grãos sem orientação preferencial observada nas amostras de fundição. As amostras de FSL apresentaram resistência mecânica ligeiramente inferior do que as amostras fundidas em coquilha, relacionado a estrutura de grãos nas amostras produzidas por FSL. A formação de textura cristalográfica foi avaliada por meio da construção de cilindros por FSL com diferentes orientações, resultando em estruturas distintas de grãos e texturas cristalográficas. Em seguida, alguns protótipos foram fabricados, comprovando a viabilidade de fabricar peças de uma liga biocompatível com geometria complexa pelo FSL. Finalmente, foi proposta uma alternativa para maximizar as propriedades pseudoelásticas da liga Ti-35Nb-7Zr-5Ta (% em peso), e uma abordagem inovadora é proposta com a formação de uma estrutura oligocristalina, combinando manufatura aditiva a um tratamento térmico isotérmico simples.
Uma estimativa do tipo L1 para potencial de Riesz
(Universidade Federal de São Carlos, 2019-08-13)
Hoshijima, Raphael Shoji
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Picon, Tiago Henrique
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https://lattes.cnpq.br/7853908129934448
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https://lattes.cnpq.br/4530308841428767
In this work we will present a L1-type estimates for the Riesz potentials envolving the Riesz transform. This estimate is an improvement of result due to Stein and Weiss the result of Stein and Weiss that provides Riesz potentials is bounded in Hardy space. Such estimate was proved by Armin Schikorra, Daniel Spector and Jean Van Schaftingen in the paper “An L1-type estimate for Riesz potentials”, published in the Revista Matemática Iberoamericana in 2016.
Um estudo da Blockchain aplicado ao contexto dos dados de pesquisa
(Universidade Federal de São Carlos, 2019-08-13)
Ouchi, Marcos Teruo
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Arakaki, Ana Carolina Simionato
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https://lattes.cnpq.br/9896600626524397
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https://lattes.cnpq.br/4500649569193100
The possibility of scientific discussion is the core of the practical research routine and, for this, researchers must find sufficiently detailed resources and descriptions in the published papers in order to obtain the same results within the enough margins of experimental errors. Among the available resources, the data collected during the research e summing it is essential, because the result obtained should be the product of its rigorous analysis. In this scope and associated with distributed consensus mechanisms, the Blockchain data structure can ensure data reliability in a transparent, decentralized and immutable way, and emerges as a possibility to contribute to the progress of science through new ways of processing large amounts of data collected in a scientific research. In this sense, the general objective of this work is to analyze Blockchain technology and its possibilities inserted in scientific communication and research data management. The specific objectives are to describe the management of research data and the data lifecycle; identify the main concepts, structure and functioning, related to Blockchain technology; and point out Blockchain technology and its potential applications in Science. This is an exploratory and theoretical research of qualitative character. The results present the survey conducted on Scientific Communication and its relationship with Information Science, focusing on the importance of data management and metadata for the description of research datasets, and their impact with Blockchain. It is considered that the moment is premature to affirm that Blockchain or any of the technologies in its surroundings, in its current stages, will solve all problems related to the reproducibility crisis. In the short term Blockchain is likely to be applied to specific points in the flow of scientific research helping to resolve mistrust in the data and methodologies used. Since the applications related to the theme are still in embryonic phases of development, implementation and acceptance, it is not even possible to affirm that their implementations are close to the objectives to which they were designed, thus enabling numerous opportunities for research and developments for Information Science.
Avaliação do padrão Simple Knowledge Organization System (SKOS) para a representação de vocabulários controlados
(Universidade Federal de São Carlos, 2019-08-13)
Sousa, Janailton Lopes
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Ramalho, Rogério Aparecido Sá
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https://lattes.cnpq.br/5602653417743793
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https://lattes.cnpq.br/0207144049736436
Knowledge Organization System (KOS) are information resources representation tools used in Information Science, the KOS background includes the study of the concepts and use of digital technological instruments. The Simple Knowledge Organization System (SKOS) represents this junction between the KOS theoretical foundation and its conceptual frameworks, with the use of digital representation tools, favoring the representation of a traditional KOS in digital environments. However, the increase in controlled vocabulary publications, available in digital environments, points to the need to identify new evaluation procedures for these instruments. In this sense, the general objective of this research is to identify evaluation parameters of the SKOS standard, for the representation of controlled vocabularies. This research is theoretical and methodological, with a qualitative approach and exploratory character, which aims to examine the themes of representation, organization, semantic technologies and vocabulary availability in digital environments. As a result of this research, evaluation parameters are presented that can be applied in SKOS-coded vocabularies, thus serving as a reference source that can assist research in this theme. It is concluded that the difficulty of evaluating controlled vocabularies is still present, in this sense, the use of parameters that can help this process contributes to the advancement of discussions that include this theme in the field of study of the Knowledge Organization.
Diversidade e potencial biotecnológico da comunidade bacteriana associada ao pinhão-manso (Jatropha curcas L.)
(Universidade Federal de São Carlos, 2019-08-13)
Machado, Paula Cristiane
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Sousa, Cristina Paiva de
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https://lattes.cnpq.br/9002619114161319
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Lacava, Paulo Teixeira
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https://lattes.cnpq.br/8947678349043750
The present work was developed from four objectives: (1) biochemical characterization of 63 rhizobacteria, associated with Jatropha curcas, as for potential for promoting plant growth and enzyme production; Of these isolates, 27% tested positive for biological nitrogen fixation, 73% produced IAA and 69% solubilized inorganic phosphate. Regarding the antagonism test the rhizospheric isolates showed antagonistic activity with potential for biocontrol of the following phytopathogenic fungi: Alternaria alternata (39%), Colletotrichum sp. (42%), Fusarium oxysporum (30%) and F. profileratum (36%). In vitro enzymatic activity tests revealed that 30% of rhizobacteria showed amylolytic, 19% cellulolytic, 40% sterolytic, 26% lipolytic, 30% pectinolytic and 70% proteolytic activity. Among the 27 bacterial isolates identified by partial sequencing of the 16S gene, the presence of Bacillus genera was observed; Chryseobacterium; Enterobacter; Klebsiella; Pseudomonas; Serratia and Staphylococcus. (2) Characterization and comparison of diversity by metagenomic analysis of the bacterial community of jatropha rhizospheric soil from three treatments: non-irrigated / dryland; drip irrigation and pivot irrigation. Where it was possible to identify in the samples, sequences of Acidobacteria and Chloroflexi phyla, 4 orders (Acidimicrobiales, Chthoniobacterales, Gaiellales and Rhodospirillales), 7 families (Solibacteraceae, Chitinophagaceae, Acidobacteriaceae, Tepidisphaeraceae, Nitrosomonadaceae, Gemmatimonadaceae and Xanthobacteraceae and 8 genera, Acidothermus, Bacillus, Bradyrhizobium, Bryobacter, Reyranella, Sphingomonas, Steroidobacter and Variibacter. There was no significant increase in diversity in any evaluated treatment. However, species richness was increased in the drip and pivot areas when compared to the non-irrigated area. The bacterial groups that differed significantly between pivot irrigated treatment and rainfed treatment are the Bryobacter genus and Filo Chloroflexi. (3) Evaluation of plant growth promotion of maize (Zea mays) in greenhouse when inoculated with bacteria endophytically isolated of Jatropha curcas. These bacteria were considered potentially positive in the previously performed in vitro biochemical characterization in relation to the potential of plant growth promotion of these isolates. It was not possible to prove the ability to promote growth under greenhouse conditions by the transmission of only endophytic bacteria by seeds evaluated in the proposed methodologies. (4) Evaluation of the antagonistic potential of Jatropha-associated bacteria with potential to control the development of three species of Lasiodiplodia subglobosa, L. euphorbicola and L. pseudotheobromae, phytopathogenic to Jatropha. We evaluated 135 bacterial isolates associated with Jatropha curcas as their ability to inhibit the growth of phytopathogens. 36 isolates (26,67%) had good rates of antifungal activity. Eight isolates (5,9 %) were shown to inhibit in vitro growth above 75%. phytopathogen, especially the rhizospheric isolates of the genera Pseudomonas sp. and Bacillus subtillis.
Avaliação da qualidade dos serviços de suporte em Tecnologia da Informação em uma Instituição Federal de Ensino Superior
(Universidade Federal de São Carlos, 2019-08-13)
Farrapo Junior, Antonio Carlos
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Mergulhão, Ricardo Coser
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https://lattes.cnpq.br/0598720328915137
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https://lattes.cnpq.br/9838737131099013
The assessment of the information technology service quality provided by private or public organizations to its internal clients is an essential requirement to achieve a competitive advantage. The present study aimed to evaluate the quality of information technology support services in a federal higher education institution (IFES) and to analyze how quality in services, with its dimensions, is related to satisfaction, in the context of IT service management in an IFES. Therefore, a systematic literature review on quality assessment models in IT services was performed, which provided the theoretical basis for operationalizing the SERVQUAL instrument. After the theory articulation, a survey was conducted where the sample was obtained with a respondent rate of 37% of the population of 271 users. Data analysis was performed using descriptive statistics and structural equation modeling technique, which supported the refinement of the instrument. The results exposed gaps in the five dimensions of quality during evaluated services. The dimensions of empathy and reliability reached the highest values. It was further observed that the quality of services, with their respective dimensions, positively influences user satisfaction. IT-based SERVQUAL proved to be adequate for assessing the IT support service quality provided by an IFES. Aforementioned allows the instrument to be applied as a reference by other IFES to improve IT service management. Additionally, the research reinforces the existence of a positive relationship between service quality and satisfaction, allowing managers to properly allocate available resources.
Estudo da indução da grafitização da resina fenólica fenol/formaldeído
(Universidade Federal de São Carlos, 2019-08-14)
Renda, Carmen Greice
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Lucas, Alessandra de Almeida
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https://lattes.cnpq.br/9754332336954137
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https://lattes.cnpq.br/1758443823834471
Among the probable carbon sources, there are the polymers, as the phenolic resin, which produces residual carbon around 60% wt./wt. after thermal treatment. It is classified as non-graphitizable, because it has not graphitic lamellaes until temperatures between 2600°C and 3000°C. To organize carbon in temperatures around 1000°C, the catalytic graphitization was suggested, where the phenolic resin receives metallic and/or inorganic agents. Thus, three resins received the agents (ferrocene, boric acid and exfoliated graphite) and they were compared, in specific conditions of processing, to induce turbostratic or graphitic structures. Turbostratic structures have organization beyond 1 nm and graphitic fragments or graphene sheets stacked in almost parallel organizations. Graphitic structures have parallel sheets stacked. Phenolic resins with any graphitic organization would be useful in refractories or for technological applications, depending on the agents used for this induction. Materials with higher lamellae organization could reduce production costs, polydispersivity and increase their efficiency. The study was divided in three stages. In the first stage, some of the proposed procedures proved viability to this route. The best results of the organization level were between 58 and 61% and were obtained for the ferrocene agent, with thermal treatment with more isothermic steps until 1000°C/5h. After the second treatment, until 1400°C/5h, were between 60 and 65%. In the second stage was evaluated the mixing procedure in the carbon organization, the higher organization (70%) was inducted with laboratory stirrer and ultrasonic mixer, with the synthesized modified-novolak resin and ferrocene. In the third stage, the systematically evaluating the thermal decomposition of ferrocene showed phases with carbon (amorphous, turbostratic and graphitic) and with iron (hematite, maghemite, cementite and gamma-iron) and structures type hollow-like onion carbon with magnetic properties were obtained. The results open new possibilites of applications in materials engineering.
Influência dos textos de notícias na queda de preços no mercado de ações brasileiro
(Universidade Federal de São Carlos, 2019-08-14)
Duarte, Juvenal José
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González, Sahudy Montenegro
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https://lattes.cnpq.br/9826346918182685
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https://lattes.cnpq.br/7979293677056269
Forecasting financial losses and making decisions to avoid or reduce them has been a challenge for every investor. On one hand, due to the availability of data and its simple implementation, technical analysis methods have been quickly gaining supporters. On the other hand, modern computers processing power together with advances in text mining provides the opportunity to explore the investor’s behaviors in new data types: textual. This research evaluates the relationship between the Brazilian stock market and news published on national midia, focusing on automatic search for patterns related to down movements using machine learning algorithms. Six experiments were performed to analyze the possibility of predicting price falls automatically, followed by case studies in the search of explanations from the classifiers that justify the predictions.The results show that text mining based approaches overcome traditional strategies when forecasting losses, but the underlying patterns understanding is limited due to the complexity of the classifiers and high dimensional vocabulary.
A tipologia moral na filosofia de Nietzsche
(Universidade Federal de São Carlos, 2019-08-14)
Souza, Israel Fabiano Pereira de
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Gaspar, Francisco Augusto de Moraes Prata
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https://lattes.cnpq.br/0406230537993999
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https://lattes.cnpq.br/3374191772172408
This study is an attempt to understand the importance of developing a typology within the moral reflections proposed by Nietzsche. We understand that typological analysis is primarily a way of moving away from metaphysical thinking, as well as from an absolute generalization of concepts and values held by universals. Moreover, moral types are, we believe, in line with the Nietzschean view of reality, which is characterized by a plurality of meanings and values, which are embedded in a constant becoming and do not allow the existence of the axiological and conceptual crystallization desired by metaphysics. This view fits in with the Nietzschean concepts of will to power and perspectivism that we believe are fundamental to understanding why Nietzsche points to the need to erect a moral typology. Finally, we must think of moral typology as the product of genealogical research. It is from moral genealogy that we gain insight into values and morals through their importance or harm to life. Types in this context are expressions of a certain form of life, whether ascending or degenerate.
Educação e tecnologias digitais no contexto das escolas públicas do estado de São Paulo: um estudo no campo CTS
(Universidade Federal de São Carlos, 2019-08-14)
Falcão, Patricia Mirella de Paulo
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Mill, Daniel Ribeiro Silva
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https://lattes.cnpq.br/1515286597269486
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https://lattes.cnpq.br/0619543628213855
During the last decades, several studies point for a new Society shaped and framed through the optical of a digital culture. New devices emerge in a high speed, precluding the updating of the most adventurers. In front of this apparent digital society, new languages, symbols and signs receive several configurations. Because of it, the inclusion as the exclusion is present. For this new configuration of idealized society, the digital devices make a part of the everyday life as sensory extension of the human being. One of the problematics from the digital culture is the exacerbated spread of information, between real and true, and how to change them, once they digress and dominate the minds, especially of the youngers, about knowledge. Would the public school be included or excluded of this new device? In front of this, the present search aimed understanding how and if it happens, in the public-school group of São Paulo state, specifically in the elementary school, the teaching of subjects trough the digital technologies. The study showed as the general objective map, if the Science teaching should be effectively through the digital technologies. Besides the general objective, four specified objectives were created, like: analyze laws, provisional measures, decrees and other official documents of state bodies that legislate about education in Brazil, mainly the Federal Government, about the guidelines for the Science and technology teaching; catalogue schools to map and analyze which the researches, of infrastructure, human and economic are reserved for the process of the teaching through the digital technologies, confer and describe if in the elected institutions put or are putting some public program about incentive or broked teaching, as the teachers involved in the process, their abilities, knowledge and formations to teach their subjects, characterize what is the students vision about the learning through the digital technologies, and understand what they think about the broked process and about the subjects. Besides, what is the proportion that these technologies take in their lifes as confering their knowledges and abilities about them. Analyzing the search fulcrum, the methodologic triangulation was realized through the interview with three different groups: a. students of elementary school; b. teachers of public schools; c. manager- teacher that knows about the Federal Government jobs about digital technologies at school. So, qualitative and quantitative analyses were done during the purposed study. The analyses point that there is a strong speech that, for conception, treats the children and adolescents as native digitals in a slant of knowledge about digital technologies. But, these knowledges are in the most about games and social groups, besides entertainment things, so, it’s not real. About the teachers, the search shows they frequently confuse the meanings about the broking through digital technologies, and those that searches a broked process, what they do only, once that we conclude school is suboptimal about digital culture. Finishing, the study points there is a big abyss among what the Federal Government speaks, its actions and the effective inclusion of the public schools in digital culture. Besides important questions that involve the digital Technologies in a social and historic slant, that aren’t worked. We conclude the possibilities of field studies STS need to be discussed as a way for inclusion of the school technologies, since the basic education.