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A memória na aprendizagem matemática
(Universidade Federal de São Carlos, 2014-01-29)
Ferraz, Juliana Schlatter de Lima
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Peixoto, Magda da Silva
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https://lattes.cnpq.br/0413910306376054
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https://lattes.cnpq.br/8296439306806022
The present work arose from a need to better understand the cognitive of students, not only as students, but as human beings. To do so, through a bibliographic research in neurology, psychology and pedagogy in order to understand the process of memorization, what types of information are more easily remembered and what can assist in this process. Furthermore, it approaches some concepts that may have lost its meaning in the routine usage, e.g. the concept of intelligence. A brief study of students and implementation of activities aimed at diagnosing the functioning of working memory was also done.
Modelagem computacional de estruturas de poços quânticos semicondutores para dispositivos optoeletrônicos e spintrônicos
(Universidade Federal de São Carlos, 2014-01-29)
Bezerra, Anibal Thiago
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Studart Filho, Nelson
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https://lattes.cnpq.br/0451310772113076
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https://lattes.cnpq.br/8478305453281130
In the present thesis, we realize a computational modeling of semiconductor structures based on multiple quantum wells with filter barriers and on quantum wells with semiconductor diluted magnetic layers. We numerically solve the time-dependent Schrödinger s equation within the effective mass approximation, using the Split Operator method. Through the time evolved wave functions we access the dynamics quantities as the light assisted couplings of the states, in which the light is described by the inclusion of an oscillating electric field in the Hamiltonian. Then we determine the probabilities of absorption, oscillator strengths of the intersubband transitions induced by the light. Moreover we analyze the transmission probabilities and, in special, the system s photocurrent. The eigenstates and the eigenfunctions of the stationary states are also obtained within the method by simply making an imaginary time evolution. In the first work, the photocurrent of a multiple quantum well structure with filter barriers modulating the continuum above the wells was analyzed as a function of the applied bias. We find out an interesting dependence of the photocurrent with the applied field, as a differential negative photoconductance controlled by the field. We attribute this negative conductance to the interaction between the localized and extended states in the continuum, expressed by anticrossings between these states and the enhancement of the photocurrent at the crossings by the Landau-Zener-Stückelberg-Majorama like transitions. In the second work, it was evaluated the spin polarized photocurrent arising from quantum well s structures of GaMnAs, under light, electric and magnetic fields of few teslas. The study shows the existence of spectral domains in the THz ranges for which the proposed structure is strongly spin selective. For such photon frequencies, the photocurrent is spin polarized and the application of the external electric field reverts the polarization s signal. This behavior suggests the possibility of conveniently simple switching mechanisms. The physics underlying these results is studied and understood in terms of the spin-dependent coupling strengths emerging from the particular potential profiles of the heterostructures. We present two additional works related to the main ones. In the first additional one, we evaluated the dark current of the multiple quantum well structure with and without filter barriers. For doing this, we add totally the transmission probability through the structure in the Levine s model for the dark current. We observe that dark current is considerably reduced for the structure with the filter barriers when compared to the structure without these barriers. In the second additional work, we calculate the photocurrent in a ZnMnSe structure. We observe the generation of a spin polarized photocurrent controlled by the external electric field, as in the case of the GaMnAs structures.
Os mecanismos de mudança isomórfica e respostas estratégicas aos processos institucionais: estudo em organizações hospitalares do município de Taquaritinga-SP
(Universidade Federal de São Carlos, 2014-01-30)
Silva, Gislaine Aparecida Gomes da
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Truzzi, Oswaldo Mário Serra
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https://lattes.cnpq.br/5005536921435787
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https://lattes.cnpq.br/1009108363227114
The evolution of the concept of hospital has provoked changes on the focus of the provision of health services and, consequently, on its management (STUMPF, 1996). As a result of these changes, it is important to understand the construction of the institutional arrangements of the medical organizations from the evolution of the concepts of Organizational Theory and, particularly, of the concepts of the new institutionalism. Machado-da-Silva and Gonçalves (1999) state that in parallel to the stage of institutionalization there is the need to consider the mechanisms of isomorphic change and the influence exerted by the environment. The aim of this study was to elucidate the mechanisms of change that compete for the isomorphism in two hospital organizations in the town of Taquaritinga-SP as well as identify the strategic responses that are undertaken by such organizations in the face of institutional pressures, from the constructs of DiMaggio and Powell (1983), in organizational level, and Oliver (1991). Questionnaires and interviews were used as data collection technique, characterized as qualitative-quantitative research. In order to understand the significant transformations that impact hospitals, a case study was carried out to evaluate the counterpoints and limitations of theoretical approaches in the structure of the organizations analyzed, comparing the results obtained, what contributed substantially to the description of the institutionalization of hospital practices focused. The mechanisms of isomorphism were established, which were present in different intensities in both organizations and was also noted the divergence between them related to strategies against such practices. Considering the limits of the survey, it was concluded that although there is no total homogeneity in the way both organizations studied behave in the face of changes, hospital practices are partially institutionalized.
Síntese e formação de nanoestruturas e filmes de alumina anódica porosa
(Universidade Federal de São Carlos, 2014-01-30)
Franci, Patrícia Monteiro
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Trivinho-Strixino, Francisco
This paper presents a methodology for obtaining the porous anodic alumina. anodization of aluminum in acidic electrolytes may specifically result in different types of oxide films as a barrier type porous type. Anodic alumina is formed with a regular porous structure on the nanometer scale when using the technique of two-step anodizing in galvanostatic mode, where the applied current density is fixed and observing the variation of potential along the way. In this study, we used a factorial design to investigate the effects of variables on morphology and electrochemical responses, the planning matrix allowed mapping the proposed system, and the influence of the variables chosen in three different responses from electrochemical anodization curves. For this study three experimental parameters were chosen, as follows: temperature, electrolyte concentration and current density, all varying in two levels. The electrochemical response parameters chosen were: slope of the curve, the maximum potential and steady potential. These electrochemical responses provide information about the mechanism and kinetics of growth of oxide films, being important in the verification of some properties of the final preparation. As a result , and based on Pareto charts , it can be seen that the current density is the parameter most affected by the slope of the curve is related to the rate of growth of the oxide barrier formed initially. On the other hand , the maximum potential, early processes related to the source and opening pore was observed that the three variables influencing this response. Finally, the stationary potential important parameter related to the dissolution rate and the formation of porous oxide in dynamic equilibrium noted that all three variables were significant in the process. This study enabled to view the influence of independent variables and their cross- tillage on the growth of anodic alumina film .Os PLA films were characterized morphologically interactions to verify the homogeneity of the structures and relationships of the variables in the pore radius of AAP .
Aprendizagem de funções por meio da modelagem matemática: um estudo do comportamento de um composto químico
(Universidade Federal de São Carlos, 2014-01-30)
Fontes, Felipe Augusto Martinazzo
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Peixoto, Magda da Silva
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https://lattes.cnpq.br/0413910306376054
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https://lattes.cnpq.br/6400401456137063
The aim of this work is to propose the mathematical modeling use in the problems resolution, specially the study of the process of the chemical compounds in some drugs in the human body. Our study intends to answer questions as How long the drugs could be in our body? For answering these questions we proposed and made an activity with high school students from a private school.
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros
(Universidade Federal de São Carlos, 2014-01-30)
Hamester, Letícia Sausen
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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/0005558843039794
This work shows the development, construction, validation and application of an in-line colorimeter used for real time color quantification of the melted flow during polymer processing in the extruder. The device uses a set of four colored LED’s, red (R), green (G), blue (B) and white (W), that intermittently and sequentially illuminate the melt flow with its intensity transmitted through the flow and quantified by a single photocell. At first the device was validated in bench using aqueous colored solutions and later in the extruder during processing, using known concentrations of the acid dye diluted in polymer. The device was able to quantify with precision and in real time the attenuation of the different wavelengths emitted by each LED, caused by the presence of chromophore groups in the melted flow. It was successful to use to monitor in real time the degradation of polypropylene submitted to multiple extrusions. Degradation was proven through off-line analyses of multiprocessed polypropylene via rheometry and spectroscopy absorption on UV-visible. It was also used to quantify color in the melted mixture of polypropylene/montmorillonite (PP/MMT) to obtain nanocomposites. Using hue and luminosity parameters of the color it was possible to follow oxidation of iron ions present as impurity in the clay structure, determining which clays were better suited to these nanocomposite production.
Conceituação, avaliação e promoção de automonitoria em pré-escolares e sua relação com competência social e comportamentos-problema
(Universidade Federal de São Carlos, 2014-01-30)
Dias, Talita Pereira
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Del Prette, Zilda Aparecida Pereira
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https://lattes.cnpq.br/8113238388739093
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https://lattes.cnpq.br/0097014291170034
Currently, there is strong evidence that the promotion of social skills and social competence is crucial to quality of socio-emotional development and prevention of behavior problem from early childhood. The literature shows that both social skills and social competence depend, ultimately, on self-monitoring. However, there is a set of conceptual and methodological challenges associated with the analysis and promotion of self-monitoring, especially with young children. In the present study, it is proposed to; (1) define operationally the term self-monitoring, (2) analyze its relationship with social skills and behavior problem, and (3) develop a self-monitoring resource to evaluate and analyze the effects of an intervention that combined specific procedures to promote it. This thesis is composed of four chapters. In chapter I, a behavioral definition of indicators of self-monitoring is proposed based on literature review, considering the fields of Social Skills and of Behavior Analysis. In Chapter II, the stages of construction of Illustrative Resource of Self-monitoring (RIAM) for assessment (RIAM-A) and for intervention (RIAM - I) in preschoolers are described. In Chapter III, a study is presented with the objective of verifying similarities and differences in behavioral indicators of self-monitoring evaluated by RIAM-A (self-description, description and choice of consequence) of 53 children, between five and six years old, divided into three groups (socially competent, with deficits in social skills, and internalizing behavior problem and externalizing or mixed behavior problem). The results indicated that children with social skills were better than children with behavior problem in selfmonitoring tasks, further verifying positive correlation between self-monitoring scores and social skills scores, and a negative correlation between self-monitoring scores and internalizing behavior problem. Finally, Chapter IV examined the effects of an intervention involving contingency analysis training and exposure to social contingencies in structured situations to promote self-monitoring and its impact on social skills, social competence and reducing behavior problems in preschool evaluated by RIAM-A and who presented difficulties in self-monitoring tasks. Individual sessions were carried out, which included: presentation of interactive situations in the form of drawing, discussion about the appropriateness or relevance of each response and probable consequences, followed by participation in structured presentation of the demand for social skills discussed previously. The results showed that, relative to a comparison group, children who took part in intervention had improved social skills, self-monitoring and social competence, but not reduction of behavior problem. The set of studies suggests the feasibility of research on self-monitoring in early childhood, proposing indicators, resources and procedures for assessment and intervention strategies for self-monitoring. The implications of the research are discussed in terms of theoretical, methodological, empirical and practical contributions.
O princípio do máximo de Omori-Yau e generalizações
(Universidade Federal de São Carlos, 2014-01-31)
Franco, Felipe de Aguilar
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Hartmann Junior, Luiz Roberto
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https://lattes.cnpq.br/4217613854338579
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https://lattes.cnpq.br/2436923857295298
In this work we seek to establish a first contact with Geometric Analysis, aiming the understanding of the Good Shadow Principle of Fontenele and Xavier ([FX11]), which is a generalization of the Omori-Yau Principle. We will expose the basic results that are needed for their comprehension, and extend the study to other topics of Geometric Analysis, as the heat kernel, the existence of exhaustion functions and estimates to the gradient of harmonic functions and subsolutions of the heat equation. Once understood the Good Shadow Principle, we intend to extend it by proving that the class of the second order uniformly bumpable manifolds, introduced by Azagra and Fry in [AF10], also satisfies this principle.
Um estudo das potencialidades pedagógicas de atividades exploratórias-investigativas com o material didático geoespaço
(Universidade Federal de São Carlos, 2014-01-31)
Kusuki, Luiz Rodolfo
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Oliveira, Paulo César
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https://lattes.cnpq.br/7516513469811353
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https://lattes.cnpq.br/0057036699170852
This research has as its context the exploration potential of manipulative materials in mathematics teaching Geoespaço. In order to increase knowledge of the development and implementation of exploratory-investigative tasks and tasks of figural representation involving manipulative materials Geoespaço and having specific objectives the development and use of Geoespaço in different didactic sequences. The theoretical foundation takes the qualitative and quantitative analysis Proceedings of the National Meetings of Mathematics Education (ENEMs) from 2001 to 2010 and the Proceedings of the National Association of Postgraduate Education and Research (Anped) from 2000 to 2013, more specifically, on the use of manipulative materials from of Lorenzato (2006) and Bezerra (1962), on the theory of figural representations of Fischbein (1993) and on the exploratory-investigative tasks Bridge (2009). The relevance of this research is partly because of making clear the importance of making use of manipulative materials in exploratory-investigative tasks in various methodologies of teaching math.
Avaliação do Projeto de Desenvolvimento do Ecoturismo na Mata Atlântica em parques do estado de São Paulo
(Universidade Federal de São Carlos, 2014-01-31)
Kaneshiro, Daniela Midori
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Neiman, Zysman
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https://lattes.cnpq.br/6435341856481082
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https://lattes.cnpq.br/8184873605786412
The Atlantic Rainforest, which has the title of World Heritage by UNESCO, is a very important area that must be preserved for its rich biodiversity, in addition to the natural and cultural assets that attract tourists. For all these reasons has considerable tourism potential and can contribute to the region's economy. The Design of Development of Ecotourism in the Atlantic Forest region was created to implement actions that benefit the communities surrounding protected areas, as well as broaden the infrastructure for the visitation in order to establish an orderly tourism management to avoid negative impacts on the region. This study aimed to evaluate this project from its conception to the end of their actions in 2012, especially its indicators, applying the methodology PDCA (Plan, Do, Check and Act). In its seven years of implementation and with the constant changes in park management and technical project, it is important to make a study and review of the activities and present the work done. Of 9 indicators, 4 achieved the target and the rest are close to reaching. The increase in the amount of published normative instruments and value in the income earned on the rise present a breakthrough for the Protected Areas. For the Bank, the results were positive; they were paid 98.15% of the total contract value. Moreover, due to the dollar variation, investments were canceled. For managers of parks, the balance was also positive for the gain with environmental education and improvement tools in the infrastructure to receive visitors. The activities carried out in the Project caused the state to be in inducing paradigm change in relation to the parks because: plus space for research, public visitation shall receive investments in order to increase the number of visitors but also improved quality receptive, which causes change in participation around. This change is characterized by a qualified participation of traditional communities, local businesses and the municipal government.
A palavra como "aparelho motor": um estudo da linguagem em matéria e memória
(Universidade Federal de São Carlos, 2014-01-31)
Temporal, Vanessa de Oliveira
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Pinto, Débora Cristina Morato
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https://lattes.cnpq.br/1311151012002541
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https://lattes.cnpq.br/6727749472080043
After a short resumption of Bergson s thesis about the inadequacy of language s expression of reality, which permeates all his works, this dissertation intends to discuss how Matter and Memory contemplates a deeper reflection on this subject as it presents the notion of motor mechanism , allowing to foresee the bodily grounds of practical habits and pointing out the problem of their transposition to speculative thought without criticism. In general, we intend to comprehend how Bergson s language conception based on a definition of word as an entity of motor order or more specifically as motor mechanism announces an extralinguistic access to reality when it directs the philosophical study to the notion of image and to the five figures which permeates the last chapters of Matter and Memory.
Influência de variáveis de sinterização na microestrutura e propriedades mecânicas de peças de PTFE moldadas por prensagem isostática
(Universidade Federal de São Carlos, 2014-02-03)
Strabelli, Patrícia Giunchetti
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Canto, Leonardo Bresciani
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https://lattes.cnpq.br/7287108960864123
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https://lattes.cnpq.br/1484520971056165
Polytetrafluorethylene (PTFE) is used in a wide range of critical applications because of its outstanding chemical and thermal resistance, low surface energy and special tribological properties. Because of its ultra high molecular weight, which leads to high melt viscosity, PTFE cannot be processed by traditional extrusion and injection methods. Cold pressing followed by sintering above its melt temperature is the main processing technique. The sintering time is defined according to the dimensions of the manufactured part and may last from a few hours to several days for large parts. Studies of the influence of sintering time and temperature on PTFE crystalline microstructure and mechanical properties are scarce in the scientific literature, being the main objective of this study. PTFE plaques were isostatically pressed and sintered at temperatures from 360XC and 390XC for times between 10 e 10:000min. Differential Scanning Calorimetry (DSC), measurements of mass loss and density, Scanning Electron Microscopy (SEM), compression and tensile tests were performed. The results of mass loss demonstrated that degradation is more pronounced in the surfaces of the PTFE parts and increases with sintering time and temperature. Analysis of the enthalpies of fusion and density measurements indicated indirectly the reduction in the molecular weight and increase in the crystallinity degree with increasing sintering temperature and time. The SEM analysis allowed the direct observation of crystalline microstructure, indicating a trend of increasing of the width the crystalline lamellae with sintering time and temperature. Tension and compression tests have shown that even under a wide range of sintering conditions, for which the polymer molar mass, crystallinity degree and structure are modified, PTFE mechanical properties are not significantly affected. The results obtained will guarantee PTFE parts processors and users to rely on polymer performance, even for parts exposed to extreme sintering conditions, current found in the industry.
Mapeamento e análise do perfil científico-tecnológico de organizações atuantes no desenvolvimento de instrumentação aplicada ao agronegócio
(Universidade Federal de São Carlos, 2014-02-03)
Bessi, Nayara Cristini
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Faria, Leandro Innocentini Lopes de
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https://lattes.cnpq.br/4926716777749536
In order to assist the institutions of science and technology to obtain actionable information for use in strategic processes and innovation, this research proposes a systematic, based on the practices of Competitive Intelligence to verify in an area of knowledge, which are organizations that can help in their research and development by mapping them and analyzing their scientific and technological profiles. The difference of this research is in this systematic emphasis on the recovery process of technological information. This process should be more rigorous, or even better investigated because, when not applied correctly can result in a skew analysis, compromising the information production. To develop a systematic methodology adopted was the case study, choosing Embrapa Instrumentation for the application. This institution was chosen because is a unit of EMBRAPA (Brazilian Agricultural Research Corporation, which actively participates in innovative practices in agribusiness and intelligence. The systematic was developed in the area of instrumentation applied to agribusiness comprising four main processes: a) identification of needs and categorization of activities; b) planning; c) mapping the organization and retrieval of information; d) analysis of the scientific- technological profile and classification organizations. The results were: a) a systematic of mapping and analysis of scientific - technological profile; b) the main organizations with potential contribution in research and development activities of the institution of study; c) the scientific - technological profile of each organization; d) the positioning of these in the agro-industrial system e) the key organizations, specifically, that acted more broadly in the categories of research and development of institution of science and technology. It is evident from the results that the objective was achieved contributing to the bottleneck that exists in the literature about recovery of technological information and providing actionable information to the institution of science and technology to understand your context of operation. Universities Nanjing University, Zhejiang University, Beijing University of Technology and the Company Sinopec were identified as key to the institution of study organizations. The development and implementation of systematic contributed in so far as possible the replication of this research in other areas, at other times, to other institutions of science and technology, and foster studies of other authors in order to promote improvements in the systematic, particularly in the process of technological information retrieval.
O papel da escola normal secundária de São Carlos na constituição de um poder local de elite (1911-1923)
(Universidade Federal de São Carlos, 2014-02-03)
Jambersi, Belissa do Pinho
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Riscal, Sandra Aparecida
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https://lattes.cnpq.br/3818427329401721
The research, based on the Sociology of Education, had, by goal, to understand the role played by the old Secondary Normal School of the city of São Carlos, in the constitution of a local leverage of intellectual elites characterized by a socially valued in the city lifestyle, during the period from 1911 to 1923. The research, through primary sources, rebuilt the relationships established between the school and the city, pointing out the symbolic elements of leverage / knowledge that determined the formation of the old Normal School, as a field of leverage propagated by cultural differences, disseminated within the daily relationships established in the city. As a category of analysis, was used the concepts of field, symbolic leverage, cultural capital, elite education and habitus from Education Sociology of Pierre Bourdieu, and also the concept of elite, according to authors like José Murilo de Carvalho.
Modelo do projetista e modelo do usuário no design de produtos: um estudo da atividade de lavar roupas
(Universidade Federal de São Carlos, 2014-02-03)
Medeiros, Marcella Hellen Rezende de
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Menegon, Nilton Luiz
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https://lattes.cnpq.br/5461487552981919
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https://lattes.cnpq.br/7296068570556260
In the product development process, user-related issues have achieved increasingly more relevance as they are progressively being perceived as strategies for innovation and competitiveness. In defining product specifications, designers strive to meet user needs. However, in real-use situations, a number of variability factors will result in gaps between what was anticipated by designers and actual user activity (DANIELLOU, 2002). This research was deployed during a laundry machine development process. The aim was to understand the existing gap between the designer model and the user model with regard to laundry activity, as well as user strategies to circumvent these gaps. Starting from the assumptions in Situated Ergonomics, we applied the activity analysis method. The results presented multi-determinants of the design process, such as: market needs; user knowledge; deadlines; financial resources; and project team member expertise. These determinants influenced the drafting of usage requirements, which, in real-use situations, reflected some gaps between designer and user models. Field research uncovered user strategies, such as: resorting to other information sources; creating new ways of use in line with user habits or interaction conditioned by their environment; and ignoring product functions they did not understand. This study's contributions relate to the importance of activity analysis in the design process and the role of the ergonomist in product design.
Extratos vegetais de cana crua e a atenuação da toxidez por alumínio no crescimento inicial de cana-de-açúcar
(Universidade Federal de São Carlos, 2014-02-04)
Malvestiti, Jacqueline Aparecida
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Casagrande, José Carlos
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https://lattes.cnpq.br/7227235855217660
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https://lattes.cnpq.br/4554213632240773
About 70% of the area cultivated with sugarcane in Brazil are on acid soils, characterized by having severe limitations in terms of fertility. Organic acids from residues decomposition of sugarcane, due to mechanized harvest without the use of fire, are able to interact with elements of the soil solution. This research project was aimed at investigating the influence of the addition of plant extracts residue of sugarcane in the complexation of Al phytotoxic and expansion of the root system of the crop . The experiment was conducted in laboratory and greenhouse, with the following specific objectives: (a) characterize chemically and determine qualitatively and quantitatively the organic acids present in plant extracts of the residue of sugarcane harvested mechanically to select the plant extract with greater neutralizing capacity of Al; (b) test doses of plant extracts of of sugarcane for complexation of toxic Al; (c) determine the depth of root development of varieties of sugarcane under conditions of high Al saturation; (d) verify that the plant extracts applied on columns filled with soil naturally acid, cultivated with sugar cane were able to promote the elevation of the pH of soil. The results of laboratory analyzes of plant extracts showed greater power to carry exchangeable cations along the soil profile and neutralizing Al phytotoxic to the plant extract of the residue variety RB867515. The results of the experiment at home a greenhouse indicated that the varieties of sugarcane differed in Al tolerance of the soil, on the accumulation of biomass and aluminum aerial part and root system, as well as deepening the roots. The plant extract residue of variety RB867515 had a positive effect on root development of varieties, in raise soil pH, alleviating Al toxicity and the availability of basic cations to the sublayers of the soil columns. The dosage of the plant extract, which promoted effective improvement in soil properties, was the equivalent of 21 tha- 1. The varieties were classified as tolerance to Al, as follows : RB966928 > RB855453 > RB867515.
Análise da expressão gênica das peroxirredoxinas em pacientes com deficiência de glicose-6-fosfato desidrogenase e doença falciforme por hemoglobina SC
(Universidade Federal de São Carlos, 2014-02-04)
Lopes, Karina Kirschner
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Cunha, Anderson Ferreira da
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https://lattes.cnpq.br/0329741640375661
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https://lattes.cnpq.br/8220418054285768
Reactive oxygen species (ROS) are produced by the organism under various circumstances, such as the incomplete reduction of oxygen during cell respiration and also by exogenous factors. Have certain roles in the body, however, when in excess are harmful causing lipid peroxidation, DNA damage, cell organelles and even death. So, cells have developed antioxidant systems to maintained ROS at an appropriate level. Participating in this system the antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase and peroxiredoxins (PRDX). The latter stands out for its great abundance and reactivity with substrates, in humans six PRDX were described and are located in different cellular compartments, developing important roles in cell signaling and protecting cells from oxidative damage. In erythrocytes, this protein is so abundant that only lost in concentration for the globins, indicating a probable key role in this cell type as the erythrocytes are true targets of damage caused by ROS. However, little attention has been given to the antioxidant role of peroxiredoxins in erythrocytes and there are few studies in the literature relating to some of these proteins with erythrocyte various diseases, especially in relation to haemolytic anemia, which are part dehydrogenase deficiency Glucose-6-phosphate (G6PD) deficiency whose production of NADPH appears to interfere with the catalytic cycle of peroxiredoxins, however the relationship of these proteins in G6PD deficiency and SC hemoglobinopathy has not been explored. Literature data show that the erythrocytes in patients with sickle cell disease are under constant stress, in the case of individuals with SC hemoglobinopathy seems to be a greater rate of autoxidation of hemoglobin due to instability of the hemoglobin in this disease, leading to increased ROS. Then, this study evaluated the role of PRDXs in reticulocyte of patients with diseases described above, compared with reticulocytes of healthy individuals, using real-time PCR and Western blot. The results showed that no significantly statistical difference between the gene expression of PRDX in control and in patients in the two diseases studied. As for protein expression apparently there was also no significant difference. However, when assessing the redox profile at the major PRDX found in erythrocytes, PRDX 2, along with PRDX 1, we found that these patients were more oxidized state in patients than in controls. This suggests that there is a deficiency in the recycling of these proteins due to low activity of thioredoxin reductase, also due to increased ROS in these patients. And as patients do not present a severe hemolytic anemia there may be an increased expression and/or activity of other antioxidant proteins such as glutathione peroxidase and catalase.
Água de reúso em rabanete (Raphanus sativus L.): implicações agronômicas e sanitárias
(Universidade Federal de São Carlos, 2014-02-06)
Mendes, Paulo Eduardo Ferreira
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Souza, Claudinei Fonseca
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https://lattes.cnpq.br/4858219292242433
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https://lattes.cnpq.br/1208341707443422
Due to increasingly irrigation water source scarcity, treated wastewater (TWW) is becoming a more attractive by nutrients source, showing sanitary and agronomics feasibility. In this way, this research evaluated, in a greenhouse conditions influence of superficial drip irrigation on radish (Raphanus sativus L.) cv. Crimson Giant production and nutritional status, as well as, soil chemical attributes changes; and, soil and radish sanitary contamination risk submitted to two water sources. The experiment was carried out at CCA/UFSCar, Araras, SP and a completely randomized design was adopted, with two treatments [AB- potable water (PW) and AR- treated wastewater (TWW)]. Soil and radish sample were submitted to sanitary analyses. The results showed that drip TWW didn t commit radish nutritional, production and increased macronutrients availability. However, soil sodium adsortion ratio (SAR) and exchangeable sodium percentage (ESP) increased by TWW application, but without salinization and sodification risk. Furthermore, radish showed out of sanitary conditions, indicated by the E. coli and total coliformis contamination, impossible its commercialization and in natura consumption. Considering the obtained results, suggest take appropriate action to improve the TWW treatment efficiency and promote radish sanitary conditions. The obtained results demonstrated the wastewater reuse feasibility as a source of nutrients to radish, substituting or reducing the application of commercial fertilizers and reducing the cost production.
Uma análise da perspectiva investigativa em material didático de ciências: coerência com a proposta pedagógica?
(Universidade Federal de São Carlos, 2014-02-06)
Oliveira, Andréia Aparecida Arruda de
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Julio, Josimeire Meneses
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https://lattes.cnpq.br/8805879632103815
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https://lattes.cnpq.br/4090226355558077
In the present research, we analized the pedagogical proposal from the learning system of SESI/SP, implanted in the educational web of the city of Araraquara, inland São Paulo. The four books to teach Science recommended by this proposal, used in the 6th to the 9th years (children aged 11 to 14, secondary school) were also analyzed both analyses were made by an investigative perspective. We searched to verify the consonance and coherence between the fundaments of the Proposal and what is executed in the books in terms of this proposal. The methodology used to orient this research was the analysis of the content. First, we investigated the fundaments of the Proposal in three dimensions: how the school curriculum is organized, what the teaching concept for Sciences is and how the investigative perspective works these topics made us capable to analyze the consonance between the Proposal and the activities of the books. Later, we characterized and quantified every each activity according to the categories of analysis created under the base of the aspects present in an investigative teaching approach. The created categories were: proposal of problems, formulation of hypotheses, observation of phenomena and objects, collecting data, interpreting data, elaboration of conclusions, systematization and socialization of the results. We also investigated the degree of openness provided by the book to the students, according to the previous categories. The data was organized through charts and the confection of evaluative cards, and when it was interpreted by these tools, it has allowed us to know better about the Science teaching approach transmitted in this material. The results indicate consonance between the Proposal and the material, although some considerations must be made about it.
Formulação de política de indexação para coordenadorias de comunicação social em ambientes universitários: indicadores de diretrizes para análise e representação de assuntos
(Universidade Federal de São Carlos, 2014-02-07)
Kochani, Ardala Ponce
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Boccato, Vera Regina Casari
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https://lattes.cnpq.br/2400120561271067
The theme of this study is the indexing policy for Coordination of Social Communication (CCSs) in university environments, focusing on indexing clippings. This theme is based on interdisciplinary characterization existing between Science, Technology and Society (STS), Information Science (CI) and Communication Sciences (CC) fields in the context of the area of Knowledge Organization to combine, share and create mechanisms that society closer to the aspects of science and technology. Regarding Social Communication highlights the use of clippings, many organizations and this instrument is appropriating to select news in various media on subjects that interest them. Therefore, the purpose of this research is to investigate the organizational and communicational reality CCS/UFSCar, as a starting point for further studies in order lifting guidelines for establishing a policy of indexing for CCSs from context and Analysis Representation of Information. With this proposition, this research has the objective to contribute to the establishment of a policy index that optimizes the thematic treatment of clippings from the perspective of CCSs in university environments in the context of social cognitive indexer professional clippings and users who retrieve this product informational, from theoretical and methodological foundations provided by the area of Knowledge Organization. The qualitative method was used for theoretical and applied research with socio-cognitive approach, and gave up from the questionnaires and the application of Verbal Protocol Group. The methods used were: application of technical and organizational questionnaires and using the technique of Verbal Protocol Group, involving participants: directors/responsible CCSs ANDIFES linked to the brazilian federal universities; director and indexer CCS/UFSCar as well as users who clippings recover the system used by the unit. The results obtained from the questionnaires was the technical-organizational and socio-historical characterization of CCSs from brazilian federal universities and CCS/UFSCar. Mention some results obtained from the application of Verbal Protocol Group in the form: there is a concern with the procedures used to perform the indexing, there is not a satisfactory representation of the matters contained in the indexed clippings; participants suggest that the retrieved records arranged and are also available by publication type, the recognition by participants in relation to the function of preservation and institutional memory that performs clipping, and no need for a policy of indexing and his record in a manual indexing for CCS/UFSCar. The final consideration from the results obtained that depict the existing interdisciplinary STS, CI and CC fields enables collaboration scenario of theories, methodologies and practices for establishing a policy that involves the entire process of thematic information processing and, consequently, quality in both storage and retrieval of.