Navegando por Data de Publicação, começando com "2010-03-12"

Filtrar resultados por ano ou mês

Agora exibindo 1 - 12 de 12

Os gêneros do discurso e a prática da produção textual: dialogando sobre os conhecimentos necessários aos educadores dos anos iniciais do ensino fundamental
(Universidade Federal de São Carlos, 2010-03-12) Garcia, Stella de Lourdes; Reyes, Cláudia Raimundo; https://lattes.cnpq.br/1903278004759421
The aim of this research was to verify and analyze which skills are necessary to the educators of 9-year-old pupils at the discourse genres as a teaching subject so that they can guarantee the pupils learning regarding the textual production which covers beyond the genre marks, i.e. the elements which ensure the discourse dynamics. Such skills were approached during an Extension Course in a dialogic collaborative process between researchers and educators, which was grounded in the development of a didactic sequence for the teaching of the writing discourse genre. It is an investigation of qualitative nature based on the dialogic collaborative methodology. The data collection was carried out during a continuing education course attended by educators and pupils from a municipal public school in São Carlos-SP which integrates the Project Learning Communities: betting on the learning quality, differences equality and democratization of the school management . We adopted a language conception which is constitutive of the individuals and used the studies by Freire, Bakhtin and researchers such as Schneuwly and Dolz as guidance. The data analysis, which was orientated by the assessment of themes present in the meetings with the educators as well as in the meetings with a third-year group of pupils, led us to conclude that the knowledge basis about teaching, more specifically the one regarding the knowledge of specific contents which refer to the discourse genres of the educators was not enough to guarantee that the discourse genres were conceived as a teaching subject. Although they were present in the classroom in reading activities, such a fact did not guarantee that the pupils appropriated them and started to produce them textually. As for the knowledge built during the education course, we believe that the reflections provided by the dialogic collaborative dynamics might have contributed to a change in the practice of the educators in question. We highlight the importance of the definition of the genre to be apprehended by the pupils, as well as the need to contextualize the writing process in an interlocutive situation, i.e. the pupils need to know what, why, how and to whom they write. Therefore, we can claim that using the didactic sequence to a writing genre teaching worked as instrumental to both the educators and the pupils. As for the educators, it provided methodological guidance to the systematized teaching of a writing discourse genre, thus contributing to the construction of a teaching knowledge basis; as for the pupils, it provided them with writing assurance, since they could learn and experience the knowledge and procedures which the textual production practice entails, taking into account the characteristics of the genre and the interlocutive situation.
Tensão e extensão: ensaio sobre a ontologia bergsoniana
(Universidade Federal de São Carlos, 2010-03-12) Henriques, Fernando Meireles Monegalha; Marques, Silene Torres; https://lattes.cnpq.br/4822141288006918; https://lattes.cnpq.br/6598854428295430
In this work, our aim is to show how Bergson s consciousness analysis is linked to his ontology. For that, we will begin with an analysis of temporal dimensions that are implicit in the idea of duration. Then, we will approach the idea that Bergson thinks our consciousness as a temporal field within past, present and future are linked. From there, we will try to show that this temporal field acknowledges several levels, as he put forward by his degrees of duration s theory. Thereafter, we will be ready to display the internal link between temporality and ontology according to Bergson, insofar our consciousness will be, for the French philosopher, just one of varied levels composing real s internal structure, insomuch other degrees of duration can be thought being high or low from this average temporal degree that our subjectivity is. Low: minimal temporality of our own body and lowermost duration of the matter. High: the concretion of duration or eternity of life , which is going to be called God by Bergson. In all these cases, the point is to think in duration, that is, to think varied strata of real by their temporal features, defining their respective places in a sole temporal structure, that we can go through by our own being s immanent intuition, in a movemente which Bergson will assert to be the metaphysics itself . These varied degrees of duration, in turn, will reveal being in a reverse relation to the consciousness extension: the bigger the past contraction made by our consciousness, that is, the bigger its intensity, the lesser its extension in the world. We will attempt to show that this idea of a reverse relation between the duration degrees and extension ones permeates a large part of Bergson s work, and it is very helpful in order to make Bergson s work clearer. Finally, our aim is to show how Bergson thinks his ontology from a genetic point of view: for that, we will elucidate what the concept of vital impulse hides and we will understand what the singular procession presented by Bergson in the third chapter of Creative Evolution consists of.
A educação na trajetória intelectual de Arthur Ramos: higiene mental e criança problema (Rio de Janeiro 1934-1949)
(Universidade Federal de São Carlos, 2010-03-12) Garcia, Ronaldo Aurélio Gimenes; Ferreira Junior, Amarilio; https://lattes.cnpq.br/0748545841167046; https://lattes.cnpq.br/9007404555091852
In this research we look for to critically reconstitute the paper of the education in the intellectual trajectory of Arthur Ramos. This author carried through an intense work of research and developed practical actions throughout its professional and academic experience. Ramos elaborated a theory of psychoanalysis base and humanist who resulted in an important set of concepts, proposals and social intervention that surpassed the limits of the school to reach the family and the community as a whole, extending in such a way the proper concept of education. The intellectual mentioned one was collaborator of Anísio Teixeira in the reform of public education next to the Department of Education of the Federal District during the administration of mayor Pedro Ernesto Batista in the decade of 1930. As part of the reform of Anísio Teixeira the Service of Ortofrenia and Mental Hygiene commanded by Ramos was installed. The objective to receive the children who were considered as incapable to learn and who presented a misadjusted behavior directed from the public school. It enters the objectives of the present research we can detach: to present Arthur Ramos as an intellectual of its time, involved with the controversies of its time in the interior of the field and thinking about forms of overcoming of the educational and social quandaries of the nation under the prism of the humanism and the democracy; to analyze its pedagogical proposals and of intervention in the school by means of the mental hygiene; to referential the child concept problem and to analyze its workmanship of scientific spreading Spirit Health of the 1939. The reverential theoretician methodology had been used the patrimonialism concepts, of authoritarian modernization, of intellectual field and habitus. The developed research search to use of the analysis of the intellectual production and the practical politics of Arthur Ramos from some documentary sources as published workmanships, periodic and manual assays, scientific articles in of spreading. Everything indicates that the proposals of Arthur Ramos were beyond the historical possibilities of the decades of 1930 and 1940. The work of the alagoano doctor of undeniable pioneers in the field of the applied psychoanalysis and the anthropology to the education was not enough to hinder that its accomplishments were condemned to the intellectual ostracism the one that had been deliver during many decades. The rescue of the thought and the practical one of Ramos is a form to retake the memory intellectual of that historical period especially of the field of the knowledge of the history of the education.
Estudos de separação enantiosseletiva para uma série de sulfóxidos quirais em colunas poliméricas
(Universidade Federal de São Carlos, 2010-03-12) Lourenço, Tiago de Campos; Cass, Quezia Bezerra; https://lattes.cnpq.br/9197210255594409; https://lattes.cnpq.br/7899438213629513
The liquid chromatography enantiomeric separation of a series of seventeen chiral sulfoxides was systematically investigated using multimodal elution with the new synthetic polymeric stationary phases based on monomers N-(2- acryloylamino-(1R,2R)-cyclohexyl)-acrylamine (P-CAP®), N,N0-[(1R,2R)-1,2- diphenyl-1,2-ethanediyl]bis-2-propenamide (P-CAP-DP®) and trans-9,10-dihydro- 9,10-ethanoanthracene-(11S,12S)-11,12-dicarboxylic acid bis-4-vinylphenylamide (DEAVB). The sulfoxide series was composed of aryl alkyl sulfoxides, benzoimidazole sulfoxides and the drugs modafinil, albendazole sulfoxide, omeprazole, lansoprazole, pantoprazole and rabeprazole. This work examines the effectiveness of the polymeric chiral stationary phases for the separation of chiral sulfoxides and describes the superiority of DEABV for these separations in three different elution modes. The first ever reversed phase enantiomeric separations on these columns is demonstrated. Besides that, the use of non standard chromatography solvents was evaluated for the sulfoxides series on the polymeric stationary phases. The study of the development of polysaccharides chiral stationary phases (CSPs) immobilized on to aminopropilsilica was carried out using thermal or photochemical methods. The photochemical method was more effective and provided the production of a CSP based on amilose tris-3,5- dimethylphenylcarbamate (CSP 7). This column showed stability for non standards mobile phases; however, has showed low enantiorresolution power for the compounds investigated. Using the photochemical approach an amilose tris-3,5- dimetoxiphenylcarbamate (CSP 8) was also prepared. The immobilization conditions needs, however, futher investigations and these results will be also presented and discussed in this work.
Regressão de dados binários : distribuição Weibull
(Universidade Federal de São Carlos, 2010-03-12) Caron, Renault; Campos, Adriano Polpo de; https://lattes.cnpq.br/4867996651212204
In this work a new class of models for binary data based on Weibull distribution is introduced. A review is made of the most known linkage functions. This class of models has as special case the complementary log-log model and approximates well the logit and probit models. Three real data sets are given to compare the proposed model with many others. In one of these data sets the model is extended to allow multinomial data, that is, a discrete variable with more than two outcomes. The results are very good, because the estimation of parameters is quite simple and the model has shown to be very eficient.
Atividades para aprendizagem do conceito matemático de função
(Universidade Federal de São Carlos, 2010-03-12) Guimarães, Rita Santos; Paterlini, Roberto Ribeiro; https://lattes.cnpq.br/6240750958932738
The choice of the mathematical content of this work came from the identification of the difficulties of students in High School 1st year with the theme functions through the experiences of this researcher in her teaching practices. In order to facilitate the teaching and learning of the mathematical concept of function, some proposed activities mixed scripts and problems, to use the concept of spontaneous relationship as the basis for the construction of the scientific concept of function. The activities also have the language necessary for basic scientific understanding of the concept that we use to situations of perceived patterns for students to build functions represented by formulas. We explored the transition from discrete to continuous and covered some graphical situations for functions. The activities were settled in small groups of students from two schools in the first year of High School, one public and thr other on a cooperative style. Applications took a week in each school. All data collected were analyzed and compared with the previous observations, following Didactic Engineering as research methodology. So we could reformulate some parts of the sheets of activities to obtain more positive results of its application. We found that these dynamics in general stimulated and encouraged the participation of students in their own learning process. As it was not possible to follow any longer the same class, this prevented us from obtaining more precise information on the effects of the activites. Anyway, we believe that the produced material produced can help other professionals, even if they have to suffer minor changes to be compatible with each situation.
Concretos refratários avançados com alto teor de carbono
(Universidade Federal de São Carlos, 2010-03-12) Luz, Ana Paula da; Pandolfelli, Victor Carlos; https://lattes.cnpq.br/7369376873984839; https://lattes.cnpq.br/3470395641242374
Refractory castables in the Al2O3-SiO2-SiC-C system are applied in the iron making process, including runners for molten slags and metals. Over the past years, several attempts to increase the carbon content of these materials have been performed, aiming to attain good performance when in contact with slags and bath, due to the low wettability of the carbon particles. However, carbon is highly vulnerable to oxidation. Therefore some actions, such as the use of antioxidants, are necessary to keep this element in the refractory microstructure during service. In this work the main objective is the design and development of castable formulations in the system Al2O3-SiO2-SiC-C containing 7 and 10 wt% of a mixture of carbon sources (pitch, coke and carbon black). Besides that, the evolution of the refractories reactions, associated to the use of one of the following antioxidants (Si, B4C and sodium borosilicate glass) or their combination, was investigated by several experimental and practical (i.e. application of one composition on a tilting runner in a metallurgical company) tests and by the thermodynamic simulations developed in the FactSage® software. The wettability technique, using the sessile drop method, was also applied in the evaluation of the interactions between slags and the castables. It was verified that the combined use of three antioxidants resulted in lower oxidation and excellent thermo-mechanical properties for the designed castables. However, when one of the compositions were applied in a tilting runner equipment, a superior mass loss was observed due to the refractory peeling. The excessive sintering of some parts of the castable (and the chemical corrosion at the contact with molten metal/slag led to the wearing of this material. Additionally, thermodynamic calculations pointed out that the Al4O4C, Al2OC, TiO2, and other antioxidants are good options for the refractory system investigated in this work.
Otimização das propriedades superficiais dos aços inoxidáveis AISI 304, AISI 316L e ASTM F138 recobertos com filme de alumínio e nitretados
(Universidade Federal de São Carlos, 2010-03-12) Kapp, Mario Sergio Vinicius; Souza, Sylvio Dionysio de; https://lattes.cnpq.br/9114778666084317
Many industrial applications of stainless steel require the modification of surface properties, such as corrosion resistance, and mechanical properties such as hardness. For this purpose several surface modify techniques have been used and researched. In this work, samples of three different stainless steels, AISI 316L, ASTM F138 and AISI 304 were coated with aluminum thin film with different thickness and plasma nitrided. The characterization of AISI 316L samples was performed by X-ray diffraction analysis, micro Vickers hardness measurements and by scanning electron microscopy (SEM). For samples of ASTM F138 and AISI 304, besides techniques further, were also performed Mössbauer spectroscopy analysis and corrosion tests (NaCl). The results for samples of AISI 316L indicated that is possible to form the AlN phase on the surface of samples with Al film and the nitriding parameters (temperature, time and pressure) has a fundamental role in the thickness and composition of the layer formed and the film adherence. Moreover, we observed that the thickness of the film influenced the formation of Fe2Al5 and AlN (Hex.) phases. The results of ASTM F138 samples indicated that the composition of the matrix seems to play an important role in the formation of the CrN film as well as the adhesion to the substrate seems to be important to increasing the corrosion resistance. As amostras de AISI 304 apresentaram resultados satisfatórios para o aumento da dureza superficial, cerca de 10 vezes a dureza da matriz, bem como para a resistência à corrosão, que para algumas regiões analisadas superou a resistência à corrosão da matriz. The AISI 304 samples showed satisfactory results for surface hardness, increasing about 10 times the hardness of the matrix, as well as corrosion resistance, that in some analized regions it was greater than the matrix. The procedures used in this work allowed us to select an efficient treatment method for increasing surface hardness of stainless steel, without losing its characteristics of corrosion resistance.
Efeitos da ovariectomia e treinamento resistido na atividade da metaloproteinase-2 no tendão calcâneo de ratas
(Universidade Federal de São Carlos, 2010-03-12) Pereira, Guilherme Borges; Perez, Sergio Eduardo de Andrade; https://lattes.cnpq.br/9408953831211309; https://lattes.cnpq.br/0159911069166581
Tendons remodeling relies upon extracellular matrix restructuring by the matrix metalloproteinases (MMPs). The aim of this study was to investigate MMP-2 activity in different regions of the calcanear tendon after resistance training in ovariectomized rats. Wistar adult female rats were grouped into: sedentary (Sed-Intact); ovariectomized sedentary (Sed-Ovx); acute exercise (AcuteEx-Intact); ovariectomized acute exercise (AcuteEx-Ovx); resistance trained (ChronicEx-Intact) and ovariectomized resistance trained (ChronicEx-Ovx) (n= 10 each group). The resistance training protocol required the animals to climb a 1.1-m vertical ladder with weights attached to their tail was used. The sessions were performed once every 3 days with 4-9 climbs and 8-12 dynamic movements per scaling. The acute groups performed one session, and the chronic groups underwent a 12-week of resistance training. There was an increase in total MMP-2 activity in Sed- Ovx, AcuteEx-intact and ChronicExintact compared with Sed-Intact in the proximal region of calcanear tendon. AcuteEx-Ovx exhibited higher total MMP-2 than Sed-Ovx and AcuteEx-Intact in the distal region of calcanear tendon. Chronic-Ovx presented lower total MMP-2 activity than Sed-Ovx and Chronic-Intact in the distal region of tendon. The active MMP-2 was higher for the AcuteEx- Ovx than Sed-Ovx and AcuteEx-Intact in proximal region of tendon. There was higher active MMP-2 in the distal region of tendon in the Acute-Ovx than Sed-Ovx and AcuteEx-Intact. Ovariectomy and resistance exercise modulate MMP-2 activity according to specific tendon region, indicating a differentiated tissue remodeling.
Logaritmos no ensino médio: construindo uma aprendizagem significativa através de uma sequência didática
(Universidade Federal de São Carlos, 2010-03-12) Rossi, Patrícia Rodrigues da Silva; Paterlini, Roberto Ribeiro; https://lattes.cnpq.br/6240750958932738
The objective of this dissertation is to describe the work that we carry through in the elaboration of didactic material that became the teaching of logarithms more significant for the students of high school level. For this we constructed a didactic sequence using resources of mathematical education. To organize our research we use principles of Didactic Engineering. Our sequence also includes exposing lessons, activities with the use of the computer and the calculator. This didactic sequence includes Worksheets elaborated with the concern to make the student had the maximum autonomy as possible to decide them. As well as these activities, exposing lessons, activities with the use of computer and calculator are also part of our sequence. The sequence was applied to 42 students of two classrooms of first grade of high school level, in a cooperative school of the city of Araraquara - SP. For that, 15 lessons of 50 minutes each were used. Most of the activities was developed in pairs. The results were gotten through the analysis of the activities solved by the students and also through the comment and the notes that we made during the application of the sequence. According to these results we consider that our objectives were reached, because the activities were developed successfully and a posteriori analysis showed us that the applied sequence contributed for the learning of the students to occur of significant form.
As relações concretas com o outro em Entre quatro paredes
(Universidade Federal de São Carlos, 2010-03-12) Souza, Maria Inez de; Fonseca, Thelma Silveira da Mota Lessa da; https://lattes.cnpq.br/2798630687155711
Efeito da ovariectomia e treinamento de força no conteúdo lipídico no músculo esquelético, fígado, coração, depósitos de gordura e perfil lipídico
(Universidade Federal de São Carlos, 2010-03-12) Leite, Richard Diego; Perez, Sergio Eduardo de Andrade; https://lattes.cnpq.br/9408953831211309; https://lattes.cnpq.br/9102502940689012
The aim of the present study was to investigate the effects of resistance training on skeletal muscle lipid content, liver lipid content, heart lipid content, fat depots and lipid profile in ovariectomized rats. Wistar adult female rats were grouped into: sedentary (Sed-intact); ovariectomized sedentary (Sed-Ovx); strength trained (ChronicEx-intact) and ovariectomized strength trained (ChronicEx-Ovx) (n= 10 per group). A 12-week strength training period that consisted in climbing a 1.1-m vertical ladder with weights attached to rats tail was used. The sessions were performed once every 3 days with 4-9 climbs and 8-12 dynamic movements per climb. Ovariectomy increased liver lipid content, fat depots, heart and muscle lipid content. There was an increase in atherogenic index and negative change in lipid profile due to ovariectomy. Resistance training decreased lipid content in liver, soleus, tibialis anterior, fat depots (mesenteric and retroperitoneal) and lipid profile, independently of ovarian hormone status. These results indicate the potential benefits of resistance training as an alternative strategy to control the effects of ovariectomy on fat depot, lipid profile, and tissue lipid content.