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Analiticidade e suavidade micro-local para soluções de equações diferenciais parciais não lineares de primeira ordem
(Universidade Federal de São Carlos, 2012-04-02)
Medrado, Renan Dantas
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Hoepfner, Gustavo
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https://lattes.cnpq.br/7742503790793940
;
https://lattes.cnpq.br/9403703489935356
This work intends to study the analytic wave front set and theC8wave front set ofupx,0q, assu-ming that the partial differential equationsut fpx,t,u,uxqpresents a solutionu upx,tqPCk
Estudo da proteção de ácidos graxos de cadeia longa presentes em subproduto da agroindústria visando aplicação em nutrição animal
(Universidade Federal de São Carlos, 2012-04-02)
Fujieda, Roberto Joanne Yoshihiro
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Nogueira, Ana Rita de Araújo
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https://lattes.cnpq.br/7034773971317045
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https://lattes.cnpq.br/9445660687065512
Ruminant diets are characterized by low levels of lipids and these may be supplied by different sources, such as by-products of oil industries. The soapstock is the main by-product of the vegetable oils refining industry. To make use of this by-product in ruminant diets, aiming for a efficient result, the fatty acids must be protected. The protected fat is a source of unsaturated fat wich reacts with calcium to form a salt widely known as calcium soap. The present research evaluated the content and fatty acid composition by gas chromatography and also the concentration of the following analytes: Na, Ca, K, Mg, P, S, Fe, Zn, Mn, As, Cd, Co, Hg, Pb, Se and Cu (ICP OES), in four different origins of lees (A Soybeans soapstock, C Soybeans soapstock, B cotton sead soapstock and D flaxseed soapstock). The logistics was also considered for selection of the material, once it is extremely important in assessing the costs/benefits of the best lees source. To evaluate the process of fat protection it was applied the factorial design (24 e 22), and the final product was characterized by the same parameters of the raw. The lipid content for the four samples was approximately 51%. The fatty acid composition relative to oleic, linoleic and linolenic acids proved to be more favorable to the lees of A, C and D. The content of As, Cd, Co and Pb of the four samples of soapstock were below the LOD. Therefore, logistics was was determinant for the choice of A soapstock. Total fat content and fatty acids composition did not change significantly when compared with the raw material. It is possible to scale-up the process. The evaluation of costs for the fat protection process showed that about 93% more viable than the commercial protected fatty acids. It follows that the lees chosen presented high potential for the required use.
Proposta curricular do estado de São Paulo : novos papéis ou continuísmo na prática escolar do professor coordenador?
(Universidade Federal de São Carlos, 2012-04-02)
Paula, Adelgício Ribeiro de
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Tagliavini, João Virgílio
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https://lattes.cnpq.br/7228884211293276
This research has the objective to investigate new roles required of the Teacher Coordinator in the implementation of Curriculum Proposal of the State of São Paulo by the State Secretariat of Education. Our hypothesis is that there are factors in the dynamic that moves the school practice that act as mediators and are strong brands in the daily lives of those working within the school. Sought to verify in school practice of Teacher Coordinator as occur the appropriations of content and procedures required by the standards set by the central organs of the State Department of Education of São Paulo. With focal measures, the State of Sao Paulo seeks to invest resources in a timely manner to combat problems involving the school, however, without to invest in education and structural aspects of society. The Curriculum Proposal presents as purpose, the establishment of a homogeneous curriculum for all schools in its education network. The practice school held in each school is marked by institutional, by differences and the demands of the society around them. It appears that the historical movement of capital expansion prints the movement of society and determines the range of possibilities of the individual in their social action. These premises put to school and workers who operate in it certain prerogatives as the solution of structural and social problems whose origins are external to it. It is observed in the measures and pragmatic actions established under the rhetoric of rupture, old traces of continuity and conservation.
Do palco ao écran: eles não usam black-tie
(Universidade Federal de São Carlos, 2012-04-02)
Schmidt, Laila Rotter
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Monzani, Josette Maria Alves de Souza
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https://lattes.cnpq.br/0505156751073470
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https://lattes.cnpq.br/4206419885968877
This research aims to comprehend the creative process of the movie "Eles não usam black-tie" (They don't wear black-tie) (1981), directed by Leon Hirszman, based on the homonymic play written by Gianfrancesco Guarnieri, using theoretical references provided by the line research "Procedural Critics" (as proposed by Cecilia Salles) and the documents related to the creation of the film, such as Arguments, scripts, Storyboard, among others. Considering the passage from the play text to the film as a process of "intersemiotic translation" (following Roman Jakobson), or "transcreation" (as established by Haroldo de Campos), we propose an approximation to Hirszman's creative thought, artist witch, as Guarnieri, has marked the Brazilian political and cultural scenario for the past decades.
Análise discursiva de documentos oficiais sobre o sujeito surdo
(Universidade Federal de São Carlos, 2012-04-04)
Carvalho, Lílian Pereira de
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Baronas, Roberto Leiser
;
https://lattes.cnpq.br/4613001301744682
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https://lattes.cnpq.br/7492175179598682
According to the census that was made in Brazil in 2000, around 5.800.000 people have some degree of hearing loss or deafness. Among them, the numbers of deaf people who don t hear anything, classified as incapable of hearing and that use the sign language to communicate was 176.067 people. Our research aims to analyze the images discursively that the official documents compose about this important part of society that can not hear. To do this, we will consider the lexical choices made, through words or statements, when those document refer to the deaf. It was mobilized the notion of Imaginary Formation, which will be used to analyze the build images from the self image and the deaf people, subject of the discourse. We still propose to analyze these documents as genre of discourse, as it was such proposed by Mikail Bakhtin (1997), because we believe that if we ignore the peculiarities of the genre that we will be led to formalism and abstraction, to disregard the historicity of the study and the relation between language and life. From this notion, we will also discuss the scenographies permeating these documents, in order to understand the tone of the discourse. To compose the corpus, some laws or decrees were chosen dealing with several issues about deaf cause such as: the sign language, their accessibility to media, theaters, public institutions, education and health, among others. These documents produced by government departments have a normative nature that aims to regulate specific actions for these subjects, especially about the guarantee of their rights. From this perspective, we will take as theoretical and methodological focus the Discourse Analysis of French orientation and the Dialogical Analysis of Discourse, through Michel Pêcheux, Dominique Maingueneau and Mikail Bakhtin studies.
Produção recombinante, caracterização enzimática e estudos sobre a ocorrência de pectinases no "bicudo da cana-de-açúcar" (Sphenophorus levis, Curculionidae)
(Universidade Federal de São Carlos, 2012-04-04)
Evangelista, Danilo Elton
;
Silva, Flávio Henrique da
;
https://lattes.cnpq.br/1757309852446263
;
https://lattes.cnpq.br/6691516072529137
Plant cell wall confers to the cell plant, structural support as well as protection against pathogens and phytophagous. Among the cell wall polysaccharides includes pectic substances, which are composed of partially methyl-esterified galacturonic acid residues linked by α-1,4 glycosidic bonds. These enzymes are often synthesized by phytophatogenic micro-organisms for invasion of host plant or by own plant for modeling plant cell wall. The pectic substances are the major component of middle lamella and are natural degraded by pectinases action. Pectin methylesterase (PME) catalysis removes methyl-ester groups, and the Endo-polygalacturonase (Endo-PG) promoves the randomly hydrolysis reaction of α-1,4 bonds. One of the most importante agricultural pest species of the family Curculionidae (Coleoptera: Curculionidae) is Sphenophorus levis, the sugarcane weevil. The larvae of this insect penetrate into the rhizome and build galleries in the stem, decreasing productivity and causing the death of the plant. Large damages to the crop like that are significant in the costs of products derived from sugarcane. Considering the impact of this pest in the sugarcane crop and the absence of efficient method for control, new strategies for controlling are still necessary. The analysis of the cDNA library of S. levis larvaes shows the presence of one PME and one Endo-PG genes that we called Sl-PME and Sl-EndoPG respectively. Considering the importance of studies of insect pests and the extensively use of theses pectinases in different industry fields, we performed the characterization of genomic sequences coding for S. levis pectinases (Sl-Pectinases). It was also carried out the production and characterization of a Sl-PME and a Sl-EndoPG recombinant, expressed in heterologous system. We also accomplished analysis of gene expression by qRTPCR in different stages of development as well as different tissues, and phylogenetic studies between Sl-Pectinases and other pectinases from different kingdoms. The Sl- Pectinases sequences identified, show more similar to homologous insect genes deposited in the GenBank, especially with Sitophilus oryzae. The phylogenetic analysis indicates that the insect group is more correlated with bacteria group and fungi group respectively to PMEs and EndoPGs sequences. Pectinases genomic sequences revealed two introns for Sl-EndoPG gene with 53 and 166 bp, but no one for Sl-PME gene. Both of Sl-Pectinases Recombinant showed catalytic activity. The recombinant Sl-EndoPG shows optimal activity at pH 5,06 ± 0,27 and 49,74 ± 2,49 oC, but extremely low thermostability. For the polygalacturonic acid no-methylated as substract, the enzyme revealed Km = 3,88 mg.mL-1, Vmax = 21.96 μM.s-1 e Kcat = 3.137 s-1; for the citrus pectin partially methylated as substract, the enzyme presented Km = 4,98 mg.mL-1, Vmax = 17,19 μM.s-1 e Kcat = 2.456 s-1. Results in expression analysis suggest that S. levis pectinases have a digestive enzymes role, actting on the midgut. The present work represents the first pectinases of insect produced in Pichia pastoris heterologous system and characterized as optimal conditions of activity, thermostability and kinetic parameters.
O Programa "Minha Casa, Minha Vida" na política habitacional brasileira: continuidades, inovações e retrocessos
(Universidade Federal de São Carlos, 2012-04-04)
Romagnoli, Alexandre José
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Vargas, Marcelo Coutinho
;
https://lattes.cnpq.br/3816397515831545
This research aims to analyze the National Housing Policy of the Lula government throught the program Minha Casa, Minha Vida (PMCMV). The analizes concentrates on the continuities, innovations or any setbacks presents in PMCMV in comparison to Housing Policy historically built in Brazil. We assume that the housing issue is taken up in the country with the beginning of the Lula government, which shall enable a process of change in the area, such as the creation of a new Ministry (Ministry of Cities), changes in regulations sector, and programs with larger goals to those already found in the country. Implemented in this context that the PMCMV, although placed initially as a tool "anti-cyclical" government facing the international economic crisis, also stands outfor its social proposal. With the goal of building 1 million houses, being part of those destined for low-income population (historically one of the main bottlenecks Housing Policy) and considerable investment of resources of their own Federal Budget, the program becomes relevant and representative for the policy housing as a whole. From the neoinstitutionalist literature and public policy, this dissertation shows, in general, the PMCMV innovates with respect to funding issues and exploitation of the resources. The main result is the break with some logical housing production in the country, as the financing of housing policy from resources requiring immediate return, seeing a new trend in this direction. However, timidly intervenes in matters already well discussed in the country, such as urban planning and land tenure.
Equação da onda com dissipação não efetiva dependente do tempo
(Universidade Federal de São Carlos, 2012-04-05)
Nascimento, Wanderley Nunes do
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Kapp, Rafael Augusto dos Santos
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https://lattes.cnpq.br/2872257628868649
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https://lattes.cnpq.br/6150263588608389
The objective of this dissertation is to construct structural representations of the solutions to Cauchy problems for weakly dissipative wave equations below scaling and to deduce Strichartz type estimate Lp − Lq, q ≥ 2, for the solutions and its energy. Furthermore, we show that there is a asymptotic equivalence between the solutions for free waves equation and the solutions for the weakly dissipative wave equation.
Resposta fisiologica de Chlorella vulgaris sob concentrações variáveis de cádmio, fósforo e nitrogênio
(Universidade Federal de São Carlos, 2012-04-09)
Chia, Mathias Ahii
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Lombardi, Ana Teresa
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https://lattes.cnpq.br/6737850858443813
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https://lattes.cnpq.br/7713651406566544
Microalgae are capable of adapting themselves to changes in environmental conditions through the production of different biomolecules. This study investigated the effects of the metal, cadmium on the ecophysiological response of microalgae under varying nutrient conditions. In the first phase of the study, we examined the growth, biomass production and biochemical composition of Chlorella vulgaris using semi-continuous cultures employing three growth media (LC Oligo, Chu 10 and WC media) to enable the selection of the most appropriate growth medium. The highest cell density, chlorophyll a, carbohydrate, protein and lipid concentration were found in Chu and LC Oligo media. Due to the cost effectiveness of using LC Oligo medium, it was the chosen as the preferred medium among the three tested media. The calorific values of C. vulgaris at different phosphorus (P) levels were investigated in the second phase of this study. Calorific value reported under replete concentration (13.78 kJ g-1) was less than those found under P limitation (30.47-33.07 kJ g-1). The highest calorific values without growth retardation were obtained at the 10-6 mol L-1 P. The third phase of this research involved determinations of growth, biomass production and biochemical composition of C. vulgaris under varying cadmium (Cd), phosphorus (P) and nitrogen (N) concentrations. Three P (6.0x10-7, 2.3x10-6 and 2.3x10-4 mol L-1) and N (2.9x10-6, 1.1x10-5, 1.1x10-3 mol L-1) concentrations were tested one at a time with or without the addition of Cd at 10-7 and 2.0x10-8 mol L-1. Cadmium at 10-7 mol L-1 severely reduced growth and biomass production when P or N were limiting. Under N limitation total intracellular carbohydrates were accumulated most intensively compared to the P treatments with or without Cd. The presence of 2.0x10-8 Cd stimulated higher carbohydrate production when P was limiting. Protein productivity decreased with decreasing N and P concentrations. Total protein was highest in the control. Under nutrient replete conditions, the growth and biomass inhibitory effects of xxii Cd were significantly reduced. Combined P limitation and Cd exposure stimulated higher total lipid production than only P or N limitation. Triacylglycerols (TAG) was the most accumulated lipid class under P and N limitation and Cd stress among all the neutral and polar lipid classes. Increasing P and N limitation and Cd exposure resulted in higher SAFA and MUFA concentrations. 16:1n - 11 was an exception among the MUFA as its levels decreased at low N. Total PUFA and ω3 PUFA levels, and PUFA:SAFA ratios increased under healthy growth conditions (high P and N without Cd). An exception among the PUFA was 18:2n 6 that responded to P treatments differently as its levels increased with increasing P and N limitation. A significant (p<0.05) positive relationship of PUFAs, AMPL and PL with P and N was observed. Total SAFA, 14:0, 18:1n 9 and 18:2n 6 were positively related to Cd and negatively correlated with P and N.
Estudo da fauna de Pimplinae (Hymenoptera: Ichneumonidae) em áreas de cerrado no estado de São Paulo
(Universidade Federal de São Carlos, 2012-04-10)
Loffredo, Ana Paula da Silva
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Dias, Angélica Maria Penteado Martins
;
https://lattes.cnpq.br/8637344058859147
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https://lattes.cnpq.br/2740297866888476
This study aimed to contribute to the knowledge of Brazilian fauna of Pimplinae through the characterization and quantification of their genera and species in Cerrado areas of State of São Paulo. Using Malaise traps and "sweeping" the vegetation in 11 localities in the State of São Paulo, the sampling points were placed in protected areas, especially in Ecological Stations and State Parks and an area of the campus of Universidade Federal de São Carlos, during the period 2006 to 2008. We collected 716 specimens of Pimplinae, distributed in 58 taxa (33 species, with 25 probable new species) and the finding of new records for the Brazilian fauna (14 species). Pimpla Fabricius, 1804 and Neotheronia Krieger, 1899 were the genera with the largest number of individuals and better distribution, being found in all fragments. The sampling points relating to the localities of Santa Rita do Passa Quatro, Águas de Santa Bárbara and Bauru showed high levels of abundance. Considering the values of species richness, no pattern could be observed, as was found similar values of wealth taking place in different locations. The calculated values of the Equitability, the highest values (more than 80%) are in places where the dominance of the genus Pimpla was lower, so higher homogeneity community. It was found that Pimplinae are more abundantly collected in the rainy season, confirming the relationship between abundance and seasonality. Descriptions of new species, the characterization of the remaining and adding information about the geographical distribution of Pimplinae were other important contributions of this work.
Sentidos do medo no discurso político eleitoral brasileiro contemporâneo
(Universidade Federal de São Carlos, 2012-04-10)
Sakai, Daiane Ramon Fagundes
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Piovezani Filho, Carlos Félix
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https://lattes.cnpq.br/1677609008094603
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https://lattes.cnpq.br/2206197287322706
This work aims to analyze the meanings of the word "fear" in the brazilian electoral political discourse. More precisely, based on the principles of Discourse Analysis derived from Pêcheux and his group, the aim here is to interpret statements that were generated by the major candidates for president in the Free Television Time for Election (HGPE) campaign of the years 1989, 1994, 1998, 2002 and 2006. The specific objectives refer to the discursive description and interpretation of the acting of the word "fear", and will be guided by the hypothesis that the meaning of that word will be built as it is inserted in one or another discursive formation and employed in one or another condition of production. The corpus of research is constituted based on an initial triage undertaken on all HGPEs of these presidential campaigns, through exclusive selection of statements in which the lexeme "fear" is used explicitly. In order to achieve these goals, the first chapter presents some reflections on the various facets of fear in history, focusing on biological, cultural, historical and political aspects. Then the second chapter lists some aspects of what could be a brief history of fear of the left and right in Brazil. Finally, the last chapter presents some synthetic considerations Discourse Analysis, in order to, from them, the statements contained in the word fear can be analyzed in a discursive perspective. Regardless of the ideology of the candidate, that is, right or left, it is concluded that the use of the word "fear" is present in both discourses in order of slandering the opponent, and hence manipulate the voter.
Efeitos do exercício físico sobre a expressão hepática de activina A e folistatina em modelo de doença hepática gordurosa não acoólica em ratos
(Universidade Federal de São Carlos, 2012-04-10)
Silva, Rafaella Nascimento e
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Leal, Ângela Merice de Oliveira
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https://lattes.cnpq.br/7202663545989206
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https://lattes.cnpq.br/4084501298442515
Nonalcoholic Fatty Liver disease (NAFLD) is characterized by fat accumulation in the liver and associated with obesity and insulin resistance. Activin A is a member of the transforming growth factor (TGF)-β superfamily which inhibits hepatocyte growth and induces apoptosis. Follistatin is a glycoprotein which antagonizes the biological actions of activin. Exercise is an important therapeutic strategy to decrease the metabolic effects of obesity. In this study, we evaluated the pattern of Activin A and follistatin liver expression in obese rats submitted to swimming exercise. Adult male Wistar rats were allowed free access to standard rodent chow (control group, C) or HF diet (58% Kcal from fat, high-fat group, HF) during 12 weeks. Glucose tolerance test (GTT) and insulin tolerance test (ITT) were performed at 12 weeks. After 12 weeks, C and HF rats were randomly assigned to a swimming training group (C-Ex and HF-Ex) or a sedentary group (C-Sed and HF-Sed). C-Ex and HF-Ex swam for 45 minutes at 0900h and 1700h, 5 day week-1, for 4 weeks. After this period, rats were submitted again to GTT and then killed by decapitation. Plasma was collected for liver enzymes, alanine transaminase (ALT), aspartate transaminase (AST) and gammaglutamyl transaminase (GGT) determination. Liver was dissected and immediately frozen in liquid nitrogen and stored at -700 C for subsequent analysis. Actvin βA subunit and follistatin mRNA was quantified by real time RT-PCR. HF developed insulin resistance according to GTT and ITT tests. ALT levels were significantly higher in HF-Sed than in C-Sed and significantly lower in HF-Ex than in HF-Sed. AST and GGT did not vary among the groups. Actvin βA subunit mRNA was significantly higher in HF-Ex than in HF-Sed. Follistatin mRNA was significantly lower in C-Ex and HF-Ex compared to C-Sed and HF-Sed, respectively. There was no evidence of steatosis or inflammation (grade 0) in C. In contrast, in HF the severity of steatosis varied from grade 1 to grade 3. This was not associated with inflammation or fibrosis. After the training period, HF-Ex showed improvement in the extent of liver parenchyma damage, the severity of steatosis varying from grade 0 to grade 1. These data suggest that exercise may reduce the deleterious effects of high-fat diet on liver and the local expression of activin-follistatin may be involved.
Influência de polipropileno maleado no comportamento de fratura (EWF) de compósitos de polipropileno/fibra de vidro
(Universidade Federal de São Carlos, 2012-04-11)
Bollini, Guilherme Silva
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Sousa, José Alexandrino de
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https://lattes.cnpq.br/7737833809468759
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https://lattes.cnpq.br/7644671617057335
Thermoplastic composites reinforced with short glass fibers, to be used in technical engineering applications, usually requires a good balance of properties, such as strength and tenacity. For the case of the composite of polypropylene reinforced with glass fibers, which presents a superior cost/mechanical performance when compared to other composites with matrices like polyamide and polyesters, high mechanical performance can only be achieved by an increase in fiber-polymer interfacial interaction, which is low due to the non-polar character of the PP matrix. This problem was solved by the adequate use of aminosilane coupling agent combined with an interfacial compatibilizer and its ideal content, which defines the balance between properties like strength and tenacity, still is a matter that needs further investigation. Therefore, the main goal of the present work was to evaluate the influence of maleated PP (PP-g-MAH) compatibilizer on short therm mechanical properties (tensile, flexural and impact strength) and on mechanical fracture mechanism, through the analysis of essential work of fracture (EWF), in composites of PP reinforced with equivalent fiber contents (30% in weight in the composite) of two types of glass fibers with different sizings, one compatible with matrices consisting of PP (GF968) and the other compatible with polar matrices such as polyamides (GF983). The tensile, flexural and impact strength analysis along with SEM microscopy, showed that the failure in these composites is due to achieving the maximum shear strength of the interface between the matrix and the PP-co-siloxane copolymer interphase. The results of EWF showed that the main contribution to the process of deforming energy dissipation it s attributed to the specific essential work of fracture (we), during the creation of new surfaces, associated to the mechanism of decoupling, pullout and fiber-polymer interface/interphase deformation.
Educação especial no estado de São Paulo : análise documental do período de 1989 a 2010
(Universidade Federal de São Carlos, 2012-04-11)
Martins, Larissa de Souza
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Caiado, Kátia Regina Moreno
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https://lattes.cnpq.br/0803778280883949
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https://lattes.cnpq.br/6753346471872324
This paper aims to know and analyze the public policies in the Special Education field in the State of São Paulo in 15 years of PSDB government (1995 2010), as well to discuss the impact of these policies in the amount of enrollment of students with disabilities in the different levels and types of the basic education. The resources for this research were: the state law from 1995 to 2010 in the field of special education, the statistic data of School Census presented in Statistics Synopsis (1998-2006) and in the Microdata (2007-2010) available in INEP website. During the period studied, it was observed that the State of São Paulo presented high indices of Human Development Index (HDI) and Gross Domestic Product (GDP), compared to other Brazilian States. Despite these high indices, São Paulo is a State whose level of social inequality is high. Thus, the economic inequality unfolds on many other inequalities, such as the inequality which is related to the access to employment and working conditions, housing, and access to transportation, leisure and essential public services like safety, health and education. In the period of study, it was found 45 documents, including laws, ordinance, resolutions and decisions. For the analysis and discussion of the documents, three main areas were used, which are considered important to the discussion on special education in the State, such as: pedagogical support to the students with disabilities, the teacher of special education and nonprofit institutions new institutions and agreements with the State. Concerning the impact of these policies in the enrollment of the students with disabilities, it is noted that until 2006 the number of enrollment of these students were concentrated in the segregated spaces (exclusively special school and special classrooms in regular schools). From 2007, there has been a significant increase in the number of the enrollments in common classrooms in the regular school. However, we can observe that most of these enrollments were concentrated in the elementary school. Another important fact is the number of enrollments of Youth and Adult Education, which has risen significantly during this period. We may also note that the enrollments in high school vary from a year to another and that the number of enrollments of students with disabilities in the regular school, in its majority, is from people with mental disabilities, representing almost 50% of the enrollments.
Avaliação de sistemas compatibilizantes nas correlações entre processamento e propriedades térmicas, mecânicas e de transporte em nanocompósitos de blenda HDPE/LLDPE e OMMT
(Universidade Federal de São Carlos, 2012-04-11)
Passador, Fabio Roberto
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Pessan, Luiz Antonio
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https://lattes.cnpq.br/8276650236213537
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https://lattes.cnpq.br/0152213852695153
Polyolefin nanocomposites have attracted significant technological and scientific interest due to the possibilities of improvements in thermal, mechanical and barrier properties. However, the hydrophobic nature of polyolefins poses a challenge to the exfoliation and dispersion process of the nanoclay in the polymeric matrix, requiring usually the use of compatibilizing agents. In this work, it was studied the influence of the blending protocol of the components and the effects of the addition of three compatibilizing systems (HDPE-g-MA, LLDPE-g-MA and mixture of HDPE-g-MA and LLDPE-g-MA) in HDPE /LLDPE blend-based nanocomposites. HDPE-g-MA has a higher viscosity and play a important role in the breaking and dispersion of the clay tactoids. The LLDPE-g- MA, with lower viscosity, helped in the intercalation process of the polymer chains between the nanoclay s lamellae and the mixing of the compatibilizing agents optimized the breakdown and intercalation process, and dispersion of the organophilic clay in the polymeric matrix. HDPE/LLDPE/OMMT nanocomposites with predominantly intercalated structure were obtained using different compatibilizing systems and concentrations of nanoclay. The thermal, mechanical and transport properties were strongly affected by the different compatibilizing systems. The mixture of compatibilizing agents (HDPE-g-MA and LLDPE-g-MA) produced a stronger interface between the dispersed phase and the polymeric matrix contributing to the increase in rigidity, elastic and flexural moduli of the nanocomposites. The transport properties showed that the nanocomposites behave as good barrier to water vapor and but showed low barrier characteristics to CO2 and O2. The decrease of the permeability coefficient is related to the use of compatibilizer systems which provided a good dispersion of the inorganic filler, good wettability of the matrix and strong interactions with the interface which could facilitate the diffusion process.
Base de dados morfológicos de terminologias do português do Brasil : descrição e análise morfológica com vistas à disponibilização on-line
(Universidade Federal de São Carlos, 2012-04-12)
Coleti, Joel Sossai
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Almeida, Gladis Maria de Barcellos
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https://lattes.cnpq.br/4046789388750478
;
https://lattes.cnpq.br/6204919581461383
The researches in Linguistics and Language fields are extremely rich, consistent and efficient in Brazil, however, still aren‟t expressive in the Brazilian researches the issues involving morphology and terminology. In this context, this research aims to describe the structure of two terminological repertoire (Nanoscience / Nanotechnology and Biofuels), representing the area of Engineering, at the level of the internal structure of its constituent terms, checking out the main processes of terms construction. Using this morphological description was organized a database for future computational implementation and on-line data availability. Later, for the higher productivity processes the Rules of Words Formation were established, as established by SILEX Model. This model of morphological analysis was designed by Danielle Corbin (1987, 1991, 1997, 2004) and developed by his team. This research aims to fill a gap, analyzing and describing the possible morphological processes in Portuguese (Brazilian variant) terminology and examining the most productive rules by which words are formed.
Modelo destrutivo com variável terminal em experimentos quimiopreventivos de tumores em animais
(Universidade Federal de São Carlos, 2012-04-12)
Zavaleta, Katherine Elizabeth Coaguila
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Rodrigues, Josemar
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https://lattes.cnpq.br/4359114733394761
;
https://lattes.cnpq.br/2822435460109129
The chemical induction of carcinogens in chemopreventive animal experiments is becoming increasingly frequent in biological research. The purpose of these biological experiments is to evaluate the effect of a particular treatment on the rate of tumors incidence in animals. In this work, the number of promoted tumors per animal will be parametrically modeled following the suggestions given by Kokoska (1987) and Freedman et al. (1993). The study of these chemopreventive experiments will be presented in the context of the destructive model proposed by Rodrigues et al. (2010) with terminal variable that allows or censures the experiment at time of the animal death. Since the data analyzed in this field are subject to excess of zeros (Freedman et al. (1993)), we propose for the number of promoted tumors a negative binomial distribution (NB), a zero-inflated Poisson distribution (ZIP), and a zero-inflated Negative Binomial distribution (ZINB). The selection of these models will be made through the likelihood ratio test and the AIC, BIC criteria. The estimation of its parameters will be obtained by using the method of maximum likelihood, and further simulation studies will also be realized. As a future proposition to finalize this project, it is suggested the Bayesian methodology as an alternative to the method of maximum likelihood via the EM algorithm.
Catalisadores de CuO, Fe2O3 ou Co3O4 suportados em TiO2, CeO2 ou ZrO2: preparação via Sol-gel in situ ou impregnação e avaliação na redução de NO com CO
(Universidade Federal de São Carlos, 2012-04-13)
Sierra-Pereira, Cristiane Alves
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Urquieta-González, Ernesto Antonio
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https://lattes.cnpq.br/5913784674766133
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http://lattes.cnpq.br/2389975677904655
The minimization of the emissions of nitrogen oxides (NOx) is a subject of crucial interest, since them cause serious environmental problems which affect human health, vegetation and fauna. With the purpose to abate NOx, processes involving their catalytic reduction show strong potential. In the case of the reduction of NO with CO a meaningful advantage arises, once both pollutants are removed simultaneously. In order to obtain efficient and stable catalysts for this reaction, many studies have been done with the aim to improve the catalytic activity by achieving a better favorable metal-support interaction to the occurrence of the reaction and a better distribution of the active phases on the support. In this context, the objective of this study was to prepare Cu, Fe and Co based catalysts supported on TiO2, CeO2 and ZrO2 to be applied in the abatement of NO with CO. The addition of the precursors of the active phases was made during the synthesis of the support via the sol-gel method (in situ addition). Furthermore, catalysts with the same composition were prepared by conventional methods. Results from the N2 adsorption/desorption measurements show that the sol-gel method was efficient to prepare supports with improved textural properties. H2-TPR and UVVIS-DRS data evidenced the presence of Cu, Fe or Co oxides in the respective catalysts, which mostly did not show characteristic X-ray diffraction peaks of those oxide phases, suggesting their high dispersion on the supports. In general, results of the reduction of NO to N2 with CO revealed that the catalysts prepared via sol-gel are as active as those prepared by conventional routes, which demonstrate the great potential of the catalysts preparation via the sol-gel in situ procedure, which diminishes the number of the synthesis steps saving time and energy. In general, among the studied supports, ceria presented a more favorable metal-support interaction. In the presence of O2, SO2 and water steam, catalysts 6,5Cu/CeP, 5,5CuZrSG and 8,4Fe/TiC showed no significant changes in their activity and selectivity, indicating that they present high stability to be used under the severe conditions of real processes.
Comunidades de aves frugívoras e nectarívoras e disponibilidade de recursos em dois estádios sucessionais de regeneração de Mata Atlântica
(Universidade Federal de São Carlos, 2012-04-13)
Silva, Bruna Gonçalves da
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Piratelli, Augusto João
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https://lattes.cnpq.br/4747322084219058
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Christianini, Alexander Vicente
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http://lattes.cnpq.br/2295622727813765
The availability of food resources in different degrees of regeneration of a forest may contribute to possible variations in species abundance and composition of bird communities. The main objective of this study is to investigate the relationship between the structure of frugivores and nectarivores bird communities and the availability of food resources - flowers and fruit - in two successional stages of regeneration (initial-secondary and advanced) of the Atlantic Forest. To reach this goal, frugivores and nectarivores birds were monitored in representative sites of these stages, considering seasonality and production of flowers and fruits at each stage over a year. The frugivores and nectarivores were compared in richness, species composition, relative abundance and diversity. We used fixed point counts for sampling birds, and to estimate the production of flowers and fruits, we delimited three replicates of four plots (10x10m) at each stage of succession. The two studied successional stages differed significantly in most of the analyzed vegetation structure variables. The composition and relative abundance of some bird species also showed differences between the two stages of regeneration, but not quantitative parameters as richness and diversity. There were variations in plant community phenological curves and in the amount of the floral production between the two successional stages. The relative abundance of frugivores had a significantly positive relationship with the amount of available ripe fruits. In the advanced stages, the relative abundance of nectarivores birds had a significantly positive relationship to the number of individuals of flowering epiphytic plant species; while in secondary stages of regeneration there was no change in the abundance of nectarivores birds in response to floral resource availability. Thus, in areas that are not continuous to primary forests may occur in a declining population of frugivorous and nectarivorous birds in response to variations in the phenological curves and food shortages causing changes in the processes of breeding and selection of plant species, which can bring significant implications for the conservation of birds and plants.
A perspectiva de uma antropologia behaviorista radical: cultura, variação, seleção e transmissão
(Universidade Federal de São Carlos, 2012-04-13)
Leugi, Guilherme Bergo
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Rose, Julio Cesar Coelho de
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https://lattes.cnpq.br/3386857761295187
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https://lattes.cnpq.br/2139829479046389
Since the early writings on Radical Behaviorism there has been analysis of what is commonly known as the cultural level of variation and selection. Over the past 25 years, approximately, with growing interest by the scientific community on the culture topic, as well as conceptual developments regarding behavioral contingency analogies for the cultural determination, studies on Selection by Consequences model specifically for the culture have gained prominence. Skinner textually defines culture in many different ways throughout his work; nevertheless we believe it was possible to analyze them and theoretically propose an alternative understanding, based on most general principles of Radical Behaviorism with special attention to this theory determinism, regarding the functional relations established among environment and human actions. We understand that it is possible to comprehend the cultural system of determination of behavior as related to the environment which is historically and socially produced, not only referring to sets of behaviors repeated over generations. Cultural practices, as a proposition, would be redefined as parts of the behavioral environment (in this case, comprehended as reinforcing cultural practices). We also believe that it was possible to define a schematic model of determination based on the environmental and historical aspects, which is expected to be comprehensive in relation to culturally determined behavior (whether those behaviors produced in groups or those emitted alone, but which still are socially build). After these analyzes, we took a quick foray into Anthropology attempting to establish ways for the methodological inclusion of ethnography in the field of behavioral study of the culture. The current work is intended as an interpretative possibility and has not, of course, exhausted the subject matter or completely solved the problem of environmental determination on culture.