Browsing by Issue Date, starting with "2011-08-09"

Filter results by year or month

Now showing 1 - 20 of 19521

Estrutura eletrônica de anéis quânticos
(Universidade Federal de São Carlos, 2011-08-09)
Oliveira Neto, Vivaldo Lopes
;
Richard, Victor Lopez
;
https://lattes.cnpq.br/0638704940221279
;
https://lattes.cnpq.br/6937374774888445
The nanoscopic structures with ring topology, or quantum rings, have attracted the interest due to their unique rotational symmetry and the possibility of checking fundamental quantum phenomena. Among them, the study of Aharonov-Bohm interference effects appears with special emphasis. Analytical calculations of the electronic structure of quantum rings were performed for the electron confined in one-dimensional and threedimensional potentials. These calculations were complemented by the electronic structure simulation of the valence band using the k.p method, main objective this work. This theoretical contribution is a part of a collaboration with experimental groups of growth and spectroscopy which deal with problems related to the manipulation of electronic states and spin properties of quantum rings. The ground states of both electrons and holes in quantum dots (quasi-zero-dimensional systems) have zero angular momentum (in the absence of magnetic fields and low fields) and exhibit a diamagnetic response of the spin states in the presence of an external magnetic field. In non-magnetic quantum dots, the spin properties are mainly attributed to the electron spin and the heavy hole. On the other hand, it is assumed that the light holes have a minor role in the properties of the exciton ground state. Our results show that the interband coupling may lead to the angular momentum hybridization of the electronic states, even in the ground state and the the light hole may assume a relevant role. The adaptation and improvement of calculations of the electronic structure using the k.p methods were two of the main objectives of this work. The theoretical tools developed aim to contribute to the establishment of protocols for optimal use and application of such systems.
Segregação socioespacial: os condomínios horizontais na cidade de São Carlos/SP
(Universidade Federal de São Carlos, 2011-08-09)
Nardin, Juliana de
;
Francisco, José
;
https://lattes.cnpq.br/0330065027402518
;
https://lattes.cnpq.br/8649723884955257
This dissertation focuses the closed horizontal condominiums and subdivisions in the city of São Carlos that appeared in the 1970s consolidating itself as the form of housing of highincome classes that seek parts far from the center to live within the walls. In 1976 in São Carlos, it was deployed Parque Sabará the first enterprise of this tipe since then, the condominiums expanded and hold large areas of the city. They are located as in portions more remote as in the consolidated urban area. This dynamic is increasing in many Brazilian cities, as evidenced by the growing production of work aimed at this issue. This way, there are discussions and questions the social perspective, as an ingredient of socio-spatial segregation, or in relation to the legality of the establishment of these enterprises, that do not have specific legislation that regulates us. Therefore, the dissertation refers to the study and analysis of closed residential subdivisions and condominiums in São Carlos, and the transformations inserted in the context of the deployment of these enterprises. The research is based in literature search, documentary, photographic and visits to investigate the production of urban space from the closed condominiums and subdivisions set in a dynamic real estate production. This study was guided by the discussion of socio-spatial segregation and the capitalist production of space that impose occupation patterns that spread and are responsible for maintaining the capital.
Licitações e editais de empreendimentos públicos de construção e sua influência no processo de projeto
(Universidade Federal de São Carlos, 2011-08-11)
Zanferdini, André Saretta
;
Novaes, Celso Carlos
;
https://lattes.cnpq.br/7340467051481570
The delay in the conclusion of the public construction projects, that are frequently paralyzed, as well as the foreseen cost rise, may highlight the existence of recurrent technical, financial, political, administrative or judicial problems, which were originated even before hiring a firm. Therefore, this paper aims to analyze how the bidding and engineering work contracts refereeing legislation, within the Powers of Union, of States and Municipal district, contributes so that the solutions taken from designs do not get fully attended during the process of public construction ventures. Such a purpose, which initially required additional knowledge on public construction projects and design process, which was achieved with the execution of the literature review and the case studies, that in turn involved three public contracting companies and three contracted firms, as a way to get different perceptions of the same process. The evidence obtained from the contract bidding analysis, properly validated with answers from series of questions applied to contracting party and contracted, along with the literature review provided the conclusion of this work, as well as the creation of a proposal that aims to reduce the problems related to the accomplishment of the solutions taken from designs of public construction projects.
Caracterização trófica da ictiofauna da Represa do Beija-Flor, na Estação Ecológica de Jataí, Luiz Antônio, SP
(Universidade Federal de São Carlos, 2011-08-11)
Oliveira, Elisa Martins de
;
Peret, Alberto Carvalho
;
https://lattes.cnpq.br/0995579236780271
;
https://lattes.cnpq.br/3345072251027342
The feeding habits, reproduction and growth of omnivores, herbivores, detritivores and iliófagos fish species from the Beija-flor reservoir in Jataí Ecological Station were investigated. This provides information on the trophic interaction between species, feeding habits, establishing guilds and also provides subsidies for monitoring the the Beija-flor reservoir. Emphasis was placed on Prochilodus lineatus, presented as a larger sample in this study, so the reproduction and growth of only this species was analyzed. Eleven samplings were made between September 2008 and October 2009. The diet was assessed through the food importance index. Three species showed an herbivorous diet (Leporinus striatus, Schizodon nasutus and Metynnis sp.), two species were omnivorous with a tendency to insectivory (Astyanax altiparanae and Astyanax fasciatus), two species were omnivorous with tendency to herbivory (Leporinus aff. friderici and Geophagus brasiliensis), one species was ilyophagous (Cyphocarax modestus) and one species was detritivore (Prochilodus lineatus). The reproduction of Prochilodus lineatus occurred between November and February and their allometric growth was negative. The richness of organic matter in the sediment of the Beija-flor reservoir is evidenced in the high proportion of organic matter found in the C. modestus and P. lineatus stomach contents. Detritus was a food source of higher quality for these species so this reservoir provides an important place of feeding. There is no seasonal pattern of feeding overlap between species, that was caused by significant amounts of feeding overlap occurred in the both seasons. The analysis of dietary overlaps showed that food partitioning was higher within detritivores. Although there was overlap between many the species, there is no competition between them because the niche was shared. The Beija-flor reservoir is an environment where the detritivore food chain has an important role in the system because the reservoir is an ecosystem of decomposition.
Ensaios bioquímicos e celulares para a identificação de novos inibidores de TcGAPDH seletivos à HsGAPDH
(Universidade Federal de São Carlos, 2011-08-11)
Soares, Fabyana Aparecida
;
Montanari, Carlos Alberto
;
https://lattes.cnpq.br/9200533791228786
;
https://lattes.cnpq.br/7008669907649678
Chagas disease is a tropical neglected illness; nearly 10 million people are infected, in 2008 it was responsible for the deaths of about 10 thousand people. At present, only two medicines (benznidazol and nifurtimox) are available to treat this disease and they lack of efficacy/safety in chronic phase. This scenario is changing due to advances in the search for new trypanocidal agents. The glyceraldehyde-3-phosphate dehydrogenase (GAPDH), a glycolytic enzyme of Trypanosoma cruzi appears as a suitable target for drug discovery. In the present work, a kinetic study using Isothermal Titration Calorimetry (ITC) were carried out to investigate the activity of eight NAD+ analogs against GAPDH. ITC was been used to measure the heat exchange during reactions making it a powerful tool of identification of bioactive compounds. Study compounds showed inhibitory activity on TcGAPDH enzyme and its homologous human GAPDH. The apparent inhibition constant values (Ki app) were in the range from 15,98 to 91,25 M describing competitive inhibition mechanisms. Important steps in medicinal chemistry maybe biochemical followed by cell-based assays were, for instance, Saccharomyces cerevisiae could be used as a model to assess the cytotoxic activity of compounds. The technique used to study the action of chemical compounds in yeast was the fluorescence spectroscopy. Five out of eight compounds showed no activity against S. cerevisiae. This is a good indication that study compounds have low cytotoxicity, which makes them candidates for in vitro studies on the parasite.
Estudo da corrosão de aço AISI 1020 em meio de petróleo
(Universidade Federal de São Carlos, 2011-08-11)
Rios, Emerson da Costa
;
Souza, Ernesto Chaves Pereira de
;
https://lattes.cnpq.br/1505400360366643
;
https://lattes.cnpq.br/8791195940411823
The chemical attack on crude oil, which contains corrosive compounds such as H2S, CO2, naphthenic acids and salts dissolved in the aqueous phase, combined with effects of varying pH, temperature, flow and pressure, has great influence on the corrosion rate in equipment steel. Given the small number of papers in the literature relating to the study of corrosion of steel in contact with crude oil, and the importance of the topic, this study aimed to characterize the main corrosion of steel AISI 1020, which has similar chemical composition most of the steel pipelines in oil. Due to the high resistivity of oil, this study used the techniques of Electrochemical Impedance Spectroscopy, EIS, and Electrochemical Noise, EN, for the measurements of steel corrosion. Initially tests were carried out mass loss in steel samples immersed in simulated oil with different amounts of acetic acid in order to define the concentrations and their corrosive effects. Considering the oil contained in the aqueous phase were studied by EIS types of steel corrosion in oil OAPI 17 with different amounts of sea water emulsified. The spectra obtained by EIS showed three semi-circles, and at high frequencies (> 10Hz), the predominant effect of the capacitive and resistive bulk oil and in medium (10 - 0.05 Hz) and low (<0.05 Hz) frequencies the effects of adsorption, electrical double layer and charge transfer resistance at the interface of the electrode is predominant. Optical images were obtained after the accelerated corrosion of steel/emulsions systems and for polarization curve measurements in situ of the steel/water extract, where there was variation in the morphology of the attack with the variation in the amount of water emulsified in oil. Considering the presence of corrosive three species: sea water (0.5 and 4.0%), naphthenic acid (500 and 3,000 ppm) and H2S (50 ppm and 1,000), and using a 23 factorial design of experiments to obtain the effect cross these species, the corrosion process was investigated using the technique of EN in the open circuit potential, EOC. Analysis of current noise signals was done with the help of wavelet transform which gave rise to the power distribution diagrams. These diagrams show that there is a greater tendency to pitting corrosion in environments where the concentration of H2S the amount of water are higher, which means that for the greater amount of naphthenic acid corrosion in general the contribution was relatively higher. The results observed through the power distribution diagrams were confirmed by morphological analysis of the samples corroded. The methods used in this work allowed to estimate the speed and identify the predominant type of corrosion of steel in oil containing aggressive chemical species that are commonly found in Brazilian petroleum.
Estratégias analíticas para a avaliação química de solos e liquens da Antártica marítima
(Universidade Federal de São Carlos, 2011-08-12)
Guerra, Marcelo Braga Bueno
;
Pereira Filho, Edenir Rodrigues
;
https://lattes.cnpq.br/3394181280355442
;
https://lattes.cnpq.br/7474474218219859
The aim of this PhD thesis is the ample study of soil and lichen samples from Antarctica, collected in regions under strong anthropogenic impact. Surface soil samples were collected around several scientific stations: Brazilian (Comandante Ferraz), Argentinian (Esperanza), Chilean (Frei Montalva and Escudero), Chinese (Great Wall), Russian (Bellingshausen) and Uruguaian (Artigas). Control soil samples were also collected, for representing areas with low anthropic influence (far away from the local stations). Lichen samples (Usnea antarctica and Usnea aurantiacoatra) were collected near the Chilean and Russian stations, as well as in a control point far 0.5 km from the nearest station. X-ray Fluorescence was used as an analytical tool for the preliminary evaluation on metal contamination in the soil samples. Several extraction solutions (aqua regia, sequential extraction procedure, DTPA and CaCl2 solutions) were used to assess the amounts of metals in the soil samples. For Cd, Cr, Cu, Mn, Ni, Pb and Zn determination in the soil extracts, some analytical strategies were employed, such as fast sequential determination by FAAS in the conventional mode, as well as by using STAT-FAAS and TS-FF-AAS for evaluating Cd and Pb determination in DTPA soil extracts. The chemometric tools: HCA, PCA and PARAFAC were used for soil data treatment. Enrichment factors were calculated in order to infer about the degree of soil contamination. Soil samples collected around the stations diesel tanks were enriched with Cr and Pb. Soil samples from Esperanza station are the most contaminated ones, reaching 46, 18993 and 4823 mg kg-1 for Cd, Pb and Zn, respectively, for the strongest contaminated sites. The use of Flame-AAS and STAT-FAAS in the fast sequential mode appears as a good way that combines higher analytical throughput and better sensitivity (STAT-FAAS). Besides that, minimization of toxic wastes generation and xv economy of reagents are analytical advantages of this approach. The employment of chemometric tools are also an important strategy allowing the visualization of sample groupings and the variables related to them. A fast and simple method for pseudototal determination of metals in soil samples was developed. In this method, the samples were extracted with lower amount of aqua regia and in a reduced time (when compared with the official method) by using inexpensive centrifuge tubes. LAICP- MS was evaluated for direct determination of lead in the lichen samples and to access the distribution profile of this element in the organism structures. Lichen samples from heavily anthropogenic sites (near the stations) have the highest Pb concentrations ([Pb] = 8.71 mg kg-1 for the most contaminated sample and [Pb] = 1.12 mg kg-1 for the control point). LA-ICP-MS emerges as an adequate analytical method for direct Pb determination in lichen samples, notably when using carbon (naturally present in the samples) as internal standard. The medulla region of the lichen thalli is the main Pb bioacumulating lichen region.
Adaptações e respostas da modulação autonômica cardíaca frente a reabilitação hospitalar após cirurgia de revascularização do miocárdio: influência da função ventricular
(Universidade Federal de São Carlos, 2011-08-12)
Mendes, Renata Gonçalves
;
Silva, Audrey Borghi
;
https://lattes.cnpq.br/4855616925791895
;
https://lattes.cnpq.br/9634590922242052
A tese constou de 3 estudos descritos a seguir. O estudo I, intitulado: Programa fisioterapêutico hospitalar de curto periodo composto por exercícios físicos supervisionados melhora a função autonômica cardíaca após cirurgia de revascularização do miocárdio - Estudo randomizado e controlado teve como objetivo investigar se um programa fisioterapeutico hospitalar melhora a funcao autonomica cardiaca (FAC) apos a cirurgia de revascularizacao do miocardio (CRM). 47 pacientes pos- CRM, foram randomizados para: grupo de exercicios (GE,n=24) ou cuidados usuais de fisioterapia (GCU, n=23). A avaliacao da FAC incluiu medidas da variabilidade da frequencia cardiaca (VFC). Na alta hospitalar, GE apresentou maiores valores dos indices rMSSD, AF,SD1, STD RR, SD2, DFA α1, DFA α2, entropia aproximada e media RR, p<0,05. Contrariamente, maiores valores da media FC, BF e BF/AF (balanco simpato-vagal) foram encontrados em GCU. Concluimos que um programa fisioterapeutico de exercicios fisicos, realizado durante a internacao pos-CRM, melhora a FAC. Na sequencia, o estudo II, intitulado: Função ventricular esquerda e adaptações autonômicas cardíacas após RC hospitalar em curto período - Estudo clínico prospectivo. objetivou avaliar as adaptacoes autonomicas cardiacas em pacientes com diferenca na funcao do ventriculo esquerdo (FVE) submetidos a CRM e a reabilitacao cardiaca (RC). Em 44 pacientes divididos em grupo FVE normal (FVEN >55%, n=23) e FVE reduzida (FVER= 35-54%,n=21) a FAC foi avaliada antes e apos a RC. Foi encontrada interacao grupo (FVEN vs FVER) vs tempo (efeito da RC) para dimensao de correlacao (CD) e SD2, com melhora significativamente maior para FVER. Pacientes com FVER apresentaram melhor adaptacao autonomica cardiaca frente a RC. Finalmente, o estudo III, intitulado: Respostas autonômicas cardíacas induzidas pelo exercício durante a RC hospitalar em pacientes submetidos a cirurgia cardíaca e com funções ventriculares diferentes. avaliou se os exercicios fisicos realizados na RC hospitalar podem evocar respostas autonomicas diferenciadas em pacientes pos-CRM e FVE diferentes. Nos mesmos pacientes do estudo II foram avaliados os indices da VFC em repouso e durante os exercicios metabolicos e deambulacao no primeiro dia pos-operatorio (PO1) e na alta hospitalar, respectivamente. No PO1 foram observadas diferencas (media RR e media da FC) entre o repouso e exercicio em ambos os grupos. Durante a deambulacao foram encontrados menores valores da VFC (STDRR, TINN, SD2, entropia Shannon e dimensao de correlacao) para FVER, assim como, para a variacao entre repouso e deambulacao para os indices STDRR, RR tri, TINN, SD2, rMSSD e dimensao de correlacao, P<0,05. Concluimos que em pacientes pos-CRM e com FVE normal, o exercicio fisico hospitalar desencadeou resposta autonomica cardiaca mais atenuada comparado a FVEN.
Extração de polissacarídeos do caroço de açaí (Euterpe oleracea)
(Universidade Federal de São Carlos, 2011-08-12)
Freitas, Danieli Melo de
;
Pessoa, José Dalton Cruz
;
https://lattes.cnpq.br/4212703554284544
;
https://lattes.cnpq.br/5713377915953397
The development of the productive chain of agribusiness açaí depends on the proper disposal of by-products generated. The fruit is used currently only the mesocarp for human consumption, creating an environmental problem, since the core represents approximately 75-81% of the total weight of the fruit. The stone of açaí literature reports the presence of inulin, polyphenols and other carbohydrates. Among these inulin stands out for its low calorie and therefore applied in food production light in fat or low fat, as a substitute for fat and sugar. Despite being distributed worldwide, is not produced in Brazil and its imports makes it a product of high cost. Thus the design goal was to develop a method for extraction of inulin on a laboratory scale, aiming its industrial production. In the first stage of the project was undertaken to adapt the methodology for aqueous extraction of açai and the core of analytical methods for quantification of compounds. In the second stage of the project was carried out an experimental design to evaluate the effect of variables in the process of extracting the content of polysaccharides: temperature, particle size of the lump, mass / volume ratio and stirring speed of the mixture. In the third step, through the hydrolysis and HPLC analysis, was not found the polysaccharide inulin. By NMR analysis and infrared is proposed that this polysaccharide is a galactomannan. The content of the core polysaccharide, soluble in water, ranged 2-7%. The insoluble fraction of the core, obtained by extracting basic, representing 15% of the total mass.
Influência da adição de um fundente sintético no mecanismo de coloração final de revestimentos cerâmicos
(Universidade Federal de São Carlos, 2011-08-12)
Santos, Geocris Rodrigues dos
;
Morelli, Márcio Raymundo
;
https://lattes.cnpq.br/0172837599844991
;
https://lattes.cnpq.br/2466041074193362
The presence of iron oxide in ceramic tile mass contributes to the reddish color firing of the products leading to a lower aggregate value, not to be regarded as a "noble" ceramic. However, the use of raw materials with low levels of iron oxides (Fe2O3) is economically unfeasible in Brazil, since most of the deposits have iron compounds as mineral component. Thus, the objective of this work was that of studying the interaction of the iron element in the final color mechanism of the ceramic tile mass. For this purpose, we have employed several compositions of stoneware tile mass making use of natural raw materials, and a synthetic flow. This flow is constituted of a vitreous phase of the silicates family obtained by fusion/solidification of oxides and carbonates. Such flow influences the color ceramic mass during the process of sinterization modifying the red color firing into whiteness. That occurs when added in compositions containing clays with high levels of iron oxides. Beyond the physical properties obtained from the different employed compositions, we have also used other characterization techniques in order to study the phenomenon, such as: X-ray photoelectron spectroscopy (XPS), Mössbauer spectroscopy, Xray diffraction (XRD), quantitative analysis of phases by Rietveld method and scanning electron microscopy (SEM). The results have shown that the synthetic flow acts as a modifying agent for color when incorporated with values above 33%wt. in the compositions and temperature at 1,100°C . The color firing modification occurs because the chemical composition of the synthetic flow assists to form new iron compounds, thus making the final color firing light. By using this mechanism in the ceramic substrates, the stoneware tiles can be manufactured using low cost clays with high levels of iron oxides. This method proved to be an economical as well as commercial strategy for the ceramic tile industries.
Análise da segurança e saúde do trabalho em empresas de pré-fabricado de concreto utilizando princípios da engenharia de resiliência
(Universidade Federal de São Carlos, 2011-08-17)
Moreira, Fabiano Tofolli
;
Serra, Sheyla Mara Baptista
;
https://lattes.cnpq.br/8528385567782505
;
https://lattes.cnpq.br/9698457469397929
The Safety and Health at Work (SHW) management is recognized as one of the main factors so the enterprises may be able to fulfill their basic goals of coast, term and quality. One of the latest management strategies is the Resilience Engineering (RE) approach that considers the presence of four main principles for appliance: Top Management Commitment, Apprenticeship, Flexibility and Consciousness. Considering the intensive use of the concrete precast building systems it becomes substantial to study this section about the SHW aspects on the RE focus and record the good practices held by the companies. This work is based on the proposal elaborated by Costella (2008) which presents an Evaluation Method of the Safety and Health at Work based on the safety management principles and the RE. The case study method was adopted, a concrete precast producer enterprise was searched, which had a qualified management system, and it accepted to collaborate with the research. It was concluded that the researched Enterprise presents evidence of the application of the RE principles, mainly due to the existence of the SHW management. It was verified that there are ordinary and complementary concerns, such as the operation of critical sectors and the maintenance of the equipment currently used in factories and construction sites.
Um ambiente virtual de aprendizagem suporte para o estudo de funções segundo a proposta curricular do estado de São Paulo
(Universidade Federal de São Carlos, 2011-08-18)
Piero, Pedro José Di
;
Caetano, Paulo Antônio Silvani
;
https://lattes.cnpq.br/0370219014539994
;
https://lattes.cnpq.br/6246980962434995
This paper describes the development of a virtual learning environment for teaching functions, with viewers created using the GeoGebra, constituting one of the products developed in the Professional Masters Program of the University of São Carlos. It is available in Moodle of the Mathematics Department of UFSCar, was created in four topics, one for each learning situation provided in the student diary volume 3 of the third grade of High School of the Secretaria of Education of the State of São Paulo .Each topic consists of activities like lessons, quizzes, sending files and participation in specific forums. The lessons seek to lead the student to acquire the skills provided in the Student notebook. The questionnaires are used to strengthen and verify that learning. The purpose of sending files and participating in the forums is to provide a self-evaluation and development of students' writing skills The environment does not change the principles guiding the curriculum of the State of São Paulo, keeping the content and context of encouraging the development of personal skills, especially those related to reading and writing mathematics. It is expected that the application of the environment, the use of the viewers, the participation in the forums and execution of activities and exercises with the aid of technology, encourage, motivate and facilitate the teaching and learning of mathematics, leading each participant to resize their concepts and knowledge. The participation of undergraduated students in the activities of virtual learning environment seeks to provide grants to train a teacher who can act as mediator, facilitator and challenger of learning, ready to work with students to construct their knowledge through manipulation, exploitation, navigation and communication with the "objects" presented.
Medição de desempenho numa confecção de vestuário: integrando ergonomia situada ao processo de implementação e uso de indicadores de desempenho
(Universidade Federal de São Carlos, 2011-08-18)
Pizo, Carlos Antonio
;
Menegon, Nilton Luiz
;
https://lattes.cnpq.br/5461487552981919
;
https://lattes.cnpq.br/7281425941546899
This research aims to describe, in the organizational dynamics of a clothing manufacturing industry of medium size, more specifically in their sewing unit, the changes occurred during the implementation and use of performance indicators when aggregated in their development concepts and methods of Situated Ergonomics. The Performance Measurement Systems (PMSs) has always been part of the organizations and in recent decades has become more important due to the competitiveness and constant changes of the market as well as evolving toward more balanced structures to include all important factors that influencing the organizations competitiveness. The motivation of this study was the observation that PMSs identifies the priorities of performance in a top-down flow within the organizational structure, usually leaving or passing through the strategy. This process presents a strong bias technocentric, in which it aims to understand the structure and the organization's business processes and relegates to other instances much of real parts which are run by people in the everyday operations. Having the perception of this limitation, among other weaknesses in their development, deployment and use, many of these publishers of these models recommend that development is a participatory process, but does not define the way and depth to examine the reality of working at this level. Situated Ergonomics, in turn, pursued the objectives of well-being of the worker and process performance by analyzing the employee at work during the work activity and its effective contribution through verbalizations and confrontation of representations, so better understand their conditions and determinants. This Situated Ergonomics feature appeared to meet the limitation observed in the development of PMSs in a manner that sought to enter their concepts and methods during the development, deployment and use of performance indicators in the unit of sewing clothing manufacturing industry of medium size. The study was conducted through an action research which aimed to harmonize the cycles of intervention proposed by Haims and Carayon for the implementation of an ergonomics program, based on Situated Ergonomics, and the script development of PMS proposed by Andersen and Fagerhaug. The study indicated that by incorporating concepts and methods of ergonomics located in the development process and review of performance indicators this condition allowed the emergence of knowledge and collective needs, and develop a space for discussion and negotiation that enabled a better understanding of different views on the processes of transformation and its goals on the work carried out and performance indicators. In this context the incorporation proved to be mentioned as an important factor of change in the way the information is used by the SMD stakeholders. Despite the positive aspects of the negotiation space developed in these conditions, it was observed that this area is fragile in the face of contingencies that occur in a medium sized company.
Populações brasileiras da espécie exótica invasora Bubulcus ibis: distribuição da diversidade genética avaliada pelos microssatélites
(Universidade Federal de São Carlos, 2011-08-19)
Campanini, Emeline Boni
;
Del Lama, Sílvia Nassif
;
https://lattes.cnpq.br/7893772074091604
;
https://lattes.cnpq.br/85054542584778
The Cattle Egret (Bubulcus ibis) is a median sized bird, of African origin, considered as an invasive and exotic species in the American continent. In Brazil, first record was in the north, in 1964. The species have been maintaining a pattern of constant population growth, endangering the reproduction and survivorship of native species, as observed in the archipelago of Fernando de Noronha. The purposes of this work were the isolation of microsatellite loci for the species in question and to genetically characterize Brazilian populations, as a starting point in a study that contributes for the comprehension of the colonization process occurred in the country. Thereafter, two partially enriched genomic libraries were obtained, in which the generated fragments were posteriorly sequenced and analyzed for the presence of microsatellite sequences; being the cloning efficacy of 15.74%. Thirty-two microsatellite loci were selected for the analysis, of which eleven proved to be polymorphic. Content of polymorphic information for these loci varied between 0.079 and 0.453. Fragments of expected size were amplified in the eleven polymorphic loci in other six species from the same family as the Cattle Egret. Six populations from different latitudes in the country were genotyped in seven polymorphic loci. A low variability was found, with mean values of expected heterozigosity in the populations varying between 0.408 and 0.562. The population holding the higher diversity was the northern one, closest to the point of the first historic record of the species in the country. Low genetic structuring by AMOVA was detected, and some values of pairwise Fst and Rst proved to be significant when the pair contained populations from South and North of the country. Effective size (Ne) of the Brazilian population was 6.6 individuals (95% CL: 5.7-7.7). Diversity indices and population parameters analyzed did not show evidence that the dispersion of individuals occurred in a north-south axis, occurring more in an opportunistic and erratic manner. Fernando de Noronha s population, which have been managed by a population control program since 2007, presented diversity levels and population parameters comparable to the mainland populations, what indicates that the species will not be easily eliminated from this area.
Crianças invisíveis da Reserva Indígena Icatu/SP
(Universidade Federal de São Carlos, 2011-08-22)
Mantovanelli, Thais
;
Cohn, Clarice
;
https://lattes.cnpq.br/1714080901123094
;
https://lattes.cnpq.br/5107026474104676
O ensino-aprendizagem de inglês na escola pública paulista: o papel da gramática em proposta pedagógica para o 6º ano
(Universidade Federal de São Carlos, 2011-08-22)
Martinez, Fernanda Cristina Terruggi
;
Augusto-Navarro, Eliane Hercules
;
https://lattes.cnpq.br/5716027350340906
The main purpose of this study is to discuss the controversial grammar teaching role in a student s textbook and in the teacher s guide that follows it, as well as in its methodological orientations. This analysis is carried out taking into consideration the possibility of adapting some of the proposed activities based on grammar as a skill teaching theories. The textbook under analysis is part of a book series which has been developed by the state of Sao Paulo for its sixth year students of public schools. First, we present a discussion about Language Teaching Approach, as well as about Method and Technique according to Anthony (1963), Richards and Rodgers (2002) and Almeida Filho (2003). We also discuss the role of grammar teaching in some of the main foreign language teaching periods, such as Grammar- Translation, Audiolingualism and Communicative Approach. These discussions are aimed at providing a broad understanding of grammar teaching roles so that contemporary grammar teaching theories, such as the grammar as a skill teaching theories by Batstone (1994) and by Larsen-Freeman (2003), could help us illustrated alternative ways of teaching the structures presented in the textbook in question. It seems that these contemporary theories have contributed to the development of activities that may help preteen students take notice of grammar structures through extensive meaningful practice and reflection opportunities. We believe these illustrations may also help students become more autonomous in their learning.
Gênero, autoria e estilo em textos de 6º ano do ensino fundamental
(Universidade Federal de São Carlos, 2011-08-22)
Barbarini, Marcia de Lucca
;
Martins, Maria Sílvia Cintra
;
https://lattes.cnpq.br/9241992645160356
;
https://lattes.cnpq.br/4266142081482343
Compare the values predicted by three equations referenced in the literature with the values obtained by our sample of healthy volunteers in the six minute walk test (6MWT), and establish a new reference equation for 6MWT for the Brazilian population. 89 volunteers were evaluated (43 women) 37.8 ± 15.9 years old by spirometry, assessment of physical activity level by the International Physical Activity Questionnaire (IPAQ) and performed two 6MWT with rest intervals of 30 minutes between tests. For comparison the greatest distance achieved during the 6MWT (WD-6MWT) to the equations provided we used the Friedman test with post hoc Dunn and the correlation of variables with the WD-6MWT Spearman's test and the predictive model was performed multiple linear regression analysis by stepwise method. European equation significantly overestimated (p <0.001) WD-6MWT, Brazilian and American underestimated showed no significant difference. The WD-6MWT correlated significantly with gender (r = 0.46), age (r =- 0.59), height (r = 0.57) and length of the lower limb (LL-C) (r = 0.59). The reference equation was developed WD-6MWT=401.185 - (2.402 x age years) + (43.247 x gender 1 = male, female = 0) + (1.757 x height cm). Therefore, in view of the results obtained, it was possible to predict a new reference equation for Brazilian individuals, which explained 60% of the total variability in 6MWT, and will certainly contribute to improve the interpretation of the exercise capacity of patients with functional disability.
Do discurso sobre natureza à natureza do discurso: o caso do parlamento das águas
(Universidade Federal de São Carlos, 2011-08-22)
Espinoza, Rodrigo de Freitas
;
Martins, Rodrigo Constante
;
https://lattes.cnpq.br/6617183095074852
;
https://lattes.cnpq.br/2385823078490472
This dissertation addresses some of the ways which the environmental issue relates to certain standards of economic rationality and the construction of scientific-technical discourse. Its central objective is to discuss a form of sociological interpretation about the social hierarchies produced in the Basin Committees, emphasizing the fundamentals of these discourses and discursive modalities under construction and / or consolidated in this decentralized space of environmental governance. The empirical study is the region of the Basin Committee Tietê- Jacaré, located in the central region of São Paulo. It is the 13th State Committee who, like others, is structured by a tripartite management, State, Municipal and Civil Society. Each segment has 12 representatives who compose the Committee on equal and shall be established in a deliberative power over the management of Basin waters. The works used for analytical investigation are: Boaventura de Souza Santos and Enrique Leff in relation to the discussion of the concepts of economic rationality and scientific episteme and also the work of Pierre Bourdieu and Michel Foucault to conduct a research about social distinction on the water management.
Monitoramento e modelagem de um sistema filtro - vala - trincheira de infiltração em escala real
(Universidade Federal de São Carlos, 2011-08-23)
Lucas, Alessandro Hirata
;
Barbassa, Ademir Paceli
;
https://lattes.cnpq.br/2979012440240781
;
https://lattes.cnpq.br/6906085323922359
Infiltration systems aim to reduce the effects of urbanization, waterproofing and runoff, acting at the origin of the runoff. The objective of this project was to monitor a Filter - Swale Trench (FVT) system, built at UFSCar s campus in real scale by retaining the runoff produced by waterproofed areas. The FVT system was built in soil described as sandy loam, with infiltration capacity between 2,30x10-5 and 6,05x10-6 meters/second, and was obtained by doing testes in field using double ring infiltrometer and inverted well, respectively. The FVT system was monitored by measuring the precipitation, the inflow system, the level of water stored, and by verifying that the system functioned during the rainfalls. Sixty rainfalls were monitored, with up to a 48 year return period, with no extravasations. We observed differences between the design and operation of the system, such as the catchment area, the infiltration area and losses in the channel distribution. This shows that the structure is larger than actual scenario. We compared the fine content of the gravel and sand filter and the geotextile s permeability of the infiltration trench, sampled after construction and after about a year of system operation. After the period of operation, the gravel and sand filter showed an average reduction in fine content of 29% and 52%, respectively. The geotextile showed partial clogging, which reduced its permeability by an average of 45%. The system has been modeled using the PULS method and SWMM model. The PULS modeling method allowed us to determine the water storage level satisfactorily. Graphically, the storage level curves are similar, with average values of the Nahs - Sutcliffe coefficient (NS) of 0,43, a mean maximum storage level error of 29% and mean empting time absolute error of 36%, obtained in the validation model. The SWMM model enabled the microbasin simulation to run a Departmento de Medicina bulding and the FVT system performed unsatisfactorily and demonstrated some limitations. The model validation presented absolute mean errors of peak runoff at 58%, accumulated inflow volume of 35%, mean error of the maximum storage level of 72%, mean error of emptying time of 79%, mean NS values of inflow of 0,02 and mean NS values of storage level of - 0,79. Using the SWMM model resulted in lower levels of storage and smaller emptying times than those using the PULS model. The system maintenance summed up in cleaning the land, removing sediments from the measurement channel, and performing gardening services. The system maintenance cost in the first year of operation was R$ 85,00 / month or R$ 0,67 for each square foot of impervious drained area, considered high compared to maintenance costs of conventional drainage systems.
Análise econômica do sistema de produção ILP-integração lavoura pecuária em uma unidade de pesquisa avançada da EMBRAPA do Mato Grosso
(Universidade Federal de São Carlos, 2011-08-23)
Prado, Wander Bosco Souza do
;
Souza Filho, Hildo Meirelles de
;
https://lattes.cnpq.br/9818569122970874
The purpose of the study was to evaluate the economic viability of Crop-Livestock Integration System (SILP) in a experimental unit of EMBRAPA, stade of Mato Grosso, Brazil. The research was held on 100 hectare farm area under commercial conditions of production. This production system can be considered as an alternative for tradictional land use. It is able to increase agricultural production and avoide exploitation of new agricultural areas in environmental sensitive areas. A case study exploratory research was conducted. The approach to the problem was quantitative and qualitative, by the use of statistical tools for data collection and processing, and the analysis of variables. It was collected economic and financial data in real conditions using spreadsheet software. This information was presented by means of cash flow, which allowed to produce economic indicators and analysis, since the implementation of the project until the marketing of the products for a period of 5 (five) years farming, providing relevant analysis and interpretation of indicators based on analysis of cash flow, such as NPV. An economic analisys of the SILP is provided, showing its advantages and disadvantages for farmers and giving more information for analysis and decision making related to its adoption. It was shown that SILP is economically advantageous when compared with the monoculture of soybean. Even though SILP is a technology still under development, it proved to be advantageous because positive economic returns, and especially because it provides diversification of productive activities, generating greater stability at less risk.