Browsing by Issue Date, starting with "2014-11-25"

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Avaliação da vinhaça de cana-de-açúcar para produção de hidrogênio em reator anaeróbio de leito fluidizado em condição mesofílica: efeito de co-substrato, TDH, e concentração
(Universidade Federal de São Carlos, 2014-11-25)
Reis, Cristiane Marques dos
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Silva, Edson Luiz
;
https://lattes.cnpq.br/4438080540876126
study evaluated the production of hydrogen and methane from sugarcane vinasse in anaerobic fluidized bed reactor. Two fluidized bed reactors filled with expanded clay were operated under two different concentrations: R5 (5 gCOD.L-1) and R10 (10 g.CODL-1). During the first stage, glucose was used as the primary carbon source. Along the first step vinasse was added from 0% to 100% of the organic source under HRT of 6 h. In a second step with 100% of sugarcane vinasse, HRT was reduced to 4, 2 and 1 h. In another reactor R15 (15 gCOD.L-1) it was varied the substrate (100% glucose; 50 % glucose/ 50 % vinasse; 100 % vinasse) under HRT of 8 h. All reactors were operated in room temperature and a sludge from the treatment of swine wastewater was used. It was not observed methane production in R15. Hydrogen production rate and hydrogen yield reached, respectively: 0,01 L.h-1.L-1 e 0,10 mmolH2.g-1COD added. In reactors R5 and R10, biogas was formed by H2 and CO2 when glucose was present in the feed. Methane was formed when vinasse became the main substrate. The best operating condition occurred under HRT of 1 h, vinasse 100% at a concentration of 5 gCOD. L-1 with a hydrogen production rate of 0.57 L.h.-1L-1. As regards the yield, the best condition was under HRT of 6 h when the affluent comprised vinasse and glucose (3:1) reaching an yield of 3.07 mmolH2.g-1CODadded. Methane production in acidic conditions showed that the methanogens have adapted to a slightly acidic pH of 4.5. The principal metabolites were ethanol, butyric acid, propionic acid and methanol. Microbial characterization revealed the presence of Prevotella and Megasphaera belonging to the domain Bacteria and Methanobacterium and Methanosphaera belonging to the Archaea domain.
Estudo da cominuição na solubilidade da rocha fosfática Bayóvar
(Universidade Federal de São Carlos, 2014-11-25)
Plotegher, Fábio
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Oliveira, Cauê Ribeiro de
;
https://lattes.cnpq.br/5321313558714462
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https://lattes.cnpq.br/5490465071052251
Phosphorus is a vital element for both animals and plants. In recent decades, the population growth boosted the production of food and technologies applied to the crops. The intense use of land for monoculture depletes the soil nutrients rapidly, requiring its replacement with fertilizer. Among the main macronutrients, phosphorus is the least required by plants. However, it is the one that most limits productivity in Brazilian soils, mainly because iron and aluminum ions in the soil immobilize this nutrient. The use of phosphate rocks in crops has been studied in recent years as an attempt to control the release of phosphorus in the soil. The present research aimed at studying the kinetics of phosphate release. Analysis were carried out on samples of milled phosphate rock and synthetic samples of two apatites. The results were compared to the kinetic analysis of a high solubility phosphate fertilizer widely used in the fields. The study was divided in three stages: the physical-chemical characterization of the simple superphosphate fertilizer; the physical-chemical characterization of the phosphate rock; and the characterization of apatite s synthetic phases. The results confirmed that the phosphate fertilizer has a phase already quite soluble in water. Through the calculated kinetic parameters it was observed that with a short milling time it was possible to increase the nutrient release. This study served mainly to determine the conditions of the test and also to confirm that the mechanical activation is one way to increase the solubility of less soluble materials. The results of the Bayóvar rock characterization showed that its major mineral phase is apatite which has a low solubility in water. Solubility tests in citric acid showed increased solubility of the material when increasing the milling time, with top system performance (mill/jar and alumina balls) in 20 minutes. As what happened to the fertilizer, the mechanical activation played a significant role to increase the material solubility, even with the material being little soluble. The mineralogical phase of phosphate is also crucial to the success of the release. To check if the mineralogical phase in fact influences the release kinetics, the isolated phases of two apatites were studied. Hydroxyapatite and fluorapatite samples were synthesized via coprecipitation and the particles were grown by hydrothermal treatment, varying time and temperature. The characterizations showed success in the synthesis of samples via co-precipitation. The results of XRD, SEM and BET also showed that temperature was more influential on the crystal growth than on the changes in its morphology. xii Solubility tests, also with citric acid, showed that indeed the mineralogical phase of phosphate is important and will be decisive in the choice of possible rock or natural phosphates to be used for direct soil fertilization.
Metodologia iterativa e modelos integradores para desenvolvimento de jogos sérios de treinamento e avaliação de desempenho humano
(Universidade Federal de São Carlos, 2014-11-25)
Rocha, Rafaela Vilela da
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Araujo, Regina Borges de
;
https://lattes.cnpq.br/8964123297688432
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https://lattes.cnpq.br/1845113331963646
Training aims to improve the professional competences (knowledge, skills and attitudes) and it is essential particularly in risk activities to the life, property and environment. Due to the risk and cost of traditional practical training, serious games, which reproduce systems, processes and real-world objects in a safe virtual environment has been used as an effective tool for learning and training or motivation to learning, and support for assessment during and post-action. On the other hand, the development of serious games is a complex process, has development high cost (time, money, resources), need highly qualified professionals, who hold requirements of learning, assessment, simulation and game itself. Different methodologies have emerged for developing serious games, however, in general, they do not include the different dimensions and need to be combined and balanced with other methodologies to achieve the training and assessment objectives. This thesis presents a novel iterative methodology (named DevJSTA) for the development of serious games for training and human performance assessment (named JSTA), which integrates multidisciplinary teams by providing guidelines, artifacts, game elements and simulation models (formalisms of discrete events, automata and Fuzzy logic) to integrate and include concepts such as effective and experiential learning in serious games, besides providing feedback during the simulation and at the end. This methodology DevJSTA describes the professional roles, the development life cycle, the generated products and the technologies and tools that can be used to create these products, as well as a support architecture and generic components. The main differential of this methodology is its holistic approach that integrates pedagogical principles of learning and assessment in the development of simulation. The methodology was evaluated through interviews with software engineering experts, serious games developers and domain experts. The results were positive and confirmed the need of these new methodology that is integrative. To validate the methodology, one JSTA was created to train firefighters to control the cooking gas leak, and to evaluate the trainee’s perception and performance. Serious game fidelity and effectiveness were also validated. Moreover, the serious game development, with the use of the methodology DevJSTA, allowed to evaluate an opportunity for improvement in the current protocol that is used in the Fire Department.
Inventário do ciclo de vida do filme BOPP produzido no Brasil
(Universidade Federal de São Carlos, 2014-11-26)
Cunha, Renata Nobre da
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Moris, Virgínia Aparecida da Silva
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https://lattes.cnpq.br/1101036108950133
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https://lattes.cnpq.br/2551330588763978
The growing awareness of the importance of environmental protection and the possible impacts caused by production processes boost to research methods to better understand and reduce these problems. Assessment Life Cycle Assessment (LCA) is a widely used technique that seeks to assess the environmental aspects and minimize potential impacts in the life cycle of products or processes. A detailed description of the environmental aspects of the product is called Life Cycle Inventory (LCI), which organizes the input data and output of product or process, considering the raw materials, water and energy consumption, air emissions, liquid effluents, solid waste, among others. Thus, this work presents the ICV flexible polypropylene film (BOPP) produced in Brazil by a company located in the region of Sorocaba, to provide subsidies for the production of BOPP film that contribute to the construction of the LCA database representative of the Brazilian reality. To do this, it used the scope of the "cradle-to-gate", which considers environmental aspects from the extraction of raw materials to the factory gate. They were considered as subsystems of the representative model of the production of BOPP system of petroleum extraction; petroleum refining - production of naphtha; production of propylene; production of PP resin; production of BOPP film; and maritime transport (imported petroleum) and road (PP resin). For the preparation of the inventory, using primary and secondary data, collected in the company producer of BOPP and bibliographical research, respectively. From the inventory analysis, were identified and discussed the most representative environmental aspects (water consumption, energy source and emissions of CO, CO2, particulate matter, SOx, NOx and CxHy) each subsystem inventory of the production of BOPP film under study. The greatest contribution of subsystems for the consumption of water and energy were the production of the resin PP and the production of BOPP film. In all subsystems CO2 emissions was representative, being the propylene production subsystem what else issued, presenting also representing contributions in CO, SOx, NOx and CxHy.
Complexos de metais de transição: aplicações no tratamento e diagnóstico da doença de Alzheimer
(Universidade Federal de São Carlos, 2014-11-26)
Lima, Márcia Valéria Silva
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Carlos, Rose Maria
;
https://lattes.cnpq.br/1589143355309943
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https://lattes.cnpq.br/7144772516000295
Currently there are about 35.6 million people diagnosed with Alzheimer's disease (AD) in the world, and it is expected that this number will double by 2050. Causes of Alzheimer's disease are not yet known, but their symptoms are characterized the decline of cognitive function result of overactivity of the enzyme acetylcholinesterase (AChE); and accumulation of β-amyloid peptide (β-A) in the brain of patients. Therefore it is important to the development of drugs that act on the two problems of AD; cognitive decline (inhibition of AChE activity) and the identification of fibrillar aggregates of β-A (creation of new probes). For this purpose have been prepared and tested a series of luminescent complex; cis-[Ru(phen)2(4- ImAC)]PF6, cis-[Ru(phen)2(4-ImAAc)]PF6, cis-[Ru(phen)2(2-Apy)](PF6)2, where phen = 1,10-phenanthroline, ImAA = 4-imidazole acetic acid, ImAC = 4-imidazole carboxylic acid and Apy = 2-aminopyridine. The ruthenium complexes were synthesized, where its structural elucidation and purity were checked by NMR H1 spectroscopy and by microanalysis. The compounds are soluble in aqueous solutions and exhibit an intense and broad absorption and emission in the visible region. The complexes have relatively long life with 1 the order of 100 ns. The complexes showed moderate inhibition against the enzyme AChE, with an IC50 of about 10-20 μmol.L-1. From the images from confocal microscopy was possible to make the location of the complex inside the cells by luminescent emission, where the imidazole compounds were located specifically in the cytoplasmic portion of the cell, unlike the complex with aminopyridine, which was distributed homogeneously throughout cellular portion. It was possible to identify the formation of fibers from measurements of emission of the luminescent complex, since these complexes have intensity of luminescence variable with different types of Aβ aggregation. The fibrils were also confirmed by fluorescence microscopy emission lifetime. From the results of the complexes exhibit high pharmacological potential to the treatment of AD since they can be used in diagnosis (identification of the fibrils) and in the treatment of AD (AChE inhibition).
Efeito do (NaLix)CO3, COM 0 ≤ x ≤ 2, na sinterização e condutividade elétrica do Ce0,8Gd0,2O1,9
(Universidade Federal de São Carlos, 2014-11-26)
Grzebielucka, Edson Cezar
;
Souza, Dulcina Maria Pinatti Ferreira de
;
https://lattes.cnpq.br/4100119317525940
;
https://lattes.cnpq.br/7165358114698930
The principles of operation of Solid Oxide Fuel Cells (SOFC) and Molten Carbonate Fuel Cells (MCFC) were merged to create a hybrid device, which can combine the advantages and reduce the disadvantages of both cells, improving the efficiency of energy conversion in stationary power generation devices. Ceria solid electrolytes are among the most promising oxide ion conductors for intermediate temperature SOFC operating at 550-650 °C with high efficiency. However, their major disadvantages is related to Ce4+ to Ce3+ reduction, which occurs at high temperatures and low oxygen partial pressures. Another drawback in using ceria solid solutions is the poor sinterability which requires high temperatures (1400-1600 °C) to achieve high densification (>95 %), makes the manufacturing process costly. Besides, the MCFC exhibits issues such as lifetime due to the corrosive electrolyte formed from the lithium, potassium and sodium carbonates leading to leaks. To improve the characteristics of both cell includes reducing the operating temperature of the device and the sintering temperature of the electrolyte. In the present work, the approach was to reproduce the electrical behavior of composite sintering temperatures at 600 °C, by preparing gadolinium doped ceria (GDC) with lithium and sodium carbonate (MC) samples through oxides mixture. After the electrical behavior reproducibility and the efficiency of the processing method, the effects of sodium carbonate (CS) and MC additions on GDC sintering at higher temperatures than 900 °C were investigated. The sinterability, microstructure and electrical conductivity of pure samples of GDC with CS and MC were evaluated. Composites with 40 % by volume of MC were effective in densifying GDC allowing densification above 95 % for samples sintered at 1200 °C/1 h with total conductivity at 500 °C of 9,26x10-3 S.cm-1, similar to the GDC sintered at 1400 °C/1 h (7,57x10-3 S.cm-1), demonstrating that MC had a positive effect on the densification without compromising electrical conductivity.
A parceria público-privada como instrumento urbanístico: o caso do município de São Paulo-SP
(Universidade Federal de São Carlos, 2014-11-27)
Guilhen, Adriana Jesus
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Falcoski, Luiz Antonio Nigro
;
https://lattes.cnpq.br/3200660670856698
;
https://lattes.cnpq.br/2816240560922863
The Federal Constitution constitutes instruments that emphasize the social purpose of the land, regulated by the City Statute; compounded by municipal responsibilities that sometimes have no corresponding item in tax collection, creating budgetary constraints that hamper investments. Combined technical and administrative obsolescence of the contemporary state, the public-private partnership is an important tool for urban reform with private funding, under the cloak of a distributive character. But the obstacles are many. Despite the existence of an important legal framework, it is not, in Brazil, a tradition of the private sector to invest in social works as the housing market is restricted. The success of the partnership depends on a paradigmatic shift in public policy: it will aim at social justice or continue to succumb to real estate speculation. Based on this background, the objective of this study is to analyze the public-private partnership within the bounds of the country's urban policy, to understand this instrument forseen in the City Statute through the analysis of its legal framework and with European experiences, with the empirical object of its application through urban operations in the São Paulo municipality. Methodology: exploratory, descriptive and explanatory; to deepen the theoretical and empirical knowledge about the situation of the problem and the analysis that was done with legislation and bibliography, constituting the major source of evidence. Results: During the analysis of the Brazilian urban reform, state administrative and technical obsolescence and limitations of public resources were observed, occupying a prominent position in public-private partnership in urban reform, and how it could be analyzed together with the European experience of social innovation, especially in the São Paulo municipality. Despite the social, economic, environmental and political appeals present in the partnership, the literature highlights contradictions and obstacles for its consolidation as an alternative to urban development based on social inclusion as well as to pay attention to the diversion of its purpose, as the practice has prioritized real estate capital. It is pertinent to note the importance of the private sector s participation in urban development, because despite the state mandate, due to its technical, administrative and financial constraints, the government has encountered obstacles in complying with this proposition. Conclusion: In this context, one of the challenges is to provide measurement tools to provide information for the evaluation of urban development in order to define the applicability of the public-private partnership, which may materially have an impact, directly or indirectly, negatively or positively, if used as an instrument of government or state policy. The legal framework deserves only a few adjustments to make the partnership attractive to the private sector and at the same time encourage fairness; however, it has not been enough to make the partnership viable given the complexity and contradictions of capitalist urbanization. Accordingly, it is hoped that the government and the private sector will be compelled to seek adequate ways of carrying out a public-private partnership, with management focused on the areas of social justice.
Propriedades microestruturais e magnéticas de policristais de V2O5, CoV2O6 e Co3O4 sintetizadas por método Pechini
(Universidade Federal de São Carlos, 2014-11-27)
Dreifus, Driele Von
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Oliveira, Adilson Jesus Aparecido de
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https://lattes.cnpq.br/4640148190073166
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https://lattes.cnpq.br/1847280941369286
In this work we performed an extensive research about the magnetic properties of three materials, vanadium pentoxide (V2O5), cobalt tetraoxide (Co3O4) and cobalt vanadate II (CoV2O6). All the three oxides were synthesized by a sol-gel technique named Pechini method. These oxides present remarkable distinct characteristics. The first one, V2O5, although being reported as a diamagnetic material in literature, presented a paramagnetic behavior accompanied by an antiferromagnetic transition at 80K. This behavior has its origin in structural defects in the sample such as oxygen vacancies. The presence of these structural defects in the sample was confirmed by photoluminescence measurements as a function of the temperature which showed a characteristic indirect band gap emission and another emission at lower energy, characteristic of oxygen vacancies. The second oxide, Co3O4, presented the usual antiferromagnetic transition at about 32K, and an additional peak characterized as a metastable transition at a lower temperature. This behavior was observed in the AC susceptibility measurements that the position of this peak exhibits a variation as the drive frequency is changed. This metastable transition might has it origin in the presence of particles with different sizes in the sample. This can provide changes to grains surface condition giving rise to canted moments which can contribute to frustrations in the system, in addition to generating an increase in the magnetization for temperatures below this transition. The third oxide studied in this work is CoV2O6. This material has very peculiar magnetic properties like plateaus in its magnetization curve which are induced by the applied magnetic field. At temperatures below 7K, the system changes from an anisotropic antiferromagnetic state to a ferrimagnetic state, with a saturation tendency with the magnetic field increase. The interactions between the quasi one-dimensional chains of cobalt in this, that comprises the material, lead to frustrations in the system structure that allow the emergence of various transitions. We also observed in this system a transition at about 2,8K, with low intensity when compared to that one at 7K. This transition has an intensity dependence with AC drive frequency observed in AC susceptibility measurements as a function of temperature.
Características da cooperação da Universidade Federal de São Carlos com a Sociedade no período de 2008 a 2012
(Universidade Federal de São Carlos, 2014-11-28)
Villela, Tatiane da Cunha
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Torkomian, Ana Lúcia Vitale
;
https://lattes.cnpq.br/0647602354410303
The knowledge generated in academia is of paramount importance to technological advances and increasing competitiveness. Technology transfer university-business refers to the different forms of partnerships between these two domains. The result of this process innovation is a prerequisite for survival in competitive environments. However, despite the ever closer links between universities and firms, cooperation is "far" from being a smooth process, mainly due to structural differences between agents and goals and can create conflicting expectations and perceptions. Against this backdrop, this paper aims to present and analyze the characteristics of the profile UFSCAR cooperation with the company today, and see if there was any change in the characteristics of the UFSCAR cooperation with the company, using as an object of analysis projects established between the university and its external partners in the last five years (2008-2012), which are managed by the Foundation for Institutional Support of Scientific and Technological Development (FAI). Among the results, it is emphasized that the cooperation projects of UFSCAR with the external environment characterized, in most cases, by low ranges of duration. Regarding the type of financing, private companies, the main activities developed with the university in the study were the activities of Consultancy / Project Consultancy and Research and Development. Another important factor was that 88% of partnerships with private companies took place at the Center of Exact Sciences and Technology (CCET) and the Departments of Civil Engineering and Materials Engineering, both in number of projects and volume of resources. Furthermore, it was possible to note the growth potential of cooperative activity between the company and UFSCAR.
Multicomponent approach to silica-grafted peptide catalysts : A 3 D continuous-flow organocatalytic system with on-line monitoring of conversion and stereo-selectivity
(Universidade Federal de São Carlos, 2014-11-28)
Scatena, Gabriel dos Santos
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Cass, Quezia Bezerra
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https://lattes.cnpq.br/9197210255594409
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Paixão, Márcio Weber
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https://lattes.cnpq.br/3773908504964104
The derivatization of organocatalysts with functional appendages suitable to anchor onto solid supports is usually achieved by stepwise syntheses. As an alternative to such a strategy, this work describes a one-pot approach to silylated prolyl-peptide catalysts by a multicomponent reaction that enables the simultaneous incorporation of the catalytic and the heterogenizable (triethoxysilane) moieties. A microreactor with high catalytic efficacy and reproducibly in the conjugate addition of aldehydes to nitroolefins was obtained by grafting onto HPLC-grade silica (10 μm) and packing into a column with a selected catalyst. A 3 D continuous-flow system that includes the on-line monitoring of the reaction outcome was set up. For that, the microreactor was coupled to a chromatographic column for the separation of the remaining substrates from the Michael adduct in the second dimension, followed by a chiral polysaccharide column for the analysis of conversion and stereoselectivity. This approach represents a new instrumental setup that combines the advantages of multidimensional chromatography and flow catalysis.
Bioprospecção de microrganismos endofíticos isolados de Tabebuia spp. e Hymenaea courbaril e identificação da produção de metabólitos de interesse biotecnológico
(Universidade Federal de São Carlos, 2014-11-28)
Romano, Luis Henrique
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Badino Júnior, Alberto Colli
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https://lattes.cnpq.br/6244428434217018
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https://lattes.cnpq.br/0692713353762468
Microorganisms, such as those belonging to the groups of Penicillium, Bacillus, Paenibacillus, represent represent an important source for the production of bioactive metabolites with varied applications. The production of these substances is directly related to the culture media, as well as the available carbon and nitrogen sources, conditions of pH, temperature and agitation (gas exchange). Among the microbial groups most studied about the production of various interest metabolites are the fungi and bacteria that inhabit the interior of plants, the endophytics. Thus, the present study aimed to isolate and identify endophytics microorganisms from leaves of four species of Tabebuia spp. and Hymenaea courbaril and study the production of interest metabolites by the lineages found. The microbial activities were studied: antibiotic capability against Gram positive and Gram negative bacteria, antifungal, antibiotic resistance, enzyme production, antitumor activity and pigment production. Microorganisms that stood out due to production of antibiotics, cytotoxicity against tumor cells and pigment production. This study selected microorganisms based on their most relevant production, in this case, it was the antibiotics production, pigments production and cytotoxicity, they were cultured in larger scale aiming at the improvement of the production of metabolite chosen according to the results. The selected microorganisms were a bacterium identified as Paenibacillus terrae and a fungus identified as Penicillium minioluteum/Talaromyces minioluteus complex. The P. terrae proved producing bioactive metabolites against Staphylococcus aureus, Escherichia coli and Candida albicans, in addition to novel cytotoxic activity against HTC, and OVCAR8 SF295 tumor cells. This bacterium also showed unprecedented anti-Leishimania activity, acting against the promastigote form of the parasite. The isolated fungus proved producing a red pigment, in large quantities without cytotoxic, antifungal or antibacterial activity, favoring its industrials applications. Both selected microorganisms demonstrated potential for biotechnological and industrial applications, suggesting the viability of promising continuity of the work performed.
Síntese e caracterização de espinélios de lítio e manganês obtidos via rota hidrotermal assistida por microondas
(Universidade Federal de São Carlos, 2014-11-28)
Silva, Daiane Piva Barbosa da
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Bocchi, Nerilso
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https://lattes.cnpq.br/5930614700886481
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https://lattes.cnpq.br/1138611310617865
Lithium and manganese oxide in spinel phase (LiMn2O4) was obtained by microwave-assisted hydrothermal route starting from completely soluble reagents. For this, a mixture of potassium permanganate and lithium hydroxide monohydrate (Li/Mn = 1.2) aqueous solutions and acetone (acetone/Mn = 1.1) was treated in a microwave reactor (850 W) at 140 °C for different times (10 s - 30 min) and under constant magnetic stirring. The obtained materials were characterized by X-ray diffraction, scanning and transmission electron microscopy, X-ray dispersive energy spectroscopy, electrons diffracton, inductively coupled plasma-atomic emission spectroscopy, cyclic voltammetry, thermogravimetry, structural refinement by Rietveld method and chronopotentiometry. The X-ray diffractogramm for the material synthesized in 5 min could be indexed to the JCPDS card number 35-0782 related to the LiMn2O4 in spinel phase, but the unwanted presence of K+ ions in its structure was verified. Thus, an ionic exchange step was included in the process, in which the newly-synthesized material was treated in an aqueous solution of lithium hydroxide in the same microwave reactor for different times (5 - 40 min) and under constant magnetic stirring. After 10 min, a material with low content of K+ ions and Li/Mn ratio = 0.52 was obtained, but it was electrochemically inactive. The material was submitted to a heat treatments in a conventional microwave oven for distinct times (1 - 5 min), having presented, after 4 min, the characteristic electrochemical profile of the spinel. The images obtained by scanning and transmission electron microscopy for this material showed the predominance of prismatic particles with nearly 10 - 25 nm. The results of charge and discharge tests showed that the specific capacity values are strongly dependent of the composite film thickness that composes the electrode. Thinner films presented a value of initial specific capacity of 100 ± 17 mA h g-1 with charge retention of 93% after 75 charge and discharge cycles at C/1 discharge rate.
Representações dos grupos simétrico e alternante e aplicações às identidades polinomiais
(Universidade Federal de São Carlos, 2014-11-28)
Fonseca, Marlon Pimenta
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Schützer, Waldeck
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https://lattes.cnpq.br/8638200922501477
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https://lattes.cnpq.br/5448947376251425
In this dissertation we ll present a discussion about the Representations of the Symmetric Group Sn and Alternating Group An. We ll study basics results of the Young s Theory about the representations of the Symmetric Group and discover the decomposition of the algebra FSn in simple subalgebras. After, we ll utilize this decomposition to find the decomposition of the algebra FAn in simple subalgebras. Finally, we ll use this decompositions, together with the PI Theory, for get the sequence of A-codimensions for the Grassmann Algebra (Exterior Algebra) infinitely generated.
Avaliação dos métodos de imersão, spray e dinâmico utilizados na fabricação de filmes nanoestruturados de nanofolhas de grafeno pela técnica de automontagem.
(Universidade Federal de São Carlos, 2014-11-29)
Mello, Waldomiro Luiz Rios de
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Riul Júnior, Antonio
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https://lattes.cnpq.br/0751163307734256
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https://lattes.cnpq.br/9758791735720365
;
Ferreira, Marystela
In this work we have compared the way graphene oxide nanoplatelets are nanostructured in bilayers of poly(diallyldimethylammonium chloride) (PDDA) and reduced graphene oxide stabilized in poly(sodium 4-styrenesulfonate) (GPSS), called as (PDDA-GPSS)n, with n representing the number of deposited bilayers. LbL (layer-by-layer) films were fabricated by the self-assembly technique throughout the dipping, spray and dynamic methodologies, available at Laboratory FINEP1, UFSCar, campus Sorocaba. When compared with other bottom-up strategies employed in the build-up of nanostructured ultrathin films, the LbL technique is simple, cheap and easy to handle, beside the incorporation of distinct materials in the film structure, not limited to the form and size of substrates. The times used for the polyelectrolytes in the dipping and dynamic methods were based on the kinetic growth of the (PDDA-GPSS)8 films. In the spray methodology the time used was based initially in the literature and further confirmed by experimental data considering pressure and spray time. All nanostructures formed were characterized by UV-vis spectroscopy, atomic force microscopy, scanning electron microscopy, profilometry and impedance spectroscopy. In all cases it was observed a linear growth of the LbL structures, pointing that the same amount of material was adsorbed at each deposition step. Films obtained from the dynamic methodology indicated higher amount of material adsorbed in the nanostructures, and by an adequate control of the parameters used in the self-assembly methods by physical adsorption one can make a fine tuning regarding to the spontaneous aggregation of the nanoplatelets at solid interfaces.
Estratégias espectroanalíticas para análise química inorgânica de plantas medicinais
(Universidade Federal de São Carlos, 2014-12-01)
Virgilio, Alex
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Nóbrega, Joaquim de Araújo
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https://lattes.cnpq.br/8833989058164529
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https://lattes.cnpq.br/5249134846307879
This thesis describes the development of analytical procedures based on direct solid analysis by high-resolution continuum source atomic absorption spectrometry in graphite furnace (SS-HR-CS GF AAS) and aqueous solutions by flame (HR-CS F AAS), tungsten coil atomic emission spectrometry (WC AES), standard dilution analysis for inductively coupled plasma optical emission spectrometry (SDA ICP OES) and inductively coupled plasma mass spectrometry with a tandem mass spectrometer (ICP-MS/MS) for inorganic chemical analysis of medicinal plants. In the first study, SS-HR-CS GF AAS was evaluated for the determination of Al, Cr, Ni and V. The development of an atomizer heating program with an additional air-assisted pyrolysis step and use of chemical modifier for Cr, makes feasible the use of calibration with aqueous standards for solid sample analysis. Limits of detection of 3, 18 and 7 ng g-1 were obtained for Cr, Ni and V, respectively. Aluminum was determined by HR-CS F AAS due to its high content in the samples, and presented a LOD of 10 μg L-1. For studies involving the determination of Al, Cr and V by WC AES, it was developed a new method for atomizer temperature monitoring, in order to perform more accurate and controllable heating programs. The use of conditioned coils, chemical modifiers for sensitivity enhancement and a pyrolysis step produced lower limits of detection (0.1 mg g-1 Al, 9 μg g-1 Cr and 13 μg g-1 V) and better precision. In another study, it was evaluated the development and application of a new calibration method called standard dilution analysis (SDA) for the determination of Al, Ca, Fe, Mg, Mn and Zn by ICP OES. SDA combines the benefits of matrix matching as in the standard additions method, and the correction of interferences similarly to internal standardization approach without any instrumental modifications. The procedure has high sample throughput and it is suitable for routine analysis. SDA was compared to different conventional calibration methods for CRMs analysis and recoveries in the 88 - 112 % range were obtained by the proposed method. Limits of detection of 2 (Al) ; 0.1 (Ca) ; 0.02 (Mg) ; 0.3 (Fe), 0.1 (Mn) and 0.1 μg g-1 (Zn) were obtained. In the last study, it was evaluated the performance of ICPMS/ MS for As, Cd, Cr, Ni, Pb and V determination in phytotherapic drugs. By using the MS/MS configuration, oxygen in octopole reaction system (ORS) and oxide detection for As and Cr, results with good accuracy and precision were obtained. In these cases, limits of detection of 10 (As); 0.2 (Cd); 8 (Cr), 8 (Ni), 3 (Pb) and 2 ng g-1 (V) were obtained.
Liberdade sob tensão: negros e relações interpessoais na São Carlos pós-abolição
(Universidade Federal de São Carlos, 2014-12-01)
Palma, Rogério da
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Truzzi, Oswaldo Mário Serra
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https://lattes.cnpq.br/5005536921435787
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https://lattes.cnpq.br/9921508438209875
Post-abolition can be conceptualized as a historical moment in which places and social hierarchies built during centuries crumble. Master and slave, essential categories to understand slaveholding societies, don´t make sense anymore in this new social reality. By bringing the promise of freedom for the former captive, abolition established new bases for negotiation and therefore potentiate certain types of conflicts. While some tried to keep, even if under other terms, the old social asymmetries, former slaves sought to assert their new legal and social status of citizen. Through an approach of a variety of documentary sources of the period, this paper aims to demonstrate that interpersonal relationships were a set of interactions in which these political struggles by redefining certain social situations were present. Through of the interpersonal relationships, one can perceive the establishment of new forms of subjection to the black population, which saw their citizenship be precarious by the racialization of social relations characteristic of this time.
Programa Institucional de Bolsa de Iniciação à Docência: contribuições, limites e desafios para a formação docente
(Universidade Federal de São Carlos, 2014-12-01)
Deimling, Natalia Neves Macedo
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Reali, Aline Maria de Medeiros Rodrigues
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https://lattes.cnpq.br/5059722794651091
This study had as principal focus the identify and analyze of the contributions and limitations of the Programa Institucional de Bolsa de Iniciação à Docência (PIBID) of the Universidade Tecnológica Federal do Paraná (UTFPR) for the training of teaching initiation scholarship fellows and teaching professional practice of supervisors of basic education, employees and institutional, management processes educational and area coordinators program. For both, a qualitative approach research was performed with one institutional coordinator, two area coordinators in managing educational process, four area coordinators, seven supervisors, four employees and forty eight teaching initiation scholarship fellows of four subprojects PIBID UTFPR: subproject Physics, campus Curitiba, subproject English Letters, campus Pato Branco, subproject Mathematics, campus Toledo and subproject Chemistry, campus Londrina. As a tool for data collection, semi-structured interviews, documents and written narratives provided by the participants were used. For data analysis, we considered the theoretical and political affecting that directly or indirectly influence the processes of teacher training aspects; the national policy of teacher education, the legal instruments that based PIBID and the interpretation of the participants about the influences, contributions and limitations to the program for teacher education and action. The data analysis conducted from this perspective allowed us to discuss the relationship between the career choices of teaching initiation scholarship fellows and objective working conditions and career they see and experience in schools in which they are inserted through the Program; the influences - positive and negative - of the activities and actions developed in schools and at the university in the subprojects analyzed - in training and professional practice of teaching involved; the relationship between the university, the partner schools and the state schools and the role and return each of these spheres in the development activities PIBID; and resources and material conditions that are offered to the program to achieve their goals and for the training and teaching professional practice of its participants. Each of these aspects was analyzed separately in four major categories of analysis, from which we discuss broadly and at the same time, particularly the contributions, limitations and challenges of the program for the training and professional practice of its participants. From the results obtained, we believe that the development of policies and programs that aim to facilitate and mediate the contact of students with professional practice of teaching in the period of initial training, as well as the closely relationship between the university and the school, as is the PIBID case, it is essential for both the processes of teaching and practice professional as to the quality of this process. However, thinking about education policy and, more specifically, a politics teacher training involves dealing with the same seriousness, both the processes of initial and ongoing training as the actual working conditions, salary and teaching career - both basic education as higher education - in the search for quality education in real terms and not just formal terms.
Avaliação de uma biblioteca universitária na perspectiva dos usuários: o caso da Biblioteca da Unesp Câmpus de Rio Claro
(Universidade Federal de São Carlos, 2014-12-02)
Silva, Josimeire Moura da
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Furnival, Ariadne Chloe Mary
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https://lattes.cnpq.br/1291482506649810
This monograph pertains to the area of Librarianship known as “Studies of Users and Uses”, an area which focuses in studying and evaluating the uses and users of all kinds of libraries and information and services centers. In this manner, the study reported here had as its main goal to map the perception that the users of a university library have of its services. More specifically it aimed to identify the library users’ profile; to determine the knowledge and concepts the user has in relation to these products and services and to map the general view that they have of the library as a whole. The methodological instruments adopted were bibliographical research; documental research and the use of an electronic data collection instrument sent by e-mail to the whole academic community to identify frequency, type of reading, service evaluation, library collection, space/ physical structure evaluation and product/ services evaluation. After collecting data, the information went through a process of tabulation and simple statistical analysis to better interpret and present these results. It can be said that the proposal was realistic and all the objectives were achieved, and that this work ended up being a tool of approximation between users and the library, and collecting answers regarding their perception about the mentioned topics. This project aimed to identify in the results of this study the needs and priorities for possible improvements to the products and services of the library, that is, it hoped to inform the professional practice, turning it into a more evidence-based practice.
Estudo sobre o uso do dispositivo leito de acolhimento noturno em Centro de Atenção Psicossocial Álcool e Drogas CAPS AD
(Universidade Federal de São Carlos, 2014-12-02)
Moura, Aline Silva de
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Fioroni, Luciana Nogueira
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https://lattes.cnpq.br/8086810053892035
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https://lattes.cnpq.br/1802598771589178
This research aimed at investigating the device called " overnight-stay " in moment of crisis the user of alcohol and other drugs , in the context of a Psychosocial Care Center Alcohol and Drugs 24 ( CAPS ad III ) , in Campinas SP . It was intended to characterize the users who occupied overnight-stay according to demographic data, data on the use of psychoactive substances, data relating to the commencement CAPSad III as well as characterize the bed occupancy rates and indications of the team for their use. This is a descriptive cross-sectional study (April / 2012 to March / 2013), using research roadmap and documentary record data from four sources: medical records, insertion records in overnight-stay, books and bank shift changes data team. As a complementary source of information we used interview with service managers. Data were organized and analyzed from a computerized database using the Excel program. The research pointed out that the bed night shelter was occupied by 167 users 315 times, most males (77,25%), single (46,11%), aged between 31 and 40 (36,53%), incomplete elementary education (40,12%), unemployed (51,50%) and living with a family member (50,30%) . The demand for treatment was mainly due to the use of multiple drugs (53, 89%), especially if alcohol linked to another substance, followed by the exclusive use of alcohol (39,52%). Most cases (81,43%) had a comorbidity, particularly psychiatric (51,23 %). The length of enrollment in CAPSadII patients for 6 months (36,53%) and equipment for emergency care were the services most have referred users (30,43%). Among the indications for insertion into overnight-stay, include the promotion of abstinence (34, 85%), psychiatric stabilization (21,08%) and the need for protected environment (20,64%). Changes in mental examination were significant (66, 67%), especially mood changes (29, 97%) and insomnia (22, 67%). Significant portions of users were on the streets (34,13%) which requires other joints and need of supporting this vulnerable population. The logic of overnight-stay occupancy rates and indications of the team for their use were characterized. The overnightstay in CAPSad III , is seen as an opportunity to expand attention to the crisis the user of alcohol and other drugs in the anti-asylum logic , as they allow the regulation and care of the team. His newly deployment within the network of care to the user of alcohol and other drugs brings relevance to this investigation given the fact that it can contribute to a better understanding and characterization as well as for actiong planning.
A estética da cultura popular na folia de momo do Recife: questões de alteridade, corporeidade e transgressão
(Universidade Federal de São Carlos, 2014-12-02)
Pajeú, Hélio Márcio
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Miotello, Valdemir
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https://lattes.cnpq.br/9131819326282708
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https://lattes.cnpq.br/1483750169047328
The perspective of this work was to understand the culture as an opening way to alterity in the process of identity construction of a socially organized group, reflecting from the philosophy of Mikhail Bakhtin and the Circle as this sphere, in general, acts as a point against the formation of words and dialogues. The attention turned to the festivities and popular demonstrations that insert in Pernambuco's popular culture, specifically in the carnivalesque cycle, the attempt to delineate a scope of relations and permanent vehicles and reflected in everyday life that build a (dis)order in the aesthetic of popular culture of Recife s carnival. Thereby, the overall objective of this work is to reflect how images of grotesque realism incarnate in bodies and form this ambivalent aesthetics through which citizens can experience their freedoms and build accountable acts inside and outside of the official days of Momo s revelry It was point of interest of this research the ways in which such manifestations to embody a grotesque corporeality in their practices break social hierarchies to put in interaction and discourse game the various classes that take part in them, sketching out a popular culture that is based on human interactions infringement and in the establishment of responsible acts of loveliness. As a starting point for understanding it was highlighted the frevo, rhythm transformed over the years into an ideological symbol of Pernambuco s identity, to understand it in relation to other events such as Boi de Carnaval, Maracatu, Urso de Carnaval and the Galo da Madrugada. The methodological line that leads the strength of this work was due to the experience of the party from an ethnographic point of view, in order to single out all its phenomena in the existence of life, to understand it among a dialogical readback process of texts in various materialities, organized in secondary speech genres that function as the meeting place of ethics and aesthetics. We conclude that the carnivalesque popular culture cycle has in its grotesque aesthetic the attribute that allows revelers to experience their freedoms on feast days, taking the street and turning it into transgressions stage. The participation and inclusion in the popular universe was essential to conclude that the understanding of culture in the life through the materialized word in texts can only become productive if done in an exotopic perspective, however, participative perspective; otherwise it loses all the wealth and dynamism of responsible acts of man interacting with their fellowmen, turning them into abstraction.