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A trajetória da Democracia Socialista : da fundação ao PT
(Universidade Federal de São Carlos, 2007-03-06)
Angelo, Vitor Amorim de
;
Villa, Marco Antonio
;
https://lattes.cnpq.br/4045059477271704
The dissertation analyzes the Socialist Democracy s (DS) trajectory between 1979, year of its foundation, and 1987, when the resolution about the Brazilian Workers Party s (PT) internal trends was approved. The DS was created on the strength of the unification of regional groups that acted in the student movement along with old left militants and since its beginning it contributed to the creation of the PT. During this period, the Socialist Democracy was one of the organizations that grew the most inside the party, holding managerial positions in its board, enjoying good relationships with its management and having most of its proposals incorporated by the PT. The hypothesis of this work is that this growth was a result of the performance marked by critiscism of the party and its leadership, and also because of the support to its management and respect of their own decisions, in an intermediate position that differentiated the Socialist Democracy of other PT s left organizations, especially that of the trotskists.
A gestão das creches municipais de São Carlos na visão das diretoras: da assistência à educação (1999-2004)
(Universidade Federal de São Carlos, 2007-03-06)
Reis, Maria das Graças Fernandes de Amorim dos
;
Abramowicz, Anete
;
https://lattes.cnpq.br/5724281770530388
This research refers to the management of early childhood education, representing a diagnosis of the early childhood education institutions in São Carlos, named Creches (Day Care Centers). This study is important because it intends to contribute to the discussion of some questions about children s education in Creches (Day Care Centers); moreover, due to the lack of exploitation of this theme. The research was focused on the configuration and specificities of early childhood education management in the Creches (Day Care Centers) once it was transferred from Social and Assisting Promotion Department to the Educational Department, defined by LDB Law number 9394/96. The study main target was to put in doubt the elements brought by the management to the discussion of the work in the Creches (Day Care Centers). The paper was organized in several parts, in order to cover methodological issues; early childhood education national policies and how they interact with the actions promoted by the city-hall; a description of the city Creches (Day Care Centers), mentioning some statistic data, organization and operation, professionals who work in the Creches (Day Care Centers) and the city actions to implement the early childhood education in the Creches (Day Care Centers) during the last four years (2001-2004); nowadays perspectives in school management, emphasizing the participative management and an analysis of the school administration/management under a foucaultian perspective, posing the area as a field of knowledge/power; the presentation and analysis of the data collected through interviews with São Carlos Creches (Day Care Centers) principals. To make this study possible, it was necessary to combine bibliographical research about the early childhood education matters, the school administration/management and the adopted references; the documents research meant to characterize the updated childhood education public policies, based on the laws, the plans and some others, like documents which read contents and prescriptions about the early childhood education; and the data collecting through 14 interviews testimonies with principals of the city Creches (Day Care Centers) in São Carlos. The results of these interviews were a great amount of data, from which we selected some speeches, the most important parts to help characterize the management, the discussion and the analysis suggested. In the closing, as final considerations, we reassured many points discussed throughout the paper, viewing the necessity to proceed a reflection about the possible precocious school process of young children, as long as the proposal of other studies about the management of the institutions that assist children from 0 to 3 years old.
Para um estudo da questão do socialismo no Brasil: os primórdios em Santos através da publicação de A Questão Social
(Universidade Federal de São Carlos, 2007-03-06)
Turci, Alex Neriz
;
Vianna, Marly de Almeida Gomes
This study has as main goal analyze the publication A questão Social by the Socialist Center of Santos in the end of the 19th century. I search to understand how the socialists ideas emerged in Europe were established in the country and their reflexes over the left-wing press in this study, the periodical of the Socialist Center of Santos. The present work tries to show why not to consider the revolutionary acts as the most adequate, searching for a reformist way of action. The fact of Marxism has seduced intellectuals from middle classes, from which the leaders of the Center of Santos came from; pointing out that Silvério Fontes was a strong mischaracterizing element in this organization before the labor man. The biggest part of the work parties and organizations defining themselves as socialists in Brazil during the last decade of the 19th century fought for reformist measures in favor of workmen such as reduction of working hours and prohibition of child labor. Thus it can be stated that the Brazilian Socialism was coherent with the dominant chain of the International Second which prayed for a socialist society from a perspective which would be the result of a historical evolution without any kind of violent means to achieve this occurrence, concentrating its main efforts on short and middle term political actions, that is, in achieving electing victories and in the program that should lead its actions if they ever got the power through party arena. And their publications are an important historical source to understand this reception of ideas.
Aplicação conjunta do custeio baseado em atividades com o valor econômico agregado (EVA) em uma cooperativa agropecuária avícola de corte.
(Universidade Federal de São Carlos, 2007-03-07)
Souza Filho, Men de Sá Moreira de
;
Batalha, Mario Otávio
;
https://lattes.cnpq.br/1015001063418091
;
https://lattes.cnpq.br/4768901375579199
The present work aims a joint application of Activity Based Costing (ABC) with Economic Value Added (EVA) in a poultry agropecuary cooperative. Firstly, it was defined the following for the development of the model of Activity Based Costing (ABC) as part of cooperative productive chain: poultry slaughterhouse, feed industry, incubatoty and broiler parents farm. Secondly, it was evaluated the economic value creation at the cooperative through the Economic Value Added (EVA) indicator. Finally, joint application of Activity Based Costing (ABC) with Economic Value Added (EVA) was performed for costing objects of feed industry and poultry slaughterhouse cooperatives products. As result of the research, it was identified the following: cooperative products costing in terms of activities, evaluation of the value creation in the cooperative and cooperative products costing was possible based in activities, evaluation of value creation in the cooperative and which products create or destroy economic value in this organization. The model of Activity Based Costing (ABC) was applied for costing of cost objects in the operational units of the cooperative. The results showed evidencing in the case of the poultry slaughterhouse unit the presence of products with negative margin and rentability. Regards to the application of EVA it was verified that the cooperative presented a creation of economic value in the three last years of the carried through evaluation, however with one raised level of dependence of external capital for operations development. The joint application of Activity Based Costing (ABC) with Economic Value Added (EVA) revealed viable with regard to its use in the structure of the poultry slaughterhouse and feed industry by means of the use drivers of capital cost. This application assists in the evaluation and adequacy of products mix of the cooperative for direction the value creation.
Abordagens alimentares em uma comunidade pesqueira de Cananéia, Litoral Sul de São Paulo: conhecimento tradicional, gênero, segurança alimentar e sustentabilidade
(Universidade Federal de São Carlos, 2007-03-07)
Ferreira, Marina Vianna
;
Nordi, Nivaldo
;
https://lattes.cnpq.br/8168865557947289
;
https://lattes.cnpq.br/9020309796452848
A batalha pela memória : os militares e o golpe de 1964
(Universidade Federal de São Carlos, 2007-03-07)
Atassio, Aline Prado
;
Villa, Marco Antonio
;
https://lattes.cnpq.br/7695077592581355
Influência da ordem-desordem estrutural na fotoluminescência do CaTiO3:Sm
(Universidade Federal de São Carlos, 2007-03-08)
Figueiredo, Alberthmeiry Teixeira de
;
Longo, Elson
;
https://lattes.cnpq.br/9848311210578810
;
https://lattes.cnpq.br/7026388762536003
Some properties of the materials, such as ferroelectric and optic, are dependents to structural organization of the material. Thus, to know the order disorder degree at short, intermediate and long range is important to elucidate or predict properties in materials. The PL emission at room temperature will be used to study the structural order disorder at short, intermediate and long range in the CaTiO3:Sm, in function of annealed temperature. Using studies of the structural order disorder in the CaTiO3:Sm system will propose a model that appoint to favorable conditions, in disordered material, to show PL emission at room temperature.
Seleção de ligas com alta tendência de formação de estrutura amorfa
(Universidade Federal de São Carlos, 2007-03-08)
Aliaga, Luis César Rodriguez
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Kiminami, Claudio Shyinti
;
https://lattes.cnpq.br/5443002033733395
;
https://lattes.cnpq.br/7148278938710201
The understanding of the law that explain why certain alloys form amorphous structure by cooling the molten melt under cooling rates lower than others alloys remains as one of the great challenges of the materials science and engineering. There is not only scientific but also technological importance in determining the best compositions that can form such metastable structures with larger simplicity. In an effort for elucidating part of this mystery diverse models and criteria are promising: i) of topological instability, "λ criterion", and ii) the thermodynamic approach, "γ* criterion". The application of this last one in binary systems showed excellent prediction of the amorphous former compositions. Although, experimental results through the years have proven that multi-component systems, especially ternary ones, are more suitable to form bulk samples with amorphous structure. The goal of this thesis is to search compositions with high glass forming ability, by means of the application of models and criterions focusing on systems based on chemical elements of relative low cost. An extension of the γ* criterion , for ternary systems, was developed and valided for Cu-Zr-Al alloys. That extension of the γ* criterion was, combined with the λ-criterion , applied to select new alloy compositions with high glass forming ability in Ni-Ti and Ni-Nb-B systems. The combined use of both criterions was quite powerful tool in the selection of alloys with the higher GFA.
Segurança em instalações elétricas provisórias em canteiros de obras
(Universidade Federal de São Carlos, 2007-03-09)
Mantelli, Fernando Eduardo Alonso
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Serra, Sheyla Mara Baptista
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https://lattes.cnpq.br/8528385567782505
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https://lattes.cnpq.br/5061094631681697
Temporary electric installations occur in small, average and great construction-sites and many times for being of temporary nature are unsafe and precariously executed. The electricity, source of potential danger even in low tension, is responsible on significant part of the occupational accidents, directly by means of electrical shocks and burnings due the voltaic arcs or indirectly by means of injuries caused for machines, equipment and components, requiring therefore, special attention in order to prevent accidents. Through case study it is considered to verify the safety condition in a construction-site temporary electric installations in the NR 18 - Conditions and Environment of Work in Construction Industry regulations.
Expressão recombinante da canacistatina em células de inseto
(Universidade Federal de São Carlos, 2007-03-09)
Silva, Mylene de Melo
;
Silva, Flávio Henrique da
;
https://lattes.cnpq.br/1757309852446263
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https://lattes.cnpq.br/9301036866854470
Due to the great economic importance of sugarcane crop in Brazil, the occurrence of infections by phytopathogens leading to decreased productivity and quality remains a serious problem. As the plants have natural mechanisms of defense against the attack of fungi and insects, amongst which the inhibitors of proteases are distinguished, the use of these substances in the development of resistant plants or in pesticide production may be an interesting alternative. One of the major classes of protease inhibitors acting against the attack of pathogens is the cystatins, proteins that inhibit cysteine proteases specifically. Canecystatin was the first cysteine protease inhibitor characterized from sugarcane. This gene codes for a ~ 14 kDa protein that contains conserved regions common to the cystatin family. Although the protein has previously been produced in a bacterial system of expression, in this work we use this sugarcane cystatin as a model for the implementation of a heterologous protein expression system in insect cells. This system has some advantages relatively to the prokaryotic system such as the possibility of posttranslational modifications. The recombinant protein was expressed in this system in a soluble form and purified using affinity chromatography in a nickel column, rendering approximately 23 mg/L of pure protein. The activity of the protein was assayed against papain, being capable of inhibiting the activity of this cysteine protease efficiently. Furthermore, the stability of the protein was analyzed in different conditions of pH and temperature. We conclude that the canecystatin is a good model for the implementation of the Baculovirus Expression System at the Molecular Biology Laboratory of the UFSCar
Estrutura genética populacional de Brycon hilarii (Characidae) da sub-bacia do Rio Miranda, e seu significado para programas de conservação
(Universidade Federal de São Carlos, 2007-03-09)
Sanches, Alexandra
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Galetti Júnior, Pedro Manoel
;
https://lattes.cnpq.br/7398754661670478
;
https://lattes.cnpq.br/4999886032379825
Brycon hilarii (subfamily Bryconinae, Characidae), popularly known as piraputanga, is a migratory fish species distributed throughout the entire Paraguay River basin and largely appreciated for its meat quality as well as for fishing, besides being the main species of touristic value in the Bonito region (MS, Brazil). Considering the lack of information on the population genetic structure of these fish, the objective of the present study was to analyze, through the use of microsatellite markers, the distribution of the genetic variability in Brycon hilarii collected in different localities of the Miranda River sub-basin (Paraguay basin) in the Bonito region (MS). For such an end, at first a total of seven polymorphic microsatellite loci capable of producing a considerable genetic variation was prospected (among di-, tri- and tetranucleotides), with their also being efficient in the heterologous amplification for five other species of the genus. In the populational analysis of B. hilarii, the different samples presented very similar genetic diversity levels. Through the FST values, gene and genotype differentiation tests and Bayesian analysis, it was possible to verify (1) the existence of at least two genetic populations of Brycon hularii coexisting in the sampled range, despite being a potentially mobile species; and (2) that only the fish from a reproductive stock were genetically differentiated from the other samples, representing a putative population unit. It is possible that in the reproductive season the more genetically homogeneous individuals organize themselves into a population genetic unit or a reproductive stock, aiming the maintenance of their genetic integrity. These results on the genetic structure of B. hilarii constitute tools of extreme importance considering they can aid the understanding of the behavior and biology of these fish, contributing to fish management and species conservation programs.
Assimilação de carbono e fluorescência da clorofila do cafeeiro (Coffea arabica L.) sob condições contrastantes de irradiância, temperatura e disponibilidade de CO2
(Universidade Federal de São Carlos, 2007-03-09)
Ronquim, Júlio Cesar
;
Prado, Carlos Henrique Britto de Assis
;
https://lattes.cnpq.br/7561749470600567
;
https://lattes.cnpq.br/4326794061371522
Leaf gas exchange and potential photochemical efficiency of photosystem II of Coffea arabica L. cultivars Catuaí Vermelho, Icatu Amarelo and Obatã were evaluated under field conditions on clear and cloudy days in the wet season. Additionally, were compared seasonal photosynthetic responses in wet and dry periods of year to irradiance, temperature and water stress of C. arabica cv. Obatã non-grafted or grafted on to C. canephora Pierre. Finally, in laboratory conditions were evaluated CO2 assimilation and electron flow through photosystems II and I, in young plants of C. arabica cvs. Catuaí Vermelho, Obatã and Ouro Verde exposed to different thermal treatments during 14 h, under regular and saturated carbon concentration. The results provided evidence that in clear day occur the midday depression of leaf gas exchange and potential photochemical efficiency of photosystem II, due to the greater atmospheric vapor pressure deficit, causing a strong decrease (about 70%) in daily carbon gain. On a cloudy day, the daily carbon gain was barely limited by irradiance below light saturation point. During dry period, the grafted plants showed accentuated higher net photosynthesis when compared with the non-grafted plants, what demonstrated lower susceptibility to water stress and the favorable effects of grafting on yearly carbon gain. The results suggest that maintaining greater stomatal conductance and transpiration rates during dry period is more important for carbon balance than the efficient use of water. The optimal temperature for maximum net photosynthesis measured at 355 ppm CO2 was from 17-23 °C. The difference in optimal temperature range of maximum net photosynthesis when compared to maximum electron transport rate through photosystem II (26-29 °C) showing an imbalance between photochemistry and biochemistry phases of photosynthesis, resulting in electron excess. Elevated CO2 concentration did not affect the response of net carbon assimilation to temperature, despite the variation in optimal range between 23-29 °C for Catuaí Vermelho. At temperature of above 29 °C were measured the higher mesophyll limitations to photosynthesis, which was greater than stomatal limitations. Photosynthetic process of C. arabica is strongly inhibited at leaf temperature about 32 °C.
Implicações da organização da produção e do trabalho na atividade dos montadores de montagem estrutural
(Universidade Federal de São Carlos, 2007-03-09)
Secchin, Vanessa Maria de Souza
;
Menegon, Nilton Luiz
;
https://lattes.cnpq.br/5461487552981919
The Ergonomic Analysis of Work (AET), based on the Analysis of the Activity, was used to understand (a) what is exactly an assembler of structural assembly and (b) how those professionals articulate regulation mechanisms in order to guarantee their health as well as productivity. The first inquiry is answered by the Integrator Model of the Work Activity, evidencing the craft character of the work of the assemblers of structural assembly. The second inquiry, searched through the Regulation Model, shows that the assemblers add to the activity through operative means the determinant resultant from the quality patterns and the product reliability, of the production temporary goals, of the available resources and its internal state, with prominence to the anticipation and postponement mechanisms. The complexity revealed by the analysis and the comparison of the perspective of the activity with other current rationalities produces new understandings concerning the activity of the assembler of structural assembly. The tensions lie on the activity levels, of the mechanism of coordination and of the way as the results of the production are valued enabling this way that organizational procedures and technical mechanism are created to contribute to reduce the work load and to increase operational switching and the assembler posture at his work spot.
Relações entre preferências térmicas humanas no interior de edificações e as temperaturas externas: um estudo sobre o método adotado na norma AHSRAE 55-2004
(Universidade Federal de São Carlos, 2007-03-09)
Gomes, Adriana Dias
;
Roriz, Maurício
;
https://lattes.cnpq.br/6355579765506588
Thermal comfort is specifically related to thermal behavior in response to both indoor and outdoor air temperature. Human thermal acceptability to climate changes and its effects depend on several aspects. It relies not only on local climatic conditions, but also on personal traits which can interfere seriously with thermal preferences as well as with someone s mental and physical performance. The combination of these factors determines the human thermal acceptability and the satisfaction degree in relation to a specific environment. The more those conditions vary, the higher the percentage of dissatisfied people with an environment is, due to personal requirements of each person. Thus, meeting those expectations of thermal comfort, considering people s needs and limitations, has been an important subject of studies in this field highlighting its importance when planning, designing, and constructing a building. Therefore, human thermal preferences and thermal sensations to hot and cold environments are essential information to various activity sectors because comfort and human performances depend directly on environmental thermal conditions. Since architecture, mainly buildings, is intended for humans, it can be said that it should satisfy its occupants, regarding local climate conditions. In order to have this, it s necessary to determine the comfort temperatures in which people develop better their work activities, optimizing their mental, physical, and intellectual well being. This research consists of a theoretical analytical study of the international large database, compiled by ASHRAE (1997), combining climate conditions with human thermal preferences and sensations. The methodology used by Richard De Dear (1997) in the RP-884 ASHRAE s project was the probit procedure using SAS software, release 8 (SAS Institute, Cary, NC, USA, 1999) to the optimum temperatures obtained, and linear regression to the acceptable comfort limits of the population studied. The comfort limits obtained demonstrate the ratio between occupants comfort temperature and the outdoor temperature, featuring fluctuations of 80% to 90% of thermal acceptability in well-ventilated buildings. The aim of this study is to interpret the method adopted by Richard De Dear (1997) and apply it to the data resulting from the large ASHRAE (2004) Database to understand how the comfort temperatures (optimum temperatures) and the thermal acceptability were obtained for a group of people under predetermined indoor thermal conditions in well- ventilated buildings. The Probit analysis indicates the optimum temperature is 25ºC approximated, exactly 0,5 probability responses, that is, 50% interviewees. In the face the obtained results, it s succeeded the Probit analysis applicability has a great efficacy method to binary variable probability study and determination, which points out two interesting situations to research
Esponjas (Porifera, Demospongiae) indicadoras ambientais na APA Meandros do Rio Araguaia, Brasil
(Universidade Federal de São Carlos, 2007-03-09)
Batista, Twiggy Cristina Alves
;
Melão, Maria da Graça Gama
;
https://lattes.cnpq.br/8342306603661310
;
https://lattes.cnpq.br/7913740523066322
A first survey for freshwater sponges was carried out at the protected Amazonian area of Meandros do Rio Araguaia , at the Brazilian states of Tocantins, Mato Grosso and Goiás. The survey aimed to sample the largest number of different freshwater habitats from this Amazonian clear waters area. It was carried out at different GPS registered sampling stations, during high and low water periods. Water and sediments were also sampled at the same time aiming to relate sponge occurrences with the measured habitat parameters. For that purpose, Canonical Correspondence Analysis (CCA) and Non-metric Multidimensional Scaling (MDS) analysis were carried out over 12 habitat variables. The taxonomic analysis yielded the detection of the occurrence in this area of 21 freshwater sponge species, with the description of Heteromeyenia cristalina n. sp and the revision of the genus Heteromeyenia Potts, 1881, for South America. Heteromeyenia cristalina, Trochospongilla gregaria, T. paulula, T. minuta, T. lanzamirandai, T. delicata, T. variabilis, T. pennsylvanica, Radiospongilla amazonensis, Saturnospongilla carvalhoi, Acalle recurvata and Drulia browni indicated the seasonally flooded ponds and forest, Spongilla spoliata, Trochospongilla repens, Oncosclera navicella, O. spinifera and Drulia ctenosclera, indicated the rocky bottoms dwellers, Corvospongilla seckti and Oncosclera navicella were common to both habitats. Dissolved oxygen concentration, pH, and organic matter were the variables which indicated species higher richness at the different habitats. The high water variables appeared as the most important ones, since they favor sponges distribution and production in this area.
A Faculdade de Medicina de Ribeirão Preto - USP (1948 - 1975)
(Universidade Federal de São Carlos, 2007-03-12)
Araújo, Marcelo José
;
Nosella, Paolo
;
https://lattes.cnpq.br/7159165045266256
;
https://lattes.cnpq.br/2567470400482142
This work carries through a historical survey of the creation process, installation and development of the Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP) in the period from 1948 the 1975. Part of its ampler historical context until the its more specific approach, that is, to its constituent characteristics, elements and, over all, to its social meaning. The text initiates approaching the historical antecedents of the medicine in Brazil in the end of century XIX and the beginning of the XX, giving has detached to the controls of the endemic diseases and its protagonists, the creation of the Faculdade de Medicina de São Paulo and the necessity of installation of a College of Medicine in the interior of the state of São Paulo. After that, it approaches the circumstances of the creation, installation and of the developing of the FMRP, detaching the didactic structure of the course, the faculty, the student body, the employees, the first university entrance examination, your discipline them and the departments, the developed research, the Hospital of the Clinics etc. These circumstances meet inserted in the First Part of the work. In the Second Part, in turn, are characterized and analyzed some considered problems important to help to better understand the relation between the FMRP and the society that produced it and it molded it. Beginning all this historical survey, the Theoretical Reference whose estimated beddings and had given support to the research; after all, as well as a teacher conducts an orchestra searching harmony between its integrant ones, the theoretical reference served as guide maker for the success of the set.
Avaliação da velocidade de cisalhamento média em biorreator convencional tipo tanque agitado e aerado
(Universidade Federal de São Carlos, 2007-03-12)
Campesi, Alexandre
;
Badino Júnior, Alberto Colli
;
https://lattes.cnpq.br/1087619912727132
In biochemical processes, shear rate ( γ&) in the system is an important variable on design and operation of bioreactors. Shear can result in damage to the cells and the microorganisms, taking to the viability loss and even to the cellular breaking and the microbial death. In the present work was proposed a methodology to quantify average shear rate ( av γ & ) in stirred bioreactor with a 4 L working volume, through volumetric oxygen transfer coefficient (kLa), varying the operating conditions, as the impeller rotational speed (N: 600, 700, 800, 900 and 1000 rpm) and the specific air flow rate (Φar: 0.50 and 1.00 vvm). Five different glycerol solutions and distilled water were utilized as Newtonian fluids and six different xantham gum solutions were utilized as non-Newtonian fluids. Dynamic viscosity (µ) of the glycerol solutions and rheological parameters (K, n) for the xantham gum solutions, were determined at 28ºC from rheograms using a digital concentric-cylinders rheometer. Based on the obtained results, a correlation for average shear rate ( av γ & ) as function of the impeller rotational speed (N), rheological parameters (K, n) and volumetric oxygen transfer coefficient (kLa) was proposed. The correlation obtained for the average shear rate ( av γ & ) showed appropriate to estimate av γ & , because the estimated values approximated of others values described in literature for another correlations. In a second stage, four cultivations of Streptomyces clavuligerus ATCC 27064 was realized in a stirred bioreactor, aerated 0.50 vvm and agitated in 700, 800, 900 and 1000 rpm. Process variable values, as consistency index (K), flow index (n), cellular concentration (Cx), glicerol concentration (CGlic) and 2 CO n& produced ag of the cultivations were evaluated. It was observed that the consistency index (K), flow index (n) and cellular concentration (Cx) varied due to shear conditions imposed to the cultivations. Finally, based on experimental literature results, average shear rate ( av γ & ) was determined in function of the time for cultivation of S. clavuligerus in stirred bioreactor for 600, 800 and 1000 rpm and specific air flow rate (Φar) of 0.50 vvm, using the proposed methodology, the obtained values were more consistent, because the experimental values of kLa were obtained by gaseous balance.
Influência do alimentador de sólidos na fluidodinâmica do transporte pneumático
(Universidade Federal de São Carlos, 2007-03-13)
Lopes, Cibele Souza
;
Freire, José Teixeira
;
https://lattes.cnpq.br/2270677706718167
;
https://lattes.cnpq.br/3627302739758354
Pneumatic transport is an operation where powdery and granular materials are conveyed through a pipeline suspended in a gas flow. It is usually found in several industries segments and it is used as a carrier, such as, in beans production; drying operation, like grain dryers; or as reactors, in cracking catalytic reactions, combustion operations and precalciner. One of most important parts in a pneumatic conveying is the feeding system since in this area takes place an abrupt change of momentum due the introduction of solids and this influences the fluid dynamic of the system. The purpose of this wok was to carry out a study of influence of three feeders (gravity feeder, gravity feed concerted with a reduction of area and gravity feed concerted with a venturi) in the fluid dynamic of the system, identifying the main aspects of the feeders and their effects in the global system. The influence of dp and the throat diameter in the venturi feeder was evaluate. Experimental data showed that the fluid dynamic and feeding device was linked, and the shape and size of the feeder and the particle size dictated the possible operation conditions for the transport. Finally, was observed that in the literature, many authors don t consider the feeding system in their studies about pneumatic conveying. However, the results showed that special attention should be given to the feeders, since it can generate high pressure losses which increase the systems costs or even make it impracticable.
Detecção do limiar de lactato salivar e da variabilidade da freqüência cardíaca em exercício resistido: comparação entre métodos
(Universidade Federal de São Carlos, 2007-03-14)
Oliveira, João Carlos de
;
Perez, Sergio Eduardo de Andrade
;
https://lattes.cnpq.br/9408953831211309
;
https://lattes.cnpq.br/7208666542619125
Important researches had shown the benefits of resistance training programs for rehabilitation as well as prophylaxis of physical incapacity. However few studies had investigated the responses of the intermediate metabolism during the execution of resistance exercises if carried through steady state or during incremental tests. The purpose of this study was to investigate the viability of the use of non-invasive methods as trustworthy indicators in the analysis of the aerobic-anaerobic transition and to compare the physiological responses between male and female, submitted to discontinuous incremental test of resistance exercise for lower limb. Eighteen subjects volunteered to participate and provided a written consent (9 males, 24 ± 3 years, 176 ± 5 cm, 72 ± 10 kg and 9 females, 23 ± 2 years, 165 ± 6 cm, 59 ± 10 Kg) in two sessions, distinct days, of counterweighted isoinertial Leg Press 45º machine (LP), being the 1st session performed to identify the 1 repetition maximum load (1RM) and the 2nd to accomplish the discontinuous incremental test of the type step in LP (DIT). The loading gradual scheme was determined in relation to the percentage of 1RM (%1RM). Subjects were required to perform 20 ± 2 repetitions with a 2 minutes interval between each set when loads were changed and collection of blood and salivary samples were collected. The blood lactate concentration ([La-]) had been used as gold standard for the respective comparisons between the methods. As non-invasive methods the salivary lactate concentrations ([SL]) and index SD1 of the heart rate variability (HRV) were used, gotten by Poincaré Plotting (PP). The thresholds identified by [La-] and [SL] (LT and SLT, respectively) had been determined by Mader and Heck Method (1986). The threshold identified by index SD1 (SD1T) was determined by Tullpo et al. (1998) criterion. The criterion level for statistical significance was set at an alpha level of p< 0,05. Statistical differences had not been found in the comparisons between genders in each step of the DIT for the three variables studied. The thresholds when expressed in kg revealed significant differences between genders but not intra genders. When expressed in %1RM the thresholds had been placed in the average enter 29-40% and had not evidenced significant differences between the thresholds in the conditions intra genders and between genders. Correlations of 0.89 and 0.78 had been evidenced between the LT and SLT and SD1T, respectively. The variability of both non-invasive variables was shown inside of the limits of agreement evidenced by the analyses of Bland-Altman. Thus it is possible to conclude that as much the SL as index SD1 of HRV responses of similar form to the blood lactate. This allows the detention of the thresholds of lactate salivary and heart rate variability, independently of the gender. In this way, as much the SL as index SD1 of the HRV presents great potential as possible non invasive markers of effort intensity, that they can be used in the lapsing and the control of the load of work in the resistance exercises. Moreover, the differences in the metabolic responses between the genders, evidenced in the intensities of effort above of the threshold, must be considered in the lapsing of the resistance training.
Construção e caracterização cinética e fisiológica de um sistema células Sf9/ baculovírus recombinante para a produção de Canacistatina
(Universidade Federal de São Carlos, 2007-03-14)
Arantes, Mabel Karina
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Suazo, Cláudio Alberto Torres
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https://lattes.cnpq.br/9591447226240450
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https://lattes.cnpq.br/4495308167335518
The development of the biotechnology has permitted to achieve, among other biotechnological products, many recombinant proteins which are largely used as vaccines, hormones, enzymes and other ways of human therapeutic activity. This is possible because the multidisciplinary: through the technology of the recombinant DNA the region that encode gene of interest is cloned in a system of adequate expression for super-expression of the correspondent protein and, through the technology of bioprocess is possible to increase the obtaining scale of the recombinant product assuring its reproducibility, integrity and functionality. Involving these two areas of knowledge, this works intends to express an heterolog protein, the Canacistatina, deriving from sugar cane, through an eucariotic expression system Sf9/baculovirus. This implies in the construction of a recombining baculovirus, containing the cDNA which codifies to the Canacistatina, and also the characterization of the cultivation of Sf9 cells, and of the process of infection by baculovirus, in kinetics and physiologic therms. In order to obtain these purposes it was done experiments of cultivation of Sf9 cells in Schott bottles of 100 mL, with work volume of 20 mL, in 27° C. In these experiments it was analyzed the optimum conditions of velocity agitation, inoculum s density, culture environment, and also the role of substrates. In relation to these parameters, it was observed that a better cell growth can be conduced in a 100 rpm of agitation, in an inoculum s density of 1x106 cell/ml, using a combination of 1:1 between the mediums SF900 II and TNM-FH (Medium 50%), without the necessity of addition of Bovine Fetal Sorum. This last aspect represents a great advantage in relation to the bioprocesses, in a way that it uses Sf9 cells already known. It was construed the recombining baculovírus containing the Canacistatina s gene through the modified genome of the baculovirus Autographa californica Multiple Nuclear Polihedrosis Virus and the infection experiments of Sf9 cells was made under three MOI values (1, 5 e 10 pfu/cell) in the two culture mediums. The betters results indicates to infection of Sf9 cells in 50% Medium using MOI= 5 pfu/cell, conditions that the Canacistatina s productivity reached 28 µg/106cel.