Browsing by Issue Date, starting with "2005-10-27"

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Treino em esteira com suporte parcial de peso associado à estimulação elétrica funcional melhora a marcha de hemiparéticos crônicos e efeitos da inclinação da esteira na marcha de sujeitos hemiparéticos
(Universidade Federal de São Carlos, 2005-10-27)
Lindquist, Ana Raquel Rodrigues
;
Mattioli, Rosana
;
https://lattes.cnpq.br/5694498670428619
;
Salvini, Tânia de Fátima
The purpose of this study was to evaluate the effect of the combined use of functional electrical stimulation (FES) and treadmill training with body weight support (BWS) in walking functions and voluntary limb control in chronic hemiparetic patients. Eight hemiparetic individuals (mean age, 56.6 ± 10.26 years) were evaluated in the present clinical trial. The stroke interval was 17.3 ± 10.9 months. The stroke etiology of the subjects was ischemia (75%) or haemorrhage (25%) in the middle cerebral artery region. An A1-B-A2 single-case study design was applied. Phases A1 and A2: three weeks of gait training on a treadmill with body weight support, and phase B: three weeks of treadmill training plus FES. FES was applied to the peroneal nerve to improve ankle dorsiflexion during the swing phase and heel strike on the initial floor contact. Stroke Rehabilitation Assessment of Movement (STREAM, 0-60) was used to assess motor recovery. Kinematical analysis was used to assess cycle length (m); cycle duration (s); gait velocity (m/s); stance duration (s); swing duration (s) and cadence (steps/min). The results showed substantial improvement in the motor functions during phase B (from 54.9% to 71.0%). The space-temporal variables of cycle duration, stance and cycle cadence as well as cycle symmetry presented improvements when compared to treadmill training with BWS but without FES (p<0.01). The combined use of FES and treadmill training with BWS promoted an improvement in the motor recovery and gait pattern of hemiparetic subjects and could be used during gait rehabilitation. The purpose of this study was to investigate the effects of uphill treadmill inclination in the gait of ambulatory subjects with hemiparesis. Fourteen individuals (mean age 64.3±14.56 years) were evaluated in the present trial. The stroke etiology of the subjects was supratentorial ischemia (12 cases) or haemorrhage (2 cases). Gait analysis was performed during each experimental condition (floor walking and uphill treadmill walking of 0, 2, 4, 6 and 8%). The space-temporal variables, gait line, cyclogram, force graphs and vertical ground reaction forces during initial contact, midstance and toe-off, and muscular activity were recorded by Infotronic Ultraflex System. Muscular activity recordings were obtained for the following muscles on the subjects paretic side: tibialis anterior, medial belly of gastrocnemius, biceps femoris, vastus lateralis, vastus medialis, gluteus medius and erector spinae. Heart rate was also monitored during each experimental condition. The results showed that uphill treadmill improved the heart rate from 82.6±11.0 bpm to 97.7±20.2 bpm as the treadmill inclination improved to 8%. Spacetemporal variables were not significantly affected by the uphill walking while velocity remained steady. EMG amplitude of gastrocnemius decreased while vastus lateralis and biceps femoris increased with slope. We conclude that treadmill inclination would have some beneficial effect on the subjects general fitness and could be used during stroke rehabilitation when the patient motor condition does not allow the increase of gait velocity. However, gait ability in stroke patients changes within certain limits during uphill treadmill.
Alternativas de sistemas construtivos para condomínios residenciais horizontais - estudo de caso
(Universidade Federal de São Carlos, 2005-10-27)
Villar, Francelene Hermida Rezende
;
Furlan Júnior, Sydney
;
https://lattes.cnpq.br/1588911302230944
Improvement in productivity is one important factor to tackle the increasing Brazilian housing deficit. Besides, civil construction industry holds strategic position in the development of the country due to its economical and social importance. In this scenery, the use of industrialized constructive systems has been more and more frequent, mainly by large construction companies and in buildings that need speed of execution. The main purpose of the current work is to show, from the perspective of important parameters to the construction of horizontal properties jointly owned (rationalization, quality, cost and performance, among others), a comparative analysis of Jet Casa constructive system (a system comprised of prefabricated panels, consisted of ceramic stones and armed concrete pillars) with constructive system in structural masonry with ceramic stones, traditionally used in such enterprises. This study is developed through a case study carried out for the construction of Jardins de Barcelona Joint Owned Property, in São José do Rio Preto, by Rodobens Negócios Imobiliários, consisted of 198 one-story double houses. Initially, some concepts related to the conception of horizontal properties jointly owned, as far as rationalization, quality and productivity are concerned, are briefly argued with theoretical base aim. Then, some constructive systems which are currently being used in Brazil for building residential units in a series are described and their main characteristics (project, materials, components and execution) are presented. This way, the current overview of this sector is provided. After this, Jet Casa constructive system is described in details: project, production, assembly and other characteristics (productivity, standardization of procedures, building site organization, costs, performance and rationalization). Briefly, structural masonry constructive process is also shown, in order to give the case study some foundation. Finally, from the perspective of important parameters to construction of horizontal properties jointly owned (rationalization, quality, cost and performance, among others), these two constructive processes are compared in order to be used in the enterprise in question. From this comparative analysis, the choice made by the company (still predominantly cost-oriented) and the parameters that influenced this decision are shown.
Aspectos da interação do homem com pesticidas no ambiente: focando a cotonicultura e com ênfase às bordas do Alto Pantanal, Mato Grosso, Brasil
(Universidade Federal de São Carlos, 2005-10-27)
Rieder, Arno
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Mozeto, Antonio Aparecido
;
https://lattes.cnpq.br/6594211224864538
;
https://lattes.cnpq.br/3628842228961777
The interaction man-pesticide-environment (M-P-E), in cotton areas was characterized and, a laboratorial study on mobility of the pesticide parathion methyl (PM) into soil columns was developed. Antropic impacts and risk indicators of environmental contamination by pesticides and risks to human health were identified (RCDPEH). This study was carried on in two cotton communities (Facão - C1 and Barra Nova - C2), municipality of Cáceres, at the High Pantanal borders, Mato Grosso state (MT), Brazil, during six harvest periods (1992-97). For the characterization of the MP- E interaction, data were collected with support of the service of assistance to the cotton farmers of MT, as well as through perceptions in situ. Assays on mobilization of pesticide residues were carried on in laboratory using columns filled with top soil from three topographical positions (Pi=1,2,3) with three depths (Ei=1,2,3) collected in cotton farms (Gossypium hirsutum L.) of two communities (Ci=1,2). PM was applied at the top of soil columns and leaching was induced in three time intervals (ti=0,1,2). The percolate was collected to analyze PM residues, using gas chromatography with termoionic detector N/P (CG 500) and an integrator processor (CG 300). Results showed that the characteristics related to the M-P-E factors and their interactions can also consist in risk indicators (RCDPEH). These indicators expressed in terms of greater (r1) and lesser risk (r2) showed that the two communities were similar in the factor pesticide (P: r1 = 40,5 %), but distinct in the factors man (M: C1, r1 = 48,2 % > C2, r1 = 33,2 %), environment (E: C1, r1 = 49.1 % < C2, r1 = 59,0 %) and in the interactions of these three factors (M-P-E: C1, r1 = 45,6 % < C2, r1 = 53,9 %). The communities (C1, r1 = 44,57 % < C2, r1 = 47,2 %) as well as the six considered harvest periods (1995 harvest, r1 = 34,7 % < 1992-94 and 1996-97 harvest periods, r1: ranging from 37,6 % to 41,5 %) behaved differently in relation to the factors as a whole and to their interactions. The laboratory assays indicated that PM residues can leach in soils columns, but small amounts reached depths higher than 3 cm. Soil with higher organic matter (OM) content showed reduced leaching of PM residues. Different amounts of residues of PM mobilized through soils columns, as a function of factors Ci, Pi, Ei and ti, can be due to soil characteristics affected by OM. Therefore, well managed soils, even if sandy, but with adequate OM contents, present low risk of groundwater contamination with PM residues, except if the water table depth is low. The variations in the risk indicators (RCDPEH) resulted from the dynamics of the M-P-E interaction. Therefore, the risks are likely to being minimized through the adequate technical training of the people who work with pesticides. In this context governmental, non-governmental structures and the specialized technologies can reach the agriculturist through training, assistance, monitoring and inspection of the practical routine; thus protecting the Pantanal ecosystems.
Análise da punção e flechas em lajes maciças sem vigas de concreto armado de acordo com as prescrições da NBR 6118:2003
(Universidade Federal de São Carlos, 2005-10-28)
Ferreira, Antônio Mário
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Figueiredo Filho, Jasson Rodrigues de
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https://lattes.cnpq.br/0732866094426766
This work shows some NBR 6118:2003 prescriptions, intending to study, analyze and discuss the aspects regarding to the determination of the efforts to check the punch and the detailed framework to struggle it and the deflection (arrow), in the systems of flat plates since they had suffered significant changes. It will be done a comparative analysis of consideration of the non physical linearity presented by structural calculation program CYPECAD to that one done according to NBR 6118:2003, using a grill analogy through the GPLAN program to do that, as it will be also solved some examples to determine the strain and the framework structure to the punch as to deflection in the flat plates. At last, it will be done a study of case of a building in solid flat plates that presents deflection problems, as well as project failures in the dimension of the flat to punch, which subjects deserve a high attention and concern under the vision and sight of NBR 6118:2003. Specifically it will be dealt the following subjects: General features of the system; Methods to determine the strain and dimension to the punch; Verification of the deflection of the flat; Utilization of the programs to determine the strain and deflection; Performance and some examples and a study of the case.
Unifran: história, desenvolvimento e novos desafios.
(Universidade Federal de São Carlos, 2005-10-28)
Buffa, Maurício
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Nosella, Paolo
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https://lattes.cnpq.br/7159165045266256
Since the republic proclamation, and in a more intense way, since 1930, the public-private opposition has been dominating the Brazilian educational scenery, varying the actors and the main papers according to the times that these disputes happen. This opposition, in spite of the specific particularities of every historical moment and of the private interests that permeate the conflict, has been harming the formatting of a more united and appropriate politics for the social, cultural and economical transformations that transcend the society. In the higher education specific case, it is added to this fact the imposition, starting from the 1968 reform, of an specific formation model that should converge for the indissociability among teaching and researche, through academical structures that embraced the universality field. Inside this context, the increase of the demand for vacancies in the higher education since the 60s, in conjunction with the government politics for the sector and the experienced economical development of the country, the number of private schools increased. This fact divided the institutions into two groups, the elite group, formed by the few public ones that could associate teaching and researche, and the mass group, constituted mainly by the private institutions, that have been concentrating on the teaching activities according to the market. Contrarily to the own reform, the last ones began small and without many resources, as isolated universities and, paradoxically, they started to assist the middle class population that couldn't reach the public universities. Contextualized in the 60s, 70s and 80s, a period where a great part of the Brazilian society saw the education as a public good, therefore non-tradable, and they defended the public and unpaid school for all, that situation consolidated a negative image of the private institutions, considered by many as a second category schools, without teaching quality and with exclusively profit interests. Since the end of the 80s, some institutions became universities and, authorized for opening of courses, they had an accentuated growth, which allowed a great investments in infrastructure and faculty, improving the teaching quality and, consequently, their image in front of the society. However, the investments in structure were not followed by a strategic planning that, according to the competition, the regional subjects and the specificity of each institution, positioned them inside the new Brazilian educational market reality, reorienting their development and objectives. With all of those considerations as backdrop and inside of the History of the School Institutions research line, this work makes a case study of Unifran, University of Franca.
As manifestações da indústria cultural em instituições de educação infantil e possíveis formas de resistência: duas realidades no município de São Carlos
(Universidade Federal de São Carlos, 2005-10-28)
Morales, Cibele Serrano
;
Tagliavini, João Virgílio
This dissertation means to reflect on the childhood condition, with all its natural and historic complexity as well as on the manner by which it has been used in a manicheistic way by the society. Recognizing the strong influence of the cultural industry on this age group, it discusses the great responsibility of the school as a mediator of possible manitestations of this industry within the institution and as the responsible for an autonomous and critical formation. The institutionalized child education is seen as the competence to, through its program and with the use of an actually reflexive pratice, resist the attacks of this machine which aims the consumption and the annihilation of consciences. Two institutions have been observed in order to illustrate the quotidian of the child education institute and to point out some aspects which deserve a higher pedagogical investment in order to act as a focus of resistance.
Nanoarquitetura em sistemas de alumina anódica porosa e configurações magnéticas de partículas de Co eletrodepositadas
(Universidade Federal de São Carlos, 2005-10-30)
Cardoso, Márcia Lourenço
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Souza, Ernesto Chaves Pereira de
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https://lattes.cnpq.br/1505400360366643
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Oliveira, Adilson Jesus Aparecido de
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https://lattes.cnpq.br/4640148190073166
This thesis presents results on tailoring porous anodic alumina films, the Co-CoO electrodeposition on alumina template and the magnetic behavior of such system. Mono and bi-modal pore distribution at the film surface were obtained in a two-step anodization. It was observed the growth of non parallel pores when temperature or current were modified from the first to the second step. The current plays the great role in the top layer morphology modification. The Co ions were electrodeposited on regular Al2O3 membrane under an sine waveform potential. This procedure provided the formation of a granular system of Co-CoO. For small times of deposition the sample presents major value of the coercive field in the perpendicular to plan of the substrate direction. Carrying out the electrodeposition for a long period the magnetization easy axis goes to the sample surface plane, where the coercive field was major. The existence of Co oxide was inferred through of magnetization measurements. It was detected "exchange bias" fields, results of the coupling between antiferromagnetic/ferromagnetic portion of the sample. This phenomenon was observed in both directions of the samples at 250 K. The results also show the domain formation on a antiferromagnetic portion at the ferro/antiferromagnetic interface. Such domains were allowed to rotation near the blocking temperature.
Método para implantação de um sistema de gestão da qualidade baseado na norma ISO 9001:2000.
(Universidade Federal de São Carlos, 2005-11-11)
Leite, Daniela Cristina Medeiros
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Martins, Manoel Fernando
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https://lattes.cnpq.br/3921504261628850
The family of ISO 9000 standards is being constantly adopted by the companies, manufacturing and services, as a base to implement a quality management system. With the 2000 review, the ISO 9000 has progressed from a quality assurance system to a quality management system, incorporating the eight total quality principles. For this reason, in order to companies achieve success in the ISO 9001:2000 implementation, it is necessary that these principles become part of their culture, because there is a cultural gap between the quality assurance and quality management concepts. In this context, the objective of this study is propose a method of implementing a quality management system (QMS), based on the ISO 9001:2000 standard, considering, beyond the requirements demanded by the standard, aspects related to company culture, human resources qualification and use of continuous improvement methods and tools. The development of this study happened through an action research, using the method SSA (Soft System Analysis), in a leather industry, which was at an intermediate phase of ISO 9001:2000 standard implementation. The finds achieved in the research showed that the method proposed was adequate to the initial objective, because it suggests actions that can minimize or eliminate the gaps existent in a quality management system, and helped the company to achieve a considerable improvement in its QSM. Besides, it was possible to conclude that the ISO 9001:2000 standard should not be implemented only through written procedures and training routines, but aspects like company culture and human resources should also be considered.
Processamento e caracterização de condutores de íons O2- a partir de cerâmicas BIMEVOX
(Universidade Federal de São Carlos, 2005-11-11)
Biz, Helder
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Morelli, Márcio Raymundo
;
https://lattes.cnpq.br/0172837599844991
In this work, the processing of BIMEVOX family ceramics (ME-doped bismuth vanadate, ME =Cu2+, Fe3+ and Ti4+), obtained by precursor oxides fusion method was studied. The resulting powders were valued by X ray diffraction, atomic emission spectrometry, scanning and transmission electronic microscopy, and analyzed by particle size distribution. The obtained results showed the oxides fusion method promoted the formation of the interest phases, with the desired content of dopants. The powders presented a majority crystalline portion and a residual vitreous phase, which can be responsible for the relatively high final densities (above 95%) of the sintered samples, reached at lower temperatures (750 ºC for BICUVOX and 800 ºC for BIFEVOX and BITIVOX) and shorter firing times (4 hours), if compared with some literature data. The microstructure of samples was revealed without any superficial treatment or etching (thermal or chemical), but there is not an explanation for this phenomenon yet. The grains presented a mean size small enough (about 3 µm) to promote a reproducibility of the electrical conductivity over a heatingcooling thermal cycle, at the temperature range valued (150 450 ºC). Electrical conductivity was not significantly influenced by the pO2 not even for the final density of the samples, and the activation energy values for the conduction presented small difference. Electrical measurements indicated the presence of order-disorder transformations in between 450-500 °C, which were showed up through the change of the slope in the conductivity-temperature curves. According to the carried out tests in prototypes, in spite of unsuitability of BIMEVOX materials studied for the application in melted metals at 1600 °C (due low melting point of these ceramics), they can be possibly applied as gas sensors in ambient of lower temperatures.
Efeitos da lesão do núcleo do trato solitário comissural sobre a ingestão de água e sólido
(Universidade Federal de São Carlos, 2005-11-11)
Blanch, Graziela Torres
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Colombari, Débora Simões de Almeida
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https://lattes.cnpq.br/1684467594359403
The central nervous system (CNS) has an important function in the regulation of homeostatic mechanisms controlling the volemia and osmolality of the body fluid. The nucleus of the tract solitary (NTS) is the primary site of the cardiovascular afferents and peripheral osmoreceptors. From to NTS, the information about arterial blood pressure, extracellular fluid composition and volume goes to other areas into the CNS involved to cardiovascular regulation and hydroeletrolytic balance, e.g., anteroventral third ventricle region (AV3V), paraventricular nucleus of hypothalamus, lateral parabrachial nucleus (LPBN) and the vasomotors nuclei of medulla. The NTS can be anatomically divided in rostral NTS, intermediate NTS and commissural NTS (commNTS). Therefore, the aims of this study were: a) to study the effects of acute and chronic electrolytic lesion of the commNTS on the water and 0.3 M NaCl intake induced by different protocols that induced intracellular and/or extracellular dehydration, b) to study the possible mechanisms which commNTS lesion induce changes in water and/or sodium intake, evaluating the hemodynamic and renal changes. Male Holtzman rats (300-320g) were submitted to commNTS or sham lesion. The animals were anesthetized and placed in a stereotaxic apparatus. Through a partial craniotomy of the occipital bone, the dura mater and arachnoid were incised, and the dorsal surface of the brain stem was exposed. Electrolytic lesions were performed with a tungsten electrode inserted into the brain stem following coordinates: 0.0 mm lateral, 0.4, 0.7 and 1.0 mm posterior to the calamus scriptorius, and 0.1 mm below the dorsal surface of the brain. The electrolytic lesions were performed with 1 mA current delivered for 5 seconds, twice with a 30 s interval between them. Sham-operated rats underwent the same procedures, but no current was passed. Initial body weight was the same, but commNTS lesioned rats had a significant loss in the weight compared with sham rats during the 14 days. The pressor response of the chemoreflex, tested with potassium cyanide iv, was reduced in chronic commNTS lesioned rats, whereas the baroreflex tested with phenylephrine and sodium nitroprusside was unchanged in commNTS lesioned rats. The water intake induced by intragastric (ig) gavage of 2 M NaCl was greater in acute and chronically commNTS-lesioned rats compared to sham rats. There was no 0.3 M NaCl intake after ig gavage of 2 M NaCl in lesioned or sham rats. Acute and chronically, the treatment with furosemide (diuretic) and captopril (ANG II converting enzyme inhibitor)
Jovens universitários e álcool: conhecimentos e atitudes.
(Universidade Federal de São Carlos, 2005-11-15)
Bresighello, Maria Luísa Moura
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Montrone, Aida Victoria Garcia
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https://lattes.cnpq.br/9011731777978672
This quantitative-qualitative research was developed with the objectives to evaluate the alcohol consumption through the Alcohol Use Disorders Investigation Test - AUDIT, between the students of graduation of the course of Physics, of the Universidade Estadual Paulista - UNESP, Campus Rio Claro and, to identify to the knowledge and attitudes of these students on the alcoholic beverage ingestion. The results gotten in the initial stage of the research -quantitative - had allowed the aiming of the following stage - qualitative. Interviews half-structuralized with eight students of the 30 had been carried through that they had answered to Test AUDIT. The results of the related test had shown that, little more than 83% present standard of consumption of low risk. The transcription and analysis of the interviews had allowed a deepening in the universe of these students, where it was possible to apprehend part of its knowledge and attitudes with relation to the alcohol, and the identification of the factors of vulnerability and empowerment. The orientation necessity was clear, to the adults who coexist young and children, on the curses of the alcoholic beverage use and on the necessity of a bigger attention to those situations that come to facilitate its use. It was possible also to perceive the importance of the family as factor of support to the behavior of these young. How much to the pertaining to school environment, it was verified that it lacks to preparation to the educators and professionals of the health, and a bigger reflection on the part of all the society, so that the question of the alcoholic beverage consumption is faced as catalytic of sad future consequences for children and young. The educative work must exceed the field of the information and the university must dare and go beyond the knowledge technician, for the integral formation of the diverse professionals who for it pass.
Formatos de varejo de alimentos: um estudo sobre as preferências do consumidor.
(Universidade Federal de São Carlos, 2005-11-17)
Moura, Thais Lacava de
;
Silva, Andrea Lago da
The intention of this work is to study the consumer behavior in the choice of retail to purchase food. Being more specific, the work has the objective to identify the profile of the consumers who frequent diverses food retails in the main Brazilian capitals. The identification of the consumers has intention to elaborate recommendations that can be used for retail companies in the strategical decisions of market positioning and adaptation of the store to the consumer profile. So, the work has two bases: the bibliographical revision and the empirical analysis. The bibliographical revision approaches the consumer behavior in general and also in specific food purchase, moreover, it approaches the food retail in Brazil and its characteristics. This revision allows to see the general of consumer behavior and which characteristics of the consumer and others variables are associates with the choice of a retail to purchase food. The empirical analysis has the objective to identify the profile of the consumers of four Brazilian regions in the choice of one or more retail to purchase food. In the conclusion, the bibliographical revision and the empirical analysis are joined to find the similarities and differences between which is found in the literature and that really occurs; because, the characteristics of the consumer and the others variables in the bibliographical revision must reflect on some form the profile of the consumer identified in the empirical research. It is standed out that the fact of the field research to enclose four Brazilian regions, the result in some region can be different of the found in literature because of regional specificities (characteristics of the consumer or local variable). Finally, the elaboration of suggestions and recommendations to the retail companies is made from the junction of the two bases, the theoretical revision and the profile of the consumer.
A utilização da gestão por competências: estudo de caso em duas empresas.
(Universidade Federal de São Carlos, 2005-11-18)
Silva, Marco Antonio Costa da
;
Rachid, Alessandra
;
https://lattes.cnpq.br/6981682198988902
This dissertation analyzes concrete cases of introduction of the competence management, to know how the changes in the work organization were associated with it. The literature about competences has advanced in the last years, not only in volume of publications, but also in the dimensions of analysis of the subject. The competence management was introduced in these organizations as a management model that would give sustentation to a more general process of change that the companies were passing by, giving the managers the support to validate their decisions. It was traced a picture about organizational changes related to work and human resources practices and its relation to the introduction of competence management. Later, an analysis was carried through concrete cases removed from the literature about introduction of the competence management. Finally, a research was conducted in two companies of different sectors that introduced the competence management. For this, interviews were realized with human resources and production managers and with operational workers. The results of the research showed that the companies have adopted the competence management as part of a wider process of reorganization. It was verified that the companies prioritized the development of individual abilities e the more important initiatives related to the competence management are related to the practices of training and performance development and evaluation.
Efeito da simpatectomia química sobre as vértebras de ratas osteopênicas induzidas pela ovariectomia
(Universidade Federal de São Carlos, 2005-11-22)
Wang, Charles Chenwei
;
Nonaka, Keico Okino
;
https://lattes.cnpq.br/4551036775738296
Osteoporosis is a pathology that afflicts mainly postmenopausal women, consequently this disorder generates severe social and economic consequences. This disease is characterized by low bone mass (osteopenia) and bone tissue microarchitectural deterioration, which leads to enhanced bone fragility, thus resulting in fracture risk increase. As an experimental mode of bone loss in post-menopausal women the ovariectomized rat has been used. The periosteum is innervated by sympathetic nervous system (SNS) whose neurotransmitters regulate direct and indirectly the bone metabolism. In this study, we evaluated the possible influence of SNS on physical, biometric, biomechanical and biochemical parameters of the 5th lumbar vertebrae of ovariectomized (ovx) rats. Therefore, 4-month-old female rats were randomized in 5 groups: Basal (sacrificed at the beginning of the experimental), Intact (treated with 0,9% saline, sc), Control (ovx rats treated with 0,9% saline, sc), GUA 30 (ovx rats treated with 37 mg of guanetidine /kg, sc, for 30 days) and GUA 8 (ovx rats treated with 40 mg of guanetidine /kg, sc, for 8 weeks). The animals were sacrificed at the end of 8 weeks, except for the Basal group. The 5th lumbar vertebra was removed and defleshed and physical, miometric, biomechanical and chemical properties were analyzed. The denervation was confirmed by palpebral ptose and diarrhea observed in all treated animals. The Control group showed lower mineral and bone densities than the Intact group with consequent lower biomechanical parameter, indicating that castration was effective to induce osteopenia. The sympathetic denervation partially inhibited the osteopenia as shown by the higher values of mineral and bone densities when compared with the Control group. But, these better physical parameters did not induced better bone quality as shown by biomechanics.
Entre cercas, barracos e manchetes: uma análise sobre o problema agrário na agenda da mídia do sudoeste do Paraná.
(Universidade Federal de São Carlos, 2005-11-23)
Botelho, Ronaldo Martins
;
Azevedo, Fernando Antonio Farias de
On this research we have analyzed the agrarian problem of press in the southwest of Paraná, in 2003. To give support to the research, we used two daily newspapers from Paraná: Jornal de Beltrão, from Francisco Beltrão and Diário do Povo, from Pato Branco, and two weekly newspapers, O Palmense and Correio Regional, both from Palmas. The theoretical empirical model adopted is the agenda setting, a hypotheses that holds that media participates in the construction and definition of people s choices. We have focused on this method the agenda of the media, aiming at noticing, though it, the elaboration of the micro social agrarian agenda. The procedures include, besides library research, the quantitative content analysis of these newspapers, and some interviews with editors and leaders in the area. The research presents some relevant topics as well. The agrarian theme involves, above all, the historical perception of the importance of the land and of the rural sector in the political-economical tradition of the country, as well as the fact that it is a permanent social problem. Considering a political perspective, the year of 2003 marks the beginning of a new government, with President Lula, whose proposals indicated sensitive changes in the policies for the land sector. Finally, in the academic-empirical dimension, we found that there is not enough study on agenda setting in this region, specially those related to the agrarian theme, even though this is a geographic area marked by historical land conflicts. In general, we have observed that the local newspapers are legitimating and act in mutual level, producing and exaggerating versions that are set by interest groups, which quite often reverberate in the press. Through the analysis of the graphs and of specific books, we noticed that the history of agents and media professionals; the class appeals that mobilize the actors and the level of dependence in the relations of native press with official government influence the local agenda. We have also identified that this determination occurs substantially through the editorial process, be it under the connivance of political power, or through the prerogative of the financial power. We have also noticed the relations between the mobility of the actors and the visibility of the agrarian theme in the micro regional press, through fields like tradition, family, status and publicity.
Contribuições para a análise do comportamento fluidodinâmico de um leito vibrofluidizado
(Universidade Federal de São Carlos, 2005-11-25)
Daleffe, Roger Valeri
;
Freire, José Teixeira
;
https://lattes.cnpq.br/2270677706718167
Vibro-fluidized beds with inert particles as fluidizing medium have been appearing as an innovative technique for drying of suspensions and pastes. Aiming to contribute for the comprehension of phenomena involved in such processes, an investigation of fluid dynamic behavior of a vibro-fluidized (and also of a fluidized) bed with inert particles was carried out in this work. Glycerol was employed to wet the inert particles and then simulate the presence of a liquid paste into the bed. The purpose of the present work is to obtain a detailed investigation of the effects of amplitude, frequency of vibration, dimensionless vibration number, degree of liquid saturation, and of the particle size and density on the fluid dynamic behavior of the bed. The research included also an experimental investigation on the effects of the particle size distribution on the dynamic of inert particles into the fluidized, vibrated and vibro-fluidized beds, with an evaluation of size segregation patterns. The experiments were divided into three groups: in the first one, preliminary fluid dynamics tests were carried out; in the second one, the fluid dynamic behavior of fluidized and vibro-fluidized beds was investigated, and in the last one, the effects of particle size distribution on the dynamics of fluidized, vibrated and vibro-fluidized beds were verified. The experimental apparatus used in the tests was a vibro-fluidized bed constituted of a glass chamber, with a 0.114 m diameter cylindrical section, thickness of 0.003 m and height of 0.50 m. Ballotini spherical glass beads (ρp =2,500 kg/m3), with mean diameters from 1.10x10-3 to 17.00x10-3 m, polypropylene spheroids (ρp = 935 kg/m3) with mean diameters of 2.60x10-3 and 3.67x10-3 m and elliptical cylinders of polystyrene (ρp = 1,050 kg/m3) with equivalent diameter (volumetric diameter) of 2.51x10-3 m, were used as inert particles. The bed was operated under dimensionless vibration numbers from 0.00 to 6.00, for amplitudes varying from 0.000 to 0.021 and frequencies of vibration from 0.00 and 18.20 Hz. Glycerol saturation degrees (defined as the ratio between volume of glycerol and volume of voids in the fixed bed) varied from 0.0000 and 0.0072. The glycerol was employed to simulate the presence of a liquid fed into the bed in a batch mode, since it practically does not evaporate under the conditions of present work. Identical values of dimensionless vibration numbers (Γ) were obtained using different combinations of amplitudes (A) and frequencies of vibration (f), aiming to verify the universality of such a parameter to describe vibration characteristics of a vibro-fluidized bed. Four types of size distribution models were used in the investigation of the effects of the particle size distribution on the dynamics of vibro-fluidized beds: binary, flat, Gaussian and a reference one, all of them with a mean Sauter diameter of 2.18x10-3 m. In the range of experimental conditions investigated, it was observed that the dimensionless vibration number does not fully characterize the fluid dynamic behavior of the vibrated systems. Some degree of particle agglomeration was always observed in the presence of glycerol, yielding to an irregular and poor fluidization. The use of vibration in such cases improved the particle circulation in the bed, thus reducing the agglomeration and minimizing the formation of channelling. When specific particle size distributions were adopted for fluidization, some size segregation pattern was observed in almost every case. In the fluidized bed, the smallest particles stayed at the top of the column, while in the vibrated one the largest particles tended to concentrate at the top. In a vibro-fluidized bed under short amplitude of vibration (0.003 m), some segregation was noted but in a less extent than that observed in the fluidized bed at similar conditions. At high amplitude of vibration (0.009 m), no size segregation was detected.
Desintegrinas de Bothrops alternatus: biologia molecular, estudos in vitro, in vivo e bioinformática estrutural
(Universidade Federal de São Carlos, 2005-11-28)
Ramos, Oscar Henrique Pereira
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Araújo, Heloísa Sobreiro Selistre de
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https://lattes.cnpq.br/4065824911933203
Disintegrins are toxins frequently found in snake venoms. Their biological effects are due to their binding to cell receptors known as integrins. Aiming to isolate new disintegrins from Bothrops alternatus snake, a cDNA library was constructed upon the transcripts expressed in the venom gland from one specimen. Two disintegrins, called DisBa-01 and DisBa-02 were cloned and sequenced. The amplification of other medium-size disintegrins and metalloprotease-disintegrins was also achieved. The recombinant toxin, DisBa-01, was expressed in an optimized bacterial system (Escherichia coli BL21(DE3) pET28a+DisBa-01) and tested in several biological assays. The toxin inhibited the platelet aggregation (IC50= 235nM) induced by collagen in rabbit s platelets rich plasma (PRP). Using ADP as inductor, the platelet aggregation inhibition was also observed in PRP from rabbits (IC50= 124nM) and human (IC50= 475nM), as well as in washed platelets from mice (IC50= 25nM). Competition assays for the αIIbβ3 integrin using specific ligands, fibrinogen and a specific antibody against activated αIIbβ3, revealed that the toxin strongly binds to this receptor (respectively IC50=18nM and IC50=70nM). Furthermore, the toxin inhibited the proliferation of cells that representatively express αVβ3 integrin, HMEC-1 and B16F10-2B8, in a dose/time dependent manner and the adhesion of B16F10-2B8 to vitronectin (IC50= 225nM). In vivo, the toxin significantly inhibited the thrombus formation in arterioles (Treated: 58,4 ± 1,6 min.; Control: 24,3 ± 2,8 min., p<0,002) and venules (Treated: 46,6 ± 6,8min.; Control: 27,1 ± 1,3min., p<0,002), prolonged the bleeding time (Treated: 989 ± 140 sec.; Control: 202 ± 22 sec.; p<0,008) and inhibited the pulmonary mestastasis of B16F10-2B8 (~92%, 12 days after the tumor cells injection). These results, as well as structural bioinformatics studies strongly suggest the binding of the toxin with αIIbβ3 and αVb3 integrins, what motivates further studies aiming the therapeutic/laboratorial application of DisBa-01 or its derivatives.
A privatização do setor elétrico paulista: suicídio de um grupo.
(Universidade Federal de São Carlos, 2005-11-28)
Pedroso Neto, Antonio José
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Grün, Roberto
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https://lattes.cnpq.br/6028266827740491
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https://lattes.cnpq.br/8781436602934292
As from 1995, the companies of the electric sector in São Paulo underwent organizational changes that both preceded and made privatization viable. They were carried out by their own workers under the label modernization . The problem to be studied in this research was to understand how they unleashed the dynamics of change, since they were aware that the changes would lead to the dismantle of their own body. In the changing process, the guidelines they adopted depended on the external demands. However, under bourdieusian sociology perspective, we consider that they also depended on the measures adopted in each company, that is, they resulted from the interpretation and redefinitions of these demands by the agents interacting under the constraints of company s field of the power. The empirical research was centered in one of the companies: in its unions and professionals, fundamentally, in the modernization agents, which was led by a limited group of workers in higher ranks. The main sources of data were interviews, questionnaires, documents, and newspapers. In this research we verified that the cardinals from the higher clergy decided for the possibility of carrying out a downsizing conducted by themselves before they were exposed to a takeover in near future. We tried to present the constraints and the instigating perspectives that touched them, and also, how some of their actions concerted with some demands from union entities and professionals. We also verified that, in the presentation and justification of modernization, the cardinals from the higher clergy spread principles of reclassification and ranking of the company and of workers, as well as the idea of rescuing and transferring part of them to a new company . Modernizing would be the bridge. In this context of speech, they called upon the workers who would work on the modernization and selected those who would take part in a training program. In both of them, the offer of posts, beneath the demand, pointed to the establishment of a frontier between those who would be participants and those who would not, a symbolic line which separated those who had the ticket to join in the new company and those with an uncertain future. This border implied in the division and ranking of the whole of the workers, with consequences such as increasing differentiation, of individualization and internal competition crowned by a realignment with the cardinals from the higher clergy. Finally, it created social conditions of reception of speech and became a mechanism that allowed them to impose their prescriptions by means of symbolic violence. Yet, we verified that with modernization, the cardinals from the higher clergy had something to demonstrate to the possible buyers: a reengineering under study and implementation. With it, they had diagnoses and bases to give continuity to potential achievements: redesign of processes, gains in productivity and efficiency, redimensioning of staff, formalization of activities and know-how of the workers. In conclusion, the cardinals from the higher clergy initiated a changing process which involved the workers and acquired its own dynamic. Further to that, everybody realized that the studies and the implementations carried out had produced and would produce unpredictable and undesired consequences: The reengineering and the lack of definition as to the future, as a matter if fact, apply to all.
As capacitações e os recursos logísticos para a prática do Supply Chain Management (SCM)
(Universidade Federal de São Carlos, 2005-11-29)
Marchesini, Márcia Maria Penteado
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Alcântara, Rosane Lúcia Chicarelli
Within the current context of competition, we can perceive the emergence of a new paradigm of business management based on the fact that companies no longer compete isolatedly or individually among themselves, but through the various supply chains they belong to. This new paradigm or concept of management refers to Supply Chain Management (SCM). Particularly, logistics has a significant impact on the SCM concept and represents the fundamental process for this concept as it propitiates the operational arrangement of the supply chain. Thus, this dissertation searched to identify the effects of the adoption of the concept of SCM and its initiatives in the logistic function of the distribution channel companies of grocery products, generating, through the Resource Based View (RBV) as classification approach, the identification of logistic capabilities and resources. For in such way, there was an ample discussion about the concept of SCM and its different views and definitions. In this context, the needed logistic capabilities and resources to adopt SCM concepts and initiatives were identified in the bibliographical revision of this research. This dissertation, through this ample discussion, will contribute to the more development of SCM theory and of unification of the logistic theory. There were various logistic capabilities, like the adoption of logistics function as a strategic activity, the adoption of concept of integrated logistics, the adoption of Lean and Agile Paradigm or Re-supplying. Additionally, there were various logistic resources, like IT (Information Technology) and its tools, the software related to logistics and Logistics Information System, crossdocking. To complement the theory discussion about SCM and logistic capabilities and resources, this research realized three case studies, whose object was to evaluate the adoption and the degree of development of these logistic elements, through the contrast between encountered theory and practice, and identify the main benefits to each company, the expected results but not reached and the main logistic problems faced for each company. With the results from these three cases, there was good adoption in the practice of logistic capabilities and resources, the literature emphasized, independently the degree of development in each company. However, it was evident the discrepancy among the researched companies as for the adoption and use of the logistic change points existent in the literature, and their development degree, that allowed suggest a hierarchy of companies in terms of the implantation of logistic capabilities and resources. Specifically, this dissertation holds a qualitative research approach, as investigative method the multiple case studies, as the instrument of data collection the interview which was carried out by semi-structured questionnaire.
Coleta de resíduos sólidos domiciliares em local de entrega obrigatória: aspectos de custos e opinião dos usuários
(Universidade Federal de São Carlos, 2005-11-30)
Souza, Edson Marcondes de
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Teixeira, Bernardo Arantes do Nascimento
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https://lattes.cnpq.br/1166854416745527
This work presents a comparison between conventional solid waste collection, also known as door to-door collection which is used by most of the Brazilian s municipalities and the Mandatory Drop-Off Waste Collection At Specific Sites (CLEO), to where the residents must transport their domestic solid waste to be collected. Literature points to the Mandatory Drop-Off (CLEO) as likely to have the lowest cost in the solid waste system. Also, the paper proposes to compare this type of collection with the door-to-door collection. And in addition, to find out the residents opinion about this type of collection, a survey was conducted with the residents of a street segment in Bebedouro-SP, where a drop-off collection is currently made at specific sites, but not in a mandatory way. The survey points that the collection at specific points is 10 to 30 per cent less expensive than the door-to-door collection. (If crew and vehicles are taken in consideration) Bebedouro/SP s survey shows that 75% of respondents are involved and know about the collection of solid waste services. Most of residents that live around main street approved the way that collection and disposal are made, at a central island. However, 60% do not want a container in the curbside of their front house. Another important issue that the respondents declared is their disposition to make a certain sacrifice , like to walk a lot a distance to dispose their solid waste in order to pay their Town s taxes at a discount rate.