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As novas ações coletivas frente à crise do modelo sindical corporativista: sindicalismo cidadão e fusão de sindicatos
(Universidade Federal de São Carlos, 2007-03-28)
Melo, João Alfredo Costa de Campos
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Noronha, Eduardo Garuti
;
https://lattes.cnpq.br/6908348693613769
;
https://lattes.cnpq.br/0629454650685817
This study intend to tematizar the application of new class actions, having as focus the mining unionism, represented for the Union of the Eletricitários of Minas Gerais (Sindieletro). Here two collective actions intitled unionism had been analyzed citizen and fusing of unions. Faced as accomplishments of unionism CUT, the union citizen and the fusing of unions are enrolled as class actions in search of conquests, under a more optimistical perspective, of spaces of performance and social integration, or attempt of maintenance, for a more pessimistic optics, of the old profits. The creation of other forms of collective action, diverse of the traditional ones, made possible the construction of a unionism that started to search with frequency the participation in institutional spaces until then little usual, the diversification of the in such a way national agenda as internationally. The search for partnerships with other social movements and organizations, allowed the Unions, between them the Sindieletro, the unification of regionais/locais politics through programs of work generation and income, offers of courses of professional qualification and cultural formation, support to other movements you beat and cooperatives. The fusing of unions is based as another modality of class action. In contrast of the practical citizens, the fusing reveals to more radical and modifies proposals of all the administrative structure of the involved entities in the process. The fusing of the Sindieletro with the Sindelt, was perhaps, one of the examples most succeeded of job of this class action in Brazil. However it still continues being ripened day the day. The creation/introduction of new modalities of class action for the cutista unionism, as presented for the Sindieletro, in such a way needs to be tematizado and to be understood by studious syndical and the proper actors, a time that comes if placing with the center of the changes practicaldiscursive of the CUT and its associates.
Interferência de fatores bióticos e abióticos na propagação e conservação de Casearia sylvestris Swartz (Salicaceae)
(Universidade Federal de São Carlos, 2007-03-28)
Imatomi, Maristela
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Perez, Sonia Cristina Juliano Gualtieri de Andrade
;
https://lattes.cnpq.br/9973185407856723
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https://lattes.cnpq.br/8057538383851680
C. sylvestris presents great economic and social importance, being used as phytotherapic. The objective of first chapter was to supply informations on the reproductive phenophase, morphology and seed germination of C. sylvestris, and verify the existence of variability of the germinative behavior according to seed origin. Seeds from two places: Itirapina-SP and Londrina-PR, with 14,5% and 22,86% of moisture contente, respectively, had been germinated, in the absence of light at constant temperatures of 27, 30 and 33 ºC and under fotoperíodo of 12 h and alternating temperature of 20-30 ºC. The effect of growth regulators was verified with solutions of gibberellic acid (10 and 20 mgL-1) or kinetin (5 and 10 mgL-1). The tetrazólium test showed that 32% of the seeds from SP and 66% from PR were viable. Both lots presented the three-phase standard embibition curve, with differences at emission times of the primary root. In the temperature test the excellent band of germination between 27 and 30 ºC was determined for both lots. The use of growth regulators was not efficient to improving the seed performance. Seedlings emerged from SP had been more vigorous (highest values of mass), however shorter than PR lot. After the storage, SP lot presented reduction in the viability and vigor, but PR lot only vigor was reduced. In the second chapter the this objective of the study was to analyze the population structure and the space distribution of C. sylvestris in an area of Cerrado sensu stricto, to promote the reproduction of this species through vegetative propagation, determine the origin of buds in root cuttings through anatomical studies and to inquire the allelopathic interference from in the roots extracts of this species. The space distribution was random e, after the fire occurrence in the area, changed to aggregate. The XII popualation of clones is growth while plant-mother population was not. In the stem cuttings was observed small persentage when mixture of ANA and AIB in higher concentrations. Was used by the other side, root cuttings presented 70% of production shoots. Through the anatomical comments it was proven that it is a root buds and that probably the buds present endogenous and reparative origin. The extract from roots reduced the speed of germination of lettuce and sesame, but it did not modify the germination percentage.
"Probabilidades negativas" e tomografia de Qubits
(Universidade Federal de São Carlos, 2007-03-28)
Silva, Alcenísio José de Jesus
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Mizrahi, Salomon Sylvain
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https://lattes.cnpq.br/8143137168199991
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https://lattes.cnpq.br/1883452571239938
In this dissertation we approached the tomography of discrete systems, understood as the representation and the reconstruction of states. For the tomography we used distribution functions of symmetrical pseudo-probabilities. The coefficients of the distribution function of "probabilities" are "joint probabilities", that eventually can be negative, associated to incompatible observables. The "negative probabilities" contains not only information about the measurements of counts, but also on the quantum state of the systems. We present the argument of Scully, Walther and Schleich that uses double slit interference to give a meaning to the "negative probabilities" and we propose one alternative example using beam splitters and an single photon. Like this, moreover we define distribution functions based in generalized quantization axes for any directions, we present the physical interpretation of the resulting "negative probabilities". We showed the reason because all explanation usually done to justify "negative probabilities" seems to be contradictory and are not convincing. Is the interpretation of the "negative probabilities" that retain the heart, not only of the present work, but also, of the whole Quantum Mechanics, its only mystery, as Feynman says
Quantificação de apoptose e necrose mediante corantes fluorescentes e análise de imagens, no cultivo de células de inseto: o caso da Drosophila melanogaster S2
(Universidade Federal de São Carlos, 2007-03-28)
Silva, Bruna Gabriela
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Suazo, Cláudio Alberto Torres
;
https://lattes.cnpq.br/5330234624512448
In animal cell cultures there are two kinds of cell death: apoptosis (programmed cell death) and necrosis (cell death due to external sources). The inovative method of cell death identification that have attracted interest is the use of fluorescence microscopy and fluorescent dye (to bind DNA and RNA). Image analysis techniques has become a useful tool in cell death quantification, once they are non destructive for the culture and have easy application with using adjusted softwares. Based in these new technological trends, the present work considers the development of a methodology for quantification of apoptotic and necrotic cell death in cultures of insect cells Drosophila melanogaster (S2). This methodology involved the development of a experimental procedure using new dyes (YO-PRO-1 and Propidium Iodide), that have presented advantages over the others because they are non destructive to the culture an are able to clearly discriminate between apoptotic and necrotic cell death. The use of this dyes was compared with the method of exclusion of Trypan blue and fluorescent dyes Acridine Orange and Ethidium Bromide. Besides being less toxic to cells S2, YO-PRO-1 and Propidium Iodide showed more sensitivity in the identification of death and in the calculation of cell viability. It also envolved the development of an algorithm based on image analysis techniques for quantification of the two kinds of cell death, less subjective than the manual methods currently used. The algorithm showed to be efficient, fast an of easy application with a error around 2% when compared to manual methodology. The calculated cell concentration by the algorithm was very close to experimental.
Produção ilegal do espaço urbano : estudo de São José do Rio Preto - SP
(Universidade Federal de São Carlos, 2007-03-29)
Santos, Alessandra Cristina dos
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Silva, Ricardo Siloto da
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https://lattes.cnpq.br/5346985934880710
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https://lattes.cnpq.br/3082710111572086
Urban occupation in rural areas by settlements without approval is a growing phenomenon in São Paulo State medium-sized cities, and so far, few works have been carried out about these illegal settlements out of large cities. Such theme-based studies are relevant due to the resulting occurrence of high magnitude negative impacts. The present paper deals with the expansion process of illegal settlements both irregular and unauthorized ones , having as a study case the city of São José do Rio Preto. The aim is to study the phenomenon of illegal settlements production in this city, through their identification and qualification, also the search of causal relationship of this production, analyzing the legal situation and the relationship between this production and public policies and the real estate market dynamics and finally identifying and evaluating the resulting socialenvironmental impacts.
Influência de restrições intrínsecas e extrínsecas no alcance manual de lactentes
(Universidade Federal de São Carlos, 2007-03-29)
Carvalho, Raquel de Paula
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Tudella, Eloisa
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https://lattes.cnpq.br/3207258034860219
The aim of the current research was to examine the influence of intrinsic and extrinsic constraints on reaching movements in 4-6-month-old infants. Age, level of skill and experience gained by spontaneous practice of reaching were the intrinsic constraints analyzed. The relationship between muscular torque required for reaching and gravitational torque was the extrinsic constraint, which was manipulated by different body orientations. Kinematical and qualitative variables for movements performed in supine, reclined and seated positions were analyzed in three different studies in order to verify how constraints affect young infants reaching. The results indicate that body orientation affected reaching behavior in 4- month-old infants. However, when considering the level of skill rather than age, body orientation was shown to affect reaching behavior during its emergence only in less-skilled reachers. The level of skill is thus suggested to be a more relevant constraint than age in the acquisition of reaching. Temporal and spatio-temporal parameters of reaching were more sensitive to constraints imposed by body orientation, age and level of skill. Seated position elicited both reaching in less-skilled reachers during the behavior acquisition and grasping in more-skilled reachers after spontaneous practice. These findings suggest that level of skill, experience in reaching, and body orientation may affect reaching behavior in young infants. These constraints should therefore be taken into account when examining the development of infant reaching. This work supports the idea that the confluence of constraints determines the young infants action and that a change in this confluence can eventuate in a change in action.
Atributos reprodutivos de peixes da bacia do rio São Francisco e implicações filogenéticas
(Universidade Federal de São Carlos, 2007-03-29)
Vasconcellos, Marcelo Grombone de
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Verani, Nelsy Fenerich
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https://lattes.cnpq.br/1862746100743391
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https://lattes.cnpq.br/6281371147401391
In the present study there are presented the reproductive attributes of 12 species from São Francisco river basin, obtained through the hipophysation and manual fertilization of the oocytes. Later the registered data were added to more 23 species, totalizing 35 species. The total data were submitted to the clustering analysis resulting in groups with recognized phylogenetic proximities. The principal component analysis were applied to quantitative and categorical variables resulting in the formation of two great dissimilary groups: one formed by species that presented similar atributtes in relation to the length of the larva newly hatched LTL ,to the adhesiveness of the eggs ADESIOV, to the low relatively fecundity FRG, to the absence of larval movements MOVELAR and to high values for the hatch in hourdegree TE. The other group was formed by species that presented similar atributtes in relation to the total length of females LT, to the absolute fecundity FA, to the presence of larval adhesive organ and vertical larval movements in the water, ADESILAR and MOVELAR, respectively. It is argumented that these two basic reproductive patterns are the polar principles of the different conditions of the qualitative and quantitative reproductive characters that they are so close as more proximities among the species, with rare exception as the Pseudopimelodidae . It was possible to do inferences about the condition of the in Characiformes, Siluriformes and Gymnotiformes, that had your origin, in hypothesis, from nest protoguardadores.
Um processo para a geração de recursos lingüísticos aplicáveis em ferramentas de auxílio à escrita científica
(Universidade Federal de São Carlos, 2007-03-29)
Marquiafável, Vanessa Silva
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Aluisio, Sandra Maria
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https://lattes.cnpq.br/4793072701914550
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https://lattes.cnpq.br/7084417567970607
Within the context of academic research, English is the lingua franca for various scientific disciplines. It is also widely acknowledged that producing an acceptable academic text is anything but a simple and easy task. This is particularly more acute if the author is a novice researcher and English is not his/her first language. One possible solution to minimize this difficulty is the use of writing tools to assist novice researchers during different stages of the writing process. This could involve, for instance, quick and easy access to a collection of authentic linguistic resources extracted from published scientific papers. AMADEUS (Amiable Article Development for User Support) and SciPo (Scientific Portuguese) are good examples of this type of writing tools. AMADEUS is a resource which was designed to help non-native English users write academic texts. It focuses on the fields of Physics and Computer Science specifically. SciPo is a Web critiquing system for writing theses in Portuguese and focuses on the discipline of Computer Science. A variation of Scipo is SciPo- Farmácia, which is a web-based tool to assist non-native speakers of English in writing scientific papers in the field of Pharmaceutical Sciences. The main purpose of this dissertation is to elaborate a semi-automatic process to generate the necessary English linguistic resources required by supporting writing tools, such as the ones mentioned above. The primary aim is to enable researchers from various disciplines to develop their own aiding writing tool, customized to his/her specific field, with no need to refer to linguists, computer scientists and/or academic writing specialists for help. The semi-automatic process proposed here has been designed to include the knowledge which would be provided by these specialists. The main methodology adopted in this research derives from the discipline of Corpus Linguistics (we have used both corpus-based and corpus-driven approaches). This choice relies on the assumption that the success of such tools is strongly related to the corpus from which users collect well-written text extracts so that they can be recycled and reused in the text being produced. The semi-automatic process was evaluated in two ways: i) clearness and completeness of the manuals describing the linguistic resources and ii) quality of the linguistic resources generated and estimated time for developing all the necessary linguistic resources. For measuring the quality of the two evaluation stages, we have used the statistical system Kappa. The results ranged from k=0.72 e k=1.0. These figures can be interpreted as a good understanding of the tasks described in the manuals evaluated. The present research proves relevant in a number of aspects. It opens up the possibility of generating a computational tool to assist non-native English speakers in writing academic texts in any experimental field, by using the knowledge from the semiautomatic process only. It also promotes the use of supporting writing tools as didactic resource for teaching-learning scientific English and the use of metrics to evaluate rhetorical structure models. Last but not least, it produces a rhetorically annotated corpus which may be used for teaching-learning purposes or in natural language processing.
A radiodifusão no Brasil e a ditadura militar : o governo Médici.
(Universidade Federal de São Carlos, 2007-03-29)
Silva, Maurício Ferreira da
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Pellegrini, Tânia
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https://lattes.cnpq.br/0280434883580627
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https://lattes.cnpq.br/6622194022254911
This research focus on the broadcasting in the context of the military dictatorship in Brazil, during the government of Emilio Garrastazu Médici. The broadcasting beginning has been marked by the decurrently transformations of the industrialization process, during 19th. Century. Beyond the research with transmission waves that had marked this period, the industry brought, for the scope of the social organization, the reality of the urbanization process, motivated for the new work relations. The new urban reality constructs, in turn, the ideal scene for mass-media development. In Brazil this reality is not different, since the first research on transmission waves occurs at the 20th. Century beginning, in the moment of intense industrial development. At 1930 s, as a consequence of the capitalist perspective of market, the radio incorporates commercial classification, that influences the appearing of the television in 1950. Then, radio and TV become private properties with lucrative ends, holding with the government the prerogative for the concessions of functioning and to be acting in the sector, as well. From these possibilities, and considering the strategically paper of these vehicles for the social organization, the government, at different moments and with different objectives, starts to use them to propagate institutional advertising, even though inaugurate its own networks. This use intensifies from the military dictatorship establishment, in 1964. The military government that controlled the national politics during twenty years had massive invested in the structural development of radio and television networks, beyond using them as mechanism of supporting, legitimating and propagation of its authoritarian ideology. The imposed bases created from the military blow at 1964 had served as foundation for Médici government puts under control the broadcasting vehicles, in order to continuity theirs structural development, to establish the censorship of the programming, as well as to create an authoritarian legislation that directly limited the action of the involved ones with the functioning of the broadcasting.
Complexos fosfínicos de rutênio : hidrogenação, ROMP - hidrogenação
(Universidade Federal de São Carlos, 2007-03-29)
Bogado, André Luiz
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Batista, Alzir Azevedo
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https://lattes.cnpq.br/6469642481998660
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https://lattes.cnpq.br/6327438225583361
ON THE RUTHENIUM PHOSPHINIC COMPLEXES: HYDROGENATION, ROMP-HYDROGENATION is a concise explanation about the ruthenium chemistry with donor bulky electron-rich biphosphines as precursor unity to prepare ruthenium carbon moiety. The complexes synthesized were applied as precatalyst on the hydrogenation of double bonds and non polar double bonds, as well as precatalyst on the assisted tandem catalyses of cyclooctene, ROMP Hydrogenation. The dihydride complex [RuH(dtbpm)]2-μ- (Cl)2 have been applied with good results as a precatalyst at mild conditions to hydrogenate polar and non polar double bonds, and remarkable activity over a substrate containing both kind of bonds. The regioseletivity can be managed by simple modification on the variable conditions of the system, applying different solvent, auxiliary ligands trigged on the course of the reaction, and addition of co-catalyst. By the way, the complex [RuH(dtbpm)]2-μ-(Cl)2 is a powerful precursor to afford new hydride complexes containing ruthenium. In the fact of this view, the complex [RuHCl(dtbpm)(bipy)] achieved from [RuH(dtbpm)]2-μ-(Cl)2 is the first mono hydride complex, that is active on the reduction of acetophenone without base conditions. The photochemistry behaviour of the vinylidene complexes containing ruthenium II obtained from the isomerization and -η2 coordination of the phenylacetylene was studied, with special attention to the complex [RuCl2(PPh3)2(bipy)(=C=CHPh)](PF6), which presents an intense emission centrated at 460 nm, when excitated between 300 400 nm at room temperature. The first coordination of the ligand 1-tert-butil-3-(di-tertbutilphosphinomethyl) imidazol-2-ilidene (CNCP) on the ruthenium centre is describing to afford the complex [RuCl(CNCP-κ2(C2,P))]2-μ-(Cl)2.The last one is a well defined binuclear ruthenium (II) complex with 16 electron valence in two chloride bridge, stabilized by the bulky, electron-rich chelating ligand (CNCP).
Avaliação de programas de treinamento de professores para promover habilidades sociais de crianças com dificuldades de aprendizagem
(Universidade Federal de São Carlos, 2007-03-30)
Molina, Renata Cristina Moreno
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Del Prette, Zilda Aparecida Pereira
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https://lattes.cnpq.br/8113238388739093
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https://lattes.cnpq.br/1634522709499780
Although the importance of learning disabilities has been recognized since many years, the high rates of failure in various series of fundamental teaching still preoccupy researchers of several areas. Recognizing the importance of the establishment and maintenance of social interactions between students and their environment, and highlighting the relations between the teacher and student as an element that constitutes the foundation of teachinglearning process, had as objectives initial (Stage 1): (1) to elaborate and to apply a social skills training program concerning in-service teachers, aiming at the promotion of interpersonal development in their students who have learning disabilities; (2) to evaluate the possible effects of this program on the academic and social repertories of these students. This stage was done under a near-experimental delineation, made up of an intervention group (SA1) and two non-equivalents control groups (SA2 e SR), with evaluations of students social and academic repertories, before and after the intervention. In order to monitor the formation program, evaluations about SA1 teacher s conceptions and performances were done. The intervention s objective led the teacher to understand the role of social skills to students social and academic performance, to perceive the relations between her behavior and students behavior, and to increase her social skills repertoire promoting interpersonal development in the classroom. The results obtained after intervention have shown: (a) teacher s difficulty in identifying and evaluating her strategies of interpersonal relations promotion, and reduction of inadequate behavior in the classroom; (b) gains in SA1 social s repertoire not equivalents to SR s and less expressive than the SA2 s. These data led to the planning of the second stage (Stage 2), which had as objectives: (1) to elaborate, apply and to evaluate a social skills training program concerning teacher's acceleration classrooms (in group), aiming at the promotion of their competence to establish facilitating conditions of social skills promotion in their students, and reductive conditions of interpersonal conflicts in classroom; (2) to evaluate possible effects of this program about the social skills repertoire in students who have learning disabilities, about the occurrence of interpersonal conflicts in the classroom, and about the teacher s social-educational skills repertoire. The eight involved teachers evaluated the social repertoire of their students before and after the intervention. In order to monitor the formation program, evaluations were accomplished about teacher s conceptions and performances. The intervention, configured with the same objectives as Stage 1, also aimed on emphasizing the teacher s analytical capacity. The intervention program generated gains in teachers social repertoire and in their students who had learning disabilities, confirming the benefits of Social Skills Training about the interpersonal repertoire of educators and pupils. Some considerations about Stages 1 and 2, such as participants motivational characteristics and the application of the procedures, are shown in order to explain the difference in results that were found. Discussions about implications of results for the Special Educations were showed too.
Caracterização metabólica e cinética do cultivo de três hibridomas para produção de imunoglobulinas com especificidade e antígenos eritrocitários para uso hemoterápico
(Universidade Federal de São Carlos, 2007-03-30)
Ferreira, Douglas
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Suazo, Cláudio Alberto Torres
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https://lattes.cnpq.br/6716019534474825
In the last two decades mammalian cell cultures have been broadly used for the industrial production of pharmaceutical, proteins, in particular the monoclonal antibodies by cultures of murine hybrid cells (hybridoma). The development of bioprocess for industrial scale of monoclonal antibodys (MAbs) depends on the determination and optimization of several physiological and metabolic parameters. In this work are shown preliminary development results of the bioprocess for production of three MAbs for blood typing through the ABO system, with is of great interest for Brazilian public health. Experiments with three lineages of murine hybridomas which were able to secret three different immunoglobulins with specificity to ABO human blood antigens were accomplished in Spinner flasks using RPMI 1640 medium and fetal bovine serum (FBS) in concentrations of 20 and 10 % vv, temperature of 37 ºC and pH 6.8 7.4 .The three hybridomas showed very different growth patterns in these culture medium The cultivation with 20 % v/v of FBS as much as the cultivation with cells adapted to 10 % v/v FBS showed the necessity of a better balance of the amino acids formulation in the culture medium in order to improve the specific maximum grow rate (µmáx) and maximum cells density (CXmáx).
Otimização das condições de cultivo de Erysipelothrix rhusiopathiae para produção de vacina contra erisipela suína
(Universidade Federal de São Carlos, 2007-03-30)
Silva, Adilson José da
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Giordano, Roberto de Campos
;
https://lattes.cnpq.br/0834668419587001
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https://lattes.cnpq.br/3447469350644179
Swine erysipelas is one of the diseases responsible for the great economic losses in swine-producing areas of the world. The bacteria Erysipelothrix rhusiopathiae is the causative agent of erysipelas, and the vaccines currently available for prevention of this disease are produced with the whole broth culture containing the inactivated microorganism or its live-attenuated form. A surface protein was identified as the main antigen. It can be found in the culture supernatant or attached to the cell wall through interactions with the choline residues from the teichoic and lipoteichoic acids of this structure. Considering the lack of information in the scientific literature about studies concerning the growth pattern of this pathogen, the company Vallèe S.A, a Brazilian industry of veterinary pharmaceutical products, established a partnership with researchers form the Chemical Engineering Department of UFSCar with the purpose of developing the technology required for the production of the cited vaccine. In this context, the objective of this work was to optimize the growing conditions of E. rhusiopathiae to establish a protocol for production of high cellular concentrations, enough to prepare a vaccine against swine erysipelas offering the same or a higher protection level compared to the commercially available formulations. To achieve this goal, the growth kinetics of this microorganism was investigated under different aeration conditions (aerobiosis, anaerobiosis and microaerophilic condition), changes in the medium nutrient s concentration were analyzed, and mice protection tests using the prepared vaccines were performed. The studies about the aeration influence on the microorganism growth and the antigen expression were made using a 4.0 L stirred-tank bioreactor, with an agitation frequency kept between 100 and 400 rpm and air or N2 flow rate of 1.0 L/min. The studies for the improvement of the medium formulation were carried out in flasks incubated at static condition or under agitation of 200 rpm. The vaccines were prepared using medium harvested in both conditions. The temperature was set at 37°C and the initial pH at 8,0 in all experiments. Samples of culture supernatant and from cell extracts made with choline chloride were analyzed by electrophoresis under denaturating conditions (SDS-PAGE) to evaluate the antigen expression. The preliminary electrophoresis results indicated that the antigen production is associated to the cell growth and its expression is favored in the presence of oxygen. Cellular concentrations around 1,8 g/L were reached, in all different aeration conditions employed, using the stirred-tank bioreactor operating with pH automatic control and using the culture medium with nutrients concentrations increased in 50 % from the Feist medium described in literature. The vaccines prepared in aerobic and microaerophilic condition led to higher protection levels in the challenge-exposure tests, and a formulation made from an aerobic culture in bioreactor having a cellular concentration over 2,0 x 109 CFU/mL showed the same immunizing power as the three commercial vaccines used for comparison purposes. Observations about the inhibitory effects of metabolites accumulation and substrate saturation on the microorganism growth pointed the fed-batch as a promising operation mode to produce larger amounts of biomass. Cellular concentrations reached in the experiment ran under these condition were increased around five times.
Eletrodos voltamétricos e amperométricos para a determinação de espécies de interesse farmacêutico
(Universidade Federal de São Carlos, 2007-03-30)
Marcolino Junior, Luiz Humberto
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Fatibello Filho, Orlando
;
https://lattes.cnpq.br/9859737944357808
;
https://lattes.cnpq.br/0495683068319877
The development of modified electrodes by insoluble metal hexacyanoferrates have attracted wide spread attention due to their interesting chemical and electrochemical characteristics. In the first developed work, 20% (m/m) of copper(II) hexacianoferrate was incorporated to a carbon paste for the voltammetric determination of dipyrone. The analytical curve showed a linear response in the concentration range of 9.9 x 10-6 to 2.4 x 10-4 mol L-1 with a detection limit of 8.1 x 10-6 mol L-1 in acetate buffer solution at pH 7.3. In a second work, an anionic exchange resin modified with hexacianoferrate(III) ions was used as modifier material in an MCPE that later was applied in the amperometric determination of paracetamol. The analytical curve was linear in the paracetamol concentration range of 2.0 x 10-5 and 6.5 x 10-4 mol L-1 with a detection limit of 1.6 x 10-5 mol L-1. The use of vanadium complexes has been also intensified in the last years, mainly for its importance in diverse biochemist processes in the human body. In this work, two other methods had been proposed employing an EPCM with VO-Salen complex for the voltammetric determination of dipyrone and ranitidine in pharmaceutical products. The analytical curves for dipyrone and ranitidine were linear in the concentration ranges of 9.0 x 10-6 to 2.8 x 10-4 mol L-1 and 9.9 x 10-5 to 1.0 x 10-3 mol L-1, respectively, with a detection limit of 7.2 x 10-6 mol L-1 for dipyrone and 6.6 x 10-5 mol L-1 for ranitidine. Finally, the use of carbon paste electrodes, modified or not, coupled to the FIA system with amperometric detection has been also widely explored due to be an extremely versatile alternative. In this work, a procedure for the captopril quantification in pharmaceutical formulations was developed using an amperometric flow cell connected to the FIA system. The method was based on the reaction of the captopril oxidation, under action of an applied electric potential. Parameters such as pH and support electrolyte, and the FIA system parameters had been evaluated in order to get the best results. The analytical curve was linear in the captopril concentration range from 2.0 x 10-4 to 7.5 x 10-3 mol L-1, with a detection limit of 9.6 x 10-5 mol L-1 and a sampling frequency of 42 h-1.
Um modelo de risco proporcional dependente do tempo
(Universidade Federal de São Carlos, 2007-03-30)
Parreira, Daniela Ribeiro Martins
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Louzada Neto, Francisco
;
https://lattes.cnpq.br/0994050156415890
;
https://lattes.cnpq.br/7950899123142965
Survival data analysis models is used to study experimental data where, normally, the variable "answer"is the time passed until an event of interest. Many authors do prefer modeling survival data, in the presence of co-variables, by using a hazard function - which is related with its interpretation. The Cox model (1972) - most commonly used by the authors - is applicable when the fail rates are proportional. This model is very flexible and used in the survival analysis. It can be easily extended to, for example, incorporate the time-dependent co-variables. In the present work we propose a proportional risk model which incorporates a time-dependent parameter named "time-dependent proportional risk model".
Prevenção primária de abuso sexual : avaliação da eficácia de um programa com adolescentes e pré-adolescentes em ambiente escolar.
(Universidade Federal de São Carlos, 2007-03-30)
Padilha, Maria da Graça Saldanha
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Williams, Lúcia Cavalcanti de Albuquerque
;
https://lattes.cnpq.br/6962646759651464
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https://lattes.cnpq.br/7660914735608378
This study was aimed at evaluating the efficacy of a child sexual abuse primary prevention program conducted in the school setting. The first part of the study was aimed at verifying low-income parents' conceptions about child sexual abuse. Sixtythree parents residents of the school's community where the prevention program was done participated of the study. Participants answered a Questionnaire on Child Abuse Conceptions. Results showed that parents where knowledgeable about child sexual abuse, although some of their conceptions could be altered to increase their child protection of at risk situations repertoire. The second part of the study had as a goal to evaluate a child sexual abuse primary prevention program in the school setting of the same community involved in the initial part of the study. Sixty two grade 6 students (30 female and 32 male) of a rural community in the Metropolitan area of Curitiba, Paraná participated o the intervention. The second part of the study had the following sequence: a Pre-Test (conducted one week prior to the intervention), Intervention (12 weekly sessions), a Post-Test (after the intervention), and a Follow-up (conducted 18 months after the program). A Questionnaire on Child Sexual Abuse was given in three of the occasions mentioned above. The 10 intervention sessions of one-and-a-half hour each involved social skills training, discussions on sexuality, discrimination of abusive situations, and self-protection skills training. The repertoire to be installed involved discrimination of risk, responding in an assertive way to the offender, leaving the situation and reporting it to a reliable adult. Analysis of students´ group performance in the three phases of the study indicated an increase after the intervention, which was maintained after 18 months, although with a small decrease. Of the four factors measured by the Questionnaire knowledge on sexual abuse, discrimination of at risk situations, saying no , and leaving the situation quickly, and reporting the abuse to a reliable adult the factor on sexual abuse knowledge had significant increases in Post- Test and Follow-Up. General performance was significantly different, pointing out to the efficacy of the intervention as measured by the Questionnaire. In general, data seems to indicate an improvement in students´ repertoire of self-protective skills in situations at risk of child sexual abuse. The promising results point out to the feasibility of school prevention of child sexual abuse in the school setting.
Influência das condições operacionais na formação e remoção de tortas de filtração de gases
(Universidade Federal de São Carlos, 2007-03-30)
Tognetti, Érica Rodrigues
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Aguiar, Mônica Lopes
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https://lattes.cnpq.br/0431688649128529
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https://lattes.cnpq.br/3499359795098626
The present work aims to evaluate the influence of some operational variables on the filtration process and cake detachment, and also the patchy cleaning phenomenon. The studied conditions were maximum pressure drop, 20, 40 and 60 cmc.a., filtration velocity, 5 and 10 cm/s, cleaning velocity, 10 and 15 cm/s and thickness of the cake. Phosphoric rock dust with Stokes diameters of 4,5 µm was used as powder material. The filter medium used was acrylic, polyester and polypropylene needlefelt. To characterize the cleanness of the fabric, it was used the technique to take a photograph of the filter after each cycle of cleanness, getting images of the partial detachment of the cake. These images of cycles 1, 2, 3, 5 and 10 had been studied and analyzed through analytical software of images, the Image-Pro Plus. The efficiency of regeneration and the size of the regenerated areas of the filter had been analyzed. The results showed that the residual pressure drop was higher for thicker cakes. The higher cleaning velocity was not necessarily the one that offers better cake removal. Concerning the patchy cleaning phenomenon, total area removed did not present a defined behavior with the number of cycles. The results also showed that acrylic needlefelt is the best one to this process. This filter medium requires regeneration less frequently as it presents a lower pressure drop tax. As consequence the process is more economic and the filter medium can me used for longer periods of time.
Justificando intervenções: a política externa norte-americana e a América Latina
(Universidade Federal de São Carlos, 2007-04-02)
Merendi, Izaura Peghim
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Villa, Marco Antonio
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https://lattes.cnpq.br/2211983389134451
This study aims to demonstrate that the United States of America have always tried to dissimulate their interventions in Latin America. Ever since the independence of Latin-American colonies, the U.S. have been trying to justify their expansionism in the region. To the end of the Cold War , the interventions were justified by the rhetoric of the contention of external threatens European recolonization and Soviet communism with the end of the bipolar conflict, the domination has won a new justification, i. e., the necessity of keeping the order and promote democracy. Thus, hegemony began to be exerted through the North-American capacity of imposing its values democracy and free trade in the region.
Novos mecanismos de coordenação no mercado do trigo brasileiro no período de 1990/2005.
(Universidade Federal de São Carlos, 2007-04-02)
Perosa, Bruno Benzaquen
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Paulillo, Luiz Fernando de Oriani e
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https://lattes.cnpq.br/9919942357089937
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https://lattes.cnpq.br/7008340716950413
The wheat chain, as most of Brazilians agri-food chains, has had deep changes on the institutional environment since 1990, when the Brazilian economy was open and most of the industry sectors were deregulated (the State diminished the regulation). The effects of those changes were amplified by the MERCOSUR agreement. As a consequence, a complete change of the ways coordination on the Brazilian wheat market takes place was noticed. The relations between wheat producers and milling units, which before 1990 was intermediated by State agencies like Banco do Brasil and DTRIG, where totally transferred to the private sector. The cooperative system and the representative associations, which used to focus on the political representation, had to adapt their work and offer different services for their members. The analysis of the new forms of relationships on this market after 1990 shows that the regulatory framework which shaped the activities of the sector for many decades had a strong influence on the new dynamics of coordination after the State reduced the intervention. This study aims to analyze how the Brazilian wheat market was regulated before and after 1990, highlighting the impact of institutional environment at different times on the dynamics of the relationships and coordination among those actors playing on the market after 1990. With this goal, this study will refer to theoretical approaches linked to the neo-institutionalism, as the Transaction Cost and Measurement Economics, the Network Analysis, and the Policy Networks. These references will support the preparation of indicators to explore the vertical coordination (among actors of different tiers) and horizontal coordination (among actors of the same tier).
Efeitos da abertura do mercado externo em arranjos produtivos locais de base agroindustrial: o caso dos produtores de mamão do Espírito Santo.
(Universidade Federal de São Carlos, 2007-04-02)
Santos, Fabio Lyrio
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Nantes, José Flávio Diniz
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https://lattes.cnpq.br/1900976112613026
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https://lattes.cnpq.br/6210663527994961
In the last years, public and private agents have concentrated efforts and placing resources in action programs to the local productive arrangements (LPAs), organizational formations that allow the micro and small-sized enterprises (MSEs) survival and growth. The rescue of the MSEs role in the regions and countries development process happens in a time of resetting of the economic, social and political systems evolution spaces, remodeling of the production systems with the collective valuation, globalization and local protagonism. One of the main goals of these action programs is the insertion of MSEs in the international markets. Thus, the economic growth of firms and the sustainable development along the production chain should be bigger. The object of study of this research was the enterprises of the Espírito Santo State LPA of papaya, mainly centered in Linhares city. This region has little more than 200 producing properties and a set of linked entities that include education, research and technical institutions, financing agencies, trade associations, category entities and others support institutions. The aim of this research was to identify the collective benefits generated to the arrangement after the opening of the United States market, in 1998, and to verify how these benefits were individualized and absorbed by the local firms. The research was carried out under qualitative approach and the used method was the case study. Twenty five interviews were carried out, being fifteen with MSEs and small farm households, five with larger companies, and others five with support institutions. The results evinced that the exportations stratified the firms in two groups: one with the medium and large-sized exporting firms and another one with the non-exporting MSEs and farm households. Despite this, the generated benefits were not restricted to the exporting firms group, being spread to the other firms and links of the arrangement. The exportations increased the economic, social and environmental sustainable of the local papaya cultivation and stimulated the adoption of product and processes innovations, improving the competitiveness of firms and profiting its economic growth. The planted area, the production volume and the amount of companies enlarged, as well as the job offer and the income.