Browsing by Issue Date, starting with "2012-04-30"

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Catalisadores de Mo suportados sobre sílica, sílica-titânia ou sílica-zircônia promovidos por Co ou Ni: avaliação do método de preparação e da composição do suporte na atividade para HDS
(Universidade Federal de São Carlos, 2012-04-30)
Silva Neto, Alano Vieira da
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Urquieta-González, Ernesto Antonio
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https://lattes.cnpq.br/9367351766560198
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http://lattes.cnpq.br/2389975677904655
Hydrodesulfurization (HDS) catalysts containing Mo, NiMo or CoMo were supported on silica, silica-titania and silica-zirconia. These supports were synthesized by the sol-gel method, using citric acid as an agent to pore formation and to complex Ti and Zr. The incorporation of the precursor salts of the active phases was done during the sol-gel preparation of the different supports (in situ addition) or by impregnation using citric acid as chelating agent. The catalysts in the oxide form were characterized by atomic absorption spectroscopy (AAS), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), temperature-programmed desorption of NH3 (TPD-NH3), Fourier Transform infrared spectroscopy (FTIR), thermogravimetric (TG) and differential thermal analysis (DTA), N2 adsorption/desorption, diffuse reflectance UVVis spectroscopy (DRSUV-Vis), temperature-programmed reduction with H2 (TPR-H2) and evaluated from 240 to 300°C in the HDS of thiophene used a model molecule. Supports and catalysts showed high specific surface area and pore volume as result of the use of citric acid in the preparation of the respective sol-gel mixtures. From XRD data was evident that the citric acid promoted a high dispersion of Ti and Zr in the silica framework, because was not observed XRD peaks related to separated phases of those metals. The XRD patterns of the catalysts did not show diffraction peaks related to other species or oxides of Mo, Co or Ni, behavior that was attributed to the high dispersion of these metal species in the different supports that was confirmed by DRSUV-Vis and H2-TPR. The HDS reaction of thiophene on NiMo and CoMo catalysts showed a higher activity for the first ones, which were more active when supported on silica or silica-zirconia. This result was attributed to the higher interaction of Ni with Mo, which generated a higher degree of reducibility of the Mo species, facilitating the subsequent sulphidation process and consequently favoring the formation of the NiMoS phase, which is indicated as the main responsible of the catalyst activity in the HDS process. The lower activity of the catalysts supported in situ on SiO2-TiO2, was related to the formation of separated phases of Mo and Ni or Co sulfides, which are less active to the HDS reaction.
A memória assombrada: um estudo da autorrepresentação no documentário animado Valsa com Bashir
(Universidade Federal de São Carlos, 2012-05-02)
Souza, Maria Ines Dieuzeide Santos
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Gamo, Alessandro Constantino
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https://lattes.cnpq.br/8208629144314123
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https://lattes.cnpq.br/1329886287406570
This work aims to discuss processes of self-representation in animated documentaries, from the analysis of the film Waltz with Bashir (Ari Folman, 2008). With this analysis, it seeks to understand modes of articulation between the field of documentary and animation, using elements of both as a possibility of self-representation in films that are related to the shared historic world. For this purpose, it develops a reflection on the establishment of different perspectives in the field of documentary studies and the ways available for animation to create representations. In addition, it dialogues with the various historical and conceptual approaches about the animated documentary, developed significantly over the past fifteen years. Finally, it develops a critical analysis of what Bill Nichols (1994) calls performative documentary and the considerations of Michael Renov (2004) about documentaries that deal with the autobiographical, to understand the animation as a way to put the director in history and establish a continuity with the past, weaving relationships between elements of documentary and animated images that provide other senses to the reported.
Semigrupos gerados pelo p-Laplaciano e um estudo do limite p→∞
(Universidade Federal de São Carlos, 2012-05-02)
Hurtado, Elard Juárez
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Gentile, Cláudia Buttarello
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http://lattes.ufscar.br/servlet/jpkFltGeral.cFltVisualizador?pTipoIdentif=1&pTipoRelat=1&pNroIdPessoa=147&pCodOrigemCur=0
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https://lattes.cnpq.br/0455290275199042
We study the problem: (2) _∂tup − Δpup = 0, (0,∞) × Rd up(0, x) = g(x), {t = 0} × Rd ∞ > p ≥ d+1, where the initial data up(0, x) = g(x) are Lipschitz continuous, non-negative and it have compact support. Solutions of this problem provide a simplistic model for collapse of an initially unstable sandpile . We regard the limit up when p→∞as a solution for instantaneous mass transfer problem governed by Monge-Kantorovich theory. We study the case d = 1 for which we obtain explicit solutions. Keywords: p-laplacian, Monge-Kantorovich Theory, Monotone operator theory.
Monitoramento e modelagem de um poço de infiltração de águas pluviais em escala real e com filtro na tampa
(Universidade Federal de São Carlos, 2012-05-03)
Angelini Sobrinha, Lôide
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Barbassa, Ademir Paceli
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https://lattes.cnpq.br/2979012440240781
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https://lattes.cnpq.br/8800827332228128
The infiltration well as a Best Management Practices (BMPs) stands out because it requires small areas for its implementation an it´s fully applicable to urban lots. This paper presents an experimental study of an infiltration well built in real scale at Universidade Federal de São Carlos SP with the objective of evaluation its performance as a BMP in the control of stormwater runoff and the removal of suspension materials. The soil was characterized as sand loam, and infiltration capacity between 93,98 and 19,24 mm per hour, these values were obtained thought field tests by the inverted well method and the double ring infiltrometer method respectively. The Rain Envelope Method was used for sizing, and the well was intentionally sized at odds with the standards of safety project. With the electronic equipment s and the precipitation measures were monitored 22 real rain events and simulated rain events, during 11 months of the well operation. During this period there was no record of extravasation of the well, representing an efficiency of 100% in reducing the runoff. After eight months of the well operation tests were conducted about the permeability of the geotextile, and the amount of powder material in the aggregate materials content in the well, in other words, the gravel and sand making up the filter cover, and also the qualitative parameters: apparent color and turbidity. The geotextile showed permeability reductions of 50,7%, 7,7% and 21,2% in the samples from the background, the wall sides, and the cover of the well respectively. The well sand filter cover retained 34,8% of fines, while the gravel retained 0,13% for the same period. About the well efficiency analyses in the removing the parameters apparent color and turbidity, it was showed that it wasn t characterized as a treatment unit of these parameters, this fact is due to the quality of water which represents the roof inlet structure. For modeling the Puls method, the saturated soil permeability defined as K non optimized was calculated for each monitored event (Kno). Kno was adjusted by non-linear regression (K optimized - Ko) for each monitored event, restricting the parameters based on values obtained in the field tests, thus for each monitored rain event was obtained two moldings for the constant values of K (Kno and Ko). The model representativeness was evaluated by the coefficients of determination ranging from 0,68 to 0,98 for the events modeled with values from Ko and 0,02 to 0,76 for the Kno, being the Ko most representative for the modeling of Puls.
Estudo químico de Alternaria alternata patótipo tangerina em meio artificial e na interação com Guignardia citricarpa
(Universidade Federal de São Carlos, 2012-05-03)
Prieto, Kátia Roberta
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Silva, Maria Fátima das Graças Fernandes da
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https://lattes.cnpq.br/0457632122660653
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https://lattes.cnpq.br/7822996803856391
The study of phytopathogenic fungi Alternaria alternata has improved the chemical of this micro-organism. The fungus was grown up in large scale incubated in rice medium for 26 days. After grown period was interrupted an extract of the microorganism was made and fractionated using several chromatographic techniques, obtaining 11 different classes of metabolites which are: alternariol monomethyl éter, alternariol, altertoxin, altenuen, altenusin, uridine, uracila, 5 -inosil, ergosterol, peróxido de ergosterol e triglycerides. Also, a study was made via LC-MS in order to identify some toxins produced by A. alternata like a pathogen of citrus, and it was possible to identify four of these. Other research via LC-MS was the study of co-cultivation of the fungus A. alternata, the causal agent of alternaria brown spot, and Guignardia citricarpa, the causal agent of citrus black spot. In this study was possible to observe the variation in concentration of alternariol and thenuazonic acid, mycotoxins produced by A. alternata when this fungus is in contact with G. citricarpa. The study identification of the volatiles produced by A. Alternaria in different ways contributed significantly to improve the knowledge of their chemistry. Once, the A. alternata is a pathogenic fungus of 'Murcott' a study was performed via scanning electron microscopy (ESEM). Thus it was possible to observe the penetration of this fungus by stomatal cavity of young leaves of citrus. In order to search for natural inhibitors to control the disease, were tested several classes of natural products against the A. alternata, and some alkaloids, a xxvi coumarin, a xanthyletin, and a flavonoid substances showed Higher inhibition of mycelial growth, spore germination and appressorium formation. With the aim to obtain information on natural inhibitors were tested metabolites produced by A. alternata opposite and G. citricarpa, the results indicated that alternariol monomethyl ether and alternariol were substances that had a potential fungistatic against the causal agent of citrus black spot.
Novos modelos de sobrevivência com fração de cura baseados no processo da carcinogênese
(Universidade Federal de São Carlos, 2012-05-03)
Borges, Patrick
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Rodrigues, Josemar
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https://lattes.cnpq.br/4359114733394761
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https://lattes.cnpq.br/1282820278584540
In this dissertation we propose new models for survival with cure fraction to describe the biological mechanism of the event of interest (cancer) in studies of carcinogenesis in the presence of competing causes latent independent or correlated. The formulation of new models is based on stochastic modeling of the occurrence of tumors through three stages: initiation of a tumor not detectable, promotion and progression of the tumor to a detectable cancer. These models allow a simple pattern of the dynamics of tumor growth, and incorporate into the analysis features of the stage of tumor progression that is not possible in most survival models with cure fraction commonly used. For the proposed models, the inferential process was discussed in terms of classical and Bayesian point of view. Simulations studies were conducted in order to analyze the asymptotical properties of the classical estimation procedure. Real data applications demonstrate of use of the models.
Dos modelos classificatórios tradicionais na ciência da informação à folksonomia: um enfoque discursivo
(Universidade Federal de São Carlos, 2012-05-03)
Reis, Lívia de Lima
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Severo, Cristine Gorski
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https://lattes.cnpq.br/3566456623347060
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https://lattes.cnpq.br/6762822437892356
This research is about the models of organization and classification of information in the field of Librarianship and Information Science, prioritizing a more dialogical form of organization of information, the folksonomy. Initially, we aim to understand, through the archaeological and genealogical Foucault s methods, the conditions of possibility of two different classification procedures, one traditional and other contemporary. For doing this, a contextualization of the field of knowledge called Librarianship and Information Science will be presented, as well as the models of information organization used, and this field s tendencies. In sequence, considering the theoretical categories derived from the works of Bakhtin and Foucault, we will analyze different forms of classification of knowledge and of language concepts that underlie them. Some of the results indicate that there is a new form of power implied in the social practice of folksonomy, understood as one collaborative tool to organize the information in the Web 2.0, in which the subjects themselves act in the regulation of discourse and in the creation of new concepts. The analytical reflections illustrate that the subjects act in a responsive way on the internet by manipulating linguistic features through the creation of tags related to different semantic universes. We also intended to locate points of resistance focusing on the linguistic and discursive practices of folksonomy as a locus of social change. The Web 2.0 works based on a dynamics of incitement and pleasure which reinforces the flow of information and online relationships, thus, folksonomy works like a type of social network which allows relationships among the subjects with the same interests through the use of a creative, collaborative and personalized way of content organization. Regarding the current trends of studies in the field of Librarianship and Information Science, folksonomy has functioned as a tool to assist the approaches that take into account the users and context of use of information in documentary languages.
Adubação verde em cultivo consorciado para produção de pimenta-biquinho (Capsicum chinense) em sistema orgânico
(Universidade Federal de São Carlos, 2012-05-04)
Dedini, Gabriel Ferraz de Arruda
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Fontanetti, Anastácia
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https://lattes.cnpq.br/3598362104615834
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https://lattes.cnpq.br/9879025761412751
The cultivation of peppers occurs in practically all regions of the country and is one of the crops that better integration exerts between the small farmer and the agribusiness. Thus it is desirable to develop technologies that combine the production of peppers with the conservation of natural resources, allowing recovery of soils and the economic stability of families that depend on this system. The aim of this study was to evaluate the effect of species and managements of green manure on mineral nutrition, growth and productivity of pepper-pout (Capsicum chinense). The experiment was conducted in the agricultural year 2010/2011 at the Center for Agricultural Sciences, UFSCar, Araras-SP. The treatments were a combination between green manure species: bean (Canavalia ensiformis DC) and sunn-hemp (Crotalaria juncea L.), and three forms of management of green manure in consortium with pepper-pout: green manures grown throughout the cycle of pepper, green manures managed (cut) in the flowering of pepper (75 days after transplanting, DAT), green manures handled at the first harvest of the fruits of pepper (90 DAT). And one more treatment (control), only with the pepper-pout plants, with mineral fertilization. The results showed that the species Crotalaria juncea and bean-pig conducted in consortia with plants of pepper-pout, when handled at 75 days after transplanting of vegetable crop, caused an increase in height and canopy diameter of pepper and fruit yield similar to the cultivation of pepper with exclusive use of mineral fertilizer. Overall, the releases of nutrients from biomass of green manure followed the nutritional demand of pepper plantspout, regardless of the time of cutting. But the bean-pig conducted throughout the cycle of pepper reduced fruit yield, probably by competition established between green manure and pepper.
Fenologia da floração e rede de interação entre abelhas e plantas em uma área em processo de restauração florestal localizada em Araras-SP
(Universidade Federal de São Carlos, 2012-05-06)
Santos, Jussara Fernanda
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Nocelli, Roberta Cornélio Ferreira
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https://lattes.cnpq.br/8934724759636382
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https://lattes.cnpq.br/0466415454233744
The most widely used in forest restoration projects is heterogeneous planting seedlings. This methodology was used in an area of one hectare in the restoration process implemented in 2009 on the campus of UFSCar Macaw. High values are invested in financial forest restoration especially when there is a need for planting seedlings, so the assessment and monitoring of restoration projects are legitimate concerns. Considering the importance of awareness of the availability of floral resources and ecological areas restored, and the importance of bees as pollinators in natural and agricultural areas, the overall objective of this study was to identify the pattern of flowering in the area in the restoration process, considering the period of three years after establishment. The specific objective was to evaluate the use of woody species by the community of bees visiting the flowers. To assess the availability of floral resources utilized a method of presence and absence and intensity index Fournier. Observations were made on flowers to collect the bees. It was built a network of qualitative interaction between species. This work was divided into two chapters, the first chapter deals with the characterization of the flowering phenology and plant species studied. The second chapter presents the richness of bee floral visitors observed during 2011 and describes the resources acquired by them at the time of visit, and presents the network of interactions among species. The phenological study enables to visualize the availability of flowers at certain times of the year, seven species were found planted with flowering, the period with greater timing and intensity was between January and March, the hottest season of the year and wet. There was a flowering woody species regenerating in the Solanum lycocarpum that in the colder months and dry was important for maintaining flowers in the area. We identified 20 species of bees that collected nectar and pollen. The network of interaction was 42.5% connectance and shown to be nested with heterogeny and indices T equal to 13.80 and NODF equal to 64.9. The two approaches are very important tools for monitoring and evaluating the availability of floral resources for bees visiting areas in the process of forest restoration.
Falar e calar no teatro brasileiro contemporâneo: uma análise discursiva da obra de Plínio Marcos (1958-1993)
(Universidade Federal de São Carlos, 2012-05-07)
Leppos, Denise Aparecida de Paulo Ribeiro
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Piovezani Filho, Carlos Félix
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https://lattes.cnpq.br/1677609008094603
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https://lattes.cnpq.br/4621333559718511
La investigación propone un análisis del discurso teatral brasileño contemporáneo como expresión de las formaciones ideológicas vinculadas ciertamente a las formaciones discursivas. Más exactamente, el trabajo consiste en un enfoque discursivo de algunas piezas del dramaturgo Plínio Marcos. El corpus tendrá las siguientes obras: Barrela; Dois perdidos numa noite suja; O abajur lilás; Querô: uma reportagem maldita; O assassinato do anão do caralho grande, A dança final y Transas das sextas-feiras. El trabajo enfocará, en un primer momento, algunos aspectos de la historia teatral en que la relación teatro/política sobresalga, porque el teatro no es apenas para ser escenificado como espectáculo, sino una manera de compromiso y crítica social. Las obras presentan lo que se consideraba lenguaje coloquial, vulgar, grosero y subversivo en la época de la Dictadura Militar. Los enunciados, en los que ese tipo de lenguaje se materializa, producen efecto de sentido por medio de las formaciones discursivas en las cuales están inseridos y de sus condiciones de producción, atravesados por el contexto autoritario de las décadas de 1960/70. Por lo tanto, proponemos un análisis basado en los principios del Análisis del Discurso de línea francesa - Michel Pêcheux y su grupo-, para el cual las formaciones discursivas concebidas en un paradigma marxista derivan de formaciones ideológicas , de modo a aparecer en el discurso la lengua y la historia. Observaremos, a partir de eso, la presencia de los silencios/silenciamentos promovidos por la censura y el ambiente autoritario de la época utilizando la teoría de Eni Orlandi en el discurso de algunas piezas del Plínio Marcos, en las que el silencio es la propia condición de sentido, o sea, "el silencio es el indicio de una instancia significativa (ORLANDI, 2009, p. 68), determinando por medio de las Formaciones Discursivas lo que puede e debe ser dicho. Además, realizaremos un análisis de los tabúes linguísticos existentes en algunas de las obras citadas de Plínio Marcos, en el cual el objetivo es observar los efectos de sentido (producción de la verdad) que el coloquialismo causa para la formación de las imágenes del sujeto en una interfase lengua/discurso y sociedad-. Para alcanzar el objetivo de nuestro estudio, optamos por dividirlo en los siguientes capítulos: I) Lo dramático como institución y crítica social: el teatro en escena, II) Los silenciamientos de una formación discursiva: la censura en escena y III) Por un enfoque discursivo del registro informal de la lengua: efectos de sentido del lenguaje coloquial en Plínio Marcos.
Estado de conservação e dados de distribuição da fauna troglóbia brasileira com propostas de áreas prioritárias para proteção
(Universidade Federal de São Carlos, 2012-05-08)
Gallão, Jonas Eduardo
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Bichuette, Maria Elina
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https://lattes.cnpq.br/8453043393798516
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https://lattes.cnpq.br/2036937156228912
In this paper, we analyzed the Brazilian subterranean fauna, in relation to the actual conservation status, considering the knowledge of its biodiversity, threats to the conservation of this environment and the current legislation relevant to our speleological heritage. The work was divided into chapters, for publication purposes. In chapter I, we present faunal lists of Brazilian troglobitic species (with formal descriptions and not yet described, totaling a minimum of 252 species), their distributions, besides the main causes of destruction / threat of subterranean realm. Still, we propose the Serra do Ramalho, southwestern Bahia state, as a priority area for conservation, since the pressure mining and other factors could decimate the caves of this region biologically important. In chapter II, we discuss about the difficulties of species inclusion in the Red List, and its effective protection, with a case study of Brazilian troglobitic fishes. Problems such as the taxonomic impediment, geographical variations and inclusion only of binomials (Genus species) are discussed. In chapter III, we elected a new hotspot for neotropical subterranean fauna, quartzitic caves from Igatu, in the center region of Chapada Diamantina, central Bahia state. In addition, we tested one of the items of the Instrução Normativa No. 2 of Decreto 6640, which legislates about environmental impact studies of Brazilian caves and we demonstrate that there is not any protectionist law for our subterranean environment.
Found-footage film - documentário de arquivo: o cinema de Emile de Antonio e uma análise de In The year of the pig
(Universidade Federal de São Carlos, 2012-05-08)
Altafini, Thiago
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Gamo, Alessandro Constantino
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https://lattes.cnpq.br/8208629144314123
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https://lattes.cnpq.br/6662285739178985
A conceptual overview about documentaries made from archival footage, named foundfootage films. The main reference for the analysis of cinematographic production for the period prior to the year 1960 is the book Films Beget Films, published in 1964 by the American researcher Jay Leyda. This essay seeks to complement the research of Jay Leyda addressing aspects of the biography and work of American filmmaker Emile De Antonio, pointing out the relevance of your audiovisual production in the field of documentary from the use of archival material. The documentary In The Year of the Pig (1968) and his fragmentary, enigmatic and somewhat didatic historical narrative, are subjected to analysis. The goal of this study is an approximation of the De Antonio`s narrative with the concept of historical allegory in the film, according to Brazilian researcher Xavier, based on the ideas of Walter Benjamin on modernity and the role of allegory in the process of reinterpreting history and culture.
O estágio na licenciatura em matemática : um espaço de formação compartilhada de professores
(Universidade Federal de São Carlos, 2012-05-09)
Andrade, José Antônio Araújo
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Passos, Cármen Lúcia Brancaglion
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https://lattes.cnpq.br/8887795744073669
The main objective of this research was to analyze the potential of a work shared between current and future Mathematics teachers. The focus of this research is the learning of teaching, which is established by the relation with the knowledge, or in this case, with the knowledge mobilized in the context of pedagogic practices. The following problematic were formulated: which knowledge is mobilized and/or (trans)formed on learning of teaching in a context of shared work? Which elements act or make possible the learning of teaching and professional development in a context of shared work? The option was to investigate an experience of shared work through written or oral narratives. Data collection was done during the school year of 2009. Twenty one students of graduation, ten collaborator professors and the advisor/researcher took part in this research. Ten work teams were constituted, which compounded the investigation scenario. The following aspects were analyzed: the reflexive process of graduation students during their participation and learning while teaching Mathematics in the scholar context, the possibilities and potential of collaborative work for the teacher formation through the internship and for the consolidation of the teaching profession, the knowledge and reflection initiated in this process, and the contributions for the supervised internship for the continuing formation and for Scholar Mathematics ideas of these actors. The analysis of the content allowed us to establish four meaning units: professionalization; learning of teaching; tensions and contradictions, and cultural confrontations (relationship university school). It is necessary to consider that from this four meaning units, the first two were took as categories of analysis. In these units it was possible to note the formation potential on the constitution of multiple learning. An identity process was established between the trainees and the profession in the reflection moments about practices with which they started interacting. Diverse knowledge was mobilized, which culminated on the learning related to: curriculum management in Mathematics (classes planning and their conduction guided by an investigative and problematizing posture; the meaning of evaluative processes; the importance of interactions in classroom for the establishment of a learning environment for the students). Moreover, it was possible to identify important aspects of the professional development of the supervisor teacher, which characterize the beginning of her self-management in relation to her formation process. This research allowed us to glimpse a new course for internship activities in which the relationship between university and school is strengthened in order to look for possibilities or strategies that look for the better interaction among the subjects of these activities, thinking that the evolution of teaching professionalization depends on an initial formation that provides autonomy to the subject management of its own professional practices.
Estudo da ruptura dielétrica durante a anodização de zircônio e o seu efeito sobre o processo de dopagem anódica de ZrO2
(Universidade Federal de São Carlos, 2012-05-09)
Santos, Janaina Soares
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Souza, Ernesto Chaves Pereira de
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https://lattes.cnpq.br/1505400360366643
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https://lattes.cnpq.br/5802009429183443
In this work the fundamental aspects of electrolytic breakdown in ZrO2 films were investigated. The electrolytic breakdown is a type of dielectric breakdown that occurs during galvanostatic growth of anodic oxides. To perform this investigation, the study was divided in two parts: (i) the modification of ZrO2 films by anodic doping and (ii) characterization of the electrical discharges (sparks) that appears on the electrode surface during zirconium anodization. The anodic doping study aimed to monitor the system and analyze the influence of current density, temperature and dopant concentration on the electrochemical, morphological and microstructural properties of ZrO2 films doped with calcium and niobium ions. The factorial design technique was used to optimize the number of experiments and quantify the effects of experimental variables on the responses. The results showed that all variables influenced the electrochemical response, leading to changes in morphology and microstructural properties of the ZrO2 doped films. This result was observed because these variables can affect the mobility of ionic species, ionic transport inside the oxide, the electrolyte resistivity and the dissolution process of the oxide. The spark characterization study aimed to investigate the evolution of electrical discharges during the experiment and correlate them with the processes observed in the anodization curve of zirconium. Hence, the electrode surface was recorded during the experiments using a high definition and high speed video camera. The image analysis allowed the calculation of the size, quantity and lifetime of the sparks discharges. Due to the enormous amount of data, it was necessary to develop a new methodology to analyzing the results. The methods used were based on techniques of imaging processing and multivariate data analysis. The use of these techniques coupled to electrochemical ones provided new insights that elucidated some aspects of the breakdown phenomenon. Furthermore, it provided guidelines for the implementation of future work.
Determinaçâo da toxicidade tópica e oral do inseticida fipronil e efeitos de suas doses subletais no comportamento de abelhas sem ferrão Melipona scutellaris (Latreille, 1811)
(Universidade Federal de São Carlos, 2012-05-09)
Lourenço, Clara Tavares
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Nocelli, Roberta Cornélio Ferreira
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https://lattes.cnpq.br/8934724759636382
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https://lattes.cnpq.br/4674980501476375
Melipona scutellaris bee, known as "uruçu" belong to the tribe Meliponini, popularly called stingless bees. This bee is endemic in northeastern Brazil and is distinguished by its ease of domestication and management, significant honey production and potential for pollination in greenhouses and open field. The insecticide fipronil acts on the insect nervous system by blocking the chloride channels through of the receptors gamma-aminobutyric acid (GABA) and glutamate (GluCl). Widely used in Brazil and more than 70 countries is considered highly toxic to bees, which is why its use was banned in France in 2004. Toxicological studies of pesticides to bees use mostly as a model species A. mellifera bee, which sublethal doses of fipronil can cause behavioral changes related to core tasks for the colony, such as feeding and foraging. However, differences in susceptibility between species of bees to insecticides may expose native bees there is a greater risk. The aim of this study was to determine the topical LD50 and oral LC50 of insecticide fipronil for stingless bee M. scutellaris and evaluate the effects of fipronil sublethal doses and concentrations in the locomotor activity and in the Proboscis Extension Reflex (PER) these bees. Foragers were collected in the output of three different colonies, consisting of three repetitions with ten bees each and they were placed in plastic pots of 250 mL. Bees subjected to topical treatments were anesthetized with CO2 and received 1.0 μL insecticide solution on pronotum with previously established doses (0.0, 0.5, 1.0, 1.5, 2.0, 2.5 and 5.0 ng of fipronil / μL solution), applied with a repetitive automatic micropipette. Bees subjected to oral contamination received sucrose solution contaminated with concentrations of fipronil determined previously (0.0, 0.005, 0.01, 0.03, 0.05, and 0.5 ng a.i./ μL sucrose solution) for 24 hours. The insecticide fipronil was considered highly toxic to these bees, both topically and orally. The topical intoxication resulted in a LD50 (48 hours) was 0.41 ng / bee (4.1 ng / g bee). The oral contamination resulted in a LC50 (48 hours) was 0.011 ng / μL of sucrose solution or, considering the amount of food they forage M. scutellaris consume daily in an oral LD50 of 0.6 ng a.i. / bee. The topic sublethal dose 0.05 ng a.i./bee and oral sublethal concentration 0.0011 ng a.i./ μL sucrose solution were cause significant changes for the locomotor activity these bees. The PER don't was a functional methodology for M. scutellaris bees. Results show that the bee M. scutellaris is more sensitive to fipronil than A. mellifera and that fipronil sublethal dose and concentrations affected the locomotor activity these bees.
Internet e campanhas eleitorais: experiências interativas nas cibercampanhas presidenciais do Cone Sul
(Universidade Federal de São Carlos, 2012-05-09)
Iasulaitis, Sylvia
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Azevedo, Fernando Antonio Farias de
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https://lattes.cnpq.br/4226275371443693
In this thesis we develop an analysis aiming to understand the new formatting of politics in the era of Web 2.0. The overall objective was to investigate "if" and "how" the Internet's potential for human interaction was used by the candidates and coalitions in recent presidential campaigns in the Southern Cone and "if" and "how far" the interactive tools on websites electoral were used to strengthen ties with the electorate during political campaigns and increase the quality of democratic processes. In this thesis we seek to allow two levels of analysis: the formal structure of the website and political action that it develops. We analyze the logic of the candidates' campaign coordination in the use of discussion forums for government proposals, the constraints and incentives to encourage participation of ordinary citizens and the level of control exercised, and on the other hand, the way they interacted with Internet campaigns, with candidates and each other from these tools, the form and content of discursive exchanges held there and the nature of the proposals that resulted from this interaction. We start from the assumption that the availability of online discussion forums create an opportunity structure that can increase the possibility of political action of ordinary citizens to communicate their preferences, perform inputs, participate in the construction of political projects, as well as compel the candidates to conceive with more clearly their political platforms. However, the type of product is the result of the design of the interface and how the Internet and using the candidate technology, rather than a pre-determined by it, ie, depends on how the rules are articulated objective, strategies election, the political interest and the ability of the actors involved. We tested six corollaries specific empirical contexts and concrete objects of our investigation were the platforms for discussion and collaborative construction of government programs of four presidential candidates from Argentina, Chile and Brazil during the 2007 elections, 2009 and 2010, respectively, and the corpus of empiricalresearch in 2727 totaled posts analyzed. For purposes of this study, we performed a composition techniques that resulted in a specific methodological apparatus, including observation of interactions mediated by the computer, data collection and content analysis. The model consists of a first effort to develop a methodological research strategy discussion forums established in the electoral environment of websites. The evaluation of the quality of the discussions was undertaken according to eight dimensions of analysis based on methodological parameters DQI - Discourse Quality Index (Constraints and incentives for participation, inclusiveness and diversity, reciprocity debate, mutual respect, Identification, Degree of heterogeneity, thematization and effectiveness of content and interactive interface), which were operationalized into indicators, qualitative and quantitative.
Florestas tropicais sazonalmente secas: estudo da ocupação das áreas através de espécies representativas
(Universidade Federal de São Carlos, 2012-05-15)
Kortz, Alessandra Rocha
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Koch, Ingrid
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https://lattes.cnpq.br/4839123900255164
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Moraes, Evandro Marsola de
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http://lattes.cnpq.br/3100796431732251
Intergeracionalidade das habilidades sociais entre pais e seus filhos adolescentes
(Universidade Federal de São Carlos, 2012-05-15)
Comodo, Camila Negreiros
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Del Prette, Almir
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https://lattes.cnpq.br/2191226494887247
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https://lattes.cnpq.br/1022196212162281
The Behavior Analysis assigns an important role in the cultural practices of a group, since they refer to behavior patterns passed down through generations that may favor the development of a healthier culture. At the same time, the literature of social skills theoretical and practical has produced evidence that an elaborate repertoire of social skills is configured as a protective factor to deficits and pathologies, contributing to individuals quality of life. Thus, the learning of social skills, which can occur through the transmission between generations (intergenerational), is essential both for the healthy development of children and teenagers as well as a more ethical culture. Considering this evidence the present study aims to: (1) characterize the repertoire of social skills of parents and teenagers, (2) analyze the characteristics of social skills more frequently in the repertoires of parents and children respondents; (3) identify the possible correlation between the repertoire of social skills of parents and children.To this end, a sample of 142 students aged 12 to 17 years of public and private schools as well as their parents were evaluated in relation to their repertoire of social skills through inventories IHS-Del Prette and IHSA-Del Prette. The data were analyzed descriptively and inferentially by the Kruskal-Wallis H and Spearman tests. The results suggest that the social repertoires of adolescents and parents are differentiated according to gender of respondents, age and parental education. The data also show that there are transmissions of social skills classes (assertiveness, empathy, emotional approach and self-confidence) from parents to children. This transmission is differentiated according to the sex of parents and children and age of children. Therefore, are discussed the importance of an elaborate social skills repertoire in parents, as well the contribution that these results can bring to the culture.
Poética do cinema infantil brasileiro : aspectos temáticos, formais e mercadológicos em Menino maluquinho
(Universidade Federal de São Carlos, 2012-05-16)
Ou, Mirian
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Gamo, Alessandro Constantino
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https://lattes.cnpq.br/8208629144314123
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https://lattes.cnpq.br/2999114932382239
This work focuses on children's films and aims to raise some of their thematic, aesthetic and commercial characteristics. To do so, takes as its starting point the poetics of cinema as defined by Bordwell (2007) and analyzes two Brazilian films: The nutty boy a film (Helvécio Ratton, 1994) and The nutty boy 2 (Fernando Meirelles and Fabrizia Alves Pinto, 1998).
Estudo de estrutura genética da espécie de Cactácea colunar Pilosocereus machrisii utilizando DNA microssatélite
(Universidade Federal de São Carlos, 2012-05-17)
Perez, Manolo Fernandez
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Moraes, Evandro Marsola de
;
https://lattes.cnpq.br/3100796431732251
;
https://lattes.cnpq.br/0179487334009838
Pilosocereus machrisii is a columnar cacti with natural fragmented distribution; restrict to campos rupestres vegetation patches or rocky outcrops on the Cerrado domain; in Central and eastern Brazil. These features makes P. machrisii an appropriate biological model for population genetic studies aiming to gather information on population structure; since small and isolated populations are often vulnerable to genetic drift and high levels of inbreeding. Genetic diversity and population structure were assessed for ten microsatellite loci in 12 P. machrisii populations; covering the majority of the species distribution. Genetic diversity levels were relatively similar on sampled populations; except for Brotas-SP samples; that showed lower levels than those observed for other locations. Significant Hardy Weinberg Equilibrium departures were detected in eight different populations; for one or two loci. High levels of genetic differentiation and private alleles with elevated frequencies were detected; with total FST value of 0.357. The genetic structure of P. machrisii was analyzed with STRUCTURE and SAMOVA softwares; and populations were grouped in four main clusters; with secondary structure on two of these clusters. Significative levels of correlation between genetic and geographic distances were observed for the whole dataset; however; when the genetic groups were analyzed separately; no correlation was verified. Furthermore; the genetic relationship between the populations was observed with a principal coordinate analysis (PCA) and an UPGMA dendrogram. The genetic structure observed in P. machrisii suggests that historical factors caused populations fragmentation; with subsequent geographic isolation and high genetic differentiation between them.