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Estruturas de copa e raiz de espécies arbóreas do Cerrado nos primeiros anos de crescimento
(Universidade Federal de São Carlos, 2016-10-03)
Silva, Ricardo Rafael Ribeiro da
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Prado, Carlos Henrique Britto de Assis
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https://lattes.cnpq.br/7561749470600567
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https://lattes.cnpq.br/8620290960870650
Tree species of the cerrado vegetation show several degrees of leaf deciduousness such as the deciduous, semi deciduous and evergreen. However, it is not clear if these groups are functional groups. The main objective of this dissertation was to identify sets of characteristics and their compromises in each leaf phenological group that could identify functional groups since the early years of development. By identifying interrelationships of traits, it was possible to established syndromes that could characterize functional groups. We used canopy and root architecture as well as biomass partitioning as sets of traits to identify functional groups. Deciduous showed a relatively more vigorous root system, reaching greater depths, and higher total biomass of fine roots in relation to semi deciduous and evergreen species. There were more biomass of fine roots occupying the upper layers of soil and thick roots in the deeper layers in deciduous species. Additionally, the architecture of deciduous showed longer branches and higher biomass in heterotrophic portion. The leaf phenological groups were separated significantly into three functional groups. Deciduous and evergreen showed contrasting traits. The semi deciduous species usually occupied the intermediate position. By using sets of traits from roots and canopy it was possible to separate significantly deciduous, semi deciduous e evergreen species into three functional groups where leaf deciduousness was just one of several intertwined characteristics in each group.
Determinantes
(Universidade Federal de São Carlos, 2016-10-04)
Prata, Gustavo Gomes
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Costa, Ivo Machado da
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https://lattes.cnpq.br/1111331485581633
This paper wants to provide subsidies to the Mathematics teacher of Basic Education, regarding to Determinants. From a consistent theoretical basis, it builds the concept of Determinant and deducts its main properties. Subsequently, it presents some of its applications, which can be explored in High School, linked to the historical context in which they were developed, aiming to make learning of Determinants more significant. Thereby, the Chapter 1 presents basic concepts of Linear Algebra, which are prerequisites for the definition and study of the Determinant Function, as well as of its properties, which are developed in Chapter 2. Chapter 3, on the other hand, promotes connections of Determinants with other middle-level mathematical concepts related to the own Linear Algebra and Analytic and Euclidean Geometry, each one with a specific historical introduction.
Efeitos de nanopartículas de óxido de cobre (nano-cuo) e cloreto de cobre (cucl2) sobre a composição bioquímica e atividade fotossintética da Clorofícea Raphidocelis Subcapitata
(Universidade Federal de São Carlos, 2016-10-05)
Alho, Lays de Oliveira Gonçalves
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Souza, Jaqueline Pérola de
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https://lattes.cnpq.br/2320506014760329
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Melão, Maria da Graça Gama
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https://lattes.cnpq.br/8342306603661310
Production and utilization of copper oxide nanoparticles (CuO-NP) have increased recently due to their specific physicochemical properties. Most of these nanoparticles end up in aquatic ecosystems, but their effects on the biota were not yet well characterized. The present study aimed to compare the toxicity of CuO-NP and copper chloride (CuCl2) in the microalgae Raphidocelis subcapitata, in order to determine whether the main cause of possible toxicity is due to released copper ions or intrinsic properties of the nanoparticle. We evaluated the effects of these two compounds on several physiological and biochemical parameters of the algae (photosynthetic activity, growth, dry weight, carbohydrates levels, total lipids content and lipid classes). Exponential growth phase algal cultures were exposed during 96 hours to different concentrations of CuO-NP (0.07 to 12.6 μM Cu L-1) and CuCl2 (0.07 to 2.29 μM Cu L-1). The mean inhibitory concentration for R. subcapitata exposed to nanoparticles at 96 h (IC50-96h) was 74 μM Cu L-1, while for CuCl2 was 0.65 μM Cu L-1. There was an increase in dry weight, total carbohydrates and total lipids in algae exposed to the highest copper concentrations in both treatments (salt and nanoparticles), but there was not much change in chlorophyll content after 96 hours of exposure. Concerning lipid composition, sterols (ST) and aliphatic alcohol (ALC) increased under CuCl2 exposure, while aliphatic hydrocarbons (HC) and triacylglycerols (TAG) increased in the presence of nano-CuO, compared to control. The highest concentrations of each compound reduced 36% of algae initial fluorescence (F0) and about 70% the maximum fluorescence (Fm) after 96 hours of metal exposure. Maximum (ɸM) and effective (ɸM ') quantum yields were affected by the two copper compounds, with the largest changes found in the algae exposed to nano-CuO. The major changes observed in the efficiency of oxygen complex evolution (F0/Fv) indicate that this was the main site of action of copper, through changes in the process of water photo-oxidation, especially in algae exposed to nano-CuO. The photochemical (qP) and non-photochemical quenching (qN) were not significantly altered by the metal. We found that CuCl2 was more toxic than nano-CuO in all parameters evaluated, and this can be related to lower free copper ions available in nanoparticles. In this study, we concluded that the two copper compounds significantly affect photosynthetic activity, of R. subcapitata, with more pronounced changes in algae treated with CuO-NP, which may indicate different forms of action between the dissolved copper in the salt and in the CuO-NP. The parameter F0/Fv showed greater sensitivity to copper, being potentially a good tool for research on the physiological stress generated by metals in microalgae.
Paralelos entre a física e a matemática para o ensino de geometria aplicações da interdisciplinaridade como recurso didático
(Universidade Federal de São Carlos, 2016-10-06)
Rodella, Yuri Michelan
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Salvador, José Antonio
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https://lattes.cnpq.br/2487171069472158
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https://lattes.cnpq.br/7356239490836027
Correlações entre parâmetros microestruturais, parâmetros térmicos e resistência mecânica de ligas Sn- Bi e Sn-Bi-(Cu,Ag)
(Universidade Federal de São Carlos, 2016-10-07)
Silva, Bismarck Luiz
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Spinelli, José Eduardo
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https://lattes.cnpq.br/8882038118634925
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https://lattes.cnpq.br/4377238190630005
The present research aims to develop a theoretical/experimental analysis of the combined effects of solidification thermal parameters, Bi content and addition of ternary elements (Cu, Ag) on the final microstructure aspects and on the final mechanical resistances of directionally solidified Sn-Bi, Sn-Bi-Ag and Sn-Bi-Cu solder alloys under transient heat flow conditions. Hence, experimental interrelations between microstructure and thermal parameters and between mechanical properties and microstructure could be established. The microstructures regarding the Sn-34wt.%Bi and Sn-52wt.%Bi alloys show the presence of β-Sn dendrites with Bi precipitates on their own, being enveloped by a lamellar binary Sn-Bi eutectic. The Sn-58wt.%Bi eutectic alloy show a variety of microstructures along the length of the directionally solidified casting, which includes binary eutectic, Bi plates, Bi trifoils and fishbone eutectic. In the case of the ternary Sn-Bi-Ag and Sn-Bi-Cu chemistries, microstructures are constituted by β-Sn dendrites decorated with Bi particles, Bi-Sn eutectic and Cu6Sn5 and Ag3Sn intermetallic particles for the Cu and the Ag bearing alloys, respectively. Experimental growth laws have been derived for both dendritic (λ1, λ2, λ3) and eutectic (λfine, λcoarse) arrangements considering the following alloys: binary Sn-34wt.%Bi, Sn-52wt.%Bi e Sn-58wt.%Bi alloys and ternary Sn- 34wt.%Bi-0.1wt.%Cu, Sn-34wt.%Bi-0.7wt.%Cu e Sn-33wt.%Bi-2wt.%Ag. Considering the binary Sn-Bi, it has been observed that increasing Bi content (34wt.%-->52wt.%-->58wt.%Bi), may cause a decrease on both strength and ductility, except for the sample at P=6mm of the Sn-52wt%Bi alloy. Hall-Petch type functional correlations have been able to represent the evolution of the tensile mechanical properties for the examined Sn-Bi and Sn-Bi-X alloys.
Obtenção e caracterização de heteroestruturas epitaxiais magnetoelétricas de [KNbO3]0,9-[BaNi1/2Nb1/2O3-𝛿]0,1 e [La0,7Sr0,3MnO3]
(Universidade Federal de São Carlos, 2016-10-07)
Lopez, Andrea Naranjo
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Venet, Michel Zambrano
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http://lattes.cnpq.br/4256279833398263
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Cardoso, Claudio Antonio
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https://lattes.cnpq.br/0332061570052918
Magnetoelectric materials have been extensively studied in the last decade, particularly due to the applicability for sensors, attenuators, transformers and others. Hence as an objective for this work we propose a study on the fabrication and characterization of materials that may be used as extrinsic magnetoelectrics. Our proposal consists in producing by pulsed laser deposition bilayers of ferroelectric thin films [KNbO_3]_(0,9)-[BaNi_(1/2)Nb_(1/2)O_(3−𝛿)]_(0,1) (KBNNO), grown on magnetic thin films [La_(0,7)Sr_(0,3)MnO_3] (LSMO). Focusing our interest on the KBNNO, because it is a relatively new material, and there is not enough information about its possible applications as magnetoelectric, just as there are for photovoltaic application. Initially, we made a detailed study on the dependence of the ceramic target densification of the ferroelectric phase KBNNO with the sintering temperature, with the aim to determine the appropriate parameters in the fabrication of the ceramic target, obtained by solid state reaction method. It was possible to achive ceramics targets with relative densities greater than 94 %. The structural and morphological properties of the ceramic targets and thin films were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques, respectively. The X-ray diffraction profile confirmed the phases and crystal structures of the samples. Particularly, the thin films showed an oriented growth (epitaxial) with formation of nanopilares with different diameters and heights depending on the deposition parameters. The electrical properties were determinated by ferroelectric hysteresis and electric impedance spectroscopy. The magnetoelectric and optical properties were determined by magnetoelectric coupling and photoluminescence measurments, respectively. For the ceramic samples the ferroelectric and dielectric behaviors were confirmed, and for the thin films a magnetoelectric coupling between the ferroelectric and magnetostrictive phases was found. Finally, the value of the gap for ceramic KBNNO was found to be aroud 1.248eV, this result is consistent with values reported in the literature for this material.
Aspectos ecológicos da avifauna aquática nas fozes dos rios Tijucas e Inferninho, Santa Catarina, Brasil
(Universidade Federal de São Carlos, 2016-10-07)
Rubert, Barbara
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Branco, Joaquim Olinto
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https://lattes.cnpq.br/3241905846920207
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https://lattes.cnpq.br/7507009796249447
Estuaries are highly productive environments susceptible to environmental variables, and important to the life cycle of various species, to waterfowl serve as a point of rest, feeding and nesting. These sites also receive migratory birds seeking the accumulation of energy required for the return to the reproductive areas. These species, as well as residents, have their distribution, occurrence, abundance and behavior influenced by environmental variables, seasonality and human presence. Thus this study aimed to characterize the structure of the community of waterfowl, as well as behavioral pattern, relationship with environmental variables and habitat use by them in the mouths of the rivers Tijucas and Inferninho. The Tijucas’ Bay where this study was conducted, presents sediment deposition and formation of extensive muddy plans. To collect the data length of 1.1 km was covered in each mouth, from June 2015 to May 2016, sampling occurred every two hours, from 08 hours to 16 hours. The data collected were species, average number, activity and micro-habitat. five microhabitats were considered, based on different faces found in two locations, and analyzed environmental variables were: wind speed, tide height, precipitation and temperature. The curve of rarefaction and Jackknife 2 were used to determine the sample sufficiency, Shannon index was used to estimate the annual and monthly diversity and similarity among the studied areas was calculated using the Jaccard index. Analysis of Variance (ANOVA) and Kruskal-Wallis test were used to determine the differences between species richness, average number and behavior of the species for hours and months of sampling. The behavior relative frequency was grouped by similarity of Bray-Curtis, the Indicator Species Analysis was used to determine the association of species with micro-habitats, and used Canonical Correlation Analysis (CCA) to determine the correlation between the variables environmental and behavior and between species. Were recorded 44 species of waterfowl in the voices of the two rivers, 10 migratory. The similarity between the two areas was 75%, indicating high similarity of microhabitats between areas. The diversity at the mouth of the river Tijucas was higher than the mouth of the river Inferninho, this difference is related to river discharge of rivers, hence the nutrient input. The difference in species richness, abundance was significant only between the months of observation, and the months with the highest diversity occurred in the late spring, summer and early fall, probably due to the life cycle and arrival of migratory species. The rest was the most frequent activity, followed by foraging, this was negatively related to temperature variation, it suggests that the higher the temperature, the lower the foraging, avoiding waste of energy and water. Foraging was negatively correlated with the height of the tide as the low tide provides a food resource. The indicator species analysis showed that most of the species was associated with only one micro-habitats, this can be explained by the abundance of available resource, since rich environments allow specialization of species.
Celso Furtado e José Medina Echavarría: subdesenvolvimento, desenvolvimentismo e política
(Universidade Federal de São Carlos, 2016-10-10)
Pinto, Gustavo Louis Henrique
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Cepêda, Vera Alves
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https://lattes.cnpq.br/4917331423373631
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https://lattes.cnpq.br/4075161446709253
Focusing the study on the intellectual production of Celso Furtado and José Medina Echavarría, this research comparatively discusses the proposals of those thinkers concerning the theory of underdevelopment (as a particular historical and political formation) and the developmentalist project (a “guided” promotion of development via planning). Thus, we put into question the theses and projects of those two thinkers in the context of debates in the field of ECLAC tradition, seeking to analyze how authors with different methods (historical-structural in Furtado and Weberian rationality in Echavarría) reached the same thematic configuration in the explanation of the problem of development in Latin American trajectories and its transformation, electing as central in the analysis the role of policies and the privileged theme of democracy. Our question is to analyze the similarities and differences found in the theses of Furtado and Echavarría in unveiling the logic of underdevelopment and to understand how, from different angles, democracy appears endowed with fundamental importance in the process of overcoming underdevelopment.
A Convenção nº 169 da Organização Internacional do Trabalho sobre direitos indígenas e sua (in)aplicabilidade no território brasileiro
(Universidade Federal de São Carlos, 2016-10-10)
Souza Júnior, Ângelo Aparecido de
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Sola, Fernanda
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https://lattes.cnpq.br/2265749626773521
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https://lattes.cnpq.br/6964755032225808
The Brazilian Federal Constitution of 1988 brought great changes concerning the treatment of indigenous peoples, especially the principle of alterity, reflecting on the right for the indigenous people to be different, as well as the issues on indigenous lands, which have some of very own institutes, diverse from Brazilian Civilian Law. However, it has not always been this way. Brazil has been through many legislation evolutions until we reached the current moment, when the integrationist idea relating the indigenous people to the local society has lost its power and has now disappeared, after the 1988 Constitution. We started with the investigation of the existence or not of an indigenous estate inside the Brazilian territory before the European colonization that justifies the primary rights to the lands that they traditionally occupy, provided by our Federal Constitution. To corroborate the need for a better protection to the indigenous people, we studied the International Conventions, which were held around this subject, especially the ones edited by the International Labour Organization (ILO), which asks for a detailed analysis on the organization and its juridical capacity of International Law to be part of a treaty. Therefore, considering the referred International Conventions endorsed by Brazil, we could observe the concern in the International scenery about the indigenous people. Notwithstanding the endorsement by Brazil, it is necessary to analyze the process of internalization of these, considering the dualist and unitary tendencies; the status of these conventions when they get to Brazil; and the eventuality of some constitutional habit. We also searched in the infra-constitutional legislation, if it presents any irregular habit with the Federal Constitution and if they contribute to a better perception of the importance of the protection of the indigenous peoples as a mechanism of preservation of the social organization, customs, languages, beliefs and traditions of these peoples.
Características físicas do lenho em grupos fenológicos foliares de arbóreas de cerrado
(Universidade Federal de São Carlos, 2016-10-10)
Venancio, Natalia Cristina
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Prado, Carlos Henrique Britto de Assis
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https://lattes.cnpq.br/7561749470600567
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https://lattes.cnpq.br/8973645086423515
Leaf phenological groups of cerrado tree species show significant differences not only concerning the maintenance of foliage throughout the year but also about reproductive phenology as the peak and duration of flowering. In addition to the vegetative and reproductive phenology, deciduous (DE) semideciduous (SD) and evergreen (EV) cerrado trees have canopy architecture and the type of branching and leaf production significantly different. Therefore, the structure and functionality of wood probably show significant differences in these three groups (DE, SD, and EV). We aimed to determine the physical characteristics of wood and their relationships in aerial and underground parts of DE, SD, and EV tree species of cerrado vegetation. Internal (density, porosity, and water storage capacity) and external (crown height and root depth) physical traits of wood were determined in species distributed in DE, SD, and EV in two stages of development: adult and in the initial growth. By sections of the trunk at the transition between aerial and underground portions, we obtained results from bark and trunk in studied leaf phenological groups. There was a significant difference between DE and EV in a functional gradient where we found SD species. This group showed similar values to DE or EV species or even significantly different from both groups depending on the analyzed trait. Thus, the species distributed in leaf phenological groups also differed significantly in internal and external physical characteristics of wood in branches, in the transition from aerial to aboveground part and underground portion. These results indicated species grouped by leaf phenology have several other physical characteristics significantly different. Therefore, leaf phenological groups of cerrado trees are, in fact, functional groups. It has been successfully used to show that leaf phenology is just one attribute among many others traits distributed in the canopy, stem, and root assembling tree species of cerrado in at least three functional groups. Therefore, regardless the phylogenetic relatedness in each foliar phenological group these species belong to a functional group. Adults DE species growing under natural conditions are taller and have branches less dense and with more imbibition capacity than EV species. Conversely, in early years of growth DE were still taller with a deeper root system but with branches, stem and roots less dense than EV species. The inversion of wood internal traits between DE-EV demonstrated that the strategies for the acquisition and use of resources changed during tree development. It resulted in adult individuals significantly different and these changes probably depended on the biomass accumulated (size) in cerrado trees. The identification of these functional groups of trees is useful for more efficient management of protected areas or for recovering degraded areas of cerrado vegetation. The functional groups of cerrado trees could be identified not only by a list of attributes significantly different but by the reliance among these traits. These relationships built up a particular syndrome in each functional group. Syndromes originated through compromises among characteristics result in specific skills for acquisition, use and storage resources in every tree functional group. These skills result in similar survival strategies (reproduction, growth, and defense) and responses to environmental stresses in each of these functional groups of tree species of the cerrado vegetation.
Análise da acessibilidade do Parque Natural Municipal Victório Squierolli (Uberlândia/MG) para visitação de pessoas com deficiências física, auditiva e visual
(Universidade Federal de São Carlos, 2016-10-10)
Lima, Ana Beatriz Leça de
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Melo, Ismail Barra Nova de
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https://lattes.cnpq.br/3576937472687059
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https://lattes.cnpq.br/4141601814503431
The accessibility for park users with disabilities is rarely addressed. When it is addressed, the types of disabilities are treated individually. However, it is noteworthy that public spaces and services are used by all categories simultaneously. Due to that fact, the main purpose of this work is to analyze the accessibility for three types of disabilities: physical, hearing and visual. This was done in the facilities and activities offered by the Parque Natural Municipal Victório Siquierolli, located in Uberlândia / Minas Gerais. This is a relevant place in non-formal environmental education, offering activities for local schools, researchers and society in general; which also supports the research and extension activities of the Federal University of Uberlândia. Although the location has some access for wheelchair users, there is no specific accessibility project for other disabilities. The research methodology was divided into literature review and documentary research and field research. Field research included direct observation through photographic registration of the park structures using as a gathering instrument, a protocol based on Brazilian Standard NBR 9050/2015, profiling the mediators working in the park and the from the perspective of three associations for each type of disability of this study, through semi-structured interviews. With the results, we can notice that the park does not have all the structures for accessibility that NBR 9050/2015 standard requires, and the present structures, such as ramps, signs, handicap restrooms and free space for movement are not entirely suitable, with a view only to assist people with physical disabilities, more specifically wheelchair users. So necessary adjustments should be done to benefit other disability categories cited in this study, in order to improve the structure of the park and as a consequence increase and diversify the visitors.
O estágio supervisionado em administração pública no Brasil : entre virtudes e vicissitudes, identificadas e avaliadas no curso da UNESP de Araraquara
(Universidade Federal de São Carlos, 2016-10-11)
Ramalheiro, Geralda Cristina de Freitas
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Fonseca, Sérgio Azevedo
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https://lattes.cnpq.br/2879240108726907
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https://lattes.cnpq.br/9407365514245500
Throughout history, the teaching of Public Administration has gone through several crises, experienced moments of glory , others of retraction others of expansion and legitimation and now experience the maturity in the search for own contours that were provided by own curriculum guidelines of the Public Courses. One of the pedagogical tools used in conciliation process of theory with practice is the internship. Public administration programs worldwide, include mandatory or optional internship in their curriculum grid. As a result, thousands of worldwide university students participate in Internship programs in public agencies. The objective of this dissertation will be to analyze the internship from the optics of the teaching complementation in public administration, checking the difficulties, the virtues and the benefits provided by the achievement of internship. Concurrently, will seek to analyze the relationship between the internship and the pedagogical projects of a sample of public administration courses. Another objective is to research the internship influence about student’s decision to remain or not in the public career. To materialize the objective of this dissertation, will be used a methodological strategy which is explained in the following expressions: exploratory research with purpose made possible by qualitative method, according to the inductive logic and outlined such as unique case study (internships in public administration courses of UNESP - Araraquara). Operationally, it is indicated that this search will be performed based on triangulation of three methods: documentary research, fulfillment of interview and application of survey questionnaires. What became clear is that the stage in the Public Course aims to complement the education and is an opportunity for professional experience in many education institutions, whose main focus is to deepen the knowledge and the fiscal year of training. In UNESP the experience lacks systematization, is a practice not gestated and undervalued.
As veredas do bode : criação na solta e laboro no sertão de Pernambuco
(Universidade Federal de São Carlos, 2016-10-11)
Zambrini, Ariane Vasques
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Vander Velden, Felipe Ferreira
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https://lattes.cnpq.br/7289231173735671
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Villela, Jorge Luiz Mattar
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https://lattes.cnpq.br/8301325600502054
The goal on this dissertation performs both a description and an analysis on human and nonhuman relation based on Floresta's countryside, a town located in Pernambuco State. I have described this relation from some different point of view, yet their particular way of breeding (criação na solta) has been the main focus on my analysis. The intensive field research gave rise to the sketching of interspecies relations in that area. It had occurred in the period of three months when took place conversations and interviews with local husbandman who breeds both in the countryside (no mato) and the streets (na rua). In particular, the issue draws upon a description about how five families from the riparian zone (Cachoeira, Pocinhos, Quebra-Unha, Capim e Riacho do Meio) deal with and understand their relations with goats. At first, my analysis looks forward to the contrast between laboro as a husbandman daily activity and both the concept of work and and the extensive production method. The laboro is a set of very specific procedure and skill – a part of what is called criação na solta – and they are a condition of possibility for what I intend to describe and understand. Signs belong to the set of skills: they are a knife cutting made at the goat's ear which concurrently symbolize and identify the animal's owner and its family. The laboro and the signs are ways of realization and accomplishment of family affiliation. The laboro relies upon the animal's intense acquaintance with the caatinga which brings together a particular husbandry expertise; just a few men knows the terrain and how to breed goats. The concept of domestication can be drawn from the nexus relating breeder, livestock and caatinga in the manner of their mutual relation. Hence, from the standpoint of breeders and their families I describe how this practical way of breeding give rise to an understanding on interspecies relation in a given region. Those who knows the veredas, the goat-tracks traced as daily over the years, knows as well the ground pattern and footprint which deliver a way of being which is proper to husbandman, caatinga and the goat.
Estudo de catalisadores bimetálicos de platina ou paládio e cobre suportados em céria para a reação de PROX-CO
(Universidade Federal de São Carlos, 2016-10-13)
Almeida, Janete Cavalcante
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Assaf, José Mansur
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https://lattes.cnpq.br/9563312407691130
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https://lattes.cnpq.br/3437805220991791
In the present work, catalysts were prepared xCuO / CeO2 (x = 1.0 and 3.0% by mass) doped with Pt or Pd for application in the preferred oxidation reaction of carbon monoxide, also known as PROX-CO reaction. The catalysts, previously activated, were tested in the PROX-CO reaction at low temperature (100-300° C). The syntheses of the catalysts were performed by coprecipitation and the addition of the Pt and Pd promoters by wet impregnation. The catalysts were characterized by thermogravimetric analysis (ATG / ATD), X-ray diffraction (XRD), X-ray fluorescence (FRX), fissestion analysis N2 (BET method), programmed temperature reduction (RTPH2), desorption at programmed temperature of carbon monoxide (DTP-CO), metal dispersion, Fourier transform infrared spectrometry (DRIFTS), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The products formed during the reaction were analyzed by gas chromatography. The XRD results of these samples showed only peaks characteristic of CeO2. The metal dispersions were shown to be similar as copper loading increased. The spectra of DRIFTS proved the interaction between the CO/metal and as well as the XPS analysis the oxidation state. Different behaviors were observed in bimetallic catalysts. From the results obtained, it was observed that the catalyst 1.0Pt1.0CuO / CeO2 resulted in a material with a greater surface area or specific area than the other catalysts and it showed a good catalytic performance with 99% conversion at a temperature of 100 °C.
Comportamento mecânico em fadiga da liga de titânio beta metaestável Ti-5553
(Universidade Federal de São Carlos, 2016-10-14)
Campanelli, Leonardo Contri
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Silva, Paulo Sérgio Carvalho Pereira da
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https://lattes.cnpq.br/4783514460488161
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Bolfarini, Claudemiro
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https://lattes.cnpq.br/9231627080617037
The microstructure of metastable beta Ti alloys is a decisive factor that governs their properties and, therefore, the assessment of the relation between the microstructure and the fatigue response means an advance in the still incipient knowledge on these alloys. The purpose of this work was to study the fatigue behavior of Ti-5Al-5Mo-5V-3Cr (Ti-5553) alloy recently developed for landing gear applications, which was kindly supplied by Boeing for this work. The material was subjected to different heat treatments (BASCA and double aging) aiming at to comprehend the influence of the alpha phase precipitation over the beta matrix, as well as to understand the effect of hydrogen even in commercially acceptable contents. BASCA microstructure comprised large laths and fine needles of primary and secondary alpha phase respectively, with a film of approximately 2 μm of thickness at grain boundaries. A refined and aligned structure of alpha phase resulted from the double aging treatment, reducing to 0.2 μm the thickness of the grain boundary alpha film. The fatigue limit at 5x106 cycles raised by the standardized staircase method initially showed an improved result for the harder microstructure, which resulted from the double aging, for 100 ppm of hydrogen. The fatigue crack nucleation, whether at the surface or subsurface, was attributed to the thickness of the grain boundary alpha film. In spite of this film brittleness, crack propagation predominantly occurred through the grains and exhibited quasi-cleavage facets and dimples. For the structure arising from the BASCA treatment, the decrease of the hydrogen content for 25 ppm led to a significant increase of the fatigue resistance as a consequence of the absence of hydrides and the higher toughness, overcoming the effect of the coarse alpha phase particles in the beta phase matrix.
O efeito do tamanho do lote de transferência no lead time em um ambiente flow shop: uma análise quantitativa
(Universidade Federal de São Carlos, 2016-10-14)
Barco, Clarissa Fullin
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Godinho Filho, Moacir
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https://lattes.cnpq.br/6136685270563354
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https://lattes.cnpq.br/1250853082206361
This thesis proposes to evaluate the effect of transfer batch size on lead time reduction in flow shop environments (balanced and unbalanced, with a bottleneck). In order to achieve this objective, Design Science was used as a research method, in which a static simulation model is proposed and several scenarios are analyzed and evaluated in relation to important Production Management theories. The model proposed to represent a flow shop uses the Factory Physics equations (HOPP; SPEARMAN, 2008) e considers the following shop-floor variables: i) the average setup time; ii) average defect rate; iii) mean time between failures; iv) mean time to repair the machine; v) variability in processing time; vi) variability of the time between arrivals of orders and vii) transfer batch size. The results demonstrate that for both balanced and unbalanced environment, transfer batch size has little effect on lead time, when operating with a process batch size away from optimal batch size (minimum point of the lead time - lot size curve proposed by Karmarkar et al. (1985)). To get a good lead time performance, it is first necessary to reduce process batch size before making efforts to reduce transfer batch. For an unbalanced environment, reducing process batch size only at the bottleneck, coupled to transfer batch size reduction across the flow shop, provided a lead time reduction on the order of 30%, while the remainder flow shop operated with large process batches. In such configuration, the contribution from setup time reduction at the bottleneck machine has generated a small effect on the lead time performance considering the parameters used in this work.
Efeito do treinamento resistido e reposição de hormônio sobre o transportador de glicose hepático (GLUT2) de ratas ovariectomizadas
(Universidade Federal de São Carlos, 2016-10-14)
Tomaz, Luciane Magri
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Lavoie, Jean Marc
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Perez, Sergio Eduardo de Andrade
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https://lattes.cnpq.br/9408953831211309
;
https://lattes.cnpq.br/8430651176725216
Oestrogens withdrawal in rats, through ovariectomy (Ovx), has been repeatedly associated with disturbances in lipid metabolism. Among them, liver fat accumulation is well substantiated. On the other hand, there is few information on how liver fat in Ovx rats may affect glucose metabolism in liver. The purpose of the study was to investigate the effects of Ovx and 12 weeks resistance training (RT) program on gene expression of GLUT2 the main glucose transporter in liver and on PPARy a transcription factor known to target GLUT2 gene expression. RT in rat is an exercise training model that has received little attention but that has been shown to result in metabolic adaptations in Ovx rats as well as in post-menopausal women. Holstman rats were divided into 5 groups: Sham-sedentary (Sed), Sham-resistance trained (RT), Ovx-Sed, Ovx-RT, and Ovx-Sed with hormone replacement (E2). The RT protocol consisted of resistance training sessions held every 72 h for 12 weeks, during which session the animals performed 4 to 9 vertical climbs (1.1 m) with progressive weights (up to 30 g) tied to the tail at 2 min intervals. In addition to liver fat, GLUT2 protein levels and PPARy transcripts were all increased (P < 0.05) in Ovx compared to Sham-Sed animals, suggesting an increase hepatic glucose uptake under oestrogens withdrawal. Resistance training as well as oestrogens replacement in Ovx rats decreased liver fat accumulation as well as GLUT2 and PPARy gene expression to the level of Sham-Sed group. The present results suggest that liver fat accumulation in Ovx rats is accompanied by an increased glucose uptake thus providing substrate for an increased de novo lipogenesis. RT appears to be an appropriate exercise model to circumvent these effects.
Urbanização, planejamento e mudanças climáticas : desafios da capital paulista e da Região Metropolitana de São Paulo
(Universidade Federal de São Carlos, 2016-10-14)
Back, Adalberto Gregório
;
Vargas, Marcelo Coutinho
;
https://lattes.cnpq.br/8869018482093008
;
https://lattes.cnpq.br/7945490786499120
The aim of this thesis is to investigate how the recent urban development agenda of São Paulo contributes to overcoming the challenges related to addressing climate change at the local and regional/metropolitan area. Methodology. First we identify the main challenges related to addressing climate change within the MRSP, taking into account the historical development of both the city of São Paulo and the municipalities of Greater São Paulo. We focus our attention on the challenges of urban mobility, taking into account this is the main source of GHG emissions; Housing, given that the main risk areas in the city and region were generated by a lack of adequate housing policies along the urban development of São Paulo; and Environmental Protection because it is related to containment of urban sprawl. Given this identification, we analyze the policy responses to these questions given by the Climate Change Policy and the instruments of the Master Plan of the São Paulo’s city. The results They reveal that the strategies referring to the climate change policy in the city of São Paulo do not address the main determinants involved in generating GHG emissions and vulnerabilities to climate change, nor do they apply to regional / metropolitan challenges. On the other hand, the urban planning instruments act in the municipality promoting the construction and population densification in areas of consolidated urban infrastructure and with mixed use of the soils, promote mechanisms for a social housing construction prioritizing a low income population, incentive to Generation of Jobs in a decentralized way in the city in order to reduce the commuting displacements of great distances and to create mechanisms to contain the irregular and excluding urban sprawl over a rural area of the municipality. In this sense, the regulatory instruments foreseen in the municipality's master plan act on the main causes that generated social and environmental risks and GHG emission levels in the city of São Paulo, and are reflected in the metropolitan context.
Análise de implementação do PRONATEC/Bolsa Formação no Instituto Federal do Triângulo Mineiro (IFTM) 2012-2015
(Universidade Federal de São Carlos, 2016-10-17)
Ruggiero, Maria Fernanda
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Justo, Carolina Raquel Duarte de Mello
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https://lattes.cnpq.br/9209489935777843
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https://lattes.cnpq.br/8232223559924938
This research deals with a process analysis of implementation of the Nacional Program of Access to technical education and job/scholarship education in the Federal Institute of Education, Science and technology of the Triângulo Mineiro Campus Uberlândia and Uberlândia Centro. Between the years of 2012 and 2015, aiming to identify what form and factors of political-institutional conditioned the implementation and its sub processes and propose an instrument in order to evaluate the program. Primarily we aimed to identify the objectives of the program and the strategy of implementation developed by the Federal Govern, so the expected results could be achieved. From the recognition of the implementation strategy was built an evaluation model of the implementation of PRONATEC / Scholarship education in Federal Education Institutions. Afterwards through a case study, we sought to evaluate in what way some political-institutional variants condition the implementation of PRONATEC/SE. The data of the case study to recognize de conditioning factors of the implementation processes were collected by the management report, execution programme documents and a semi structured interview with the implementing agents of the program in a local level. The research results aim that the PRONATEC/SE in IFTM implementation was favored mainly by the commitment and active performance of the implementing agents in coordinating alongside with the demanding collaborators the course offers; by the infrastructure use and the local human resources in the institution and the payment of the student assistance to the students. The main obstacles found in the implementation process were the transference financial resource delay; reduced time to articulate the course offers; absence of clear goals to be achieved in a heterogeneous profile of the students
Integração de contextos e habilidades pessoais, sociais e profissionais no desenvolvimento de soluções tecnológicas para o profissional da saúde
(Universidade Federal de São Carlos, 2016-10-19)
Abib, Janaina Cintra
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Anacleto, Junia Coutinho
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https://lattes.cnpq.br/6200743168568684
;
https://lattes.cnpq.br/1482384850101573
This thesis presents a research behind the creation of a process model for application development and a set of guidelines to instruct and support the work of developers focused on healthcare. The current Brazilian condition reflects that the working environment of healthcare professionals in long term care is conducive to the construction of a new identity and reference for these professionals, who incorporate their personal and social activities to professional activities and build cooperative relations with their peers beyond the professional environment. In this context, where healthcare professionals are re-analyzing their relationship with work and issues that affect the quality of life and the quality of their professional activities, the support of technological resources is a strong partner, especially in sharing and disclosure information and also in management daily tasks. In order to incorporate technology requirements that naturally may be included in the workflow of these professionals without interrupt their routines, software developers have been mobilized to create natural interaction applications that help healthcare professionals and promotes the adoption of applications. Natural interactions are defined here as the way users share information using technological resources and applications instinctively, in a transparent way, without concern the peculiarities of the application or technological appeal. For the development of these applications, which considers users’ profiles who naturally mix professional, personal and social contexts, it is required a process model to guide and assist developers in this task. Thus, as scientific contribution in Computer Science, an application development process model and a set of guidelines to supports the developer’s work to create applications for healthcare professionals have been proposed. The proposed model encourages and provides the integration of different contexts of the healthcare professionals, enabling resource appropriation through the perception of abilities and prior knowledge of these professional, and encourages the addition of some new abilities.