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Integridade biótica de fragmentos florestais em matriz urbana
(Universidade Federal de São Carlos, 2018-03-19)
Galvani, Fabricio
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Leite, Eliana Cardoso
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https://lattes.cnpq.br/2186623269243747
;
https://lattes.cnpq.br/0129627542515812
In Brazil, semi-deciduous seasonal forest (SSF) is one of the physiognomies of Atlantic Forests, and sited between the Atlantic Forest and Savanna Biomes. Over the last decades, SSF has been fragmented by use of the soil for agricultural or urban areas. The urban and industrial growth promote a strong impact in forest fragments due to the edge effects, isolation, and habitat degradation. Hence, the knowledge about ecologic dynamics and biotic integrity inside this fragment is essential to guide public policy and to support decision makers, in the planning and management of territories. The goal of this study was to analyze the Biotic Integrity in fragments of SSF inside Ribeirão Preto (SP), a medium-sized city in the southeast of Brazil, and to analyse the relationship between BII and landscape metrics (size, shape and connectivity). The method (BII) has nine indicators (littler and grass cover, stand of dead trees, exotic wood species, vines, gaps in the canopy, vascular epiphytes, later species in canopy and in understory). The results can vary from 9 to 45. The survey was carried out in 9 forest fragments, the sizes of which are from 1,3 to 185,0 ha, all with urban influence. The relation between IBI and landscape metrics (size, shape) were analyzed by the Pearson correlation. BII value were registered from 26,0 to 38,0 or as low, medium or high integrity. The results showed strong correlation between IBB and size (p= 0, 7944), and weakness with shape (p= 0, 47). Therefore, the results show a vast area (77 ha) with low Integrity and another small area (22 ha) with high integrity. It was registered a medium-sized area, with high integrity located urban area in expansion, for which it was recommended the creation of one Protected Area.
Aplicação do método de lattice Boltzmann na simulação de meios filtrantes : implementação de códigos para geração do domínio de cálculo e condição de contorno de escorregamento
(Universidade Federal de São Carlos, 2018-03-19)
Augusto, Liliana de Luca Xavier
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Gonçalves, José Antônio Silveira
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https://lattes.cnpq.br/0337997526924402
;
Lopes, Gabriela Cantarelli
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https://lattes.cnpq.br/5680967191791061
Many studies have been carried out to find the best operating point for filter media, and the mathematical modeling and simulation are becoming a important tool. In this work, a code was built to generate geometric models for filter media from data obtained by statistical analysis and microscopic images, to be used in simulations. Two different approaches (random and uniform distributions) were used to alocate the fiber inside the limits of the filter medium. The OpenLB library, which uses the mesoscopic approach lattice Boltzmann method based on kinetic of gases, was used to calculate the gas flow and estimate the pressure drop through the filter medium. A free slip boundary condition was implemented in OpenLB code, using the mesoscopic approach of specular reflection of the distribution functions. This boundary condition was then applied on the fibers surfaces, with the purpose of correctly represent the slip flow regime. The free slip boundary condition was verificated by simulating flows in confined duct and around obstacles, and the results were compared with data obtained by macroscopic simulations carried out on the commercial package ANSYS Fluent, which solves Navier-Stokes equations, and also with data found in literature. In filter media simulations, the free slip and no-slip boundary conditions were applied on the fibers surfaces and the numerical results of three types of filter media were then compared to experimental data. A better agreement between numerical and experimental data was observed if the free slip boundary condition was used. This confirms the need to consider the proper boundary condition in flows with high Knudsen number. Moreover, an analysis of the influence of the size of the computational domain on the pressure drop was also carried out, in order to determine the smaller size of the geometric model of the filter medium. According to the results, the pressure drop tends to become stable with the increasing of the domain, since the solid fraction is more accurate. This stabilization occurs with better agreement when the ramdon alocation of the fibers are used to distribute the fibers inside the filter medium.
Análise da distribuição espacial, funcionalidade e atratividade de áreas verdes públicas na cidade de São Carlos, SP
(Universidade Federal de São Carlos, 2018-03-19)
Gonçalves, Monica Palloni
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Peres, Renata Bovo
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https://lattes.cnpq.br/6045407453925020
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https://lattes.cnpq.br/1677351338202448
Urban public green areas are public spaces with vegetation, free (total or partial) waterproofing, which perform ecological, landscape, social, cultural and recreational functions, among others, generating an increase in sociability, aesthetic, functional and environmental improvements in cities. In view of the benefits promoted by these areas, and considering the lack of privilege that the free spaces are approached in the planning and the lack of systemic perspective of them, the motivation of this research appeared on whether the public green areas are qualified for use; if there are relations between regions with more qualified areas and income; and how the population uses and perceives the importance of these areas. The general objective was the analysis and the relation between spatial distribution, functionality and attractiveness of people in public green areas in the city of São Carlos, SP. The paper was structured in three parts, with introductory elements in the first, development of two articles in the second and final considerations in the third. The first article analyzes the qualification of green areas for use, and their relation with the spatial distribution, vegetation concentration and income of the population. The second brings analyzes of uses, functions, and attractions, considering qualitative criteria and the environmental perception of the regulars. A bibliographic research, the use of geoprocessing tools, functional investigation forms and perception questionnaires were carried out. The results indicated 779 areas available for the leisure green area system, but 463 were considered only partly qualified for use. There was a greater amount of qualified green areas in higher income areas, and partly qualified and unqualified green areas in peripheral regions. There is attractiveness to the practice of physical activities, leisure, contemplation, well-being, commerce and work, indicating a potential for multiple uses of the public dimension. It is necessary that the management of green areas be integrated with urban planning, holistically and systemically designed to be part of the daily life of the city, and not only represent obligations of minimum amounts to create lots.
Extending User Interface Design Patterns with accessibility recommendations to guide mobile developers
(Universidade Federal de São Carlos, 2018-03-19)
Casadei, Vitor
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González, Sahudy Montenegro
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https://lattes.cnpq.br/9826346918182685
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Zaina, Luciana Aparecida Martinez
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https://lattes.cnpq.br/0192085115595443
With the dissemination of mobile devices and the migration of activities that were once executed only on desktop computers to smartphones and tablets, the concerns related to accessibility in this environments have increased. Accessibility barriers can directly affect the access of information: a user with difficulties on accessing important information can become frustrated, absorbing the content with difficulty or even not being able to assimilate any information. The difficulties encountered by a great variety of users on mobile devices adds new challenges to the task of creating accessible applications for everyone. However, the accessibility impact of mobile interface design patterns in the life of disabled people has not been widely addressed in academic works. At the same time, the community of mobile designers and developers has made significant advances in identifying accessibility issues with design patterns on mobile interfaces, reporting these findings in virtual spaces of discussions as forums and blogs. Against this scenario, this project proposes recommendations that will help to mitigate or eliminate the accessibility barriers created by Interface Design Patterns on mobile applications. These recommendations were created based on two main studies. The first study was an accessibility evaluation based on interaction design patterns in an e-learning application containing 21 participants without disabilities that collected the emotional response to seven design patterns and video analysis using communicability metrics. While the second study aimed to explore the experiences and knowledge of professionals through an ethnographic study in 18 virtual communities of mobile design and development with the goal of identifying issues on the accessibility of Android mobile interface design patterns. This work presents two main contributions. It presents an approach to support the employment of virtual ethnography studies in software engineering as means to observe software development practice based on the information available in online communities. It also proposes 22 recommendations of 11 Interface Design Patterns and 11 Cross-section elements of mobile applications with the goal of improving the overall accessibility of mobile devices.
Estudos sobre o “status” populacional de Rhea americana, (Linnaeus, 1758) na Estação Ecológica de Itirapina - SP
(Universidade Federal de São Carlos, 2018-03-19)
Bergel, Mariano Maudet
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Rocha, Vlamir José
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https://lattes.cnpq.br/8044368595391973
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https://lattes.cnpq.br/9379382097270338
In the central region of the State of São Paulo, in the municipalities of Brotas and Itirapina, the Ecological Station of Itirapina (EEI, in portuguese) is located, which together with the Ecological Station of Santa Bárbara, presents one of the few places where one can observe areas of open phytophysiognomy of the Cerrado . The EEI is considered an important area for birds and biodiversity (IBA) due to the presence of migratory species, endemic and endangered species such as emas (Rhea americana). Previous studies have recorded small flocks of emas living in the EEI in the 1980s, but the presence and size of this population is currently declining. Thus, the objective of this work was to evaluate the situation of the american Rhea population in the EEI, to discuss the feasibility of reintroducing captive birds for the species reinvigoration, as well as the threats to this population and evaluation of the methodology used. For that, motorized transects, walking and fixed observation points were established as a strategy to detect birds. At the end of 13 months of study, more than 1,000 kilometers traveled and 162 hours of active search, 29 traces of footprints and three views of a single adult individual were recorded by the IEE inspection team. Considering the various references related to Rhea americana in the literature, as well as the results obtained in this study, it is believed that the emas population in the ISS is in a situation of great vulnerability, with strong evidence that there is only one individual using this conservation unit. Many factors directly affect the survival of the emas in the EEI and make it difficult to reinvigorate these birds. However, if we consider the various benefits of increasing the population of this species that, in addition to being threatened with extinction, also participates in the connectivity between forest fragments, increases the germination and dispersion of some large and medium sized seeds, as well as interacts with different chains food being prey and preying simultaneously, it is believed that it is highly beneficial to the entire local ecosystem to carry out an action of population reinforcement of captive emas in the Ecological Station of Itirapina.
Um estudo das práticas de disseminação de informação de contratos administrativos nos portais eletrônicos das universidades federais da região sudeste
(Universidade Federal de São Carlos, 2018-03-20)
Santos, Lincoln Kennedy dos
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Ferraz, Maria Cristina Comunian
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https://lattes.cnpq.br/2893153253924855
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https://lattes.cnpq.br/7543735545412818
Social participation is fundamental to the control of state action, ensuring transparency to acts of Public Administration. Fiscal transparency is established for in Complementary Law 101/2000, ensuring transparency as a mean of control and inspection. The 12.527/2011 Law institutes as a fundamental principle that access to public information is the rule and secrecy the exception. Due to the importance of this theme, considering that currently the sharing of information occurs through the internet, this research aims to clarify the dissemination practices of information on administrative contracts in the portals of the federal universities of the Southeast region, which promote the strengthening of participation of the citizen and community. It seeks practices that go beyond the legal requirement, highlighting the best characteristics that portals must present for the availability and access to administrative contracts, emphasizing the importance of the availability of complementary information relating to contracts required for comparisons and various analyzes. In this exploratory and descriptive research, the content analysis method with the creation of a form for data collection is used to increase the possibility of discoveries during the research. The public administration is contextualized by means of theoretical reference, focusing on publicity and transparency of administrative contracts, on the structure of government portals and the availability of information relating to administrative contracts. The laws relating to administrative contracts, fiscal responsibility, corruption against public administration and access to information are presented. The results provide a scenario of how publicity of information on administrative contracts is being done in the portals of the studied universities, allowing the possibility of improvement in the method of availability and access of this information. Finally, in this process of public management, information management and public transparency, despite advances in the intention of transparency of public acts, it is understood that much must be done for efficiency to be achieved. It is considered fundamentally, as defined by the Access to Information Law, 12,527/2011 Law, that the Public Administration has to be proactive in availability of information regardless of requests.
Os bastidores da educação primária: criação e expansão das escolas isoladas rurais em municípios do interior paulista (1889 –1921)
(Universidade Federal de São Carlos, 2018-03-20)
Jesus, Adriana do Carmo de
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Bezerra, Maria Cristina dos Santos
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https://lattes.cnpq.br/1095065753077001
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https://lattes.cnpq.br/2373073981672723
This work has as main objective to deal with the creation and expansion of isolated schools in the interior of São Paulo between the years 1889 to 1920 – the first 31 years of republic. The isolated schools were unidocent elementary education institutions that served at the same time and in the same space students of different ages and levels of knowledge. We understand that it was the economic development of the state of São Paulo started in the mid-nineteenth century - with the coffee-based agricultural expansion and accompanied by a railway network that linked cities and attracted a large population contingent – which made possible the emergence of a dynamic center in southeastern Brazil, especially in what we know today as Rio de Janeiro, Minas Gerais and São Paulo states, as well as the expansion of public schools in inland municipalities in the first decades of the 20th century. From this perspective, this period can be understood as a "watershed" in the organization of the free, secular and compulsory public education system. In these decades, schooling was, above all, part of a political program to solve Brazilian problems, so that it incorporated large sections of the population into the civilizing process. Political participation was linked not only to census voting but, to the process of schooling, however, this process already in the early years of the Republic did not mean a good school for all, especially in the state of São Paulo and to understand the expansion of elementary public schooling, it is necessary to understand the history of Brazilian education in the republican period, also understanding that the diffusion of the school groups was not established in a homogeneous, natural and linear way, as if we had first the isolated school that became schools reunited and sometime later the leaders realized that it was viable the transformation of these schools reunited in school group.
Indicadores da participação feminina na comunidade docente da Universidade Federal de São Carlos em 2017
(Universidade Federal de São Carlos, 2018-03-20)
Minotto, Ana Aparecida Pires
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Rigolin, Camila Carneiro Dias
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https://lattes.cnpq.br/2388584081961836
To know the female situation and the gender relations in the scientific world contributes to the elaboration of strategies of shifts in the institutional structure of science. These changes are part of the search for gender equity in the academic setting. It is not just about increasing the participation of women in science and technology by increasing and stimulating access. It is necessary to recognize and unveil the sexist biases that are inherent to institutionality and are present among the lines of scientific culture, in search of the transformations of gender relations in science and technology, with the intent of keeping women in the academy and aiming at breaking the "ceiling glass". Thus, this descriptive and exploratory work aims to construct indicators of the participation of female professors in science and technology in a public institution of higher education and research and is guided by the following question of research: how to configure the distribution of female scholars in the scientific community of UFSCar in areas of knowledge, hierarchy and scientific leadership in the year 2017? We sought to identify indicators of female participation in the teaching community of the Federal University of São Carlos (UFSCar), referring to the year 2017. Documentary sources such as institutional reports, the Lattes Platform and the Directory of Research Groups of the National Council of Scientific and Technological Development (CNPq) were used in the research. The data portrays the participation of women in the teaching staff, the leadership of research groups, in the approval of research productivity grants from CNPq and in the exercise of trust functions. In order to analyze these data, the theoretical framework addresses the literature on gender and science derived mainly from Social Studies of Science.
Relações entre habilidades metacognitivas, habilidades sociais, planos e saúde mental em cuidadores familiares que assistem idosos dependentes
(Universidade Federal de São Carlos, 2018-03-20)
Isaac, Letícia
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Barham, Elizabeth Joan
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https://lattes.cnpq.br/9868595523538592
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https://lattes.cnpq.br/0252851723116971
Many people who assist their dependent elderly relatives have trouble finding the time and energy for activities that are important for their mental health. In this study, a model was proposed to indicate skills that may affect a caregiver’s ability to establish plans that are important to their mental health and well-being, such as metacognitive skills (monitoring and self-regulation), social skills, and the ability to establish viable goals. Interviews were conducted with 30 caregivers, including 28 women and 2 men, with an average age of 57.5 years (SD = 11.09), concentrated in socioeconomic classes B and C, and who resided in the interior of the state of São Paulo. The participants responded to the following instruments: open questions about planning adjustments in care routines, Social Skills Inventory for Caregivers of Elderly Family Members, a Life Plans register, Zarit Burden Interview, and Beck Depression Inventory II. The results showed that caregivers own socioemotional wellbeing and the elderly person’s health were constantly monitored by the caregivers. To handle demands related to the caregiving context, about two-thirds of the caregivers enlisted the help of family members, friends, and professionals. However, half of the caregivers reported managing new or unexpected demands on their own, and this was often their only strategy. With respect to their social skills, the caregivers reported having a good repertory of skills, with their greatest strength being affective expression. More than half of the participants reported light to moderate perceptions of burden and depressive symptoms. In terms of their plans for the future, the caregivers mentioned more plans related to health and leisure activities. Eight categories were developed to capture differences in the quality of the plans. Plans for the maintenance of valued activities were most frequently mentioned, followed by plans that were classified as vague, and then viable plans. Scores for each factor of the social skills, burden and depressive symptoms measures were then correlated with the number of plans in each of the eight categories. Assertive Communication skills were positively related with the number of Viable Plans (r = .38, p = .04), the number of Vague Plans was positively related with perceptions of burden involving Emotional Tensions (rho = .39, p =. 03), while the number of Plans being Implemented was negatively related to Emotional Strains (rho = -.41, p = .02). Thus, in consonance with the proposed model, in this study, there is some initial evidence that metacognitive abilities and social skills may be important in the process of constructing viable plans for the future, which, in turn, seem to affect caregivers’ mental health. If researchers continue to find evidence in support of this model, these concepts can be used to develop and evaluate interventions to help caregivers make better use of skills that can improve their ability to construct viable plans, which may contribute to reducing perceptions of burden and the experience of depressive symptoms.
Meta-avaliação das políticas de cotas : um estudo de processos nas universidades estaduais paranaenses
(Universidade Federal de São Carlos, 2018-03-21)
Souza, Andreliza Cristina
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Rothen, José Carlos
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https://lattes.cnpq.br/1942510389127549
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https://lattes.cnpq.br/3700985924661176
This thesis have accomplished a meta-evaluation of quota policies in Paraná’s state public universities. The general objective was to analyze the evaluations processes regarding the similarities and differences, potentialities and limits, as well as to verify which strategies and procedures were used more frequently for this kind of evaluation. The thesis is that the evaluation of quota policies has fragility in reason it is not carried out according to the theoretical and methodological foundations of the evaluation due to the political tension around the quotas. In order to base this research, discussions contemplated philosophical and epistemological assumptions of evaluating as a research field (AFONSO, 2009; FERNANDES, 2010; DIAS SOBRINHO, 2002; 2003a); definitions and interfaces between state and public policies were presented, and a brief discussion about the state as a provider versus a governor; the concepts of focal policies and affirmative actions were presented; and the influence of Durban Conference and its unfolding on expanding access to higher education. The instruments for collecting data were: documents – quota policy’s performance and evaluation processes; and interviews – actors enrolled in this context, systematized with content analysis method. For policy analysis was used the polity cycle (BOWE; BALL; GOLD, 1992; BALL; MAGUIRE; BRAUN, 2016), and has shown that: a) institutions analyzed had similar motives for vacancy reservations: institutional and social influences and the democratization of public schools; b) national debates about affirmative actions had great influence over these institutions; c) racism, conservative positions, resistance from institutions and/or actors and the reasoning that implies quality losses has made impossible to install racial quotas in three of the analyzed institutions; d) each institutions has defined their own model for policies; e) in some cases, the way the text was written limited access to black students or students from public schools. The meta-evaluation (SCRIVEN 2009; STUFFLEBEAM 1981; 2001; 2011; WORTHEN; SANDERS; FITZPATRICK, 2004) revealed that: a) two institutions did not carry out evaluation/monitoring, although there was a forecast of quota’s policy evaluation; b) these were evaluations of processes, of the ex-post kind, made by members of the institutions; c) the evaluators had a partial position in the realization of the evaluations; d) this bias, in the sense of confirmation of the policy, favored the debate on quotas, as well as its permanence as an access policy; e) the propensity of some actors to evaluate the quota policy in favor of their legitimation may have concealed relevant factors that have affected the effectiveness of this affirmative action; f) evaluations attended the criteria of precision, data importance, relevance and dissemination; g) criteria of reliability, credibility and cost x efficiency were not met. It was concluded that the evaluation process was feared by the institutions, specially by the actors involved in the approbation of policies, not effectively occurring for fear that the evaluation were be used as an instrument for denying quotas and reduce access in higher education. It is necessary to discuss quotas. Amongst the considerations stands out need to further discussions of quotas, qualify evaluation processes, to form technical staff, to develop methods and strategies suitable for different situations and knowledge production about evaluation as an epistemological field.
Desenvolvimento de novas ligas quasicristalinas à base de alumínio
(Universidade Federal de São Carlos, 2018-03-21)
Wolf, Witor
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Bolfarini, Claudemiro
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https://lattes.cnpq.br/9231627080617037
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Botta Filho, Walter José
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https://lattes.cnpq.br/8956458007749112
Quasicrystalline phases are known for presenting particular crystallographic characteristics that make them a separate group of solid materials. Most of these phases are Al-based and they form in compositions near complex intermetallic phases. Many of these intermetallic phases are called quasicrystalline approximants due to the similarity of their atomic structures. This work presents the development of quasicrystal-forming alloys, which have low friction coefficient and low surface adhesion energy, aiming to discover new quasicrystal compositions. Fabrication of quasicrystalline alloys was performed by starting from known quasicrystal compositions and then modifying them by the addition of elements that could potentially enhance corrosion resistance such as Cr and Ni. Arc melting and melt spinning were used in the fabrication of these alloys. The metallic system that showed to be more suitable for obtaining the quasicrystalline phase, Al-Cu-Fe-Cr, was selected for a detailed study using combinatorial approaches for fabrication and characterization of alloys so the composition range where the quasicrystal forms in this system could be found. This strategy makes use of advanced techniques such as magnetron co-sputtering and high-throughput X-ray diffraction and energy dispersive X-ray spectroscopy. One of the quasicrystalline alloys was selected and fabricated by atomization, followed to thermal spraying by High Velocity Oxygen Fuel to manufacture coatings, which were studied regarding phase formation and stability as well as wear behavior and surface adhesion energy. This coating fabricated with a new composition showed the formation of quasicrystalline phases as expected. Surface properties such as low coefficient of friction and low surface adhesion energy were observed in the samples.
Vitrocerâmicas condutoras de íon lítio com estrutura do tipo Nasicon baseadas no sistema Li1+X CrX (GeY Ti1-Y)2-X (PO4)3
(Universidade Federal de São Carlos, 2018-03-22)
Nuernberg, Rafael Bianchini
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Pradel, Annie
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Rodrigues, Ana Candida Martins
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https://lattes.cnpq.br/4499231813051400
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https://lattes.cnpq.br/6261224924264220
The primary goal of this work is to develop a new NASICON-structured glass-ceramic with high Li-ion conductivity. Therefore, this work introduces a new series of NASICON-type compositions based on the Li1+xCrx(GeyTi1-y)2-x(PO4)3 system. At first, a specific glass-ceramic composition of this system was synthesized by the melt-quenching method, followed by crystallization. The crystallization behavior of the precursor glass was examined by differential scanning calorimetry and infrared spectroscopy. The results indicate that the precursor glass presents homogeneous nucleation, has considerable glass stability and crystallizes a NASICON-like phase, which allows solid electrolytes to be obtained by the glass-ceramic route. As a second step, we examine the effect of substituting Ti by Cr and Ge on the glass stability of the precursor glasses, on the structural parameters of NASICON-like phase and on the electrical properties of the glassceramics. Hence, a set of sixteen compositions of this system was synthesized. The results indicate that the glass stability increases when Ti is replaced by Ge and Cr. After crystallization, all the glass-ceramics present NASICON-like phase, and their lattice parameters decrease with Ge and increase with Cr content, making it possible to adjust the unit cell volume of the structure. Furthermore, the ionic conductivity and activation energy for lithium conduction in the glassceramics are notably dependent on the unit cell volume of the NASICON-type structure, achieving total ionic conductivities of up to 3x10-4 Ω−1cm−1. Finally, the electrochemical stability window of the NASICON-structured glass-ceramics of highest ionic conductivity is investigated. Cyclic voltammetry measurements were followed by in situ electrochemical impedance spectroscopy, enabling the effect of oxidation and reduction reactions on the electrical properties of the investigated glass-ceramics to be determined. X-ray photoelectron spectroscopy, in turn, was applied to determine which chemical species undergo reduction/oxidation. Our findings reveal that the electrochemical stability of this material is limited by the reduction of Ti+4 cations at low potentials and by the oxidation of O-2 anions at high potentials. A similar behavior at high potentials was also encountered for other well-known Li-ion conducting NASICON-like phosphate suggesting that the electrochemical behavior in oxidative potentials could be generalized for NASICON-structured phosphates.
Positively curved Killing foliations via deformations
(Universidade Federal de São Carlos, 2018-03-22)
Caramello Junior, Francisco Carlos
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Hartmann Junior, Luiz Roberto
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https://lattes.cnpq.br/4217613854338579
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Töben, Dirk
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https://lattes.cnpq.br/0022267686144981
We show that a manifold admitting a Killing foliation with positive transverse curvature and maximal defect fibers over finite quotients of spheres or weighted complex projective spaces. This result is obtained by deforming the foliation into a closed one, while maintaining transverse geometric properties, which allows us to apply results from the Riemannian geometry of orbifolds to the space of leaves. We also show that the basic Euler characteristic is preserved by such deformations, which provides us some topological obstructions for Riemannian foliations.
Vidros fosfatos com tungstênio: incorporação de cátions alcalinos e sua influência nas propriedades estruturais e condutoras
(Universidade Federal de São Carlos, 2018-03-23)
Munhoz, João Fernando Villarrubia Lopes
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Nalin, Marcelo
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https://lattes.cnpq.br/3349586880746735
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https://lattes.cnpq.br/6368056523452713
Many glasses have been studied as solid electrolytes in behalf of replacing commercial liquid electrolytes. However, even for the best glass compositions available in the literature, values of conductivity similar to those presented by liquids are far beyond to be achieved. This work intends to show how changes in the structure, by means of composition, can help to increase the conductivity in oxide glasses. Samples with composition x WO3 - 0.30 (NaPO3)n - (0.70-x) NaF, with 0,30 ≤ 𝑥 ≤ 0,60;, were produced by melting quenching methodology. Substitution of tungsten for sodium fluoride generates a linear decrease of glass transition temperature while the stability remains high enough up to 𝑾 = 𝟒𝟎 %𝒎𝒐𝒍 and decreasing for higher WO3 content. Raman and 31P and 19F 1D MAS-NMR spectroscopies data shows that the less NaF leads to a depolymerization of main phosphate chains, due to formation of 𝑷 − 𝑶 − 𝑾 bonds. In addition, fluorine atoms prefer to bind in the 𝑷 − 𝑭 form, with low tungsten content, or in 𝑾 − 𝑭, with high proportion All samples showed same calculated values of Ea for ionic conductivity and drop of σ0. For higher fluoride proportion, it was observed a rise in the conductivity of around one order of magnitude. However, UV-Vis absorption curves demonstrate more presence of W5+ species in samples with 𝑾 ≥ 𝟓𝟎 %𝒎𝒐𝒍. This leads to a mixed conductivity of these materials. In order to obtain maximum ionic conductivity, NaF and (NaPO3)n were replaced by Li2O and (LiPO3)n respectively. Samples with composition x WO3 – 0.40 (LiPO3)n – (0.60-x) Li2O, with 0.30 ≤ 𝑥 ≤ 0.50; 0.40 WO3 – y (LiPO3)n – (0.60- y) Li2O, with 0.30 ≤ 𝑦 ≤ 0.50 and z WO3 – (0.80-z) (LiPO3)n – 0.20 Li2O, with 0.30 ≤ 𝑧 ≤ 0.50; were also produced using the melting quenching methodology. The three series of samples presented linear increase of Tg with their respective substitutions, besides having good thermal stability (> 100 °𝐶). Raman and 31P 1D MAS-NMR spectroscopies data exhibited the influence of WO3 content on the depolymerization of phosphate chains, as well as the formation of WO6 unit clusters, when much tungsten is present. Although UV-Vis absorption spectra indicate mixed conductivities in some samples, calculated values of ionic conductivity show that the most conductive sample without presence of reduced species reached 6.3 10−4Ω−1𝑐𝑚−1, comparable to conductive crystalline samples.
Secagem de cevada: análise da anatomia e do meio de transporte
(Universidade Federal de São Carlos, 2018-03-23)
Felizardo, Marcos Paulo
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Freire, José Teixeira
;
https://lattes.cnpq.br/2270677706718167
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https://lattes.cnpq.br/2619821530278648
Despite the recent motivations for application in the food industry, the characterization of polished barley grains is still scarce in the literature. In this way, the objective of this work was the experimental analysis of the effects of the plant anatomy and the transport medium on the drying process of the barley grains. The polishing experiments of the barley grains were carried out in rotary drum coated with sandpaper. Experiments were carried out to evaluate the extensive physical characteristics of barley grains at different polishing levels and ground barley grains and their parts, as well as the characterization of the physical properties of the porous media formed for these materials. For these materials, the transport properties were measured, such as: effective thermal conductivity in stagnant medium, permeability, minimum fluidization velocity and effective mass diffusivity. Finally, the transfer of heat and mass to polished grains (without external tissues) and whole grains were evaluated by means of experimental measurements. In addition, the drying media were compared with isolated submerged particle, fluidized bed, fixed bed with interstitial flow (perpendicular) and fixed bed with tangential flow. It was verified that in different levels of polishing the variations were more significant in the thickness of the grains in relation to the other dimensions, besides this in the specific masses of the porous media were identified variations and these were correlated with the variations of the grains due to the polishing. The rotary drum polishing process allowed the removal of external tissues, where for 5 days of polishing the effects of these tissues on the properties of the polished grains were not observed. For this time was removed (24.2 ± 3.6)% of surface mass. The discussion of heat transfer and mass was carried out through the characterization of the grains and drying media. The external tissues were shown to be a barrier to heat transfer and mass, besides being a superficial mechanical resistance in the barley grains.
A Formação do nutricionista para atuação na Atenção Básica na perspectiva de docentes
(Universidade Federal de São Carlos, 2018-03-23)
Zeminian, Larissa Baungartner
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Sampaio, Sueli Fatima
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https://lattes.cnpq.br/0737750473446351
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https://lattes.cnpq.br/9316739090285622
This qualitative study aims to analyze the nutritionist training in order to work in Primary Health Care from the perspective of lecturers of Higher Public Education Institutions (HPEI) in the southeast of Brazil, through the application of questionnaires containing questions about the participants’ characterization and the students’ training to work in Primary Health Care. The 21 lecturers of 13 HPEI who participated in the study, pointed out the theoretical references used and issues addressed in the teaching of Nutrition, as well as the strategies used in theoretical and practical approaches and traineeships. The results were organized in the following categories: Nutritionist Training in Primary Health Care: theoretical framework, Nutritionist Training in Primary Health Care: from issues addressed to in practice, The training from both theoretical and practical approaches, being discussed in the light of Collective Health, Single Health System of Brazil (SUS – Sistema Único de Saúde), the nutritionist training, the nutritionists’ responsabilities in Collective Health and with the support of the researcher’s own experiences. It is concluded that the theoretical frameworks related to Primary Health Care are strongly approached by the lecturers in their subjects, including those of intersectoral and educational approach, which broadens and qualifies the training; the Primary Health Care consists of a very powerful playing field for having great solving, being an important place of health upgrading and providing a fulfilling job to the professional in the activities with the population, however, its physical structure, professional motivation and resources for nutritional assessment need to be revisited. It is also concluded that public polices of health and nutrition favor the training of the nutritionist to work in Primary Health Care, requiring a more consistent relation, aiming effectiveness in health actions.
Biocompósitos de liberação controlada/lenta de fertilizantes: avaliação em solo pela técnica Reflectometria no Domínio do Tempo
(Universidade Federal de São Carlos, 2018-03-23)
Medina, Ângela Fracon
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Souza, Claudinei Fonseca
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https://lattes.cnpq.br/4858219292242433
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Faez, Roselena
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https://lattes.cnpq.br/0654750186618555
The use of fertilizer in agriculture is a widely used practice in the agricultural scenery. Over the years, the need to rise productivity in the growing areas will be inevitable in the face of population growth, reflecting the increased use of fertilizers and water. In this scenario, new technologies have emerged as a way of optimizing the amount of fertilizers used. One of the alternatives is the use of materials that release the nutrient in a controlled or slowly way, denominated fertireleasers. In this work, fertilizer materials based on a natural and biodegradable polymer, chitosan, were evaluated for their efficiency in the release of fertilizers in water and soil. The chitosan was used both with KNO3 fertilizer and montmorillonite clay, producing microspheres, microcapsules and macrospheres. The materials were inserted in the soil and the release of ions was analyzed by the Time Domain Reflectometry (TDR) technique. The measurements were made from probes inserted in containers containing sandy soil, with and without field capacity monitoring, getting results of humidity and electrical conductivity. The microcapsules present a slower release behavior in both water and soil, attributed to core-shell encapsulation. In spite of the rapid release in water (2h) the materials (QF2F, QAF2F, QRF2F, QRAF2F, QF3F, QAF3F, QRF3F e QRAF3F) presented continuous release in soil during the period of analysis (~100 days). Additionally, the release is dependent on water and since some materials retained water (QF3F, QAF3F), similar to hydrogels behavior. We concluded that the microspheres, microcapsules and macrospheres have different release in water and soil and this is characteristic of the composition of each material. It is worth noting that TDR, besides determining the ionic mobility in the soil, also allowed to evaluate other characteristics of the material such as the dependence of the release with the water, the hydrogel behavior, and the degradation of the material as a function of the lifespan.
Friction surfacing of aluminum alloy 5083-H112 over AA 2024-T3
(Universidade Federal de São Carlos, 2018-03-23)
Silvério, Samuel Hernandes
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Alcântara, Nelson Guedes de
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https://lattes.cnpq.br/3123107570992184
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https://lattes.cnpq.br/6403909108828767
Friction surfacing (FS) is an advanced solid-state process in surface modification with increasing applications in reclaiming worn parts, hardfacing and corrosion protection. It is considered a derivation of the friction stir welding process, keeping many benefits of the primary process such as: solid phase, forged microstructure and excellent metallurgical bond. As no melting takes place, the process allows dissimilar joining of materials while avoiding several fusion related problems. The present study addresses the deposition of AA5083-H112 coatings over AA2024-T3 substrates, focusing on the influence of the thermo-mechanical process in the mechanical properties and geometry of the deposits. A performance and geometric analysis of the depositions are also presented. Sound aluminum coatings were produced; plastic deformation and heat generation promotes a dynamic recrystallization of the anisotropic consumable rod, resulting in a fine and homogeneous deposit, free of any previous deformation. The coating presented an increase in ultimate tensile strength and failure deformation of 9% and 6%, respectively. Deposition efficiency between 25 and 50% were obtained, with a maximum of 48% average efficiency observed with 800RPM, 12kN and 16mm/s.
O Pensamento Lean na gestão de processos de mobilidade acadêmica nacional em uma instituição de ensino superior pública: um estudo de caso
(Universidade Federal de São Carlos, 2018-03-23)
Petrilli, Fernando Moura Fabbri
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Martins, Manoel Fernando
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https://lattes.cnpq.br/3921504261628850
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https://lattes.cnpq.br/4424203999560942
In the Brazilian Universities, one of the great possibilities of complementary formation with strong academic, cultural and social enrichment for students, teachers and technical-administrative is the participation in programs of academic mobility. In order for academic mobility to take place, a series of actions are necessary to ensure the success of its proposal, from the dissemination of opportunities to the return of the exchange student to his home institution. "Lean Thinking", has its origins in the automotive industry and has promoted a revolution in industrial management models by directing its actions to the customer's interests, through continuous process improvements, elimination of waste and focus on total quality. As a result, the successes achieved by this management method have been adapted to improve processes in other sectors, such as administrative services, including those related to public administration, and the Lean Office has emerged. In this context, the present work aims to present a case study about the management of processes directed to Academic Mobility in a Federal Institution of Higher Education by the methodology of mapping SIPOC processes. The results obtained demonstrate the existence of operational waste points in the actions carried out and present suggestions for improvements in the processes so that the activities are more objective and agile to all involved
Efeitos do exercício prolongado sobre a contratilidade cardíaca de uma espécie de peixe migratória, Brycon amazonicus (Teleostei, Characidae)
(Universidade Federal de São Carlos, 2018-03-23)
Rissoli, Rafael Zanelli
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Kalinin, Ana Lúcia
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https://lattes.cnpq.br/5493936744279888
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https://lattes.cnpq.br/5838813282371566
The present work described the effects of exercise-training (60 days) at different intensities 5 cm.s-1 (EL), 10 cm.s-1 (EM), 20 cm.s-1 (EMI) and 30 cm.s -1 (EI) on relative ventricular mass (RVM), in vitro ventricular contractility and proteins expression of excitation-contraction coupling proteins in the ventricular tissue of Brycon amazonicus, a very active fish species with migratory habits. The majority of exercise intensities did not alter the RVM, except for the EMI group where a reduction was observed in relation to its respective CT group. EL and EM groups presented more relevant increases on ventricular force generation, suggesting that the studied species show different adaptations in the capacity of contractile force generation (Fc) in the following the exercise intensity. It may be suggested that conditions imposed by the rigorous exercise protocols (EMI and EI groups) did not cause improvements in contractile performance. The present results indicate that all groups exhibited modulations of the E-C coupling components. The Ca2+ influx via NCX was important in all groups, and the relative role of RS varied considerably between groups. In EL group, the RS contribution was essential for the force generation under a wide range of estimation frequencies (0.2-1.8Hz) whereas in the RS and EM and EMI groups the RS action was only relevant at high frequencies (1.0-1.8Hz). In the EI group, the functional inhibition of RS did not cause reductions in Fc values in all analyzes frequencies, indicating that the LTCCs and the NCX took the lead during the force generation. In addition, the exercise protocols triggered different expression rates of the E-C coupling components. The EL group presented higher NCX expression rates and lower SERCA2 rates but did not alter PLB expression. The EM group presented higher expression rates of NCX and PLB, and lower SERCA2 rates. Both EMI and EI exhibited elevations in the LTCCs, NCX and SERCA2 expression rates but did not alter the PLB expression. The data generated in the present work revealed that the ventricular E-C coupling of B. amazonicus presents great plasticity in response to the exercise, modulating the relative roles of its components in accordance with the intensity of the exercise training.