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Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas
(Universidade Federal de São Carlos, 2019-09-04)
Pelissari, Pedro Ivo Batistel Galiote Brossi
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Pandolfelli, Victor Carlos
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https://lattes.cnpq.br/7369376873984839
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https://lattes.cnpq.br/1402623804537094
High temperature processes are of great importance as they are widely applied in the manufacture of commodities, consumer goods and advanced materials. For these processes to be possible, the thermal environment in which they occur must consist of materials with special features, called refractories, for which their structure at different scales, nano to micro, influence directly their thermal and mechanical performance. The development of high-performance advanced refractory ceramics has been using techniques of theoretical modelling of the materials properties in order to correlate these features, making it possible to improve their performance. This trend is based on the use of computational tools, such as numerical simulation, to evaluate the impact of different structural characteristics on the properties of materials. Thus, the main goal of the present thesis was to use different numerical methods in order to assist the microstructure design of refractory materials for structural and thermal insulation applications. The impact of different microstructural descriptors, such as pore size and distribution, was evaluated for the thermal and mechanical properties of thermal insulating ceramic foams. It was observed the existence of an optimum pore size in the 0.5 to 3.0 m, range which reduces the effective thermal conductivity of these materials to a minimum for temperatures above 1000 °C. In the case of structural materials, it was also developed a bioinspired refractory with engineered microstructure presenting high mechanical performance at room (σf = 672.0 MPa and KIC = 7.4 MPa. m1/2) and high temperature (σf = 350.0 MPa and KIC = 6.0 MPa. m1/2), 1200 °C. The development and characterization of this latest material was carried out in conjunction with the Zurich Federal Institute of Technology (ETHz) and Imperial College London. Additionally, thermo-optical simulations were used to evaluate the thermal performance of these structures for a likely application as thermal barriers.
Estrutura e qualidade ambiental dos riachos costeiros na ictiofauna e suas redes tróficas de uma região neotropical
(Universidade Federal de São Carlos, 2019-09-04)
Santos, João Alberto Paschoa dos
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Moura, Evelise Nunes Fragoso de
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https://lattes.cnpq.br/6561803596789261
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Peret, Alberto Carvalho
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https://lattes.cnpq.br/0995579236780271
To determine the composition, distribution and trophic relations between fish species in streams located in Bertioga-SP sandbank and to evaluate if the environmental characteristics influence this system are the main objectives of this thesis. Fish from 11 clearwater and darkwater streams were sampled using electric fishing over a year. The stomachs of the 11 most abundant species of the 26 species recorded throughout the study were analyzed. The unique species of clearwater streams were Acentronichthys leptos, Characidium japuhibense, Characidium lanei, Kronichthys cf. heylandi, Pseudotothyris obtusa, Rhamdioglanis frenatus, in addition to the marine / estuarine species Awaous tajasica, Centropomus parallelus and Dormitator maculatus, while only Hyphessobrycon bifasciatus was unique in blackwater environments. The trophic webs were similar in the streams comparing the dry and rainy periods. Allochthonous and autoctone organic material was similarly consumed among fish species, showing no preference for origin. The species with the highest number of relationships were Gymnotus pantherinus, Mimagoniates microlepis and Hollandichthys multifasciatus. Spintherobolus broccae is endangered. Thus, the preservation of the Conservation Units Serra do Mar State Park and Restinga de Bertioga State Park are important, as they are home to species that were important for the energy relations in the nutrient cycling of the system, besides being an important region with a wide diversity and thus providing relevant ecosystem services.
Packet routing analyses using probabilistic data structures in Multi-Tenant Networks based on programmable devices
(Universidade Federal de São Carlos, 2019-09-04)
Teles Martins, Regis Francisco
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Villaça, Rodolfo
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https://lattes.cnpq.br/3755692723547807
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Verdi, Fábio Luciano
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https://lattes.cnpq.br/9143186843657940
Given the network traffic growth, due to applications that heavily use computational cloud infrastructure, the need for improving the monitoring traffic techniques has increased. For traffic engineering, it is essential to gain total visibility into the traffic flowing across the network. The most used methods for traffic monitoring in the industry are those based on dedicated monitoring protocols as SNMP (Simple Network Management Protocol), NetFlow, SFlow, among others. With processing capacity evolution of forwarding devices, new techniques have been proposed. The use of sketches has become widely popular for traffic monitoring tasks. Sketches are compact data structures capable of summarizing and store information about the state of packets. Using sketches, it is possible to monitor a network traffic, understanding the path travelled by each packet and which devices were responsible for the packet forwarding. Analyzing traffic over the network is a challenge that changes the traditional monitoring approach. The current performance indicator metrics provided by network devices are not enough to analyze and create insights for the network traffic as a whole. We need a way to produce key performance indicators that can be correlated across different network devices on the same network. This new approach opens opportunities for researching and developing novel techniques to obtain a holistic network traffic visibility, to support decisions in traffic engineering, to detect traffic anomalies and other applications. Using a single sketch named BitMatrix, proposed in this work, it is possible to monitor network traffic, understand the path travelled per packet and which devices forwarded this packet along its path. In this context, this probabilistic structure was adopted to identify the path used to forward a packet in a multi-tenant network in two different scenarios: a) in an emulated network, using P4 routers and, b) in a simulated network, processing real traffic traces, using a Python framework. As a result, overloaded routers, links and paths and heavy user tenants were identified.
Biologia de populações de peixes do Riachos da Vila de Itatinga, Bertioga, São Paulo
(Universidade Federal de São Carlos, 2019-09-05)
Lemos, Clarissa Alessandra
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Moura, Evelise Nunes Fragoso de
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https://lattes.cnpq.br/6561803596789261
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Peret, Alberto Carvalho
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https://lattes.cnpq.br/0995579236780271
The ichthyofauna is closely related to the structural characteristics of the environments in which they live, as well as are observed functional relations between substrate and marginal vegetation and the fish species, as those are the places where many species find food, also having ideal conditions for spawning and survival of the offspring, this study aims to verify if there is a relationship between the welfare of the species and the environment, based on the biology evaluation of nine fish species from Villa de Itatinga streams, in Bertioga/SP. The samplings occurred monthly, over a year, in eleven streams. The collection of limnological variables were obtained monthly with a multi-parameter water quality checker and also from sampled water analyzes. In the laboratory, the specimens were identified at the species level and the following dimensions were taken: total and standard length, total weight and after dissection when the stomachs and gonads were removed and weighed, the external repletion degree of the stomach, sex and stage of gonadal maturation were obtained. A total of nine most representative species were studied. The species that presented normality in the frequency distributions were predominant, and only females of Mimagoniates microlepis and males of Characidium lanei, Phalloceros harpagos and Kronichthys heylandi did not show normality. All species presented sex ratio different than the expected of 1:1. Female specimens of the species Deuterodon iguape, Characidium japuhybense, C. lanei, P. harpagos and Acentronichthys leptos were larger than males, while the opposite occurred in the species Hollandichthys multifasciatus, M. microlepis, K. heylandi and Scleromystax barbatus. Only C. lanei and A. leptos showed no difference between dry and rainy periods and only K. heylandi showed difference between sexes. Hollandichthys multifasciatus, C. japuhybense, females of C. lanei and A. leptos and males of D. iguape have an isometric growth, while in M. microlepis, K. heylandi, females of D. iguape and P. harpagos and C. lanei males have positive allometric growth. The species S. barbatus, P. harpagos and A. leptos females have negative allometric growth. The reproductive period of the species presented its highest peak in the rainy season, except for P. harpagos and the females of M. microlepis. The species D. iguape, K. heylandi and S. barbatus presented peaks of food intensity throughout the year, H. multifasciatus, and females of C. japuhybense and A. leptos presented their highest peak in the dry period, while the others presented in the rainy season. The relative condition factor of D. iguape, C. japuhybense, P. harpagos, A. leptos and S. barbatus, males of H. multifasciatus and females of C. lanei was higher in the rainy season, while M. microlepis, K. heylandi, H. multifasciatus females and C. lanei males had the highest relative condition factor peaks in the dry period. The study showed that there was no relationship between the limnological variables and the average relative condition factor of the species in the coastal streams of Itatinga Village, in Bertioga.
Ferramentas experimentais e teóricas aplicadas em elucidação de reações orgânicas
(Universidade Federal de São Carlos, 2019-09-05)
Leonarczyk, Ives Antonio
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Ferreira, Marco Antonio Barbosa
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https://lattes.cnpq.br/6874055640224407
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https://lattes.cnpq.br/7980697937496547
EXPERIMENTAL AND THEORETICAL TOOLS APPLIED FOR ORGANIC REACTIONS ELUCIDATION. The present thesis explore different problems involving organic reactions using the association between experimental methodologies and theoretical calculations based in DFT. The first work has shown unprecedented evidence suggesting mechanistic differences afford by the type of catalyst employed in the A3 multicomponent synthesis of 2,4-diphenylquinolines. Thus, using iron salts or montmorillonite is favorable the Povarov-type mechanism, not have been observed the propargylamine intermediate proposed by literature. The second work investigates the remote sense of 1,4 and 1,5 asymmetric induction in boron mediate aldolic reactions using -alkoxy and -bis-alkoxy methyl ketones. In this inedited study, was systematically analyzed as well the role of -alquil substituents as the stereoelectronic influence of different oxygen protecting groups in  and positions for the process. DFT calculations have shown the source of 1,4-selectivity in terms of -substituent as well the synergistic effects between the -syn and -anti-bis-alkoxy stereocenter was elucidated leading to rationalize a new model. Thus, in case of 1,5-stereoinduction in presence of -alkoxy center the reaction follows the analogous Goodman-Paton model. The last work, disclose about the combined use of different computational methods aiming conformational analysis and NMR parameters calculations ( and 3J) for aldol adducts -branched and -unbranched where the conformational flexibility shows an elucidation challenge through direct methods. The results shown a more complex conformational scenario than the current accepted by literature, where different hydrogen bonds compete for stabilize the structures in equilibrium, revealing the possible origins observed in NMR parameters, where new considerations were presented to literature model.
Estratégias nutricionais em espécies congenéricas de cerrado e floresta estacional semidecídua
(Universidade Federal de São Carlos, 2019-09-05)
Paganeli, Bruno
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Batalha, Marco Antônio Portugal Luttembarck
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https://lattes.cnpq.br/3893228815181339
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https://lattes.cnpq.br/3693747596062757
The Brazilian cerrado, although is one of the hotspots for the biology conservation, is still under pressure. One of these is related to restoration practices. This hotspot presents a huge vegetative diversity, however with predominance of savannas physiognomies. These can be defined as tropical and subtropical biomes, where the herbaceous layer is almost continuous, interrupted only by shrubs and trees at varying densities, with growth and reproductive patterns linked to climatic seasonality and to the occurrence of fires. Since savannas appear in climates that also harbour forests, only the climate is not enough to explain the occurrence of the former. One of the factors postulated to explain the occurrence of savannas in areas whose climate allows forests is nutrientpoor soils, especially regarding nitrogen and phosphorus. We analyzed the strategies presented by congeneric species, one typical of the cerrado, and the other, seasonal forest through four treatments in hydroponic system: (1) complete Hoagland solution, (2) Hoagland solution but nitrogen, (3) Hoagland solution but phosphorus, and (4) Hoagland solution but nitrogen and phosphorus. We followed the individuals measuring how long cotyledons persist, the time for the appearance of the first pair of leaves, height, leaf area, specific leaf area, root:shoot ratio, aboveground biomass and total biomass. All tests were done using variance analyses. Our results suggest that cerrado and forest species are functionally distinct, already in the early stages of their development. Both, savanna and forest congeneric seedlings are limited by nitrogen. However, changes in functional traits due to phosphorus supply evidenced their distinct nutritional strategies. While the forest species improved their functional traits — evidencing the co-limitation and higher nutritional demand —, savannas species displayed signs of toxicity, expressed by the decrease of some attributes.
A percepção de alunos do ensino médio sobre os direitos humanos
(Universidade Federal de São Carlos, 2019-09-05)
Mazari, Elenilson José
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Julio, Josimeire Meneses
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https://lattes.cnpq.br/8805879632103815
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https://lattes.cnpq.br/2886466956542043
Understanding respect for human rights as a fundamental practice for living in society and still considering the school as an environment in which these values can be intensified, this research focuses on high school students and their perceptions about such rights. The objective was to capture these visions by applying dynamics in the classroom where students positioned themselves as debaters and, therefore, built arguments in relation to the situations in which they were placed based on news of recent situations in which human rights were violated. The collection took place in a third year high school class of a private school in the interior of São Paulo and the data were collected from the organization of operative groups that, besides the research methodology, showed interesting strategies as teaching methodology. Five dynamics were used to allow students to reflect on different topics such as labor rights, ethics, religious intolerance, transphobia, criminal majority and torture. The data were analyzed from the conception of Human Rights based on recent studies, official documents and the concepts developed by philosopher Hannah Arendt, especially labor, action and public space. The students demonstrated that the misrepresented views on human rights were more linked to their common sense than to their stance on the debated cases, generally positioning themselves alongside the articles declared by the UN in 1948. In this sense, We realize the importance of creating a favorable environment for labor to become action, according to Arendt's ideas.
Participação da neurotransmissão orexinérgica nas respostas respiratórias à hipercarbia e hipóxia em iguanas verdes e girinos de rã-touro
(Universidade Federal de São Carlos, 2019-09-05)
Fonseca, Elisa Maioqui
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Bícego, Kênia Cardoso
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https://lattes.cnpq.br/0169967378071426
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Batalhão, Luciane Helena Gargaglioni
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https://lattes.cnpq.br/5850453468994497
Orexins (ORXs) are peptides produced by a group of neurons of the hypothalamus which regulate various physiological functions - such as the sleep-wake cycle, eating behavior, blood pressure, and respiration. These neurons are responsive to changes in pCO2/pH and hypoxia; and its effects on breathing involve participation in chemoreflexes. The vast majority of studies on ORXs and their contribution to respiratory modulation have been performed in mammals, especially rodents. The only work conducted in a non-mammalian vertebrate is one work from our group that demonstrated that ORX receptor-1 (OX1R) contributes to hypercarbia and hypoxia chemoreflexes in adult toads. This thesis, therefore, was designed to evaluate the role of ORXs in respiratory control in bullfrog tadpoles by recording respiratory activity in in vitro brainstem preparations; and in green iguanas through “in vivo” ventilation recordings. We observed that ORXs participate in ventilatory responses to hypercarbia in these two classes of vertebrates; but only in tadpoles they participate in ventilatory responses to hypoxia as well. In the case of the tadpoles, our experiments have shown that ORXs act in an inhibitory manner on O2 and CO2 chemoreflexes, while in iguanas, they act on CO2 chemoreflexes in an excitatory way.
A constituição da identidade do diretor de escola de educação básica negro: articulações entre a identidade étnico-racial e a identidade profissional
(Universidade Federal de São Carlos, 2019-09-06)
Ferreira, Maria Angélica Chagas
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Campos, Douglas Aparecido de
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https://lattes.cnpq.br/7847352503840983
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https://lattes.cnpq.br/2113837229212931
This research is based on the study of a social phenomenon within the school that discusses, investigates and analyzes the relations between the identity trajectory of the black school principal, when in the process of assuming a position of leadership in municipal schools in the city of São Paulo, teaching and professional knowledge built and under construction along this route (PIMENTA, 1997; DUBAR, 1997, 2006, 2012). We aim to know a little about the professional and personal history of some black school principals during the teaching period and, currently, as managers, when talking about the reality of the school, the difficulties of the profession, the school and training history, the family and the The process of ethnic-racial construction seeks to have a panorama of the visibility of blacks in charge of leadership, and whether their racial identity is perceived negatively when measuring their professional competence. We have traveled a path in search of relevant definitions such as school administration and school principal in current legislation such as Law 9394/96-LDBEN. The authors Santos. B (2003), Ribeiro. J (1982), Paro (2011, 2015), Heller (1970), Gramsci (1968, 2001) structure the initial theoretical basis of research, assisting in the perspective of democratic management. Admission to the post is via public tender, and since 2013 there is affirmative action policy legislation for public service entry in the city. In this sense, we also study important concepts such as identity, prejudice, brand prejudice, racism and affirmative action policies. The authors Gomes (1995, 2017), Hall (2013, 2014), Silva (2014), Bento (2005), Ribeiro (2017), Almeida (2019), Fonseca (2009), Nogueira (1985, 1998) help us to understand these concepts in the reality of schools. We use the oral history method, with the testimonial, interview and script techniques, with the authors Nogueira (1973), Thompson (1992), Ezpeleta and Rockwell (1986), and Thiollent and Michael (1984), who give us the basis. for methodological organization. We organized an interview script, which was held in schools with black school principals, some freshmen and some older in the role. We interviewed male and female principals in their daily lives, we know the realities of schools and people in vulnerable situations who see a bridge in the school for better living conditions. For data analysis and categorization, our reference was Bardin (2011) and Minayo (2014). We used three categories that helped us better understand the context that we propose to deepen, they are: childhood, family and school; education, teaching and school management; and ethnic identity: being black and school principal. Our conclusion is that despite the individual and institutional racism experienced by school principals, they try to overcome difficulties and develop relevant work for the community in which they operate, without victimizing themselves. They fight daily to be recognized as school principals, in the meeting between reality and expectation, they work and seek strategies that help them in the challenges they find in this social place they occupy. Ethnic-racial identity becomes an instrument of struggle, mainly to legitimize fundamental elements of constitution of their professional identity.
Abordagem de conceitos sobre eletrostática no ensino médio através de uma oficina de ensino de Física
(Universidade Federal de São Carlos, 2019-09-06)
Silva, Carlos Augusto
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Souza, James Alves
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https://lattes.cnpq.br/2212240621620011
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https://lattes.cnpq.br/2699603255901379
A Physics workshop is a hands-on activity that can be used in the classroom or in the counter-time to increase student motivation in introductory physics courses at any level. In addition to helping students acquire a good conceptual foundation, it can contribute significantly to applying this knowledge in problem solving and engaging students in scientific practice. In this work we propose the elaboration of a workshop for the teaching of electrostatics. Our purpose was to show that experimentation in an investigative context in the format of a workshop can contribute significantly to facilitate the understanding of several abstract concepts such as electric charge, electric current, electric field and electric potential. This proposal was applied to three schools in the outback of the state of São Paulo for approximately 60 students. During the construction of the experiments the students used the logbook method to write down their observations, make hypotheses and answer questionnaires. With this procedure the student had the opportunity to participate in their own learning, exploring the advantages of scientific activity through investigative experimental proposals. The use of the workshop can be an interesting alternative to minimize the usual reductionism caused by the handout method, which is increasingly present in schools, to improve the relationship between teacher and students and to serve as a complementary methodology to theoretical physics classes. Our proposal was very well received in the classroom, having a motivating and integrative character for the teaching of electrostatic contents. Our educational product consists in the elaboration of a methodology for the application of a kit composed of a Kelvin electrostatic water dropper generator and other common experiments for the detection of electric fields, such as the electric pendulum, the electroscope, and also a handbook written in a simple and appropriate language for the high school physics teacher containing all the details of the construction and application of the kit.
Efeitos de complexos metálicos de cobre no câncer de mama triplo negativo
(Universidade Federal de São Carlos, 2019-09-06)
Teles, Ramon Handerson Gomes
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Graminha, Angélica Ellen
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https://lattes.cnpq.br/5346291554255235
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Cominetti, Márcia Regina
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https://lattes.cnpq.br/3725318894555272
Breast cancer is the second most common type in the world and can be considered a disease with good prognosis if diagnosed early and treated timely. The treatment of breast cancer aims to increase survival and improve the quality of life of women. Chemotherapy drugs cause DNA damage to both tumor and normal cells. Cisplatin is considered one of the best drugs in the treatment of various cancers in the world, but it has several side effects. Research into replacing platinum with another metal center, such as copper and ruthenium, shows advantages mainly in its ability to lessen side effects. In this sense, the objective of the present study was to evaluate the effect of copper complexes in in vitro experimental models on different tumor and non-tumoral breast cell lines. For this, different in vitro experiments were performed using the non-tumor human breast cell lines MCF-10A, the human tumoral cell lines MDA-MB-231, MCF-7, SK-BR3, mouse fibroblast L929 and mouse tumor 4t1.The results demonstrated that the copper [Cu(sdmx-)2(phen)].H2O complex was the most effective in inducing toxicity in triple negative subtype breast tumor cells (MDA-MB-231) compared to non-tumoral breast cell line MCF-10A, which was slightly more resistant to the same complex. Furthermore, it was able to decrease the number and size of colonies, modify the structure of the cytoskeleton, and inhibit cell migration. The importance of copper transporter protein 1, CTR1, was also verified by cell transfection, in which after this process, gene expression was increased approximately ten-fold in transfected MDA-MB-231 cells, and that the complex [CuCl2(-impy)] was more cytotoxic in these cells compared to non-transfected cells. This can be attributed to the presence of vacant points in copper through the loss of chloride ions, which allows their interaction with CTR1 and greater uptake through it. In summary, the results show that the [Cu(sdmx-)2(phen)].H2O and [CuCl2(-impy)] complexes were cytotoxic to tumor cell line MDA-MB-231 and that increased expression of CTR1 caused sensitization in transfected cells upon treatment with the [CuCl2(-impy)] complex. Further studies should be performed with the [Cu(sdmx-)2(phen)].H2O and [CuCl2(-impy)] complexes for understanding of the mechanisms of action and the influence of CTR1 in this process. In addition, considering CTR1 as a target in tumor cells supports the development of strategies that use rational drug design to improve therapeutic efficacy through greater specificity and consecutive reduction of side effects.
Ingestão e palatabilidade ao sódio relacionados aos mecanismos inibitórios do núcleo parabraquial lateral em modelos de desidratação intracelular e extracelular
(Universidade Federal de São Carlos, 2019-09-06)
Cavassim, Diulie Graziela Felipe
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Andrade, Carina Aparecida Fabrício de
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https://lattes.cnpq.br/9055280555067656
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https://lattes.cnpq.br/9770813706903538
Several evidences correlate excessive salt intake with the development or aggravation of chronic diseases, including hypertension and cerebrovascular diseases. One factor that could contribute to excessive salt intake is its ability to improve the palatability of foods. An important inhibitory mechanism for the control of sodium intake has been described for the lateral parabrachial nucleus (LPBN), structure bilaterally located in the pons. Previous studies have shown that LPBN α2-adrenergic receptors activation with bilateral injections of moxonidine produces a potent increase in extracellular dehydration-induced 0.3 M NaCl intake, prolonging the increase in sodium palatability induced by sodium depletion. Although blocking LPBN inhibitory mechanisms produces a paradoxical intake of 0.3 M NaCl in rats with intracellular dehydration, it is still unknown whether activation of α2-adrenergic receptors in LPBN could alter sodium palatability under these conditions. Here we investigated: 1) sodium palatability and appetite induced by 24 hours of water deprivation (intracellular and extracellular dehydration model), and 2) sodium palatability in rats submitted to intragastric overload (intracellular dehydration) after administration of moxonidine or vehicle in LPPN. Present results showed that in rats submitted to 2 M NaCl (2 ml/rat) intragastric overload (intracellular dehydration) unilateral administration of moxonidine (α2-adrenergic/I1 imidazoline receptors agonist) into the LPBN did not change palatability to NaCl compared to vehicle treatment, although the moxonidine-treated group showed increased 0.3 M NaCl intake. When bilaterally injected into the LPBN, moxonidine did not change 24 h water deprivation-induced sodium appetite followed by partial rehydration period when compared to vehicle treatment. However, when animals were not allowed to be partially rehydrated, i.e., they had immediate and simultaneous access to water and 0.3 M NaCl during two hours, there was a potent increase in hypertonic sodium intake after bilateral moxonidine injections into the NPBL. In another group of animals without LPBN cannulas, there was an increase in hedonic responses frequency to intra-oral infusion of 0.3 M NaCl after 24 h water deprivation in relation to basal condition (normohydration), recovering to basal values after the partial rehydration period. The present results suggest that the increase in NaCl intake, evidenced only after water deprivation period, without previous partial rehydration, could be associated with the increase of hedonic responses frequency to intraoral infusion. However, with regard to intracellular dehydration exclusively, moxonidine unilateral LPBN injections promoted an increase in 0.3 M NaCl intake without changes in palatability for this solution.
“Tudo é trabalho”: representações sociais de gestores de logística de transportes sobre o trabalho intensificado
(Universidade Federal de São Carlos, 2019-09-06)
Tavares, Ariane Serpeloni
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Scopinho, Rosemeire Aparecida
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https://lattes.cnpq.br/4770451465556845
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https://lattes.cnpq.br/1468136693911280
In this thesis we present the results and analyzes of a qualitative approach research, which general objective was to understand the social representations of logistics transport managers about their work. In order to understand this particular type of work-worker relationship, we used the concept of intensified work to characterize the relations and working conditions typical of this sector, the Social Representations Theory (SRT), in its sociological and procedural approach to identify how the subjects interpret their experiences and the Psychodynamic of Work to comprehend the subjective relation with work and it’s repercussion on Social Representation’s production, among other concepts. For that, we conducted semi-structured interviews with ten managers or coordinators who worked in the transportation sector of large private companies and who had experienced intensified working conditions in their professional trajectories. The intensified work demands a high physical and/or mental effort of those who work and, in the studied case, comprised the execution of activities at high pace, long journeys, extension of this beyond the formal working environment and constant use of communication devices, which demanded the permanent availability of managers to work. The main results indicated that the managers identified that the working conditions that they experienced were much more intense compared to those of their colleagues and their families and led to difficulties in reconciling private life with the demands of work, the dilution of the barriers between work and non-work and health impacts. On the other hand, managers also indicated that they were satisfied with the pace of work as well as the financial and career benefits stemming from the acceptance of intensified working conditions. We identified the presence of defensive strategies adopted by managers to deal with or alleviate suffering from work overload, as well as other elements that generated well-being at work. The explanations given by the managers for the occurrence of the intensified work involved: a) personal factors (anxiety, need of power, custom, lack of maturity); b) professional factors (need to grow professionally, inexperience); c) factors related to the company and the type of operation (department of work, lack of structure and team, demand for results, meritocratic culture, uninterrupted operations, off-hours drives, restructuring and leadership culture); d) factors such as the naturalization of intensified working conditions in the logistics sector and the need to maintain employment. Considering that the contents present in the transubjective sphere form the background for the construction of social representations, we identified that managers' RSs were anchored in managerial ideology, which naturalizes this way of working: to be profitable, to be available, reach results, dedicate themselves to the maximum. In addition, the subjective relation with the work was pointed out as relevant in the construction of these SRs. In considering that social representations are not only configured by the social context, but also shape it, we conclude that the managers' representations about the intensified work provide elements for the construction of the representations of other social groups, revealing the ambivalent character of the managerial position: victims and intensified labor agents.
Síntese e caracterização de complexos de Cu(II), Ag(I) E Zn(II) com tripeptídeos: avaliação de atividade com xanthomonas citri subsp. citri
(Universidade Federal de São Carlos, 2019-09-06)
Moraes, Carlos André Ferreira
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Silva, Maria Fátima das Graças Fernandes da
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https://lattes.cnpq.br/0457632122660653
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https://lattes.cnpq.br/2574358034018138
SYNTHESIS AND CHARACTERIZATION OF Cu (II), Ag (I) AND Zn (II) COMPLEXES WITH TRIPEPTIDE LIGANDS: ACTIVITY EVALUATION IN XANTHOMONAS CITRI SUBSP. CITRI. In the search for new active substances against phytopathogens, were synthesized and characterized metal complexes with tripeptide L-Phenylalanine-Glycyl-Glycine (PGG), with general formula [Metal (PGG)]counterion, (PGG-1, PGG-2, PGG-3 and PGG-4), and the tripeptide Glycine-Glycyl-L-Histidine (GGH) of general formula [Metal (GGH)] (GGH-1, GGH-2, GGH-3 and GGH-4). These complexes were characterized by Elemental Analysis (C, H and N), Nuclear Magnetic Resonance (NMR) of 1H, 13C {1H}, one-dimensional and two-dimensional, high resolution mass spectrometry, absorption spectroscopy in ultraviolet-visible. The complexes PGG-1, PGG-2, PGG-3 and PGG-4, in water showed transitions n-π*, PGG-3 and PGG-4 exhibited d-d transitions. The GGH-1 and GGH-2 presented n-π* transitions, the complex GGH-3 and GGH-4 exhibited charge transfer bands (MLCT) and d-d transition. The differences found in the absorption spectrum bands in the infrared region (ligand and complex) were a smaller number of bands, inferring the rigidity caused by chelate formation. The copper (II) complexes were characterized by magnetic susceptibility, which are mononuclear. The complexes were tested on bacteria causing citrus canker, which had bacteriostatic activities, evaluated by technique serial microdilution, in which we obtained the Minimum Inhibitory Concentration (MIC), there was inhibited the growth of Xanthomonas citri subsp. citri, in lower concentration in some of the complexes (PGG-1, GGH-1 e PGG-3) compared to the salts used in the synthesis. The tripeptides used did not have bacteriostatic activity, related to the inhibition activity of bacterial growth to the synthesized complexes.
Expressão gênica associada ao conteúdo de minerais no músculo Longissimus thoracis e seus processos regulatórios em bovinos Nelore (Bos indicus)
(Universidade Federal de São Carlos, 2019-09-06)
Afonso, Juliana
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Fortes, Marina Rufino Salinas
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https://lattes.cnpq.br/2970944664405488
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Regitano, Luciana Correia de Almeida
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https://lattes.cnpq.br/9595338480545794
The mineral concentration of the bovine muscle does not only depend on the balance between the ingestion and excretion of minerals, but also the environment, breed and genetic factors. In addition, mineral content can affect biological processes related to meat quality, acting in chemical reactions related to tenderness in postmortem as well as in the maintanance of muscular cells throught its action in methabolism, as enzimatic co-factors and in the regulation of cell replication and differentiation. Since detecting genetic elements involved with mineral homeostasis is of interest to the meat industry, we present analyzes performed for this purpose. Differential gene expression tests were performed in muscle Longissiumus thoracis of groups of Nelore steers contrasting separately to the concentration of the minerals calcium, copper, potassium, magnesium, sodium, phosphorus, sulfur, selenium and zinc. The iron mineral was not included in these analyses because the differentially expressed genes related to iron concentration in the same population in study were already published by our research group. A functional enrichment of the differentially expressed genes was made, also verifying protein-protein interactions known among them, in search of biological processes related to each mineral. Then, also including iron concentration data, two new approaches were developed to use the PCIT (Partial Correlation Coefficient with Information Theory) and RIF algorithms (Regulatory Impact Factor). The new applications for using these algorithms allowed the direct identification of genetic elements correlated to the mineral concentration continuously in our population and the quantification of the regulatory impact of the genes and miRNAs correlated to a mineral on the concentration of this mineral. The regulation of the pathways related to adipogenesis was significant and the genes indicated here may explain the antagonistic effect known between Cu and Zn in the biosynthesis of fatty acids. With the new applications to use the PCIT and RIF algorithms, genes known to be linked to mineral homeostasis with high regulatory impact were identified and previously indicated as regulatory in our population for being transcription factors, eQTLs or miRNAs. The PLCB2 gene is correlated with Fe and S, the latter correlates to the other minerals. The NOX1 gene possessed significant RIF and is correlated to Se. In humans, the concentration of zinc regulates NOX1. We conclude that the core of genetic regulation for all minerals studied seems to be in the interactions between the components of the extracellular matrix. We can infer that the integration of the proposed techniques in our work may include a new level of information about the regulatory elements involved in mineral homeostasis.
Modelo de crescimento de gramíneas adaptado a áreas urbanas
(Universidade Federal de São Carlos, 2019-09-09)
Escobar-Silva, Elton Vicente
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Bourscheidt, Vandoir
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https://lattes.cnpq.br/8224261649535795
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https://lattes.cnpq.br/8866534492617582
Green spaces in urban areas and its impacts on the population has been the subject of many studies, not only because of the important ecosystem services provided by these areas but also due to the direct contribution on public health. Initiatives for control of urban vegetation, regarding the optimization of the cutting/mowing process, reducing costs and potentially reducing impacts on the urban natural ecosystem have not been found in the literature. Thus, this work aims to implement a grass growth model suitable for appropriate management of urban green spaces, specifically in lawns, public parks squares, and roadsides and around waterways. The model was developed in Python and simulates the daily dynamics of leaf area index (LAI), biomass, evapotranspiration and soil water content, going under cutting processes or not, with spatialization capability which might be integrated within geographic information system (GIS) environment. However, only above-ground growth is modeled. Soil water content, temperature, and radiation stress are considered the only environmental growth limitations. The model presents two development stages for the plant, growth cycle and dormancy. The dormant period can be trigged from two different approaches: day length or the soil moisture index - SMI, which allows covering temperate and tropical areas. A case study using Bahiagrass (Paspalum notatum Flügge) as input to run the model is presented as well as the evaluation procedures of the model performance. Two different platforms (an unmanned aerial vehicle – UAV and PlanetScope imagery) were used in the data acquisition and, the vegetation indices NDVI, GNDI, and EVI2 were used to retrieve LAI from in situ measurements and from the sensors. EVI2 showed the best performance for Bahiagrass LAI retrieval and thus it was used in the evaluation of the LAI simulated in the model. To assess the performance of the model, LAI from the model (default and adjusted) and LAI retrieved from both sensors are compared using the associated determination coefficient (R2) and root mean square error (RMSE) as criteria. The results obtained in the analysis suggest that the proposed model is suitable for its purpose and its eventual application may help government administrations with the optimization of cut/mowing processes of urban green spaces (UGS). However, some adjustments in the LAI curve development and in the dormant period are suggested.
Elaboração de um livro paradidático infantojuvenil com enfoque em educação ambiental
(Universidade Federal de São Carlos, 2019-09-09)
Amorim, Bruno Duarte
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https://orcid.org/0000-0003-2776-5559
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Fujihara, Ricardo Toshio
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https://lattes.cnpq.br/1863735094370774
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https://lattes.cnpq.br/2783636793597412
Since the 20th century, zoos have been shaping themselves around four pillars: conservation, research, education, and leisure. Linked to these pillars, environmental education is essential in both zoos and schools, as it has a strong potential for environmental awareness and exposes the relationships among living beings within an ecosystem. However, in recent years, there has been a decline in the number of visitors to non-formal spaces, such as zoos. Supplementary educational materials can significantly contribute to addressing important themes in Environmental Education and the dynamics of zoos, as well as encourage visits to these spaces. Therefore, this study aimed to develop a supplementary educational book focusing on Environmental Education concepts, emphasizing the importance of zoos in species conservation, addressing existing controversies in the relationship between humans and nature, and discussing the importance of species in vulnerable and endangered conditions in Brazil. A bibliographic survey of endemic and endangered animals in Brazil was conducted. Based on this survey, four main species were chosen to be part of the book's plot. In the end, a text related to the theme was produced, resulting in the book titled Dando Voz aos Animais (https://www.amazon.com.br/Dando-animais-Bruno-Duarte-Amorim-ebook/dp/B09X23D2DQ).
Cladocera de água doce do estado de são paulo – brasil: taxonomia, ecologia e diversidade de espécies
(Universidade Federal de São Carlos, 2019-09-09)
Silva, Erika dos Santos
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Rocha, Odete
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https://lattes.cnpq.br/7577441794992601
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https://lattes.cnpq.br/0697473971483910
Studies on Cladocera diversity are of great relevance since this group is one of the three main components of freshwater zooplankton, together with Rotifera and copepods. They provide information for understanding energy and nutrient transport along trophic chains and ultimately the food web structure, besides interactions between species and processes structuring communities. Therefore, works involving taxonomy, molecular biology, species functionality, and aspects of the life of organisms are fundamental to ecological studies. In order to contribute to the knowledge of these aspects regarding the Cladocera of freshwaters of São Paulo state, 284 bodies of water were sampled once, from 2012 to 2015. Some physical and chemical characteristics of the water body (pH, electrical conductivity, dissolved oxygen concentration and temperature) were simultaneously measured, besides analysing biological variables (Cladocera community species composition and diversity). From the results, diversity Shannon-Wienner and Simpson indices were calculated and species were classified regarding their functional role. For one species of the Chydoridae family, Oxyurella cilliata, the study of the life cycle and the molecular DNA barcode was obtained after obtaining a laboratory culture. The environments are heterogeneous and most of the water bodies are small, shallow and impacted by anthropic action. Great species richness of Cladocera (86 taxa) was recorded, with 5 new occurrences recorded (Coronatella paulinae, C. undata, Anthalona cf. acuta, A. cf. brandorffi and A. cf. neotropica). Eight functional groups were formed with information on resource utilization and trophic web complexity. Most species are characteristic of littoral region as the chydorids. This family has the highest specie richness and wide geographic distribution around the world. Many species are being reviewed and on the light of molecular biology are being subject of taxonomic reviews, changing from genus up to subfamily and some new species added. Among chydorids, Bergamina lineolata, Graptoleberis occidentalis, Dadaya macrops and Dunhevedia odontoplax had their distribution area expanded in São Paulo state, although showing habitat specificity and to be restrict to certain types of environments. Results from the life cycle and molecular biology analyses evidenced significant morphological and molecular diferences to between Oxyurella cilliata and O. longicaudis, suggesting the need for an updated taxonomical review of this genus.
Efeito da paisagem na biodiversidade de mamíferos médio e grande porte em um ecótono cerrado – Amazônia
(Universidade Federal de São Carlos, 2019-09-09)
Marchiori, Franciane Aparecida
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Ribeiro, Milton Cezar
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https://lattes.cnpq.br/4158685235743119
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Fernandes, Marcelo Adorna
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https://lattes.cnpq.br/6709493251686592
Habitat loss and fragmentation of Neotropical forests has increased rapidly in recent decades. It caused severe impacts on the diversity and ecological processes that depend on species associated with the forest. Much research has been developed to understand these effects on the fauna that inhabits the Amazon and Cerrado biomes, while the ecotonal zones of these ecosystems remain poorly studied. The immense heterogeneity of the environments south of the Amazon rainforest brings us unknown how the medium and large mammal groups are using the environments available to them as: Fragments, Corridors and Continuous Forests. We used trap cameras to survey fauna and selected 15 landscapes with variation in forest cover (%). We use this work to describe species richness, number of threatened species and number of records of occurrence of medium and large terrestrial mammals in the Tanguro Long Term Ecological Research (LTER) project at the base of the upper Xingu, Mato Grosso, southern Amazon, Brazil. We recorded 5,633 records from April to September 2018 (118.000 hours of collection) for 24 mammalian species. Forest cover (%) positively influenced the number of threatened species, but it was not important to explain species richness or number of records per landscape. When we analyzed the environments, we observed a clear response of forest species to fragmentation disturbances as an effect of edge quantity, habitat percentage and environmental diversity.
O ensino das leis de Newton por meio de resolução de problema envolvendo atividades experimentais em um ambiente com diferentes interações sociais
(Universidade Federal de São Carlos, 2019-09-09)
Scomparin, Paulo Roberto
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Carvalho Neto, João Teles de
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https://lattes.cnpq.br/8622059450756991
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https://lattes.cnpq.br/0833670954987414
The purpose of this research is to stimulate the involvement, engagement and autonomy of students through interactions and exchange of experiences at various levels of socialization: groups, between groups, teacher groups and class groups, with the intention of bringing students in carrying out the proposed activities making physics teaching more attractive it's interesting. The survey was conducted with first year high school students, in a public school in the state of São Paulo. Of a qualitative nature, it involved research in which we report the results of the development of experimental activities involving Newton's three laws: Inertia, Fundamental Principle of Dynamics and Action and Reaction, considered essential and basic concepts for the introduction to the learning of Physical. We proposed a problematic text of dummy origin called "Accident in In this, the students investigate the death of the researcher, Dr. Caio Torres, while made the disposal of lunar rocks. The activity is divided into 3 main steps. After reading the introductory text, each group of students performs experiments that simulate aspects of the accident, organized by a roadmap. In the next step, called intergroups, there is the exchange of information between groups that performed different experiments. In the final stage, the groups return to their original formations and formulate their conclusions. presenting a solution to the proposed problem. Through reports written by the students and field notes, we observed as a result that most demonstrated interest in carrying out the activity, getting involved in the proposed dynamics and showing engagement in interactions. We also observed signs of appropriation of the concepts basic mechanics. We note that the most challenging aspects of the proposal, which partly influenced the achievement of better results, were the manifestations of disaffected among some pairs.