Browsing by Issue Date, starting with "2022-10-05"

Filter results by year or month

Now showing 1 - 20 of 6875

Moléculas fotônicas aplicadas como filtro ótico em laser semicondutor para obtenção de fonte de luz monocromática sintonizável
(Universidade Federal de São Carlos, 2022-10-05)
Pires, Marcus Vinicius do Amaral
;
Barea, Luis Alberto Mijam
;
https://lattes.cnpq.br/7929868663210908
;
https://lattes.cnpq.br/5072506108887205
This work demonstrates the application of Photonic Molecules - PMs in spectral engineering and its ability to integrate a complex and compact optical filter, capable of efficiently and tunably filtering broad emission spectra and with many resonances, generated by a semiconductor laser formed by InGaAs/InGaAsP quantum wells. The proposed device was designed using commercial simulation software and using results obtained from the fabrication and characterization of an electronically pumped laser. the signal generated by this laser was coupled to the designed PM that allowed to filter the modes of the multimode laser, proving its ability to select a single resonance, approaching the output of the photonic system of a tunable single-mode laser.
Avaliação do fator de ajuste dinâmico presente nos métodos de localização MCLA e WCL
(Universidade Federal de São Carlos, 2022-10-05)
Tahara, David
;
Fontes, João Vitor de Carvalho
;
https://lattes.cnpq.br/9473668144091435
The revolution and importance of geolocalization technologies involving satellite signals has increasingly, in recent decades, extended to indoor environments. In this environments, GPS systems have signal attenuation, due to physical barriers and, consenquently, malfunction or no functioning. The internal location needs are broad and range from locating people in hospitals, from the firefighter in a burning environment, to the industry to locate parts or raw materials in the manufacturing environment. So, technologies that solve problems of localization in internal environments arise, being quite common nowadays the localization based on the received signal strength, due to the low implementation cost and simplicity. The localization process involves trilateration algorithms for position estimation. Two of these methods are the Modified Centroid Localization Algorithm (MCLA) and Weighted Centroid Localization (WCL) which in their optimized forms have a dynamic adjustment factor to improve accuracy. This work consists of evaluating the dynamic adjustment through computer simulation on two fronts: the first is an extensive search for the dynamic adjustment factor that minimizes the average error of the evaluated set of points; the second also searches extensively, but for adjustment factors that minimize the point-to-point error. A comparison is made between the results, together with the result of a value of dynamic adjustment found at literature. The simulations were satisfactory and the methodology presented allowed the average error to be smaller in all application cases.
Florestas comestíveis, o potencial da biodiversidade alimentar nativa na Floresta Nacional de Ipanema
(Universidade Federal de São Carlos, 2022-10-05)
Guilherme, André
;
Leite, Eliana Cardoso
;
https://lattes.cnpq.br/2186623269243747
;
https://lattes.cnpq.br/2689063686436858
Currently 50.104 of 381.959 accepted plant species, 13.11% of the world flora, are Brazilian, many of them with real or potencial value for agriculture and food. Also known as food biodiversity, numerous of these negletcted and underutilized species may have important characteristics for the economy, nutrition, food, and could also be strategic in the face of a range of global environmental changes. However, local varieties and species of food plants are threatened around the world, representing serious risk to global food security. On the other hand, a large part of this biodiversity can be found in protected areas, special places which are maneged for in situ conservations purpouse. In that connection this study explore the idea that protected areas like Ipanema National Forests (Flona de Ipanema) can shelter withing their territories a litlle-explore food biodiversity. While a sustainable-use area the Flona de Ipanema is afforting protection to valuable areas of Atlantic Rainforest and Cerrado and support a high biodiversity. Therefore, the objectiv of this study are (1) make a food biodiversity inventory of Brazilian flora in Flona de Ipanema, evidencing its alimentary value and strategic importance for environmental conservation, and (2) investigate the perception of visitors about the ecossistem provisioning services provide by the protected area. The results are presented in two chapters. The first chapter show the presence of an almost unnoticed food biodiversity, represented by 22 species, and seeks demonstrate their current and potential use, and links due to multiple-use, to evironmental, social and economic aspects, benefiting both the Flona de Ipanema and the surrounding population. The second charpter demonstrate that the ecossistem provisioning (food) services is not percieved by visitors, a fact that could be associeted to the main emphasis of public-use programs, that are historically founded in cultural services activities perceived by 89%, followed by supporting services, 10%, with no mention of regulating services. The informations surveyed in this study also make possible to create tools to enable the native food biodiversity conservation, sustainable use and income generation, encrease the capacity to montitoring, management and use of Flona de Ipanema resources. Fourthermore, there is the possibility to use the first charpter results to design new activities and improve the visitor experience.
Avaliação de quatro algoritmos de trilateração baseados em RSSI considerando a variação do número de nós fixos
(Universidade Federal de São Carlos, 2022-10-06)
Ohashi, Felipe Tetsuo
;
Fontes, João Vitor de Carvalho
;
https://lattes.cnpq.br/9473668144091435
Unmanned Aerial Vehicles (UAVs) are machines of great importance these days, as they are no longer a resource that was previously limited to military use but are beginning to exist in the everyday life of society. This change is due to the advancement of technology and the prevalence of his IoT (Internet of Things), where devices are becoming more and more connected. The use of drones for tracking has a variety of applications that exist in fields such as military, agriculture, and government. RSSI is one of the most popular distance estimation techniques, notable for its wide use in traditional wireless technologies and its presence in highly available and easy acquisition devices. The current work proposes a simulation using the RSSI, Received Signal Strength Indicator, method using four different trilateration algorithms to determine the number of anchor nodes from which signals are generated to determine the desired position. Check precision and accuracy in different scenarios. Heatmaps were generated for each trilateration method using MATLAB software to obtain the behavior of the parameters selected for qualitative analysis of the results. Using the data generated by the simulations, mean errors and standard deviations medium values were calculated to allow a general assessment of the algorithm's performance. Comparing the extracted results allowed the identification the strengths and weaknesses of each method applied to RSSI, opening the possibility of using any one of the four algorithms in certain scenarios, although the presented It does not obviate the need to empirically verify the performances presented. From the three chosen parameters, it was possible to estimate IoT applications in which each triangulation method would have a better performance. Assuming, for example, situations in which there would be a need for greater accuracy for an application in drone location or a scenario where the position processing was crucial.
Booktubers e a ostentação virtual de suas bibliotecas: uma análise discursiva do orgulho de ser leitor
(Universidade Federal de São Carlos, 2022-10-06)
Marins, Lara Martelini
;
Ferreira, Luzmara Curcino
;
https://lattes.cnpq.br/4849994635754652
;
https://lattes.cnpq.br/6592164326303004
In this TCC, we are dedicated to the analysis of certain current practices, specifically to internet users, known as booktubers, who record on video, on their YouTube channels, their reading habits and opinions about books. Among the long practices, one of them consists of a tour of sample books through their personal libraries, to which they present their books, explain how they are organized, how programs for these readings, how they acquire these titles, which are their favorites, as well as other books, like yours, decorate their symbols of reading culture and communities. This practice is known among them as bookshelf tour. It interests us as an object of analysis insofar as it indicates discourses about reading in vogue among us and represents the updating, in practices, of discourses. The apprehension of these discourses and the description of their functioning is the common object/objective of the research carried out at LIRE – Laboratory of Reading Studies (CNPq-UFSCar), coordinated by Profa Luzmara Curcino. Under her guidance, and in accordance with the research project she is currently conducting, entitled “Proud readers, ashamed readers: emotions in reading discourses”, our main objective is to reflect on the forms of expression of “pride” that make up the discourses on reading, as manifested in these videos presenting the personal libraries of booktubers. These tours through the shelves with printed books are related to historical practices, such as literary collecting, and update, through the digital media available today, certain practices marked by the “pride” of the reader condition, through self-representation as someone who reads a lot and always, that they have many books, printed and fictional above all, and that they feel sufficiently authorized to talk about the plot of these books, issue evaluative opinions about the works and their authors, express themselves about the practice of reading and recommend it to their followers. In these self-representations, a series of consensual, socioculturally validated, long-standing discourses about this practice are mobilized. Our data collection and analysis sought to describe certain discursive forms of updating this “pride” in relation to reading. To this end, our analysis was theoretically and methodologically supported by principles of Discourse Analysis and Cultural History of Reading, as well as studies carried out by LIRE researchers on the profile of Brazilian readers, especially in their recent research, in which they address the emotions related to discourses about reading.
Monitoramento da integridade em estruturas aeronáuticas utilizando materiais piezelétricos e o método dos elementos finitos
(Universidade Federal de São Carlos, 2022-10-07)
Carpena Neto, Mateus
;
Franco, Vitor Ramos
;
https://lattes.cnpq.br/4590258470207467
;
https://lattes.cnpq.br/7381286713789215
The maintenance of the aeronautical industry corresponds to a big part of spending from aero companies and the safety during the flight of a commercial airplane it’s extremely important. Therefore, Structural Health Monitoring (SHM) techniques are widely searched to be employed in the aeronautical area as a form of predictive maintenance for predicting aircraft structure failures and defects. Meanwhile, several materials and methods are being studied for application in SHM, such as the use of piezoelectric material in the monitoring of its structural condition. Justified by the need for constant monitoring of structural aircrafts, the present work aims the numerical evaluation of the use of the piezoelectric materials in the monitoring of aircraft structures in SHM techniques. For this, a prototype of a commercial aircraft wing was built in balsa wood and an experimental database was acquired from vibration tests with the piezoelectric sensor monitoring. In addition, the wing was modeled using the Finite Element Method (FEM) to evaluate the model with the built prototype and to perform damage tests imposed on the computational model. The results found showed that for the application of SHM techniques it is necessary to evaluate a working frequency range for this technique. In addition, it was observed that for the monitoring of aeronautical structures changes in natural frequencies and in the Frequency Response Function. The results showed that it is possible to obtain a representative model of an aircraft wing prototype with the piezoelectric material by FEM and that it is valid to use this methodology for the study of SHM techniques. Furthermore, it was possible to observe that the computational model proposed was able to detect structural changes caused by damage to the wing, opening the possibility of implementing SHM techniques.
Efeitos de dimensionalidade em perovskitas de haletos para aplicações em células solares: um estudo ab initio
(Universidade Federal de São Carlos, 2022-10-07)
Almeida, João Gabriel Danelon Vieira de
;
Lima, Matheus Paes
;
https://lattes.cnpq.br/1835846543912999
;
https://lattes.cnpq.br/5491051061110118
The structural stability and toxic lead are known obstacles to the current photovoltaic application of perovskite solar cells (PSCs) with high power conversion efficiencies (PCEs). Herein, we perform a systematic study contrasting structural, energetic and optoelectronic properties of 3D and 2D perovskites by substituting metal and halide compositions, and estimating the maximum PCE of these systems. Our investigation was performed with ab initio density functional theory calculations as implemented in the VASP (Vienna ab initio simulation package) code. We investigate 3D MABX3 perovskites with a 2x2x2 supercell and 2D (BA)2(MA)B2X7 (B = Ge, Sn, Pb, X = Cl, Br, I) structures with two octahedral layers. The inclusion of the organic spacer molecules is observed to change the distortions inside the octahedra and weaken the Jahn-Teller effect, as the effective coordination number for the B atom goes from 3.67 NNN to 5.16 NNN (NNN, number of nearest neighbors) considering 3D and 2D GeI-based materials. The BA molecules also provide a greater distortion between octahedra, with angles between B-X-B atoms presenting values in average 5º smaller than the bulk materials, which is a important factor as these distortions are known to affect the electronic band gap. Contrasting the stability of 3D and 2D perovskites, we observed that the presence of organic spacers on the 2D structure increases the cation/anion charge separation, which produces stronger Coulomb interactions resulting in a better stability. Our PCE estimates resulted in 8 perovskite combinations with values over 27% considering both 3D and 2D structures with BX = GeI, SnBr, SnI and PbI. Moreover, the 2D perovskites reached maximum PCEs with a 3.5x narrower layer thickness than 3D perovskites, envisioning a substantial fabrication cost reduction. Furthermore, the PCE estimate for (BA)2(MA)Sn2I7 showed an excellent result of 32.40%, a higher value than its 3D analogous MASnI3 with 27.63% and also higher than the 29.90% value for MAPbI3. The obtained results reinforce the better stability of 2D PSCs and can suggest promising materials with high PCE and without the toxicity of Pb.
Newborn e raça: fraturas nas visualidades e nas representações
(Universidade Federal de São Carlos, 2022-10-10)
Bonifácio, Solange
;
Cruz, Ana Cristina Juvenal da
;
https://lattes.cnpq.br/6736396213946663
;
https://lattes.cnpq.br/6520433300866884
This research aims to investigate the method of photography applied to newborn babies called newborn. Newborn is a photography modality aimed at babies up to fifteen days old and performed by professional photographers. It is about performing, in a qualitative approach, a cartography of imagery production on babies based on the Brazilian historical context. The methodology is cartographic inspiration research produced through the realization and analysis of a bibliographic survey on photography, babies and childhoods, under racial analysis. The corpus is composed of the website of the Brazilian Association of Newborn Photographers and the Newborn section of the magazine "Fhox". The data indicate that, in the production of the modality, there are certain specific procedures and techniques that organize a network of which produce a given visuality forces to babies. In other words, it constitutes a certain image of a baby and, consequently, of black and non-black childhood through techniques directed at the newborn to constitute a performance whose projection focuses on predefined poses, some try to be “the mirror of the uterus”. Thus, also different from other events, such as baby shower, birth, birthdays in which photography is the , record of the ritual, in the case of newborn photography it is established as its own ritual of visuality that prescribes the social and subjectivity(s) roles of each subject by moving out in spaces such as schools, screens of communication equipment, among others.
Nuances da visão evangélica dos direitos humanos
(Universidade Federal de São Carlos, 2022-10-10)
Oliveira Junior, Humberto Ramos de
;
Souza, André Ricardo de
;
https://lattes.cnpq.br/7016915324466152
;
https://lattes.cnpq.br/1098253324138344
This investigative work focuses on the performance of evangelical parliamentarians active in the National Congress in relation to human rights agendas. This group of evangelicals has acted strongly by vetoing and obstructing bills and public policies aimed at the so-called “political minorities”, becoming an important and controversial subject in the national political scenario. In contrast, the initiatives of other evangelicals working in the defense of human rights, mainly driven by the values of ecumenism, are also analyzed. The thesis addressed different perceptions in the evangelical environment regarding human rights and how they translate into certain relevant actions, seeking evangelical dissonances regarding the theme of human rights. The research was developed by reviewing the available bibliography on the subject, analyzing documents produced by those involved - such as videos, books, websites and interviews - and, finally, systematized an observation of events with political incidence of the group in focus.
Classificação de centros Hamiltonianos polinomiais biquadrados, e isocronicidade trivial versus formas canônicas para aplicações polinomiais no plano de Jacobiano unitário
(Universidade Federal de São Carlos, 2022-10-10)
Appis, Raul Felipe
;
Braun, Francisco
;
https://lattes.cnpq.br/5890727692959507
;
https://lattes.cnpq.br/4225097714759688
This work, we classify a non- degenerate center at the origin of a planar Hamiltonian system associated to a function of the form $H(x,y)=A(x)+B(x)y^2 + C(x)y^4$, where $A$, $B$ and $C$ are polynomials. After seing a relation between trivial isochronous centers and the Jacobian Conjecture on the plane, we study polynomial maps $f: \mathbb{R}^2 \longrightarrow \mathbb{R}^{2}$, with $f(0,0)=(0,0)$ and Jacobian determinant constant and equal to $1$, and we present sufficient conditions to its injectivity. At last, as a consequence of the study, we characterize the trivial isochronous centers of planar polynomial Hamiltonian system associated to polynomial function of degrees $10$, $12$, $14$ and $22$.
O gênero Meteorus (Hymenoptera, Braconidae) na região neotropical: um estudo integrativo
(Universidade Federal de São Carlos, 2022-10-10)
Almeida, Luis Felipe Ventura de
;
Dias, Angélica Maria Penteado Martins
;
https://lattes.cnpq.br/8637344058859147
;
https://lattes.cnpq.br/8653393020960839
Species are one of the fundamental components of biodiversity. Their correct identification is essential for several areas of biological research such as ecological modeling, pest control and the development of conservation strategies. Despite more than two centuries of taxonomic research most species are still unknown to science. This fact is especially evident in certain megadiverse and historically understudied groups, such as parasitoid wasps. These insects can directly affect the populations of their hosts and have great ecological and economic relevance. Meteorus (Hymenoptera, Braconidae) is a cosmopolitan genus, with over 350 known species, and develops as a koinobiont endoparasitoid of Coleoptera and Lepidoptera larvae, including several agricultural pests. However, this group is still poorly studied in the Neotropical region. In this work, 1,366 specimens belonging to the genus Meteorus, collected in Brazil and Costa Rica, were examined. Fifty-five species were identified in the material studied, among which 36 are considered new to science and described. Molecular data from the COI marker and host records for several of the species studied are included. A dichotomous key for the species recorded in Brazil is presented. The phylogenetic analysis performed corroborates previous works in recovering the genus Zele as a derived lineage from Meteorus and its reclassification is suggested. A new clade with neotropical distribution is identified, corresponding to species related to M. papiliovorus, which is defined primarily by the presence of a carina in the ventro-posterior region of the mesopleuron. Host utilization data demonstrated the presence of a high degree of specialization in the genus, which contrasts with previous records, and especially with what has been described for species with economic relevance. Currently available data suggests that the neotropical species regarded as generalists could represent complexes of cryptic species. The combined use of morphological, molecular and ecological data proved to be relevant for the definition of the species studied here and will likely be essential for the resolution of taxonomic questions still present in the genus.
Trabalho acadêmico e saúde de estudantes de pós-graduação diante dos cortes de financiamento à pesquisa
(Universidade Federal de São Carlos, 2022-10-11)
Reis, Ana Carolina
;
Silva, Eduardo Pinto e
;
https://lattes.cnpq.br/3492708361349827
;
https://lattes.cnpq.br/0259494208473164
Considering the gradual reduction in the promotion of Science and Technology (S&T) in recent years, and paying attention to the situations in which postgraduate researchers find themselves, the general objective of the research is to investigate the reverberations of the current Science Financing policies and technology in academic work and in the health of postgraduate research students. For this, the research analyzed science and technology funding policies at the federal level in the last 5 years, evidencing the conception of State in which these policies are modeled; It analyzed the possible influences of funding policies and their demands on the postgraduate organization, mapping possible psychosocial risks and, finally, investigating other possible variables that are subject to relative changes and courts in funding policies and that may exert influences . in mental health, assigning meaning to academic work and ways of organizing graduate work. The study demonstrates its relevance in light of the need for reflective theoretical deepening on the dynamic relationships between the capital crisis, the new forms of socialization and subjectivity present in academic everyday life, as well as the attributions of functions in relation to public universities in this context, in order to teach new regulations. The methodology for obtaining two results was used from the triangulation of document analysis, questionnaires and semi-structured interviews. The collection of two data was carried out at the National Institute for Space Research (INPE), in view of the current situation of the institution. The study sample included students from four graduate programs. In theoretical terms of analysis of two results, an investigation based on the assumptions of Psychodynamics of Work was privileged, in an interdisciplinary perspective with the other Clinics of Work, Sociology of Education and Sociology of Work. The results suggest dissatisfaction with funding policies, given that this item greatly interferes with students' daily work. The results also suggest an increase in demands and overload, showing the intensification and extension of working hours for postgraduates, weakening the university-private life reconciliation, so that work becomes their own activity. This research favors discourses on two impacts of non-daily financial factors on students, exacerbated self-demand and lack of support that emerged from the managerial mentality. We identified that the levels of satisfaction after entering graduate school decreased, which allows us to infer that the relationship between work management and disciplines tends to produce weaknesses in the students' experiences. The confluence of the two interviewees' answers demonstrates, in addition to individualizing perceptions and symptoms, a collective demonstration of pathologizing ways of life that we have in tune with the work carried out.
Funga poroide da guarnição da aeronáutica de Pirassununga (São Paulo, Brasil)
(Universidade Federal de São Carlos, 2022-10-11)
Giovanini, Mario
;
Gugliotta, Adriana
;
https://lattes.cnpq.br/7524655663585223
;
https://orcid.org/0000-0002-0241-7825
;
Sebastiani, Renata
Poroid fungi are a group of major ecological importance given their capacity of breaking down wood. Through their activity, they play an important role in nutrient cycling and ecosystem maintenance, especially in forests. In spite of their importance, they, as are fungi in general, are underrepresented in studies, and their diversity and distribution remain fairly unknown. It's Important that further inventory studies on the group are carried out, given their ecological role and the dependency of conservation efforts on diversity studies. This study aimed at surveying poroid fungi diversity in different woodland formations as well as human-occupied areas of PirassunungaAirforce Base, an important area for conservation studies that holds unsurveyed native vegetation fragments. Being the first of its type done in the area, this study produced important data regarding the diversity of poroid fungi in the area, and samples collected are being cataloged and will be deposited in collections. In total, 46 specimens were collected, of which 42 were identified,representing 14 species and 2 morphospecies, representing eight distinct families. An identification key as well as a Field Guide were produced as the results of the project.
As cordas vibrantes: uma sugestão contextualizada no ensino de Matemática e Física
(Universidade Federal de São Carlos, 2022-10-13)
Paulo, Leonardo Martins de
;
Venezuela, Antonio Luís
;
https://lattes.cnpq.br/8722224671269332
;
https://lattes.cnpq.br/9942981602517434
The purpose of this work is to carry out a research of both historical and scientific concepts, related to the waves produced by vibrating strings. During the preparation of the text, a bibliographic and theoretical survey was carried out on the main researchers of the subject, and the motivations for the discoveries in the field of music and science, thus strengthening the debate and deepening of the theme. In the first pages, the observation made by Pythagoras and his school is reported, referring to the stretched string when placed to vibrate, producing sounds in different frequencies. Since then, the participation of mathematics in this movement, or even in the various later times and different chapters of history, involved ideas, thinkers, and theories that developed over the centuries, such as the wave equation. Next, as an emphasis on the evolution of the concepts exposed and argued, a theoretical-practical application will also be made, where the examples presented and discussed through the Fourier equation are directly connected in this scope. We also suggest, in a didactic way, the construction of a lesson plan, composed of questions from recent entrance exams, where the objective is to lead the student to critical thinking, facing the analysis and solving of exercises in diverse and complex contexts, thus strengthening the debate and enrichment of the teaching and learning process.
Métodos de estimação baseados em modelos na presença de dados faltantes
(Universidade Federal de São Carlos, 2022-10-14)
Ribeiro, Taís Roberta
;
Zuanetti, Daiane Aparecida
;
https://lattes.cnpq.br/8352484284929824
;
https://lattes.cnpq.br/8535649395348433
The missing data are observations that should have been made, but were not for some reason, thus reducing the ability to understand the nature of the phenomenon, in addition to making it difficult to extract information from the analyzed data, since the impact on the results of the studies is not always known. As a considerable part of the statistical techniques were developed to analyze complete data, the missing data usually need to be treated in such a way that the resulting dataset can be analyzed by such established methods. The most used methods to deal with missing data are divided, mainly, between methods of data removal and imputation, being both configurations, in most cases, disadvantageous in terms of the analysis of the final result, either by making the results biased or because we have to work with the uncertainty associated with the imputation of unknown values. In this work, then, we propose some model-based methods for solving the problem of missing data for regression analysis, without having to resort to imputation or removal of information. We verified the performance of the proposed methodologies on simulated data under different scenarios and compared it with the performance of other traditional techniques of imputation and data removal.
Otimização da produção de ácido 3-hidroxipropiônico por Escherichia coli via engenharia metabólica e de processos
(Universidade Federal de São Carlos, 2022-10-14)
Batista, Raquel Salgado
;
Silva, Adilson José da
;
https://lattes.cnpq.br/3447469350644179
;
https://lattes.cnpq.br/6792516042003603
The integration of substrates from bioprocesses is of great interest due to the need of destination for them and the possibility of converting them into value-added products. Among these substrates, the hydrolysates from biorefineries and glycerol obtained from the production of biofuels stand out. Listed as an important chemical platform that can be obtained from biomass by the U.S. Department of Energy, 3-hydroxypropionic acid (3-HP) becomes a product option to be obtained from the co-products mentioned above. The production of 3-HP by biological routes presents some advantages over chemical routes and has become increasingly feasible due to the continuous advancement in industrial biotechnology. To make this production feasible, bioprocesses have been developed from recombinant microorganisms. Thus, the application of genetic engineering in the modification of genes related to the metabolic pathway of these microorganisms allows the construction of strains capable of obtaining 3-HP from cheap substrates (e.g., glycerol, glucose, and xylose). A recombinant E. coli strain developed in our research group showed promising results through the β-alanine production route, but the insertion of the 3-HP production pathway in this strain resulted in a deficiency of cofactors, since the last reaction of the pathway is NADPH dependent. Therefore, the regeneration of this cofactor was evaluated by the expression of genes encoding the NADP+ dependent enzyme glyceraldehyde-3-phosphate dehydrogenase, so that the demand for this cofactor by the NADPH dependent pathways could be met. Overexpression of the gapN gene from Streptococcus equi zooepidemicus, which encodes an NADP+ dependent GAPDH, coupled with regulation of endogenous gapA transcription and the use of glycerol as a carbon source, resulted in 147% higher production compared to the control strain. The use of lactose as an induction agent for the lacUV5 promoter was also evaluated in this study and increased the final 3-HP concentration by about 7% compared to the production obtained by the same strain using 1mM IPTG as an induction agent. Furthermore, conditions with O2 restriction in the process showed that, for the pathway studied, 3-HP production is favored under aerobic condition, and oxygen restriction limits production and leads to acetate accumulation by the cell. Taken together, the strategies evaluated led to the second highest production of 3-HP by the β-alanine pathway reported so far in the literature.
Microcontroladores: definição e implementação de controladores estruturalmente flexíveis para sistemas adaptativos
(Universidade Federal de São Carlos, 2022-10-14)
Siqueira, Bento Rafael
;
De Lemos, Rogério
;
Ferrari, Fabiano Cutigi
;
https://lattes.cnpq.br/3154345471250570
;
https://lattes.cnpq.br/3238780932820205
Context: This work starts from the hypothesis that controllers for adaptive systems that are partitioned into elements, in this work called microcontrollers, which are dedicated to each service involved in the stages of a control loop have the advantage of structural flexibility without compromising the reconfiguration and performance of the target system. Objective: This work aims to propose and evaluate an approach to develop controllers that are structurally flexible (i.e. based on microcontrollers), investigating advantages of the approach by comparing with different configurations of controllers. Methodology: In order to achieve the objective, the following activities were performed: (1) definition of flexible controllers by promoting them as a set of independent microcontrollers, demonstrating them as microservices implementations of the control loops; (2) conduction of an exploratory study and associated qualitative analysis regarding the reconfigurations of the controller; (3) execution of comparative studies to evaluate the approach that is being proposed against other approaches found in the literature; and (4) specification of an implementation by using the microcontroller-based approach, to demonstrate the flexibility of the approach. Results: the results and contributions are: an approach to define controllers that are structurally flexible; an exploratory study involving a qualitative analyse about reconfiguration in design time and runtime; a set of comparative studies evaluating different approaches from the literature; a proposal involving the evolution of the multi-layered controller to demonstrate the feasibility of the approach of this work. Conclusion: As conclusion, a multi-layered controller design, based on micro-controllers, provides the basis for defining structurally flexible controllers at operational-time, and may promote reuse at development-time. In addition, even demanding more computational resources, the approach does not impact on the performance and on the reconfiguration of the target system.
Dinâmica de expansão peri-urbana e instrumentos de gestão ambiental sobre áreas protegidas de mananciais no Chile, Brasil e Austrália
(Universidade Federal de São Carlos, 2022-10-14)
Candeias, Flaviana Soares
;
Dupas, Francisco Antônio
;
https://lattes.cnpq.br/5421344818132855
;
Moschini, Luiz Eduardo
;
https://lattes.cnpq.br/2728357583462262
Considering the relevance of protected áreas (PAs) used as springs for large urban centers and the pressures they have been suffering with the advancement of urban areas, this work analyzes three PAs and their respective environmental management instruments in different countries of the global southern hemisphere in the Chile, Brazil and Australia, with different socio-environmental and economic realities. The objective is to expand knowledge about the relationship between the variables of land use and the environmental management instruments in force in the area. Through multitemporal mapping of land use, between 1985 and 2020, with LandSat images, Maximum Likelihood classification and in a GIS environment, the changes that occurred in the surroundings and within the limits of the PAs were analyzed. The results indicate a growing urban expansion towards the PAs along with other changes in land use, such as the reduction of vegetation, which influence the quality and quantity of water in springs. Regarding the instruments, problems were identified that converge to inadequate management, in different intensities. To contribute to the maintenance of water resources and ecosystem services in PAs, it is essential that there is an economic investment, monitoring and effective management in the expansion and planning of areas of vegetation linked to urban planning.
Criação da vinheta projeto podcast.o
(Universidade Federal de São Carlos, 2022-10-17)
Rocha, Guilherme Ansanelo
;
Silva, Carla Regina
;
https://lattes.cnpq.br/6417501858864106
;
https://lattes.cnpq.br/4525503693355379
This Work of Completion of Undergraduate Course in Occupational Therapy was carried out from the experience in a professional internship in the field of occupational therapy and culture, in which there was the opportunity to carry out the process of creating a vignette for the project “Podcast.o ” linked to the teaching, research, extension and culture group Human Activities and Occupational Therapy, from the Occupational Therapy Department of the Federal University of São Carlos. This work aims to present the experience report of the creation and sound and visual identity of “Podcast.o. For this purpose, the Fl Studio® audio editing and creation program was used, which allowed us to proceed with all the technical part of the project. The vignette served to draw the attention of those who start watching the podcast episode, the timbres used were rigorously chosen according to the musical scale that most corresponded to the climate and ambiance, with a jovial characteristic, the rhythm of the mix between hip hop with beats with reference to trap music, at 155 bpm it took place in a cohesive way. We can emphasize that work contributes to reflections and practices at the interfaces of art, culture, education and occupational therapy. In addition to expanding teaching and learning strategies, based on the concept of inclusion and access to information as the podcast is about, providing listeners with a new way of absorbing content on the field, practices and reflections of occupational therapy and culture explained throughout of the episodes.
Efeitos da energia elétrica em uma aldeia A’uwẽ/Xavante: o caso da aldeia Etenhiritipá
(Universidade Federal de São Carlos, 2022-10-17)
Abreu, Mariana Monteiro de
;
Cohn, Clarice
;
https://lattes.cnpq.br/1714080901123094
;
https://lattes.cnpq.br/9844401310549354
This dissertation focuses on some of the effects of electricity in an A’uwẽ/Xavante Etenhiritipá village after the implementation by the Federal Government of the rural electrification program known as Luz Para Todos, in 2012. Doing fieldwork in the Etenhiritipá village from its foundation to the installation of electrical energy, I seek to understand how A’uwẽ/Xavante way of life, as they understand it, was modified or enhanced with its use, highlighting the various practices in which it is adopted, defining new relationships on diverse ways, and how this community, despite the risks, much of them they recognize themselves, others are learning to deal with strategically uses it in order to promote their permanence as A’uwẽ/Xavante in the world.