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Áreas protegidas e turismo, estudo de caso: Parque Nacional do Pantanal Motogrossense/MT e seu entorno
(Universidade Federal de São Carlos, 2005-02-28)
Tocantins, Nely
;
Pires, José Salatiel Rodrigues
;
https://lattes.cnpq.br/3412204514901170
In Brazil, as in other parts of the world, the appeal of visiting protected areas has significantly grown in the last few years, especially in National Parks which require adequated planning and management action to deal with this increased pressure. This study analyses the types of tourism, and the role of the residents in the immediate surrounding area, which are talking place in the National Park of the Mato Grosso (MT) Pantanal and in the Natural Penha(MS), Acurizal (MS) and Doroché (MT) Private Heritage Reserves, which, for convenience, were given the name of the Pantanal Complex of Protected Areas. This name was used when the area received the titles of World Natural Heritage Site and Biosphere Reserve awarded by UNESCO in the year 2000. The National Park is not open to public visits but the Acurizal Reserve began a pilot Project in 2003 directed towards eco-tourism. ln the area near to the Complex live 20 families, approximately 70 people, who 1Pm off the collection live bait leading to their being known as isqueiros which makes them dependant on fishing tourism in the Iocation. The Complex shows conflicting uses such as amateur and professional fishing, the collecting of live bait, hunting, fires coming from neighboring areas, and the use of its surrounding area for the transport of convoys from the Paraná-Paraguay river route. From these analyses it was possible to propose some control and protection measures that could contribute as an aid to the execution of the Mariagement Plans that are being implemented in these Conservation Units.
Cálculos de primeiros princípios para BaO
(Universidade Federal de São Carlos, 2005-02-28)
Amorim, Rodrigo Garcia
;
Rino, José Pedro
;
https://lattes.cnpq.br/6801067322823031
In this work we present first principles calculations with Density Functional Theory, DFT, using norm-conserving pseudopotentials. Initially, we perform calculations of structural properties for metallic barium, Ba, in the Local Density Approximation, LDA, and Generalized Gradient Approximation, GGA, for the exchange and correlation potential. This study aimed at familiarization with the formalism and with the program SIESTA, which was used throughout this dissertation. The GGA turned out to perform out better than LDA, yielding results close to experimental values. After that, we perform structural calculations for Barium Oxide, BaO, in its four allotropic forms, in the LDA and GGA. A study of the energetics of structural phase transitions in this system was carried out in order to identify the sequence of structural transitions. We find that LDA is unable to determine the correct sequence of structural transitions, while GGA reproduces it correctly. Finally, we calculated the phase transition pressures using the enthalpy method. These phase transition pressures, at T = 0 K, are in reasonable agreement with ultrasoft pseudopotential calculations. Our study shows that the use of GGA is fundamental for an adequate description of the energetics of phase transitions in BaO.
Efeitos do método mãe-canguru sobre o desenvolvimento motor de bebês pré-termo extremos.
(Universidade Federal de São Carlos, 2005-02-28)
Canotilho, Marta Martins
;
Nale, Nivaldo
The Kangaroo Mother Care (KMC) has been proposed as a new model of neonatal intervention. This study aimed to contribute for the comprehension of the KMC as a neonatal intervention to promote the motor development of extremely preterm babies. The objectives of this study were (1) to compare the effects of the KMC in motor development between extremely preterm babies and preterm babies of larger gestational ages, (2) to characterize the motor development of extremely preterm babies submitted to the KMC, comparatively of the preterm babies submitted to the traditional routine, (3) to analyze possible relations between the motor development of extremely preterm babies and components of the KMC, as contact skin-to-skin, maternal breast-feeding and the mothers care of their babies until discharge. Participants were 12 at term babies and 66 preterm babies, allocated in 3 groups: the control group 1 (GC1), subdivided in a group of 15 babies with less of 32 weeks of gestational age (GC1<32s) and another of 19 babies with age gestational between 32 and 36 weeks (GC1≥32s), the kangaroo-mother group (GMC) submitted to the KMC during the diurnal period, since the clinical stability up to hospital discharge, subdivided in a group of 15 babies with less of 32 weeks of age gestational (GMC<32s) and another of 17 babies with age gestational between 32 and 36 weeks (GMC≥32s), and the group control 2 (GC2), with 12 babies at term. The motor development was evaluated longitudinally with the Alberta Infant Motor Scale (AIMS), monthly to the 6 months and afterwards to the 9, 12, 14 and 16 months of age (corrected for the preterm baby). The babies of the GC1<32s presented motor development delay, especially in the first semester of life. The babies of the GC1≥32s, GMC<32s, GMC≥32s and GC2 did not present differences in the motor development. The KMC favored the motor development of extremely preterm babies, matching their motor development to the at term babies. The breastfeeding correlated positively with larger punctuations in the scale AIMS in the extremely preterm babies to the 3 and 6 months of age. The mothers care of their babies until discharge correlated positively with larger punctuations in the scale AIMS in the extremely preterm babies to the 6 months of age. The variability of the exposition to the skin-to-skin contact (between 74 and 255 hours) was not associated with the variability of the punctuations in the scale AIMS, in the first year of life. The KMC is a neonatal intervention model to promote the motor development of extremely preterm babies during the first months of life and contributed to humanize the hospital care, to capacitate the mothers in the care of their babies, and to promote the breastfeeding.
Atividade elétrica dos músculos estabilizadores da patela em indivíduos portadores da síndrome da dor femoropatelar durante exercícios realizados no step
(Universidade Federal de São Carlos, 2005-02-28)
Pulzatto, Flávio
;
Pedro, Vanessa Monteiro
;
https://lattes.cnpq.br/4302307099019276
The purpose of this study was to evaluate the electric activity (EMG) in the temporal and amplitude aspects of the vastus medialis obliquus (VMO), vastus lateralis longus (VLL) and vastus lateralis obliquus (VLO) muscles during forward step tasks: stepdown (SFD) and step-up (SFS), and backward step tasks: step-down (SPD) and step-up (SPS). Twenty seven females were evaluated and separated in two groups: fifteen normal subjects Control Group (21.13 ± 2.17 years) and twelve subjects with Patellofemoral Pain Syndrome PPS (21.08 ± 2.31 years). The height of the step was regulated for two angles 45º and 75º - of knee s flexion joint. A metronome was used to help the volunteers about the time to performance the tasks, a eletrogoniometer was used in the control of the knee angle and a pressure sensor was used to determinate the start and the end of the electromyography register. The electric activity was recorded by surface (Ag/AgCl) electrodes, an EMG apparatus with 8 channels (EMG System Brazil) and a software of acquisition data AqDados 7.02. The EMG data was processed by the software Matlab 6.1 that calculated both the onset timing of the muscles and the integrated of the EMG signal. The EMG was normalized by the mean of the three muscle contractions and was calculated de ratio VMO/VLL and VMO/VLO for comparisons between groups and exercises. The relative onset timing was determinate by the difference VMO-VLO and VMO-VLL. The t-tests showed that in the step up exercise (75º of the knee flexion), there are differences when compared the groups, either in frontal step VMO/VLL (p= 0.000) and VMO/VLO (p = 0.000), than posterior step VMO/VLL (p = 0.000) and VMO/VLO (p = 0.000). In the control group there is a prevalence of an early contractions of de VMO muscle, however in the PPS group, the VMO onset occurred at the same time or after the VLO and VLL muscles in the mayor of the cases. The Anova three-way and Duncan post hoc showed that in step at 45º, the ratio VMO/VLO (p = 0,000) and VMO/VLL (p = 0,016) was greater then step at 75º in both groups. When compared the steps in 45º and 75º into the groups, were found differences either in the VMO:VLO ratio (p = 0,000) than VMO:VLL ratio (0,016) with greater values in the step at 45º. The comparison between the exercises performed in the same step height showed that both VMO:VLO and VMO:VLL ratios always was greater in the SFS than SFD (p = 0,01), SPS (p = 0,04) and SPD (p = 0,000). There is no difference between SFD and SPS (p = 0,570) or SPD (p = 0,090). In the Control group the SPS was smaller then SPD, on the other hand, in the SDFP group the SPS was greater than SPD (p = 0,30). Our results suggest that there is a difference in the motor control between groups about muscle recruitment either in frontal than posterior step-up at 75º. In the amplitude aspect, the step at 45º seem to recruit selectively the VMO muscle in comparison with VLL and VLO, thus, this step height should be used preferentially in the SDFP treatment programs. Regarding of the mode of execution, the frontal step (SFS) seems to be the most indicated when the objective is the selective activation of the VMO muscle mainly in the step at 45º.
Análise do desenvolvimento de crianças de um a três anos de idade contaminadas por chumbo
(Universidade Federal de São Carlos, 2005-02-28)
Almeida, Sandra Helena de
;
Aiello, Ana Lúcia Rossito
;
https://lattes.cnpq.br/7544189440874179
;
https://lattes.cnpq.br/6430993267511213
Lead intoxication can damage children development. There are few researches about the effects of lead intoxication on the overall development of young children. The individuals sampled in this study can be considered as double-risk children, since, besides their poor conditions, they are exposed to environmental pollution. Based on that, the present work aimed: a) to analyze the overall development from 1 to 3 yearsold children exposed to lead, with more than ten microgram per deciliter (µg/dl) of blood lead, and in children free from intoxication (0µg/dl of blood lead) and b) to compare the children development and environmental learning conditions between the Group of lead-intoxicated children and the Group of children without contamination. Forty children from 1 to 3 years-old were used in this study, divided into both groups. The Group 1 was composed by 20 children contaminated by lead, and the Group 2 comprised 20 children free from intoxication. The parents or responsible people answered an Initial Interview Report in order to get familiar sociodemographic information and data about children development. The Portage Operational Inventory POI (Williams & Aiello, 2001) and HOME questionnaire (Bradley & Cadwell, 1984) were adopted to verify the overall children development and their environmental and supporting conditions. To assure parental information about the same issues, a protocol of Backing Interview was performed at the end of analyses. POI observations were carried out in a Childhood Center and at children s houses, whereas the HOME inventory was applied to the parents in their houses, exclusively. The data from the first goal of this research demonstrated developmental differences between children from Group 1 and Group 2, based on POI measures. Individuals from both groups presented cognitive and language deficiencies. Nevertheless, according to statistical tests, these differences would be restricted to the areas: Socialization (p<0,05), besides strong statistical tendencies showing that children from Group 2 presented the expected development for their age related to Cognition (p<0,1) and Language (p<0,1) when compared to children from the Group 1, while children from the Group 1 obtained a better performance related to Self Caring (p<0,05) than children from the Group2. Comparing the child development according to environmental quality, we observed that, based on Total Score, Learning Material and HOME variety, both groups were equally deficient. Differences in environmental quality were found in the following sub-scales: Acceptance (p<0,05), where the children from Group 1 presented the highest scores, and Being Responsive (p<0,1) when children from the Group 2 presented a tendency for better punctuation values. There was a significant association (p<0,05) indicating that the low environmental quality, measured by Total Score from HOME inventory, could have influenced the observed deficient children development in both Groups, with regards to Language, Cognition and Overall Development, as measured by POI. Finally, despite of the presented differences, it is not possible to state that lead, solely, caused the deficiency in the development of contaminated children. Indeed, lead intoxication represents a compound that, associated to other risk factors such as poverty and low environmental quality, can maximize the damages over expected child development in each age class. It is necessary to create an observation and interference program with this children, as well as orientation and assistance of the family so that it is possible to contribute to the global development of lead-intoxicated children.
Um estudo de caso com uma criança cega e uma vidente (gêmeas idênticas): habilidades sociais das crianças, crenças e práticas educativas da mãe
(Universidade Federal de São Carlos, 2005-02-28)
Costa, Carolina Severino Lopes da
;
Del Prette, Almir
;
https://lattes.cnpq.br/2191226494887247
The repertoire of social skills of blind and sighted children can be different from each other, inasmuch as the absence of the sense of sight prevents the blind children from using the same resources as those commonly used by the sighted ones, for example the visual imitation in the process of learning social skills and behaviors. The area of Social Skills Training (SST) was the theoretical and practical reference for this study, whose general aim was to describe and characterize the social performances of two identical twins aged ten years old: Célia, who is blind; and Virna, who is sighted. In addition, the beliefs and educational practices of their mother, who is their main caregiver, were identified. The data were obtained by conducting an interview with the mother as well as by filming the children during free situations. A transcript was made of the mother s answers to the questions from the interview script, and then the content was analyzed by theme. According to a protocol for observing the free situations, the films were assessed so that the children s performances enabled to infer the categories of social skills. The results showed that the mother considers that Virna is more independent to perform certain activities, while Célia requires more care and attention, besides being more subject to restrictions. The results also showed that the sighted child presented a wider and more refined repertoire of social skills in relation to her sister. From the data, it is possible to conclude that blind and sighted children have distinct social skills repertories, and the existing differences can be related to the blind variable as well as to the differences in the way the caretaker stimulates the children. Therefore, it is considered important to plan programs aiming to maximize the social development of visually impaired children, including social skills training and advices for the caregivers.
Estudo de um método de priorização de resíduos industriais para subsídio à minimização de resíduos químicos de laboratórios de universidades
(Universidade Federal de São Carlos, 2005-02-28)
Souza, Karina Elias de
;
Salvador, Nemésio Neves Batista
;
https://lattes.cnpq.br/9930582531600560
The majority of the Brazilian universities don t have systematic waste minimization program, especially for chemical laboratory wastes. However, the industries, due to legal responsibilities, economical factors and in order to use waste management as marketing, have been developed waste minimization procedures. This work presents a study of waste prioritization methods to be minimized and applied a industrial method and mathematical model developed by CERCAL (2000), which was adapted to teaching and research chemical laboratories waste of the Chemical Department (DQ) of Universidade Federal de São Carlos. The CERCAL s method covers three type of analysis: economical value, risk and waste minimization capacity. The economical value analysis won t be applied because the University doesn t have cost/benefit control sufficient for the application. The other two analysis were applied using questionnaire answered by technicians, teachers and researchers, where were determined the waste risk and minimization capacity and consequently, its prioritization. Thirteen DQ s laboratories were researched resulting in 107 answers, each one corresponding to one research or teach practice breeder of waste. The wastes were identified and grouped following the place they came from and its chemical likeness, in 27 groups. Among the 27 groups, 12 were classified by the application of the CERCAL s method as essentially priority to be minimized.
Alongamento ativo excêntrico dos músculos flexores do joelho na postura em pé: efeito sobre a amplitude de movimento e torque muscular
(Universidade Federal de São Carlos, 2005-02-28)
Batista, Lucia Helena
;
Salvini, Tânia de Fátima
;
https://lattes.cnpq.br/4391969032505723
The relation between flexibility alterations and muscular torque posstretching is not so exploited in literature. There are many stretching techniques and posture used in clinics and sportive activities. The technique of eccentric active stretching in a standing posture, with weight unloading in the stretched limb, is one of them. Thus, a better knowledge of the alterations caused after its application will provide scientific support for its usage. Objective: To evaluate the effects of an eccentric active stretching program of the knee flexor muscles in the standing posture on the evaluated limb on: knee extension ROM, passive torque of knee flexor muscles and isometric and isokinetic concentric and eccentric torque of flexor and extensor muscles of the knee. Methodology: 34 healthy and sedentary volunteers, both genders (34,42 ± 9,3 years) were evaluated. All of them had 20° or more knee flexor muscles shortening. The stretching program was performed twice a week, for four weeks and consisted of 7 consecutive repetitions of 1 min each one with a 30s rest between them. Knee ROM and knee torque were evaluated using an Isokinetic Dynamometer before and after four weeks of intervention. The passive torque and knee ROM were measured passively, while the isometric, concentric and eccentric torque of the flexor and extensor of the knee were measured through maximal voluntary contractions (speeds 30°/s, 60°/s). Results: There was an increase in the knee extensor ROM from 53,7 ± 13° to 30,1 ± 16° (p = 0,0001). No alteration occurred in the passive torque (from 11,2 ± 3N to 10,6 ± 3N; p = 0,09). The isometric extensor and flexor torque increased from 68 ± 67,8N to 187,58 ± 73,5N (p = 0,006) and from 89,68 ± 32,62N to 93,87 ± 33,12N (p = 0,01), respectively. There was a gain of knee extensor concentric torque at 60°/s from 144,44 ± 51,6N to 151,57 ± 58,2N (p = 0,02) and knee extensor eccentric torque at 30°/s from 175,4 ± 71,6N to 189,9 ± 73,8N (p = 0,01). There was an improvement in the flexor eccentric and concentric torque at 30º /s (from 100,3 ± 34,2N to 105,63 ± 35N; p = 0,02 and from 90,7 ± 31,7N to 96,7 ± 31,8N; p = 0,001, respectively). Conclusions: The eccentric active stretching program of the knee flexor muscles in a standing posture was effective to increase knee extension ROM, improving flexibility in the knee flexor muscles, although there was no change in the passive torque. It also improved the isometric and isokinetic peak torque from the muscle group submitted to the stretching and its antagonist group.
Separação adsortiva de misturas etanol-água por processo PSA
(Universidade Federal de São Carlos, 2005-03-02)
Moreira, Alexandre Marques
;
Gubulin, José Carlos
The ethanol is one of the most well-known and diffused fuels sources in nowadays, therefore the domain of its technology has a great importance to the producer countries. Beyond it is in general, lesser expensive than the major part of the petrochemical fuels, the ethanol has its origin in the renewable sources that becomes Brazil in a world power on its production. From these facts the present work consists on the application of the PSA (Pressuring Swing Adsorption) process on the ethanol purification, from ethanol-water mixtures with compositions that simulate ethanol concentrations of the final steps of distillation process. To get this ethanol purification it was used the zeolite 3A as adsorbent, which adsorbed the water of the mixtures in a pressured bed. The PSA process were composed by four steps: The first was the adsorption bed pressurization, at high temperature, with a given ethanol-water mixture; the second was the residence of the fed mixture for a given time in the bed to recover the ethanol; the third was the depressurisation of the bed to the ambient pressure, and the fourth was the regeneration of the adsorbent by vacuum, to recover the water adsorbed. The process variables studied in this work were adsorption pressure, adsorption time and initial concentration, being evaluated their influences on the response variables fluid phase enrichment, ethanol recover and process productivity, were studied, through a factorial planning. These influences were described by polynomial models, in which were applied the statistical tests F and R2, to analyse the quality of the obtained adjustments. The obtained models were validated by extra experiments done out of the factorial planning. The influences of the process variables over the response variables were analysed through response surfaces generated by the obtained polynomial models. The response variables were individually optimized with the using of search programs, which sought the best results over the polynomial models and the process variable ranges. The individual optimum results of the response variables were found, at the same way, the values of the process variables that produced these results. The response variables were also optimized together simultaneously. To obtain these optimizations search programs, with the same logic of the used in the individual optimization, were used with the multiresponse method, which made possible the obtainment of the optimum values of response variable arrangements in pairs and all of these together simultaneously. These optimum values to these arrangements were obtained, at the same way that the process variable values, which correspond to these optimizations. The enrichment obtained results showed high values and low variations with the increase of the adsorption time. At the same way, the adsorption pressure influences the enrichment significantly only with low values of the initial concentration and adsorption time. The enrichment had also an increase of its value and a decrease of its variation, with the increase of the initial ethanol concentration. The ethanol recover showed without significantly influence with the variations of the adsorption time and the adsorption pressure, however had an increase with the increase of the initial concentration. The productivity profiles showed that they were influenced by the three process variables. The increase of the productivity was detected with the increase of the initial concentration and the increase of the adsorption pressure. The productivity decreased with the increase of the adsorption pressure. The obtained results to the simultaneous optimizations showed that the productivity had a predominant influence over the other response variables optimized with these. At the same way, the recover values were not influenced by the optimization of the others response variables. Also it was seen that the enrichment optimization impaired the productivity results, in spite of the reverse fact had not been verified. To illustrate the generated results of the optimizations, the next values were obtained to the optimization of the three response variables simultaneously: 94.7% to the fluid phase enrichment, 82.5% to the ethanol recover and 5.14g.g-1.h-1 to the process productivity, with the values of the process variables of 10 bar to the adsorption pressure, 90% to the initial ethanol concentration and 2.0 minutes to the adsorption time.
Existência global de soluções para certos sistemas parabólicos não lineares
(Universidade Federal de São Carlos, 2005-03-02)
Webler, Claudete Matilde
;
Kondo, Cezar Issao
;
https://lattes.cnpq.br/0900348462714778
In this work, we study the global existence of smooth solutions for certain systems of the form ut + f(u)x = Duxx, where u and f are vectors and D is a positive, constant and diagonalizable matrix. We assume that the initial condition u0 satisfies jju0¡ujjL1(IR) < r, where u is a fixed vector, f is defined in the ball of the center u of radius r and jju0¡ujjL2(IR) is su±ciently small. We show how our results apply to the equations of gas dynamics and we include a result which shows that for the Navier-Stokes equations of compressible flow, smoothing of initial discontinuities must occur for velocity and energy, but not for the density.
Uma análise bayesiana para dados composicionais
(Universidade Federal de São Carlos, 2005-03-03)
Obage, Simone Cristina
;
Achcar, Jorge Alberto
;
https://lattes.cnpq.br/3125027713681936
;
https://lattes.cnpq.br/4186813257353303
Compositional data are given by vectors of positive numbers with sum equals to one. These kinds of data are common in many applications, as in geology, biology, economy among many others. In this paper, we introduce a Bayesian analysis for compositional data considering additive log-ratio (ALR) and Box-Cox transformations assuming a mul- tivariate normal distribution for correlated errors. These results generalize some existing Bayesian approaches assuming uncorrelated errors. We also consider the use of expo- nential power distributions for uncorrelated errors considering additive log-ratio (ALR) transformation. We illustrate the proposed methodology considering a real data set.
PHOENIX: uma abordagem para reengenharia de software orientada a aspectos
(Universidade Federal de São Carlos, 2005-03-03)
Garcia, Vinícius Cardoso
;
Prado, Antonio Francisco do
;
https://lattes.cnpq.br/2668568143800755
The continuous technological evolution makes many systems become obsolete due to changes in hardware and software platforms, although the fact that they attend their requirements and that they are stable. Software reengineering, integrated with modern techniques of reverse and forward engineering, can be the solution to reconstruct these systems reusing the knowledge embedded in the code and the available documentation. Even when current reengineering techniques are used, some problems regarding the legibility of the code are found in the reconstructed systems. Recently developed systems making use of modern techniques for object oriented analysis, design and implementation using software patterns also have these problems. Thus, motivated by the ideas of a better solution to improve systems codes legibility that have already been built, we intend to investigate an approach to rebuild such systems, obtaining their project and code restructured in a more readable and organized way. The approach combines reverse engineering techniques, component-based modeling, software transformation, and Aspect-Oriented Programming to reconstruct software systems from legacy code and available documentation. The code and the documentation of the reconstructed system are structured according to Aspect-Orientation, which facilitates its maintenance and continuous evolution and complies with new hardware and software technologies. The main mechanisms for the execution of the approach are a Transformational System and a CASE tool, which automates most of the software engineer tasks.
Proposta de estrutura e de método para coordenação da qualidade em cadeias de produção agroalimentares.
(Universidade Federal de São Carlos, 2005-03-03)
Borrás, Miguel Angel Aires
;
Toledo, José Carlos de
;
https://lattes.cnpq.br/9421627326330417
The questions on food quality and food safety are main problems to elaborate healthy agri-food products from ecological process. Those factors, associated with the increasing agri-food sector s competitiveness are basics to conquest new competitive levels by agri-food supply chains (ASC). It follows that is primordial that ACS achieves the assurance of the quality and safety for its products. This can be obtained with the integrated management of quality in the production stages performed along all chain. On this thesis, the type of management which reaches all ACS is called quality coordination. The thesis proposes a structure (Structure for Quality Coordination SQC) and a method (Method for Quality Coordination MQC) which can help the ACS to coordinate the quality into its segments. Thus, the research is based on wide bibliography revision that discusses theoretical concepts on agri-food chain, supply chain, quality management, agri-food coordination and change theories. This revision generated: a) the quality coordination concept; b) the proposal of the SQC and MQC; and c) the SQC/MCQ Implantation Procedure (SMIP). The SQC is composed of the own ACS with its segments and agents, coordinating agent, quality product and quality management requirements and for the MQC. The MQC is composed of eight modules which claims: a) to identify the Demanded Quality (DQ) and deploy it in product and management requirements; b) to follow and evaluate the quality management practices and ACS performance indicators; and c) to propose and control improvement plans. Besides, the SQC and the MQC was evaluated in workshop accomplished with representatives of alcohol and sugar factories and rural producers. A brief illustration of the SMIP and SQC/MQC using in the Brazilian apple ACS is presented too. On this illustration is discussed the financial and technical viability of the SCQ/MQC. Therefore with a wide theoretical background is possible conclude that the SCQ and MQC can contribute to assure the quality and safety of agri-food products, improving the ACS competitiveness.
Sobre o modelo de supercondutividade de Ginzburg- Landau com efeito magnético em domínios delgados
(Universidade Federal de São Carlos, 2005-03-04)
Pereira, Jamil Viana
;
Nascimento, Arnaldo Simal do
;
https://lattes.cnpq.br/6609243657130387
;
https://lattes.cnpq.br/1641850650875934
Desempenho de criança de 7 a 10 anos em diferentes tarefas de controle postural
(Universidade Federal de São Carlos, 2005-03-04)
Kishi, Marcos Seizo
;
Tudella, Eloisa
;
https://lattes.cnpq.br/3207258034860219
;
https://lattes.cnpq.br/2333440373816942
The aim of this study was to describe the effect of different tasks on the postural control of children aged between 7 and10 years old. Twenty-one children, divided into two age groups of 7-8 and 9-10 years old, participated in the study by performing 5 tests from the Balance Master System. The purpose of the first test was to verify the ratio of weight bearing to the levels of articular stress conferred by different degrees of knees flexion, and, according to ANOVA test, there were no differences either between the groups or among the conditions. Both the second and the fifth tests aimed to verify the influence of sensory cues on the postural control quantified by the sway speed; the former provided somatosensory and visual cues, and the latter, vestibular and visual cues. Kruskal-Wallis statistic test was applied to these two tests, and no differences were found between the groups. However, the groups showed distinct behaviors in relation to the conditions. The second test indicated that the alteration in somatosensory input resulted in maximal instability of the postural control, while the fifth one verified maximal instability when vestibular input was altered. The aim of the third test was to identify the response of the control motor components during the performance of tasks that involve intentional movement of the center of body mass toward the target. The group of 7-8-year-old children showed better performances in Endpoint Excursion (EPE) and Movement Velocity (MV), and it seems to be related to cognitive aspects of the task. The forth test aimed to relate the variables of gait to the maintenance of the stability following its achievement, and, although no differences were found between the groups, it was verified positive correlations between anteroposterior body sway and step width as well as progression velocity. Regarding the postural control, it is possible to conclude that the age influenced the variables EPE and MV, since the age group of 7-8 years old showed better performances. In addition, postural as well as motor control of the children was influenced by sensory cues of the tasks.
Extensões de soluções homogêneas de uma classe de operadores diferenciais parciais reais de ordem um
(Universidade Federal de São Carlos, 2005-03-04)
Gabriel, Camila Pires Cremasco
;
Santos Filho, José Ruidival Soares dos
;
https://lattes.cnpq.br/6112529384454347
Elaboração, aplicação e avaliação de um Programa de Ensino de Ginástica Acrobática sob a ótica da inclusão
(Universidade Federal de São Carlos, 2005-03-04)
Borella, Douglas Roberto
;
Denari, Fátima Elisabeth
;
https://lattes.cnpq.br/5575213011914394
The search for a society more joust represents a great challenge. As for the paradigm of the social inclusion, the necessary school to participate changed ding itself into a space where education for given it if comes back toward all the people. The inclusion of pupils with educational necessities special comes being white of many studies and quarrels. One of the concerns is to know until where this can give certain. Being this the present study it had for objective to evaluate the effect of a program of education of Acrobatic Gymnastics in a group of pupils with light and moderate mental characterized necessities educational special as deficient registered in a municipal school that takes care of to pupils with educational necessities special and pupils of common education, both with age between 08 and 10 years. The procedure consisted of the following stages: 1) elaboration of one Program of education of Acrobatic Gymnastics for lessons of Physical Education; 2) application and evaluation of the Program of Acrobatic Gymnastics; 3) evaluation and reevaluation of the affective-social data. The data had been analyzed on the basis of the comparisons of the repertoires of the pupils before and after the application of the education program. For way of this salient it effectiveness of the Acrobatic Gymnastics for the development of this population, pointing referring subsidies with respect to the systematization of knowledge and procedures to the area of Suitable the Physical Education, aiming at to accumulate of stocks the best performance of the important aspects for the development and learning of the pupil. With this program we aim at the inclusion of our pupils in the scopes of the society and the school as well as its participation in events and activities together to the too much common citizens.
Inteligência competitiva a tecnologias do carbeto de silício para o setor de abrasivos
(Universidade Federal de São Carlos, 2005-03-04)
Morais, Túlio Lissandro Melo de
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Gregolin, José Angelo Rodrigues
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https://lattes.cnpq.br/7842651773105125
Because the fact we don t have studies about Silicon Carbide ( SiC ) to abrasives in Brasil, this study sought to accomplish the SiC technological search in abrasives using Competitive Intelligence. The necessity to know the SiC application trends and threat in bonded abrasives in Brasil It was the decision detanier necessity showed by focal company. In addition, it was objective from focal company to know the market and technology about its and your national competition in SiC business. Using the Michael Porter analysis method, it could be observed that the national competitor from focal company has a bargain can biggest in many aspects in SiC chain. The changes involving anti-duping in EUA and Europe will must change the world SiC production scenario in these areas, affecting Brasil. After the intelligence cycle application and the Swot method use, it could be observed that synthetic diamond is one strong threat to SiC. Some abrasives tools already are suffering impact with this substitution of the SiC for the synthetic diamond, like to cutting wheels and grinding wheels and disks to marble, granite, stones and ceramics. To polish, it didn t verified that it will have big changes for the next years, therefore the superabrasives are getting space and it will must be monitored, like proposed in this study with a monitor system. The technological necessity of the sizing process innovation to SiC, to can be more efficiency to produce grains between 80 and 220 in ANSI and FEPA, it was detected because for these grains it won t happen synthetic diamond strong threat in the next years. The SiC micrograins production in the national market is one necessity. Actually it doesn t have enough availability and the actual national micrograins quality isn t so good. The production technology to offer to the market the micrograins in big quantities and with good quality, like humid sedimentation process with Elutriation is proposed and already the focal company has it.
Catalisadores Cu-, Co- ou Fe-ZSM-5 caracterização e avaliação na redução de NO a N2 com hidrocarbonetos na presença ou ausência de vapor de água
(Universidade Federal de São Carlos, 2005-03-04)
Fernandes, Juliana Esteves
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Urquieta-González, Ernesto Antonio
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http://lattes.cnpq.br/2389975677904655
The minimization of the emissions of nitrogen oxides (NOx) in the atmosphere has been one of the great goals in the area of environmental protection. Among the possible processes to treat the NOx, the selective catalytic reduction of NO with hydrocarbons (SCR-HC) has presented important expectations. For this process, the metal/ZSM-5 type catalysts have appropriate levels of conversion in oxidative conditions. In this context, the aim of this work was to prepare Cu, Co and FeZSM-5 catalysts. The samples were characterized by XRD, DRS-UVVIS, FTIR, H2-TPR, SEM and tested in the reduction of NO to N2 with propane or methane in oxidative atmosphere in the presence or absence of water steam. The H2-TPR data showed that the cationic species present in the prepared Cu, Co and FeZSM-5 catalysts, after thermal activation, were mainly Cu2+ (Cuα 2+ e Cuβ 2+), Co2+ and Fe3+ cations located in charge compensation sites in the zeolite, respectively. From FTIR and DRS-UVVIS it was also possible identify oxide species, which were present in a lower content. In the reduction of NO to N2 in the absence of water steam, the CuZSM-5 catalysts showed higher levels of conversion of NO than those based in Co and Fe. However, the FeZSM-5 catalysts showed, in this condition, activity at lower temperatures. This behavior makes them potentially interesting to be applied for practical purposes. On the other hand, in the presence of water steam, it was verified a higher loss of activity of the CuZSM-5 catalyst, which was totally restored removing the water in the feed. For the Co and FeZSM-5 catalysts, the activity loss in the presence of water steam was partially recovered during time on stream.
Processamento e caracterização da liga Al93Fe3Cr2Ti2 solidificada rapidamente
(Universidade Federal de São Carlos, 2005-03-07)
Bonavina, Luiz Fernando
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Kiminami, Claudio Shyinti
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https://lattes.cnpq.br/5443002033733395
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https://lattes.cnpq.br/1415547884100471
The necessity to use materials presenting low density, high tensile strength and easy processing ability have led to the development of news materials and news processing techniques. More recently we can find in the literature, successful reports concerning the developing of bulk nanocrystalline composite alloys presenting a microstructure composed of Al + Quasicrystal + Al23Ti9 phases, obtained by extrusion of atomized powder. The goal of our work was to evaluate the perspective in obtaining bulk quasicrystalline composite, in centimeters scale, by spray deposition process. The Al93Fe3Cr2Ti2 alloy was processed by spray forming using nitrogen as atomizer gas onto a cooper substrate. To understand the influence of the cooling rate on the microstructure, the alloy was cast into an edge shaped cooper mould and the cooling rate has been estimated by using MAGMASOFT software. The samples were then characterized by the use of scanning (SEM) and transmission electron microscopy (TEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), Vickers microhardness measurements and also compressive tests at room temperature. The desired microstructure composed of quasicrystalline particles embedded in Al matrix has been formed only under the higher cooling rate: i) in 90µm thick region of the edge mould sample, where a cooling rate of 105 K/s has been estimated; ii) in the thinner (10mm) region of the spray formed deposit corresponding the peripherical area of the atomization cone. The results indicate that the spray forming is a promising process to produce bulk quasicrystalline composite alloys. However, to fully explore this potential the gas-metal ratio must be higher than that used in the present work, to maintain all the deposit at the same condition as observed at the peripherical region of the atomization cone.