Browsing by Issue Date, starting with "2004-06-29"

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Associação de polimorfismo do gene PIT1 com características de produção de carne em bovinos da raça Canchim
(Universidade Federal de São Carlos, 2004-06-29)
Carrijo, Sônia Mara
;
Regitano, Luciana Correia de Almeida
;
https://lattes.cnpq.br/9595338480545794
The PIT1 gene codes for the pituitary transcription factor Pit-1, which is critical for the activation of the expression of prolactin and growth hormone genes, in addition to participating in the activation of PIT1 itself. The objective of the present study was to investigate the effect of HinfI polymorphism of this gene on meat production traits. The sample consisted of 509 Canchim animals born between 1998 and 2000. The sample included a traditional line (GG1) consisting of 5/8 Charolais genome breed and 3/8 of the Zebu breeds, Nelore, Guzerá and Indubrasil, and a new line (GG2) with 21/32 Charolais genome and 11/32 of the Nelore breed. The genotypes for the PIT1 gene were identified by PCR-RFLP. Genotype effect on phenotypic values for birth weight (BW), standardized weaning weight (W240) and at 12 month of age weight (W365), and on average daily weight gain to the born at weaning (GMND) and to the weaning at 12 month of age (GMD12), were analyzed by the least squares method. The results revealed significant effects of the interaction between genetic animal group and PIT1 genotype on W240, GMND and GMD12 (P < 0.05). The differences in mean least squares between genotype ( / ) and genotypes (+/+) and (+/ ) for W240 and GMND were significant in GG2 (P < 0,01 and p < 0,05, respectively), revealing superiority of the ( / ) genotype on that characters. The means for genotypes (+/+) and (+/ ), respectively at the W240 and GMND, did not differ from one another, suggesting a dominance effect of the HinfI (+) allele. The means effects of the HinfI ( ) allele indicated a positive effect of this allele on W240 and GMND, and the deviation estimates attributed to dominance showed a favorable effect of the HinfI ( ) allele on W240 and GMND of GG2 animals, when present in homozygosis in the genotypes of the individuals. The means of the genotypes in GG1 did not differ from one another. The difference in PIT1 behavior observed in the two genetic groups, however, may suggest the action of a quantitative trait locus linked to PIT1 segregating only in GG2 of the population studied, and not a direct effect of PIT1.
Determinantes da tomada de decisão sobre as atividades produtivas rurais: proposta de um modelo para a produção familiar.
(Universidade Federal de São Carlos, 2004-06-29)
Vilckas, Mariângela
;
Nantes, José Flávio Diniz
;
https://lattes.cnpq.br/1900976112613026
The family small farms represent a very important segment in the national economy since it plays an important role in food production, incoming generation and distribution and land occupation. However, this segment is characterized by an inadequate management, which commits its competitiveness. The main aim of this reasearch is to propose a practical and accessible production planning model for vegetables raising family farms, which can help them to consider internal and external factors when deciding what to produce. The methodology had four main stages: (i) interviews with families that raise vegetables from São Carlos, São Paulo, in order to identify the production systems and the planning of the production activities; (ii) working out a planning model; (iii) interviews with rural management and vegetable production specialists, to confirm factors used in the model, the weights given to each factor and the notes for the possibilities of the producer reality; (iv) correction and final mode s working out. When interviewing the producers, it was observed that they don t have many years of formal education, most of the families are led by 30 39 years old men, there is a wide participation of women in the labor and few producers have employees. Within 33 interviewed producers, 11 have decided to get specialized, producing from 1 to 5 vegetables options, specially the green ones. The producers do not have a structured methodology to make decisions, and they do not consider all the factors that may influence the decision of what they should produce. Concerning to the planning model, the considered factors in the decision were grouped in internal (natural, human, financial and technological resources) and external (demand, offer and support services), but the use of weights were adopted only with the internal factors. The interviewed specialists emphasized the importance of making the correct decision about choosing the product variety to be raised and also about getting organized through associations and cooperatives. This study is an initial reasearch , which may be used as a subsidy for other rural planning studies. Although the decision model proposed has been developed to be used by producers, it may be also useful for rural projects, cooperatives, associations and financial agents, since it proposes a methodology to analyze the products options.
Análise de herança da resistência à ferrugem da cana-de-açúcar P. melanocephala H. & P. Syd
(Universidade Federal de São Carlos, 2004-06-30)
Moura, Guilherme Lacava de
;
Giglioti, Éder Antonio
;
https://lattes.cnpq.br/4151969603820945
Sugarcane rust (Puccinia melanocephala) is a major disease distributed throught the world, causing yield losses of 50% in conducive environments. Resistance is an essential trait to control rust in commercial cultivars requiring routine tests along the selection time in breeding programs. In order to better understand the complexity and to determine the inheritance of rust resistance in brazilian sugarcane cultivars, this work analyzed eight F1 segregating populations involving 10 genotypes as parents. The resistance was polygenic where the segregation of several minor genes in each progeny was responsible for their classification in the different resistance levels from 2 to 9. Besides polygenetic resistance, the presence of major genes segregating 1:1 and 3:1 deviated the individuals to the grade 1, corresponding to complete resistance. It was observed transgressive segregation, generating resistance genotypes from susceptible-susceptible crosses. Therefore, to achieve resistant cultivars it not necessary to chose resistant parent if effective tests are used to screen susceptible genotypes during selection. It was also observed maternal effects in segregation, deviating individuals to rust resistance.
Análise genético-quantitativa da eficiência produtiva de um rebanho bovino da raça Canchim
(Universidade Federal de São Carlos, 2004-06-30)
Mello, Silvio de Paula
;
Alencar, Maurício Melo de
;
https://lattes.cnpq.br/9737816927066698
Genetic parameters for body weight at weaning (PD), at twelve months of age (P12), at first calving (PPP) and at adult age (PAD), condition score at calving (ECP) and at first calving (EPP), growth curve parameters A (asymptotic weight) and k (maturation rate), age at first calving (IPP), culling age (TPR, days in herd), number (ND10) and kilograms (QD10) of calves weaned up to ten years of age, total number (NDT) and total kilograms (QDT) of calves weaned during herd life, kilograms of calves weaned per year in herd (QTPR), and the ratios weaning weight of calf/weight of cow at calving (RPP) and weaning weight of calf/weight of cow at first calving (RPPP) of females of a Canchim (5/8 Charolais + 3/8 Zebu) beef cattle herd were estimated by Bayesian inference. The average values of heritability were 0.38 (PD), 0.40 (P12), 0.51 (PPP), 0.54 (PAD), 0.18 (ECP), 0.36 (EPP), 0.60 (A), 0.54 (k), 0.12 (IPP), 0.22 (TPR), 0.22 (ND10), 0.24 (QD10), 0.23 (NDT), 0.23 (QDT), 0.32 (QTPR), 0.16 (RPP) and 0.40 (RPPP), indicating that these traits have enough genetic variability to show response to mass selection, with the exception of IPP. The genetic correlations of TPR, ND10, QD10, NDT, QDT and QTPR with the body weights (PD, P12 and PD) suggest that selection of females based on weaning and 12-month body weights should not reduce the produtivity traits studied; however, increasing females adult body weight would reduce the number of calves weaned by the cow up to ten years of age. The genetic correlations of TPR, ND10, QD10, NDT, QDT, QTPR, PAD, A and k with IPP, PPP and EPP suggest that selection to reduce age at first calving, in general, should improve longevity and productivity traits of females, but the increase in body weight at first calving would reduce some of the productivity traits. The genetic correlations of IPP, EPP, PD and P12 with RPPP suggest that selection to reduce age at first calving should improve the productivity trait of the females.
Caracterização e diagnose molecular de Xanthomonas sp. Agente causal da falsa estria vermelha da cana-de-açúcar no Brasil
(Universidade Federal de São Carlos, 2004-06-30)
Souza, Lídia de
;
Giglioti, Éder Antonio
;
https://lattes.cnpq.br/4151969603820945
O papel dos polissacarídeos algais extracelulares na dinâmica de metais no reservatório de Barra Bonita
(Universidade Federal de São Carlos, 2004-06-30)
Gouvêa, Sandra Protter
;
Vieira, Armando Augusto Henriques
;
https://lattes.cnpq.br/4428377384377272
The influence of phytoplankton and their excreted materials in natural waters have been considered important issues among metal speciation studies. This work focused on the potential influence of the high molecular weight materials excreted by dominant phytoplankton species of Barra Bonita reservoir (Anabaena spiroides, Microcystis aeruginosa and Aulacoseira granulata) in the speciation and complexation of Cu and Cd. Therefore, this study comprised field and laboratory studies. Seasonal samplings were made during a period of two years in the reservoir. The total, ionic and organic concentrations of Cu and Cd were determined, as well as the complexation parameters with ligands present in the reservoir water. Also, the dissolved organic carbon and physico-chemical parameters of the water column were obtained. A speciation model was applied to metal complexation parameters and total metal concentrations obtained in field investigations. Laboratory cultures of the selected microalgae were made to obtain high molecular weight excreted materials. In a similar manner, the high molecular weight materials were isolated from the reservoir water. These materials were analysed for metal complexation with Cu and Cd, monosaccharide composition and elemental analysis (C, H, N and S). In the reservoir water, Cd speciation was dominated by ionic species, while Cu was mostly associated to the dissolved organic matter. Seasonal samplings presented Cu ligands with similar complexation parameters for the entire period studied. Cd complexation was not detected in the reservoir water. The speciation model resulted in similar Cu2+ concentration to the mean value obtained in field analyses, and indicated higher Cu association to the ligands of the reservoir water. Cu was complexed by all high molecular weight materials studied, while Cd was complexed solely by the cyanophyte materials. Higher proportions of acid monosaccharides in the high molecular weight materials corresponded to higher Cu and Cd complexation parameters, whereas no relation between C, H, N and S proportions and metal complexation properties of the high molecular weight materials was observed. The excreted materials of dominant microalgae from Barra Bonita reservoir had Cu ligands with intermediate to weak binding strength, as those present in the reservoir water. These results indicate the potential influence of such organic materials in metal speciation, bioavailability and mobility of metals with similar behaviour to that of Cu in the reservoir water.
A atuação do professor de matemática na educação de jovens e adultos: conhecendo a problemática.
(Universidade Federal de São Carlos, 2004-07-01)
Migliorança, Fernanda
;
Tancredi, Regina Maria Simões Puccinelli
;
https://lattes.cnpq.br/9218253421106800
The Education of Young and Adults comes gaining space in the research carried through in the educational area. A great concern exists in understanding the process of education for which passes these people, who had remained many years without schooling or moved away from the educational system. An inquiry on the practical of the professors who act on the Education of Young and Adults is important to understand this process better, once that these professionals are responsible for the learning of this population and their insertion in the educative field. The particularity of this work is in investigating how the professor of Mathematics acts on the Education of Young and Adults, searching to know better their Mathematics perceptions and its teaching and also about learning of Mathematics for this population. For this, besides observing the teaching performance of these professionals it was looked to better know them through interviews and analysis of a study of case elaborated from participants of the inquiry classrooms events. The research had three professors of Mathematics participants, who act on the Education of Young and Adults in a state public school of a country city of São Paulo, and the students of one of its classrooms. Given the participants characteristics, the research constituted in three studies of case, each one referring to a professor and its classroom. To base this study I abandoned legal supports that sustain this modality of education, about profile of this clientele, about the situation of Mathematics education for these pupils and about basic and permanent formation of the professors who act on this area. Some results of the research are showed to follow. Young and adult people initiates their studies or returns to school after many years of removal with clear intentions: they search to invest in the study, since they had not access on it in the appropriate age, trying to improve their conditions of life. Moreover, they bring back specific and previous knowledge on the return to school, that assists or not themselves in learning process. All these aspects must be recognized and valued by the professors, searching to take care of young and adults' objectives that had made them return to school. When it has reported to the searched professors, it has evidenced that the lack of specific formation to teach Mathematics to young and adult people and the diffculties found in the work environment, in the school and its context, has important influences in pedagogical practical. However, when the professors have themselves availability to analyze their practical one, they invest in the diffculties overcoming and looking for new ways, even not finding institution support. For these professors, the idea of that teaching is a solitary passage becomes stronger. Although restricted, this educational scene of Mathematics teaching for young and adult people gives some suggestions to improve formation and performance of the professionals who act on this area.
Dinâmica de coerência e decoerência de estados em redes de osciladores quânticos dissipativos
(Universidade Federal de São Carlos, 2004-07-02)
Ponte, Mickel Abreu de
;
Moussa, Miled Hassan Youssef
;
https://lattes.cnpq.br/7828776012924524
In this thesis we studied the coherence and decoherence dynamics of states in a network of dissipative quantum oscillators. The coherence dynamics refers to the swap and recurrence process of states between the oscillators composing the network. These processes become crucial to understand the decoherence dynamics of states in a network of dissipative quantum oscillators. Beyond the weak coupling regime between the oscillators, where the dissipative dynamics is ruled by the usual Liouville operators L`½1;:::;N , associated to each of the ` = 1; :::;N oscillators of the network, we also considered the strong coupling regime. In this regime, the dissipative dynamics is also ruled by cross-decay channels Lm;n½1;:::;N (m 6= n = 1; :::;N) which leads to important consequences to the coherence and decoherence dynamics of quantum states of the network. Considering a network with only two coupled dissipative oscillators, we reproduce in this system the phenomenology of the Eletromagneticaly Induced Transparency or the Dynamical Stark Effect which are typical of the radiation-matter interaction when one of the oscillators is submitted to linear or parametric amplification process, respectively.
Manejo do cálcio intracelular e influência da temperatura sobre a contratilidade cardíaca de Synbranchus marmoratus
(Universidade Federal de São Carlos, 2004-07-08)
Rocha, Matheus Lavorenti
;
Kalinin, Ana Lúcia
;
https://lattes.cnpq.br/5493936744279888
The present study anlyzed the in vivo and in vitro responses of the myocardium obtained from Synbranchus marmoratus acclimated at 25 ºC and tested at 15, 25 and 35 ºC. The in vivo heart rate (fH bpm) was measured during acute transitions in temperature and subsequent return to 25 ºC. ECG recordings (lead DI of the electrocardiography) were obtained of electrodes at cardiac region. Recordings of the isometric contraction force (Fc mN.mm-2) and time-dependent parameters (TPT time to peak tension; THR time to half relaxation) were obtainded in vitro from ventricle strips electrically paced in response to stimulation frequency, temperature, extracelular Ca2+, adrenaline and ryanodine (blocker of the sarcoplasmic reticulum SR). The species showed a significant increase in the fH during the transition from 25 to 35 ºC, and a significant decrease from 25 to 15 ºC, showing the importance of the chronotropic adjustments in response to thermal alterations and a great tolerance and adaptation to different thermal conditions. The species did show significant changes in the twitch force (Fc) development by the ventricular strips during the increases and decreases of temperature. The addition of crescent Ca2+ concentrations to the medium evidenced the importance of the extracellular Ca2+ for the heart contraction mainly at 35 ºC. Significant changes in the time-dependent parameters after increments in the Ca2+ extracellular concentration were not recorded. The post rest tension was conducted with and without 10 µM ryanodine in the medium. A significant post rest potentiation was recorded for the control preparations at 25 oC (100 to 119.8 ± 4.1 %) and 15 ºC (100 to 118.4 ± 2,8 %). However, this post rest potentiation was inhibited by ryanodine only at 25 oC (100 to 97.6 ± 1.5%), and, at 35 oC, force remained unchanged in the control preparations, but a significant post rest decay was recorded in the presence of ryanodine (100 to 76.6 ± 4.6%). The impact of increases in the imposed contraction frequency caused a decline of the force only at high frequencies in all the experimental temperatures. The maximal stimulation frequency sustained by the species is superior at high temperatures. The addition of a tonic level of adrenaline (10-8 M) did not cause any significant alteration in force or time-dependent parameters, when compared to control values. However, in presence of the 10 µM ryanodine, the Fc decreased significantly, without alteration in the TPT and THR. Additionally, the adrenaline concentration was incresed to 10-5 M. The adrenergic stimulation with high level of adrenaline caused positive inotropy with a magnitude that ameliorated the negative inotropic effect of ryanodine, with the exception of high pacing frequencies. In conclusion, S. marmoratus seems to possess large stores of intracellular activator Ca2+, resembling mammals rather than terrestrial ectothermic vertebrates. As a difference, this species also depends on extracellular sources of Ca2+ at high temperatures which provide more flexibility to modulate the contraction force.
Racismo na "família ferroviária": brancos e negros na Companhia Paulista em São Carlos.
(Universidade Federal de São Carlos, 2004-07-12)
Ferreira, Lania Stefanoni
;
Monsma, Karl Martin
This research consists in a study of the relationship between white and black employees of the Companhia Paulista de Estrada de Ferro between 1930 and 1961. The aim of this research is to understand the racial relations between these two groups, how they formed their identity in everyday work and the forms of racial discriminations. To realise this research, twenty retired laborers of Companhia Paulista who live in São Carlos were interviewed.
Utilização do método LiDS para identificação de diretrizes visando a análise de impactos ambientais no ciclo de vida de produtos veterinários.
(Universidade Federal de São Carlos, 2004-07-12)
Lucente, Adriano dos Reis
;
Nantes, José Flávio Diniz
;
https://lattes.cnpq.br/1900976112613026
Ocupação de fundos de vale em áreas urbanas. Estudo de caso: Córrego do Mineirinho, São Carlos, SP
(Universidade Federal de São Carlos, 2004-07-17)
Amorim, Lia Martucci de
;
Cordeiro, João Sergio
;
https://lattes.cnpq.br/2572864522562875
;
https://lattes.cnpq.br/0409424166730354
In the last 50 years, the Brazilian urban growth process is compromising in many ways the environmental quality of the cities. Thus, among several impacts existents, it s possible to notice an inadequate occupation of river marginal areas. This is causing modifications in the physical and biological environmental elements, wasting potential recreation areas and bringing several problems to the urban population, like inundation and flood. The purposes of this research were to investigate and discuss environmentally correct alternatives to river marginal areas occupation. There were developed environmental criteria to provide solid basis for planning the land use of these areas. Based on these criteria, an example of local characteristics evaluation method was proposed. This method was applied to the chosen object of study - Mineirinho stream marginal area - in the city of São Carlos-SP-Brazil. The main results obtained were the studied area environmental situation diagnosis and some suggestions of occupation or restoration.
Processamento e transformações de fase em ligas para armazenagem de hidrogênio processadas por moagem reativa
(Universidade Federal de São Carlos, 2004-07-20)
Santos, Sydney Ferreira
;
Ishikawa, Tomaz Toshimi
;
https://lattes.cnpq.br/5726055117451807
In the present work, the phase transformations in metallic materials processed by reactive milling were investigated. The as-milled samples were characterized by X-ray diffraction, transmission and scanning electron microscopy, X-ray dispersive energy spectrometry, differential scanning calorimetry and hydrogen content determination. The effect of the processing parameters on the structure, morphology, hydrogenation and contamination content were analyzed. The processed materials were a Ti33-Cr36-V31 alloy and the elemental powder mixtures Mg-50Ni and Nb-28Mg (compositions in at. %). For the Ti-Cr-V alloy, reactive milling induces the disproportionation of the original BCC solid solution phase resulting in a material composed by a mixture of vanadium hydride, hexagonal Laves phase and V-poor BCC solid solution. For the Mg-50Ni, it was observed the a higher energy mill aids the chemical and morphological homogeneity of the powders. It was also observed that initial hydrogen pressure and milling times affect both hydrogenation and phase formations. For higher times (96h) and pressures (2,0MPa of H2) of milling, it were observed evidences of a Mg-Ni-H phase disproportionation. Finally, the reactive milling of the Nb-28Mg mixture shows the catalytic effect of the Mg on the hydrogenation of this nanocomposite. After 48h milling, the Nb of the nanocomposite were almost all transformed in NbH2 and absorbed 95% of its theoretical hydrogen storage capacity. For pure Nb, processed by the same way, the phase formed was NbH and the metal absorbed only 33% of its theoretical hydrogen storage.
Estudo por espalhamento Raman dos efeitos de desordem química e estrutural no espectro de fônos do InSb indentado
(Universidade Federal de São Carlos, 2004-07-20)
Joya, Miryam Rincón
;
Pizani, Paulo Sérgio
;
https://lattes.cnpq.br/1038437165007849
Proposta de um middleware para monitoramento de situações de emergência em ambientes físicos ou lógicos cientes de contexto
(Universidade Federal de São Carlos, 2004-07-21)
Micheloti, Gislaine Cristina
;
Araujo, Regina Borges de
;
https://lattes.cnpq.br/8964123297688432
Ubiquitous computing in which information and services are offered to users in a continuous and non-intrusive way, is widely explored for classroom, meeting rooms, tourist guides, intelligent home and also safety-critical applications: industrial, aviation, metro-train safety, patient monitoring, etc. The advances in heterogeneous visualization and information access devices, sensors and wireless networks has propelled the emergence of applications that need fine grain monitoring to prevention, combat and evaluation of emergency situations. In the first case (prevention), information is captured from sensor network in order to prevent critical conditions. In the second case (combat), it can aid with more detailed information to help decision making in the management of rescue teams (for instance, in the localization of people and objects in environments with heavy smoke and/or flames), and, in the third case (evaluation), to help auditory for insurance companies, training teams, and even people responsible for the safety of the environment being monitored. In this work, a system for Monitoring Emergency Conditions in context aware environments is considered as being a physical or logical environment with sensors across it that capture context information, which are interpreted, recorded and visualized in 3D virtual environments that mimic the real environment. This work presents a proposal for a Middleware, which is platform and programming language independent that meets functional requirements of context aware systems, such as context interpretation, localization, adaptation, etc., as well as non-functional requirements, such as: reliability, efficiency, modularity, portability, interoperability and extensibility. The middleware is specified as a set of services that interact with the application, with a sensor network and with services themselves. The interaction is achieved through a publish/subscribe mechanism based on topics in that subscriptions and notifications are issued and described in XML, and transmitted through the SOAP protocol, making the system accessible from the web. The services can be integrated and executing in a single computer, or they can be distributed across the network and even ran in nodes of a sensor network.
Desenvolvimento de métodos para determinação de metilbrometo de homatropina em produtos farmacêuticos empregando turbidimetria em fluxo e titulação condutimétrica
(Universidade Federal de São Carlos, 2004-07-23)
Canaes, Larissa de Souza
;
Fatibello Filho, Orlando
;
https://lattes.cnpq.br/9859737944357808
Antimuscarinic compounds are drugs, which play important role on the central nervous system. The most widely used are atropine, escopolamine, homatropine and homatropine methylbromide. These drugs are utilized in several clinical situations, and, because of this, it is necessary to develop simple, fast and effective analytical procedures for the dosage of these pharmaceuticals. In this work, three procedures for the determination of homatropine methylbromide in the pharmaceuticals were described: two with turbidimetric detection, and one with condutometric detection. In the first procedure, the homatropine methylbromide (C16H21NO3.CH3Br)reacted with silicotungstic acid (H4Si(W3O10)4) forming a precipitated ([C16H21NO3.CH3]4[Si(W3O10)4](s)), which was measured at 410 nm. A volume of 125µL of the 1.0x10-3 mol L-1 silicotungstic acid solution and a sample volume of 375µL were introduced into a carrier at flow rates of 2.0 mL min-1 and 3.9 mL min-1 respectively and a tubular coiled reactor of 50 cm was used. A solution of 0.05 mol L-1 HCl was used to carry the sample and reagent solutions. The analytical curve was linear in the homatropine methylbromide concentration range from 8.1 x 10-5 to 2.2 x 10-4 mol L-1 (r=0,996), with a detection limit of 5.0 x 10-6 mol L-1 (3σB /slope). Relative standard deviations (RSD) of smaller than 1.5% were obtained for the homatropine methylbromide solutions in the concentrations of 1.08 x 10-4 and 1.62 x 10-4 mol L-1 (n=10). Recoveries ranging from 96.0 to 103.0% were obtained. This method was applied in the determination of this drug in the pharmaceuticals, with a sample throughput of 70 h-1.In the other flow injection procedure, the homatropine methylbromide (C16H21NO3.CH3Br) reacted with AgNO3 forming a precipitated AgBr(s), which was measured at 410 nm. A volume of 25µL of the 1.0x10-2 mol L-1 AgNO3 solution and a sample volume of 375µL were introduced into a carrier at flow rates of 2.0 mL min-1 and 3.9 mL min-1 respectively and a tubular coiled reactor of 50 cm was used. The analytical curve was linear in the homatropine methylbromide concentration range from 8.0 x 10-4 a 1.7 x 10-3 mol L-1 (r= 0,998), with a detection limit of 9.5 x mol L-1 10-5 (3σB /slope). Relative standard deviations (RSD) smaller than 2.0% were obtained for 1.2 x 10-3 and 1.5 x 10-3 mol L-1 homatropine methylbromide solutions (n=10). Recoveries ranging from 94.9 a 104,0% were obtained. This method was applied in the determination of this drug in the pharmaceuticals, with a sample throughput of 75 h-1. In the final condutometric procedure, 10 mL of either the sample solution or the homatropine methylbromide solution (C16H21NO3.CH3Br) was titrated with 1.0x10-3 mol L-1 AgNO3 at 200 rpm and 25°C. The LD was 1.0x10-4 mol L-1.
A reação de Diels-Alder entre p-Benzoquinonas 1,3-Pentadienos-1-Substituídos
(Universidade Federal de São Carlos, 2004-07-23)
Finelli, Fernanda Gadini
;
Brocksom, Ursula
;
https://lattes.cnpq.br/6662565980382547
In this dissertation, studies are described on the cycloaddition of 1-silyloxypentadiene- 1,3 and 1-acylamino-pentadiene-1,3 with alkylated para-benzoquinones. The first methodology involves cycloaddition reactions of dienes 51, 115 and 116, under catalysis and thermolysis conditions, with para-benzoquinones 37, 42 and 43.The second methodology involves the preparation of the diene in situ from the α,β-unsaturated aldehyde (80) and the amide (81) in the presence of the p-benzoquinones 37, 42 and 43.Theoretical calculations have been carried out on the frontier orbital energies, and the coefficients of the dienes and dienophiles employed in this work, and then compared with the experimental results. Cycloadduct 52 has been studied chemically with the objective of attaining the functionality of common eudesmane sesquiterpenes.
Efeito da fragmentação Florestal sobre borboletas (Lepidoptera, Hesperiidae) associada à formiga-de-correição Eciton burchelli (Hymenoptera, Formicidae, Ecitoninae)
(Universidade Federal de São Carlos, 2004-07-27)
Vieira, Rosamary Silva
;
Dias Filho, Manoel Martins
;
https://lattes.cnpq.br/1346547036069954
Efeitos da dramatização sobre compreensão oral de histórias infantis por alunos com deficiência auditiva.
(Universidade Federal de São Carlos, 2004-07-27)
Carvalho, Vânia Lúcia Corradi
;
Mendes, Enicéia Gonçalves
The scholar integration proposal demands that the school organize itself to facilitate the access for students with hearing impairment to the curriculum, allowing them, under those circumstances, to have educational opportunities to reach enough knowledge to perform their citizenship. The educational needs of these students demand effort of educators providing them a flexibility of the instruction resources, making feasible the opportunities of learning that take into account their singularity, especially related to communication. This paper had as the main objective an assessment to evaluate the effectiveness of the use of fairy tale dramatization, as an educational strategy to provide an improvement of the oral comprehension of stories for five students with hearing impairment, aged between 7 and 13, enrolled on a public school. It was used an experimental multiple baseline design between individuals, which started with an assessment of previous knowledge that each participant had; hearing impairment, previous knowledge about the fairy tale, followed by the participation of each one in a training with a pedagogical activity and in the end a dramatization related to the fairy tale. These activities were performed by each student in different moments, in a same group composed of four no-hearing-impairment participants. The data were collected by video and/or tape recordings. One statistical descriptive analysis was applied, by comparing the previous knowledge that each student with hearing impairment had about the fairy tale, before and after the achievement of both pedagogical activities and dramatization. The results showed that the participants who had been exposed to the two posterior interventions showed more improvement in performing the assessment tests of the fairy tale oral comprehension, as much in the evaluations accomplished after the introduction of the pedagogical support activity as after the dramatization activity. Although the two interventions had promoted improvement in this performance, there were differences in the magnitude of the change when it was compared with each individual among themselves, or in the student himself, the effect of the two strategies (pedagogical support and dramatization). The inter and intra-individual rate differences suggest that individuals benefited themselves in different ways when the two teaching strategies were used, and it seems to point toward that there is no superiority of one strategy over another, what implies the importance in diversifying the teaching instruction to fulfill the individual particularities in learning condition of students with hearing impairment.
Síntese e caracterização de pós de Li2TiSiO5 e Na2TiSiO5
(Universidade Federal de São Carlos, 2004-07-30)
Albarici, Viviane Cristina
;
Leite, Edson Roberto
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https://lattes.cnpq.br/1025598529469393
This work presents a systematic study of the synthesis and characterization of Li2TiSiO5 and Na2TiSiO5 compounds. We studied their structural, morphologic and luminescent properties using X ray diffraction, Raman spectroscopy and scanning electron microscopy. These materials have in their crystalline structures centers of pentacoordinated titanium. The samples were produced through two different synthetic routes, both based on Pechini method. Different heat treatments were applied in order to obtain crystalline and disordered materials. The polymeric resins obtained were submitted to Raman spectroscopy, to verify their influence on the different routes used in the powders preparation. These materials were analyzed by X ray diffraction and Raman spectroscopy, to study the thermal evolution of the phases, as well as the structural disorder of the samples. Rietveld refinement were performed on the diffraction patterns of the crystalline samples. The morphology of the samples was investigated by scanning electron microscopy. After structural characterization, luminescent properties of the synthesized powders were studied. These studies were realized using excitation wavelengths of 250 and 488nm. The obtained results showed that Li2TiSiO5 did not present luminescent properties when the excitement wavelength was 250nm but they did when disordered and excited by the 488nm line. On the other hand Na2TiSiO5 samples presented luminescence with excitement of 250nm although didn t present this property when excited with 488nm. For a better understanding of the luminescent properties in the Li2TiSiO5 and Na2TiSiO5 compounds, their electronic structures were investigated by quantum-mechanical studies. This investigation allowed us obtain information about the effects of deformations in the crystalline structure and in the physical properties of these compounds. The obtained results suggest that the luminescent properties can occur by different mechanisms and thus depend on the crystalline structure and the excitement wavelength.