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Produção de exopolissacarídeos em diferentes fases do crescimento de Staurastrum tohopekaligiensis Wolle (Chlorophyceae)
(Universidade Federal de São Carlos, 1996-03-12)
Dulcini, Silvana Elizabeth de Méo
;
Vieira, Armando Augusto Henriques
;
https://lattes.cnpq.br/4428377384377272
Laboratory experiments were carried out with the aim of studying the production of dissolved and capsular exopolysaccharides in diíFerent growth ages by Staurastrum tohopekaligiensis Wolle. This microalga was isolated from a marginal lagoon of the Mogi- Guaçu River, SP-Brazil. The cells were grown axenically in artificial culture médium under controlled conditions of light intensity, temperature, aeration and light/dark cycle. After 25 and 48 days of growth, the cells were harvested by centrifligation, washed with distilled water by centrifiigation, resuspended in distilled water, and submitted to 40 0C under mixing with a magnetic stirrer to extract the capsules. The capsular material and the dissolved one were both filtered, concentrated, dialyzed and ffeeze-dried. The production of exopolysaccharides was greater in the stationary growth phase than in the exponential one. Gel filtration chromatography analysis revealed that both the capsular and the extracellular polysaccharides obtained at different growth ages can be ífactioned in two fractions, "A" and "B". Fraction "A" presented a molecular weight close to or larger than 2 x 106 daltons, while fraction "B" of 2 x IO6 daltons, approximately. lon exchange chromatography data showed great similarities between capsular polysaccharide and extracellular polysaccharide, both having acid nature. When different growth ages are considered, a significant variation was observed in relation to the percentual participation of fractions "A" and "B" of the capsular polysaccharide. It was observed that fraction "B" from "old" cultures represents 92% of the total. Biochemical analysis revealed that the extracellular material does not have a sulphate group but has a proteic fraction. Gas chromatography analysis of extracellular and capsular polysaccharides revealed the presence of neutral sugars and acid sugars. The neutral sugars are; flicose, galactose, glucose, mannose, rhamnose, arabinose and 3-O-methyl galactose and the acid ones are: galacturonic acid and glycuronic acid.
Planejamento ambiental na cidade de São Carlos (SP) com ênfase nas áreas públicas e áreas verdes diagnóstico e propostas
(Universidade Federal de São Carlos, 1996-09-19)
Oliveira, Carlos Henke de
;
Santos, José Eduardo dos
;
https://lattes.cnpq.br/8533387365058570
This study has aimed to environmental planning on São Carlos City through the purpose of a classification system for public areas and public green areas, based on its structural, functional, utilitarian and legal attributes of public areas, to allow the social and environmental diagnosis based on population density, percentage of green areas and green area/population ratio to whole urban nucleus. The GIS (Geographical Information System) IDRISI provided a necessary support to development and application of operational models. The diagnosis of arborization allows determine 8 strategies that will operate over public and particular areas, aiming enhance the quality of environment and life. The proposition of implantation of new green areas was evaluated through prognosis. The results have shown 2.07 percentage of green areas. The green area/population ratio was 2.59 m2/person. The proposal of new areas for arborization would result at 6.98 m2/person, representing a real ameliorate from the present situation, however the prognosticated value was considerate low when comparing to other Brazilian cities. It was conclude that the Classification Model for Public Areas is adequate for the defined purposes and there is a need to review the specific legislation, therefore, planning and organizing the Local Government which would act effectively to accomplish the environmental policy.
Estudo da origem do cromossomo 21 extra em portadores de Síndrome de Down
(Universidade Federal de São Carlos, 1996-09-27)
Silva, Wellington dos Santos
;
Barbosa, Calógeras Antonio de Albergaria
;
https://lattes.cnpq.br/0434592982925844
Down syndrome is usually due to meiotic nondisjunction leading to trisomy 21.The origin of nondisjunction in trisomy 21 has so far been studied using cytogenetic heteromorphisms and DNA polymorphisms. Short sequence repeats have recently been described as an abundant class of DNA polymorphisms in the human genome, which can be typed using the Polymerase Chain Reaction (PCR) amplification. Analysis of these polymorphisms may provide a more accurate understanding of the meiotic stage of nondisjunction in trisomy 21 than that previously provided by chromosomal heteromorphisms. The following DNA polymorphisms located in pericentromeric region of human chromosome 21. Were typed D21S13E, D21S16 and D21S120. The other polymorphism studied was HMG14-GT2 which map to the terminal band 21q22.3. In the present stud such markers were used in order to the determine the parental origin and the meiotic stage of the additional chromosome 21 in 32 cases of Down syndromy. Seven families were informative showing that nondisjunction ocurred in meiosis I and three were from maternal origin using HMG14-GT2 polymorphism. In the other molecular systems the families are not informatives.
Estudo do reprocessamento de terpolímeros ABS
(Universidade Federal de São Carlos, 1997)
Pagliarussi, Marcelo Sanches
;
Agnelli, José Augusto Marcondes
;
https://lattes.cnpq.br/7592090152400440
;
https://lattes.cnpq.br/6172932804874946
This study studied the effects of reprocessing on the terpolymer acrylonitrile-butadiene-styrene (ABS). ABS presents an intrinsic instability to oxidative, thermal or photochemically initiated degradation. Therefore, we sought to adopt a methodology for thermal restabilization of ABS, through the use of different commercial thermal stabilizers (always in the form of a blend of phenolic antioxidants and phosphites in a ratio of 1:2, respectively), and to study the effects of restabilization on the overall performance of the material. The study was divided into two stages: pre-selection of formulations and accelerated thermal aging. In the pre-selection, processing tests were performed to evaluate the processing stability of the four formulations used in relation to the reprocessed regrind without restabilization. Multiple-pass tests were performed with monitoring of the flow index and processing simulation tests on the Haake torque rheometer. The four samples with restabilization (formulations 1-4) and the non-restabilized regrind showed essentially the same stability characteristics, with no significant differences between the samples. In any case, formulation 2 was chosen to proceed, together with the regrind, to the accelerated aging test, due to its flow stability according to the evaluations of fluidity index and torque stability in the Haake Torque Rheometer. Test specimens for tensile and impact tests were injected from formulation 2 and the regrind, and these were subjected to the accelerated thermal aging test, in an oven with air circulation, at 100°C, for 1000 hours. After this period, the unaged (to) and aged (ti) specimens were characterized by monitoring their mechanical properties, and the samples from the granulated reprocessed material (pellets) to the aged c.p. (ti) were characterized by differential scanning calorimetry (DSC) and infrared spectroscopy with attenuated total reflectance (FTIR-ATR). It was observed that the ABS terpolymer presents good reprocessing conditions, despite its low thermooxidative stability. The material presented a small variation in the fluidity index, demonstrating that the thermooxidative degradation did not cause significant changes in molecular weight. On the other hand, degradation manifested itself quickly in the polybutadiene (PB) phase, indicating that, in the long term, it can cause a significant decrease in impact resistance. The behaviors were very similar, both in the restabilized sample (formulation 2) and in the ground sample without restabilization.
Caracterização e análise ambiental do Campus da Universidade Federal de São Carlos (UFSCar), São Carlos, SP
(Universidade Federal de São Carlos, 1997-10-03)
Paese, Adriana
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Santos, José Eduardo dos
;
https://lattes.cnpq.br/8533387365058570
It was made an environmental characterization as a preliminar basis for the environmental planning and land ocupation strategies, at the Federal University of São Carlos’s campus (São Carlos, SP), through its structural variables conversion (hidrology, altimetry, land use patterns, vegetation cover) to digital format, using GIS-IDRISI. The resulting thematic maps, besides gathering important information which can subside the development of other studies, allowed the landscape units (biotopes) identification. The biotopes spatial patterns suggest different proposals for the urbanized and not urbanized areas
Crescimento de monocristais supercondutores de YBa2Cu3O7-ȣ pelo método de fluxo em cadinhos de SnO2
(Universidade Federal de São Carlos, 1998-02-27)
Ramírez, Roberto Antonio Rojas
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Leite, Edson Roberto
;
https://lattes.cnpq.br/1025598529469393
Nowadays, the flux method is one of the most widely used techniques promote growth of YBa2Cu3O7-ȣ single crystal superconductor. By using the material in a melted state, the reactions due to temperature are possible. To prepare single crystal superconductors of the family Y-Ba-Cu-O, a long period of time is necessary to melt the material in adequate conditions. In order to do this a satisfactory performance of the crucible is required; it must be resistant to any kind of chemical attack. In this work some materials used were investigated in crucibles. Platinum, gold (noble metals), oxides like Al2O3, ZrO2 showed problems when used in processing Y123 superconductors. To avoid this problem the zirconiaytria system is largely applied. Some authors have investigated the SnO2 crucible, but they found problems related to the densification of the SnO2. Recently, it was discovered that SnO2 can be densified without liquid phase, showing 99,7% of the theoretical density when sinterized up to 1300°C. Then, this condition was used to produce crucibles by slip casting to form the YBa2Cu3O7-ȣ single crystal superconductors without contamination. It was observed, in a first instance, that SnO2 crucibles are resistant to chemical attack of the flux that is rich in barium and copper. During the process it was observed an interface wall between the vial and the flux formed by BaSnO3. This protection is formed after heat treatment at 1025°C during 4, 17 and 24 hours. By increasing the treatment time (up to 24 hours), it was observed that the wall thickness increased too and it was possible stablish a relation between treatment time/thickness wall (that defines the resistance of chemical attack). This enabled the determination of the SnO2 crucible resistance to corrosion, under the flux condition. The second part of this work involved the Y123 single crystal growth. After produced, they were analysed by x-ray diffraction and SEM with microanalysis in cross sections of the crucibles to observe the BaSnO3 interface. It was observed that single crystals were not contaminated by tin, and they were analyzed through measuring magnetization vs. Temperature. The single crystal showed a critical temperature (Tc) around 90,5K with a transition width (Tc) around 19,5K before treatment with an oxygen flux at 450°C. After seven days of a second treatment under the same conditions, the Tc was increased to 92K with a decreasing to 4,5K in Tc. The results showed that SnO2 vials are resistant to BaO-CuO flux and appropriate to single crystal growth in YBa2Cu3O7-ȣ superconductors without external.
Redes para cooperação internacional: uma janela de oportunidade para os países recém industrializados?
(Universidade Federal de São Carlos, 1998-07)
Furnival, Ariadne Chloe Mary
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https://lattes.cnpq.br/1291482506649810
Aborda o papel das redes eletrônicas de informação e das redes inter-firmas, como fator determinante para maior integração e cooperação entre os países recém industrializados, à luz de pesquisas já desenvolvidas por autores que consideram as redes como mecanismos que meramente reforçam as desigualdades globais existentes.
Estado polarônico de elétrons em canais quase unidimensionais na superfície de hélio líquido
(Universidade Federal de São Carlos, 1998-08-18)
Ramos, Antonio Carlos Alonge
;
Studart Filho, Nelson
;
https://lattes.cnpq.br/0451310772113076
;
https://lattes.cnpq.br/4935414024522342
In this work, we have investigated the polaronic state formed in the system of surface electrons confined in a quasi-one-dimensional channel over liquid helium. The electrons bound to the surface by a holding electric field can be laterally confined by electrostatic or structural means and the lateral confinement can be modeled by a parabolic potencial. The polaron is a quasi-particle composed by the eleçtron coupled to the surface deformation (dimple) wich arises from the pressing field. The polaron properties are obtained from the solution of the coupled nonlinear system formed by the Schrõdinger equation and the equation for mechanical equilibrium of the surface deformation. We have employed two kinds of approximations to solve the system. The first one, named the harmonic approximation, consists in expanding the surface deformation in second order for dimensions smaller than a localization radius, and the other one is the variational method, in which a harmonic-oscillator like trial function is proposed. We have determined the surface deformation, the electron energy in the dimple, and the polaron energy as a function of the holding electric field. We have also studied the influence of a magnetic flield applied in the direction perpendicular to the surface. We established the field threshold for the existence ofbound states in the system. Our results for the ground-state energy are the same in both approximations. However, for the excited states, we show that the harmonic approximation is reliable only in certain conditions.
De deficiente a trabalhador: reabilitação profissional na perspectiva da pessoa com deficiência - um estudo de caso.
(Universidade Federal de São Carlos, 1998-12-21)
Carretta, Regina Yoneko Dakuzaku
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Truzzi, Oswaldo Mário Serra
;
https://lattes.cnpq.br/5005536921435787
Vocational Rehabilitation Programs for people with disability have been considered important, contributing for their insertion in the labour market. On the other hand they are targets of criticism due to this kind of practice, being some times authoritarian, paternalist and segregational. An analysis of such programs reveals importance because of this ambivalence that follows the dynamics developed within the Institution. We considered the client s view of great priority in this analysis. So, this research proposes a comprehension of the practice developed in an Institution that performs a Vocational Rehabilitation Program, starting from interviews done with their former clients. Their opinions, critics and suggestions supported us, comparing the obtained data with document analysis and other interviews with the staff. Thirty-two clients have been interviewed, being twenty-two hearing-imparied, five with physical dysfunction and five mentally handicapped. For most of the cases of audictive dysfunction a sign interpreter was needed. The items discussed referred to their professional experiences; participation in the Vocational Rehabilitation Programs; entrance, staying and mobility in the labour market. For the majority of the interviewed clients, the Institution favored the acess and staying in the labour market. On the other hand, they questioned the length of the Program prefering something shorter, although understanding the need of a preparation to the entrance in the labour market, there are references to the little diversification of activities , or tiring activities used as training. They also mentioned the importance of counseling in relation to their personal and social aspects. The staff discussed the need of a variety of training activities and modalities for engaging in the labour market. They showed the need to review the performance assessment model used; they are concerned with the profile of workmanship required by the labour market and with the changes increasing in the world of work, in an era of globalization. Therefore it was concluded that the program has showed itself satisfactory in its proposals of favoring the entrance and staying of the people with disabilities in the labour market, although there are issues raised by ex clients and by the professionals of the institution that need to be reviewed, in order to offer better services.
Estimulação precoce domiciliar: um programa de intervenção e sua análise em bebês de risco de O a 6 meses
(Universidade Federal de São Carlos, 1999)
Braz, Patrícia Ferraz
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Emmel, Maria Luisa Guillaumon
;
https://lattes.cnpq.br/0695868190594622
;
https://lattes.cnpq.br/2204528746711663
;
https://orcid.org/0000-0001-7952-279X
One of the highest risks to the newborn, according to several authors is Asphyxia, a progressive process potentially reversible in the initial stages, in a spontaneous way, if the cause is removed. However, once in progress, this spontaneous reverse process becomes difficult, for the most part, due to circulatory, metabolic and neurologic alterations that goes with it can lead to severa[ leveis of compromising in its development. There are matemity hospital conducts in the neonatal period that may detect any risk of alteration in its development. Under the risk of disabilities, it is necessary to refer the newbom to initiate an intervention as soon as possible, avoiding future disabilities and recuperation of those already installed. Based on its presumed above, it led the objectives of this research that intended to analyze the neuropsychomotor development of infants that participated in an early home intervention, relating with features of perinatal asphyxia detected in matemity hospital and, comparing with the literature data. The study had as participating, an experimental group (GE), and a control group (GC), composed on risky babies, with features of perinatal asphyxia, detected in the maternity hospital. The infants in the GE participated intervention program from 3'd week until 3'd month of life. The GE mothers, was also participants, since they were present in the stimulation process. All the infants (the GE and the GC) were submitted to assessments in neuropsychomotor development until the 24th week. The chosen place to the intervention was the own infant's home. The procedure consisted of 3 (three) stages: 1) an interoiew with the mothers of GE, with the objective to know the newbom routine; 2) an assessment of its neuropsychomotor development, realized in 2"-d, 3rd, 8th and 12th week, 1 (5th, 2()lh and 24th week of infants life and, 3) the GE global stimulation twice a weekfrom 3'd week until the 12th week. The results were achieved through analysis interventions before the aspects: (a) the researcher conducts, the infant's responses and the guidance supplied to the mother; (b) from development comparison of the infants in the GE along with its development; (e) from development comparison of the infants in the GE and the GC with the described in the literature and (d) from development comparison on the GE with the GC, on 6months. With these data was concluded that an early intervention participate of the evolution in the development in the infants at risk, therefore it is not the only reason that acts in this development and that the home intervention improves the interaction between the therapist with the infants. And was concluded that its family, mainly the mother, that is the most important in this stimulation process.
MHEG-5/SMIL: um ambiente de integração entre os padrões
(Universidade Federal de São Carlos, 1999-01-02)
Macedo, Marcos Roberto
;
Vieira, Marina Teresa Pires
;
https://lattes.cnpq.br/5446518523049572
;
https://lattes.cnpq.br/0337179938970868
This work presents an integration environment between the standards MHEG-5 and SMIL. The MHEG-5 standard defines the syntax and the semantics of a group of objects which can be used for interoperability of multimedia applications among platforms with minimal resources. On the other hand, the SMIL standard provides synchronized media in the Web documents. In order to integrate the two standards two translators were developed. With this integration the multimedia applications can be presented either in a Web environment, using SMIL, or in authoring tools following the MHEG-5 standard. A rule database was developed to carry out the translations; which has as an objective to store the translating rules between the standards allowing for dynamism in the translation process. As a test database for the translations a Multimedia Object Server multimedia database was used in the AMOM project, where a connection module was developed between these database an the Web environment. This work has also involved the proposal of an environment which integrates the SOMm and the Web, whose title is MAW (Multimedia Application WebBuilder).
Gestão ambiental municipal: competência normativa do município aplicada a proposta de COMDEMA para o município de Luiz Antônio - SP
(Universidade Federal de São Carlos, 1999-02-05)
Grando, Francelino Lamy de Miranda
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Santos, José Eduardo dos
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https://lattes.cnpq.br/8533387365058570
Due to the Brazilian Constitution from 1.988, the Municipalities were born as beings integrating the Brazilian Federation, with the States and the Union itself, setting a new standard for Constitucional Law studies. It depends on investigating the whole new borders for the Municipalities competency on editing and applicating the environmental law to get Knowing of the role the mayor, the local legislators and the citizens may play on acting for the purposes established on Art. 225 of the refered Magna Carta. Upon studies developped at the Country of Luiz Antonio, in the hinterland of Sao Paulo State, by senior and junior researchersfrom Sao Carlos Federal University altogether with elected locals, a proposal was reached consubstanciated in a draft of a proposed to be COMDEMA's Bill, standing COMDEMA for Local Council for Environmental Protection.
A comunidade bacterioplanctônica e o estado trófico de dois ecossistemas aquáticos de Minas Gerais
(Universidade Federal de São Carlos, 1999-04-08)
Nascimento, Fabio Alberto
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Barbosa, Francisco Antonio Rodrigues
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https://lattes.cnpq.br/0932673194762377
;
https://lattes.cnpq.br/2403483154296692
This work analyzed the density, biomass and bacterian biovolume through epifluorescency's microscopy with acridina's orange, they were related with the trophic state of two aquatic ecosystem in Minas Gerais. The samples were colected in september 1995 (dry season) and february 1996 (rainy season) in the littoral and limnetic zone of Pampulha reservoir, a eutrofized urban ecosystem, located at north region of Belo Horizonte city, strongly influenciated by the exhaust of the domestic and industrial sewers derived from of its tributaries and by the dumping of garbage by the population around, and in the Olhos d'Água lagoon, a natural urban ecosystem, oligotrophic, and little antropofically influenciated. Significantly differences were founded between physics, chemistry and biological varieties in that two environments. At Pampulha reservoir, the bacterian density oscillated from 0.31 x 106 bacteria/ml and 1.73 x 106 bacteria/ml in the drying season and between 0.31 x 106 and 1.15 x 106 bacteria/ml in the raining season. The biomass oscillated between 50.9 μgC/l and 279.9 μgC/l in the drying season and between 66.6 μgC/l and 205.2 μgC/l in the drying season. The biovolume oscillated between 0.376 μm3/l and 0.644 μm3/l in the drying season and between 0.377 μm3/l and 0.667 μm3/l in the raining season. In the Olhos d'Água lagoon the density oscillated between 0.15x106 bacteria/ml and 0.19x106 bacteria/ml in the drying season. The biomass oscillated between 9.9 μgC/l and 44.70 μgC/l in the drying season and between 14.70 μgC/l and 28.33 μgC/l in the raining season. The biovolume oscillated between 0.151 μm3/l and 0.728 μm3/l in the drying season and between 0.221 μm3/l and 0.591 μm3/l in the raining season. These results suggest that there is a relationship between the bacterian community and the trophic state at the eutrophic environments where the bacterian community exists with higher results (density and biomass) due to major quantity of carbon available in the environment proceeding from the antropogenic actions. Studies about the quantity of (DOC) dissolved organic carbon, possible relationship among the bacterian and fitoplanktonic communities and predatories taxes of the picoplankton by the microzooplankton are needed at tropical environments to understand the bacterian dynamic in those environments.
Estabilidade assintótica global para equações diferenciais no plano
(Universidade Federal de São Carlos, 1999-05-25)
Peixoto, Magda da Silva
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Santos Filho, José Ruidival Soares dos
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https://lattes.cnpq.br/6112529384454347
;
https://lattes.cnpq.br/0413910306376054
Let x! = f(x) be a system of differential equations in the plane where / is C1. This work gives sufficient conditions which guarantee that the basin of attraction of an equilibrium point is the plane. This monograph reports the contribuition given by Gasull, Llibre e Sotomayor to the problem. The above work presents some useful technics to the general problem.
Desenvolvimentismo e educação: o ensino médio no período de 1956 a 1961
(Universidade Federal de São Carlos, 1999-06-30)
Ramos, Denise de Amorim
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Bittar, Marisa
;
https://lattes.cnpq.br/3059723520472948
;
https://lattes.cnpq.br/7068646365478561
The government proposals for education, between the years 1956-61, appear linked to the idea that the educational system should be intrinsically linked to the set of structural reforms that were necessary to overcome the conditions of underdevelopment. With the consolidation of the industrial sector and the intention of accelerating economic development, the government, in those years, applied the policy identified with the economic model of association of capitals. The goals program, an instrument of the economic policy of the Juscelino Kubitschek government, referred essentially to the importance of the entry of capital, of foreign technology in the country for the construction of the Brazilian economy, and mainly for the realization of its projects. Comprising thirty sectors, this program highlighted the goals related to the economy: energy, transport, food, basic industry - including, in the last goal, the training program for technical personnel - capable of providing the infrastructure and superstructure for the transformation of the economic structure. The targets program led to a substantial modification, in the political sense, of Brazilian economic development. The nationalist ideology, assumed in previous years by a nationalist economic policy, was formulated contradictorily through the conditions of economic dependence. The national-developmentalist ideology proclaimed in this period was constituted in the Superior Institute of Brazilian Studies (ISEB), which was granted as a nucleus of great importance for the advice of the government of Juscelino Kubitschek. In other words, the developmental thinking of the Instituto Superior de Estudos Brasileiros was connected, in several fundamental points, with the developmentalism of Juscelino Kubitschek. President Kubitschek, when defending the importance of the country's economic development, always mentioned the need to link education to development. In the goals program, the education plan for development defended technical-professional education as a process consistent with Brazilian development. Considering the academic education of high school ineffective for young people in practical life, Juscelino urgently mentioned the adjustment of this level of education and, therefore, attributed fundamental importance to the capacity of qualified labor in the performance of the various sectors of economic production. In this way, professional education was present at all times, configuring itself as a primordial element for the promotion of economic development, according to the official proposal. The present work therefore intended to analyze and understand the relationships between economic and social policy, ideology and secondary education in the period 1956-61, precisely when the binomial development and vocational education began to become the ideology of the elites and their intellectuals for the Brazilian problem.
Caracterização ambiental, florística e fitossociológica de uma Unidade de Conservação. Caso de estudo: Estação Ecológica de São Carlos, Brotas, SP
(Universidade Federal de São Carlos, 1999-11-18)
Feliciano, Ana Licia Patriota
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Cavalheiro, Felisberto
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https://lattes.cnpq.br/0158443345380578
The present work was carried oput to develop na environmental characterization and diagnosis of the Ecologic Station of São Carlos and to estabilish a basic for the knowledge of the ecology of the arboreal species present in this fragment of semideciduous seasonal forest to support the planning and management of this conservation unit, and also to allow the maintenance and conservation of theirs existing natural resources. The Ecological Station of São Carlos, located between the municipalities of São Carlos and Brotas, São Paulo State, Brazil, with an area of 75,26 ha, it is a forest fragment constituted of a deciduous seasonal forest and is limitd by sugar-cane crops and the Santana dam. As one of the Conservation Units of the São Paulo State without scientific information, it deserves a study about its characterization and boundaries together whith the knowledge of its floristics and phytosociology, to elaborate its zoning, using the Geographic Information System (GIS/IDRISI). The use of GIS was important to the environmental characterization of the area and its boundaries, to provide information on its hydrography, altimetry, slopes, soil, municipalies boundaries, road system, use and soil cover, which resulted in the thematic maps (altimetric, hydrographic, etc) and the environmental zoning. To evaluate the consequences of the fragmentation process of the study area, in view of the unknown biologic diversity, specially vegetation, the floristic and phytosociologic surveys were carried out as a starting point for various works to be further developed in the area. The study of the floristics and phytosociology of the arboreal stratum was carried out by means of four transects, in which blocks of 10 x 10 m were established. In addition, the level of infestation by vines on the trees and dead trees was evaluated. The survey allowed the identification of 97 species distributed among 37 families, from which Fabaceae and Meliaceae contributed with the highest number of species. Fifteen individuais were not identified at species level. From this total, four were identified at family level, ten at genus level and one is unknown. The diversity index obtained for the species in the studied area was of 3.55 nats/species. Three of the species found, Zanthoxylum riedelianum Engl., Trichilia hirta L., and Astronium fraxinifolium Schott are included among the endangered species, in the vulnerable category. With the results of arboreal flora found in the survey. The richness of families and species was found to be quite similar when compared to studies of other fragments of the State of São Paulo. The need of elaborating and accomplishing a specific management plan for the area is assential for maintenance and conservation of the associeated genetic resources of this conservation unit, due to the agricultural use of its boundaries.
Desenvolvimento sustentável e a sociedade da informação: uma parceria natural?
(Universidade Federal de São Carlos, 2000-01)
Furnival, Ariadne Chloe Mary
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https://lattes.cnpq.br/1291482506649810
Na forma de uma revisão da literatura, é examinada a hipótese de que o advento da chamada "sociedade pós industrial" ou "sociedade da informação" tem dado lugar a um período de atividade socioeconômico que representa uma mudança radical do modo anterior de desenvolvimento. É discutido o consenso de que a dinâmica desta nova forma de sociedade favorece um tipo de desenvolvimento econômico e social ecologicamente mais sustentável, principalmente porque o novo paradigma tem como seu eixo a informação e atividades relacionadas a ela, o que promoveria uma suposta "desmaterialização" da sociedade. A questão das formas com as quais este novo paradigma de desenvolvimento pode, ou não, afetar os chamados "países recém desenvolvidos" é também discutida.
Caracterização ambiental da reserva extrativista Chico Mendes (Acre-Brasil): subsídios ao plano de manejo
(Universidade Federal de São Carlos, 2000-02-25)
Costa, Suely de Souza Melo da
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Santos, José Eduardo dos
;
https://lattes.cnpq.br/8533387365058570
The main objective of this work was the environmental characterization of 'Reserva Extrativista Chico Mendes , a Protected Area located in the state of Acre, Brazil. This analysis had a view to achieving a general diagnosis of the reserve environmental situation in the face of patterns of land and resource utilization and to providing an ecological basis for the planning of the sustainable exploitation of its natural resources. The methodology employed in this work involved the elaboration of a georeferenced digital data bank with thematic maps and morphometric information on hydrography, elevation, slope, soils, roads and human activities within the reserve area and in its surroundings (10 km buffer zone). Landscape structural elements were analyzed in 3 hydrographic basins identified in the hydrography map. These basins were further divided into 4 management units on which our study was focused. Our results show that RECM presents only 1% of its area modified by anthropic activities, heterogeneously distributed throughout the reserve and mainly associated to the location of colocações. The reserve surroundings have 16, 73% of its area modified by anthropic activities mainly located south and southeastern to the reserve. Predominant land uses in these areas constitute extensive cattle-raising and agriculture. We conclude from this analysis that the RECM has been playing its role as a Protected Area of sustainable use, particularly due to its great extension and low human demographic density. However its surroundings are fairly overtaken by various anthropic activities what suggests an urgent need for observing legal aspects of land utilization in the 10 km buffer zone around the reserve as well as constantly monitoring human activities within this zone and in its surroundings.
Programação da produção : uma abordagem por redes neurais artificiais.
(Universidade Federal de São Carlos, 2000-02-27)
Terra, Ana Rita Tiradentes
;
Pereira, Neocles Alves
;
https://lattes.cnpq.br/3744216524256924
;
https://lattes.cnpq.br/2309862893058719
Production scheduling finds in the most detailed and complex level of production planning and control systems. Due to its nature combinatorial, several methods have been proposed to solve it. Among them there are the techniques of simulation systems and artificial intelligence approaches. This work presents a procedure of solution of production scheduling, through a hybrid model of simulation systems and artificial neural networks. In this procedure, the purpose of the artificial neural network is to learn the relationships between the priority rules designated to the machines of a production system, and the values of performance measures used to evaluate the scheduling. The objective is to analyze the differentiation among a group of combinations of priority rules through the evaluation of four performance measures. Results are presented and commented, highlighting the capacity of generalization of the hybrid model in prescribing priority rules to the machines, based on values of performance measures established by the user.
Avaliação do desenvolvimento do Camurim Centropomus parallellus (Poey, 1860) em água doce, submetido á alimentação artificial
(Universidade Federal de São Carlos, 2000-02-28)
Cavalheiro, José Marcelino de Oliveira
;
Pereira, José Arlindo
;
https://lattes.cnpq.br/7067270608207536
;
https://lattes.cnpq.br/9600132550882670
Experiments with snook cultivation, Centropomus parallelus, aiming at increasing the continental pisciculture, mainly in northeast Brazil, were carried out in two stages. The first one was carried out at the laboratory of the Federal University of Paraíba, aiming to determine the optimum diet for increasing snook weight, in a 3 X 3 factorial treatment using feeds containing 35, 40, and 45% of crude protein and 3000, 3100, and 3200 kcal energy. The nine diets used here were prepared from ingredients obtained in the localities of the present study. They were added to 45 aquaria (50 L capacity each) with alevins obtained from spawning performed at a laboratory of the federal University of Santa Catarina, southern region of Brazil, presenting an initial average weight of 1.70g and stocked in a density ca 20 fish/m2, during a period of nine weeks. The best performance concerning the snook protein requirement was obtained by using 45% crude protein diet and with intermediary energy levels of 3100 kcal. On the second stage, fieldworks were performed in the municipalities of São Bento and Bananeiras, located in the mesoregion of sertão (microregion of Catolé do Rocha ) and mesoregion of agreste (microregion of Brejo ) in Paraíba State, respectively, where development of snooks obtained from spawning and fed with the best feed determined on the first stage, was estimated. The same management procedures were utilized in both localities. In São Bento, two aquaria (270m2 each) belonging to the fish farming Fazenda PROSAL Aquacultura S/A were utilized, from 26th May/1998 to 26th May/1999. In Bananeiras, two tanks (100m2 each) belonging to the Pisciculture Station of IBAMA (Insitute for the Environment and Natural Resources) were utilized, from 11th June/1998 to 11th June/1999. Both places were selected because they have the greatest number of pisicultures in Paraíba State. High fluctuations of limnological variables, mainly nutrients (ammonium, nitrite, and nitrate) occurred during the experiments acting upon snook, which showed to be a rough species. A positive and significant correlation (p (< ou =) 0.05) was obtained between zooplancton belonging to Other Organisms group (ostracods, chironomids, oligochaetes, insects larvae, etc) and the Weight Increase Rate. However, among the natural food occurring in the cultivation ponds (in São Bento) cladocerans were the snook favourite food, whereas in the tanks (in Bananeiras) Other Organisms group was its favourite food. Through the best adjusted values index (r2) obtained from several growth mathematical equations used here, the polynomial model showed to be noteworthy, despite significant differences between the snook groups development from the aquaria and from the tanks was not obtained.