Browsing by Issue Date, starting with "2003-09-11"

Filter results by year or month

Now showing 1 - 20 of 23279

Efeito alelopático de Andira humilis Mart.ex Benth. e de Anacardium humile Mart. na germinação e no crescimento de Lactuca sativa L. e de Raphanus sativus L
(Universidade Federal de São Carlos, 2003-09-11)
Periotto, Fernando
;
Lima, Maria Inês Salgueiro
;
https://lattes.cnpq.br/2171993314203162
;
Perez, Sonia Cristina Juliano Gualtieri de Andrade
;
https://lattes.cnpq.br/9973185407856723
Atividade alelopática de extratos aquosos de Aristolochia esperanzae O. Ktze e Ocotea odorifera (Vell) Rohwer na germinação e crescimento de Lactuca sativa L. e Raphanus sativus L.
(Universidade Federal de São Carlos, 2003-09-11)
Gatti, Ana Beatriz
;
Lima, Maria Inês Salgueiro
;
;
Perez, Sonia Cristina Juliano Gualtieri de Andrade
;
https://lattes.cnpq.br/9973185407856723
The objective of this work was analyze the effects of aqueous extracts of Aristolochia esperanzae organs in the germination and early growth of lettuce and radish. All the prepared extracts obeyed the ratio of 100g of plant material + 300 mL of distilled water to produce an extract 100% concentrated. This extract was diluted with distilled water to produce final concentrations of 75, 50 and 25%. In the germination tests the extracts of leaf, stem, root, fruit and flower, with concentration of 100, 75, 50, 25% were evaluated. In the seedlings growth, extracts of leaf, stem and root were used in the concentration of 100 and 50%. In the germination tests, four replicates of 30 seeds were distributed in Petri dishes with two filter paper moistened with 5 mL of the extracts, dried during 12 hours and moistened again with 4,5 mL of distilled water. In the first test, the rate and germination percentage was evaluated. In the growth test, the seeds were previously germinated (2-4mm root length) and transferred to plastic boxes containing the filter paper or coconut fiber, moistened with the extracts. The aerial part height, root length, dry mass and the presence of abnormalities in the seedlings were evaluated. Both tests were maintained at constant temperature (27ºC). The obtained results showed that the leaf extracts affected strongly the germination percentage and all the extracts, in different concentrations, delayed the germination of lettuce and radish seeds. In the growth test could be verified that the stem and root extracts caused abnormalities in the seedlings. The seedlings grown in filter paper presented bigger growth inhibition in relation to seedlings from coconut fiber. The extract concentration was the main responsible for the incentive or inhibition caused on lettuce and radish seedlings growth.
O desenvolvimento profissional de uma professora de Biologia de um grupo de pesquisa: um estudo de caso
(Universidade Federal de São Carlos, 2003-09-11)
Calzolari Neto, Anselmo João
;
Freitas, Denise de
Proposição de valores de referência para concentração de metais e metalóides em sedimentos limnicos e fluviais da bacia hidrográfica do Rio Tietê, SP
(Universidade Federal de São Carlos, 2003-09-12)
Nascimento, Marcos Roberto Lopes do
;
Mozeto, Antonio Aparecido
;
https://lattes.cnpq.br/6594211224864538
;
https://lattes.cnpq.br/7346670090999065
This project represents the first efforts in Brazil in the proposition and establishment of reference concentration values for metals and metalloids in limnic and fluvial sediments. The selected study site is the Tietê River basin (São Paulo State, southeast region), a watershed which is under significative environmental impact and degradation since the onset of the Brazilian revolution at early-midd 50 s. In order to consolidate the analytical values 1,100 analyses were performed encompassing 95 sampling points in 29 municipalities, from the upper stream parts of the river down to its mouth at the Paraná River, covering an extension of approximate 800 km. Sediment samples were collected in small streams and rivers as closest as possile to their upper reaches, as well as in rivers and reservoirs in locations minimally affected by human contamination. Samples were initially sieved for separation of the particles <63 µm, dryed at 50°C, and extracted with a mixture of strong acid solution (HNO3, HF, HClO4 and HCl). Chemical analyses were performed by induced coupled plasma atomic emission spectrometry for Cr, Ti, Zn and V, and via atomic absorption spectrometry using conventional flame for Co, Cu, Ni and Pb, graphite furnace for Cd and Ag, hydride generation for As and Se, and cold vapor for Hg. U and Th were analysed by molecular absorption spectrophotometry using the chromogenic reagent Arsenazo III. The reference concentrations determined by this study showed significant differences with respect to the assumed global geological reference for some elements; differences were also detected among the concentrations of the same element from different basin regions and are attributed to differences in regional geochemical characteristics. As a consequence of these lithological variations, four different sets of reference concentration values are proposed valid to the different regions of the studied basin. This study also presents application of different sediment quality classification models and potential ecological risk index for Bariri, Billings, Rasgão, Barra Bonita and Promissão reservoirs.
Planejamento urbano e conservação ambiental. Estudo de caso: Goiânia-GO
(Universidade Federal de São Carlos, 2003-09-12)
Mota, Luciana Costa
;
Cavalheiro, Felisberto
;
https://lattes.cnpq.br/0158443345380578
The main objective of this work is contribute to Goiânia city environmental planning, with special focus in fragile (sensitive) areas, in valley areas. We started with biophysical characterization of the area, identifying and delimitating, in the Urban Zone (ZU) and Expanded Urban Zone (ZEU), fragile (sensitive) areas (areas with medium and high Natural Erosion Potential PNE and/or areas related to the hidrological cycle - floodplans). We also identified federal and municipal (county) regulations, and the proposals of Goiânia Director Plans for valley areas. Then we evaluated their adequability, foccusing environmental conservation. Finally, based on actual diagnosis of land use in valley areas, Environmental Protected Zones I (ZPA-I) associated to hidrography and the fragile (sensitive) areas within these areas, we evaluated the applicability of laws and plans for valley areas during (along) the city development and grow. Evaluating Legal rules and planning guidelines, we identified that since 1960, permanent preservation areas with at minimum 50 meters from the river flood height, should receive land uses compatible with environmental conservation (recreational, cultural, environmental education, park etc). ZU e ZEU presented 40.73% of areas with medium and high PNE in valley areas, representing 59.69% of valley areas, and 22.01% of that are legally protected by ZPAs-I. The ZPas-I represent 14.62% of ZU and ZEU (49.22% of it are represented by areas of medium and high PNE) and have only 44.21% of natural vegetation which 10.71% are within properties. Properties areas already occuppy 26.62% of ZPAs-I. In valley areas only 34.81% are vegetated, and in valley areas legally protected by ZPAs-I, 47.46% have natural vegetation. In valleys´s fragile areas 31.66% are vegetated. When those areas are protected by ZPAs-I, vegetated areas increase to 40.71%. The floodplans (within valley and legally protected by ZPAs-I) are 56.54% covered by vegetation which 13.88% are within properties. The results evidenciated that valley areas are structurally and functionally fragile (sensitive) and municipal plans and legal regulations for these areas are adequated. However, regulations measurements for buffer zones (ZPAs-I) usually don´t cover all fragille areas (areas with medium and high PNE). Finnaly the study identified insufficient urban instruments (Director Plans and land use regulations) to efectivelly protect fragile areas during (along) the city development and grow. Even dough, fragile areas within valleys, legally protected by ZPAs-I, presented better environmental conservation conditions than the others fragile areas.
Estudo das propriedades estruturais e desenvolvimento de eletrodos modificados de novas porfirinas polimetaladas
(Universidade Federal de São Carlos, 2003-09-12)
Dinelli, Luís Rogério
;
Batista, Alzir Azevedo
;
https://lattes.cnpq.br/6469642481998660
In this work we synthetisized and characterized different polymetallated pophyrins, using as precursors 5,10,15,20-piridilporphyrin and [RuCl2(CO(DMF)(PPh3)2], cis-[RuCl2(bipy)(dppb)] and mer-[RuCl3(dppb)(H2O)] as peripherical componds. The internal metals into de macrocyclic porphyrin were Co(II), Ni(II), Cu(II) and Zn(II). These complexes were characterized by several techciques such as, absorptional spectroscopy in the visible, utraviole and near infrared region, vibracional spectroscopy, cyclic voltammetry, X-ray crystallography and elemental analyses of carbon, hydrogen and nitrogen. Modified electrode was obtained using the porphyrin {Co(II)-[RuCl2(dppb)]4} by cyclic voltammetry. The modified electrode was obtained in carbon vitreos and the proposed mechanism for the formation of the film was consolidated with the existence of the intervalence transition in the near infrared, which one was attributed to intervalence transition Ru(II) → Ru(III). Such modified electrode was used for the determination, using the technique of cyclic voltammetry, of hydroquinone, 1,4-benzoquinone, dopamine, catecol, ascorbic acid and paracetamol. Dopamine and paracetamol were also analyzed in commercial medicines. Dopamine was determined in the µmol concentrations range usin squere wave voltammetry technique. The X-ray structure of to the porphyrin {Ni(II)-[RuCl3(dppb)]4} was determined. Modified electrode, obtained with the pophyron {H2-TPyP[RuCl3(dppb)]4} using the same procedure, was used as potenciometric sensor for pH measures. Langmuir-Blodgett films were obtained with the porphyrin {H2-TPyP[RuCl3(dppb)]4.
Obtenção de biovitrocerâmicas por cristalização controlada do vitro 1Na2O.2CaO.3SiO2
(Universidade Federal de São Carlos, 2003-09-16)
Guanabara Júnior, Paulo
;
Rodrigues, Ana Candida Martins
;
https://lattes.cnpq.br/4499231813051400
Glass-ceramics used as implant in tissue attachment bioactive classification type, show better mechanical strength than related glasses or ceramics, but without significant bioactivity loss. It was not analysed the bioactivity of a glass-ceramic from glasses with chemical composition 1Na2O. 2CaO. 3SiO2 (1N2C3S). This type of glass that does not possess phosphate in its composition, has its bioactive behavior known of literature in the glass phase and fully crystallized phase. With the objective to use such glass-ceramics as bioactive implant, the bioactivity was analysed in the range between glass 1N2C3S and the crystal. For this purpose sample of glass-ceramics were made with several crystallized fractions, by controlled crystallization, through thermal treatments in the range of 570oC to 700oC. These glass-ceramics were exposed to a solution that simulates the fluid of the body (SBF-K9) for several periods of time. The rate of hydroxycarbonateapatite (HCA) formation was determined using Fourier transform infrared spectroscopy (FTIR). The simultaneous mechanisms of performance were observed; a non-phosphat bioactive crystal phase 1N2C3S and the phosphorus ions in solid solution which are released from the structure promoting a HCA layer formation, already indicated in previous studies, of glass-ceramics compositions in vitro tests. All the glassceramics showed the formation of a well-developed HCA layer on its surface at less than 100 hours exposure time.
Modelo de ferramenta para avaliação e diagnóstico das organizações de aprendizagem
(Universidade Federal de São Carlos, 2003-09-22)
Hallgren, Nadir Ramos de Almeida
;
Alliprandini, Dário Henrique
This work was elaborated from a bibliography review in which were extracted elements explored and used by the researcher in the context of a new perspective that served as base for the proposal of an integrated and ample pattern about learning organizations. With this new pattern the researcher elaborated a tool in order to use it as a reference for initiatives in companies, both for valuation or diagnosis and for implementation guide of this management pattern. The function of the mentioned pattern, which was called FADOA, is to become a great facilitator of practical and/or strategic use for companies and for people who study the theme, especially, because of its capacity to evidence a very synthetic and very simple classification index of the company development level from the complex universe of the learning organizations. Since the beginning of this work there was preoccupation about simplifying without reducing, in other words, to transform a complex thing in a simple one without promoting a linear and poor reduction, following the orientation of the anthropologist LÉVI-STRAUSS (1990) and always considering that the scientific explanation is not the way of the complex fact to the simple one, but the trail to make complexity more intelligible. The pattern was put into practice and it was successful at the company called Caterpillar do Brasil Ltda.
Desenvolvimento de procedimentos automáticos para a determinação de 3-hidroxibutirato, glicose e colesterol em soro de sangue animal empregando multicomutação em fluxo
(Universidade Federal de São Carlos, 2003-09-23)
Pires, Cherrine Kelce
;
Reis, Boaventura Freire dos
;
https://lattes.cnpq.br/7619359855870896
In the present work, in flow injection systems were developed for the determination of important metabolic parameters, such as 3-hydroxybutyrate, glucose and cholesterol in animal blood serum. The analysis modules were developed based on the multicommutation concept, whose main characteristics favor the processing of many samples. For this, three-way solenoid valves were used, as discreet commutation devices, for the intermittent addition of samples and reagents, controlled by a microcomputer equipped with a commercial electronic interface (PCL-711S). The control and data acquisition programs were written in Quick BASIC 4.5. The proposed methods are based on enzymatic reactions. For these, the enzymes were immobilized in glass beads and packed in mini-columns of acrylic (15 x 5 mm i.d.). The determination of 3-hydroxybutyrate was based on the reduction of nicotinamide adenine dinucleotide (NAD+), forming NADH, which was monitored at 340 nm. The analytical curve of the proposed system presented a linear dependence on concentration for concentrations between 25 and 150 mg L-1, an analytical frequency of 60 determinations per hour, relative standard deviation of 1.4% (n=17), estimated for a sample containing 75 mg L-1 of 3-hydroxybutyrate, and a detection limit of 2 mg L-1. Other observed favorable aspects were low reagent consumption of NAD+ (0.9 mg) and 3-hydroxybutyrate dehydrogenase (8 µg), and 200 µL of sample per determination. Another analysis module was developed for glucose determination using chemiluminescence detection. The glucose was oxidized by glucose oxidase to gluconic acid and hydrogen peroxide. The hydrogen peroxide formed reacted with the luminol, in the presence of the catalyst hexacyanoferrate (III), producing a blue luminescence at a wavelength around 420 nm. The analytical curve of the proposed system was linear for concentrations between 50 and 600 mg L-1, showed a relative standard deviation <3.0% (n=20) for a sample containing 300 mg L-1 of glucose, a detection limit of 14.0 mg L-1, and an analytical frequency of 60 determinations per hour. The sample, hexacyanoferrate (III) and luminol consumption was 46 µL, 10.0 mg and 0.2 mg per determination, respectively. To conclude this work, the determination of cholesterol was proposed. The esters of cholesterol were hydrolyzed by cholesterol esterase to free cholesterol and fatty acid. The free cholesterol was oxidized by cholesterol oxidase to cholestenone and hydrogen peroxide. The hydrogen peroxide reacted with luminol and hexacyanoferrate (III), being detected by chemiluminescence. The proposed system presented an analytic frequency of 40 determinations per hour, relative standard deviation of 2.3% (n=20) for a sample containing 75 mg L-1 of cholesterol, a linear dependence in the concentration range of 25 and 125 mg L-1, and an estimated detection limit of 3.7 mg L-1. The reagent consumption was 0.22 mg of luminol and 2.75 mg of hexacyanoferrate (III) per determination. Once the best analysis conditions were found, a set of samples was analyzed using the three proposed systems. Applying the t test among the results obtained with the proposed systems and those obtained with the manual procedures of analysis (kit), no significant difference was observed at the 95% confidence level.
Reiki: um estudo localizado sobre alternativas, ideologia e estilo de vida
(Universidade Federal de São Carlos, 2003-09-23)
Babenko, Paula de Campos
;
Cardoso, Marina Denise
Escola do futuro: desafios e perspectivas de um projeto inovador da escola sob a ótica de seus sujeitos.
(Universidade Federal de São Carlos, 2003-09-26)
Monaco, Fabíola Maria
;
Mizukami, Maria da Graça Nicoletti
In the current context of intense technological and paradigmatic transformations within the many institutions of the societies, the School of the Future Project (SFP) was conceived and materialized in municipal schools of Basic Education having in its scope the ideal of an inclusive and "technologically-up-to-date" education tailored for the demand of its community. In view of recent contributions of scientific literature in the educational domain regarding the centrality of the educator in the formative process, considering also its subjectivity in association with the available objective conditions (such as didactic resources, institutional culture etc.), this work aims at the perspectives of projects such the above mentioned one and is focused on answering to the question: "what conceptions, yearnings and expectations are present, under the optics of its individuals, in schools that are in the imminentcy of the implantation of technological innovation projects ?" Having as its main data source the reports "collected by means of half-structuralized interviews" directed to the individuals more directly involved in the SFP, the results show differences on the individual s degrees of involvement, which are in proportional relation to the institutional hierarchic thereby highlighting the importance of "(re)thinking" about the school structure while a community that teaches and that learns. Also it as verified the concurrency between the new challenges considered for the innovative project and the old difficulties that characterize the school (fragmentation and overload of both the functional and the organizational structure of the school) what it seems to be aggravated by the vision of the different individuals regarding the historically instituted relations between the school's internal and external instances (understanding these last ones as the educational agencies and politics). Moreover, some "veteran questions" of the educational universe seem to re-emerge driven by the feeling of instability generated by a technological innovation project within the school, namely: the relation school/family/community, curricular election and contents teaching, skills and professional development of the educator, discourses and reductionist practices of the pedagogical act. Concluding, we consider the importance of the school in the transformation vertex intended for a faired and more humanized society, and also propose some perspectives so that initiatives such as the School of the Future Project can be effective by overcoming ruptures among specificities, attributions and instances involved in projects carried on within schools, as well as overcoming of the trends toward the emphasis on the pedagogical seduction, on the undefinitions, instabilities and resistances against the necessary rearrangements in the organizational and functional structure of the school (culture, subjectivities, spaces, times, demands, "customers") and, finally, on a existential crisis of the school about "why and how" to educate and to educate themselves.
Efeitos da prolactina sobre a massa óssea de ratas ovariectomizadas
(Universidade Federal de São Carlos, 2003-09-26)
Driusso, Patricia
;
Nonaka, Keico Okino
;
https://lattes.cnpq.br/4551036775738296
Prolactin (PRL) has a great number of biologic functions in many species. Beyond the well known effects on reproduction, lactation and maternal behavior, many studies have showed the effects of PRL on the mineral transportation, calcium metabolism and bone. PRL seems to have an effect on the bone, acting direct or indirectly. The aim of this study was to investigate the effects of the PRL on bone mass of female ovariectomized (ovx) Wistar rats, through physical, biomechanical and biochemical analysis of the femur, biochemical of serum and densitometry of the tibia. The rats had 4 months of age in the beginning of the study and were divided in 3 groups: basal group, hiperPRL group (intact, ovx+sham e ovx + 2 grafted anterior pituitary under the kidney capsule) and hipoPRL group (intact+saline, ovx+saline and ovx rats treated with bromocriptina-3 mg/Kg). Statistical analysis of results was performed by a two way analysis of variance (ANOVA) followed by a Student Duncan test. The ovx promoted the figher weight gain and bone growth. It was observed that the ovx+hipófise group showed a significant decreased in maximum force and stiffness when compared with the intact group, and a significant decreased in the densitometry, mineral bone density and percentage of mineral material of the femur when compared with the ovx+sham group. The ovx+ bromocriptine group showed a significant increase in maximum force, stiffness and bone volume of the right femur and the bone mineral content of the tibia when compared with the ovx+saline and basal groups. The lack of the PRL maintains the biomechanical parameters of the ovx rats statistically equal to the intact animals, showing a protective action of the PRL against the osteopenic effect promoted by ovariectomy.
Quietas e caladas: reflexões sobre as atividades de movimento com crianças na educação infantil
(Universidade Federal de São Carlos, 2003-09-26)
Iza, Dijnane Fernanda Vedovatto
;
Mello, Maria Aparecida
;
https://lattes.cnpq.br/8338726751746542
;
https://lattes.cnpq.br/6758025601578309
Influência das condições ambientais e técnicas de produção sobre a incidêcia de enfermidades no cultivo de camarão marinho, Litopenaeus vannamei, no estado do Ceará
(Universidade Federal de São Carlos, 2003-09-30)
Martins, Pedro Carlos Cunha
;
Pereira, José Arlindo
;
https://lattes.cnpq.br/7067270608207536
This study investigated the influence of environmental conditions and grow-out management practices on the occurrence of diseases during farming of the penaeid shrimp Litopenaeus vannamei. The work was conducted in commercial grow-out ponds located adjacent to two estuaries in the Eastern coast of the State of Ceará, Brazil. One semi-intensive production cycle was monitored throughout the dry season. In the wet season of 2002, three production cycles (two semi-intensive and one super-intensive) were studied. Environmental conditions and management techniques adopted were characterized through tabular and descriptive analyses. Microbiological conditions in the sediment and water of the farmed and natural ecosystems, as well as in cultured shrimp were studied through standard plate counting using PCA and TCBS media. Presumptive bacterial colonies of the genus Vibriowere isolated and identified. A general evaluation of shrimp health status was conducted through wet mounting and histopathology of shrimp organs. Final shrimp grow-out data indicated management practices and environmental conditions positively influenced the balance between the two ecosystems. The type of rearing system used did not influence the number of bacterial present in each ecosystem and in farmed shrimp. Also, the incidence of bacterial and (or)virus lesions in shrimp was not related to the level of intensification. Changes in shrimp health conditions as observed by wet mount analysis were in most cases related to farming conditions. This confirmed management techniques are also appropriate to the preventive sanitary management in shrimp farming. According to the results obtained in commercial ponds, it was concluded the occurrence of diseases is not related to the type of rearing system adopted by the shrimp aquaculture operation. However management practices and environmental conditions, reflected in the adoption of best management practices in each grow-out cycle, are vital to the health status of each pond's ecosystem.
Estudo da purificação do àcido clavulânico utilizando processo contínuo de adsorsão
(Universidade Federal de São Carlos, 2003-10-02)
Almeida, Renata Maria Rosas Garcia
;
Hokka, Carlos Osamu
Clavulanic acid (CA), a beta-lactam antibiotic, has been known for its commercial and therapeutic importance. This antibiotic is produced by an actinomicete, Streptomyces clavuligerus, and has a combined use with penicillins, acting as inhibitor of beta-lactamase enzymes. Due this importance, some studies on clavulanic acid production has been developed at DEQ-UFSCar. As a natural consequence of these studies and the global knowledge of this process it was necessary to develop a work studying clavulanic acid purification. The adsorption process was chosen to be studied as the process of clavulanic acid recovery and purification. In the present work a continuous adsorption process for clavulanic acid purification was proposed. This process utilized two stirred tanks (CSTR) with recycle of the adsorbent material. The adsorbent chosen to this process was the ion exchange resin Amberlite IRA 400 in the chloride cycle. First, it was necessary to study the adsorption and desorption kinetics and the clavulanic acid equilibrium isotherms in that resin to investigate the influence of temperature, pH and clavulanic acid initial concentration. The degradation rate of clavulanic acid in basic and acidic solutions is very high; high temperatures also increase the degradation rate. Consequently, studies on clavulanic acid degradation were carried out in the same temperature and pH conditions of the kinetics studies. A mathematical model was proposed to describe the adsorption and desorption processes and the kinetics and transport parameters were determined. The continuous process was also mathematically modeled to obtain preliminary data to carry out the clavulanic acid continuous experiments. The parameters utilized in the continuous adsorption process were optimized by response surface analysis to maximize yield and concentration and purification factors. Experiments of the continuous adsorption process were carried out in some different conditions. The continuous process like proposed was operationally viable, but the concentration and purification factors obtained were lesser than those obtained in fixedbed experiments.
Magnetismo a temperatura ambiente em polímeros derivados de politiofeno sintetizados eletroquimicamente
(Universidade Federal de São Carlos, 2003-10-08)
Forner, Alessandra Alves Correa
;
Souza, Ernesto Chaves Pereira de
;
https://lattes.cnpq.br/1505400360366643
In this thesis two polymers obtained from alkyl derivatives of thiophene, poly(3-methylthiophene) and poly(3-hexylthiophene) were studied. The effects of preparation variables on their electrochemical properties using the factorial design were analyzed. The preparation variables investigated were the supporting electrolyte and the synthesis applied potential. Then, a factorial design 22 was performed for each polymer and was made too a third factorial design 22, comparing the monomer and the potential. All the electrochemical analyses were made to understand the polymer behavior as a first step for the magnetic study. The magnetic properties of poly(3-methylthiophene) were analyzed and the weak ferromagnetic phase was observed in their pressed pellets as the polymer was partially doped with ClO4 - anions. This magnetic behavior was observed in full range from 1.8 K to 300 K with measurements performed using a SQUID magnetometer. The magnetization depends on the pressure used to prepare the pellets and the water content of the solvent used for the synthesis. The intrinsic character of this behavior was shown from atomic absorption analysis that discarded contamination. It was observed that the polymer shows different magnetic phases: diamagnetic, paramagnetic, ferromagnetic, antiferromagnetic and metamagnetic.
Instituição militar e política, uma abordagem antropológica (1964-1974)
(Universidade Federal de São Carlos, 2003-10-09)
Frederici, Sandra Maria
;
Leirner, Piero de Camargo
The purpose of this dissertation is thinking the relationship between the military institution and politics in the period between 1964-1974, by an anthropological reading of the processes occurred in the core of the military hierarchy. Therefore, its analysis deals with the military careers constructed in this period, as well as the intramilitary political arrangements, as fields able to better evidence the movements in the command sequence under the new position assumed in the political context. In this way, based on an approach that considers the army as a specific social organization, that discussion aims to treat its relation with politics through its internal articulations, all of them concerning, as a last resort, to the central dimension of the military universe: the hierarchal organization.
Conhecimento ecológico, regras de uso e manejo local dos recursos naturais na pesca do alto-médio São Francisco, MG
(Universidade Federal de São Carlos, 2003-10-09)
Thé, Ana Paula Glinfskoi
;
Nordi, Nivaldo
;
https://lattes.cnpq.br/8168865557947289
The use of nature by local communities is based in a set of knowledge, practices and believes, developed through human culture and historical experience with the environment. Small-scale commercial fishermen from Upper-Medium São Francisco River, object of this study, are influenced by the dynamics of the environment cycle and by the ecology and biology of fishery resources, maintaining a very close relationship with them, for developing new knowledge and understandings which can provide better conditions of survive. More than that, the small-scale fishermen have self-organized for planning and practicing local management of fishery resources, which include local rules or institutions which define the rights and duties in the access and use of resources. The study of local ecological knowledge and common property systems developed by these communities are the mainly goal of ethnoecology science and of researches in common property systems, which support them as alternatives to the traditional scientific ecology and management of natural resources. This research was carried out between 1999 and 2001 with 7 field trips of 15 days each. Open and structured interviews were carried out, complemented by direct observation of the fishing activity, and the collect of fishery yield. The small-scale fishermen of Upper-Medium São Francisco River have demonstrated to pursue a detailed comprehension about the ecology and biology of the aquatic system and its fishery resources, on which they have based their fishery practices and common property systems, expecting to guarantee efficiency with sustainability. These local ecological knowledge and practices can contribute to develop a new interdisciplinary scientific view about ecology and management, putting together scientific and local experiences to produce a better use of natural resources, for these and the next generations.
Professores de educação física: diversidade e práticas pedagógicas.
(Universidade Federal de São Carlos, 2003-10-10)
Stefane, Claudia Aparecida
;
Mizukami, Maria da Graça Nicoletti
Atividade enzimática, cinética e modelagem matemática da decomposição de Ultricularia breviscapa da lagoa do Óleo (Estação Ecológica de Jataí, Luiz Antônio - SP)
(Universidade Federal de São Carlos, 2003-10-10)
Santino, Marcela Bianchessi da Cunha
;
Bianchini Júnior, Irineu
;
https://lattes.cnpq.br/0659731944736389
This work approached the enzymatic activities, kinetics and mathematical modeling of the decomposition of Utricularia breviscapa from ºleo lagoon (21° 36' S and 47° 49' W), Luiz Antonio, SP. The experiments described the decomposition in function of temperature, availability of oxygen and carbon source. Samples of this macrophyte and water were collected in the oleo lagoon; incubations were prepared and maintained in controlled conditions. The results allow us to conclude that: (i) the U. breviscapa detritus are a heterogeneous substrata and presented two fractions: a labile/soluble (COPLS » 23.5%) and a refractory (COPR » 76.5%). The mass losses coefficients of the labile/soluble fractions (kT = 1.5 day-1) were higher than the refractory fractions (309 times in the aerobic condition and 469 times in the anaerobic condition). The increasing temperature and the dissolved oxygen concentrations favored the mineralization of the refractory fractions. The COPR mineralization in the aerobic conditions was faster than in the anaerobic conditions (1.5 times); (ii) the enzymatic activities of the cellulase presented a temporal pattern that was affected by the temperature, availability of oxygen and carbon source; (iii) stoichiometric ratio (O/C) varied in function of temperature and time; (iv) the oxygen uptake coefficients (kd) presented low variation in function of increasing temperature; (v) the increment on temperature favored the CH4 formation in the anaerobic decomposition of U. breviscapa and its emissions tended to occur earlier; (vi) probably, the enzymatic degradation of the cellulose in the anaerobic strata of sediments contributed to methanogenesis in the oleo lagoon; (vii) the simulations indicated that heterotrophic potentials of the oleo lagoon presents low variations during the year; the favorable period for detritus cycling is in the spring (October - November), in this period increments in mineralization occurs as function of increasing temperature and high availability of oxygen.