A historia da ginastica ritmica em Campinas

Universidade Estadual de Campinas . Faculdade de Educa����o F��sica

Escola Nacional de Educa����o Fisica e Desportos : uma possivel historia

Universidade Estadual de Campinas . Faculdade de Educa����o F��sica

Habilidade motora fundamental : analise comparativa entre situa����o laboratorial e "natural"

Universidade Estadual de Campinas. Faculdade de Educa����o F��sica

Effect of ultrasonic instrumentation on the bond strength of crowns cemented with zinc phosphate cement to natural teeth. An in vitro study

Several studies have reported the benefits of sonic and/or ultrasonic instrumentation for root debridement, with most of them focusing on changes in periodontal clinical parameters. The present study investigated possible alterations in the tensile bond strength of crowns cemented with zinc phosphate cement to natural teeth after ultrasonic instrumentation. Forty recently extracted intact human third molars were selected, cleaned and stored in physiologic serum at 4��C. They received standard preparations, at a 16�� convergence angle, and AgPd alloy crowns. The crowns were cemented with zinc phosphate cement and then divided into four groups of 10 teeth each. Each group was then subdivided into two subgroups, with one of the subgroups being submitted to 5,000 thermal cycles ranging from 55 �� 2 to 5 �� 2��C, while the other was not. Each group was submitted to ultrasonic instrumentation for different periods of time: group 1 - 0 min (control), group 2 - 5 min, group 3 - 10 min, and group 4 - 15 min. Tensile bond strength tests were performed with an Instron testing machine (model 4310). Statistical analysis was performed using ANOVA and Tukey's test at the 5% level of significance. A significant reduction in the tensile bond strength of crowns cemented with zinc phosphate and submitted to thermal cycles was observed at 15 min (196.75 N versus 0 min = 452.01 N, 5 min = 444.23 N and 10 min = 470.85 N). Thermal cycling and ultrasonic instrumentation for 15 min caused a significant reduction in tensile bond strength (p < .05).

Evolu����o morfom��trica dos anexos embrion��rios e fetais bovinos obtidos por monta natural, com 10 a 70 dias da gesta����o

O per��odo inicial da gesta����o de bovinos �� caracterizado por grandes perdas embrion��rias. Considerando a import��ncia deste fator no ��mbito da reprodu����o animal foram estudados os anexos embrion��rios e fetais bovinos fecundados por monta natural de 15-70 dias de gesta����o, com o objetivo de estabelecer par��metros morfom��tricos da placenta na fase inicial da gesta����o. Com uso de um paqu��metro foram realizadas mensura����es do comprimento (cr��nio caudal), largura (latero lateral) e altura (dorso ventral) das membranas corioalant��ide e amni��tica. O in��cio da forma����o dos cotil��dones foi observado e quantificado, assim como, o peso placent��rio. O peso m��dio do saco gestacional aumentou com o evoluir da idade gestacional, entretanto, o crescimento foi acelerado a partir de 20-30 dias de gesta����o. O comprimento cr��nio caudal e dorso ventral da membrana corioalant��ide e do ��mnio apresentaram crescimento lento e gradual com o evoluir dos per��odos gestacionais analisados. Com 30-40 dias de gesta����o, os primeiro cotil��dones j�� eram visualizados e contatos com facilidade na superf��cie cori��nica. Os per��odos de crescimento coincidiram com os maiores ��ndices de perdas gestacionais em bovinos. Os par��metros aqui analisados poder��o servir para futuras investiga����es dos anexos embrion��rios de organismos manipulados em laborat��rio.

Natural history and population data of fishes in caves of the Serra do Ramalho karst area, Middle S��o Francisco basin, northeastern Brazil

During the exploration and mapping of new caves in Serra do Ramalho karst area, southern Bahia state, cavers from the Grupo Bambu�� de Pesquisas Espeleol��gicas - GBPE (Belo Horizonte) noticed the presence of troglomorphic catfishes (species with reduced eyes and/or melanic pigmentation), which we intensively investigated with regards to their ecology and behavior since 2005. Non-troglomorphic fishes regularly found in the studied caves were included in this investigation. We present here data on the natural history of two troglobitic (exclusively subterranean troglomorphic species) fishes - Rhamdia enfurnada Bichuette & Trajano, 2005 (Heptapteridae; Gruna do Enfurnado) and Trichomycterus undescribed species (Trichomycteridae; Lapa dos Peixes and Gruna da ��gua Clara), and non-troglomorphic Hoplias cf. malabaricus, probably a troglophile (able to form populations both in epigean and subterranean habitats) in the Gruna do Enfurnado, and Pimelodella sp., a species with a sink population in the Lapa dos Peixes.

Metronidazole release using natural rubber latex as matrix

Natural Rubber Latex (NRL) can be used successfully in controlled release drug delivery due to their excellent matrix forming properties. Recently, NRL has shown to stimulate angiogenesis, cellular adhesion and the formation of extracellular matrix, promoting the replacement and regeneration of tissue. A dermatological delivery system comprising a topically acceptable, inert support impregnated with a metronidazole (MET) solution was developed. MET 2-(2- methyl- 5-nitro- 1H- imidazol- 1-yl) ethanol, has been widely used for the treatment of protozoa and anaerobic bacterial infections. MET is a nitroimidazole anti-infective medication used mainly in the treatment of infections caused by susceptible organisms, particularly anaerobic bacteria and protozoa. In a previous study, we have tested NRL as an occlusive membrane for GBR with promising results. One possible way to decrease the inflammatory process, it was incorporated the MET in NRL. MET was incorporated into the NRL, by mixing it in solution for in vitro protein delivery experiments. The solutions of latex and MET were polymerized at different temperatures, from -100 to 40 ��C, in order to control the membrane morphology. SEM microscopy analysis showed that the number, size and distribution of pores in NRL membranes varied depending on polymerization temperature, as well as its overall morphology. Results demonstrated that the best drug-delivery system was the membrane polymerized at -100 ��C, which does release 77,1% of its MET content for up 310 hours.

Natural rubber latex used as drug delivery system in guided bone regeneration (GBR)

In this work, we propose natural rubber latex (NRL) membranes as a protein delivery system. For this purpose Bovine Serum Albumin (BSA) was incorporated into the latex solution for in vitro protein delivery experiments. Different polymerization temperatures were used, from -10 to 27 ��C, in order to control the membrane morphology. These membranes were characterized by Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), as well as the Lowry Method to measure the BSA release. SEM and AFM microscopy analysis showed that the number, size and distribution of pores in NRL membranes can be varied, as well as its overall morphology. We have found that the morphology of the membrane is the predominant factor for higher protein release, compared with pore size and number of pores. Results demonstrated that the best drug-delivery system was the membrane polymerized at RT (27 ��C), which does release 66% of its BSA content for up to 18 days. Our results indicate that NRLb could be used in the future as an active membrane that could accelerate bone healing in GBR.

Caracteriza����o mec��nica e t��rmica da borracha natural formulada e vulcanizada dos clones: GT 1, IAN 873, PB 235 e RRIM 600

Neste trabalho estudou-se o desempenho mec��nico e t��rmico de compostos de borracha natural (Hevea brasiliensis) de 4 diferentes clones (GT 1, IAN 873, PB 235 e RRIM 600) cultivados no Estado de S��o Paulo, assim como de uma mistura destes clones e de uma borracha comercial, GEB-1. Estas borrachas foram formuladas e vulcanizadas com tempos de 5, 7 e 9 minutos. A caracteriza����o foi realizada por calorimetria explorat��ria diferencial, termogravimetria, ensaios de resist��ncia �� tra����o, an��lise din��mico-mec��nica, medidas de dureza Shore A, microscopia eletr��nica de varredura e espectroscopia na regi��o do infravermelho. Os resultados permitiram concluir que o tempo de vulcaniza����o e o tipo de clone n��o influenciaram na temperatura de transi����o v��trea (Tg) dos compostos. Os valores de Tg obtidos por DMA foram de cerca de -62 ��C, e os resultados ensaios de dureza apresentaram valores pr��ximos de 60 para todos os compostos estudados. Os ensaios de resist��ncia �� tra����o mostraram que o melhor desempenho mec��nico foi obtido pelo clone RRIM 600. De acordo com os resultados obtidos neste trabalho, todos os clones atingiram as propriedades reportadas na literatura, podendo ser utilizados, em princ��pio, nas ind��strias de artefatos de borracha separadamente ou na forma de mistura.

Natural occurrence, biological activities and synthesis of eight-, nine-, and eleven-membered ring lactones

The natural occurrence, biological activities and synthetic approaches to natural eight-, nine-, and eleven-membered lactones is reviewed. These medium ring lactones are grouped according to ring size, and their syntheses are discussed. The structures of some natural products early identified as medium-ring lactones were revised after total synthesis.

New data on the natural history and description of the immatures of Fulgeochlizus bruchi, a bioluminescent beetle from Central Brazil (Elateridae, Pyrophorini)

The mature larva and pupa of Fulgeochlizus bruchi (Cand��ze, 1896) are described and illustrated. Bioluminescent patterns are also given. Comments, new data on the first instar larva and natural history data are presented. The first instar larvae differ from the mature larvae mainly in their chaetotaxy, which is sparse and more symmetrically distributed.

Levantamento da fauna de Triatominae (Hemiptera: Reduviidae) em ambiente domiciliar e infec����o natural por Trypanosomatidae no Estado de Mato Grosso do Sul

Entre 2000 a 2004, foi realizado levantamento da fauna de Triatominae (Hemiptera: Reduviidae) e exame de infec����o natural por Trypanosomatidae, no Estado de Mato Grosso do Sul. Um total de 13.671 esp��cimes foram capturados. Na an��lise faun��stica das esp��cies capturadas, Triatoma sordida foi caracterizada como muito abundante, muito freq��ente, constante e dominante. Os ��ndices de infec����o natural para Trypanosoma cruzi apresentaram os valores de 3,2% para Panstrongylus geniculatus, 0,6% para Rhodnius neglectus e 0,1% para Triatoma sordida, apesar do Estado de Mato Grosso do Sul apresentar-se livre da transmiss��o vetorial end��mica.

Natural antioxidant from yerba mat�� (Ilex paraguariensis St. Hil.) prevents hamburger peroxidation

The aim of this study was to evaluate whether yerba mat�� alcoholic extracts at very low concentrations (0.01 and 0.1%), prevent/retard lipid peroxidation in beef hamburgers without impairing sensory acceptability. For this TBARs and hexanal levels, fatty acid profile and cholesterol oxides were evaluated as oxidation parameters in beef hamburgers during 90 days' storage. The addition of 0.01% yerba mat�� ethanolic extracts proved inefficient in restraining the lipid peroxidation while the addition of 0.1% resulted in efficient antioxidant activity. Sensory evaluation of hamburger containing 0.1% yerba mat�� ethanolic extracts showed good acceptability. Yerba mat�� ethanolic extracts could entirely or partially replace the phenolic synthetic antioxidants in beef hamburgers only when used at above legally allowed concentrations for antioxidant additives (0.01%).

Calibration of the dietary data obtained from the Brazilian center of the Natural History of HPV Infection in Men study: the HIM Study

The objective of this study was to estimate the regressions calibration for the dietary data that were measured using the quantitative food frequency questionnaire (QFFQ) in the Natural History of HPV Infection in Men: the HIM Study in Brazil. A sample of 98 individuals from the HIM study answered one QFFQ and three 24-hour recalls (24HR) at interviews. The calibration was performed using linear regression analysis in which the 24HR was the dependent variable and the QFFQ was the independent variable. Age, body mass index, physical activity, income and schooling were used as adjustment variables in the models. The geometric means between the 24HR and the calibration-corrected QFFQ were statistically equal. The dispersion graphs between the instruments demonstrate increased correlation after making the correction, although there is greater dispersion of the points with worse explanatory power of the models. Identification of the regressions calibration for the dietary data of the HIM study will make it possible to estimate the effect of the diet on HPV infection, corrected for the measurement error of the QFFQ.

Entomological characterization and natural infection of anophelines in an area of the Atlantic Forest with autochthonous malaria cases in mountainous region of Esp��rito Santo State, Brazil

No Esp��rito Santo, os casos de mal��ria aut��ctone est��o distribu��dos na regi��o serrana pr��ximo aos fragmentos de Mata Atl��ntica. Uma vez que alguns aspectos da doen��a s��o obscuros, a detec����o das poss��veis esp��cies de vetores pode auxiliar na elucida����o de incertezas epidemiol��gicas. Estudos entomol��gicos e de infec����o natural foram realizados com anofelinos (Diptera: Culicidae) capturados no munic��pio de Santa Tereza, ES. Capturas mensais foram realizadas de mar��o de 2004 a fevereiro de 2006. Armadilhas CDC-CO2 foram utilizadas do crep��sculo (18:00h) ao amanhecer (6:00h), para capturar anofelinos nos seguintes habitats: pr��ximo ao domic��lio e ��rea aberta (solo), margem e interior da mata (solo e copa). Armadilhas Shannon tamb��m foram utilizadas nos mesmos locais que as de CDC-CO2. Capturou-se o total de 2.290 anofelinos distribu��dos em 10 esp��cies. A maior frequ��ncia relativa foi de Anopheles (Kerteszia) cruzii Dyar & Knab / A.(K.) homunculus Komp, sendo a maioria capturada em CDC-CO2 instalada na copa da mata. A principal esp��cie capturada em armadilha Shannon foi A.(Nyssorhynchus) strodei Root. O maior n��mero de anofelinos foi capturado entre julho e setembro das 18:00h ��s 22:00h. Provavelmente A.(K.) cruzii �� respons��vel pela transmiss��o da mal��ria dentro ou pr��ximo aos fragmentos de Mata Atl��ntica. Entretanto, a participa����o de outras esp��cies n��o pode ser ignorada, visto que 53 por cento da amostragem foi constitu��da pelo subg��nero Nyssorhynchus. A detec����o de Plasmodium vivax no t��rax de A. cruzii, A. parvus (Chagas) e A. galvaoi Causey, Deane & Deane por meio de PCR refor��a esse argumento