Avaliação de escova ultrassônica em pacientes sob terapia ortodôntica. Estudo in vitro, clínico e microbiológico

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Adubação nitrogenada em milho em semeadura direta e cultivo convencional na região Meio-Norte do Piauí

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Dermatophytosis diagnosed at the Evandro Chagas Institute, Pará, Brazil

Dermatophytosis is caused by a dermatophyte fungus that affects the stratum corneum and keratinized tissue. Dermatophyte fungus has been reported worldwide as the causative agent of dermatophytosis, but the etio-epidemiological aspects of these mycoses in the state of Pará remain unknown. The purpose of this study was to describe the etio-epidemiological profile of dermatophytosis diagnosed in patients at the Evandro Chagas Institute from May 2005 to June 2006. A total of 494 patients were admitted, and their samples were collected, submitted for direct microscopic examination using 20% KOH and cultured in Sabouraud and Mycosel medium. The identification was based in macro and microscopic characteristics. Direct examinations were positive in 13% (66/494) of the patients, and agent isolation by cultivation of the biological sample was successful in 4% (20/494), with a high prevalence of T. mentagrophytes (40%; 8/20). Dermatophytosis was more frequent in women (58%; 38/66). Fifty-two percent (21/38) of the cases were children with an average age of 8 years. The most frequent clinical presentation was Tinea corporis (55%, 36/66). For the cases in which the dermatophyte agent was not isolated, we discuss the factors that may be interfering with isolation. Tinea corporis occurred more frequently observed when T. mentagrophytes and T. rubrum were the major etiologic agents.

Influência de dois tipos de retentores intra-radiculares e do tipo de coroa total na resistência e modo de fratura de raízes de incisivos superiores

Pós-graduação em Odontologia Restauradora - ICT

Correlação entre a escala internacional de acidente vascular cerebral do Instituto Nacional de Saúde (NIHSS) e a penetração laríngea e aspiração laringotraqueal no acidente vascular cerebral isquêmico

Pós-graduação em Bases Gerais da Cirurgia - FMB

Prática de caminhada no lazer e no deslocamento e associação com fatores socioeconômicos e ambiente percebido em adultos

O objetivo do presente estudo foi analisar a associação da prática de caminhada no domínio lazer e no domínio deslocamento com a percepção do ambiente em adultos residentes no município de Rio Claro - SP. Foi realizado um estudo transversal de base domiciliar com amostra composta por 470 adultos (45,7±17,8 anos). Os sujeitos responderam o Questionário Internacional de Atividades Físicas (versão longa) e uma versão adaptada da Escala de Mobilidade Ativa no Ambiente Comunitário, que foi utilizada para investigar a percepção do ambiente construído e social. Para análise dos dados foi realizada uma regressão logística, sendo considerado como desfecho, caminhar ≥10minutos/semana no domínio lazer e no deslocamento. A prevalência de sujeitos que realizavam caminhada no lazer foi de 20,6% e 58,9% para a caminhada no deslocamento. A prevalência de caminhada no deslocamento entre as mulheres foi maior quando comparado com os homens (66,3% e 50,0%, respectivamente) e menor no domínio lazer (19,8% e 21,7%, respectivamente). A caminhada como forma de deslocamento foi associada com sexo feminino, classe econômica mais baixas (C, D e E) e percepção da disponibilidade da presença de faixa de pedestre. Para a caminhada no domínio lazer as variáveis pessoais e do ambiente que se associaram foram: idade (60 anos ou mais), classe econômica (B2, C, D e E), convite de amigos e/ou vizinhos para a prática. Os resultados apresentados demonstram que há uma associação entre a percepção do ambiente e a prática de caminhada no lazer e no deslocamento.

Decomposição da palhada de forrageiras em função da adubação nitrogenada após o consórcio com milho e produtividade da soja em sucessão

The objective of this study was to evaluate the straw decomposition of the Urochloa and Panicum after intercropped with corn and nitrogen fertilization, as well as, the agronomic performance of soybean in succession. The experiment was conducted in an Oxisol in Cerrado conditions under no-tillage eight years ago. After the corn harvest intercropped with grass and cutting of forage homogenization were applied N rates (0, 50, 100 and 200 kg ha-1 of N - urea source) in coverage. The plots consisted of Urochloa brizantha,Urochloa ruziziensis and Panicum maximum Tanzânia and Mombaça sown at the time of corn sowing and subplots composed by accumulated amounts of nitrogen applied in forage plants prior to the soybean cultivation (0, 250, 500 and 1000 kg ha-1 of N, after five cuts). The experimental design was a randomized block with four replications in a split plot. Soon after the last cut of the forage, proportionate amount of fresh mass of the species of each subplot was wrapped in nylon bags called Litter Bags, these being deposited in direct contact with the soil, to determine the time of decomposition of the dry mass during a period of 150 days. The nitrogen doses, as well as, the corn intercropped with forages (except with Mombaça) interfere similarly in the straw decomposition of forage and in the soybean yield in succession. All the consortiums of corn and nitrogen fertilization predecessors determined that, at 60 days after desiccation and cutting, still remained between 50 and 60% of the initial straw for no-tillage system.

Degradação de membrana impermeabilizante de polietileno de alta densidade usada em tanques de armazenamento de vinhaça

High-density polyethylene (HDPE) water-proof membranes are used as coatings in vinasse (leachate from sugar cane) storage tanks. The leachate is pumped into the tanks at temperatures of 80-90 °C. Due to these high temperatures and acidity of the waste, these membranes can be degraded, cracked and then loose the function for which they have been designed. This may cause contamination of the soil and groundwater. This study evaluated the effect of vinasse in HDPE membranes after 4 months of exposure in a controlled environment. An aggressive, alkaline pH liquid (sodium hydroxide) was also used. The objective was to evaluate the membrane resistance in contact with acidic and alkaline residues. Physical and mechanical tests, measurement of the carbon black content and thermo gravimetric analysis (TGA) were used to determine degradation of polymer membranes after chemical immersion. While sodium hydroxide resulted caused only minor changes in the physical properties, vinasse induced a thickness change of 7.8%. With immersion in vinasse, an average decrease in strength and deformability (yield) of 34% and 23.5% were measured, respectively. The stiffness increased by 7.8% (average) and the tear strength decreased by 2.7% (average).

Leaf-litter decomposition of the mangrove species Avicennia schaueriana, Laguncularia racemosa and Rhizophora mangle

This study evaluated the decomposition process of leaf litter from the main Brazilian mangrove species Avicennia schaueriana, Laguncularia racemosa and Rhizophora mangle. Senescent leaves were collected, dried and placed in nylon bags with different mesh sizes (fine: 2x2mm and coarse: 8x8mm). The bags were distributed over the sediment, and replicates of each species and mesh size were collected periodically over 4months. In the laboratory, the dry weight of the samples was measured, and the decomposition coefficient (k) for each species and mesh size was obtained over time. All species showed a rapid decomposition rate at the beginning of the experiment, followed by a slower but steady rate of decomposition over time. The rate of leaf litter decomposition was highest in A. schaueriana, intermediate in L. racemosa and lowest in R. mangle. The difference was mainly linked to the activity and abundance of detritivores, together with the different litter quality of the species, which determined their palatability and probably influenced the decomposition process.

Giberelina, citocinina e auxina na qualidade química de bagas de uva superior seedless

Trials were carried out in Juazeiro, Bahia State, Brazil, aiming to test plant regulators composed by gibberellin, cytokine and auxin effects on chemical quality of Superior Seedless grape berries. The first trial studied the effects of Stimulate (R) (bio regulator) and X-Cyte (R) (cytokine) associated to a new gibberellin formulation (N-Large (R)) and associated to Pro-Gibb (R), which is a product used as source of gibberellin. Products were sprayed at berries development phase (18, 21, 51 and 56 days after spur-pruning). Treatments were: T1: Pro-Gibb (R); T2: Stimulate (R) (Dose 1); T3: Stimulate (R) (Dose 2); T4: Stimulate (R) (Dose 3); T5: Pro-Gibb (R) + X-Cyte (R) (Low Dose - DB); T6: Pro-Gibb (R) + X-Cyte (R) (Intermediate Dose - DM); T7: Pro-Gibb (R) + X-Cyte (R) (High Dose - DA); T8: N-Large (R); T9: N-Large (R) + X-Cyte (R) (DB); T10: N-Large (R) + X-Cyte (R) (DM); T11: N-Large (R) + X-Cyte (R) (DA). The second trial aimed to assess the effect of the new gibberellin formulation (N-Large (R)) associated or not with cytokine (X-Cyte (R)) also sprayed straight over the bunches at berries development phase (17, 55 e 66 days after spur-pruning). Treatments were: T1: Pro-Gibb (R) - blank; T2: N-Large (R) (DB); T3: N-Large (R) (DM); T4: N-Large (R) (DA); T5: N-Large (R) (DB) + X-Cyte (R) (DB); T6: N-Large (R) (DB) + X-Cyte (R) (DM); T7: N-Large (R) (DB) + X-Cyte (R) (DA); T8: N-Large (R) (DM) + X-Cyte (R) (DB); T9: N-Large (R) (DM) + X-Cyte (R) (DM); T10: N-Large (R) (DM) + X-Cyte (R) (DA); T11: N-Large (R) (DA) + X-Cyte (R) (DB); T12: N-Large (R) (DA) + X-Cyte (R) (DM); T13: N-Large (R) (DA) + X-Cyte (R) (DA). Experimental design was random blocks with four repetitions with each repetition/parcel having three useful plants in the same row. At harvest, when bunches average had soluble solids over 15 degrees Brix, berries were collected for soluble solids, pH, titratable acidity analysis as well as (SS/AT) ratio calculation. In both trials, plant regulators evaluated did not provide significant changes on chemical quality of 'Superior Seedless' grape berries. Therefore, the lack of differences on response between the commercially used product (Pro-Gibb (R)) and the other products tested (Stimulate (R), X-Cyte (R) e N-Large (R)) prove the last as promising for the ` Superior Seedless' grape cultivation, leaving a larger range of alternative for grape farmers in the Sao Francisco Valley, Bahia.

Analysis of localized muscle fatigue in elderly women with and without a history of falls using electromyographic signal frequency parameters

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Combining Experimental Evidence and Molecular Dynamic Simulations To Understand the Mechanism of Action of the Antimicrobial Octapeptide Jelleine-I

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Corrosion-fatigue life of commercially pure titanium and Ti-6Al-4V alloys in different storage environments

Statement of problem. Removable partial dentures are affected by fatigue because of the cyclic mechanism of the masticatory system ansi frequent insertion and removal. Titanium and its alloys have been used in the manufacture of denture frameworks; however, preventive agents with fluorides are thought to attack titanium alloy surfaces.Purpose. This study evaluated, compared, analyzed the corrosion-fatigue life of commercially pure titanium and Ti-6Al-4V alloy in different storage environments.Material and methods. For each metal, 33 dumbbell rods, 2.3 mm in diameter at the central segment, were cast in the Rematitan system. Corrosion-fatigue strength test was carried out through a universal testing machine with a load 30% lon er than the 0.2% offset yield strength and a combined influence of different: environments: in air at room temperature, with synthetic saliva, and with fluoride synthetic saliva. After failure, the number of cycles were recorded, and fracture surfaces were examined with on SEM.Results. ANOVA and Tukey's multiple comparison rest indicated that Ti-6Al-4V alloy achieved 21,269 cycles (SD = 8,355) against 19,157 cycles (SD = 3,624) for the commercially purr Ti. There were no significant differences between either metal in the corrosion-fatigue life for dry specimens, but when the solutions were present, the fatigue life was significantly reduced, probably because of the product-ion of corrosion pits caused by superficial reactions.

The edentulous ridge expansion (ERE) technique an experimental study in the dog

Objective: To compare the healing and bony crest resorption at implants installed conventionally or applying an edentulous ridge expansion (ERE) technique in the maxilla.Material and methods: In six Labrador dogs, the first and second maxillary incisors were extracted bilaterally. In the left side of the maxilla (Test), the flaps were elevated and the buccal plate of the alveoli and septa was removed. After 3 months of healing, partial-thickness (split) flaps were dissected and the residual alveolar bone was exposed. In the right side of the maxilla, an implant was installed conventionally (Type IV; Control) while, in the left side, the ERE technique was adopted. Hence, an expansion of the buccal bony crest was obtained, and the implant was subsequently installed (Test). After 3 months of healing, biopsies were obtained and ground sections were prepared for histological analyses.Results: A buccal vertical resorption of the bony crest of 2.2 +/- 1.2 mm and 1.6 +/- 0.7 mm was found at the test and control sites, respectively. The difference, however, did not reach statistical significance. The coronal level of osseointegration at the buccal aspect was located at 3.1 +/- 1.0 mm and 2.2 +/- 0.7 mm from the implant shoulder at the test and control sites, respectively, the difference being statistically significant. The mean values of the mineralized bone-to-implant contact (MBIC%) ranged from 43% to 48% at the buccal and lingual sites. No differences reached statistical significance.Conclusions: Implants installed by applying an ERE technique may osseointegrate similarly to conventional implant installation. However, vertical and horizontal resorption of the displaced buccal bony wall occurred as well.

The metapleural glands of fungus-growing and non-fungus-growing ants: Ultrastructural study

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)