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Search Results: 1 - 10 of 78496 matches for " Lopes-Silva Adriene Mara Souza "
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Evaluation of the permeability of the furcation area of deciduous molars conditioned with Er:YAG laser and cyanoacrylate
Lopes-Silva, Adriene Mara Souza;Lage-Marques, José Luiz;
Pesquisa Odontológica Brasileira , 2003, DOI: 10.1590/S1517-74912003000300003
Abstract: the purpose of this study was to evaluate in vitro the dentin permeability of the deciduous pulp chamber floor after employing 2-octyl cyanoacrylate and er:yag laser. twenty four deciduous molars were used, divided into four groups. after chemical-surgical preparation each group received a different treatment: group 1 - control, without treatment; group 2 - the floor of the pulp chamber was covered with a fine layer of 2-octyl cyanoacrylate; group 3 - the floor of the pulp chamber was irradiated with er:yag laser (250 mj, 10 hz for 30 seconds, 80 j of energy and 320 pulses), and covered with a fine layer of 2-octyl cyanoacrylate; and group 4 - the floor of the pulp chamber was irradiated with er:yag laser set at the parameters already described. after that the specimens received application of 0.5% methylene blue, for 15 minutes. the teeth were cut, photographed, and the digitalized images were analyzed using the imagelab program. the results obtained were submitted to statistical analysis. group 4 (er:yag) presented the largest averages in percentage of dye penetration area (19.5%), followed by group 1 (11.1%), group 3 (1.4%) and group 2 (0.2%). the experimental model allowed to conclude that the specimens conditioned with 2-octyl cyanoacrylate (group 2) and er:yag laser associated to 2-octyl cyanoacrylate (group 3) presented a decrease in permeability, and the specimens treated with er:yag laser (group 4) presented an increase in permeability of the analyzed area.
Evaluation of the permeability of the furcation area of deciduous molars conditioned with Er:YAG laser and cyanoacrylate
Lopes-Silva Adriene Mara Souza,Lage-Marques José Luiz
Pesquisa Odontológica Brasileira , 2003,
Abstract: The purpose of this study was to evaluate in vitro the dentin permeability of the deciduous pulp chamber floor after employing 2-octyl cyanoacrylate and Er:YAG laser. Twenty four deciduous molars were used, divided into four groups. After chemical-surgical preparation each group received a different treatment: Group 1 - control, without treatment; Group 2 - the floor of the pulp chamber was covered with a fine layer of 2-octyl cyanoacrylate; Group 3 - the floor of the pulp chamber was irradiated with Er:YAG laser (250 mJ, 10 Hz for 30 seconds, 80 J of energy and 320 pulses), and covered with a fine layer of 2-octyl cyanoacrylate; and Group 4 - the floor of the pulp chamber was irradiated with Er:YAG laser set at the parameters already described. After that the specimens received application of 0.5% methylene blue, for 15 minutes. The teeth were cut, photographed, and the digitalized images were analyzed using the ImageLab program. The results obtained were submitted to statistical analysis. Group 4 (Er:YAG) presented the largest averages in percentage of dye penetration area (19.5%), followed by Group 1 (11.1%), Group 3 (1.4%) and Group 2 (0.2%). The experimental model allowed to conclude that the specimens conditioned with 2-octyl cyanoacrylate (Group 2) and Er:YAG laser associated to 2-octyl cyanoacrylate (Group 3) presented a decrease in permeability, and the specimens treated with Er:YAG laser (Group 4) presented an increase in permeability of the analyzed area.
Stratigraphy of the Lower Bambuí Group in the Arcos Region (MG): a Contribution from Boreholes
Matheus Kuchenbecker,Leonardo Lopes-Silva,Felipe Pimenta,Ant?nio Carlos Pedrosa-Soares
Geologia USP : Série Científica , 2011,
Abstract: This study presents the fi rst results of the sample analysis of two boreholes drilled in a quarry located in the Arcos region(MG). Petrographic analysis (macro- and microscopic observations) was performed and made possible to study in detailan approximately 175 meter-section, which shows the basement and 10 sedimentary units. The basement is represented bydark green to gray fi ne- to medium-grained granodiorite. At the base of the sedimentary sequence, Unit 1 is representedby a decimetric layer of polymictic diamictite and is overlain by the impure limestones of Unit 2. Unit 3 is carbonatic andcontains calcilutite and layers of carbonaceous shale. This unit gradually changes to Unit 4, which is composed of marland mudstone. Unit 5 is composed of a thick sequence of massive calcarenites, which begins to show lamellar layers andmicrobial structures in Unit 6. Unit 7 is similar to the previous one, but contains several intraclastic layers. The numberof lamellar layers decreases sharply, giving rise to a thick interval with considerable granulometric variations in Unit 8, which grades to the oolitic calcarenite of Unit 9. At the top of the sequence, Unit 10 is a thick package of stromatolitic dolarenite. Thisstratigraphic arrangement allows the identifi cation of progradational/retrogradational trends. The sedimentological features, especially those present in the basal portion, suggest that at least part of the carbonatic sequence could represent a cap carbonate, supporting a glacial origin for the diamictite. Other data also collected from the basal units suggest that changes occurred in the source area at the beginning of the fi lling of the basin.
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability
Marcos David Silva-Cavalcante, Carlos Rafaell Correia-Oliveira, Ralmony Alcantara Santos, Jo?o Paulo Lopes-Silva, Hessel Marani Lima, Romulo Bertuzzi, Marcos Duarte, David John Bishop, Adriano Eduardo Lima-Silva
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0072025
Abstract: The purpose this study was to examine the effects of caffeine ingestion on performance and energy expenditure (anaerobic and aerobic contribution) during a 4-km cycling time trial (TT) performed after a carbohydrate (CHO) availability-lowering exercise protocol. After preliminary and familiarization trials, seven amateur cyclists performed three 4-km cycling TT in a double-blind, randomized and crossover design. The trials were performed either after no previous exercise (CON), or after a CHO availability-lowering exercise protocol (DEP) performed in the previous evening, followed by either placebo (DEP-PLA) or 5 mg.kg?1 of caffeine intake (DEP-CAF) 1 hour before the trial. Performance was reduced (?2.1%) in DEP-PLA vs CON (421.0±12.3 vs 412.4±9.7 s). However, performance was restored in DEP-CAF (404.6±17.1 s) compared with DEP-PLA, while no differences were found between DEP-CAF and CON. The anaerobic contribution was increased in DEP-CAF compared with both DEP-PLA and CON (67.4±14.91, 47. 3±14.6 and 55.3±14.0 W, respectively), and this was more pronounced in the first 3 km of the trial. Similarly, total anaerobic work was higher in DEP-CAF than in the other conditions. The integrated electromyographic activity, plasma lactate concentration, oxygen uptake, aerobic contribution and total aerobic work were not different between the conditions. The reduction in performance associated with low CHO availability is reversed with caffeine ingestion due to a higher anaerobic contribution, suggesting that caffeine could access an anaerobic “reserve” that is not used under normal conditions.
Acute effects of aerobic exercise on mood and hunger feelings in male obese adolescents: a crossover study
Mara Lofrano-Prado, James O Hill, Humberto José Silva, Camila Rodrigues Freitas, Sandra Lopes-de-Souza, Tatiana Lins, Wagner do Prado
International Journal of Behavioral Nutrition and Physical Activity , 2012, DOI: 10.1186/1479-5868-9-38
Abstract: Subjects were eight male obese adolescents (age 15.44?±?2.06y; BMI 33.06?±?4.78?kg/m2). Each subject underwent three experimental trials: 1) Control, seated for 30?min; 2) Low intensity exercise (LIE) - exercise at 10% below ventilatory threshold (VT); 3) High intensity exercise (HIE) - exercise at 10% above VT. Anxiety (STAI Trait/State), mood (POMS) and hunger (VAS) were assessed before and immediately after the experimental sessions. Comparisons between trials and times were assessed using Kruskal-Wallis and Wilcoxon tests, respectively. Associations between variables were described using a Spearman test.The largest increase in hunger was observed after LEI (914.22%). Both exercise sessions increased anxiety, fatigue and decreased vigor (p?<?0.05).Acute exercise bouts are associated with negative changes in anxiety and mood, and with increases in hunger in obese adolescents.Obesity is a global epidemic and is the result of positive energy balance where, over time, energy intake exceeds energy expenditure (EE) [1]. In adolescents, as with children and adults, the treatment of obesity is classically based on lifestyle changes involving increased physical activity and improved diet [2]. Exercise can help in weight loss by facilitating fat loss [3], but, rarely is exercise alone considered to be an effective form of weight control [4]. For exercise to be effective in weight loss, subjects would need to achieve a significant increase in energy expenditure with exercise that was not opposed by increased energy intake. The increase on EE could be followed by increased hunger and energy intake, and this overeating pattern could reverse the negative energy balance provide by exercise [5,6].Further, exercise is only effective if subjects adhere to the exercise program, and there is some evidence that adherence to exercise is less in obese subjects [7,8]. It is possible that low adherence to exercise might occur in obese subjects via dose-dependent negative impacts of exerc
Qualidade da carne ovina submetida ao processo de salga
Silva Sobrinho, Américo Garcia da;Zeola, Nivea Maria Brancacci Lopes;Souza, Hirasilva Borba Alves de;Lima, Tania Mara Azevedo de;
Ciência e Tecnologia de Alimentos , 2004, DOI: 10.1590/S0101-20612004000300011
Abstract: the effects was studied of different salt quantities during salting process in qualitative parameters of sheep meat. were used 18 boned legs from ram lambs ? ile de france ? ideal, slaughtered with 30kg of body weight. the treatments were: t1 - control; t2 - salting at 15%; t3 - salting at 20%. meat slices were washed with water to remove salt excess and dried in shadow. analysis were done before salting and 67 hours after salting. cooking losses, tenderness, colour, humidity (2, 4, 16, 28, 40 and 67 hours after the beginning of the process) and number of tbars (2-tiobarbituric acid reactive substances) were done on semimembranosus muscle. different quantities of salt had no effect on meat lightness (p>0.05), although redness and yellowness were affected (p<0.05). cooking losses and humidity were lower (p<0.05) for salted meat. the tenderness was higher (p<0.05) for meats submitted to control treatment and 15% of salting, compared to meats salted with 20%. meats submitted to 20% of salting showed higher number of tbars, not differing 15% of salting. the utilization of 15% of salting showed better results, with cooking losses, colour, humidity and number of tbars similar to salting at 20%, however the meat was more tender.
O PET-Saúde no Centro de Saúde Cafezal: promovendo hábitos saudáveis de vida
Teixeira, Simone;Lessa, Judith Kelly Abras;Xavier, Lilian Parreira Zebral;Costa, Mateus Figueredo Martins;Rabelo, Nívia Duarte Braga;Hans-Joachim, Menzel;Barreto, Aline Domingues;Silva, Ana Flávia Rodrigues da;Oliveira, Barbara Kellen Souza;Silva, Carlos Anderson Carvalho;Gomes, Fabrício Silva;Ireno, Gelmara Moraes;Braga, Isabela de Rezende;Guerra, Lorena Mara Mariz;Teixeira, Mariana Oliveira;Moreira, Pedro Henrique Vilela;Santos, Walter Júnior Lopes dos;
Revista Brasileira de Educa??o Médica , 2012, DOI: 10.1590/S0100-55022012000200026
Abstract: this is an experience report of the scholarship students and volunteers of health science courses of the federal university of minas gerais (ufmg) who participated in the pet-health project, under the supervision of five preceptors and one tutor. the project was carried out at the primary health care unit (phcu) cafezal in the city of belo horizonte. the objective of the project was the diffusion of healthy lifestyle concerning physical activity and nutrition. the aim of this report is the characterization of the experiences of this tutorial group. the monitors were able to experience the service routines of primary care by monitoring different activities in all sectors of the phcu-cafezal. the most relevant aspects of the project were multidisciplinary and interdisciplinary cooperation, in accordance with the principles of respect and ethics, the routine observation and operation of phcu, as well as the opportunity to apply the recently acquired academic knowledge. this teaching and learning strategy enabled the students to practice the updated principles of preventive health care adopted by sus, due to the principle of indivisibility of university extension projects, innovative teaching strategies and research.
Agronomic performance of rice to the use of urease inhibitor in two cropping systems Desempenho agron mico do arroz irrigado ao uso de inibidor de urease em dois sistemas de cultivo
Enio Marchesan,Mara Grohs,Melissa Walter,Leandro Souza da Silva
Revista Ciência Agron?mica , 2013,
Abstract: The use of urea coated with urease inhibitor may become a useful tool for increasing the efficiency of nitrogen top-dressing in rice crop, thereby reducing nutrient losses through volatilization of NH3 (ammonia). Thus, the aim of this study was to evaluate the volatilization of NH3 and the response of rice to the use of urea coated with urease inhibitor in two cropping systems, no-tillage and conventional. For this purpose, field experiments were developed in the agricultural years 2007/2008 and 2008/2009, in UFSM in Santa Maria-RS. The design was randomized blocks in bifactorial scheme (2x5) with two sources, urea and urea + NBPT and five intervals of water intake (0; 3; 6; 9; 12 days) after application of nitrogen sources. The results of two seasons show that the urease inhibitor present in urea slows and decrease the conversion of N to NH3, reducing the losses by volatilization, compared to urea without inhibitor. Among the systems, the losses are magnified in the no-tillage cropping system. The behavior of the response variable in relation to productivity is variable in two cropping systems used in this study and the stress caused to the rice plant by the late start of the irrigation is more damaging than the losses caused by the volatilization of NH3. A utiliza o de uréia recoberta com inibidor de urease pode tornar-se uma ferramenta útil para aumentar a eficiência da aduba o nitrogenada em cobertura na cultura do arroz irrigado, diminuindo assim perdas do nutriente por volatiliza o de NH3 (am nia). Com isso, o objetivo desse trabalho foi avaliar a volatiliza o de NH3 e a resposta do arroz irrigado ao uso de uréia recoberta com inibidor de urease em dois sistemas de cultivo, direto e convencional. Para tanto, conduziram-se experimentos em campo, nos anos agrícolas 2007/2008 e 2008/2009, na UFSM em Santa Maria-RS. O delineamento utilizado foi o delineamento experimental blocos completos casualizados em esquema bifatorial (2x5), com duas fontes, uréia e uréia+NBPT e cinco intervalos de início da irriga o (0; 3; 6; 9; 12 dias) após a aplica o das fontes de N. Os resultados das duas safras demonstram que o inibidor de urease presente na uréia retarda e diminui a convers o de N para NH3, reduzindo as perdas por volatiliza o, comparativamente à uréia sem inibidor. Entre os sistemas, as perdas s o potencializadas no sistema plantio direto. O comportamento da variável resposta em rela o à produtividade é variável nos dois sistemas de cultivo utilizados e o estresse causado na planta de arroz pelo atraso no início da irriga o é mais prejudicial do
The meanings of quality of life: interpretative analysis based on experiences of people in burns rehabilitation
Costa, Maria Cristina Silva;Rossi, Lídia Aparecida;Lopes, Lívia Mara;Cioffi, Caroline Lopes;
Revista Latino-Americana de Enfermagem , 2008, DOI: 10.1590/S0104-11692008000200013
Abstract: this research aimed to interpret the meanings of quality of life, taking into consideration the meanings attributed by those who have undergone serious burns, their experiences and social/cultural background. we used the ethnographic method based on modern hermeneutics. nineteen patients with burn sequelae, already discharged from the burns unit of the ribeir?o preto medical school clinical hospital participated in this study, along with their relatives. participants belong to the working class, are between 18 to 50 years old and have been in rehabilitation for at least a year. data were collected by direct observation and semi-structured interviews. the analysis was processed through the identification of units of meanings and construction of thematic nucleuses. patients and relatives reported that quality of life had changed because of physical and psychological limitations caused by the burns. the meanings of quality of life are associated with the performance of social roles and are guided by family, work, normality, autonomy and social integration.
Serum macro minerals in adults Thoroughbred horses, before and after the high intensity exercise. Macrominerais séricos em equinos atletas da ra a Puro Sangue Inglês, antes e após exercício físico de alta intensidade
Letícia Ferrari Crocomo,Mara Regina Stipp Balarin,Regina Kiomi Takahira,Raimundo Souza Lopes
Revista Brasileira de Saúde e Produ??o Animal , 2009,
Abstract: With the aim of analyzing the effect of high intensity physical activity on the serum values of macro minerals, 19 clinically health adults Thoroughbred horses, males and females from 3 to 5 years of age, were submitted to a galloping in a 2,000 meters sand track. Two blood samples were collected from each animal, one before and another after the high intensity exercise. The results had shown some significative changes (p<0.05) with an increase in the serum values of calcium and magnesium and a decrease in serum and potassium. Meanwhile, there were no alterations (p>0.05) in the concentration of phosphorus and potassium. It is concluded, therefore, that the high intensity exercise leads to transitory and physiologic changes in the serum concentration of macro minerals. Com o objetivo de analisar o efeito da atividade física de alta intensidade sobre os valores séricos dos macrominerais, 19 equinos adultos, com idade entre três e cinco anos, machos e fêmeas, clinicamente saudáveis da ra a Puro Sangue Inglês, foram submetidos ao galope de corrida em pistas de areia, na distancia de 2000 metros. De cada animal foram colhidas duas amostras de sangue, uma antes e outra após a realiza o do exercício físico de alta intensidade. A análise dos resultados obtidos demonstrou que houve altera es significativas nos valores séricos do cálcio e magnésio, que apresentaram eleva o, e do sódio e cloreto, que apresentaram redu o, enquanto n o foram verificadas varia es significativas nos teores séricos do fósforo e potássio. Conclui-se, portanto, que a atividade física de alta intensidade (galope de corrida) altera, transitória e fisiologicamente, a concentra o sérica dos macrominerais.
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