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Search Results: 1 - 10 of 129045 matches for " Túlio Vinicius Paes Dantas "
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Florística e estrutura da vegeta??o arbustivo-arbórea das Areias Brancas do Parque Nacional Serra de Itabaiana/Sergipe, Brasil
Dantas, Túlio Vinicius Paes;Ribeiro, Adauto de Souza;
Brazilian Journal of Botany , 2010, DOI: 10.1590/S0100-84042010000400006
Abstract: the serra de itabaiana national park is distinguished by its phytophysiognomic diversity, among which, a locally known as areias brancas (white sands), an open vegetation, ranging from herb-shrub to shrub-tree and classified by some authors as restinga or cerrado, depending on its size. aiming to characterize and classify vegetational type were selected two sites in areias brancas of serra de itabaiana national park and built a list following deposited material in the ase herbarium and additional sampling. to the phytosociological study it was used the wandering quarter method, sampling all individuals with trunk circumference (> 15 cm) at breast height (1.30 m). it was verified, at the areias brancas, the occurrence of 193 species belonging to 145 genera and 60 families that are mostly represented by herb and shrub species. it is noticeable the high number of species found in areias brancas when compared with studies conducted throughout the national park. there are significant floristic similarity between sampling sites, but structurally the two areas should be considered as different sucessional faces, due to variations in density, height and dominance. even with plant species in common, the areias brancas of the national park can not be classified as restinga or cerrado for not having common origins for these formations. the areias brancas should be considered as an ecological refuge, an azonal vegetation derived from the special conditions of substrate formation.
Estrutura populacional de Kielmeyera rugosa Choisy (Clusiaceae) no Parque Nacional Serra de Itabaiana, Estado do Sergipe =Population structure of Kielmeyera rugosa Choisy (Clusiaceae) at Serra de Itabaiana National Park, Sergipe State
Túlio Vinicius Paes Dantas,Adauto de Souza Ribeiro
Acta Scientiarum : Biological Sciences , 2010,
Abstract: Estudos de estrutura de tamanho e de estágios ontogênicos s o importantes para se compreender quais fatores influenciam os processos populacionais, a regenera o e a resposta a perturba es de uma popula o. Este estudo analisou a estrutura de uma popula o de Kielmeyera rugosa Choisy (Clusiaceae) no hábitat de Areias Brancas do Parque Nacional Serra de Itabaiana, Estado de Sergipe. Amostraram-se aleatoriamente 30 parcelas de 20 x 25 m, nas quais se determinou a abundancia de indivíduos jovens e adultos, a circunferência do tronco, a altura da copa e o número de caules por planta. A distribui o espacial de jovens e adultos na popula o é agregada, causada por sua predisposi o em formar grupos em locais onde há maiordisponibilidade de recursos e condi es favoráveis. Outro fator que contribui com a agrega o é a dispers o anemocórica da espécie. A popula o estudada apresentou o maior número de indivíduos nas categorias menores de altura e de DAS, indicando que a popula o está em crescimento ou em processo de autorregenera o. Há maior número de indivíduos de 2-3 m de altura, o que se deve ao fogo ou corte, eventos que n o foram capazes de interromper o processo de recrutamento ou reprodu o da espécie na área, pois n o ocorreram lacunas nas classes de diametro de caule. Studies on structure, size and ontogenic stages are important to understand which factors influence population processes, regeneration and response to disturbances of a population. This study examined thestructure of a population of Kielmeyera rugosa Choisy (Clusiaceae) in white sands habitat of Serra de Itabaiana, Sergipe State. Thirty 20 x 25 m plots were selected randomly selected, and their abundance of young and adult plants was recorded, as well as trunk circumference, crown height and number of stems per plant. The spatial distribution of young and adult population is aggregated, caused by their predisposition to form groups in localities with large availability of resources and favorable conditions. Another factor contributing to the aggregation is the anemochoric dispersion of the species. The study population had the highest number of individuals in lower classes of height, with few individuals in larger classes, indicating that the population is growing or in a process of selfregeneration.There are more individuals 2-3 meters high, due to burning or cutting. These events were not able to stop the recruitment process or reproduction of the species in the area, as observed by the lack of gaps in the classes of stem diameter.
Characterization of the vegetation of National Park Serra de Itabaiana, Sergipe-Brazil
Túlio Vinicius Paes Dantas,Adauto de Souza Ribeiro
Biotemas , 2010,
Abstract: This study aimed to map and characterize the vegetation of the National Park of Serra de Itabaiana, with emphasis on the most abundant plant species, evaluating strategies for their conservation. There was a predominance of open formations of grassy fi elds, characterized as high-altitude grassland (3,289ha), mainly in areas of slopes. The forests are characterized as ecotones between Lowland Dense Rain Forest and Semideciduous Forest (2,643ha), mostly as secondary forest. The habitat called the White Sands (347ha), previously characterized as salt marshes, only occurs on the eastern side of Itabaiana and Comprida Serras, and it has a type of physiognomy normally associated with high-altitude grassland. The disturbed areas are concentrated at the edges of the park, roads and trails used by human visitors. Of these areas, regions with exposed soils are the most abundant, occurring in a total of 699ha; the brushwood (586ha) is more frequent at the forest’s edge, originating from fi res caused by the cultivation of sugar cane; plantations and withdrawals of soil (131ha) occur in areas close to settlements.agreste; description; protected areas; white sand
Influência do intervalo de tempo entre as sess?es de alongamento no ganho de flexibilidade dos isquiotibiais
Gama, Zenewton André da Silva;Dantas, Alexandre Vinícyus Ribeiro;Souza, Túlio Oliveira de;
Revista Brasileira de Medicina do Esporte , 2009, DOI: 10.1590/S1517-86922009000200005
Abstract: context: the optimization of flexibility training is related to the use of ideal stretching parameters. however, the time interval between sessions has been little investigated. objective: to verify if the variation in time interval between stretching sessions influences in flexibility gain. methodology: twenty-eight women, average age of 22.5 ± 1.8 years, were randomly distributed into three groups. group 0x was the control and performed no stretching. group 3x (n = 10) took part in three sessions per week (interval = 48 hours) and group 5x (n = 10) in five times (interval = 24 hours). ten stretching sessions were applied (hold-relax) to the right hamstring. the measurement of active knee extension was performed using photometric analyses on autocad? 2000 software. statistical analysis was carried out with anova and newman-keuls post hoc test for a significance level of p < 0.05. results: after 10 sessions, increased flexibility was identified in the experimental groups (p < 0.01), but with no difference between them. group 3x significantly increased flexibility from the tenth day of the program (fifth session) and group 5x from the third day (third session). conclusions: stretching increases hamstring flexibility, regardless of the time between sessions (24 or 48 hours). moreover, the interval between the sessions does not influence total flexibility gain. however, with five weekly stretching sessions, flexibility increases more rapidly than it does with three, suggesting that flexibility gain is session-dependent.
Consistência de Corola
Simon, Iumna Maria;Dantas, Vinicius;
Novos Estudos - CEBRAP , 2009, DOI: 10.1590/S0101-33002009000300010
Abstract: this article tries to situate the importance of corola (2000), by claudia roquette-pinto. starting from elements that organize the figurations and ambiguities of its simulated lyricism, it identifies the peculiarity of the feminine voice that, imprisoned in the scene of a garden, speaks in the poems. the textual analysis shows the mechanisms of fantasies of self-destruction and the study of fear as essential elements of a poetry that expresses the experience of a body that does not want to die.
Negativo e ornamental: um poema de Carlito Azevedo em seus problemas
Simon, Iumna Maria;Dantas, Vinicius;
Novos Estudos - CEBRAP , 2011, DOI: 10.1590/S0101-33002011000300006
Abstract: the article considers the compositional strategies from a poem by carlito azevedo, "na noite física" [in the physical night] (1996), that takes its lead from and incorporates an untitled poem by charles (1985). the transformations reveal the intertextual play of a contemporary poet, in which the textual erotization covers up, so to speak, its subject, leaving implicit its violent character. the article then discusses the position of the subject resulting from the dissolution of the referent, especially the aesthetization that follows from a verbal spectacle made with the anti-illusionist elements of modern poetry.
Estudo comparativo da eficiência da difenilcarbazida e do óleo de coco saponificado microemulsionados na inibi??o da corros?o de a?o carbono
Rossi, Cátia G. F. T.;Scatena Jr,lio;Maciel, Maria Aparecida M.;Dantas, Tereza N. C.;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000500014
Abstract: the effectiveness of microemulsions (me) of saponified coconut oil (ocs-me) and diphenylcarbazide (dc-me) on a carbon steel corrosion inhibition process was evaluated using an electrochemical method of polarization resistance. the me was prepared with ocs, butanol, kerosene and saline solutions. ocs-me and dc-me showed highest inhibitions effects (77% and 92%, respectively) at lower concentrations (0.5% and 0.48 - 0.50%, respectively). the surfactant ocs (in h2o) showed lower efficiency (63% at 0.20 - 0.25% concentration). the greatest inhibitory effect of dc-me could be correlated with the chemical structure and the rich o/w me system, which are very important for adsorption phenomena in interfacial me systems.
Influência da freqüência de alongamento utilizando facilita??o neuromuscular proprioceptiva na flexibilidade dos músculos isquiotibiais
Gama, Zenewton André da Silva;Medeiros, Carlos Alexandre de Souza;Dantas, Alexandre Vinícyus Ribeiro;Souza, Túlio Oliveira de;
Revista Brasileira de Medicina do Esporte , 2007, DOI: 10.1590/S1517-86922007000100008
Abstract: stretching techniques are one of the most used devices in rehabilitation practice. however, some parameters such as frequency have not been studied when proprioceptive neuromuscular facilitation (pnf) techniques are used. the purpose of this study was to analyze in the short and middle-terms the optimal frequency to increase hamstring muscle flexibility, measured by knee extension range of motion (rom). thirty-six female subjects were selected, (mean (sd) age 21.7 (1.9) years) with limited hamstring muscle flexibility. the subjects were randomly assigned to four groups (n = 9). the three stretching groups received the intervention five days a week for two consecutive weeks. the three pnf stretching groups alternated concerning frequency with one, three, and six maneuvers per session. analysis of variance (anova) was used for the first and final measures (< 0.05). a post hoc analysis using the tukey test (< 0.05) was performed. data indicated that the pnf stretching groups had a statistically significant rom gain in relation to the control group, but not among themselves. concerning gain velocity, the groups that used three and six maneuvers had faster stretching gains (p < 0.05) than the one that used only one maneuver. the results showed that there was no difference in relation to delayed gains when one, three or six stretching maneuvers were used with the hold-relax technique on hamstring muscles.
Produ??o e qualidade de mel?o amarelo influenciado por coberturas do solo e laminas de irriga??o no período chuvoso
Camara, Maria José T?rres;Negreiros, Maria Zuleide de;Medeiros, José Francismar de;Bezerra Neto, Francisco;Barros Júnior, Aurélio Paes;
Ciência Rural , 2007, DOI: 10.1590/S0103-84782007000100010
Abstract: growing a melon crop during the rainfall period has been a great challenge for producers from the north eastern brazil due to crop sanitary problems. this work was aimed at evaluating the effects of soil coverages and irrigation depth on yield and quality of yellow melon (hybrid goldex) during the rainfall period. the experiment was carried out at fazenda santa júlia agro-comercial exportadora de frutos tropicais ltda, mossoró-rn, northeastern brazil, during the period of april to july 2003. the experimental design was a randomized complete blocks with four replications. the treatments were the combinations of five soil coverages (soil with no coverage and coverages with polyethylene films - black, silvery, yellow, and brown) with three irrigation depth (100%, 86% and 72% of the standard lamina, this equivalent to 238.44mm). the traits evaluated were number, mean weight and yield of marketable (internal and external markets), refuse and total fruits, pulp firmness and thickness, fruit shape index, and soluble solids content. interaction between soil coverage types and irrigation depth was significant with regard to total fruit yield. the greatest marketable fruit yields and soluble solids contents were obtained with the use of polyethylene soil coverages. the numbers of marketable, refuse and total fruits, as well as the yields of marketable and refuse fruits were not significantly affected by the irrigation depth.
Perfil eletroforético e concentra??o de imunoglobulinas G (IgG) do soro sanguíneo de cabras Saanen com mastite experimental induzida por Staphylococcus aureus suplementadas com vitamina E
Fonteque, Joandes H.;Kohayagawa, Aguemi;Mattoso, Cláudio R.S.;Lopes, S?nia T.A.;Paes, Paulo R.O.;Cassetari, Maria Luiza;Langoni,lio;
Pesquisa Veterinária Brasileira , 2010, DOI: 10.1590/S0100-736X2010000100013
Abstract: the objective was to evaluate the electrophoretic profile of proteins and serum concentration of immunoglobulin g (igg) in saanen goats with mastitis experimentally induced by staphylococcus aureus (dl-α-tocopherol acetated). 14 adult goats, (supplemented with vitamin e dl-α-tocopherol) primiparous pregnant, seronegative for caprine arthritis encephalitis (caev), clinically healthy, were divided into two groups of seven animals: not supplemented group (g1) and group supplemented with 2.000 ui of dl-α-tocopherol (g2 vit e), by intramuscular injection on the day of the parturition and seven days later. at the 9th day after delivery 300 ufcs of the s. aureus atcc 225923 strain were inoculated into the left half of the mammary gland of each animal. the mastitis was determined through collection of milk samples for evidence of infection by means of bacteriological examination, somatic cell count (scc) and california mastitis test (cmt). then samples were collected after 12, 24, 48 and 72 hours, antimicrobial intra-mammary gland treatment was initiated, with new evaluation 48 hours after treatment. the electrophoretic profile of serum protein of the goats, showed five fractions, as follows: albumin and globulin (α, β1, β2 e γ-globulin). there was an increase in the production of γ-globulin and lower production of β2-globulin fraction 12 hours after infection, and faster decrease in the supplemented group, showing the influence of vitamin e in the production of acute phase proteins. there was no influence of vitamin e in the serum concentration of immunoglobulin g (igg) in supplemented animals. the supplementation with vitamin e increased the concentration of immunoglobulin and decreased the production of acute phase proteins, probably the antioxidant effect minimizing the tissue injury during the inflammatory process in the mammary gland.
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