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Search Results: 1 - 10 of 19024 matches for " Paulo Moutinho "
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Influências de Atta spp. (Hymenoptera: Formicidae) na recupera??o da vegeta??o pós-fogo em floresta de transi??o amaz?nica
Carvalho, Karine Santana;Balch, Jennifer;Moutinho, Paulo;
Acta Amazonica , 2012, DOI: 10.1590/S0044-59672012000100010
Abstract: in this study we investigated the role of leaf-cutting ants in the post-fire vegetation recovery. we hypothesized that a forest plot submitted to annual fire presents: (1) higher abundance of leaf-cutting ant nests; (2) higher removal of seeds; and (3) higher herbivory rates of leaf-cutting ants, when compared to the forest plots without fire (control). the leaf-cutting ant nests were sampled, mapped, and checked up (after 17 months) to register their activity and new colonies emerging from the plot. we made comparative experiments of seeds removal and seedlings herbivory in two 50 ha plots, one submitted to annual fire and another without fire. the abundance of leaf-cutting nests was higher in the plot submitted to fire than in the control plot. the species found were: atta cephalotes, a. laevigata, and a. sexdens, being the latter the most abundant and the one that showed an increase of active colonies after 17 months. the plot submitted to fire showed a higher abundance of seeds removed by leaf-cutting ants than the control. while more than two leaves were ripped per seedling in the plot under fire, less than one was registered in the control plot. it was also observed that the average abundance of seedlings attacked by leaf-cutting ant in the fire plot was higher than in the plot without fire. this study shows that the leaf-cutting ants may reduce seed germination and seedling recruitment, affecting the reproductive success and the composition of vegetation recovering from fire. alternatively, the leaf-cutting ants may also speed up the regeneration process of unpalatable plant species. in this sense, we may conclude that the presence of leaf-cutting may interfere in the species composition of post fire forest.
Population dynamics, structure and behavior of Anopheles darlingi in a rural settlement in the Amazon rainforest of Acre, Brazil
Paulo Moutinho, Luis Gil, Rafael Cruz, Paulo Ribolla
Malaria Journal , 2011, DOI: 10.1186/1475-2875-10-174
Abstract: The study area, known as Ramal do Granada, is a rural settlement inside the Amazon basin in the state of Acre. Population variations and density have been analysed by species behaviour, and molecular analysis has been measured by ND4 mitochondrial gene sequencing.The results show higher density in collections near a recent settlement, suggesting that a high level of colonization decreases the vector presence. The biting activity showed higher activity at twilight and major numbers of mosquitos in the remaining hours of the night in months of high density. From a sample of 110 individual mosquitoes, 18 different haplotypes were presented with a diversity index of 0.895, which is higher than that found in other Anopheles studies.An. darlingi depends on forested regions for their larval and adult survival. In months with higher population density, the presence of mosquitoes persisted in the second part of the night, increasing the vector capacity of the species. Despite the intra-population variation in the transition to rainy season, the seasonal distribution of haplotypes shows no change in the structure population of An. darlingi.Malaria is one of the most important tropical diseases in the world. WHO data report a total of 106 malaria-endemic countries and 151 million estimated cases in 2009 [1]. In South America, there are a high number of disease notifications in Brazil, Colombia, Peru, Venezuela, Suriname and Bolivia. These countries have large tracts of Amazon rainforest, South American biome and habitats for many Anopheles species that have high potential to be malaria vectors [2,3].Brazil has the largest number of malaria cases and malaria-related deaths in the Americas, and 15% of its population lives in at-risk areas, which are concentrated in the states of the Amazon Basin, with an average of 500 thousand notifications per year [4]. The strategies and targets for malaria control include diagnosis, disease treatment and prevention by mosquito control. There
Leafcutter Ant Nests Inhibit Low-Intensity Fire Spread in the Understory of Transitional Forests at the Amazon's Forest-Savanna Boundary
Karine S. Carvalho,Ane Alencar,Jennifer Balch,Paulo Moutinho
Psyche , 2012, DOI: 10.1155/2012/780713
Abstract: Leaf-cutter ants (Atta spp.) remove leaf litter and woody debris—potential fuels—in and around their nests and foraging trails. We conducted single and three annual experimental fires to determine the effects of this leaf-cutter ant activity on the behavior of low-intensity, slow-moving fires. In a transitional forest, where the southern Amazon forest meets the Brazilian savanna, we tested whether leaf-cutter ant nests and trails (i) inhibit fire spread due to a lack of fuels, and (ii), thereby, reduce the total burned area during these experimental low-intensity fires, particularly at forest edges where leaf-cutter ant abundance was higher. Fine-medium fuel mass increased with an increase in distance from ant nest, and the mean area of bare soil was greater on nests than on the forest floor. Between 60 to 90 percent of the unburned area was within 30 m of ant nests, and burned area significantly increased with increasing distance to ant nests. In addition, the number of ant nests declined with increasing distance from the forest edge, and, with exception of the first experimental fire, burned area also increased with increasing distance from the edge. The present study provides new insight to fire ecology in Amazon environments.
Factors Affecting the Abundance of Leaf-Litter Arthropods in Unburned and Thrice-Burned Seasonally-Dry Amazonian Forests
Juliana M. Silveira,Jos Barlow,Julio Louzada,Paulo Moutinho
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0012877
Abstract: Fire is frequently used as a land management tool for cattle ranching and annual crops in the Amazon. However, these maintenance fires often escape into surrounding forests, with potentially severe impacts for forest biodiversity. We examined the effect of experimental fires on leaf-litter arthropod abundance in a seasonally-dry forest in the Brazilian Amazon. The study plots (50 ha each) included a thrice-burned forest and an unburned control forest. Pitfall-trap samples were collected at 160 randomly selected points in both plots, with sampling stratified across four intra-annual replicates across the dry and wet seasons, corresponding to 6, 8, 10 and 12 months after the most recent fire. Arthropods were identified to the level of order (separating Formicidae). In order to better understand the processes that determine arthropod abundance in thrice-burned forests, we measured canopy openness, understory density and litter depth. All arthropod taxa were significantly affected by fire and season. In addition, the interactions between burn treatment and season were highly significant for all taxa but Isoptera. The burned plot was characterized by a more open canopy, lower understory density and shallower litter depth. Hierarchical partitioning revealed that canopy openness was the most important factor explaining arthropod order abundances in the thrice-burned plot, whereas all three environmental variables were significant in the unburned control plot. These results reveal the marked impact of recurrent wildfires and seasonality on litter arthropods in this transitional forest, and demonstrate the overwhelming importance of canopy-openness in driving post-fire arthropod abundance.
Adverse effects of growth hormone replacement therapy in children
Souza, Flavio Moutinho;Collett-Solberg, Paulo Ferrez;
Arquivos Brasileiros de Endocrinologia & Metabologia , 2011, DOI: 10.1590/S0004-27302011000800009
Abstract: human growth hormone (hgh) replacement therapy has been widely available for clinical purposes for more than fifty years. starting in 1958, hgh was obtained from cadaveric pituitaries, but in 1985 the association between hgh therapy and creutzfeldt-jakob disease was reported. in the same year, the use of recombinant hgh (rhgh) was approved. side effects of rhgh replacement therapy in children and adolescents include rash and pain at injection site, transient fever, prepubertal gynecomastia, arthralgia, edema, benign intracranial hypertension, insulin resistance, progression of scoliosis, and slipped capital femoral epiphysis. since gh stimulates cell multiplication, development of neoplasms is a concern. we will review the side effects reported in all rhgh indications.
Liber: alternativa para publica??o eletr?nica
Moutinho, Karina;Cunha Filho, Paulo C.;Lima, Alessandra Marques de;,;
Ciência da Informa??o , 2002, DOI: 10.1590/S0100-19652002000200009
Abstract: this paper aims the discussion of the characteristics of eletronic publishing by identifying changes provided by electronic support - from composition to publication - on the relationship between authors and readers. it also presents liber, a project developed by virtus - ufpe's hypermidia laboratory, standing out its main characteristics and its contributions in the field of the eletronic publishing.
Análise comparativa entre o jogador libero e os recebedores prioritários na organiza??o ofensiva, a partir da recep??o ao servi?o, em voleibol
Jo?o,Paulo Vicente; Mesquita,Isabel; Sampaio,Jaime; Moutinho,Carlos;
Revista Portuguesa de Ciências do Desporto , 2006,
Abstract: in the last few years volleyball game rules has been changing, causing the emergence of new functions by specific players, as libero. the aim of the present study is to characterize the actions of the libero and priority receivers on the reception and the association with the attack effectiveness. 12 matches performed by 4 teams integrated in the c group of volleyball word league 2001 have been analyzed, corresponding to 79 sets, of which emerged 2099 reception actions. the evaluation instrument used was the sos-vgs system adapted (moutinho, 1993), which considers reception? effectiveness and attack? effectiveness. a descriptive and frequency analysis of the results has been performed. to determine the degree of the association between variables and the comparison between groups a pearson chi-square ( c2) was used, with a significant value of 5%. observer?s reliability has been held and revealed minimum intra and inter-observer?s values respectively of 93,4% and 91,8% for the reception quality, and 93,4% and 91,1% for attack? effectiveness. the results obtained, allowed us to infer that the reception quality was higher on the libero intervention, comparatively with priority receivers? players. when the association between attack effectiveness and libero or priority receivers? interventions was taken into account our results differ among the teams. the portuguese team had the most positive libero player performance comparatively to priority receivers? players, followed by cuba and japan teams, and no significant differences between those two players performance were found in the yugoslavia team. this study enhances the influence of the reception in the attack effectiveness, alerting for the advantages of using a specialist in these actions, like libero player, on the top level volleyball male teams.
Coopera??o institucional como estratégia inovativa: o caso do APL de confec??es em Campina Grande (PB)
Cavalcanti Filho, Paulo Fernando de M. B.;Moutinho, Lúcia Maria Góes;
Revista de Economia Contemporanea , 2007, DOI: 10.1590/S1415-98482007000300004
Abstract: in this research is developed the study of local productive arrange (lpa) of sewing at campina grande, in paraiba. is followed a line of investigation of industrial development and innovative economy and knowledge, focusing in learning actions, upgrading and cooperation relation between all lpa's participants. is concluded that innovative performance is better improved by using an innovative strategy of technological development, as explained by an analyses of alliance created around the natural colored cotton.
Profile of users of homeopathic remedies in Santos county (SP). Perfil de los usuarios de medicamentos homeop ticos en el municipio de Santos (SP). Perfil dos usu rios de medicamentos homeop ticos do munic -pio de Santos (SP).
Suelen Fernanda Parames,Claudia Alves Vieira Mulero,Paulo Angelo Lorandi,Caroline dos Santos Moutinho Rodrigues
International Journal of High Dilution Research , 2007,
Abstract: The present work aims to analyze the profile of the users of Homeopathy in two pharmacies of the city of Santos (SP). A closed questionnaire was applied to 102 users during the month of January of 2007. It was found that the Homeopathy user uses other therapeutic resources concomitantly, mainly the conventional treatment (59,7%).The safety of the homeopathic treatment was invoked as the main motivation for its use (33,1%). The user rarely seeks the pharmacist’s advice, and when he/she does it is to ask orientations for self-medication.It is presented a short analysis of the emergency of pharmaceutical care in Brazil and the world and of the importance of systematization in the homeopathic specialized services.
Os odontoideum: case report Os odontoideum: reporte de caso Os odontoideum: relato de caso
André Rodrigues Pinho,Vitorino Veludo Moutinho,Nuno Paulo Alegrete Silva,António Francisco Martingo Serdoura
Coluna/Columna , 2012,
Abstract: OBJECTIVE: To report the difficulties in managing a case of os odontoideum. METHODS: Female patient, 12 years old who developed a quadiparesis after minor cervical trauma in October 2005. In the emergency department a congenital cervical anomaly was identified. The patient was placed in a Stryker frame and, few days later, in a halo bracing. After 3 months, an infection around the pins emerged and the halo vest had to be removed. A severe C1-2 instability persisted and a C1-C2 Gallie procedure was attempted. In the following weeks the bone disappeared and another procedure was attempted in June 2006 - C1 laminectomy and occiput-C3 fusion. In the following months the neurological status of the patient improved and a complete mass of occiput-C3 fusion was observed. RESULTS: We choose a posterior cervical arthrodesis of C1-C2 using the Gallie technique. Since the condition was not resolved we performed a second surgery, C1 laminectomy (determined by SAC of 8, 3 mm in MRI) followed by posterior occiput-C3 fusion. In our case, until now, there is no evidence of axial decompensation, but a more prolonged follow-up is needed. CONCLUSIONS: The treatment of os odontoideum has many considerations but the essential that in the presence of instability and neurological deficit a solid fusion is achieved. In case of failure of posterior atlantoaxial wiring, the occiput-C2 or C3 fusion with rods seems to be an excellent option with a high rate of success, avoiding the need for additional support. OBJETIVO: Informe sobre las dificultades para tratar un caso de os odontoideum. MéTODOS: Paciente, una adolescente, de 12 a os de edad, que desarrolló una cuadriparesia después de un traumatismo cervical leve en octubre de 2005. En el Departamento de Primeros Auxilios, se identificó una anomalía cervical congénita. La paciente fue colocada en un marco de Stryker , unos días después, en un braguero de halo. Cuando transcurrieron 3 meses, surgió una infección alrededor de los pernos y se tuvo que retirar el chaleco de halo. Persistió una grave inestabilidad C1-2 y se intentó un procedimiento de Gallie C1-C2. En las semanas siguientes, el alambre desapareció y, en junio de 2006, se intentó otro procedimiento - laminectomía C1 y fusión de occipucio-C3. En los meses siguientes, el estado neurológico de la paciente mejoró y se observó una masa completa de fusión occipucio-C3. RESULTADOS: Elegimos una artrodesis cervical posterior de C1-C2 usando la técnica de Gallie. Como la condición no se solucionó, realizamos una segunda cirugía, laminectomía C1 (determinada por SAC de 8, 3 mm e
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