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Search Results: 1 - 10 of 420581 matches for " Carina Seixas M.;Alves "
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Resposta do quiabeiro às doses de fósforo aplicadas em solo arenoso
Oliveira, Ademar P. de;Dornelas, Carina Seixas M.;Alves, Adriana U.;Alves, Anarlete U.;Silva, Jandiê Araújo da;Oliveira, Arnaldo Nonato P. de;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000200010
Abstract: the influence of phosphorus fertilization on yield of okra, cv. santa cruz was evaluated. the research was carried out in the experimental design of randomized blocks, with five treatments (0; 44; 88; 132 and 176 kg ha-1 of p), and four replications. the maximum number of fruits per plant (43) was obtained with the maximum level of 176 kg ha-1 of p. the estimated maximum yield of commercial fruits (38.6 t ha-1), was related to 139 kg ha-1 of p. the application of 137 kg ha-1 of p provided the highest economical income, yielding 38.3 t ha-1 of commercial fruits, with an increment of fruits of 17.4 t ha-1. the most economic level represented 98% of that responsible for the maximum yield, indicating that the okra responded economically to the use of p in sandy soil and, of the p level responsible for the maximum commercial yield of fruits were related to 40 mg dm-3 of available p in soil (mehlich 1), and the level responsible for the highest economic income was related to 38 mg dm-3.
Rendimento de feij?o-vagem em fun??o de doses de K2O
Oliveira, Ademar Pereira de;Silva, Jandiê Araújo;Alves, Adriana Ursulina;Dorneles, Carina Seixas M;Alves, Anarlete Ursulino;Oliveira, Arnaldo Nonato P. de;Cardoso, Edson A.;Cruz, Iordam da Silva;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000100007
Abstract: aiming to evaluate the effect of k2o levels on the increase of snap bean yield, an experiment was performed in paraíba state, brazil, in a quartz psamment soil. the experimental design was of randomized blocks, with six treatments (0; 50; 100; 150; 200 and 250 kg ha-1 of k2o), in four replications. each plot contained 40 plants spaced 1.0 m x 0.2 m. pods maximum number/plant (20 pods) and the maximum yield/plant (171 g), were obtained, respectively with 145 and 173 kg ha-1 of k2o, and pods yield reached maximum value around 25,3 t ha-1 at the level of 171 kg ha-1 of k2o. the most economic level of k2o for the production of pods was of 165 kg ha-1. the most economic level represented 96% comparing to that responsible for maximum pods production. the k2o levels that obtained maximum pods production and economic return were correlated, respectively, with 181 and 176 mg dm-3 of k available for the extractor mehlich 1.
Supera??o da dormência em sementes de Bauhinia divaricata L.
Alves, Adriana Ursulino;Dornelas, Carina Seixas Maia;Bruno, Riselane de Lucena Alcantara;Andrade, Leonaldo Alves de;Alves, Edna Ursulino;
Acta Botanica Brasilica , 2004, DOI: 10.1590/S0102-33062004000400018
Abstract: this study was carried out with the aim of determining the most efficient methodology to overcome dormancy in bauhinia divaricata seeds. the 12 treatments employed were: control - intact seeds (t1); mechanical scarification with sandpaper (t2); coating cutting in the opposite side of micropylar region (t3); immersion in water and at room temperature during 24 hours (t4); immersion in water (50, 60 and 70oc) during three minutes (t5, t6 and t7, respectively); immersion in hot water (80oc) during three, six and nine minutes (t8, t9, and t10, respectively); and immersion in boiling water during one and two minutes (t11 and t12, respectively). effects were evaluated considering emergency and vigor tests (first count, speed mean time to emergency, length and dry mass of seedlings and relative frequency emergency). the experiment was installed in greenhouse and sown was done in plastic trays containing sand. the experimental design used was a completely randomized with four replicates of 25 seeds and the averages were compared through the tukey test, at 5% probability. the were significant differences among the treatments for all variables. the most probable cause for the dormancy is the impermeability of the seed coating and the most efficient treatment to overcome were coating cutting in the opposite side of micropylar region.
Caracteriza??o morfológica de frutos e sementes e desenvolvimento pós-seminal de Tamarindus indica L. - Leguminosae: caesalpinioideae
Sousa, Danielle Marie Macedo;Bruno, Riselane de Lucena Alcantara;Dornelas, Carina Seixas Maia;Alves, Edna Ursulino;Andrade, Albericio Pereira de;Nascimento, Luciana Cordeiro do;
Revista árvore , 2010, DOI: 10.1590/S0100-67622010000600006
Abstract: tamarind (tamarindus indica l.) is a fruit tree native of tropical africa, belonging to the leguminosae family and nowadays is spread along tropical regions of the world. fruit and seed morphologic characterization is important for species identification and has been used in studies on seed germination and vigor. the main aim of this research work was to describe fruit, seed and seedlings morphology as well as characterizing its germination process. fruit traits analyzed were type, color, dimensions, texture and consistency of pericarp, dehiscence and number of seeds for fruit. on the other hand, seed traits were scored as to color, dimensions, texture and consistency of the teguments, shape, edges, position of hilum and other structures and embryo characteristics. seedlings were recorded when protophylls development had already been complete. radicle, collect, hypocotyl, cotyledons, epicotyl and protophyll have been described and illustrated. t. indica presents an indehiscent fruit with dimensions around 7.3 and 9.2cm and containing 1-11 seeds. the embryonic axle is axial and invagined and is inserted into cotyledons. seed germination is an epigeal-type and seedlings present protophyll composites with 6 and 9 pairs of opposing and glabrous and small leaflets.
Profundidades de semeadura para emergência de plantulas de juazeiro
Alves, Edna Ursulino;Bruno, Riselane de Lucena Alcantara;Alves, Anarlete Ursulino;Alves, Adriana Ursulino;Cardoso, Edson de Almeida;Dornelas, Carina Seixas Maia;Galindo, Evio Alves;Braga Júnior, Joel Martins;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000400042
Abstract: zizyphus joazeiro mart. is a typical brazilian tree of the northeastern dry lands, being endemic to the caatinga. it occurs in various states of northeast brazil and provides a great economic potential and importance for this semi-arid region. this study had as objective to determine the best sowing depth of zizyphus joazeiro. in greenhouse sand substratum, with 4 replications of 25 units of dispersion each one, in the following depths (one, too, tree, four and five centimeters). it was ended that the sowing of juazeiro in nursery should be done in the depth of 1.0 to 1.6cm. the depth of 1 cm resulted in smaller time for the total germination.
Produ??o de feij?o-fava em fun??o do uso de doses de fósforo
Oliveira, Ademar P. de;Alves, Edna U.;Alves, Adriana U.;Dornelas, Carina S.M.;Silva, Jandiê A. da;P?rto, M?nica L.;ALves, Amarlete V.;
Horticultura Brasileira , 2004, DOI: 10.1590/S0102-05362004000300008
Abstract: phosphorus is an important mineral nutrient for vegetables. this work was conducted at universidade federal da paraíba, in areia, brazil, from december/2001 to july/2002, aiming to evaluate the effect of levels of p2o5 on the yield of lima bean, cv. "orelha de vó". the experimental design was a randomized block with five treatments (0; 100; 200; 300; 400 and 500 kg ha-1 of p2 o5), and four replications. each plot consisted of 40 plants spaced 1.0 m between rows and 0.50 m between plants in each row. the estimated maximum yield of green and dry beans (5.2 and 2.7 t ha-1, respectively) corresponded, to the dosages of 309 and 302 kg ha-1 of p2o5. the levels 291 kg ha-1 and 281 kg ha-1 of p2o5 provided, respectively, the greater economic return for the yield of green (4.1 t ha-1) and dry (1.8 t ha-1) beans. the most economic levels included more than 80% of those dosages responsible for the maximum yields and indicated the economic viability of phosphorus utilization on lima bean crop. the p2o5 levels which promoted the maximum yield and the maximum economic return for green and dry beans yield were respectively, with 57.1; 56.3; 55.0 and 53.8 mg dm-3 of available p for the extractor of melich 1. the lima bean response to the phosphorus fertilization in soils with similar fertility used in the present study, for green and dry beans yield, will be reduced at levels of available p superior to 55.0 and 53.8 mg dm-3. the average concentration of p in the leaves of lima bean, 120 days after sowing, in function of levels of p2o5 was of 3.4 g kg-1. for the soil of this study the application of 291 and 281 kg ha-1 of p2o5 is more recommended to establish the lima bean respectively, for green and dry beans yield.
Platelet-rich plasma in bone repair of irradiated tibiae of Wistar rats
Gumieiro, Emne Hammoud;Abrah?o, Márcio;Jahn, Ricardo Schmitutz;Segretto, Helena;Alves, Maria Tereza de Seixas;Nannmark, Ulf;Granstr?m, G?sta;Dib, Luciano Lauria;
Acta Cirurgica Brasileira , 2010, DOI: 10.1590/S0102-86502010000300007
Abstract: purpose: to evaluate the influence of prp addition on bone repair of circular defects created in irradiated tibiae of rats by histometric analysis. methods: sixty male wistar rats had the right tibiae irradiated with 30 gy. after 30 days monocortical defects were created and platelet-rich plasma was applied in 30 rats. in the control group defects were created but not filled. the animals were desanguinated after 4, 7, 14, 21, 56 and 84 days and the tibiae removed for histological processing. results: there was a tendency in the prp group to increased bone neoformation from 14-days to 84-days; in the control group increased bone neoformation was not seen after 21 days or later. conclusion: the addition of platelet-rich plasma had a beneficial effect in the initial cellular regeneration period and enhanced bone formation in later periods when compared to control.
Eritema nodoso como forma de reativa??o da doen?a de Chagas em transplantado cardíaco
d'ávila, Solange Corrêa Garcia Pires;d'ávila, Ant?nio Miguel Morena Pires;Pagliari, Carla;Gon?alves, Ver?nica M.;Duarte, Maria Irma Seixas;
Revista da Sociedade Brasileira de Medicina Tropical , 2005, DOI: 10.1590/S0037-86822005000100013
Abstract: we report a patient with chagas' disease that presented trypanosoma cruzi reactivation after cardiac transplantation and immunodepression, characterized by skin lesions of erythema nodosum. this is an unusual presentation of chagas' disease.
NLRP3 Controls Trypanosoma cruzi Infection through a Caspase-1-Dependent IL-1R-Independent NO Production
Virginia M. Gon?alves,Kely C. Matteucci,Carina L. Buzzo,Bruna H. Miollo,Danny Ferrante,Ana C. Torrecilhas,Mauricio M. Rodrigues,Jose M. Alvarez,Karina R. Bortoluci
PLOS Neglected Tropical Diseases , 2013, DOI: 10.1371/journal.pntd.0002469
Abstract: Trypanosoma cruzi (T. cruzi) is an intracellular protozoan parasite and the etiological agent of Chagas disease, a chronic infectious illness that affects millions of people worldwide. Although the role of TLR and Nod1 in the control of T. cruzi infection is well-established, the involvement of inflammasomes remains to be elucidated. Herein, we demonstrate for the first time that T. cruzi infection induces IL-1β production in an NLRP3- and caspase-1-dependent manner. Cathepsin B appears to be required for NLRP3 activation in response to infection with T. cruzi, as pharmacological inhibition of cathepsin B abrogates IL-1β secretion. NLRP3?/? and caspase1?/? mice exhibited high numbers of T. cruzi parasites, with a magnitude of peak parasitemia comparable to MyD88?/? and iNOS?/? mice (which are susceptible models for T. cruzi infection), indicating the involvement of NLRP3 inflammasome in the control of the acute phase of T. cruzi infection. Although the inflammatory cytokines IL-6 and IFN-γ were found in spleen cells from NLRP3?/? and caspase1?/? mice infected with T. cruzi, these mice exhibited severe defects in nitric oxide (NO) production and an impairment in macrophage-mediated parasite killing. Interestingly, neutralization of IL-1β and IL-18, and IL-1R genetic deficiency demonstrate that these cytokines have a minor effect on NO secretion and the capacity of macrophages to control T. cruzi infection. In contrast, inhibition of caspase-1 with z-YVAD-fmk abrogated NO production by WT and MyD88?/? macrophages and rendered them as susceptible to T. cruzi infection as NLRP3?/? and caspase-1?/? macrophages. Taken together, our results demonstrate a role for the NLRP3 inflammasome in the control of T. cruzi infection and identify NLRP3-mediated, caspase-1-dependent and IL-1R-independent NO production as a novel effector mechanism for these innate receptors.
Produtividade da batata-doce em fun??o de doses de K2O em solo arenoso
Brito, Carlos Henrique de;Oliveira, Ademar P de;Alves, Adriana Ursulino;Dorneles, Carina S M;Santos, Jo?o F dos;Nóbrega, José P R;
Horticultura Brasileira , 2006, DOI: 10.1590/S0102-05362006000300010
Abstract: the response of sweet potato rainha branca cv., cultivated under different k2o levels was evaluated. the experiment was carried out in randomized blocks design with four replications in a quartz psamment soil at universidade federal da paraíba, paraiba state, brazil, from july to november/2004. the k2o levels applied were 0; 50; 100; 150; 200 and 250 kg ha-1). the plots consisted of 48 plants, spaced of 0.80x0.30 m. the maximum estimated values, 14.8 and 8.4 t ha-1 of total and commercial roots yield, were obtained with 194 and 174 kg ha-1 of k2o, respectively. however, the most economic level of commercial roots yield (6.0 t ha-1) was reached using 163 kg ha-1 of k2o. the k2o levels resulting in maximum roots yield and economic return, were correlated respectively with 125 and 121 mg dm-3 of available k with mehlich 1 extractor. the probability for sweet potato response under potassic fertilization in similar soils will be minimized if the level of available k in the soil were superior to 121 mg dm-3. for utilized soil in this study, 163 kg ha-1 of k2o can be recommended for sweet potato fertilization.
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