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Search Results: 1 - 10 of 337608 matches for " Fábio Gon?alves de;Silva "
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Aquatic Phoretic Mites (Acari: Hydrachnidia) Associated with Ectoparasitism of Mosquitoes (Diptera: Culicidae) in the Midwest Region of Brazil  [PDF]
Fábio Alexandre Leal dos Santos, Sirlei Frank Thies, Aldimara Vaillant Gonalves, Klaucia Rodrigues Vasconcelos, Monaly da Silva Ribeiro, Junio de Souza Damasceno, Elisangela Santana de Oliveira Dantas, Diniz Pereira Leite Júnior
Advances in Entomology (AE) , 2016, DOI: 10.4236/ae.2016.43015
Abstract: Water mites (Hydrachnidia) are common external parasites of the medically important mosquitoes (Culicidae). Between April 2014 and April 2015, 64 mites from three genus, Arrenurus 71.9%, Limnochares 3.1%, and Hydrachna 25.0%, were collected from female mosquitoes in two rural locations near Cuiabá, Mato Grosso, Brazil. Dipterous species parasitized by water mites belonging to seven species: Anopheles (Nys.) darling, An. evansae, Aedes (Och.) scapularis, Ae. serratus, Mansonia (Man.) wilsoni, Psorophora (Jan.) ferox, Ps. varipes. The most common specimens to accommodate the water mites were Anopheles (Nys.) darlingi and Psorophora (Jan.) varipes. The prevalence of parasitism of mosquitoes by water mites found in this study was less than 5. However, few studies have addressed the ecological role of mites and their biotopes, as well as host-parasite interactions in Brazil.
Biotechnological Potential of Endophytic Bacteria to Improve the Micropropagated Seedling of Variety RB92579 Sugarcane (Saccharum officinarum L.)  [PDF]
Maria do Carmo Silva Barreto, Márcia do Vale Barreto Figueiredo, Márcia Vanusa da Silva, Arnóbio Gonalves de Andrade, José de Paula de Oliveira, Clébia Maria Alves Almeida, Livia Caroline Alexandre de Araújo, Odemar Vicente dos Reis Junior, Manoel Urbano Ferreira Junior, Antonio Félix da Costa, Vera Lucia de Menezes Lima
Advances in Microbiology (AiM) , 2018, DOI: 10.4236/aim.2018.811057
Abstract: Endophytic bacteria may influence agricultural production in several ways, including promoting plant growth. Two experiments were conducted in order to evaluate the combination of endophytic bacteria from the Brazilian Northeast region aims at the commercial introduction of the inoculation of these bacteria in micropropagated sugarcane plants using a temporary immersion bioreactor. One experiment was done in tubes with sterile commercial substrate, and the other was done in pots with soil; both were installed in a greenhouse. A mixed inoculation was performed in six inoculated endophytic diazotrophic bacteria in micropropagated sugarcane plants, variety RB92579. In the experiment with soil, the mixed inoculation significantly increased the shoot dry matter of plants without the addition of nitrogen fertilizer. However, the accumulation of total-N in the tissues showed no significant differences between treatments with and without nitrogen fertilization. The evaluation of micropropagated seedlings showed no increases in the parameters tested. The results showed that the response of inoculation in temporary immersion bioreactor micropropagation is possible, and that the application of homologous strains may have contributed to a better response by the interaction of endophytic bacteria with sugarcane RB92579. Further studies should be conducted to improve the methodology, which indicates a great potential to optimize this process on a commercial scale.
Controle químico da brusone em arroz de terras altas: efeitos nos fungos n?o alvos do filoplano
Gonalves, Fábio José;Araújo, Leila Garcês de;Silva, Gisele Barata da;Filippi, Marta Cristina Corsi de;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000100011
Abstract: upland rice blast significantly affects yield, requiring one or two fungicides applications to control it. however, the effect of fungicides on beneficial fungi and on fungi not targeted by rice phylloplane are unknown. this study aimed to evaluate the effect of fungicides on panicle blast control, on fungi not targeted by rice phylloplane, and to study the antibiosis of fungi not targeted by m. oryzae. a field experiment was conducted by using two cultivars (primavera and bonan?a), four fungicides (trifloxistrobina + propiconazol, azoxistrobina, tebuconazol, and triciclazol) and a control, with a randomized blocks design, in a split-plot scheme, and four replications. the panicle blast severity, leaf chlorophyll content, number of colony-forming units cm-2 of leaf area, and antibiosis were assessed. the primavera cultivar showed higher panicle blast severity than bonan?a. the fungicides azoxistrobina and trifloxistrobina + propiconazol significantly differed from the control, showing the lowest panicle blast severities. the fungicides did not affect the chlorophyll content, but differences were noticed between the cultivars. the fungicides tebuconazol, trifloxistrobina + propiconazol, and azoxistrobina significantly reduced the phylloplane fungi, concerning the control. the triciclazol did not differ from the control, showing the highest number of colony-forming units cm-2 of leaf area. among the four fungi tested, only epicoccum sp. showed antagonism to m. oryzae.
Pseudo-aneurisma arterial pós-transplante renal
Silva, Luís Felipe da;Marinho, Ana Cristina de Oliveira;Gonalves, Renato Torres;Ferreira, Fábio Bellizzi;
Revista do Colégio Brasileiro de Cirurgi?es , 2006, DOI: 10.1590/S0100-69912006000600016
Abstract: vascular complications after kidney transplantation have been described and pseudoaneurysms represent a well-recognized vascular complication. although the incidence of pseudoaneurysm is low, it may potentially cause graft loss or may even be fatal for the patients if it is not diagnosed and treated quickly. the authors report a case of renal artery pseudoaneurysm diagnosed two months posttransplantation with cadaveric graft, the treatment and literature data.
Volume de madeira e concentra??o foliar de nutrientes em parcelas experimentais de Eucalyptus grandis fertilizadas com lodos de esgoto úmido e seco
Silva, Paulo Henrique Muller da;Poggiani, Fábio;Gonalves, José Leonardo de Moraes;Stape, José Luiz;
Revista árvore , 2008, DOI: 10.1590/S0100-67622008000500009
Abstract: in brazil, several municipalities are building waste treatment plants and in the future thousands of tons of sewage sludge will be generated. sewage sludge is the waste left over after wastewater treatment and its disposal needs to be well planned, considering sanitary, environmental, economic and social implications. sewage sludge (biosolids) is high in organic content and plant nutrient and could be applied as fertilizer in forest plantations. the aim of this research, conducted at the experimental station of itatinga (university of s?o paulo) was to evaluate the effects of increasing doses (10, 20 and 30 tons ha-1) of wet and dry biosolids(pellets), complemented with k and b, and applied to planting rows in experimental eucalyptus grandis plots 1.5 years after seedling plantation. trunk volume increased significantly regarding the eucalypt trees that received wet and dry sewage sludge, compared to the control treatment (no fertilization), and a similar growth of eucalypt trees that received full mineral fertilization. regarding mineral nutrition, a positive correlation was observed between doses of biosolids and p, ca, and zn concentrations in the leaves, but a negative effect for mn and biosolid dose. the foliar concentration of all the nutrients in the biosolid-treated eucalypt trees remained within the limits observed in commercial plantations, with no signs of nutritional imbalance.
Avalia??o do número de células caliciformes nas criptas da mucosa col?nica com e sem transito intestinal
Mello, Rodrigo de Oliveira;Silva, Camila Morais Gonalves da;Fonte, Fábio Piovezan;Silva, Daniele Luchinitz Ferraz;Pereira, José Aires;Margarido, Nelson Fontana;Martinez, Carlos Augusto Real;
Revista do Colégio Brasileiro de Cirurgi?es , 2012, DOI: 10.1590/S0100-69912012000200010
Abstract: objective: to measure the thickness of the crypts and quantify the number of goblet cells of the colonic mucosa with and without intestinal transit, relating them to exclusion time. methods: sixty wistar rats were divided into three groups of 20 animals each according to the time of the final operation for the removal of the colon, in six, 12 or 18 weeks. in each group 15 animals underwent colonic exclusion by left colon proximal colostomy and distal mucous fistula, and five underwent only laparotomy (control). the colons with and without fecal stream were removed, processed and submitted to histological sections stained with hematoxylin-eosin. the height of the colonic crypts and the number of goblet cells were measured by computerized morphometry. we used the student t test and kruskal-wallis test for comparison and analysis of variance, using a significance level of 5% (p <0.05). results: the height of the crypts decreased in segments without fecal stream (p =0.0001), reducing from six to 12 weeks of exclusion (p = 0.0003), stabilizing thereafter. the number of goblet cells in the crypts was smaller in segments without transit after 12 and 18 weeks (p = 0.0001), but increased as the time of exclusion progressed (p = 0.04) conclusion: the exclusion of intestinal transit decreases the thickness of the colonic crypts and the number of goblet cells in the segments without transit. there is an increased number of goblet cells in the course of time exclusion.
Sistema radicular de plantas de cobertura sob compacta??o do solo
Gonalves, Wainer G.;Jimenez, Rodrigo L.;Araújo Filho, Jer?nimo V. de;Assis, Renato L. de;Silva, Gilson P.;Pires, Fábio R.;
Engenharia Agrícola , 2006, DOI: 10.1590/S0100-69162006000100008
Abstract: with the objective of evaluate the root growth capacity in the compacted soil layer, four vegetal species of the cover crops (amaranth, pearl millet adr500, finger millet and kenaf) were cultivated in columns of pvc with increasing levels of subsurface compaction (soil bulk densities: 1.18; 1.34; 1.51 and 1.60 mg m-3). the experiment was carried out in a greenhouse conditions, using a dusky red latosol. the subsurface compacted layer was restrictive to the roots growth of the studied species, causing the root concentrating to the surface. pearl millet adr500 and the amaranth were the species that had detached in the production of dry matter weight and developed itself in the compacted layers and below of them. pearl of millet adr500 presented the biggest root length density in all layers. finger millet and the amaranth had similar behavior in relation to the shoot length root. finger millet and kenaf had presented minor dry matter weight of root in relation to the other species. the kenaf presented minors values of dry matter, but it was not affected by the presence of compacted layers.
O papel da comunidade de fungos micorrízicos arbusculares (FMA) autóctones no desenvolvimento de espécies vegetais nativas em área de dunas de restinga revegetadas no litoral do Estado da Paraíba
Oliveira, Jo?o Ricardo Gonalves de;Souza, Renata Gomes de;Silva, Fábio Sérgio Barbosa da;Mendes, Alessandra Salviano Monteiro;Yano-Melo, Adriana Mayumi;
Brazilian Journal of Botany , 2009, DOI: 10.1590/S0100-84042009000400005
Abstract: association of arbuscular mycorrhizal fungi (amf) and plant roots constituted one of the most important ways to mitigate the impact of disturbed area. the aim of this work was to characterize the amf community in the soil from revegetated dune area and to analyze its influence on the native plant development. soils were collected in rainfall season in the revegetated area. glomalin-related soil protein production (grsp), glomerospores density and diversity were evaluated. the influence of amf autoctone community was determined for two native plants: tabebuia roseo-alba (ridl.) sandw. (peroba) and tocoyena selloana schum. (jenipapo-bravo). experimental design for each species was completely randomized with 10 replicates, two treatment - native soil (sn) and disinfested native soil (snd) - were tested. parameters evaluated were: height, shoot diameter, leaf number and area, shoot and root dry mass, nutrient contents, glomerospore density, mycorrhizal colonization and glomalin-related soil protein production (grsp). in dune revegetated soil was found 1 glomerospore g-1 soil and 1.20 ± 0.04 mg grsp g-1 soil, and six amf species were identified. native soil promoted more development to plant and fungi. mycorrhizal colonization in peroba was 80% and in jenipapo-bravo 60%. then, amf are present in revegetated area after mining contributing to growth of native plant species studied in greenhouse conditions, suggesting that their performance is affected by arbuscular mycorrhiza symbiosis.
Crescimento de plantas de cobertura sob diferentes níveis de compacta??o em um Latossolo Vermelho
Jimenez, Rodrigo L.;Gonalves, Wainer G.;Araújo Filho, Jer?nimo V. de;Assis, Renato L. de;Pires, Fábio R.;Silva, Gilson P.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2008, DOI: 10.1590/S1415-43662008000200002
Abstract: with the objective of evaluating the growth of cover crops under different levels of soil compaction an experiment was installed under greenhouse conditions. a completely randomized block design was used with four replications, in which the treatments consisted of a factorial with four vegetal species of cover crops: cajanus cajan, sesamum indicum l., pennisetum glaucum l. cultivar adr 300 and chenopodium quinoa willd., in four levels of subsurface compaction (soil bulk density: 1.18; 1.34; 1.51 and 1.60 mg m-3) in a typic distropheric red latosol. the compaction of the subsurface soil was restrictive to the root growth of the studied species, concentrating them in the upper layer. the pennisetum glaucum cultivar adr 300 excelled in the production of dry matter and was able to develop in the compacted layers and below them. the increase of soil density in the compacted layer did not influence the root length density of the cajanus cajan, sesamum indicum and chenopodium quinoa, however these species had inferior performance when compared with the pennisetum glaucum (l.) cultivar adr 300, which presented greater root length density in all layers and densities.
Vasculite cutanea induzida por propiltiouracil
Milanez, Fernanda Manente;Costa, Leonardo Atem Gonalves A.;José, Fábio Freire;Enokihara, Milvia M. S. S.;Souza, Alexandre Wagner Silva de;
Revista Brasileira de Reumatologia , 2008, DOI: 10.1590/S0482-50042008000100013
Abstract: the use of propylthiouracil (ptu) is associated with the development of different auto-antibodies, amongst them are antineutrophil cytoplasmic antibodies (anca) that are involved in the pathogenesis of anca associated systemic vasculitis. the case of a 46-years old woman who presented cutaneous vasculitis when taking ptu for graves' disease is reported. perinuclear anca (p-anca) was positive with titer > 1/320, but anti-myeloperoxidase antibodies were not detected. skin biopsy showed leucocytoclastic vasculitis. the patient improved within ten days after withdrawing ptu and the resolution of hyperthyroidism was achieved with radioiodine (131i). the p-anca test remained positive > 1/320 eight months and four years after ptu withdrawal.
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