oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

4 ( 1 )

2020 ( 88 )

2019 ( 533 )

2018 ( 661 )

Custom range...

Search Results: 1 - 10 of 370251 matches for " Gibran da S.;Cavalcante "
All listed articles are free for downloading (OA Articles)
Page 1 /370251
Display every page Item
Rendimento do inhame adubado com esterco bovino e biofertilizante no solo e na folha
Silva, Jandiê A. da;Oliveira, Ademar P. de;Alves, Gibran da S.;Cavalcante, Lourival F.;Oliveira, Arnaldo N.P. de;Araújo, Maria A. M.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2012, DOI: 10.1590/S1415-43662012000300003
Abstract: the objective of this study was to evaluate the yam yield, cultivar da costa, fertilized with bovine manure doses and biofertilizer. the experimental design was randomized blocks, in subdivided plots 6 x 2 + 1 with three repetitions. in plots six doses of cattle manure (0; 6; 12; 18; 24 and 30 t ha-1) were tested, factorially combined with the presence and absence of biofertilizer and in subplots, two forms of application of biofertilizer in the soil and by spray on the leaf and an additional treatment with conventional fertilization (animal manure and npk). the doses of 30 t ha-1 of bovine manure and the biofertilizer which was applied in the soil and leaf produced tubers with ideal average weight for the commercialization. the bovine manure in doses of 19.2 t ha-1 and in the absence of biofertilizer provided maximum productivity of 20.3 t ha-1 of commercial tubers. subplots in which the biofertilizer was applied to the soil and leaf, the dose of 30 t ha-1 of cattle manure was responsible, respectively, for maximum yields of 22.8 and 24 t ha-1 of commercial tubers. the organic and conventional fertilizations did not cause any significant change in the mean tuber weight, but the conventional fertilization increased the productivity of commercial tuber.
Períodos de interferência das plantas daninhas na cultura do girassol em Rond nia Periods of weed interference in sunflower crop in Rond nia
Gibran da S. Alves,Francilene de L. Tartaglia,Jhonatas C. Rosa,Pamela C. de Lima
Revista Brasileira de Engenharia Agrícola e Ambiental , 2013,
Abstract: Objetivou-se, neste trabalho, determinar os períodos de interferência das plantas daninhas na cultura do girassol e seus efeitos sobre o diametro do capítulo, teor de óleo, rendimento de óleo e produtividade. Adotou-se o delineamento experimental de blocos ao acaso com três repeti es. Os tratamentos foram distribuídos em esquema fatorial 2 x 2 x 5, sendo os fatores: cultivares (Embrapa 122 e Hélio 358), modalidade de competi o (na presen a e na ausência de plantas daninhas) e períodos de convivência ou controle das plantas daninhas da emergência aos 15, 30, 45, 60 e 110 dias. As variáveis mensuradas foram diametro de capítulo, teor de óleo, rendimento de óleo e produtividade. As plantas daninhas interferem negativamente no diametro do capítulo, produtividade e rendimento de óleo, mas o convívio com as mesmas aumentou o teor de óleo das sementes, além de reduzir em 76,83 e 92,68% a produtividade dos cultivares Embrapa 122 e Hélio 358, respectivamente. Admitindo-se uma perda de 10% na produtividade, o período anterior à interferência (PAI), o período total de preven o a interferência (PTPI) e o período crítico de preven o e interferência (PCPI) para a cultivar Embrapa 122 foram de 16; 37 e 21 dias, respectivamente. Para o híbrido Hélio 358 o PAI, o PTPI e o PCPI foram de 24; 43 e 19 dias, respectivamente. The objective of this study was to determine the periods of weed interference in sunflower cultivation, and its effects on the head diameter, oil content, oil yield and its productivity. The experimental design was in the randomized blocks with three replications. The treatments were arranged in a factorial 2 x 2 x 5, with the following factors: cultivar (Embrapa 122 and Hélio 358), modality of competition (in the presence and absence of weeds) and periods of coexistence and control of weed from the emergence until the 15, 30, 45, 60 and 110 days. The measured variables were head diameter, oil content, oil yield and productivity. Weeds interfere negatively in the head diameter, in the productivity, and in the yield of oil, but the coexistence with the weeds increases the oil content of seeds, as well as reduces in 76.83 and 92.68% the productivity of cultivars Embrapa 122 and Hélio 358, respectively. Assuming a 10% loss in productivity, the PAI, PTPI and the critical period of prevention and interference (PCPI) for the cultivar Embrapa 122 were 16, 37 and 21 days, respectively. For the hybrid Hélio 358 the period before interference (PAI), the PTPI and the PCPI were 24, 43 and 19 days, respectively.
Incidência de insetos e doen?as em cultivares e popula??es de cebola
Leite, Germano LD;Sá, Veríssimo Gibran M de;Guanabens, Rafael EM;Costa, Candido A da;Silva, Farley Willian S;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000100019
Abstract: onion (allium cepa l.) is one of the most important vegetable crops in brazil. it is attacked by insects and diseases, such as thrips tabaci lindeman (thysanoptera: thripidae), botrytis squamosa (j.c. walker), alternaria porri (ellis) and colletotrichum gloeosporioides f.sp. cepae penz. this work evaluated the incidence of thrips, onion leaf blight, purple blotch, and smudge in eight elite populations of the embrapa's onion breeding program ("cnph 6415", "cnph 6074", "cnph 6244", "cnph 6400 chata", "cnph 6400 redonda", "valencianita" x "aurora", "primavera" x "pera norte" and "pera norte" x "primavera") and eight commercial onion varieties ("granex 429", "brs cascata", "belém ipa 9", "crioula alto vale", "bola precoce", "primavera", "régia" and "1015 y"). in regions of high incidence of c. gloeosporioides, the recommended materials are "cnph 6415", "cnph 6074" and "cnph 6244"; "cnph 6415", "cnph 6074", "cnph 6244", "brs cascata", "valencianita" x "aurora", "primavera" x "pera norte", "belém ipa 9", "bola precoce", "primavera" and "régia" are recommended for a. porri high incidence; and of t. tabaci are "cnph 6415", "cnph 6074", "granex 429", "bola precoce", "primavera" and "régia". the onion populations "cnph 6415" and "cnph 6074" are resistant to those two diseases and thrips. on the other hand, "cnph 6400 chata", "cnph 6400 redonda" and "1015 y" are susceptible to c. gloeosporioides, a. porri and t. tabaci. all the studied materials were considered susceptible to b. squamosa.
The reproductive capacity of Panstrongylus megistus (Hemiptera: Reduviidae) males treated with precocenes
Cavalcante, Vania M. S.;Regis,da N.;
Memórias do Instituto Oswaldo Cruz , 1992, DOI: 10.1590/S0074-02761992000400002
Abstract: reproductive performance including mating, semen transfer, egg production and hatching rate were investigated in pairs of panstrongylus megistus in wich the male was treated with either precocene ii or ethoxyprecocene ii, topically applied shortly after imaginal molt. eighty percent of the males were not able to mate for a period as long as 40 days after treatment. those males wich did mate (20%) produced small spermatophores; a few (10%) were unable to transfer spermatozoa to female, while the others (10%) exhibited reproductive performance similar to that of non-treated males. the cumulative effects of the precocene on the different stages of reproduction resulted in a drastic reduction of offspring production. the anti-allatal compound precocene seems to inhibit successful reproduction through a corpus allatum inactivation and subsequent lack of secretory activity of the male accessory glands.
Corpectomia da coluna toracolombar com coloca??o de cage por acesso único via posterior: técnica cirúrgica e resultados de seis pacientes
Nogueira, Fabiano Morais;Morais, Dionei Freitas de;Adry, Rodrigo Antonio Rocha da Cruz;Cohen, Moysés Isaac;Chaves, Renato Andrade;Rufca, Gibran Franzoni;Teixeira, Marco Aurélio Fernandes;Martucci Junior, Sérgio Robinson;
Coluna/Columna , 2011, DOI: 10.1590/S1808-18512011000200003
Abstract: objective: to evaluate retrospectively the results of a series of patients undergone thoracic or lumbar corpectomy via single posterior approach with placement of cage and segmental instrumented arthrodesis. the surgical technique performed was described. methods: the retrospective study evaluated six patients with vertebral collapse, biomechanical instability or neurological damage caused by different etiologies. these patients showed neural decompression and received indication to perform corpectomy and circumferential reconstruction with cage being conducted exclusively by posterior approach. results: four patients were male and 2 female. the average age was 58 years (22-82 years) and mean follow up was 10.5 months (2-24 months). in three cases the resection was only one vertebral body and in three cases two vertebral bodies. all patients improved in neurological status and low back pain or radicular pain. the indications for surgery were three cases of spondylodiscitis, one of osteoporotic fracture, one case of metastatic tumor and one case of primary tumor. three patients had complications requiring surgical revision; which resulted in improvement of symptoms. the complications that occurred were cerebrospinal fluid leakage, lumbar radiculopathy, wound infection, meningitis and failure of instrumentation. conclusion: patients submitted to corpectomy via single posterior approach showed favorable outcomes with improvement of neurological deficit or pain in all cases. this technique was efficient in the reconstruction of circumferential column avoiding the complications of the traditional anterior-posterior approach.
Intertidal life: field observations on the clingfish Gobiesox barbatulus in southeastern Brazil
Pires, Tiago H. S;Gibran, Fernando Z;
Neotropical Ichthyology , 2011, DOI: 10.1590/S1679-62252011005000001
Abstract: the clingfish gobiesox barbatulus shows nocturnal feeding activity, spending most part of the day stationary and adhered to the inferior part of stones. to feed, this species uses the sit-and-wait and particulate feeding tactics. it shows a carnivorous feeding habit mostly consuming small benthic crustaceans. it can move in two ways: (1) "stone-by-stone", sliding its ventral sucker disc across each stone and (2) "surf", when it takes advantage of the energy of the ebbing tide to quickly cross a distance up to four times its body length. its reproductive season occurs between the end of spring and the beginning of summer, during which time it lays about 2,000 adhesive eggs of 1 mm each in a single layer under stones. it has more than one egg-laying session per reproductive season, therefore showing several different developmental stages. it performs fanning, mouthing and guarding of the eggs as forms of parental care. data shown here also indicates that g. barbatulus has some shelter fidelity, being probably territorial.
Intertidal life: field observations on the clingfish Gobiesox barbatulus in southeastern Brazil
Tiago H. S Pires,Fernando Z Gibran
Neotropical Ichthyology , 2011,
Abstract: The clingfish Gobiesox barbatulus shows nocturnal feeding activity, spending most part of the day stationary and adhered to the inferior part of stones. To feed, this species uses the sit-and-wait and particulate feeding tactics. It shows a carnivorous feeding habit mostly consuming small benthic crustaceans. It can move in two ways: (1) "stone-by-stone", sliding its ventral sucker disc across each stone and (2) "surf", when it takes advantage of the energy of the ebbing tide to quickly cross a distance up to four times its body length. Its reproductive season occurs between the end of spring and the beginning of summer, during which time it lays about 2,000 adhesive eggs of 1 mm each in a single layer under stones. It has more than one egg-laying session per reproductive season, therefore showing several different developmental stages. It performs fanning, mouthing and guarding of the eggs as forms of parental care. Data shown here also indicates that G. barbatulus has some shelter fidelity, being probably territorial. O peixe-pregador Gobiesox barbatulus apresenta atividade alimentar noturna, permanecendo estacionário e aderido à parte inferior de pedras durante a maior parte do dia. Para se alimentar utiliza as táticas de espreita e consumo de material particulado. Apresenta hábito alimentar carnívoro e ingere principalmente crustáceos bent nicos. Locomove-se principalmente de duas formas: (1) "pedra-a-pedra", deslizando seu disco adesivo ventral por sobre pedras adjacentes e (2) "surfe", quando se aproveita da energia da maré vazante para percorrer rapidamente distancias de até quatro vezes seu tamanho. A época reprodutiva desta espécie ocorre entre o final da primavera e início do ver o, quando deposita aproximadamente 2.000 ovos adesivos de 1 mm de diametro cada e dispostos em uma única camada na parte inferior de pedras. Possui mais de uma desova por esta o reprodutiva e, portanto, contendo ovos em diferentes estágios de desenvolvimento. Realiza ventila o, limpeza e guarda dos ovos como formas de cuidado parental. Os dados aqui apresentados também indicam que G. barbatulus possui certa fidelidade aos locais nos quais se abriga, sendo provavelmente uma espécie territorial.
Apraxia da fala na infancia em foco: perspectivas teóricas e tendências atuais
Souza, Thaís Nobre Uch?a;Pay?o, Miscow da Cruz;Costa, Ranilde Cristiane Cavalcante;
Pró-Fono Revista de Atualiza??o Científica , 2009, DOI: 10.1590/S0104-56872009000100013
Abstract: background: the appearance of the praxis disorder during the firsts years of development has been frequently designated as chidhood apraxia of speech. the present theoretical perspectives direct the speech therapist to new tendencies regarding therapeutic intervention. aim: to present a bibliographic review of the last two years about chidhood speech apraxia. conclusion: the present literature about childhood speech apraxia indicates an inclination among the researches that may motivate a mixed therapeutic broaching, in which one contemplates not only aspects pertinent to language processing in a phonological representational level, but alslo aspects related to motor programming and pre-articulatory sequencing of speech itself.
CARACTERIZA??O FENOTíPICA DE BACTéRIAS DIAZOTRóFICAS ENDOFíTICAS ISOLADAS DE CANA DE A?úCAR
Cavalcante de Lima,Robson; Kozusny-Andreani,Dora Inés; Andreani Junior,Roberto; Fonseca,Lucas da;
Revista Facultad Nacional de Agronomía, Medellín , 2011,
Abstract: the use of inoculants containing diazotrophic microorganism in sugarcane can contribute to promoting the growth of these plants and tp promote significant gains in productivity. the objective of this study was to characterize diazotrophic bacteria isolated from stalks of sugarcane. we used the means of a semi-solid nfb and jnfb without added nitrogen. five strains were isolated native diazotrophs which were evaluated microscopically by gram stain, the intrinsic resistance to antibiotics, fungicide furadan (i.a. carbofuran) and insecticide regent (i.a. fipronil ) and ability to fix nitrogen in greenhouse and field conditions. all isolates were characteristic of gram-negative, and for the intrinsic resistance to antibiotics showed widespread resistance. a native uccbc5 strain showed resistance to the fungicide furadan and the insecticide regente. bacteria isolated uccbc1 and uccbc5 present capacity and efficiency of fixing atmospheric nitrogen under conditions of greenhouse. it was found that the strain uccbc5 resistant to the fungicide furadan and the insecticide regente has capacity of fixing atmospheric nitrogen in field conditions. in the evaluation of doses of inoculation was observed that there is a dose of inoculant / efficiency of nitrogen fixation. these results indicate that endophytic bacteria can be used, in some cases as a substitute for nitrogen in sugarcane.
CARACTERIZA O FENOTíPICA DE BACTéRIAS DIAZOTRóFICAS ENDOFíTICAS ISOLADAS DE CANA DE A úCAR PHENOTYPIC CHARACTERIZATION OF ENDOPHYTIC DIAZOTROPHIC BACTERIAS ISOLATED OF SUGARCANE
Robson Cavalcante de Lima,Dora Inés Kozusny-Andreani,Roberto Andreani Junior,Lucas da Fonseca
Revista Facultad Nacional de Agronomía, Medellín , 2011,
Abstract: A utiliza o de inoculantes contendo microrganismos diazotróficos na cana-de-a úcar pode contribuir para a promo o do crescimento destas plantas e promover ganhos significativos na produtividade. Objetivou-se no presente trabalho caracterizar bactérias diazotróficas isoladas de colmos cana-de-a úcar. Foram utilizados os meios de cultivo semi-sólidos NFb e JNFb sem adi o de nitrogênio. Foram isoladas cinco estirpes nativas de bactérias diazotróficas as quais foram avaliadas microscopicamente pela colora o de Gram e em rela o à resistência intrínseca aos antibióticos; fungicida furadan (i.a. carbofuran) e inseticida regente (i.a. fipronil), e à capacidade de fixar o nitrogênio em condi es de casa-de-vegeta o e campo. Os resultados obtidos permitiram observar que todos os isolados apresentaram características de bacilos Gram-negativos, e ampla resistência aos antibióticos. A estirpe nativa UCCBc5 apresentou resistência ao fungicida furadan e ao inseticida regente. As bactérias isoladas UCCBc1 e UCCBc5 apresentam capacidade e eficiência de fixar o nitrogênio atmosférico em condi es de casa-de-vegeta o. Verificou-se que a estirpe UCCBc5, resistente ao furadan e ao regente apresentou capacidade fixadora do nitrogênio atmosférico, em condi es de campo. Na avalia o de doses de inoculante observou-se que existe rela o dose de inoculante/ eficiência de fixa o de nitrogênio. Estes resultados permitiram afirmar que as bactérias diazotróficas endofíticas podem ser utilizadas, em alguns casos, como substituto da aduba o nitrogenada, na cultura de cana-de- a úcar. The use of inoculants containing diazotrophic microorganism in sugarcane can contribute to promoting the growth of these plants and tp promote significant gains in productivity. The objective of this study was to characterize diazotrophic bacteria isolated from stalks of sugarcane. We used the means of a semi-solid NFB and JNFb without added nitrogen. Five strains were isolated native diazotrophs which were evaluated microscopically by Gram stain, the intrinsic resistance to antibiotics, fungicide Furadan (i.a. carbofuran) and insecticide Regent (i.a. fipronil ) and ability to fix nitrogen in greenhouse and field conditions. All isolates were characteristic of Gram-negative, and for the intrinsic resistance to antibiotics showed widespread resistance. A native UCCBc5 strain showed resistance to the fungicide Furadan and the insecticide Regente. Bacteria isolated UCCBc1 and UCCBc5 present capacity and efficiency of fixing atmospheric nitrogen under conditions of greenhouse. It was found that the
Page 1 /370251
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.