19,874 research outputs found

    Controle genético da resistência do milho ao enfezamento pálido causado por espiroplasma.

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    Suplemento. Edição dos resumos do 45º Congresso Brasileiro de Fitopatologia, Manaus, 2012

    Extraction of bixin from annatto seeds using supercritical carbon dioxide

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    The solubility of 93% pure bixin in supercritical carbon dioxide (SC-CO2) and of the bixin present in annatto seeds (Bixa orellana L.) was measured. For the seeds, the measurements were made in a temperature range from 30 to 50ºC and pressure between 10 and 35 MPa and for the pure bixin, at 40ºC from 10 to 35 MPa. The main pigments of annatto seeds are bixin and norbixin, but the extracts only showed the presence of cis and trans-bixin, indicating that norbixin is not soluble in SC-CO2. The annatto seeds used in the experiments contained about 2.7% bixin and 3.1% oil. In the seeds, the crossover point of solubility was at about 28 MPa and values for solubility were about ten times higher than those of the pure bixin, giving evidence that the oil acted as a co-solvent with the CO2.FAPES

    Fontes de adubação orgânica para o cultivo do melão (Cucumis melo cv. Gold mine) sobre a esporulação de fungos micorrízicos arbusculares (FMA).

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    Avaliação do comportamento da esporulação dos FMA, associados ao melão, submetidos a diversas combinações de diferentes resíduos orgânicos.1 CD-ROM

    Herpetofauna, Espora Hydroelectric Power Plant, state of Goiás, Brazil.

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    We provide a checklist of the herpetofaunal assemblage from Espora Hydroelectric Power Plant region(UHE Espora), southwestern of the state of Goiás, Brazil. Representatives of 32 amphibian and 71 reptile species wereobtained during faunal monitoring and faunal rescue programs carried out in the study area. The obtained species listand distribution records are here discussed in an attempt to improve the still limited knowledge on Cerradoherpetofaunal assemblages

    Estratégias de prevenção e controle da tristeza parasitária bovina (TPB) a partir da avaliação molecular da infecção em rebanhos criados em diferentes regiões fisiográficas dos Estados de Rondônia e Acre.

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    Este traballho apresenta algumas estratégias para combater e controlar a Tristeza Parasitária Bovina (TPB) no Estado de Rondônia e Acre. A TPB é uma das parasitemias que determina maior morbidade e mortalidade para bezerros nos primeiros meses de vida, principalmente os de raças taurinas e, aqueles provenientes de cruzamentos entre zebuínos e taurinos.bitstream/CPAF-RO-2010/12228/1/cot329-tristezaparasitaria.pd

    Propagação vegetativa de velame, uma espécie medicinal nativa da Caatinga.

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    Objetivou-se com este trabalho, avaliar o efeito da auxina ácido naftalenoacético no enraizamento de estacas de velame.Suplemento. Edição dos Anais do 52 Congresso Brasileiro de Olericultura, Salvador, jul. 2012

    Pharmacological potential of methylxanthines: Retrospective analysis and future expectations

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    Methylated xanthines (methylxanthines) are available from a significant number of different botanical species. They are ordinarily included in daily diet, in many extremely common beverages and foods. Caffeine, theophylline and theobromine are the main methylxanthines available from natural sources. The supposedly relatively low toxicity of methylxanthines, combined with the many beneficial effects that have been attributed to these compounds through time, generated a justified attention and a very prolific ground for dedicated scientific reports. Methylxanthines have been widely used as therapeutical tools, in an intriguing range of medicinal scopes. In fact, methylxanthines have been/were medically used as Central Nervous System stimulants, bronchodilators, coronary dilators, diuretics and anti-cancer adjuvant treatments. Other than these applications, methylxanthines have also been hinted to hold other beneficial health effects, namely regarding neurodegenerative diseases, cardioprotection, diabetes and fertility. However, it seems now consensual that toxicity concerns related to methylxanthine consumption and/or therapeutic use should not be dismissed. Taking all the knowledge and expectations on the potential of methylxanthines into account, we propose a systematic look at the past and future of methylxanthine pharmacologic applications, discussing all the promise and anticipating possible constraints. Anyways, methylxanthines will still substantiate considerable meaningful research and discussion for years to come.info:eu-repo/semantics/publishedVersio

    Bio-ecologia, importância médicoveterinária e controle de carrapatos, com ênfase no carrapato dos bovinos, Rhipicephalus (Boophilus) microplus.

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    Características gerais dos carrapatos; Biologia de Ixodidae e Argasidae; Ciclo de um hospedeiro; Ciclo de dois hospedeiros; Ciclo de três hospedeiros; Epidemiologia de ixodídeos em ambientes tropicais e equatoriais; Importância médico-veterinária dos carrapatos; Transmissão de patologias por carrapatos; Carrapatos como causadores de doenças; Carrapatos como transmissores de vírus; Carrapatos como transmissores de rickettsias; Carrapatos como vetores de bactérias; Carrapatos como vetores de fungos; Carrapatos como vetores de protozoários; Controle de carrapatos; Controle de Rhipicephalus (Boophilus) microplus; Desenvolvimento da resistência de cepas de carrapatos aos grupos acaricidas; Carrapaticidas de contato; Carrapaticidas sistêmicos; Manejo de carrapaticidas; Como realizar um eficiente banho carrapaticida.bitstream/CPAF-RO-2010/14316/1/doc104-carrapatos.pd
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