Repellency
Mostrando 13-23 de 23 artigos, teses e dissertações.
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13. Potencial inseticida de extratos de funcho, erva-doce, cravo-da-Ãndia e do preparado homeopÃtico para o controle de pulgÃo em couve / Insecticidal Potential of Fennel, Sweet Herb, Clove Extracts and Homeopathic Preparations to Control Aphid in Cabbage
O uso de substÃncias naturais para manejo de pragas da agricultura à uma opÃÃo economicamente viÃvel e traz benefÃcios tanto ao homem como ao ambiente, devido a sua baixa persistÃncia e toxicidade. Dessa forma, o objetivo do trabalho em questÃo foi verificar o potencial inseticida de extratos e Ãleos essenciais de funcho (Foeniculum vulgare), erva d
Publicado em: 2010
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14. Impact of botanical insecticide on Apis mellifera, Nannotrigona testaceicornis and Tetragonisca angustula (Hymenoptera: Apidae) / Impacto de inseticidas botânicos sobre Apis mellifera, Nannotrigona testaceicornis e Tetragonisca angustula (Hymenoptera: Apidae)
Adverse effects of organo-synthetic products have motivated search in alternative control of pests. Among this alternative, botanical insecticides present a viable option for the management of these organisms. However, before the choice of the botanical insecticide, some criteria must be analyzed, such as: efficiency to control the pest and selectivity to be
Publicado em: 2009
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15. Atividade inseticida de óleos essenciais sobre Sitophilus zeamais Mots. (Coleoptera : Curculionidae) / Insecticidal activity of essential oils on Sitophilus zeamais Mots. (Coleoptera : Curculionidae)
Os óleos essenciais constituem alternativa promissora para o manejo de Sitophilus zeamais em milho armazenado. Neste trabalho avaliou-se a toxicidade, a repelência e a persistência de óleos essenciais em milho armazenado, utilizando-se S. zeamais. As CL50s dos óleos de folhas de Piper hispidinervum, Eugenia uniflora, Cinnamomum zeylanicum, composto euge
Publicado em: 2009
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16. Selectivity and behavioral response of the predator Doru luteipes to insecticides / Seletividade e resposta comportamental do predador Doru luteipes a inseticidas
Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) é considerada a principal praga do milho no Brasil. O seu controle é realizado principalmente por inseticidas. Devido ao alto custo dos inseticidas e ao seu efeito poluidor no meio ambiente, a utilização do controle biológico pode vir a ser mais uma ferramenta de manejo junto ao controle químico. D
Publicado em: 2009
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17. Development and evaluation of nanoemulsions with Carapa guianensis and Copaifera sp. oil, and evaluation of repellency against Aedes aegypti / Desenvolvimento e avaliação de nanoemulsões com óleos de Carapa guianensis e Copaifera sp. e estudo da ação repelente frente a Aedes aegypti.
As doenças transmitidas por mosquitos representam uma das maiores causas de morbidade e mortalidade em todo o mundo, principalmente em países tropicais. O uso tópico de repelentes em determinadas situações torna-se a única alternativa para evitar o ataque por estes artrópodes. Os óleos de andiroba (Carapa guianensis) e copaíba (Copaifera sp.) possue
Publicado em: 2008
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18. The fumigant and repellent activity of aliphatic lactones against Pediculus humanus capitis (Anoplura: Pediculidae)
New alternative insecticides are necessary for the chemical control of head lice. In this study the fumigant knockdown time 50% (KT50) and repellency index (RI) of three aliphatic lactones was compared with two essential oils and DDVP, against permethrin-resistance Pediculus humanus capitis from Argentina. In the fumigant assay, none of the lactones were eff
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-02
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19. Toxicity of pyrethroids and repellency of diethyltoluamide in two deltamethrin-resistant colonies of Triatoma infestans Klug, 1834 (Hemiptera: Reduviidae)
The aim of the currrent investigation was to evaluate (a) the toxicity of three pyrethroids (deltamethrin, lambda-cyhalothrin, and tetramethrin); (b) the effect of these insecticides on the locomotor activity; and (c) the repellent effect of N,N-diethyl-m-toluamide (DEET) on two deltamethrin-resistant strains of Triatoma infestans from Argentina (El Chorro a
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-02
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20. Water repellency induced by pulmonary surfactants.
1. Pure cotton fabric was partially carboxylated to produce a tough, porous, hydrophilic sub-phase to stimulate the epithelial membrane of the alveolar wall from a permeability standpoint. 2. Two of the predominant pulmonary surfactants, dipalmitoyl lecithin (DPL) and dipalmitoyl phosphatidylethanolamine (DPPE), were found to inhibit wetting of this syntheti
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21. Response of Ants to a Deterrent Factor(s) Produced by the Symbiotic Bacteria of Entomopathogenic Nematodes
The production of an ant-deterrent factor(s) (ADF) by Xenorhabdus nematophila and Photorhabdus luminescens, the symbiotic bacteria of the nematodes Steinernema carpocapsae and Heterorhabditis bacteriophora, respectively, was examined. In addition to an in vivo assay in which bacteria were tested for their ability to produce ADF within insect cadavers (M.E. B
American Society for Microbiology.
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22. Pulmonary surfactant: hydrophobic nature of the mucosal surface of the human amnion.
The contact angle has been measured for a drop of saline placed upon the rinsed mucosal surface of the amnion in eleven human placental membranes obtained from normal births at full term. The contact angle averaged 70 degrees, indicating a hydrophobic surface comparable with graphite (86 degrees), polyethylene (94 degrees) or oxyntic tissue (85 degrees) whic
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23. New roles for cis-jasmone as an insect semiochemical and in plant defense
cis-Jasmone, or (Z)-jasmone, is well known as a component of plant volatiles, and its release can be induced by damage, for example during insect herbivory. Using the olfactory system of the lettuce aphid to investigate volatiles from plants avoided by this insect, (Z)-jasmone was found to be electrophysiologically active and also to be repellent in laborato
The National Academy of Sciences.