436 research outputs found

    Efeito da terra de diatomácea sobre o desenvolvimento biológico de zabrotes subfasciatus em feijoeiro (Phaseolus vulgaris).

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    Este trabalho teve como objetivo verificar o efeito da terra de diatomácea no desenvolvimento biológico do caruncho Z. subfasciatus.CONAFE

    Efeito da terra de diatomácea sobre a mortalidade de adultos de zabrotes subfasciatus em feijoeiro (Phaseolus vulgaris).

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    O objetivo deste trabalho foi avaliar o efeito da Terra de Diatomácea na mortalidade do caruncho do feijão Z. subfasciatus em diferentes períodos de armazenamento.CONAFE

    Efeito da terra de diatomácea sobre Zabrotes subfasciatus em feijoeiro (Phaseolus vulgaris).

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    O objetivo deste trabalho foi avaliar o efeito da Terra Diatomácea na mortalidade do caruncho do feijão Zabrotes subfasciatus em diferentes períodos de armazenamento.Conpeex 2010

    Efeito da terra de diatomácea na mortalidade do caruncho do feijão Zabrotes subfasciatus.

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    Terra de diatomácea é um pó inerte extraído de depósitos fósseis de esqueletos de algas diatomáceas, cujo principal constituinte é a sílica. Esta causa a mortalidade do inseto por ação na abração e adsorção de lipídios da epicutícula, causando a morte por desidratação. Com o objetivo de verificar o efeito deste pó inerte na mortalidade do caruncho, 800 g de grãos de feijão da cultivar Pérola foram colocados em sacos plásticos e tratados com a terra de diatomácea (Keepdry®) na dosagem de um kg/tonelada de grãos

    Phonon-like hydrogen-bond modes in protic ionic liquids

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    Gigahertz- to terahertz-frequency infrared and Raman spectra contain a wealth of information concerning the structure, intermolecular forces, and dynamics of ionic liquids. However, these spectra generally have a large number of contributions ranging from slow diffusional modes to underdamped librations and intramolecular vibrational modes. This makes it difficult to isolate effects such as the role of Coulombic and hydrogen-bonding interactions. We have applied far-infrared and ultrafast optical Kerr effect spectroscopies on carefully selected ions with a greater or lesser degree of symmetry in order to isolate spectral signals of interest. This has allowed us to demonstrate the presence of longitudinal and transverse optical phonon modes and a great similarity of alkylammonium-based protic ionic liquids to liquid water. The data show that such phonon modes will be present in all ionic liquids, requiring a reinterpretation of their spectra

    Exploitation of olive oil mil wastewater for esterase production

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    [Excerpt] Development of bio-sustainable and renewable resource technologies is extremely important on environmental contexts. Waste can contain many valuable substances and, through a suitable process or technology, this material can be converted into value-added products or raw materials that can be used in secondary processes. To reduce the environmental problems caused by olive oil mill wastewater (OOMW), which is the liquid effluent produced during the extraction process of olive oil, this waste can be applied to bioproducts production. (...

    Topological and Universal Aspects of Bosonized Interacting Fermionic Systems in (2+1)d

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    General results on the structure of the bosonization of fermionic systems in (2+1)(2+1)d are obtained. In particular, the universal character of the bosonized topological current is established and applied to generic fermionic current interactions. The final form of the bosonized action is shown to be given by the sum of two terms. The first one corresponds to the bosonization of the free fermionic action and turns out to be cast in the form of a pure Chern-Simons term, up to a suitable nonlinear field redefinition. We show that the second term, following from the bosonization of the interactions, can be obtained by simply replacing the fermionic current by the corresponding bosonized expression.Comment: 29 pages, RevTe
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