188 research outputs found

    Controle biológico dos pulgões do trigo no Brasil.

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    bitstream/item/139374/1/ID43560-1983InformAgropecuariov9n104p49.pd

    Analise citogenetica de suĂ­nos intersexuados.

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    Esclarecer a etiologia da interssexualidade devido aos fatores geneticos, foram observados os produtos de 350 fĂŞmeas em um plantel suĂ­no, nascidos num perĂ­odo de 11 meses

    Hydrodynamic analog of particle trapping with the Talbot effect

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    We present the results of an experimental study of the standing waves produced on the surface of a vertically shaken fluid bath just above the Faraday threshold, when a row of equally spaced pillars protrudes from the surface. When the pillar spacing is twice the Faraday wavelength, the resulting wave field is marked by images of the pillars projected at integer multiples of a fixed distance from the row. This projection effect is shown to be analogous to the well-known Talbot or self-imaging effect in optics, and a Faraday-Talbot length is defined that rationalizes the location of the images. A simple model of point sources emitting circular waves captures the observed patterns. We demonstrate that the images may serve as traps for bouncing and walking droplets.National Science Foundation (U.S.) (Grant CMMI-1333242)National Science Foundation (U.S.) (Grant DMS-1614043)Natioanal Science Foundation (U.S.) (Grant CMMI-1727565

    Atividades de importação e exportação do Laboratório de Quarentena "Costa Lima" no período de 1991 a 2000.

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    Resumo: O Laboratório "Costa Lima", da Embrapa Meio Ambiente, realizou entre 1991 e 2000 170 introduções referentes a 42 espécies de organismos benéficos (6 fungos, 12 bactérias, 2 nematóides entomopatogênicos, 7 ácaros predadores, 13 insetos parasitóides e 2 insetos predadores) e de outros microrganismos. Este trabalho relata todas essas introduções e exportações oficiais de agentes de controle biológico e de outros organismos úteis.bitstream/item/131402/1/2001DC01.pdfNa publicação, ISSN incorreto 1516-4675

    Impact of supporting people with advanced Parkinson’s disease on carer’s quality of life and burden

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    Purpose: The aim of this study was to assess the burden and the quality of life (QoL) perceived by caregivers assisting advanced Parkinson’s disease (PD) patients. Patients and Methods: Consecutive advanced PD patients treated with levodopa/carbidopa intestinal gel (LCIG) or continuous subcutaneous apomorphine infusion (CSAI) or care as usual (CU) and their care partners were recruited during routine visits according to a cross-sectional design. Caregiver’s distress was assessed by Zarit Burden Interview (ZBI) and a QoL survey to evaluate and understand the burden experienced by care partners during family and working activities. Results: A total of 126 patients (53 LCIG, 19 CSAI and 54 CU) and their care partners were enrolled. The ZBI score boxplot showed that LCIG and CU populations have a similar distribution (ZBI inter-quartile range [IQR] values respectively 18–42 for LCIG and 19–43 for CU group), while the CSAI group has a wider score range (IQR 16–52). Caregivers assisting patients in treatment with LCIG have more time to perform family or household duties (p=0.0022), or to engage in leisure activities (p=0.0073) compared to CU, while no difference was found when compared to CSAI group. Approximately 50% of the care partners showed mood changes in the last 6 months and LCIG and CSAI had less impact on caregiver’s mood compared to CU. Patients treated with LCIG were more independent in taking a bath or shower without assistance and were more able to move and walk without assistance. Conclusion: Care partners of advanced PD patients treated with device-aided therapies have more time for their own life and a better perception of their QoL with a tendency to an improvement of mood compared with those of patients treated with CU

    LaboratĂłrio de Quarentena Costa Lima - atividades desenvolvidas desde 1991.

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    O Laboratório de Quarentena "Costa Lima" desempenha funções relativas as introduções de agentes de controle biológico a nível nacional. Desde o inicio de seu funcionamento, o Laboratório realizou 2 introduções de reumatoide entomófagos (ambas Steinernema carpocapsae para o controle de diversas pragas de solo), 3 introduções de ácaros predadores da família Phytoseiidae (Phytoseiulus persimilis, Typhlodromus pyri e Typhlodomalus tenuiscutus, para o controle de Tetranychus urticae, Panonychus ulmi e Mononychellus tanajoa, respectivamente), e 2 espécies de parasitóides (Xanthopimpla stemmator e Apanteles gelechidiivoris, para o controle de Diatraea saccharalis e Scrobipalpuloides absoluta, respectivamente). Atualmente estamos aguardando o recebimento de Diachasmimorpha longicaudata e Cephalonomia stephanoderis para controle de Ceratitis capitata, e Hypotenemus hampei, respectivamente. Aguardamos também Acerophagus coccois, Aenasius vexans e Epidenocarsis diversicornis para controlar Phenacocus herreni, e o reumatóide Deladenus siricidicola linhagem Kaniona para controlar Sirex noctilio. Encontra-se ainda em fase de avaliação quanto a conveniência de introdução os seguintes agentes de controle Trichogramma atopovirilia e Encarsia formosa. E meta do Laboratório facilitar a introdução segura de agentes de controle biológico, de forma a beneficiar os trabalhos de controle biológico clássico conduzidos por instituições nacionais.Sessão de Posteres

    DMSO and Temperature Contributions to Synthesis of Silver Nano-Particles by the Bacterium Shewanella oneidensis

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    Nanomaterial are widely used in different areas such as optical device, drug delivery, chemicals, mechanics, magnetics, catalysis, energy science, Nano therapeutics and space industries depend on the special physical properties. However, most methods to produce nanoparticles are expensive or environmental unfriendly which can involve in toxic chemical. Another reason is that the nanoparticles from bio-based protocols are hydrophilic which is compatible with biological materials. In this project, we chose Shewanella oneidensis which is Gram-negative bacterium as the organism to produce sliver nanoparticles from sliver nitrate solution. The mechanism of bacterial of ion metal ion reduction to stable metal nanoparticles is unclear, but the NADH-dependent reeducates, quinines, and soluble electron-shuttles are thought to play an important role in metal reduction. This research focused on the temperature and DMSO affects the synthesis of silver nanoparticles by Shewanella Oneidensis. At various temperatures, the bio-activity of bacterium is different which can affect the silver nanoparticles reducing rate and the spherical size and nanoparticle geometry. DMSO is an aprotic, polar solvent which can penetrate skin and other membranes without damaging the cells. Due to this property of DMSO, DMSO was utilized as a co-solvent, which may change biosynthesis of silver nanoparticles. The synthesis processes were carried out at different temperatures and DMSO concentration and the nanoparticle formation monitored by using UV-vis spectrometer scans of the aqueous layer of reaction at 0 hr, 24 hr and 48 hr.https://ecommons.udayton.edu/stander_posters/1429/thumbnail.jp
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