567 research outputs found

    Revitalização do Herbário "CNPO" da Embrapa Pecuária Sul, Bagé, RS.

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    bitstream/item/31955/1/DT-101online.pd

    Conservação on farm de plantas forrageiras.

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    Ações de conservação in situ/on farm associadas a métodos participativos; Algumas considerações sobre a conservação de espécies forrageiras em campo nativo; Descrição do processo on farm para a conservação de plantas forrageiras nativas do Bioma Pampa.bitstream/item/64213/1/DT91.pd

    Tolerância ao alumínio em plantas.

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    Relações do alumínio com outros elementos químicos; Efeitos do alumínio em níveis tóxicos em plantas; Tolerância ao alumínio em plantas; Mecanismos de tolerância à toxicidade do Al3+; Relação entre tolerância ao alumínio e estabilidade cromossômica; Herança da tolerância à toxicidade do alumínio; Métodos de avaliação para tolerância ao alumínio.bitstream/item/64202/1/DT94.pd

    Surface Metrology Based on Scanning Conoscopic Holography for In Situ and In-Process Monitoring of Microtexture in Paintings

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    In the field of engineering, surface metrology is a valuable tool codified by international standards that enables the quantitative study of small-scale surface features. However, it is not recognized as a resource in the field of cultural heritage. Motivated by this fact, in this work, we demonstrate the use and the usefulness of surface metrology based on scanning conoscopic holography for monitoring treatments on the Venetian masterpiece by Tintoretto St. Martial in Glory with the Saints Peter and Paul. We carried out in situ and in-process monitoring of the painting microtexture during an experimental, innovative laser–chemical treatment, and we performed a statistical analysis based on ISO areal field parameters. A wide and in-band roughness analysis through the complementary use of amplitude, spatial, and hybrid parameters confirmed the noninvasive nature of the whole treatment on the painting surface topography, giving us the chance to review and critically discuss the use of these parameters in a real case in heritage science

    Tipos nomenclaturais e principais famílias do Herbário CNPO da Embrapa Pecuária Sul.

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    Conceitos Nomenclaturais; Tipos de Tipos Nomenclaturais; Holótipo; Lectótipo; Neótipo; Isótipo; Síntipo; Parátipo; Topótipobitstream/item/56603/1/DT116.pd

    Peptide-Based Inhibitors of ADAM and ADAMTS Metalloproteinases

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    ADAM and ADAMTS are two large metalloproteinase families involved in numerous physiological processes, such as shedding of cell-surface protein ectodomains and extra-cellular matrix remodelling. Aberrant expression or dysregulation of ADAMs and ADAMTSs activity has been linked to several pathologies including cancer, inflammatory, neurodegenerative and cardiovascular diseases. Inhibition of ADAM and ADAMTS metalloproteinases have been attempted using various small molecules and protein-based therapeutics, each with their advantages and disadvantages. While most of these molecular formats have already been described in detail elsewhere, this mini review focuses solely on peptide-based inhibitors, an emerging class of therapeutic molecules recently applied against some ADAM and ADAMTS members. We describe both linear and cyclic peptide-based inhibitors which have been developed using different approaches ranging from traditional medicinal chemistry and rational design strategies to novel combinatorial peptide-display technologies

    Focus-stacking system for 3D acquisition of sculptures and archaeological manufacts

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    In this paper we present the basic features of the Shape from Focus techniques and discuss the potentiality of its application in the 3D imaging of small sculptures and archaeological manufacts. A scanning system for optimizing the image stack acquisition in laboratory was assembled, while 3D reconstruction was done in ImageJ
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