Electronic Labeling
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Arterial spin labeling in patients with schizophrenia: a systematic review
Abstract Background: Neuroimaging studies are an invaluable source of information about the physiopathology of schizophrenia. Arterial spin labeling (ASL) is a new magnetic resonance technique (MRI) that is able to effectively evaluate brain function without the use of radiation. Objective: To make a systematic review of studies using ASL to compare restin
Arch. Clin. Psychiatry (São Paulo). Publicado em: 2016-12
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2. Perspectiva do consumidor perante produto proveniente da cadeia produtiva de tilápia do Nilo rastreada (Oreochromis niloticus) consumo de pescado e qualidade de vida / Consumer perspective towards product coming from productive tilapia chain traceability from Nile (Oreochromis niloticus) fish consumption and quality of life
O sistema de rastreabilidade possibilita a localização do alimento em todos os elos da cadeia produtiva desde a matéria-prima até o varejo; pode prover informações da natureza, origem e qualidade do alimento; permite ao consumidor decidir, conscientemente, sobre a compra dos produtos, e permite ao produtor e à indústria, o retorno a um procedimento o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/04/2011
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3. Estudos da dinâmica estrutural da proteína ligante de cálcio S100A12 humana e da lisozima T4 / Structural dynamics studies of human calcium binding protein S100A12 and T4 lysozyme
The work presented here was conceived with two main objectives. The first one, more general, involved the implementation of a new methodology for the study of conformational changes in proteins, i.e., its structural dynamics. The technique of Site-directed Spin Labeling combined with Electronic Paramagnetic Resonance (SDSL-EPR) are the pillars of this new me
Publicado em: 2011
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4. Síntese e estudo das propriedades ópticas e magnéticas de pontos quânticos de Pb1-xMnxS crescidos em matrizes vítreas
In this Thesis PbS and Pb1-xMnxS quantum dots (nanocrystals), hosted in glass matrix, were synthesized and characterized. Optical absorption (OA), Electron Paramagnetic Resonance (EPR) and Magnetization curves (SQUID) were used to characterize the as-prepared nanocrystals. Within the range of 0.41 eV (gap of bulk PbS) to 3.5 eV (gap of bulk MnS) the OA bands
Publicado em: 2008
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5. Studies of temperature-dependent electronic transduction on DNA hairpin loop sensor
A self-assembly monolayer (SAM) of hairpin DNA can be formed on a gold substrate in order to make special biosensors. Labeling the hairpin loop probes with electroactive compositions rather than a fluorophore illustrates interesting profiles of redox current versus temperature. For a biosensor interacting with perfectly complementary targets, the profile sho
Oxford University Press.
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6. Demonstration That Antigen-Binding Cells Are Precursors of Antibody-Producing Cells After Purification with a Fluorescence-Activated Cell Sorter
We have obtained viable and functional populations of antigen-binding cells enriched up to 500-fold from primed spleen-cell suspensions by fluorescent labeling and by a new electronic cell sorter that sorts viable cells according to fluorescence. Concomitantly, populations largely depleted of antigen-binding cells were obtained. While neither population alon
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7. Direct detection of antibody–antigen binding using an on-chip artificial pore
We demonstrate a rapid and highly sensitive all-electronic technique based on the resistive pulse method of particle sizing with a pore to detect the binding of unlabeled antibodies to the surface of latex colloids. Here, we use an on-chip pore to sense colloids derivatized with streptavidin and measure accurately their diameter increase on specific binding
The National Academy of Sciences.
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8. Luminescence energy transfer using a terbium chelate: improvements on fluorescence energy transfer.
We extend the technique of fluorescence resonance energy transfer (FRET) by introducing a luminescent terbium chelate as a donor and an organic dye, tetramethylrhodamine, as an acceptor. The results are consistent with a Förster theory of energy transfer, provided the appropriate parameters are used. The use of lanthanide donors, in general, and this pair,
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9. A [Cu2O]2+ core in Cu-ZSM-5, the active site in the oxidation of methane to methanol
Driven by the depletion of crude oil, the direct oxidation of methane to methanol has been of considerable interest. Promising low-temperature activity of an oxygen-activated zeolite, Cu-ZSM-5, has recently been reported in this selective oxidation and the active site in this reaction correlates with an absorption feature at 22,700 cm−1. In the present stu
National Academy of Sciences.
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10. Mechanism and energetics of green fluorescent protein chromophore synthesis revealed by trapped intermediate structures
Green fluorescent protein has revolutionized cell labeling and molecular tagging, yet the driving force and mechanism for its spontaneous fluorophore synthesis are not established. Here we discover mutations that substantially slow the rate but not the yield of this posttranslational modification, determine structures of the trapped precyclization intermedia
National Academy of Sciences.
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11. Demonstration of low density lipoprotein receptors in mouse teratocarcinoma stem cells and description of a method for producing receptor-deficient mutant mice
Familial hypercholesterolemia, a widespread human genetic disorder implicated in vascular and coronary disease, has had no laboratory animal counterpart that would enable the pathogenesis to be analyzed and drugs to be tested in vivo. The primary lesion in some patients is known to occur in the cells' initial handling of the major cholesterol-carrying lipopr