Microcells
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Síntese e caracterização de poliuretano à base de óleo de Mabea fistulifera Mart. e sua utilização para remoção de corantes têxteis / Synthesis and characterization of Mabea fistulifera Mart. oil based polyurethane its use for textile dyes removal
Hard polyurethane polymers (PU-1, PU-2, PU-3 and PU-4) were developed in this study, obtained from polyols derived from Mabea fistulifera Mart oil. The chemical modification of the oil occurred through an in situ hydroxylation reaction employing acetic acid, hydrogen peroxide and sulfuric acid. The reaction conditions were optimized using a factorial composi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2011
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2. Construção e caracterização de micro-células voltamétricas para análises em volumes reduzidos / Construction and characterization of voltammetric micro-cells to analyses in reduced volumes
Neste trabalho é apresentada a construção e a caracterização de microcélulas voltamétricas alternativas para a análise em volumes reduzidos. Dois arranjos de eletrodos são propostos: em um, os três eletrodos se encontram na extremidade de ponteiras e no outro, no interior de microcanais (camada delgada). Para as suas construções foram utilizados
Publicado em: 2009
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3. PREDIÇÃO DE COBERTURA PARA O INTERIOR DAS EDIFICAÇÕES COM TRANSMISSORES EM AMBIENTES MICROCELULARES / RADIO SIGNAL PREDICTIONS FOR INDOOR LOCATIONS WITH TRANSMITTER IN MICROCELLULAR ENVIRONMENT
Neste trabalho, um - software - foi desenvolvido para prover predições do sinal em ambientes exteriores e interiores. O programa inclui dois diferentes modelos de propagação. Para situações urbanas com antenas baixas (Microcélulas) e para situações urbanas onde o receptor pode ser posicionado numa área - indoor - e o transmissor numa área urbana (
Publicado em: 2003
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4. Microcell-mediated transfer of murine chromosomes into mouse, Chinese hamster, and human somatic cells.
In this report, we describe the production and characterization of proliferating hybrid cell populations generated by fusion of murine microcells with intact mouse, Chinese hamster, and human recipient cells. The microcell hybrids so produced contained one to five intact murine chromosomes derived from the microcell donor. these transferred chromosomes were
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5. Tissue-specific expression of the rat albumin gene: genetic control of its extinction in microcell hybrids.
Numerous studies of cell hybrids have indicated that somatic cells produce negative regulators (extinguishers) that prevent the expression of functions foreign to their own differentiation. Here, we report genetic evidence of such control. In microcell hybrids between well-differentiated rat hepatoma cells and microcells of mouse fibroblast L cells, the exti
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6. Genetic manipulation by means of microcell-mediated transfer of normal human chromosomes into recipient mouse cells.
Microcell-mediated chromosome transfer is an innovative approach to the production of karyotypically simple hybrids. This method of gene transfer, employing micronuclei formed by prolonged Colcemid treatment, has been utilized for rodent systems. Expansion of this technology to include transfer of normal human genetic material has been hindered because large
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7. Plasma binding and transport of diazepam across the blood-brain barrier. No evidence for in vivo enhanced dissociation.
The tissue uptake of extensively plasma-bound compounds is reportedly inconsistent with the conventional free-drug hypothesis limiting transport to unbound moiety in rapid intracapillary equilibrium with bound complex. Instead, protein-mediated/cell surface enhancement of dissociation has been postulated to occur in the microvasculature. This possibility was
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8. Microcell-mediated cotransfer of genes specifying methotrexate resistance, emetine sensitivity, and chromate sensitivity with Chinese hamster chromosome 2.
Many selectable mutants of somatic Chinese hamster cells have been described, but very few of the mutations have been mapped to specific chromosomes. We have utilized the microcell-mediated gene transfer technique to establish the location of three selectable genetic markers on chromosome 2 of Chinese hamster. Microcells were prepared from the methotrexate-r
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9. Construction of microcell hybrid clones containing specific mouse chromosomes: application to autosomes 8 and 17.
Fibroblast cultures prepared from mice homozygous for a Robertsonian translocation (centric fusion) between autosomes 8 and 17 [Rb(8.17)] were used as donors in microcell-mediated chromosome transfer experiments. By using hamster recipient cells deficient in adenine phosphoribosyltransferase (APRT-) and selecting for expression of murine APRT (a chromosome 8