Bounded Plasma
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Análise da estabilidade do diodo Pierce com efeitos térmicos
Neste trabalho, analisarei a estabilidade do diodo Pierce como função dos parâmetros pertinentes ao sistema no caso de um feixe frio (temperatura zero), de um feixe isotérmico e de um feixe adiabático. O diodo Pierce clássico é um sistema unidimensional que consiste em um plasma limitado entre duas placas paralelas aterradas, com densidade iônica no
Publicado em: 2011
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2. Proteomic analysis of the shistosome tegument and its surface membranes
The tegument surface of the adult schistosome, bounded by a normal plasma membrane overlain by a secreted membranocalyx, holds the key to understanding how schistosomes evade host immune responses. Recent advances in mass spectrometry (MS), and the sequencing of the Schistosoma mansoni transcriptome/genome, have facilitated schistosome proteomics. We detache
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-10
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3. Beam transport in a quadrupole electrostatic system
Electron beam transport through a quadrupole electrostatic system is investigated by particle-in-cell simulation in the present work, where - at the advantage of easier experimental implementation - the analogous parabolic electrostatic potential replaces the usual neutralizing ion background of bounded plasma systems. Looking at the maximum transported curr
Brazilian Journal of Physics. Publicado em: 2004-12
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4. THE CURRENT INDUCED BY A MAGNETIC FIELD IN A PHYSICALLY BOUNDED PLASMA
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5. Role of the Cell Surface of Methanosarcina mazei in Cell Aggregation †
Colonial aggregates of Methanosarcina (= Methanococcus) mazei were examined with scanning and transmission electron microscopy. Cells are irregular and grouped into multicellular sarcinal colonies, which may disaggregate in older cultures. The protoplast is bounded by a typical trilaminar plasma membrane, outside of which is a matrix of loose fibrils. The pr
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6. Syncytial channels in the villous trophoblast of the macaque.
The villous syncytium of the placenta of the macaque was found to contain channel-like formations bounded by syncytial membrane. They were present in placental specimens obtained from rhesus monkeys at periods of gestation varying from 90 to 164 days and were identifiable only by electron microscopy. These syncytial channels communicated with the intervillou
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7. Receptor-mediated endocytosis of insulin: role of microvilli, coated pits, and coated vesicles.
When 125I-labeled insulin (125I-insulin) is incubated with 3T3-L1 adipocytes and cells processed for electron microscopic autoradiography, the ligand initially localizes preferentially to microvilli and coated pits. As a function of time and temperature, this initial preferential localization to microvilli is lost, and the ligand is internalized by the cell.
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8. Cell membrane formation during the cellularization of the syncytial blastoderm of Drosophila.
The early blastoderm of Drosophila is a syncytium in which about 6000 nuclei become localized in the peripheral cytoplasm. During cycle 14 interphase, a wave of membrane formation encircles each nucleus inside its own plasma membrane, thereby generating an intact epithelial layer. The details of this process of cellularization have been unclear. Using an imp
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9. Freeze-Etching of the Cell Envelope of an Acinetobacter Species Which Carries a Regular Array of Surface Subunits
Freeze-etching was applied to preparations, with and without glycerol, of Acinetobacter sp. strain MJT/F5/199A, consisting of intact cells after normal growth or after incubation with chloramphenicol, spheroplasts, and isolated cell walls and outer membranes. Etched preparations show that a regular array of subunits forms the surface of normal cells. Near th
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10. Resinless section electron microscopy reveals the yeast cytoskeleton
The cytoskeleton of Saccharomyces cerevisiae is essentially invisible using conventional microscopy techniques. A similar problem was solved for the mammalian cell cytoskeleton using resinless section electron microscopy, a technique applied here to yeast. In the resinless image, soluble proteins are no longer cloaked by embedding medium and must be removed
The National Academy of Sciences of the USA.
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11. L-Forms of Pseudomonas aeruginosa
L-forms of a strain of Pseudomonas aeruginosa were produced by serial subculture of the bacterial form on agar medium containing sucrose as an osmotic stabilizer and carbenicillin. L-forms eventually became stable, i.e., would not revert in the absence of antibiotic, and were adapted to grow well in broth with the osmotic stabilizer. Gross morphology and lig