Set Broadening
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Vegetal bioindicators of atmospheric pollution: a contribution to community health / "Bioindicadores vegetais de poluição atmosférica: uma contribuição para a saúde da comunidade"
Air quality in urban and industrial areas tends to present undesirable concentrations of contaminants, without the availability of a broad monitoring system, given the sophistication of conventional physical-chemical methods, which require high expenditure for implantation, operation and maintenance. These costs can be reduced by the adoption of the compleme
Publicado em: 2004
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14. Vacuum ultraviolet and visible spectroscopy diagnostics on the NOVA-UNICAMP tokamak
Three visible and one VUV spectrometers covering four toroidal positions have been set to study He and H plasma created by NOVA-UNICAMP tokamak. Ion temperatures have been measured at the beginning of the tokamak discharge by Doppler broadening of C, O and He lines. The time evolution of carbon line emissions, with different degrees of ionization, showed to
Braz. J. Phys.. Publicado em: 2001-09
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15. Tools for improvement: a systematic analysis and guide to accreditation by the JCAHO.
By viewing the Joint Commission on Accreditation of Healthcare Organizations' (JCAHO) standards in the context of current accreditation practice, hospital librarians can understand and clarify their role in realizing their organization's mission, goals, and objectives. By broadening their view of the information function as described in the accreditation sta
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16. Pulse confinement in optical fibers with random dispersion
Short-range correlated uniform noise in the dispersion coefficient, inherent in many types of optical fibers, broadens and eventually destroys all initially ultra-short pulses. However, under the constraint that the integral of the random component of the dispersion coefficient is set to zero (pinned), periodically or quasi-periodically along the fiber,
The National Academy of Sciences.
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17. Nature of structural inhomogeneities on folding a helix and their influence on spectral measurements
Extensive conformational sampling and calculations of vibrational coupling provide a quantitative basis for the structurally inhomogeneous spectra of the amide unit in aqueous solutions containing folded and unfolded state distributions of helices. Replica exchange molecular dynamics simulations of the capped helical peptide, AA(AAKAA)3AAY, is carried out ov
National Academy of Sciences.
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18. RNA expression microarrays (REMs), a high-throughput method to measure differences in gene expression in diverse biological samples
We have developed RNA expression microarrays (REMs), in which each spot on a glass support is composed of a population of cDNAs synthesized from a cell or tissue sample. We used simultaneous hybridization with test and reference (housekeeping) genes to calculate an expression ratio based on normalization with the endogenous reference gene. A test REM contain
Oxford University Press.
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19. Divalent metal ion binding to a conserved wobble pair defining the upstream site of cleavage of group I self-splicing introns.
The upstream site of cleavage of all group I self-splicing introns is identified by an absolutely conserved U.G base pair. Although a wobble C.A pair can substitute the U.G pair, all other combinations of nucleotides at this position abolish splicing, suggesting that it is an unusual RNA structure, rather than sequence, that is recognized by the catalytic in
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20. Three pathways of Epstein-Barr virus gene activation from EBNA1-positive latency in B lymphocytes.
Previous studies on Epstein-Barr virus (EBV)-positive B-cell lines have identified two distinct forms of virus latency. Lymphoblastoid cell lines generated by virus-induced transformation of normal B cells in vitro, express the full spectrum of six EBNAs and three latent membrane proteins (LMP1, LMP2A, and LMP2B); furthermore, these lines often contain a sma