Strong Discontinuities
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Does the widely distributed rodent Calomys tener (Cricetidae: Sigmodontinae) constitute a single evolutionary unit?
ABSTRACT The nominal species Calomys tener (Winge, 1887) ranges broadly in open lands of the Caatinga, Cerrado, Pantanal and Mata Atlântica of Brazil, and was recently reported from the Pampas of southern Brazil, and in the Selva Paranaense of eastern Paraguay and northeastern Argentina. This rodent can be infected with the pathogenic Araraquara hantavirus
Zoologia (Curitiba). Publicado em: 06/06/2019
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2. Further Development and Application of High-Order Spectral Volume Methods for Compressible Flows
Abstract: The present paper investigates the high-order spectral finite volume method with emphasis on applicability aspects for compressible flows. The intent is to improve the understanding and implementation of numerical techniques related to high-order unstructured grid schemes. In that regard, a hierarchical moment limiter and high-order mesh capability
J. Aerosp. Technol. Manag.. Publicado em: 20/07/2017
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3. Análise de propagação arbitrária de descontinuidades fortes em sólidos bidimensionais pelo método dos elementos de contorno / Analysis of arbitrary propagation of strong discontinuities in bidimensional solids using the boundary elements method
O trabalho tem como objetivo trazer contribuições à simulação numérica pelo método dos elementos de contorno (MEC) de formação e propagação de descontinuidades no campo de deslocamentos (descontinuidades fortes) em sólidos bidimensionais. A formação de descontinuidades fortes caracteriza o processo de falha material, que pode estar associado ao
Publicado em: 2008
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4. Onda jovem, mercado de trabalho e violencia : um enfoque demografico
The thesis deals with demographic discontinuities in Brazil, their consequences on the configuration of the so-called young waves, and the issue of increasing violence amongst young people, especially in the large metropolitan centers. Observation of the census data as from the Forties enabled the presence of demographic discontinuities to be detected by coh
Publicado em: 2004
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5. A Genetic Discontinuity in a Continuously Distributed Species: Mitochondrial DNA in the American Oyster, Crassostrea Virginica
Restriction site variation in mitochondrial DNA (mtDNA) of the American oyster (Crassostrea virginica) was surveyed in continuously distributed populations sampled from the Gulf of St. Lawrence, Canada, to Brownsville, Texas. mtDNA clonal diversity was high, with 82 different haplotypes revealed among 212 oysters with 13 endonucleases. The mtDNA clones group
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6. Rotational motion and evidence for oligomeric structures of sarcoplasmic reticulum Ca2+-activated ATPase.
The rotational motion of the sarcoplasmic reticulum Ca2+-activated ATPase (ATP phosphohydrolase, EC 3.6.1.3) has been investigated by measuring the decay of laser flash-induced dichroism with the covalently attached triplet probe eosin isothiocyanate. The Arrhenius plot for rotational mobility indicates two discontinuities at approximately 15 degrees C and a
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7. Flightless brown kiwis of New Zealand possess extremely subdivided population structure and cryptic species like small mammals.
Using allozymes and mtDNA sequences from the cytochrome b gene, we report that the brown kiwi has the highest levels of genetic structuring observed in birds. Moreover, the mtDNA sequences are, with two minor exceptions, diagnostic genetic markers for each population investigated, even though they are among the more slowly evolving coding regions in this gen
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8. Molecular Zoogeography of Freshwater Fishes in the Southeastern United States
Restriction fragment length polymorphisms in mitochondrial DNA (mtDNA) were used to reconstruct evolutionary relationships of conspecific populations in four species of freshwater fish—Amia calva, Lepomis punctatus, L. gulosus, and L. microlophus. A suite of 14-17 endonucleases was employed to assay mtDNAs from 305 specimens collected from 14 river drainag
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9. Presence of two distinct regions in the coiled-coil structure of the streptococcal Pep M5 protein: relationship to mammalian coiled-coil proteins and implications to its biological properties.
The complete amino acid sequence of Pep M5, a biologically active 197-residue fragment comprising nearly half of the group A streptococcal M5 protein, has structural features characteristic of an alpha-helical coiled-coil protein. Fourier analyses of the nonpolar residues show strong periodicities based on repeats of 7 residues (7/2 and 7/3). Except for the
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10. Discontinuities in the DNA synthesized by an avian retrovirus.
The unintegrated linear DNA synthesized in cells infected by Rous sarcoma virus is a predominantly double-stranded structure in which most of the minus-strand DNA, complementary to the viral RNA genome, is genome sized, whereas the plus-strand DNA is present as subgenomic fragments. We previously reported the application of benzoylated naphthoylated DEAE-cel