Cut Frequencies
Mostrando 13-24 de 48 artigos, teses e dissertações.
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13. HLA-DRB1 alleles in four Amerindian populations from Argentina and Paraguay
The major histocompatibility complex (MHC) is one of the biological systems of major polymorphisms. The study of HLA class II variability has allowed the identification of several alleles that are characteristic to Amerindian populations, and it is an excellent tool to define the relations and biological affinities among them. In this work, we analyzed the a
Genetics and Molecular Biology. Publicado em: 2009
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14. ESPECTROS DE TURBULÊNCIA EM TERRENO COMPLEXO
Throughout this paper a spectral analysis is conducted on the superficial limit layer in complex terrains. The data used were collected in the central part of the state of Rio Grande do Sul, in the Valley of Jacuí River. A 15-meter tower, with fast-response sensors and slowresponse ones, collected data at frequencies of 10 Hz and 1 Hz, in July and August 20
Publicado em: 2008
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15. Características morfogênicas e estruturais e acúmulo de forragem do capim-tanzânia submetido a intensidades e freqüências de corte / Morpho-structural characteristics and forage accumulation of Tanzania grass subjected to different cutting intensities and frequencies
The experiment was conducted in an area of the Animal Science Department, at the Federal University of Viçosa - UFV, MG, from 17/12/2004 to 08/04/2005, with the objective of evaluating morpho-structural characteristics and forage accumulation of Panicum maximum cv. Tanzania under different cutting intensities and frequencies. Two heights (25 and 50 cm) and
Publicado em: 2007
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16. Evaluation of cutting forces and prediction of chatter vibrations in milling
The prediction of chatter vibrations between the cutter and workpiece is important as a guidance to the machine tool user for an optimal selection of depth of cut and spindle rotation, resulting in maximum chip removal rate without this undesirable vibration. This can be done by some approaches. In this work, an analytical method is applied in which the time
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-03
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17. Analysis of the Prevalence of Ventricular Late Potentials in the Late Phase of Myocardial Infarction Based on the Site of Infarction
OBJECTIVE: The initial site of myocardial infarction (MI) may influence the prevalence of ventricular late potentials (VLP), high-frequency signals, due to the time course of ventricular activation. The prevalence of VLP in a period of more than 2 years after acute MI was assessed focusing on the initially injured wall . METHODS: The prevalence of VLP in a l
Arquivos Brasileiros de Cardiologia. Publicado em: 2002-04
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18. Evaluation of pulmonary function in amyotrophic lateral sclerosis holders through forced vital capacityin the seated and supine position / Avaliação da função pulmonar em pacientes portadores de esclerose lateral amiotrofica por meio da capacidade vital forçada, na posição sentada e supina
Amyotrophic lateral sclerosis ( ALS ) is a progressive fatal neurodegenerative disorder of unknown origin, characterized by degeneration of espinal motor neurons, motor nuclei of the lower brain stem and upper neurons of the motor cortex. Eventually these lesions may produce respiratory failure. The aim of this study was to assess the variations of the measu
Publicado em: 2001
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19. Spatial contrast sensitivity and the diagnosis of amblyopia.
The relationship was studied between spatial contrast sensitivity function and type of pathology of the visual system. Two characteristics were found to be typical for amblyopia: there is a discrepancy between the high-frequency cut-off ('grating acuity') and the Snellen acuity; the contrast sensitivity is strongly dependent on the width of the stimulus. In
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20. Estimation of genetic variation at the DNA level from restriction endonuclease data.
We consider the estimation of the genetic variation in a natural population when the data are obtained by the use of restriction endonucleases. Under the restriction endonuclease technique, a particular DNA segment is considered and cut wherever a recognition sequence appropriate to the endonuclease occurs. We consider data generated when a random sample of
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21. Nerve-mediated contractions of sheep mesenteric lymph node capsules.
1. Isometric tension was recorded in vitro from strips cut from the capsules of mesenteric lymph nodes of sheep. 2. One minute periods of field stimulation at frequencies of 1, 2, 4, 8 and 16 Hz (pulse duration, 0.3 ms) elicited tonic contractions of increasing force and duration. The stimulus frequency-response relationship began to flatten out at frequenci
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22. Mono- through hexanucleotide composition of the sense strand of yeast DNA: a Markov chain analysis.
Here we compare several methods for predicting oligonucleotide frequencies in 392 kb of yeast DNA. As in previous work on E. coli, a relatively simple equation based on tetranucleotide frequencies can be used in predicting the frequencies of longer oligonucleotides. For example, the mean of observed/expected abundances of 4,096 hexamers was 1.00 with a sampl
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23. Mediation by nitric oxide of neurogenic relaxation of the urinary bladder neck muscle in sheep.
1. Mechanical recordings were made in vitro from circularly oriented strips of the bladder neck muscle of sheep. In the absence of drugs, electrical field stimulation at frequencies of 0.2-1 Hz evoked clear-cut relaxations throughout 1 min stimulation periods, while higher stimulus frequencies (2-8 Hz) evoked variable responses consisting of relaxation, cont
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24. The application of Markov chain analysis to oligonucleotide frequency prediction and physical mapping of Drosophila melanogaster.
Here we compare several methods for predicting oligonucleotide frequencies in 691 kb of Drosophila melanogaster DNA. As in previous work on Escherichia coli and Saccharomyces cerevisiae, a relatively simple equation based on tetranucleotide frequencies can be used in predicting frequencies of higher order oligonucleotides. For example, the mean of observed/e