Non Periodic Signal
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. The use of cardiotocography as a method of diagnosis of the occurrence of fetal distress (fetal hypoxia) during intrauterine life in fetuses of Nellore generated through the technique of somatic adult cell nuclear transfer - Cloning / O uso da cardiotocografia como método de diagnóstico da ocorrência de sofrimento fetal (hipóxia fetal) durante a vida intrauterina de fetos da raça Nelore originados por meio da técnica de transferência nuclear de células somáticas adultas - Clonagem
This research had the purpose to standardize the technique of cardiotocography to be used to assess the presence of hypoxia / fetal distress during intrauterine life, trying to establish from the 7th month of pregnancy the normal range of fetal heart rate in healthy fetuses and from artificial insemination and cloning to evaluate the influence of the paramet
Publicado em: 2009
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2. Bi-estabilidade óptica &condensação de Bose-Einstein de polaritons
Optical bistability e®ects (OB) are intrinsically related to the gain media non-linearities. In microcavities, this behavior is due to Kerr effect proportionate by polariton number, generated resonantly in strong -coupling regime, instead of the photon number. The sample was held in a cold-finger cryostat at a temperature of 10K and is constituted by two DB
Publicado em: 2008
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3. Um Novo Método de Geração de Sinais Complexos / A new method for wave form generation
In this work new applications in digital systems, encryption systems, data transmission, etc., through a new mathematical approach are described. This work presents some new important DNAx technique contributions to mathematics, physics and engineering fields. First of all the DNAx equations are defined and applied to definition of Delta of Dirac function, U
Publicado em: 2006
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4. Análise das oscilações intrasazonais sobre a América do Sul e oceanos adjacentes utilizando a análise de ondeletas / Analysis of oscillations intraseasonal the south america and adjacent oceans using the wavelet analysis
Este trabalho enfoca a variabilidade atmosférica intrasazonal de radiação de onda longa emergente (ROLE), de pressão ao nível mar (PNM) e de vorticidade relativa em 250 hPa (VORT250) sobre a América do Sul e oceanos adjacentes para o período de 1979 a 1996. Para isso foram utilizados os dados gerados pelo NCEP/NCAR e foi aplicado o método da transfor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200212
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5. Análise das oscilações intrasazonais sobre a América do Sul e oceanos adjacentes utilizando a análise de ondeletas / Analysis of oscillations intraseasonal the south america and adjacent oceans using the wavelet analysis
Este trabalho enfoca a variabilidade atmosférica intrasazonal de radiação de onda longa emergente (ROLE), de pressão ao nível mar (PNM) e de vorticidade relativa em 250 hPa (VORT250) sobre a América do Sul e oceanos adjacentes para o período de 1979 a 1996. Para isso foram utilizados os dados gerados pelo NCEP/NCAR e foi aplicado o método da transfor
Publicado em: 2002
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6. Subsistemas opticos para comunicação solitonica
This work invesligates oplical subsystems that can be used in solitonic communications. Several numerical simulations are presented, using the Mathemalica® programming language. Inilially, the non-linear oplical pulse propagalion is analyzed, using thefinite difference lime domain (FDTD) method. A pair of non-linear Schrõdinger equalions is solved simultan
Publicado em: 1996
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7. Heart rate and respiratory rhythm dynamics on ascent to high altitude.
OBJECTIVE--To investigate the alterations in autonomic control of heart rate at high altitude and to test the hypothesis that hypoxaemic stress during exposure to high altitude induces non-linear, periodic heart rate oscillations, similar to those seen in heart failure and the sleep apnoea syndrome. SUBJECTS--11 healthy subjects aged 24-64. MAIN OUTCOME MEAS
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8. A signal encoded in vertebrate DNA that influences nucleosome positioning and alignment.
Evidence is provided that the nucleotide triplet con-sensus non-T(A/T)G (abbreviated to VWG) influences nucleosome positioning and nucleosome alignment into regular arrays. This triplet consensus has been recently found to exhibit a fairly strong 10 bp periodicity in human DNA, implicating it in anisotropic DNA bendability. It is demonstrated that the experi
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9. Long-range oscillation in a periodic DNA sequence motif may influence nucleosome array formation
We have experimentally examined the characteristics of nucleosome array formation in different regions of mouse liver chromatin, and have computationally analyzed the corresponding genomic DNA sequences. We have shown that the mouse adenosine deaminase (MADA) gene locus is packaged into an exceptionally regular nucleosome array with a shortened repeat, consi
Oxford University Press.
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10. Toward a detailed computational model for the mammalian circadian clock
We present a computational model for the mammalian circadian clock based on the intertwined positive and negative regulatory loops involving the Per, Cry, Bmal1, Clock, and Rev-Erb α genes. In agreement with experimental observations, the model can give rise to sustained circadian oscillations in continuous darkness, characterized by an antiphase relat
National Academy of Sciences.