Fixed Expressions
Mostrando 13-24 de 26 artigos, teses e dissertações.
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13. AvaliaÃÃo de dependabilidade de sistemas com mecanismos tolerantes a falha: desenvolvimento de um mÃtodo hÃbrido baseado em EDSPN e diagrama de blocos
In current days, we observe a vertiginous advance of technology and a larger dependence of the society on computational systems. A massive use of computerized devices, fixed and mobile, inside a concept of ubiquitous computation, and the increasing pervasiveness of computers and services networks, have been turning systems extremely complex and dynamic. This
Publicado em: 2007
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14. The naturalness in translation and fluency of a text / A naturalidade na tradução: quem garante?
This study was based on data collected from a parallel corpus composed of original texts in English of articles from National Geographic magazine, and their respective translations in Portuguese as published in National Geographic Brazil and the texts translated before their revision for publication. The aim was to compare the three texts in order to identif
Publicado em: 2007
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15. Exposição e reatividade do prematuro ao ruído intenso durante o cuidado em incubadora / The Preterm babiesexposition and reactivity at the intense noise during care in incubators.
Introduction: The sound levels found in incubators and the additional noise generated during the manipulation of them reveal that the preterm and high-risk newly born babies (RN) are exposed to a noisy environment and are kept for long periods in this environment without chance to have auditive rest. Objectives: To evaluate the exposition of premature babies
Publicado em: 2007
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16. Comparative study of the VEGF system temporal distribution in the bovine and canine placenta / Estudo comparativo da distribuição temporal do sistema VEGF na placenta de cães e de bovinos
The VEGF family is known to be responsible for the angiogenesis increasing blood vessels number and permeability in the endometrial/placentary interface. A comparative study of VEGF system temporal distribution in canine and bovine placentas, which present very well described differences in structure and function, will contribute to better define the role of
Publicado em: 2006
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17. EFFICIENT USE OF THE GEOESTATIONARY SATELLITE ORBIT: ORBITAL POSITION OPTIMIZATION / USO EFICIENTE DA ÓRBITA DE SATÉLITES GEOESTACIONÁRIOS: OTIMIZAÇÃO DAS POSIÇÕES ORBITAIS
This work is related to the efficient use of the geostationary satellite orbit. It presents and describes an optimization model which chooses the best orbital position for each satellite so that the length used orbital arc is minimized. A mathematical model considering aspects such as interference, geometry details (orbital position of the systems, earth sta
Publicado em: 2005
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18. Otimização de sistema conservante para suspensão oftálmica de dexametasona e polimixina B. / Optimization of preservative system in ophthalmic suspension with dexametasona e polymyxin B
One of the greatest challenges in pharmaceutical and cosmetic formulations consist of the development of adequate preservative systems. Whose optimized development was preposed for ophthalmic suspension of dexametasone and polymyxin B. This was performed threugh simplex-lattice method. The matrix of essay completed 17 formulas, from which independent variabl
Publicado em: 1998
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19. Energy barrier presented to ions by the vestibule of the biological membrane channel.
The role of the vestibule in influencing the permeation of ions through biological ion channels is investigated. We derive analytical expressions for the electric potential satisfying Poisson's equation with prolate spheroidal boundary conditions. To allow more realistic geometries we devise an iterative method to calculate the electric potential arising fro
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20. Selection Intensity for Codon Bias and the Effective Population Size of Escherichia Coli
The selection intensity for codon bias and the synonymous diversity have been used in the recent literature to estimate the effective population size of Escherichia coli. The results have varied between 10(5) and 10(8). It is suggested here that most of this disparity can be explained by a model that accounts for the population structure of the species. Thus
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21. Optimal Sequencing Strategies for Surveying Molecular Genetic Diversity
Two commonly used measures of genetic diversity for intraspecies DNA sequence data are based, respectively, on the number of segregating sites, and on the average number of pairwise nucleotide differences. Expressions are derived for their variance in the presence of intragenic recombination for a panmictic population of fixed size that is at neutral equilib
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22. Simple exact analysis of the standardised mortality ratio.
The standardised mortality ratio is the ratio of deaths observed, D, to those expected, E, on the basis of the mortality rates of some reference population. On the usual assumptions--that D was generated by a Poisson process and that E is based on such large numbers that it can be taken as without error--the long established, but apparently little known, lin
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23. Brownian dynamics simulations of supercoiled DNA with bent sequences.
The recently presented Brownian dynamics model for superhelical DNA is extended to include local curvature of the DNA helix axis. Here we analyze the effect of a permanent bend on the structure and dynamics of an 1870-bp superhelix with delta Lk = -10. Furthermore, we define quantitative expressions for computing structural parameters such as loop positions,
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24. A novel regulatory mechanism for whey acidic protein gene expression.
When primary mouse mammary epithelial cells (PMME) are cultured on a basement membrane type matrix, they undergo extensive morphogenesis leading to the formation of 3-dimensional alveoli-like spherical structures surrounding a closed lumen. We show for the first time that cells cultured on basement membrane-type matrix express high levels of whey acidic prot