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Mostrando 13-24 de 66 artigos, teses e dissertações.
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13. MEAT PRODUCTION WITH POLWARTH AND POLWARTH X BORDER LEICESTER CROSSBRED LAMBS ON SUPPLEMENTED NATURAL PASTURE AND CULTIVED PASTURE WITH OR WITHOUT SUPPLEMENTATION / PRODUÇÃO DE CARNE DE CORDEIROS DA RAÇA IDEAL E CRUZAS IDEAL X BORDER LEICESTER TERMINADOS EM CAMPO NATURAL SUPLEMENTADO E PASTAGEM CULTIVADA COM OU SEM SUPLEMENTAÇÃO
The objectives of this work were to verify the feeding systems and genotype effect on Polwarth and Polwarth x Border Leicester crossbred lambs performance and carcass characteristics. The experiment was carried out in two times: on the first, before slaughter, were estimated the pasture and animal characteristics; and the second, after slaughter, were estima
Publicado em: 2004
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14. Further analysis of open-respirometry systems: an a-compartmental mechanistic approach
A system is said to be "instantaneous" when for a given constant input an equilibrium output is obtained after a while. In the meantime, the output is changing from its initial value towards the equilibrium one. This is the transient period of the system and transients are important features of open-respirometry systems. During transients, one cannot compute
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-08
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15. Perdas colisionais devido ao processo de mudança de estrutura fina em uma armadilha magneto-óptica de rubídio / Fine structure changing collisional losses in a rubidium magneto-optical trap
We report the observation of trap-loss collisional rates due to fine structure changing collisions between cold and trapped 85Rb atoms. We have measured, by photoionization of the atomic fragments in 5P1/2 state originated in these collisions, the rates through the atoms leave the trap induced by this loss mechanism. We carried out experiments to determine t
Publicado em: 1999
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16. Pregnancy related sickness absence in a Swedish county, 1985-87.
Sickness absence during pregnancy has increased in Sweden as well as in other countries. STUDY OBJECTIVE--The study aimed to describe pregnancy related sickness absence and its increase from 1985-87; to consider if the increase were parallel to an increase in sickness absence for all diagnoses or could be explained by a higher birth rate; and to compare diff
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17. Birth rate drops when obstetricians leave town
BMJ Publishing Group Ltd..
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18. The ADF/cofilin family: actin-remodeling proteins
The ADF/cofilins are a family of actin-binding proteins that remodel the actin cytoskeleton, for example during cytokinesis, by severing actin filaments and also increasing the rate at which monomers leave the filament's pointed end. Plants and animals have multiple ADF/cofilin genes and other eukaryotes have a single ADF/cofilin gene.
BioMed Central.
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19. Morbidity survey of post mortem room staff.
A retrospective study of post mortem staff who had taken leave due to sickness was carried out over a 12 month period throughout England and Wales. Eight hundred and nineteen post mortem room personnel (representing a 57% response) replied to individual postal questionnaires regarding their sick leave of two days or more, for the period June 1985 to June 198
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20. Intermediates can accelerate protein folding
The effect of intermediates on the rate of protein folding is explored by applying Kramers’ theory of diffusive barrier crossing in the high friction limit. Intermediates are represented as local minima in the transition barrier. We observe that very large or very small additional barriers created by the intermediates slow down the folding process. The rat
The National Academy of Sciences.
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21. Mobility of diesel versus non-diesel coal miners: some evidence on the healthy worker effect.
Workers who are particularly susceptible to the effects of their occupational exposure, from the perspective of the healthy worker effect, soon leave the workplace. The result of this mobility, called survival bias, is that cross sectional studies based on the survivors underestimate the true risk of occupational exposures. Two questions are addressed in thi
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22. Gastroenteritis: a waterborne outbreak affecting 1600 people in a small Danish town.
STUDY OBJECTIVE--To examine (i) the extent of illness caused by contamination of a waterworks with waste water due to overflow, and its correlation with precipitation; (ii) the potential secondary spread; (iii) economic losses due to sick leave. DESIGN--A historical follow up study with structured postal questionnaires. SETTING--A small community on the outs
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23. Neuromuscular transmission in myasthenia gravis studied with single fibre electromyography 1
Patients with myasthenia gravis have been investigated with single fibre electromyography. In all myasthenic muscles recordings were obtained where there was an increase of the jitter and occasional blocking of different degree of single fibre action potentials. The jitter is the variability at consecutive discharges in the time interval between action poten
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24. Alternative to the steady-state method: derivation of reaction rates from first-passage times and pathway probabilities.
An alternative method for deriving rate equations in enzyme kinetics is presented. An enzyme is followed as it moves along the various pathways allowed by the reaction scheme. The times spent in various sections of the scheme and the pathway probabilities are computed, using simple rules. The rate equation obtains as a function of times and probabilities. Th