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Mostrando 13-18 de 18 artigos, teses e dissertações.
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13. Deriving dispersal distances from genetic data.
Dispersal is one of the most important factors determining the genetic structure of a population, but good data on dispersal distances are rare because it is difficult to observe a large sample of dispersal events. However, genetic data contain unbiased information about the average dispersal distances in species with a strong sex bias in their dispersal rat
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14. Activity-dependent maintenance and growth of dendrites in adult cortex
Whereas it is widely accepted that the adult cortex is capable of a remarkable degree of functional plasticity, demonstrations of accompanying structural changes have been limited. We examined the basal dendritic field morphology of dye-filled neurons in layers III and IV of the mature barrel cortex after vibrissal-deafferentation in adult rats. Eight weeks
National Academy of Sciences.
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15. The optimal outcomes of post-hospital care under medicare.
OBJECTIVE: To estimate the differences in functional outcomes attributable to discharge to one of four different venues for post-hospital care for each of five different types of illness associated with post-hospital care: stroke, chronic obstructive pulmonary disease (COPD), congestive heart failure (CHF), hip procedures, and hip fracture, and to estimate t
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16. Socioeconomic and racial/ethnic factors affecting non-fatal medically attended injury rates in US children.
OBJECTIVE: Using a representative survey of US children, the purpose was to evaluate separate effects of socioeconomic and racial/ethnic factors, including access to care, on medically attended non-fatal injury rates. METHODS: Multivariate linear regression models were used to determine associations between injuries and health care coverage (insurance or Med
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17. Social class and preventive health behaviour: a British example.
STUDY OBJECTIVE--To test the relationship between social class and preventive health behaviour in a British national sample and identify which set of more specific socioeconomic factors best "explained" any observed relationship(s). DESIGN--Secondary analysis from a national cross sectional survey of the health attitudes and health behaviour of men and women
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18. AIDS and behavioural risk factors in women in inner city Baltimore: a comparison of telephone and face to face surveys.
STUDY OBJECTIVE--The study aimed to investigate the influence the mode of administration of a questionnaire (telephone or face to face) on reports of sexual behaviour and attitudes of HIV risk among woman of reproductive age. DESIGN--Two cross sectional surveys--one, a modified random digit dialing telephone survey, the second, a face to face street sample--