956 resultados para LINGUISTIC RHYTHM
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[Traditions. Asie. Inde. Province de Madras [i.e. Chennai]]
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[Traditions. Asie. Inde. Chotā Nāgpur]
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[Traditions. Asie. Inde. Chotā Nāgpur]
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[Traditions. Asie. Inde. Chotā Nāgpur]
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[Traditions. Asie. Inde. Chotā Nāgpur]
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[Traditions. Asie. Inde. Chotā Nāgpur]
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[Traditions. Asie. Inde. Présidence de Madras [i.e. Chennai]]
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[Traditions. Asie. Inde. Province de Madras [i.e. Chennai]. État du Kérala. Kochi]
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[Traditions. Asie. Inde. État du Gujarat. Ahmadabad]
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[Traditions. Asie. Inde. Présidence de Bombay. Pakistan. Province du Sind. Haidarābād]
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[Traditions. Asie. Inde. Province de Delhi]
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[Traditions. Asie. Inde. Pakistan. Province du Sind. Haidarābād]
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The authors examine the relation between the perinatal mortality rate (PMR), birth weight in four categories, and hour of birth throughout the week in Switzerland, using data on 672,013 births and 5,764 perinatal deaths recorded between 1979 and 1987. From Monday to Friday, the PMR follows a circadian rhythm with a regular increase from early morning to evening, with a peak for babies born between 7 and 8 p.m. This pattern of variation has two main components: The circadian rhythms for the proportion of births in the four weight categories and the PMR circadian rhythm for babies weighing more than 2.5 kg. According to a cosinor model, which describes about 40% of the total variation in the PMR, the most important determinants are changes in the proportions of births: Low birth weight increases toward the afternoon and night. Mechanisms underlying the weight-specific timing of birth are discussed, including time selection of birth according to obstetric risks, the direct effect of neonatal and obstetric care, and chronobiologic behavior.
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[Traditions. Asie. Inde. Province de Delhi. Delhi]