1000 resultados para Mortalité naturelle
Resumo:
In Switzerland like in most developed countries, the number of births is strongly related to the hour of the day and the day of the week: this pattern is very probably related to the current practice in obstetrics. Less expected is the fact that the perinatal mortality shows a striking circadian rhythm according to the hour of birth. The paper presents this pattern and comments some related issues.
Resumo:
Based on a study of the type material housed in the Muséum National d'Histoire Naturelle Paris, lectotypes are designated for the following species: 1) described by Jekel in 1855 - Ptychoderes columbianus, P. callosus, P. mixtus, P. antiquus, Hypselotropis batesi, Ectatotropis conicollis, and Tropipygus speciosus; 2) described by Thomson in 1858 - Phloeotragus sparsutus. The following species have the type specimens illustrated: Ptychoderes mixtus, lectotype female; P. tricostifrons, holotype male; Hypselotropis speciosa, lectotype male; Phloeotragus sparsutus, lectotype male and paralectotype female.
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Échelle(s) : 1:600 000
Resumo:
Comprend : Introduction à l'étude des diatomées ; Exposé de la classification des diatomées
Resumo:
Comprend : Introduction à l'étude des diatomées ; Exposé de la classification des diatomées
Resumo:
Comprend : Introduction à l'étude des diatomées ; Exposé de la classification des diatomées