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Bike Lust: Harleys, Women and American Society. Barbara Joans. Madison: University of Wisconsin Press, 2001. 264 pp.  相似文献   

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The society finch, a little passerin, was purposed to be utilized in embryological studies. Under control of the breeding cycle in 20 pairs, 4 to 6 eggs were used to be laid daily for several repeating week in a year. Average incubation time was 17 days in contrast to 21 in the domestic fowl. The eggs weighed 1.1 g in average and expected smallness of the embryo was regarded as favorable for morphological studies including the scanning electron microscopy. We present the first report of the complete development of the society finch. A number of embryological characteristics are described with special reference to the peculiarity of the altricial finch as compared with the precocial domestic fowl.  相似文献   

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《CMAJ》1982,126(6):639-642
During the International Year of the Child the Manitoba Pediatric Society undertook professional and public education activities to promote breast-feeding in that province. The objective was a 100% increase in the proportion of mothers who breast-fed their infants for 2 months or longer. Surveys conducted before and after the campaign showed no significant increase in the rate of breast-feeding either at the time of hospital discharge or 2 months later. The infants of Winnipeg residents were more likely to be breast-fed than those of women living on Indian reservations or in any other part of the province (termed "rural"). The rate of bottle-feeding was significantly greater among infants of young unmarried mothers. Future programs to promote breast-feeding should be longer and more intensive, should be directed to the young, to rural residents and to Indian women, and should focus on social and emotional factors as well as nutrition and health benefits.  相似文献   

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