Matches between the bills of hummingbirds and the flowers they visit have been interpreted as examples of coadaptation and feeding specialization. Observations of birds feeding at flowers longer or shorter than their bills combined with a lack of experimental evidence for foraging trade-offs, however, fail to support these interpretations. We addressed these inconsistencies by considering a sel...

the present study explored the embryonic and larval development of an endangered fish species nandus nandus and resolved larval growth performances with the dietary supplementation of different types of lipids. fertilized eggs were collected from fiber glass tanks immediately after spontaneous spawning of n. nandus, which were fed with a 1% phospholipid (squid meal) supplemented diet for 3 mont...

background: aspiration pneumonia is a potentially preventable illness requiring attention to small details of patient care. the type, management, and care of feeding should be carried out properly. materials andmethods: this is a prospective clinical study of enteral feeding on patients admitted to hospital with aspiration pneumonia. the known enteral nutritional methods, advantages,and disadva...

the infant feeding practices and the effects of factors such as mother’s educational level, primary health care, and family income on these practices in 531 households with 930 children 6-60 months of age were studied in rural areas of sirjan (kerman province), iran. the findings indicate that the majority of mothers (85%) breastfeed their infants and 86% of babies are fed the colostrums. the a...

there is a relationship between infant feeding method and maternal postpartum depression (ppd). this study was carried out in an iranian population to compare the prevalence of ppd symptoms between breast feeding and non-breast feeding mothers for first time.four health centers in ahvas were selected by random sampling in 2009. at first 78 non-breast feeding mothers at two months postpartum wer...

High nitrogen steel (HNS) has an excellent tensile strength and impact property due to the solid solution strengthening of nitrogen, which provides a good application prospect in many fields. Fusion welding is one main processing methods HNS, but process prone spatters, serious losses, N2 porosities, poor performances joints, resulting failure large-scale engineering applications HNS. In this w...