百度知道 - 信息提示

the densely populated city in Asia is fast to carry out the retrofit of old residential area on a largescale.Most of these old residential area safety evacuation planning lag,population and building density,building is old,evacuation channel not free public safety hidden trouble.How to make the early warning in disaster evacuation weak area of the old residential area, optimization of evacuation route eventually complete massive crowd evacuation,reduce disaster has become the problems of China have to save on planning and construction and old district in the process of updating!

Abstract Objective: to infant nutrition security, direct you to scientific feeding, help the main feeding people to establish a correct concept of feeding, build good home food environment, to promote the rational feeding infants and healthy development, and lay a good foundation for the establishment of healthy dietary behavior for children. Methods: a dietary survey is public nutritionist common work skills. In order to understand the different individuals and groups of dietary habits, including a variety of nutritional intake can varieties of food and daily food intake in the voxel volume, nutrition workers need to select the appropriate dietary survey method was applied to investigate the relevant population. Including dietary survey methods: 24 hours, 24 hour recall method recall method and diet history knot legitimate, bookkeeping, weighing method. Regardless of the method take the intake of food is an estimate. Quality awareness of food and food accurate estimation is important to improve dietary survey accuracy. Therefore a suitable method and correct the results of the survey accuracy guarantee. Although, there are many methods of dietary survey (method), but the real for infants (special groups) method of diet survey, there are two. One is the review of 24h method, the other is a dietary history. Results: the nutrition status of infants effects of a lifetime of health status, such as infant malnutrition not only cause weight loss, short stature, but also affects its intelligence and immune function. The excess nutrients will lead to adult cardiovascular disease, diabetes, hypertension and other diseases, so, good nutrition is essential for infants and young children in terms of. Conclusion: nutrition is reasonable or not is the key to the child in the future moral education, all-round development of the. The so-called reasonable feeding is to keep the balance of nutrients, to meet the needs of the baby body growth. Key words: infant diet; nutrition; health;