ABSTRACT
Preventive medicine is a highly practical vocation; the students majoring in this major should be trained with abilities of active learning and flexible applying.Nowadays,the main teaching methods in many colleges and universities were assigning homework,communicating on the internet and posing questions in the class,which were only taught by the teacher.The promotion model may promote the knowledge application for the students,with the heuristic teaching in the class based on the virtual or scenic status,practice in scientific research,social service and experiments in the real sites.Through promotion model,students can combine the theoretical knowledge with the reality,learn creatively and apply the knowledge flexibly.
ABSTRACT
In the present work, the bioavailability of heme iron has been studied by means of the hemoglobin regeneration method with iron-deficient rats model, which was conducted by feeding a low iron basal diet. Anemic rats were then divided into groups to which basal diets with various iron levels (7, 14, 28 ppm Fe) from heme iron (Group 1,2,3) and ferrous sulfate (Group 4, 5, 6, as a reference standard) were subsequently fed respectively.After 5-week regeneration period, the regenerated hemoglobin levels of the rats of corresponding groups were (1) 9.56→12.25, (2) 9.71→12.02, (3)9.51→ 11.09, (4) 9.74→10.81, (5) 9.66→11.24, and (6) 9.67→12.05, thereby the percentage of relative bioavailability (RBA) of heme iron were 117.7%, 124.8%, and 94.9% respectively. This result showed that the lower level of heme iron has a higher RBA. The reason why the effect of high level of heme iron was relatively lower was not fully understood.
ABSTRACT
A study on the dietary pattern and nutritional levels of the inhabitants in Jiangsu province was carried out by means of both analysis of food consumption and dietary survey. The results showed that the problem of basic need for food has been resolved in this province since the 1980's mid-period, but animal food consumption was still low relatively.Compared with the data obtained from dietary survey, the amount of grain consumed per capita per day obtained from calculation of food consumption was about 70 g more and the amount of animal food 18 g less. The intakes of energy and nutrients obtained from the two methods were different, but from animal sources showing about 4% higher in the latter. This suggested that the results from dietary survey was nearer to the actual status.The results indicated a tendency lying in the period of adjustment of food pattern. It also demonstrated the imbalance status for some nutrients intake.The difference of the food pattern and nutritional level between rural and urban was distinct and the difference also existed in intercountries. The health index of the inhabitants was better in the recent years but the correlation between the physical index and nutritional level hasn't been established yet.We suggested to increase animal food and beans intake properly, However the animal fat intake must be controlled. A goal was presented about the dietary pattern for the inhabitants in Jiangsu province in 2000. Various demands should de given according to the various area conditions.In addition, some discussion about the DDP score method has been made.