The evidence from in vivo studies showed that glucose polymer enhanced intestinal calcium absorption. However, the mechanism with which calcium absorption is increased by glucose polymer administration is not clear. Calcium uptake by isolated everted rat ileal gut sac was used as a technique in an effort to explore the effect of this carbohydrate on calcium uptake under in vitro conditions.As a comparison, ileal sacs were treated with buffer and sugar solutions at an equivalent dose. The results showed that all three sugars, as compared to buffer treatment, enhanced calcium uptake by ileal sacs, lactose 30.7%, glucose polymer 33% and glucose 24.7%, indicating a non-specific mechanism is involved in intestinal calcium absorption.

In the experiment, 4 male healthy divers were exposed in the He-N2-O2 saturation diving chamber for 21 days and stayed continuously at the depth of 300m for 7 days. Four meals were supplied daily during the exposure to high pressure. Three months prior to and during the period of exposure to high pressure, 2 pills of 9 vitamins compound were given to each diver per day, (a pill contained:YA 2500 IU, VB1 2mg, VB2 Img, VB6 1mg, VC 35 mg, VD2 200 IU, VE 1mg, nicotinamide 10 mg, D-calcium pantothenate 2 mg) and dietary survey, weight measurement and vitamins excretion test were performed. The result showed that the intake of food and calorie were much higher than that prior to and after decompression. The divers were found of the foods with high protein, high carbohydrate, low fat, and full of vitamins, but detested high fat food during exposure to high pressure. Their weights were slightly decreased as compared with those in other experiments reported at home and abroad. Thus the author suggests that free choice of food and a tablet of vitamin compound would be recommended in order to meet the divers' need.

The studies of nutritional status and biochemical indices of obese children were taken in three elementary schools with different socioeconomic levels. Subjects including obese and overweight children were matched with normal weight children by the ratio of 1:1. The caloric intake of the obese children was obviously higher than that of the normal children. There were significant differences between the obese and the normal children in concentrations of Hb and serum total protein (p

The total energy expenditures and intakes, as well as the changes of BMR, body weight, skinfold thickness and arm circumference were measured in 262 lactating women (6 months postpartum), 53 similarly sized nonlactating nonpregnant women living in the same district serve as control for comparison in Guangdong province. The energy expenditures were determined by indirect method. The results appeared that both body weight(ave-rage loss 4.2 kg) and skinfold thickness gradually reduced significantly in the first 4 months, but did not change from 4th to 6th months after delivery. Arm circumference had no change during 6 months postpartum. The BMR at the 1st week was higher (P0.05). The energy expenditure for household chores and activties in lactating group was a kind of "light activity" totally 8.36010.90 MJ/d. The energy expenditure for milk secretion was estimated to be 2.807 MJ/d. The energy intakes of the lactating group was 2.259 MJ/d more than the nonlactating group. It is recommended that the .calorie intake should be added about 1.883 MJ/d in the 1st 4 months and 2.720 MJ/d after 4 months, or average 2.092 MJ/d during 1st 6 months of lactation for lactating mothers.

Objective:To study the effect of grape procyanidin (GPC) on the levels of plasma?-granule membrance protein 140 (GMP140) and thromboxane B2 (TXB2 ) in rats. Method:Wistar rats fed by high fat diet (HFD) were given GPC i.g. at different doses for 6 w, and the levels of plasma GMP140 and TXB2 were examined by radioimmunoassay (RIA). Result:Plasma GMP140 and TXB2 levels of high dose GPC were respectively 7.89?1.02ng/ml, 131.71?42.13 pg/ml, significantly lower than those of HFD group. Conclusion:GPC could inhibit the increase of plasma GMP140 and TXB2 induced by high fat diet in rats.

Energy expenditures of 30 preschool children (with one half of males) randomized from 181 subjects aged from 5 to 6 in the same kindergarten were carefully measured by indirect method and respiratory chamber, including 21 items of activities and a total follow-up time-motion estimations was also made.The lowest energy expenditure in daily activity was the item of while asleep 0.709 kcal.m-2. min-1, physical exercise was at the middle 1.851 kcal .m-2. min-1, and the rapid running was the highest 4.762 kcal.m-2.min-1. A total average energy expenditure in 24 hours estimated was 1049.08 to 1177.66 kcal/day. The results were discussed.

A gas chromatographic method was established for determination of cholesterol. The egg yolk was directly saponified with 1ml 40% potassium hydroxide and 20ml ethylene glycol. The unsaponifiable substances were extracted by diethyl ether and then dried with anhydrous sodium sulfate. The extract (2?l) was injected into the gas chromatograph. The average percentage of recovery was 100.0?2.6%. The precision of the method was good, the coefficient of variation was 1.9%. The mean cholesterol content of egg yolk determined by this method was 1247.1?80.1 mg/100g and agreed with the value reported in literature.