Nutrition investigations on the workers of drilling rig “Bohai 7” belong ing to Bohai Oil Company were conducted in November (winter) 1990 and June (summer) 1991, Energy consumptions of seven major and nine special actions of the offshore personnels were studied. Based on this, recommended amount of food to be taken and that of nutrients to be supplied in the daily dietary intake have been proposed for the workers on offshore drilling platforms, to improve the present improper food pattern which was characterized by high fat and low vitamin to ensure the workers health and to increase their potential adaptability to the special environment.

OBJECTIVETo investigate the maturation of individual bones on the hand and wrist in children with central precocious puberty (CPP) and idiopathic short stature (ISS).

METHODSHand and wrist films of 25 children with CPP, 29 children with ISS and 21 normal controls were evaluated by conventional Greulich-Pyle (GP) atlas method and individual bone assessment method, in which all twenty bones of the hand and wrist were evaluated based on GP atlas, including 2 radius and ulna, 7 carpal bones, 11 metacarpal and phalangeal bones, the average bone age (BA) was calculated. The differences in groups were analyzed by independent samples t test. The differences between the two methods were analyzed by paired sample t test. The differences between BA and chronological age (CA) were analyzed by ROC with SPSS 17.0.

RESULTSCompared with the normal control group, the advance of BA in the CPP group was 0.70-2.26 y (1.48 ±0.78) by the GP atlas method, while that was 0.28-2.00 y(1.14 ±0.86) by the individual bone evaluation method. In all twenty bones, the advance of metacarpal and phalangeal BA was the greatest [0.34-2.06 y(1.2±0.86)]. In the ISS group,the delay of BA was 0.47-2.91 y(-1.69±1.22) by the GP atlas method, while that was 0.48-2.50 y (-1.49±1.01) by individual bone evaluation method.The delay of carpal BA was the greatest [0.59-2.73 y(-1.66±1.07)] in all twenty bones. In the ISS group and the normal control group, there were no statistic differences between the two methods. In the CPP group, statistic difference was found between two methods. There were no statistic differences for the areas under ROC curves between two methods.

CONCLUSIONThe advance of metacarpal and phalangeal BA is the greatest in CPP group and the delay of carpal BA is the greatest in ISS group.Both methods provide diagnostic information for bone age in CPP and ISS children.

Age Determination by Skeleton ; methods ; Carpal Bones ; diagnostic imaging ; Case-Control Studies ; Child ; Dwarfism ; diagnostic imaging ; Female ; Hand ; diagnostic imaging ; Humans ; Male ; Puberty, Precocious ; diagnostic imaging