Reference

Studies on trace element metabolism in childhood

Studies on trace element metabolism in childhood. I. Plasma and erythrocyte copper and zinc, erythrocyte manganese, and plasma selenium concentrations in healthy children adults, and the elderly, and in cord blood. Hatano, Shuichi (Sch. Med., Hiroshima Univ., Hiroshima 734, Japan). Hiroshima Daigaku Igaku Zasshi, 31(5), 811-24 (Japanese) 1983. CODEN: HDIZAB. ISSN: 0018-2087. DOCUMENT TYPE: Journal CA Section: 13 (Mammalian Biochemistry) Section cross-reference(s): 18 Cu, Zn, Mn, and Se were detd by flameless at. absorption spectrophotometry in 210 healthy children, 85 healthy adults aged 20-50 yr, and 10 aged persons >70 yr old. Cord blood was taken from 10 healthy mature infants. The plasma Cu concn. in cord blood was significantly lower than that in adult blood. After birth, it increased to the peak value at 1-5 yr of age, then decreased gradually. At >70 yr of age, plasma Cu concn. was higher than that in adults. In adults aged 20-50 yr, the plasma Cu concn.There are some reagents with their cas registry numbers 7440-66-6 and 7440-50-8 are used in this study. in males was significantly lower tan that in females. In other age groups, no sex difference was obsd. The erythrocyte Cu concn. in cord blood was significantly higher than that in adult blood. At 2-6 mo of age, it reached a peak, and then decreased gradually with age. No sex difference was obsd. The plasma Zn concn. decreased in early infancy, and showed the lowest value at 2-6 mo of age. Then it increased gradually with age. The plasma Zn concn. in aged subjects was significantly lower than that in adults. No sex difference was obsd. in each age group. The erythrocyte Zn concn. in cord blood was ~33% of that in adult blood. After birth, it increased with age to ~90% of the adult value by 6-11 yr of age. No sex difference was obsd. The erythrocyte Mn concn. in cord blood and in blood at 1 mo of age were 3-4 times higher than that in adult blood. It decreased rapidly with age to a const. value between the ages of 4 mo and 11 yr. At 12-19 yr of age, the concn in males was significantly lower than that in females. This sex difference became greater in adults aged 20-50 yr. The plasma Se concn. in cord blood was significantly lower that that in adult blood. After birth, it increased gradually with age. The Se concn in aged persons was significantly lower than that in adults. No sex difference was obsd. in either group. .

Zinc electrodes for secondary alkaline batteries

Zinc electrodes for secondary alkaline batteries. (Furukawa Battery Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58119159 A2 15 Jul 1983 Showa, 2 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: H01M004-42. APPLICATION: JP 82-2153 9 Jan 1982. DOCUMENT TYPE: Patent CA Section: 52 (Electrochemical, Radiational, and Thermal Energy Technology) The title electrodes are prepd. from a Zn-based mixt. contg. 2-10 at.% Cu. Thus, a mixt. of ZnO 100, Ca(OH)2 12, PTFE 6, CuO 6 g, and water was heat treated, filled into a core sheet, and conversion treated to prep. a Zn anode for a Ni-Zn battery. The addn. of Cu increased the battery cycle life.Except for chemicals metioned above, 7440-50-8 and 7440-66-6 are also used. .