To evaluate the stability of α-Mg/C14–Mg2Ca lamellar microstructure, aging treatment was carried out for a Mg–14.8 mass% Ca near-eutectic alloy at 573–723 K 1–150 hours. The spacing microstructure obtained by eutectic transformation L → α-Mg + C14–Mg2Ca during solidification approximately 250 nm. High-resolution transmission electron microscopy observations show that α/C14 interface is composed...

We have used sedimentation equilibrium analytical ultracentrifugation to measure the free energy change for the glycophorin A transmembrane helix-helix dimerization in C14 betaine micelles. By varying the amount of micellar C14 betaine, we show that the protein association reaction in the micellar C14 phase behaves as an ideal-dilute solution. In this hydrophobic environment, the mole-fraction ...

background: previous studies have shown that morphine consumption during pregnancy may cause delay or defect of embryo development or abnormal nervous system function in the human and animal models. in the present study, the highest density of morphine accumulation in the central nervous system of rat embryos was evaluated using c14‑morphine. methods: female wistar rats (w 170‑200 g) used and w...

News and Notes Eighth Annual Calorimetry Conference; Symposium on the Role of Proteins in Ion Transport Across Membranes.. 710 Technical Papers One-Step Preparation of C14-Cyanide from Barium Carbonate-C14: J. K. Jeanes .719 Evaluation of Oral Temperature Readings: Francis L. Harmon.. 719 Use of the Thymus Gland in Chicks to Elucidate Interrelationships Between Pteroylglutamic Acid and Biologic...

The present report deals with the absorption of cholesterol and its 3-ahydroxy isomer, epicholesterol, in the rat. It is shown that cholesterol is absorbed at more than twice the rate of its stereoisomer, and that, while 50 per cent of the absorbed cholesterol recovered in lymph is esterified, none of the epicholesterol is so bound. The difference in the absorption rates of these two isomers br...

An efficient acid induced rearrangement of a tetrahalo-7,7-dimethoxybicyclo[2.2.1]heptenyl system leading to substituted indenones is reported. This domino reaction involves dehydration, olefin isomerization, ketal hydrolysis, [3,3]-sigmatropic rearrangement and dehydrohalogenation. The resultant vicinal dihalo olefin moiety in the efficiently generated indenone derivatives was utilized to tran...