acids and ketone bodies in the circulation, and there is a need to conserve glucose because of the relatively low carbohydrate content of the milk (for review see Williamson, 1985). During this period of development, brown adipose tissue has a vital role in thermogenesis, and the level of GDP-binding to brown-fat mitochondria is considerably increased (Sundin & Cannon, 1980). The weight of inte...

Ether lipids are widespread in nature, and they are structurally and functionally important components of membranes. The roundworm, Caenorhabditis elegans, synthesizes numerous lipid species containing alkyl and alkenyl ether bonds. We isolated C. elegans strains carrying loss-of-function mutations in three genes encoding the proteins required for the initial three steps in the ether lipid bios...

The first total syntheses of ochnaflavone, an asymmetric biflavone consisting of apigenin and luteolin moieties, and the permethyl ether of 2,3,2'',3''-tetrahydroochnaflavone have been achieved. The key steps in the synthesis of ochnaflavone were the formation of a diaryl ether and ring cyclization of an ether-linked dimeric chalcone to assemble the two flavone nuclei. Optimal experimental cond...

The possibility of obtaining nanocrystaline lead sulfide by an electrolytic method using electrodes is demonstrated, and the influence temperature on synthesis process investigated. Based results X-ray diffraction studies, chemical phase composition obtained samples determined, as well parameters unit cell crystals lattice. size nanocrystallites magnitude residual mechanical strain in them dete...