Biology and fishery of navaga fleginus navage (pallas) in the white sea

The radiolysis process of a two-phase heat carrier in the reactor core was studied. A mathematical model of two-phase heat carrier radiolysis, techniques of calculating the model parameters are developed. A program complex is developed realizing the model of radiolysis, as well as the techniques of calculating the model parameters; simulation of radiolysis in AST of integral construction revealed the availability of fields of growth and decrease of radiolysis products concentration and a curve of steady states. Prediction of corrosion behaviour of fuel elements and technological chennels is used at RBMK. Prediction of corrosion behaviour of fuel element shells and technological channels increases APP reliability and safety. The field of application covers designing a reactor and development of water-chemical modesAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

Diet of harp seals (Phoca groenlandica) feeding between the breeding and moulting seasons in the southern Barents and White Seas

The harp seal Phoca groenlandica is the most abundant seal species in the Barents Sea. In order to evaluate the ecological importance of the species, diet studies have recently been carried out at various times of the year. In 1992, data were collected from seals sampled between the breeding and moulting seasons (March-May). There is no doubt that the animals feed during this period. From examinations of stomach and intestine contents, harp seals, sampled in the southwestern parts (Varangerfjord, North Norway) of the Barents Sea, appeared to have been feeding intensively on capelin Mallotus villosus. The harp seal diet in the commercial hunting areas north of the White Sea (the East Ice) consisted of prawns Pandalus borealis, capelin, cod Gadus morhua, saithe Pollachius virens, sculpins (Cottidae), snailfish (Liparidae) and long rough dab (Hippoglossoides plattessoides). Feeding in the East Ice area and in the White Sea appeared to have been less intensive than further to the west. In the White Sea the harp seals had been feeding mainly on crustaceans and the fishes sandeels (Ammodytidae), capelin and White Sea herring (Clupea harengus marisalbi)