An Arg-containing antifreeze glycoprotein from the polar fish Eleginus gracilis was isolated, and the major components were purified to homogeneity. The general protocol for purification was chromatography of serum on DEAE-cellulose, followed by chromatography on a cation exchanger. DEAE-cellulose chromatography resulted in two fractions, A and B. Fraction A contained most of the antifreeze gly...

The acute toxicity of physically and chemically dispersed crude oil and the dispersant Corexit 9500 were evaluated for key Arctic species. The copepod Calanus glacialis, juvenile Arctic cod (Boreogadus saida), and larval sculpin (Myoxocephalus sp.) were tested under conditions representative of the Beaufort and Chukchi Seas during the ice-free season. The toxicity of 3 water-accommodated fracti...

Recent findings suggest that the slow eye movement system, the optokinetic response (OKR) in particular, provides the extra-retinal signal required for the perception of depth from motion parallax (Nawrot, 2003). Considering that both the perception of depth from motion parallax (Ono, Rivest & Ono, 1986; Rivest, Ono & Saida, 1989) and the eye movements made in response to head translations (Sch...

Understanding larval growth, mediated by the interaction of early life traits and environmental conditions, is crucial to elucidate population dynamics. We used a bioenergetic model as an integrative tool simulate growth Arctic cod (Boreogadus saida) larvae test sensitivity modeled temperature food quantity quality. The was computed energy gained through consumption minus lost respiration other...

Information and communication technologies have become vital in the educational realm over past two decades a significant subject English language system. E-materials are not available for all students, that causes an impediment foreign teachers at Dr. Moulay Tahar University of Saida-Algeria. This research paper aims investigating e-teaching e-learning effectiveness Algerian university. The re...