For any group G, let C(G) denote the set of centralizers of G.We say that a group G has n centralizers (G is a Cn-group) if |C(G)| = n.In this note, we prove that every finite Cn-group with n ≤ 21 is soluble andthis estimate is sharp. Moreover, we prove that every finite Cn-group with|G| < 30n+1519 is non-nilpotent soluble. This result gives a partial answer to aconjecture raised by A. Ashrafi in ...

A combination of salicylhydroxamic acid (SHAM) + cyanide (CN) is known to stimulate dark germination of Lactuca sativa L. seeds. Further studies were done to characterize SHAM and CN action in stimulating dark germination of lettuce seed. Germination was stimulated slightly by either SHAM or CN, whereas when SHAM and CN were combined germination was greatly enhanced. Treatment of seeds with ...

The porosity and hydrogen storage properties of the dehydrated Prussian blue type solids Ga[Co(CN)6], Fe4[Fe(CN)6]3, M2[Fe(CN)6] (M = Mn, Co, Ni, Cu), and Co3[Co(CN)5]2 are reported and compared to those of M3[Co(CN)6]2 (M = Mn, Fe, Co, Ni, Cu, Zn). Nitrogen sorption measurements suggest partial framework collapse for M2[Fe(CN)6] (M = Co, Ni) and Co3[Co(CN)5]2, and complete collapse for Mn2[Fe(...

Cranial nerve (CN) anomalies have been regarded as a major criterion for a clinical diagnosis of CHARGE syndrome for some time. However, there have been relatively few studies of the extent of this involvement. A detailed questionnaire (in French or English) was distributed to all physicians who participated in the 2001-2004 Canadian Paediatric Surveillance Program (CPSP), and who identified th...

The paper elaborates methodological basis of collaborative networks (CN) complex adaptation. We consider challenges and underlying principles of the CN complex adaptation. Subsequently, the DIMA-methodology of the integrated CN modeling is considered. The paper ends with the presentation of the fivelevel CN complex adaptation concept and summarizing DIMA-methodology application in the CN comple...

We consider the upper bounds of the finite block length capacity Cn,FB(P ) of the discrete time Gaussian channel with feedback. We prove the refinements of relations Cn(P ) ≤ Cn,FB(P ) ≤ Cn(P ) + 1 2 and Cn(P ) ≤ Cn,FB(P ) ≤ 2Cn(P ), which are given by Cover and Pombra. And we prove the relation C2(P ) ≤ C2,FB(P ) < C2(2P ), which is a partial solution of the conjecture given by Cover.