Let F = fC 1 ; C 2 ; : : : ; C n g be a family of n disjoint convex bodies in the plane. We say that a set V of exterior light sources illuminates F, if for every boundary point u of any member of F there is a point v in V such that u is visible from v, i.e. the open line segment joining u and v is disjoint from F. An illumination system V is called primitive if no 1 2 Valeriu Soltan, LL aszll ...

Epidemiological investigations on Fasciola hepatica fasciolasis were carried out from July 2004 to June 2005 in the Gafsa oases (Tunisia) after the detection of a human case. Three habitats were studied: one in El Gsar and two in Ain Soltan. The prevalence of human infection was 6.6%. The presence of the parasite was detected through serology in 14.3% of cattle, 35% of sheep and 68.4% of goats....

M. Trippenbach, E. Infeld, J. Gocałek, M. Matuszewski, M. Oberthaler, and B. A. Malomed Institute of Theoretical Physics, Physics Department, Warsaw University, Hoża 69, PL-00-681 Warsaw, Poland Soltan Institute for Nuclear Studies, Hoża 69, PL-00-681 Warsaw, Poland Institute of Physics, Polish Academy of Sciences, Al. Lotnikw 32/46, Warsaw, Poland Nonlinear Physics Center and ARC Center of Exc...

In this paper, we investigate the graphs in which all balls are convex and groups acting on them geometrically (which call CB-graphs CB-groups). These have been introduced characterized by Soltan Chepoi (1983) Farber Jamison (1987). CB-groups generalize systolic (alias bridged) weakly groups, play an important role geometric group theory. We present metric local-to-global characterizations of C...

one of the main architectural characteristics in the central area of iran is the relation between life and climatic conditions; e.g., the four-seasonal house which is a typical kind of the central-yard house. as the climate of isfahan is more pleasant than other desert regions in the central part of iran, wind towers are replaced with skylights to ventilate the pool area of hoze-khane. so far, ...

background & aim: verbascum songaricum is a perennial herbaceous belongs to the scrophulariaceae (snapdragon) family. current study was done to study the environmental conditions effect on phytochemical properties of verbascum songaricum leaves for extracting the effective materials. experimental: this study was conducted at five range sites, including hoze valley, ghahiz, someirom, ghale ...

In this study, Dunaliella has been isolated in Jun. 2014 from Hoz-e Soltan and Aran-va-Bidgol salt Lakes (Iran). The isolates have been identified morphologically with the aid of simple light and invert microscope after isolation and purification on their specific medium (Moh202). By using molecular techniques such as polymerase chain reaction (PCR) and amplification of 18S rDNA gene primers, f...