Arthritis was induced by immunization of type II collagen in adjuvant in mice from H-2q-bearing crosses between SWR (H-2q/q) and B10 (H-2b/b mice), two strains known to be resistant to collagen-induced arthritis (CIA). The resistance of B10 is known to be due to its MHC haplotype, but it was postulated that the resistance of SWR mice which expresses the susceptible MHC haplotype could be due to...

Geophysical processes which excite variations in the orientation of the Earth have an irregular nature therefore a stochastic approach to the description of Earth rotation seems to be the most appropriate. We describe here a simple stochastic model for the Chandler wobble, originally proposed by Jeereys (1940), then prove its advantage over the sinusoidal modeling by performing the goodness-of-...

duplication of inferior vena cava (ivc) is a rare fi nding in radiologic studies and its coincidence with thrombosis is even rarer. here we described a rare case with duplication of ivc and symptomatic venous thrombosis of her lower extrimity.

For two given graphs F and H, the Ramsey number R(F,H) is the smallest positive integer p such that for every graph G on p vertices the following holds: either G contains F as a subgraph or the complement of G contains H as a subgraph. In this paper, we study the Ramsey numbers R(Pn, K̂m), where Pn is a path on n vertices and K̂m is the graph obtained from the join of K1 and Pm. We determine the ...

Applying some methods of construction on existing i-designs, we obtain some infinite families of new simple designs. We give a table which contains many new simple designs in small cases. The main method which is called the union method, involves taking the union of every two blocks in a given design. We also combine this method with some other well known ones. Some of the new designs obtained ...