objective: sarcomas are neoplasms of mesenchymal (stem cell) origin and are rare skin diseases of cats and may occur anywhere on the cat body.the main etiologies of soft tissue sarcomas are feline sarcoma virus induced sarcomas, vaccine site sarcomas, trauma, inflammation and radiation. methods: in march 2014, a three years old male domestic shorthair cat were referred to a private veterinary c...

behavioral problems in cats have drawn more attention in recent years since they affect the cat-owner relationship. this study was designed to study the rate of cats with undesirable behaviors according to their owners. frequency of behavioral problems in 167 cats attending small animal hospital, faculty of veterinary medicine, university of tehran, was evaluated using a questionnaire. accordin...

Round robin tournaments are used in a wide variety of competition settings and especially in recreational sports leagues. The outcomes of such tournaments can be modelled by an orientation of the edges of a complete graph, where each vertex corresponds to a unique competitor. A score sequence is an nondecreasing sequence of the out-degrees of such a graph. In this paper we analyze two previousl...

With the rapid development of swarm intelligence research field, a large number of algorithms in swarm intelligence are proposed one after another. The strong points and the drawbacks of a specific swarm intelligence algorithm becomes clear to be seen when the number of its application increases. To overcome the handicaps, some hybrid methods are invented. In this review, three hybrid swarm int...

In this study, chitosan polymer was modified in two different ways and used for the immobilization of bovine liver catalase (CAT). First, it activated with glutaraldehyde (GAL), then covalently immobilized onto support via lysine amino acid residue CAT. second modification, GAL-activated interacted polylysine (pLYS), reactivated GAL CAT immobilization. Samples bare (Chi), (ChiGAL), polylysine-m...

this study was aimed to detect anti-toxoplasma gondii antibodies in cats infected with rh strain of t. gondii by using an immunoblotting method. for this, cats were experimentally infected using tachyzoites harvested from vero cell cultures. tachyzoites were then lysed and transferred to polyacrylamide gels followed by blotting to pvdf membranes. an immunoblotting was performed using these memb...

objective cerebrospinal fluid (csf), its secretion, circulation and absorption have been the subject of recent researches. there is a general agreement that the main site of csf secretion is in the choroids plexus. however, the main absorption site is controversial. some believe that arachnoid granulations are the principle sites of csf absorption. in this study, different locations of csf abso...

The set cover problem is a classical question in combinatorics, computer science and complexity theory. It is one of Karp’s 21 NP-complete problems shown to be NP-complete in 1972. Several algorithms have been proposed to solve this problem, based on genetic algorithms (GA), Particle Swarm Optimizer (PSO) and in recent years algorithms based in behavior algorithms based groups or herds of anima...

In this paper‎, ‎we give the notions of crossed polymodule and cat$^1$-polygroup‎ ‎as a generalization of Loday's definition‎. ‎Then‎, ‎we define the pullback cat$^1$-polygroup and we obtain some results in this respect‎. ‎Specially‎, ‎we prove that by a pullback cat$^1$-polygroup we can obtain a cat$^1$-group‎.