a survey was carried out in 1998-99 among 20 selected primary schools in the north, south, east and west regions of tehran to determine the level of teachers’ knowledge of asthma. 387 (96.7%) of 400 questionnaires were completed and evaluated. five items were investigated: “general knowledge”, “symptoms and triggers”, exercise”, treatment” and “individual experience”. statistical analysis was p...

objective(s):glaucoma is the second leading cause of blindness and it is related to oxidative stress based on numerous studies. glutathione s-transferases (gsts) are members of multigenic family, which have important role in cells as an antioxidant. in the present study, we examined the polymorphism of gstt1 and gstm1 deletion genotypes (t0m1, t1m0, and t0m0) in 100 glaucoma patients (41with pr...

hyperparathyroidism is an endocrine abnormality that frequently causes diffuse osteopenia in the bones. osteosclerosis is a rare phenomenon in adults with primary hyperparathyroidism since the usual skeletal manifestation is generalized osteopenia. we describe a patient with generalized osteosclerosis in the jaws and skull in association with primary hyperparathyroidism, while the other skeleta...

introduction: lymphoma may involve the gastrointestinal tract either primarily or as a manifestation of extensively disseminated systemic disease. stomach being the most frequent site of primary gastroin-testinal lyphoma, followed by the small bowel and colon respectively (1&2&3). for diagnosis of pi-mary small intestinal lymphoma (psil), one most satisfies the criteria specified by dawson and ...

b a ckground: pediculosis capitis is cosmopolitan health problem. in addition to its physical problems, its psycho-logical effects especially on pupils are more important. this study was conducted to determine the pediculosis capitis among primary school pupils and also find out the role of probable related risk factors in urmia city, iran 2010. methods: 35 primary schools of urmia city accordi...

We introduce a new generalization of Alan Day’s doubling construction. For ordered sets L and K and a subset E ⊆ ≤L we define the ordered set L ?E K arising from inflation of L along E by K. Under the restriction that L and K are finite lattices, we find those subsets E ⊆ ≤L such that the ordered set L ?E K is a lattice. Finite lattices that can be constructed in this way are classified in term...

Our starting point is a very simple one, namely that of a set L4 of four mutually skew lines in PG(7, 2). Under the natural action of the stabilizer group G(L4) < GL(8, 2) the 255 points of PG(7, 2) fall into four orbits ω1, ω2, ω3, ω4, of respective lengths 12, 54, 108, 81. We show that the 135 points ∈ ω2 ∪ ω4 are the internal points of a hyperbolic quadric H7 determined by L4, and that the 8...

Recently the Ruelle-Perron-Fröbenius theorem was proved for Hölder potentials defined on the symbolic space Ω = MN, where (the alphabet) M is any compact metric space. In this paper, we extend this theorem to the Walters space W (Ω), in similar general alphabets. We also describe in detail an abstract procedure to obtain the Fréchetanalyticity of the Ruelle operator under quite general conditio...

We consider a second order linear equation with a time-dependent coefficient c(t) in front of the “elastic” operator. For these equations it is well-known that a higher spaceregularity of initial data compensates a lower time-regularity of c(t). In this paper we investigate the influence of a strong dissipation, namely a friction term which depends on a power of the elastic operator. What we di...