background: more than 80% of patients with hematologic  malignancies will develop fever during more than one chemotherapy cycle combined with neutropenia. we aim to evaluate empiric antibiotic strategies in febrile neutropenic (fn) cancer patients. methods: this is a concurrent study performed in the “shahid ghazi” teaching hospital, hematology-oncology center of tabriz, iran during the period ...

background: bone mineral density (bmd) changes during the course of rheumatoid arthritis (ra). the present study was designed to investigate the status of bmd in patients with ra treated with anti-rheumatic drugs. methods: bmd at the femoral neck (fn-bmd) and lumbar spine (ls-bmd) were measured by dual energy x-ray absorptiometry (dxa) method using norland densitometer. disease activity (da) wa...

The largest class of hyperstructures is the one which satisfies the  weak properties. We connect the theory of P-hopes, a large class of  hyperoperations, with the Lie-Santilli admissibility used in  Hardonic Mechanics. This can be achieved by a kind of Ree,  sandwich hyperoperation.

Let Fn be the Farey sequence of order n. For S?Fn we let Q(S)={x/y:x,y?S,x?y and y?0}. We show that if Q(S)?Fn, then |S|?n+1. Moreover, prove in any following cases: (1) Q(S)=Fn; (2) Q(S)?Fn |S|=n+1, must have S={0,1,12,…,1n} or S={0,1,1n,…,n?1n} except for n=4, where an additional set {0,1,12,13,23} second case. Our results are based on Graham's GCD conjectures, which been proved by Balasubram...

Let Out(Fn) denote the outer automorphism group of the free group Fn with n > 3. We prove that for any finite index subgroup Γ < Out(Fn), the group Aut(Γ) is isomorphic to the normalizer of Γ in Out(Fn). We prove that Γ is co-Hopfian : every injective homomorphism Γ → Γ is surjective. Finally, we prove that the abstract commensurator Comm(Out(Fn)) is isomorphic to Out(Fn).

Let FN be the distribution function of a finite real population size N. Fn empirical sample n drawn from without replacement. TFN any product moments or cumulants FN, let TFn denote version, and Tn,NFN expected value with respect to FN. We prove following remarkable inversion principle that TN,nFn is equal TFN. also obtain an explicit expression for all orders up six.