large capacity cylindrical tanks are used to store a variety of liquids. their satisfactoryperformance during earthquake is crucial for modern facilities. in present paper, the behavior of cylindricalconcrete tanks under harmonic excitation is studied using the finite element method. liquid sloshing, liquidviscosity and wall flexibility are considered and additionally excitation frequency, liqu...

introduction: sulfur mustard (sm), a toxic alkylating gas, can cause serious long-term pulmonary complications such as chronic obstructive pulmonary disease (copd). metabolic syndrome (mets) is one of the important comorbidities of copd. this study was designed to evaluate the frequency of metabolic syndrome in iranian chemical warfare patients (cwps) with copd. materials and methods: thirty cw...

background: ulcerative colitis (uc) is a multi-factorial autoimmune disease. p-glycoprotein is encoded by the multidrug resistance 1 (mdr1) gene. the c3435t polymorphism in the mdr1 gene is correlated with low p-glycoprotein expression. additionally, vitamin d has regulatory effects on the immune system. the aim of our study was to determine the association between the c3435t mdr1 polymorphism ...

This article examines a new approach which solves Linear Programming (LP) problems with stochastic parameters as a generalized model of the fuzzy mathematical model analyzed by Verdegay. An expectation model is provided for solving the problem. A multi-parametric programming is applied to access to a solution with different desired degrees as well as problem constraints. Additionally, we presen...

We have conducted a retrospective study to know the impact of a didactic sitting on the Ponseti method of clubfoot management. We have compared the outcome of patients managed by orthopaedic residents who attended such a session with that of patients treated by residents who didn’t get this additional training. The results revealed that the frequency of PTA tenotomy was significantly higher in ...

background: premature ejaculation (pe) is the most common sexual disorder in men and studies reported prevalence up to 30% (1, 2). pe is not a life-threatening medical condition but it influences the quality of life (qol). objectives the aim of this study was to compare the efficiency, and safety of alpha blocker drugs in the treatment of patients with premature ejaculation (pe). additionally w...

Microstructural evolutions of twinning induced plasticity (TWIP) steel during tensile straining were investigated by in situ SEM observations. The results indicated that slip lines and mechanical twins as well as surface relief were increased with increasing strain, resulting in a stepped surface. Additionally, these deformation mechanisms could change the shape of each grain via shear and rota...

Robust performance controller design for duty-cycle controlled series resonant converter (SRC) is proposed in this paper. The uncertainties of the converter are analyzed with load variation and power circuit components tolerances are taken into consideration. Additionally, a nominal performance (NP) controller is designed. Closed-loop system is simulated with Orcad and simulation results of r...

In this paper, we introduce subspace-frequently hypercyclic operators. We show that these operators are subspace-hypercyclic and there are subspace-hypercyclic  operators that are not subspace-frequently hypercyclic. There is a criterion like to subspace-hypercyclicity criterion that implies subspace-frequent hypercyclicity and if an operator $T$ satisfies this criterion, then $Toplus T$ is sub...

the acquisition of argument structures has been studied by a variety of second language acquisition scholars within the past two decades (atay, 2010; can, 2009; chay, 2006, & kras, 2007, among others). in the present study, ‘predicate’ as the most substantial element of a sentence is investigated. there are three english verb-types which seem to be more problematic for persian efl learners:...