for more than three decades, oxidative coupling of methane (ocm) process has been comprehensively investigated as an attractive alternative for the commercially available ethylene production technologies such as ethane and naphtha cracking. developing a suitable catalyst and proper reactor feeding policy, reviewing and deploying the efficient methods in the separation and purification of the un...

This paper describes various time-domain methods useful for analyzing the experimental data obtained from a circular cylinder force in terms of both wave and current for estimation of the drag and inertia coefficients applicable to the Morison’s equation. An additional approach, weighted least squares method is also introduced. A set of data obtained from experiments on heavily roughened circul...

in this research, the bending analysis of rectangular nanoplates subjected to mechanical loading is investigated. for this purpose, the strain gradient elasticity theory with one gradient parameter is presented to study the nanoplates. from the best knowledge of authors, it is the first time that the exponential shear deformation formulation based on strain gradient elasticity theory is carried...

aims: the presence of a patient with breast cancer in the family can be considered as aguidance for further prevention and increase the susceptibility of people against this disease.champion's health belief model scale is translated and tested in different countries, but fewattempts have been made to measure this scale in women with history of breast cancer.methods: after the standard champion'...

background and objectives: vaccination is the major strategy to protect nurses against infection with hepatitis b virus. however, some nurses do not produce sufficient amount of anti-hbsag antibody required for immunity against infection. chronic occupational stress has been proposed as a risk factor to humoral immunity. given that nursing staff is exposed to occupational stress risk, this stud...

aim and background: in this study, the psychometric properties and hierarchal structural validity of short form health survey scale (sf-36) among students using structural equating modeling was investigated. methods and materials: a sample with 310 students (158 male and 152 female) from tehran university were chosen by multistage sampling method. for verifying discernment validity, two clinica...

N ABSTRACT In order to identify antecedents of infant's tcompliance,with motherst'directionS.on how to solve fo0 task$ (graded, in terms of"stressfulneds to the infant) , 194 Eigh-fisk mothers and their 2-year old child -ea, were observed om,vide6tape and assessed with .a six ;point rating scale. Data collected prenatally and, postnatally at' 3, 6, 12 and months of age were used in' multiple re...

Study of permeability of Fibrous Composites is important in several natural and industrial processes in mechanical engineering. In this study, a comprehensive mathematical model is presented for calculation of normal permeability of ordered elliptical fibrous media. An innovative scale-analysis technique is employed for determining the normal permeability of elliptical fibrous media. In this te...