a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

this research aims at answering the questions about translation problems and strategies applied by translators when translating cultural concepts. in order to address this issue, qualitative and quantitative study were conducted on two groups of subjects at imam reza international university of mashhad. these two groups were assigned as beginner and advanced translation students (10 students). ...

در این پایان نامه ابتدا روش های لانکسوز و روش های تکراری را مطرح می کنیم و سپس روش های گرادیان مزدوج و مانده مزدوج را با جهتهای جستجو مطرح کرده و تعمیم می دهیم روش های bi-conjugat gradiant و bi-conjugat residual را مطرح کرده و نتایج عددی حاصل را بیان کرده و نتیجه میگیریم که bi-conjugat residual بهتر از bi-conjugat gradiant می باشند.

in reality, most structures involved in geotechnical engineering are three dimensional in nature, and although in many, plane strain or axisymmetric approximations are reasonable, there are some, for which 3-d treatment is required. the quantity of data, and the size of the various vectors and matrices involved in such analysis, increase dramatically. this has sever implications for computer r...

Background and Objectives: Food is very important for health and treatment. The inctease of food residuals specially in hospitals can lead to the decreas of food intake and also increase cost the of treatment and hospitalization. The goal of this study was to determine the effect of food services training on amount of food residual in Tehran Boali Hospital to improve hospital catering. Mater...

august wilson is undoubtedly one of the rare black playwrights whose works have attracted streams of attention and worldwide audience. the present study aims at analyzing fences and piano lesson which are two of the most successful plays in his pittsburgh cycle from the perspective of michel foucault’s theories and ideas. studying these two plays from foucault’s perspective opens new windows in...

Introduction: The Electrochemical process has high performance efficiency in nitrate removal.  And the process may change the values of the residual chlorine dosages, hardness and alkalinity alongside nitrate removal. In this study, the changes of these parameters during the electrochemical denitrification process were studied. Methods: This experimental study was performed on synthetic w...