تهیه ترکیب فسفرتری کلرید بااستفاده از واکنش فسفر سفید(زرد) و گاز کلر در فاز محلول و درمقیاس آزمایشگاهی موردمطالعه قرارگرفت .پس از انتخاب مناسبتر روش و انتخاب بهترین شرایط کوشش درجهت طراحی واحد نیمه صنعتی انجام شد و توانستیم دراین راستا به تولید 10 کیلوگرم درساعت باخلوص 99/5 درصد برسیم . abstract the preparation of phosphorous trichloride by the reaction of white phosphorous and chlorine gas in ...

    Background & Aim: Following the increasing rate of suicide and its outcomes in recent decades, WHO introduced its attempt to decrease suicide rate as one of its aims in world health program by 2000. As a part of multinational project of World Health Organization, this study was undertaken to determine demographic characteristics of suicide attempters attending emergency ward of Karaj Hospit...

Objectives: The goal of the present study was to design a registration system for recording suicide in Iran, capable of designing identification pathways, registration, and report and follow-up of suicide cases and deaths due to suicide. Method: Through library assessments and surveying suicide registration systems in other countries (Denmark, India and WHO), potential methods of suicide in Ira...

Background and Objectives: Suicide is one of the public health challenges. It involves the individual, family, and even society. Epidemiological study of suicide is one of the most important measures in primary prevention and integration program for suicide in primary health care system. This study evaluated cases who attempted suicide in Khorasan Razavi Province in 2014-2015. Methods: This cr...

according to research, academic self-concept and academic achievement are mutually interdependent. in the present study, the aim was to determine the relationship between the academic self-concept and the academic achievement of students in english as a foreign language and general subjects. the participants were 320 students studying in 4th grade of high school in three cities of noor, nowshah...

Abstract Background & Aims: Suicide is an important public health issue. An estimated 1530000 suicide deaths will occur worldwide in 2020. Providing the preventive programs is the main task of nursing. This study designed to determine the effectiveness of nursing preventive interventions in suicide reattempt. Material & Methods: The clinical trial method using randomization sampling metho...

the space now known as complete erdos space ec was introduced by paul erdos in 1940 as the closed subspace of the hilbert space ?2 consisting of all vectors such that every coordinate is in the convergent sequence {0} ? { 1 n : n ? n}. in a solution to a problem posed by lex g. oversteegen we present simple and useful topological characterizations of ec. as an application we determine the ...

abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

Background: Self-immolation is a common method for suicide among women in developing countries. Culture is considered as an influential factor for attempting suicide by selfimmolation. Better understanding of the influence of culture will be useful to develop specific prevention strategies. Therefore, the study aimed to explore how the culture can influence on attempting suicide by self-immola...