نتایج جستجو برای: naa at a concentration of 01 mgl
تعداد نتایج: 23431349 فیلتر نتایج به سال:
power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...
the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...
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...
abstract abstract of thesis (includes summary, goals, execution methods, and results) story “al-obnosat al-bayza” is one of the short stories from “hanna mineh” collection. this story is a selection of lives of some humans during a voyage together, each of them is a symbol of human nature (love, mind, kindness) and examine social, cultural, and political aspects of governing system, and it...
in the name of allah , the compassionate the merciful abstract shath ( blasphemic utterace made during spiritual ) is a complicated concept that deserves reflection in gnosticism and sufism ( mysticism ) and estem and westem scholars have alwaya paid attention to it. although principal essence of gnostic belief is the holy divine law ,gnosticism has pure and unique thoughts . by glancing at t...
Wood vinegar is a substance, derived from cooling black carbon fire, which could be used instead of chemical materials in the agriculture industry as an organic compound. In order to study the effectiveness of pine wood vinegar on physiological and photosynthesis traits of cucumber, two experiments were conducted based on a completely randomized design with six treatments including 0, 1250, 200...
?it is of utmost priority for an experienced teacher to train the mind of the students, and enable them to think critically and correctly. the most important question here is that how to develop such a crucial ability? this study examines a new way to the development of critical thinking utilizing critical discourse analytical tools. to attain this goal, two classes of senior english la...
Salvia leriifolia (Lamiaceae) is an endemic endangered plant of Khorasan and Semnan province from Iran. Poor germination of seeds for this plant is a serious problem tomass production. The first step to improve this precious plant is to produce sterile plantlets in order to prepare explants of appropriate vigor. In this study, in vitro culture of Salvia leriifolia embryo was performed through a...
گیاه آلوئه ورا (aloe vera l.) کاربردهای مختلفی در زمینه های صنعتی و بهداشتی دارد. عصاره برگهای این گیاه برای درمان بیماریهای عفونی، زخمها، سوختگیها، حساسیت های پوستی و جلوگیری از ریزش مو کاربرد دارد .تکثیر این گیاه به طور سنتی بوسیله کاشت پاجوش انجام می گیرد .به علت نرعقیم بودن از بذور گیاه آلوئه ورا برای تکثیر استفاده نمی شود زیرا دگرگشنی مانع یکنواختی ژنتیکی گیاه می شود که از مسائل مهم در این...
the present research has been deducted from a provincial research project which aims at determining the relationship of variables of variables of occupational self-concept, intelligence beliefs and metacognitive with entrepreneurship among the students of payame noor university of kurdistan. the volume of the samples was 1080 students (576 female and 504 male students). the research methodology...
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