نتایج جستجو برای: the samples were analysed using gas chromatography

تعداد نتایج: 16674039  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

Journal: :iranian journal of pharmaceutical research 0
ramezan sadeghi toxicology and pharmacology dept., school of pharmacy, shahid beheshti university of medical sciences, tehran, i.r. iran. hassan yazdanpanah vali-e-asr ave. farzad kobarfard . bphytochemistry research center, shahid beheshti university of medical sciences, tehran, i.r. iran. cdepartment of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, i.r. iran. samira eslamizad atoxicology and pharmacology dept., school of pharmacy, shahid beheshti university of medical sciences, tehran, i.r. iran. mitra bayat . bphytochemistry research center, shahid beheshti university of medical sciences, tehran, i.r. iran.

abstract polycyclic aromatic hydrocarbons (pahs) are classified as persistent and carcinogenic organic pollutants. pahs contamination has been reported in water. many of relevant regulatory bodies such as eu and epa have regulated the limit levels for pahs in drinking water. in this study, 13 priority polycyclic aromatic hydrocarbons (pahs) were determined in tap water samples of tehran and wat...

Journal: :علوم غذایی و تغذیه 0
هانیه طلوعی کارشناس ارشد علوم و صنایع غذایی، معاونت دانشجویی علوم پزشکی تبریز، تبریز، ایران سید رفیع عارف حسینی استادیار دانشگاه علوم پزشکی تبریز، گروه علوم و صنایع غذایی، تبریز، ایران سید حمید هاشمی تولون کارشناس ارشد علوم و صنایع غذایی، معاونت دانشجویی علوم پزشکی تبریز، تبریز، ایران هانیه سادات اجتهد کارشناس ارشد دانشگاه علوم پزشکی تبریز، گروه علوم تغذیه، تبریز، ایران

introduction: the interest in probiotic products have been increased recently by the consumers. milk and dairy products are natural sources of b group vitamins in the human diet. this study was carried out in order to investigate the level of riboflavin (vitamin b2) and niacin (vitamin b3) in probiotic yogurt and the results were compared with the traditional yogurt during refrigerated storage....

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده برق و کامپیوتر 1390

one of the most important goals for increasing recognition and treatment revenue is transmitting vital data to medical care team, more quickly. nowadays, use of new technologies for transmitting data will deploy more and more daily. in this article, for transmitting electrocardiogram, first we code the signal into a suite of codes, then we will use bluetooth technology to transmit data from off...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

the quest for power has formed much of the world history especially in 20th and 21st centuries. oil (energy) particularly after industrial revolution has been a tool for conquest and power and has been transformed to a geopolitical issue. from a geopolitical point of view this has been the case for the last two centuries in central asia and caucasus. central asia and caucasus has always been...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم انسانی 1391

the present study aimed at investigating how different news agencies using the concept of legitimation/delegitimation represent the same event differently. to this end, van leeuwens (2008) legitimatory/delegitimatory framework was applied to the data gleaned from the iranian state-run news agency fars news, british state-run news agency bbc, and also american state-run news agency voa. the resu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1390

the purpose of the research is to examine if integrating cooperative learning into vocabulary learning helps to increase word recognition of students in an elementary school in iran. it tries to investigate whether cooperative learning approach enables students to improve their language learning. this research used stad (students team achievement division) as a cooperative model in this study. ...

Mohammad Hassanzadeh Khayat Shahram Yaghmai

The dried aerial parts of scutellaria lateriflora L. (family Labiatae), have been used for many years as a domestic remedy for epilepsy, hysteria, and nervous tension states. Although several phytochemical investigations have been made regarding the constituents present in this species (i. e. flavonoids, iridoids), none has been recorded concerning the cuticular wax. Using thin-layer chroma...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و زبانهای خارجی 1393

the current study aimed at investigating the relationship between motivation and test preparation strategies (tpss) used by iranian pre-university students in their preparation period for the university entrance exam (uee). due to the importance of uee in iran, this study also attempted to show its impact on these two important variables. to this end, 100 pre-university students in an iranian p...

ژورنال: اعتیاد پژوهی 2014
رضایی, محسن, غلامی, مرتضی,

Objective: It has been greatly attempted to learn more about chemical information on finger prints using new vehicular technique use for the detection of a variety of substances, including narcotic drugs and medicines, as well using nano particles bound to specific antibodies. Over the last few years, the sensitive techniques of gas chromatography and mass spectrometry have been found for the d...

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