نتایج جستجو برای: exhausts are responsible for rising discomfort

تعداد نتایج: 11421181  

Journal: :محیط زیست طبیعی 0
فریده عتابی استادیار دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، ایران یوسف رشیدی دکترای مهندسی شیمی، شرکت کنترل کیفیت هوا، شهرداری تهران، ایران علیرضا قراگوزلو استادیار دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، ایران آتنا عربی کارشناس ارشد مهندسی محیط زیست، واحد علوم و تحقیقات تهران، دانشگاه آزاد اسلامی، ایران

particulate and gaseous emissions of pollutants from industries and auto-exhausts are responsible for rising discomfort, aggravates respiratory and cardiovascular. in this study, a system for air quality information in tehran city has been developed, using an online web-based geographic information system. this web-based gis application allows users to recognize areas with a potential increase ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده علوم انسانی و اجتماعی 1392

most specialists in the field of foreign language teachingconsiderreading skill as an interactive process between the reader’s prior knowledge and the text.accordingly, the activation of prior knowledge for an effective comprehension is very important. it is generally agreed that the pre-reading phase is the stage where this type of interaction and activation may be enhanced throughcertain stra...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی صنعتی کرمان - پژوهشکده برق و کامپیوتر 1390

a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...

2002
John Winfield Tim Bresnahan Laura Selznick

This paper determines the effect of voluntary contributions on the output and quality of nonprofit performing arts organizations, specifically classical ballet companies. The effect of ticket revenue on ballet companies is also estimated. The study uses newly presented data consisting of firm’s reported income, divided by source, and weekly wages of ballet dancers obtained from collective barga...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1389

abstract the primary purpose of this study was to explore the actual practices and cognitions of two groups of iranian eap teachers, i.e. language teachers and content teachers, with respect to teaching reading-comprehension and vocabulary. to this end, tehran university of medical sciences which authorizes both groups of teachers to teach eap courses was selected as the context of the study s...

Journal: :مجله علوم پزشکی رازی 0
صبا عرشی s arshi راضیه زرین فرد r zarrinfard iran university of medical sciences and health servicesدانشگاه علوم پزشکی و خدمات بهداشتی- درمانی ایرا سید محمد فرشته نژاد s.m fereshtehnejad iran university of medical sciences and health servicesدانشگاه علوم پزشکی و خدمات بهداشتی- درمانی ایرا آرش پورستار بجه میر a poorsattar bejeh mir iran university of medical sciences and health servicesدانشگاه علوم پزشکی و خدمات بهداشتی- درمانی ایرا ناصر جواهرتراش n javahertarash iran university of medical sciences and health servicesدانشگاه علوم پزشکی و خدمات بهداشتی- درمانی ایرا

background: allergic rhinitis (ar), the most prevalent allergic disease, has a rising trend in the world and has significantly impaired the quality of life of the patients. aeroallergens are the major cause of allergic rhinitis and among them pollens are the main allergens responsible for allergic rhinitis in iran

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم انسانی 1389

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

Journal: :international journal of preventive medicine 0
hasan razmjoo elham abdi sayna atashkadi mohamad reza akhlaghi ali reza peyman mojtaba akbari

background: silicon hydrogel bandage contact lenses are used to enhance epithelial healing, control surface-generated pain, and prevent epithelial erosions after refractive surgery. considering the importance of faster reepithelialization in preventing complications of photorefractive keratectomy (prk) and the fact that the features and specifications of these commercially-available lenses are ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1376

saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...

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