نتایج جستجو برای: bod5 showed higher levels than these standards in some stations

تعداد نتایج: 17318148  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده علوم تربیتی و روانشناسی 1391

anxiety is one common disorder during childhood. in curing anxiety disorders, there are different types of psychological remedies, pharmotherapy, family therapy, and music therapy that can improve the individual’s anxiety, but we need some other remedies to improve social and emotional relationship and interactions. considering the importance of curing the anxiety disorders, the effect of sand ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1389

this study investigates the strategies native english and persian speakers employ for expressing gratitude in different situations. the strategies of persian efl learners are also compared with english strategies in order to find the differences that may exist between these two languages. social status and size of imposition of the favor are social variables which are investigated in detail for...

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

implicit and unobserved errors and vulnerabilities issues usually arise in cryptographic protocols and especially in authentication protocols. this may enable an attacker to make serious damages to the desired system, such as having the access to or changing secret documents, interfering in bank transactions, having access to users’ accounts, or may be having the control all over the syste...

پایان نامه :دانشگاه رازی - کرمانشاه - دانشکده ادبیات و علوم انسانی 1393

in recent years, there has been a growing interest among researchers to investigate the relationship betweenteacher self-efficacy and classroom behavior management, especially students misbehavior. therefore, this study aimed to comparatively investigate english and arabic teachers’ use of different behavior managementstrategies, their self-efficacy, and their success in an iranian context. th...

Journal: :Environmental monitoring and assessment 2015
Francis O Arimoro O Nelson Odume Samson I Uhunoma Augustine O Edegbene

The Ogba River in southern Nigeria is an important water resource for its riparian communities. This study evaluates impact of anthropogenic influences on the Ogba River using water chemistry and macroinvertebrate data sets obtained over a period of 6 months between January and June 2012. Four stations, stations 1-4, characterised by various human activities were chosen along the river. Organic...

Journal: :health scope 0
hossein alidadi department of environmental health engineering, health sciences research center, mashhad university of medical sciences, mashhad, ir iran; department of environmental health engineering, health sciences research center, mashhad university of medical sciences, mashhad, ir iran. tel: +98-5138552610, fax: +98-5138522775 azam ramezani school of health, mashhad university of medical sciences, mashhad, ir iran mojtaba davodi department of environmental health engineering, health sciences research center, mashhad university of medical sciences, mashhad, ir iran roya peiravi social determinants of health research center (sdhrc), department of environmental health engineering, gonabad university of medical sciences, gonabad, ir iran maryam paydar social determinants of health research center (sdhrc), department of environmental health engineering, gonabad university of medical sciences, gonabad, ir iran maryam dolatabadi school of health, mashhad university of medical sciences, mashhad, ir iran

conclusions given the high levels of arsenic in the rivash water sources, it is essential that a plan be devised to replace the current supply with safe drinking water. moreover, these water resources should be monitored regularly regarding the risk of contamination with arsenic. results the average arsenic levels in stations a, b, c, d, e, f, g, h, i, and j were 1.53 ± 1.03, 1.30 ± 1.07, 10.55...

پایان نامه :0 1374

in fact this study is concerned with the relationship between the variation in thematice structure and the comprehension of spoken language. so the study focused on the following questions: 1. is there any relationship between thematic structure and the comprehension of spoken language? 2. which of the themes would have greated thematic force and be easier for the subjects to comprehend? accord...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران 1388

target tracking is the tracking of an object in an image sequence. target tracking in image sequence consists of two different parts: 1- moving target detection 2- tracking of moving target. in some of the tracking algorithms these two parts are combined as a single algorithm. the main goal in this thesis is to provide a new framework for effective tracking of different kinds of moving target...

Journal: :international journal of occupational hygiene 0
mohammad javad jafari department of occupational health, faculty of health, university of shahid beheshti, tehran, iran. behnaz shafiei department of occupational health, faculty of health, university of shahid beheshti, tehran, iran. mansour rezazadeh azari department of occupational health, faculty of health, university of shahid beheshti, tehran, iran. mohammad movahhedi department of occupational health, faculty of health, university of shahid beheshti, tehran, iran.

welders may suffer from welding fumes generated during the process if the ventilation systems are improperly applied. the objective of the present work was to study the mitigation of air pollutants at welding stations, using different ventilation scenarios. four air pollutants including iron oxide, respirable dust, ozone, and carbon monoxide were measured during four different ventilation scena...

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

in this research we have studied the effect of some transition-metals (cu, ag and au) substitutions on two-electron reduction potential of flavins by application of dft method. all geometries have been optimized at blyp level of theory and “6-31+g** + lanl2dz” mixed basis set. the frequency job at the same method and basis sets has been performed to obtain gibbs free energy of compounds. it h...

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