نتایج جستجو برای: ingestion dose and risk assessment

تعداد نتایج: 17100636  

2007
Peter Collett Nikole Gyles

This study investigates the impact of class attendance and the use of optional formative assessment tasks on student performance. We hypothesise that a positive relationship exists between students’ attendance rates and their success on assessment tasks. We also hypothesise a positive relationship between the extent to which students use formative assessment tasks (in the form of on-line multip...

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

this study attempted to explore if teaching english collocations through two different modes of awareness-raising and input flooding has any possible differential effect on immediate retention as well as retention in a delayed assessment. it also compared the possible differential effect of teaching english collocations implicitly and explicitly on actively using the items in writing. m...

2014
Thomas Hecht Lucie Langer Paul Smith

Smart grids will make extensive use of information and communication technology (ICT) to enable the integration of renewable energy sources. Consequently, future power grids come with a much larger cyber-attack surface, which makes cybersecurity risk assessment a major concern. Due to their cyber-physical nature, risk assessment in smart grids is a challenging task. Moreover, the complex mix of...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1393

due to extraordinary large amount of information and daily sharp increasing claimant for ui benefits and because of serious constraint of financial barriers, the importance of handling fraud detection in order to discover, control and predict fraudulent claims is inevitable. we use the most appropriate data mining methodology, methods, techniques and tools to extract knowledge or insights from ...

2012
Sunduk Kim Ji-Yeon Yang Ho-Hyun Kim In-Young Yeo Dong-Chun Shin Young-Wook Lim

OBJECTIVES The purpose of this study was to assess the risk of ingestion exposure of lead by particle sizes of crumb rubber in artificial turf filling material with consideration of bioavailability. METHODS This study estimated the ingestion exposure by particle sizes (more than 250 um or less than 250 um) focusing on recyclable ethylene propylene diene monomer crumb rubber being used as arti...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد علوم دارویی - پژوهشکده علوم 1392

purpose a metabolic abnormality such as obesity is a major obstacle in the maintenance of the human health system and causes various chronic diseases including type 2 diabetes, hypertension, cardiovascular diseases, as well as various cancers. this study was designed to summarize the recent scientific knowledge regarding the anti-obesity role of curcumin (diferuloylmethane), which is isolated f...

Journal: :iranian journal of radiation research 0
s. dizman abant i̇zzet baysal university, faculty of sciences and arts, department of physics, 14280, bolu, turkey f.k. görür recep tayyip erdoğan university, faculty of sciences and arts, department of physics, 53100, rize, turkey r. keser abant i̇zzet baysal university, faculty of sciences and arts, department of physics, 14280, bolu, turkey

background: turkey, especially the northern part of it, was one of the countries which were contaminated by the chernobyl accident.  rize is a city located in the northeastern district of turkey which was heavily influenced by the chernobyl nuclear accident. materials and methods: in this study, the activity concentrations of natural (226ra, 232th, 40k) and artificial (137cs) were measurements ...

2011
E. Sarapultseva J. Malina A. Gorski

The effects of low-dose -irradiation on the crustacean Daphnia magna have been analyzed. Given that the LD50 for this species is approximately 100Gy, one-day-old daphnids were exposed to 10, 100 and 1000mGy of acute -rays. The survival of irradiated animals was evaluated over the maximum lifespan of 90 days. Increased mortality among irradiated at doses of 100 and 1000mGy daphnids was found. Ou...

Journal: :iranian journal of optimization 0
amir amini msc. graduate of industrial engineering, alghadir institute of higher education, tabriz, iran ali zebardast department of economic, faculty of economic and management, urmia university, urmia, iran kiumars shahbazi department of economic, faculty of economic and management, urmia university, urmia, iran

in the process of investment decision making, next to financial indicators many other aspects of investment projects are increasingly often considered. this leads to the multi-criteria evaluation of a project. the advantage of multi-criteria methods is the ability to take into account all (not only financial) aspects of the attractiveness of an investment project. the selection of criteria of p...

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