نتایج جستجو برای: heavy and 50 non
تعداد نتایج: 17084565 فیلتر نتایج به سال:
for several years, researchers in familiarity of efl teachers with post-method and its role in second and foreign language learners’ productions have pointed out that the opportunity to plan for a task generally develops language learners’ development (ellis, 2005). it is important to mention that the critical varies in language teaching was shown is the disappearances of the concept of method ...
background: cigarette butts have been shown to release numerous kinds of chemicals such as heavy metals in water and may be a continual source of aquatic environments contamination after discarding. the objective of the present study was to determine the concentration of cd and pb in cigarette filters of different iranian and non-iranian brands in smoked and non-smoked samples. methods: ten dif...
ارزیابی ریسک بهداشتی ناشی از فلزات سنگین موجود در ذرات معلق در هوای محوطه دانشگاه علوم پزشکی کردستان
Background and purpose: In recent years, dust storms have affected many regions in Iran including Kurdistan province. Along with dust other pollutants such as heavy metals may also be transferred which pose a risk to human health. The purpose of this study was to determine heavy metals concentrations in atmospheric PM10 in Sanandaj, Iran and also assessing their health risk on the staff and stu...
abstract: the present study was undertaken to investigate whether 1) there is any significant correlation between iranian efl/eap learners’ l2 writing proficiency and their willingness to communicate, 2) there is any significant difference between efl and eap learners in terms of willingness to communicate, 3) there is any significant difference in wtc of iranian efl/eap learners with 1- nati...
Background: The knowledge of blood parameters is important for assessing the physiological status and health of animals. OBJECTIVES: This study was conducted to determine the effect of heavy pregnancy on some serum indices of dromedary camels. METHODS: Twenty clinically healthy female dromedary camels aged between 4-5 years were divided into two equal groups: I: pregnant camels in their last tr...
aims: heavy metals in the environment are toxic to plants, animals and human. this study aimed to investigate concentration of arsenic, lead and cadmium in iranian and non-iranian rice which have been sold in kashan city, iran shops. materials & methods: in this cross-sectional study, 126 samples from 42 trademarks (15 iranian and 27 non-iranian) rice were collected from kashan shopping center...
OBJECTIVE To examine the relationship between smoking, heavy drinking and depression among U.S. middle-aged and older adults. METHOD Individual-level data came from 1992-2012 waves of the Health and Retirement Study. Smoking was ascertained from self-reported cigarette smoking status at the time of interview. Heavy drinking was defined as one or more drinks per day on average or four or more ...
background: within the context of developing techniques to facilitate the diagnosis of the thyroid diseases, the elemental composition of pathological thyroid tissue (neoplastic and non-neoplastic) was investigated by proton induced x-ray emission. the pixe has been widely used as a sensitive technique for trace elemental analysis in both biological and medical fields. materials and methods: th...
background: exposure to heavy metals in development of many diseases has been investigated previously, specially created by oxidative stress. the etiology of rheumatoid arthritis (ra) is still not fully understood but oxidative stress created by heavy metals may have role in development of ra. the aim of present study was to compare serum level of heavy metals in ra and healthy control individu...
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