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in civil engineering concrete is a material combined of hydraulic cement, sand, gravel and water. gravel and sand compose 60 to 70 percent of concrete. these aggregates support compression force of concrete. cement paste acts as glue to stick grain together. in bushehr factories producing aggregates do not operate according to astm standards, so that fineness modulus (fm) of the produced sands ...
the aim of the current study was to investigate the relationship among efl learners learning style preferences, use of language learning strategies, and autonomy. a total of 148 male and female learners, between the ages of 18 and 30, majoring in english literature and english translation at islamic azad university, central tehran were randomly selected. a package of three questionnaires was ad...
We have measured caloric intake, energy expenditure, and the thermogenic effect of food in ten patients with stable COPD who had a history of involuntary weight loss over several years and were malnourished (< 85 percent ideal body weight). Each patient completed a 7-day food record. Indirect calorimetry was performed in the resting postabsorptive state. After placement of a nasoenteric tube, p...
this study was conducted to determine the spatial variability and mapping of available micronutrients iron, zinc, copper and manganese on 20,000 hectares of soils in south of tehran lands in order to identify deficiency, enough and toxicity areas. 196 surface soil samples (0-25cm) to a regular grid network of 1000×1000m were collected and extracted by dtpa and tea and concentrations of elements...
BACKGROUND Iodine is an essential component of thyroid hormones; either low or high intake may lead to thyroid disease. We observed an increase in the prevalence of overt hypothyroidism, subclinical hypothyroidism, and autoimmune thyroiditis with increasing iodine intake in China in cohorts from three regions with different levels of iodine intake: mildly deficient (median urinary iodine excret...
We reviewed records of patients with hematologic malignancy requiring mechanical ventilation (MV) from 1976 to 1985 (excluding postoperative MV less than 48 hours). There were 119 episodes in 116 patients. In-hospital mortality was 82 percent. Of 21 (18 percent) episodes survived, median duration of survival was 12 months. Survivors did not differ from nonsurvivors in age, leukocyte count, or d...
Nine hundred Tennessee-based internists, family physicians, and obstetrician-gynecologists were randomly selected and surveyed to identify Papanicolaou smear cell recovery methods used in their practices. This 16-item survey also requested typical laboratory reporting procedures on Papanicolaous smears. The most frequently reported cell sampling technique was the combination cotton-tipped appli...
The purpose of the present study was to estimate the dominant handgrip strength and its correlations with selected anthropometric and physiological characteristics in inter-college volleyball players. Three anthropometric characteristics, two body composition parameters, two physical and two physiological characteristics were measured on randomly selected 40 inter-college volleyball players (40...
Sucrose concentration of sugarbeets (Beta vulgaris L.) grown in the U.S. varies over a wide range of 10 to 20 percent. Within a climatic zone such as tration varies over a narrower 20 percent. This variation in southern Idaho, sucrose concenbut still wide range of 14 to sucrose concentration is due to many factors that include variety (19, 24, 26), nitrogen (N) level (18, 23), growth patterns o...
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