The density of electron states, p(E), in disordered systems in the band-tail region near band edges is investigated. %'e show that the p(E) of the Halperin and Lax type derived by Sa-yakanit predicts, in three dimensions, an exponential (Urbach) band tail for the correlation lengths found in amorphous Si and within the energy range observed in optical absorption near band edges. The simple expo...

OBJECTIVE This observational validation study was conducted under controlled conditions to test the accuracy of dietary recall in normal weight, overweight, and obese men using the USDA five-step multiple-pass method for dietary recall. DESIGN Cross-sectional analysis of actual and recalled intake of food during 1 day. SUBJECTS/SETTING Forty-two men ranging in age from 21 to 65 years and in...

BACKGROUND The data presented here are a response to calls for more direct measurements of pesticide residues in foods consumed by children and provide an opportunity to compare direct measures of pesticide residues in foods representing actual consumption with those reported by the U.S. Department of Agriculture Pesticide Data Program. OBJECTIVE We measured pesticide residues in 24-hr duplic...

Research with rodents and nonhuman primates suggests that maternal prenatal dietary fat intake is associated with offspring behavioral functioning indicative of risk for psychopathology. The extent to which these findings extend to humans remains unknown. The current study administered the Automated Self-Administered 24 hr Dietary Recall Questionnaire three times in pregnancy (n = 48) to examin...

INTRODUCTION Zinc deficiency is wide spread in developing countries. Its deficiency during pregnancy has been documented to be associated with growth retardation, congenital abnormalities, and low birth weight. Limited community based data is available on the serum zinc levels during pregnancy from Haryana State, India. Hence the present study was undertaken. METHODS A community based cross s...

many common diseases, including cardiovascular disease (cvd) are associated with diet. hyperlipidemia, hypertension, diabetes and obesity are major risk factors for cvd which are diet-related and the incidence of which is on the increase in isfahan, iran. this cross-sectional descriptive study was conducted, using the 24-hour recall questionnaire, to determine dietary pattern of the adult (>19 ...

BACKGROUND Calcium is an essential element nutrient in our body, and insufficient calcium intake is very common in Korean. Socioeconomic status (SES) is known to be associated with quality of diet and health. The purpose of this study was to compare between calcium intake by region and SES. METHODS This study used data from a nationally represented sample of Koreans (n=19,249) from 2011 to 20...

OBJECTIVES To create a food frequency questionnaire specifically designed to capture the dietary habits of Saudis and test its validity and reliability. Methods: This investigation is a longitudinal, test-retest study conducted in King Saud University, Riyadh, Kingdom of Saudi Arabia between December 2015 and March 2016. A list of 140 food items was included in the questionnaire where a closed-...