abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

now-a-days graphic design plays a major role in influencing culture, society, business, and customers, in such a way that one could look upon every individual as a potential customer. graphic designers seek to identify customers needs and find an intelligent solution for them. correct identification and understanding of those needs is the first step towards achieving ones goals. marketing knowh...

the following question poped up: is there any relationship between iranian high school efl learners reading comprehension and listening comprehension? then the following null hypothesis (ho) was developed to the test the above, mentioned question. "there is no relationship between high school efl learners reading comprehension and listening comprehension. for nearly 16 weeks, the experimental g...

this thesis is a study on insurance fraud in iran automobile insurance industry and explores the usage of expert linkage between un-supervised clustering and analytical hierarchy process(ahp), and renders the findings from applying these algorithms for automobile insurance claim fraud detection. the expert linkage determination objective function plan provides us with a way to determine whi...

Introduction: Chronic use of opiates is associated with a wide range of neuropsychological deficits. Therefore, this study aimed to evaluate one of the neuropsychological functions, updating function of working memory, in three groups, including substance abusers (heroin and opium), those under treatment with methadone, and normal controls. Methods: The method of this study was causal-compar...

Introduction: One of the problems of children with math disorders is the problem of working memory and sense of numbers, which can be increased by teaching math. The aim of this study was to evaluate the effectiveness of mathematics education on the numerical sense and visual-spatial working memory of first-grade elementary school girls with mathematical problems. Method: The method of this re...

Introduction: The main aim of this study was to investigate the over generality of autobiographical memory among depressed, depressed with substance abuse, and normal boy adolescents. Method: 76 adolescent boys (25 depressed, 25 depressed with substance abuse, and 26 normal) selected of Kermanshah adolescents. Three groups were matched with consideration of age, gender, educational levels, and ...