OBJECTIVE To assess the errors between estimates of amounts based on photographs and actual quantities of food presented to adults or eaten on the previous day. DESIGN A photographic atlas was constructed by taking digital photographs of three pre-weighed portion sizes of 212 traditional Lebanese dishes. In a first approach, ten portions of real pre-weighed foods were assessed using the photo...

This report reviews the results of six large blood pressuree surveys done on pediatric populations and points out factors responsible for differences in the blood pressure norms. The studies were selected on the basis of there being recent examinations of large numbers of children. Important differences in mean systolic pressures and 95th percentile values were found among the studies, which ma...

This report reviews the results of six large blood pressure surreys done on pediatric populations and points out factors responsible for differences in the blood pressure norms. Tbe studies were selected on the basis of there being recent examinations of large numbers of children. Important differences in mean systolic pressures and 95th percentile rallies were found among the studies, which ma...

background: a variable resolution x-ray (vrx) ct scanner provides a great increase in the spatial resolution. in vrx ct scanners, the spatial resolution of the system and its field of view (fov) can be changed according to the object size. one of the main factors that limit the spatial resolution of vrx ct scanner is the effect of the x-ray focal spot. materials and methods: a theoretical study...

OBJECTIVE To assess the extent of scrotal pain in men before and after vasectomy, to produce accurate data for the benefit of men considering this procedure, and hence improved informed consent about the outcomes, as chronic scrotal pain after vasectomy is a poorly quantified clinical problem. PATIENTS AND METHODS Between November 2004 and January 2006 nine surgeons carried out vasectomies in...

Background: A variable resolution X-ray (VRX) CT scanner provides a great increase in the spatial resolution. In VRX CT scanners, the spatial resolution of the system and its field of view (FOV) can be changed according to the object size. One of the main factors that limit the spatial resolution of VRX CT scanner is the effect of the X-ray focal spot. Materials and Methods: A theoreti...

The IEEE standard on piezoelectricity recommends methods to determine the coefficients of piezoelectric ceramics and the sizes of the samples to be used. A method to determine the difference between the actual coefficients and the coefficients determined using the IEEE standard is presented. The difference or error for samples of various shapes and sizes is presented. These errors and manufactu...

It’s obvious that road safety is causing large problems and costs in Iran with an enormous impact on the well-being of people, economy and productivity. The yearly number of fatalities and injuries is still unchanged. Motor vehicle injuries lead the list of injury deaths at the all ages during childhood and adolescence, even in children under 1 yrs of age. Understanding the actual of chil...

In this study we examine in covariance stationary time series the consequences of constructing confidence intervals for the population mean using the classical methodology based on the hypothesis of independence. As criteria we use the actual probability the confidence interval of the classical methodology to include the population mean (actual confidence level), and the ratio of the sampling e...

almost all countries have faced the urbanization. in the long run, changes in the production technology have caused migration from rural to urban areas. existing cities have grown and new ones have been created. this is named as “urban development” in the urban literature. cites are created because of economies of scale in production and consumption. there are different cities with different si...