In this paper, an advanced analysis of a novel hybrid compression-absorption refrigeration system (HCARS) for natural gas dew point control unit in a gas refinery is presented. This unit separates the heavy hydrocarbon molecules in the natural gas, which is traditionally carried out by natural gas cooling in a compression refrigeration cycle (CRS). The power input required for the refrigeration...

the first step in dealing with the behavior of an engine on ng mode is the installation of a suitable gas fueling system on the engine. two generations of gas fueling systems which were studied and installed on research engine were mixer type and sequential system type. the results, including performance, emissions and fuel consumption, were recorded and analyzed. the results showed that the se...

 Abstract Objective: The intervention program evaluated through a randomized controlled trial design, on 116 women aged 40-65, based on Intervention Map to increase consumption of calcium rich foods to prevent osteoporosis. Method: Osteoporosis knowledge and stages of change of calcium intake were as the effect variables and frequency of calcium rich foods consumption was as the outcome variabl...

background and aims: the prevalence of obesity among children and adolescents is increasing worldwide. one of the key lifestyle behaviors that helps prevent obesity and being overweight among children and adolescents is to avoid drinking sugar-sweetened beverages (ssbs) or to take, at most, one serving per day. the present study intended to evaluate knowledge and perceptions of high school girl...

Background and aims: Inappropriate or imbalanced consumption of foods may lead to several healthproblems, especially among adolescents, the complications of which will remain for several years.This study aimed to investigate perceptions, self-efficacy, and the status of junk food consumptionand their relationship with demographic variables in female high school students in Sha...

Introduction: Today, the growing amount of paper consumption and consequently deforestation and environmental destruction have imposed financial burden on different countries around the world. This study aimed to determine the level of knowledge, attitude, and performance of Yazd health volunteers on cutting down the consumption of paper. Materials and Methods: This descriptive-cross sectional...