one very significant issues in most educational systems, the question is educational achievement levels of students in exams. the educational system is one of the most important indicators of education performance and evaluation of teaching and the learning is the fact that the performance of the system output in each year. the method of the research is descriptive-survey. the research communit...

A brief review of previous studies shows that topographic features play an important role in the amplification (de-amplification) seismic waves. Most researchers who have focused on effects paid attention to distribution isolated features, whereas what is seen nature often more complicated. It known 2D or 3D geological structures further contribute ground motion. The main objective this study i...

Background: Osteoporosis and subsequent fractures increased mortality disability. Along with this fact, the demand for diagnostic tests has also in recent years, which created a heavy financial burden on health system. Objectives: The aim of research was to evaluate compatibility indications performing bone density measurement Arak city criteria international sociality clinical densitometry (IS...

Introduction: Obesity is a complex disease with multifactorial etiology, which sometimes the cause and effect of another such as diabetes. Aim: The present study was conducted aim comparing effectiveness self-compassion therapy interpersonal psychotherapy on emotional regulation cognitive fusion in obese patients. Method: research method applied semi-experimental pre-test, post-test design cont...

The Mighan playa/lake is characterized as a closed catchment. In the recent years, the rapid industrialization and urbanization has resulted in a pollution area in the city of Arak. In this work, we focus on six regions around the playa/lake to study the distribution of heavy metals in the waters and their contamination risk. A total of 32 water samples are analyzed to determine the conta...

In order to investigate concentrations, variability, sources, and human health risk of trace elements, 38 atmospheric dust samples were collected around Arak industrial area. The average concentrations Cd~Zn, As, Pb 3.3, 2.5, 2.4 times higher than the corresponding geochemical background, respectively, while Co, Cu, Ni, Hg lower. Based on geo-accumulation index (Igeo), elements classified betwe...

This article demonstrates the feasibility of converting Iran’s 40MWt heavy-water research reactor at Arak (the IR-40) to use low-enriched uranium fuel in order to slow the production of weapon-usable plutonium. Two methods are proposed, and both retain identical power density, thermal-hydraulic, and safety profiles as the original design and require no physical alteration of the core. They can ...