According to international standards, sulfur in fuels used in the transportation industry, as
one of the most important polluting industries, should be reduced to around 10 ppmw, while …

Mathematical models can be described as a description of a system with mathematical
language. This is done by introducing the system under study with a series of equations …

In order to optimize the amount of dopant, 3 catalysts with different weight percentages of
dopant entered the test medium and it was found that the increase of silver, cerium, nickel. It …

There are many ways to reduce the coefficient of friction as a result of pressure drop in
internal flows and thrust force in external flows. For example, film suction, injection of gas …

Fluid molecules adhere to objects due to their viscosity when passing through them, thus
causing friction between the fluid and the body. This friction depends on the type of surface …

Introduction: Suicide affects the lives of many individuals all over the world and is a severe
public health concern. Among all the ages, youth suicide is one of the severe topics to be …

The COVID-19 pandemic has resulted in multiple physical and psychological stressors,
which require quantification and establishment of association with other psychological …

Although parenting programs have been supported as an effective family-based intervention
for children's behavioral problems, they are underutilized in developing countries. This …

The negative impact of the COVID-19 pandemic on individuals' psychosocial functioning
was widely attested during the last year. However, the extent to which individual differences …

COVID-19 was declared a pandemic by the World Health Organization (WHO) on 30
January 2020. The lifestyle of people all over the world has changed since. In most cases …