abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

abstract al- muntazam by ibn al -jawzi is one of the greatest the book ancient book of texts on history of islam in the 6th century.it is very important one;because of including rare reports which are not found any where.in addition to historical reports,his outlook , in which embodies information on mythologies, milal wa nihal (sects and creeds), geography, and political, social and religiou...

Expended Abstract Introduction: One of the most important goals of today’s societies is to achieve a happy society, a society where the happiness of its people will improve the quality of life and labor productivity, will boost economic growth and, ultimately, will lead to sustainable development. In this regard, government expenditures and the amount of government intervention in the econom...

The relationship between the function of the public and private section and exploring this relationship has been a long discussion in macroeconomic. In this paper we attempted to consider the effect of fiscal policies on private section investment in Iran. The fiscal policies include a change in the government’s income and spending, In fact, the main purpose of this paper is to study the degree...