At an analytical level, the international dimensions of environmental policies may be divided into three categories, viz. national (or competitiveness), psychological (non-physical) and transboundary pollution problems (global externalities). It is argued that only the third problem (viz. degradation of regional or global commons) ought appropriately to be seen as being truly international (or ...

At present, there is no conventional scientific method to evaluate the area of the burnt regions of forests and in this field, the related organizations use different methods and variables. Also, the speed in performing the processes of area computing and damage evaluation, especially in the extensive damaged forest regions is very slow; consequently, the expression of results takes more ti...

reaction to fire of fire-retarded rigid pur foams and two types of metal faced rigid polyurethane foam core sandwich panel was evaluated by using cone calorimeter test method. the tests were carried out in various radiative heat fluxes from 15 to 75 kw/m2. the radiation rate effect on reaction to fire parameters, including time to ignition (tti), peak of heat release rate (prhr), total heat rel...

Abstract:Islamic painting is clearly influenced by the fundamental principles of Islamic thought. Not only this affects the meaning and content but also affects the form and structure of painting influenced the principles of Islamic thought. For example, the Quran as the main reference of Islamic thought expresses Islamic thought about color. We know that the color is the emission of the light ...

Since our hunter–gatherer ancestors began to develop agriculture more than 10,000 years ago, farmers have been battling with Nature to protect their cultivated plants against pests and diseases. Organisms from all kingdoms of life—from mammals and insects to bacteria, fungi and viruses—are attracted by the easy pickings that large fields of plants represent, and farmers have sought to contain t...

Zagros forests are one of the important natural ecosystems in Iran with high plant diversity and variety of plant communities. In recent decades, fire events have frequently occurred in some of these ecosystems. The purpose of this research is to investigate the composition and diversity of herbaceous species after nine years of fire occurrence in the forests of Zagros in western Iran. For this...

Background: Building fires are the most common threatening and distressing hazard in hospitals. Fire is one of the top 10 hazards that threaten Iranian hospitals. Nevertheless, no study has been done on the features of fires in Iran hospitals. So, this study aimed to investigate the characteristics of fires taking place in Iranian hospitals.  Materials and Methods:  In this cross-sectional stu...