نتایج جستجو برای: world demand
تعداد نتایج: 566116 فیلتر نتایج به سال:
Characterization and evaluation of a biological submerged filter was carried out on a full-scale pilot plant performing removal of biochemical oxygen demand (BOD) and total nitrogen (TN) from pre-treated urban wastewater. The average influent values of BOD5, chemical oxygen demand (COD) and TN were 370, 1,015 and 60 mg/L, respectively. The pilot plant produced good discharge quality during stea...
abstract nowadays, industries cannot play a crucial role in national and international competitions. the tourism industry is no exception. tourism industry development as the most important economic sector and income generation is one of the key challenges of economic development in the world. therefore, countries were successful that take advantage of the capabilities of tourism sector using ...
In recent centuries, many natural disasters such as floods and droughts have appeared and have had many adverse effects on many countries. Natural disaster is one of the major environmental challenges in the world and has serious socioeconomic consequences in countries. Evidence points to the fact that these natural disasters have a significant negative impact on crop yield, food security, ther...
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