نتایج جستجو برای: water environment

تعداد نتایج: 1033333  

Journal: :Eos, Transactions American Geophysical Union 2002

Journal: :IOP Conference Series: Earth and Environmental Science 2018

Journal: :Stochastic Environmental Research and Risk Assessment 2013

Journal: :Environmental Science and Pollution Research 2019

Journal: :Polish Hyperbaric Research 2016

Journal: :Journal of Geography (Chigaku Zasshi) 2014

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

Ships transport about 80 percent of world trade and transfer approximately three to five billion tons of ballast water internationally every year. Due to the likely presence of pollutants, the ballast water discharged by ships can have negative effects on aquatic ecosystems. This study was conducted on 10 ships that entered the Bushehr port to determine the effectiveness of the ballast water ex...

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