The Sustainable Development Goal (SDG) 6.1, established by the United Nations General Assembly in 2015, targets universal and equitable access to safe affordable drinking water for all 2030. An essential factor achieving this goal is harnessing of “green” coagulants – naturally occurring, environmentally friendly materials which are effective use treatment, with good availability developing cou...

The government green purchase is widely considered to be an effective means of promoting sustainable consumption. However, how to identify the greener product is the biggest obstacle of government green purchase and it has not been well solved. A quantitative evaluation method is provided to measure the green degree of different products of the same use function with an indicator system establi...

Precipitation products with high resolution for urban areas remain an important and challenging issue. The main purposes of this study are to evaluate the accuracy China Meteorological Forcing Data Set (CMFD) in Shanghai megacity improve CMFD precipitation. With rain gauge observations 2013–2018 period, we error detection ability at sub-daily, daily, monthly scales, examine spatial variation pe...

tetracyclines (tcs) are broad-spectrum antibiotics that are used widely in veterinary medicine. the present study was carried out to trace the residues of oxytetracycline (otc) and tetracycline (tc) in pasteurized milk that is marketed in tehran with the use of a high performance liquid chromatography (hplc). ninety milk samples were collected during five sequential days from the products of si...