Volume 12 Number 1 (Jan. 2021)

Article#	Type	Article Title & Authors (Volume 12 Number 1 (Jan. 2021))	Page
1310	Article	What does the Shinyei PPD42NS Low-Cost Dust Sensor Really Measure? by Michaël Canu Boris Gálvis Malika Madelin	1
1311	Article	Assessment of Soil Loss Rates in Asreh Watershed (North Jordan Badia) Using RUSLE and GIS by Saad M. AlAyyash	10
1312	Article	Impact of 17β-Estradiol on Natural Water’s Heterotrophic Nitrifying Bacteria by Ziyi Dong Changhao Xiao Weihua Zeng Jinbo Zhao	17
1313	Article	Diatomite Chemical Activation for Effective Adsorption of Methylene Blue Dye from Model Textile Wastewater by Parisa Ebrahimi Anand Kumar	23
1314	Article	Study the Level of Air Pollution from Al Hassan Industrial Estate in Irbid-Jordan by Sana’a Odat	29