U. Rajesh Kumar, R. Palanivel, Uddin, Sayed Mohammad Nazim, Department of Environmental Science, Asian University for Women, Chattogram, Bangladesh Uliyathel, SAJITH, University of calicut, Kerala. India. Uma T. Palni, Manisha Upadhyay and Umar, A. B., Department of Biological Sciences, Bayero University, Kano, Nigeria Umar, I., Department of Crop Protection, MAUTECH, Yola, Nigeria Upadhay, Manish, HOD & Associate Professor,Dr.C.V.Raman University Kargi Road, Kota, Bilaspur (C.G), India. Upadhyay, Arun Kumar, LCIT Bilaspur, CSVTU Bhilai (C.G), India. Upadhyay, Kanchan, Department of chemistry, Govt. V.Y.T.PG Autonomous College, Durg, India, 491001 Upadhyay, Manish, Department of Chemistry, Dr. C.V. Raman University, Kota, Bilaspur (C.G.), India. Upadhyay, Manish, Asstt. Prof & Head, Department of Chemistry Dr. C.V. Raman University. Kota, Bilaspur (C.G.) India Upadhyay, Manish, Asstt. Prof & Head, Department of Chemistry Dr. C.V. Raman University, Kota, Bilaspur (C.G.) India. Upadhyay, Mukesh Kumar, Department of Life Sciences, Jaipur National University,Jaipur,India Usmani, Zeba, Department of Environmental Science and Engineering, Indian School of Mines, Dhanbad-826004, Jharkhand, India