1. Department of Environmental Science and Engineering, The University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
2. Department of Chemistry and Biochemistry, The University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
3. Department of Psychology, The University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
4. Department of Mathematical Sciences, The University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
5. Department of Economics, Applied Statistics and International Business, New Mexico State University, Las Cruces, New Mexico 88003, United States