safety Article Injury/Fatality-Causing Incidents Involving the Rearward Movement of Agricultural Machinery: Types, Causes, and Preventive Measures Shawn G. Ehlers * and William E. Field Department of Agricultural and Biological Engineering, Purdue University, 225 South University Street, West Lafayette, ...
learning; smart drugs; brain injury; piracetam; Panax ginseng; nootropics; memory; Paullinia cupana; antioxidant activity; ayurvedic 1. Introduction At one time or another, everyone has dreamed of becoming more intelligent, learning more things in less time, thinking and reacting faster, and having...