Author:Bowles, BA; Attwell, CWPDate:Nov 1978This report presents a comparison of the three capacitive matching networks most commonly used with electrically small loop antennas. The three networks are considered as special cases of a universal capacitive matching network which together ...Read more
Author:Scheepers, JCE; Van Graan, CHDate:Oct 1978The safety departments of 31 mines were visited, and the data obtained was used to determine to what extent safety gloves were being used in the gold mining industry. The frequency of occurrence of hand injuries amongst black workers of the ...Read more