AML January 10, 1967 Dear Neal: Enclosed is a short Progress -Report of our work ,.to date.pur.suant to Very truly yours, THIRD PROGRESS REPORT January-S. 1067 Contract No. SU'.@l't-L4.RY OF ACTN"ITY FOR THE QTJ-XRTER E-.IDI.\G December 31, 1966 Contract efforts during this period have been in three areas; literature monitoring, a continuation of efforts to produce an improved piezoelectric generator design, and planning for animal research studies. The results of acti-.,@ity in these areas af-e surnmariz4d separately below. A. Literature Review Many articles of peripheral relevance to this study have beeti scanned. The sources utilized during this period are largely composed of the Biomedical Engineering Journals and public2ations of NAS.A. and During this quarter became a subscriber to the services of the Kno%vledge Availability Systems Center of the University of Pittsburgh. The KASC searchis STA-R and IAA indexes and provides with documents- relevant to our interests. Searchine under several descriptors app2ropriate to this contract began with 1963 documents and is n.ow up to date. Descriptions of recent work of three research groups mentioned in our last -,ormal report are contained in Proceadin,as of the Annual Conference on En-aineering in Medicine :;,nd Biology, 1966. Th@ report of P. J. Racine and 1-1. L. Massie addressed the pro2blem of determining the chemicall activity present in the Koni'A-off- Reynolds Galvanic Electrode Systeni. Data from several -netal t),pes in in vitro experiments are discussed, oxidation of electrode metal to its ion and reduction of free oxygen were suggested as principal reactions. Weii 1-1. [,Co described a prototype "piezoelectric energy con2verter for electronic implarits. " P,.,of-asi.;or I