412 research outputs found
English author Evelyn Waugh visits Georgetown University
No full textAlso pictured: Gerard F. Yates, S.J.; University President Lawrence C. Gorman, S.J.; and Edmund A. Walsh, S.J
#714 American Diplomacy Since 1900.
No full textParticipants include: Dr. Jules Davids, Professor of History, Edmund A. Walsh School of Foreign Service and author of America and the World of Our Time Rev. Harry J. Sievers, S.J., Department of History, Bollarmine College and author of Benjamin Harrison: Soldier and Statesman Dr. Harry Kirwin, Professor of History, Loyola College, Baltimore, and author of Conceived in Liberty, and Readings in American Histor
#769 Old Communism: New Party Program?
No full textParticipants include: Rev. Joseph S. Sebes, S.J., Regent, Edmund A. Walsh School of Foreign Service, Georgetown University Dr. Stefan Possony, Author, and Professor of International Politics, Georgetown University Dr. Lev Dobriansky, Professor of Economics, Georgetown Universit
#532 Jefferson and Hamilton.
No full textParticipants include: Mr. Irving Brant, Biographer of James Madison and Expert on the Founding Fathers of America Dr. Frank Monaghan, Historian of the 18th Century Dr. W. Richard Walsh, Department of History, Georgetown University, Author of Upcoming article on T. Jefferson in the South Carolina HIstorical Magazin
#1048 Yanqui, Come Back!
No full textParticipants include: William B. Walsh, M.D. Founder and President of Project Hope, and author of the book, Yanqui, Come Back Patrick J. Doyle, M.D. Chairman of the Department of Community Medicine and International Health, Georgetown University School of Medicine Mr. Joseph T. Geuting, Jr., Manager, Utility Airplane Council, Aerospace Industries Association of America; and Vice President and Director of Project Hop
#798 Communist China Today.
No full textParticipants include: Rev. Joseph S. Sebes, S.J., Professor of Far-Eastern History, Regent, Edmund A. Walsh School of Foreign Service, Georgetown University Dr. Peter S.H. Tang, Author of Communist China Today, and Director of the Research Institute on the Sino-Soviet Bloo
A numerical investigation into key factors controlling hard rock excavation via electropulse stimulation
No full textElectropulse stimulation provides an energy-efficient means of excavating hard rocks through repeated application of high voltage pulses to the rock surface. As such, it has the potential to confer significant advantages to mining and drilling operations for mineral and energy resources. Nevertheless, before these benefits can be realized, a better understanding of these processes is required to improve their deployment in the field. In this paper, we employ a recently developed model of the grain-scale processes involved in electropulse stimulation to examine excavation of hard rock under realistic operating conditions. To that end, we investigate the maximum applied voltage within ranges of 120–600 kV, to observe the onset of rock fragmentation. We further study the effect of grain size on rock breakage, by comparing fine (granodiorite) and coarse grained (granite) rocks. Lastly, the pore fluid salinity is investigated, since the electric conductivity of the pore fluid is shown to be a governing factor for the electrical conductivity of the modeled system. This study demonstrates that all investigated factors are crucial to the efficiency of rock fragmentation by electropulsing.</p
A numerical investigation into key factors controlling hard rock excavation via electropulse stimulation
No full textISSN:1674-7755ISSN:2589-0417ISSN:2589-041
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