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Donald Pearce Shiley (January 19, 1920 – July 31, 2010) was the inventor of the Bjork–Shiley valve, a prosthetic heart valve. He was a 1951 alumnus of the University of Portland , where he studied engineering.
Björk–Shiley valve, as depicted in patent #US003824629. The Björk–Shiley valve is a mechanical artificial heart valve. The valve was co-invented by American engineer Donald Shiley and Swedish heart surgeon Viking Björk. Beginning in 1971, it has been used to replace aortic valves and mitral valves. It was the first successful tilting ...
In 2011, Free Shipping Day became a billion-dollar shopping holiday with $1.072 billion in sales, [5] followed by $1.01 billion during Free Shipping Day 2012. [ 6 ] In 2013, Knowles changed the format of Free Shipping Day to only include merchants that could waive all minimum order requirements and guarantee delivery by Christmas Eve. [ 7 ]
Based on ComScore data 65% of eCommerce transactions in Q4 2017 in the United States were with free shipping. This figure has been consistent for the last few years (ranging between 58% and 69%). Moreover, US respondents asked in the survey listed free shipping (54% mentions) as a most important factor for online shipping.
Shiley may refer to: Bjork–Shiley valve, mechanical heart valve prosthesis; Donald Shiley, one of the co-inventors of Pfizer's Bjork-Shiley heart valve;
Rehabilitation is a relatively new medical specialty, becoming certified as such in 1947. [6] Immediately following World War II, which had a significant impact on the specialty of rehabilitation, General Omar Bradley, the head the Veterans Administration, recruited Dr. Paul Magnuson, [7] a U.S. Army orthopaedic surgeon, who created the infrastructure for the VA to provide rehabilitation for ...
Shiley Hall is an academic building on the University of Portland campus in Portland, Oregon, United States. [1] References This page was last edited on 13 June 2024 ...
Shirley Graham Du Bois (born Lola Shirley Graham Jr.; November 11, 1896 – March 27, 1977) was an American-Ghanaian writer, playwright, composer, and activist for African-American causes, among others.