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Methodology of Metal Criticality Determination
Environmental Science & Technology, 2012A comprehensive methodology has been created to quantify the degree of criticality of the metals of the periodic table. In this paper, we present and discuss the methodology, which is comprised of three dimensions: supply risk, environmental implications, and vulnerability to supply restriction. Supply risk differs with the time scale (medium or long),
T E, Graedel +13 more
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Metal-on-metal hip resurfacing: a critical review
Archives of Orthopaedic and Trauma Surgery, 2010In this article, a concise review of the current literature on metal-on-metal hip resurfacing (MoMHR) is given. In contrast to conventional total hip arthroplasty, older age, female sex and small femoral head sizes predispose to failure. Neck fracture and metal wear-related complications account for the most frequent reasons for re-operations. Although
Gavin J, Macpherson, Steffen J, Breusch
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Plutonium metal criticality measurements
Journal of Nuclear Energy, 1971Abstract The results of a series of critical mass measurements on alpha phase plutonium metal (5·9 wt. % Pu-240) are reported. The assemblies investigated were spheres and hemispheres either unreflected or reflected by combinations of steel and oil. The spherical critical masses are deduced from measurements on asymmetric spherical assemblies while ...
D.C. Hunt, M.R. Boss
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Critical metal blistering doses
Soviet Atomic Energy, 1975Critical He ion bombardment doses associated with blistering of Nb and stainless steel were measured. It was found that the critical doses for these materials are close together and in the range 1 to 4 x 10/sup 17/ ion/cm/sup 2/. (JRD)
B. A. Kalin +6 more
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2019
In modern high-tech products, rare metals play an increasingly pivotal role. To support the development of a highly sustainable society, where valuable natural resources are not wasted and most materials are recycled, new efficient, environment-friendly recycling technologies for rare metals are required. The authors have developed environment-friendly
Toru H. Okabe, Takanari Ouchi
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In modern high-tech products, rare metals play an increasingly pivotal role. To support the development of a highly sustainable society, where valuable natural resources are not wasted and most materials are recycled, new efficient, environment-friendly recycling technologies for rare metals are required. The authors have developed environment-friendly
Toru H. Okabe, Takanari Ouchi
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Physics World, 2003
IN THE mid-1970s, when the study of phase transitions was undergoing a renaissance, a young assistant professor at the University of Chicago asked a question that seemed purely academic: "What would happen to a metal if there was a phase transition at absolute zero?" The answer that John Hertz arrived at involved quantum theory, extra dimensions and a ...
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IN THE mid-1970s, when the study of phase transitions was undergoing a renaissance, a young assistant professor at the University of Chicago asked a question that seemed purely academic: "What would happen to a metal if there was a phase transition at absolute zero?" The answer that John Hertz arrived at involved quantum theory, extra dimensions and a ...
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Critical metals in the environment
2021The overall amount of metals and their variety used for technical applications has been subject to a steep increase during the past decades and is forecast to further develop. Growing metal demand for a wide range of high technology applications, including so-called ‘green’ technologies (e.g. PGM, REEs, Te) drives the economic value of these metals and
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Two Plutonium-Metal Critical Assemblies
Nuclear Science and Engineering, 1960Two plutonium-metal critical assemblies were studied at the Pajarito site in Los Alamos. Part I describes Jezebel, the bare plutonium assembly, and gives its observed characteristics along with a few comparisons with enricheduranium systems. Part II covers Popsy, a plutonium core in a thick normal-uranium reflector.
G. A. Jarvis +3 more
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