Zobrazeno 1 - 10
of 230
pro vyhledávání: '"John S. McCloy"'
Publikováno v:
Crystals, Vol 14, Iss 3, p 228 (2024)
Technetium-99 is a highly radioactive isotope with a long half-life that is common in nuclear waste. It volatizes at a low temperature, which poses a significant challenge to the clean-up and containment processes. Due to difficulties in purifying te
Externí odkaz:
https://doaj.org/article/82de8773e39c4da385ad3ac1f473b0d6
Autor:
Edward P. Vicenzi, Thomas Lam, Jamie L. Weaver, Andrew A. Herzing, John S. McCloy, Rolf Sjöblom, Carolyn I. Pearce
Publikováno v:
Heritage Science, Vol 10, Iss 1, Pp 1-15 (2022)
Abstract Dark and clear silicate glasses formed during an iron age vitrification event ≈ 1500 years ago at the Broborg hillfort near Uppsala, Sweden have been analyzed using a scanning electron microscope equipped with a micro-X-ray fluorescence (
Externí odkaz:
https://doaj.org/article/fb9f4e2860e2404b9c96ba459b294c34
Autor:
Jacqueline Cooke, Praneeth Ranga, Jani Jesenovec, John S. McCloy, Sriram Krishnamoorthy, Michael A. Scarpulla, Berardi Sensale-Rodriguez
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)
Abstract In this work, a systematic photoluminescence (PL) study on three series of gallium oxide/aluminum gallium oxide films and bulk single crystals is performed including comparing doping, epitaxial substrates, and aluminum concentration. It is o
Externí odkaz:
https://doaj.org/article/628595c80e6642d0b25df703d85053a3
Autor:
Lorena Nava-Farias, James J. Neeway, Michael J. Schweiger, José Marcial, Nathan L. Canfield, Carolyn I. Pearce, David K. Peeler, Edward P. Vicenzi, David S. Kosson, Rossane C. Delapp, John S. McCloy, Sam A. Walling, Clare L. Thorpe, Claire L. Corkhill, Russell J. Hand, Rolf Sjöblom, Albert A. Kruger
Publikováno v:
npj Materials Degradation, Vol 5, Iss 1, Pp 1-15 (2021)
Abstract Laboratory testing used to assess the long-term chemical durability of nuclear waste forms may not be applicable to disposal because the accelerated conditions may not represent disposal conditions. To address this, we examine the corrosion
Externí odkaz:
https://doaj.org/article/553fd3b92c854bda8ad2cdd413337ed6
Autor:
Daniel Carrasco, Eva Nieto-Pinero, Manuel Alonso-Orts, Rosalía Serna, Jose M. San Juan, María L. Nó, Jani Jesenovec, John S. McCloy, Emilio Nogales, Bianchi Méndez
Publikováno v:
Nanomaterials, Vol 13, Iss 6, p 1126 (2023)
An accurate knowledge of the optical properties of β-Ga2O3 is key to developing the full potential of this oxide for photonics applications. In particular, the dependence of these properties on temperature is still being studied. Optical micro- and
Externí odkaz:
https://doaj.org/article/904876944694452c8f8bb3a94241b85c
Autor:
John S. McCloy, José Marcial, Jack S. Clarke, Mostafa Ahmadzadeh, John A. Wolff, Edward P. Vicenzi, David L. Bollinger, Erik Ogenhall, Mia Englund, Carolyn I. Pearce, Rolf Sjöblom, Albert A. Kruger
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-18 (2021)
Abstract European Bronze and Iron Age vitrified hillforts have been known since the 1700s, but archaeological interpretations regarding their function and use are still debated. We carried out a series of experiments to constrain conditions that led
Externí odkaz:
https://doaj.org/article/31320ea7091548e0a36e406b6bc90cbd
Autor:
David L. Bollinger, Jessica Erickson, Nicholas Stone-Weiss, Arumala Josiah Lere-Adams, Sam Karcher, Idil Deniz Akin, John S. McCloy
Publikováno v:
Environmental Advances, Vol 6, Iss , Pp 100136- (2021)
Highly alkaline wastes known as bauxite residue are the abundant byproducts of refining bauxite into alumina through the Bayer process, and worldwide estimates of these bauxite residue stockpiles exceed 3 billion tons, with hundreds of millions of to
Externí odkaz:
https://doaj.org/article/389724f10ef7439f91b341fbf9ae3470
Autor:
Arumala J. Lere-Adams, Mostafa Ahmadzadeh, Natalie Smith-Gray, David Bollinger, Scott Boroughs, John S. McCloy
Publikováno v:
AIP Advances, Vol 11, Iss 3, Pp 035318-035318-8 (2021)
Glass-ceramic (GC) materials have the formability advantages of glasses and the opportunity for controlled crystallization of functional ceramic phases. Here, we obtain GCs containing the hard magnetic phase Sr-hexaferrite (SrFe12O19) from a borate g
Externí odkaz:
https://doaj.org/article/e6e10e8b1f5e4a409f55a01ccf0c01a8
Autor:
John S. McCloy
Publikováno v:
Journal of Non-Crystalline Solids: X, Vol 4, Iss , Pp - (2019)
The purpose of this review is to compare and contrast silicate natural glasses with so-called un-natural glasses, bringing together literature and common issues in geology and technical glass science and engineering. The review is organized into thre
Externí odkaz:
https://doaj.org/article/7b2f94478eb94700bea8229a6dd4dbda
Publikováno v:
Journal of Non-Crystalline Solids: X, Vol 4, Iss , Pp - (2019)
The Hanford site in Washington State houses ~56 million gallons of radioactive wastes stored in 177 underground tanks. The waste must be immobilized and permanently stored, and the plan is to separate the tank wastes into low activity waste (LAW) and
Externí odkaz:
https://doaj.org/article/328625165205423cb8b868438a11c39c