Zobrazeno 1 - 10
of 254
pro vyhledávání: '"Michael I Ojovan"'
Autor:
Sergey V. Yudintsev, Maximilian S. Nickolsky, Michael I. Ojovan, Olga I. Stefanovsky, Victor I. Malkovsky, Amina S. Ulanova, Lewis R. Blackburn
Publikováno v:
Ceramics, Vol 6, Iss 3, Pp 1573-1622 (2023)
The structural and chemical properties of zirconolite (ideally CaZrTi2O7) as a host phase for separated REE–actinide-rich wastes are considered. Detailed analysis of both natural and synthetic zirconolite-structured phases confirms that a selection
Externí odkaz:
https://doaj.org/article/0e31d9e3ff9e4cd5aaee9195a81c12ba
Publikováno v:
Ceramics, Vol 6, Iss 2, Pp 1152-1163 (2023)
Uranium-containing glass samples with an age of 140–145 million years were collected within the volcanic rocks of the largest volcanic-related uranium ore deposit in the world. Main features of their composition are high concentrations of silica an
Externí odkaz:
https://doaj.org/article/314ad6ad1d39442d8f8b400cf00e8424
Publikováno v:
Applied Sciences, Vol 14, Iss 10, p 4319 (2024)
For some chalcogenide glasses, the temperature dependence of the activation energy E(T) of viscous flow in the glass transition region was calculated using the Williams–Landel–Ferry (WLF) equation. A method for determining the activation energy o
Externí odkaz:
https://doaj.org/article/2dc4825a44b74c649a2f7b50f4b422ef
Autor:
Michael I. Ojovan
Publikováno v:
Encyclopedia, Vol 3, Iss 2, Pp 419-429 (2023)
Nuclear waste (like radioactive waste) is waste that contains, or is contaminated with, radionuclides, at activity concentrations greater than clearance levels set by the regulators, beyond which no further use is foreseen. Disposal is the emplacemen
Externí odkaz:
https://doaj.org/article/3f8f4d61435b4cc89ad709d258b2992f
Publikováno v:
Applied Sciences, Vol 14, Iss 3, p 1295 (2024)
By the method of molecular dynamics, computer simulation of the processes of isobaric cooling of argon particle systems under initial conditions with a temperature of 150 K at pressure values from 0.1 to 4 MPa to a temperature of 40 K with cooling ra
Externí odkaz:
https://doaj.org/article/c44465b1d9ad45db9e218250445b27bd
Autor:
Michael I. Ojovan, Sergey V. Yudintsev
Publikováno v:
Open Ceramics, Vol 14, Iss , Pp 100355- (2023)
We briefly overview the utilisation of glasses, ceramics and glass crystalline materials (GCMs) composed of both vitreous and crystalline phases focusing on nuclear waste immobilisation and potential use of some advanced waste forms for incorporation
Externí odkaz:
https://doaj.org/article/0ed7765764e242b09c5e40a092d552c5
Autor:
Michael I. Ojovan, William E. Lee
Drawing on the authors'extensive experience in the processing and disposal of waste, An Introduction to Nuclear Waste Immobilisation, Second Edition examines the gamut of nuclear waste issues from the natural level of radionuclides in the environmen
Autor:
Michael I. Ojovan
Publikováno v:
Ceramics, Vol 4, Iss 2, Pp 121-134 (2021)
A brief overview is presented of the modified random network (MRN) model in glass science emphasizing the practical outcome of its use. Then, the configuron percolation theory (CPT) of glass–liquid transition is concisely outlined, emphasizing the
Externí odkaz:
https://doaj.org/article/71c5f5df57b74e529092d4118ffb65ac
This book summarises approaches and current practices in actinide immobilisation using chemically-durable crystalline materials such as ceramics and monocrystals.As a result of the increasing worldwide growth of the nuclear industry, long-lived α-em
Publikováno v:
Applied Sciences, Vol 13, Iss 4, p 2742 (2023)
We present calculation results of the temperature interval δTg characterizing the liquid–glass transition in amorphous materials obtained on the basis of available data of the empirical parameters C1 and C2 in the Williams–Landel–Ferry (WLF) v
Externí odkaz:
https://doaj.org/article/d37a7d154c664b889cafa8bb27237e75