Results 131 to 140 of about 339,446 (337)

Certification of Uranium Isotope Amount Ratios in a Suite of Uranium Ore Concentrate Certified Reference Materials

open access: green, 2021
Ruoxi Zhang   +34 more
openalex   +2 more sources

Practical Applications of Secondary/Extractive Electrospray Ionization (SESI): A Versatile Tool for Real‐Time Chemical Analysis

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo   +5 more
wiley   +1 more source

Characterization of Fuel Rods Supported by Dimple‐Less Spacer Grids and Subjected to Nonlinear Vibrations

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT An experimental campaign was undertaken to demonstrate the applicability of the Bouc–Wen hysteretic model to describe the hysteretic system of the recent Framatome dimple‐less spacer grid design for Pressurized Water Reactors. The experimental setup subjected a reduced‐length fuel rod, supported at both ends by dimple‐less grids, to forced ...
Giovanni Ferrari   +3 more
wiley   +1 more source

Cyclic oxygen vacancy reconstruction in MnO2 polymorphs builds electron reservoirs to drive ionic charge redistribution for stepwise UO22 + reduction

open access: yesEcotoxicology and Environmental Safety
Effective uranium (UO22+) recovery from aqueous waste is vital for resource sustainability and environmental safety. Although oxygen vacancies enhance the redox activity of UO22+, their long–term stability and ability to regenerate remain unclear. Herein,
Shuang Zhang   +8 more
doaj   +1 more source

Antibacterial Micro/Nanorobots: Innovations, Challenges, and Future Perspectives in Combatting Infection

open access: yesNano Select, EarlyView.
Antibacterial micro/nanorobots (MNRs) represent a breakthrough in antibacterial therapy, making precise delivery of drugs to the infection site. This review systematically summarizes the material composition, actuation, and applications of MNRs in combating biofilms and drug‐resistant infections while emphasizing the existing challenges of ...
Yichao Chen   +4 more
wiley   +1 more source

Influence of Copper and Copper Oxides on Adsorption and Diffusion Behavior of Se(Ⅳ/Ⅵ) in Tamusu Clayrock

open access: yesHe huaxue yu fangshe huaxue
The Tamusu clayrock of Inner Mongolia is a significant candidate host rock for geological disposal of high-level radioactive waste in China. 79Se(Ⅳ) and 79Se(Ⅵ) are key concerns in the long-term safety assessment of repositories due to their relatively ...
Yu-zhen SUN   +5 more
doaj   +1 more source

Research on the degradation mechanism, product effects and optimization strategy of the tributyl phosphate solvent system in the PUREX process

open access: yesSmart Molecules, EarlyView.
This paper focuses on reviewing the degradation mechanisms of tributyl phosphate and its diluents, the analytical technique suitable for characterizing degradation products, and the impact of degradation products on the post‐treatment process, offering a theoretical foundation and technical insights in optimizing the plutonium uranium redox extraction ...
Tian Lan, Jiaxin Liu, Yi Liu
wiley   +1 more source

Vapor core propulsion reactors [PDF]

open access: yes
Many research issues were addressed. For example, it became obvious that uranium tetrafluoride (UF4) is a most preferred fuel over uranium hexafluoride (UF6). UF4 has a very attractive vaporization point (1 atm at 1800 K).
Diaz, Nils J.
core   +1 more source

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