The gas reservoir of Upper Triassic Xujiahe Fm in the Sichuan Basin is characterized by “accumulation in the early stage, entrapment in the middle stage and activation in the late stage”. In order to provide guidance for the prediction of hydrocarbon enrichment zone of Xujiahe Fm, we first plo...

This work introduces a combination of three factors for explaining the possible causes of “magnetic domains” presented in experimental reports. The first factor is the combination of a ferromagnetic (FM) interaction between first neighbors with an antiferromagnetic (AFM) interaction at relativ...

Ambient radio signals, such as commercial FM radio broadcasts, provide an attractive opportunity of infrastructure-free indoor positioning with global coverage. While feasibility of FM-based indoor positioning has already been demonstrated in several studies, they provided little insight into th...

Recently a compressed index for similar strings, called the FM-index of alignment (FMA), has been proposed with the functionalities of pattern search and random access. The FMA is quite efficient in space requirement and pattern search time, but it is applicable only for an alignment of strings ...

GeneXpert is one of the recent technological instruments used to diagnose tuberculosis in a short span of time. In this study, the performance of GeneXpert MTB/RIF assay for the diagnosis of extrapulmonary tuberculosis (EPTB) was compared with light-emitting diode Fluorescent Microscopy (LED-FM)...

Nuclear forensics goals for characterizing samples of interest include qualitative and quantitative analysis of major and trace elements, isotopic analysis, phase identification, and physical analysis. These samples may include uranium oxides UO2, U3O8, and UO3, which play an important role in t...

Thin films of uranium cerium mixed oxides UxCe1−xO2±y have been prepared by DC sputtering and characterized by X-ray photoelectron spectroscopy (XPS). Reduction and oxidation properties were analysed by exposing the films to atomic hydrogen and to atomic oxygen, respectively. Possible interacti...

Atoms sputtered from solids by energetic ion irradiation often partition across electronically excited states. We developed a resonance ionization method to measure the population of the uranium 5K5 state (620 cm−1) relative to the 6L6 ground state for atoms sputtered from metallic and oxide sur...

Thorium-uranium oxide pellets with high densities were prepared at the Canadian Nuclear Laboratories (CNL) by co-milling, pressing, and sintering at 2023 K, with UO2 mass contents of 0, 1.5, 3, 8, 13, 30, 60 and 100%. At the Joint Research Centre, Karlsruhe (JRC-Karlsruhe), thorium-uranium oxide...

The concept of a new method, the CARBEX (CARBonate EXtraction) process, was proposed for reprocessing of spent uranium oxide fuel. The proposed process is based on use of water solutions of Na2CO3 or (NH4)2CO3 and solvent extraction (SE) by the quaternary ammonium compounds for selective recover...

The oxidation kinetics of uranium surfaces modified by pulsed laser nitriding in air at temperatures of 420, 440, 450 and 460 K has been investigated. X-ray diffraction (XRD), Auger electron spectroscopy (AES) and scanning electron microscopy (SEM) were used to characterize the structure, morpho...

In the Fukushima Daiichi nuclear power station accident in March 2011, fuel debris was formed when fuel materials reacted with various structural materials in reactor core. Fuel debris retrieval is expected to start in 2021 for decommissioning of the damaged plants. To perform this activity safe...

This research is focused on understanding uranium oxidation to predict the behavior of uranium contaminated Mg alloy waste in confinement matrices. The environment of the matrix proposed for the magnesium encapsulation, based on geopolymer material, imposes basic conditions and the presence of f...

Oxidation of UC was studied from 873 to 1173 K in air and in 10 Pa oxygen using a High Temperature Environmental SEM (HT-ESEM). Conversion to U3O8 improved when using 873 K as the oxide product was a fine powder. At higher temperatures (973 K to 1173 K) oxidation slowed due to a densification pr...

Enhanced uranium oxide fuel types are being tested in the Halden Research Reactor in Norway with the aim is to assess the effect that these enhancements have on fuel performance. Fuel temperatures, rod pressures and dimensional changes are being monitored online and an extensive post-irradiation...

We present an investigation into the pseudo-capacitive energy storage potential of silver (Ag) and silver oxide (Ag2O) thin film electrode materials prepared by reactive magnetron sputtering. The growth mode and morphology of the prepared films were investigated using the scanning electron micro...

An antibacterial composite material based on the incorporation of diatomite (DE), graphene oxide (GO), and silver nanoparticles (AgNPs) was developed. It can significantly increase the antibacterial capability of DE and separation efficiency of GO and AgNPs. GO improves the stability of AgNPs an...

A novel low temperature micro- and nano-patterning approach of metal silver thin films is demonstrated. The process involves local deposition of carbon mask created in situ using the e-beam of scanning electron microscope followed by radio frequency air plasma oxidation. We show that by selectin...

A series of bimetallic silver-platinum catalysts based on pure-silica mesostructured cellular foam (MCF) with various Ag/Pt atomic ratios were prepared, tested in methanol oxidation and propene oxidation and characterized by UV–vis spectroscopy, X-Ray Diffraction (XRD), X-ray Absorption Spectro...

The energy storage potential of silver oxide (Ag2O) thin film electrodes, deposited via radio frequency reactive magnetron sputtering, was investigated in an ionic electrolyte (1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide for supercapacitor applications. X-ray diffraction (XRD),...