Recently, a new class of lithium chlorides and bromides (e.g., Li3YCl6 and Li3YBr6) were reported to be promising solid-state electrolytes with high ionic conductivity in all-solid-state battery cells. However, their...

In the past several decades, the U3Si2 has received much attention for the development of accident tolerant fuel in light water reactors because of its superior thermal conductivity and higher uranium density. In this study, density functional theory calculations have been carried out to study the occupation and diffusion behaviors of fission products Xe and Cs in U3Si2. It is revealed that the occupation sites of Xe and Cs depend on the chemical environment, and both of Xe and Cs are favorable to substitute for U or Si sites. The diffusions of Xe and Cs in U3Si2 are predicted to be via the vacancy mechanism and both of Xe and Cs form cluster easily. As compared with Cs, the Xe exhibits a smaller solubility, faster diffusion as well as stronger clustering tendency, which may cause larger bubble size for Xe than Cs under the same conditions in U3Si2. The differences in the diffusion behaviors between Xe and Cs mainly result from their different valence electronic configurations and different atomic radii.

GeSe and SnSe have great potential in nuclear detector devices. Under irradiation, the formation and migration of point defects may affect their properties and performance significantly. In this study, a comparative study of vacancy formation and migration in GeSe and SnSe has been carried out using first-principles methods. It is shown that in both compounds cation vacancies form much easier than anion vacancies, and that cation vacancies have a lower barrier to migration than anion vacancies in GeSe and SnSe. For both Ge vacancy and Sn vacancy, the migration is anisotropic and the [322] direction is the most favorable migration pathway. The migration energy barrier are 0.54 eV for Ge vacancy and 0.46 ~ 0.52 eV for Sn vacancy, suggesting that vacancy clusters are relatively easy to form in both compounds, which may influence the application of GeSe and SnSe in nuclear detector devices.

The aim of the study: This study was conducted to evaluate oxidative stress damage model caused by reactive oxygen species production was prepared by heating injury and protective effect of SCP on spermatozoa membrane structure and function in vitro. Materials and methods: mouse eupyrene sperm suspensions were prepared and were randomly divided into six groups. The control group was maintained with PBS. The positive medicine group was received PBS contained vitamin E (0.25 mg /ml) .The SCP group was then given SCP (0.2, 0.4 and 0.8 mg /ml) respectively. All the groups except control group were treated with using heat stress injury. Degree of injury of spermatozoa membrane lipid peroxidation was detected. Results: The vitality of total superoxide dismutase (T-SOD) was increased and the quality of malondialdehyde (MDA) was decreased in different degree with each concentration of SCP. The protective effect of 0.4 mg /ml and 0.8 mg /ml SCP on spermatozoa membrane was obviously surpass to positive medicine group. These findings indicate that SCP could be potentially useful for the treatment of oxidative stress damage in spermatozoa.