Jilin University

About: Jilin University is a education organization based out in Changchun, China. It is known for research contribution in the topics: Catalysis & Apoptosis. The organization has 101453 authors who have published 88966 publications receiving 1444456 citations. The organization is also known as: Jílín Dàxué.

Pressure-induced decomposition of solid hydrogen sulfide

Abstract: Solid hydrogen sulfide is a typical molecular crystal, but its stability under pressure remains controversial. In particular, the recent experimental discovery of high-pressure superconductivity at 190 K in an ${\mathrm{H}}_{2}\mathrm{S}$ sample (arXiv:1412.0460) inspired efforts to revalidate this controversial issue, the pressure at which ${\mathrm{H}}_{2}\mathrm{S}$ decomposes and the resultant decomposition products urgent need to be evaluated. In this paper we performed an extensive structural study on different stoichiometries of HnS with $ng1$ under high pressure using ab initio calculations. Our results show that ${\mathrm{H}}_{2}\mathrm{S}$ is stable below 43 GPa and at elevated pressure it decomposes into ${\mathrm{H}}_{3}\mathrm{S}$ and sulfur. ${\mathrm{H}}_{3}\mathrm{S}$ is stable at least up to 300 GPa, while other H-rich compounds, including ${\mathrm{H}}_{4}\mathrm{S}, {\mathrm{H}}_{5}\mathrm{S}$, and ${\mathrm{H}}_{6}\mathrm{S}$, are unstable in the pressure range of this study.

Representations of hom-Lie algebras

Abstract: In this paper, we study representations of hom-Lie algebras. In particular, the adjoint representation and the trivial representation of hom-Lie algebras are studied in detail. Derivations, deformations, central extensions and derivation extensions of hom-Lie algebras are also studied as an application.

Water-in-Salt Electrolyte for Potassium-Ion Batteries

Abstract: Concentrated potassium acetate as a water-in-salt electrolyte provides a wide potential window from −1.7 to 1.5 V vs Ag/AgClKCl sat.. It facilitates the reversible operation of KTi2(PO4)3, an anode of potassium-ion batteries, that otherwise only functions in nonaqueous electrolytes.

Design and test of a high-performance piezoelectric micropump for drug delivery

Abstract: With a micropump, the release rate of drug delivery is able to be controlled easily to maintain the therapeutic efficacy. A high-performance piezoelectric cantilever-valve micropump was investigated for this purpose. The effect of valves on the output performance of the PZT micropump was analyzed at first. With taking into account the influence of liquid added mass and added damping on the natural frequency of the valves and actuator, the design method of the cantilever valve was presented. Two micropumps were designed and fabricated for comparing experiments. The micropump with cantilever valves 2.5 mm in length obtained higher output values (the maximum flow rate and backpressure is 3.5 ml/min and 27 kPa, respectively) and had two optimal frequencies (0.8 and 3 kHz). While the micropump with cantilever valves 4.5 mm in length had only one optimal frequency (0.2 kHz), at which the micropump achieved lower output values (the maximum flow rate and backpressure is 3.0 ml/min and 9 kPa, respectively). The study results suggest that the output values and optimal frequency of micropump can be improved by the design of the cantilever valves.