The discovery of high critical temperature in cubic HS under high pressures attracts significant attention. Of particular recent interest is to search for superconductors stabilized at low pressure in order to approach practical applications. To examine the doping effect on the stability and superconductivity of HS, we construct HSX by replacing half of the S atoms with an X atom (X = Si, Ge, Sn, P, As, Sb, Te, Cl, Br and I). In addition to previously reported compounds, we identified seven new superconductors that are dynamically stable below 200 GPa, , 3̄ HSAs, HSSb, HSI, HSSn, HSTe, HSCl, HSBr. Among these, HSSb exhibits of 91 K at 200 GPa, and increases to 115 K as pressure decreases to 40 GPa. Electron-phonon analysis indicates that the coupling between the electron of Sb atoms and the associated low-frequency phonons is responsible for the enhancement of the superconductivity. Additionally, the superconductivity of HSSX is closely related to the electronegativity of X in the same main group, where X with a larger electronegativity results in a strong H-X bond, resulting in a higher superconductivity.
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http://dx.doi.org/10.1039/d4cp04217d | DOI Listing |
J Biomed Mater Res A
January 2025
Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland.
Bone tissue regeneration can be affected by various architectonical features of 3D porous scaffold, for example, pore size and shape, strut size, curvature, or porosity. However, the design of additively manufactured structures studied so far was based on uniform geometrical figures and unit cell structures, which often do not resemble the natural architecture of cancellous bone. Therefore, the aim of this study was to investigate the effect of architectonical features of additively manufactured (aka 3D printed) titanium scaffolds designed based on microtomographic scans of fragments of human femurs of individuals of different ages on in vitro response of human bone-derived mesenchymal stem cells (hMSC).
View Article and Find Full Text PDFCurr Pharm Teach Learn
December 2024
School of Pharmacy, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA 15282, United States of America. Electronic address:
Introduction: Accreditation Council for Pharmacy Education's (ACPE) standards require pharmacy schools to assess Advanced Pharmacy Practice Experience (APPE) readiness. This paper describes the development and implementation of a Capstone Exam for assessing APPE-readiness and exploration of potential correlations between student performance on the Exam and performance measures within the didactic curriculum.
Methods: Faculty developed a Capstone examination aligned to the Pre-APPE Domains in Appendix A of the ACPE standards consisting of five stations assessing skills, which include: interviewing, counseling, prescription checking, professional communication, and inpatient order verification.
ACS Omega
December 2024
Research Center for Advanced Computing Infrastructure, JAIST, 1-1 Asahidai, Nomi 923-1211, Ishikawa, Japan.
There has been a marked increase in interest in high-temperature superconductors over the past few years, sparked by their potential to revolutionize multiple fields, including energy generation and transportation. A particularly promising avenue of exploration has emerged in the form of ternary superhydrides, compounds composed of hydrogen along with two other rare-earth elements. Our investigation focuses on the search for Y-Th-H ternary compounds; employing an evolutionary search methodology complemented by electron-phonon calculations reveals a stable superhydride, 6̅2-YThH, capable of exhibiting a critical temperature ( ) as high as 222 K at 200 GPa along a few low- novel hydrides.
View Article and Find Full Text PDFMaterials (Basel)
November 2024
Zhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications, Ningbo Key Laboratory of Special Energy Materials and Chemistry, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
This study investigated the influence of preformed composition and pore size on the microstructure and properties of SiC/SiC composites fabricated via reactive melt infiltration (RMI). The process began with the impregnation of SiC fiber cloth with phenolic resin, followed by lamination and pyrolysis. Subsequent steps included further impregnations with phenolic resin, SiC slurry, and carbon black slurry, each followed by additional pyrolysis.
View Article and Find Full Text PDFPhys Chem Chem Phys
January 2025
Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
The discovery of high critical temperature in cubic HS under high pressures attracts significant attention. Of particular recent interest is to search for superconductors stabilized at low pressure in order to approach practical applications. To examine the doping effect on the stability and superconductivity of HS, we construct HSX by replacing half of the S atoms with an X atom (X = Si, Ge, Sn, P, As, Sb, Te, Cl, Br and I).
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