The development of materials with high ambipolar mobility is pivotal for advancing multifunctional applications, yet such materials remain scarce. Presently, cubic boron arsenide (BAs) stands out as the premier ambipolar material, demonstrating an ambipolar mobility of ∼1600 cm V s at room temperature [ 2022, 377, 433 and 2022, 377, 437]. Herein, we illustrate that semiconducting AlBC, featuring a nonclathrate B-C framework in which a C atom bonds to the vertices of four distorted hexagonal antiprism B units via quasi-sp hybridization, is predicted to possess ambipolar carrier transport behavior.
View Article and Find Full Text PDFAdvancing the compositional space of a compound class can result in intriguing superconductors, such as LaH. Herein, we performed a comprehensive first-principles structural search on a binary B-C system with various chemical compositions. The identified diamond-like BC, named -BC, is thermodynamically superior to the synthesized BC and BC.
View Article and Find Full Text PDFIn Unilateral (UNI) exercises are more effective than bilateral (BI) exercises in improving athletic performance is debatable. this meta-analysis investigated the effects of UNI and BI exercises on different effect indicators of jump ability, sprint ability, maximal force, change of direction ability, and balance ability. PubMed, Google Scholar, Web of science, CNKI, Proquest, Wan Fang Data.
View Article and Find Full Text PDFThe purpose of this study was to compare the impact of velocity-based resistance training (VBRT) and percentage-based resistance training (PBRT) on anaerobic ability, sprint performance, and jumping ability. Eighteen female basketball players from a Sport College were randomly divided into two groups: VBRT (n = 10) and PBRT (n = 8). The six-week intervention consisted of two sessions per week of free-weight back squats with linear periodization from 65% to 95%1RM.
View Article and Find Full Text PDFThe study compared the effects of 6-week (2 sessions/week) velocity-based resistance training (VBRT) and percentage-based resistance training (PBRT) on athletic performance in Sport-College female basketball players. Fifteen participants were assigned to the VBRT ( = 8) or PBRT ( = 7) groups. The load in VBRT group were determined through the sessional target velocity and velocity loss monitoring, whereas PBRT group used a fixed-load based on percentage of 1-repetition maximum (1RM).
View Article and Find Full Text PDFACS Appl Mater Interfaces
October 2022
The rational design of ferromagnetic materials is crucial for the development of spintronic devices. Using first-principles structural search calculations, we have identified 73 two-dimensional transition metal hydrides. Some of them show interesting magnetic properties, even when combined with the characteristics of the electrides.
View Article and Find Full Text PDFInt J Sports Med
November 2022
The purpose was to analyze the comparison of velocity-based resistance training and one-repetition maximum (%1RM) percentage-based training in maximal strength improvement by meta-analyzing and to find the reasons for the controversial findings of different studies. Ten studies were included in the systematic review and seven were subjected to meta-analysis. A total of 139 subjects were selected from the included articles after exclusion, including athletes of different specialties (N=93) and non-athletes mainly from fitness groups (N=46).
View Article and Find Full Text PDFPressure always plays an important role in influencing the structure configuration and electronic properties of materials. Here, combining density function theory and structure prediction algorithm, we systematically studied the MgSb system from its phase transition to thermodynamic and electronic properties under high pressure. We find that two novel phases, namely and 2/, are stable under high pressure.
View Article and Find Full Text PDFPressure is a fundamental tool that can induce structural and electronic transformations, which is helpful to search for exotic materials not accessible at ambient conditions. Here, we have performed an extensive structural study on cubic MgAs in a pressure range of 0-100 GPa by using a combination of structure predictions and first-principle calculations. Interestingly, two novel structures with space groups 2/ and 1̄ were uncovered that become energetically most stable at pressures of 12 GPa and 30 GPa, respectively.
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