Results 1 to 10 of about 175,748,698 (316)

Postural Stability Changes During the 4 Phases of the Half Squat: Kinematics Profile of the Center of Pressure and Center of Mass in High-Performance Weightlifters—A Pilot Study [PDF]

Bioengineering
This study investigated balance control during the half squat by analyzing the relationship between the center of mass (CoM) and the center of pressure (CoP) in five experienced male weightlifters performing segmented squats at five load levels (20–80% 1
Emilio Manuel Arrayales-Millán, Miguel Rodal, Mirvana Elizabeth González-Macías, Carlos Villa-Angulo, Karla Raquel Keys-González, Arnulfo Ramos-Jiménez, Isabella Arrayales-Mejia, Kostantinos Gianikellis   +7 more
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Phase transition mechanism and bandgap engineering of Sb2S3 at gigapascal pressures

Communications Chemistry, 2021
Antimonite (Sb2S3) has potential applications for solar energy, but how its layered structure changes under pressure is incompletely understood. Here diamond anvil cell experiments supported by first principles calculations offer a structural explanation
Zhongxun Cui, Kejun Bu, Yukai Zhuang, Mary-Ellen Donnelly, Dongzhou Zhang, Philip Dalladay-Simpson, Ross T. Howie, Jiandong Zhang, Xujie Lü, Qingyang Hu   +9 more
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Enhancing reversibility of LiNi0.5Mn1.5O4 by regulating surface oxygen deficiency

Carbon Energy, 2023
Oxygen deficiency has crucial effects on the crystal structure and electrochemical performance of spinel oxide lithium electrode materials such as LiNi0.5Mn1.5O4 (LNMO) cathode.
Dandan Wang, Cong Gao, Xuefeng Zhou, Shang Peng, Mingxue Tang, Yonggang Wang, Lujun Huang, Wenge Yang, Xiang Gao   +8 more
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Nested order-disorder framework containing a crystalline matrix with self-filled amorphous-like innards

Nature Communications, 2022
The synthesis and characterization of new crystalline-amorphous hybrid materials is challenging. Here, the authors report the preparation of a nested order-disorder framework by applying high pressure to a nested copper chalcogenide Cu12Sb4S13.
Kejun Bu, Qingyang Hu, Xiaohuan Qi, Dong Wang, Songhao Guo, Hui Luo, Tianquan Lin, Xiaofeng Guo, Qiaoshi Zeng, Yang Ding, Fuqiang Huang, Wenge Yang, Ho-Kwang Mao, Xujie Lü   +13 more
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Hexagonal B–C–N composite consisting of h-BN and graphite separated by B–C nanolayer [PDF]

Matter and Radiation at Extremes
Graphite and hexagonal boron nitride (h-BN), despite their structural similarity, exhibit opposing electronic properties, namely, metallic conductivity and wide-bandgap insulation, respectively.
Baoyin Xu, Xiaohong Yuan, Bingtao Feng, Yifeng Jiang, Yaqi She, Zhanhui Ding, Yue Pan, Shucheng Liu, Kuo Hu, Zhaodong Liu, Quanjun Li, Bingbing Liu, Hu Tang   +12 more
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Discovery of the Baijifeng impact structure in Tonghua, Jilin, China

Matter and Radiation at Extremes, 2023
An impact structure 1400 m in diameter, formed by a bolide impact, has been discovered on Baijifeng Mountain in Tonghua City in Northeast China’s Jilin province. The impact structure takes the form of a cirque-shaped depression on the top of the mountain
Ming Chen, Yang Lu, Jiahao Ning, Wenge Yang, Jinfu Shu, Ho-kwang Mao   +5 more
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Melting of Iron Explored by Electrical Resistance Jump up to 135 GPa

Geophysical Research Letters, 2021
The melting temperature (Tm) of iron at megabar pressures constrains the Earth's core temperature structure and dynamics. Previous experimental studies demonstrated large discrepancies in Tm at high pressures.
Mingqiang Hou, Jin Liu, Youjun Zhang, Xueyan Du, Hongliang Dong, Limin Yan, Junyue Wang, Lin Wang, Bin Chen   +8 more
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Band gap closure, incommensurability and molecular dissociation of dense chlorine

Nature Communications, 2019
Molecular systems are predicted to transform into atomic solids and be metallic at high pressure; this was observed for the diatomic elements iodine and bromine. Here the authors access the higher pressures needed to observe the dissociation in chlorine,
Philip Dalladay-Simpson, Jack Binns, Miriam Peña-Alvarez, Mary-Ellen Donnelly, Eran Greenberg, Vitali Prakapenka, Xiao-Jia Chen, Eugene Gregoryanz, Ross T. Howie   +8 more
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Pressure Engineering Promising Transparent Oxides with Large Conductivity Enhancement and Strong Thermal Stability

Advanced Science, 2022
Transparent conducting oxides (TCO) with high electrical conductivity and high visible light transparency are desired for a wide range of high‐impact engineering. Yet, usually, a compromise must be made between conductivity and transparency, limiting the
Xuqiang Liu, Mingtao Li, Qian Zhang, Yiming Wang, Nana Li, Shang Peng, Tao Yin, Songhao Guo, Ye Liu, Limin Yan, Dongzhou Zhang, Jaeyong Kim, Gang Liu, Yandong Wang, Wenge Yang   +14 more
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Author Correction: Band gap closure, incommensurability and molecular dissociation of dense chlorine

Nature Communications, 2019
The original version of this Article omitted references to previous experimental reports on solid hydrogen that are relevant for a full understanding of the context of the previous work. The added references are: 47. Akahama, Y. et al.
Philip Dalladay-Simpson, Jack Binns, Miriam Peña-Alvarez, Mary-Ellen Donnelly, Eran Greenberg, Vitali Prakapenka, Xiao-Jia Chen, Eugene Gregoryanz, Ross T. Howie   +8 more
doaj   +1 more source