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Institution

Yanshan University

EducationQinhuangdao, China
About: Yanshan University is a education organization based out in Qinhuangdao, China. It is known for research contribution in the topics: Microstructure & Control theory. The organization has 19544 authors who have published 16904 publications receiving 184378 citations. The organization is also known as: Yānshān dàxué.


Papers
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Journal ArticleDOI
TL;DR: The findings indicated that the K removal could be slightly enhanced by prolonging the reaction time, which would correspondingly decrease the Na concentration in the precipitates; besides, the intermittent addition of MgCl2 could noticeably improve the removal efficiency of K by 6%, but simultaneously raise the Na content inThe precipitates recovered.

59 citations

Journal ArticleDOI
TL;DR: In this paper, the authors compared a period with price limits to a period without price limits and found that price limits can facilitate price discovery, moderate transitory volatility, and mitigate abnormal trading activity.
Abstract: We study China's experience with price limits by comparing a period with price limits to a period without price limits. Although many prior studies document costs of price limits, we show benefits of price limits. We find that price limits can facilitate price discovery, moderate transitory volatility, and mitigate abnormal trading activity. A tighter price limit for poorly performing stocks can also moderate volatility. We do not find evidence of a magnet effect, which suggests that prices gravitate to limit prices. Finally, we find evidence that price limits can facilitate market recovery following crashes.

59 citations

Journal ArticleDOI
Rongna Chen1, Liu Lei1, Junshuang Zhou1, Li Hou1, Faming Gao1 
TL;DR: An asymmetric supercapacitor device with nickel-cobalt-borons (Ni-Co-B) as the positive electrode and commercial activated carbon (CAC), as the negative electrode material is presented in this article.

59 citations

Journal ArticleDOI
Zhi-Qiang Zhao1, Pei-Wen Xiao, Li Zhao, Yu-Wen Liu1, Bao-Hang Han 
TL;DR: In this article, human hair, a biowaste composed of protein, is converted into nitrogen and sulfur co-doped porous carbonaceous materials via a facile degradation and carbonization/activation process.
Abstract: Human hair, a biowaste composed of protein, is converted into nitrogen and sulfur co-doped porous carbonaceous materials via a facile degradation and carbonization/activation process. The resulting carbon materials possess a large specific surface area value (2700 m2 g−1) as well as high nitrogen and sulfur content (around 8.0 and 4.0 wt%, respectively). The morphology, composition and porous structure of the obtained materials were thoroughly characterized using scanning and transmission electron microscopy, elemental analysis, nitrogen and carbon dioxide sorption analysis, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy, etc. It is confirmed that both the degradation and the carbonization/activation procedures play important roles in the porous structure formation. Furthermore, these materials are proven to exhibit good performances in gas adsorption: carbon dioxide uptake (up to 24.0 wt%, at 273 K and 1.0 bar), methane adsorption (up to 3.04 wt%, at 273 K and 1.0 bar), and hydrogen adsorption (up to 2.03 wt%, at 77 K and 1.0 bar). The high gas adsorption capacities could be attributed to the microporous structure combined with the surface functionalities. In addition, we believe that this synthesis process offers a facile and effective way for transforming protein-containing biowastes into functionalized porous carbonaceous materials.

59 citations

Journal ArticleDOI
TL;DR: This paper identifies the dynamic process probed by THz-TDS as the caged molecule dynamics, showing up in susceptibility spectra as nearly constant loss (NCL), and establishes the connection of the magnitude and temperature dependence of the NCL and those of τJG.
Abstract: The paper (Sibik, J.; Elliott, S. R.; Zeitler, J. A. J. Phys. Chem. Lett. 2014, 5, 1968–1972) used terahertz time-domain spectroscopy (THz-TDS) to study the dynamics of the polyalcohols, glycerol, threitol, xylitol, and sorbitol, at temperatures from below to above the glass transition temperature Tg. On heating the glasses, they observed the dielectric losses, e″(ν) at ν = 1 THz, increase monotonically with temperature and change dependence at two temperatures, first deep in the glassy state at TTHz = 0.65Tg and second at Tg. The effects at both temperatures are most prominent in sorbitol but become progressively weaker in the order of xylitol and threitol, and the sub-Tg change was not observed in glycerol. They suggested this feature originates from the high-frequency tail of the Johari–Goldstein (JG) β-relaxation, and the temperature region near 0.65Tg is the universal region for the secondary glass transition due to the JG β-relaxation. In this paper, we first use isothermal dielectric relaxation dat...

59 citations


Authors

Showing all 19693 results

NameH-indexPapersCitations
Jian Yang1421818111166
Peng Shi137137165195
Tao Zhang123277283866
David Zhang111102755118
Lei Liu98204151163
Guoliang Li8479531122
Hao Yu8198127765
Jian Yu Huang8133926599
Chen Chen7666524846
Wei Jin7192921569
Xiaoli Li6987720690
K. L. Ngai6441215505
Zhiqiang Zhang6059516675
Hak-Keung Lam5941412890
Wei Wang5822914230
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202369
2022297
20211,753
20201,486
20191,433
20181,209