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RISS 인기검색어
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- 저자 : Luo Yuting (검색결과 3 건)
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Model test and numerical simulation on the bearing mechanism of tunnel-type anchorage
Li, Yujie,Luo, Rong,Zhang, Qihua,Xiao, Guoqiang,Zhou, Liming,Zhang, Yuting Techno-Press 2017 Geomechanics & engineering Vol.12 No.1
The bearing mechanism of tunnel-type anchorage (TTA) for suspension bridges is studied. Model tests are conducted using different shapes of plug bodies, which are circular column shape and circular truncated cone shape. The results show that the plug body of the latter shape possesses much larger bearing capacity, namely 4.48 times at elastic deformation stage and 4.54 times at failure stage compared to the former shape. Numerical simulation is then conducted to understand the mechanical and structural responses of plug body and surrounding rock mass. The mechanical parameters of the surrounding rock mass are firstly back-analyzed based on the monitoring data. The calculation laws of deformation and equivalent plastic strain show that the numerical simulation results are rational and provide subsequent mechanism analysis with an established basis. Afterwards, the bearing mechanism of TTA is studied. It is concluded that the plug body of circular truncated cone shape is able to take advantage of the material strength of the surrounding rock mass, which greatly enhances its bearing capacity. The ultimate bearing capacity of TTA, therefore, is concluded to be determined by the material strength of surrounding rock mass. Finally, recommendations for TTA design are proposed and discussed.
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Spoilage Lactic Acid Bacteria in the Brewing Industry
( Zhenbo Xu ),( Yuting Luo ),( Yuzhu Mao ),( Ruixin Peng ),( Jinxuan Chen ),( Thanapop Soteyome ),( Caiying Bai ),( Ling Chen ),( Yi Liang ),( Jianyu Su ),( Kan Wang ),( Junyan Liu ),( Birthe V. Kjell 한국미생물 · 생명공학회 2020 Journal of microbiology and biotechnology Vol.30 No.7
Lactic acid bacteria (LAB) have caused many microbiological incidents in the brewing industry, resulting in severe economic loss. Meanwhile, traditional culturing method for detecting LAB are time-consuming for brewers. The present review introduces LAB as spoilage microbes in daily life, with focus on LAB in the brewing industry, targeting at the spoilage mechanism of LAB in brewing industry including the special metabolisms, the exist of the viable but nonculturable (VBNC) state and the hop resistance. At the same time, this review compares the traditional and novel rapid detection methods for these microorganisms which may provide innovative control and detection strategies for preventing alcoholic beverage spoilage, such as improvement of microbiological quality control using advanced culture media or different isothermal amplification methods.
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Muhammad Arif,Zhang Min,Luo Yuting,Hongfei Yin,Xiaoheng Liu 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.69 No.-
A Bi2WO6-based hybrid heterostructure photocatalyst were fabricated by two step hydrothermal method. Bi2WO6 nanosheets with side length of 100–200 nm and thickness and about 20 nm thickness was homogeneously overcoated at the surface of CdS nanowires with an average diameter of 50 nm. The formation of hybrid heterostructures could efficiently enhanced the photocatalytic activity. The hybrid heterostructures photocatalyst of Bi2WO6/CdS achieved the highest photocatalytic H2 evolution (1223 μmol h−1g−1) under visible light irradiation which is much higher than the pristine CdS (602 μmol h−1g−1). Furthermore, the photocatalytic pollutant decomposition efficiency of hybrid heterostructures was well promoted compare to Bi2WO6 and CdS. The role of main oxidative species in the photocatalytic process was confirmed by the active species trapping experiments. The experimental results concluded that the enhanced photocatalytic activity and photostability of hybrid heterostructures is mainly associated with the Z-scheme photocatalytic charge transfer of the photogenerated charge carriers. Based on the obtained experimental results and calculation, a precise Z-scheme mechanism was proposed and discussed, which was further evaluated by the electrochemical spectroscopic study of the prepared photocatalyst. The Z-scheme photocatalytic system bestows the Bi2WO6/CdS hybrid heterostructures with efficient reducibility, stability and excellent oxidizability.
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