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RISS 인기검색어
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- 저자 : Zhu Wenhui (검색결과 5 건)
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Zhu Wenhui,Wu Le,Duan Lei,Xu Shengquan 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.1
A preliminary checklist of the ants of northern Shaanxi is presented based on an evaluation from June 2018 to September 2020. Seven species are reported from Shaanxi for the first time: Formica approximans Wheeler, 1933; Formica clara Forel, 1886; Messor aralocaspius (Ruzsky, 1902); Plagiolepis pygmaea (Latreille, 1798); Tapinoma rectinotum Wheeler, 1927; Tetramorium chefketi Forel, 1911; Tetramorium tsushimae Emery, 1925 and Temno thorax ruginosus Zhou, Huang, Yu & Liu, 2010. A new species of genus Proformica Ruzsky, 1902, Proformica muusensis sp. nov., is described based on the morphology and molecular method. In total, three subfamilies with 34 valid ant species in 15 genera are reported in our checklist.
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Target alignment method of inertial confinement fusion facility based on position estimation
Lin Weiheng,Zhu Jianqiang,Liu Zhigang,Pang Xiangyang,Zhou Yang,Cui Wenhui,Dong Ziming 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.10
Target alignment technology is one of the most critical technologies in laser fusion experiments and is an important technology related to the success of laser fusion experiments. In this study, by combining the open-loop and closed-loop errors of the target alignment, the Kalman state observer is used to estimate the position of the target, which improves the observation precision of the target alignment. Then the optimized result is used to guide the alignment of the target. This method can greatly optimize the target alignment error and reduce uncertainty. With the improvement of the target alignment precision, it will greatly improve the reliability and repeatability of the experiments’ results, thereby improving the success rate of the experiments.
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Hui Shang,Zehua Zhu,Wenhui Zhang,Hongjun Zhou 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.5
The main process for industrial synthesis of hydrogen peroxide is to subject 2-ethylanthraquinone to cyclic hydrogenation and oxidation. Hydrogenation catalyst is one of the key techniques of anthraquinone route. A new egg-shell palladium catalyst with racshig-ring alumina supported was developed for meeting the mechanism and improving mass transformation based on the kinetics and mass transfer theory, the effects of materials feeding methods together with operating conditions on the hydrogenation efficiency were detailed. It was concluded that the egg-shell palladium catalyst developed by this research has higher hydrogenation efficiency than the commercial contrast catalysts.
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Chen Huan,Gao Cheng,Zhu Wenhui,Wan Rong,Xiong Mei 대한독성 유전단백체 학회 2022 Molecular & cellular toxicology Vol.18 No.4
Background Preeclampsia (PE) is the most common hypertensive disorder in pregnant women. Circular RNAs (circRNAs) are a class of regulatory non-coding RNAs in human diseases, and a handful of circRNAs have been found to participate in PE regulation. The function of hsa_circ_0070194 in PE is unknown. Objective The aims of this study were to explore the biological role and regulatory mechanism of hsa_circ_0070194 in PE progression. Hsa_circ_0070194, microRNA-384 (miR-384) and histone deacetylase 2 (HDAC2) detection was performed by quantitative real-time polymerase chain reaction. Cell proliferation and cell cycle were, respectively, analyzed by Cell Counting Kit-8/colony-formation assays and flow cytometry. Cell migration and invasion were measured by wound healing and transwell assays. Western blot was carried out to determine the protein levels. The target interaction was proved via dual-luciferase reporter and RNA immunoprecipitation assays. Results Hsa_circ_0070194 level was downregulated in PE samples. HTR-8/SVneo cell proliferation, cell cycle, migration and invasion were all promoted by hsa_circ_0070194. Hsa_circ_0070194 acted as a miR-384 sponge. Hsa_circ_0070194 function was achieved partly by sponging miR-384 in HTR-8/SVneo cells. HDAC2 was a target gene of miR-384 and HDAC2 was regulated by hsa_circ_0070194 via the sponge effect on miR-384. MiR-384 targeted HDAC2 to inhibit the progression of HTR-8/SVneo cells. Conclusion This study suggested that hsa_circ_0070194 facilitated trophoblast cell proliferation, cell cycle, migration and invasion by the miR-384/HDAC2 axis. Hsa_circ_0070194 might relieve PE progression in pregnancy women.
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Study on liquid-solid jet erosion characteristics of 316L stainless steel
Guan Wang,Qianfeng Gao,Linyuan Kou,Pei Zhang,Wenhui Wang,Jianfei Deng,Xuejun Zhu 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.4
The essence of erosion is the dynamic damage and material loss process of a material caused by particle impact. The failure mechanism of erosion is the result of the interaction of multiphase flow, particle characteristics, material properties, particle impact process, and other factors. This paper employs experimental and numerical simulation methods to investigate the erosion behavior of a solid-liquid two-phase flow of 316L stainless steel jet from the angle of erosion, to explain the erosion behavior from both macroscopic and microscopic perspectives. The results discovered that the kinetic energy of the fluid is converted into pressure potential energy, which changes the kinematic characteristics of the particles and influences how they erode. The particles erode the target material by plowing and impacting at various erosion angles, and the erosion rate exhibits an increasing-decreasing-increasing tendency as the erosion angle increases, the 45° corresponds to the maximum erosion rate. Due to the particles to harden the target surface, the erosion effect is diminished in the time dimension. Comparing to high erosion angles, the reduction rate of the erosion rate in the late experiment stage is small for slow erosion angles. In the last 3 hours of the experiment, the total erosion of 316L stainless steel at 90° erosion angle was only 35 %. This provides a theoretical foundation for failure prevention in transport components containing solid particles.
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