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楊釗(Yang Zhao) 동아인문학회 2017 동아인문학 Vol.39 No.-
Yang Shen had made many comments on Kong Ming, which can be seen in his works, poems, poetic criticisms and “the Whole Shu Yiwenzhi”. Yang Shen mainly focused on the analysis of hot issues such as the moral and utilitarian achievements, the academic and governance abilities of Kong Ming. Yang Shen’s purpose in comments on Kong Ming aimed was to admire for former worthies and educate the future generation, not pedantically to look for quotes in order to embellish his writings.
Graphene Supported Li2SnO3 as Anode Material for Lithium-Ion Batteries
Yang Zhao,Ying Huang,Qiufen Wang,XiaoYa Wang,Meng Zong,Haiwei Wu,Wei Zhang 대한금속·재료학회 2013 ELECTRONIC MATERIALS LETTERS Vol.9 No.5
The graphene supported Li2SnO3 composites were prepared via a deoxidation technique. The structure, morphology and electrochemical properties of the composites were detected by means of XRD, SEM, TEM,Raman, TGA and electrochemical measurements. The Li2SnO3 powders could be distributed on the graphene sheets (GNS). The Li2SnO3/GNS composites exhibit good electrochemical performance with high capacity and good cycling stability (582.2 mAh/g after 50 cycles at 60 mA/g). The performance is ascribed to the presence of graphene keeping the structure stable. The composites Li2SnO3/GNS exhibited a better electrochemical property than Li2SnO3 and graphene.
Zhao Junxiong,Wu Qian,Yang Ting,Nie Liangui,Liu Shengquan,Zhou Jia,Chen Jian,Jiang Zhentao,Xiao Ting,Yang Jun,Chu Chun 대한약리학회 2022 The Korean Journal of Physiology & Pharmacology Vol.26 No.6
Myocardial fibrosis is a key link in the occurrence and development of diabetic cardiomyopathy. Its etiology is complex, and the effect of drugs is not good. Cardiomyocyte apoptosis is an important cause of myocardial fibrosis. The purpose of this study was to investigate the effect of gaseous signal molecule sulfur dioxide (SO2) on diabetic myocardial fibrosis and its internal regulatory mechanism. Masson and TUNEL staining, Western-blot, transmission electron microscopy, RT-qPCR, immunofluorescence staining, and flow cytometry were used in the study, and the interstitial collagen deposition, autophagy, apoptosis, and changes in phosphatidylinositol 3-kinase (PI3K)/AKT pathways were evaluated from in vivo and in vitro experiments. The results showed that diabetic myocardial fibrosis was accompanied by cardiomyocyte apoptosis and down-regulation of endogenous SO2-producing enzyme aspartate aminotransferase (AAT)1/2. However, exogenous SO2 donors could up-regulate AAT1/2, reduce apoptosis of cardiomyocytes induced by diabetic rats or high glucose, inhibit phosphorylation of PI3K/AKT protein, up-regulate autophagy, and reduce interstitial collagen deposition. In conclusion, the results of this study suggest that the gaseous signal molecule SO2 can inhibit the PI3K/AKT pathway to promote cytoprotective autophagy and inhibit cardiomyocyte apoptosis to improve myocardial fibrosis in diabetic rats. The results of this study are expected to provide new targets and intervention strategies for the prevention and treatment of diabetic cardiomyopathy.
Wireless Synchronous Transfer of Power and Reverse Signals
Yang Li,Yumei Li,Shaojie Feng,Qingxin Yang,Weihao Dong,Jingtai Zhao,Ming Xue 전력전자학회 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.3
Wireless power transfer via coupled magnetic resonances has been a hot research topic in recent years. In addition, the number of related devices has also been increasing. However, reverse signals transfer is often required in addition to wireless power transfer. The structure of the circuit for a wireless power transfer system via coupled magnetic resonances is analyzed. The advantages and disadvantages of both parallel compensation and series compensation are listed. Then the compensation characteristics of the inductor, capacitor and resistor were studied and an appropriate compensation method was selected. The reverse signals can be transferred by controlling the compensation of the resistor. In addition, it can be demodulated by extracting the change of the primary current. A 3.3 MHz resonant frequency with a 100 kHz reverse signals transfer system platform was established in the laboratory. Experimental results demonstrate that wireless power and reverse signals can be transferred synchronously.
Study on Tribology Characteristics of Friction Material Based on System
Zhao-Jian Yang,Fang Ren,Seok-Sam Kim 한국트라이볼로지학회 2003 한국트라이볼로지학회 학술대회 Vol.36 No.-
The basic principle of tribology system is introduced in the paper. Based on the viewpoint of tribology system, the testing research on characteristics of friction lining material in multi-rope friction hoist is carried out. The research result shows: study on friction material only based on characteristic of system where friction material exists possesses practical signficance.
Zhao, Yang,Chen, Liqing,Liu, Xianghua Techno-Press 2014 Advances in materials research Vol.3 No.4
In this study, a forging steel alloyed with both Nb and V was used as experimental material and the hot deformation behavior has been studied for this steel by conducting the compressive deformation test at temperature of $900-1150^{\circ}C$ and strain rate of $0.01-0.01s^{-1}$ in a MMS-300 thermo-mechanical simulator. The microstructure evolution, particularly the dynamically recrystallized microstructure, of the experimental steel at elevated temperatures, strain rates and strain levels, was characterized by optical microstructural observation and the constitutive equation in association with the activation energy and Zener-Hollomon parameter. The curves of strain hardening rate versus stress were used to determine the critical strain and peak strain, and their relation was connected with Zener-Hollomon parameter. Under the conditions of processing temperature $900^{\circ}C$ and strain rate $0.01s^{-1}$, the dynamic recrystallization took place and the austenite grain size was refined from $164.5{\mu}m$ to $28.9{\mu}m$.
On-line Monitoring of Tribology Parameters and Fault Diagnosis for Disc Brake System
Zhao-Jian Yang,Seock-Sam Kim 한국트라이볼로지학회 2003 한국트라이볼로지학회 학술대회 Vol.37 No.-
The basic principles and methods of the on-line monitoring of tribology parameters (friction coefficient and wear allowance) and fault diagnosis for the hoist disc brake system were introduced, the method were based on the spring force and oil pressure of the brake system and the hoist kinematics parameters. The experiment on the monitoring and diagnosis of hoist brake system were carried out. The research results showed: the monitoring and diagnosis methods are feasible.
Yang, Zhao-Jian,Peng, Ze-Jun,Kim, Seock-Sam The Korean Society of Mechanical Engineers 2004 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.18 No.6
A model in the form of a Bearing Load Distribution (BLD) matrix in the Multi Bearing Rotor System (MBRS) is established by a transfer matrix equation with the consideration of a bearing load, elevation and uniform load distribution. The concept of Bearing Load Sensitivity (BLS) is proposed and matrices for load and elevation sensitivity are obtained. In order to share MBRS design resources on the Internet with remote customers, the basic principle of Remote Computing (RC) based on the Internet is introduced ; the RC of the BLD and BLS is achieved by Microsoft Active Server Pages (ASP) technology.
Spatial–Temporal Clustering and Optimization of Aircraft Descent and Approach Trajectories
Zhao Yang,Rong Tang,Yixin Chen,Bing Wang 한국항공우주학회 2021 International Journal of Aeronautical and Space Sc Vol.22 No.6
This study presents a procedure for the spatial–temporal clustering and optimization of aircraft descent and approach trajectories. First, the spatial–temporal similarity between two trajectories is defined. Clustering analysis are conducted to identify the prevailing trajectories. The clustering centers obtained based on spatial–temporal distance are compared with those obtained based on the traditional Euclidean distance. Second, a multi-objective optimization model is established to minimize fuel consumption, aircraft emission and noise impact considering flight constraints. The Pareto solution that has the highest similarity with the prevailing trajectories is selected as the final optimized trajectory. The performance indicators of the optimized trajectory are compared with the average values of historic trajectories. It is found that travel time, fuel consumption and noise impact for the optimized trajectory are reduced by 5.34%, 0.96% and 11.86%, respectively. The percentages are 0.96%, 1.32%, 9.18%, 3.54% and 4.00% for CO2, SOx, NOx, CO and HC, respectively. Also, the performance indicators for the two clustering centers based on spatial–temporal distance are generally closer to average performance of original trajectories, as well as those of the optimized trajectories, as compared with the two clustering centers based on Euclidean distance. The spatial–temporal clustering methods may help to discover the valuable information that lies in those indicators associated with features reflected in time dimension.