跨世紀韓國與中國山東省 經貿合作前景展望

范振洪,李炳鎭 평택대학교 1999 論文集 Vol.13 No.-

本文??述了跨世紀韓國與中國山동省經貿合作的前景問題. (1) 跨世紀韓國與中國山東省經貿合作的有利條件 制約要所 (2) 跨世紀韓國與中國山東省經貿合作的重点 ; (3) 跨世紀韓國與中國山東省經貿合作的對策.

Effect of Shifting the Pole-shoe and Damper-bar Centerlines on the No-load Voltage Waveform of a Tubular Hydro-generator

Fan, Zhen-nan,Han, Li,Liao, Yong,Xie, Li-dan,Wen, Kun,Wang, Jun,Dong, Xiu-cheng,Yao, Bing The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.3

This study optimises the no-load voltage waveform of tubular hydro-generators by a simple design scheme. For different centerlines of the pole shoe and damper bar, the optimisation effects on the no-load voltage waveform are investigated in two tubular hydro-generators with different weighted powers (34 MW and 18 MW). The results are compared with those of the traditional stator-slots skewed design. The quality of the no-load voltage waveform was related to the shifting degree, and the different optimisation effects between the integer slot generator (q = 2) and the fractional slot generator (q = 11/2) were analysed. This research can improve the quality of the power output and no-load voltage waveform, and provide an effective reference for improving the industrial design and manufacture level of tubular hydro-generators.

The Effect of miR-361-3p Targeting TRAF6 on Apoptosis of Multiple Myeloma Cells

( Zhen Fan ),( Zhiwei Wu ),( Bo Yang ) 한국미생물생명공학회(구 한국산업미생물학회) 2021 Journal of microbiology and biotechnology Vol.31 No.2

microRNA-361-3p (miR-361-3p) is involved in the carcinogenesis of oral cancer and pancreatic catheter adenocarcinoma, and has anti-carcinogenic effects on non-small cell lung cancer (NSCLC). However, its effect on multiple myeloma (MM) is less reported. Here, we found that upregulating the expression of miR-361-3p inhibited MM cell viability and promoted MM apoptosis. We measured expressions of tumor necrosis factor receptor-associated factor 6 (TRAF6) and miR-361-3p in MM cells and detected the viability, colony formation rate, and apoptosis of MM cells. In addition, we measured expressions of apoptosis-related genes Bcl-2, Bax, and Cleaved caspase-3 (C caspase-3). The binding site between miR-361-3p and TRAF6 was predicted by TargetScan. Our results showed that miR-361-3p was low expressed in the plasma of MM patients and cell lines, while its overexpression inhibited viability and colony formation of MM cells and increased the cell apoptosis. Furthermore, TRAF6, which was predicted to be a target gene of miR-361-3p, was highexpressed in the plasma of patients and cell lines with MM. Rescue experiments demonstrated that the effect of TRAF6 on MM cells was opposite to that of miR-361-3p. Upregulation of miR-361-3p induced apoptosis and inhibited the proliferation of MM cells through targeting TRAF6, suggesting that miR-361-3p might be a potential target for MM therapy.

Study on Leading-phase Operation Capability of a 770 MW Jumbo Hydro-generator based on Stability Analysis and End-Region Heat Analysis

Fan, Zhen-nan,Zhou, Zhi-ting,Li, Jian-fu,Wen, Kun,Wang, Jun,Sun, Zhang,Wang, Tao,Yao, Bing The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.3

A generator-grid coupling calculation model is established to study the leading-phase operational capability of a 770 MW jumbo hydro-generator in a Chinese ultra-mega hydropower station. The static and dynamic stability of the generator are analyzed and calculated to obtain stability limits under leading-phase operating conditions. Three-dimensional (3D) time-varying nonlinear moving electromagnetic and temperature field models of the generator end-region are also established and used to determine the magnetic field, loss, and temperature of the end-region under the leading-phase operating condition. The simulation results agree with data measured from the actual 770 MW hydro-generator. This paper provides reliable reference data for the leading-phase operation of a jumbo hydro-generator, which will help to improve in the design and manufacture of future hydro-generators.

Study on Leading-phase Operation Capability of a 770 MW Jumbo Hydro-generator based on Stability Analysis and End-Region Heat Analysis

Zhen-nan Fan,Zhi-ting Zhou,Jian-fu Li,Kun Wen,Jun Wang,Zhang Sun,Tao Wang,Bing Yao 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.3

A generator-grid coupling calculation model is established to study the leading-phase operational capability of a 770 MW jumbo hydro-generator in a Chinese ultra-mega hydropower station. The static and dynamic stability of the generator are analyzed and calculated to obtain stability limits under leading-phase operating conditions. Three-dimensional (3D) time-varying nonlinear moving electromagnetic and temperature field models of the generator end-region are also established and used to determine the magnetic field, loss, and temperature of the end-region under the leading-phase operating condition. The simulation results agree with data measured from the actual 770 MW hydro-generator. This paper provides reliable reference data for the leading-phase operation of a jumbo hydro-generator, which will help to improve in the design and manufacture of future hydro-generators.

Effect of Shifting the Pole-shoe and Damper-bar Centerlines on the No-load Voltage Waveform of a Tubular Hydro-generator

Zhen-nan Fan,Li Han,Yong Liao,Li-dan Xie,Kun Wen,Jun Wang,Xiu-cheng Dong,Bing Yao 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.3

This study optimises the no-load voltage waveform of tubular hydro-generators by a simple design scheme. For different centerlines of the pole shoe and damper bar, the optimisation effects on the no-load voltage waveform are investigated in two tubular hydro-generators with different weighted powers (34 MW and 18 MW). The results are compared with those of the traditional stator-slots skewed design. The quality of the no-load voltage waveform was related to the shifting degree, and the different optimisation effects between the integer slot generator (q = 2) and the fractional slot generator (q = 11/2) were analysed. This research can improve the quality of the power output and no-load voltage waveform, and provide an effective reference for improving the industrial design and manufacture level of tubular hydro-generators.

Influence of compatibilizers and processing temperature on microcellular injection‐molded polypropylene/(waste tire powder) composites

Zhang, Zhen‐,Xiu,Fan, Jun‐,ling,Pal, Kaushik,Kim, Jin Kuk,Xin, Zhen‐,Xiang Wiley Subscription Services, Inc., A Wiley Company 2011 Journal of Vinyl and Additive Technology Vol.17 No.4

<P><B>Abstract</B></P><P>Nowadays the economic recycling of waste tires has become a global challenge. The use of waste tire powder as a dispersed elastomeric phase in a polypropylene (PP) matrix offers an interesting opportunity for recycling of waste tire rubber. Compatibilized PP/(waste tire powder) composites are microcellularly processed to create a new class of materials with unique properties. Recent studies have demonstrated the feasibility of developing microcellular structures in PP/waste ground rubber tire (WGRT) composites. Microcellular PP/WGRT composites are prepared by an injection‐molding process using a chemical blowing agent. In this study, cell sizes, cell density, void fraction, and mechanical properties of the composite foams were measured, as well as the shear viscosity of the unfoamed composites. The influence of various compatibilizers and processing temperatures on cell morphology and the mechanical properties of injection‐molded PP/WGRT composites were investigated. It was seen that the addition of maleic anhydride‐grafted styrene‐ethylene‐butylene‐styrene (SEBS‐<I>g</I>‐MA) increased the shear viscosity of the composites. The void fraction and cell density of the PP/WGRT composites increased with addition of compatibilizers, whereas the average cell sizes decreased. A processing temperature range of 180–195°C gave finer microcellular structure and regular cell distribution. The SEBS‐<I>g</I>‐MA enhanced the elongation properties and acted as an effective compatibilizer in this particular system. J. VINYL ADDIT. TECHNOL., 2011. © 2011 Society of Plastics Engineers</P>

Undaria Pinnatifida Suppresses Nasal Inflammation via Inhibiting Eosinophil and Mast Cell Activation

Zhen Nan Yu,Chang Ho Song,Thi Van Nguyen,Juan Jin,Eui Hyeog Han,Yan Jing Fan,Hyoung Tae Kim,Ok Hee Chai 대한체질인류학회 2021 대한체질인류학회 학술대회 연제 초록 Vol.64 No.-

Undaria pinnatifida (U. pinnatifida), a brown alga commonly grown in the oceans of East Asia, has long been a part of human diet and medicine. Though U. pinnatifida has been reported to have immunomodulatory, anti-inflammatory, anti-oxidant, anti-diabetic and anti-bacterial activities, its specific effect on allergic rhinitis (AR) disease has not been clarified. In this study, the anti-allergic and anti-inflammatory effects of U. pinnatifida extract (UPE) were investigated in a mouse model of ovalbumin (OVA)-induced AR. After UPE treatment, the nasal and lung allergy symptoms, nasal mucosal swelling, and goblet cell hyperplasia were obviously ameliorated. Oral UPE regulated the balance of T helper (Th) 1/Th2 and Th17/Treg cells differentiation in AR mice in a dose-dependent manner. Accordingly, UPE attenuated the expression of Th2 cytokines (IL-4, IL-5, IL-13), Th17-related cytokine IL-17, proinflammatory cytokines (TNF-α, IL-6) and up-regulated the secretion of Th1 and Treg cytokines including IL-12, IFN-γ and IL-10 in nasal lavage fluid (NALF). Also, UPE attenuated the migration of eosinophils to the nasal mucosa and NALF by inhibiting eotaxin, an eosinophil-specific chemoattractant, as well as suppressed Nuclear factor-kappaB (NF-κB)/Signal transducer and activator of transcription 3 (STAT3), a signaling pathway in eosinophils. The levels of anti-OVA specific IgE and IgG1 were decreased, and as a result, the allergic response was attenuated by UPE via inhibiting mast cells accumulation in nasal mucosa. These results suggested that UPE may have therapeutic potential for treating AR through modulating important immune cells in the immune system such as Th1/Th2 and Th17/Treg balance, eosinophils and mast cells.

Optimal Controller for Near-Space Interceptor with Actuator Saturation

FAN Guo-long,LIANG Xiao-geng,HOU Zhen-qian,YANG Jun 한국항공우주학회 2013 International Journal of Aeronautical and Space Sc Vol.14 No.3

The saturation of the actuator impairs the response performance of the near space interceptor control system. A control system based on the properties of linear tracking system is designed for this problem. The properties are that the maximum value of the pseudo-Lyapunov function of the linear tracking control system do not present at the initial state but at the steady state, based on which the bounded stability problem is converted into linear tracking problem. The pseudo-Lyapunov function of the linear tracking system contain the input variables; the amplitude and frequency of the input variables affect the stability of the nonlinear control system. Designate expected closed-loop poles area for different input commands and obtain a controller which is function of input variables. The coupling between variables and linear matrices make the control system design problem non-convex. The non-convex problem is converted into a convex LMI according to the Shur complement lemma and iterative algorithm. Finally the simulation shows that the designed optimal control system is quick and accurate; the rationality of the presented design techniques is validated.

DTSTM: Dynamic Tree Style Trust Measurement Model for Cloud Computing

( Zhen-ji Zhou ),( Li-fa Wu ),( Zheng Hong ),( Ming-fei Xu ),( Fan Pan ) 한국인터넷정보학회 2014 KSII Transactions on Internet and Information Syst Vol.8 No.1

In cloud computing infrastructure, current virtual machine trust measurement methods have many shortcomings in dynamism, security and concurrency. In this paper, we present a new method to measure the trust of virtual machine. Firstly, we propose “behavior trace” to describe the state of virtual machine. Behavior trace is a sequence of behaviors. The measurement of behavior trace is conducted on the basis of anticipated trusted behavior, which not only ensures security of the virtual machine during runtime stage but also reduces complexity of the trust measurement. Based on the behavior trace, we present a Dynamic Tree Style Trust Measurement Model (DTSTM). In this model, the measurement of system domain and user domain is separated, which enhances the extensibility, security and concurrency of the measurement. Finally, based on System Call Interceptor (SCI) and Virtual Machine Introspection (VMI) technology, we implement a DTSTM prototype system for virtual machine trust measurement. Experimental results demonstrate that the system can effectively verify the trust of virtual machine and requires a relatively low performance overhead.