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Kim, Hyun Jong,Choi, Ji Hyun,Hwang, Jung-Hwan,Kim, Kyong-Shim,Noh, Jung-Ran,Choi, Dong-Hee,Moon, Sung Je,Kim, Hyun-Yong,Kim, Sang-Woo,Choi, Sangho,Eum, Sang Mi,Bach, Tran The,Rho, Jaerang,Lee, Ju Yong UNKNOWN 2018 INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE Vol.42 No.5
<P><I>Melicope ptelefolia</I> has been traditionally used to treat rheumatism and fever. The present study aimed to investigate the therapeutic effect of 3,5-di-C-<I>β</I>-<SUB><SMALL>D</SMALL></SUB>-glucopyranosyl phloroacetophenone (βGP), a main component of <I>M. ptelefolia</I>, on rheumatoid arthritis (RA). A model of collagen-induced arthritis (CIA) was established in mice using the RAW 264.7 murine macrophage cell line and mouse embryonic fibroblasts (MEFs). The clinical scores of arthritis, swelling, histopathological findings, and micro-computed tomography in CIA mouse paws were assessed. The levels of anti-type II collagen antibody and cytokines were determined in the plasma and cell culture supernatant, respectively. Protein and gene expression levels were analyzed by western blot and reverse transcription-quantitative polymerase chain reaction analyses. βGP significantly decreased the gross arthritic scores of CIA mice and joint swelling, and decreased articular inflammation, cartilage degradation and bone erosion. However, βGP did not exert any effect on anti-type II collagen immunoglobulin G plasma levels or inflammatory cytokine expression in macrophages. βGP significantly suppressed the expression of interleukin-6 and leukemia inhibitory factor and decreased the phosphorylation of signal transducer and activator of transcription 3, and expression of receptor activator of nuclear factor-κB ligand in tumor necrosis factor-α-stimulated MEFs and in CIA mouse paws. Osteoclast-related gene expression was significantly reduced in CIA mouse paws. Taken together, βGP suppressed the development of RA by regulating the activation of synovial fibroblasts.</P>
Base extrusion is found at helical junctions between right- and left-handed forms of DNA and RNA
Kim, Doyoun,Reddy, Sanjith,Kim, Dong Young,Rich, Alexander,Lee, Sangho,Kim, Kyeong Kyu,Kim, Yang-Gyun Oxford University Press 2009 Nucleic acids research Vol.37 No.13
<P>Base extrusion is a major structural feature at the junction between B- and Z-DNA (the B–Z junction) where a base pair is broken, and the two bases are extruded from the double helix. Despite the demonstration of base extrusion at the B–Z junction, it is not clear whether a similar base extrusion occurs at other types of junctions involving the left-handed Z conformation. Here, we investigate structural changes of bases at three Z-form junctions: DNA B–Z and Z–Z and RNA A–Z junctions. By monitoring fluorescently labeled duplex nucleic acids using 2-aminopurines at various positions relative to the junction point, we show that base extrusion occurs not only at the DNA B–Z junction, but also at the RNA A–Z and DNA Z–Z junctions. Our data suggest that base extrusion is a general feature of Z-form nucleic-acid junctions.</P>
인휠 독립구동 후륜 전기자동차의 구동력 및 선회 제어에 관한 연구
김상호(Sangho Kim),김창준(Changjun Kim),김동형(Donghyung Kim),최주영(Jooyoung Choi),최민석(Minsuk Choi),한창수(Changsoo Han) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
In this paper, the method for the traction and yaw-rate control for the rear in-wheel independent drive electric vehicle is presented. An electric vehicle which is equipped with the in-wheel motors has advantages in terms of control. For the traction control, the slip ratio of the vehicle is regulated by controlling the wheel speed as the target value. And for the yaw-rate control, the desired yaw-rate is calculated from the reference yaw-rate model with the driver’s steering input. To follow the desired yaw-rate, the yaw-moment from the torque difference of the two rear wheels assists the vehicle’s lateral motion. Then from these two kinds of control method, the cooperative control method for the vehicle can be defined. The proposed method is simulated using TruckSim software with MATLAB Simulink. The simulation result shows the performance and the effectiveness of the proposed method.
SAB 전개성능 향상을 위한 신 커버링 구조에 대한 연구
김상호(SangHo Kim),편종권(JongKweon Pyun),김영욱(YeongUk Kim),김재영(JaeYoung Kim),김희일(HoeIl Kim),손유지(YuJi Son) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Most passengers wish their vehicles safer and the car OEMs are enlarging the adaptation of safety part, especially, many kind of air-bags, Driver Air Bag, Passenger Air Bag, Curtain Air Bag, Knee Air Bag. In vehicle, seat also includes the SAB(Side Air Bag) in the outer side of the back part. It protects passenger’s side body in car colliding. Each OEM has a unique inflation technology in the SAB. In this paper, the new inflation method is introduced for taking action against the patent infringement by the competitor company. In the process of the invention, the patent map of world OEM is investigated. The new technology improves inflation performance compared to the other company’s one. The result also obtained a patent.
김상호(Sangho Kim),김동현(Donghyun Kim),한창희(Changhee Han),김원일(Wonil Kim) 한국지능시스템학회 2008 한국지능시스템학회논문지 Vol.18 No.6
이 논문에서 우리는 선형결합으로 표현된 여러 가지 주가지수의 관계를 찾아내어 주식의 등락을 예측하는 방법을 제안한다. 제안된 방법에서 중요한 점은 전체 주가지수 중에서 예측하는 지수와 관계가 있는 주가지수들을 선택하는 것과 그 주가지수의 적절한 관계를 찾아내는 것이다. 전체 주가지수와의 관계를 설정하는 것은 불가능하기 때문에 밀접한 관계가 있는 주가지수만을 이용하였고 주가지수의 관계를 찾는 방법으로 유전자 알고리즘(GA : Genetic Algorithm)을 사용하였다. 제안된 방법을 이용하여 2005년부터 2007년도까지의 실제 주가지수를 가지고 모의투자 시뮬레이션을 한 결과 모의 투자금액이 230% 증가하는 것을 확인하였다. In this paper, we propose a novel approach predicting the fluctuation of stock index by finding a relation in various stock indexes that are represented by linear combinations. The important points are to select stock indexes related to predicting indexes and to find the proper relations in them. Since it is unattainable to use entire stock indexes relation, we used only data that are closely associated with each other. We used Genetic Algorithm(GA) to find the most suitable stock-index relation. We simulated the investment in years from 2005 to 2007 with each real index. Finally we verified that the investment money increased 230 percents by the proposed method.
인-휠 모터 전기자동차의 비대칭로 운동 제어방법에 대한 연구
김상호(Sangho Kim),김창준(Changjun Kim),김동형(Donghyung Kim),최주영(Jooyoung Choi),한창수(Changsoo Han) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
This study propose the control algorithm for a rear wheel driving electric vehicle with in-wheel motor on split-μ road. This control algorithm is developed to improve the vehicle stability on split-μ road. The control algorithm consists of direct yaw moment control and slip ratio control. The direct yaw moment control uses the different torque which generated by left and right wheels. And the slip ratio control uses the target slip ratio and PID motor control. By using this method, we can suppress the yaw rate on split-μ road. The effectiveness of the proposed method is verified by the simulation using TruckSim software.
인-휠 전륜 구동 전기자동차를 위한 선회 운동제어에 관한 연구
김상호(Sangho Kim),김창준(Changjun Kim),미안 아쉬팍 알리(Mian Ashfaq Ali),김동형(Donghyung Kim),백성훈(Sunghoon Back),한창수(Changsoo Han) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
This paper proposes the control algorithm for a front wheel drive electric vehicle with in-wheel electric motor. This control algorithm is developed to improve the lateral vehicle dynamic motion. Driving Control algorithm for controlling the lateral movement of the vehicle consists of the direct yaw moment control algorithm and torque distribution algorithm. The direct yaw moment control algorithm determines the desired yaw moment for neutral steering performance and calculates the desired longitudinal force for longitudinal drive. Torque distribution algorithm defines the desired wheel torque on the left and right wheel from the desired yaw moment, desired longitudinal force and tire forces. The proposed control algorithm is simulated using CarSim software. The performance is verified by comparing the trajectory results and yaw rate results of a vehicle model with and without this control algorithm.
김상호(Sangho Kim),김창준(Changjun Kim),김동형(Donghyung Kim),최주영(Jooyoung Choi),박철(Cheol Park),윤주만(Juman Yoon),한창수(Changsoo Han) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In-wheel independent driving electric vehicle system with an in-wheel motor mounted on each wheel has the three advantages in terms of control. Three advantages are generation of the fast torque, control of the accurate torque and generating different torques at the left and right wheels. This paper study the slip-ratio control for in-wheel motored rear wheel drive electric vehicle on a slippery road. The slip-ratio is also defined by the maximum friction coefficient. And PID motor control with target slip-ratio is used. The proposed slip-ratio control is verified by the simulation using TruckSim software and the experiment using in-wheel motored electric vehicle.