• Title/Summary/Keyword: Remedy

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A Study on Development of Broad-band Electromagnetic Wave Absorber for EMI/EMC (EMI/EMC 대책용 광대역화 전파흡수체의 개발에 관한 연구)

  • Jun, Sang-Yup;Kim, Dong-Il
    • Journal of the Korean Institute of Navigation
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    • v.15 no.4
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    • pp.13-25
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    • 1991
  • Recently, according to the development of electromagnetic wave technique, more frequent and powerfull wave radiation becomes inevitable and so electromagnetic environments has become worse accordingly. Electromagnetic wave absorber is known the most effective preventive remedy to cope with the EMI/EMC problem. To realize broad-band electromagnetic wave absorber, triple layered structure where an air layer is interposed between a sintered ferrite layer and a ruber ferrite layer was adopted. Computer simulation for optimum design and evaluation of absorption characteristics has been made. The results shows that designed broad-band electromagnetic wave absorber can be useful for EMI/EMC problem, especially reducing TV ghosts in both VHF and UHF bands by additionally an air layer and a thin rubber ferrite layer on the surface of conventional ferrite, without replacing it.

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Studies on the Development of the Resources of Korean Crude Drugs (II) -Amygdalin Contents in the Seeds of Some Prunus spp. in Korea- (한국산(韓國産) 생약자원(生藥資源) 개발연구(開發硏究) (제2보)(第2報) -Prunus tomentosa의 약효성분에 관하여-)

  • Choi, Eung-Chil;Han, Dae-Suk;Kim, Young-Ho;Hong, In-Hyuk
    • Korean Journal of Pharmacognosy
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    • v.14 no.2
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    • pp.64-66
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    • 1983
  • HPLC is a useful method for identifying amygdalin which has been the subject of considering controversy for cancer remedy. The resolution of amygalin was satisfactory and the separation of amygdalin was accomplished using carbohydrate analysis column, mobile phase of acetonitrile: $H_2O$ (90:10), and UV detector. Quantitative analysis showed that amygdalin contents of Prunus tomentosa, P. serrulata, and P. ishidoyana (Amygdalaceae) were 2.18, 2.41, and 2.26%, respectively. It was suggested that the seed of Prunus species was worth useful resource of amygdalin.

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An Experimental Study on the Increase of the Bearing Capacity on Sandy Ground due to Micropile Reinforcement (마이크로파일로 보강된 모래지반의 지지력 증가효과에 관한 실험적 연구)

  • 김정동;임종철;이태형
    • Proceedings of the Korean Geotechical Society Conference
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    • 2003.03a
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    • pp.411-416
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    • 2003
  • As rapid industrialization continues in these days, construction in the down town areas increases. Since constructions are performed around old and existing structures, the need to provide reinforcements to protect the existing structures from collapse and damage arises. Furthermore, if the construction is to take place in the down town area, difficult work space and damage caused by noise, vibration and collapse of structure can't be ignored. Among the remedial measures available today, micropile reinforcement is considered the best method to remedy these problems. But up to the present the characteristics of micropiles and ground behaviour has not been proven and no standard design is not yet available. Therefore, most design are performed based on previous experiences. In this study, the difference in the bearing capacity with changing reinforcement angle, space and sphere around foundation was monitored. These results were induced to broaden heighten the limits of micropile application.

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Effect of the Antler (Deer Horn) Water Extract on the Stress Resistance in Mice (녹용수침액(鹿茸水浸液)이 Mouse의 Stress 방어작용에 미치는 영향(影響))

  • Ko, Geun-Il
    • Journal of Pharmaceutical Investigation
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    • v.11 no.2
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    • pp.11-15
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    • 1981
  • Antler, deer horn, occupies a particular place in oriental folk medicine as so called tonic remedy. In order to study on the effects of Antler water extract on stress resistance in mice, quantitative response was measured for the change of spontaneous activity by chemical stress drugs in the control group or the Antler water extract pretreated group. Spontaneous activity in mice was measured by counting the number of interruptions of light. The results of experiment were summerized as follows; I) In case of administrating Antler water extract 10mg/kg, 20mg/kg, 50mg/kg, and 100mg/kg, no significant change was observed in spontaneous activity in comparison with the control group. II) In case of administrating Antler water extract for 5 days or 10 days, no significant change was observed in spontaneous activity by chemical stress drugs, caffein and chloropromazine, in comparison with the control group.

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Pharmacognostical Studies on the "Se Sin" (세신의 생약학적 연구)

  • 박정희
    • Korean Journal of Plant Resources
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    • v.9 no.2
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    • pp.183-188
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    • 1996
  • Chinese crude drug 'Se Sin'(細辛)has been used to cure headache, cough and expectorant. To the botanical origin of 'Se Sin', Zhong-yao-zhi(中葯志) reported Asarum heterotropoides var. mandshuricum. A. sieboldii and A. sieboldii var. seoulensis, and Zhong-yao-da-ci-dian(中葯大辭典) reported Asarum heterotropoides var. mandshuricum and A. sieboldii of Aristolochiaceae. In Korea, this crude drug has been used as a Korean folk remedy for tothache and aromatic. The botanical origin of 'Se Sin' is considered to be Asarum species of Aristolochoaceae. But there has no pharmacognostical confirmation on it. To clarify the botanical origin of 'Se Sin', we studied on the anatomical characteristics of Asarum species growing wildly in Korea i.e. A. maculatum, A. sieboldii, A. sieboldii var. seoulensis, and of 'Se Sin' from Korea on Korean market. Through our studies, the botanical origin of 'Se Sin' from Korea was proved to be whole plant of Asarum sieboldii and A. sieboldii var. seoulensis.

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Study on Social-consciousness about the folk Remedies of Oriental Medicine Doctors (민간요법에 대한 한의사의 의식형태 조사연구)

  • Oh Se Chang;Kwon Young Kyu;Kim Kwang Joong
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.17 no.1
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    • pp.25-30
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    • 2003
  • On the ground of researches in social consciousness about the folk remedies, both of them, people and oriental medicine doctors, feel strongly the relative importance and the necessity of the folk remedies. But the folk remedy had not groped for proper adoption and not shared in the benefits actually. Therefore the oriental medicine doctors present a direct guide for use, instead of leaving people to use improperly. And the oriental medicine doctors are in need of making a guide for efficient use of the folk remedies at the existing disease types.

A Case Report for a Toxic Liver Injury Caused by Voluntary Administration of Smilacis Chinae Radix (청미래덩굴 뿌리 복용으로 발생한 독성간염환자 1예의 치료보고)

  • Kim, Jin-Hee;Cho, Jung-Hyo;Son, Chang-Gue
    • The Journal of Internal Korean Medicine
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    • v.33 no.4
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    • pp.609-614
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    • 2012
  • Drug-induced liver injury (DILI) is a common cause of acute hepatitis. Regarding the risk of DILI from herbal preparations, there are controversial issues such as exaggerated reports straying far from the truth and lack of discrimination between herbal drugs and folk remedies or food supplements. This study reported one case of a patient with DILI caused by Smilacis Chinae Radix and cured in an Oriental hospital. Smilacis Chinae Radix has been used as an anti-inflammatory, anti-microbial, detoxification and anticancer compound, as a folk remedy. This report would provide helpful information for management of DILI by folk remedies or herbal drugs.

A Study on FIBEX Automatic Generation Algorithm for FlexRay Network System (FlexRay 네트워크 시스템을 위한 FIBEX 자동 생성 알고리즘에 관한 연구)

  • Park, Ji-Ho;Lee, Suk;Lee, Kyung-Chang
    • IEMEK Journal of Embedded Systems and Applications
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    • v.8 no.2
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    • pp.69-78
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    • 2013
  • As vehicles become more intelligent for safety and convenience of drivers, in-vehicle networking systems such as controller are network (CAN) have been widely used due to increasing number of electronic control unit (ECU). Recently, FlexRay was developed to replace CAN protocol in chassis networking systems, to remedy the shortage of transmission capacity and unsatisfactory real-time transmission delay of conventional CAN. However, it is difficult for vehicle network designers to calculate platform configuration registers (PCR) and determine a base cycle or slot length of FlexRay. To assist vehicle network designers for designing FlexRay cluster, this paper presents automatic field bus exchange format (FIBEX) generation algorithm from CANdb information, which is de-facto standard database format for CAN. To design this program, structures of FIBEX, CANdb and relationship among PCR variables are analyzed.

A Krein Space Approach for Robust Extended Kalman Filtering on Mobile Robots in the Presence of Uncertainties

  • Jin, Seung-Hee;Park, Jin-Bae
    • 제어로봇시스템학회:학술대회논문집
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    • 2003.10a
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    • pp.1771-1776
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    • 2003
  • In mobile robot navigation, one of the key problems is the pose estimation of the mobile robot. Although the odometry can be used to describe the motions of the mobile robots quite simple and accurately, the validities of the models are limited by a number of error sources contaminating the encoder outputs so that applying the conventional extended Kalman filter to these nominal model does not yield the satisfactory performance. As a remedy for this problem, we consider the uncertain nonlinear kinematic model of the mobile robot that contains the norm bounded uncertainties and also propose a new robust extended Kalman filter based on the Krein space approach. The proposed robust filter has the same recursive structure as the conventional extended Kalman filter and can hence be readily designed to effectively account for the uncertainties. The computer simulations will be given to verify the robustness against the parameter variation as well as the reliable performance of the proposed robust filter.

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