• Progress in Medical Physics
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• v.2 no.2
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• pp.155-160
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• 1991

We have studied the effective point of measurement for cylindrical ion chamber in water phantom for medical electron beams. Markus parallel plate chamber water phantom are used for the measurement of depth dose to determine the depth of the effective point of measurement for various energies(for electron 6MeV, 9MeV, 12MeV, 16MeV, and 20MeV; Co-60; for photon 6MV, 15MV). Cylindrical ion chambes(PTW233643 with r=2.75mm, PR-05P with r=2mm, and PM30 wiht r=15mm are used for the measurement of depth dose by same mtethod and the values of d$\_$50/ and R$\_$p/ obtained by three cylindrical chambers were compared with those of a flat chamber. From this we could evaluate the effective measuring points of cylindrical ion chamber. The effective point of measurement was estimated as 0.4～0.6r shifted toward surface from the center of the chamber for electron beam, 0.3～0.7r for $\^$60/Co X-ray.

• Journal of Korean Medical classics
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• v.18 no.4 s.31
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• pp.27-43
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• 2005

통과대(通過對)${\ulcorner}$내경(內經)${\lrcorner}$ 중출현적조신적개념급용조신치병적방법적연구(中出現的調神的槪念及用調神治病的方法的硏究), 득출여하결론(得出如下結論): 조신이양생지의(調神以養生之意), 용우지금(用于至今). ${\ulcorner}$내경(內經)${\lrcorner}$중신지의(中神之意), 우기표현위여우주자연지신(尤其表現爲與宇宙自然之神)[천신(天神)]상응적인체지신(相應的人體之神)[인신(人神)]상(上), 즉천인상응적사상교위돌출(卽天人相應的思想較爲突出) 형신상호관계상(形神相互關係上), 재유지형신합일적사상적동시(在維持形神合一的思想的同時), 비기양형경가중시어조신(比起養形更加重視於調神). 재양생방면(在養生方面), 조신의조시간급공간(調神依照時間及空間), 분위사시조신화오장신조신(分爲四時調神和五臟神調神). ${\ulcorner}$소문(素問).사기조신대론(四氣調神大論)${\lrcorner}$적요지시이사시출현적자연계적변화규율(的要旨是以四時出現的自然界的變化規律), 응대청정적우주정신래수련신심(應對淸靜的宇宙精神來修練身心). ‘이념요법(移念療法)’시통과개변재인체오장내정기적운행위치(是通過改變在人體五臟內精氣的運行位置), 진행치료적방법(進行治療的方法). 기내용개괄료기타각종정신요법(其內容槪括了其他各種精神療法). 대지언고론요법적한의학해석(對至言高論療法的韓醫學解釋), 불시이이유오행혹음양이론작위의거(不是以已有五行或陰陽理論作爲依據), 이시가종사상의학중조도. 기원인시사상의학적출발점(其原因是四象醫學的出發點), 불시이단순적육체무병작위기목적(不是以單純的肉體無病作爲其目的). 저일점(這一點), 종명확지표현재수세보원적성명사단론중(從明確地表現在壽世保元的性命四端論中). 대생리병리독특적유심론관(對生理病理獨特的唯心論觀), 시이제마선생탁월관점(是李濟馬先生卓越觀点). 한방음악치료초월료이행동주의심리학위중심(韓方音樂治療超越了以行動主義心理學爲中心), 발전기래적기유적음악요법적국한성(發展起來的旣有的音樂療法的局限性), 약여약물(若與藥物), 침구치료병용(鍼灸治療倂用), 불근가이치료신경정신질환(不僅可以治療神經精神疾患), 환가이치료기타각종신체질환(還可以治療其他各種身體疾患). 기공시이응신(氣功是以凝神), 의수(意守), 의념등표현(意念等表現), 작위기주요조신방법적일종수신법(作爲其主要調神方法的一種修身法).

• Clinical and Experimental Pediatrics
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• v.52 no.9
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• pp.1044-1047
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• 2009

A 13-year-old girl with psoriasis of the elbow, trunk, and face suddenly developed a severe headache followed by left hemiparesis and facial palsy. Brain magnetic resonance imaging showed an acute infarction of the right temporofrontal lobe and basal ganglia on the T2- and diffusion-weighted images. Cerebral angiography showed pre-occlusive irregular scalloped stenosis (99%) in the proximal M1 segment of the right middle cerebral artery and a web-like stenosis at the supraclinoid portion of the right internal carotid artery (ICA) suggestive of a spontaneous intracranial ICA dissection. The patient was administered a low dose of dipyridamole, and a rehabilitation program was initiated. Headache, left motor weakness, and facial droop improved within a week. However, mild left facial palsy and reduced fine motor function of the left hand were still present after 3 weeks. We report a rare case of spontaneous intracranial ICA dissection in a child with psoriasis.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.15 no.1
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• pp.147-154
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• 2002

The dynamic load caused by sloshing of internal fluid severely affects the structural and control stabilities of cylindrical liquid containers accelerating vertically. If the sloshing frequency of fluid is near the frequency of control system or the tank structure, large dynamic force and moment act on launching vehicles. For the suppression of such dynamic effects, generally flexible ring-type baffles are employed. In this paper, we perform the numerical analysis to evaluate the dynamic suppression effects of baffle. The parametric analysis is performed with respect to the baffle inner-hole diameter and two different baffle spacing types : equal spacing with respect to the tank and one with respect to the fluid height. The ALE (arbitrary Lagrangin-Eulerian) numerical method is adopted for the accurate and effective simulation of the hydrodynamic interaction between fluid and elastic structure.

• Elastomers and Composites
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• v.48 no.4
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• pp.300-305
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• 2013

Part shrinkage in injection molding is inevitable phenomenon. Thus, it is necessary not only study on the reducing part shrinkage but characterization of part shrinkage. In this study, part shrinkage in injection molded 2.5 dimensional annular shaped specimens has been studied using glass fiber reinforced PC. Annular shaped specimens were designed with various sizes of outer diameter and thickness. Injection temperature, packing time and packing pressure were selected for operational conditions. Profile variations of outer and inner diameters of molded specimens for various operational conditions were investigated. Sizes of outer and inner diameters of injection molded specimens were smaller than the sizes of mold. Part shrinkage decreased as outer diameter and thickness increased. Part shrinkage showed anisotropic behavior and it depended upon gate location. Subsequently, molded specimens were not circular but oval in shape, and showed the largest shrinkage in the direction of gate. It was realized that the mold design such as gate design is important to control the shape of molded products.

• Journal of Korean Medical classics
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• v.18 no.2 s.29
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• pp.124-144
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• 2005

${\ulcorner}$영추(靈樞).잡병(雜病)${\lrcorner}$논술료궐기사증(論述了厥氣四證,), 심통육증(心痛六證), 함통이증, 이급슬통(以及膝痛), 후통(喉痛), 치통(齒痛), 이롱(耳聾), 학(虐), 요통(腰痛), 기역(氣逆), 항통(項痛), 복통(腹痛), 위궐(萎厥), 육(戮), 홰등각증적병정, 진단급자법(診斷及刺法). 인해편소논술적내용병미국한어특정적질병(因該篇所論述的內容幷未局限於特定的疾病), 이시논술료임상상견적제다병증(而是論述了臨床常見的諸多病證), 소이편명칭위잡병(所以篇名稱爲雜病). 잡병시인내상혹외감소치적질병(雜病是因內傷或外感所致的疾病), 재고대상한등외감성질환(在古代傷寒等外感性疾患), 대인류생명구성료흔대위협, 단시도료현재유어현대문명발달(但是到了現在由於現代文明發達), 이급생활방식적다양화(以及生活方式的多樣化), 내상잡병각성료갱대적위협인소(內傷雜病却成了更大的威脅因素). 본편재(本篇在)${\ulcorner}$황제내경장구색인(黃帝內經章句索引)${\lrcorner}$분위료오절(分爲了五節), 재(在)${\ulcorner}$영추경교석(靈樞經校釋)${\lrcorner}$ 급(及)${\ulcorner}$황제내경영추경어역(黃帝內經靈樞經語譯)${\lrcorner}$분위료이십구절(分爲了二十九節), 필자기어편이상적고려(筆者寄於便利上的考慮), 준순(遵循) ${\ulcorner}$황제내경장구색인(黃帝內經章句索引)${\lrcorner}$이분위오절진행료연구(而分爲五節進行了硏究). 본편기재료상견적흔다잡병, 재임상상유흔대적연구가치. 단시통과역대다차전초(但是通過歷代多次轉抄), 유흔다오식, 착간(錯簡), 가차적부분(假借的部分), 인차유흔다불역리해적지방. 여과불참조다종판본화역대주석가적연구성과(如果不參照多種版本和歷代註釋家的硏究成果), 취무법진정영회기본의(就無法眞正領會其本意). 기어저일점(寄於這一點), 본편논문연구료역대판본화주석가적견해(本篇論文硏究了歷代版本和註釋家的見解), 병진행료교감화교주(幷進行了校勘和校註), 재가어료현토급국어주석(再加於了懸吐及國語注釋), 이기갱유조어정확지리해원문적본의(以期更有助於正確地理解原文的本意).

• Journal of Korean Medical classics
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• v.28 no.1
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• pp.71-95
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• 2015

Objectives : I'd like to introduce a Korean medical scientist, Lee Gyoojoon (李圭晙, 1855-1923)'s achievements about Huangdi's Internal Classic (黃帝內經, HIC) to examine the Section of Viscera and Bowels to inspect the Medical Classics (稽經藏府篇, SVBIM) of the Double grinded Medical Mirror (醫鑑重磨, DMM), which is a medical book published in 1922, his last studies. And I'd like to describe its meaning of medical history. Methods : For this, I compared the DMM with two primary texts, the representative medical books of Joseon dynasty, Treasured Mirror of Eastern Medicine (東醫寶鑑, TMEM) and Lee's former research result of HIC, Major Essentials of Huangdi's Internal Classic Plain Question (黃帝內經素問大要, MEHIC), in the aspects of the original text, annotation, editing, attached theses, and so on. Results : Lee Gyoojoon criticized the TMEM in two aspects. First, it was unfocused and miscellaneous, second, it intended to help Yin Qi (陰氣) and reduce Yang Qi (陽氣) so that it regards a prime mover, Yang Qi, as an enemy. In order to solve these problems he deleted miscellaneous articles and sort out the points to accord with the HIC. As a result, he had written the Section of SVBIM of the DMM in the form of revising the subtitles or refuting the contents of TMEM and quoted the partial texts of MEHIC to be written by the view of Supporting Yang Qi (扶陽). Conclusions : Lee Gyoojoon proposed the Supporting Yang Qi medicine to preserve the Heart fire (心火) based on his lifelong Neo-Confucianism (性理學) study. The Section of SVBIM of the DMM showed how to apply his medical theory, which is achieved by the study of the medical classic HIC to real clinical medicine through a medium of the TMEM. In addition, it could explain concretely how the Confucianists studied the medicine and how Confucianism can impact to the development of medical theory.

• Clean Technology
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• v.8 no.3
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• pp.141-149
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• 2002

In the present study, flow fields inside a photocatalysis air cleaning system have been investigated to obtain the data for optimum design of the system. For this investigation, we first predicted the pressure drop of a photocatalysis filter. Based on this calculation, we replaced the filter by the porous media and analysed the performance of the entire system. This porous media assumption could predict characteristics of the cylindrical photocatalysis filter within 1%. Two cases of the cylindrical filter were considered in the present calculations. The first case had an inside diameter of 6 mm, while the second case had an inside diameter of 20 mm. It was found that the first case of filter showed a pressure drop three times higher than that of the second case. In addition, the cylindrical filter equipped with a housing to hold a number of cylinders in a bundle was also analyzed. When the housing was present, the pressure drop increased. It was found that the pressure drop is 8 times higher than that of the case when the housing was not equipped.

• Journal of Biomedical Engineering Research
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• v.23 no.5
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• pp.375-383
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• 2002

Aneurysm embolisation method using coils have been widely used. Micro coils are introduced via a small catheter, and are packed inside of aneurysm sac, which induces intraaneurysmal flow stagnation and thrombus formation. When partial blocking of an aneurysm is inevitable, the location of coils is important since it changes the flow patterns inside the aneurysm, which affect the embolisation process. We measured the flow field inside the partially blocked lateral aneurysm models in vitro, and tried to suggest the effective locations of coils for aneurysm embolisation. Velocity fields are measured using a particle image velocitimeter for different coil locations- proximal neck, distal neck, proximal dome and distal dome. Flow into the aneurysm sac was significantly reduced in the distally blocked models, and coils at distal neck blocked inflow more effectively comparing to those at distal dome. This study suggests that distal neck should be the most effective location for aneurysm embolisation.

• Journal of Chest Surgery
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• v.30 no.6
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• pp.613-616
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• 1997

We present a case of 58-year-old (tamale with dilated cardiomyopathy(DCMP) in whom we performed left ventricular(LV) remodeling surgery(Batista operation) to reduce the left ventricle diameter and improve left ventricular unction. The patient was admitted September 1996 with heart failure NYHA class IV. There was severe orthopnea and peripheral edema. 2-D echocardiography(Echo) showed DCMP with the ejection fraction(EF) I5%, LV end diastolic dimension(LVEDD) 80mm, mitral regurgitation(MR) grade IV, tricuspid regurgitation ('m) grade ll. Preoperative cardiac output(CO) was 1.5/L/min and cardiac index(Cl) was 1.0 L/min/m2. We proceeded with LV remodeling surgery by resection a part of LV lateral wall between both papillary muscle, from the mitral annulus to the LV apex. Size of resected LV wall was 90 $\times$ 100 $\times$ 15 mm. At the mean time, mitral valve and tricuspid valve were repaired. Postoperative 2-D Echo showed the EF 37%, LVEDD 50 mna, trivial MR, no TR. CO was 3.SL/min and Cl was 2.3 L/min/m2. Her fuctional NYHA class was 1.