• 보존과학연구
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• s.28
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• pp.105-119
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• 2007

Restoration of earthenware is largely composed of selection of clay, making(forming), and firing. This study lays emphasis on the making method and open-air firing. For making methods, This study used coiling method partly with priority given to ring method. The most significant feature of this restoration work is the making method of tap-forming, in which 외박자(out tap instrument) and 내박자(inter tap instrument) would be tapped and formed. For firing, This study used open-air firing method in the most primitive way. This method needs no special device and equipment and makes the work more simple and easy. The previous study was on the making method by archeological and preservation-scientific research but this study emphasized the restoration work in an actual earthenware maker's position. Through the result of this study, This study wish this would be an opportunity to present another model of various restoration methods for other researchers those who wanted to participate in the restoration and openair firing.

• Journal of Society of Preventive Korean Medicine
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• v.7 no.1
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• pp.79-86
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• 2003

This study was carried out to evaluate cytotoxic effects of Houttuynia cordata $T_{HUNB}$ extracts on A549(lung cancer), B16(mouse melanoma), MDA-MB231(breast cancer) and SNU-C4(colon cancer) cell lines. We have determined by 3-(4, 5-dimethylthiazol-2-Yl)-2, 5-diphenyl-2H-tetrazoliumbromide(MTT) assay. The $150{\mu}g/ml$ concentration of chloroform extract of Houttuynia cordata $T_{HUNB}$ was shown significantly antitoxic activity on MDA-MB231$(65.96{\pm}5.68%)$ and SNU-C4$(55.94{\pm}7.39%)$ cell lines.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.1002-1008
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• 2011

Turnout is a mechanical installation enabling railway trains to be guided from one track to another at a railway junction. there are classified variously according to rail type, sleeper type, fastening system, track type. Construction of concrete track are on the increase recently to secure the safety of track structure as well as to reduce the maintenance cost. SFC fastening system used the plain track a lot and for those reasons, The fast clip turnout demand growing to improving efficiency of the maintenance cost by unification of fastening clip on whole line. in this study is about development of the fastening system for new turnout using fast clip. this fastening system assembled elasticity pad underneath a base plate. its can change stiffness how to adjust contact surface area of elasticity pad Developed fastening system have passed test according to rule of KRS-TR0014-09R (rail fastening system) and Performance Certification by KR.

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.287-296
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• 2011

Turnout is a mechanical installation enabling railway trains to be guided from one track to another at a railway junction. A movable nose crossing frog is a device used at a railway turnout to eliminate the gap at the common crossing (High manganese, block, assembly crossing)which can cause impact damage, noise and vibration. Our government has a plan speed up of conventional line to 250km/h semi-high speed. We had already developed flexible turnout with fixed crossing(High manganese) and SFC fastening system can cover in the semi-high speed line In this study is about development of the movable nose crossing turnout available Semi-high speed line on concrete track. This paper describes about geometry, attack angle, bending stress at the nose, switching force, safety of continuous welded long rails. This movable nose crossing turnout is expected greatly increases passing speed of turnout in national railway.

• 한국연소학회:학술대회논문집
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• 2001.11a
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• pp.73-82
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• 2001

The characteristics of the catalytically supported thermal combustion with Pd-based catalyst using the bench scale high pressure combustor has been investigated up to 7 atm. The emission of $NO_{\chi}$ depends on the preheating temperature and the excess air ratio. Most $NO_{\chi}$ emission seems to come from the pre-burner for the preheating of the inlet gas. Decreasing excess air ratio in the inlet gas below 1.5 results in the stable catalytically supported thermal combustion in the post combustion region while the $NO_{\chi}$ emission increased up to 15 ppm. Further, the increase of the pressure shows the dramatic increase of the emission CO and THC. However, the $NO_{\chi}$ emission decreased slightly due to the lower combustion temperature at the high pressure.

• Journal of the Korean Chemical Society
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• v.36 no.5
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• pp.760-763
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• 1992

A new ${\beta}$-lactam compound, 6-thiocyanopenicillanic acid(1a) was prepared by the reaction of diazonium salt of 6-aminopenicillanic acid with sodium thiocyanate. Reaction of 6-thiocyanopenicillanic acid(1a) with p-nitrobenzyl bromide, chloromethylpivalate and 1-chlorodiethylcarbonate, respectively, afforded the corresponding esters(1b∼d)

• Journal of the Korean Chemical Society
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• v.35 no.5
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• pp.575-579
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• 1991

Reaction of 6${\beta}$-bromopenicillanic acid(4a) with p-nitrobenzylbromide, 3-bromophthalide, chloromethylpivalate and 1-chlorodiethylcarbonate afforded 6${\beta}$-bromopenicillanates(4b~4e). New ${\beta}$-lactam compound, 6-(carboxymethylthio)penicillanic acid(5a) and the other esters(5b~5e) were prepared by nucleophilic substitution reaction of 6${\beta}$-bromopenicillanic acid(4a) and the other esters(4b~4e) with thioglycolic acid.

• 한국연소학회:학술대회논문집
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• 2002.11a
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• pp.71-79
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• 2002

The characteristics of the catalytically supported combustion with Pd and Pd/Pt based catalyst using the bench-scaled high pressure combustor have been investigated up to 5atm. This study aimed to investigate combustion characteristics of the stable flame attached to the exit of catalyst bed and NOx emissions with respect to the position of axial and radial direction in the combustor. NOx emissions were increased along the axial distance after the catalyst bed exit and radially decreased from the center to the wall of the combustor. At the higher pressure, the NOx emission decreased slightly due to the lower flame temperature in the combustor at the high pressure.

• The Journal of Internal Korean Medicine
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• v.10 no.1
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• pp.125-136
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• 1989

This study was investigated to clarify the effect of Sin Bee Tang (神秘湯) on the renal function, arterial blood pressure and plasma cortisol. The results obtained were follows; 1. Urine volume and glomerular filtration rate were decreased significantly after Sin Bee Tang water extract, 0.1ml/kg, administration. 2. Glomerular filtration rate, renal plasma flow and urinary excretion of electrolytes were increased significantly after Sin Bee Tang water extract, 0.25ml/kg, administration. 3. Plasma cortisol concentration increased significantly after Sin Bee Tang water extract, 0.25ml/kg, administration. These results suggest that the therapeutic action of Sin Bee Tang for 'Su Chun (水喘)' has a relation with the increase of plasma cortisol and renal hemodynamic effect.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11a
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• pp.241-244
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• 2002

컴퓨터와 정보기술 발달은 독립적인 e-비즈니스 솔루션들을 대거 등장하게 하고, 그로 인하여 분산 환경내 이종 시스템간의 원활한 정보의 공유와 황용을 위하여 동기화 필요성이 대두되고 있다. 이러한 독립된 플랫폼 상의 e-비즈니스 솔루션들간의 정보 공유를 위한 데이터 동기화는 중요한 문제이다. 따라서 본 논문에서는 각 e-비즈니스 프로세스들의 상호 운용성 보장과 분산처리 시스템 환경의 클라이언트/서버 구조의 문제를 해결할 수 있는 이동에이전트 시스템을 이용한 데이터 동기화를 언급한다.