• 대한한의학회지
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• 제18권1호
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• pp.499-505
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• 1997

This experiment was performed in order to research the effects of moxibustion on peripheral circulation. The results were as follows : 1. Distribustion of sex: male 5 cases, female 15 cases 2. Distribustion of age: 20s case, 30s 1 case, 40s 4 cases, 50s 7cases, 60s 6 cases, 70s 1 case. 3. After moxibustion, there were no changes in 4cases but 16cases were improved in peripheral blood circulation.

• 한국연소학회:학술대회논문집
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• 한국연소학회 1998년도 제17회 KOSCI SYMPOSIUM 논문집
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• pp.47-57
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• 1998

Characteristics of evaporation, flame propagation at moment of ignition and steady state combustion, and flow characteristics of combustible mixture have been investigated by experiments and computational simulation for the evaporation pot type kerosene burner. The results show how to design the evaporation pot in order to minimize the sticking of residual tar, and also indicate that symmetrical flame propagation along the flame ring from the kernel of ignition is achieved by modication of the shape of ignition part. In the case of steady state combustion, the uniform distribustion of flame at each flame hole is accomplished by proper modification of the piping instruments. The improved design of the structure and parts of the kerosene burner make up enhancement of flame stability and considerable reduction of CO and bad smell emission at moment of ignition.

• 천문학회보
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• 제42권2호
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• pp.61.4-62
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• 2017

In this study we have made a statistical investigation on the kinematic classification of coronal mass ejections (CMEs) using about 4,000 SOHO/LASCO CMEs from 1996 to 2015. For this we use their SOHO/LASCO C3 data and exclude all poor events. Using the constant acceleration model, we classify these CMEs into three groups: Acceleration group, Constant Velocity group, and Deceleration group. For classification we adopt four different methods: Acceleration method, Velocity Variation method, Height Contribution method, and Visual Inspection method. Our major results are as follows. First, the fractions of three groups depend on the method used. Second, the results of the Height Contribution method are most consistent with those of the Visual Inspection method, which is thought to be most promising. Third, the fractions of different kinematic groups for the Height contribution method are: Acceleration (35%), Constant speed (47%), and Deceleration (18%). Fourth, the fraction strongly depend on CME speed; the fraction of Acceleration decreases from 0.6 to 0.05 with CME speed; the fraction of Constant increases from 0.3 to 0.7; the fraction of Deceleration increases from 0.1 to 0.3. Finally we present dozens of CMEs with non-constant accelerations. It is found that about 40 % of these CMEs show quasi-periodic oscillations.

• 한국어류학회지
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• 제24권1호
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• pp.56-61
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• 2012

멸종위기 어류 미호종개의 분포양상을 조사하고 대표서식지의 서식개체수를 추정하였다. 과거 (1984~2004)에는 20개 지점에서 출현하였으나 현재 (2006~2011)는 6개 지점에서만 서식이 확인되어 분포지역이 급격히 감소한 것으로 추정된다. 출현지역은 대부분 모래로 이루어진 하천 하류부였으며 서식구간은 매우 협소하였다. 대표서식지인 백곡천과 지천의 서식개체수를 표지-재포획법 등으로 추정한 결과 백곡천은 9,106개체, 지천은 34,717개체가 서식하는 것으로 추정되었다.

• 한국자동차공학회논문집
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• 제2권4호
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• pp.91-99
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• 1994

Tunable KrF Excimer Laser is used here for measuring OH and $O_2$ density distribustion in an open $H_2$/air premixed flame and in a combustion bomb. Laser Rayleigh Scattering(LRS) and Planar Laser Induced Predissociative Fluorescence(PLIPF) methods are used to obtain two-dimensional images of total and specific densities. Laser Excitation wavelengths are calibrated via flame images and combustion bomb images show good qualitative a greement with theoretical calculation. Furthermore images in a combustion bomb can be developed to study real Spark-Ignition engine combustions. Our experimental images show that there are no more collisional quenching problem at high pressure environment(including atmospheric pressure) using predissociative fluorescence technique. Further development to obtain two-dimensional temperature dustribution is ready to use eventhough it is not reported in this paper.