『良性食道狹窄체 對한 胸骨下食成形術

洪弼勳,周春植 醫藥係社 1958 綜合 醫學 Vol.3 No.5

소디움클로라이트를 이용한 3단계 치아미백세치제의 치아미백효과에 관한 연구

오필선,최유진 대한구강보건학회 2003 大韓口腔保健學會誌 Vol.27 No.1

It is beauty is his true character. Today it was extensively used for tooth whitening by Peroxide systen. This method is using the oxidation of peroxide, and has many defects. Just in time, there was an opinion that Non-peroxide tooth whitening system, an 3-step-tooth whitening toothpaste system, was newly developed at America in 1999, and this system was safe to vital teeth and it quickly got whitening effect. So we reorganized 103 Koreans to two groups( 50persons of experiment group, 53persons of control group). Experiment group han used an 3-step-tooth whitening toothpaste system, control group typical toothpaste. And we measured the value befor the use of respective toothpastes and the value after its use for 3 weeks. The results were as follows ; 1. There was 25.11%of tooth whitening effects in experiment group for 3 weeks(p<0.01). 2. There was no any side effects on experimental toothpaste used for 3 weeks.

婦人服의 購買實態에 관한 硏究

趙必嬌 慶北大學校 師範大學 1979 敎育硏究誌 Vol.21 No.-

This research was mainly designed to find out the purchasing practice of college women's wear with questionnaire survey by special emphasis on outer wears and distributed to 300 college students of Taegu. The results were summarized as follows; 1) As a whole 64.5% of all the new clothes, purchased were custom made, only 34.2% were ready made but more than 80.7% of ready made clothes were blouses, skirts, trousers in that order. Comparatively there were few home made clothes (1.3%). 2) Most of the students have habits to buy clothes at the department store. Especially in the case of blouse, skirt, trousers, these tendencies were overwhelming. 3) Convenience and economy were pointed out as the main merit in the use of ready made clothes, but they complaint that the price are generally high. 4) Unfitness of size and poor design were pointed out the main demerit of ready made clothes. And there were some complaints about poor quality cloth, sewing etc. 5) Various differentiation of size (30.3%), more skilful sewing (28.3%), fashionable design (13.4%), low price (12.6%), various use of texture (12.6%) were the most significant problem in developing ready made clothes.

女大生의 패션行動에 관한 硏究

趙必嬌,소주희 慶北大學校 師範大學 1984 敎育硏究誌 Vol.26 No.-

The purpose of this study was to investigate the relationship between fashion behavior and individuality-conformity of women student in Daegu. Fashion behaviors were measured by professor Kang's test sheet and dress Conformity were extracted by the Clothing behavior expressed by Creek more. The colleted data were produced by computer applying one way ANOVA and compared with the result of F-test. The results indicate that 1. There were significant relationship between dress Conformity-individuality and fashion awareness 2. There were significant relationships between dress Conformity-individuality and fashion performance 3. Fashion awareness and fashion performance have a significant relationahips.

대기 Aerosol의 입도측정에 의한 시정의 계산

김필수,이애경,윤송현 漢陽大學校 環境科學硏究所 1990 環境科學論文集 Vol.11 No.-

대기 aerosol의 크기별 입자수를 측정하고 Mie 이론을 써서 시정을 계산하였다. 1988년 3월과 4월에 입자직경 0.01∼10㎛ 범위의 aerosol을 측정하고 가시광선에 대한 소산효율과 소산계수를 구하였다. 입자직경이 0.1㎛보다 작을 때에는 aerosol이 소산과 시정에 거의 영향을 미치지 않으나 직경 0.1∼1.0㎛ 범위의 aerosol 입자에 의해서는 큰 영향을 받았다. 황사의 영향을 받은 4월에는 1.0㎛ 이상의 큰 입자의 수가 증가함에 따라 소산계수의 뚜렷한 증가를 가져왔다. 따라서 4월의 시정감소는 황사의 영향을 크게 받았음을 알 수 있었다. 소산계수와 시정의 일변화는 aerosol의 크기별 농도, 대기오염, 대기의 성질에 따라 달라졌다. Visibility was calculated using the Mie theory from measured aerosol size distribution. Aerosol was sampled and measured in the size range of 0.01∼10㎛ in March and April, 1988 in order to obtain extinction coefficient for visible light. The calculated light extinction coefficient and visibility showed that they were little affected by fine particles of diameter less than 0.1㎛, while they were greatly influenced by particles of diameter range of 0.1∼1.0㎛. In April, the extinction coefficient was increased remarkably by particles of diameter larger than 1.0㎛, when Hwangsa(aeolean yellow sand) appeared. Therefore, it was known that the visibility degradation in April was closely related to Hwangsa. The diurnal variations of extinction coefficient and visibility were dependent on the aerosol concentration, air pollution, and atmospherid properties.

춘계 황사의 입자수 분포와 대기광학적 성질

김필수,안무선 漢陽大學校 環境科學硏究所 1993 環境科學論文集 Vol.14 No.-

춘계황사의 입자크기분포와 광학적성질을 연구하였다. 1988년 4월의 0.01∼10㎛범위 대기부유입자의 크기분포 dN/d(logD)는 중국대륙에서 운송되어온 심한 황사의 영향으로 조대입자수가 뚜렷히 증가하였다. 한편, 입자 크기에 따른 체적분포 dV/d(logD)는 두개 극대를 가지며 특히 황사에 의한 직경 1㎛이상의 큰 입자의 체적증가는 특이한 현상이다. 소산계수분포 dσ??/d(logD)는 자연대기의 미세한 에어로솔에 의한 광소산과 1㎛이상 황사입자에 의한 광소산의 두성분을 가졌으며 후자의 기여가 오히려 더 크게 나타났다. 이러한 현상은 자연대기에서 거의 관측되지 않는다. 이 연구에서는 황사의 영향하에서의 파장에 따른 광소산계수 dσ??/dλ, 전소계수 σ?? 및 시정등도 논의하였다. Size distribution and optical properties of the yellow sand in spring have been studied. In April 1988, the airborne particle size distribution dN/d(logD) over the size range 0.01∼10㎛ indicates remarkable increase of coarse particles owing to the influence of heavy yellow sand which is transported from the Chinese Continent. On the other hand, the volume distribution dV/d(logD) as a function of particle diameter shows bimodal spectrum, specipically indicating an unusual increase of volume in large particles of yellow sand whose diameter larger than 1㎛. The distribution of extinction coefficient dσ??/d(logD) represents two-component contribution by natural aerosol of fine particles and yellow sand of diameter larger than 1㎛. The distribution of the later is rather higher than that of the former. This phenomenon is rarely observed in natural atmosphere. In this work, wavelength dependent extinction coefficient dσ??/dλ, total extinction coefficient σ?? and visibility R influenced by the yellow sand are also discussed.

精神科 外來患者들의 靜穩劑의 習慣性에 對한 槪念

方弼榮 大韓神經精神醫學會 1979 신경정신의학 Vol.18 No.3

The author studied the opinion on habituation potential of tranquilizer and their coping way with it of 180 psychiatric outpatients, who visited the psychiatric outpatient department of Kyungpook National University Hospital and Dongsan Presbyterian Hospital during the period from Jan. 1979 to Mar. 1979. This study was controlled with that of medical patients. The results were as follow: 1) In both of the psychiatric patients and medical patients, about two thirds of the patients believed that tranquilizer had habituation potential and there was no difference in this ratio by age, sex, and diagnostic distributions. More patients of higher education level were found to believe in habituation potential of tranquilizer than those of lower educational level. 2) Among the psychiatric patients, there were significantly less believers of habituation potential in patients who had been given their first prescription by psychiatrists rather than other physicians, and the longer the drug-taking period, the more the believers of the habituation potential. 3) Among the psychiatric patients who believed in the habituation potential of tranquilizer, about 83% considered habituation as similar to the reappearance of the symptoms of their primary illness when stopped the drug-taking and 14% considered habituation as similar to narcotic addiction. However, believers of habituation as being similar to narcotic addiction were more prevalent among medical patients than psychiatric patients. 4) About 60% of psychiatric patients who believed in the habituation potential of tranquilizer came to have such belief by their own judgement and the others through the information of other patients or mass media, and the latter were more prevalent among medical patients than psychiatric patients. 5) About one-third of the psychiatric patients who believed in the habituation potential replied that 6 months was the presumed period for habituation. About 7% supposed that less than one week as the presumed period for habituation formation. 6) Among the psychiatric who believed in the habituation potential of tranquilizer, less than half of them took their drugs as prescribed by the psychiatrists and the others did not follow the prescription in any way, and this tendency was more prominent among neurotics than psychotics.

트란스-1-(피라진일)-2-(4′-퀴놀린일)에틸렌의 형광 연구 : 온도, pH, 염 및 Heavy Atom 효과 Temperature, pH, Salt, and Heavy Atom Effect

봉필훈 Natural Science Research Institute JEONJU UNIVERSI 1987 전주대학교 자연과학연구소 학술논문집 Vol.2 No.2

Fluorescence of trans-1-(pyrazinyl)-2-(4'-quinolinyl) ethylene was investigated in various conditions. The fluorescence intensity increases as temperature decreases because of the restriction of changes in solute geometry by the slower rate at which the solvent cage is capable of rearranging, and because of the presence of the activated process, twisting in the first excited singlet state. Competing with fluorescence and temperature, the rotational barrier is estmated to be 0.97 Kcal/mal. The fluorescence intensity also increases as the polarity of solvents increases because of the changing of the energy levels of ^1(n.π^*) and ^1(π, π^*) states. The fluorescence intensity, however, decreases as going from neutral to acidic or basic solutions and are not affects by changing the concentration of salt. The heavy stom effect on. the fluorescence was also investigated.

2-D 모델을 이용한 軸磁界形 브러시레스 直流 電動機의 磁界解析

김필수,김용,백수현,윤석호 동국대학교 산업기술연구원 1997 산업기술논문집 Vol.9 No.-

본 연구에서는 2-D 자계 시뮬레이터를 이용하여 축 자계형 브러시레스 직류 전동기의 자계해석을 위한 방법을 제시하였다. 브러시레스 직류 전동기의 정확한 자계해석을 위해서는 3-D 해석이 필요로 된다. 그러나 이러한 해석은 시간과 비용이 크게 소요되므로 모터 설계를 위해서는 적당하지 못하다. 따라서 본 연구에서는 이러한 자계 해석을 위해서 전동기 영구자석의 평균 반지름에 대하여 원통 모양의 절단면을 이용하여 3-D 문제를 2-D 경계치 문제로 감소시켰다. 따라서 본 방법은 축 자계형 전동기의 크기 및 형태에 관계없이 합리적인 2-D 자계 결과를 얻을 수가 있다. This paper describes a method for field analysis inside the axial-field brushless DC motors using 2-D field simulator. Rigorous field analysis for brushless DC motors entail 3-D analysis. However, this analysis are not often appropriate for motor designs because of the time and cost involved. For field analysis in this study, the 3-D problem is reduced to a 2-D boundary value problem by introducing a cylindrical cutting plane at the mean radius of the magnets. Independent of sizes and shapes of axial-field motors, the exact 2-D field results can be obtained with reasonable predictability.

0.01∼10㎛범위 부유입자상 물질의 공기중 크기분포에 관한 연구

김필수 漢陽大學校 環境科學硏究所 1989 環境科學論文集 Vol.10 No.-

공기중에 부유하는 입자상물질을 1987년 10월 EAA 3030 장치로 측정하여 직경 0.01∼10㎛ 범위의 입자크기분포를 결정하였다. 입자수분포 dN/d(log D)는 미세입자에서 높은 값을 보였고 0.1㎛로부터 10㎛ 사이에서는 멱함수분포 dN/d(log D)=109.1??에 부합시킬 수 있었다. 한편 표면적분포는 dS/d(log D) 0.14㎛에서 극대를 보이는 한 봉우리 모양을 나타냈고 체적분포 dV/d(log D)는 1.16㎛를 안장점으로 0.18㎛와 4.36㎛에서 극대를 가지는 두 봉우리 분포의 특징을 보였다. 0.01∼10㎛범위 입자상물질의 단위체적의 공기속의 입자수, 표면적 및 체적은 각각 60070입자 /cm³, 1692㎛²/㎤ 및 114.9㎛³/cm³이었다. Particle size distribution of airborne particles in the size range of 0.01∼1.0㎛ is determined from the data of the EAA 3030 in October 1987. The number distribution dN/d(log D) reveals high values in fine particles. It can be fitted with a power function dN/d(log D)=??. The surface distribution dS/d(log D) shows a monomodal curve with its maximum at 0.14㎛. However, the volume distrbution dV/d(log D) is characterized by bimodality with two maxima at 0.18㎛ and 4.36㎛ showing a saddle point at 1.16㎛. The total number, surface and volume of aerosol particles in unit volume of air are respectively 60070 particles/cm³, 1692㎛²/cm³and 114.9㎛³/cm³ for the size range of 0.01∼10㎛ in diameter.