생명존중과 자살예방

양두석 한국보험법학회 2018 한국보험법학회 학술발표회 논문집 Vol.2018 No.2

고정층 흡착 반응기에서 단일성분의 격변곡선에 관한 연구

梁斗錫 成均館大學校 大學院 1987 首善論集 Vol.12 No.1

제주도 내 하수관거정비 BTL사업의 GDP 디플레이터 방식과 지수조정률 방식과의 비교 분석

양두석,이동욱,Yang, Du-Suck,Lee, Dong Wook 대한토목학회 2015 대한토목학회논문집 Vol.35 No.1

본 연구는 건설투자 GDP (Gross Domestic Product) 디플레이터 방식의 물가조정이 이루어진 제주특별자치도 내 하수관거정비 BTL(Build-Transfer-Lease)사업에 대하여 물가변동률 적용에 문제점을 파악하기 위하여 실시되었다. 분석 결과, GDP 디플레이터 방식의 기준지수는 고정값을 사용하며 매분기별 물가변동률이 반영되기 때문에 지수조정률 방식보다 물가변동률이 높게 나타나는 것으로 조사되었다. 그러나 GDP 디플레이터 지수가 총사업비에 일괄적으로 적용되기 때문에 현실적인 물가를 반영하지 못함으로써 정확도가 떨어지는 단점이 있는 것으로 조사되었다. 또한 GDP 디플레이터 방식의 기준지수가 고정값을 사용하기 때문에 기준이 되는 시점(정부고시일)이 물가조정에 매우 크게 영향을 미치는 것으로 조사되었다. This study conducted case studies in order to suggest the improvement of GDP (Gross Domestic Product) deflator method which is adopted on calculating fluctuation rate on BTL (Build-Transfer-Lease) sewer rehabilitation projects in Jeju. As a result, because GDP deflator method calculates fluctuation rate by each quarterly, the fluctuation rate of GDP deflator method is higher than it of index adjustment rate method. And GDP deflator method cannot reflect real price because of applying fixed index in whole construction cost for calculating fluctuation rate. Especially, the notification day - the base point influences fluctuation rate and fluctuation amount strongly in GDP deflator method.

자궁체부에 발생한 혼합 중배엽성 육종 1 예

양두석(DS Yang),강상목(SM Kang),박인배(IB Park),김동규(DK Kim),박승보(SB Park) 대한산부인과학회 1986 Obstetrics & Gynecology Science Vol.29 No.11

저자들은 최근 본원 산부인과에서 자궁체부에 발생한 혼합 중배엽성 육종 1례를 경험하였으며, 전자궁 적출술과 양측 난소 난관 절제술을 시행했으나 추후관찰이 되었으면 하는 아쉬움으로 남는다 originating from M llerian potential and mesenchymal tissue It consists of epithelial & stromal elements According to stromal elements, it is divided to homologous type (carcinosarcoma)and heterologous type (mixed mesenchymal tumor) Diagnosis is difficult & prompt treatment must be required Prognosis is very poor due to frequent metastasis and recurrence We experienced a case of mixed mesodermal tumor of the uterine corpus and report with a brief reviews of literature

통학로 안전지수 개발 및 초등학교 통학로 조사 분석 연구

허억,양두석,강희정,신유철,김영욱 초록우산 어린이재단(구 한국복지재단) 2020 아동복지연구소 보고서 Vol.2020 No.8

回分式 反應器에서 活性炭에 依한 液相吸着의 內部粒子擴散係數에 관한 硏究

金昺圭,梁斗錫,李鏞喆 成均館大學校 科學技術硏究所 1987 論文集 Vol.38 No.2

Liquid-phase adsorption of organics (aniline, phenol, p-chlorophenol, and m-cresol) on activated carbon was carried out in a batch system. Diagrams showing concentration change in an agitated tank adsorber are presented to estimate intraparticle diffusivities under nonlinear isotherm, where either pore or surface diffusion is assumed to be controlling. The experimental data were analyzed by two proposed model, the pore diffusion model and the surface diffusion model with an effective diffusion coefficient as a model parameter. For mass transport in the- liquid-phase adsorption process, it could be concluded chat the intraparticle diffusion was the rate-controlling step, and it was shown that surface diffusion contributed more to intraparticle diffusion than the pore diffusion in the adsorption system studied. The time-concentration curves predicted by the surface diffusion model and the pore diffusion model coincide well With experimental data.

活性炭에 依한 有機物 水溶液의 多性分 吸着 平衡

金昺圭,梁斗錫 成均館大學校 科學技術硏究所 1987 論文集 Vol.38 No.2

Multicomponent adsorption equilibria of organics on activated carbon were predicted by the ideal adsorbed solution (IAS) theory and the results were compared with those calculated from a different Freundlich-type isotherm. Mutual interactions between adsorbable species based on the competitive adsorption on heterogeneous surface of activated carbon. To ascertain the surface heterogeniety, the distribution of adsorption potential was calculated from the exponent parameter of single component Freundlich isotherms by assuming an exponential distribution function. The affinity for activated carbon was in the order : p-chlorophenol>m-cresol>phenol>aniline. The average percent deviation of the IAS theory is 5∼11% while that of Sheindorf's isotherm is 8∼20%. Although some deviations between measured and calculated results are observed, the IAS theory permits rapid and relatively accurate predictions of adsorption equilibria for two components. The results show that IAS theory is suitable for the extended application to multicomponent adsorption systems.

통학로 안전지수 개발 및 초등학교 통학로 조사 분석 연구

허억,양두석,강희정,신유철,김영욱 초록우산 어린이재단(구 한국복지재단) 2020 어린이재단 발간물 Vol.2020 No.8

Cement 粉碎에 있어서 Ethylamine類 粉碎助劑가 미치는 影響

金昺圭,梁斗錫,金石柱 成均館大學校 1981 論文集 Vol.30 No.-

所要 粉碎動力費를 節減하기 위하여 有機溶媒를 粉碎助劑로 擇하고 液相接觸으로 그 粉碎效果를 向上시키는 硏究는 여러 학자들에 의해 進行되어 왔다. 筆者는 이에 立脚하여 우리나라에서 動力費節減이 要求되는 Cement 製造를 대상으로 하여 Ethylamine 類를 粉碎助劑로 택하고 더욱 接觸確率을 증가시키기 위하여 氣相으로 接觸시켜 Cement 粉碎效果를 硏究하였다. 또한 그 原因으로 추정되는 吸着現象을 아울러 測定하여 粉碎效果와의 관계를 檢討하였더니 粉碎가 시작된 후 0∼6 時間內에서는 각종 첨가물이 거의 없는 상태, 즉 Clinker 單一系의 粉碎現象과 비슷한 粉碎傾向을 보여 주었고, 6∼8時間 사이에서 급격한 吸着能의 증가현상을 보여주었다. 이 때부터 粉碎率이 첨가물질에 의한 特有의 증가현상을 보여주고 이Td서 吸着能이 粉碎率과 깊은 관계가 있음을 알았고, 吸着能이 큰 물질일수록 粉碎效果가 더욱 좋은 結果를 보여주어서 粉碎效果는 吸着能과 吸着量에 比例됨을 認知하였다. 더욱 構造物材料로서의 本質인 物性을 測定하여 이에 따르는 使用許容範圍를 提示하였으며 結果的으로 1. 이들 粉碎助劑의 添加量이 증가하면 粉碎效果도 증가한다. 2. 粉碎效果는 Ethylamine 類가 Ethanol보다 떨어졌고, 沸點이 높은 tri-Ethylamine이 di-Ethylamine 보다 좋았으며, Ethanol>tri-Ethylamine>di-Ethylamine順으로 됨을 알았다. 3. Ethyamine 類의 Cement 粒子에 對한 吸着現象은 Ereundilich 吸着等溫式과 恰似했으며, 어느 범위내에서는 粉碎助劑의 吸着量이 증가함에 따라 粉碎效果가 좋아진다. 4. 粉碎效果가 좋을수록 Cement의 物性을 다소 감소시키고 있으나 構造物의 原資材로 사용하는 경우 그 使用分野에 따라 큰 지장이 없이 사용할 수 있는 것으로 看做된다. Most expenses of production in cement industry are electric power, therefore, many scientists had researched through various ways for saving power cost. Especially, they are an urgent problem, for Korea electric power costs so expensively. As one of the means of saving power, by crushing aid of organics (i.e. primary, secondary alcohol series, fat, or resins), it was attempted to prevent the growth of secondary particles on liquid contacting system. But it was not sufficient on heterogeneous dispersion system. In this experiment, the increasing of crushing effect was investigated in gaseous contacting system and 100℃ of not influencing upon cement products. Then, organic crushing aid were used di-Ethylamine (bp 55.4℃) and tri-Ethylamine (bp 89.7℃) in range of 0.1-0.5wt. % concentration. Thus, saving power and properties of structures depend on factory data. On the standard of compared data, a continuous method in dry crushing was adopted to a practical operation condition. Therefore, it must be analysed by batch method in a possible application because it is better than continuous method. The computation on power should be done by crushing ratio, directly, and it become clear tendency of specific surface mean diameter of particles to be decreased according to hour limit. Also, the increment of crushing effect had been referred to the adsorption phenomena on cement particles by the vapor of organic substance with crushing aid in the experiment of crushing. Then, the adsorption phenomena has researched by Gas-chromatograpy method, because of it's convenience and accuracy. Organic substance had been used as the adsorbate (i.e. di-Ethylamine and tri-Ethylamine). Through the experimental investigation, the following results were obtained: 1. Power saving of the cement crushing system added organic substance is 2.6% better than that of a simple system of clinker crushing. 2. In crushing, the order of effectiveness are Ethanol tri-Ethylamine and di-Ethylamine. i) Ethanol is 20.8%(in range of 0.4-0.5wt%) ii) di-Ethylamine is 13.7% (in range of 0.4-0.5wt%) iii) tri-Ethylamine is 15.4% (in range of 0.4-0.5wt%) 3. The compressible strength of the cement organic substance the order of decrease are Ethanol, tri-Ethylamine, di-Ethylamine. ⅰ) Ethanol is 5-6% (decrease) ⅱ) di-Ethylamine is 4.1% (decrease) iii) tri-Ethylamine is 4.3% (decrease) 4. Absorbed amount of the organic solvents is an important factor of cement crushing system; the grinding rates are increased when the amount of grinding aid are increased. 5. The adsorptivity increased in the order of Ethanol, tri-Ethylamine, di-Ethylamine, di-Ethylamine. 6. Adsorption phenomena of Ethylamines on cement have been adsorbed to show a tendency similar to the Freundlich's adsorption isotherm equation. 7. After 6 hours of the crushing time when the increase in the crushing efflciency has taken place, the amount of adsorption has rapidly increased, while the amount of adsorption has shown almost negligible increase. 8. Crushing efflciency has been increased with the increasing amount of Ethylamines absorbed on cement i.e, the higher the absorptivity is, the better the crushing efflciency is.

난소낭성기형종에서 발생한 편평상피세포암 2 례

윤경식(KS Youn),양두석(DS Yang),유빈서(BS Yu),박승보(SB Park) 대한산부인과학회 1987 Obstetrics & Gynecology Science Vol.30 No.8

저자는 양성낭성기형종에서 병발된 편평상피세포암을 2례 경험하였기에 문헌고찰과 함께 보고하는 바이다. 2 Cases of Squamous Cell Carcinoma Arising in Cystic Teratoma of the Ovary Cystic teratoma of the ovary are almost always benign tumors, but it can be developed into malignancy rarely. We have recently experienced 2 cases of squamous cell carcinoma arising in cystic teratoma of the ovary. The one was 68 years old woman, the tumor was measured 15*11*11cm. The other was 57 years old woman, the tumor was measured 22*15*13.5cm. Both involved right ovary and the cut surface of the tumors were partly cystic and partly solid. Microscopically, all the tumors were found to be partly differenciated squamous cell carcinoma.