플라즈마 표지소자의 제작

이상윤,라병욱,박동수,황인헌,이덕동,신영남,박성배,이동욱,박용석,박형근,손상호,권태근,채경락,정경득 慶北大學校 自然科學大學 1986 自然科學論文集 Vol.4 No.-

An Ac-type Plasma Display Panel (PDP) operating with Ne-Ar(0.1%) Penning mixture gas is fabicated. The characterics of the panel with electrodes covered with thin and thick dielectric layers are studied. The brightness of the Neon-orange light emitted by the panel measured as function of applied voltage and frequency. As an application, a graphic display system equipped with PDP showing still and moving pictures is made.

이장재와 이장면적의 차이에 따른 인장결합강도의 변화

박종덕,이용우,온영석,이광원 大韓齒科保存學會 1998 Restorative Dentistry & Endodontics Vol.23 No.1

The purpose of this study was to extimate the changes of tensile bond strength according to the difference in lining materials and lining area. Seventy non-carious extracted human molars were used in the present study. and they were randomly assigned into 2 experimental groups according to the difference in lining materials. Each experimental group was subdivided into 3 groups according to the difference in lining area. Circular cavities were prepared on the dentin surface to a diameter of 1.5mm, 2.0mm, 2.5mm and the prepared cavities were filled with Fuji Ⅱ LC(Glass Ionomer Cement : GIC) or Dycal. Dentin specimens without circular cavity were used as control group. The primer and bonding agent of All-Bond 2 and composite resin(Z-100, 3M Dental Products, U. S. A.) were applied to the exposed dentin surface with or without lining. Tensile bond strengths for the experimental specimens were then measured. To examine the interface between dentin and liner & between liner and composite resin, two specimens from each group were fabricated and observed under the SEM. The results were as follows. 1. Tensile bond strength for the specimens lined with GIC was higher than that for specimens lined with Dycal. However, therer was no significant diffenence between two groups(p>0.05). 2. Tensile bond strength for the specimens lined with GIC in a diameter of 1.5mm(GIC-1.5mm lining group) was statistically higher than that for the GIC-2.0mm lining group(p<0.05). 3. Tensile bond strength for the specimens lined with Dycal in a diameter of 2.5mm(Dycal-2.5mm lining group)was statistically lower than that for Dycal-1.5mm lining group and Dycal-2.0mm lining group(p<0.05). 4. It was possible to observe the good adhesion of the resin composite to the GIC and the presence of a fissure between GIC and dentin all along the interface, Interfacial gaps of 7.2-72.2㎛ between GIC and dentin were observed. The interfacial gap between GIC and dentin at the cavity base was greater. However. the gap was gradually decreased toward the occlusal portion. 5. It was possible to observe the poor adhesion of the resin composite to the Dycal. The detachment of Dycal was occurred all along the composite resin-Dycal interface, and the gaps of 2.0-30.1㎛ were formed. In all the specimens. polymerization shrinkage of resin composite caused the detachment of Dycal from the body of Dycal. AT a Dycal-dentin interface, it was possible to observe the good adhesion, but poor adhesion with interfacial gap of 2.9-26.8㎛ were formed. In all the specimens. polymerization shrinkage of resin composite caused the detachment of Dycal from the body of Dycal. At a Dycal-dentin interface, it was possible to observe the good adhesion, but poor adhesion with interfacial gap of 2.9-26.8㎛ was observed partially.

窒素化合物의 水素化

朴龍泰,李彰熙,卞嶺錫 慶北大學校 物理化學硏究所 1984 硏究論文集 Vol.5 No.-

Catalytic hydrogenation of benzyl cyanide and phenyl cyanide with Pd/c and chloroform as proton source produce effecitively the primary amines, β-phenylethyl amine and benzyl amine respectively. Hydrogn chloride originated from hydrogenolysis of chloroform eliminates the primary amines reduced from nitriles on the catalytic (Pd/c) surface, preventing secondary amine formation. When methylene chloride is used as proton source in the catalytic (Pd/c) hydrogenation of nitriles, secondary amines are produced. With Raney-Ni, catalytic hydrogenation of some nitriles and nitrocompounds with chloroform as proton source do not give the expected reduction products, amines. Since the expected intermediate, nitrosobenzenc and N-phenylhydroxylamine was smoothly reduced to aniline in the catalytic reduction, they might be the intermediates in the catalytic (Ra-Ni) reduction of nitrobenzene. The expected product, water from Ra-Ni catalytic hydrogenation of nitrobenzene was identified by Gas Chromatography.

경추손상이 의심되는 환자에서 경추전방 연부조직 폭 측정의 의의

박주경,김성근,윤한덕,허탁,조석주,민용일 대한응급의학회 1995 대한응급의학회지 Vol.6 No.2

Prevertebral soft tissue swelling of cervical spine lateral radiogram is well known as an indirect evidence of occult cervical spine injury. But the clinical and statistical value of it has been of debate. We tried to analyse the value of cervical prevertebral soft tissue width as a screening test for cervical spine injury by comparison of two categorized study groups; the control group, traumatized patients without cervical spine injury and the injury and the injury group, traumatized patients with bony cervical injury. The injury group consisted of patients admitted between September 1993 and December 1994 with an ED diagnosis of bony cervical injury. The control group consisted of patients admitted between January 1994 and June 1994 who received cervical spine lateral radiograph because of suspicion of cervical spine injury or as a routine check. In both group, we sampled the patients who received cervical spine lateral rediograph within 24 hours after injury and excluded the patients less than 15 years old and more than 65 years old, In the control group, we confirmed the patients had no problem in cervical spine of follow-up. 101 control patients and 68 injury patients were identified. The injury group was further divided into two subgroups: those with injuries at C1-C3 to the upper injury subgroup and those with injuries at C4-C7 to the lower injury sub group. The prevertebral soft tissue widths of injury group were larger than of control group at C2(mean 6.1mm versus 4.5mm) and also at C6(mean 13.4mm versus 11.2mm). Especially upper injury subgroup had quite large value of C2 prevertebral soft tissue width(mean 14.1mm). Nevertheless, both in C2 and C6, there is no cutoff value with acceptable sensitivity and specificity as a screening test. But the 7mm at C2 and 14mm at C6 had high specificity(90%) and were thought to be a good radiologic indicators of further evaluation.

窒素化合物의 水素化

朴龍泰,李彰熙,卞嶺錫 慶北大學校 1983 論文集 Vol.35 No.-

Catalytic hydrogenation of benzyl cyanide and phenyl cyanide with Pd/c and chloroform as proton source produce effecitively the primary amines, β-phenylethyl amine and benzyl amine respectively. Hydrogn chloride originated from hydrogenolysis of chloroform eliminates the primary amines reduced from nitriles on the catalytic (Pd/c) surface, preventing secondary amine formation. When methylene chloride is used as proton source in the catalytic (Pd/c) hydrogenation of nitriles, secondary amines are produced. With Raney-Ni, catalytic hydrogenation of some nitriles and nitrocompounds with chloroform as proton source do not give the expected reduction products, amines. Since the expected intermediate, nitrosobenzenc and N-pheny-lhydroxylamine was smoothly reduced to aniline in the catalytic reduction, they might be the intermediates in the catalytic (Ra-Ni) reduction of nitrobenzene. The expected product, water from Ra-Ni catalylic hydrogenation of nitrobenzene was identified by Gas Chromatography.

아세클로페낙 연질캡슬(클란자 에스 연질캡슬)의 개발

용철순,이경희,최진석,박병주,정세현,김용일,박상만,배명수,김귀자,김영식,유창훈,강성룡,유봉규,이종달,최한곤 한국약제학회 2004 Journal of Pharmaceutical Investigation Vol.34 No.1

To develop and aceclofenac soft capsule, four preparations with various solubilizers were prepared and their dissolution test was carried out. Among four preparations tested, a preparation with ethanolamine was selected a formula of aceclofenac soft capsule (Clanza S^(™), since it showed the fastest dissolution rate. Bioequivalence of aceclofenac tablet, Airtal^(™)(Dae-Woong Pharmaceutical Co., Ltd.) and aceclofenac soft capsule, Clanza S^(™)(Korea United Pharmaceutical Co., Ltd.) was evaluated according to the guideline of KFDA. Fourteen normal male volunteers (age 20-25 years old) were divided into two groups and a randomized 2×2 cross-over study was employed. After oral administration of one tablet or capsule containing 100 ㎎ of aceclofenac, blood ws taken at predetermined time intervals and the concentration of aceclofenac in plasma wa determined with an HPLC method under UV detector. The pharmacokinetic parameters (C_(max), T_(max) and AUC_(t)) were calculated and ANOVA was utilized for the statistical analysis of parameters using logarithmically transformed AUC_(t), C_(max) and T_(max) between Airtal tablet and Clanza soft capsule were 2.89%, 0.18% and 43.0%, respectively. There were no sequence effects between two formulations in these parameters. The 90% confidence intervals using logarithmically transformed data were within the acceptance range of log(0.8) to log(1.250(e.g.log(0.81) - log(1.23) and log(0.89) - log(1.14)) for AUC_(t) and C_(max), respectively. Thus, the criteria of the KDFA guidelines for the equivalence was satisfied, indicating that Clanza S^(™) soft capsule is bioequivalent to Airtal^(™) tablet.

프레탈정 (실로스타졸 100mg)에 대한 실로스탄정 (한국유나이티드 제약)의 생물학적 동등성

용철순,이경희,최진석,박병주,정세현,김용일,박상만,유봉규,이종달,최한곤 한국병원약사회 2003 병원약사회지 Vol.20 No.2

Bioequivalence of one cilostazol tablets, the Pletaal^(R)(Korea Otsuka Pharmaceutical Co., Ltd.) and Cilostan^(R)(Korea united Pharmaceutical Co., Ltd.), was evaluated according to the guideline of KFDA. Sixteen normal male volunteers(age 20~30 years old)were divided into two groups and a randomized 2×2 cross-over study was employed. After one tablet containing 100㎎ of cilostazol were orally administered, blood was taken at predetermined time intervals and the concentration of cilostazol in plasma was determined with an HPLC method using UV detector. The pharmacokinetic parameters(C_(max), T_(max) and AUC_(t)) were calculated and ANOVA was utilized for the statistical analysis of parameter. The results showed that the differences in C_(max), T_(max) and AUC_(t) between one tablet were 16.08%, 18.88% and 17.57%, respectively. The powers (1-β) for C_(max), T_(max) and AUC_(t) were 85.03%, 83.92% and 80.12%, respectively. Detectable differences(Δ) and confidence intervals were all less than 20%, and confidence interval of all the parameters were also less than 20% at the significance level(α) of 0.05. All of these parameters met the criteria of KFDA for bioequivalence, indicating that Cilostan^(R) tablet is bioequivalent to Pletaal^(R) tablet.

"국민윤리" 敎科內容의 模型設定에 關한 一硏究

金渭錫,裵龍光,姜永晧,朴仁熙 慶北大學校 文理科大學 1977 文理學叢 Vol.4 No.-

Based upon the point of view that man would be able to get self-perfection only in community and that, on the other hand, just the man is the origin of vitality of community, writers believe that value education program is needed an useful in the university curriculum. And they found that in substantial character the value education program means the instruction which is not only for a student to adapt himself to the system of the community, but also criticize the system of the community in order to realize the best social conditions. Then, it is important to establish the substantial object of "National Ethics" and to constitute the contents of curriculum of it, which is suitable to accomplish the object of "National Ethics." According to the view mentioned above in this paper, writers attempted to establish a model of contents of "National Ethies" as a university curriculum. Writers think that the substantial object of "National Ethics" must be established with reference to the most important problems for the nation to be solved. Writers believe, therefore, that such problems as ① Primitive Unification, ② Industrialization ③ National Welfare ④ Abundance upon which discoursed A.F.K Organski in his "This Stage of Political Development," or as ① State-Building ② Nation-Building ③ Participation ④ Distribution of which stated G. A. Almond and G. B. Powell in their "Comparative Politics: Developmental Approach," are the most important for us to solve: because the history of modernization of Western Europe would suggest an End-State model for the underdeveloped nations. The following conclusions were derived from the present study: First, a statue of a human being as the substantial object of "National Ethics" is one who eager to solve and accomplish such problems mentioned above. Second, according to the suggestions of the history of modernization of Western Europe, the contents of curriculum of "National Ethics", which would be able to accomplish the substantial object of the "National Ethics," must be constituted with the contents which cultivate the patriotism. And from the history of modernization of Western Europe writers find out the facts that such modern spirits as positivism, rationalism and so forth rested on the basis of their traditional thought. And so, Koreanic modern spirits must be derived from her traditional thought. Then writers conclude that the contents of "National Ethics" must be constituted with "Korean thought" and the thought of "Chyung-Hyo" which is one of the Korean traditional morals. Third, writers concluded that it is reasonable to exclude the chapter of "The Philosophy of Political Science" and "Criticism of Communism" from the contents of curriculum of "National Ethics," which is contained in present text of "National Ethics," and to treat each one as a independent subject if it is possible. Fourth, a system of "Korean Thought" which is stated in this paper is an example for further study.

水稻의 適正 用水量 算定에 關한 硏究 : 葉水面 蒸發量을 中心으로 For Amount of Evapotranspiration

黃龍鎭,宋錫銀,鄭鳳守,朴魯奭,李裕根,李永日,黃光性 진주산업대학교 1976 論文集 Vol.14 No.-

1. 試驗기간의 氣象現況은 Table 1과 같다. 2. 벼의 엽면증발량은 活着後 점차 增加하여 第8기에 Peak로 되며 이때의 1日 엽면 증발량은 5.16mm/day로 되었다가 점차 減少現象을 보인다. 3. 엽면증발량은 第8期에 全 葉面증발량의 17.5%에 達한다. 4 벼의 증산비는 282이였다. 5. 株間수면증발량은 Table 3과 같으며 葉面증발량과는 負(一)의 相關關係가 있음을 보였다. 6. 증발계증발량과 엽수면증발량과의 比는 1.43이였다. 7. 증발계증발량과 葉面증발량과의 비는 0.89이였다. 8. Blaney- Criddle method에 依한 k値는 Table 5와 같다. 9. 증산强度는 총계 1021로, 증발산强度는 총계 1141.8로 나타났다. The resuts of the study on consumption use of irrigated water in pabdy field during the growing stage of gaddy rice are summarized as follow. 1. Amount of transpiration of paddy rice increases gradually after trasplantation and reaches peak on 8th growing period and amount of traspiration reached on 5.16mm/day, then it decreases gradual1y after that. 2. Trnspirstion reached l7. 5% of amount of transpiration at 8th growing period. 3. Transdiration ratio of paddy rice approximate1y 262. 4. As we know from Fig. 2 correlation between the amouut of everporation from water surface in paddy field and amount of trans piration shows high negative. 5. Ratio of between evaportion and evapotranspiration is 1.43. 6. Ratio of between evaportion and transpiration is 0.89. 7. The k value of Blaney-Cliddle methed shows Tab1e 6. 8. Transpion and evaoptranspiration intennsities is each other 1021 and 1141.8.本 試驗은 엽수면증발량 株間수면증발량을 實測하였으며 이 試驗에 여러 가지 未備한 点이 있는 것으로 思料되나 以上의 試驗結果를 要約하면 다음과 같다.

韓國人 身長의 最大發育年齡으로 본 發育促進現狀의 推移에 관한 比較硏究

田溶海,朴淳永,尹錫昌 慶熙大學校 1988 論文集 Vol.17 No.-

On the basis of the study intended to research by cross-sectional keeped pace with semilongitudinal study the growth accelerating phenomena that MGA(Maximum Growth Age) in teenager's body height. The duration of study is from September 1st. 1987 to May 25th 1988 and the data are analysed through computer. The body height and MGA of Koreans who had been for during the period from 1898 to 1968 proved transition of the growth accelerating phenomena by research data reported between 1913 and 1985. The results are as follows: 1. Maximum Growth Age The MGA's in body height of male are respectively the age 15.024 in 1913, 14.28 in 1940, 13.65 in 1959, 13.86 in 1967, 12.52 in 1983, while those of female are the age of 12.0 in 1940, 12.36in 1959, 10.45 in 1969, 11.15 in 1958: these data show that the MGA of the Korean has been getting younger. 2. The correlation of the MGA's in body height are as below; Male: r=-0.4598 Female: r=-0.2526 3. The equation of linear regression of MGA's in body height are as blow; Male: Y(MGA)=-0.0352X(the year)+15.7282 Female: Y(MGA)=-0.0273X(the year)+12.5956 4. The MGA's in body height are shown in Table 5. 5. From the transition of the growth accelerating phenomena. we can compute the fact that the MGA's has been getting younger by 0.3 year per 10 years. 6. The future growth accelerating phenomena in body height, the MGA's of male are respectively the age 12.56 in 1990, 12.38 in 1995, 12.21 in 2000, while those of female are the age of 10.14 in 1990, 10.0 in 1995. 0.85 in 2000: these duta show that the MGA of female are more younger than that of male.