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이오석,박병수 安東大學 1985 安東大學 論文集 Vol.7 No.1
One meta and six para Phenacyl Arenesulfonates have been synthesized. All compounds have teen identified by NMR, Mass Spectroscopy and Elemental Analysis.
이오석 安東大學 1984 安東大學 論文集 Vol.6 No.1
One meta and six para substituted phenacyl tosylates have been synthesized. All Compounds have been identified by NMR, Mass Spectroscopy and Elemental Analysis.
2, 4-Dinitrofluorobenzene과 置換 Aniline類와의 反應에 關한 反應速度論的 硏究
呂壽東,李五錫,朴聖植 慶北大學校 1982 論文集 Vol.33 No.-
The rates and the activation parameters for the reactions of 2,4-Dinitrofluorobenzene with substituted Anilines in ethanol and dimethylformamide were studied. The effects of substituent and solvent on the reactivity of substituted anilines were discussed. The rate of the reaction was increased with the electron-donating power of substituent. The isokinetic relationship was obsevred between ΔH^≠ and ΔS^≠. The excellent linear relationship was found between logk and pka of substituted anilines. The reaction rates in ethlalcohol are faster than that in dimethylformamide, which was explained in terms of the specific solvation. From the results, bond-formation is rate-determining step of this reactions in each solvents.
경과 관찰 중에 폐감염이 동반된 선천성 낭성 선종양 기형 1예
김정아,이석현,오동훈,김종연,허진원,이성순 인제대학교 2006 仁濟醫學 Vol.27 No.-
We reported a case of congenital cystic adenomatoid malformation (CCAM), diagnosed two years ago, has been infected during medical observation. She underwent VATS guided right lower lobectomy because of little response to the medical treatment. The prognosis turned out to be excellent and now she is under regular medical observation. Management of asymptomatic CCAM still has a likelihood of controversy but the early surgical resection is recommended on a basis of a variety of reference and literature to verify the diagnosis and lessen the risk of infection or malignant degeneration. Moreover the early surgical intervention has a good prognosis settling complications. Recently VATS lobectomy is considered as an alternative strategy for CCAM, and the early surgical resection may be an ideal approach for asymptomatic CCAM.
Phenacyl Arensulfonate와 치환 Pyridine類의 반응에 관한 반응속도론적 연구
呂壽東,李五錫 慶北大學校 1983 論文集 Vol.35 No.-
The rates and activation parameters for the reactions of phenacyl tosylate with pyridines in acetonitrile were measured. The effects of substituents were increased with electron-donating power of pyridines and Brψnsted linear relationship was shown. The isoenthalpic relationship was observed and reactivity is mainly ruled by entropy change.
최충식,이오석,권기석 7개 국립대학교 환경연구 논문집 공동발행 위원회 2003 공업기술연구 Vol.3 No.-
An halophilic bacterium was isolated from food-waste. The isolated strain was Gram-negative, aerobic bacterium. The range of temperature for growth of the isolate were 30-40℃. NaCl concentration for growth of it was 5-15%. The isolate was catalase and oxidase positive and sensitive to bacterium. It showed starch hydrolyzing and acid forming characteristics. The morphological, physiological and biochemical characteristics of the isolate resembled those of the Halococcus sp., therefore it was identified as Haloarcula sp. CH-667.
김무식,최충식,이오석,전장표 대구보건대학 2002 대구보건대학 論文集 Vol.22 No.-
We investigated the basic operation conditions and biological properties for the dyeing wastewater treatment by sequencing batch reactor(SBR) process. The results are summarized as bellow. The experimental results were constructed with design factor. a. COD removal efficiency was appeared to be over 53% when carbohydrate not added to dyeing wastewater. According to carbohydrate addition weight COD removal efficiency was improved to 92%. b. TKN removal efficiency was appeared to be over 43% when carbohydrate not added to dyeing wastewater. When carbohydrate added to dyeing waste water TKN removal efficiency was achieved 87%. In a conclusion, therefore, under all the conditions provided in this study Sequencing Batch Reactor process appeared to be effective, economical and useful process for dyeing wastewater treatment.
국가 대표급과 제주도 고교 대표급 수영선수들의 그랩 스타트의 운동학적 분석
김철원,김승곤,오만원,임상용,김성찬,이창준,남사웅,이세형,류재청,신석종,김세민 濟州大學敎 體育科學硏究所 1998 체육과학연구 Vol.4 No.-
The purpose of the study was to undertaken to analysis the Grab starting technique between national representive team(3) and Cheju's representive team(3) with 3D cinematography. The conclusions obtained were as follows: Cheju's showed more elapsed time than national representive team on starting block. and more vertical than horizontal direction of COG position, more concentrated vertical velocity & acceleration than forward direction. Therefore It is necessory for cheju's to train balanced trust force in horizontal and vertical direction in grab starting technique.
Phenacylbromide와 3次아민의 反應에 對한 溶媒效果
呂壽東,趙舜煥,李五錫 慶北大學校 1982 論文集 Vol.33 No.-
The kinetics of the quarterization reaction of phenacylbromide with tertiary amines including pyridine 3.5-lutidine and triethylamine in the media of acetonitrile, dimethylformamide, methanol, acetone and tetratydrofuran have been measured at 25℃, 35℃ and 45℃. The results of experiments show that the rate of quarternization are greatly affected by polarity of solvent except methanol. Activation parameters obtained in this study have the values we can expect for usually S_N2 mechanism. A linear relationship has been obtained between pK_a and logk, though such relationship is not clear in triethylamine. The good linear relationship has also been obtained between activation entropy and enthalpy. The linear relationship between logk and solubility parameters has turned out to be better than that dielectric constants.
정재홍,김기준,이규희,이석건,오만진 충남대학교 농업과학연구소 1998 농업과학연구 Vol.25 No.1
This studies was carried out to investigate the processing possibility of pheasant meat extracts treated with proteases. The crude protein, aminonitrogen, degree of hydrolysis, yield and amino acid composition of pheasant meat extracts when it was treated with proteases at various temperature and reaction time were analyzed. The crude protein contents of pheasant meat extracts processed in 130℃ were more than when it was done in 100℃, but the contents of aminonitrogen were not quite different between two processing temperature. The content of crude protein and aminonitrogen when pheasant meat was hydrolyzed with protease NP and prozyme A. The yields of pheasant meat extracts, when pheasant meat were treated at 100℃ and 130℃, were from 2.24 to 7.10% and from 5.51 to 10.45%, respectively. And the yield of extraction depended on extraction temperature, kinds of enzyme, amount of enzyme, extraction time. The content of aminonitrogen in pheasant meat extracts treated with enzyme was much higher than any other treatments. And it depended on amount of enzyme, extraction time and temperature. The amount of the amino acids in pheasant meat extracts treated by protease NP were eminently higher than by heat at 100℃ or 130℃.