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중성 운반체 선택성 막전극법에 의한 우라늄 금속의 연속정량
정오진,정경훈,김삼혁 조선대학교 환경공해연구소 1998 環境公害硏究 Vol.14 No.-
The equipments with which selective ions were able to determinated by ion selective membrane electrode method have been designed with the simole electronic circuits. Having made the selective neutral carrier membrance electrodes with PVC matrix. the response potentials of ??O^(2+)_(2)??were measured with the selective membrance electrodes and all of equipments and treatment of data amalysis were operated, and obtained by using the personal computer programs. The neutral carrier membrane electrodes were made by mixing the neutral carriers (macrocyclic compounds and Cryptand), p1asticizer(A1iquart 336, TOPO, and TBP) and matrix(PVC). These neutral carrier membrane electrodes showed a linear potential response to the activities of UO^(2+)_(2)(10-2-10-6M). The neutral carrier selective membrane electrodes for UO^(2+)_(2) and equipment for analysis of selective ions mentioned above were stable and reproducible for a long time use, and the selective coefficients for ??O^(2+)_(2)??were increased in proportion to the formation constants of metal complexes with neutral carrier ligands.
중성 운반체 선택성 막전극법에 의한 우라늄 금속의 연속정량
정오진,정경훈,김삼혁 조선대학교 환경연구소 1998 環境硏究 Vol.14 No.1
The equipments with which selective ions were able to determinated by ion selective membrane electrode method have been designed with the simole electronic circuits. Having made the selective neutral carrier membrance electrodes with PVC matrix, the response potentials of 〔UO^2+_2〕 were measured with the selective membrance electrode and all of equipments and treatment of data amalysis were operated, and obtained by using the personal computer programs. The neutral carrier membrane electrodes were made by mixing the neutral carriers (macrocyclic compounds and Cryptand), plasticizer(Aliquart 336, TOPO, and TBP) and matrix(PVC). These neutral carrier membrane electrodes showed a linear potential response to the activities of UO^2+_2)(10-2-10-6M). The neutral carrier selective membrane electrodes for UO^2+_2 and equipment for analysis of selective ions mentioned above were stable and reproducible for a long time use, and the selective coefficients for 〔UO^2+_2〕 were increased in proportion to the formation constants of metal complexes with neutral carrier ligands.
정해선,김진숙,이경화 가톨릭대학교 생활과학연구소 2001 생활과학연구논집 Vol.21 No.1
The purpose of this study is to activate the internet cosmetic shopping mall by evaluating customer's satisfaction. The results of the customers' satisfaction in internet cosmetic shopping mall shows that the average of the follows are high: "ordering in convenient time is possible "received the highest point and "comparison with the other brand's goods is easy", "time can be saved" and "price is low" are received fairy high point. But "buying colored cosmetic is easy", "refund is easy" showed low satisfaction. These shows that customers have negative feeling in choosing colored cosmetic and refunding when they use cosmetic shopping mall. The analysis of the total points of the shopping mall reveals that compound shopping mall show many superiorities in contents, and specialized cosmetic shopping malls show superiorities in satisfaction but compound shopping mall is more convenient to the customers than specialized cosmetic shopping mall.
混合溶媒內에서 p-Nitrobenzyl Chloroformate의 아실화 反應에 관한 硏究
김정성,김성주,경진범 대구대학교 기초과학연구소 1997 基礎科學硏究 Vol.14 No.1
The Kinetics of the solvolysis of p-nitrobenzyl chloroformate in hydroxylic alcohol solvents and the methanolysis of this substrate in acetone have been studied by titrimetric method at several temperatures and over a wide range of methanol concentration. The values of the activation parameter were determined from rate constants. The products of this substrate were analyzed by GC in aqueous ethanol. The mechanisms of these reactions were also estimated from the extended Grunwald-Winstein equation and the isotopic effects in methanol. From these results, it could be estimated that the solvolysis of p-nitrobenzyl chloroformate have bimolecular addition-elimination mechanism. And the reaction of this substrate with methanol in acetone is mixed second- and third- order reactions for over-all reaction. The results are consistent with a bimolecular reaction, and are explained by tetrahedral intermediate mechanism.
Escherichia coli 패혈증 환자에 합병된 대칭적 하지 말단 괴사증 1예
남해성,유진홍,권순석,민준기,조현선,박민경,심병주,남유정,이지인,김진수,길욱현,조근종,신완식 대한감염학회 2005 감염과 화학요법 Vol.37 No.6
We have encountered a rare case of symmetrical peripheral gangrene complicating Escherichia coli sepsis in a 47-years-old male. He was successfully treated with antibiotics, anticoagulants, and vasodilator. To our knowledge, this is the first report on symmetrical peripheral gangrene complicating E. coli sepsis in Korea.
장현철,김경식,방준현,최천진,엄정식,김응준,이루지 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.2
The purpose of this study was to examine the perception and preference of skiers in a bid to provide ski resorts with useful information about successful positioning strategy. The subjects in this study were 9,722 skiers who purchased season tickets from N web site that sold ski season tickets. Their online purchasing route and page view were analyzed to find out what factors affected their purchase of ski season tickets. The findings of this study were as follows: First, 78 percent of the people investigated were make, and 22 percent were female. By age, the largest group was in their 20s(5,344 skiers), followed by those in their 30s(3,434), those in their 40s(631) and teenagers(229). Second, their page view rate with Yangji recorded highest with 24%, followed by Sungwoo Resort with 23% and Chonmasan with 13 percent. Third, by geographic area, the skiers from southern Gyeonggi province bought the largest number of tickets for the 2002/2003 season, followed by Gangweon province residents and northem Gyeonggi province dwellers. In the case of the 2003/2004 season, those from Gangweon provinece pruchased the most tickets, followed by southern Gyeonggi province dwellers and north Gyeonggi province residents.
Laparoscopic ovarian solid tumor removal method
( Kyong Jin Kim ),( Kyoung A Kim ),( Sang Ki Hong ),( Su Kyung Baik ),( Jung Bum Moon ),( Tae Won Jung ),( Ji Hyun Kim ) 대한산부인과학회 2019 대한산부인과학회 학술대회 Vol.105 No.-
Objective: Demonstrate a new instrument, technique or procedure Target: Beginning practicioners Methods: Ovarian cyst can be removed easily after cyst aspiration. In case of solid tumor we can use electronic mocellater. If it is not malignant tumor. The thecoma is a benign ovarian tumor contained lipoma like component. It is very difficult to remove because lipoma became fragments and scattered to peritoneal cavity Generaly solid tumor peeled off and removed through the cannula. We use an endoscopic retrieval bag to inset without pivot removal. After spreading the bag in peritoneal cavity, Rotate the handle sothat the specimen put into the bag. We can remove specimen easily after tomor excision. The vinyl bag pulled through cannula site and expeled the specimen. Results: Ovarian tumor can be removed easily without pivot removal method. Conclusion: After excising ovarian tumor, we use a retrieval bag to remove specimen.