Benzoate, m-Toluate, Phenol의 Pseudomonas putida에 의한 생분해

김장규,김석형,김태환,이대광,김남기 成均館大學校 科學技術硏究所 1993 論文集 Vol.44 No.1

It this study, basic data were obtained for the treatment of industrial waste water which includes aromatic compounds. Substrate concentrations used were 100ppm, 500ppm, and 1,000pprn and initial pH's were pH6, pH7, and pH8 in order to obtain the optimum conditions for treating benzoate, m-toluate, and phenol by Pseudomonas putida(KCTC 1644). Durations were 20hrs for 100ppm, 40hrs for 500ppm, and 60hrs for 1,000ppm before the static growth of Pseudomonas putida. 100% of 100ppm benzoate(0.31g cell/1) was biodegraded at pH6, pH7, and pH8 before 20hrs, 52.8% of 500ppm at pH8 in 40hrs, and 27.9% of 1,000ppm at pH8 in 60hrs. The best initial pH was pH8 for the biodegradation and the growth of Pseudomonas putida in benzoate medium. For m-toluate, the best initial pH was also pH8. At this pH, 40.6% of 10Dppm(0.31 cell/1), 21.9% of 500ppm, and 14.1% of 1,000ppm m-toluate were biodegraded respectively in limited time. But for phenol, the best initial pH was pH7. At this point, 9.8% of 100ppm(0.218 cell/1), 7.1% of 500ppm, and 4.7% of 1,000ppm phenol were biodegraded respectively. Therefore, the best carbon source in this experiment was benzoate. Pseudomonas putida was also able to biodegrade m-cresol, p-hydroxybenzoic acid, and benzaldehyde.

Original Articles : Clinical significance of occult hepatitis B virus infection in chronic hepatitis C patients

( Jae Young Jang ),( Soung Won Jeong ),( Sung Ran Cheon1 ),( Sae Hwan Lee1 ),( Sang Gyune Kim ),( Young Koog Cheon ),( Young Seok Kim1 ),( Young Deok Cho1 ),( Hong Soo Kim ),( So Young Jin ),( Yun Soo 대한간학회 2011 Clinical and Molecular Hepatology(대한간학회지) Vol.17 No.3

Background/Aims: We investigated the frequency of occult hepatitis B virus (HBV) infection in anti-hepatitis C virus (HCV)-positive individuals and the effects of occult HBV infection on the severity of liver disease. Methods: Seventy-one hepatitis B virus surface-antigen (HBsAg)-negative patients were divided according to their HBV serological status into groups A (anti-HBc positive, anti-HBs negative; n=18), B (anti-HBc positive, anti-HBs positive; n=34), and C (anti-HBc negative, anti-HBs positive/negative; n=19), and by anti-HCV positivity (anti-HCV positive; n=32 vs. anti-HCV negative; n=39). Liver biopsy samples were taken, and HBV DNA was quantified by real-time PCR. Results: Intrahepatic HBV DNA was detected in 32.4% (23/71) of the entire cohort, and HBV DNA levels were invariably low in the different groups. Occult HBV infection was detected more frequently in the anti-HBc-positive patients. Intrahepatic HBV DNA was detected in 28.1% (9/32) of the anti-HCV-positive and 35.9% (14/39) of the anti-HCV-negative subjects. The HCV genotype did not affect the detection rate of intrahepatic HBV DNA. In anti-HCV-positive cases, occult HBV infection did not affect liver disease severity. Conclusions: Low levels of intrahepatic HBV DNA were detected frequently in both HBsAg-negative and anti-HCV-positive cases. However, the frequency of occult HBV infection was not affected by the presence of hepatitis C, and occult HBV infection did not have a significant effect on the disease severity of hepatitis C. (Korean J Hepatol 2011;17:206-212)

明代筆記 「玉壺氷」의 國內傳來와 朝鮮刊本

金長煥 연세대학교 인문과학연구소 2001 人文科學 Vol.83 No.-

'玉壺氷'是玉壺內之氷, 譬隱者的高, 此是象徵的表現, 不爲俗塵所, 恒守高節, 常樂雅致之. 『玉壺氷』是明都穆(1458~1525)編錄的中國古代筆記集. 都穆採漢代至明初古來'高逸'之事而錄之, 總編爲72條短篇文章, 不是自撰. 他通此編錄反映志向隱居之心. 『玉壺氷』全本至今爲國內外學界所未聞, 其善本現藏處亦所未知. 據筆者調査資料, 現藏『玉壺氷』刻本有七種: 韓國藏4種, 中國(台灣)藏3種, 日本藏1種. 都不是都穆原刊本. 本論文分爲三個領域而論述. 第一, 全面考察『玉壺氷』編錄者都穆、『玉壺氷』所載故事之採錄出處及思想傾向、『玉壺氷』續作等等. 第二, 對現存『玉壺氷』版本, 分明淸代刊本及朝鮮刊本, 具體分析各版本特徵. 第三, 點校朝鮮庚辰年(1580?)務安縣刊本『玉壺氷』全篇, 筆者推斷此刊本是現存最早刊的. 本論文之意義, 在於尋求國內所藏貴重刊本介紹學界, 將타列入學術論場. 『玉壺氷』最早傳入韓國的時期竝無確切記載. 但若前提朝鮮庚辰年務安縣刊本可能是在1580年刊行的, 可以推斷『玉壺氷』在這時期以前流傳已有相當的時間了. 因當時讀者的廣泛需求, 可致多種刊本及寫本聞世. 此是可見當時讀者何深閱讀『玉壺氷』的一個傍證. 韓國現藏朝鮮刊本4種都是全本, 也是善本, 其文獻資料的價値甚高.

초소형 구조물의 부착 방지를 위한 새로운 자기 집합 물질에 대한 연구

김봉환,오창훈,전국진,정택동,변장웅,이윤식 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

In order to achieve stiction-free polysilicon surfaces, we have suggested a new chemical grafting precursor and confirmed their excellent characteristics. When dichlorodimethylsilane(DDS, C_(2)H_(6)SiCl_(2)), a dialkyldichlorosilane widely used in silicon machining, have been used as a precursor, experimental results were clearly comparable to those of monoalkyltrichlorosilanes octadecyltrichlorosilane (OTS, C_(18)H_(37)SiCl_(3)) or 1H,1H,2H,2H-perfluorodecyltrichloro-silane (FDTS, C_(10)H_(4)F_(17)SiCl_(3)) in terms of stiction reduction. The polysilicon cantilevers were fabricated in the carefully controlled conditions and laser interferometer indicated that their residual stress gradient was 2 MPa/μm upward from the substrate. The SEM images of polysilicon cantilever beams with DDS coating are upward and no stiction is observed up to 2 mm in length.

「古小說鉤沈」校繹 (1) : 「靑史子」·「笑林」 Qing-shi-zi and Xiao-lin

金長煥 연세대학교 인문과학연구소 2002 人文科學 Vol.84 No.-

This paper aims at annotating and translating Qing-shi-zi(靑史子) and Xiao-lin(笑林) : two works of the Chinese ancient miscellanies. Qing-shi-zi contains 3 tales and Xiao-lin contains 29 tales. These two texts are collected in Lu Xun's Gu xiao-shuo gou-chen(古小說鉤沈). This paper is the first work in the serial annotated translation of Gu xiao-shuo gou-chen recorded 36 texts of Chinese 'gu xiao-shuo'.

수영장의 서비스 품질, 고객만족, 전환장벽이 고객충성도에 미치는 영향

김장환,박진기,예종현 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

This Study, Effects of Quality Services, Customer Satisfaction, and the Switching Barrier on Customer Loyalty of Swimming Pools, aims to determine the relationships between (1) services rendered, (2) customer satisfaction, and (3) the switching barrier of public swimming pools in Daegu, Korea with resultant (4) customer loyalty using the regression analysis. To achieve this goal, the Study establishes a hypothetical model based on prior related research, The Systematic Stratified Cluster Random Sampling Method was used in evaluating the sampling data The results of the research conducted using the above-mentioned study methods and data analysis are as following: 1. The more a customer was aware of the services provided by swimming pools, the closer the reciprocal personal relationship and the higher switching costs. Both the reciprocal personal relationship and switching costs are sub-variables of the switching barrier, However, when customers were well-aware of the services being provided, the attractiveness of alternatives seemed to decrease, 2. The more customers were aware of the services provided by swimming pools, the more they felt satisfied with a pools services. 3. As the reciprocal personal relationship developed and the switching costs increased, the switching barrier appeared to increase, However, the attractiveness of alternatives turned out to have minimal or no influence on the switching barrier, 4. The more customers felt satisfied with the pool they were using, the greater the switching barrier became and thus less likely that the customer would change pools, 5. As the switching barrier increased, the customer loyalty to a pool also improved, 6. The service quality, sub-variables of the switching barrier, customer satisfaction, and the switching barrier had significant impacts on customer loyalty to the swimming pool he or she was using at the time, In summary, a customers awareness of exemplary user services of a swimming pool helps him or her to better understand the sub-variables of the switching barrier (except the attractiveness of alternatives) and results in greater customer satisfaction and loyalty of a truly quality-conscious, health facility, In turn, a better understanding by a customer of a pool facilities, services and customer-conscious ness contributes significantly to building the switching barrier and results In higher customer loyalty by the client, Therefore, owners and operators of swimming pools in Dae gu, Korea should focus on three key elements to customer satisfaction: (1) quality of user-services, (2) customer satisfaction, and (3) the switching barrier, Prioritizing pool operations around these three fundamentals will enable pools in the area to gain market share and improve customer loyalty, long term.

프로 축구팀 이미지가 기업 이미지에 미치는 영향

김장환,이성노,김민지,박진기 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

This Study has examined the influences of the images of the pro soccer teams on the images of the businesses by the method of covariance structure analysis. That is, the structural model of the influences of the images of the pro soccer teams and then the causal relationship of each variable has been analyzed quantitatively. For this purpose, the general people seeing the soccer games in the soccer grounds have been the population, and 280 sampling objects have been selected out of them by simple random sampling. Out of the 250(89.3%) collected questionnaires, 213(76.1%) questionnaires, excluding those questionnaires are those whose answers are insincere or some parts of which are missing, are as valid samples. As the measuring instrument for this study, the measures of Aaker (1997) are used, and the questionnaires used by Yu, Taeyong(1990) are revised and restructured to be fit for the purpose of the study. The method of the statistical analysis used to find out the influences of the pro soccer teams on the images of businesses are the covariance structure analysis. The findings concerning the structural models obtained on the basis of the methods of the study and the analysis of the data are as follows: The analysis of the images of the pro soccer teams on the images of businesses show that the factor of credibility influences the intellect, vividness, inhumanity and solidity, the factor of certainty influences vividness, solidity, the factor of advancedness influences inhumanity, wildness. On the other hand, the factor of interestingness doesn't influences the intellect, vividness, inhumanity, wildness, and solidity.

고대 韓民族의 생물 이용과 음양오행론 : BC 8,000년부터 AD 100년경까지 from BC 8000 to AD 100

金玄,申桓浩,宋美長 한국정신과학학회 2001 韓國精神科學學會誌 Vol.5 No.2

Investigation fields of tins study has mainly focused on diversity of bio-organisms and principle of bio-organism utilization practiced by the inhabitants of Far Eastern Asia from BC 8000 to AD 100. The investigation shows that Korean ancestors before 6000 years utilized various bio-organisms similar to modem Koreans. We also learned from the study that utilization of various bio-organism induced anginal principle In their applications. It was confirmed that applications of this principle were practically used by Korean ancestors after BC 4000. Upon review carried out on the food, clothing and shelter with bio-organism application at that time, we could find out that principle of bio-organism utilization was based on theory of the cosmic dual forces and five elements.

연속 저항 회로망을 이용한 국소 광적응 윤곽검출 시각칩의 설계

김경문,김정환,박종호,공재성,신장규,이민호 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

스포츠 참여가 지체장애인의 사회통합에 미치는 영향

김장환,홍성재,박진기 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4

This research examined closely the influence that sports participation has on lineage-disabled person's society integration, inculcated awareness about obstacle sports to storing in secrecy lovers along with disabled person through this, and wished to grope activation way as integration sports that take part in sports with secrecy lover and present basis data for physical education and welfare policy direction, The statistical information on the subject population for this research is as follows: Research target established lineage person registrated as disabled person by population more than 19 years old that inhabits in Daegu-kwangyokshi until 2.904, To achieve this goal, the study established a hypothetical model based on previous related research, The Systematic Stratified Cluster Random Sampling Method was used in evaluating the sampling data, So, used wave and total 212. copies (92.1%) that distribute questionnaire to 230 people all by validity type. In analyzing the data, the SPSS 11.0 program was used for the t-test, One-way ANOVA and simple regression and the Ducan was used for the posterior test, The statistical significance level was 5%, Following results were obtained through the above research methods and data analyses. The results of the research conducted by using the above-mentioned study methods and data analysis are as follows: First, as the period of participating in sports is longer, the degree of existence, participation consumption and whole society integration is the higher, Second, the higher the frequency to participate sports is, the higher access, participation, whole society integration is, However, in the case of participation participating four times a week shows higher degree of social integration than five times a week, Third, existence degree appears higher when the companion of the participant is a community member, the other disabled, a volunteer worker or the disable himself than when the companion is the family member. Fourth, it appears that the degree of satisfaction from sports activities have an effect on that of consumption. Taking all the results mentioned above into consideration, lineage disabled persons can adapt themselves to society and obtain the society integration by participating in sports activities more frequently and continuously, by finding satisfaction in sports activities, and by taking part in integrated sports activities along with the undisabled, Therefore, systematic devices are necessary that can secure, supplement and foster things such as facilities, programmes, and coaches, which help the lineage-disabled and the undisabled do sports activities together.