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인터넷쇼핑몰 관련 소비자 피해에 관한 대응행동-패션상품 구매를 중심으로
장현선 한국가족자원경영학회 2006 가족자원경영과 정책 Vol.10 No.3
As e-commerce is expanding rapidly, the consumer's damage in the e-commerce is also dramatically increased. This research was mainly focused on the consumer's damage experiences through the e-commerce, the consumer's behavior's when they were confronted with troubles, and the way to handle their damages in the e-commerce. This research was made with the intention of not only supplying the academic data on the consumer's damage but also understanding the consumer's basic behavior patterns in e-commerce. This research was supported by the surveys conducted to consumers who had previously experienced fashion e-commerce. Total 1230 questionnaires out of returned questionnaires were sampled for the final analysis. Main findings are as follows. 1) More than 90% of respondents answered that they had experienced troubles 2) Most consumers did complain their damages actively and tried to obtain proper cure from the seller.
장현선,권용일,김성곤 대한화학회 2020 Bulletin of the Korean Chemical Society Vol.41 No.7
A metal-free [4?+?3]-annulation of α-halohydroxamates with 2-aminophenyl α,?-unsaturated esters has been developed for the construction of seven-membered 1,4-benzodiazepine-3-one-5-acetates in moderate to good yields (up to 82% yield). The annulation involved the cascade reaction of an generation of azaoxyallyl cation, aza-addition to this azaoxyallyl cation, and intramolecular aza-Michael reaction to yield 1,4-benzodiazepine-3-one-5-acetates.
치주질환이 없는 청년의 치은연상 및 치은연하 치면세균막에 존재하는 치주질환 관련 4종 세균의 분포 비교
장현선,김지연,국중기,유소영,김화숙,김수관,김병옥,Jang, Hyun-Seon,Kim, Ji-Yeon,Kook, Joong-Ki,Yoo, So-Young,Kim, Hwa-Sook,Kim, Su-Gwan,Kim, Byung-Ock 대한치주과학회 2003 Journal of Periodontal & Implant Science Vol.33 No.2
The purpose of this study was to investigate and compare the frequence of 4 periodontal pathogens in the supra- and subgingival plaque in periodontally healthy subjects. Twenty adult individuals aged 22 to 28 years (mean age 23.65 years) participated in this study. All subjects had no pocket sites more than 3 mm deep, and the sites selected for sampling were all negative for bleeding. After drying and isolation of the sites with cotton rolls, supragingival plaque was sampled using sterile periodontal curette. Each plaque sample was placed in individual tubes containing 500 ml of 1X PBS. After removal of the supragingival sample and any remaining supragingival plaque, subgingival plaque samples were taken from the same sites using sterile curette and placed in similar individual tubes. Identification of 4 putative periodontal pathogens from the samples was performed by polymerase chain reaction based on 16S rDNA. Chi-square test was employed to identify significant explanatory variables for the presence of the 4 periodontal pathogens. The data show that Actinobacillus actinmycetemcomitans, Porphyromonanas gingivalis, Bacteroides forsythus, and Fusobacterium nucleatum occurred in 16.9%, 14.4%, 52.5%, and 80.6%, respectively. No significant differences were noted in the periodontal pathogens between supra- and subgingival plaques according to the kind of teeth. However, the incisors were at higher risk for harboring F. nucleatum (p <0.05). Conclusion: These results reveal that anaerobic periodontal pathogens can be detected in supragingival plaques. Supragingival plaque may function as a reservoir of peri-odotopathogens.
Cefixime의 치주병원성 세균 6종에 대한 항균 효과
장현선,박문규,국중기,김화숙,김병옥,Jang, Hyun-Seon,Park, Mun-Gyu,Kook, Joong-Ki,Kim, Hwa-Sook,Kim, Byung-Ock 대한치주과학회 2005 Journal of Periodontal & Implant Science Vol.35 No.2
The aim of this study was to determine the minimal inhibitory concentration(MIC) of cefixime, which is a 3rd generation of cefalosporin, against 6 species of putative periodontopathogens; Fusobacterium nucleatum, Actinobacillus actinomycetemcomitans, Prevotella intermedia, Prevotella nigrescens, Tannerella forsythia and Porphyromonas gingivalis. The efficacy of cefixime was examined by comparing it with that of several antibiotics(amoxicillin, $Augmentin^{(R)}$ ciprofloxacin, metronidazole, and tetracycline), which were used as the control. The MIC was measured using a microdilution method. The MIC of cefixime against the putative periodotopathogens, as a single use regimen, was relatively lower than that of the other antibiotics. The MIC of cefixime/metronidazole against P. intermedia ChDC KB14, P. nigrescens ChDC KB50, F. nucleatum ChDC PV-F37, F. nucleatum ChDC F130, and F. nucleatum ChDC F175, as a simultaneous regimen, was lower than that of the other antibiotics. The concentration of cefixime in the crevicular fluid of volunteers who received 250mg every 12 hours for 3 days was $9{\mu}g/ml$ after 9 hours. In conclusion, cefixime showed good antimicrobial activity in a single treatment or as a combined therapy with amoxicillin, $Augmentin^{(R)}$ or metronidazole against 6 periodontopathogens.