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헬스클럽의 서비스 질과 고객만족 및 재 가입의사의 관계
성영호,김경식,권창기,정철규,신인숙 龍仁大學校 體育科學硏究所 2003 體育科學硏究論叢 Vol.13 No.1
This study was to analysis the relationship between service quality and consumer satisfaction, repurchase in health club. To attain the goal of the study described above paragraphs, the subject of this study were selected by cluster random sampling method. This study drew out and analyzed 310 people in total. The result of reliability check up was here below; Chronbach 'α=.82-91. To analyze materials, multiple regression and path analysis were used as statistic analysis techniques. The conclusion based on above study method and the result of material analysis are here below. First, the service quality influences on repurchase. Second, the service quality influences on consumer satisfaction. Third, the service quality does directly influences on consumer satisfaction and repurchase. Namely, consumer satisfaction is a variable connecting service quality and re-purchase.
Benz(a)anthracene이 마우스태자 간조직 세포의 소핵출현에 미치는 경태반효과
成耆天,張聖薰,車喆煥 고려대학교 의과대학 1989 고려대 의대 잡지 Vol.26 No.1
In order to adduce the cytogenic effect of Benz(a)anthracene(B(a)A) in pregnant mice through placental barrier to fetus, 125㎎/㎏, 250㎎/㎏, 500㎎/㎏, of B(a)A were administrated to groups of mice 16th pregnancy day About 20 hrs later, freauency of micronuclei in polychromatophilic normoblasts of liver tissues extracted from fetus was measured At the same time, 200 ㎎/㎏ and 400 ㎎/㎏ of Benzo(a) pyrene(B(a)P) were administered with same procedure to compare the frequencies between in cases of B(a)A and B(a)P administration. Especially incase of B(a)A administration, frequencies of their appearances in bone marrows of mother mice and livers of fetuses were compared. On the other hand, pathological changes of fetus liver caused by B(a)A and B(a)P in mothers were observed through microscopic examination in order to reconfirm and compare their transplacental effects. As the results, cytogenic toxicity for feture caused of B(a)A was confirmed. It means that some amount of B(a)A which was administered to pregnant mice could be transmitted to fetus through placental barriers Mutagenicity caused of B(a)A was higher in fetus than mother mouse. The cytogenic toxicity caused of B(a)A both for mother mouse and fetus was lower than that of B(a)p.
고온·알칼리성 Bacillus sp.의 Catabolite Repression 저항성 변이주로부터 Cellulase 및 Xylanase의 생산
최수철,정영철,강갑석,심기환,성낙계 慶尙大學校 1990 論文集 Vol.29 No.2
고온·알칼리성 cellulase 및 hemicellulase 생성 미생물을 분리할 목적으로 pH 10.3의 PY-CMC배지에서 55℃로 3회 연속 직접배양하여 효소 생성능이 우수한 20여균주를 분리하였고, 그 중에서 2개균주를 최종 선정하여 균학적 성상을 조사한 결과 고온·알칼리성 Bacillus속과 거의 일치하였다. 선정, 동정된 고온·알칼리성 Bacillus sp. F204와 F1020은 α-1, 4-glucose 등에서는 효소 생합성이 왕성하였으나, glucose와 같은 단당류에서는 효소가 전혀 유도되지 않았는데, 이 두 균주는 carbon catabolote repression을 받고 있었다. 2-deoxy glucose는 야생주에서는 강력한 repressor로 작용하였고, 야생주의 catabolite repression을 해제 시키는데 antimetabolite로 작용한다는 것이 밝혀졌다. NTG(500㎍/㎖, 50℃, 20∼60분)와 UV(2분) 처리후 2-DG(20mM)에 직접배양하여 강력한 catabolite repression resistant strain인 M-211과 M-367을 분리하였다. M-211과 M-367은 2-DG를 energy원으로 이용하였으며, glucose에 대하여 CMCase는 1.5%, avicelase 및 xylanase는 약 1.0%까지 저항성을 보였다. 또한 두개의 변이주의 효소 활성은 CMCase 2배, avicelase 1.5배 및 xylanase3배의 증가를 보였으며, 각 효소생합성을 위한 gene expression은 cAMP-independent transcription을 하는 것으로 나타났다. Cellulase and xylanase synthesis of thermophilic alkalophilic Bacillus sp. F204 and F1020 isolated in our lab, were repressed by glucose and induced by compounds structurally related to α-1,4 linkage (avicel cellulose and xylan et. al.). Catabolite repression-resistant mutants were obtained through treatment of NTG(500㎍./㎖), UV(2 min) and enrichment culture in 2-deoxy glucose (20 mM) containing PY-glucose on the wild type strain. T재 catabolite repression resistant mutants were not repressed by glucose and produced cellulase complex and xylansase when in grown in the presence of 1.0% glucose and 30mM 2-DC, which were repressors in wild type. Enzyme production was greater with the mutants (CMCase of 2 times, avicelase of 1.5 times, xylanase of 3 times) than with the wild type strains under various test conditions. T재 mutants M-211 and M-367 were potential catabolite repression resistant mutants and their gene expression was cAMP independent transcription.
朴炳星,安基元,李龍哲 울산과학대학 1985 연구논문집 Vol.10 No.1
冷間壓接(Cold Pressure Welding)은 주로 상온에서 壓力에 의해 두 금속간을 접합하는 方法으로, 본 연구에서는 상계이론(Upper Bound Method)에 의한 해석적인 방법을 이용하여, Cu-Cu, Cu-Al, Al-Al Cylinder 間의 壓接에 필요한 荷重을 결정하였다. A cold pressure welding is the method bonding between metals by pressure. In this study, the theoretical load necessary to cold Pressure Welding between Al-Al, Al-Cu and Cu-Cu cylinder is determined by the upper-bound method to analylize it.
실물과 사진제시에 의한 화색과 식물형태의 비교 : focusing on the students of mental ratardation 정신지체학생을 대상으로
안기완,백지성,김은일,조희두,서성철,오찬교 韓國植物ㆍ人間ㆍ環境學會 1999 인간식물환경학회지 Vol.2 No.4
This study was carried out to verify the differences in preference of flower colors by displaying flowered plants and their photos to mentally retarded students. As a result, normal students showed consistent preference against both the objects. But mentally retarded students had a different preference for flowered plants and their photos.