호텔주방의 HACCP 시스템적용 유무에 따른 조리종사원의 직무스트레스, 만족, 몰입의 비교 분석

민경천,홍완수 대한지역사회영양학회 2018 대한지역사회영양학회지 Vol.23 No.1

Objectives: This study was conducted to identify differences in job stress, satisfaction and commitment of cooking employees working in hotel kitchens with and without HACCP systems. Methods: Culinary employees of 12 five-star hotels were surveyed and 504 valid data were used for SPSS analysis. Sub factors of working environment factors (job stress, job satisfaction, and job commitment) were examined for analysis. Results: The results showed that hotels that implemented the HACCP system had significantly higher values for the five sub factors of employee job stress (job demand, relationship conflict, organizational system, lack of job autonomy, and job instability; p<0.001). For the sub factors of job satisfaction (internal and external satisfaction) statistic showed a statistically significant value in hotels that did not implement the HACCP system (p<0.001). Job attachment and job importance, which are sub factors of job commitment, showed no difference in relation to the implementation of HACCP system, and job responsibility showed a higher p-value in hotels that did not implement HACCP (p<0.05). Conclusions: The results of the study indicate that culinary employees working at venues with HACCP systems have more job related stress, lower job satisfaction and partially less job commitment. Based on this outcome, venues that have already implemented or are planning to implement HACCP systems should consider the implications regarding their management of employees. Managerial policies that enhance autonomy, job stability, achievement, self-development, promotion, and compensation should also be implemented. Finally, meticulous attention and high investments into the work environment and human resources are necessary.

대학교육과 대화의 철학

민경천,Min, Gyeong-Cheon 한국대학교육협의회 1985 大學敎育 Vol.13 No.-

고려인삼(Panax ginseng C.A. Meyer)의 비전분성 다당류에 관한 연구 1. Dietary fibre, hemicellulose, Cellulose, lignin 및 Pectin 함량과 조성

민경천,조재순 고려인삼학회 1984 Journal of Ginseng Research Vol.8 No.2

This study was conducted to investigate the characteristics of nonstarchy polysaccharides in Korean ginseng, (Panax ginseng C.A. Meyer). The results obtained are as follows. 1. The total sugar content of ginseng roots were decreased with increasing the cultural period. On the other hand, the crude fiber content was increased with that of the ginseng leaves or stems. But the crude fiber in root was much less than that of leaves and stems. 2. The dietary fiber content of ginseng root on 5 years old was 14.20% as neutral detergent fiber, 9.08% as acid detergent fiber, hemicellulose 5.12%, cellulose 7.98% and lignin of 1.10%, respectively. 3. Much more pectin was found in ginseng roots which was cultivated for shooter Period. And it was contained much more in the root than in the leaves and stems. 4. ginseng hemicellulose content in root was 5% to 10%. It was decreased with increasing: cultivated period. Hemicellulose was constituted of xylose, arabinose, glucose, rhamnose and xylose of these sugars was the predominant. 5. X-ray diffraction Pattern of ginseng cellulose showed maximum intensity at tile interplanar angle of 4.1$^{\circ}$.

The study for development of Nano-Liposome with saturated Lecithin

민경천,정노희,강기춘 한국공업화학회 2004 한국공업화학회 연구논문 초록집 Vol.2004 No.1

韓國大學生의 民主意識과 行動原理와의 隔差에 관한 調査硏究(Ⅰ)

閔庚天 弘益大學校 1975 弘大論叢 Vol.7 No.-

Results of this study are as follows; ① College student preserve highly the consciousness to solve the problems with rationality and reason (ratio; 6:4) ② Their response (the group of college-student) keep the high counteraction (about 57%) concerning behavioral moral for group-orientation. ③ Large numbers of student expressed an optimistism about the society-right (37%) ④ Most of them have the hard-headed consciousness of history (the view of reality that is feeling-neutrality) and preserve a intense care of nation (65%) ⑤ Great part of them insist on the nationalized democratism in Korea (35%) ⑥ They take a decreasing interest in the political affairs however they are concerned about the other-directedness to serve for the public affairs (60%) ⑦ They think that elite is build from social life. Most of them emphasize that the school-education do not contribute to formation of character and it looks like that they admit mostly the achievement aspect to realize ability (ties) ⑧ They consider the political leader who posses the pioneer spirit which dedicate for the korean situation (84%)

Geothermal Heating & Cooling System

민경천 한국건축친환경설비학회 2008 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-

롯데월드타워 지열냉난방시스템 적용 사례

민경천 한국지열에너지학회 2016 지열에너지저널 Vol.12 No.1

韓國大學生의 民主意識과 行動原理와의 隔差에 관한 調査硏究 : Group Dynamics를 中心으로 Approach to Gronp Dynamics

閔庚天 弘益大學校 1976 弘大論叢 Vol.8 No.-

설계변수가 수직밀폐형 지중열교환기 설계길이에 미치는 영향

민경천(Kyong Chon Min),최재호(Jae Ho Choi) 한국지열·수열에너지학회 2011 한국지열에너지학회논문집 Vol.7 No.2

A ground loop heat exchanger for the ground source heat pump system is the core equipment determining the thermal performance and initial cost of the system. The length and performance of the heat exchanger is dependent on the ground thermal conductivity, the operation hours, the ground loop diameter, the grout, the ground loop arrangement, the pipe placement and the design temperature. The result of this simulation shows that higher thermal conductivity of grouting materials leads to the decrease length of geothermal heat exchanger from 100.0 to 84.4%

서양민들레 부위별 추출물의 항산화활성 및 nitric oxide 생성저해효과

민경천(Kyung-Chun Min),주진우(Jin-Woo Jhoo) 한국식품과학회 2013 한국식품과학회지 Vol.45 No.2

민들레의 부위별 항산화활성을 검토하기 위하여 지상부 및 지하부의 물, 50, 70, 100% 에탄올 용액과 열수추출조건을 이용하여 얻은 추출물의 DPPH 및 ABTS 라디칼 소거능을 분석하였다. 민들레 지상부 및 지하부 열수추출물의 DPPH 라디칼 소거능이 가장 우수한 것으로 분석되었으며, 추출물의 DPPH 라디칼 소거력은 열수추출물 > 70% 에탄올 추출물 > 50% 에탄올 추출물 > 100% 에탄올 추출물 > 물 추출물 순으로 나타났다. 추출물의 ABTS 라디칼 소거활성을 검토한 결과 지상부 및 지하부의 추출물중 열수추출물이 가장 높은 ABTS 라디칼 소거능을 나타낸 반면 물추출물은 가장 낮은 소거능을 나타내어 DPPH 라디칼 소거능을 분석한 결과와 유사한 경향을 나타내었다. 또한 항산화활성이 가장 우수한 것으로 나타난 열수추출물을 이용하여 극성별 유기용매(클로로포름, 에틸아세테이트, 부탄올)을 이용한 분획물을 얻어이들의 항산화활성을 검토하였다. ABTS 및 DPPH 라디칼 소거활성, 총 페놀성화합물의 함량을 분석한 결과 에틸아세테이트 분획물의 항산화 활성이 가장 우수한 것으로 나타났으며, 에틸아세테이트 분획물을 제외한 클로로포름, 부탄올, 물 분획물의 경우 지상부 분획물이 지하부보다 라디칼 소거능이 우수한 것으로 나타났다. 각 분획물들이 RAW 264.7 대식세포주에서 LPS 처리에 의한 nitric oxide 생성에 미치는 영향을 검토하였다. 지상부 및 지하부의 에틸아세테이트 분획물이 LPS 처리에 의해 증가한 nitric oxide의 생성을 효과적으로 억제하였으며, 지상부 에틸아세테이트 분획물 20 ㎍/mL 처리시 LPS 처리에 의해 증가된 NO 생성을 약 50% 저해하는 것으로 나타났으며, 이러한 효과는 지하부 에틸아세테이트 분획물보다 우수한 것으로 분석되었다. 본 연구는 민들레 부위별 다양한 추출조건에서 획득한 추출물들의 총 항산화활성을 비교분석하여 제시함으로써 소재개발을 위한 추출조건을 설정하는데 활용될 수 있을 것으로 판단되며, 또한 각 분획물들의 총 항산화활성 및 RAW 264.7 대식세포주를 이용하여 LPS 처리에 의해 증가된 nitric oxide의 생성억제능을 비교분석하여 제시함으로써 기능성 소재개발에 있어서 기초자료로 활용 할 수 있을 것으로 판단된다. In the current study, antioxidant properties of extracts from different parts of Taraxacum officinale were determined by measuring the radical scavenging activity of 1,1-diphenyl-2-picryl hydrazyl(DPPH) and 2,2-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). The antioxidant activity of aerial and root parts of this plant was measured in extracts obtained from various solvents, e.g., water, 50, 70, 100% ethanol, and hot-water. The hot-water extracts had the highest radical scavenging activities. A further study was conducted to determine the total antioxidant activity of hotwater extract fractions obtained from different solvents, e.g., chloroform, ethyl acetate, n-butanol, and water. The ethyl acetate fraction of this extract displayed the strongest DPPH and ABTS radical scavenging activity and the highest total phenolic contents. The inhibitory effect of individual solvent fractions on the production of nitric oxide in LPS-stimulated RAW 264.7 cells was measured. The results indicated that the ethyl acetate fraction of aerial and roots part extracts significantly reduced nitric oxide productions.