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김동운,이철헌,김홍직,고창조,박연래,조백기 대한피부과학회 1981 大韓皮膚科學會誌 Vol.19 No.2
One hundred and seven patients with alopecia areata were studied in regard to the character of personality, emotional stress during their military life, socioeconomic status and their possible role in the pathogenesis of alopecia areata by ready-made chart and Minnesota Multiphasic Personality Inventory (M.M.P.I,) While only 55. 4% of out patients were enlisted men, 73. 0% of alopecia areata patients were soldiers suggesting that soldiers are more prone to develop alopecia areata. This trend was more apparent among soldiers who were less than 6 months in the service. In clinical scale, abnormal MMPI profiles were noted in 65 patients (60. 7%). Among abnormal MMPI profiles, hysteria scale is most common (23. 1%) and followed by hypochondriasis scale 18. 5%, psychiasthenia scale 16. 9%, and paranoia scale 12. 3%. The alopecia areata group showed significant difference in psychopathic deviate, schizophrenia, and paranoia which is high in person having psychotic symptoms and psychopathic personality. The neurotic triad or anxiety index is not significantly elevated.
저출력 레이저 조사가 성견의 실험적 치주질환 치유에 미치는 영향에 관한 조직병리학적 연구
김동운,이재현,정진형,Kim, Dong-Woon,Lee, Jae-Hyun,Chung, Chin-Hyung 대한치주과학회 1993 Journal of Periodontal & Implant Science Vol.23 No.1
In order to investigate the healing effect on inflammation and bone regeneration of low power density laser radiation in dogs, experimental periodontitis was made in dog mandibular 3rd, 4th premolars. All teeth were classified with four groups of two experimental group and control groups. The second group were irradiated on periodontitis site and the first group were control. The fourth group were irradiated on periodontitis site flap operation and the third group were flap control. Experimental groups were irradiated with GaAs low power density laser of pulse wave and continuous wave of 904nm every day by five days respectively and then control group and experimental groups were evaluated by histo-pathological study. The results were as follows : 1. Experimental periodontits site of dog were irradiated with GaAs low power laser results in reducing of pseudoepitheliomatous proliferation and inflammation at light microscope. 2. After irradiation with low power density laser, experimental groups were revealed that PDL forming activity were increased and newly formed collagen deposition were observed. 3. Low power density lsaer irradiation on experimental periodontits site after flap operation showed that decreasing of inflammation, reducing of osteoclast activity. Capillary proliferation, reduction of pseudoepitheliomatous proliferation. 4. After irradiation with low power density laser on flap experimental site, experimental groups were revealed that newly formed collagen in periodontal ligament and alveolar bone were detected on MT staining.
In vitro 발효에서 Prebiotics와 Probiotics가 돼지 장내미생물과 발효산물에 미치는 영향
김동운,채수진,김영화,정현정,이성대,박준철,조규호,사수진,김인철,김인호,Kim, Dong-Woon,Chae, Su-Jin,Kim, Young-Hwa,Jung, Hyun-Jung,Lee, Sung-Dae,Park, Jun-Cheol,Cho, Kyu-Ho,Sa, Soo-Jin,Kim, In-Cheul,Kim, In-Ho 한국미생물학회 2013 미생물학회지 Vol.49 No.1
본 연구는 prebiotics와 probiotics가 in vitro 배양조건에서 돼지 장내 미생물 및 발효산물에 미치는 영향에 대하여 검토 하였다. prebiotics로써 이소말토-올리고당(IMO), 부분분해 치커리이눌린(CI), 라피노스(RA), 사이클로덱스트린(CD)을 사용하였으며 probiotics로는 Lactobacillus reuteri를 사용하였다. In vitro 발효시험은 육성돈 사료를 소화효소로 가수분해 시킨 사료와 5%의 돈분 그리고 prebiotics와 probiotics를 첨가 또는 무첨가하여 24시간 동안 배양시켰다. 배양 후 발효액 내의 미생물, 가스, pH, 암모니아, 황화수소, 단쇄지방산을 분석하였다. 엔테로박테리아는 prebiotics와 probiotics 첨가구가 대조구와 비교하여 유의적으로 감소하였으며, 락토바실러스 수는 유의적으로 증가하였다. 발효액의 pH는 대조구에 비하여 첨가구에서 낮았으며 prebiotics보다 prebiotics+probiotics 첨가구에서 더욱 낮았다. 암모니아, 황화수소 및 스카톨의 농도는 prebiotics+probiotics 구보다 prebiotics 첨가시 유의적으로 감소하였다. 단쇄지방산은 prebiotics 보다 prebiotics+probiotics 구에서 유의적으로 많이 생성되었다. 본 시험의 결과 prebiotics 첨가는 암모니아, 황화수소 및 스카톨의 농도를 감소시키는데 효과가 있었으며, prebiotics+probiotics는 유산균과 단쇄지방산의 농도를 증가시키는 효과가 있었다. In vitro에서 얻어진 실험 결과가 실제로 돼지에 급여 시 같은 결과가 얻어질런지에 대한 추가적인 연구가 필요하다. In the present study, the effects of prebiotics and prebiotics+probiotics on intestinal microflora and fermentation products were evaluated in a pig in vitro fermentation model. The substrates used in this study were iso-malto oligosaccharide (IMO), partially digested chicory-inulin (CI), raffinose (RA), and cyclodextrin (CD) as prebiotics and Lactobacillus reiteri as probiotics. For a pig in vitro fermentation, the experimental diet for growing pigs was predigested using digestive enzymes secreted by small intestine and this hydrolyzed diet was mixed with a buffer solution containing 5% fresh swine feces. The mixture was then incubated with either prebiotics or prebiotics+probiotics for 24 h. Samples were taken at 24 h, and viable counts of microflora, gas, pH, volatile organic compounds (VOCs) and short-chain fatty acid (SCFA) were analyzed. The viable count of Enterobacteriaceae was significantly decreased (p<0.001) in all treatments containing prebiotics and prebiotics+probiotics when compared to the control. However, the number of lactic acid bacteria increased in the prebiotics and prebiotics+probiotics treatment. The pH values in the fermentation fluid decreased in all treatments when compared to the control, and their effects were greater in the prebiotics+probiotics group than prebiotics group. Fermentation with prebiotics resulted in a reduction in malodorous compounds such as ammonia, hydrogen sulfide and skatole when compared to the prebiotics+probiotics group. Short-chain fatty acid production was also higher for treatment with prebiotics+probiotics than treatment with prebiotics. In conclusion, the results of this study demonstrated that fermentation with prebiotics was effective in reducing the formation of malodorous compounds and prebiotics+probiotics was effective in increasing lactic acid bacteria and SCFA and reducing the pH. Moreover, further studies will be needed to determine whether the results observed in the in vitro model would occur in pigs that ingest these prebiotics or probiotics.
한국재벌의 변모, 1987~2004년 - 순위, 계열회사 수, 자산을 중심으로 -
김동운 한국기업경영학회 2005 기업경영연구 Vol.12 No.2
대규모기업집단은 경제력 집중을 억제한다는 취지로 1987년부터 지정되기 시작하였다. 그 동안 지정기준이 세 차례 바뀌었으며, 특히 IMF사태를 계기로 많은 기득 집단들이 역사의 뒤안길로 사라진 반면, 이들을 대신해 신흥 집단들이 대거 등장하였다. 본 논문에서는 1987년부터 2004년까지 한국 재벌의 면면이 어떻게 변해 왔는지를 고찰하였다. 순위, 계열회사 수, 자산의 기본적인 세 가지 측면을 중심으로 하여 장기적인 관점에서 주요 특징들을 살펴보았다. Korean big businesses, or chaebols, have been regulated by the Fair Trade Commission since 1987. Those to be regulated have changed: all with assets of more than 400 million wons between 1987 and 1992, 30 largest ones in terms of assets between 1993 and 2001, and, from 2002, all with assets of more than 2,000 million wons. In particular, the 1997 financial crisis saw a considerable number of chaebols disintegrate and be replaced by new ones, although most major chaebols remain unchanged. This paper explores the ups and downs of the Korean chaebols in terms of ranking, the number of member companies, and the size of assets between 1987 and 2004.