Helicobacter pylori의 생육에 영향을 미치는 성분과 식품첨가물에 관한 연구

송재철,정혜진,박현정,조은경,신완철 한국식품영양학회 1999 韓國食品營養學會誌 Vol.12 No.5

본 연구에서는 일반적으로 섭취하고 있는 식품재료나 음식 중에 공통적으로 함유한 성분 또는 가공중에 많이 첨가되는 성분을 선정하여 이들이 Helicobacter pylori 생육에 어떤 영향을 미치는지를 검토하였다. 첫째, 일반식품의 주요 성분인 탄소원, 질소원, 무기질을 대상으로 Helicobacter pylori 생육에 미치는 영향을 검토하였다. 그 결과 식품성분 중 탄소원의 종류에 따라 균일 생육활성은 다르게 나타났다. 우선 단당류가 이당류나 다당류에 비교하여 생육을 촉진하였고 특히 단당류 중 포도당은 가장 균의 생육에 큰 영향을 미치는 것으로 나타났다. 그러나 만노오스는 균의 생육을 오히려 억제시키는 것으로 나타났다. 당알코올류인 솔비톨, 만니톨, 말티톨, 크리시톨 등은 균의 생육에 아무런 영향을 미치지 않은 것으로 나타났다. 질소원과 Helicobacter pylori의 생육과의 관계는 평소 식생활에서 많이 섭취된다고 생각되는 일반 음식에 많이 함유되어 있는 유기형 아미노산 성분고 무기형 질소화합물을 대상으로 균의 생육 정도를 비교하였다. 리신, 메티오닌, 시스테인, 트립토판 등은 균의 생육을 촉진하고 아르기닌, 황산암모늄, 염화암모늄 등은 균의 생육에 도움이 되지 않고 암노니아, 요소등은 균의 생육에 도움이 되지 않고 암모니아, 요소 등은 균의 생육에 조금 영향을 미침을 관찰할 수 있었다. 특히 리신과 메티오닌은 가장 균의 생육에 영향을 미치는 것으로 나타났다. 무기염류의 영향에서는 황산마그네슘, KH-2PO_4, 염화마그네슘 등은 큰 영향을 미치지 못하였고 황산철, 염화제일철, 염화제이철은 생육을 억제하는 것으로 나타났다. 식품첨가물의 Helicobacter pylori의 생육 정도를 검토한 것으로, 그 다음이 질화나트륨, 염화나트륨 순이었으며 토코페롤은 전혀 생육에 영향을 미치지 못하였다. The purpose of this study was to choose principal food components contained in diet foods and food additives used for manufacturing processed foods, and elucidate their in vivo effects on the growth pattern of Helicobacter pylori. To do this, the antibacterial effects of various sources of carbon, nitrogen and mineral as an effect agent on Helicobacter pylori were first assessed based upon bacterial growth degree. Results show that the source of carbon tested had different effects on bacterial growth of Helicobacter pylori. It was revealed that a promotional effect of monosaccharides resulted in enhanced growth of Helicobacter pylori compared with disaccharides and polysaccharides. In particular, glucose was observed to be most effective in growth of Helicobacter pylori among monosaccharides tested, whereas mannose to hinder the growth of Helicobacter pylori. Polyols such as sorbitol, mannitol, maltitol and xylitol was, however, observed to show no promotion or suppression effect on growth of Helicobacter pylori. Apart from these, the sources of amino acid and inorganic nitrogen were chosen and tested to assess the promotion or suppression effect of nitrogen sources on growth of Helicobacter pylori. It was found that amino acid such as lysine showed its promotion effect on the growth of Helicobacter pylori, while arginine, (NH_1)_2SO_4 and NH_4Cl showed no effect on its growth. Ammonia and urea were, however, observed to have a positive effect on the growth of Helicobacter pylori. Among these effect agents, lysine and methionine were revealed to show the most positive effect on growth of Helicobacter pylori. Minerals such as MgSO_4, KH_2PO_4, and MgCl_2 appeared to exert their positive growth effects, whereas CaCl_2, and CaSO_4 had a little effect. In addition FeSO_4, FeCl_2, and FeCl_3 brought suppression on the growth of Helicobacter Pylori. In studies of the growth of Helicobacter pylori by food additives, ascorbic acid showed extreme suppression on its growth. Sodium nitrate and sodium chloride were also found to be of negative effect on the growth of Helicobacter pylori in order of degree, whereas tocopherol had nothing to do with microbial growth.

최적화기법으로 설계된 전반사 1/4파장 위상변위차 박막계

安正宣,玄在慶 慶熙大學校 1988 論文集 Vol.17 No.-

Characteristics of dielectric thin film systems utilizing total internal reflection at the hypotenuse of a rectangular prism are investigated to produce quarterwave phase retardation. With BK-7 glass(n=1.52) as the substrate prism, design computation gives ZrO₂ as a proper dielectric film material for 1-dielectric layer system and Al₂O₃-ZrO₂-for 2-dielectric layer system. Specifically, in the 2-dielectric layer system, computer-aided optimization shows the optimal thicknesses of Al₂O₃(n=1.62) and ZrO₂(n=2.03: layers to be 1.811 and 0.691 quarterwave respectively, giving 90˚±1˚ phase retardation in the range of 0.61-0.65μm, whereas reckoning of ±0.5% error of film thickness gives 88.48˚-90.54˚ phase retardation in the same range and reckoning of refractive index change of -0.2 for each layer gives 88.04˚-90.12˚ phase retardation. By preparing and testing the above-designed 2-layer(Al₂O₃-ZrO₂) quarterwave retarder, phase retardation of 86.00。 in the outer rehion which, compared with design value, shows 4.6% and 4.7% error respectively.

산업장 근로자를 대상으로 실시한 한방 건강검진의 만족도

한현정,정재열,권소희,손용선,장두섭,이기남 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.2

The examinees who received oriental and western health examination both and submitted questionnaire were 257 workers in workplace for 1 month during health examination for industrial workers. The research was to compare the satisfaction of oriental and western health examination by the questionnaire. The data that were collected by health examination were analyzed into frequencies, ANOVA, T-test with use of SPSS 10.0 program by the research purposes. The results were as follows: 1. Health examination in satisfaction comparison by the general characteristics of subject was significant in oriental health examination for the subjects who had 9-10 working hours(P〈0.05). 2. The workers who had high confidence in result of health examination, affirmative thinking for requirement of health examination, arbitrary decision for receiving the health examination, had high satisfaction in oriental and western health examination both, It was statistically significant difference. 3. For the difference in subjective health condition's recognition, the subject who answered " Healthy" had high satisfaction in western health examination, and it was statistically in western health examination, and it was statistically significant The subject who answered "Healthy" for the early detection of disease had high satisfaction in western health examination, The subject who answered skeptical for the early detection of disease had high satisfaction. in oriental health examination and it was statistically significant. 4. The respondent who said "Yes" for the question, whether you know about oriental health examination or not before receiving oriental health examinatgion had relatively high satisfaction For the question about including of oriental health examination continuously in the coming future, the subject who replied affirmative answer had high satisfaction in average, and it was significant difference(P〈0.05). 5. For the question that will be needed in the item of oriental health examination, the highest item was the requirement of specific oriental health examination for various diseases, followed by the requirement of medical specialist for individual need of medical examination by the item, and the prescription of herbal medicine, the medical examination of cancer, the interview for folk remedies, the parallel treatment for acupuncture cupping, etc, the medical examination for adult disease, the requirement of room for medical examination etc.

CORBA 기반 의료영상 회의 시스템 설계

김정현,서재현,최항묵 인제대학교 1997 仁濟論叢 Vol.13 No.1

본 연구에서는 CORBA를 기반으로 하여 JAVA언어로 개발된 의료 영상 회의 시스템(MICS :Medical Image Conference System)을 설계 제안한다. MICS는 정지영상, 텍스트 데이터 그리고 음성정보를 ORB를 통해서 전달하는 시스템이다. 플랫폼에 독립적이면서 미들웨어(Middle ware)인 CORBA를 이용한 MICS는 시스템을 개발, 확장성 및 유지 보수가 쉽다는 장점과 비용 절감 효과를 가진다. CORBA의 이러한 장점과 JAVA 언어의 특성을 이용하여 원거리 병원간의 MRI영상이나 X-ray영상, CT영상 등 정지 영상에 관한 회의 시스템을 설계하였다. In recent years, many researchers have worked on CORBA which is independent of platform, object oriented and makes real-time processing possible in distributed objdct environment. And, as the superhigh speed network systems are generalized, the studies on image conference, cyber university, virtual classroom and group co-working are actively pursued. In this paper, Medical Image Conference System based on CORBA in JAVA language is suggested. MICS is a system that can transmits static image, text data and voice information through the ORB. MICS can provides good facilities of development, extensibility and maintenance with reduced cost by using CORBA which is independent of platform and a middleware. For the demonstration, we will show the conference system which can transmit especially the static images such as MRI, X-ray, CT images between remote hospitals, considering those advantages of CORBA and the features of JAVA.

성격장애 진단준거목록의 타당도 연구

황순택,정재홍,조연규,오동렬,김창현,양병환 漢陽大學校 精神健康硏究 1999 精神健康硏究 Vol.18 No.-

내시경적 점막절제술로 치험한 식도 과립상 세포종 1례

강혁주,김성욱,최석진,이중현,장재식,서영범,윤병구,박건욱,김성자,김용섭,강승완,이구,양창헌,이창우,김욱년,이광헌,서정일 동국대학교 의학연구소 2000 東國醫學 Vol.7 No.-

과립상 세포종은 Schwann 세포 기원으로 생각되며 인체에 비교적 드물게 발생한다. 과립상 세포종은 전신 어느 곳에서나 발견될 수 있으나 주로 혀, 구강, 피부 혹은 유방 등에서 호발하며 드물게 위장관에서 발견된다. 위장관에서는 식도에서 가장 호발하며 다음으로 위, 대장 순이다. 과립상 세포종은 대부분, 특히 위장관에서는 양성이며 소수의 악성 병변이 보고되었다. 이러한 이유와 함께 수술 전의 진단이 어렵기 때문에 과립상 세포종에 대한 근본적인 치료는 현재까지 외과적 절제술이다. 최근에 시도되는 치료방법들로는 내시경적 레이저 치료, 용종절제술, 내시경적 점막 절제술 등이 있다. 저자들은 상부 소화관 내시경검사를 시행하여 식도 과립상 세포종을 진단하고 내시경적 점막 절제술을 시행하여 합병증 없이 퇴원하여 현재 재발없이 경과 관찰중인 1례를 경험하였기에 보고하는 바이다. Granular cell tumors, which occur infrequently, are probably of Schwann cell origin. They can occur almost anywhere in the body but usually affect the tongue, oral cavity, skin, or breasts and are rarely found in the gastrointestinal tracts. The esophagus is the most frequent gastrointestinal site, followed by the stomach and the colon. Granular cell tumors are generally benign, especially in the gastrointestinal tract, some malignant lesions have been reported. For this reason, and also because preoperative diagnosis is difficult, the standard treatment for granular cell tumor has until now been surgical excision. In recent years, other therapeutic methods is endoscopic laser therapy (ELT), polypectiomy, endoscopic mucosal resection (EMR). We report a case of esophageal granular cell tumor which was diagnosed by an endoscopy and managed using an endoscopic mucosal resection without complication.

들깨 유전자원의 단백질함량과 지방 및 지방산 특성

홍성택,손석용,노창우,이경희,정재현,박재성 한국국제농업개발학회 2003 韓國國際農業開發學會誌 Vol.15 No.4

공시된 들깨 지방재래종 90개 품종의 단백질함량, 지방 및 지방산을 분석한 결과 다음과 같다. 1. 숙기별로는 중ㆍ만생종의 평균단백질 함량은 22.4%로 비교적 낮았고, 품종분포가 대부분 평균치에 가까웠으며, 조생종은 평균단백질 함량이 24.1%로 비교적 높았다. 2. 평균단백질함량은 소립종(천립중3.0~4.0g이하)이 23.0%로, 중립종(천립중 4.0~5.0g)이나 대립종(천립중 5.0~6.0g)의 22.1%보다 높은 경향이었다. 3. 기름함량은 조생종이 42.6%로 가장 적었고, 중생종이 44.5%, 만생종이 45.5%로 기름함량이 많았으며, 립중별로는 소립종이 44.2%, 중립종이 43.1%, 대립종이 41.5% 대립종일수록 낮은 경향이었다. 4. 지방산조성은 숙기가 늦어짐에 따라 Oleic acid와 Linolenic acid는 다소 많았고, Linoleic acid는 적어지는 경향이었다. Linoleic acid는 극대립종에서 15.5%로 가장 높았고 립중이 가벼울수록 높아지는 경향이었다. 5. 기름함량과 지방산 비율간의 상관 정도를 보면 기름함량과 Palmitic acid, Linoleic acid는 負의 상관이나, Stearic acid, Linolenic acid는 正의 상관을 보였다. Stearic acid는 Oleic acid와 유의적인 정의 상관을 , Linoleic acid와는 부의 상관을 보였다. Oleic acid는 Linoleic acid 및 Linolenic acid와 고도로 유의한 부의 상관을, Linoleic acid는 Linolenic acid와, 포화지방산은 불포화지방산과 유의한 부의 상관을 보였다. Korean local collected strains or varieties of perilla analyzed on their protein and oil content and fatty acids composition in the seed. The strains analyzed were 90 of which grown in the experimental field of Chungbuk Agricultural Research and Extension Services at Cheongwon and Umseong from 2001 to 2002. The seed protein contents of 90 perilla varieties ranged from 19.1% to 29.0% and the average content was 22.8%. There differed by the seed coat color showing 1.9% higher content in light gray than that of dark brown, which may suggest that the seed coat color could be used as a marker gene for breeding high protein varieties. Oil content of medium and late varieties in maturity showed higher as compared to early varieties, and appeared differences by seed coat color, and small seed varieties showed higher seed oil content than in large seed varieties by seed size. Linoleic and linolenic acid content of which major fatty acids in perilla seed were 74.4% in average of tested varieties. Fatty acid composition of perilla varieties were not significantly different by maturity, seed coat color and 1,000 seed weight. Oil content showed high positive correlation, with stearic and linolenic acids and negative correlation with linoleic acid.

Development of Paint-type and Spray-type Electromagnetic Wave Absorbers

Jae-Man Song,Dong-Il Kim,Jeung-Hyun Choi,Jae-Hyun Jeung,Ki-Man Kim 한국전자파학회JEES 2005 Journal of Electromagnetic Engineering and Science Vol.5 No.4

Sometimes, it is more convenient to use paint-type and spray-type EM wave absorbers than bulk-type or sheet-type. Thus, in this paper, we prepared paint-type and spry-type EM wave absorbers. The proportion of ferrites to paints, particle size of magnetic material, and kinds of paint should be considered to prepare a superior paint-type EM wave absorber. There is no big gap between spray-type and paint-type in EM wave absorption of EM wave absorbers prepared with same composition.

Microwave Absorbers Prepared with Alnico Magnets

Jae-Man Song,Dong-Il Kim,Seung-Jae Shin,Sang-Hyun Moon,Jung-Hyun Choi,Jae-Hyun Jeung 한국항해항만학회 2005 한국항해항만학회지 Vol.29 No.2

We suggest a cast Alnico magnet as a new microwave absorber. The proposed Alnico microwave absorber shows advanced microwave absorption properties of 24 ㏈ at 13.3 ㎓ for the thicknesses of 1 ㎜. We also investigated the effects of the carbon, which effects strongly to microwave absorption in Alnico magnet microwave absorbers. Central frequency shifts toward lower frequency with increasing Alnico content which is related to the frequency to show tanδ>1. Also, we investigated the sample thickness dependence on the microwave absorption properties.

Electromagnetic Wave Absorbers Prepared with Alnico Magnets

Jae-Man Song,Dong-Il Kim,Jeung-Hyun Choi,Jae-Hyun Jeung 한국전자파학회JEES 2005 Journal of Electromagnetic Engineering and Science Vol.5 No.3

We compared electromagnetic(EM) wave absorption properties between Alnico magnet (A) and (B) with different magnetic properties. Also, we investigated the effect of carbon, thickness of absorbers, and Alnico contents on EM wave absorption, and clarified the relation between Alnico content and central frequency.