만성 부비동염에서 섬모운동과 전산화 단층촬영에서의 상악동 점막비후의 상관관계

민양기,전상준,이재서,이철회,이강수,윤자복,이원진,박광석 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7

탄화수소에 의한 NO의 선택적 촉매 환원 반응에서 Pt/MCM-48 촉매의 반응 메커니즘에 관한 연구

양재승,이성철,장재훈,이병용,정석진 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.4

기본형의 Si-MCM-48에 알루미늄 치환량과 귀금속 담지량의 변화에 따라 다양한 촉매를 제조하였고, 이를 탄화수소에 의한 선택적 촉매 환원(HC-SCR)반응에 적용하여 각각의 NO 환원반응 특성을 비교 고찰하였다. Pt/MCM-48 촉매의 NO 환원 활성을 고찰한 결과, 문헌상 보고 되고 있는 Pt/ZSM-5 촉매를 이용한 NO의 제거 활성과 비교하여 매우 우수한 결과를 보였다. 또한 5 vol% 이하의 산소 조건에서 그 활성이 현저하였으며, 특이하게 최고 활성에 도달한 후에 반응온도가 600℃까지 증가하여도 계속하여 그 활성을 유지하였다. XRD, TPD, TGA, XPS 등의 특성화를 통해 촉매의 표면 특성 및 반응 mechanism에 관한 연구를 수행하였으며, 이러한 결과로부터 Pt/MCM-48 촉매가 기존 촉매보다 일정 산소 조건에서 우수한 성능을 보이는 것은 담체의 표면 산특성과 촉매 고유의 redox mechanism에 기인한 것으로 해석하였다. Pt supported on MCM-48 was tested as a new catalyst for hydrocarbon-SCR process. MCM-48 is a new support material of the catalyst for SCR. Characterization and de-NO, activity test were performed for the newly synthesized MCM-48-supported catalysts. Pt(l wt%)/MCM-48 showed 90% of NO reduction at 250-500℃. It should be concluded, from what has been said above, that Pt/MCM-48 catalysts showed higher NO reduction conversion than zeolite based catalyst, and it was not affected by 5 vol% O₂ concentration and water vapor addition. It would be supposed that sustention of activity in that oxygen condition might be caused by surface acidic characteristic and its characteristic redox mechanism.

남자대학생들의 피부관리실태와 관련요인 조사연구

배향선,남철현,김성우,최연희,강영숙,김선혜,구재희 慶山大學校 保健福祉硏究所 2003 保健福祉硏究 Vol.8 No.-

This study was conducted to examine aspects of skin care of male students at colleges and universities of male students at colleges and universities and its related factors in order to provide informations on skin care for men. The subjects of this study was 600 men who were students at colleges and universities in Daegu City and Kyungbuk Province. Data were collected from May 1, 2002 to June 30, 2002. The results of this study can be summarized as follows. 1. According to the respondents' socio-demographic characteristics, 55.9% of them was 20 to 24 years old and 29.6% was more than 25 years old. 84.9% of them was university students, while 15.1% was college students. 25.3% belonged to the lower class, while 22.4% belonged to the upper class. 52.7% did not have a girl friend, while 47.3% has a girl friend. 41.8% lived in big cities and 48.1% lived in small and medium cities. 2. 63.0% of the respondents replied that they were in good health, while 8.8% of them were in bad health. 41.9% of them was concerned about face and body skin care, while 14.1% was not concerned about it. Among most serious skin problems, the proportion of acne was highest (44.5%). 3. Among the persons who advised the respondents when they selected cosmetics, the proportion of selecting cosmetics as their own will was highest (44.7%). 25.3% of them selected it by recommendation of female family members and 18.3% selected it by recommendation of the girl friend. In the case of selecting it as their own will, the older they were, the higher the proportion was. In the case of having the girl friend, the proportion of selecting cosmetics by recommendation of the girl friend was higher than that of selecting it by recommendation of female family members. 4. 90.4% of the respondents replied that they never visited skin care rooms, while only 9.6% of them replied that they ever visited them. In the case of visiting skin care rooms, the proportion of the upper class was higher than that of the lower class. 5. According to the frequency of visiting skin care rooms, the proportion of once a week was highest (51.0%). 29.4% of them visited them once per 6 months and 19.6% visited them once a month. 6. In the case of the reasons they did not visit the skin care rooms, the proportion of 'no interest' was highest (36.6%). 23.2% did not visit them because they thought the fee for skin care was expensive and 19.5% did not visit them because they thought the skin care room were only for women. 7. In the variables of giving advice concerning skin care, the proportion of 'their own' was highest (29.8%). The proportion of female family members was 28.2% and the proportion of the girl friend was 27.7%. In the case of the age related to having the girl friend's advice, the proportion of 'over 25 years old' was 31.9% and the proportion of '20 years old to 24 years old' was 26.4%. The proportion of 'less than 19 years old' was 23.5%. The older they were, the more they had the girl friend's advice. 8. According to the sources of getting information on skin care, the proportion of mass media (TV, Radio etc.) was highest (36.7%). 26.0% of them obtained them through the girl friend and 13.9% obtained them through female family members. Only 8.4% got them through magazines. 9. The factors influencing the experience of visiting skin care rooms were experience of side effect of foundation cosmetics, concern about skin care, expiration date of cosmetics or checking of directions of using cosmetics, donsideration of skin character when using soap, and regular exercise for health. From above results, it can be concluded that skin care and beauty specialists working in beauty academies or the department of cosmotology at colleges or universities must make efforts to change the negative recognition of male skin care through deep and comprehensive research. It is also necessary to develop systematic education course and institutionalize the qualification management system.

솔-젤법에 의한 Nb_2O_5-Fe_2O_3 혼합산화물의 제조 및 산 특성조사

정석조,양희정,권재범,이내우,우희철 釜慶大學校 2000 釜慶大學校 論文集 Vol.5 No.-

In this study, some of results from a study conducted on the preparation of niobium coated hematite particles to be used as a catalyst are presented.α-Fe_2O_3 (hematite) particles obtained by aging an acidic solution of ferric(Ⅲ) ions at high temperature were first prepared as core particles and synthesised by hydrolysis at high temperature with layers of amorphous niobium pentaoxide (Nb_2O_5) deposited by the hydrolysis of niobium pentachloride. The effects of varying molecular ratio of Nb/Fe (10/1, 5/1, 1/2, 1/5, 1/10) were studied. The synthesised particles were characterized for their physical and chemical properties using XRD, SEM, TPD, BET etc. The process of the surface coating showed heterocoagulation rather than surface nucleation and growth. A preliminary investigation of the acidic characterization and specific surface area of the synthesised particles showed that these particles can achieve an acidic characteristic changed and enhanced specific surface area of that of pure niobia and α-Fe_2O_3 prepared here.

일 간호대학의 지역사회 방문간호사업 사례

강윤숙,최양자,고영애,전시자,조갑출,이옥철,주혜경,신기수,안은숙 적십자간호전문대학 2000 적십자간호전문대학논문집 Vol.22 No.-

관절염 환자의 실태와 관련요인에 대한 분석적 연구

정승기,남철현,신두만,양숙희,김기열,이미경,문기내 대한보건협회 2002 대한보건연구 Vol.28 No.3

This study was conducted to examine the condition of patients with arthritis and its related factors. Data were collected from 100 people who suffered from arthritis in Seoul. Busan, Daegu, Daejun, Junjoo, and pohang from April 2, 2000 to July 31, 2000. The results of this study are summarized as follows : 1. 6L0% of the subjects were female. The incidence rate of arthritis was higher in the higher age group, lower educated group, and thinner group. In case of male, the incidence rate was higher in the groups of single, residents in big cities, and technicians. In case of female, it was higher in the groups of the married, residents in towns or villages, and housewives. 2. According to the parts of arthritis, knee joint covered 67.4% and backspine joint covered 9.0%. The incidence rate of arthritis was higher in the groups of forties, housewives, single, irreligious people, residents in towns and villages, primary school graduates, thin people, and walk exercisers. 3. The arthritis patients felt pain most when they stood up (31.5%). According to the time when they felt pain most, the time when they were active during daytime was 31.5% and nighttime was 29.8%. When they got up in the morning was 22.4%, while 10.9% felt pain all cay long. 4. they had arthralgia knees and cramp in crook of the knees (21.8%). Their knees ticked when they moved (21.1%). The had to rest hands on anyplace when they stood up (18.7%) and they could not completely unfold their knees. 5. The medical institutions which diagnosed them showed significant difference in the variables of sex, age, marital status, religion, place in residence, education level, economic status, obesity level, exercise, parts of arthritis, and posture of feeling pain. from above results, it can be concluded that it is necessary to develop appropriate medical treatment on the basis of the respondents' socio-democraphic characteristics, pain parts, period of having a pain, satisfaction level with treatment and its related factors. Therefore, related professionals and organizations must develop education program for prevention of arthritis in order to educate them.

여성의 피부관리실태와 관련요인

구재희,남철현,최연희,배향선,신옥순,양숙희,이명옥 慶山大學校 保健福祉硏究所 2002 保健福祉硏究 Vol.7 No.-

This study was conducted to analyze aspects of women's skin care and related factors in order to contribute to community residents's right skin care. The subjects of this study was 800 women who were 15 to 65 years old. Data were collected in Daegu City and Kyungsan City from June 21, 2002 to August 18, 2002. The results of this study can be summarized as follows. 1. According to socio-demographic characteristics of the respondents, 26.8% of them were in twenties. 50.9% of them was students at colleges or graduated from collges. 38.3% was students and 37.5% was housewives. 55.5% belonged to the middle economic class. 2. 47.9% of the respondents replied that they were in good health. 57.2% of them had fair skin, while 25.1% had dark skin. According to health condition of face skin, 61.5% was in regular condition, while 26.0% was in bad condition. 29.9% had drying face skin and 21.3% had neutral or complex character of face skin. 3. Among the reasons they had trouble with face skin, the proportion of having the rough skin was highest (25.0%). 16.6% replied that they had trouble with a lot of wrinkles and 16.3% replied that they had trouble with dark face skin. 25.4% responded that their face skin was too tight. 13.3% replied that they had trouble with scars. 4. The factors significantly influencing the experience of skin care were age, education level, residence, experience of side effect of cosmetics, experience of skin diseases on face or body, experience of trouble after receiving skin care, and experience of trouble with acne. From above results, it can be concluded that selection of proper skin care rooms is important in receiving desirable skin care and preventing side effect related to skin care. The women also must be cautious in selecting and using cosmetics and massage pack. The government, related organizations, and skin and beauty specialists must make efforts to develop education programs for healthy skin care.

활동성 궤양성 대장염 환자에서 발생한 뇌정맥 혈전증 1예

남승우,양석균,정훈용,주연호,홍원선,민영일,김종성,유창식,서대철 大韓消化器病學會 1998 大韓消化器病學會誌 Vol.32 No.3

Sound Analysis in an In Vitro Endotracheal Tube Model

( Young Sik Park ),( Young Wook Kee ),( Kwang Suk Park ),( Jin Woo Lee ),( Sang Min Lee ),( Jae Joon Yim ),( Chul Gyu Yoo ),( Young Whan Kim ),( Sung Koo Han ),( Seok Chul Yang1 ) 대한내과학회 2011 The Korean Journal of Internal Medicine Vol.26 No.4

Background/Aims: Complete endotracheal tube obstruction is a medical emergency, and partial occlusion causes increased breathing rates and failure to wean off mechanical ventilation. Partial occlusion may be underestimated due to the lack of proper detection methods. We tested whether the sound of an endotracheal tube could be used to detect an endotracheal tube obstruction using an in vitro model. Methods: An endotracheal tube was connected to a ventilator on one end and a test lung on the other. Sounds were recorded with a microphone located inside the endotracheal tube via a connector. During mechanical ventilation, we changed the endotracheal tube internal diameter from 5.0 to 8.0 mm and different grades of obstruction at different sites were used along the tube. Sound energy was compared among the different conditions. Results: The energy of endotracheal tube sounds was positively correlated with the internal diameter and negatively correlated with the degree of obstruction. The rate of decline in energy differed with obstruction location. When the obstruction was more distal, the rate of decline in endotracheal sound energy was more rapid. Conclusions: Changes in the sound of an endotracheal tube can be used to detect an obstruction. Further studies are needed for clinical application.

사람 위선암에서 cathepsin L의 발현증가

홍원선,홍석일,박인철,손영숙,정훈용,양석균,김해련,민영일 울산대학교 의과대학 1996 울산의대학술지 Vol.5 No.1

cathepsin L은 lysosomal cysteine 단백분해효소로서 기저막(basement membrane)과 세포외기질(extracellular matrix)을 파괴하여 암세포의 침윤과 전이에 중요한 역할을 하는 물질로 알려져 있다. 이러한 cathepsin L에 대한 mRNA 발현도를 5개의 사람 위선암(gastric adenocarcinoma) 세포주와 5명의 위선암 환자에서 채취한 조직에서 방사능으로 표지된 cathepsin L특이 cDNA를 사용한 Northern blot법으로 측정하였다. 위암의 전이병소에서 수립한 세포주인 SNU-5, SNU-16, MKN-45와 Kato Ⅲ에서는 cathepsin L mRNA가 발현되었으나 원발병소에서 수립한 AGS 세포주에서는 mRNA의 발현이 관찰되지 않았다. 5명의 위암 환자에서는 원발병소, 전이가 확인된 임파절 및 암 근처 정상 위점막에서 각각 조직을 채취하여 cathepsin L mRNA의 발현을 측정하였다. 원발병소와 전이병소에서는 모두 cathepsin L mRNA가 발현되었으나 정상 위점막조직에서는 전예에서 mRNA 발현이 관찰되지 않았다. 한편 mRNA의 발현도는 1예에서는 전이병소가 원발병소에 비해 높았으나, 2예에서는 전이병소에서 발현도가 낮았으며, 나머지 2예에서는 원발병소와 전이병소 사이에 차이가 없어, 원발병소와 전이병소 사이에 mRNA의 발현도의 일관성 있는 경향은 관찰되지 않았다. 이상의 결과는 cathepsin L은 위암의 발생과 진행에 있어 암세포의 침윤과 전이를 촉진하는 것 이외에 또 다른 역할을 할 가능성을 시사하고 있다고 사료된다. Cathepsin L, a lysosomal cysteine protease, is known to play an important role in cancer invasion and metastasis by degrading the components of basement membrane and extracellular matrix. The mRNA expression of cathepsin L was determined by Northern blot analysis using a radiolabeled cDNA specific for cathepsin L in five human gastric adenocarcinoma cell lines and five surgical specimens of primary gastric adenocarcinomas, their metastatic lymph nodes and matched adjacent normal mucosae. The mRNA of cathepsin L was expressed in all of the four cell lines established from the metastatic sites, SNU-5, SNU-16, MKN-45 and Kato Ⅲ, while not detected in one cell line established from the primary site, AGS. The mRNA was expressed in all of the five primary and five metastatic cancer specimens tested, while it was not detected in all matched normal mucosae. The intensities of the mRNA expressions, however, did not show the consistent pattern between primary sites and metastatic lymph nodes. These results suggest that cathepsin L may have the other function in addition to facilitation of the invasion and metastasis during the development and progression of stomach cancer.