韓國産 자작나무科의 系統分類學的 硏究(序論)

李相泰,蘇雄永,田寬培,李愚喆 全北大學校 生物學硏究所 1981 生物學硏究年報 Vol.2 No.-

The present paper is an introduction to the whole project of "The systematic studies on Korean Betulaceae". Three studies under the project were performed this year and presented in this report : a review of taxonomic literatures and the construction of distribution maps by Woo-Tchul Lee, pollen morphology by Sang-Tae Lee and Moo-Yeol Kim, and wood anatomy by Woong-Young Soh and Kwan-Bae Jeon.

非結石性 膽囊炎에 關한 臨床的 硏究

裵振善,睦愚均 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2

A clinical study was undertaken on the 35 cases of acalculous cholecystitis among 392 cases operated for the biliary disease during the period from. January 1980 through June 1987 admitted in the department of surgery Chungnam National University Hospital. The results obtained were as followings; 1. The incidence of acalculous cholecystitis was 8.9% and extragallbladder biliary stone 3.1% among all cholecystitis. 2. The incidence of acalculous cholecystitis was slight more prevalent in female in contrast to many reports, i. e. the ratio of male to female was 1 : 1.2. 3. In regard of the age distribution, 5th decade was most prevalent, followed by 7th, 4th, & 6th decade in order of frequency; 91.4% of all patients were older than 30 years. 4. Right upper quadrant pain (74%) was most frequent clinical symptom, followed by nausea and vomiting (57%), fever & chillness (54%), & epigastric pain (37%) in order of frequency. 5. 37% of patiients was within one week of duration of symptoms, 14% between 1∼2 weeks, & 63% of patients within 4 weeks, 6. Right upper quadrant tenderness (77%) was most frequent positive physical finding, followed by jaundice (26%), & right upper quadrant mass (20%). 7. The elevated SGPT(74%) was most frequent positive laboratory finding, followed by elevated SGOT (69%), elevated serum bilirubin above 1. 5mg% (66%), above 3.0mg% (40%), leukocytosis (37%) & elevated alkaline phosphatase (37%). 8. Ileus on simple abdomen (60%) was most frequent finding as diagnostic measures, nonvisualisation of gallbladder in oral cholecystography or cholescintigraphy (17%) ; in most cases, the findings were nonspecific, therefore it can be said that clinical findings were most important in the diagnosis of acalculous cholecystitis. 9. Preoperatively, it was diagnosed as chronic cholecystitis (37%), empyema gallbladder (11%), gallbladder stone (11%), choledocholithiasis (9%), & acalculous cholecystitis (6%). i. e. the preoperative diagnostic accuracy was very low. 10. The most frequent operation underwent was cholecystectomy with or without T-tube drainage (86%), followed by cholecytostomy (9%), & choledochojejunostomy (5. 7%). 11. Bile culture was performed in 14 cases, 79% being positive, among them E. coli was most frequent (29%), followed by Klebsiella (21%), Proteus mirabilis, Streptococcus intermidius, & Streptococcus epidermidis. 12. Regarding etiologic and predisposing factors, ascaris was found in 14% of cases, Clonorchis sinensis (9%), & common bile duct cancer (9%), gallblader cancer (9%), pancreas head cancer (6%), & unclear(37%). 13. Postoperative complications were developed in 8 cases (23%), among them wound infections were most frequent (4 cases), followed by wound dehiscence (1 case), intraabdominal abscess (1 ,case), biliary fistula (1 case), & cholangitis (1 case).

설측 교정치료를 위한 셋업 모형 제작의 정밀도

배기선,손우성 대한치과교정학회 발행 2005 대한치과교정학회지 Vol.35 No.6

치아 모형 및 셋업 모형에서의 정확한 순설측 및 근원심 경사의 측정을 위해 개발된 셋업 모형 측정기로 4개의 제1소구치 발거 후 설측 교정치료를 시행 받은 22명의 성인 환자들의 치료 전후의 진단 모형 및 셋업 모형을 계측하여 설측 교정치료에서 간접 접착술식을 위해 사용되는 셋업 모형의 형태가 치료 결과에 미치는 영향을 알아보고자 하였다. 연구 결과 치료 전 진단 모형과 셋업 모형간의 상하악 6전치의 순설측 근원심 경사 차이는 각각 -3.93 ± 6.98°, 1.87 ± 5.79° 였으며 셋업 모형과 치료 후 치아 모형간의 차이는 -4.31 ± 5.91°, -2.16 ± 3.27°였다. 치료 후 치아 모형에서는 치료 전에 비해 상하악 전치부의 순설측 경사가 -8.24 ± 5.39°만큼 유의성 있게 변화되었다. 또한 facebow transfer 등을 통해 교합기에 치아 모형을 거상하지 않고도 셋업 모형 측정기만으로 치아 모형과 측모 두부방사선규격사진을 서로 연계하여 분석하는 방법을 고안하여 그 임상적용 가능성을 알아보고자 하였다. 이를 위하여 셋업 모형 측정기를 사용하여 진단용 모형으로부터 측정한 계측 게이지 각과 측모 두부방사선규격사진상에 동일한 계측점과 선분들을 작도하여 측정한 산술 게이지 각을 비교하였으며 그 결과 상하악 모두에서 유의성 있는 차이가 나타나지 않았다. 따라서 셋업 모형 측정기를 사용하여 측모 두부방사선사진에서의 계측치들을 진단용 모형에서의 계측치와 서로 연계시켜 분석하고 이를 셋업 모형 제작 시 반영하는 방법이 임상적으로 사용 가능함을 알 수 있었다. Making a precise and ideal set-up model is an essential part in the indirect bonding procedure for lingual orthodontic treatment. To evaluate the accuracy of the making a set-up model, 22 adult patients who received lingual orthodontic treatment with 4 bicuspid extractions were selected, and 3 sets of dental models (before, set-up, and after treatment) were measured using the set-up model gauge, an instrument for measuring the incllnation and acgulation of the clinical crowns on the dental model. Two sets of lateral cephalograms (before and after) from each patient were also evaluated. The mean difference between the before treatment model and the set-up model was -3.93 ± 6.98° for the inclination and 1.87 ± 5.79° for the angulation. And the mean difference between the set-up model and the after treatment model was -4.31 ± 5.91° labiolingually and -2.16 ± 3.27° mesiodistally. The after treatment model differed from the before treatment model about -8.24 ± 5.39° in inclination. There were no significant difference between the measured gauge that measured from the dental model using the set-up model gauge and the calculated gauge angle measured from the lateral cephalogram using constructed points and lines. Using the set-up model gauge, it is possible to evaluate the study model 3-dimensionally in relation with the patient's lateral cephalogram and establish whether the doctor's prescription or overcorrection is built in the set-up model precisely.

高張力 鋼材의 急速入熱後 冷却速度에 따른 組織 및 硬度變化의 硏究

裵且憲,金雨烈,玉英建 釜山工業大學校 1982 論文集 Vol.23 No.2

The weld heat-affected zone of high strength steel was studied and then temperature range is from 1350℃ to 1400℃ Experiment was conducted about high strength steel, SM 58. Their structural and hardening properties were observed by rapid heating and cooling. The results obtained are as follows: 1) The structure was changed by rapid heating above 1350℃ and cooling. That is, the anisotropic structure before rapid heating became isotropic structure after cooling. 2) When the cooling temperature range was from 800℃ to 500℃ and cooling rate range was from 1.6℃/sec to 4.3℃/sec, structures changed were similar each other, but except 23℃/sec. 3) The hardness value had Hv from 190 to 230 when the heating temperature was from 800℃ to 500℃ and cooling rate was changed from 1.6℃/sec to 4.3℃/sec, but for 23℃/sec, vickers hardness had the value from 410 to 430.

3차원 두부방사선규격사진의 정확성에 관한 연구

배기선,박수병,손우성 대한치과교정학회 1997 대한치과교정학회지 Vol.27 No.1

본 연구는 교정 임상에서 흔히 촬영되는 측모와 정모 두부방사선규격사진을 사용하여 3차원적인 두개안면 형태를 재현하였을 때 그 방법의 정확성을 고찰해 보고, 기존의 측모 두부방사선규격사진과 비교하여 어떠한 차이를 보이는지 알아보고자 하였다. 이를 위해 두개안면 골격모형의 3차원 두부방사선규격사진을 형성하고, 선 계측과 각도 계측을 시행하였다. 여기서 얻어진 계측치들을 실제 계측치 및 측모 두부방사선규격사진에서의 계측치와 비교하여 다음과 같은 결론을 얻었다. 1. 3차원 두부방사선규격사진의 선 계측 평균 오차는 0.94±0.62mm, 평균 확대율 100.31±0.91% 이었으며 실제 계측치와 차이를 보이지 않았다(α=0.1). 2. 측모 두부방사선규격사진은 선 계측에서 평균 오차 6.44±1.48mm, 평균 확대율 106.99±1.45%로서 하악체를 제외한 모든 선 계측에서 확대를 보였다(P<0.005). 3. 3차원 두부방사선규격사진에서의 각도 계측은 평균 오차 1.22±0.82°, 평균 확대율 105.72±12.07%로서 실제 계측치와 차이를 보이지 않았다.(α=0.1). 4. 측모 두부방사선규격사진은 평균 오차 1.70±0.94°, 평균 확대율 106.35±15.70%으로 실제 계측치와 차이를 보이지 않았다(α=0.1). Conventional cephalometrics have inherent errors because their evaluation is performed in two-dimension for three-dimensional object. To compensate these errors, three-dimensional cephalograms - derivation of three-dimensional data from conventional lateral and postero-anterior cephalograms - were developed. In this study, the accuracy and precision of three dimensional cephalograms were determined by means of 10 linear and 12 angular measurements on 36 acrylic skull models and by the comparison of conventional lateral cephalograms. The results were as follows : 1. Mean difference between three-dimensional cephalograms and actual models in linear measurements was 0.94±0.62mm and mean rate of magnification of three-dimensional cephalograms was 100.31±0.91%. There were no statistically significant differences between three-dimensional cephalograms and actual models in linear measurements(α=0.1). 2. Mean difference between conventional lateral cephalograms and actual models in linear measurements was 6.44±1.48mm and mean rate of magnification of lateral cephalograms was 106.99±1.45%. There were statistically significant differences between lateral cephalograms and actual models in linear measurements(P<0.005). 3. Mean difference between three-dimensional cephalograms and actual models in angular measurements was 1.22±0.82° and mean rate of magnification of three-dimensional cephalograms was 105.71±12.07%. There were no statistically significant differences between three-dimensional cephalograms and actual models in angular measurements(α=0.1). 4. Mean difference between conventional lateral cephalograms and actual models in angular measurements was 1.70±0.94° and mean rate of magnification of lateral cephalograms was 106.35±15.70%. There were no statistically significant differences between lateral cephalograms and actual models in angular measurements(α=0.1). There were similarity between three-dimensional and lateral cephalograms in angular measurements.

풍화에 따른 퇴적암의 강도 변화

배우석,이봉직,오세욱,이종규 한국산업안전학회 2003 한국안전학회지 Vol.18 No.1

The failure of rock slopes were influenced by weathering, which causes change in the shear strength. The weathering is also directly related to slaking and swelling characteristics. In the paper, the core of diameter 10㎝ was obtained by digging on rock slope of Kong-ju in Korea and the EDX (Energy Dispersive X-ray spectrometer) analysis was carried out to verified element of chief rock-forming minerals. Uniaxial compression tests, slaking tests, and point load test are performed to study engineering characteristics of conglomerate and red shale. As a results of slaking test, slaking index of conglomerate indicate range of 85.11-99.58 and shale indicate 58.37-99.23.Therefore, it is recognized that the resistance of shale to weathering decreases in shallow depth and it greatly influences the strength of rock. The result of uniaxial compression test and point load test show that the strength of sedimentary such as conglomerate and red shale has an influence on both weathering and saturation.

비만 청소년의 웨이트 트레이닝시 세트간 휴식시간 차이에 따른 근력과 심폐기능 비교

배숙진,황우원 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

This study was conducted for two obese youth groups at the age of 19 to 23: One group consisting of 5 obese youth for break time between set, 40-50sec, the other one lmin 30sec-2min in the weight training for 30min a day 3 time a week. The results shown in the comparsion of strength, cardiorespiratory between two groups are as follow: 1. Strength (bench press, deep squat, shoulder press, preacher curl) was no significant obese youth break time between set, 40-50sec group and lmin 30sec-2min group. 2. Resting heart rate was obese youth break time between set, 40-50sec group lower than lmin 30sec-2min but there was no significant difference statistically between the two group. VO₂max, VEmax was obese youth break time between set, 40-50sec group higher than lmin 30sec-2min but there was no significant difference statistically between the two group. Exercise during time there significant difference statistically between the two group. The result of this study suggest that change of cardiorespiratory used short break time of weight training sets program. And the relevant study is required to be progressed.

Human Rotavirus 위장관염에 대한 임상적 고찰

배현,이홍준,서우철,양은석,문경래,박영봉 조선대학교 1994 The Medical Journal of Chosun University Vol.19 No.2

We observed clinical features of 161 patients of acute gastroenteritis who were adimitted to the Department of Pediatrics in the Chosun University Hospital from January 1. 1989 to December 31. 1993. The stool specimen on admission was tested for rotavirus Ag by ELISA(Rotazyme Ⅱ^R)method. The results are as follows : 1) HRV antigen was detected in 97 patients (58.4%) among 161 patients with gastroenteritis. 2) In monthly distribution. 77.7% of cases developed between October and December 3) The majority if patients were under 24month of age with the peak incidnce being between 6-12 month of age. 4) Mean frequency of diarrhea per day were 5.3±2.6 days in HRV antigen rhinorrhea(48.5%), cough(44.7%). Dehydration was noted 87.2% of cases and 93.9% Was isotonic dehydration. 6) The mean duration of hospitalization was 5.3±2.6 days. 7) AST and AIT elevation in HRV group were 91.5%, 42.6% respectively. AST and ALT elevation in Non-HRV group were 73.1%, 26.9% respectively. AST elevation between two group was not correlated statistically. but ALT concentration was significantly increased in HRV group above normal than Non-HRV group (p<0.05%).

분편 인플루엔자백신(split influenza vaccine)의 임상효과 및 면역원성에 관한 연구

우흥정,김동림,정희진,천병철,이주연,안정배,김지희,박찬,신영규,김우주,김민자,박승철 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.1

목적 : 아단위 인플루엔자 백신 접종 후 백신의 인플루엔자 예방효과, 인플루엔자 방어 항체형성, 인플루엔자 백신의 안전성을 조사하고자 하였다. 방법 : 총 571명을 대상으로 인플루엔자 백신 접종을 하였고, 이들 접종자에서 인플루엔자 양질환의 이환을 조사하여 인플루엔자 백신의 인플루엔자예방효과를 알아보았고, 백신의 접종 전 및 접종 4주 후 혈청에서 혈구응집억제물(Hemagglutination Inhibition : HAI) 항체 검사를 실시하여 백신의 방어항체생성을 조사하였고, 백신의 안전성을 알아보기 위해 백신접종 후 1주일 이내의 부작용을 조사하였다. 결과 :백신 접종군과 백신 비접종군에서 인플루엔자 양 질환의 이환을 조사한 결과 접종군 28.35%, 비접종군 35.88%으로 나왔으며, p 값이 0.001로 통계적으로 접종군에서 유의하게 낮았고, 인플루엔자 양 질환의 예방 효과는 20.97%를 보였다. 백신의 방어항체 형성의 평가를 위해 유럽의 인플루엔자 백신 허가 기준을 조사하였는데 B/Guangdong/5/94균주의 백신접종 후 항체가 40이상의 비율을 제외한 다른 기준은 모두 만족 시켰다. 부작용은 전체 조사자 521명중 149명(29%)으로 주로 접종 부위의 국소 부작용을 호소했고, 전신 부작용은 2% 내외였으며 특별히 심각한 부작용은 발견되지 않았다. 결론 : 분편 인플루엔자 백신은 인플루엔자양질환의 예방과 방어항체생성에 효과 있으며 안전한 것으로 사료된다. Background : The safety and effectiveness of influenza vaccine are well known in developed country. The influenza vaccination has been recommended as one of the tentative immunization schedule for indicated persons since 1997 in Korea. But there are still no available data about them, even though nearly 5 million doses of influenza vaccine were used in 1997-1998 season. So it is immediately needed to investigate the safety. efficacy and immunogenicity of influenza vaccine among Korean. Methods : We studied the clinical efficacy of influenza vaccine by monitoring Occurrence of influenza-like illness in influenza risk group(vaccination ; 300, non-vaccination; 215) from December in 1997 to March in 1998. We used the split quadrivalent influenza vaccine containing 15 microgram of hemagglutinin of A/Beijing/262/95(HlNl), A/Wuhan/359/95(H3N2), B/Mie/1/93 and B/Guangdong/5/94. Hemagglutination inhibition(HA1) antibody titers were determined before immunization and 1 months after vaccination And we evaluated adverse effect of influenza vaccination at 7 days after vaccination. Results : Influenza vaccination was associated with si@icant reductions in influenza-like spptoms(vaccination group; 28.35%, non-vaccination group, 35.88%, p=0.001). The preventive effect of influenza-like i3lne.s among influenza risk goup was 20.97%. And immunogenicity of influenza A and B exceeded all of the European licensure criteria for immunogenicity except postvaccination proportion of titers 240 of B/Guangdong/5/94 strain. And the adverse effects were mainly local injection site problem and no serious adverse effect was noted. Conclusion : Split influenza vaccine is safe, inmunogenic and eff'tive in influenza risk group in Korea.

Mn-Zn Ferrite에서 燒成雰圍氣가 磁氣性質에 미치는 影響

裵晋鎬,朴元住 嶺南大學校 工業技術硏究所 1981 연구보고 Vol.9 No.2

The quality factor and A.C initial permeability for various sintering, cooling atmosphere conditions and adding components were measured to prepare ferrites. In this paper, the magnetic properits of Mn-Zn ferrites prepared by this method with various sintering and cooling atmospheres are discussed. The experimental results indicate that the best property in a curve of the A.C initial permeability occurs when the specimen was sintered in the nitrogen atmosphere and cooled in the air atmosphere with 0.7 [wt%] of cobalt addition. The best quality factor is also revealed with the above conditions. The A.C initial permeability increases with a large amount of N₂ gas in the cooling atmosphere, but the quality factor decreases.