한국인 관상동맥의 변화양상에 대한 형태학적 연구

권태정,이상용,이한영,고영창,권기석,조재홍,김태공,김유훈,조갑래,서중석,이원태 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

학업/비학업자아개념, 학교태도 및 학교적응간의 관계 탐색

金龍來,金兌垠 弘益大學校 敎育硏究所 2001 敎育硏究論叢 Vol.- No.18

The purpose of this examination was to find out the relationship among secondary school learners' academic/nonacademic self-concept, school-related attitudes and school-related coping. And in order to achieve the purpose of this examination sampled middle/high school learners in Seoul and other areas. The instruments used for the data collection were 「Self-Concept Scale」 (Kim, Yong-Rae, 1995), 「School-Related Attitudes Scale」 (Kim, Yong-Rea, Lee, Hye-Won, 1996) and 「School-Related Coping Scale」 (Kim, Yong-Rae, 2000). The collected data analyses were performed using SPSS Win (10 V) program, and analysed Mean score (M), Standard Deviation (SD), Zero-Order Correlation (γ) and Multi-Regression Analysis. All statistic values were tested by t-test and F-test in the significant level of p< .05. And as for the major findings of this examination, only three variables - 'school general self-concept', 'teacher-related attitudes' and 'instruction related attitudes' among all research variables for this examination were significantly positive influences on Korea secondary school learners' "school-related coping" respectively.

Sterol 중간체인 두고리화합물의 입체선택적 합성

조학래,정태명 慶尙大學校 1985 論文集 Vol.24 No.2

The hydroindanedione and the hydronaphthalenedione intermediates have been synthesized for the purpose to obtain important CD-rings for total synthesis of steroids. The starting materials, 2-methylcyclopentane-l,3-dione was obtained through the reaction of succinic acid with propionyl chloride and also 2-methylcyclohexane-l,3-dione newly prepared by the treatment of glutaric acid with propionyl chloride in AIC_3/CH_3N0_2. In the synthesis of 2-methyl-2-(3'-oxobutyl)-cyclopentane-l,3-dione by Michael addition of methyl vinyl ketone to 2-methylcyclopentane-l,3-dione the yield and purity of the product could be appreciably increased by working in an aqueous medium without a basic catalyst, but in the synthesis of 2-methyl-2-(3'-oxobutyl)-cyclohexane-l,3-dione by Michael addition of methyl vinyl ketone to 2-methylcyclohexane-l,3-dione the reaction time of the product could be shortened. with a basic catalyst. (+)-(7aS)-7, 7a,-Dihydro-7a-methyl-l, 5(6H)-indanedione and (+)-(8aS)-3, 4, 8, 8a-tetrahydro -8a-methyl-I, 6(2H,7H)-naphthalenedione were obtained by the stereos elective cyclization of 2methyl-2-(3'-oxobutyl)-cyclopentane-l, 3-dione and 2-methyl-2-(3'-oxobutyl)-cyclohexane-I, 3-dione with optically active catalyzers. The structural proof of these compounds was done by TLC, MP, UV, IR, NMR, and polarimete

간문부 담관암 환자에서 경피경관 양측성 금속 배액관의 효과

김금래,김주형,박원규,장재천,조재호,김태년,김준화,장병익 영남대학교 의과대학 2005 Yeungnam University Journal of Medicine Vol.22 No.2

Background: The purpose of this study was to determine the effectiveness of percutaneously place self-expanding metallic stent for the relief of biliary obstruction in patients with hilar cholangiocarcinoma. Materials and Methods: From November 2001 to December 2004, 48 patients with hilar cholangiocarcinoma were prospectively studied. After percutaneous placement of bilateral self-expanding, uncovered metallic stents, follow-up evaluation was carried out until July 2005. Results: There were 4 cased of Bismuth type Ⅱ,21 cases of Bismuth typeⅢa 8 cases of Bismuth type Ⅲb and 15 cases of Bismuth type Ⅳ. Stent placement was technically successful in all patients All patients had satisfactory biliary drainage, resulting in one week drainage rate of 72.8% and final drainage of 91.9% There were 12 cases (21.3%) of abdominal pain requiring analgesics and 1 case (7.1%) of cholangitis; both were successfully managed with conservative treatments. Late complications occurred in four patient (8.3%), including two patients with cholangitis, one patient with liver abscess, and one patient with biloma; all were appropriately managed by percutaneous drainage. The average length and median durations of stent patency and median survival time were 303 days (range, 60~815) and 338 days (range, 60 ~1175), respectively. Conclusion: Placement of a percutaneous metallic stent is an effective and safe method of palliation of patients with hilar cholangiocarcinoma.

工業系 中等敎員의 資格硏修成果에 관한 調査硏究

李來然,盧泰天,金應圭 충남대학교 공업교육연구소 1984 論文集 Vol.7 No.2

The aims of this study is to survey the achievements of the in-service training which was executed by the In-Service Teacher Training Institute of Chungnam National University during the summer vacation in 1984. After analyzing the responses to the questionnaire which were collectted from 435 technical teachers attending the in-service training, we reached following conclusions as suggestions. 1) It is desirable to establish a committee to decide the levels and contents of the major subjects under the in-service teacher training institute. 2) Lessening the numbers of major subjects and extending the hours of each subjects will make effective results on in-service technical teacher training. 3) It will be better to give a chance to teachers to take option in the major study field. 4) The Ministry of Education should make a plan to give a course on computer programming to technical teachers regularly.

극배치에 의한 직류 서보 모터의 위치제어시스템 설계

김태균,양희주,김규로,선양래 慶熙大學校 大學院 1995 高凰論集 Vol.16 No.-

In this paper, the pole placement design theory is applied to position control system of DC servo motor. The DC servo motor is modelled by second order linear time invariant system. We assume that All state variables are measurable and are available for feedback. If the system considered is completely state controllable, then poles of the close-loop system may be placed at any desired locations by means of state feedback through an appropriate state feedback gain matrix K. This design method called the pole placement. Proposed pole placement design has superior performance in unit step response. The pole placement design theory is very useful to drive the position control system of DC servo motor.

AI-Mg계 합금에서 Pb, Bi, Sn 첨가에 의한 피삭성 향상에 관한 연구

池泰求,李鳳來 홍익대학교 산업기술연구소 1994 産業技術 Vol.3 No.-

A study has been performed on the effect of additives such as Pb, Bi and Sn on the microstructure and cutting characteristics in Al-Mg alloy. The result is obtained as follows. Fine particles of Pb Bi and Sn and of these mixtures were dispersed in the Al-Mg matrix. Some of these additives formed intermetallic compound with Mg. And Al.Fe and other minor elements made a flake type intermetallic compound with Mg. As increased Mg contente in Al-Mg alloy the amount of intermetallic compounds of Al with additives such as Pb, Bi and Sn were increased, and cutting properties were decreased and surface roughness was increased because of the amount of Pb.Bi and Sn as a free cutting elemennts was decreased. The chip treatability of Al-Mg alloy was increased by addition of Pb.Bi and Sn. And with the increase in the cutting speed the chip treatability was decreased and the quality of the cutting surface was greatly improved.

축구 활동이 비만 초등학생의 혈중 지질에 미치는 영향

전태원,박익렬,엄우섭,이동기,우재홍,김경래,김은경,서한교,전병환,김광준,정진욱,박성태 서울대학교 체육연구소 2002 서울大學校 體育硏究所論集 Vol.23 No.2

The purpose of this study is to investigate the effect of Soccer playing in Plasma Lipids in Elementary Obesity Student. Subject for this study were consisted of 16 male(exercise group : 8, non-exercise group : 8), who were over 25% of body fat. Exercise group played soccer 3 times per week, one time was 90 minutes. Weight, % body fat, total cholesterol, high density lipoprotein cholesterol, low density lipoprotein cholesterol, triglyceride, c-ratio were measured at three time periods before exercise begin, and 5 and 8 weeks. The results were summarized as follow: Exercise group decreased significantly more than non-exercise group about weight, % body fat, total cholesterol, low density lipoprotein cholesterol, triglyceride, c-ratio. And Exercise group increased significantly more than non-exercise group about high density lipoprotein cholesterol. In conclusion, the regular aerobic exercise(soccer playing) for 10 weeks has great effects on control of serum lipid which is related to the increase well-being(reduced coronary heart disease, hyperlipidemia, hypertension, obesity et all.) in elementary obesity male student.

간경변증 환자에서 Vibrio cholera non-01, non-0139에 의한 균혈증

조종래,엄태현 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.3

We report a case of Vibrio cholerae septicemia in a 64-year-old male patient with liver cirrhosis who complained of fever, diarrhea, and abdominal pain upon admission. The day before the onset of symptoms, he had had seafood. His blood culture was positive for a non-cholera toxin-producing non-O1, non-O139 V. cholerae. The organism was not cultured in the patient's stool specimen, probably because of the empiric antibiotics treatment before blood collection. He recovered by antibiotics, cefotaxime and ciprofloxacin.

하악골의 부위별 충격시 발생되는 응력에 대한 유한 요소법적 연구

김성래,박태원 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.1

The stress distributions on a human mandible for 18 load cases under two different boundary conditions(mouth open and closed), using the three dimensional finite element modeling were studied. Also, the expected fracture loads for each load cases were calculated by using the Von-Mises yield criterion. The model of a mandible with all teeth was composed of 2402 hexahedron elements and 3698 nodes. CAD techniques were used to analyze the 3-dimensional results. The conclusions of this study were as follows: 1. In the mouth open state, the maximum stress occurred at the condyle neck; when the lateral load was exerted, the maximum stress occurred at the load side condyle. 2. In the mouth closed state, when the loads were exerted on the mandibular body and chin, the maximum stress occurred at the loaded area, and when the loads were exerted on the angle and ramus, the maximum stress occurred at the condyle neck. 3. The expected fracture loads in each load case were calculated using the Von-Mises yield criterion, and it was confirmed that the mandible in the mouth open state was more easily fractured than that in the mouth closed state, and the expected fracture loads are lesser in the cases that load direction is parallel at mandibular plane than 45°. 4. The magnitudes of the expected fracture loads increased in the order of angle, ramus, body and chin in case of the mouth closed state, while chin, body, angle and ramus in case of the mouth open state. 5. The Von-Mises stress concentration regions analyzed by F.E.M. corresponded well with the results of clinical studies.