췌장염에 의한 가성낭종내에 생긴 가성동맥류 : 1례 보고

오연희,이채경,김승현,이성우,양창현,이정호,이영현 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

만성 췌장염의 합병증으로 생긴 가성동맥류는 드문질환으로, 반복적으로 다량의 출혈을 일으킬 수 있으며, 치료를 하지 않을 경우 사망율이 높기 때문에, 조기 진단과 치료가 필수적이다. 저자들은 38세 남자 환자에서 췌장염의 합병증으로 생긴 가성낭종내에서 발생한 가성동맥류 1예를 경험하였기에 보고하는 바이다. 가성 동맥류의 색혈류도플러상 낭종내에 양방향 흐름의 와류를 볼 수 있었다. Pancreatic Pseudoaneurysm within Pseudocyst from Pancreatitis: 1 Case Department of Diagnostic Radiology and Internal Medicine, College of Medicine,DongGuk University Yeon Hee OH M.D., Chae Kyeong Lee M.D., Seoung Hyeon Kim M.D., Sung Woo Lee M.D., Chang Heon Yang M.D., Jung Ho Lee M.D., Young Hyun Lee M.D. Pseudoaneurysm from pancreatitis is uncommon, but it can cause recurrent and massive hemorrhage. Because of high morbidity and mortality, early detection and treatment of the pseudoaneurysm is needed. We report a case of pseudoaneurysm within pseudocyst from pancreatitis. Color-flow Doppler sonography shows bidirectional flow and turbulent arterial flow, within anechoic mass.

素問·氣交變大論에 對한 硏究

蔡英?,鄭憲瑩,琴坰樹,朴炅 대한한의진단학회 1998 大韓韓醫診斷學會誌 Vol.2 No.2

The contents of Ki Kyo Byun Dae Ron(氣交燮大論) are explained on the basis of the so-called "Five elements motion and six kinds of natural factorsc(五運大氣)" theory. The relevant adaptation of the human body to natural enviroment is one of the basic theoties in Oriental medicine, according to which the physical structure and physiological phenomena of human body as well as the physiological changes are in adaptative confirmity with the variations of the natural environment, and hence in diagnosis and treatment the influences of environmental factors such as climatic conditions, geographical localities, etc., should be considered. The theory of Fve Circuit Phases and Six Atomsphric Influences is based on this thought. Summeriiing the contents of the Ki Kyo Byun Dae Ron(氣交燮大論) in reference to the contents of successive generation note, the contents were as follows; What attract our attention in chapter Ⅰ are climatic changes and pathologic explanations on the diseases which are invited by a certain excessive circuit phase. What attract our attention in chapter Ⅱ are climatic changes and pathologic explanations on the diseases which are invited by a certain insufficient circuit phase. The main point of chapter Ⅲ is the promoting and counteracting relations of the five circuit phases taken as a whole, which forms a self-limiting balanced process. What attract our attention in chapter Ⅳ, Ⅴ is the change of five planets brigtness which is invited by excessive or insufficient circuit phase.

用寒遠寒과 用熱遠熱에 대한 考察 : 六元正紀大論에서

채영진,신창환,임현택,여성원,한성규,이재원,정헌영,금경수 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

Five elements motion and six kinds of natural factors influence not only human disease but also difference of medicine effect. Because the climate of summer is very hot, that is easy to increase the properties of hot medicines, a doctor must be careful to use it in summer. Also the climate of winter is very cold, that is easy to increase the properties of cold medicines, a doctor must be careful to use it in winter. But in the certain conditions to use diaphoretics or purgatives, in spite of that regulation a doctor can use them.

十二變에 대한 考察 : 六元正紀大論을 중심으로

채영진,남호현,이석모,여성원,한성규,이재원,안민식,정헌영,금경수 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

The six kinds of natural factors(It refers to wind, cold, summer-heat, dampness, dryness and fire.) is constantly moving to maintain the balance of whole climate of one year. Four seasons are the largest mediation of whole climate of one year. The cold and the heat have the relationship of mutual intervention. The dampness and the dryness have it also. In this process they raise various climate appearance. And that various climate appearance influence the whole lives on the earth. This paper is concerned with the classification of them.

能動 振動制御 半徑方向 磁氣베어링의 强性에 관한 硏究

김재실,안승국,이재환,안대균,최헌오 창원대학교 산업기술연구소 2001 産技硏論文集 Vol.15 No.-

This article describes (1) 2 and 3 dimensional electromagnetic finite element models for an active heteropolar radial magnetic bearing, (2) the procedure for obtaining the bearing stiffnesses by simulating the models and (3) the reviews of the models by comparing an experimental test to the ideal closed loop analysis with the stiffnesses calculated from(2). The 3 dimensional model for the magnetic bearing may be very effectively applied to several types of magnetic bearings.

Dentacolor Resin System의 물성에 관한 연구

정재헌,고영무 대한치과기재학회 1996 대한치과재료학회지 Vol.23 No.1

The aim of this study was to evaluate the physical properties on Dentacolor resin system. Fifteen specimens(20mm in diameter, 1mm in height) of Dentacolor resin were prepared according to American Dental Association Specification No.27 and the color parameters of L*, a*, b* were measured with a computerized colorimeter(Hunter Associated Laboratory Inc., USA) in the transmittance mode. To measre the amount of water sorption and solubility, fifteen specimens were immersed in distilled water at 37±1℃ and then stored extended up to 20 weeks. Microhardness test were made on fifteen Dentacolor resin specimens using microhardness tester(Shimadzu, Japan) at a cross head speed 50μm/sec., loading time of fifteen seconds, and 50gm of load applied. To measure the shear bond strength between Dentacolor resin and three kinds of dental casting alloys, that is, Neocast 4(Au alloy), Novopal 3(Ag-Pd alloy), and Verabond(Ni-Cr alloy), fifteen specimens were cast into square paddles(15 mm ×15 mm ×1mm) according to the manufacturer's recommendation. Fifteen specimens were prepared in cylindric molds(6mm in height, 3mm in diameter) for the compressive strength measurements. Fifteen specimens were prepared in cylindric molds(3mm in diameter) for the compressive strength Measurements. Fifteen specimens were prepared in cylindric molds(3mm in height, 6mm in diameter) for the diametral tensile strength measurements. The specimens were tested on a universal testing machine(Model No. AGS 110-A, Shimadzu, Japan) at a crosshead speed of 0.1 inch/min, for the shear bond strength, compressive strength and diametral tensile strength. The abtained results were as follows: 1. Dentacolor resin system showed significant total color change(△E value:3.641 ±1.278) after 16 weeks and the range of total color change(△E) of that was between 0.5∼3.641 for 20 weeks. 2. The amount of water sorption of Dentacolor resin system for 1 week was 0.30±0.119mg/㎠, and the amount of mean water sorption was 0.36mg/㎠ for 20 weeks. 3. The amount of solubility of Dentacolor resin system for 1 week was 0.060 ±0.018mg/㎠, and the amount of mean water sorption was 0.044mg/㎠ for 20 weeks. 4. The shear bond strength between Dentacolor resin system and Neocast 4, Novopal 3, and Verabond were 21.029 ±3.743 MPa, 20.242 ±2.548 MPa, and 19.889±4.032 MPa and the differences of shear bond strength of Dentacolor resin system according the kinds of alloys were showed significantly(p<0.05). 5. The compressive strength of Dentacolor resin system was 116.15 ±23.02 MPa, and Diametral tensile strength of that was 48.59 ±5.95 MPa. 6. The microhardness value(V.H.N.) of Dentacolor resin system was 35.28 ±2.53 after specimens were made immediately, and that was 33.15 ±2.15 after 20 weeks. The results of microhardness value showed decrease as elapsed of time, but the differences of that were not significant as a function of time(p>0.05).

Gilbert 증후군에서 열량 제한 시험과 Phenobarbital 자극 시험의 의의(14예)

이헌영,채경훈,정재훈,강윤세,김연수,문희석,박기오,이엄석,김선문,김석현,성재규,이병석,이강욱 충남대학교 의학연구소 2003 충남의대잡지 Vol.30 No.2

Gilbert 증후군은 인구의 7%에서까지 나타날 수 있는 매우 흔한 증후군으로서 비진행성인 양성의 만성적 경과를 치하며, 간질환의 증상과 징후가 없는 경한 비포합형 고빌리루빈혈증이 특징인 일종의 체질적인 증상으로서 혈장 빌리루빈 농도에 대한 사춘기의 영향 때문에 10대와 20대에 자주 진단이 된다. 따라서 임상적인 중요성은 미약하지만 높은 빈도가 예상되는 점에 그 중요성이 부여되어야 할 것이다. 따라서 적정한 임상적 진단법으로 기왕에 소개된 열량제한 시험과 phenobarbital 유도 시험을 시행하고 이들의 진단적 가치를 알아보기 위하여 본 연구를 시행하였다. 1990년 7월부터 1999년 4월까지 충남대학교병원에 내원하여 HBsAg, IgG anti-HBc 및 anti-HCV가 음성이고, 간 초음파 스캔에서 이상이 없으며, 혈청 AST, ALT 및 AP가 정상인 비음주자에서 경한 비포합형 고빌리루빈혈증이 있는 14예의 환자들을 대상으로 ^(99m)Tc-DISID 스캔을 시행하였으며, 기저 치 총빌리루빈 및 포합형 빌리루빈 치를 측정한 다음에 하루에 400Kcal로 48시간동안 제한한 열량 제한 시험을 시행하였고, phenobarbital을 하루 60mg씩 5일간 투여한 후에도 각각 총빌리루빈과 포합형 빌리루빈 치를 검사하여 비포합형을 구하였다. 대상 환자들은 모두 14예로서 남자가 11예(78.6%)였고 여자가 3예(21.4%)여서 3.7:1로 남자에서 많았으며, 20대가 6예(42.9%), 30대가 역시 6예(42.9%) 및 40대가 2예(14.2%)로서 2,30대가 대부분(85.8%)이었다. 열량 제한 시험 후의 총빌리루빈 치, 비포합형 및 포합형 빌리루빈 치들은 평균 각각 5.5±2.7, 4.2±2.3 및 1.3±10mg/dL 로서, 시험 전 치들인 3.0±0.8, 2.2±0.8 및 0.7±0.4mg/dL 보다 유의하게(p=0.001, p=0.001, p=0.023) 상승하였다. 포합형 빌리루빈 치도 유의하게 상승하였으나 비포합형의 상승보다는 훨씬 낮아서 주로 비포합형이 증가하였다. phenobarbital 투여 중 설사가 발생하여 중단한 1예를 제외한 13예에서 열량 제한 시험 후에 상승하였던 총, 비포합형 및 포합형 빌리루빈 치가 phenobarbital 유도 시험후에는 2.0±1.1, 1.5±0.8 및 0.5±0.4mg/dL로서 열량 제한 시험 결과보다 유의하게 낮아졌고(p=0.00, p=0.000, p=0.001), 열량 제한 시험 전의 기초치들인 3.0±0.8, 2.2±0.8 및 0.7±0.4mg.dL 보다도 더욱 낮아졌으며 유의한 차이(p=0.001, p=0.02, p=0.005)를 나타내었다. 14예에서 시행한 ^(99m)-Tc DISIDA 스캔에서 9예(64.3%)가 정상이었고, 5예(35.7%)에서는 심장 및 신장으로의 간외 섭취가 3예였고, 60분까지 소장 배출이 없는 배설 지연 예와 담낭 수축 불량 예가 각각 1예 씩 발견되었다. Phenobarbital 투여시험에서 민감도가 열량제한시험에 비해 더 높았다(92.3%와 50.0%). Gilbert 증후군에서 1일 400 Kcal로 48시간의 열량제한 시험과 1일 60mg의 phenobarbital을 5일간 투여하는 유도 시험은 편리하고 유용한 임상적인 진단법으로 이용할 수 있다고 생각된다. 그러나 열량 제한 시험에서는 증가 기준의 통일이 필요하다고 유추되며 phenobarbital 유도 시험이 민감도가 더 높은 것으로 생각된다. Gilbert's syndrome is very frequent and benign chronic process characterized by mild, intermittent, unconjugated hyperbilirubinemia without any symptom and sign of liver disease. Previously intoduced caloric restriction test and phenobarbital stimulation test as two appropriate clinical tests had been examined and their diagnostic values were reevaluated. Fourteen patients with mild, persistent, unconjugated hyperbilirubinemia were included. Subsequently caloric restriction has been applicated by 400 Kcal/day for 48 hours and phenobarbital has been prescribed by 60 mg/day for 5 days. Therafter serum levels of total and direct bilirubin were measured. Most of the patients were third and fourth decade(85.8%) and male predominant. Each basal serum levels of total, indirect and direct bilirubin were 3.0±0.8, 2.2±0.8 and 0.7±0.4 mg/dL. After caloric restriction test, each levels were increased significantly to 5.5±2.7, 4.2±2.3 and 1.3±1.0 mg/dL(p=0.001, p=0.001, p=0.023). After phenobarbital stimulation test for 13 patients had been practiced, increased levels of each bilirubin after caloric restriction test were decreased significantly to 2.0±1.0, 1.5±0.8 and 0.5±0.4 mg/dL(p=0.000, p=0.000, p=0.001) and these levels were significantly lower than basal levels(p=0.001, p=0.02, p=0.005). The sensitivities of caloric restriction test were 85.7%, 50.0%, and 71.4%, 35.7%(1.0, 1.5 mg increase of total bilirubin and 1.0, 1.5 mg/dL increase of indirect bilirubin). The sensitivities of phenobarbital stimulation test were 93.2% and 92.3% at criteria of 1.5 mg/dL increase of total bilirubin and indirect bilirubin. On the diagnosis of Gilbert syndrome, caloric restriction test and phenobarbital stimulation test are convenient and useful diagnostic tools in clinical face. And also phenobarbital stimulation test has higher sensitivity than caloric restriction test. Furthermore, standardization of bilirubin increment would be necessary in caloric restriction test.

Tissue conditioner를 이용한 dynamic impression

정재현,장두익,김희중 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1

Recently, it is frequently accepted for impression of complete denture that alginate (irreversible hydrocolloid) is used for primary impression and special tray is used for secondary impression. But, most standard textbooks recognize the variation in academic opinion and each offers various materials and techniques for functional(secondary) impression. The variety of recommendations in standard textbooks suggests no one technique is satisfactory for all clinical situations. Especially, impression taking is more difficult in mandible that has many muscle movement than in maxilla. The possibilities of overcoming treatment difficulties of patients with advanced mandibular residual ridge resorption by means of a dynamic impression method was stressed in a previous article Numerous presentations of dynamic impression methods include those of Schrott, Momme, Skogsborg, Greene, Loos, Hromatka, and Matthews, At the beginning, this method was applied tentatively for special patients after variations of conventional method was failed. The results were encouraging and, eventually, the dynamic impression became the impressicn of choice in the treatment of patients with a questionable prognosis with conventional dentures. Recently, dynamic impression has been used for treatment of patients with extreme resorption of the mandibular residual ridge. The shape of the osseous structures in these patients offers little possibility of retention and stability of complete dentures. Furthermore, muscle attachments are located near the crest of the residual ridge and, consequently, the dislocating effect of the muscles on the denture is great. For these reasons, the range of muscle action, as well as spaces into which the denture can be extended without dislocation, must be accurately recorded in the impression. Such impressions can be made by means of dynamic method.

자기베어링 런아웃의 적응제어

김재실,배철용,이재환,안대균,최헌오 창원대학교 산업기술연구소 2001 産技硏論文集 Vol.15 No.-

자기베어링의 회전정밀도에 영향을 미치는 인자로 PWM 전력증폭기, 위치 센서 등과 같은 자기베어링 구성 장치의 동특성 및 정밀도, 시스템의 정확한 모델링, 제어기법, 런아웃 등이 있다. 본 연구에서는 능동 자기베어링을 제어하기 위해 자기베어링의 PWM 전력증폭기와 회전축을 모델링하고 이를 바탕으로 능동 자기베어링 제어를 위한 PID 제어기를 구성하였으며, 변위 센서의 부착위치 및 회전축의 진원도의 영향으로 발생하는 주기적인 런아웃 요소를 첨가하여 런아웃의 영향을 확인하였으며, 런아웃(Runout)에 의해 발생하는 에러(Error)를 효과적으로 제어하여 자기베어링의 제어 정밀도를 향상시키기 위한 방법으로 기본적인 PID 제어기에 최소평균자승(Least Mean Square, LMS) 알고리즘을 적용한 적응 피드포워드 제어기를 구성하여 자기베어링의 능동 제어에서 발생하는 주기적인 런아웃을 효과적으로 제어할 수 있음을 MATLAB을 통한 시뮬레이션을 통해 확인하였다.

유전자 알고리듬을 이용한 자동차용 미러 액튜에이터의 최적설계

김재실,김수태,최헌오 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

An automobile mirror actuator system is required for the compatibility of mirror moving angle and speed. This article provides the procedure of a genetic algorithm(GA) based optimization with finite element analysis for design of a mirror actuator considering design constraints, reduction ratio, moving angle, operating speed.