Poster Session : PS 0831 ; Upper GI Tract : Clinical Factors to Predict Angiographically Detectable Non-Variceal Upper Gastrointestinal Bleeding in Patients Refractory to Endoscopic Treatment

( Tae Hwan Ha ),( Tae Hoon Oh ),( Sung In Yu ),( Min Kim ),( Jong Wook Kim ),( Won Ki Bae ),( Jae Hyung Kim ),( Seung Suk Baek ),( Mi Jin Ryu ),( Ye Na Choi ),( Ji Young Park ),( Eileen L Yoon ),( Tae 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: Non-variceal upper GI bleeding (NVUGIB) is a common medical problem that has signifi cant association with morbidity and mortality. Angiographic detection and subsequent transarterial embolization (TAE) is a primary treatment option when medical and endoscopic treatments fail. We investigated clinical factors that could affect the success of the angiographic detection and prognosis after TAE in patients with NVUGIB refractory to endoscopic therapy. Methods: A retrospective analysis of the clinical data was done in patients with failed endoscopic treatment who underwent angiography for the treatment of acute NVUGIB between May 2002 and May 2013. Patients were divided into detection or non-detection groups according to the presence of bleeding stigmata in angiographic fi nding. Rebleeding defi ned as subsequent bleeding event within 7 days and mortality within 30days were analyzed as outcome parameters after TAE following detection in angiography. Results: A total 45 patients 37 (male, mean age, 65.9±14.9 years) were analyzed and classifi ed as a detection group (n=25, 55.5%) and non-detection group (n=20, 44.6%). Peptic ulcers were the most common cause of refractory NVUGIB. Larger transfusion amount (5.7±3.9 unit vs. 3.5±2.8 unit; P=0.03), prolonged aPTT level (34.2±17.3 sec vs. 21.8±13.8 sec; P=0.01) and short time interval between last endoscopy and angiography (17.5±25.9 hours vs. 34.3±59.5 hours; P=0.04) were found to be signifi cant factors for predicting angiographic detection. TAE was performed in all patients detected in angiography. Rebleeding (44%) was significantly associated with higher Rockall score (8.3±1.5 vs. 6.6±2.4; P=0.046) and mortality (12%) was signifi cantly associated with higher Rockall score (9.3±0.6 vs. 7.1±2.2; P=0.002) and higher level of BUN (55.3±47.4 vs. 27.6±17.4; P=0.01). Conclusions: Clinical characteristics associated with angiographic detection in patients with NVUGIB refractory to endoscopic therapy were severe bleeding, bleeding tendency and early angiographic intervention. The Rockall score is useful parameter for predicting rebleeding and mortality after TAE.

분말사출성형을 통해 제조된 17-4 PH STS의 인장특성에 미치는 초기 충진율과 열린 기공의 영향

하태권,성환진 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

Powder injection molding (PIM) makes use of the shaping advantage of injection molding and is applicable to metals and ceramics. PIM delivers structural materials in a shaping technology, previously restricted to polymers. In this study, the 17-4 PH stainless steel powders with average diameters of 6-14 μm were injection-molded into flat tensile specimens. Sintering of the compacts was carried out at the various temperatures ranging from 1350oC for Ih. In the case of the compacts made with 10-μm powder, sintering temperature was taken from 200-1350oC to investigate the effect of relative density on the tensile properties.

고견실성을 갖는 Servo 制御器의 設計

河泓坤,高泰彦,朴斗煥 東義大學校産業技術開發硏究所 1992 産業技術硏究誌 Vol.6 No.-

In this paper, the method of a design on a servo-controller with high stiffness free from change of load and influence of disturbance is proposed. A new controller is derived from adopting input side and output side detecting signals of the oscillatory element, which are processed through an each element being its relative degree equal to zero and are combined to generate a feedback information. By using the controller a Servo-Control System with a velocity and a accelaration control loop is organized and comes to show load insensitivity.

소아 혈중 연농도에 관한 조사

이용환,이덕희,김진하,박인근,한태영,장세한 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.1

지리적 위치에 따라 소아들에 있어서 혈중 연농도에 차이가 있는지의 여부와 소아들의 혈중 연농도의 참고치 계산을 위한 기초자료를 얻기 위하여 6-8세의 도심지역 거주 소아 102명과 교외지역 거주 86명, 총 188명을 대상으로 조사하여 다음과 같은 결과를 얻었다. 1. 전체 소아들의 평균혈중 연농도는 산술평균이 7.24, 기하평균이 6.92 ㎍/100㎖이었으며 남자가 여자보다 통계적으로 유의하게 더 높았다(p<0.05). 2. 도심지역과 교외지역 거주 소아들의 혈중 연농도는 도심지역거주 소아가 남, 녀 모두에서 교외지역 거주 소아보다 통계적으로 유의하게 더 높았다(p<0.05). 3. 혈중 연농도에 따른 분포에서는 <5 ㎍/100㎖군에 조사대상자 188명의 17.02%가 분포되었고 도심지역(5.88%)보다 교외지역(30.23%)에서 더 많은 분포를 보였으며, 10 ㎍/100㎖이상 군에는 전체 소아의 12.23%가 분포하고 있었으며, 도심지역(20.59%)이 교외지역(2.33%)보다 더 많이 분포하고 있었다. 이상의 결과에서 볼 때 도심지역 거주 소아들에 대한 연폭로의 관리대책이 시급히 마련되어야 할 것으로 판단된다. The authors conducted this study to evaluate some differences in blood lead levels between inner-city and suburban children and obtain the basic data of the reference value of the blood lead concentrations in children. The subjects were composed of 102 children residing in inner-city and 86 children in suburban. Their age range were 6 to 8 years old and the obtained results were as follows; 1. The arithmetic means of the blood lead level in male and female, male, and female children were 7.24, 7.40, 7.08 ㎍/100㎖, and geometric means were 6.92, 7.08, 6.76㎍/100㎖, respectively. 2. The children residing in inner-city had the higher blood lead levels both male and female than suburban children with statistical significance(p<0.05) 3. Seventeen percent of the total subjects had lead concentrations < 5 ㎍/100㎖, and 5.88% of inner-city children and 30.23% of suburban children had this lead values. But in ≥10㎍/100㎖ group, the inner-city children(20.39%) were more distributed than suburban children(2.33%), and 12.33% of total subjects had this lead values.

슬롯후드 입구 균일류 형성 조건

김환태,김태형,하현철,김은아 경성대학교 환경문제연구소 2000 環境硏報 Vol.10 No.1

Slot hoods are most commonly used to provide uniform exhaust air flow and an adequate capture velocity over finite length of contaminant generation, e.g. an open surface tank or over the face of a large hood such as a side-draft design. The function of the slot is solely to provide uniform air distribution. Industrial Ventilation Manual edited by ACGIH (American Conference of Governmental Industrial Hygienists) recommended the conditions to obtain uniform air distribution . slot velocity higher than 10m/s and take-off angle larger than 45 degree. But, in reality, it might not be an easy task to satisfy the conditions for uniform air distribution. By using CFD (Computational Fluid Dynamics), the 81 cases (3 aspect ratios x 3 mean slot velocities x 3 take-off angles x 3 duct velocities) were thus simulated and the coefficients of variance were computed to compare the uniformity of slot face velocities. Generally speaking, either aspect ratio or duct velocity do not affect the uniformity a lot while both slot velocity and take-off angle play a crucial role in forming uniform air distribution.

電磁 Actuator에서 等價線形化法에 의한 Dither 效果

高泰彦,河泓坤,朴斗煥,李泰基 東義大學校 産業技術開發硏究所 1992 産業技術硏究誌 Vol.6 No.-

In this paper, the electromagnetic actuator is designed and constructad in a solenoid type. Then this is used for detecting the displacement of a position control system. A compensating method-the sinusoidal signal is supllied to the input terminal of a power amplifier by an external generator for reducing non-linear response in a position control system is proposed. By method which vary the amplitude and frequency in sinusoidal signal, we can verify the usefulness of this method in obtaining the best characteristics of position response in the position control system using the electromagnetic actuator.

하악 무치악 인공치아매식술시 하치조신경 전위술

최의환,하정완,김수관,정태영,김수흥 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.3

Modified surgical technique for transposition of the inferior alveolar nerve followed by immediate placement of endosseous implants in mandibles with moderate to severe atrophy are presented. Five transpositions of the inferior alveolar nerve together with the installation of 10 implants were performed in four patients. The mean postoperative follow-up time was 17 months, with a range of 8 to 20 months. All implants with functioning pontics remained stable, with no mobility or symptoms of pain and infection during the follow-up period. Neurosensory evaluation was performed using the two-point discrimination test. Two patients had objective neurosensory dysfunction at postoperative, but all the nerve function were reported as normal by the patients 4 months postoperatively.

밤나무 耐寒性品種 選拔에 관한 연구

李麗夏,趙台煥,洪性珏 건국대학교 1976 學術誌 Vol.20 No.2

32 cultivars of chestnut were collected at the Kyunggido Forest Experimental Station, Oh-San, Kyunggido, Korea on November and December, 1976. The freezing resistance of winter bud, cambium and xylem parenchyma of the cultivars was measured to select out freezing resistant cultivars under the condition of early winter in Korea. The winter bud showed lowest freezing resistance among tissue parts. The xylen parenchyma attained relatively higher freezing resistance than the cambium did. On the basis of the freezing resistance of winter bud eleven cultivars which showed relatively high freezing resistance were selected among 32 cultivars of chestnuts. Again on the basis of the freezing resistance of cambium which is often one of the critical factors in winter damage, another eleven freezing resistant cultivars were selected. The eight cultivars which showed both freezing resistance of winter bud and cambium were chosen. These were in order from highest to lowest selected freezing resistant cultivars, wild chinese chest nut, Dan-Taeck, OK-Kwang, Bong-Eeh, Chuk-Pa, Da-Ap, Mahn-Juk, Ahn-Goon.

진행성 골화성 섬유 이형성증의 1예

임태영,조영신,정춘해,박유환,하상호,유재원 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.1

진행성 골화성 섬유 이형성증은 2 백만명 중에 1명 발생하는 매우 드문 유전질환이다. 저자들은 2차례의 외상후 심해진 진행성 섬유 이형성증환자에서 최근 다시 발생된 외상후 생긴 병변부위에 biphosphonate와 steroid 투여로 최근수상부위의 근육 골화와 경화를 현저한 호전을 보였으나, 기존의 골화가 이미 진행된 병변에서는 잘 반응하지 않음을 경험하였기에 문헌고찰과 함께 보고하는 바이다. Fibrodysplasia ossificans progressiva(FOP) is an extremely rare hereditary disorder characterised by progressive heterotopic ossification of the soft tissue. The resulting progressive immobilization of the limbs, jaw and chest wall generally leads to severe disability. We present an 20-rear-old man with advanced FOP. He had two operative interventions by prior traffic accident and recent biopsy. It resulted abnormal ossification. Treatment for this disorder is avoidance of exacerbating factors and medical strategies is biphosphonate and steroid. We observed the course of ossification and muscle atrophy during biphosphonate and steroid therapy in advanced FOP.

光彈性 및 有限要素法에 依한 Dove-tail Notoh의 應力集中에 關한 硏究

崔圭夏,趙熙燦,安台煥 충주대학교 1990 한국교통대학교 논문집 Vol.24 No.-

When a load is put on the parts of the rapidly changing section area like in notch, fillet, keyway, screwthread etc, there may occur some stress concentration, crack and fracture in the structures of machines, buildings, bridges, ships, aircrafts, industrial plant machines, atomic power plant machines and the machines for civil engineering architecture or agriculture. Many researchers such as Neuber, Frocht, Vicentini, Flynn etc. have tried to find out the cause of fracture by photoelastic experiments. When Tuner settled the aircraft structure analysis by finite element method in 1956. Agyris, Ritz, C.A. Felippa, J.T. Oden, Zienkiewicz etc. extended the finite element method to wide applicaton to hydrodynamics, electric field, thermal transmission, underground water, soil, atomic technology, the ground, biotechnics, and even to the stress concentration problem which is one of the machine design field. There are some struchural analysis methods of the strength of materials, photelastic and the finite element method. They have the same object for design of strength and stiffness, but each method and priciple is very different. In this paper I studied the stress concentration and the stress distribution on dove-tail notch by photoelastic and finite element method and tried to show the relasation of stress concentration.