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점막하 종양으로 오인된 우측 대동맥궁과 동반된 Kommerell 게실에 의한 식도압박 1예
조영직,금보라,김연호,공휘,김진남,김용식,진윤태,전훈재,엄순호,김창덕,유호상,현진해 대한소화기내시경학회 2008 Clinical Endoscopy Vol.36 No.2
A right-sided aortic arch and Kommerell’s diverticulum, remnants of the left dorsal aortic arch in the circulation of the embryo, are uncommon congenital defects of the aorta. They may be asymptomatic in most cases, but symptoms are manifested by compressing mediastinal structures or are related to congenital heart anomalies. If aneurismal dilatation of the diverticulum presents with rupture, it is lethal. We report a case of esophageal compression by a right-sided aortic arch and Kommerell’s diverticulum that mimicked an esophageal submucosal tumor in a patient who complained of symptoms during the past ten years of food retention in the upper thorax when a bolus of food was ingested. 우측 대동맥궁과 태생기의 좌측 배부 대동맥 잔유물인 Kommerell 게실은 드물게 발견되는 선천성 심혈관 기형이다. 대부분의 경우 증상이 없으나, 종격동 구조물을 압박하거나 선천성 심장기형이 동반되면 증상이 발현된다. 때로는 동맥류 파열로 사망할 수도 있다. 저자들은 10년간 큰 음식 덩어리 연하시 상부 흉골부의 경미한 음식물 정체감을 호소한 환자에서 식도의 점막하종양으로 오인하였던 우측 대동맥궁과 동반된 Kommerell 게실에 의한 식도압박 1예를 경험하여 보고한다.
조영직,전훈재,박동규,김윤배,고동욱,정록선,송치욱,엄순호,김창덕,류호상,현진해,신봉경,김인선 대한내과학회 2002 대한내과학회지 Vol.62 No.5
Dedifferentiated liposarcoma occurs in less than 10% of all liposarcomas and is found most often in the retroperitoneum and extremities. Although cases of the primary dedifferentiated liposarcoma have been sporadically reported internationally, only one case with 8×4.5×4 ㎝ size originated from spermatic cord and one case with 10×7×5 ㎝ size in right gluteal region have been reported in Korea, but not in retroperitoneum. We report one case of the primary giant dedifferentiated liposarcoma occurred in retroperitoneum with 32×22×20 ㎝ size and 4,250 g weight. A 56-year old man was admitted due to the weight loss and diffuse abdominal pain. The abdominal computed tomography showed that a round huge mass was pressing the surrounding structures and showed delayed enhancement. Surgical excision was carried out. Histologically the tumor was composed of well differentiated liposarcomatous area and malignant fibrous histiocytoma-like dedifferentiated area. The patient refused further treatment and now he is undergoing the follow-up.
조영직,김일혁 중앙대학교 약학연구소 1991 약학 논총 Vol.5 No.-
Gyegy-Tang has been known to be effective in the treatment of common cold, neuralgia, rheumatism, headache, and abdominal pain etc., in the chinese medicine. This studies were undertaken to evaluate the anti-inflammatory, analgesic and antipyretic activities by concurrent administrations of Gyegy-Tang extract and acetaminophen. The followings were obtained as results ; 1. On the paw edema induced by 1% carrageenin in rats, as a model symptom of acute inflammation, the combined oral administrations of Gyegy-Tang extract at a oral dose of 100㎎/㎏ was shown significant effectiveness in 4 hours respectively. in case of chronic inflammation induced by Freund's complete adjuvant, the combined administration of Gyegy-Tang extract at a oral dose of 200㎎/㎏ with acetaminophen at a oral dose of 200㎎/㎏ were remarkably exhibited anti-inflammatory activities in preventive and therapeutic effects. 2. Analgesic activities were examined on the writhing method in mice. The combined oral administration of Gyegy-Tang extract with acetaminophen by following doses ; 100㎎/㎏+200㎎/㎏, 200㎎/㎏+200㎎/㎏, the suppression rates were shown 92.67%, 93.72%, respectively. 3. The inhibitory activities of vascular permeability were studied on leakage of dye into ileum. The combined oral administration of Gyegy-Tang extact 100㎎/㎏ with acetaminophen 100㎎/㎏ was markedly suppressed leakage of dye as 47.89% which is nealy normal value. 4. Anti-pyretic activities were studied on the febrile rat induced by Typhoid vaccine. The combined oral administration of Gyegy-Tang extract 100㎎/㎏ with acetaminophen 200㎎/㎏ was suppressed 0.5℃ more than basal temperature.
조영직(Young-Jik Jo),송학관(Xueguan Song),김세훈(Se-Hun Kim),강정호(Jung-Ho Kang),박영철(Young-Chul Park) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.6
Shape memory alloy (SMA)has been used to improve the tensile strength of composite materials. Because it produces compressive residual stress in the matrix by using its shape memory effect. In order to fabricate a shape memory alloy composite, TiNi alloy and A12024, Al606l were used as reinforcing material and matrix, respectively. In this study, TiNi/A12024 and TiNi/Al606l shape memory alloy composites were made by the hot press method. The fatigue limit of a shape memory alloy composite determined the volume ratio and reduction ratio. The probabilistic stress-life curve (P-S-N curve) about the shape memory alloy composite makes up using statistical method.
열해석을 이용한 Butterfly Valve의 초저온환경에서의 구조안전성 평가
조영직(Young-Jik Jo),박한석(Han-Seok Park),김세훈(Se-Hun Kim),강정호(Jung-Ho Kang),박영철(Young-Chul Park) 한국기계가공학회 2008 한국기계가공학회 춘추계학술대회 논문집 Vol.2008 No.-
A cryogenic butterfly valve is used to transfer the liquefied natural gas (LNG) which temperature is -162 ℃. This valve is core part in the piping system using LNG. This paper performed coupling analysis using FEM to evaluate safety of cryogenic butterfly valve. Flow analysis is calculated numerically the CAE and CFD methods are useful to predict the thermal matter and the inner flow field of the valve. Thermal analysis and structural analysis used ANSYS Workbench.
조영직(Young-Jik Jo),전언찬(Eeon-chan Jeon),강정호(Jung-ho Kang) 한국기계가공학회 2008 한국기계가공학회지 Vol.7 No.4
Independent suspension axle and final reduction gear for special-purpose vehicles such as a armored vehicles are almost imported in Germany etc. so, developing them is necessary to save cost. In severe condition (open fields, water surface driving, obstacle pass), special-purpose vehicles must work well. Drop box, axle and final reduction gear performed static analysis. We know that is possible weight reduction. The purpose of this paper is to find out the optimal shape of final reduction gear's case by means of response surface methodology. The response surface method is the statistical method which can be applied to the non-sensitivity based optimization. The response surface which is constructed by the least square method contains only the polynomial terms so that the global maximum and minimum points are easily obtained.
TiNi/Al6061-T6과 TiNi/Al2024-T4 형상기억복합재료에 대한 피로강도기준의 비교
조영직(Young-Jik Jo),박영철(Young-Chul Park) 대한기계학회 2009 大韓機械學會論文集A Vol.33 No.2
This study produced a design curve and fatigue limit for a variation in volume ratio and reduction ratio of TiNi/Al composites. In many cases, stress-life curve does not indicate fatigue limit, so it was presented by probabilistic-stress-life curve. Goodman diagram was used to analyze the fatigue strength of materials with a finite life determined by repeated load and the fatigue strength of endurance limit with an infinite life. The fatigue experiment was conducted using the scenk-type plane bending specimen in same shape. The result of the fatigue test, which had been conducted under consistent stress amplitude, was examined. (ⅰ) The optimal condition for TiNi/Al in accordance with hot pressing (ⅱ) Impacts of fatigue limit caused by a variation in reduction ratio and volume ratio of TiNi/Al composites (ⅲ) Probability distribution for fatigue limit of TiNi/Al2024 and TiNi/Al6061.