우간동맥의 총간관 압박에 의한 이차성 간내결석 1예

김명환,이성구,민영일,권태원,안세현,이승규,민병철 ( Myung Hwan Kim,Sung Koo Lee,Young Il Min,Tae Won Kwon,Sei Hyun Ahn,Sung Gyu Lee,Pyung Chul Min ) 대한소화기학회 1992 대한소화기학회지 Vol.24 No.4

Right hepatic artery usually crosses the posterior part of common heaptic duct. but in our case, we present one case of the intrahepatic stones with compression of the common hepatic duct caused by overriding of the right hepatic artery. On ERCP, filling defect was noted at the common hepatic duct and intrahepatic duct could not be visualized. PTC shoed multiple stones in both hepatic lobes. Large filling defect was noted in the proximal portion of common hepatic duct and the stones were absent at the distal common bile duct. The final diagnosis was made at operation. The patient was successfully treated by dissection of adhesion between overriding right hepatic artery and common hepatic duct.

해상풍력 해저케이블 하역용 유압식 코일링 암 구조설계 및 해석

김명환,김동현,오민우,Kim, Myung-Hwan,Kim, Dong-Hyun,Oh, Min-Woo 한국전산구조공학회 2013 한국전산구조공학회논문집 Vol.26 No.1

Structural design and analysis of a coiling arm unloading machine for submarine cable have been originally conducted in this study. Three-dimensional CAD modeling process is practically applied for the structural design in detail. Finite element method(FEM) and multi-body dynamics(MBD) analyses are also used to verify the safety and required motions of the designed coiling arm structure. The effective moving functions of the designed coiling arm with respect to rotational and radial motions are achieved by adopting bearing-roller mechanical parts and hydraulic system. Critical design loading conditions due to its self weight, carrying cables, offshore wind, and hydraulic system over operation conditions are considered for the present structural analyses. In addition, possible inclined ground conditions for the installation of the designed coiling arm are also considered to verify overturn stability. The present hydraulic type coiling arm system is originally designed and developed in this study. The developed coiling arm has been installed at a harbor, successfully tested its operational functions, and finished practical unloading mission of the submarine cable.

총담관 정맥류 ( Choledochal Varix ) 1예

김명환,제수정,이성구,민영일,이문규,성규보,이승규,민병철 ( Myung Hwan Kim,Soo Jung Jae,Sung Koo Lee,Young Il Min,Moon Gyu Lee,Gyu Boo Sung,Sung Gyu Lee,Pyung Chul Min ) 대한소화기학회 1992 대한소화기학회지 Vol.24 No.3

Extrahepatic obstruction of the portal vein with resulting portal hypertension may cause extensive collateral circulation at the porta hepatis. These collateral veins may compress and narrow the common bile duct, sometimes causing obstructive jaundiee. We present a 31-year-old-male patient, in whom choledochal varix accompanied by intra-and extrahepatic stones were diagnased by Doppler ultrasonography, ERCP and angiography. ERCP demonstrated the irregular contour. of the common bile duct and multple intraluminal filling defects. We performed splenorenal shunt and then percutaneous transhepatic biliary drainage. All bile duct stones could be removed by percutaneous route.

담도 및 췌장 질환의 치료에 있어서 내시경적 비 담도 배액법의 유용성

김명환,정상식,이선영,이성구,민영일 ( Myung Hwan Kim,Sang Sick Jung,Sun Young Yi,Sung Koo Lee,Young Il Min ) 대한소화기학회 1992 대한소화기학회지 Vol.24 No.4

Nasobiliary catheter drainage was first introduced a decade ago. It provides drainage of the biliary system and facilitates interventional procedures of the biliary and pancreatic system, both for therapy and research purposes. 1) ENBD was successfully performed in 81 out of 84 (95.3%) patients with biliary and pancreatic disease 2) The indication of ENBD in our patients was for acute suppurative cholangitis (n=25), prevention of stone impaction after EST (n=22), gallstone pancreatitis (n =12), ESWL of bile duct stones (n=15), overt stone impaction (n=7), benign bile duct stricture (n=3), malignant bile duct stricture (n=15), drainage of pancreatic pseudocyst (n=1) and pancreatic duct stone (n=1). 3) All the patients, who received ENBD successfully, sihowed improvement of liver function and general condition. 4) The complication of ENBD was cholangitis in 3 patients and dislodgement of tube in another 3 patients. Inconclusion, we believe that nasobiliary catheter should be appled more frequently during endoscopic manipulation of the biliary and pancreatic system and that the technique of insertion should become an essential part of training in ERCP.

생강 삼투압 건조 시 물질이동 특성과 품질에 미치는 효과

김명환,Kim, Myung-Hwan 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.43 No.4

생강의 삼투압 건조 중 설탕용액의 농도와 온도 및 침지시간에 따른 내부 물질이동을 생강 내부의 수분손실, 설탕흡수, 몰랄농도 및 속도매개 변수로써 조사하였고 갈색화 반응정도를 평가하였으며 데치기와 삼투압건조를 각각 거친 후 열풍건조 시킨 것에 대하여 복원 시 텍스쳐를 비교하였다. 용액의 농도와 온도가 증가함에 따라서 수분손실, 설탕흡수, 몰랄농도 및 속도매개 변수가 증가하였으며, 용액농도와 온도에 관계없이 수분손실, 설탕흡수, 몰랄농도는 초기 3분간 침지과정에서 빠르게 이루어진 후 증가현상이 둔화되었다. $80^{\circ}C$의 60 Brix 설탕용액에서 18분간 침지하였을 때 40.05 g 수분손실/100 g생강으로 초기 수분함량 83.02%(wet basis) 기준으로 약 52%의 수분을 제거하는 효과를 갖는다. 속도매개 변수는 설탕용액의 농도 보다는 온도에 의한 변화가 컸다. 갈색화 정도는 설탕용액의 농도와 온도에 관계없이 15분간 침지시켰을 때 가장 낮은 O.D.값을 나타내었으며, 대조구(O.D.=0.132)와 비교하였을 때 $80^{\circ}C$에서 40 또는 50 Brix의 설탕용액에 15분간 침지시킨 것이 가장 낮은 값(O.D.=0.027)을 보였다. 데치기 공정을 시킨 것과 대조구를 열풍건조 시킨 다음 끓는 물에서 3분간 복원시킨 후의 관통힘은 차이가 나타나지 않았으나 삼투압 건조시킨 생강은 대조구 보다 $22{\sim}34%$ 적게 나타났다. Internal mass transfer during osmotic dehydration of gingers in sugar solution was examined as a function of concentration, temperature and immersion time of those solutions using moisture loss, sugar gain, molality and rate parameter. Influence of osmotic dehydration on browning reaction and texture properties of air dried rehydrated was also evaluated. Increasing the concentration and temperature of sugar solutions increased moisture loss, sugar gain, molality and rate parameter. Water loss and sugar gain were rapid in the first 3 min and then changed gentle slope. Moisture loss during osmotic dehydration using a sugar solution $(60\;Brix,\;80^{\circ}C)$ with 18 min immersion time was 40.05 g moisture/100 g wet ginger which was 52% reduction of initial moisture content in ginger (83.02%, wet basis). The changes of rate parameter were more affected by temperature than by concentration of sugar solution. Minimum browning degree (O.D.=0.027) was carried out by osmotic dehydration in sugar solution $(40\;or\;50\;Brix,\;80^{\circ}C)$ with 15 min immersion time compared to control (O.D.=0.132). Influence of osmotic dehydration on puncture forces of 3 min rehydrated ginger in boiling water were $22{\sim}34%$ of reduction, while blanching treatment had not affected compared to those of control.

내시경적 유두부 괄약근 절개술로 치유된 Gallstone Pancreatitis 1예

김명환,조원경,이미화,이성구,민영일 ( Myung Hwan Kim,Won Kyung Joh,Mi Hwa Lee,Sung Koo Lee,Young Il Min ) 대한소화기학회 1992 대한소화기학회지 Vol.24 No.4

A 70-year old man was admitted due to acute pancreatitis. On endoscopic retrograde cholangiogram, bulging ampullar was seen. Endascopic sphincterotomy (EST) with needletype papillotome was done and impacted stoine was then exposed. After removal of the stone, we inserted nasobiliary tube for drainage of infected bile. We present a case of gallstone pancreatitis with impacted stone treated by endoscopic sphincterotomy.

담도질환의 진단 및 치료에 있어 첨형 ( Needle Knife ) Papillotome을 이용한 내시경적 유두부 절개술의 유용성

김명환,이미화,이선영,정성훈,이성구,민영일 ( Myung Hwan Kim,Mi Hwa Lee,Sun Young Yi,Sung Hoon Jung,Sung Koo Lee,Young Il Min ) 대한소화기학회 1992 대한소화기학회지 Vol.24 No.6

Needle knife papillotomy was first introduced for impacted papillary stones. At present the use of needle knife papillotome has been extended to include attempted biliary access after failure of conventional techniques or initation of sphincterotomy in patients with Billroth II gastrectomy. During 3 years, we performed endoscopic sphincterotomy with needle knife papillotome in 45 patients. The indication for the use of needle knife papillotome was periampullary tumor (n=10), papillary impacted stone (n=7), Billroth II gastrectomy (n=6), difficult cannulation with normal- appearing papilla or papillitis (n=13), periampullary,diverticula (n=4), for precut (n=4) and for biopsy (n=1). Common bile duct access was successful after needle knife papillotomy in 40 (89%) out of 45 patients. Complications were duodenal perforation (n=2), cholangitis (n=2) and pancreatitis (n= 1), and they were managed successfully by medical treatment. In conclusion, it is thus clear that needle knife papillotomy is a helpful procedure with acceptable and not prohibitive risk. It may be used by experienced endoscopists only to increase the success rate of common bile duct access after failure of conventional method.

내시경 경비적 낭포 배액술 ( Endoscopic Nasocystic Drainage ) 로 치유된 췌장 거대 가성 낭포에 의한 상부 위장관 폐색증 1예

김명환,채제건,김형호,이선영,정성훈,이성구,민영일 ( Myung Hwan Kim,Jae Gun Chae,Hyung Hoh Kim,Sun Young Yi,Sung Hoon Jung,Sung Koo Lee,Young Il Min ) 대한소화기학회 1992 대한소화기학회지 Vol.24 No.5

A 40-year-old man was admitted due to vomiting and periumblical abdominal pain. He was diagnosed as chronic pancreatitis with pseudocyst, which compressed the duodenal bulb. Endoscopic cystoduodenostomy and nosocystic drainage were performed. As a result, pseudocyst was disappeared and obstruction was relieved. In conclusion, endoscopic cystoduodenostomy and nasocystic drainage will be a good alternative treatment to surgical or percutaneous drainage in the specific indications of a pseudocyst bulging into the duodenum or stomach.

도파로공진을 이용한 슬롯도파로 포화흡수체 반사기

김명환,김상인,Kim, Myung-Hwan,Kim, Sang-In 한국광학회 2011 한국광학회지 Vol.22 No.3

본 논문에서는 도파모드공진을 이용한 포화흡수체 반사기를 제안하였다. 포화흡수체로는 탄소나노튜브(CNT)를 사용하였다. 제안된 반사기는 CNT의 두께 변화 없이 modulation depth를 키울 수 있다는 장점이 있다. 제안하는 반사기의 fill factor(F)와 CNT의 두께변화에 따른 modulation depth, 대역폭, 포화되었을 때의 최대 반사율의 특징을 알아보았다. 제안된 반사기는 포화에너지를 줄일 수 있다는 장점이 있고, 100~200nm 얇은 CNT박막에서 50배정도 줄어드는 것을 확인 하였다.

Oddi 괄약근 운동 이상에 의한 반복성 췌장염 1예

김명환,이선영,이성구,민영일,김나영 ( Myung Hwan Kim,Sun Young Yi,Sung Koo Lee,Young Il Min,Na Young Kim ) 대한소화기학회 1992 대한소화기학회지 Vol.24 No.3

The cause of recurrent acute pancreatitis can be identified in the majority of patients. A small group of patients in whom an etiological association is not obvious is characterized as idiopathic recurrent pancreatitis. Recently dysfunction of Sphincter of Oddi is also suggested as the possible cause of idiopathic recurrent pancreatitis. We could diagnose a patient as dysfunction of sphincter of Oddi, who had manifested recurrent acute pancreatitis, by ERCP and sphincter of Oddi (SO) manometry. Manometric finding showed tachyoddia and the patient received eodoscopic sphincterotomy for treatment.