전 비경구적 영양요법시 휴지기(Resting period)설정의 의의

김홍진(Hong Jin Kim),김상운(Sang Woon Kim),박태준(Tae Joon Park),송선교(Sun Kyo Song),서보양(Bo Yang Suh),권굉보(Koing Bo Kwun),이석강(Suck Kang Lee) 대한외과학회 1987 Annals of Surgical Treatment and Research Vol.33 No.1

초음속 흡입구 블리드 출구 유동특성 연구

김보환(Bo-Hwan Kim),이경태(Kyung-Tae Lee),김해동(Hae-Dong Kim),유진선(Jin-Sun Yoo) 한국추진공학회 2018 한국추진공학회 학술대회논문집 Vol.2018 No.5

초음속 흡입구에 사용되는 블리드 출구의 유동특성을 알아보기 위해 30°와 15° 각도를 갖는 루버 형상에 대해 수치해석을 수행하였다. 본 논문에서는 plenum chamber의 압력비에 따른 유량비 데이터를 확인하였고, 전산유체해석을 위해 상용소프트웨어인 Fluent v18.0을 사용하였다. 해석결과, 루버 주변에 충격파와 팽창파 등의 복잡한 유동패턴을 확인하였으며, 15° 루버의 경우에서 이러한 물리적 현상들이 완화되는 것을 확인하였다. Numerical simulations of the flow through the louver structure with 30° and 15° angles were conducted to investigate the flow characteristics of the bleed exit louvers used in supersonic inlet. In this paper, the sonic flow coefficient according to the pressure ratio of the plenum chamber was confirmed, and the commercial software Fluent v18.0 was used for computational fluid dynamics analysis. As a result of the analysis, complex flow patterns such as shock and expansion wave were confirmed around the louvers, and it was confirmed that these physical phenomena were alleviated in the case of the 15° louvers.

간장 ( 肝臟 ) , 담도 ( 膽道 ) 및 췌장 ( 膵臟 ) : 단순 담낭 절제술 후 배액술의 필요성

김홍진(Hong Jin Kim),심민철(Min Chul Shim),권굉보(Koing Bo Kwun),노진우(Jin Woo Roh),김재황(Jae Hwang Kim) 대한소화기학회 1991 대한소화기학회지 Vol.23 No.3

N/A A retrospective review is undertaken to evaluate the effects of drainage versus nondrainage of the gallbladder bed after elective cholecystectomy. Ninety one charts of patients who underwent elective cholecystectomy without choledochotomy were reviewed. Patient selection was based upon following criteria: 1) No evidence of empyema, pericholecystic abscess or cholangitis 2) No bleeding or leakage of bile from the bed of the gallbladder after cholecystectomy 3) Lack of exploration of the common bile duct. Two groups were analyzed. Those who had postoperative drainage of the subhepatic space and those who didn't have drainage. The results are as follows. Postoperative length of hospital stay was longer in the drainage group (p<0.05). The average days of hospital stay were 7.75 (+- 1.20) in nondrainage group and 8.16 (+- 1.21) in drainage group. Maximum postoperative temperature elevation was higher in the drainage group (p<0.05). The average maximum postoperative temperature were 37.20 (+- 0.33)C in nondrainage group and 37.94 (+- 0.42)C in drainage group. There was no significant difference in the duration of the postoperative fever between the drainage and nondrainage group. The average druation of the postoperative fever were 1.91 (+- 1.44) days in the nondrainage group and 2.27 (+- 1.47) days in the drainage group. There was no significant difference in the dose of the postoperative analgesics between the drainage and nondrainage group. The average dose of the postoperative analgesics were 4.45 (+- l. 47) in the nondrainage group and 4.98 (+- 2.12) in the drainage group. There was no significant difference in the complication rate between the drainage and nondrainage group. It is concluded that routine drainage of the subhepatic space after elective cholecystectomy without choledochotomy is unnecessary and contributes to increased length of postoperative hospotal stay and a higher rate of patients discomfort.

저온 RTP-CVD에 의해 성장된 인화붕소(BP)의 물리적 특성

김파(Bo-Jin),악흔(Xin-Yue),후렐바타르 벌러르마(Khurelbaatar Bolormaa),김철주(Chul-Ju Kim) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6

Boron Phosphide (BP) films were deposited on Si(111) substrate at 450 ℃, by the reaction of B2H6 with PH3 using RTP-CVD. From the measurement of AES the films have B13P2 Stoichiometry. From the result of WDX, it is detected each Boron and Phosphorus. However, the oxygen atom is not inter-diffusion in BP. It is mean that BP can be uses as the protect material of PDP and that of solar cell.

보안성 향상을 위한 IoT 서비스 시스템 구현 및 평가

김진보(Jin-bo Kim),김미선(Mi-sun Kim),서재현(Jae-hyun Seo) 한국정보보호학회 2017 정보보호학회논문지 Vol.27 No.2

사물인터넷은 다양한 사물들로부터 발생되는 정보를 수집·공유·분석하여 사람들에게 유용한 정보 서비스를 제공하는 것을 의미한다. 본 논문은 사물인터넷 환경에서 발생하는 서비스 접근제어, 서비스 보안 기술 그리고 ID 관리 기술에 대한 서비스 영역에서의 보안 안전성을 향상시키는 방안을 제시한다. 서비스 보안의 안전성 향상을 위해 공개키 기반의 C&C(Certificate and Capability) 서비스 토큰 인증서를 설계하고 발급할 수 있는 서비스를 구현하였다. 또한 노드 디바이스로부터 수집된 데이터를 기반으로 리소스 서비스의 생성 시 이를 효율적으로 관리하고자 LCRS(Left Child-Right Sibling) 리소스 모델관리 방안과 서비스에 대한 접근제어를 위해 리소스 서비스 URI 보안 관리하는 IoT 서비스 시스템을 구현하였다. Internet of Things includes the whole process of collected information generated from a variety of objects, as well as analyzing and sharing it, and providing useful information services to people. This study seeks ways to improve security and safety in the areas of service security technology, ID management technology and service access control, all of which take place in the IoT environment. We have implemented the services that can design and issue C&C (Certificate and Capability) service token authentication, which is based on a public key, to improve the service security. In addition, we suggest LCRS (Left Child-Right Sibling) resource model management for the efficient control of resources when generating the resource services from the data collected from node devices. We also implemented an IoT services platform to manage URL security of the resource services and perform access control for services.

空間領域에서의 임펄스 雜音除去를 위한 變形된 스위칭 메디안 필터에 관한 연구

金波(Bo Jin),金南虎(Nam-Ho Kim) 제어로봇시스템학회 2006 제어로봇시스템학회 합동학술대회 논문집 Vol.2006 No.12

선회식 가압부상 공정을 이용한 음폐수 처리시 순환수량 변화에 따른 유기물 제거 특성에 관한 연구

김진보 ( Jin-bo Kim ),한영립 ( Young-rip Han ),하미림 ( Mi-rim Ha ),정병길 ( Byung-gil Jung ),최영익 ( Young-ik Choi ) 한국환경기술학회 2014 한국환경기술학회지 Vol.15 No.6

본 연구는 음폐수 처리공정 개선을 위해 음폐수처리장 생물반응조 전단에 유입되는 원수를 이용하여 선회식 가압부상공정을 적용하였으며, 운전시 반응조 내 순환유량을 조절하여 운전조건별 유기물제거 및 변화를 파악하고자 하였다. 선회식 가압부상공정의 경우 초기응집제 주입량 4.5 mL/L를 고정하여 유입유량 3.5 L/min에 동일하게 주입하고, 주입공기유량 1.2 L/min 및 운전압력 3.0 kgf/cm²으로 설정 후 공기유량(1.5, 2.0 및 2.5 L/min)을 조절하여 운전하였다. 연구결과 순환유량 2.5 L/min에서 유기물(BOD₅, COD_Cr, 및 TOC) 및 부유물질(SS)의 제거효율이 가장 높은 것으로 나타났으며, DOC(dissolved organic carbon) 농도를 분석한 결과 DOC/TOC 비율이 순환유량 2.5 L/min에서 0.82로 나타났다. 선회식 가압부상공정 적용 시 고농도 유기물 폐수내 포함된 입자상 유기물질인 POC(particulate organic carbon)의 효과적인 처리가 가능한 것으로 사료되며, 선택적인 제거에 의해 음폐수 처리 시 선회식 가압부상공정 후단에 운전되는 생물학적 처리공정의 효율을 향상시킬 수 있을 것으로 판단된다. The purpose of this research was to improve the treatment process of food wastewater from food waste recycling facilities. Applied a cyclonic-DAF(dissolved air flotation) process as pre-treatment to improve the efficiency of solid-liquid separation was considered. Also, aim of this study is to develop an effective operation of each unit processes and stable linked treatments from other treatment facilities through determination of optimal operating conditions with changing in air flow and pressure of the micro-bubble generator. Organic matter removal and other changed were researched by different operations. In cyclonic-DAF(dissolved air flotation) process, initial coagulation concentration, influent flow rate, influent air flow rate, and operation pressure were set as 4.5 mL/L, 3.5 L/min, 1.2 L/min and 3.0 kgf/cm², respectively. In recycling flow rate with 2.5 L/min, removal rates of dissolved organic matters(BOD₅, COD_Cr, TOC) and SS were the highest. In order to improve biological treatment process, DOC(dissolved organic carbon) was analyzed. And when recycling flow rate with 2.5 L/min, DOC/TOC was 0.82. It was considered that the cyclonic-DAF process was more possible for pre-treatment in order to improve the efficiency of solid-liquid separation, that is, POC(particulate organic carbon) than existing process. It could improve biological treatment process through decrease of suspended-solids.

간장 ( 肝臟 ) , 담도 ( 膽道 ) 및 췌장 ( 膵臟 ) : 약제에 의한 간장의 허혈 및 재관류 손상의 방지

김홍진(Hong Jin Kim),심민철(Min Chul Shim),권굉보(Koing Bo Kwun),박동일(Dong Il Park),노진우(Jin Woo Roh) 대한소화기학회 1991 대한소화기학회지 Vol.23 No.3

N/A Several drugs known to be vasodilators and/or membrane stabilizers were studied to evaluate whether these would have protective effects against experimental eschemia-reperfusion induced liver injury in rats. The aninmals were divided into six groups-control, treatment with pentoxifylline, aprotinin, FDP, verapamil, and sham operation. Drugs were administered systemically through IVC 5 minutes before induction of ischemia. The hepatic arterial and portal venous blood supply to the left lateral and median lobes of the liver was interrupted with an surgical clip for 90 minutes to induce hepatic ischemia, and after then the clip was removed for reperfusion. The arterial blood SGOT, SGPT, ALP, LDH, and hepatic MDA were measured before and 90 minutes after ischemia, and at the end of 60 minutes reperfusion. The control group showed sharp elevation of the all liver enzymes following both hepatic ischemia and reperfusion. However the treated groups with pentoxifylline, aprotinin, FDP, and verapamil demonstrated significantly lower level of liver enzymes compare with the values of the control group. Verapamil thought to be most effective in protection of liver from ischemia- reperfusion injury. The hepatic MDA l evel decreased during ischemia-reperfusion procedures, and showed no significant difference between control and treatment groups.

카프카의 소설 ‘변신’ 에서 나타난 ‘소외’ 개념과 낯설게 하기를 통한 서울 구의 취수장 재생방안

김파(Jin, Bo),구영민(Koo, Young-Min) 대한건축학회 2015 대한건축학회 학술발표대회 논문집 Vol.35 No.1

Complication of Intraoperative Radiation Therapy (IORT) in Gastric Cancer

김명세(Myung Se Kim),김성규(Sung Kyu Kim),송선교(Sung Kyo Song),김홍진(Hong Jin Kim),권굉보(Koing Bo Kwan),김흥대(Heung Dae Kim) 대한방사선종양학회 1992 Radiation Oncology Journal Vol.10 No.2

영남대학교 의료원 치료방사선과에서 1988년 6월 15일에 위함 환자의 수술중 방사선치료를 시작한 이래 1992년 8월 30일까지 총 58예에서 시도하여 그중 53예에서 IORT를 실시하였으며, 정기적인 추적검사에서 한명의 국소개발 환자도 보고되지 않고 있다. 출혈(3예), 장관폐쇄(3예), 폐혈증(2예), 골수기능저차(1예)를 포함한 총 9예(17%)의 합병증이 보고되었고, 이중 6예(13%)가 사망하였다. IORT(1500cGy), 외부 방사선치료 (-4500cGy)와 강한 항암제를 병합치료 하였음에도 불구하고 주등(수술과 항암제 치료)의 25.2%, 김등(수술 불가능한 환자에서 항암제 투여)의 18%, 리등(수술)의 18.5%, Kraming등(IORT 2800-3500cGy)의 35.3%에 비해 낮은 합병증을 보여 IORT가 위암의 치료에 공헌할 수 있음을 시사하였다. 그러나 비교적 높은 치사율(11.3%)은 더욱 세심한 수술수기 및 수술 후 환자의 치료가 필요하며 외부 방사선치료와 항암제치료의 적절한 시기 조절 및 치료선량의 가감이 필요할 것으로 생각된다. Local control is the important prognostic factor in cancer treatment because local control decrease the relative risk of metastatic spread and increase distant metastasis free survival. IORT is the modality which could increase local control without increasing complication, combined with curative operation. Eventhough we could achieve significant deacreased local failure by IORT and curative resection, it should not be committed as a main treatment modality without proving acceptable complications. Therapeutic Radiology Department of Yeungnam University Medical Center have tried 58 IORT from June 15, 1988 and performed 53 IORT in patients with gastric cancer. No local failure had been reported including interstinal obstrution, hemorrhage, sepsis, and bone marrow depression. These complications could be comparable to Jo's 25.2% (chemotherapy + operation), Kim's 18% (chemotherapy only in inoperable patients), because our treatment regimen is consisted of IORT (1500cGy), external irradiation (--4500cGy) and extensive chemotherapy (FAM, 5FU + MMC, BACOP). Our data encouraged us to re-inforce further IORT in stomach cancer treatment.