CCK 및 Glucagon 이 Pentagastrin 위액분비 자극에 미치는 영향

김종숙 ( Chong Sook Kim ),박실무 ( Sil Moo Park ),장세경 ( Sei Kyung Chang ),한상희 ( Sang Hee Han ) 대한내과학회 1982 대한내과학회지 Vol.25 No.11

연구논문 - 전기분과 : 전기투석에 의한 도금 폐수중의 Cu , Ni 의 농축 , 회수

김홍대,한만석,이충영,남종우 ( Hong Dae Kim,Man Seok Han,Chung Young Lee,Chong Woo Nam ) 한국공업화학회 1995 한국공업화학회 연구논문 초록집 Vol.1990 No.3

스키 자세 유사도 측정의 효율성 향상을 위한 Weight Point를 적용한 Pairwise testing 방법

김종한(Kim chong-han),박준형(Park jun-hyung),정승문(Jung seung-moon) 한국콘텐츠학회 2015 한국콘텐츠학회 종합학술대회 논문집 Vol.2015 No.5

개인용 컴퓨터상의 그래픽스 인터페이스 설계와 응용

김진한,경종민,Kim, Jin-Han,Kyung, Chong-Min 대한전자공학회 1989 전자공학회논문지 Vol. No.

한국과학기술원의 설계자동화연구실에서 IBM PC/AT 상에서 동작하도록 제작한 그래픽스 보드 "K"를 구동시키기 위하여 소프트웨어 인터페이스인 CGI-K를 TI사에서 제공한 C언어와 어셈블리 언어를 이용하여 작성하였다. CGI-K를 구성하는 디바이스 드라이버 루틴과 네모, 원, 현 및 호와 같은 그래픽스 프리미티브를 만드는 알고리듬을 제안하였으며, CGI-K는 EGA(enhanced graphics adapter)의 CGI보다 3배에서 10배 정도 빠른 속도를 갖는 것을 보였다. CGI-K를 이용하여 2차원 그래픽스 에디터인 GRIM과 3차원 모델링 프로그램인 IPCHE를 만들었으며, GRIM은 그래픽스 프리미티브를 이용하여 원하는 그림을 그릴 수 있도록 하였으며 IPCHE는 3차원 물체의 데이타를 받아들여 보이지 않는 면을 제거하고 명암과 원근 효과를 갖는 3차원 물체를 화면상에 그려 준다. A software interface called CGI-K including device driver routines and graphics primitives for the grphic board "K" was designed, implemented in the Design Automation Laboratory of KAIST and installed on IBM PC/AT, using assembly and C language supported by TMS 34010 grphics processor. Several algorithms generating the graphics primitives such as box, circle, pie chord are proposed. The drawing speed of CGI-K on the graphic board K was found out to be three to ten times faster than that of the EGA for several examples. A 2-D graphics editor called GRIM (graphics input and modification) and a 3-dimensional graphics renderer called IPCHE which can draw 3-D objects were developed as two major application programs running on CGI-K. The graphics primitives supported in GRIM include polygon, box, circle, and ace. The IPCHE receives a 3-D objects data file and displays the 3-D object on the screen with hidden surface removal, shading, and perspective scaling.

탄성 모멘텀을 이용한 Artificial Fish의 행동제어

김종한(Kim chong-han),김철민(Kim cheol-min),신민우(Shin min-woo),강임철(Kang im-cheol) 한국콘텐츠학회 2007 한국콘텐츠학회 종합학술대회 논문집 Vol.5 No.1

실시간 렌더링되는 3D 가상공간에서의 객체들은 일정한 조건을 고려한 이벤트 발생에 따라 상호작용이 가능하다. 그러나 이러한 상호작용을 통한 행동 표현을 위해서는 이벤트의 조건과 행동 패턴들이 거의 일대일 대응되어야 하기 때문에 다양한 행동패턴의 표현을 위해서는 그 만큼 고려되어야 하는 이벤트의 조건이 늘어나게 된다. 이는 전체 시스템의 복잡도를 증가시키는 문제점을 발생시킨다. 따라서 본 논문에서는 탄성모멘텀을 이용한 물리학적 접근 방법을 적용하여 Artificial Fish의 움직임을 보다 사실적으로 표현할 수 있고 하나의 회피 이벤트에 대해 다양한 행동 패턴 생성이 가능한 새로운 방법을 제시한다. Artificial Fish can interact with each other object according to event which was considered the constant condition in real time rendering cyber world. To present of behavior over this interaction, the behavior pattern must be a one-to-one correspondence with event condition. This is hard to considered numerous event condition for expressing various behavior patterns. It lead to a problem which push up the complexity metric of system. In this paper, we apply the physical method using elasticity force and explain the new method that represent more realistic behavior and create the behavior pattern with one evasion event.

정형 기법을 적용한 해양 NPC 모델 설계 및 구현

김종한 ( Kim Chong Han ),정승문 ( Jeong Seung Mun ),김병기 ( Kim Byung Ki ) 한국정보처리학회 2006 한국정보처리학회 학술대회논문집 Vol.13 No.2

NPC(Non playable Character)모델은 온라인 게임뿐만 아니라 가상공간 시스템 구축 시 빠질 수 없는 중요한 요소이다. 현재 가장 널리 사용되는 인공지능 처리방식의 하나인 FSM(Finite State Machine)은 NPC의 행동양식을 표현하기 위해 유한한 개수의 상태를 이용하는 알고리즘이다. 인공지능이 적용된 NPC 모델 설계시 정확한 명세는 구현 단계에서 발생되는 자원의 손실을 막아주고 요구명세에 따른 검증을 가능하게 한다. 본 논문에서는 해저가상공간 구축 시 발생되는 어류 객체의 행동패턴을 분석하여 속성을 정의하였으며, 환경변화에 따른 행동 특성의 상호관계를 설정하여 정형화하였다. 정의된 속성을 가진 NPC 모델을 FSM 알고리즘을 적용해 설계하고 구현한다. 설계된 NPC모델은 CTL기반의 모델체커인SMV(Symbolic Model Verification)를 통해 검증함으로써 설계에 대한 타당성을 입증하였다.

염화암모늄 전해질에 포함된 퀴논 레독스 활물질 조합을 이용한 수계 레독스 흐름 전지 성능 평가

이원미,정건용,권용재 한국화학공학회 2019 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.57 No.2

In this study, anthraquinone-2,7-disulfonic acid (2,7-AQDS) is used as negative active material and Tiron is used as positive active material for aqueous redox flow battery (RFB). In previous results that used the 2,7-AQDS and Tiron, sulfuric acid (H2SO4) was a supporting electrolyte. However, in this study, ammonium chloride (NH4Cl) is suggested as the electrolyte for the first time. By changing the supporting electrolyte from H2SO4 to NH4Cl, the cell voltage of RFB is improved from 0.76 V to 1.01 V. To investigate the effect of NH4Cl supporting electrolyte of the performance of RFB, the full-cell tests of RFB using 2,7-AQDS and Tiron that are dissolved in NH4Cl supporting electrolyte are carried out, while cut-off voltage range is a main parameter to determine their performance. When the cut-off voltage range is 0.2~1.6 V, the hydrogen evolution occurs during charging step. To address the side reaction effect, the cut-off voltage range is changed to 0.2~1.2 V. When the revised cut-off voltage range is used and the current density of 40 mA/cm2 is applied, hydrogen evolution is not observed and the optimal RFB shows the charge efficiency of 99% and discharge capacity of 3.3 Ah/L at 10cycle. 본 연구에서는 Anthraquinone-2,7-disulfonic acid (2,7-AQDS)와 Tiron을 수계 레독스 흐름 전지 음극 및 양극 활물질로 사용하며 기존의 황산 전해질 대신 중성인 염화암모늄 (NH4Cl)을 전해질로 도입하였다. 이렇게 전해질을 변경함으로써, 황산 전해질의 낮은 셀 전압(0.76 V)을 1.01 V까지 향상시킬수 있다. 성능 최적화를 위해 염화암모늄 전해질에0.1M로 활물질 농도를 맞춰 컷-오프 전압에 변화를 주며 완전지셀 성능을 평가하였다. 0.2~1.6 V 구간의 컷-오프 전압으로 40 mA/cm2하에서 20 사이클 동안 완전지셀을 테스트한 결과, 충전 동안 수소가 발생하였다. 이에 컷-오프 전압 조절로 충전 전압을 낮춰서 수소 발생을 제한하고자 0.2~1.2 V 구간으로 40 mA/cm2하에서 완전지셀 테스트를 진행하였다. 수소 발생은 없었으며, 전류 효율 99%, 방전 용량 3.3 Ah/L의 성능을 보였다.

대퇴골 전자간 골절 후 발생한 정맥혈전색전증과 표재대퇴동맥 패색증 -증례 보고-

김종관 ( Chong Kwan Kim ),안병우 ( Byung Woo Ahn ),김상민 ( Sang Min Kim ),강승훈 ( Seung Hoon Kang ),한계영 ( Kye Young Han ) 대한고관절학회 2013 Hip and Pelvis Vol.25 No.4

고관절 주위 골절은 노년층이 증가함에 따라 증가하고 있고 수상 및 수술 후 발생하는 정맥혈전색전증은 생명을 위협하는 치명적인 합병증을 유발할 수 있다. 본원에서는 과거력 상 폐색전증을 진단받았으나 추시 소실 되었던 환자에서 대퇴골 전자간 골절이 발생한 후 폐색전증이 재발 하였고 항응고제를 이용하여 치료 하였다. 수상 18일 후 고관절 반치환술과 대전자 고정을 위한 갈고리금속판을 이용한 고정술을 시행하였다. 수술 다음날 정맥 혈전색전증 및 표재 대퇴동맥 패색증이 발생하였고 이 증례를 경험하여 이를 문헌고찰과 함께 보고하고자 한다. As the elderly population increases, occurrence of hip fractures has shown a rapid increase, and posttraumatic and postoperative venous thromboembolism can lead to fatal complications. Current prophylactic management includes mechanical and chemical prophylaxis. A 76-year-oldfemale, who was lost to follow-up after diagnosis of pulmonary thromboembolism four years ago, was admitted to our emergency room for a right intertrochanteric fracture. Before the operation, the thromboembolism recurred and was treated with anticoagulation medication. Bipolar hemiarthroplasty and fixation of the greater trochanter with a hook plate were performed 18 days after the trauma. Superficial femoral artery obstruction and venous thromboembolism occurred on the first day after the operation.

성견치주질환 이환 발치와내 이식 치근과 발치와 치조골 재생에 대한 연구;I. 치근활택술의 영향

김종관,채중규,조규성,김진,한수부,최상묵,Kim, Chong-Kwan,Chai, Jung-Kiu,Cho, Kyoo-Sung,Kim, Jin,Han, Soo-Boo,Choi, Sang-Mook 대한치주과학회 1994 Journal of Periodontal & Implant Science Vol.24 No.1

The authors have transplanted periodontally involved roots which had been root planed into healthy and periodontally involved extraction sockets, and studied the root resorption patterns as well as its effect on new bone formation and wound healing. Alveolar bone around mandibular premolars of 6 adult dogs has been surgically removed, followed by ligation of orthodontic elastic wires for 8 weeks inducing chronic periodontal disease. After removing the crown portions, roots were extracted, and notches were made on the root surfaces discriminating healthy and periodontally involved areas using burs. Controls and experimental groups were divided as follows. Control I : Transplantation of periodontally involved root into healthy extraction sockets. Control II : Transplantation of periodontally involved root into diseased extraction sockets. Experimental group I : Transplantation of root planed roots into healthy extraction sockets. Experimental group II : Transplantation of root planed roots into diseased extraction sockets. Extraction sockets were sutured after transplantations, completely submerging the roots. Healing progress was histologically observed at 2nd, 8th, 12th, and 20th weeks, and the results were as follows ; 1. No inflammation or infection within the extraction sockets had been observed in all groups throughout the experimental period. 2. Reversal lines were observed at week 2 in all groups, clearly discriminating socket walls and new bone, and numerous blood vessels were observed in the new bone trabeculae. 3. Experimental groups showed markedly less root resorption compared to the controls at week 2, but as time progressed, severe resorptions were present in all groups. 4. Localized areas of new bone ankylosis were observed, and the rest of the areas showed collagen fiber insertion with new bone formation at its periphery. 5. No clear differences were found in healing and alveolar bone regeneration between healthy and diseased extraction sockets. 6. The amount of root resorption and ankylosis had increased up to week 8 and 12, showing ankylosis of new bone and the roots. However, no further increase in ankylosis was observed at week 20. 7. Most of the cementum on healthy roots was directly ankylosed to new bone at week, 2, and were gradually resorbed and replaced by new bone thereafter. These results appear to indicate that root planing may inhibit early root resorption of transplanted roots, but gradual replacement by alveolar bone and collagen fibers eventually occur. Condition of the roots or presence of disease in extraction sockets do not appear to make marked differences in alveolar bone regeneration process.

기계적 치태조절 보조제로서 C31G, Listerine, CPC의 초기 치주염에 대한 임상적 효과

김종관,박지숙,한광희,서종진,최성호,조규성,채중규,Kim, Chong-Kwan,Park, Ji-Sook,Han, Kwang-Hee,Suh, Jong-Jin,Choi, Seong-Ho,Cho, Kyoo-Sung,Chai, Jung-Kui 대한치주과학회 1998 Journal of Periodontal & Implant Science Vol.28 No.4

The purpose of this study was to access the clinical effects of C31G, Listerine and CPC on the earlyx periodontitis when they were used as a adjunctives to the mechanical plaque control. Each groups were composed of 12 patients and in three test groups, C31G(Exp 1 group), Listerine(Exp 2 group) and CPC mouthrinse(Exp 3 group) were used three times a day. and as a control, placebo solution was used. Plaque index, gingival index, bleeding index, pocket depth and loss of attachment were measured as clinical parameters. After scaling and oral hygiene instruction, root planing is done two weeks later. During the eight weeks of experimental period, mouth gargling is done by all groups. The changes in the clinical parameters of the all sites were monitored every two weeks. The results were as follows : 1. The plaque index showed a siginificant difference in Exp 1 group compared with test 2 group after 2 weeks use of mouth rinse(P<0.05). 2. The gingival index showed a significant difference in Exp 1 group compared with baseline value(P<0.05) but there was no significant difference between the groups after 2 weeks use of mouthrinse (P<0.05). 3. The plaque index, gingival index and bleeding index showed a significant difference in all groups compared with baseline value after 4 weeks of root planing and mouthrinse use(P<0.05). but there was no significant difference between the groups(P<0.05). 4. Periodontal pocket depth showed a significant difference in all groups compared with baseline value after 4 weeks of root planing and mouthrinse use(P<0.05). and there was significant difference between the Exp 1 group and control group(P<0.05). 5. Loss of attachment showed a significant difference in all Exp groups compared with baseline value after 4 weeks of root planing and mouthrinse use(P<0.05). and there was significant difference between the Exp 1 group and control group(P<0.05). The results suggest that C31G, Listerine and CPC were effective for early periodontitis as a adjunctive to mechanical plaqe control.