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무궁화잎밤나방(Anomis mesogona)과 큰붉은잎밤나방(Anomis commoda)에 대한 Steinernema carpocapsae 포천 계통의 병원성
김형환,박형순,조윤진,이동운,추호렬,구관효,Kim Hyeong-Hwan,Park Hyung-Soon,Cho Yoon-Jin,Lee Dong-Woon,Choo Ho-Yul,Goo Kwan-Hyo 한국잔디학회 2005 한국잔디학회지 Vol.19 No.1
Pathogenicity of entomopathogenic nematde, Steinernema carpocapsae Pocheon strain (ScP) was evaluated against different larval stages(2nd, 3-4th and 5th) of Anomis commode and Anomis mesogona(Lepidoptera: Noctuidae) in petri dish and pot. The $LC_{50}$ values were increased in proportion to larval stage of A. commoda and A. mesogona. $LC_{50}$ value of ScP against 2nd instar of A. commoda and A. mesogona was 9.7 and 4.5, respectively. The 2nd instar of both species was also susceptible to ScP in pot test. That is, mortality of 2nd instar of A. commode and A. mesogona was higher representing $72.5\%\;and\;87.5\%$ 5 days later after treatment, respectively, when ScP was applied at the ,ate of 90,000 infective juveniles(Ijs) per $pot(=1\times10^9\;Ijs/ha)$. However, susceptibility was decreased from 3rd instar. Mortality of 5th instar of A. commoda and A. mesogona was $5.0\%\;and\;10.0\%$, respectively, at the rate of 90,000 Ijs/pot. When ScP was applied into pot including mixed larval stages from 2nd to 5th instar(10 larvae far 2nd instar, 10 larvae for 3rd - 4th instars, and 10 larvae for 5th instar) at the rate of 90,000 Ijs/pot, mortality of A. commoda and A. mesogona was $69.2\%\;and\;50.0\%$, respectively. 무궁화의 중요한 식엽성 해충인 무궁화잎밤나방(Anomis mesogona)과 큰붉은잎밤나방(Anomis commoda)에 대한 곤충병원성 선충 Steinernena carpocapsue 포천 계통(ScP)의 병원성을 실내 petri dish와 pot에서 령기별(2령, 3-4령, 5령)로 검정하였다. 큰붉은잎밤나방과 무궁화잎밤나방에 대한 반수치사농도$(LC_{50})$는 령기가 높아질수록 증가하여 선충에 대한 감수성이 감소하였는데, 2령충의 경우 각각 9.7과 4.5였다. 그리고 Pot에서도 ScP의 병원성은 령기에 따라 차이를 보였다. ScP는 큰붉은잎밤나방과 무궁화잎밤나방의 2령충에 대하여 가장 높은 치사율을 보였는데, 90,000마리/pot($=1\times10^9$ 마리/ha) 처리 시 각각 $72.5\%$와 $87.5\%$의 치사율을 보였다. 반면 3-4령충부터는 병원성이 감소하여 큰붉은잎밤나방과 무궁화잎밤나방 5령충에 대해서는 처리 5일 후, 90,000마리/pot 처리 시 각각 $5.0\%$와 $10.0\%$의 치사율만 나타내었다. Pot에 2령충과 3-4령충, 5령충을 각각 10마리씩 접종한 후, ScP를 90,000마리/pot 농도로 처리하였을 때, 큰붉은잎밤나방과 무궁화잎밤나방의 치사율은 각각 $69.2\%$와 $50.0\%$였다.
김형환,문성,은성배,임동선,Kim, Hyung-Hwan,Mun, Seong,Eun, Seong-Bae,im, Dong-Sun 한국정보처리학회 2000 정보처리논문지 Vol.7 No.s8
본 논문에서는 HLRP(High-reliable Light-weight Real-time Protocol)라는 실시간 통신 프로토콜에 대하여 기술한다. HLRP는 SSCS(Service Specific Convergence Sublayer)계층의 프로토콜로서 ATM 교환 시스템 내에서 동등계층간(peer-to-peer)의흐름제어, 전송 오류 복구 및 IPC를 위한 통신 링크 관리 등의 기능을 수행한다. 일반적으로 SSCS 프로토콜은 통신 링크를 설정하고 해제하는 과정을 필요로 하나 HLRP에서는 그 과정을 필요로 하지 않는 다. HLRP는 ATM 교환 시스템과 같은 전용시스템에서 처리기나 제어기와 같은 통신 객체들에 관한 정보를 시스템 구성 시에 알 수 있다는 점을 이용하여 항구가상연결 개념을 적용한 경량의 실시간 프로토콜이다. 또한 오류 복구 절차를 간소화하고 프로토콜의 상태 수를 줄임으로써 성능을 높였다. 실험을 통하여 HLRP가 경량임에도 불구하고 ATM 교환 시스템에서 요구하는 고 신뢰도를 만족함을 보였다.
백과엽(白果葉) 및 자오가(刺五加) 가미사물탕(加味四物湯)이 백서(白鼠)의 흉부대동맥(胸部大動脈) 혈관이완(血管弛緩)에 미치는 영향
김형환,박수연,강순아,김홍렬,안덕균,박성규,Kim Hyung-Hwan,Park Soo-Yeon,Kang Soon-Ah,Kim Hong-Yeoul,Ahn Duk-Kyun,Park Seong-Kyu 대한한의학방제학회 2003 大韓韓醫學方劑學會誌 Vol.11 No.2
We have examined the relaxational response to the water extract of Angelica gigas $N_{AKAI}$ (AG), Gingko biloba $L_{INNE}$ (GB), Acanthopanax senticosus $H_{ARMS}.$ (AP) and Augumented-Four-Substance Decoction (AG-FSD, GB-FSD, AP-FSD) in isolated thoracic aorta from sprague dawley(SD) rat. Rat thoracic aorta was investigated in vessel segments suspended for isometric tension recording by polygraph. Responses to AG, GB, AP and AG-FSD, GB-FSD, AP-FSD were investigated in vessels precontracted with 5-hydroxytryptamine(5-HT) were compared in vasodilation effect. We found that the thoracic aorta segments responded to AG, GB, AP and AG-FSD, GB-FSD, AP-FSD with a dose-dependent vasodilation. The 5-hydroxytryptamine induced contraction at $10^{-4}M$ were inhibited by 26.3%, 75.8%, 87.5% and 6.9%, 22.6%, 30.8% after addition of the 0.1 g/mL water extract of AG, GB, AP and AG-FSD, GB-FSD, AP-FSD. In conclusion, AG, GB, AP and AG-FSD, GB-FSD, AP-FSD induced relaxation in the isolated rat thoracic aorta were composed of dose-dependent relaxation. AP-FSD has very potent vasodilation.
오수수와 그 분획물이 흰쥐의 흉부대동맥과 복대동맥에 미치는 혈관이완효과
김형환 ( Hyung Hwan Kim ),조남훈 ( Nam Hoon Cho ),김완기 ( Wan Gi Kim ),이상준 ( Sang Jun Lee ),유익동 ( Ik Dong Yu ),안덕균 ( Duk Kyun Ahn ),최호영 ( Ho Young Choi ) 대한본초학회 2003 大韓本草學會誌 Vol.18 No.1
N/A Objectives : We have examined the relaxational response to the methanol extract of Osusu in isolated thoracic aorta and abdominal aorta from sprague dawley (SD) rat. Methods : Rat thoracic aorta and abdominal aorta were investigated in vessel segments suspended for isometric tension recording by polygraph. To compare the vasodilation effect, put Osusu extract and fractions into them which vessels were precontracted by 5-hydroxytryptamine (5-HT). Results : We found out this result ; the thoracic aorta segments were responded to Osusu with a dose-dependent and concentration-dependent vasorelaxation. The thoracic aorta and abdominal aorta segments were responded to Osusu with a dose-dependent vasodilation. The 5-HT induced vasocontraction at 10^-5M were vasodilated such as 96.8% in thoracic aorta with 30 mg/ml Osusu (Root). Addition of 10 mg/ml Osusu in thoracic aorta which was precontracted by the 5-HT at 10^-5M were come out differently 44.5% (fr. 1; 80% methanol fraction), 56.4% (fr. 2; hexane fraction), 7.2% (fr. 3; chloroform fraction), 16.8% (fr. 4; ethyl acetate fraction), 54.9% (fr. 5; butanol fraction) and 18.3% (fr. 6; water fraction). Osusu (1 mg/ml) in abdominal aorta which was precontracted by the 5-HT at 10^-5M were come out differently 87.1% (fr. 1; 80% methanol fracton), 76.9% (fr. 2; hexane fraction), 47.2% (fr. 3; chloroform fraction), 63.2% (fr. 4; ethyl acetate fraction), 25.2% (fr. 5; butanol fraction) and 34 9% (fr. 6; water fraction). Conclusion : Osusu methanol extract and fractions-induced relaxation in the isolated rat thoracic aorta and abdominal aorta were come out be dose-dependent relaxation.
김형환(Hyung Hwan Kim),문성(Seong Moon),은성배(Seong Bae Eun),임동선(Dong Sun Lim) 한국정보처리학회 2000 정보처리학회논문지 Vol.7 No.8
This paper describes the design and implementation of high-reliable light-weight real-time protocol(HLRP). The HLRP is one of the SSCS(Service Specific Convergence Sublayer) protocols. It supports peer-to-peer flow control, transmission error recovery, and the management of communication link for IPC(Inter Process Communication) in ATM Switching Systems. In general, SSCS protocols include the setup and release steps of communication link. However, SSCS protocol for IPC does not necessarily require those steps at the control plane of ATM protocol reference model. The information about the communicating objects such as processors and controllers are known at the time of system configuration stage. Therefore, we adopt permament virtual connection concept on the connections for IPC. There is no need for setup and release steps of communication link in IPC connection, and the link setup is simplified by the setup primitive for message delivery. We design a simplified protocol for implementing light-weight protocol by minimizing protocol states and by simplifying error recovery procedures. Due to HLRP, we could guarantee an assured data transfer service in ATM switching systems.