http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
대퇴직근 기능성 유리 피판술을 위한 신경 및 혈관에 대한 해부학적 고찰
한경진,이영길,김준용,한승환,이두형,조재호,Han, Kyoung-Jin,Lee, Young-Kil,Kim, Joon-Yong,Han, Seung-Hwan,Lee, Du-Hyoung,Cho, Jae-Ho 대한미세수술학회 2007 Archives of reconstructive microsurgery Vol.16 No.1
The purpose of this article to evaluate the availability of the rectus femoris flap in Korean subjects. Material and Methods is that Cadaveric dissections were done on 51 femoral triangles of 26 cadevers. We measured the length of the direct head of rectus femoris from anterior superior iliac spine to patella upper pole, ASIS to lateral border of femoral nerve, and entry point of femoral nerve and vessel branches to rectus. Usually, there were three terminal branches to rectus femoris from the femoral nerve. The entry point of the first branch was at the proximal $17.5{\sim}31.4%$ portion of the rectus femoris. The second and the third branch entered at the proximal $22.5{\sim}40.7%$ and $26.3{\sim}42.3%$, respectively. The vessel entry was at $20.2{\sim}37.3%$. The length from ASIS to femoral nerve was $3.5{\sim}8.5\;cm$. Among the 51 rectus femoris muscles, 44 had one nutrient artery, and 7 had 2 nutrient arteries. The nutrient artery originated from the descending branch of the lateral femoral circumflex artery in 18(40.9%) cases, directly from the lateral femoral circumflex artery in 8(18.0%) cases, and from proximal(6 cases, 13.6%) and distal(12 cases, 27.3%) portion of the deep femoral artery. The average length of the nutrient artery was 29.8 mm and the width was 2.14 mm. The point where it meets the main feeding artery of the rectus femoris was $9.0{\sim}15.0\;cm$ from the ASIS. In all cases, the main artery's entrance was proximal to the first nerve branch. Conclusion is that rectus femoris has available data for functional flap.
몰리브덴인산화물 촉매에 의한 메틸피라진의 가암모니아 산화반응
신채호,장태선,조득희,이동구,이영길 ( Chae Ho Shin,Tae Sun Chang,Deug Hee Cho,Dong Koo Lee,Young K . Lee ) 한국공업화학회 1997 공업화학 Vol.8 No.5
몰리브덴산암모늄염과 인산의 반응으로 P/Mo=0.6의 비율을 가진 몰리브덴인산화물을 제조하고 이를 촉매로 사용하여 메틸피라진의 가암모니아 산화반응에 대한 메틸피라진, 산소, 암모니아의 각각의 분압과 반응온도 등의 반응변수의 영향을 살펴보았다. 표준실험조건하의 반응에서 300시간까지의 촉매활성은 안정상태를 유지하였다. 안정화 상태에서의 메틸피라진의 가암모니아 산화반응 속도식은 -r=kP_MPP_NH3 °P_02^γ(γ=2.2;1.3≤P_02(kPa)≤4)으로 메틸피라진에 대해서는 1차, 암모니아에 대해서는 0차, 산소에 대해서는 분압 4kPa이하에서 2.2차로 나타났다. 623 K이하의 반응온도 하에서의 겉보기 활성화에너지는 29.6㎉/㏖이었다. 메틸피라진의 주생성물은 시아노피라진으로서 선택도는 전환율에 관계없이 항상 90%이상을 유지하였다. Molybdenum phosphate(P/Mo = 0.6) has been synthesized with ammonium molybdate and phosphoric acid under aqueous solution. The kinetics of the ammoxidation of methylpyrazine over molybdenum phosphate catalyst was investigated with the variation of reaction temperature and partial pressure of methylpyrazine, oxygen and ammonia, respectively at atmospheric pressure. The catalytic activity was constant for 300hrs operation under our experimental conditions. Under the steady-state condition, the rate equation of methylpyrazine was shown as -r=kP_MPP_NH3 °P_02^γ(γ=2.2;1.3≤P_02(kPa)≤4). The apparent activation energy was 29.6㎉/㏖ below 623K. The main product obtained in the ammoxidation of methylpyrazine is cyanopyrazine whose selectivity was kept always over 90% regardless of conversion.
하윤진(Yoon-Jin Ha),이영길(Young-Gill Lee),정광열(Kwang-Leol Jeong),조민태(Min-Tae Cho),강대선(Dae-Sun Kang) 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5
In this study, the flow characteristics around a vertical-axis wind turbine(VAWT) are investigated by numerical simulations. A vertical-axis wind turbine among existing articles is used as the objective model in the present research. The results of the numerical simulations are compared with the results of the model tests from published articles. Also, a plate is installed on the bottom of the vertical-axis wind turbine and found out about the influences of the bottom plate. By the bottom plate, the tip vortices are reduced and the flow characteristics are changed. The power coefficient of the wind turbine with bottom plate is increased by a maximum of 50%. Sizes of the wind turbine are determined for 1 kW power generation, and the sizes of them are compared with the other sizes of existing 1 kW class vertical-axis wind turbines. The projected area of the 1 kW wind turbine with bottom plate is reduced by a maximum of 30%. On the other hand, modal analyses are performed to find out the natural frequencies of he 1 kW wind turbine, and the resonance safety of the 1 kW wind turbine is estimated by the results of the modal analyses. The results of the present research could be used as one of the fundamental data to design a 1 kW class vertical-axis wind turbine.