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반도체레이저 여기 세라믹 Nd:YAG 레이저에서 Q-스위칭 동작 최적화
신동준,김병태,김덕래,Shin, Dong-Joon,Kim, Byung-Tai,Kim, Duck-Lae 한국광학회 2008 한국광학회지 Vol.19 No.4
광섬유 연결 반도체레이저 여기 세라믹 Nd:YAG 레이저의 전기광학 Q-스위칭 출력 특성에 대해 연구하였다. 세라믹 Nd:YAG 레이저의 Q-스위칭은 여기원의 펄스폭 $1,000\;{\mu}s$, 출력 거울의 반사율 77% 및 지연시간 $985\;{\mu}s$에서 최적화되었다. 여기 에너지 17.9 mJ에서 0.35 mJ의 Q-스위칭된 출력 에너지와 약 4 ns의 펄스폭이 측정되어 1.9%의 출력 효율과 87.5 kW의 첨두 출력을 나타내었다. The output characteristics of a laser-diode pumped electrooptic Q-switched Nd:YAG ceramic laser were investigated. The output energy of a Q-switched Nd:YAG ceramic laser was optimized under an output coupler reflectivity of 77%, a laser-diode pulse width of $1,000\;{\mu}s$, and a delay time of $985\;{\mu}s$. The output energy of the Q-switched pulse was measured to be 0.35 mJ with a pulse width of 4 ns under a pump energy of 17.9 mJ. The output efficiency and the peak power were 1.9% and 87.5 kW, respectively.
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소절편 조직의 신속보고 체계에 대한 연구 -새로운 조직 고정액과 표본제작-
장영진 ( Young Chin Chang ),김덕래 ( Duck Lae Kim ),이기헌 ( Ki Hyun Lee ),서동환 ( Dong Hwan Suh ),유건부 ( Keon Boo You ) 대한임상검사과학회 1999 대한임상검사과학회지(KJCLS) Vol.31 No.2
Background : Generally and traditionally surgical specimens are fixed in 10% buffered formalin at room temperature. But when we used 10% buffered formalin for tissue fixatives, Toxic gas and vapors are take place in laboratory. by this toxic gas and vapors we can``t breathing and working for long time, and more, tissue fixation procedures require various amount of reagents and time depending on specimen size and type. 80, we introduced new equipment and fixatives such as Microwave and Histochoice-formalin. Microwave technology can be used to enhance specimen fixation by promoting chemical bonding and penetration of reagents into tissues. As such microwaves have been used to decrease the time of tissue fixation. This study was undertaken to develop a rapid universal fixation procedure using a low concentration of formalin and microwave technology. Design : Microwave oven(Pe1co, 3440, 700 W) was used for ftxation, and this made monitoring and controlling of time and feasible temperature. A various tissue specimens such as brain, colon, lung, spleen, stomach and uterus were fIxed in 3% formalin in Histochoice (Amresco, 8010n OH). The specimens were processed at a various condition of powers, times and temperature in the specimens tissue processor that have vacuum function (Pathentreⓡ, 8handon, U8A). A comparative study for 10% neutral buffered formalin with or without microwave irradiation was done. We performed H&E stain, histochemistry, immunohistochemistry, and insitu hybridization using the rapidly fixed tissue sections and compared with routinely processed tissue sections. Results : The optimal temperature and irradiation time for suitable ftxation was determined to be 60 =1=30C at 300 =1=30 sec at 700 W. The optimal concentration for tissue ftxatives is 3% Histochoice-formalin, which composed of Histochoice-tissue frxative ; 200 m1, Sodium acetate 3 gm, Sodium hydroxide 8 gm, Sodium phosphate monobasic 10.5 gm, Sodium phosphate dibasic 19.5 gm, 40% Formaline. The rapid ftxaton in 3 % formalin in Histochoice by microwave has similar quality and sensitiviψ in H&E, histochemistry, immunohistochemistry and in situ hybridization, compared with 10% buffered formalin with or without irradiation. Total consumed time for tissue process, focus on small specimen, is 1h 37 min. Conclusion : The ftxation time was signiftcantly reduced, and rapid pathological diagnosis could be performed. The sensitivity for immunohistochemistη was qualitatively increased. The environment of gross cutting room was comfortable due to the low formalin concentration. This new method was very useful tools with simple and rapid for tissue processing and pathologic diagnosis.
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삼각피판법과 밀라드씨법을 겸한 술식에 의한 선천 성구순열교정의 치험예
강동훈,전건수,김덕래 大韓成形外科學會 1987 Archives of Plastic Surgery Vol.14 No.1
There are several well established methods of primary cleftlip repair. Nowadays, traingular flap method and rotation advancement flap method are most widely used and regarded as a method of choice for the repair of cleft lip. However, in cases with severe vertical height difference between cleft side and non cleft side, both methods have some problems. With the Millard`s method for the repair in these cases, the incision of rotation flap must be extended to the philtral column on the noncleft side. This induces a break in the upper part of philtrum and it is not always easy to achieve smooth continuity of the Cupid`s bow. With the triangular flap method for the repair in these cases, large traingular flap has to be designed for lengthening. It produces fairly noticeable scar on the philtrum and divides the philtrum into two parts. Onizuka reported a method in which a small triangular flap was added together with that of Millard in 1966. Y, Nishimura modified Onizuka method in 1978. We performed a method in which triangular flap was put on the end of vermilion ridge with Millard`s method for the repair of cleft lip in cases which vertical hight differences are severe, usually more than 5mm in length in the infant. The result of this method is proved to be very successful and eliminates or reduces the problems previously described. ―Advantages of this method― 1. Permit lengthening even in severe forms without making large z-plasty scar in the philtrum. 2. Preserve philtral dimple and column better than triangular flap method. 3. Natural appearence of the upper part of philtrum. 4. Better correction of nasal deformties than triangular flap method. 5. Good muscle anatomic realignment. 6. In the Second stage operation of bilateral cleft lip, expected lengthening can be achieved without making protrusion of the lower margin of the prolabium.
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