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CdS, CdSe, ZnS 및 ZnSe 미세결정을 이용한 filter용 유리의 광흡수특성
신용태,윤수인 한국광학회 1992 한국광학회지 Vol.3 No.1
본 연구에서는 CdS, CdSe, ZnS, ZnSe 반도체를 첨가한 SK-16 유리와 ZK-1 유리를 직접 제작하고 열처리하여 유리속에 반도체의 미세결정을 생성시켜 착색유리를 만들고 sharp-cut용 광학 filter로써의 특성을 조사하였다. CdS, CdSe, ZnS 및 ZnSe 반도체를 첨가한 SK-16유리는 열처리돈도를 달리하였을 경우 광흡수단을 변화시킬 수 있는 범위가 30nm정도로 아주 좁았다. 그러나 $CdS_{1-x}Se_x$를 첨가한 SK-16 유리는 x값을 변화시키면서 열처리 함으로써 광흡수단을 ~130nm범위에서 변화시킬 수 있었고 광흡수계수도 높아 sharp-cut용 광학 filter용으로 좋은 특성을 나타내었다. CdSe와 $CdS_{0.5}Se_{0.5}$ 반도체를 첨가한 ZK-1 유리는 열처리온도를 달리 함으로서 흡수단을 변화시킬 수 있는 범위가 ~100nm나 되고 광흡수게수도 아주 높아 sharp-cut용 광학 fiter로 아주 우수한 특성을 나타내었다. The optical absorption characteristics of glasses colored by CdS. CdSe, $CdS_{1-x}Se_x$,ZnS, and ZnSe microcrystallites have been studied with emphasis on changes of the cut-off wavelength. The sharpcut filters with various cut-off wavelengths were fabricated by controlling the composition and the heat-treatment temperature. The cut-off wavelength shifts due to the different heat-treatment temperatures for CdS. CdSe, ZnS, and ZnSe doped SK-16 glasses were found to be relatively small(~30 nm). However, by treating the CdS1,Se, doped SK-16 glasses with different x values at the same heattreatment temperature, it was possible to obtain the filters with various cut-off wavelengths(~130 nm) without losing the high extinction coefficients of the filters. The filter glasses with various cut-off wavelngths(~100 nm) and high extinction coefficiencts were also produced by treating the CdSe and $CdS_{0.5}Se_{0.5}$ doped ZK-1 glasses at different temperatures.
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신용태,손복경,주윤성,박기혁 대한혈관외과학회 2011 Vascular Specialist International Vol.27 No.2
Purpose: The purpose of this study was to evaluate the great saphenous vein (GSV) as a conduit for crossover femoro-femoral bypass. Generally the conduit for crossover femoro-femoral bypass is a synthetic material because of the acceptable long-term patency and low complication rates. But, as the average life expectancy becomes extended, a better patency rate becomes more important. In this study, we compared the patency rates and hemodynamic results between crossover femoro-femoral bypass operations with GSVs and those with synthetic grafts. Methods: From 1998 to 2008, 119 femoro-femoral bypass operations were done. Among them, 38femoro-femoral bypass used GSV as a conduit (group I) and 79 operations used expanded polytetrafluoroethylene (group II). Two cases used arm veins and we excluded those cases. Results: The 3 year primary patency rate of total cases was 75.1%, 93.7% in group I and 66.1% in group II. There were no statistical differences in hemodynamic results such as peak systolic velocity, volume flow and ankle/brachial systolic pressure index between the two groups. Conclusion: The 3 year primary patency rate of group I was better than that of group II. However there were no differences in hemodynamic changes. So GSV is recommended as a conduit for crossover femoro-femoral bypass especially in young patients who are eager to have longer patency rates after surgery instead of less invasive endovascular therapy.
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신용태,Sin, Yong-Tae 한국정보통신집흥협회 1997 정보화사회 Vol.113 No.-
전자상거래(EC, Electronic Commerce)는 개인, 기업내 및 기업간, 그리고 국가내 혹은 국가간의 거래와 관리의 모든 과정을 전자적으로 처리하는 것을 말한다.
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신용태,임장근 대한기계학회 1993 대한기계학회논문집 Vol.17 No.5
Using regular finite elements and infinite elements simultaneously, elastic boundary value problems with infinite domain can be analyzed more effectively and accurately. In this paper, two dimensional infinite elements have been formulated by means of applying the derived mapping function to the coordinates and multiplying the regular displacement shape functions by a decay function. Orders(m, n) of the mapping and decay functions are found for the purpose of obtaining the convergent solutions without respect to the various decay lengthes. As a result of numerical tests for an infinite plate with a hole under internal pressure, two sets of function orders are obtained as follows. (a) n=0, m=1.5 (b) n=m=0.65
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상대일본어형성(上代日本語形成)에 관한 연구(1) : 팔모음설 등 , 상대가명유의 재검토 , キ(ギ갑을(甲乙)을 중심으로
신용태 한국일어일문학회 1995 日語日文學硏究 Vol.26 No.1
上代日本詩が, 八, 七, 六母音說という, 樣樣な說が出され, 學界では未だ論爭がくりかえされている, それで, 筆者は, より根源的な問題をとりあげて考察し, 問題の究明をはかろうと計劃し, まず, 「キ(ギ)甲乙」の用字法について再檢討してみたのであるが, その方法論として, これらの漢字の上古漠語の音價を調べ, それと同時に, 上古漢語から切韻までの中國語音韻史の變化をたどってみた. 一方, 近世朝鮮朝の諸文獻に載せられてある漠字音の反映された內容と, また, 古代韓國語の i 母音と關連される諸樣相を硏究した諸論文を參考する等, 以上のような考察の結果をまとめて, 日本上代語の「キ(ギ)甲乙の音價を推定してみた. その結果として,「キ(ギ)甲乙」の母音音價は, 各各 i と i であると推定した.
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