• 한국전기전자재료학회논문지
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• 제21권12호
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• pp.1130-1134
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• 2008

Thermal and electrochemical properties were discussed with tris(2,4,6-trimethoxyphenyl)Phosphine (TTMPP) as a flame retradant additive for Li-ion battery. TTMPP showed excellent thermal stability with charged cathodes. Addition of 1 wt.% of the additive to the electrolyte improved the thermal stability without damaging the performance of the battery. The oxygne evolution reaction delayed nearly by $60^{\circ}C$. The capacity retention ratio in cycle life tests of the battery with 1 wt.% TTMPP was slightly improved comparing to the no additive cells.

• 통합자연과학논문집
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• 제2권1호
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• pp.24-27
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• 2009

Electrochemistry of 1.0 mM tris(2,2'-bipyridyl)ruthenium(II) ($Ru(bpy)_3{^{2+}}$) in 300 mM $H_2SO_4$ solution with and without sodium dodecyl sulfate (SDS) is studied. In the presence of SDS, $E_{pa}$ of $Ru(bpy)_3{^{2+}}$ shifts to positive direction compared to the SDS free case. The intersection of two lines on ${\Delta}E_p$ vs. -log[SDS] plot is measured as a critical micelle concentration (CMC), which is 3.67 mM SDS.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.465-468
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• 2008

New green light emitting phosphorescent devices with host structure of TCTA[4,4',4"-tris(N-carbazolyl)-triphenylamine]/$TCTA_{0.5}TPBi_{0.5}$/TPBI[1,3,5-tris(N-phenylbenzimiazole-2-yl)benzene] were proposed and investigated according to the thickness combination of host layers and the doping level of $Ir(ppy)_3$[tris(2-phenylpyridine) iridium(III)].

• 대한화학회지
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• 제12권4호
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• pp.146-149
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• 1968

A new chelate compound, tris(8-bydroxyquinolino)molybdenum(III), [$Mo(C_9H_6ON)_3$], has been prepared by the method of electrolytic reduction of the acidic molybdate solution. Thermal decomposition products of the chelate has been studied by DTA and TGA method. It is concluded that the decomposition product is a yellowish green colored bis(8-hydroxyquinolino)dioxo molybdenum(VI), [$MoO_2(C_9H_6ON)_2$].

• Bulletin of the Korean Chemical Society
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• 제35권10호
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• pp.2950-2954
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• 2014

A series of bis and tris-indolylketones and meridianin alkaloids are prepared by one pot Michael reaction of indole and ketene S,S-acetals under solvent-free condition using mild Lewis acid $InCl_3$.

• 한국세라믹학회지
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• 제30권11호
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• pp.905-910
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• 1993

$\alpha$-tricalcium phosphate($\alpha$-TCP) powders were synthesized and their hydration properties were investigated in Tris. solution. Two kinds of $\alpha$-TCP powder samples were prepared; the one is reaction product of CaHPO4.2H2O and CaCO3, and another is that of hydroxyapatite(HAp) and $\beta$-Ca2P2O7. They were satisfied with Ca/P mole ratio 1.5 and were heated at 150$0^{\circ}C$ for 5 hours. In the hydration of $\alpha$-TCP samples the powder which was synthesized from HAp and $\beta$-Ca2P2O7 was hydrated faster than that from CaHPO4.2H2O and CaCO3. The hydration reaction of $\alpha$-TCP powder transformed rapidly into HAp accompanying setting and hardening. It was realized that the hydration reaction of $\alpha$-TCP was due to the solution-precipitation mechanism and the hydrates from the reaction were Ca-deficient HAp having funtional group HPO42-.

• Bulletin of the Korean Chemical Society
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• 제12권6호
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• pp.644-649
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• 1991

The approximate rates and stoichiometry of the reaction of excess lithium tris(dibutylamino)aluminum hydride (LT-DBA) with selected organic compounds containing representative functional groups under standardized conditions (tetrahydrofuran, $0^{\circ}C$) were studied in order to characterize the reducing characteristics of the reagent for selective reductions. The reducing ability of LTDBA was also compared with those of the parent lithium aluminum hydride and the alkoxy derivatives. The reagent appears to be much milder than the parent reagent, but stronger than lithium tri-t-butoxyaluminohydride in reducing strength. LTDBA shows a unique reducing characteristics. Thus, the reagent reduces aldehydes, ketones, esters, acid chlorides, epoxides, and amides readily. In addition to that, ${\alpha},{\beta}$-unsaturated aldehyde is reduced to ${\alpha},{\beta}$-unsaturated alcohol. Quinones are reduced to the corresponding diols without evolution of hydrogen. Tertiary amides and aromatic nitriles are converted to aldehydes with a limiting amount of LTDBA. Finally, disulfides and sulfoxides are readily reduced to thiols and sulfides, respectively, without hydrogen evolution.

• 약학회지
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• 제16권4호
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• pp.180-185
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• 1972

A new spectrophotometric method was established for the determination of undecylenic acid. The method is based on the solvent extraction into nitrobenzene of the ion pair formed between tris(1,10-phenanthroline)Fe(II) chelate and the anion of undecylenic acid. The maximum absorbance of the extract in the organic phase was at 518nm. A maximum extraction was obtained at pH 9-11, when excess of at least 50-fold(molar) of the phenanthroline-Fe(II) chelate to undecylenic acid was present. The color intensity of the extracted species remained constant at room temperature for the several hours after separation of the organic layer. A linear relationship was obtained over the tested range of 5-20${\gamma}$/ml of undecylenic acid. The effect of several other fungicids on this method was investigated. The method was applied to the determination of undecylenic acid in preparations and the results were in good agreement with those added amounts.

• 한국수정란이식학회지
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• 제17권2호
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• pp.137-143
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• 2002

본 연구는 개의 동결정액 제조 시 동결보호 희석액 내에 첨가되는 당의 종류와 조합이 동결융해 후 정자의 생존율 및 운동성에 미치는 영향과 정자동결 시 straw size가 생존율에 미치는 영향에 대하여 조사하고자 실시하였다. 희석액은 Tris-citric acid extender (Tris-buffer)의 기본용액에 20% Egg-yolk, 8% glycerol, 1% Equex STM paste등을 첨가하였으며, 당 성분으로는 monosaccharide(fructose 및 xylose) 및 disaccharide(trehalose)로 구분하여 최종 70 mM의 농도로 첨가 이용하였다. 본 연구에서는 control (fructose, xylose, trehalose), two combination (Fru＋Tre, Fru＋Xy1, Tre＋Xy1) 및 three combination (Fru＋Tre＋Xy1)으로 구분하여 Tris-buffer에 첨가하였다. Fru＋Tre＋Xy1처리구에서 CASA분석 후 운동성이 fructose, trehalose, xylose, Fru＋Tre, Fru＋Xy1, Tre＋Xy1 처리구에 비해 가장 높았다 (69% vs 58, 61, 50, 65, 20, 54%). 또한 전진운동율은 Fru＋Tre 처리구가 fructose, trehalose, xylose, Fru＋Xy1, Tre＋Xy1, Fru＋Tre＋Xy1 처리구에 비해 가장 높았다 (59% vs 47, 55, 42, 13, 49, 44%). 이러한 결과를 바탕으로 Tris-buffer에 F겨＋Tre를 첨가하여 실험을 수행하였다. 예비동결 10분에서 0.25$m\ell$ straw를 이용하였을 때 10분 예비동결에 0.5 $m\ell$, 5분 예비동결에 0.25 및 0.5 $m\ell$ straw 처리구보다 유의적으로 높은 생존율을 얻었다 (80＋0.0 vs. 65＋7, 68＋16, 58＋8%). 본 연구결과 70 mM Fru＋Tre (two combination)가 첨가구가 가장 높은 전진운동율을 얻었으며, 0.25 $m\ell$ straw에 10분간 예비동결을 실시하는 것이 가장 높은 동결융해 후 생존율을 얻을 수 있었다.

• 한국산학기술학회논문지
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• 제18권2호
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• pp.405-414
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• 2017

한국군의 군수품 품질보증활동의 일환으로 시험성적서 정보서비스(TRIS)를 통한 시험성적의 신뢰성 확보가 전 분야 및 영역에서 요구되고 있다. 본 연구에서는 군수품 품질보증기관, 시험분석기관, 계약 및 협력업체의 설문조사를 통하여 TRIS에 대한 사용자 만족도를 파악하고, 사용자 그룹별 상세 분석을 통해 개선사항 및 발전방안을 도출하였다. 설문 문항은 Delone과 McLean의 정보시스템 성공모형 모델을 변형하여 작성하였으며, 3개 사용자 그룹 183명에 대하여 수행되었다. 전체 설문분석결과 3개 사용자 그룹에서 모두 시스템교육에 대한 요구가 높았으며, 사용자 그룹별 업무처리 방식에 따라 전반적 시스템의 이해도와 숙련도가 다른 것으로 조사되었다. 사용자 그룹별 세부분석결과, 국방품질보증기관의 경우 군수품의 분야별 계약업체 특성에 따라 사용자를 위한 기능강화가 요구되었으며, 시험기관의 경우 공인기관 인증형태에 따라 TRIS와의 연계방법이 요구되었다. 또한, 업체 사용자 그룹의 경우 계약업체와 협력업체가 TRIS를 운용하는 방식에 차이를 보였으며, 지속적 교육을 통한 협력업체의 인력운용지원이 필요한 것으로 분석되었다. 본 연구 결과는 향후 전 군의 군수품 신뢰성 확보를 위한 국방품질종합정보체계 구축의 기초자료로써 활용될 것으로 기대한다.