• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2001년도 봄 학술발표논문집 Vol.28 No.1 (A)
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• pp.328-330
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• 2001

무선 인터넷 환경하에서 신뢰성이 보장되어야 할 데이터의 전송이나 음성 데이터의 전송시에 혼잡으로 인한 손실이 발생했을 때, 라우터나 스위치에서의 손실을 네트웍 레이어에서 직접 복구를 함으로서 양단에서의 손실을 극소화함은 물론 지연시간을 최소화하여, 멀티미디어 데이터의 재생시에 치명적으로 작용할 수 있는 Jitter의 발생을 줄이며 네트웍 레이어에서의 손실을 최소화함으로써 무선 링크를 통한 복구 횟수를 줄여서 신뢰성 향상 및 전반적인 모바일 네트웍의 성능을 향상시킬 수 있는 방법을 제시하고 이에 대한 시뮬레이션을 통해 그 성능을 입증하도록 하겠다.

• Toxicological Research
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• 제5권1호
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• pp.49-52
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• 1989

Acute inhalation intoxication of CS (O-chlorobenzylidene malononitrile) occurred among the 192 animals in confined animal cages of farm as the result of prolonged exposure. A total of 8 animals (3 silver foxes, 3 fitches and 2 minks) died in 15 hours after the exposure. Distinct evidences of pulmonary atelectasis were observed as with hepatorenal damages. The lethal toxicity of CS was considered to be due to early severelung damages leading to asphyxia, accompanying acute toxic hepatitis and nephritis.

• Bulletin of the Korean Chemical Society
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• 제14권1호
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• pp.79-81
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• 1993

Synthetic routes are described for the introduction of hydroxyalkyl groups to the upper rim of calix[4]arene. Treatment of p-bromocalix[4]arene methyl ether 3 with n-BuLi followed by para-formaldehyde produced p-hydroxymethylcalix[4]arene methyl ether 4 in 60% yield. p-Acetylcalix[4]arene methyl ether 7, obtained by Friedel-Crafts acetylation of calix[4]arene methyl ether 6, was reduced with NaBH4 to produce p-(1-hydroxy ethyl)calix[4]arene methyl ether 8 in 67% yield.

• Bulletin of the Korean Chemical Society
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• 제17권6호
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• pp.525-528
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• 1996

Seven cali[4]arenes, having two different substituents in AAAB or AABB pattern at the upper rim of calix were synthesized by fragmentation condensation reaction of p-substituted phenol trimer (AAA) with 2,6-bishydroxymethylated 4-substituted phenol (B) or that of dimer (AA) with 2,2'-bishydroxymethylated dimer (BB). An equimolar mixture of the coupling components (trimer and monomer or dimer and dimer) was refluxed in dioxane in the presence of TiCl4to afford calix[4]arene 6 and 7 in 15-38% yield. The structure of calix[4]arenes was confirmed by elemental analysis and the 1H/13C NMR spectroscopy.

• Bulletin of the Korean Chemical Society
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• 제16권11호
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• pp.1122-1125
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• 1995

Three inherently chiral calix[4]arenes 3-5 were synthesized as racemate starting from the ethylation at 1.3-distal hydroxy groups of calix[4]arene 2 which has two phenyl groups at upper rim in AABB fashion, and then two remaining hydroxy groups were acetylated by treatment with acetyl chloride in the presence of NaH to produce calix[4]arene 4. Treatment of 4 with AlCl3 under Fries rearrangement conditions, only one acetyl group was rearranged to the para-position to afford calix[4]arene 5 with AABC substitution pattern at the upper rim of calix. The structure of chiral calix[4]arenes were confirmed based on NMR and massspectra.

• Bulletin of the Korean Chemical Society
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• 제21권6호
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• pp.618-622
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• 2000

The '3+1'type condensation of 16-thiatripyrromethane with $N-alkyl-24-bis[(\alpha+hydroxy-\alpha-phenyl)methyl]pvrole$, in the presence of acid catalyst afforded core-modified, N-confused porphyrins bearing alkyl groups at the rim nitrogen. The proton NMR spectra indicate that the bulkiness of the N-alkyl substituents is somewhat relatedwith the tiltedness of the inverted pyrrole ring. The changes in chemical shift of inner methine protons depending on the N-alkyl group and protonation site is discussed.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2018년도 추계학술대회
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• pp.88-88
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• 2018

• 한국작물학회:학술대회논문집
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• 한국작물학회 2019년도 춘계학술대회
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• pp.111-111
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• 2019

• East Asian mathematical journal
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• 제10권2호
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• pp.397-403
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• 1994

• 기술표준
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• 통권49호
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• pp.24-29
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• 2006