• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.299.2-299.2
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• 2002

For the activity-guided separation on anti-asthmatic action from 4 fractions as n-hexane (yield. 0.09%), EtOAc (0.48%), BuOH (3.0%) and H2O (5.17%) fractions from MeOH extract (11.64%) of powdered Gastrodia elata Rhizoma (GER), some biological active agents were isolated by column chromatography (column, silica gel: elution solvent. CHCl3 : MeOH) according to the method of Junko Hayashi et. al. and Heihachiro Taguchi et. al. (omitted)

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.300.1-300.1
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• 2002

From 4 fractions as n-hexane (yield. 0.09%), EtOAc (0.48%). BuOH (3, 0%) and H2O (5.17%) fraction from MeOH extract (11, 64%) of powdered Gastrodia elata Rhizoma (GER) for the activity-guided separation on anti-inflammatory action. some biological active agents were isolated by column chromatography (column. silica gel: elution solvent. CHCl3 : MeOH) according to the method of Junko Hayashi et. al. and Heihachiro Taguchi et. al. Compound I, II, III, IV, V as phenolic derivatives were isolated in the EtOAc and BuOH fractions. (omitted)

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.313.2-313.2
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• 2002

Environmentally benign protein staining method in sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) using both an acidic dye, zincon (ZC) and a basic dye. ethyl violet (EV) is described. It is based on a counter ion-dye staining technique that employs oppositely charged two dyes to form an ion-pair complex. The selective binding of the free dye molecules to proteins in an acidic solution produces bluish violet colored bands. It is a rapid procedure, involving only fixin and staining steps that are completed in 45 min. (omitted)

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.353.2-353.2
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• 2002

5-Arylamino-6-chloro-4.7-dioxoindazoles (DZs) were newly synthesized for the evaluation of antifungal activities. The compounds DZs were prepared by regioselective nucleophilic substitution of 5.6-dichloro-4.7-dioxoindazoles with appropriate arylamines in high yield. DZs were tested for their growth inhibitory activities against Candida species and Aspergillus niger. The MIC values were determined by the two-fold dilution method. In general. DZs showed in vitro antifungal activities. Among the tested compounds, DZ1, 3, 6, 7 and 12 showed potent antifungal activities against Candida species and Aspergillus niger. DZ7 was the most effective in preventing the growth of Candida species.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.350.2-350.2
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• 2002

The reaction of N-acyliminium ion with a variety of nucleophiles is one of the powerful method to introduce various substituents at the a-carbon of an amine. Particularly this type of inter and intramolecular C-C bond formation can be effectively applied to the synthesis of the bioactive natural or unnatural compounds as well as many bioactive peptidomimetics. Accordingly. much attention has been devoted to the practical and efficient methods for the generation of acyliminium ion precursors though there are many important aspects in the reaction involving N-acyliminium ions. (omitted)

• 한국신뢰성학회:학술대회논문집
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• 한국신뢰성학회 2001년도 정기학술대회
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• pp.311-319
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• 2001

All indices that are now in use assume normally distributed data, and any use of the indices on non-normal data results in inaccurate capability measurements. Therefore, $C_{s}$ is proposed which extends the most useful index to date, the Pearn-Kotz-Johnson $C_{pmk}$, by not only taking into account that the process mean may not lie midway between the specification limits and incorporating a penalty when the mean deviates from its target, but also incorporating a penalty for skewness. Therefore we propose, a new process capability index $C_{psk}$( WV) applying the weighted variance control charting method for non-normally distributed. The main idea of the weighted variance method(WVM) is to divide a skewed or asymmetric distribution into two normal distribution from its mean to create two new distributions which have the same mean but different standard distributions. In this paper we propose an example, a distribution generated from the Johnson family of distributions, to demonstrate how the weighted variance-based process capability indices perform in comparison with another two non-normal methods, namely the Clements and the Wright methods. This example shows that the weighted valiance-based indices are more consistent than the other two methods In terms of sensitivity to departure to the process mean/median from the target value for non-normal process.s.s.s.

• 한국정보통신학회논문지
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• 제17권9호
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• pp.1986-1995
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• 2013

수집된 전자 정보 신호를 분석하여 활동 중인 레이더를 식별하는 ELINT 시스템은 현대 전자전에서 매우 중요한 역할을 담당한다. 수집된 신호로부터 추출할 수 있는 여러 레이더 운용 변수 중 펄스 내 변조 방식은 점점 고도화되는 레이더의 식별에 필수적인 정보이다. 본 논문은 퍼지 알고리즘을 이용하여 수집 신호에 적용된 펄스 내 변조 방식을 인식하는 기법을 제안한다. 제안하는 기법은 신호를 특징짓기 위한 퍼지 멤버십 함수와 이를 이용하여 적용된 변조방식을 추론하기 위한 퍼지 추론 규칙을 정의한다. 실험 결과는 제안된 기법이 SNR 10dB 이상의 수집 환경 하에서 95% 이상의 변조 방식 인식률을 보장함을 보인다.

• 약학회지
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• 제59권3호
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• pp.120-126
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• 2015

Akebiae caulis have been used in folk medicines for diuretic, menstrual pain, and diuretic pain. It has been also resolved nephritis and cystitis. In this study, we isolated three phenolic compounds from 70% methanol extract using the open column chromatography. These isolated compounds which were 2-(3,4-dihydroxyphenyl)-ethyl-${\beta}$-D-glucopyranoside, 5-O-caffeoylquinic acid, and syringoylglycerol 2-O-${\beta}$-D-glucoside were determined by physico-chemical apparatus. Furthermore, we conducted DPPH and ABTS assay in order to screen the antioxidant activity of isolated three compounds. Also, we developed a rapidly HPLC-UV analysis method of two phenolic compounds (2-(3,4-dihydroxyphenyl)-ethyl-${\beta}$-D-glucopyranoside, 5-O-caffeoylquinic acid) for evaluating the Akebiae Caulis collected 30 samples from different regions. From the experiments, all three isolated compounds showed the significant antioxidant activity. We suggested that the content criteria of marker compounds were shown by a simple and rapid HPLC-UV method. The contents respectively were 0.009% (2-(3,4-dihydroxyphenyl)-ethyl-${\beta}$-D-glucopyranoside) and 0.036% (5-O-caffeoylquinic acid).

• 한국정보통신학회논문지
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• 제12권9호
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• pp.1654-1665
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• 2008

본 논문에서는 대표적인 반복 부호 알고리즘인 터보 부호, LDPC부호 TPC 등 세 가지 알고리즘에 대해 8PSK 이상의 다치 변조 방식 적용을 위해 수신단에서 비트 분리 방법을 제시한다. 수신된 I, Q 심볼만을 이용하여 세 비트 이상의 비트를 분리하기 위한 LLR 방식에 기초를 하여 LLR 방식의 단점인 복잡도를 개선하기 위해 Euclidean, MAX, sector, center focusing 방식에 대해 검토하였으며, 세 가지 반복 부호에 대해 최적의 비트 분리 방법을 제시하였다. 또한 DVB-S2에 적용되는 double ring 구조의 16-APSK, 지상파 DMB에 적용되는 격자구조의 16-QAM 방식에 대해 최적의 비트 분리 방법을 제시하였다.

• 한국항공우주학회지
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• 제34권11호
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• pp.47-53
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• 2006

본 연구에서는 다중 변조 방식의 변조 지수에 따른 전력 손실을 위성 관제 전송 모드별로 해석하고, 위성 관제 전송 모드에 대한 필요한 위성 링크 마진을 제시하였다. NRZ/PSK/PM 다중 변조 신호의 전송 신호간 간섭 현상과 위성 관제 수신 신호의 임계값을 기준으로 원격 명령과 원격 측정 신호의 최적 부 반송파 신호를 제안하였다. ESA 거리 측정 방식을 사용하는 위성 관제 모드에서는 12 kHz 또는 14 kHz 의 원격 명령 부 반송파 신호를 그리고, GSTDN 방식을 사용하는 운용 모드에서는 16 kHz 부 반송파를 사용하여 다양한 위성 관제를 할 수 있도록 한다. 또한 원격 측정 신호의 부 반송파는 65.536 kHz를 사용하여 양호한 수신 성능 및 동작 영역을 보장하도록 한다.