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      • KCI등재
      • KCI등재

        세개의 Gauss 동을 중첩한 간섭계형 결상계의 진폭임펄스와 초분해능

        송영란,이민희,이상수 한국광학회 1997 한국광학회지 Vol.8 No.1

        The amplitude impulse S(x) of an interferometric optical imaging system for λ=193 nm(ArF laser) and NA=0.5 is derived for the pupil with superposed three Gauss pupils $A_1$($\omega$), $A_{2-}$($\omega$) and $A_{2+}$($\omega$). It is shown that FWHM of S(x) can be far less than the Rayleigh's criterion of resolution $\frac{1}{2}{\epsilon}_R$, where ${\epsilon}_R$ is equal to λ=193 nm in the present case of NA=0.5. The three Gauss pupils are provided in an optical system which consists of a Twyman-Green interferometer and an imaging system. The system is proposed and relevent optical components are discussed. Siloxane polymer is suggested for fabrications of amplitude modulation plates. In the present work, we assumed the system is free from aberration and linear. The case that the system has residual aberrations is important, and further work is necessary.

      • KCI등재

        회절 역문제로 유도한 변조된 Gauss 동함수에 대한 결상계의 OTF

        송영란,이민희,이상수 한국광학회 1997 한국광학회지 Vol.8 No.2

        The Gaussian diffraction pattern initially assumed in the diffraction inverse problem is further sharply defined by multiplying $e^{-q{\omega}_0$\mid${\chi}$\mid$}$. The modified pupil function is obtained and the diffraction intensity distribution for the finite aperture ($-{\omega}_0~{\times}{\omega}_0$ is obtained, and then the OTF is derived analytically. It is found the OTF is equal to or less than the $(OTF)_{q=0}$, namely the modulation is not useful. It is shown that the narrowing down the initial Gaussian diffraction pattern does not give the anticipated improvement in OTF and the reason is clarified.

      • KCI등재

        가우스 동 결상계에 대한 Strehl Ratio와 Marechal 한계

        송영란,이민희,이상수 한국광학회 1998 한국광학회지 Vol.9 No.4

        The Strehl ratio(SR) expressions are derived from the diffration intensity distribution in a Gaussian pupil imaging system, and Marechal criterion is applied for the case of astigmatism aberration first and then to all the rest of the Seidel 1st order aberrations. The aberration criteria obtained are tabulated. In the case of Rayleigh's pupil, the same criteria are always smaller than Gaussian pupil, thus the latter is superior to the former.

      • KCI등재

        Optimal Production of Exopolysaccharide by Bacillus licheniformis KS-17 Isolated from Kimchi

        송영란,정도연,백상호 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.2

        A strain producing exopolysaccharide (EPS)with strong hydroxyradical scavenging activity and antityrosinase activity has been isolated previously. However,the EPS production rate of the strain (7.3 g/L) was relatively low to utilize it at the industrial level. Therefore,in this study, optimal medium and fermentation conditions were examined to enhance EPS production by Bacillus licheniformis KS-17. Maximum EPS production was obtained in medium with 125 g/L sucrose, 30 g/L ammonium sulfate, and 10 mM calcium chloride without a phosphate source at 37oC for 5 days with the initial pH adjusted to 8.5. Under optimal culture conditions, EPS was produced at up to 27.2 (at 5 days) vs. 12.0 g/L (at 7 days under basal conditions), which was 2.3 times greater and in a shorter time than the production yield possible without optimizing conditions.

      • KCI등재

        Preparation of Fermented Sugar-soaked Black Soybean Snacks (FSBSS) and Characterization of Their Quality Changes

        송영란,김영은,김종휘,송노을,정도연,백상호 한국식품과학회 2011 Food Science and Biotechnology Vol.20 No.6

        Fermented sugar-soaked black soybean snacks (FSBSS) were prepared using optimized conditions at 2times sugar soaking process to give a desirable form and texture after fermentation with Lactobacillus plantarum (LP) and Bacillus subtilis (BS) for 48 h. The prepared FSBSS showed higher total polyphenol and flavonoid contents than an unfermented (NF) sample; total isoflavone content increased approximately 31 and 17% (LP and BS,respectively), as compared to NF. γ-Aminobutyric acid was also contributed by LP and BS, indicating significantly higher contents of 16.9 and 21.6 mg/g (LP and BS,respectively) compared to NF (15.2 mg/g). Moreover, the FSBSS showed antioxidant activities on DPPH, superoxide,and hydroxyl radicals as compared to NF. Based on the results, the newly developed FSBSS using solid-fermentation indicate a useful and convenient way to replace traditional soybean products from the standpoint that also provides an easy means to supply high nutritive and functional properties.

      • KCI등재

        Physicochemical and Functional Characteristics of a Novel Fermented Pepper (Capsiccum annuum L.) Leaves-based Beverage using Lactic Acid Bacteria

        송영란,신남식,백상호 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.1

        Two lactic acid bacteria (LAB), Lactobacillushomohiochii JBCC 25 and L. homohiochii JBCC 46, wereisolated from a naturally fermented vinegar beverage. Fermented pepper leaves beverage (FPLB-3) which indicatedgood assessment based on a sensory evaluation test wasprepared using the mixed strains. The prepared FPLB-3showed enhanced functional aspects based on γ-aminobutyricacid (23.6 mg%), total polyphenol (2,828.2 gallic acidequivalents μg/g), and flavonoid contents (2,008.8 catechinequivalents μg/g). Moreover, FPLB-3 showed significantlystronger scavenging activities for the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical (84.6%) and superoxideradical (90.8%) and outstanding inhibitory activity againstα-glucosidase of 65.9% at 50 mg/mL compared to the rawmaterial. Based on the results, the newly developed FPLBusing Wongi-1 pepper leaves and Lactobacillus is expectedto be a novel functional food with natural antioxidant andantidiabetic capacities.

      • KCI등재

        잔류수차가 있는 유한 가우스 동의 회절진폭 분포

        송영란,이민희,이상수 한국광학회 1998 한국광학회지 Vol.9 No.3

        It is shown that the optical system with Gaussian pupil e, diffraction amplitude distribution is not affected by the presence of residual aberrations. The case of spherical aberration is treated, as an example, and the complex diffraction amplitude distribution at the neighbourhood of the image point is described analytically by using a recurrence formula.

      • KCI등재

        성경동화 활동이 유아의 신앙 발달과 친사회적 행동발달에 미치는 영향

        송영란,오영희 한국유아교육학회 2006 유아교육연구 Vol.25 No.6

        This paper analyzes the effects of Bible Story Activity on the development of young children's religious faith and pro-social behaviors. We used Bible Story Activity and materials based on Fowler's (1981) and Goldman's (1964) faith theories. We also used Eisenberg's (1997) pro-social behavior theory for our analysis. We used Bible Story Activity with five-year-old children for 8 weeks in a preschool education center affiliated with Pai-Chai University. Sixty children were divided evenly into an experimental group and a control group. The experimental group had 16 sessions with Bible Story Activity. The results of our study show that the experimental group achieved significantly higher points than the control group on items designating their faith in Jesus Christ and his resurrection, the kingdom of God, prayer and forgiveness. The pro-social behavior analysis also showed that the experimental group exhibited more positive pro-social behaviors in areas such as helping, sharing, pro-social reasoning and empathizing and the like. Bible Story Activity proved to be a very useful and effective educational method for Christian preschool education centers and the teaching of Christian principles. The study concludes with a discussion and some suggestions for further study in Christian education methods. 본 연구는 유아의 성경동화 활동을 구성하고 이를 현장에 적용해 유아의 신앙개념과 친사회적 행동 발달에 어떠한 영향을 미치는지를 밝히는데 목적을 두고 있다. 성경동화 중에서 유아의 신앙과 친사회적 행동을 증진시키는 내용을 선정하여 8주 동안 P대학 부속 유치원 유아 만 5세 반 60명을 대상으로 비교집단과 실험집단으로 나누어 16회를 실시하였다. 그 결과 성경동화 활동은 유아의 신앙 발달 증진에 있어서 긍정적인 효과가 있으며, 하위변인별 신앙내용개념에 있어서 예수님에 대한 믿음과 부활 개념, 하늘나라의 개념, 기도 개념 및 용서 개념에 긍정적인 효과가 있는 것으로 나타났다 그리고 유아의 친사회적 행동인 도와주기, 나눠주기, 친사회적인 추론, 감정이입의 증진에 효과가 있는 것으로 나타났다.

      • KCI등재

        가우스 진폭변조판의 제작 및 회절 선폭 측정

        송영란,이민희,이상수 한국광학회 1999 한국광학회지 Vol.10 No.6

        가우스 함수 형태인 진폭임펄스 초기 함수 $e^{-\sigma^2\chi^2}$를 역푸리에 변환하여 변조된 가우스 동함수 $e^{\frac-{\omega^2}{4\sigma^2}$를 구하였다. 굴절률이 같은 흡수유리와 투명유리를 조합한 가우스 진폭변조판에 적용되는 설계이론을 유도하고 설계에 따라 가우스 진폭변조판을 제작하였다. 가우스 진폭변조판은 포물선 방정식형태로 제작하여 투과율을 측정한 뒤 설계이론에 따라 구한 값과 비교하였다. 파장이 $0.365{\mu}m$이고, 수치구경수(NA)가 0.07인 광학계에서 가우스 진폭변조판이 있을 때와 없을 때에 폭이 $60{\mu}m$인 단일 슬릿과 $25{\mu}m$인 단일 슬릿의 각각의 경우에 대해 회절 선폭을 비교하여 가우스 진폭변조판에 의해서 선폭이 2/3로 감소함을 확인하였다.

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