http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 송영란 (검색결과 40 건)
- 무료
- 기관 내 무료
- 유료
-
-
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.
-
-
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.
-
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.
-
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.
-
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.
-
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.
-
Gaussian Apodization이 되어 있는 X-선 결상계의 초분해능
송영란,이민희,이상수 한국광학회 1996 한국광학회지 Vol.7 No.2
Superresolution optics, employing Gaussian apodization, is rigorously treated at the soft X-ray wave-length(λ=0.013 ${\mu}{\textrm}{m}$) region. In the diffraction integral, the line integral along the imaginary axis is found small, and it is ignored, so that the diffraction integral consists of the integration along the real axis. The resolution of the diffracted image is not effected by the pupil angular frequency bandwidth $2{\omega}_0$, which is one of the most important the characteristic features of Gaussian apodization ($e^{-o^2x^2}$ optics. The superresolution optics has resolution ($\frac{1}{2}{\times}FWHM)$=$\Delta$x=0.008 $\mu$m which is smaller than the Rayleigh criterion of 2λ=0.026 ${\mu}{\textrm}{m}$ for NA=0.25. The optical system has ${\omega}_0{\ge}\frac{1}{2}{\sigma}$, which gives the peak intensity of the diffracted image larger than $e^{-2}$ times intensity obtainable by the infinite sperture.
-
윤대 동구에 대한 Gaussian Apodization
송영란,이민희,이상수 한국광학회 1996 한국광학회지 Vol.7 No.3
The amplitude LSF(Line spread function, $C_1e^{{o^2}{x^2}}$ or amplitude impulse) of the Gaussian apodized annular pupil is found to be same to that of the full aperture LSF($C_0e^{{o^2}{x^2}}$). $C_0$ and $C_1$ depending on $\sigma$, >${\omega}_0=\frac{2{\pi}}{\lambda}\;\frac{a_0}{l}$ and >${\omega}_0'=\frac{2{\pi}}{\lambda}\;\frac{a_0'}{l}$ which are the geometric parameter and pupil coordinates of the annular pupil. The important inequality relation among ${\omega}_0,\;{\omega}_0'$, a (fraction of diffraction amplitude) and $\sigma$ is obtained. It is $\frac{{\omega}_0}{\sqrt{2}}<{\sigma}{\le}(\frac{1-a}{2a})^{1/2}\;{\omega}_0$, and in the case of $a=e^{-1},\;a_0'{\le}0.34a_0$. The case of λ=0.013${\mu}{\textrm}{m}$, l=20 cm, $a_0=5cm$ and $a_0=0.34a_0=1.7cm$ give a Gaussian apodized superresolution ${\Delta}=\frac{\sqrt{log2}}{\sigma}=0.008{\mu}m$ annular pupil with the intensity signal equal to $e_{-2}$ times the signal obtainable by using the full aperture system(a=1)
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
