http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Electronic Feedback System for Stabilization of Fiber Ring Resonator
Sommart Sang-Ngern,Athikom Roeksabutr 한국전자통신연구원 2010 ETRI Journal Vol.32 No.1
We propose a simple technique to stabilize the optical output intensity of a fiber ring resonator. The electronic feedback circuit system, which consists of two voltage control oscillators, a phase comparator, and a low pass filter, is applied to the fiber ring resonator in order to compensate the optical phase shift in the ring loop. The reference electrical signal determines the operating condition of the fiber ring resonator for the desired optical output signal. The experimental results within the operating range agree well with the analytical results. The simulated performance of the proposed model is also compared with that of other existing models and shows significant improvement over them.
Youn, Ui Joung,Park, Eun-Jung,Kondratyuk, Tamara P.,Sang-Ngern, Mayuramas,Wall, Marisa M.,Wei, Yanzhang,Pezzuto, John M.,Chang, Leng Chee American Chemical Society and American Society of 2016 Journal of natural products Vol.79 No.6
<P>A new fatty acid ester disaccharide, 2-O-(beta-D-glucopyranosyl)-1-O-(2E,4Z,7Z)-deca-2,4,7-trienoyl-beta-D-glucopyranose (1), a new ascorbic acid derivative, 2-caffeoyl-3-ketohexulofuranosonic acid gamma-lactone (2), and a new iridoid glycoside, 10-dimethoxyfermiloside (3), were isolated along with 13 known compounds (4-16) from fermented noni fruit juice (Morinda citrifolia). The structures of the new compounds, together with 4 and 5, were determined by 1D and 2D NMR experiments, as well as comparison with published values. Compounds 2 and 7 showed moderate inhibitory activities in a TNF-alpha-induced NF-kappa B assay, and compounds 4 and 6 exhibited considerable quinone reductase-1 (QR1) inducing effects.</P>