http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Chien-Ning Huang,Chi-Li Lin,Hsin-Hua Li,Sing-Hua Tsou,Chiung-Huei Peng 한국식품영양과학회 2023 Journal of medicinal food Vol.26 No.7
Abelmoschus esculentus (Okra) Prevents Insulin Resistance and RestoresNeuron Autophagy by Regulating Dipeptidyl Peptidase-4and Thus Improving Hippocampal Function
Chien-Ming Wu,Hsiao-Chun Lin,Fang-Yi Cheng,Mu-Hua Chien 한국기상학회 2019 Asia-Pacific Journal of Atmospheric Sciences Vol.55 No.4
In this study, we aim to evaluate the impact of fast land-atmosphere interactions on the afternoon thunderstorm in Taiwan through high-resolution meteorological simulations. For this purpose, the Noah land surface model (LSM) is implemented into the vector vorticity equation cloud-resolving model (VVM) with corresponding realistic land surface data of Taiwan into the coupling system, called TaiwanVVM. Two idealized experiments are conducted by giving the same surface forcing but one with direct land-atmosphere coupling from Noah LSM (called Coupled experiment) and the other with prescribed surface fluxes (called Prescribed experiment). Our results show that the fast land-atmosphere interaction over complex topography has a significant influence on rainfall intensity, especially in the heavy precipitating region where the interaction is strong.Without direct coupling between the land surface and the atmosphere in the Prescribed experiment, the diurnal intensity is suppressed by 50%over whole Taiwan and 70% for East Taiwan. Our findings demonstrate that the intensity of the afternoon thunderstorm is sensitive to fast land-atmosphere interactions by modifying local circulation in the mountainous region of Taiwan.
A High Performance Soft-Switching AC/DC Converter
Chien-Ming Wang,Chang-Hua Lin,Chi-Hsiang Cheng,Bo-Han Wu 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
This paper introduced a high performance single stage soft-switching AC/DC converter. The introduced soft-switching AC/DC converter uses four switches fullbridge circuit construct to achieve the input power factor correction and the output DC voltage regulation. The introduced soft-switching AC/DC converter adopts interleaved operation mode in ac input side to reduce the input current harmonic and increase the supply power level. Moreover, the introduced soft-switching AC/DC converter can get soft-switching function on its main power switches without soft-switching auxiliary circuit. Thus, the cost of circuit in low. A simple phase-shift control strategy is used to synthesize a suitable low harmonics sinusoidal waveform for the ac input current and achieve well dynamic regulation. A design example of 1000W high performance DC power supply system is examined to assess its performance.
Chien-Yeh Ho,Chien-Ming Wang,Chang-Hua Lin 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper proposes a novel multi-phase PWM dimming control scheme which possesses two-phase, four-phase, six-phase, and eight-phase for backlight inverter. Each phase driving circuit can control the lamp current of two ccfls at least. From the experimental results for four-phase and six-phase PWM dimming control, we got a conclusion which power efficiency η (%) is directly proportional to No. of phases and lamp current error E (%) is inversely proportional to No. of phases. Hence higher phases dimming will achieve uniform output lamp currents which is called current equalization. We develop a design rule which compare system parameters in multi-phase dimming control for backlight inverter. We conclude that the experimental results also can apply for two-phase and eight-phase PWM dimming control.
A Single-Stage Resonant Buck-Boost AC Voltage Regulator
Chien-Ming Wang,Chang-Hua Lin,Guan-Yu Chen 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
This paper proposed a single-stage resonant buck-boost ac voltage regulator. The proposed regulator can output a voltage which is larger or lower than the input ac one and is dependence on depending on the instantaneous duty-ratio. This property is not found in the conventional single-stage ac voltage regulator that the ac output instantaneous voltage is always lower than the input ac voltage. The proposed ac voltage regulator uses a series-resonant circuit to configure adaptively the resonant voltage pulse trains. The proposed ac voltage synthesized the resonant voltage pulse trains following the input voltage amplitude to the synthesized sinusoidal waveform (SSW) before output filter. Because the SSW very closes sinusoidal waveform, the proposed ac voltage regulator can use a simple LC filter to filter the undesired harmonics and to get the sinusoidal voltage waveform with low total harmonic distortion (THD). The proposed ac voltage regulator is controlled by constant frequency pulse width modulation technique. Its control circuit is simple. A design example of a 600W proposed ac voltage regulator is examined to assess the system performance. Under rated output power, the power efficiency is over 91% and the total harmonic distortion (THD) is within 6%.
Photoinduced Electron Tansfer of Microperoxidase-8
Su, Chien-Hua,Lin, Ren-Jay,Chang, I-Jy Korean Society of Photoscience 1999 Journal of Photosciences Vol.6 No.3
Microperoxidase 8 (MP8) has been prepared by sequential hydrolysis of cytochrome C by pepsin and trypsin. This five-coordinated heme-octapetide fragment provides a uniques structure to evaluate the electronic coupling efficiency to the iron through axial position and porphyrin edge. At alkali pH, Ru(bpy)2(im)22+ is completely quenched in AcMP8Ru complex . Transient kinetics measurement showed the decay rate to be ~1 $\times$1012S-1. Ruthenium bipyridine complex with a carboxyl group substituted bipyridine has been prepared adn reacted with MR 8 to yield N-terminus bound RuMP8 complex. The luminescence decay rate has been measured as 1 $\times$109S-1. By using semiclassical electron transfer theory, we found the electron transfer efficiency through axial positioin of iron prophyrin is as good through prophyrin edge.
Chang-Hua Lin,Chien-Ming Wang,Liang-Cheng Lee,Ting Ou-Yang 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
A microcontroller-based electronic ballast for electrodeless fluorescent lamp (EFL) is implemented in this paper. The main circuit consists of a class D converter and a resonant circuit to form a resonant inverter. In addition, an 8-bit microcontroller is employed to act as the control core of the system to achieve soft start and smooth dimming feature. Moreover, we not only discuss the lamp model, the related control methods, but also implement the lamp current regulation by using the primary-side control to stabilize the preset lamp current. Finally, the experimental results are used to verify the feasibility and validity of the proposed system.
Angelica dahurica attenuates melanogenesis in B16F0 cells by repressing Wnt/β-catenin signaling
Fang Chien-Liang,Goswami Debakshee,Kuo Chia-Hua,Day Cecilia Hsuan,Lin Mei-Yi,Ho Tsung-Jung,Yang Liang-Yo,Hsieh Dennis Jine-Yuan,Lin Tzu-Kai,Huang Chih-Yang 대한독성 유전단백체 학회 2023 Molecular & cellular toxicology Vol.19 No.1
Background Melanogenesis is a complex process which is tightly regulated by several enzymes. However, abnormal melanogenesis can cause severe dermatological problems. Roots of Angelica dahurica have been used for skin care as a part of traditional Chinese medicine for many generations. However, the role of A. dahurica in melanogenesis remains unclear. Objective Previous in vitro and in vivo studies have demonstrated that NK-1R exerts positive effects in melanogenesis via the Wnt/βcatenin signaling pathway. In this study, we investigated the effects of A. dahurica ethanol extract (ADE) on NK-1R and Wnt/β-catenin signaling, and evaluated the effect of NK-1R on melanogenesis in B16F0 cells. Results Angelica dahurica ethanol extract efficiently downregulated Neurokinin-1 receptor and Wnt/β-catenin signaling by decreasing the expression of β-catenin, MITF, LEF-1, TYR, TRP1, and TRP2 and increasing the expression of GSK3β, which resulted from the weakened expression of the Neurokinin-1 receptor inhibitor [Sar9,Met(O2 )11]-Substance P (SMSP). Furthermore, the intracellular melanin assay and cellular tyrosinase activity confirmed these findings. Conclusion This study suggests that ADE has potential to downregulate Neurokinin-1 receptor in SMSP-induced B16F0 cells, thereby repressing the Wnt/β-catenin signaling and reduces melanin production.