Browsing by Issue Date, starting with "2019-08-15"

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【設計獎道理，創新設計思考】
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
雙
(國立陽明大學, 2019-08-15)
林心亮
;
陽明電子報編輯小組
【失智防治與銀光經濟產業應用學分班】
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
陽明GLORIA講座：打造生技獨角獸的專屬平台
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
7月份的生醫領航方舟企業講座，邀請到以研發小分子新藥亮眼的國鼎生技蘇經天總經理蒞臨分享。蘇總經理以其豐富的經歷與獨到的見解...
AIT司徒文前處長、康照洲院長接任陽明副校長
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
本校於8月進行行政主管人事調整，美國在台協會（AIT）台北辦事處司徒文（William Stanton）前處長，以及食品藥物管理署康照洲前署...
【108年度會計業務研討會】
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
Temperature-Dependent Electroabsorption and Electrophotoluminescence and Exciton Binding Energy in MAPbBr(3) Perovskite Quantum Dots
(2019-08-15)
Rana, Shailesh
;
Awasthi, Kamlesh
;
Bhosale, Sumit S.
;
Diau, Eric Wei-Guang
;
Ohta, Nobuhiro
Organic inorganic lead halide perovskite nanocrystals have attracted much attention as promising materials for the development of solid-state light-emitting devices, but the existence of free or bound excitons or the formation of trap states remains under debate. We recorded temperature-dependent electroabsorption (E-A) and electrophotoluminescence (E-PL) spectra, that is, electric field-induced change in absorption and photoluminescence spectra, for methylammonium lead tribromide (MAPbBr(3)) colloidal perovskite nanocrystals, that is, quantum dots (QD), doped in a poly(methyl methacrylate) film in the temperature range of 40-290 K. Based on the results, the binding energy of the exciton (electron hole pair) was estimated. The exciton binding energy of QD of MAPbBr(3) estimated from the absorption and E-A spectra (similar to 17 meV) is nearly the same as that of a MAPbBr(3) polycrystalline thin solid film, while the exciton binding energy estimated from the temperature-dependent PL spectra (similar to 70 meV) is much greater than that estimated from the absorption profile. The frequency dependence of the E-A intensity observed at 40 and 290 K for the modulated applied electric field indicates a slow ion migration in nanocrystals, which follows the modulation of the applied electric field at a frequency less than 500 Hz. The observed E-A spectra were analyzed with an integral method on assuming the Stark effect; the magnitudes of the changes in electric dipole moment and polarizability following photoexcitation were determined at each temperature from 40 to 290 K. E-PL spectra show that the PL of QD of MAPbBr(3) is quenched on the application of an external electric field; the extent of quenching is much greater for trap emission than for exciton emission. Exciton phonon scattering, which is responsible for the line broadening of the PL spectra, is also discussed based on the temperature-dependent PL spectra.
生科院暑期實驗營，開啟生醫學習的大門
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
「107年暑期生物醫學實驗營」佳評如潮，陽明生命科學院今年暑假繼續辦理「暑期生物醫學實驗營」，共有69位來自全國各地的高中與大...
服務規格超越德、日，臺灣輔具暨長照大展再締新猷
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
由陽明ICF暨輔助科技研究中心主辦的「2019臺灣輔具暨長期照護大展」（ATLife），是臺灣唯一以輔具及長照為主軸的國際專業展會， 7...
Corrosion mechanism of annealed equiatomic AlCoCrFeNi tri-phase high-entropy alloy in 0.5 M H2SO4 aerated aqueous solution
(2019-08-15)
Yen, Chao-Chun
;
Lu, Hsueh-Ning
;
Tsai, Ming-Hung
;
Wu, Bo-Wei
;
Lo, Yu-Chieh
This work investigates the corrosion mechanism of annealed equiatomic AlCoCrFeNi tri-phase alloy in 0.5 M H2SO4 aerated aqueous solution. Experimental results indicate that the B2 matrix is preferentially corroded away while grain-boundary FCC and labyrinth-like BCC endure, consistent with the tendency of formation energy for monolayer hydroxide on the (001) plane of three phases calculated by the first principle based on density function theory. Furthermore, the stable passive current density is related to lower k(sp) values of Co(OH)(3), Fe (OH)(3), and Cr(OH)(3), while the annealing effect on enhancing corrosion resistance is owing to the more uniformity of passive hydroxide film.
An Open-Label, Randomized, Active-Controlled Trial of 8 Versus 12 Weeks of Elbasvir/Grazoprevir for Treatment-Naive Patients With Chronic Hepatitis C Genotype 1b Infection and Mild Fibrosis (EGALITE Study): Impact of Baseline Viral Loads and NS5A Resistance-Associated Substitutions
(2019-08-15)
Huang, Chung-Feng
;
Hung, Chao-Hung
;
Cheng, Pin-Nan
;
Bair, Ming-Jong
;
Huang, Yi-Hsiang
Background. A 12-week grazoprevir/elbasvir regimen is highly effective against hepatitis C virus genotype 1 (HCV-1) infection. The efficacy of an 8-week regimen for treatment-naive HCV-1-infected patients with mild fibrosis has not been determined. Methods. Treatment-naive HCV-1b-infected patients with mild fibrosis were randomly assigned to receive 8 (n = 41) or 12 (n = 41) weeks of grazoprevir/elbasvir therapy. The primary end point was a sustained virologic response, defined as an HCV RNA level of < 12 IU/mL, at posttreatment week 12 (SVR12). Results. SVR12 was achieved by 87.8% of patients (36 of 41) in the 8-week arm and 100% (41 of 41) in the 8-week arm of the full-analysis population and by 90.0% (36 of 40) and 100% (41 of 41), respectively, in the per-protocol population (all P = .055). In the 8-week arm, a significantly lower SVR12 rate was observed among patients with a high HCV-1b load, defined as >= 1 500 000 IU/mL (79% vs 100%; P =.042), and among those with a baseline Y93H resistance-associated substitution (RAS) frequency of >15% in HCV nonstructural protein 5A (NS5A; 40.0% vs 97.1%; P = .004). Between-group analysis demonstrated that, among patient with a high HCV-1b load and a baseline Y93H RAS frequency of >15%, those in the 8-week arm had a substantially lower SVR12 rate than those in the 12-week arm (40.0% vs 100.0%). All 4 HCV-1b relapses had a Y93H RAS frequency of >99% at posttreatment week 12. Conclusions. Twelve weeks of grazoprevir/elbasvir therapy is highly effective for treatment-naive patients with mild fibrosis. A truncated, 8-week grazoprevir/elbasvir regimen might be applied for those with low viral loads or without a significant NS5A RAS frequency.
Lightweight Torque Sensor Based on a Gradient Grating Period Guided-Mode Resonance Filter
(2019-08-15)
Wang, Yen-Chieh
;
Jang, Wen-Yea
;
Huang, Cheng-Sheno
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機械工程學系
;
Department of Mechanical Engineering
This paper describes the design, fabrication, and testing of a lightweight and compact torque sensor system based on a gradient grating period guided-mode resonance (GGP-GMR) filter and a flexure-elastic-force-sensing element. The GMR filter exhibits a characteristic resonant reflection, when illuminated with a broadband light source at normal incidence. Instead of a fixed grating period, the GGP-GMR filter consists of grating periods varying from 250 to 550 nm with an increment of 2 nm. Given the flexibility of the plastic-based GGP-GMR filter, it can be bent conform to the cylindrical surface of the flexure. The applied torque induced deformation of the flexure and angular displacement of the attached GGP-GMR. For a stationary light source, the angular displacement of the GGP-GMR filter results in illumination at different locations (grating periods), leading to a shift of the resonant reflection wavelength. The magnitude of shift in the reflection wavelength can be correlated to the magnitude of deformation and the applied torque. In addition, commercial software based on the finite element method was used to simulate the proposed design, which indicates that the flexure made of medium-carbon steel can withstand the torque of 35 Nm without yielding. Furthermore, the simulation results (torque-induced deformation) were consistent with those obtained using the proposed torque sensor system. Torque measurements from 0 to 25 Nm showed good linearity. The limit of detection achieved was 0.77 Nm.
【全人口腔衛生照護教育訓練】
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
活隱喻．活博物館──參訪交大藝文中心「六燃文件展」
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
上學期結束前，藝文中心黃桂瑩主任帶著視文所的同學，一起去參訪交大藝文中心舉辦的「六燃文件展」，並邀請到策展人、交通大學應藝所的賴雯淑老師為大家介紹。這個「今夏最有深度的新竹必看展覽」，讓大家看到新竹多樣的一面，也體驗鮮活生動的「新竹生博物館」。
【周成功老師課程講座】～生命是什麼？
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
【營運計畫書撰寫實例】案例分享
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
東協專家齊聚陽明，研討亞太核醫藥品法規
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
核醫藥品近年來已廣泛應用於診斷及治療疾病，為將台灣優質核醫藥品推展至亞太國家，造福有需要之病患，行政院原子能委員會核能研...
Enhanced Dissociation of Hot Excitons with an Applied Electric Field under Low-Power Photoexcitation in Two-Dimensional Perovskite Quantum Wells
(2019-08-15)
Kattoor, Vidya
;
Awasthi, Kamlesh
;
Jokar, Efat
;
Diau, Eric Wei-Guang
;
Ohta, Nobuhiro
The dependence of photoluminescence (PL) on excitation power and the effect of an external electric field have been studied for a two-dimensional (2D) perovskite (C4H9NH3)(2)PbI4 thin-film sample. The efficiency of dissociation of hot excitons to produce free carriers was enhanced with a small excitation power because the relaxation of hot excitons to cold emissive excitons was slow, indicating that the thermal energies of hot carriers can be utilized in solar cells under weak photoirradiation. The dissociation was notably enhanced with an applied electric field, resulting in efficient field-induced quenching of the PL. The present results shed light on an application of 2D perovskite materials to photovoltaic (PV) devices with dim radiation, e.g., for indoor PV applications; the concept of electric field-assisted solar cells might be applicable to next-generation solar cells.
青春熱血「行醫醫定行」，陽明醫學生深入臺東偏鄉見習
(國立陽明大學, 2019-08-15)
陽明電子報編輯小組
陽明首度與臺北榮民總醫院臺東分院合作，利用暑假期間辦理「行醫醫定行」見習課程，讓醫學院學生實際體驗偏鄉醫院工作及作業流程...
Evolution of the local structure and crystal phase for thin ZnGaO films grown by metal organic chemical vapor deposition
(2019-08-15)
Lin, Xiwen
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Chen, Daihua
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Niu, Wenlong
;
Huang, Chiung-Yi
;
Horng, Ray Hua
A systematic investigation is reported to comprehend the atomic and crystal structure of several thin ZnGaO films grown by metal organic chemical vapor deposition method using different flow rates of diethylzinc (DEZn) while keeping triethylgallium and oxygen flow rates constant. The x-ray absorption fine structure analysis has indicated that the local structure of Ga absorbing atom is close to that of beta-Ga2O3 at a lower DEZn flow rate of 30 sccm and transforming to ZnGa2O4 structure at higher 60 sccm. There is a certain proportion of Ga ions that occupies the tetrahedral sites. The ratios of tetrahedral and octahedral Ga species (Ga(t)/Ga(o)) are found to be within 5.5-8.8%. The x-ray diffraction patterns showed the crystal structure of ZnGaO films gradually evolving from monoclinic to cubic phase with an increase of DEZn flow rates from 30 sccm to 60 sccm. One film prepared at 40 sccm displays the best crystalline quality and the other grown at 50 sccm exhibits excellent smooth surface having the lowest root mean square value with a roughness of 0.42 nm. The correlation between atomic and crystal structure and the growth is helpful to understand the formation of single-crystalline ZnGa2O4 and its physical mechanism.