Browsing by Issue Date, starting with "2020-06-05"

Now showing 1 - 20 of 4820

A fluorescent turn-on probe for detection of hypochlorus acid and its bioimaging in living cells
(2020-06-05)
Chu, Chien-Ju
;
Wu, Guan-Syuan
;
Ma, Ho-I
;
Venkatesan, Parthiban
;
Thirumalaivasan, Natesan
Hypochlorous acid has played several functions in the biological system. However, excess HOCI can cause damage to biomolecules and result in some diseases. Accordingly, a new fluorescent probe, BSP, has been developed for fast recognition of HOCI through the HOG-induced oxidation of methyl phenyl sulfide to sulfoxide. The reaction of BSP with HOG caused a 22-fold fluorescence enhancement (quantum yield increase from 0.006 to 0.133). The detection limit of HOCI is found to be 30 nM (S/N = 3). The fluorescence enhancement is due to the suppression of the photo-induced electron transfer from the methyl phenyl sulfide moiety to BODIPY. Eventually, the cellular fluorescence imaging experiment showed that BSP could be effectively used for monitoring HOCI in living cells. (C) 2020 Elsevier B.V. All rights reserved.
Vacuum ultraviolet photolysis of CH4:O-2 ice mixtures and the formation of CO and CO2
(2020-06-05)
Chou, Sheng-Lung
;
Lin, Meng-Yeh
;
Huang, Tzu-Ping
;
Wu, Yu-Jong
;
應用化學系
Vacuum ultraviolet (VUV) photolysis of CH4:O-2 ice mixtures at 10 K using 121.6, 157, and 170-nm wavelengths was performed to examine photochemical reactions for the oxidation of hydrocarbon species. Ice samples with three component ratios were prepared: CH4-dominated (CH4:O-2 = 100:1), mixed (CH4:O-2 = 1:1), and O-2-dominated (CH4:O-2 = 1:100) ice samples. Photochemical behavior with dependence on the photolysis wavelength and component ratio was observed. In addition, the column densities of CO and CO2 formed by the VUV photolysis of the three ice samples and the abundance ratios of CO and CO2 as a function of the photon dosage and photolysis wavelength were examined. The results may imply a correlation between the unknown depletion of interstellar oxygen and the formation of CO and CO2. (C) 2020 Elsevier B.V. All rights reserved.
Formation and infrared spectra of monohydrogenated pyrenes 2-C16H11 and 4-C16H11 trapped in solid para-hydrogen
(2020-06-05)
Bahou, Mohammed
;
Chou, Sheng-Lung
;
Wu, Yu-Jong
;
應用化學系
;
應用化學系分子科學碩博班
We recorded the IR spectra of 2-C16R11 and 4-C16R11 trapped in solid para-hydrogen (p-H-2). These species were produced on the electron bombardment of p-H-2 containing pyrene (C16H10) in a small proportion during matrix deposition. IR absorption features of 1-C16H11+ and 1-C16H11 in solid p-H-2 were previously identified [J. Phys. Chem. Lett. 4 (2013) 1989]. Here, the irradiation of a similar matrix sample at 365 nm depleted 1-C(16)H(11)(+ )and 2-C16H11 and produced 1-C16H11 and 4-C16H11. In contrast, irradiation at 405 nm decreased 1-C16H11+, 2-C16H11 and 4-C16H11. The identification of the observed lines of 2-C16H11, and 4-C16H11 was supported by predictions of the vibrational wavenumbers and relative IR intensities at the B3PW91/6-311++G(2d,2p) level of theory. (C) 2020 Elsevier B.V. All rights reserved.
Manipulating magnetoelectric energy landscape in multiferroics
(2020-06-05)
Huang, Yen-Lin
;
Nikonov, Dmitri
;
Addiego, Christopher
;
Chopdekar, Rajesh, V
;
Prasad, Bhagwati
Magnetoelectric coupling at room temperature in multiferroic materials, such as BiFeO3, is one of the leading candidates to develop low-power spintronics and emerging memory technologies. Although extensive research activity has been devoted recently to exploring the physical properties, especially focusing on ferroelectricity and antiferromagnetism in chemically modified BiFeO3, a concrete understanding of the magnetoelectric coupling is yet to be fulfilled. We have discovered that La substitutions at the Bi-site lead to a progressive increase in the degeneracy of the potential energy landscape of the BiFeO3 system exemplified by a rotation of the polar axis away from the < 111 > (pc) towards the < 112 > (pc) discretion. This is accompanied by corresponding rotation of the antiferromagnetic axis as well, thus maintaining the right-handed vectorial relationship between ferroelectric polarization, antiferromagnetic vector and the Dzyaloshinskii-Moriya vector. As a consequence, La-BiFeO3 films exhibit a magnetoelectric coupling that is distinctly different from the undoped BiFeO3 films. BiFeO3 has a wide application but the impact of rare-earth substitution for the evolution of the coupling mechanism is unknown. Here, the authors reveal the correlation between ferroelectricity, antiferromagnetism, a weak ferromagnetic moment, and their switching pathways in La-substituted BiFeO3.
大學校園裡的剩食議題
(2020-06-07)
高儷玲
;
Department of Communication and Technology
;
傳播與科技學系
【台灣剩食大解密】專題

剩食議題是個需要被正視的問題，大多數人認為廚餘是一種回收，因此倒廚餘並不會有愧疚感，但食物浪費卻是傷害環境的元兇之一。
數位身分證比你想像的還要危險
(2020-06-07)
詹庭瑄
;
Department of Communication and Technology
;
傳播與科技學系
【資安戰的未爆彈　專題】

原本預計2020年10月全台要更換數位身分證（eID），卻因疫情嚴峻，無法順利在原訂時程引進國外的高防偽晶片技術，因而推延換發。而換發數位身分證對於台灣的必要性，需要考量到政府是否能保證資安的完整性，否則全台個資上傳網路，一但被駭，將是必是一大危機。
台灣OTT的內憂與外患
(2020-06-07)
廖玥茹
;
Department of Communication and Technology
;
傳播與科技學系
【OTT席捲全球　台灣準備好了嗎】專題

科技使民眾收視行為改變，線上影音平台的前景一片光明，但台灣本土OTT業者得面對大國競爭、無法律規範等困境。在OTT的巨浪下，台灣真的準備好了嗎？
山林解禁　親近山林更容易
(2020-06-07)
王冠云
;
Department of Communication and Technology
;
傳播與科技學系
【向山致敬　認識台灣】專題

山脈是台灣主要的地形，認識山脈才算認識台灣。行政院所推出的山林解禁政策的五個主軸真的能讓民眾更願意親近山林嗎？
全台農夫市集在哪裡？
(2020-06-07)
邱欣誼
;
Department of Communication and Technology
;
傳播與科技學系
【台灣農夫市集知多少】專題

你知道台灣哪裡有農夫市集？又有哪些認證標章呢？農夫市集推廣農食共生、產銷履歷透明的農產品，希望在輔助在地小農之餘，也帶給民眾安心的農產品。
總編輯的話
(2020-06-07)
楊詠嵐
;
Department of Communication and Technology
;
傳播與科技學系
本期為喀報341期，總共有6篇報導。其中有3篇文化現象，2篇社會議題，1則影音新聞。本期頭題為邱于非的《跨國送養　浪浪回家的專機》，題材新穎，內容也引人入勝，對此議題的探討也足夠深入。本期其他篇專題文章也都有深入淺出的探討，值得一讀。
台灣資源班　資源卻缺乏？
(2020-06-07)
黃博暄
;
Department of Communication and Technology
;
傳播與科技學系
【台灣資源班現況】專題

資源班對於學習較為遲緩的兒童，是找回學習信心的核心場所，但現今台灣的資源班，卻可能有資源分配上面的不足，導致教學效率較不彰的問題。
跨國送養　浪浪回家的專機
(2020-06-07)
邱于非
;
Department of Communication and Technology
;
傳播與科技學系
【跨國送養　浪浪遠渡重洋找家】專題

現今社會中，動物保護、流浪動物關懷等意識越來越普及，其中「浪浪」就是台灣對流浪動物的暱稱。而現階段除了公家單位的收容、認養，也有許多民間單位在為浪浪而盡心盡力。其中跨國送養就是讓流浪動物獲得終身歸宿的管道之一，雖然成本高、程序複雜，但仍有不少民間團體堅持執行，不放過任何可以替浪浪找到家的機會。
《師聲對決》（Le Brio）
(國立陽明大學, 2020-06-11)
黃柏威
;
陽明電子報編輯小組
Exploiting analogue OxRAM conductance modulation for contrast enhancement application
(2020-06-11)
Kumar, A.
;
Bezugam, S. S.
;
Hudec, B.
;
Hou, T. -H.
;
Suri, M.
The authors present a unique application of analogue oxide-based resistive memory (OxRAM) device for sensor-level information storage and computation. They show that quality of low-contrast images in low-light can be improved by carefully exploiting OxRAM conductance modulation from specific bi-layer OxRAM material stacks. The proposed methodology involves conversion of light intensity to pulse frequency followed by resistance encoding as different non-volatile OxRAM resistance states.
【食品安全法規及管理科學】電影賞析座談～Food Evolution
(國立陽明大學, 2020-06-11)
陽明電子報編輯小組
本項座談，藉由影片賞析，讓正反雙方提出科學數據意見，探討基
【3D列印之醫療應用】2020陽明大學與交通大學暑期共授課程
(國立陽明大學, 2020-06-11)
陽明電子報編輯小組
本課程為2020年陽明大學與交通大學共同開設之大學部暑期課程
【109年動物飼養管理課程】
(國立陽明大學, 2020-06-11)
陽明電子報編輯小組
課程內容為動物飼養管理基本知識及實際操作技能。日
病毒學及肝炎肝癌權威陳培哲院士蒞校演講
(國立陽明大學, 2020-06-11)
陽明電子報編輯小組
中研院陳培哲院士傳承台灣肝炎之父宋瑞樓院士與陳定信院士、廖運範院士，全心投入肝病之研究，為台灣病毒學及肝炎肝癌權威。
Circular Polarization Dynamics during Magnetic Polaron Formation in Type-II Magnetic Quantum Dots
(2020-06-11)
Barman, Biplob
;
Pientka, James M.
;
Murphy, Joseph R.
;
Cartwright, Alexander N.
;
Chou, Wu-Ching
We used time-resolved photoluminescence spectroscopy to study the circular polarization dynamics of magnetic polarons in type-II (Zn,Mn)Te/ZnSe quantum dots in the presence of an external magnetic field. We investigated the time evolution of the peak energy of the sigma(+) and sigma(-) circularly polarized photoluminescence components and of the circular polarization of the emitted light. We also observed that the value of circular polarization, at long delay times, increases with magnetic field. We found that this system exhibits unexpected characteristics, such as different time scales for the formation of the magnetic polaron, on the one hand, and the evolution of photoluminescence circular polarization, on the other hand. These results are discussed within the framework of a theoretical model developed to describe the dependence of magnetic susceptibility as a function of temperature.
「我們也是創造歷史的一群人」──《默念你們的名》策展人專訪
(國立陽明大學, 2020-06-11)
陽明電子報編輯小組
甫於藝空間落幕的《默念你們的名》特展，是由十字軍社、青幼社、勵青社、口衛隊、台東書屋、成長營等八支服務隊，共同舉辦的服務隊聯展。本次展覽策展人是目前就讀醫學系大五並擔任十字軍社長的洪邦喻同學。從一開始的事前規畫、視覺設計、展覽品挑選、文件檔案整理到展場佈置，幾乎是他一手包辦，真的讓人非常佩服。因此，這次藝文中心以文字稿的方式訪問策展人邦喻，讓他跟大家分享一下策展的過程與點滴。