Browsing by Issue Date, starting with "2015-05-26"

Now showing 1 - 20 of 21679

Mir-17 similar to 92 Governs Motor Neuron Subtype Survival by Mediating Nuclear PTEN
(2015-05-26)
Tung, Ying-Tsen
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Lu, Ya-Lin
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Peng, Kuan-Chih
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Yen, Ya-Ping
;
Chang, Mien
Motor neurons (MNs) are unique because they project their axons outside of the CNS to innervate the peripheral muscles. Limb-innervating lateral motor column MNs (LMC-MNs) travel substantially to innervate distal limb mesenchyme. How LMC-MNs fine-tune the balance between survival and apoptosis while wiring the sensorimotor circuit en route remains unclear. Here, we show that the mir-17 similar to 92 cluster is enriched in embryonic stem cell (ESC)derived LMC-MNs and that conditional mir-17 similar to 92 deletion in MNs results in the death of LMC-MNs in vitro and in vivo. mir-17 similar to 92 overexpression rescues MNs from apoptosis, which occurs spontaneously during embryonic development. PTEN is a primary target of mir-17 similar to 92 responsible for LMC-MN degeneration. Additionally, mir-17 similar to 92 directly targets components of E3 ubiquitin ligases, affecting PTEN subcellular localization through monoubiquitination. This miRNA-mediated regulation modulates both target expression and target subcellular localization, providing LMC-MNs with an intricate defensive mechanism that controls their survival.
Finger-gate manipulated quantum transport in Dirac materials
(2015-05-27)
Kleftogiannis, Ioannis
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Tang, Chi-Shung
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Cheng, Shun-Jen
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電子物理學系
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Department of Electrophysics
We investigate the quantum transport properties of multichannel nanoribbons made of materials described by the Dirac equation, under an in-plane magnetic field. In the low energy regime, positive and negative finger-gate potentials allow the electrons to make intra-subband transitions via hole-like or electron-like quasibound states (QBS), respectively, resulting in dips in the conductance. In the high energy regime, double dip structures in the conductance are found, attributed to spin-flip or spin-nonflip inter-subband transitions through the QBSs. Inverting the finger-gate polarity offers the possibility to manipulate the spin polarized electronic transport to achieve a controlled spin-switch.
Deep ultraviolet laser direct write for patterning sol-gel InGaZnO semiconducting micro/nanowires and improving field-effect mobility
(2015-05-27)
Lin, Hung-Cheng
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Stehlin, Fabrice
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Soppera, Olivier
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Zan, Hsiao-Wen
;
Li, Chang-Hung
Deep-UV (DUV) laser was used to directly write indium-gallium-zinc-oxide (IGZO) precursor solution and form micro and nanoscale patterns. The directional DUV laser beam avoids the substrate heating and suppresses the diffraction effect. A IGZO precursor solution was also developed to fulfill the requirements for direct photopatterning and for achieving semi-conducting properties with thermal annealing at moderate temperature. The DUV-induced crosslinking of the starting material allows direct write of semi-conducting channels in thin-film transistors but also it improves the field-effect mobility and surface roughness. Material analysis has been carried out by XPS, FTIR, spectroscopic ellipsometry and AFM and the effect of DUV on the final material structure is discussed. The DUV irradiation step results in photolysis and a partial condensation of the inorganic network that freezes the sol-gel layer in a homogeneous distribution, lowering possibilities of thermally induced reorganization at the atomic scale. Laser irradiation allows high-resolution photopatterning and high-enough field-effect mobility, which enables the easy fabrication of oxide nanowires for applications in solar cell, display, flexible electronics, and biomedical sensors.
MULTIPLE-INTERFACE NETWORK DEVICE AND SELECTION METHOD FOR TRANSMITTING NETWORK PACKETS
(2015-05-28)
Yang Shun-Neng
;
Gan Chai-Hien
;
Lin Yung-Chun
;
Lin Yi-Bing
A selection method for transmitting network packets adapted to be executed by a multiple-interface network device is provided. The multiple-interface network device includes a plurality of network interfaces. Each of the network interfaces connects to one of multiple communication networks. The selection method includes the following steps: collecting a transmission status of each of the communication networks; analyzing transmission characteristics of a predetermined number of packets of a service flow to determine a traffic pattern type of the service flow; comparing the transmission status of each of the communication networks with the transmission requirements of the traffic pattern type of the service flow to select one of the network interfaces, and using the selected network interface to transmit packets of the service flow. The service flow is constituted by packets transmitted by the network interfaces through a port and packets received by the network interfaces through the same port.
Ultrabroadband Midinfrared Pump-Probe Spectroscopy Using Chirped-Pulse Up-conversion in Gases
(2015-05-28)
Shirai, Hideto
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Yeh, Tien-Tien
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Nomura, Yutaka
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Luo, Chih-Wei
;
Fuji, Takao
We demonstrate ultrabroadband and ultrafast midinfrared (MIR) pump-probe spectroscopy by employing the chirped-pulse up-conversion technique with four-wave difference-frequency generation in a gas. The full spectra of the MIR probe pulses, which spread from 200 to 5000 cm(-1), are recorded on a single-shot basis. We apply this MIR pump-probe spectroscopy to measure the ultrafast carrier dynamics of an intrinsic germanium crystal wafer. Ultrafast reflectivity change induced by the excitation of carriers is observed in the region from far to near infrared. The behavior of the reflectivity-change signals at each delay time is explained by the Drude model.
總編輯的話
(2015-05-31)
黃詩涵
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Department of Communication and Technology
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傳播與科技學系
本期喀報為二一七期，共十六篇稿件，其中有兩篇影像新聞、兩篇廣播新聞、五篇動畫、三篇新聞圖表、四篇文字，題材相當多元。
旅外球員　客居他鄉的英雄
(2015-05-31)
郭穎慈
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Department of Communication and Technology
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傳播與科技學系
許多運動員為了追求更好的環境，或者追求夢想，到國外的職業聯盟打球，形成一股旅外風潮。
婚禮文化　各國面面觀
(2015-05-31)
劉雨婕
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Department of Communication and Technology
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傳播與科技學系
一覽世界各國千奇百怪，卻十足展現當地人文風俗的婚禮文化。
夜奔客棧　結合武術人生
(2015-05-31)
林燕婷
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Department of Communication and Technology
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傳播與科技學系
黃鴻璽，一個熱愛武術的臺灣人，為了尋找武術的源頭，開啟他的創業之路。
日文KTV　現身臺灣
(2015-05-31)
簡品心
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Department of Communication and Technology
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傳播與科技學系
近年來，即使是臺灣地區，也有提供客人歌唱日本流行歌的日文KTV，卻正面臨市場飽和的困境。
臺灣高等教育　何去何從
(2015-05-31)
黃馨儀
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Department of Communication and Technology
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傳播與科技學系
教育部五年五百億計畫能提升高等教育品質仍存疑，臺灣政策導向為教師大量生產研究，以換取經費與光環。
客家紙傘朵朵開
(2015-05-31)
余念竹
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Department of Communication and Technology
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傳播與科技學系
介紹客家油紙傘的起源與文化內涵。
孩子愛電視　節目如何選
(2015-05-31)
林霈楨
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Department of Communication and Technology
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傳播與科技學系
兒少每周平均花十點四個小時看電視，節目的選擇顯得相當重要，因此臺灣媒體觀察教育基金會每年都會評選出適合兒童觀賞的優良節目，並將合格節目以適齡標章細分，然而青少年節目卻沒有這樣完善的制度。
演員實境　不為人知的辛苦
(2015-05-31)
沈祖廷
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Department of Communication and Technology
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傳播與科技學系
從《S.O.P Seekers of performance》舞台劇透過幽默諷刺的手法，呈現演員不為人知的一面，延伸探討臺灣演員所遇到的困境。
「心」苦生活　身體發警訊
(2015-05-31)
李恬芳
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Department of Communication and Technology
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傳播與科技學系
心身症是一種由工作、人際關係等情緒壓力所引發的身體症狀，您是否生活緊張、心中焦慮、難以入眠呢？
學生畢展　臺灣文化新生命
(2015-05-31)
包金
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林霈楨
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Department of Communication and Technology
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傳播與科技學系
臺灣大學生畢業成果展覽，展現出對本土文化關懷和創新。
科技無極限　掀開彩妝新頁
(2015-05-31)
黃苡齊
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Department of Communication and Technology
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傳播與科技學系
彩妝產業積極與科技結合，試圖推動全新的產業趨勢，讓科技再一次驚艷大眾。
我是一個不宅的宅男
(2015-05-31)
賴奕安
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Department of Communication and Technology
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傳播與科技學系
認識我的人都知道我宅，剛認識我的人說我竟然很宅，不認識我的人說我看起來不宅。到底怎麼樣才是不宅的宅男。
登山熱潮　健康安全並行
(2015-05-31)
許鴻財
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Department of Communication and Technology
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傳播與科技學系
介紹臺灣六大登山熱門景點，完善的行前準備與安全知識，一起享受健康生活。
跨性別者　勇敢做自己
(2015-05-31)
陳致穎
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Department of Communication and Technology
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傳播與科技學系
來自宜蘭的跨性別者Bob，跨出勇敢的步伐，用穿著、打扮等實際行動，希望讓更多人看見且尊重跨性別族群。