Browsing by Issue Date, starting with "2013-10-18"

Now showing 1 - 20 of 30358

An in situ fabrication process for highly electrical conductive polyimide/MWCNT composite films using 2,6-diaminoanthraquinone
(2013-10-18)
Huang, Yi-Chia
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Lin, June-Hua
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Tseng, I-Hsiang
;
Lo, An-Ya
;
Lo, Teng-Yuan
We present a valuable in situ fabrication process for synthesizing high electrical conductive polyimide/multiwalled carbon nanotube (PI/MWCNT) composite films. The success of this process was achieved the addition of 2,6-diaminoanthraquinone (DAAQ). The DAAQ is not only an excellent dispersion agent to stably disperse pristine MWCNTs in solvent but also a monomer to directly synthesize PI. The strong interaction between DAAQ with MWCNT was verified by FTIR, UV-Vis, Raman, and fluorescence spectra. The highest value of electrical conductivity of 55.6 S/cm are achieved by the PI composite containing 40 wt.% of MWCNT. Moreover, the electrical conductivity of this film further enhanced to 106 S/cm after the thermal compression process. The MWCNT content at the percolation threshold of conductivity is 0.50 wt.% (or 0.32 vol.%) and the critical exponent is equal to 2.52. The developed in situ fabrication process through DAAQ-derived molecules can also be applied to synthesize other polymers requiring diamine structure. (C) 2013 Published by Elsevier Ltd.
Synthesis and Molecular Properties of Four Isomeric Dialkylated Angular-Shaped Naphthodithiophenes
(2013-10-18)
Cheng, Sheng-Wen
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Chiou, De-Yang
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Lai, Yu-Ying
;
Yu, Ruo-Han
;
Lee, Chia-Hao
A new strategy to synthesize 4,9- and 5,10-dialkylated alpha-aNDTs as well as 4,9- and 5,10-dialkylated beta-aNDTs is described. Four isomeric precursors with different dithienyl-ene-diyne arrangements undergo base-induced double 6 pi-cyclization to construct the central naphthalene cores, leading to the formation of the regiospecific products. These 2,7-distannylated dialkylated aNDT-based monomers can be used for Stille cross-coupling to produce promising conjugated materials for various optoelectronic applications.
Tandem Isomerization and C-H Activation: Regioselective Hydroheteroarylation of Allylarenes
(2013-10-18)
Lee, Wei-Chih
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Wang, Chun-Han
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Lin, Yung-Huei
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Shih, Wei-Chun
;
Ong, Tiow-Gan
The first Ni-promoted prototype reaction based on the tandem C-H activation of heteroarenes with alkene isomerization is demonstrated, leading to the branched hydroheteroarylation products. Simultaneously, the reaction selectivity can be chemically switched to linear adducts through Ni-Al tandem catalysis.
Crystal Structures of Vertebrate Dihydropyrimidinase and Complexes from Tetraodon nigroviridis with Lysine Carbamylation METAL AND STRUCTURAL REQUIREMENTS FOR POST-TRANSLATIONAL MODIFICATION AND FUNCTION
(2013-10-18)
Hsieh, Yin-Cheng
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Chen, Mei-Chun
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Hsu, Ching-Chen
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Chan, Sunney I.
;
Yang, Yuh-Shyong
Lysine carbamylation, a post-translational modification, facilitates metal coordination for specific enzymatic activities. We have determined structures of the vertebrate dihydropyrimidinase from Tetraodon nigroviridis (TnDhp) in various states: the apoenzyme as well as two forms of the holoenzyme with one and two metals at the catalytic site. The essential active-site structural requirements have been identified for the possible existence of four metal-mediated stages of lysine carbamylation. Only one metal is sufficient for stabilizing lysine carbamylation; however, the post-translational lysine carbamylation facilitates additional metal coordination for the regulation of specific enzymatic activities through controlling the conformations of two dynamic loops, Ala(69)-Arg(74) and Met(158)-Met(165), located in the tunnel for the substrate entrance. The substrate/product tunnel is in the open form in the apo-TnDhp, in the intermediate state in the monometal TnDhp, and in the closed form in the dimetal TnDhp structure, respectively. Structural comparison also suggests that the C-terminal tail plays a role in the enzymatic function through interactions with the Ala(69)-Arg(74) dynamic loop. In addition, the structures of the dimetal TnDhp in complexes with hydantoin, N-carbamyl--alanine, and N-carbamyl--amino isobutyrate as well as apo-TnDhp in complex with a product analog, N-(2-acetamido)-iminodiacetic acid, have been determined. These structural results illustrate how a protein exploits unique lysines and the metal distribution to accomplish lysine carbamylation as well as subsequent enzymatic functions.
Tuning Reactivity of Glycosyl Imidinium Intermediate for 2-Azido-2-deoxyglycosyl Donors in alpha-Glycosidic Bond Formation
(2013-10-18)
Ingle, Arun B.
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Chao, Chin-Sheng
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Hung, Wei-Cheng
;
Mong, Kwok-Kong Tony
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應用化學系
The chemical properties of nucleophile additives were investigated in a modulated glycosylation context. N-Formylmorpholine (NFM) was found to be an effective modulator for glycosylation with less reactive 2-azido-2-deoxythioglucosyl and thiogalactosyl donors.
快閃音樂會　古典樂上街頭
(2013-10-20)
李孟東
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Department of Communication and Technology
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傳播與科技學系
快閃（flashmob）一詞最早源於二○○三年的美國紐約曼哈頓地區，並且由美洲大陸傳播至歐洲、亞洲等地區。拜網際網路和社群網站的蓬勃發展所賜，街頭快閃行動已有將近十年的發展，並且成為一種獨特的文化風格。而快閃音樂會正是古典音樂與快閃運動結合並誕生出另一種獨特的音樂表演形式。
選秀節目　蔓延兒童圈
(2013-10-20)
黃筱雯
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Department of Communication and Technology
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傳播與科技學系
選秀節目蓬勃發展，兒童參加選秀節目的機會也越來越多。例如：《超級偶像七》中的張龍和《超級接班人》節目裡的PopCorn都是節目中年紀最小的參賽者。兒童參加選秀節目，對於電視台、觀眾、參賽者本身有什麼樣的影響呢？
勿貼標籤　尊重多元性傾向
(2013-10-20)
王怡方
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Department of Communication and Technology
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傳播與科技學系
雙性戀既喜歡男生也能喜歡女生，聽起來在愛情市場裡挑對象無往不利，彷彿全世界都是他們的狩獵場。他們難道就這樣躋身為人生勝利組，無憂無慮？
為愛接力　突破生命
(2013-10-20)
陳佩瑄
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陳彥文
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Department of Communication and Technology
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傳播與科技學系
十月十九號上午，在台北大佳河濱公園有一場不一樣的路跑活動：愛的接力，為希望而跑，器捐接力馬拉松。現場除了有大批民眾熱情支持外，主辦單位還找來譚艾珍、歐陽靖母女代言，呼籲民眾一起來做器官捐贈。
城市獵人　騎著單車去尋寶
(2013-10-20)
韓惠宇
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林凱元
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Department of Communication and Technology
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傳播與科技學系
新竹市政府為了讓民眾了解定向越野這項運動，結合了單車與地點的尋寶活動，讓大家深入了解定向越野的意義，也看看新竹不同的風光。
唱出新滋味　不打「科」睡
(2013-10-20)
林婉婷
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Department of Communication and Technology
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傳播與科技學系
總是有背不完的公式、化學式、生物構造，科學因此艱深難懂，用唱的讓這一切變得簡單又有趣。
老店巡禮　大稻程百年記憶
(2013-10-20)
林妍君
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Department of Communication and Technology
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傳播與科技學系
尋訪大稻程歷史悠久的店家故事、探索台灣早期容極一時的商業聚落，透過大稻程「妙會」生活展，都市裡新與舊的相遇火花一觸即發。
搖滾硬地　場地也瘋狂
(2013-10-20)
李盈如
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柯惠文
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Department of Communication and Technology
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傳播與科技學系
十月十七號晚上，一場獨立音樂界的盛事，硬地音樂校園巡迴在交通大學活動中心演藝廳熱鬧登場。在交大星聲社的暖場後，藝人們以刺激的聲光表現，帶來精采熱血的演出。然而，此次場地限制導致原先預定前來表演的樂團取消行程，不少觀眾與藝人也表示不慎滿意。
現代麥可　風靡「權」球
(2013-10-20)
高紫娟
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Department of Communication and Technology
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傳播與科技學系
在這股韓流風潮中，以獨特的說唱殺出一條血路，會唱會跳又能夠一手包辦詞曲製作。不只想當一個花瓶偶像，權志龍用歌詞訴說想法，用音樂旋律向大家證明自己的能力。
重量級原音　唱進心坎裡　
(2013-10-20)
劉冠伶
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Department of Communication and Technology
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傳播與科技學系
渾厚嗓音與樸實詞句，純粹且平實地呈現她想傳達的信念，巴奈用簡單的表演形式，創造不簡單的感動，曲曲唱入人心，撼動的不只是聽眾的情緒，同時也激起對於社會現況的反思。
小林村夜祭　大武壠回歸
(2013-10-20)
陳祥豪
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Department of Communication and Technology
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傳播與科技學系
每年的農曆九月十五日是太祖的生日，小林村的居民會祭拜太祖，酬謝祂的保護庇佑，並請祂一同下來飲酒跳舞；但經歷八八風災之後，小林村分裂成三個聚落，但每年的這個時候，還是會回到這裡，讓夜祭增添了新的意義。
總編輯的話
(2013-10-20)
陳聖文
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Department of Communication and Technology
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傳播與科技學系
本次第一七一期喀報總共十九篇作品，以即時新聞篇數最多。即時新聞的主題選擇豐富，有復古遊行、接力馬拉松、硬地音樂以及腳踏車定向越野，逐漸地讓喀報更添多元色彩。但是在記者stand的流暢度上尚須加強。
人工受孕　幸福選擇題
(2013-10-20)
游瑀萱
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Department of Communication and Technology
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傳播與科技學系
《幸福孕不孕》是一部以色列的紀錄片，片中的主人翁奧麗和蓋，是以色列知名的新聞主播夫妻檔，他們決定踏上人工受孕的療程，並且拍下這些私密的過程和心路歷程，希望能夠引發大眾對於不孕症議題的關注。
推理劇新型態　不只有解謎
(2013-10-20)
蔡乙佳
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Department of Communication and Technology
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傳播與科技學系
從古至今，從東方到西洋，不論是以何種方式流傳或出版，辦案、推理的故事一直都是膾炙人口，令人想一看再看。而這股風潮至今仍持續延燒，一路蔓延到二○一三年最火紅的日劇之一：《破案天才伽利略2013》。
老薇與她的必取朋友們
(2013-10-20)
江欣薇
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Department of Communication and Technology
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傳播與科技學系
這天是二〇三〇年的某天，距離約定時間越來越近。六人行闊別大學生涯以後，終於再度相聚了。咖啡館裡播放著的是屬於六人行大學時代流行的音樂。坐在落地窗旁，倒影中的老薇撥了撥頭髮，她實在是太期待今天的到來了。