Browsing by Issue Date, starting with "2013-03-07"

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Effects of Hydrogen Bonding on Internal Conversion of GFP-like Chromophores. II. The meta-Amino Systems
(2013-03-07)
Cheng, Chi-Wen
;
Huang, Guan-Jhih
;
Hsu, Hung-Yu
;
Prabhakar, Ch.
;
Lee, Yuan-Pern
To rationalize the efficient quenching of the fluorescence and the Z -> E photoisomerization of m-ABDI, the meta-amino analogue of the green fluorescent protein (GFP) chromophore, in protic solvents, the femtosecond time-resolved fluorescence and transient infrared (TRIR) spectra of m-ABDI in CD3CN, CH3OH, and CD3OD are determined. For solutions in CD3CN, the fluorescence decay lifetime is similar to 7.9 ns and IR absorption lines near 1513, 1531, 1557, and 1613 cm(-1) of m-ABDI in its electronically excited state were observed with a decay time >5 ns. For solutions in CH3OH, the fluorescence decay is double exponential with time constants of similar to 16 and 62 ps. In addition to IR absorption lines of m-ABDI in its electronically excited state with a decay time of similar to 16 ps, new features near 1513, 1532, 1554, and 1592 cm(-1) were observed to have a rise time of similar to 19 ps and a decay constant of similar to 58 ps, indicating formation of an intermediate. The assignments for the IR spectra of the ground and excited states were assisted with DFT and TDDFT calculations, respectively. We conclude that the torsion of the exocyclic C=C bond (the tau torsion) is responsible for the nonradiative decay of electronically excited m-ABDI in CD3CN. However, in CH3OH and CD3OD, the solute-solvent hydrogen bonding (SSHB) interactions diminish significantly the barrier of the tau torsion and induce a new pathway that competes successfully with the tau torsion, consistent with the efficient fluorescence quenching and the diminished yield for Z -> E photoisomerization. The new pathway is likely associated with excited state proton transfer (ESPT) from the solvent to m-ABDI, particularly the carbonyl group, and generates an intermediate (ESPT*) that is weakly fluorescent.
Effects of Hydrogen Bonding on Internal Conversion of GFP-like Chromophores. I. The para-Amino Systems
(2013-03-07)
Huang, Guan-Jhih
;
Cheng, Chi-Wen
;
Hsu, Hung-Yu
;
Prabhakar, Ch.
;
Lee, Yuan-Pern
To understand the effects of solvent-solute hydrogen bonding (SSHB) on the excited-state dynamics of two GFP-like chromophores, p-ABDI and p-CFABDI, we have determined the quantum yields for fluorescence (Phi(f)) and the isomerization Z -> E (Phi(ZE)) and the femtosecond fluorescence and transient infrared absorption in selected solvents. The behavior that Phi(ZE) congruent to 45 0.50 in aprotic solvents, such as CH3CN, indicates that the E-Z photoisomerization adopts a one-bond-flip mechanism through the torsion of the exocyclic C=C bond (the tau torsion) to form a perpendicular species (tau similar to 90 degrees) in the singlet excited state followed by internal conversion (IC) to the ground state and partition to form the E and Z isomers with equal probabilities. The observed Phi(ZE) decreased from 0.50 to 0.15-0.28 when CH3CN was replaced with the protic solvents CH3OH and CF3CH2OH. In conjunction with the solvent-independent rapid (<1 ps) kinetics for the fluorescence decay and the solvent-dependent slow (7-20 ps) kinetics for the ground-state recovery, we conclude that the SSHB modifies the potential energy surface for the tau torsion in a way that the IC occurs also for the twisted intermediates with a tau-torsion angle smaller than 90 degrees, which favors the formation of the Z isomers. The possibility of IC induced by torsion of the exocyclic C-C bond (the phi torsion) is also considered but excluded.
MICROALGAE CULTIVATION MODULE
(2013-03-07)
Lin Chih-Sheng
;
Chiu Sheng-Yi
;
Kao Chien-Ya
A microalgae cultivation module for carbon reduction and biomass production is provided, which includes a first photobioreactor set, a second photobioreactor set, a gas switching device and a control unit. The gas switching device is communicated to the first and the second photobioreactor sets. The control unit is coupled to and controls the gas switching device, thereby aerating a waste gas into the first photobioreactor set and aerating air into the second photobioreactor set for a first predetermined time, then aerating the waste gas into the second photobioreactor set and aerating the air into the first photobioreactor set for a second predetermined time. The first and the second photobioreactor sets include a microalgae species.
WASTEWATER TREATMENT METHOD USING ANNULARLY ARRANGED MICROORGANISM CARRIERS
(2013-03-07)
LEE Der-Ming
;
Chiang Ming-Kuei
;
Chen Chin-Te
;
Sung Keng-Chuan
;
Lin Jih-Gaw
A wastewater treatment method using annularly arranged microorganism carriers in a reaction tank, which defines therein an upper reaction area, a lower reaction area and a passage area surrounded by the microorganism carriers and kept in communication between the upper reaction area and the lower reaction area. Microorganisms including nitrifying bacteria and autotrophic denitrifying bacteria are attached to the surface of each microorganisms carriers and suspending in the water of the reaction tank for causing Anammox reaction to convert NH4+ and NO2− in wastewater into nitrogen gas, achieving removal of total nitrogen compounds from water. The microorganism carriers are used to retain microorganisms in the reaction tank, enhancing the treatment efficiency.
搖滾樂團知多少
(2013-03-10)
王泓文
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Department of Communication and Technology
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傳播與科技學系
介紹搖滾樂團史，以及一個基本的搖滾樂團人員配置，各位置使用的樂器，還有歷史上有名的國內外搖滾樂手。
戲劇藝文活動之城鄉差距
(2013-03-10)
鄭豪
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Department of Communication and Technology
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傳播與科技學系
文化部將所有藝文活動展演劃分為十三種項目，而戲劇類就是其中之一，利用此圖表可看出台灣之戲劇類藝文活動數量的不足與城鄉差距。
SOHO族　舒服過生活
(2013-03-10)
林妍君
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Department of Communication and Technology
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傳播與科技學系
有這樣一種工作型態，讓人們不用朝九晚五到公司打卡，不用日復一日駛過上班必經的塞車路段。工作的時間由自己決定，而工作內容更可以自由挑選，每個人都能藉此當自己的老闆，他們不是任何人的員工。
世界真的和平嗎
(2013-03-10)
張睿文
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Department of Communication and Technology
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傳播與科技學系
第二次世界大戰之後，大範圍或全面性的戰爭隨之結束，世界進入了相對和平的年代。可是戰爭並未結束，在局部或地方的紛爭仍未止息。
減少垃圾　愛護地球
(2013-03-10)
朱寶欣
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Department of Communication and Technology
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傳播與科技學系
環保已經是世界性的議題，雖然人們都知道要愛護地球，但是很多觀念停留在表面，缺少有效的實行方法。《亞洲環保先鋒》展示了新穎的環保技術，為環保作出更大的貢獻。
老屋重生　文化復興
(2013-03-10)
李佩玹
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Department of Communication and Technology
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傳播與科技學系
台南府城，道路熱鬧熙攘，孔廟、全台首學、安平古堡、赤崁樓……歷史古蹟座落於棋盤巷弄間，等待陌生的跫音踏階來訪。街道中許多的傳統古宅、老屋，結合文化、設計而改頭換面，重新置換成各式各樣的創意基地，吸引台灣各地的旅客欣賞、體驗，成為台南在古蹟與美食之外新興的觀光特色。
電影的慶典　影展知多少
(2013-03-10)
吳晉宇
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Department of Communication and Technology
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傳播與科技學系
台灣一年共有三十個以上的大小型影展舉辦，讓喜歡看電影的人們大飽眼福。這些影展提供了創作者、片商及觀眾一個有別於院線片的平台，滿足彼此的不同需求。
蔡秀雅　勇敢爭取堅守夢想
(2013-03-10)
戴子昀
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Department of Communication and Technology
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傳播與科技學系
插畫家蔡秀雅目前在台灣科技大學擔任講師，她以自身經驗出發，努力將自己的影響力發揮到最大，致力於教育繪者如何保障自身權益，用心呵護台灣的插畫種子，讓台灣的插畫更臻美好。
以上帝之名
(2013-03-10)
楊敦元
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Department of Communication and Technology
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傳播與科技學系
斬妖除魔一直以來都是受大眾所歡迎的題材。但是要以什麼手法呈現才能讓這部電影成為傳世的經典之作呢？
皮皮與她那不願蠕動的腸胃
(2013-03-10)
吳悅萍
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Department of Communication and Technology
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傳播與科技學系
大學二年級之前，皮皮從來不覺得沒有每天排便是一件嚴重的事，她甚至自豪沒有排便也不會像其他同學一樣感到不舒服，事實上，她那頑強的腸胃已經懶得蠕動到了一個走火入魔的地步了。
夢想與現實的衝突　黃柏榮
(2013-03-10)
高綮翊
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Department of Communication and Technology
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傳播與科技學系
每一個職業的背後，都有其辛酸的經歷，就連平常在電視前光鮮亮麗的電競職業選手也不例外，這次將藉著前職業電競選手黃柏榮所經歷過的事情，來了解電競圈不為人知的一面。
裝修業市場大　衍生問題多
(2013-03-10)
龔霈鏵
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Department of Communication and Technology
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傳播與科技學系
近幾年的景氣的回溫加上高於一般工商服務業月薪等誘因，使得投入室內設計及裝修業的人數逐年攀升。然而卻也因此造成許多問題。
終結核四　全台廢核大遊行
(2013-03-10)
蘇品勻
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Department of Communication and Technology
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傳播與科技學系
今年3月即是福島核災二周年，福島的悲劇，讓全世界都感受到核能對環境所可能造成的破壞、以及對民眾造成重大的健康危機。這個慘痛的教訓，也讓台灣應該好好反省、檢視我們的核能安全問題。台灣民眾選在3月9日這一天，走上街頭，舉行串連北、中、南的全台廢核大遊行，喊出：「終結核四計畫！拒絕危險核電！」向政府展現反核的民意。
不輕易掉落的葉子　周素葉
(2013-03-10)
戴裕蒨
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Department of Communication and Technology
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傳播與科技學系
病房內，葉子姐一隻手抱著剛動完手術的小嬰兒，另一隻手俐落地餵食及換藥，微噘著的嘴吹著輕快的口哨，時而輕聲哄著略為掙扎的孩子。她，是長庚醫院顱顏中心唯一的「正顎個案照護管理師」──周素葉。
記憶裡的甜
(2013-03-10)
柯佳妤
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Department of Communication and Technology
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傳播與科技學系
粿的甜，是糖與記憶中的美麗時光交織相容而成的。
創意謬思　展演之美
(2013-03-10)
廖敏廷
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Department of Communication and Technology
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傳播與科技學系
「如果妳的穿著令人印象深刻，表示妳擁有更好的人生。」　　　　　　　　　　　　　　　　　　　　　　　　　－－Vivienne Westwood