Browsing by Issue Date, starting with "2004-04-11"
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Item type:Item, 利用磁場控制液晶雙折射現象之可調兆赫波相移器或相位延遲器(2004-04-11) ;潘犀靈 ;趙如蘋陳昭遠本發明揭示一種「利用磁場控制液晶雙折射現象之可調兆赫波相移器或相位延遲器」係提供兆赫波段(0.1兆赫~10兆赫)一連續可調之相移器。本發明包含一液晶盒、一組磁鐵、一控制磁鐵角度之機構及固定樣品之夾具。使用時,使欲調變之電磁波穿過液晶盒,而後改變磁場大小或角度即可提供一連續可調之相位延遲。為了增加相位可調之範圍,液晶盒亦採用三明治結構達成多層液晶之目的。Item type:Item, Enhanced thermal properties of PS nanocomposites formed from inorganic POSS-treated montmorillonite(2004-04-13) ;Yei, DR ;Kuo, SW ;Su, YC ;Chang, FC應用化學系We have prepared polystyrene/clay nanocomposites using an emulsion polymerization technique. The nanocomposites were exfoliated at up to a 3 wt% content of pristine clay relative to the amount of polystyrene (PS). We used two different surfactants for the montmorillonite: the aminopropylisobutyl polyhedral oligomeric silsesquioxane (POSS) and the ammonium salt of cetylpyridinium chloride (CPC). Both surfactants can intercalate into the layers of the pristine clay dispersed in water prior to polymerization. Although the d spacing of the POSS-intercalated clay is relatively smaller than that of the CPC-intercalated clay, PS more easily intercalates and exfoliates the POSS-treated clay than the CPC-treated clay. IR spectroscopic analysis further confirms the intercalation of POSS within the clay layers. We used X-ray diffraction (XRD) and transmission electron microscopy (TEM) to characterize the structures of the nanocomposites. The nanocomposite prepared from the clay treated with the POSS containing surfactant is exfoliated, while an intercalated clay was obtained from the CPC-treated surfactant. The molecular weights of polystyrene (PS) obtained from the nanocomposite is slightly lower than the virgin PS formed under similar polymerization conditions. The value of T, of the PS component in the nanocomposite is 8 degreesC higher than the virgin PS and its thermal decomposition temperature (21 degreesC) is also higher significantly. The presence of the POSS unit in the MMT enhances the thermal stability of the polystyrene. (C) 2004 Elsevier Ltd. All rights reserved.Item type:Item, 停水通知(國立陽明大學, 2004-04-15)陽明電子報編輯小組<營繕組提供> 茲因 93年 4月17、18、19、20 日 實施全校水池水塔 清洗作業, 清洗時影響供水之範圍及時間如後,請預作準備,不便之處,祈請諒察Item type:Item, 三十而立‧陽明創校三十週年系列報導之二(國立陽明大學, 2004-04-15)陽明電子報編輯小組校史及三十週年紀念專刊編輯小組 於 3月30日上午9:00,於行政大樓三樓會議室召開工作籌備會第一次會議。Item type:Item, 山頂運動場車輛用柵欄機管制通知(國立陽明大學, 2004-04-15)陽明電子報編輯小組<營繕組提供> 通往山頂運動場之管制車輛用柵欄機已修復,於今(4/12)日開始管制,如有需要請洽體育室,不便之處,敬請見諒Item type:Item, Item type:Item, Item type:Item, Item type:Item, 台北文化護照上路,八條散步路線任遨遊(國立陽明大學, 2004-04-15)陽明電子報編輯小組<陽明大學廣場提供> 串聯台北五十家文化館舍的「台北文化護照」活動今天開跑,有「史蹟風華遊」、「城市風光遊」等八條台北文化觀光散步路線Item type:Item, Generalized and pseudo-generalized trimmed means for the linear regression with AR(l) error model(2004-04-15) ;Lai, YH ;Thompson, P ;Chen, LA ;統計學研究所Institute of StatisticsWe propose a generalized and pseudo-generalized trimmed means for the linear regression with AR(1) errors model. These will play the role of robust-type generalized and pseudo-generalized estimators for this regression model. Their asymptotic distributions are developed. (C) 2003 Elsevier B.V. All rights reserved.Item type:Item, Item type:Item, Item type:Item, Outlook 2003 協助封鎖垃圾電子郵件(國立陽明大學, 2004-04-15)陽明電子報編輯小組<資通中心提供> 本校授權使用之微軟 office 2003 中包含 outlook 2003 軟體,提供封鎖垃圾電子郵件新功能,有需求之教職員可將微軟 office 升級至 2003 版本Item type:Item, 本校員生消費合作社形象商品(國立陽明大學, 2004-04-15)陽明電子報編輯小組<員生消費合作社提供> 為提昇本校知名度及學生畢業後紀念與回憶,員生消費合作社製作數款形象商品,自用饋贈皆宜,商品目錄建構於本校員生消費合作社網頁Item type:Item, Item type:Item, Item type:Item, 國立陽明大學第29屆校慶系列活動(國立陽明大學, 2004-04-15)陽明電子報編輯小組為慶祝本校第29屆校慶,課外活動輔導組及第十屆學生會共同策劃了一系列慶祝活動,歡迎全校師生屆時踴躍參加.....Item type:Item, Item type:Item, Efficient green coumarin dopants for organic light-emitting devices(2004-04-15) ;Lee, MT ;Yen, CK ;Yang, WP ;Chen, HHLiao, CH[GRAPHICS] We have synthesized a new green fluorescent dopant C-545P having incorporated five strategically placed "methyl" steric spacers on the julolidyl ring system. C-545P has good thermal properties and photostability, and when fabricated as a dopant in an Alq(3)-hosted OLED device, it shows notable improvement in luminance efficiency and is more resistant to concentration quenching than C-545T, particularly in the doping concentration range between 1 and 2% v/v, while achieving comparable device stability.Item type:Item, 三十而立‧陽明創校三十週年系列報導一(國立陽明大學, 2004-04-15)陽明電子報編輯小組本校創立即將屆滿三十週年,為編輯校史及三十週年紀念專刊,校長指示秘書室籌辦相關業務,包括邀請前通識中心王銳教授擔任編輯小組召集人,同時擬訂編輯委員名單。