Browsing by Issue Date, starting with "2014-09-08"

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One-Pot Synthesis of Highly Substituted Polyheteroaromatic Compounds by Rhodium(III)-Catalyzed Multiple C-H Activation and Annulation
(2014-09-08)
Jayakumar, Jayachandran
;
Parthasarathy, Kanniyappan
;
Chen, Yi-Hsiang
;
Lee, Tai-Hua
;
Chuang, Shih-Ching
A new method for the synthesis of highly substituted naphthyridine-based polyheteroaromatic compounds in high yields proceeds through rhodium(III)-catalyzed multiple CH bond cleavage and CC and CN bond formation in a one-pot process. Such highly substituted polyheteroaromatic compounds have attracted much attention because of their unique -conjugation, which make them suitable materials for organic semiconductors and luminescent materials. Furthermore, a possible mechanism, which involves multiple chelation-assisted ortho CH activation, alkyne insertion, and reductive elimination, is proposed for this transformation.
Light emitting device with graded composition hole tunneling layer
(2014-09-09)
Wang Chao-Hsun
;
Kuo Hao-Chung
A light emitting device with graded composition hole tunneling layer is provided. The device comprises a substrate and an n-type semiconductor layer is disposed on the substrate, in which the n-type semiconductor layer comprises a first portion and a second portion. A graded composition hole tunneling layer is disposed on the first portion of the n-type semiconductor layer. An electron blocking layer is disposed on the graded composition hole tunneling layer. A p-type semiconductor layer is disposed on the electron blocking layer. A first electrode is disposed on the p-type semiconductor layer, and a second electrode is disposed on the second portion of the n-type semiconductor layer and is electrical insulated from the first portion of the n-type semiconductor. The graded composition hole tunneling layer is used as the quantum-well to improve the transport efficiency of the holes to increase the light emitting efficiency of the light emitting device.
Bianchi type I expanding universe in Weyl-invariant massive gravity
(2014-09-10)
Kao, W. F.
;
Lin, Ing-Chen
;
物理研究所
;
Institute of Physics
We will study the cosmological evolutions of aWeyl-invariant de Rham, Gabadadze, and Tolley (dRGT) massive gravity theory with a general fiducial metric. In the unitary gauge, this model is equivalent to a massive gauge field coupled to the dRGT massive gravity model. The massive gravity terms will serve as an effective cosmological constant for all metric spaces if the fiducial metric is treated as an auxiliary field. A further discussion will also be addressed on the bimetric theory. In particular, we will discuss the role played by the Weyl vector boson in Bianchi type I expanding space.
根據路況調整充電狀態之充電裝置及其方法
(2014-09-11)
陳烈武
;
曾煜棋
;
吳建澄
本發明係揭露一種根據路況調整充電狀態之充電裝置及其方法，應用於一載具，其包含：一定位模組、一處理模組、一發電模組以及一驅動模組。定位模組係提供一地理資訊。處理模組根據地理資訊計算與判斷一路段斜率，並產生一驅動訊號。發電模組連結一待充電裝置，且發電模組利用載具之車輪帶動一滾輪，進而驅動發電模組發電，並對待充電裝置充電。驅動模組設置於載具上，並以一活動臂連結發電模組。驅動模組接收驅動訊號，並根據驅動訊號來驅動活動臂，以控制發電模組移入或移出車輪。
乙醇重組器觸媒組成物及乙醇重組器觸媒之製備方法
(2014-09-11)
李積琛
;
翁聖豐
;
陳昀聲
;
王允欣
一種乙醇重組器觸媒之製備方法，包括以下步驟：首先，將第一金屬前驅物、第二金屬前驅物及第三金屬前驅物在室溫下混合於一有機媒介中，以形成一混合物；接著，將一介面活性劑添加入該混合物中，並於30℃至50℃下靜置3至7天，以形成一凝膠態溶液；之後，以350℃至550℃之第一段溫度進行鍛燒1至5小時，並以800℃至1000℃之第二段溫度進行鍛燒1至5小時，即製成一乙醇重組器觸媒。本發明另提供一種乙醇重組器觸媒組成物。
Core Excitation, Specific Dissociation, and the Effect of the Size of Aromatic Molecules Connected to Oxygen: Phenyl Ether and 1,3-Diphenoxybenzene
(2014-09-11)
Lin, Yi-Shiue
;
Lin, Shu-Yu
;
Lee, Yuan T.
;
Tseng, Chien-Ming
;
Ni, Chi-Kung
Near-edge X-ray absorption fine structure (NEXAFS) spectra of phenyl ether at the carbon K-edge and 1,3-diphenoxybenzene at both the carbon and oxygen K-edges were measured in the total ion yield mode using X-rays from a synchrotron and a reflectron time-of-flight mass spectrometer. Time-dependent density functional theory was adopted to calculate the carbon and oxygen K-edge NEXAFS spectra of phenol, phenyl ether, and 1,3-diphenoxybenzene. The assignments and a comparison of the experimental and calculated spectra are presented. The mass spectra of ionic products formed after X-ray absorption at various excitation energies are also reported. Specific dissociations were observed for the 1s --> pi* transition of phenyl ether. In comparison with phenol and phenyl ether, the dependence of the fragmentation on the excitation site and destination state was weak in 1,3-diphenoxybenzene, likely as a result of delocalization of the valence electrons and rapid randomization of energy.
時域反射式液面與刷深量測裝置及其方法
(2014-09-11)
林志平
;
鐘志忠
本發明係關於一種時域反射式液面與刷深量測裝置及其方法，特別是一種利用時域反射裝置與方法者，藉以同時監測液面與沖刷深度變化。本發明首先在時域反射導波器設計方面，採用結合類似地錨鋼索的導波器設計，提出符合安裝實務的設計，並考慮導體絕緣處理，解決訊號衰減問題；在量測液面與沖刷深度的量測方法，基於不同介質之電磁波速不同，本發明結合反射訊號辨識與波傳速度標定與分析流程，提出較可靠的訊號分析方法。
車道定位系統、車道定位方法及路面標記
(2014-09-11)
曾煜棋
;
陳烈武
;
鄭任翔
本發明揭露一種車道定位系統與方法，用於判斷車道之位置，其中該車道定位系統包含影像擷取單元、影像識別單元以及處理單元。影像擷取單元擷取車道之車道影像，所述車道影像至少顯示車道兩旁之第一車道線與第二車道線其中之一。影像識別單元由車道影像至少識別出第一車道線上的第一路面標記與第二車道線上的第二路面標記其中之一後，依據第一路面標記或第二路面標記以產生車道位置信號。處理單元依據車道位置信號判斷車道之位置。藉此，本發明可利用路面標記達到車道辨識的功效。
ENGINEERING CHANGE ORDER HOLD TIME FIXING METHOD
(2014-09-11)
JIANG Hiu-Ru
;
YANG Yu-Ming
;
HO Sung-Ting
An ECO hold time fixing method fulfills a short path padding in a placed and routed design by a minimum capacitance insertion. In the method, a padding value determination step receives the placed and routed design and is based on a cell library, timing constraints, and a timing analysis report to determine padding values and locations required for each gate of the placed and routed design to output. A load/buffer allocation step is based on a spare cell information, a dummy metal information, and the padding values and locations to achieve the short path padding in the placed and routed design.
可電壓控制之光學元件及其製備方法
(2014-09-11)
劉立偉
;
陳致維
;
蘇雍仁
;
黃乙白
一種可電壓控制之光學元件，其包括：第一基板；第一導體層，設置在第一基板上；液晶層，設置在第一導體層之上；半導體層，設置在液晶層之上；第二導體層，設置在半導體層上；及第二基板，設置在第二導體層上。
NANOPARTICLE DRUG CARRIER, PHARMACEUTICAL COMPOSITION AND MANUFACTURING METHOD THEREOF
(2014-09-11)
Chen San-Yuan
;
Li Wei-Ming
A pharmaceutical composition is provided. The pharmaceutical composition includes a nanoparticle, a shell and a drug, wherein the nanoparticle has an outer surface and the drug is mixed with the shell and is formed on the outer surface.
基於擴增實境與雲端計算之應用程式執行方法與系統
(2014-09-11)
陳烈武
;
曾煜棋
;
彭昱豪
一種創新的應用程式執行方法與系統，可利用動態影像或靜態照片來讓使用者取得欲通訊/查詢對象之識別帳號並觸發特定程式/網頁功能的人性化介面。本發明讓使用者不必自行輸入欲通訊對象的識別帳號，如E-Mail位址、MSN識別、Facebook識別、FTP IP、甚至是關鍵字等，只需一指拖曳人臉到應用程式圖示/網頁圖示上或將該應用程式圖示/網頁圖示拖曳到該人臉上，即可輕鬆完成執行應用程式/網站功能的過程，有效地降低使用者操作複雜度，並提供簡易的應用軟體與網站服務操作方法。
INTEGRATED PASSIVE OPTICAL NETWORK (PON) SYSTEM
(2014-09-11)
CHOW CHI-WAI
;
YEH CHIEN-HUNG
;
SUNG JIUN-YU
An integrated passive optical network system is disclosed. The system comprises an optical distribution network (ODN), a time-division multiplexing (TDM)-optical line terminal (OLT), a wavelength-division multiplexing (WDM)-optical line terminal (OLT), a plurality of time-division multiplexing (TDM)-optical network units (ONUs), and at least one wavelength-division multiplexing (WDM)-optical network unit (ONU) comprising a first filter. The TDM-OLT and the WDM-OLT respectively transmit a first optical signal carrying a first downstream signal and a second optical signal carrying a second downstream signal to the ONUs through the ODN, and wavelengths of the second optical signal and the first optical signal are different. The TDM-ONUs respectively retrieve the first downstream signal The WDM-ONU uses the first filter to retrieve the second downstream signal.
Detailed mechanism of the CH2I + O-2 reaction: Yield and self-reaction of the simplest Criegee intermediate CH2OO
(2014-09-14)
Ting, Wei-Lun
;
Chang, Chun-Hung
;
Lee, Yu-Fang
;
Matsui, Hiroyuki
;
Lee, Yuan-Pern
The application of a new reaction scheme using CH2I + O-2 to generate the simplest Criegee intermediate, CH2OO, has stimulated lively research; the Criegee intermediates are extremely important in atmospheric chemistry. The detailed mechanism of CH2I + O-2 is hence important in understanding kinetics involving CH2OO. We employed ultraviolet absorption to probe simultaneously CH2I2, CH2OO, CH2I, and IO in the reaction system of CH2I + O-2 upon photolysis at 248 nm of a flowing mixture of CH2I2, O-2, and N-2 (or SF6) in the pressure range 7.6-779 Torr to investigate the reaction kinetics. With a detailed mechanism to model the observed temporal profiles of CH2I, CH2OO, and IO, we found that various channels of the reaction CH2I + O-2 and CH2OO + I play important roles; an additional decomposition channel of CH2I + O-2 to form products other than CH2OO or ICH2OO becomes important at pressure less than 60 Torr. The pressure dependence of the derived rate coefficients of various channels of reactions of CH2I + O-2 and CH2OO + I has been determined. We derived a rate coefficient also for the self-reaction of CH2OO as k = (8 +/- 4) x 10(-11) cm(3) molecule(-1) s(-1) at 295 K. The yield of CH2OO from CH2I + O-2 was found to have a pressure dependence on N-2 and O-2 smaller than in previous reports; for air under 1 atm, the yield of similar to 30% is about twice of previous estimates. (C) 2014 AIP Publishing LLC.
Structure and function of TatD exonuclease in DNA repair
(2014-09-15)
Chen, Yi-Chen
;
Li, Chia-Lung
;
Hsiao, Yu-Yuan
;
Duh, Yulander
;
Yuan, Hanna S.
TatD is an evolutionarily conserved protein with thousands of homologues in all kingdoms of life. It has been suggested that TatD participates in DNA fragmentation during apoptosis in eukaryotic cells. However, the cellular functions and biochemical properties of TatD in bacterial and non-apoptotic eukaryotic cells remain elusive. Here we show that Escherichia coli TatD is a Mg2+-dependent 3\'-5\' exonuclease that prefers to digest single-stranded DNA and RNA. TatD-knockout cells are less resistant to the DNA damaging agent hydrogen peroxide, and TatD can remove damaged deaminated nucleotides from a DNA chain, suggesting that it may play a role in the H2O2-induced DNA repair. The crystal structure of the apo-form TatD and TatD bound to a single-stranded three-nucleotide DNA was determined by X-ray diffraction methods at a resolution of 2.0 and 2.9 angstrom, respectively. TatD has a TIM-barrel fold and the single-stranded DNA is bound at the loop region on the top of the barrel. Mutational studies further identify important conserved metal ion-binding and catalytic residues in the TatD active site for DNA hydrolysis. We thus conclude that TatD is a new class of TIM-barrel 3\'-5\' exonuclease that not only degrades chromosomal DNA during apoptosis but also processes single-stranded DNA during DNA repair.
Expression of an expanded CGG-repeat RNA in a single pair of primary sensory neurons impairs olfactory adaptation in Caenorhabditis elegans
(2014-09-15)
Juang, Bi-Tzen
;
Ludwig, Anna L.
;
Benedetti, Kelli L.
;
Gu, Chen
;
Collins, Kimberly
Fragile X-associated tremor/ataxia syndrome (FXTAS) is a severe neurodegenerative disorder that affects carriers of premutation CGG-repeat expansion alleles of the fragile X mental retardation 1 (FMR1) gene; current evidence supports a causal role of the expanded CGG repeat within the FMR1 mRNA in the pathogenesis of FXTAS. Though the mRNA has been observed to induce cellular toxicity in FXTAS, the mechanisms are unclear. One common neurophysiological characteristic of FXTAS patients is their inability to properly attenuate their response to an auditory stimulus upon receipt of a small pre-stimulus. Therefore, to gain genetic and cell biological insight into FXTAS, we examined the effect of expanded CGG repeats on the plasticity of the olfactory response of the genetically tractable nematode, Caenorhabditis elegans(C. elegans). While C. elegans is innately attracted to odors, this response can be downregulated if the odor is paired with starvation. We found that expressing expanded CGG repeats in olfactory neurons interfered with this plasticity without affecting either the innate odor-seeking response or the olfactory neuronal morphology. Interrogation of three RNA regulatory pathways indicated that the expanded CGG repeats act via the C. elegans microRNA (miRNA)-specific Argonaute ALG-2 to diminish olfactory plasticity. This observation suggests that the miRNA-Argonaute pathway may play a pathogenic role in subverting neuronal function in FXTAS.
Compositional grading in GaAsSb grown on GaAs substrates
(2014-09-15)
Lin, Y. M.
;
Chen, C. H.
;
Wu, J. S.
;
Lee, C. P.
;
電子工程學系及電子研究所
The composition profile and lattice strain of GaAsSb grown on GaAs substrates by molecular beam epitaxy have been investigated using the Rutherford backscattering spectrometry (RBS) and X-ray reciprocal space mapping. Through RBS, we found that the Sb content in the layer increases from the interface to the top surface. The X-ray reciprocal space mapping shows that the GaAsSb lattice also gradually relaxes as the layer becomes thicker. The behavior of composition grading and gradual lattice relaxation is quite different from those of III-V ternary compounds with two group Ill atoms. (C) 2014 Elsevier B.V. All rights reserved.
Dynamic magnetic interaction in La2/3Sr1/3MnO3/BiFeO3 heterostructure
(2014-09-15)
Guo, H. Y.
;
Lin, J. G.
;
Yang, Jan Chi
;
Chu, Y. H.
;
材料科學與工程學系
The La2/3Sr1/3MnO3/BiFeO3 (LSMO/BFO) heterostructure is studied as probed by temperature-dependent ferromagnetic resonance (FMR). Consistent with the structure analysis, two FMR modes are found for both a single LSMO layer and a LSMO/BFO bilayer grown on DyScO3, corresponding to the strained and relaxed phases of LSMO. The FMR linewidth intensity vs temperature curve shows two maxima at 200 K and 140 K in the strained phase of LSMO/BFO bilayer, which is related to the magnetic excitations in BFO. Our results demonstrate a dynamic spin interaction between LSMO and BFO, suggesting an effective route to manipulate the magnetic properties of oxide heterostructures. (C) 2014 AIP Publishing LLC.
Compositional grading in GaAsSb grown on GaAs substrates
(2014-09-15)
Lin, Y. M.
;
Chen, C. H.
;
Wu, J. S.
;
Lee, C. P.
;
電子工程學系及電子研究所
The composition profile and lattice strain of GaAsSb grown on GaAs substrates by molecular beam epitaxy have been investigated using the Rutherford backscattering spectrometry (RBS) and X-ray reciprocal space mapping. Through RBS, we found that the Sb content in the layer increases from the interface to the top surface. The X-ray reciprocal space mapping shows that the GaAsSb lattice also gradually relaxes as the layer becomes thicker. The behavior of composition grading and gradual lattice relaxation is quite different from those of III-V ternary compounds with two group Ill atoms. (C) 2014 Elsevier B.V. All rights reserved.
Circuit board with twinned CU circuit layer and method for manufacturing the same
(2014-09-16)
Chen Chih
;
Hsiao Hsiang-Yao
A circuit board with twinned Cu circuit layer and a method for manufacturing the same are disclosed, wherein the method comprises the following steps: (A) providing a substrate with a first circuit layer formed thereon, wherein the first circuit layer comprises a conductive pad; (B) forming a first dielectric layer on the surface of the substrate; (C) forming plural openings in the first dielectric layer, wherein each opening penetrates through the first dielectric layer and communicates with the conductive pad to expose the conductive pad; (D) forming a Cu seeding layer in the openings; (E) forming a nano-twinned Cu layer in the openings with an electroplating process; and (F) annealing the substrate to transfer the material of the Cu seeding layer into nano-twinned Cu, wherein the nano-twinned Cu layer and the transferred Cu seeding layer are formed into a second circuit layer.