Browsing by Issue Date, starting with "2006-03-03"

Now showing 1 - 20 of 63555

Fabrication of biomimetic super-amphiphobic surfaces through plasma modification of benzoxazine films
(2006-03-03)
Wang, CF
;
Chiou, SF
;
Ko, FH
;
Chou, CT
;
Lin, HC
In this study, a method for producing super-amphiphobic surfaces through plasma modification of benzoxazine films is presented. Microroughening and fluorination of the benzoxazine films occurs during the plasma treatment process and a rugged surface with a micro/nano binary structure is formed. The combined effect of low surface energy and substrate roughness results in high advancing contact angles (157 degrees for water, 152 degrees for diiodomethane) and low contact angle hysteresis.
Protein folding: an antagonistic reaction of spontaneous folding and diffusion limited aggregation in nature
(2006-03-06)
Kan, LS
;
Chang, CC
;
生物科技學系
;
Department of Biological Science and Technology
Interaction and toxicity of nanodiamonds in human cells
(2006-03-06)
Chao, JI
;
Chang, CC
;
Cheng, CL
;
生物科技學系
;
Department of Biological Science and Technology
Mst3, a novel mitochondrial protein kinase, regulates pro-apoptotic proteins in response to apoptotic stimuli
(2006-03-06)
Yuan, CJ
;
Lin, CY
;
Wu, HY
;
生物科技學系
;
Department of Biological Science and Technology
White-light generation and energy transfer in SrZn2(PO4)(2): Eu,Mn phosphor for ultraviolet light-emitting diodes
(2006-03-06)
Yang, WJ
;
Chen, TM
;
應用化學系
;
Department of Applied Chemistry
The SrZn2(PO4)(2):Eu2+,Mn2+ phosphor shows two emission bands under ultraviolet radiation; the one observed at 416 nm is attributed to Eu2+ occupying the Sr2+ sites and the other asymmetric band deconvoluted into two peaks was found to center at 538 and 613 nm, which originate from Mn2+ occupying two different Zn2+ sites. The energy transfer from Eu2+ to Mn2+ has been demonstrated to be a resonant type via a dipole-quadrupole mechanism. By utilizing the principle of energy transfer and appropriate tuning of activator contents, we have demonstrated that SrZn2(PO4)(2):Eu2+,Mn2+ is potentially useful as an ultraviolet-convertible phosphor for white-light emitting diodes. (c) 2006 American Institute of Physics.
Mst3 plays an important role in the oxidative stress-induced apoptosis in human trophoblasts
(2006-03-06)
Lin, CY
;
Wu, HY
;
Yuan, CJ
;
生物科技學系
;
Department of Biological Science and Technology
Mammalian Ste20-like protein kinase 3 (Mst3) plays an important role in spontaneous delivery
(2006-03-06)
Wu, HY
;
Lin, CY
;
Lin, TY
;
Yuan, CJ
;
生物科技學系
Long-term stabilization of a 10 GHz 0.8 ps asynchronously mode-locked Er-fiber soliton laser by deviation-frequency locking
(2006-03-06)
Hsiang, WW
;
Lin, CY
;
Sooi, NK
;
Lai, YC
;
光電工程學系
Without using high speed RF feedback electronics, we successfully demonstrate a novel and economic long-term stabilization scheme for a 10 GHz 0.8 ps asynchronously mode-locked Er-fiber soliton laser by controlling the cavity length to lock the deviation frequency at 25 kHz. The required deviation frequency between the cavity harmonic frequency and the modulation frequency can be directly obtained from the low frequency electronic sideband of the laser output. The same feedback control unit is also useable for higher modulation frequencies, because the suitable deviation frequency always remains within the range of 15 similar to 40 kHz. (c) 2006 Optical Society of America.
Liquid-crystal-based terahertz tunable Lyot filter
(2006-03-06)
Chen, CY
;
Pan, CL
;
Hsieh, CF
;
Lin, YF
;
Pan, RP
A two-element tunable Lyot filter operating in the terahertz (THz) frequency range is demonstrated. The central bandpass frequency of the filter can be continuously tuned from 0.388 to 0.564 THz (a fractional tuning range of 40%) using magnetically controlled birefringence in nematic liquid crystals. The transmission bandwidth is 0.1 THz and the insertion loss of the present device is 8 dB due to the scattering of LC molecules in the thick LC cells. This filter can be operated at room temperature. (c) 2006 American Institute of Physics.
Optical monitoring apparatus for use in wavelength division multiplexing network
(2006-03-07)
Chi
;
Sien
;
Lee
;
Chien-Chung
;
Yeh
An optical monitoring apparatus based on the scanning of the gain profile of erbium-doped fiber amplifiers (EDFA) and applied in a wavelength division multiplexing network has been proposed and experimentally demonstrated. The EDFA with an injected saturated tone can provide variable gain or loss profile by controlling the pump power. The components used in the present optical monitoring apparatus for use in a wavelength division multiplexing network are easily available and cost-effective, valuable for monitoring frequency and power of a WDM optical communication system, and capable of greatly enhancing resolution of monitoring frequency spectrum for the optical fiber network system.
Neuroimmunological evidence and enzymatic characterization of a novel dehydroepiandrosterone sulfotransferase in Drosophila brain
(2006-03-07)
Liu, TA
;
Yang, YS
;
生物科技學系
;
Department of Biological Science and Technology
beta-lactoglobulin plays a provocative role in lymphocyte proliferation
(2006-03-07)
Chen, WL
;
Liu, WT
;
Ko, LP
;
Mao, SJT
;
生物科技學系
Nano-surgery on cancer cells by protein-nanodiamond complex.
(2006-03-07)
Chang, CC
;
Chao, JI
;
Sun, KW
;
Cheng, CL
;
生物科技學系
Rearrangebility of bit permutation networks
(2006-03-07)
Bao, XW
;
Hwang, FK
;
Li, Q
;
應用數學系
;
Department of Applied Mathematics
In this paper, we introduce the concept of routing grid as a tool for analyzing realizability of permutations on bit permutation networks (BPNs). We extend a result by Linial and Tarsi which characterizes permutations realizable on shuffle-exchange networks to any BPNs. A necessary condition for a BPN to be rearrangeable is given, and the rearrangeability of two families of BPNs are explored. Finally, we present a method which may help to tackle one kind of balanced matrix problems whose solution implies an answer to Benes conjecture. Hopefully, our treatment brings some new insight into the problem of permutation routing. (c) 2005 Elsevier B.V. All rights reserved.
Wide-sense nonblocking for multi-log(d) N networks under various routing strategies
(2006-03-07)
Chang, FH
;
Guo, JY
;
Hwang, FK
;
應用數學系
;
Department of Applied Mathematics
Chang et al. showed that the number of middle switches required for WSNB under strategies: save the unused, packing, minimum index, cyclic dynamic, and cyclic static, for the 3-stage Clos network C(n, m, r) with r >= 3 is the same as required for SNB. In this paper, we prove the same conclusion for the multi-log(d) N network. We also extend our results, except for the minimum index strategy, to a general class of networks including the 3-stage Clos network and the multi-log(d) N network as special cases. (c) 2005 Elsevier B.V. All rights reserved.
Cloning and expression of human haptoglobin subunits in Escherichia coli: The potential use of mini-haptoglobin as an antioxidant
(2006-03-07)
Lai, IH
;
Tsai, TI
;
Lai, WY
;
Lin, HH
;
Mao, SJT
Development and implementation of cross-talk cancellation system in spatial audio reproduction based on subband filtering
(2006-03-07)
Bai, MSR
;
Lee, CC
;
機械工程學系
;
Department of Mechanical Engineering
An integrated spatial audio system based on subband filtering and a panel speaker array is developed in this paper. This system is intended for a personal computer and is capable of rendering sound images positioned arbitrarily around a listener, synchronizing with the video image. The proposed system features the spatial audio technologies such as the head-related transfer function (HRTF), the reverberator, and the cross-talk cancellation system (CCS). Of particular importance in this paper is that inverse filtering with Tikhonov regularization technique is employed in designing the multi-channel filters to cancel the crosstalks. To ease the computation loading, the CCS is implemented for frequencies below 5.5 kHz by using a subband filtering approach. The system is implemented on a 5 x I panel speaker array. Experimental investigation indicated that the proposed system is effective in creating an immersive sound field, in complement with video rendering. (c) 2005 Elsevier Ltd. All rights reserved.
Method of manufacturing aluminum oxide film with arrayed nanometric pores
(2006-03-09)
Chao, Chuen-Guang
;
Chen, Chien-Chon
;
Chen, Jung-Hsuan
;
Kuo, Chin-Guo
The present invention pertains to a method of manufacturing an aluminum oxide film with arrayed nanometric pores, wherein a commercial aluminum substrate is provided firstly; then the aluminum substrate is annealed and then electro-polished in order to have a mirror-like surface, and then anodized in order to form a aluminum oxide film with a plurality of nanometric pores, which are aligned in array, and then annealed in order that an oxidation reaction can happen thereon and generates oxide, which via self-diffusion, fills some of smaller pores with the pores size being uniformed; lastly a pore-widening is undertaken in order to increase the diameters of the pores. The present invention can accomplish the nanometric pores aligned in array and with an uniform pore diameter, and simultaneously have the advantages of simplified manufacturing process, easier operational control and reduced cost.
Charge-orbital ordering and verwey transition in magnetite measured by resonant soft X-ray scattering
(2006-03-10)
Huang, DJ
;
Lin, HJ
;
Okamoto, J
;
Chao, KS
;
Jeng, HT
We report experimental evidence for the charge-orbital ordering in magnetite below the Verwey transition temperature T-V. Measurements of O K-edge resonant x-ray scattering on magnetite reveal that the O 2p states in the vicinity of the Fermi level exhibit a charge-orbital ordering along the c axis with a spatial periodicity of the doubled lattice parameter of the undistorted cubic phase. Such a charge-orbital ordering vanishes abruptly above T-V and exhibits a thermal hysteresis, correlating closely with the Verwey transition in magnetite.
Study in IC chip failure during pick-up process by using experimental and finite element methods
(2006-03-10)
Cheng, TH
;
Du, CC
;
Tseng, CH
;
機械工程學系
;
Department of Mechanical Engineering
Stress contours of an IC chip and the displacement contours of the adhesive between an IC chip and blue tape in the pick-up integrated circuit (IC) chip process are obtained using experimental and finite element methods. The physical and mechanical properties of the material used in FEM are determined by pre-experimental tests. Some factors that importantly influence the failure of a pick-up IC chip during the pick-up IC chip process are proposed. The pre-expermiental material properties are manifest in the practical behavior of material, so the post-experimental results are approximately consistent with the FEM results. Post-expermients further demonstrated that the findings of this study can be used to increase the success rate of the pick-up IC chip process. (c) 2005 Elsevier B.V. All rights reserved.