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Now showing items 1 - 16 of 160

  • A Novel Mobile Data Contract Design with Time Flexibility

    Wei Yi   Yu Junlin   Lok Tat-Ming   Gao Lin  

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  • Multilayered Graphene Oxide Membrane for Water Treatment: A Review

    Wei Yi   Zhang Yushan   Gao Xueli   Ma Zhun   Wang Xiaojuan   Gao Congjie  

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  • Portion of a display screen with animated graphical user interface

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  • Portion of a display screen with animated graphical user interface

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  • Thermal characterization and pyrolysis of digestate for phenol production

    Wei Yi   Hong Jijian   Ji Weirong  

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  • Memristor with channel region in thermal equilibrium with containing region

    A memristor with a channel region in thermal equilibrium with a containing region. The channel region has a variable concentration of mobile ions. The containing region, formed of stoichiometric crystalline material, contains and is in thermal equilibrium with the channel region.
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  • Signatures of Bose-Einstein condensation in an optical lattice

    Ke-Ji Chen   Jingkun Wang   Wei Yi   Wei Zhang  

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  • Method and circuit for switching a memristive device in an array

    A method of switching a memristive device in a two-dimensional array senses a leakage current through the two-dimensional array when a voltage of half of a switching voltage is applied to a row line of the memristive device. A leakage compensation current is generated according to the sensed leakage current, and a switching current ramp is also generated. The leakage compensation current and the switching current ramp are combined to form a combined switching current, which is applied to the row line of the memristive device. When a resistance of the memristive device reaches a target value, the combined switching current is removed from the row line.
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  • Method and device for adjusting brightness of an optical touch panel

    A method and device are provided for adjusting brightness of an optical touch panel. The optical touch panel comprises a microprocessor, a display module including a back light source, and an optical position detection device including optical transmitting devices and optical receiving devices. The method comprises detecting, via the optical receiving devices, a current ambient light level on the display module. The method further comprises generating, via the optical receiving devices, a current ambient light level signal indicative of the current ambient light level and transmitting the current ambient light level signal to the microprocessor. Furthermore, the method comprises adjusting, via the microprocessor, brightness of the back light source based on the current ambient light level signal.
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  • Nanoscaled Interface Between Microgold Particles and Biphase Glass-Ceramic Matrix

    Wei Yi   Xiaozhi Hu   Paul Ichim and Xudong Sun  

    This article presents a detailed study on the nanoscaled interface between microelongated gold particles (GP) and biphase leucite/feldspar glass-ceramic matrix. The glass-ceramic composite with a nonuniform GP distribution was processed through hot-pressing under vacuum using a commercial dental ceramic furnace for glass-ceramic dental crown manufacturing. Heat treatments at 900°C, 1100°C, and 1300°C were conducted, and microstructural features along the interface were used to verify the chemical reactions between GP and glass-ceramic matrix. It was observed that the amorphous glass-ceramic matrix had nanoscaled biphase structures, and the distributed nanoscaled amorphous leucite phase was attracted to GP during hot-pressing, and was more reactive with GP than the feldspar phase. The thickness of the interfacial phase formed through chemical reactions between GP and glass-ceramic matrix is around 30 nm. The chemically bonded interface has contributed significantly toward the substantial improvements in both strength and toughness of the GP-reinforced glass-ceramic matrix composite. Characterization techniques, including X-ray diffraction and field-emission scanning electron Microscopy, incorporating X-ray microanalysis using energy dispersive spectrometry, have been employed in this study.
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  • ZnO Nanostructures and Their Applications, edited by Xiao Wei Sun and Yi Yang

    McGlynn   Enda  

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  • Percutaneous biopsy of cavernous sinus tumour via the foramen ovale

    Wei Yi   Kjell ?hman   Thomas Br?nnstr?m   A. Tommy Bergenheim  

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  • Titanium glycolate-derived TiO 2 nanomaterials: Synthesis and applications

    Wei Yi   Zhu Jiaxin   Gan Yixin   Cheng Gang  

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  • Proteomic profiling of human bone marrow mesenchymal stem cells under shear stress

    Wei Yi   Yang Sun   Xufeng Wei   Chunhu Gu   Xiaochao Dong   Xiaojun Kang   Shuzhong Guo and Kefeng Dou  

    Mesenchymal stem cells (MSCs) are promising seed cells for tissue engineering of blood vessels. As seed cells, MSCs must endure blood fluid shear stress after transplantation. It has been shown that fluid shear stress can regulate the proliferation and differentiation of MSCs. However, the effects of fluid shear stress on MSCs including the types of proteins modulated are still not well understood. In this study, we exposed human mesenchymal stem cells (HMSCs) to 3 dyn/cm2 shear stress for 6 h and compared them to a control group using proteomic analysis. Thirteen specific proteins were affected by shear stress, 10 of which were up-regulated. Shear stress especially induced sustained increases in the expression of Annexin A2 and GAPDH, which have been specifically shown to affect HMSCs function. We present here the first comparative proteome analysis of effect of shear stress on HMSCs.
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  • Multi-level memory cell with continuously tunable switching

    The present disclosure provides a data storage device that includes multi-level memory cells. The data storage device may include circuitry configured to write data to the multi-level memory cell. The write circuitry may include compliance circuitry configured to implement continuously tunable switching. The write circuitry may be configured to select a compliance mode for the switching, the compliance mode being selected from the group comprising current compliance and voltage compliance.
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    A method and system for a touch sensor (100) having a contact and percolation hybrid operating mode and including a top layer (120), an intermediate layer (115), and a bottom layer (110). The top layer has a top side (130) receiving a touch input. The intermediate layer is disposed beneath the top layer. The intermediate layer measures pressure data, the pressure data being indicative of whether the touch input belong to a first type of touch or to a second type of touch. The first type of touch has a first pressure that is lesser than a second pressure of the second type of touch. The bottom layer is disposed beneath the intermediate layer and is used to determine at least one of position data, time data, and the pressure data of the touch input.
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