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Now showing items 1 - 16 of 305

  • METHOD AND APPARATUS FOR MEASURING ARRIVAL TIME OF HIGH-ENERGY PHOTONS

    A method and apparatus for measuring an arrival time of high-energy photons. The method comprises: acquiring an arrival time associated with visible photons which are detected by each sensor unit in a photosensor array (120) and which are generated by means of a reaction between high-energy photons and scintillation crystals, wherein the scintillation crystals is continuous crystals (110), and the photosensor array (120) comprises a plurality of sensor units coupled to the scintillation crystals (S210, S310, S410); acquiring an average waiting time corresponding to each of at least part of sensor units selected from among the photosensor array (120), respectively, at least on the basis of the arrival time associated with the visible photons detected by each sensor unit in the photosensor array (120) (S220); and, calculating a mean value on the average waiting time respectively corresponding to each of the at least part of the sensor units, so as to obtain an arrival time of the high-energy photons (S230, S350, S470). According to the method and apparatus, by calculating a mean value of the average waiting time acquired by a plurality of sensor units, a higher temporal resolution may be obtained.
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  • SYSTEM AND METHOD FOR FETAL AND MATERNAL RED BLOOD CELL COUNTING

    A system for counting fetal and maternal red blood cells (RBCs) including a microscope and image capturing device to capture at least one image from a slide holding the fetal and maternal RBCs; a computer readable medium for storing the at least one image; a processor for executing computer readable instructions stored on a computer readable medium; wherein the computer executable instructions include instructions for: indentifying red blood cells from the at least one image; distinguishing between fetal and maternal red blood cells; and counting the fetal and maternal red blood cells.
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  • Structural design of a 3-D printed stab resistant body armor

    Gong, Zheng   Qian, Xinming   Yuan, Mengqi  

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  • DEVICE AND METHOD FOR MEASURING TIME INFORMATION OF PHOTON

    Provided in the present invention are a device and method for measuring time information of a photon. The device comprises a current detection circuit and a processing circuit, wherein the current detection circuit is used to be connected to a photoelectric sensor to detect an initial signal output by the photoelectric sensor and generate a corresponding detection signal; an input end of the processing circuit is connected to an output end of the current detection circuit; and the processing circuit is used for determining the arrival time of a high-energy photon detected by the photoelectric sensor according to the detection signal, estimating the time drift according to the detection signal, and correcting the arrival time based on the time drift. According to the device and method in an embodiment of the present invention, estimating the time drift and correcting the arrival time based on the time drift can correct a time measurement error brought about by a dark event, and simply and conveniently obtain a time measurement result with high accuracy.
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  • APPARATUS, DEVICE AND METHOD FOR MEASURING GAIN OF SENSOR

    An apparatus, device and method for measuring a gain of a sensor. The apparatus comprises a current detection circuit (122) and a processing circuit (124). An input end of the current detection circuit (122) is connected to an output end of a sensor unit (110). The current detection circuit (122) is used for detecting a current signal outputted by the sensor unit and generating a corresponding detection signal. An input end of the processing circuit (124) is connected to an output end of the current detection circuit (122). The processing circuit (124) is used for calculating energy of a dark event generated in the sensor unit (110) according to the detection signal, generating an energy spectrogram of the dark event, and calculating a gain of the sensor unit (110) according to the energy spectrogram. In the apparatus, device and method for measuring a gain of a sensor, a gain of the sensor unit (110) is determined by means of the energy of the dark event in the sensor unit (110), so that the gain of the sensor unit (110) can be determined rapidly, accurately and efficiently, thereby helping to subsequently compensate gain changes of the sensor unit (110).
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  • Hybrid modulation scheme for Visible Light Communication using CMOS camera

    Xu, Yiqin   Chen, Zhitao   Gong, Zheng   Xia, Zhifeng   Yuan, Tao   Gu, Zhiliang   Zhao, Wei   Chen, Junfang  

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  • Brilliant GeV Gamma-ray flash from Inverse Compton Scattering in QED Regime

    Gong, Zheng   Hu, Ronghao   Lu, Haiyang   Yu, Jinqing   Wang, Dahui   Fu, E. G.   Chen, Jia-er   He, Xian-tu   Yan, Xueqing  

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  • TSV Extracted Equivalent Circuit Model and an On-Chip Test Solution

    Gong, Zheng   Rashidzadeh, Rashid  

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  • Metagenomic Characterization of the Viral Community of the South Scotia Ridge

    Yang, Qingwei   Gao, Chen   Jiang, Yong   Wang, Min   Zhou, Xinhao   Shao, Hongbing   Gong, Zheng   McMinn, Andrew  

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  • Ca and Sr isotope constraints on the formation of the Marinoan cap dolostones

    Wei, Guang-Yi   Hood, Ashleigh v.S.   Chen, Xi   Li, Da   Wei, Wei   Wen, Bin   Gong, Zheng   Yang, Tao   Zhang, Zhao-Feng   Ling, Hong-Fei  

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  • A Target-Free Automatic Self-Calibration Approach for Multibeam Laser Scanners

    Gong, Zheng   Wen, Chenglu   Wang, Cheng   Li, Jonathan  

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  • Extension of TEAM Force-Field Database to Ionic Liquids

    Gong, Zheng   Sun, Huai  

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  • An improved and reliable method for microalgae direct PCR

    Chen, Yuxian   Bi, Congbin   Tong, Shaoming   Gong, Zheng   Hou, Hesheng  

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  • Typha angustifolia extract reduces diet-induced hyperlipidemia in rats

    Gong, Zheng   Jiang, An-rong   Peng, Xiao-gang   Yuan, Man  

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  • A 1.2 V dual-channel 10 bit pipeline ADC in 55 nm CMOS for WLAN receivers

    Gong, Zheng   Hu, Xueqing   Yan, Jun   Shi, Yin  

    A power-efficient technique for pipeline analog-to-digital converters (ADCs) is proposed. By sharing amplifiers between I/Q channels, the power dissipation of the ADCs is reduced by almost one-half compared to conventional topologies, which makes this technique suitable for low-power direct-conversion WLAN receivers. A dual-channel ADC test chip is fabricated in 55 nm CMOS technology. The 10 bit ADC with on-chip reference generators dissipates 19.2 mW per channel from a 1.2 V supply. At an 80 MS/s sample rate, the measured spurious-free dynamic range, signal-to-noise and distortion ratio, and corresponding effective number of bits are 69.5 dB, 56.8 dB and 9.14 bits with a 1 MHz input frequency (f in), and 61.3 dB, 56.5 dB and 9.09 bits with a 15 MHz f in, respectively. The active area is 1.01 times 0.77 mm 2.
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  • Development and qualification of ITER current lead electrical insulation

    Li, Guoliang   Huang, Xiongyi   Bauer, Pierre   Fang, Linlin   Wang, Jun   Wang, Chao   Dai, Zhiheng   Liu, Chen   Gong, Zheng   Clayton, Nicholas   Piccin, Roland   Gung, Chen-yu   Zhou, Tingzhi   Ding, Kaizhong   Liu, Chenglian   Lu, Kun   Song, Yuntao   Niu, Erwu  

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