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- 저자 : Li Junbin (검색결과 3 건)
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Junbin Tan,Yuechang Wei,Yuanqing Sun,Jian Liu,Zhen Zhao,Weiyu Song,Jianmei Li,Xiao Zhang 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.63 No.-
A series of three-dimensionally ordered macroporous (3DOM) Fe–Mn oxide catalysts are prepared using the colloidal crystal template method, and their catalytic performance is tested for eliminating soot and NOx. The 3DOM Fe1–Mn3–Ox catalyst exhibits the highest activity for eliminating soot and NOx. The temperature of maximum CO2 concentration (Tm) for soot combustion is 435 °C, and that for 80% NOx conversion is 302–485 °C. The high catalytic activity of 3DOM Fe1–Mn3–Ox is due to its abundant oxygen vacancies, excellent reducibility, and sufficient acid sites. The use of low-cost catalysts will be beneficial for practical applications.
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Danning Feng,Huijun Yue,Xinyue Li,Siyang Tan,Rui Tao,Junbin Lai 한국산학기술학회 2013 SmartCR Vol.3 No.6
Spinal codes are a new kind of adaptive rateless codes. By analyzing the theory, consisting of hash-function encoding, modulation, maximum-likelihood decoding, and puncturing, the data structure was redesigned, and simulation of the whole transmission process was accomplished. The transfer rate was tested with both additive white Gaussian noise channel (AWGN channel) and binary symmetric channel (BSC). The experiment with AWGN demonstrated the rightness of our design and showed that spinal codes are extremely close to the Shannon Limit. What?s more, validity of the data structure was also proven with BSC. These results show that spinal codes are efficient and practical, which will be very useful in the near future.
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SRIM simulation of irradiation damage by protons in InAs/GaSb type-II superlattices
Zhou Jing,Hao Ruiting,Pan Xinchang,Ren Yang,Li Junbin,Zhao Jun,Kong Jincheng 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.82 No.4
With the increasing maturity of material preparation and device process technology, InAs/GaSb type-II superlattices (T2SLs) have become a crucial material system for a new generation of high-performance infrared detectors, which can play a signifcant role in laser detection and satellite remote sensing applications. However, numerous particles such as protons and electrons in the complex space environment are irradiated to produce ionization and displacement damage, making the device’s performance decline and causing work failure. Therefore, in this paper, we employ the Stopping and Range of Ions in Matter (SRIM) to simulate the irradiation damage of protons on InAs/GaSb T2SLs and calculate the vacancy, energy loss, and the nuclear and electronic stopping power. Under diferent energy and irradiation fuences, which harnesses atomic displacements per atom (DPA) to investigate the irradiation damage of protons on InAs/GaSb T2SLs. The results demonstrate that the higher the proton energy, the more concentrated its trajectory in the target material, and the smaller the cross-section of phase interaction with the target material, as well as the smaller energy transferred to the lattice atoms, resulting in a higher concentration of vacancies introduced by low-energy proton irradiation compared with high-energy protons. Meanwhile, the projected range becomes farther and farther, and the DPA slightly diminishes, indicating that the displacement damage is due to proton irradiation and is decreasing with the increase of proton energy.
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