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Low Light Level Image Enhancement Based on Multi-layer Slicing Photon Localization Algorithm

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Chinese Journal of Electronics 2018年第3期27卷 521-526页

作者： YING Changsheng ZHAO Peng yue dan LI Ye School of Science Changchun University of Science and Technology School of Computer Science and Technology Jilin Normal University

Low light level(LLL) images, which were captured by Intensified CCD(ICCD) camera equipped with an image intensifier, suffer low spatial resolution and contrast due to noise and dispersion. By dividing the integration time into intervals short enough, we obtain photon images where photon formed spots were nearly nonoverlapping. In order to enhance LLL images, we propose a Multi-layer slicing(MLS) photon localization algorithm based on photon images. The photon image is sliced by different planes. Photon spatial distribution(PSD) information is acquired by using pro jected area ratio, circularity and the number of slices. The enhanced LLL image is obtained by accumulating time-domain correlated PSD images. Experimental results show that the visual effects,spatial frequencies and contrast of the enhanced image are significantly improved.

关键词： Noise Dispersion Spatial resolution Multi-layer slicing(MLS) Photon spatial distribution(PSD)

In situ reaction mechanism of MgAlON in Al–Al2O3–MgO composites at 1700°C under flowing N2

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International Journal of Minerals,Metallurgy and Materials 2017年第9期24卷 1061-1066页

作者： Shang-hao Tong Yong Li Ming-wei Yan Peng Jiang Jia-jia Ma dan-dan yue School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China

The Al–AlO–MgO composites with added aluminum contents of approximately 0wt%, 5wt%, and 10wt%, named as M, M, and M, respectively, were prepared at 1700°C for 5 h under a flowing Natmosphere using the reaction sintering method. After sintering, the Al–AlO–MgO composites were characterized and analyzed by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The results show that specimen Mwas composed of MgO and MgAlO. Compared with specimen M, specimens Mand Mpossessed MgAlON, and its production increased with increasing aluminum addition. Under an Natmosphere, MgO, AlO, and Al in the matrix of specimens Mand Mreacted to form MgAlON and AlN-polytypoids, which combined the particles and the matrix together and imparted the Al–AlO–MgO composites with a dense structure. The mechanism of MgAlON synthesis is described as follows. Under an Natmosphere, the partial pressure of oxygen is quite low; thus, when the Al–AlO–MgO composites were soaked at 580°C for an extended period, aluminum metal was transformed into AlN. With increasing temperature, AlOdiffused into AlN crystal lattices and formed AlN-polytypoids; however, MgO reacted with AlOto form MgAlO. When the temperature was greater than(1640 ± 10)°C, AlN diffused into AlOand formed spinel-structured AlON. In situ MgAlON was acquired through a solid-solution reaction between AlON and Mg AlOat high temperatures because of their similar spinel structures.

关键词： composites metal aluminum nitrogen atmosphere magnesium aluminum oxynitride reaction mechanism

Passive control for fuzzy system with time-delay

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Passive control for fuzzy system with time-delay

Effectively enhanced photoluminescence of CePO_(4):Tb^(3+)nanorods combined with carbon dots

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作者： yue dan Liu Xiangjie Yao Xiuming School of Control and Computer Engineering North China Electric Power University Department of Automation North China Electric Power University

ISBN: (纸本)9781467355339

In this paper, a delay partitioning approach is introduced to solve problems of passivity and passification for continuous T-S fuzzy system with time delay. By constructing a Lyapunov-Krasovskii functional, delay-dependent passivity/passification performance conditions are formulated in terms of linear matrix inequalities（LMIs）. Finally, a numerical example is used to illustrate the effectiveness of the proposed approaches which can futher reduce conservatism.

关键词： T-S fuzzy system delay partitioning time-delay system LMI

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Journal of Rare Earths 2022年第7期40卷 1007-1013页

作者： Yanyan Wang dan yue Boshi Tian Weidong Li Bing Zhang Liu Yang yue Li Zhenling Wang Yilei Zhang Henan International Joint Laboratory of Rare Earth Composite Materials College of Materials EngineeringHenan Key Laboratory of Electronic Ceramic Materials and ApplicationHenan University of EngineeringXinzheng 451191China College of Chemistry Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Rare Earth Functional Materials Zhoukou Normal UniversityZhoukou 466001China Civil&Mechanical Engineering University of CanterburyChristchurch8140New Zealand

CePO_(4):Tb^(3+)nanorods were successfully obtained via a simple hydrothermal method and combined with carbon dots(CDs)to obtain CDs@CePO_(4):Tb^(3+)*** to the combination of CDs,the emission intensity of CDs@CePO_(4):Tb^(3+)nanorods increases about 92 times,compared with that of CePO_(4):Tb^(3+)*** combination of CDs and CePO_(4):Tb^(3+)nanorods was confirmed by Fourier transform infrared spectroscopy(FTIR),transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS)and so *** mechanism of luminescence enhancement may be attributed to some aspects:the formation of hexagonal phase results in the increase of crystal field symmetry,and the energy transfer among CDs,Ce^(3+)and Tb^(3+)ions,which causes the Tb^(3+)ions in CDs@CePO_(4):Tb^(3+)nano rods to obtain mo re excited energy and less non-radiative atte nuation co mpared to CePO_(4):Tb^(3+)nano *** luminescence enhancement strategy through combination of CDs would provide a simple and effective approach for other rare earth ions doped luminescent materials.

关键词： CePO_(4) Rare earth ions Doping Carbon dots Photoluminescence enhancement

The review of RFID applications in global postal and courier services

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The Journal of China Universities of Posts and Telecommunications 2006年第4期13卷 106-110页

作者： ZHANG Xiao-dan yue Shu-jie WANG Wei-min Postal communication management department Shijiazhuang Post and Telecommunication Technical College Shijiazhuang 050021 China

On the basis of several practical applications in many countries, this article reviews the potential market scale of radio frequency identification （RFID） and its applications in global postal and courier services through studies and analyses. It gives some suggestions and options in the development of RFID and its application in postal and courier services.

关键词： RFID application tag postal service courier

Controllable synthesis of Eu3+ ions doped Zn（OH）F and ZnO micro-structures:Phase,morphology and luminescence property

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Journal of Rare Earths 2019年第9期37卷 955-960,I0003页

作者： Zhiyuan Chen Jingbin Huang Yanyan Wang dan yue Zhenling Wang Jingyang Niu Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Chemical EngineeringHenan UniversityKaifeng 475004China College of Chemistry and Molecular Engineering Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Rare Earth Functional Materials Zhoukou Normal UniversityZhoukou 466001China

Eu3+ions doped Zn(OH)F and ZnO micro-structures with specific morphologies were synthesized by a simple hydrothermal method only through altering the addition amount of NH4F and hexamethylenetetramine(HMT).The phase structure,morphology and luminescence properties of the as-prepared samples were characterized by X-ray powder diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),photoluminescence(PL)spectra and *** results indicate that the obtained Zn(OH)F:Eu^3+samples possess net-like and dandelion-like morphologies,which have an identical orthorhombic phase *** is found that the addition amount of raw materials such as NH4F and HMT plays a critical role for the formation of Zn(OH)F:Eu^3+.If the addition amounts of NH4F or HMT are reduced by half,the hexagonal ZnO:Eu^3+sample with peanut-like morphology can be *** the excitation of UV light,both the as-prepared Zn(OH)F:Eu^3+and ZnO:Eu^3+samples exhibit the characteristic emission of the doped Eu^3+.

关键词： Eu3+ions Doping Zn(OH)F ZnO Luminescence Rare earths

Expression of TRPC6 in benign and malignant human prostate tissues

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Asian Journal of Andrology 2009年第5期11卷 541-547,I0001页

作者： dan yue Yong Wang Jian-Ying Xiaot Ping Wang Chang-Shan Ren Cancer Research Institute First Affiliated Hospital China Medical University Shenyang 110001 China Department of Urology Fourth Affiliated Hospital China Medical University Shenyang 110032 China Department of Biochemistry Liaoning Medical University Jinzhou 121001 China

We investigated the expression of transient receptor potential canonical 6 （TRPC6） protein in benign and malignant human prostate tissues and in prostate cancer cell lines and the association with the stage, grade and androgen responsiveness of the tumors. Immunohistochemical techniques, Western blot and reverse transcription polymerase chain reaction （RT-PCR） were used to investigate TRPC6 expression. TRPC6 protein was detected in 9 of 20 （45.0%） of benign prostatic hyperplasia （BPH） cases, and there was a significant difference compared with prostate cancer （129 of 149 [86.6%]）（P 〈 0.01）. TRPC6 expression was associated with the histological grade and extraprostatic extension （P 〈 0.01）. Tumors of higher stage tended to have a higher frequency of TRPC6 protein staining, but the difference was not significant among T2, T3 and T4. TRPC6 expression difference between androgen-independent （AI） tumors and androgen-dependent （AD） tumors was not statistically significant. TRPC6 was also observed in prostate cancer cell lines. In summary, TRPC6 is detected in benign and malignant human prostate tissues and prostate cancer cell lines and is associated with the histological grade, Gleason score and extraprostatic extension of prostate cancer.

关键词： benign prostatic hyperplasia immunohistochemistry prostate cancer TRPC6

A low-complexity multiple signal representation scheme in downlink OFDM-CDMA

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Science in China(Series F) 2009年第12期52卷 2433-2444页

作者： dan LiLin XIAO yue CHENG Peng WU Gang LI ShaoQian National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of China Chengdu 610054 China

OFDM-CDMA is an attractive technique for broadband wireless communication. However, the high peakto-average power ratio （PAPR） of the downlink signals, generated from multiple spread codes, remains a serious problem. In this paper, a low-complexity multiple signal representation （MSR） scheme is proposed to control the PAPR problem in downlink OFDM-CDMA systems. The proposed scheme generates multiple candidate signals by a novel user grouping scheme, which is without distortion and can provide more PAPR reduction than the conventional MSR schemes, such as partial transmit sequence （PTS） and selective mapping （SLM）. Furthermore, a low-complexity processing structure is developed using a novel joint spreading and inverse fast Fourier transform （S-IFFT） to simplify the generation of multiple candidate signals. Complexity analysis and numerical results show that the OFDM-CDMA systems employing the proposed scheme have better tradeoff between PAPR reduction and computational complexity, compared with the conventional MSR schemes.

关键词： OFDM-CDMA spread-IFFT (S-IFFT) multiple signal representation (MSR) user grouping

Update and latest advances in mechanisms and management of colitis-associated colorectal cancer

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World Journal of Gastrointestinal Oncology 2023年第8期15卷 1317-1331页

作者： Wan-yue dan Guan-Zhou Zhou Li-Hua Peng Fei Pan Department of Gastroenterology and Hepatology The First Medical CenterChinese PLA General HospitalBeijing 100853China Medical School Nankai UniversityTianjin 300071China

Colitis-associated colorectal cancer(CAC)is defined as a specific cluster of colorectal cancers that develop as a result of prolonged colitis in patients with inflammatory bowel disease(IBD).Patients with IBD,including ulcerative colitis and Crohn’s disease,are known to have an increased risk of developing *** the incidence of CAC has significantly decreased over the past few decades,individuals with CAC have increased mortality compared to individuals with sporadic colorectal cancer,and the incidence of CAC increases with *** inflammation is generally recognized as a major contributor to the pathogenesis of *** has been shown to progress from colitis to dysplasia and finally to *** evidence suggests that multiple immune-mediated pathways,DNA damage pathways,and pathogens are involved in the pathogenesis of *** the past decade,there has been an increasing effort to develop clinical approaches that could help improve outcomes for CAC *** surveillance plays an important role in reducing the risk of advanced and interval *** is generally recommended that CAC patients undergo endoscopic removal or *** review summarizes the current understanding of CAC,particularly its epidemiology,mechanisms,and *** focuses on the mechanisms that contribute to the development of CAC,covering advances in genomics,immunology,and the microbiome;presents evidence for management strategies,including endoscopy and colectomy;and discusses new strategies to interfere with the process and development of *** scientific findings will pave the way for the management of CAC in the near future.

关键词： Colitis-associated colorectal cancer Inflammatory bowel disease Colonoscopic surveillance Epidemiology Mechanisms Management