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Object detection based on combination of local and spatial information

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Journal of Systems Engineering and Electronics 2011年第4期22卷 715-720页

作者： Qinkun xiao Nan Zhang fei Li Yue Gao School of Electronics and Information Engineering Xi'an Technological University Xi'an 710032 E R. China Fujitsu Research & Development Center Co. LTD. Beijing 100025 E R. China Department of Automation Tsinghua University Beijing 100084 P. R. China

A method of object detection based on combination of local and spatial information is proposed. Firstly, the categorygiven representative images are chosen through clustering to be templates, and the local and spatial information of template are ex- tracted and generalized as the template feature. At the same time, the codebook dictionary of local contour is also built up. Secondly, based on the codebook dictionary, sliding-window mechanism and the vote algorithm are used to select initial candidate object win- dows. Lastly, the final object windows are got from initial candidate windows based on local and spatial structure feature matching. Experimental results demonstrate that the proposed approach is able to consistently identify and accurately detect the objects with better performance than the existing methods.

关键词： object detection codebook dictionary spatial matching local contour matching.

Harmonic Transfer Function Based Single-input Single-output Impedance Modeling of LCC-HVDC Systems

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Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1327-1332页

作者： Yang Wang fei Xia Ying Wang Xianyong xiao College of Electrical Engineering Sichuan UniversityChengdu 610065China

This study presents a harmonic transfer function(HTF)based single-input single-output(SISO)impedance modeling *** method converts an HTF from phase domain to sequence domain and then transforms it into an SISO impedance while preserving the frequency coupling information of different sequences and different *** of this method to a line-commutated converter based high-voltage direct current(LCC-HVDC)system are *** results demonstrate the accuracy of the derived SISO impedance,and a truncation-order selection is *** case study shows that the proposed method facilitates simpler impedance measurements and associated stability analysis.

关键词： Line-commutated converter based high-voltage direct current(LCC-HVDC) harmonic transfer function(HTF) single-input single-output(SISO)impedance frequency coupling

Influence of coating and dew point on hearth roll pickup

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Journal of Iron and Steel Research International 2019年第6期26卷 647-652页

作者： xiao-fei Zheng Yong-lin Kang Jian Zhou School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Shougang Jingtang Iron and Steel United Co. Ltd. Tangshan 063200 Hebei China

Thermal spray coatings have been widely used on hearth rolls in a continuous annealing line to improve steel sheet quality and prolong the roll service life. One of the common defects formed on a working hearth roll is the oxide pickup. The most common cause of the pickup formation is that the active Mn oxide reacts with coating. The potentials of two different coatings, CoCrAlYTa-Al2O3 (No. 1) and CoCrYNi-Y2O3 (No. 2), to duplicate pickups by reacting with Fe and Mn oxides were studied. There are three stages during pickup producing and growing. No. 2 coating effectively reduced the corrosion of Mn oxide. The characterization and modification of the surface oxide formed can be changed with different dew points. The results indicate that the dew point from — 53 to — 10 ℃ can change the depth of Mn oxide, such that an alteration can prevent the first stage and second stage and is good for preventing the pickup growing.

关键词： Pickup Coating Dew point Surface oxide Hearth roll

Cluster of differentiation antigens:essential roles in the identification of teleost fish T lymphocytes

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Marine Life Science & Technology 2022年第3期4卷 303-316页

作者： Hong‑fei Tian Jing Xing xiao‑qian Tang Heng Chi Xiu‑zhen sheng Wen‑bin Zhan Laboratory of Pathology and Immunology of Aquatic Animals KLMMEFisheries CollegeOcean University of ChinaQingdao 266003China Laboratory for Marine Fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

Cluster of differentiation(CD)antigens are cell surface molecules expressed on leukocytes and other cells associated with the immune *** that react with CD antigens are known to be one of the most essential tools for identifying leukocyte subpopulations.T lymphocytes,as an important population of leukocytes,play essential roles in the adaptive immune *** of the CD antigens expressed on T lymphocytes are used as surface markers for T lymphocyte classification,including CD3,CD4 and CD8 *** this review,we summarize the recent advances in the identification of CD molecules on T lymphocytes in teleosts,with emphasis on the functions of CD markers in the classification of T lymphocyte *** notice that genes encoding CD3,co-receptors CD4 and CD8 have been cloned in several fish species and antibodies have been developed to study protein expression in morphological and functional contexts.T lymphocytes can be divided into CD4^(+)and CD8^(+)cells discriminated by the expression of CD4 and CD8 molecules in teleost,which are functionally similar to mammalian helper T cells(Th)and cytotoxic T cells(Tc),*** studies are still needed on the particular characteristics of teleost T cell repertoires and adaptive responses,and results will facilitate the health management and development of vaccines for fish.

关键词： T lymphocytes Surface marker Classification Monoclonal antibody Fish

Signifying quantum uncertainty relations by optimal observable sets and the tightest uncertainty constants

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Science China(Physics,Mechanics & Astronomy) 2024年第9期67卷 43-50页

作者： xiao-Bin Liang Bo Li Shao-Ming fei School of Mathematics and Computer Science Shangrao Normal UniversityShangrao 334001China Quantum Information Research Center Shangrao Normal UniversityShangrao 334001China School of Mathematical Sciences Capital Normal UniversityBeijing 100048China

Quantum uncertainty relations constrain the precision of measurements across multiple non-commuting quantum mechanical ***,we introduce the concept of optimal observable sets and define the tightest uncertainty constants to accurately describe these measurement *** any quantum state,we establish optimal sets of three observables for both product and summation forms of uncertainty relations,and analytically derive the corresponding tightest uncertainty *** demonstrate that the optimality of these sets remains consistent regardless of the uncertainty relation ***,the existence of the tightest constants excludes the validity of standard real quantum mechanics,underscoring the essential role of complex numbers in this ***,our findings resolve the conjecture posed in[***.118,180402(2017)],offering novel insights and potential applications in understanding preparation uncertainties.

关键词： uncertainty relation the tightest uncertainty constants optimal observable sets

Metastatic urothelial carcinoma harboring ERBB2/3 mutations dramatically respond to chemotherapy plus anti-PD-1 antibody:A case report

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World Journal of Clinical Cases 2022年第8期10卷 2497-2503页

作者： fei-fei Yan Qi Jiang Bin Ru xiao-Jie fei Jian Ruan xiao-Chen Zhang Department of Medical Oncology the First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhou 310000Zhejiang ProvinceChina Department of Pain Medicine Zhejiang Provincial People’s HospitalHangzhou 310000Zhejiang ProvinceChina Department of Surgical Oncology the First Affiliated HospitalZhejiang University School of Medicine Hangzhou 313000Zhejiang ProvinceChina Department of Medical Oncology the First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhou 310003Zhejiang ProvinceChina

BACKGROUND Immune checkpoint inhibitors(ICIs)targeting the programmed death(PD)-1 pathway have substantially changed the clinical management of metastatic urothelial carcinoma(m UC);however,the response rate remains *** are ongoing efforts to identify robust biomarkers that can effectively predict the treatment response to *** studies have suggested that ERBB2/3 mutations are associated with the efficacy of ICIs in gallbladder *** SUMMARY We present a 59-year-old man with m UC harboring ERBB2/3 mutations(in-frame insertion of ERBB2 and ERBB3 amplification),negative PD-ligand 1 expression,and low tumor mutation *** received anti-PD-1 antibodies and paclitaxel as second-line *** two cycles of treatment,the lung metastases had significantly shrunk,achieving good partial *** six cycles of combination therapy,the patient received sindilimab 200 mg once every 3 wk as maintenance *** the last follow-up,the patient continued to exhibit a partial response and progression-free survival for as long as 19 *** ERBB2/3 mutations may represent a predictive biomarker for selecting a subgroup of m UC patients who will benefit from ICIs.

关键词： Urothelial carcinoma Bladder cancer ERBB Programmed death Sindilimab Case report

Technical assessment of synthetic natural gas (SNG) production from agriculture residuals

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Journal of Thermal Science 2013年第4期22卷 359-365页

作者： Guohui Song fei Feng Jun xiao Laihong Shen Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Department of Mechanical Technology Nanjing College of Chemical Technology

This paper presents thermodynamic evaluations of the agriculture residual-to-SNG process by thermochemical conversion, which mainly consists of the interconnected fluidized beds, hot gas cleaning, fluidized bed methanation reactor and Selexol absorption unit. The process was modeled using Aspen Plus soft-ware. The process performances, i.e., CH4 content in SNG~ higher heating value and yield of SNGexergy efficiencies with and without heat recovery, unit power consumption, were evaluated firstly. The results indicate that when the other parameters remain unchanged, the steam-to-biomass ratio at carbon boundary point is the optimal value for the process. Im proving the preheating temperatures of air and gasifying agent is beneficial for the SNG yield and exergy effi ciencies. Due to the effects of COz removal efficiency, there are two optimization objectives for the SNG produc tion process：（I） to maximize CH4 content in SNC or （II） to maximize SNG yield. Further, the comparison among different feedstocks indicates that the decreasing order of SNG yield is： corn stalk 〉 wheat straw 〉 rice straw. The evaluation on the potential of agriculture-based SNG shows that the potential annual production of agriculture re sidual-based SNG could be between 555 108 - 611 108 m3 with utilization of 100% of the available unexplored resources. The agriculture residual-based SNG could play a significant role on solving the big shortfall of China＇s natural gas supply in future.

关键词： synthetic natural gas agriculture residual biomass gasification methanation fluidized bed exergy

交联型聚乙烯醇纸张表面施胶剂的制备及其应用

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陕西科技大学学报 2025年第1期43卷 1-7页

作者：费贵强李实肖文娟杨晨榕解攀陕西科技大学化学与化工学院陕西省轻化工助剂重点实验室陕西西安710021 西安北方惠安化学工业有限公司陕西西安710302

为了改善聚乙烯醇、淀粉作为纸张表面施胶剂的应用性能,选用γ-缩水甘油醚氧丙基三甲氧基硅烷(KH560)和硼砂(STB)为交联剂,交联改性淀粉(PS)和聚乙烯醇(PVA1799),制备出不同交联程度的纸张表面施胶剂(CPSn-PVA).通过傅里叶红外光谱(FT-I... 详细信息

为了改善聚乙烯醇、淀粉作为纸张表面施胶剂的应用性能,选用γ-缩水甘油醚氧丙基三甲氧基硅烷(KH560)和硼砂(STB)为交联剂,交联改性淀粉(PS)和聚乙烯醇(PVA1799),制备出不同交联程度的纸张表面施胶剂(CPSn-PVA).通过傅里叶红外光谱(FT-IR),扫描电镜(SEM)及稳定性测试对纸张表面施胶剂的性能进行了表征,探讨了KH560和STB的添加比例对纸张施胶剂的性能以及施胶后纸张物理性能的影响.实验结果表明,当STB添加量为0.1 g、KH560添加量为3 g时,纸张施胶剂膜拉伸强度可达25.6 MPa、断裂伸长率为326%.同时,与原纸相比,多重交联型纸张表面施胶剂表现出良好的应用性能,施胶后的纸张耐折次数、撕裂指数、接触角分别提升了6700%、65.04%、89.7%.

关键词：表面施胶剂改性淀粉聚乙烯醇硅烷偶联剂稳定性耐折度

Single molecule electro-catalysis of non-fluorescent molecule

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Chinese Chemical Letters 2015年第12期26卷 1514-1517页

作者： fei-fei Li Jun-Nan Gu xiao-Chun Zhou Division of Advanced Nanomaterials Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences

Single molecule catalysis is very powerful in revealing catalytic mechanism at the single molecule *** fluorescent molecule is always necessary to take part into the catalysis directly in previous *** order to study the single molecule electro-catalysis of non-fluorescent molecule（SMECNFM） on nanocatalyst, we couple the SMECNFM with a single molecule fluorescence reaction. A certain number of fluorescent molecules will be generated and detected when the SMECNFM happens. Through this method, we can detect the electro-oxidation reaction of one HCOONa molecule. The stability of Pt nanocatalyst supported on active carbon is studied at the single molecule level by this method. This paper also provides a general way to make ultra-sensitive sensor, and to study the SMECNFM for the molecules,such as formic acid, hydrogen, oxygen, etc., on single nanoparticle.

关键词： catalysis powerful reactant silica stoichiometric detecting camera slide redox revealing