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Cu-Fe_(3)O_(4)/CDQ磁性仿酶催化剂的制备及性能研究

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环境科学学报 2024年第8期44卷 239-249页

作者：缪光硕李文兵罗俊锋吴伟浩郭璇孟瑶周云辉吴祖杰李享成武汉科技大学化学与化工学院武汉430081 炼焦煤资源绿色开发全国重点实验室平顶山467000 省部共建耐火材料与冶金国家重点实验室武汉430081

采用共沉淀法、浸渍法和煅烧法合成了Cu-Fe_(3)O_(4)/CDQ磁性非均相仿酶催化剂,并利用SEM、BET、FTIR、XRD、VSM、XPS等对合成催化剂进行了表征.同时,系统考察了该催化剂在不同体系以及不同变量(如pH、H2O2投加量和Cu-Fe_(3)O_(4)负载... 详细信息

采用共沉淀法、浸渍法和煅烧法合成了Cu-Fe_(3)O_(4)/CDQ磁性非均相仿酶催化剂,并利用SEM、BET、FTIR、XRD、VSM、XPS等对合成催化剂进行了表征.同时,系统考察了该催化剂在不同体系以及不同变量(如pH、H2O2投加量和Cu-Fe_(3)O_(4)负载量等因素)对其降解苯酚性能的影响,并探究了其降解机理.结果表明,Cu-Fe_(3)O_(4)/CDQ材料具有介孔结构,Cu-Fe_(3)O_(4)纳米颗粒以球形颗粒的形式均匀分布在介孔改性焦炭上,其平均粒径为46.63 ***-Fe_(3)O_(4)/CDQ复合材料在pH=4~12范围处理含酚废水过程中具有较高的降解性能且表现出良好的稳定性和可重复使用性能.120 min内,在1 g·L^(-1)Cu-Fe_(3)O_(4)/CDQ、0.5 mL H2O2、Cu-Fe_(3)O_(4)负载量为40%、pH为10条件下,苯酚去除率达98.5%.铜离子和铁离子加速了Cu-Fe_(3)O_(4)/CDQ反应体系中·OH产生速率,促进了苯酚的降解.

关键词：改性焦炭 Cu-Fe_(3)O_(4)/CDQ 降解磁性苯酚

高强钢丝表面封装FBG传感器的温度响应研究

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公路交通技术 2024年第1期40卷 136-144页

作者：严琨吴伟豪徐代苓张恒李琦招商局重庆交通科研设计院有限公司重庆400067 桥梁工程安全与韧性全国重点实验室重庆400067 中国电建华东勘测设计研究院有限公司杭州311100 重庆万桥交通科技发展有限公司重庆401336 中交公路长大桥建设国家工程研究中心有限公司北京100088

为解决桥梁缆索高强钢丝表面封装光纤光栅应变传感器(HSW-FBG传感器)的温度修正问题,建立HSWFBG传感器的温度响应模型并推导其温度灵敏度系数计算公式,基于正交试验设计并制作9根HSW-FBG传感器,通过水浴试验对传感器的温度响应进行了验... 详细信息

为解决桥梁缆索高强钢丝表面封装光纤光栅应变传感器(HSW-FBG传感器)的温度修正问题,建立HSWFBG传感器的温度响应模型并推导其温度灵敏度系数计算公式,基于正交试验设计并制作9根HSW-FBG传感器,通过水浴试验对传感器的温度响应进行了验证与分析。结果表明:FBG传感器在封装后其温度灵敏度系数出现了较大变化,通过水浴试验验证了HSW-FBG传感器的温度灵敏度系数计算公式的准确性;通过影响参数分析及极差分析,温度灵敏度系数的影响顺序由主到次依次为基体热应力系数、光纤初始波长、封装材料热应力系数、封装层横截面面积,其中基体材料对HSW-FBG传感器温度响应具有决定性作用。HSW-FBG传感器的温度响应研究结果将为其工程应用打下坚实的基础。

关键词：桥梁缆索 HSW-FBG传感器温度灵敏度系数正交试验设计水浴试验极差分析

An embedded single-board computer for BPM of SSRF

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Nuclear Science and Techniques 2011年第4期22卷 193-199页

作者： CHEN Kai LIU Shubin YAN Han wu weihao ZHAO Lei AN Qi LENG Yongbin YI Xing YAN Yingbing LAI Longwei Department of Modern Physics University of Science and Technology of China Hefei 230026 China State Key Laboratory of Particle Detection & Electronics Hefei 230026 China Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China

An embedded single-board computer (SBC) system based on AT91RM9200 was designed for monitoring and controlling the digital beam position monitor system of Shanghai Synchrotron Radiation Facility (SSRF) through the Virtex-4 FPGA in the digital processing *** SBC transfers the configuration commands from the remote EPICS to the FPGA,and calculates the beam position *** interface between the FPGA and the SBC is the Static Memory Controller (SMC) with a peak transfer speed of up to 349 *** 100 Mb Ethernet is used for data transfer between the EPICS and SBC board,and a serial port serves as monitoring the status of the embedded *** results indicate that the SBC board functions well.

关键词：上海同步辐射装置单板计算机嵌入式系统 AT91RM9200 BPM 存储控制器光源 Virtex

A beam position measurement system of fully digital signal processing at SSRF

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Nuclear Science and Techniques 2012年第2期23卷 75-82页

作者： YAN Han ZHAO Lei LIU Shubin CHEN Kat wu weihao AN Qi LENG Yongbin YI Xing YAN Yingbing LAI Longwei State Key Laboratory of Particle Detection&Electronics University of Science and technology of ChinaHefei230026China Anhui Key Laboratory of Physical Electronics Department of Modern PhysicsUniversity of Science and technology of ChinaHefei230026China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai201800China

This fully digital beam position measurement instrument is designed for beam position monitoring and machine research in Shanghai Synchrotron Radiation Facility. The signals received from four position-sensitive detectors are narrow pulses with a repetition rate up to 499.654 MHz and a pulse width of around 100 ps, and their dynamic range could vary over more than 40 dB in machine research. By the employment of the under-sampling technique based on high-speed high-resolution A/D conversion, all the processing procedure is performed fully by the digital signal processing algorithms integrated in one single Field Programmable Gate Array. This system functions well in the laboratory and commissioning tests, demonstrating a position resolution (at the turn by turn rate of 694 kHz) better than 7 μm over the input amplitude range of -40 dBm to 10 dBm which is well beyond the requirement.

关键词：上海同步辐射装置位置测量系统信号处理技术光束数字信号处理算法现场可编程门阵列位置敏感探测器光源

In-doping collaboratively controlling back interface and bulk defects to achieve efficient flexible CZTSSe solar cells

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Journal of Energy Chemistry 2024年第2期89卷 10-17,I0002页

作者： Quanzhen Sun Yifan Li Caixia Zhang Shunli Du weihao Xie Jionghua wu Qiao Zheng Hui Deng Shuying Cheng Institute of Micro-Nano Devices and Solar Cells College of Physics and Information EngineeringFuzhou UniversityFuzhou 350108FujianChina Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108FujianChina Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou 213164JiangsuChina

Focusing on the low open circuit voltage(V_(OC))and fill factor(FF)in flexible Cu_(2)ZnSn(S,Se)_(4)(CZTSSe)solar cells,indium(In)ions are introduced into the CZTSSe absorbers near Mo foils to modify the back interface and passivate deep level defects in CZTSSe bulk concurrently for improving the performance of flexible *** results show that In doping effectively inhibits the formation of secondary phase(Cu(S,Se)_(2))and *** studies demonstrate that the barrier height at the back interface is decreased and the deep level defects(Cu_(Sn)defects)in CZTSSe bulk are ***,the carrier concentration is increased and the V_(OC) deficit(V_(OC,def))is decreased significantly due to In ***,the flexible CZTSSe solar cell with 10.01%power conversion efficiency(PCE)has been *** synergistic strategy of interface modification and bulk defects passivation through In incorporation provides a new thought for the fabrication of efficient flexible kesterite-based solar cells.

关键词： Flexible solar cells Cu_(2)ZnSn(S,Se)_(4) Back interface Deep level defects Barrier height

Glossy15 Plays an Important Role in the Divergence of the Vegetative Transition between Maize and Its Progenitor, Teosinte

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Molecular Plant 2017年第12期10卷 1579-1583页

作者： Dingyi Xu Xufeng Wang Cheng Huang Guanghui Xu Yameng Liang Qiuyue Chen Chenglong Wang Dan Li Jinge Tian Lishuan wu Yaoyao wu Li Guo Xuehan Wang weihao wu Weiqiang Zhang Xiaohong Yang Feng Tian National Maize Improvement Center of China Beijing Key Laboratory of Crop Genetic Improvement Laboratory of Crop Heterosis and Utilization China Agricultural University Beijing 100193 China Department of Crop Physiology and Cultivation China Agricultural University Beijing 100193 China

Dear Editor,The timing of developmental transitions is important for plant growth and environmental adaptation. All plants undergo a series of developmental transitions during their life cycles, and each of these phases is characterized by unique morphological and physiological attributes （Baurle and Dean, 2006）. In maize, the vegetative transition from juvenile-to-adult vegetative development occurs in a coordinated manner and is marked by the production of leaves that differ in a suite of morphological and physiological traits, many of which contribute to fitness and crop productivity （Moose and Sisco, 1994）. Significant advances have been made in understanding the molecular mechanisms regulating the juvenile-to-adult vegetative transition.

关键词： POSTDOMESTICATION SPREAD PHASE-CHANGE DOMESTICATION ZMCCT GENE

Measurement of solar pp neutrino flux using electron recoil data from PandaX-4T commissioning run

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Chinese Physics C 2024年第9期48卷 1-7,300页

作者： Xiaoying Lu Abdusalam Abdukerim Zihao Bo Wei Chen Xun Chen Yunhua Chen Chen Cheng Zhaokan Cheng Xiangyi Cui Yingjie Fan Deqing Fang Lisheng Geng Karl Giboni Xuyuan Guo Chencheng Han Ke Han Changda He Jinrong He Di Huang Junting Huang Zhou Huang Ruquan Hou Yu Hou Xiangdong Ji Yonglin Ju Chenxiang Li Jiafu Li Mingchuan Li Shuaijie Li Tao Li Qing Lin Jianglai Liu Congcong Lu Lingyin Luo Yunyang Luo Wenbo Ma Yugang Ma Yajun Mao Yue Meng Xuyang Ning Binyu Pang Ningchun Qi Zhicheng Qian Xiangxiang Ren Nasir Shaheed Xiaofeng Shang Xiyuan Shao Guofang Shen Manbin Shen Lin Si Wenliang Sun Yi Tao Anqing Wang Meng Wang Qiuhong Wang Shaobo Wang Siguang Wang Wei Wang Xiuli Wang Xu Wang Zhou Wang Yuehuan Wei Mengmeng wu weihao wu Yuan wu Mengjiao Xiao Xiang Xiao Kaizhi Xiong Binbin Yan Xiyu Yan Yong Yang Chunxu Yu Ying Yuan Zhe Yuan Youhui Yun Xinning Zeng Minzhen Zhang Peng Zhang Shibo Zhang Shu Zhang Tao Zhang Wei Zhang Yang Zhang Yingxin Zhang Yuanyuan Zhang Li Zhao Jifang Zhou Ning Zhou Xiaopeng Zhou Yubo Zhou Zhizhen Zhou Research Center for Particle Science and Technology Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education Shandong UniversityQingdao 266237China School of Physics and Astronomy Shanghai Jiao Tong UniversityKey Laboratory for Particle Astrophysics and Cosmology(MoE)Shanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China New Cornerstone Science Laboratory Tsung-Dao Lee InstituteShanghai Jiao Tong UniversityShanghai 200240China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213China Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province Liangshan 615000China Yalong River Hydropower Development Company Ltd.288 Shuanglin RoadChengdu 610051China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Department of Physics Yantai UniversityYantai 264005China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China School of Physics Beihang UniversityBeijing 102206China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 102206China Peng Huanwu Collaborative Center for Research and Education Beihang UniversityBeijing 100191China Southern Center for Nuclear-Science Theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Physics University of MarylandCollege ParkMaryland 20742USA State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China School of Physics Peking UniversityBeijing 100871Ch

The proton-proton(pp)fusion chain dominates the neutrino production in the *** uncertainty of the predicted pp neutrino flux is at the sub-percent level,whereas that of the best measurement is O(10%).In this study,for the first time,we measure solar pp neutrinos in the electron recoil energy range from 24 to 144 keV using the PandaX-4T commissioning data with 0.63 tonne×year *** pp neutrino flux is determined as(8.0±3.9(stat)±10.0(syst))×1010 s^(-1)cm^(-2),which is consistent with the Standard Solar Model and existing measurements,corresponding to an upper flux limit of 23.3×10^(10)s^(-1)cm^(-2)at 90%C.L..

关键词： solar pp neutrino flux PandaX-4T electron recoil spectrum

Homer1a reduces inflammatory response after retinal ischemia/reperfusion injury

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Neural Regeneration Research 2024年第7期19卷 1608-1617页

作者： Yanan Dou Xiaowei Fei Xin He Yu Huan Jialiang Wei Xiuquan wu weihao Lyu Zhou Fei Xia Li Fei Fei Department of Neurosurgery Xijing HospitalAir Force Military Medical UniversityXi’anShaanxi ProvinceChina Department of Ophthalmology Xijing HospitalAir Force Military Medical UniversityXi’anShaanxi ProvinceChina

Elevated intraocular pressure(IOP)is one of the causes of retinal ischemia/reperfusion injury,which results in NRP3 inflammasome activation and leads to visual *** is repo rted to play a protective role in neuroinflammation in the ***,the effects of Homerla on NLRP3inflammasomes in retinal ischemia/reperfusion injury caused by elevated IOP remain *** our study,animal models we re constructed using C57BL/6J and Homer1^(flox/-)/Homerla^(+/-)/Nestin-Cre^(+/-)mice with elevated IOP-induced retinal ischemia/repe rfusion *** in vitro expe riments,the oxygen-glucose deprivation/repe rfusion injury model was constructed with M uller *** found that Homerla ove rexpression amelio rated the decreases in retinal thickness and Muller cell viability after ischemia/reperfusion ***,Homerla knockdown promoted NF-κB P65^(Ser536)activation via caspase-8,NF-κB P65 nuclear translocation,NLRP3 inflammasome formation,and the production and processing of interleukin-1βand inte *** opposite results we re observed with Homerla ove ***,the combined administration of Homerla protein and JSH-23 significantly inhibited the reduction in retinal thickness in Homer1^(flox/-)Homer1a^(+/-)/Nestin-Cre^(+/-)mice and apoptosis in M uller cells after ischemia/reperfusion *** together,these studies demonstrate that Homer1a exerts protective effects on retinal tissue and M uller cells via the caspase-8/NF-KB P65/NLRP3 pathway after I/R injury.

关键词： caspase-8 Homer1a interleukin-18 interleukin-1β intraocular pressure ischemia/reperfusion injury JSH-23 Müller cells NLRP3 nuclear factor-kB p65 retina

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基于改进Yolo v3的电连接器缺陷检测

传感技术学报 2020年第2期33卷 299-307页

作者：吴伟浩李青中国计量大学机电工程学院杭州310018

针对电连接器缺陷检测目前存在自动化程度低、检测精度低、检测速度慢以及鲁棒性较差等问题,提出了一种改进的Yolo v3算法来检测电连接器的缺陷。首先采用K-means聚类算法对本文数据集进行聚类分析得到3种宽高比的候选框,针对本文缺陷... 详细信息

针对电连接器缺陷检测目前存在自动化程度低、检测精度低、检测速度慢以及鲁棒性较差等问题,提出了一种改进的Yolo v3算法来检测电连接器的缺陷。首先采用K-means聚类算法对本文数据集进行聚类分析得到3种宽高比的候选框,针对本文缺陷对象提高检测精度;对主干网络第三个残差块输出的8倍降采样特征图进行4倍上采样,将得到的特征图与第二个残差块输出的2倍降采样特征图进行拼接得到融合特征检测层;将目标检测层之前经过的6个DBL单元改为2个DBL单元加上2个残差单元,以提高特征的复用与获取;另外本文选择单尺度特征图进行目标检测,而不是原网络的多尺度预测,既节省了计算量,又一定程度上避免误检。通过定性与定量的实验结果表明,本文改进后的Yolo v3算法对电连接器缺陷检测有着更好的性能以及速度,准确率为93.5%,相较于Faster R-CNN更加准确,原Yolo v3更加快速,基本上满足了工业现场对电连接器检测的要求。

关键词：缺陷检测电连接器机器视觉深度学习 Yolo v3