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激光/光纤传感技术研究及其在煤矿安全监测预警中的应用

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激光与光电子学进展 2021年第13期58卷 225-235页

作者：刘统玉王兆伟李振金光贤王纪强胡杰李艳芳魏玉宾宁雅农杨青山齐鲁工业大学(山东省科学院)激光研究所山东济南250103 山东微感光电子有限公司山东济南250103 广东感芯激光科技有限公司广东佛山528226

我国煤矿工作条件复杂,存在瓦斯爆炸、火灾、设备故障、次生火灾等安全隐患。光纤/激光传感器以其无源、本质安全的特性,以及高精度、低漂移等性能,在煤矿安全领域具有传统电子类传感器无法比拟的优势。本文介绍了激光甲烷、一氧化碳等... 详细信息

我国煤矿工作条件复杂,存在瓦斯爆炸、火灾、设备故障、次生火灾等安全隐患。光纤/激光传感器以其无源、本质安全的特性,以及高精度、低漂移等性能,在煤矿安全领域具有传统电子类传感器无法比拟的优势。本文介绍了激光甲烷、一氧化碳等气体传感器,光纤光栅风速传感器和光纤分布式温度传感器的研究进展,及其在智能矿山建设中的煤矿瓦斯监控、智能防火和安全监测预警等典型应用。

关键词：光纤光学煤矿安全激光气体传感器光纤光栅风速传感器光纤分布式温度传感器

High-efficiency nonlocal reflection-type vortex beam generation based on bound states in the continuum

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National Science Review 2023年第5期10卷 201-207页

作者： tongyu Li Jiajun Wang Wenjie Zhang Xinhao Wang Wenzhe liu Lei Shi Jian Zi State Key Laboratory of Surface Physics Key Laboratory of Micro-and Nano-Photonic Structures (Ministry of Education) and Department of PhysicsFudan University Department of Physics The Hong Kong University of Science and Technology

Momentum-space polarization vortices centered at symmetry-protected bound states in the continuum of a periodic structure,*** crystal slab,provide a novel nonlocal approach to generate vortex *** approach enjoys a great convenience of no precise alignment requirements,although the generation efficiency of the nonlocal generators requires further optimization before the practical *** this work,we propose a temporal-coupled-mode-theory-based guideline for high-efficiency nonlocal reflection-type vortex generator *** conversion efficiency of the vortex beam is found to be limited by the ratio of the radiative loss to the intrinsic absorption in practical *** increase this ratio through mode selection and structure design,the photonic crystal slabs are theoretically designed and experimentally characterized,showing a maximum on-resonance conversion efficiency of up to 86%.Combining high efficiency with simple fabrication and no re quirement for precise alignment,reflection-type photonic crystal slabs could offer a new and competitive way to generate vortex beams flexibly.

关键词： photonic crystal slab vortex beam bound states in the continuum

基于分层回归法分析本科护生公正世界信念与责任心的关联性

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卫生职业教育 2024年第2期42卷 85-88页

作者：吕童玉刘晓冉张雪雁滨州医学院山东烟台264003

选取2023年1—2月山东省某高校的503名护生作为调查对象,采用一般资料调查表、责任心量表及大学生公正世界信念量表收集资料,以了解护生责任心与公正世界信念现状及影响因素,分析二者间关系,为提升护生责任心提供参考。

关键词：护生公正世界信念责任心

Ti元素对工业级Zr-Ti合金电化学腐蚀行为的影响

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有色金属工程 2024年第10期14卷 31-38页

作者：魏统宇樊蕾袁波严宝辉田锋范清松刘海明西安西部新锆科技股份有限公司西安710016 中核(天津)机械有限公司天津300399

通过恒电位极化曲线法研究了工业级Zr-xTi(x=0、5、10、15)合金板材在6 mol/L的亚沸腾态浓硝酸环境中的电化学腐蚀行为。通过测试材料的动电位极化曲线和电化学阻抗谱等电化学参数来评价不同Ti含量Zr-Ti合金的腐蚀性能,并利用扫描电子... 详细信息

通过恒电位极化曲线法研究了工业级Zr-xTi(x=0、5、10、15)合金板材在6 mol/L的亚沸腾态浓硝酸环境中的电化学腐蚀行为。通过测试材料的动电位极化曲线和电化学阻抗谱等电化学参数来评价不同Ti含量Zr-Ti合金的腐蚀性能,并利用扫描电子显微镜(SEM)和3D超景深显微镜对材料腐蚀形貌进行观察。结果表明:添加Ti元素可以减小合金材料的自腐蚀电流密度I_(corr),提高合金材料表面的电荷转移电阻R_(ct),对材料的耐腐蚀性能有利;当Ti含量添加至5%,有明显的钝化区间,合金材料具有最小的自腐蚀电流密度I_(corr),约为4.0923×10^(-6)A/cm^(2),电荷转移电阻R_(ct)也最大,约为16514Ω·cm^(2),并且其合金表面氧化膜光滑平整,腐蚀程度最弱,表明Zr-5Ti合金材料的腐蚀速率较低,具有优异的耐硝酸腐蚀性能。

关键词：乏燃料后处理锆合金浓硝酸电化学腐蚀腐蚀形貌

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激光甲烷传感器及其交叉干扰实验研究

科学与管理 2016年第3期36卷 37-41页

作者：常琳李艳芳刘嘉张婷婷胡杰魏玉宾刘统玉安标国家矿用产品安全标志中心北京100013 北京理工大学光电学院北京100081 山东省光纤传感重点实验室山东省科学院激光研究所济南250014 山东微感光电子有限公司济南250014

基于激光光谱吸收的原理,研究了激光甲烷传感器的测量原理和系统设计,开展了实验室环境下水汽、一氧化碳和二氧化碳等气体对甲烷测量结果的交叉干扰,给出了实验数据并进行了相关分析。实验证明激光甲烷传感器具有测量准确,稳定性高,抗... 详细信息

基于激光光谱吸收的原理,研究了激光甲烷传感器的测量原理和系统设计,开展了实验室环境下水汽、一氧化碳和二氧化碳等气体对甲烷测量结果的交叉干扰,给出了实验数据并进行了相关分析。实验证明激光甲烷传感器具有测量准确,稳定性高,抗气体交叉干扰等特性。

关键词：激光光谱吸收交叉干扰甲烷检测

Broadband near-infrared luminescence and energy transfer of Cr^(3+),Ce^(3+) co-doped Ca_(2)LuHf_(2)Al_(3)O_(12) phosphors

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Journal of Rare Earths 2021年第3期39卷 269-276,I0002页

作者： Jinpin Wu Weidong Zhuang Ronghui liu Yuanhong liu tongyu Gao Chunpei Yan Min Cao Junhang Tian Xiaoxia Chen National Engineering Research Center for Rare Earth Materials GRINM Croup Co.Ltd.Beijing 100088China GRIREM Advanced Materials Co. Ltd.Beijing 100088China General Research Institute for Nonferrous Metals Beijing 100088China Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices School of ChemistryBiology and Materials ScienceEast China University of TechnologyNanchang 330046China

Broadband near-infrared phosphors are highly desirable for food *** Ca_(2)LuHf_(2)Al_(3)O_(12):Cr^(3+)(CLHA:Cr^(3+)) and Ca_(2)LuHf_(2)Al_(3)O_(12):Ce^(3+),Cr^(3+)(CLHA:Ce^(3+),Cr^(^(3+))) phosphors were synthesized by the conventional high-temperature solid state *** CLHA:Cr^(3+)phosphor,with a good thermal stability,shows a red shift owing to radiation reabsorption and non-radiative transition with increasing Cr^(3+)*** co-doped sample,the emission intensity of Cr^(3+)can be enhanced by three times due to the energy transfer from Ce^(3+)to Cr^(3+),which can be evidenced by a significant overlap between the PLE of Cr^(3+)single-doped phosphor and the PL of Ce^(3+)single-doped *** addition,the mechanism of energy transfer is identified as a quadrupole-quadrupole interaction according to decay Lifetime and Dexter’s energy transfer *** broadband NIR emission peaked at 775 nm of CLHA:Cr^(3+),Ce^(3+)phosphor shows a bright prospect in nondestructive quality-control analysis systems for food.

关键词： Broadband near-infrared Energy transfer Garnet phosphor Rare earths

异甘草酸镁与复方甘草酸单铵S治疗药物性肝损伤患者的效果

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中国药物滥用防治杂志 2024年第1期30卷 103-106页

作者：刘兰宏周双芹高明贵李同玉兴化市第三人民医院消化内科江苏兴化225700 兴化市第三人民医院大内科江苏兴化225700

目的:探讨异甘草酸镁与复方甘草酸单铵S用于药物性肝损伤患者治疗的临床疗效和安全性。方法:选取2018年6月—2021年6月我院收治的药物性肝损伤患者86例,根据患者就医先后顺序编号(1~86号),其中1~43号予以异甘草酸镁治疗设为异甘草酸镁组... 详细信息

目的:探讨异甘草酸镁与复方甘草酸单铵S用于药物性肝损伤患者治疗的临床疗效和安全性。方法:选取2018年6月—2021年6月我院收治的药物性肝损伤患者86例,根据患者就医先后顺序编号(1~86号),其中1~43号予以异甘草酸镁治疗设为异甘草酸镁组,44~86号予以复方甘草酸单铵S治疗设为复方甘草酸单铵S组。比较两组肝功能指标、氧化应激指标、临床疗效及药物不良反应。结果:两组治疗总有效率比较,差异无统计学意义(P>0.05);而异甘草酸镁组显效率为76.74%,高于复方甘草酸单铵S组的55.81%(P0.05)。结论:异甘草酸镁治疗药物性肝损伤的效果显著,能够有效改善肝功能,减轻机体氧化应激反应,且安全性较高。

关键词：药物性肝损伤异甘草酸镁复方甘草酸单铵S 临床疗效安全性

Performance Assessment of a Novel Polygeneration System Based on the Integration of Waste Plasma Gasification,Tire Pyrolysis,Gas Turbine,Supercritical CO_(2)Cycle and Organic Rankine Cycle

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Journal of Thermal Science 2023年第6期32卷 2196-2214页

作者： FENG Fuyuan LI tongyu AN Jizhen CHEN Heng WANG Yi’nan XU Gang ZHAO Qinxin liu Tong Beijing Key Laboratory of Emission Surveillance and Control for Thermal Power Generation North China Electric Power UniversityBeijing102206China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management Institute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou510650China Key Laboratory of Thermo-Fluid Science and Engineering of MOE Xi’an Jiaotong UniversityXi’an710049China

In this paper,a novel polygeneration system involving plasma gasifier,pyrolysis reactor,gas turbine(GT),supercritical CO_(2)(S-CO_(2))cycle,and organic Rankine cycle(ORC)has been *** the proposed scheme,the syngas is obtained by the gasification and the pyrolysis is first burned and drives the gas turbine for power generation,and then the resulting hot exhaust gas is applied to heat the working fluid for the supercritical CO_(2)cycle and the working fluid for the bottom organic Rankine *** addition to the electrical output,the pyrolysis subsystem also produces pyrolysis oil and ***,energy recovery is achieved while treating waste in a non-hazardous *** performance of the new scheme was examined by numerous methods,containing energy analysis,exergy analysis,and economic *** is found that the net total energy output of the polygeneration system could attain 19.89 MW with a net total energy efficiency of 52.77%,and the total exergy efficiency of 50.14%.Besides,the dynamic payback period for the restoration of the proposed project is only 3.31 years,and the relative net present value of 77552640 USD can be achieved during its 20-year lifetime.

关键词： polygeneration system waste plasma gasification tire pyrolysis gas turbine cycle supercritical CO_(2)cycle organic Rankine cycle

Blue-emitting Sr_(1-x)Ca_(x)Lu_(2)O_(4):Ce^(3+) phosphors for high CRI white LEDs

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Journal of Rare Earths 2021年第6期39卷 627-633,I0001页

作者： Yipeng Zhou Yunsheng Hu Ronghui liu Yuanhong liu Weidong Zhuang Min Cao tongyu Gao Junhang Tian Yanfeng Li Guantong Chen National Engineering Research Center for Rare Earth Materials GRINM Group Co.Ltd.Beijing100088China CRIREM Advanced Materials Co. Ltd.Beijing 100088China General Research Institute for Nonferrous Metals Beijing 100088China

A broadband blue-emitting Sr_(1-x)Ca_(x)Lu_(2)O_(4):Ce^(3+)(x=0-0.2) phospho rs were synthesized,which can be used for near-UV pumped white light-emitting diodes(w-LEDs).The crystal structures,photoluminescence pro perties,external quantum efficiency,the rmal stability and application perfo rmance of Sr_(1-x)Ca_(x)Lu_(2)O_(4):Ce^(3+),by partially substituting Sr^(2+) with Ca^(2+)(x=0-0.2),were studied by various analytical *** the Ca/Sr ratio of Sr_(1-x)Ca_(x)Lu_(2)O_(4):Ce^(3+) gradually increases,the emission peak of Sr_(1-x)Ca_(x)Lu_(2)O_(4):Ce^(3+) red-shiftes from 459 to 465 nm,corrected external quantum efficiency increases from 31.8% to 42.9%,and the thermal stability is also *** mechanism of the changes of the photoluminescence emission and excitation spectra,external quantum efficiency and thermal stability properties was also investigated in *** addition,a w-LED was fabricated by using SrLu_(2)O_(4):Ce^(3+)(blue),β-sialon:Eu^(2+)(green) and(Sr,Ca)AlSiN_(3):Eu^(2+)(red) phosphors combined with a 405 nm near-UV LED chip,and its color rendering index(CRI) reaches *** Sr_(0.8)Ca_(0.2)Lu_(2)O_(4):Ce^(3+) is applied as blue phosphor to substitute SrLu_(2)O_(4):Ce^(3+),the obtained w-LED devices have high luminous efficiency,and CRI greater than *** re sults show that the Sr_(1-x)Ca_(x)Lu_(2)O_(4):Ce^(3+) can be potential blue phosphors for n-UV pumped high CRI w-LEDs application.

关键词： n-UV pumped w-LED Blue phosphor Red shift Excellent thermal stability High color rendering index Rare earths