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Circular cladding waveguides in Pr:YAG fabricated by femtosecond laser inscription:Raman,luminescence properties and guiding performance

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Opto-Electronic Advances 2021年第2期4卷 12-18页

作者： Quanxin Yang Hongliang Liu Shan He qingyu tian Bin Xu Pengfei Wu Institute of Modern Optics Nankai UniversityTianjin 300350China tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Tianjin 300350China tianjin Key Laboratory of Micro-scale Optical Information Science and Technology Tianjin 300350China Department of Electronic Engineering Xiamen UniversityXiamen 361005China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China

We report on the fabrication of circular cladding waveguides with cross-section diameters of 60−120μm in Pr:YAG crystal by applying femtosecond laser *** fabricated waveguides present 2D guidance on the cross-section and fairly low propagation *** high-order guiding modes are observed in waveguides with different *** simulation results reveal the origin of a specific kind of guiding *** micro-Raman(μ-Raman)experiments demonstrate the modification effects in femtosecond laser affected areas and ascertain the refractive index induced guiding *** addition,luminescence emission properties of Pr3+ions at waveguide volume are well preserved during the femtosecond laser inscription process,which may result in a potential high-power visible waveguide laser.

关键词： femtosecond laser inscription cladding waveguides Pr:YAG crystal luminescence emission

High power and energy generation in a Nd:YAG single-crystal fiber laser at 1834 nm

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Photonics Research 2019年第2期7卷 162-166页

作者： YAQI CAI BIN XU YUNSHAN ZHANG qingyu tian XIAODONG XU QINGSONG SONG DONGZHEN LI JUN XU IVAN BUCHVAROV Department of Electronic Engineering Xiamen University Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronic EngineeringJiangsu Normal University School of Physics Science and Engineering Institute for Advanced StudyTongji University Department of Physics Sofia University

We report on a diode-end-pumped high-power and high-energy Nd:YAG single-crystal fiber laser at 1834 *** 808 nm diodes injecting about 58 W pump power into the Nd:YAG fiber have generated 3.28 W continuouswave and 1.66 W Cr:ZnSe-based passively Q-switched lasers. Slope efficiencies with respect to pump powers are8.7% for the continuous-wave laser and 4.9% for the Q-switched laser. The extracted maximum pulse energy is about 266.9 μJ, and the corresponding maximum pulse peak power is 2.54 kW. These performances greatly surpass previous results regarding this specific laser emission because the laser gain medium in the form of fiber can significantly mitigate thermally induced power saturation thanks to its significantly reduced thermal lensing effect. Single-crystal fiber lasers show great potential for high average power, pulse energy, and peak power.

关键词： High power energy generation

铑(Ⅲ)催化苯甲亚胺酸乙酯和CF_(3)-亚胺氧锍叶立德C-H活化/环化反应合成CF_(3)-1H-苯并[de][1,8]萘吡啶

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有机化学 2024年第1期44卷 291-300页

作者：文思丁宇浩田青于葛进程国林安康学院化学化工学院陕西安康725000 华侨大学材料科学与工程学院厦门市光电材料及其先进制造重点实验室福建厦门361021

在铑催化下,实现了苯甲亚胺酸乙酯类化合物与CF_(3)-亚胺叶立德的C—H活化/环化多米诺反应.该合成策略具有良好的官能团耐受性和底物的普适性,合成了一系列含三氟甲基的1H-苯并[de][1,8]萘吡啶,产率为22%~86%.

关键词：铑催化苯甲胺酸乙酯三氟甲基氧锍叶立德苯并[de]萘吡啶

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春晓气田陆上终端地基处理方案优选

化工建设工程 2003年第1期25卷 41-42页

作者：田庆育陈金巧中国石化胜利油田规划设计研究院山东东营257026

1工程概况春晓气田陆上终端,是目前国内最大的天然气处理厂,分为厂前区、辅助生产区、装车区及生产区.厂前区包括综合办公楼、化验楼、机修间、车库等;辅助生产区包括水处理站、高低压变电所、空压站等;生产区包括设备基础、水池等;罐... 详细信息

1工程概况春晓气田陆上终端,是目前国内最大的天然气处理厂,分为厂前区、辅助生产区、装车区及生产区.厂前区包括综合办公楼、化验楼、机修间、车库等;辅助生产区包括水处理站、高低压变电所、空压站等;生产区包括设备基础、水池等;罐区包括2000m3球罐,5000m3水罐.

关键词：春晓气田陆上终端地基处理方案优选天然气处理厂

夏杞软胶囊对2型糖尿病模型小鼠胰岛素抵抗的影响

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中医学报 2017年第7期32卷 1179-1183页

作者：杨庆宇郜娜田勇郑州人民医院河南郑州450000 郑州大学附属肿瘤医院/河南省肿瘤医院河南郑州450008

目的:研究夏杞软胶囊治疗2型糖尿病的作用和机制。方法:60只雄性2型糖尿病小鼠随机分为模型组,夏杞软胶囊200 mg·(kg·d)^(-1)组、400 mg·(kg·d)^(-1)组,另取20只雄性小鼠作为对照组,模型组及对照组小鼠给予等量生理盐水。给药6周后... 详细信息

目的:研究夏杞软胶囊治疗2型糖尿病的作用和机制。方法:60只雄性2型糖尿病小鼠随机分为模型组,夏杞软胶囊200 mg·(kg·d)^(-1)组、400 mg·(kg·d)^(-1)组,另取20只雄性小鼠作为对照组,模型组及对照组小鼠给予等量生理盐水。给药6周后进行葡萄糖耐量实验;取血检测空腹血糖、三酰甘油、总胆固醇及空腹血胰岛素,行HE染色进行病理学检查,取肝组织进行Western blotting检测Caveolin-1、胰岛素受体β(insulin receptorβ,IRβ)、p IRβ、蛋白激酶(protein kinase,AKT)、p AKT及细胞膜葡萄糖转运体2(glucose transporter 2,GLUT2)水平。结果:与模型组相比,夏杞软胶囊200 mg·(kg·d)^(-1)组、400 mg·(kg·d)^(-1)组空腹血糖、三酰甘油、总胆固醇水平及HOMA-IR指数显著降低,空腹血胰岛素水平显著升高;肝组织Cavealin-1蛋白表达显著降低;肝组织IRβ,AKT磷酸化水平及GLUT2膜转位显著增加。结论:夏杞软胶囊可降低2型糖尿病小鼠血糖血脂水平,降低肝组织Cavealin-1蛋白表达,增加肝组织IRβ、AKT磷酸化水平及GLUT2膜转位,以改善胰岛素抵抗。

关键词：夏杞软胶囊 Caveolin-1 肝脏葡萄糖转运体2 AKT 胰岛素抵抗小鼠

预氧化-MBR-反渗透工艺深度处理印染废水研究

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工业水处理 2017年第5期37卷 79-82页

作者：朱兆亮崔山葛孝新田庆余刘昌明山东建筑大学市政与环境工程学院山东济南250101 中国水环境集团山东青岛266399 高密市孚日自来水有限公司山东潍坊261500

以某工业园区印染废水处理厂二级生化出水为处理对象,采用预氧化+膜生物反应器(MBR)+反渗透(RO)的组合工艺对其进行深度处理,以达到企业回用水要求。实验结果表明,在进水COD为105~120 mg/L,色度为50倍的条件下,当氧化剂用量为3 mg/L,MB... 详细信息

以某工业园区印染废水处理厂二级生化出水为处理对象,采用预氧化+膜生物反应器(MBR)+反渗透(RO)的组合工艺对其进行深度处理,以达到企业回用水要求。实验结果表明,在进水COD为105~120 mg/L,色度为50倍的条件下,当氧化剂用量为3 mg/L,MBR水力停留时间为3~3.5 h时,组合工艺的出水COD≤5 mg/L,色度≤5倍,电导率≤20μS/cm,出水水质满足企业回用水要求,RO浓水COD≤120 mg/L,色度≤50倍,达到排放标准。

关键词：印染废水氧化剂 MBR 反渗透

Research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie tian Qinghe Cui Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

Review of precipitation strengthening in ultrahigh-strength martensitic steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 256-269页

作者： Zhihao tian Chunlei Shang Chaolei Zhang Xiaoye Zhou Honghui Wu Shuize Wang Guilin Wu Junheng Gao Jiaming Zhu Xinping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110004China Department of Materials Science and Engineering Shenzhen MSU-BIT UniversityShenzhen 518172China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China School of Civil Engineering Shandong UniversityJinan 250061China

Martensite is an important microstructure in ultrahigh-strength steels,and enhancing the strength of martensitic steels often involves the introduction of precipitated phases within the martensitic *** considerable research efforts devoted to this area,a systematic summary of these advancements is *** review focuses on the precipitates prevalent in ultrahigh-strength martensitic steel,primarily carbides(e.g.,MC,M_(2)C,and M_(3)C)and intermetallic compounds(e.g.,Ni Al,Ni_(3)X,and Fe_(2)Mo).The precipitation-strengthening effect of these precipitates on ultrahigh-strength martensitic steel is discussed from the aspects of heat treatment processes,microstructure of precipitate-strengthened martensite matrix,and mechanical ***,a perspective on the development of precipitation-strengthened martensitic steel is presented to contribute to the advancement of ultrahigh-strength martensitic *** review highlights significant findings,ongoing challenges,and opportunities in the development of ultrahigh-strength martensitic steel.

关键词： ultrahigh-strength martensitic steel precipitation strengthening mechanical property carbide intermetallic compound

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供电企业低碳贡献效果综合评价研究

水电能源科学 2011年第8期29卷 199-202页

作者：曾鸣张徐东刘清宇田廓刘宏志华北电力大学能源与电力经济研究咨询中心北京102206

基于供电企业在实现电力低碳化发展中的重要作用,以供电企业为研究对象,从发电侧、供电侧及用电侧三方面分析构建了供电企业低碳贡献效果评价指标体系,并运用灰色三角白化权函数建立了综合评价模型。实例应用结果表明,该模型能合理评价... 详细信息

基于供电企业在实现电力低碳化发展中的重要作用,以供电企业为研究对象,从发电侧、供电侧及用电侧三方面分析构建了供电企业低碳贡献效果评价指标体系,并运用灰色三角白化权函数建立了综合评价模型。实例应用结果表明,该模型能合理评价供电企业的低碳贡献效果,为供电企业开展节能减排工作提供了理论依据。

关键词：供电企业低碳贡献效果评价三角白化权函数