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Construction Safety Management of Mechanical and Electrical Installation Projects

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Journal of Architectural Research and Development 2024年第2期8卷 50-54页

作者： honglou Chi Shandong Taishan Geological Exploration Group Co. Ltd.Jinan 250100Shandong ProvinceChina

Various industries today rely on the support of electromechanical equipment,expanding its scope of application and leading to an increase in electromechanical installation ***,due to the high level of expertise required and the potential risks involved,it is crucial to emphasize safety management during *** paper delves into the significance of construction safety management for electromechanical installation projects,identifies common problems encountered during construction,and proposes *** analysis aims to provide relevant personnel with essential guidance and references for managing electromechanical installation projects safely.

关键词： Construction safety Mechanical and electrical installation Installation engineering Engineering projects Safety management

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尾矿渣代砂对水泥砂浆的影响

科技创新与应用 2022年第7期12卷 35-37页

作者：李喜喜杨传馨郑洪楼刘凤玲张伦馨薛玉鑫崔玉理临沂大学土木工程与建筑学院山东临沂276005

文章研究不同粒径的砂子和掺入尾矿渣对水泥砂浆强度的影响以及掺入不同比例的矿渣对水泥砂浆的和易性与强度的影响。研究表明,尾矿渣配置的水泥砂浆的强度要高于纯水泥砂浆强度;随着尾矿渣代砂率的增加,相同水灰比条件下,水泥砂浆的流... 详细信息

文章研究不同粒径的砂子和掺入尾矿渣对水泥砂浆强度的影响以及掺入不同比例的矿渣对水泥砂浆的和易性与强度的影响。研究表明,尾矿渣配置的水泥砂浆的强度要高于纯水泥砂浆强度;随着尾矿渣代砂率的增加,相同水灰比条件下,水泥砂浆的流动性逐渐降低;随着尾矿渣掺量的增大,3 d、7 d的抗折、抗压强度减小,28 d的抗折强度变化幅度不大。但在28 d的抗压强度下,随尾矿渣掺量的增大呈先降低后升高的变化趋势。

关键词：尾矿渣抗折抗压强度和易性

基于深度神经网络的7065铝合金厚板应力检测模型

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铁道科学与工程学报 2024年第9期21卷 3787-3796页

作者：杨小平武修瑞郑许任月路朱玉涛何克准卢祥丰莫红楼桂林理工大学物理与电子信息工程学院广西桂林541004 桂林理工大学计算机科学与工程学院广西桂林541004 桂林理工大学广西嵌入式技术与智能系统重点实验室广西桂林541004 广西南南铝加工有限公司广西南宁530031 广西铝合金材料与加工重点实验室广西南宁530031

针对工业生产中传统超声应力检测法对铝合金厚板在不同拉伸率和不同温度条件下存在的测量误差的问题,以7065铝合金厚板为实验对象,提出一种在不同拉伸率和不同温度条件下的基于树突神经网络的应力预测模型与传统超声检测法融合的应力检... 详细信息

针对工业生产中传统超声应力检测法对铝合金厚板在不同拉伸率和不同温度条件下存在的测量误差的问题,以7065铝合金厚板为实验对象,提出一种在不同拉伸率和不同温度条件下的基于树突神经网络的应力预测模型与传统超声检测法融合的应力检测模型,然后使用改进的GSA-GRNN对该应力检测模型进行温度补偿。以南南铝公司生产的7065铝合金厚板为研究对象,使用恒温槽为超声检测提供恒温环境,分别对不同拉伸率、不同温度下的7065铝合金厚板进行超声检测,将声时差、拉伸率作为输入参数,应力作为输出参数,创建一个基于树突神经网络的应力检测模型,然后将应力检测模型的输出作为输入,使用改进的GSA-GRNN建立温度补偿模型对应力检测模型进行温度补偿。研究结果表明:融合了传统超声声时差的检测模型均方根误差为0.84636,相关系数为0.99743,和其他神经网络模型对比,该模型拥有更好的精度;在对该模型进行温度补偿后,模型的应力均方根误差和相关系数分别可以达到0.78848和0.99844,模型的精度得到了进一步的提升。证明基于数据驱动的神经网络融合传统超声检测可以有效降低检测误差,同时省去传统检测方法人工计算应力的时间,提高了检测效率。研究结果可以为基于数据驱动的应力检测模型提供进一步的优化参考。

关键词：应力检测树突神经网络粒子群算法万有引力搜索算法声时差

σ-LET curve obtained with heavy ions accelerated by HIRFL

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Chinese Science Bulletin 2002年第17期47卷 1431-1433页

作者： Qingxiang Zhang Mingdong Hou Jie Liu honglou Zhen Institute of Modern Physics Chinese Academy of Sciences Lanzhou China

σ-LET curve is one of the important factors for orbital SEU rate prediction. SEU cross sections of static random access memory (SRAM) IDT71256 were obtained with 35 MeV/u 36Ar ions and 15.14 MeV/u 136Xe ions, accelerated by Heavy Ion Research Facility in Lanzhou (HIRFL), fitted with Weibull and Lognormal function to obtain the whole σ-LET curve. The SEU rates of IDT71256 in geosynchronous and two sunsynchronous orbits were predicted with fitting parameters.

关键词： static random access memory single event upset σ-LET curve Weibull distribution Lognormal distribution.

Study on the p-type QWIP-LED device

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Science China(Physics,Mechanics & Astronomy) 2006年第4期49卷 401-410页

作者： ZHEN honglou XIONG Dayuan ZHOU Xuchang LI Ning SHAO Jun LU Wei National Laboratory for Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China

A p-type quantum well infrared photodetector(QWIP)integrated with a light-emitting diode(LED)(named QWIP-LED)was fabricated and *** infrared photo-response spectrum was obtained from the device resistance variation and the near-infrared photo-emission intensity variation.A good agreement between these two spectra was observed,which demonstrates that the long-wavelength infrared radiation around 7.5μm has been transferred to the near-infrared light at 0.8μm by the photo-electronic process in the QWIP-LED ***,the experimentally observed infrared response wavelength is in good agreement with the theoretical calculation value of 7.7μ*** results on the upconversion of the infrared radiation will be very useful for the new infrared focal plane array technology.

关键词： p-type QWIP-LED upconversion device photo-response spectrum light-emitting spectrum frequency response.

The theory and experiment of very-long-wavelength 256×1 GaAs/Al_(x)Ga_(1-x)As quantum well infrared detector linear arrays

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Science China(Physics,Mechanics & Astronomy) 2008年第7期51卷 805-812页

作者： GUO FangMin LI Ning XIONG DaYuan ZHEN honglou XU XiangYan HOU Ying DING RuiJun LU Wei HUANG Qi ZHOU JunMing National Laboratory for Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Institute of Physics Chinese Academy of SciencesBeijing 100080China

The 256×1 linear array of multiple quantum wells infrared photodetector (QWIP) is designed and fabricated for the peak response wavelength at λP=14.6 μm. The response spectral width is bigger than 2.2 μm. The two-dimensional (2D) diffractive coupling grating has been formed on the top QWIP photosensitive pixel for coupling the infrared radiation to the infrared detective layers. The performance of the device at VB=3 V and T=45 K has the responsibility 4.28×10-2 (A/W), the blackbody detectivity Db*=5.14×109 (cm·Hz1/2/W), and the peak detectivity Dλ*=4.24× 1010 (cm·Hz1/2/W). The sensor pixels are connected with CMOS read out circuit (ROC) hybridization by indium bumps. When integral time is 100 μs, the linear array has the effective pixel of QWIP FPA Nef of 99.2%, the average responsibility  (V/W) of 3.48×106 (V/W), the average peak detectivity Dλ* of 8.29×109 (cm·Hz1/2/W), and the non-uniformity UR of 5.83%. This device is ready for the thermal image application.

关键词： quantum well focal plane arrays very long wavelength infrared detector diffraction grating

Strain effect on intersubband transitions in rolled-up quantum well infrared photodetectors

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Journal of Semiconductors 2017年第5期38卷 73-77页

作者： Han Wang Shilong Li honglou Zhen Xiaofei Nie Gaoshan Huang Yongfeng Mei Wei Lu National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China University of Chinese Academy of Sciences Beijing 100049 China Department of Materials Science Fudan University Shanghai 200433 China

Pre-strained nanomembranes with four embedded quantum wells（QWs） are rolled up into threedimensional（3D） tubular QW infrared photodetectors（QWIPs）,which are based on the QW intersubband transition（ISBT）.A redshift of ～0.42 meV in photocurrent response spectra is observed and attributed to two strain contributions due to the rolling of the pre-strained *** is the overall strain that mainly leads to a redshift of ～0.5 meV,and the other is the strain gradient which results in a very tiny *** blue shift of the photocurrent response spectra with the external bias are also observed as quantum-confined Stark effect（QCSE）in the ISBT.

关键词： quantum well infrared photodetector rolled-up microtube strain Stark effect

Optimal design of resonant enhanced quantum dot photodetector based on metal-insulator-metal microcavity

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Optimal design of resonant enhanced quantum dot photodetecto...

桉木屑在离子液体[C_4H_8SO_3 Hmim]HSO_4催化下液化行为研究

国防光电子论坛第二届新型探测技术及其应用研讨会

作者： Han Wang Youliang Jing Mengyao Li honglou Zhen State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences

The design of quantum dot infrared photodetector(QDIP) based on mater-insulator-meter(MIM) microcavity in which the quantum dot(QD) is sandwiched between a planar metallic film and a metallic stripe is reported. By a finite difference time-domain method, the light coupling efficiency spectra and enhancement fator are numerically calculated. The results exhibit that the total electric field concentrated in metal-metal region is strongly enhanced when the resonant frequency of microcavity is equal to the QD’s peak response frequency. This enhancement effect mainly origines from the resonant coupling of incident photons into microcavity forming the surface plasmon mode. The optimization of structural parameters for MIM microcavity is discussed, which demonstrates an optimal structure of quantum dot infrared photodetector with the coupling efficiency improved nearly 7 times compared with conventional mesa QDIPs. So, it is deduced that a favorable performance of device such as high quantum efficiency and infared responsivity is possible. Finally, the detector shows the potential application in the infrared sensing and imaging, as well as integrating with other electronic and optoelectronic device for the sub-wavelength size.

关键词： Quantum Dot Infrared Photodetector Metal-insulator-metal Microcavity Resonant Enhancement Surface Plasmon Coupling Efficiency

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林产化学与工业 2017年第2期37卷 42-48页

作者：吴鸿楼谌凡更王静华南理工大学制浆造纸工程国家重点实验室广东广州510640 华南理工大学亚热带建筑科学国家重点实验室广东广州510640

以乙二醇为溶剂,在1-磺酸丁基-3-甲基咪唑硫酸氢盐([C_4H_8SO_3 Hmim]HSO_4)酸性离子液体催化下,进行桉木屑的液化反应。考察了反应温度、反应时间、催化剂用量对液化率以及产物分布的影响,并对液化产物进行了表征。结果表明:在最优液... 详细信息

以乙二醇为溶剂,在1-磺酸丁基-3-甲基咪唑硫酸氢盐([C_4H_8SO_3 Hmim]HSO_4)酸性离子液体催化下,进行桉木屑的液化反应。考察了反应温度、反应时间、催化剂用量对液化率以及产物分布的影响,并对液化产物进行了表征。结果表明:在最优液化条件10 g桉木屑,60 g乙二醇,[C_4H_8SO_3 Hmim]HSO_4用量为10 mmol,液化温度为160℃,液化时间150 min下,桉木屑的液化率最高可达96.41%。在离子液体催化下,桉木屑中的半纤维素和木质素快速液化;液化残渣的主要成分为未降解的结晶区纤维素(结晶度75%左右),液化产物水不溶性级分主要为木质素的降解产物,液化产物水溶性级分主要由纤维素的降解产物乙酰丙酸以及乙酰丙酸甲酯组成。

关键词：离子液体桉木屑液化残渣可溶物