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中国稻米 2015年第5期21卷 75-78页

作者：何张伟大理州农科院粮作所云南大理671005

对不同海拔条件下高海拔粳稻的产量构成因素进行了比较分析。结果显示,在不同海拔条件下高海拔粳稻产量构成因素的表型及与产量的相关性和通径系数均存在较大差异。在产量构成因素中,结实率(132.39%)、有效穗数(113.78%)对海拔的反应最... 详细信息

对不同海拔条件下高海拔粳稻的产量构成因素进行了比较分析。结果显示,在不同海拔条件下高海拔粳稻产量构成因素的表型及与产量的相关性和通径系数均存在较大差异。在产量构成因素中,结实率(132.39%)、有效穗数(113.78%)对海拔的反应最为敏感,千粒重次之(106.78%),而每穗总粒数(102.29%)则较稳定。造成高海拔粳稻产量下降的主要原因是结实率和有效穗数的下降。因此,可通过选择有效穗数和结实率对海拔反应较为迟钝的品种类型来提高高海拔粳稻的稳产性。

关键词：高海拔粳稻产量构成差异分析

Species profile and reactivity of volatile organic compounds emission in solvent uses,industry activities and from vehicular tunnels

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Journal of Environmental Sciences 2024年第1期135卷 546-559页

作者： Haimei Huang zhangwei Wang Chunhao Dai Hai Wu Jia Guo Chunjie Wang Xiaoshan Zhang State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Hunan Agricultural University Changsha 430106China National Institute of Metrology Beijing 100029China

A survey was conducted of the volatile organic compounds(VOCs)released from sources of solvent use,industry activities and vehicle emissions in Guiyang,a capital city of *** were collected by canisters and analyzed by *** species profiles of VOCs emitted from sources were *** showed that xylenes,ethylbenzene,acetone and dichloromethane were the characteristics species for painting,2-propanol and ethyl acetate for printing,α-pinene for solid wood furniture manufacturing,and 2-butanone for biscuit *** characteristics species could be as tracers for the sources *** most of samples from the solvent use,the benzene/toluene(B/T)ratio was less than 0.3,indicating that the ratio could be as the indicator for tracing the solvent use related *** results also suggested that the toluene/xylene(T/X)ratio be as the indicator to distinguish the VOCs sources of painting(he printing(>2).Aromatics contributed the most to ozone formation potential(OFP)of most painting and non-paper printing sources,and oxygen-containing VOCs(OVOCs)were major species contributing to OFP of the sources from food production and paper *** OFP of the VOCs emissions from vehicle in tunnels and from other manufactures were dominated by both aromatics and ***α-pinene could explain 56.94%and 32.54%of total OFP of the VOCs sources from filing cabinet and solid wood furniture manufacturing,which was rarely been involved in previous studies of VOCs source profiles,indicating that the species of concern for VOCs sources are still insufficient at present.

关键词： Volatile organic compounds(VOCs) Species profile BTEX ratio Source reactivity

Thermal Stability and Strengthening Effect of Coherent Precipitates in a (FeCoNi)_(92)Al_(2.5)Ti_(5.5) High Entropy Alloy

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Acta Metallurgica Sinica(English Letters) 2024年第9期37卷 1491-1500页

作者： Yuqi Liu Feng Wang Songyang Chen Hui Wang Zhiping Xiong Khurram Yaqoob zhangwei Wang Min Song tate Key Laboratory of Powder Metallurgy Central South UniversityChangsha410083China State Key Laboratory for Advance Metals and Materials University of Science and Technology BeijingBeijing100083China National Key Laboratory of Science and Technology on Materials Under Shock and Impact Beijing100081China School of Chemical and Materials Engineering National University of Sciences and TechnologyH-12Islamabad44000Pakistan

The coarsening behavior and strengthening effect of L1_(2)-Ni_(3)(Ti,Al)precipitates in a face-centered-cubic(FCC)(FeCoNi)_(92)Al_(2.5)Ti_(5.5) high entropy alloy have been systematically *** coherent L1_(2) precipitates,uniformly distributed throughout the FCC matrix,consistently retain a spherical *** coarsening rate coefficient of precipitate is determined by employing the Philippe-Voorhees(PV)model,suggesting excellent thermal ***,the elemental partitioning and compositional evolution of the L1_(2) precipitates is analyzed by atom probe tomography,which identify aluminum(Al)as the slowest diffusion species during the coarsening *** addition,the precipitation strengthening effect is quantified to ascertain the optimal size of the *** study enhances the understanding of precipitate coarsening in high entropy alloys,presenting valuable insights into their thermal stability and mechanical properties.

关键词： High entropy alloy L1_(2)precipitates Coarsening kinetics Precipitation hardening

实现“人机共存”的上层空间紫外辐照系统的应用及研究进展

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中国医疗设备 2024年第2期39卷 22-27页

作者：季耀洲何张卫叶新建罗美林曹承福袁文涵朱凤一俞容文宋承华吴荣谦李虞锋国科温州研究院浙江温州325001 西安交通大学第一附属医院陕西省再生医学与外科工程研究中心陕西西安710061 西安交通大学第一附属医院精准外科与再生医学国家地方联合工程研究中心陕西西安710061 陕西省信息光子重点实验室陕西西安710049

目前预防空气中病原体传播的重要性日益凸显,寻求有效的空气消杀技术变得至关重要。上层空间紫外辐照技术作为一种高效、经济且满足“人机共存”的空气消杀解决方案,已应用于针对预防结核传播中。随着固态紫外光源的发展,新型上层空间... 详细信息

目前预防空气中病原体传播的重要性日益凸显,寻求有效的空气消杀技术变得至关重要。上层空间紫外辐照技术作为一种高效、经济且满足“人机共存”的空气消杀解决方案,已应用于针对预防结核传播中。随着固态紫外光源的发展,新型上层空间紫外辐照系统相较于传统系统,在光源升级、光束整形、结构设计等方面均有提升。光束整形的优化可使紫外线更精准地照射目标区域,提高消毒效果。本文综述了上层紫外线辐照系统的技术原理、研发现状、应用领域,并对未来发展趋势进行了展望。

关键词：上层空间紫外辐照 C波段紫外线人机共存空气消杀

Variational Mode Decomposition-Informed Empirical Wavelet Transform for Electric Vibrator Noise Analysis

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Journal of Applied Mathematics and Physics 2024年第6期12卷 2320-2332页

作者： Zhenyu Xu zhangwei Chen State Key Lab of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou China

Electric vibrators find wide applications in reliability testing, waveform generation, and vibration simulation, making their noise characteristics a topic of significant interest. While Variational Mode Decomposition (VMD) and Empirical Wavelet Transform (EWT) offer valuable support for studying signal components, they also present certain limitations. This article integrates the strengths of both methods and proposes an enhanced approach that integrates VMD into the frequency band division principle of EWT. Initially, the method decomposes the signal using VMD, determining the mode count based on residuals, and subsequently employs EWT decomposition based on this information. This addresses mode aliasing issues in the original method while capitalizing on VMD’s adaptability. Feasibility was confirmed through simulation signals and ultimately applied to noise signals from vibrators. Experimental results demonstrate that the improved method not only resolves EWT frequency band division challenges but also effectively decomposes signal components compared to the VMD method.

关键词： Electric Vibrator Noise Analysis Signal Decomposing Variational Mode Decomposition Empirical Wavelet Transform

Crosslinkable and chelatable organic ligand enables interfaces and grains collaborative passivation for efficient and stable perovskite solar cells

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Crosslinkable and chelatable organic ligand enables interfac...

第九届新型太阳能材料科学与技术学术研讨会

作者： Zongwen Ma Huaizhi Gao Zhiyang Xu Ruyue Wang zhangwei he Guangzheng Wu Mengyun Zheng Zhanao Tan Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology

Organic-inorganic halide perovskite solar cell(PerSC) stands for the state-of-the-art emerging photovoltaic technologies. However, the environmental water/moisture and temperature induced intrinsic degradation and phase transition of perovskite greatly retard the commercialization process. herein, a dual-functional organic ligand, 4,7-bis((4-vinylbenzyl)oxy)-1,10-phenanthroline(namely, C1), with the crosslinkable styrene sidechains and chelatable phenanthroline backbone, synthesized via a cost-effective Williamson reaction, is introduced for collaborative electrode interface and perovskite grain boundaries(GBs) engineering. C1 can chemically chelate with Sn in SnO electron transport layer and Pb in perovskite layer via coordination bonds, suppressing nonradiative recombination caused by traps/defects existing at the interface and GBs. Meanwhile, C1 enables in-situ crosslinking via thermal-initiated polymerization to form a hydrophobic and stable polymer network, freezing perovskite morphology and resisting moisture degradation. Consequently, through collaborative interface-grain engineering, the resulting PerSCs demonstrate high power conversion efficiency(PCE) of 24.31% with excellent water/moisture and thermal stability.

关键词： chemical anchoring in-situ crosslinking collaborative interface-grain engineering perovskite solar cell stability

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电力设备状态监测数据融合算法分析

能源与环保 2022年第5期44卷 162-167页

作者：何章玮广东电网公司广东广州516000

为了防止电力系统发生故障,需要大量的传感器来监测电力设备的工作状态。使用线路电缆传输监测数据通常会对传统的线路监测系统造成安装、检查、维护的不便。Leach-E是目前最流行的基于自适应簇的路由算法之一。提出了一种基于Leach-E、... 详细信息

为了防止电力系统发生故障,需要大量的传感器来监测电力设备的工作状态。使用线路电缆传输监测数据通常会对传统的线路监测系统造成安装、检查、维护的不便。Leach-E是目前最流行的基于自适应簇的路由算法之一。提出了一种基于Leach-E、WSNs的电力设备监测系统的新设计,其算法充分考虑了无线传感器网络的大能耗,并结合无线传感器网络的优点,将Leach-E架构应用到WSNs,新的设计可以提高在实践中监测电力设备系统健康状况的灵活性、实时性和可靠性。

关键词：电力设备状态监测数据融合 Leach-E

Distal-scanning common path probe for optical coherence tomography

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Journal of Innovative Optical health Sciences 2024年第3期17卷 84-92页

作者： Zhengyu Chen Bin he Zichen Yin zhangwei Hu Yejiong Shi Chengming Wang Xiao Zhang Ning Zhang Linkai Jing Guihuai Wang Ping Xue State Key Laboratory of Low-dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijingChina Frontier Science Center for Quantum Information BeijingChina Jinsp Company Limited BeijingChina Beijing Institute of Technology BeijingChina Institute of Forensic Science Ministry of Public Security BeijingChina Department of Neurosurgery Beijing Tsinghua Changgung HospitalSchool of Clinical Medicine and Institute of Precision MedicineTsinghua UniversityBeijingChina

In this paper,we present a distal-scanning common path probe for optical coherence tomography(OCT)equipped with a hollow ultrasonic motor and a simple and specially designed *** novel probe proves to be able to effectively circumvent polarization and dispersion mismatch caused by fiber motion and is more robust to a variety of interfering factors during the imaging process,experimentally compared to a conventional noncommon path ***,our design counteracts the attenuation of backscattering with depth and the fall-off of the signal,resulting in a more balanced signal range and greater imaging ***-domain OCT imaging of phantom and biological tissue is also demonstrated with a sensitivity of∼100dB and a lateral resolution of∼3μ*** low-cost probe offers simplified system configuration and excellent robustness,and is therefore particularly suitable for clinical diagnosis as one-off medical apparatus.

关键词： Common path optical coherence tomography endoscopic probe

污泥干化芦苇床渗滤液中COD_(Cr)和TP浓度预测模型

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环境科学研究 2016年第8期29卷 1224-1229页

作者：崔玉波孙红杰张万筠贺张伟大连民族大学环境与资源学院辽宁大连116600 哈尔滨工业大学市政环境工程学院黑龙江哈尔滨150001

为便于水质管理,在大连开发区污水处理厂设立了1个传统污泥干化床和2个污泥干化芦苇床,根据系统出水ρ（COD_（Cr））和ρ（TP）检测数据的平稳系列特点,采用ARIMA时间序列分析模型对出水ρ（COD_（Cr））和ρ（TP）进行模拟和预测.结... 详细信息

为便于水质管理,在大连开发区污水处理厂设立了1个传统污泥干化床和2个污泥干化芦苇床,根据系统出水ρ（COD_（Cr））和ρ（TP）检测数据的平稳系列特点,采用ARIMA时间序列分析模型对出水ρ（COD_（Cr））和ρ（TP）进行模拟和预测.结果表明：ARIMA（1,0,0）模型可较好地模拟和预测出水ρ（COD_（Cr））的变化,R2达0.577以上,预测相对误差在-10%-19%之间,实测值和预测值之比处于0.8-1.2之间;ARIMA（6,0,0）模型能较好地模拟和预测污泥处理湿地渗滤液出水ρ（TP）的变化,R2在0.487以上,预测相对误差在-4%-16%之间,实测值和预测值之比处于0.8-1.2之间.研究显示,所构建的ARIMA模型可用于污泥处理湿地系统运行过程中渗滤液出水ρ（COD_（Cr））和ρ（TP）的预测.

关键词： ARIMA模型 CODCr 污泥处理湿地 TP