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便携式地电阻率观测系统检测装置的研制与应用

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大地测量与地球动力学 2025年第3期45卷 325-330页

作者：道伟陈奇彬周卫东甘肃省地震局兰州市730000 国网阜阳市城郊供电公司安徽省阜阳市236000

针对地震前兆观测中的地电阻率法,研制出适合其观测系统的检测装置,并对装置进行理论仿真与实地检测。首先,通过对地电阻率测量系统进行剖析,指出现有检测系统的不足;然后,根据观测系统需求进行分析,设计对应的检测指标和电路,并将仪器... 详细信息

针对地震前兆观测中的地电阻率法,研制出适合其观测系统的检测装置,并对装置进行理论仿真与实地检测。首先,通过对地电阻率测量系统进行剖析,指出现有检测系统的不足;然后,根据观测系统需求进行分析,设计对应的检测指标和电路,并将仪器检测精度设计至0.001级别,提升设备性能;最后,借助Simulink工具对检测装置进行理论仿真,对比研究干扰对观测结果的影响,并随机选取甘肃地区地震观测台站进行实地检测。结果表明,检测装置不仅能直观展示地电地阻率测量系统的工作状态,而且能精准评价地电阻率观测系统的实时优劣性,填补地电阻率观测系统检测装置的空白,为地震一线工作人员提供极大便利。

关键词：地电阻率测量系统检测装置

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Possible effects of climate change of wind on aerosol variation during winter in Shanghai,China

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Particuology 2015年第3期13卷 80-88页

作者： weidong zhou Xuexi Tie Guangqiang zhou Ping Liang Shanghai Center for Urban Environmental Meteorology Key Laboratory of Aerosol Science and Technology SKLLQGInstitute of Earth EnvironmentChinese Academy of Sciences National Center for Atmospheric Research Shanghai Climate Center

Several data sets were introduced to investigate the possible effects of climate-change-related variation of wind on aerosol concentration during winter in Shanghai, China. These data sets included the daily wind speed, wind direction, visibility, and precipitation from 1956 to 2010, hourly PM10 concentration from 2008 to 2010, and the NCEP/NCAR reanalysis data of global atmospheric circulation from 1956 to 2010. The trend of aerosol concentration and its correlations with wind speed and wind direction in winter were analyzed. Results indicated that there was an increase in the number of haze days in winter of 2.1 days/decade. Aerosol concentration, represented by PMl0 in this study, was highly correlated to both wind speed and direction in winter. The PMl0 concentration increased as wind speed decreased, reaching maximum values under static wind conditions. The PM10 concentration was relatively lower under easterly winds and higher under westerly winds. The analysis showed that weaker East Asia winter monsoons have resulted in a reduction of wind speed, increase in static wind frequency, and decline in the frequency of northerly winds since the 1980s. Moreover, the rapid expansion of urban construction in Shanghai has changed the underlying surface considerably, which has led to a reduction in wind speed. Finally, a wind factor was defined to estimate the combined effects of wind speed and wind direction on aerosol concentrations in Shanghai. The analysis of this factor indicated that changes in atmosphere circulation and urbanization have had important effects on the number of winter haze days in Shanghai.

关键词： AerosolWindClimate changeWinter monsoonShanghai

The calculation of the circulation in South China Sea by a diagnostic model

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Acta Oceanologica Sinica 2008年第z1期27卷 31-45页

作者： zhou weidong YANG Yang DONG Danpeng South China Sea Institute of Oceanology Chinese Academy of Science Guangzhou 510301 China South China Sea Institute of Oceanology Chinese Academy of Science Guangzhou 510301 China South China Sea Institute of Oceanology Chinese Academy of Science Guangzhou 510301 China

A high resolved two-dimensional linear global diagnostic model combining with the dynamical calculation is used to calculate velocity field in the South China Sea(SCS). The study of model results shows that eddy diffusion does not change basic structure of circulation in the SCS and does not change the direction of invasive water, but changes the value of transport considerably especially in straits. The velocity field is not changed whether the wind stress is considered or not. This result shows the circulation is largely determined by a density field which well records most of the important contribution of the wind stress effect. Potential vorticity is calculated to testify the dynamics of the model results. The result shows that a good conservation of the nonlinear PV. This indicates most effects of the important nonlinear processes are well recorded in density and the nonlinear term is negligible so that the simplified model is reliable. The model results show the water exchanges between the SCS and open ocean or surrounding seas. Cold deep water invades through Luzon Strait and Warm shallow water is pushed out mainly through Karimata Straits. The model results also reveal the structure of the circulation in the SCS basin. In two circulations of upper and middle layers, a cyclonic one in the north and an anti-cyclonic one in the south, reflect the climatologic average of the circulation driven by monsoon. In the deep or bottom layer, these two circulations reflect the topography of the basin. Above the middle layer, invasive water enters westward in the north but the way of invasion of Kuroshio is not clear. Below the deep layer, a current goes down south near the east basin ,and invasive water enters in the basin from the west Pacific.

关键词： diagnostic model South China Sea potential vorticity circulation

LDA-ID:An LDA-Based Framework for Real-Time Network Intrusion Detection

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China Communications 2023年第12期20卷 166-181页

作者： weidong zhou Shengwei Lei Chunhe Xia Tianbo Wang Key Laboratory of Beijing Network Technology Beihang UniversityBeijing 100191China School of Cyber Science and Technology Beihang UniversityBeijing 100191China

Network intrusion poses a severe threat to the ***,existing intrusion detection models cannot effectively distinguish different intrusions with high-degree feature *** addition,efficient real-time detection is an urgent *** address the two above problems,we propose a Latent Dirichlet Allocation topic model-based framework for real-time network Intrusion Detection(LDA-ID),consisting of static and online *** problem of feature overlap is transformed into static LDA-ID topic number optimization and topic ***,the detection is based on the latent topic *** achieve efficient real-time detection,we design an online computing mode for static LDA-ID,in which a parameter iteration method based on momentum is proposed to balance the contribution of prior knowledge and new ***,we design two matching mechanisms to accommodate the static and online LDA-ID,*** results on the public NSL-KDD and UNSW-NB15 datasets show that our framework gets higher accuracy than the others.

关键词： feature overlap LDA-ID optimal topic number determination real-time intrusion detection

Nanosecond laser preheating effect on ablation morphology and plasma emission in collinear dual-pulse laser-induced breakdown spectroscopy

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Plasma Science and Technology 2022年第11期24卷 145-150页

作者： Na LI Edward HAREFA weidong zhou Key Laboratory of Optical Information Detection and Display Technology of Zhejiang Zhejiang Normal UniversityJinhua 321004People’s Republic of China

Focus-offset collinear dual-pulse laser-induced breakdown spectroscopy is designed and used to investigate the laser ablation and spectral intensity with an aluminum alloy *** laser crater morphologies and ablation volumes were *** inter-pulse time delay dependent ablation efficiency on a nanosecond laser-heated sample was observed,which was similar to the trend of spectral intensity versus inter-pulse time delay in the delay time less than 3μ*** on the observation,the nanosecond pulse laser preheating effect on subsequent second laser ablation and signal enhancement is discussed,which will be helpful for understanding the ablation and signal enhancement mechanism in the standard collinear DP-LIBS technique.

关键词： enhancement mechanism laser ablation crater morphology target preheating

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氢气在认知障碍中的应用研究进展

未来与发展 2025年第2期49卷 18-21,26页

作者：王君周卫东屈正应急总医院北京100028

认知障碍是一类导致记忆力、注意力和逻辑思维能力下降的疾病,主要包括阿尔茨海默病(AD)、轻度认知障碍(MCI)和帕金森病(PD)等。氢气(H2)是一种无色、无味、无毒的气体,氢分子较小,能透过血脑屏障,在体内包括脑内均能起到抗炎和抗氧化... 详细信息

认知障碍是一类导致记忆力、注意力和逻辑思维能力下降的疾病,主要包括阿尔茨海默病(AD)、轻度认知障碍(MCI)和帕金森病(PD)等。氢气(H2)是一种无色、无味、无毒的气体,氢分子较小,能透过血脑屏障,在体内包括脑内均能起到抗炎和抗氧化的作用,其神经保护作用在认知障碍疾病的治疗中显示出潜力。文章综述了氢气在认知障碍疾病应用的相关研究进展,探讨其作用机制及未来的研究方向。

关键词：氢认知障碍阿尔茨海默病帕金森病

Ocean Model Open Boundary Conditions with Volume, Heat and Salinity Conservation Constraints

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Advances in Atmospheric Sciences 2014年第1期31卷 188-196页

作者： WANG Qiang zhou weidong WANG Dongxiao DONG Danpeng State Key Laboratory of Tropical Oceanography South China Sea Institute of Oceanology Chinese Academy of Sciences University of Chinese Academy of Sciences

Open boundary conditions （OBCs） for a regional ocean model that can be integrated stably over a long timeframe, as well as satisfy the volume, heat and salinity conservation constraints, were developed. First, the idea that the inward and outward flux information can be treated separately in the OBCs was adopted. Second, in order to maintain the property that the volume, heat and salinity remains conserved in the simulation domain, conservation constraints were added to the OBCs, and an inverse method utilized to solve the constraint equations. Ideal experiments were designed to investigate the conservation property, and the OBCs were found to work efficiently to maintain the volume, heat and salinity conservation. It was found that simulations were comparable to observations when the OBCs were applied to a regional ocean model.

关键词： open boundary conditions modeling inverse method ocean circulation

二术二陈汤联合穴位贴敷治疗AECOPD临床观察

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光明中医 2025年第2期40卷 327-329页

作者：周卫东廖庆峰章志俊新余市人民医院中西医结合科江西新余338000

目的观察二术二陈汤联合穴位贴敷治疗慢性阻塞性肺疾病急性加重期(AECOPD)的疗效。方法将2023年1月—2024年1月新余市人民医院收治的62例AECOPD患者随机分为对照组(31例)和试验组(31例)。对照组使用常规西医治疗,试验组在对照组基础上... 详细信息

目的观察二术二陈汤联合穴位贴敷治疗慢性阻塞性肺疾病急性加重期(AECOPD)的疗效。方法将2023年1月—2024年1月新余市人民医院收治的62例AECOPD患者随机分为对照组(31例)和试验组(31例)。对照组使用常规西医治疗,试验组在对照组基础上口服二术二陈汤联合穴位贴敷治疗,检测2组患者肺功能、呼吸困难指数量表(mMRC)评分、6 min步行的距离、中医证候积分,记录治疗期间不良反应发生情况。结果与对照组相比,试验组治疗后FEV1%pred、FEV1/FVC、6 min步行距离明显升高(P<0.05);咳嗽、咳痰量、纳呆、口干、气短证候积分,不良反应发生率及mMRC评分明显降低(P<0.05)。结论二术二陈汤联合穴位贴敷能显著改善AECOPD患者肺功能,提高患者生活质量和运动能力,改善咳嗽、咳痰量、纳呆、口干、气短等证候,减少胃肠道不良反应。

关键词：肺胀慢性阻塞性肺疾病二术二陈汤穴位贴敷疗法中医药疗法

底板梳状定向长钻孔技术在淮南矿区瓦斯区域治理应用研究

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陕西煤炭 2025年第1期44卷 119-123,151页

作者：张磊方有向周伟东景慎怀淮南矿业(集团)有限责任公司安徽淮南232001

针对安徽淮南矿区煤巷条带瓦斯区域治理时穿层钻孔量大、施工周期长,以及顺层钻孔一次性成孔难度大、孔内事故频发等难题,提出在张集煤矿采用底板梳状定向长钻孔预抽煤巷条带瓦斯的技术方案。在施工中总结了入煤角度控制、硬岩开分支、... 详细信息

针对安徽淮南矿区煤巷条带瓦斯区域治理时穿层钻孔量大、施工周期长,以及顺层钻孔一次性成孔难度大、孔内事故频发等难题,提出在张集煤矿采用底板梳状定向长钻孔预抽煤巷条带瓦斯的技术方案。在施工中总结了入煤角度控制、硬岩开分支、飞管护孔等关键技术,形成了一套完善的梳状孔施工工艺,保证了钻孔主孔成孔深度和分支孔见煤率。试验期间,施工钻孔主孔深度均大于400 m,分支孔接力掩护长度均大于300 m。钻孔成孔明显得到改善,干管瓦斯抽采浓度达到60%以上,抽采纯量达到3.5 m^(3)/min,同时节省了施工成本,为淮南矿区的瓦斯区域治理提供了新的方案。

关键词：区域治理梳状定向长钻孔煤巷条带瓦斯