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珠峰高程测量峰顶重力测量仪的选型及改进

地质装备 2024年第3期25卷 18-25页

作者：何志堂秦佩任秀波王斌康胜军黄海潮薛振海自然资源部第一大地测量队西安710054 北京奥地探测仪器有限公司北京100015

主要阐述了珠穆朗玛峰峰顶重力测量重力仪的选型、改进和野外试验。根据珠峰重力测量的环境条件和技术要求制定了仪器选型和参数指标要求,对备选相对重力仪的对应指标参数进行分析,决定采用Z2020相对重力仪。针对Z2020相对重力仪的具体... 详细信息

主要阐述了珠穆朗玛峰峰顶重力测量重力仪的选型、改进和野外试验。根据珠峰重力测量的环境条件和技术要求制定了仪器选型和参数指标要求,对备选相对重力仪的对应指标参数进行分析,决定采用Z2020相对重力仪。针对Z2020相对重力仪的具体参数和硬件实际情况,结合珠峰地区恶劣的自然环境,对其计数器传动系统、光学照明系统、测程调节系统、传动系统进行了改进,并进行了低温测试、野外性能试验。实验结果表明,改进后的Z2020相对重力仪满足峰顶重力测量的技术要求。珠穆朗玛峰峰顶重力测量实施结果表明:改进后的Z2020相对重力仪操作方便,性能稳定,成果可靠,提高了在珠穆朗玛峰峰顶重力测量实际环境中的适应性,确保了任务的技术要求和工程实现。

关键词：珠峰高程测量重力测量相对重力仪

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AROMATIC AND heTEROCYCLIC DINITRILES AND TheIR POLYMERS ⅩⅢ. POLYMERIZATION KINETICS OF BENZONITRILE AND The STRUCTURE OF PRODUCTS

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Chinese Journal of Polymer Science 1988年第3期6卷 251-256页

作者：何晓华黄志镗王葆仁 Institute of Chemistry Academia Sinica Beijing

The polymerization kinetics of benzonitrile were studied, and the formation rate constants of s-triazine structure and linear polymer were determined. The influence of polymerization temperature and the amount of zinc chloride as catalyst on the ratio of linear to cyclic structure were also investigated, and the obtained results were discussed.

关键词： AROMATIC AND heTEROCYCLIC DINITRILES AND TheIR POLYMERS POLYMERIZATION KINETICS OF BENZONITRILE AND The STRUCTURE OF PRODUCTS rate

Machine learning aided investigation on the structure-performance correlation of MOF for membrane-based he/H2 separation

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Green Chemical Engineering 2024年第4期5卷 526-532页

作者： Shitong Zhang Yanjing he Zhengqing Zhang Chongli Zhong State Key Laboratory of Separation Membranes and Membrane Processes Tiangong University School of Chemical Engineering and Technology Tiangong University School of Textile Science and Engineering Tiangong University

The separation of he/H2using membrane technology has gained significant interest in the field of he extraction from natural gas. One of the greatest challenges associated with this process is the extremely close kinetic diameters of the two gas molecules, resulting in low membrane selectivity. In this study, we investigated the structure-performance relationship of metal-organic framework（MOF） membranes for he/H2separation through molecular simulations and machine learning approaches. By conducting molecular simulations, we identified the potential MOF membranes with high separation performance from the Computation-Ready Experimental（Co RE）MOF database, and the diffusion-dominated mechanism was further elucidated. Moreover, random forest（RF）-based machine learning models were established to identify the crucial factors influencing the he/H2separation performance of MOF membranes. The pore limiting diameter（PLD） and void fraction（φ）, are revealed as the most important physical features for determining the membrane selectivity and he permeability, respectively. Additionally, density functional theory（DFT） calculations were carried out to validate the molecular simulation results and suggested that the electronegative atoms on the pore surfaces can enhance the diffusion-based separation of he/H2, which is critical for improving the membrane selectivities of he/H2. This study offers useful insights for designing and developing novel MOF membranes for the separation of he/H2at the molecular level.

关键词： he/H 2 Membrane separation Molecular simulation Machine learning DFT calculation

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中国南极长城站绝对重力基准的建立

武汉大学学报（信息科学版） 2007年第8期32卷 688-691页

作者：鄂栋臣何志堂王泽民张胜凯武汉大学测绘学院中国南极测绘研究中心陕西测绘局第一大地测量队西安市测绘路4号710054

2004～2005年南极夏季期间，我国第21次南极科学考察队利用FG5绝对重力仪在长城站两个站点（C001和C002）进行了绝对重力测量，精度在±3×10^-8ms^-2以内，并同时进行了重力垂直梯度测量和水平梯度测量；利用2台LCR相对重力仪在韩国站... 详细信息

2004～2005年南极夏季期间，我国第21次南极科学考察队利用FG5绝对重力仪在长城站两个站点（C001和C002）进行了绝对重力测量，精度在±3×10^-8ms^-2以内，并同时进行了重力垂直梯度测量和水平梯度测量；利用2台LCR相对重力仪在韩国站、智利机场（2点）和菲尔德斯半岛地区的山海关、盘龙山、香蕉山、半边山等7个站点进行了高精度相对重力测量，精度达±10×10^-8ms^-2，并进行了相对重力仪比例因子的标定，建立了我国南极长城站地区绝对重力基准。

关键词：绝对重力测量相对重力测量比例因子南极

In-situ TEM study of the effect of hydrogen-helium ratio on defect characteristics in Fe9Cr1.5W0.4Si F/M steel during H_(2)^(+)&he^(+)simultaneous irradiation

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Journal of Materials Science & Technology 2024年第6期173卷 192-201页

作者： Dewang Cui Ziqi Cao Kun he Yuanming Li Xi Qiu Guang Ran College of Energy Xiamen UniversityXiamen 361102China Fujian Provincial Nuclear Energy Engineering Technology Research Center Xiamen 361102China Science and Technology on Reactor Fuel and Materials Laboratory Chengdu 610041China Nuclear Power Institute of China Chengdu 610041China Science and Technology on Reactor System Design Technology Laboratory Chengdu 610041China

The effect of hydrogen and helium interaction,especially H-he ratio,on the irradiation behavior of nuclear materials has not yet been ***,this is an important basis for evaluating the irradiation properties of nuclear materials and developing high irradiation resistant ***,30 keV H_(2)^(+)and he^(+)dual beams with four H-he ratios of 0:10,3:10,15:10,and 30:10 were used to irradiate the newly developed Fe9Cr1.5W0.4Si F/M steel in TEM to in-situ study the interaction and ratio effect of hydrogen and *** addition of H atoms significantly promoted the nucleation of dislocation loops and *** the early stage of irradiation,the average size and density of dislocation loops increased with the increase of H-he ***,the larger the H-he ratio,the easier it was to form a complex dislocation ***,the final saturation size of bubbles increased with the increase of H-he *** was first found that the swelling was affected by H concentrations,with high H concentrations slowing down the increase in *** a certain irradiation dose,a specific H-he ratio would lead to a swelling peak of Fe9Cr1.5W0.4Si F/M *** super-sized bubbles at grain boundaries(GBs)were found after H addition,resulting in a bigger swelling of GBs than the *** the swelling of the GBs and the matrix show a dependence on the H-he *** current work is of great significance for understanding the interaction between hydrogen and helium in nuclear materials.

关键词： Dose ratio effect Ferritic-martensitic steel Hydrogen&helium synergetic irradiation In-situ TEM

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岛礁重力测量潮汐改正新方法

武汉大学学报（信息科学版） 2015年第7期40卷 913-917页

作者：赵珞成罗志才许闯何志堂刘焱雄武汉大学测绘学院湖北武汉430079 武汉大学地球空间环境与大地测量教育部重点实验室湖北武汉430079 武汉大学地球空间信息技术协同创新中心湖北武汉430079 国家测绘地理信息局第一大地测量队陕西西安710054 国家海洋局第一海洋研究所山东青岛266061

现有的固体潮和海洋负荷潮的模型用于岛礁重力测量的改正时,会产生较大的误差。利用短时间的重力观测数据建立测站的潮汐模型,可以明显地改善测站的潮汐模型,提高重力测量结果的精度,该方法可用于绝对和相对重力测量的潮汐改正。重力梯... 详细信息

现有的固体潮和海洋负荷潮的模型用于岛礁重力测量的改正时,会产生较大的误差。利用短时间的重力观测数据建立测站的潮汐模型,可以明显地改善测站的潮汐模型,提高重力测量结果的精度,该方法可用于绝对和相对重力测量的潮汐改正。重力梯度同步观测方案不需要进行潮汐改正就可获得重力梯度,故不受潮汐模型误差的影响。

关键词：岛礁重力测量潮汐改正短时间潮汐模型重力梯度同步测量

Honeycomb-like biochar framework coupled with Fe_(3)O_(4)/FeS nanoparticles as efficient heterogeneous Fenton catalyst for phenol degradation

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Journal of Environmental Sciences 2024年第2期136卷 390-399页

作者： Aihua Cheng Yi he Xiaohe Liu Chi he Department of Environmental Engineering College of Geology and EnvironmentXi’an University of Science and TechnologyXi’an 710054China State Key Laboratory of Multiphase Flow in Power Engineering School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049China National Engineering Laboratory for VOCs Pollution Control Material and Technology University of Chinese Academy of SciencesBeijing 101408China

Achieving an efficient and stable heterogeneous Fenton reaction over a wide pH range is of great significance for wastewater ***,a pollen-derived biochar catalyst with a unique honeycomb-like structure,coupled with the dispersion of magnetic Fe_(3)O_(4)/FeS(Fe/S)nanoparticles,was synthesized by simple impregnation precursor,followed by *** prepared Fe/S-biochar catalyst demonstrated outstanding phenol degradation efficiency across a wide pH range,with 98%of which eliminated even under neutral conditions(pH 7.0).The high catalytic activity was due to the multilevel porous structure of pollenderived biochar provided enough active sites and allowed for better electron transfer,then increases oxidation ability to promote the ***,the acid microenvironment formed by SO_(4)^(2-)group from Fe/S composite extended the pH range for Fenton reaction,and S^(2-)facilitated the conversion of≡Fe^(3+)to≡Fe^(2+),resulting in remarkable degradation ***,biochar can effectively promote cycling stability by limiting Fe *** work may provide a general strategy for designing 3D framework biochar-based Fe/S catalysts with excellent performance for heterogeneous Fenton reactions.

关键词： Biomass Biochar Fenton reaction Fe_(3)O_(4)/FeS(Fe/S) Phenol degradation

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陆态网络绝对重力基准的建立及应用

测绘学报 2016年第5期45卷 538-543页

作者：邢乐林李辉李建国张为民何志堂中国地震局地震研究所地震大地测量重点实验室 61365部队中国科学院测量与地球物理研究所陕西测绘地理信息局

利用陆态网络100个基准站的首期观测数据,建立了基本覆盖我国大陆范围的高精度绝对重力基准,各基准站点值精度均小于5.0μGal/a,为相对重力联测提供了高精度起算基准点,可获得真实的相对重力联测平差结果,避免重复重力观测获得的重力场... 详细信息

利用陆态网络100个基准站的首期观测数据,建立了基本覆盖我国大陆范围的高精度绝对重力基准,各基准站点值精度均小于5.0μGal/a,为相对重力联测提供了高精度起算基准点,可获得真实的相对重力联测平差结果,避免重复重力观测获得的重力场动态变化图出现畸变。成都基准台重复重力观测获得的重力变化规律表明,汶川地震前长期重力变化率达5.01±0.7μGal/a,如此大的震前重力变化很可能是由于地下物质运移引起的。联合绝对重力和GRACE卫星长期测量数据,根据二者系统偏差确定了武汉地区的地壳沉降速率,为-3.27±0.65mm/a。

关键词：重力基准陆态网络绝对重力测量重力变化形变

H-and J-aggregation of conjugated small molecules in organic solar cells

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Journal of Energy Chemistry 2024年第6期93卷 174-192,I0005页

作者： Qiaoqiao Zhao Feng he State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyShandong Academy of SciencesJinan 250353ShangdongChina Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055GuangdongChina

As H-and J-aggregation receive more and more attention in the research of organic solar cells(OSCs),especially in small molecular systems,deep understanding of aggregation behavior is needed to guide the design of conjugated small molecular structure and the fabrication process of OSC *** this end,this review is ***,the review firstly introduced the basic information about H-and J-aggregation of conjugated small molecules in ***,the characteristics of H-and J-aggregation and the methods to identify them were ***,it reviewed the research progress of H-and J-aggregation of conjugated small molecules in OSCs,including the factors influencing H-and J-aggregation in thin film and the effects of H-and J-aggregation on OPV performance.

关键词： H-aggregation J-aggregation Organic solar cells Small molecules Efficiency Stability