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中国有色金属学会会刊：英文版 1999年第2期9卷 201-207页

作者： he, jianjun Yu, Shouyi Gui, Weihua Central South Univ of Technology Changsha China

１ＩＮＴＲＯＤＵＣＴＩＯＮＥｘｐｌｏｓｉｖｅｉｓｏｎｅｏｆｔｈｅｔｒｅｍｅｎｄｏｕｓｅｎｅｒｇｙｒｅｓｏｕｒｃｅｓｗｈｉｃｈｐｅｏｐｌｅｏｆｔｅｎｕｔｉｌｉｚｅ．Ｉｔｉｓｎｏｔｏｎｌｙｕｓｅｄｉｎｍｉｌｉｔａｒｙｐ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＥｘｐｌｏｓｉｖｅｉｓｏｎｅｏｆｔｈｅｔｒｅｍｅｎｄｏｕｓｅｎｅｒｇｙｒｅｓｏｕｒｃｅｓｗｈｉｃｈｐｅｏｐｌｅｏｆｔｅｎｕｔｉｌｉｚｅ．Ｉｔｉｓｎｏｔｏｎｌｙｕｓｅｄｉｎｍｉｌｉｔａｒｙｐｕｒｐｏｓｅｓ，ｂｕｔａｌｓｏｕｓ...

关键词： W/O emulsion explosiveautomatic adjusting charge ratioautomatic charge mixingautomatic adjusting output

Structural Characterization of Carbon-implanted GaSb

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Journal of Wuhan University of Technology(Materials Science) 2023年第5期38卷 969-973页

作者： SheN Guiying ZHAO Youwen he jianjun Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices Institute of Semiconductors Chinese Academy of SciencesP.O.Box 912Beijing 100083China College of materials science and opto-electronic technology University of Chinese Academy of SciencesBeijing100049China Rugao Institute of Compound Semiconductor Industry Jiangsu226500China

Ion implantation induced damage in GaSb and its removal by rapid thermal annealing(RTA)have been investigated by Raman *** evolution of the Raman modes as a function of implantation fluence,annealing temperature and time has been *** indicate that a lattice quality that is close to as-grown GaSb has been obtained by annealing the implanted samples at 500℃for 45 ***,consequent surface analyses by scanning electron microscope(SEM)and atomic force microscope(AFM)show that a heavily perturbed layer contains voids due to the outdifiusion of Sb atoms on the surface *** of the damage recovery and the structure of the implanted layer are discussed based on the experimental results.

关键词： Ion implantation Raman spectroscopy GaSb RTA

Modified sepiolite stabilized stearic acid as a form-stable phase change material for thermal energy storage

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International Journal of Minerals,Metallurgy and Materials 2023年第9期30卷 1835-1845页

作者： Chuanchang Li Xinke Peng jianjun he Jian Chen Key Laboratory of Renewable Energy Electric-Technology of Hunan Province School of Energy and Power EngineeringChangsha University of Science and TechnologyChangsha 410114China

Sepiolite(ST) was used as a supporting matrix in compiste phase change materials(PCMs) due to its unique microstructure, good thermal stability, and other raw material advantages. In this paper, microwave acid treatment were innovatively used for the modification of sepiolite. The modified sepiolite(ST_(m)) obtained in different hydrochloric acid concentrations(0.25, 0.5, 0.75, and 1.0 mol·L^(-1)) was added to stearic acid(SA) via vacuum impregnation method. The thermophysical properties of the composites were changed by varying the hydrochloric acid concentration. The SA-ST_(m0.5)obtained by microwave acid treatment at 0.5 mol·L^(-1)hydrochloric acid concentration showed a higher loading capacity(82.63%) than other composites according to the differential scanning calorimeter(DSC) analysis. The melting and freezing enthalpies of SA-ST_(m0.5)were of 152.30 and 148.90 J·g^(-1), respectively. The thermal conductivity of SA-ST_(m0.5)was as high as 1.52 times that of pure SA. In addition, the crystal structure, surface morphology, and microporous structure of ST_(m)were studied, and the mechanism of SAST_(m0.5)performance enhancement was further revealed by Brunauere Emmett Teller(BET) analysis. Leakage experiment showed that SAST_(m0.5)had a good morphological stability. These results demostrate that SA-ST_(m0.5)has a potential application in thermal energy storage.

关键词： sepiolite stearic acid phase change materials thermal energy storage

Stearic Acid/Copper Foam as Composite Phase Change Materials for Thermal Energy Storage

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Journal of Thermal Science 2020年第2期29卷 492-502页

作者： LI Chuanchang ZHAO Xinbo ZHANG Bo XIE Baoshan he Zhangxing CheN Jian he jianjun School of Energy and Power Engineering Changsha University of Science and TechnologyChangsha 410114China School of Chemical Engineering North China University of Science and TechnologyTangshan 063009China

The application of stearic acid in the latent thermal energy storage(LTES) systems is hindered due to its lower heat transfer rate. Stearic acid(SA) was blended with copper foam(CF) of pore numbers per inch(PPI) of 5, 20, and 40 to prepare composite phase change materials via a molten impregnation method. The thermal physical properties including latent heat, phase change temperature, and thermal energy storage density of composites were characterized. The thermogravimetric analysis indicated that the loadages of SA of SA/CF(5 PPI), SA/CF(20 PPI), and SA/CF(40 PPI) were 74.69%, 71.03%, and 63.54%, respectively;The latent heat of SA/CF(5 PPI), SA/CF(20 PPI), and SA/CF(40 PPI) were determined to 139.9 J·g^-1, 132.7 J·g^-1, and 117.8 J·g^-1, respectively. Meanwhile, the infrared thermal images of SA and SA/CF composites were provided to demonstrate the thermal energy storage and dissipation capability intuitively by the temperature response and surface temperature distribution. The infrared thermal images indicated the addition of CF also reduced the fluidity of liquid SA, and the SA/CF(40 PPI) had better internal heat transfer uniformity and thermal diffusion performance than SA/CF(5 PPI) and SA/CF(20 PPI). All these thermal properties suggested SA/CF(40 PPI) has the potential application in the latent thermal energy storage.

关键词： stearic acid latent thermal energy storage copper foam

Effect of traffic restriction on atmospheric particle concentrations and their size distributions in urban Lanzhou, Northwestern China

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Journal of Environmental Sciences 2014年第2期26卷 362-370页

作者： Suping Zhao Ye Yu Na Liu jianjun he Jinbei Chen Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Cold & Arid Regions Environmental & Engineering Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences

During the 2012 Lanzhou International Marathon, the local government made a significant effort to improve traffic conditions and air quality by implementing traffic restriction measures. To evaluate the direct effect of these measures on urban air quality, especially particle concentrations and their size distributions, atmospheric particle size distributions （0.5-20μm） obtained using an aerodynamic particle sizer （model 3321, TSI, USA） in June 2012 were analyzed. It was found that the particle number, surface area and volume concentrations for size range 0.5-10 μm were （15.0±2.1） cm-3, （11.8±2.6） μm2/cm3 and （1.9±0.6） μm2/cm3, respectively, on the traffic-restricted day （Sunday）, which is 63.2%, 53.0% and 47.2% lower than those on a normal Sunday. For number and surface area concentrations, the most affected size range was 0.5-0.7 and 0.5-0.8 μm, respectively, while for volume concentration, the most affected size ranges were 0.5-0.8, 1.7-2.0 and 5.0-5.4 μm. Number and volume concentrations of particles in size range 0.5-1.0μm correlated well with the number of non-CNG （Compressed Natural Gas） powered vehicles, while their correlation with the number of CNG-powered vehicles was very low, suggesting that reasonable urban traffic controls along with vehicle technology improvements could play an important role in improving urban air quality.

关键词： traffic restriction particle concentration size distribution urban air quality

基于多层感知机模型的长三角水稻种植区净生态系统碳通量模拟

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高原气象 2025年第1期44卷 191-200页

作者：席闻阳何建军王智麟郭立峰李亚荣中国气象科学研究院灾害天气国家重点实验室/中国气象局大气化学重点开放实验室北京200081 海南大学海洋科学与工程学院海南海口570228 南京信息工程大学计算机与软件学院江苏南京210044 兰州大学大气科学学院甘肃兰州730000

中国长江三角洲地区(以下简称长三角地区)是典型的水稻种植区,其碳源汇对区域气候和环境具有重要影响。本文系统地分析了长三角地区净生态系统碳交换量(net ecosystem exchange,NEE)与各个气象因子之间的关系,发现NEE与太阳短波辐射的... 详细信息

中国长江三角洲地区(以下简称长三角地区)是典型的水稻种植区,其碳源汇对区域气候和环境具有重要影响。本文系统地分析了长三角地区净生态系统碳交换量(net ecosystem exchange,NEE)与各个气象因子之间的关系,发现NEE与太阳短波辐射的相关性最强,其次与湿度相关参量(饱和水汽压差、相对湿度)等呈现较强的相关性。同时,NEE与太阳辐射、气温、湿度因子、风速和摩擦速度的相关性呈现明显的昼夜变化。基于上述分析,本文利用NEE和气象观测数据构建了长三角水稻下垫面多层感知机(Multilayer perceptron,MLP)NEE模拟模型,评估了模型的模拟效果及其时空稳定性。构建的MLP模型能较好地拟合NEE,训练集模拟的NEE与观测值的相关系数达到0.88,均方根误差为5.34μmol·m^(-2)·s^(-1);MLP模型在模拟长三角水稻季NEE时表现良好,在东台和寿县站点的模拟NEE结果与观测值的相关系数均高于0.78,模型具有较好的时空稳定性;MLP模型模拟白天平均NEE的效果好于夜间平均NEE的效果。研究结果揭示了影响水稻碳循环的主要气象因子,为认识长三角水稻种植区碳循环时空分布特征提供支撑,对准确评估全球和区域碳通量具有重要意义。

关键词：机器学习 MLP模型 NEE 长江三角洲地区水稻种植区

A Novel Control Strategy Based on Temperature Dynamic Decoupling and Belief Expert Rule Base for Large-scale Vertical Quench Furnaces 36

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A Novel Control Strategy Based on Temperature Dynamic Decoup...

Model test of stone columns as liquefaction countermeasure in sandy soils

第36届中国控制会议

作者： Weiran Dang jianjun he School of Information Science and Engineering Central South University

ISBN: (纸本)9781538629185

The large-scale vertical quench furnace has large volume,comphcated structure,strong coupling property,and a variety of heat transfer *** is hard to achieve stability *** in the actual production process,due to the serious variety of ambient temperature,its temperature fluctuate greatly In this paper,a Kernel Extreme Learning Machine（KELM） prediction method is proposed to predict the decoupling parameters in real time by predicting the temperature difference between adjacent two zones at the current time to achieve decouple the temperature of each ***,the Belief Expert Rule Base（BERB） PID control algorithm is utilized to control the temperature *** results show that the method can effectively improve the homogeneity of the temperature in the furnace,and the method is better than the existing method when the ambient temperature changes greatly.

关键词： Large Vertical Quench Furnace Error Prediction Dynamic Decoupling Belief Expert Rule PID

来源： cnki会议评论

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Frontiers of Structural and Civil Engineering 2016年第4期10卷 481-487页

作者： Mengfei QU Qiang XIE Xinwen CAO Wen ZHAO jianjun he Jiang JIN Faculty of Geosciences and Environmental Engineering Southwest Jiaotong University Chengdu 610031 China School of Civil Engineering Southwest Jiaotong University Chengdu 610031 China

The shaking table model test was conducted to investigate earthquake resistant behavior of stone columns under the intensity of an earthquake resistance of buildings is VIII. The test results show that when acceleration is less than 0.20 g, composite foundation is not liquefied, settlement is also small and pile dislocation is not observed; when acceleration is 0.3g, ground outside embankment＇s slope toe is liquefied and ground within stone column composite foundation is not. It is suggesting that reinforcement scale of stone column foundation should be widened properly. The designed stone column composite foundation meets the requirements for seismic resistance.

关键词： stone column composite foundation seismic liquefaction shaking table test

Simulated Sensitivity of Ozone Generation to Precursors in Beijing during a High O_(3) Episode

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Advances in Atmospheric Sciences 2021年第7期38卷 1223-1237页

作者： Meng CUI Xingqin AN Li XING Guohui LI Guiqian TANG jianjun he Xin LONG Shuman ZHAO PLA Troops No.78127 Chengdu 610000China Institute of Atmospheric Composition Chinese Academy of Meteorological SciencesBeijing 100081China School of Geography and Tourism Shaanxi Normal UniversityXi’an 710119China Institute of Earth Environment Chinese Academy of SciencesXi’an 710061China Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China School of Environment Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

This study uses the WRF-Chem model combined with the empirical kinetic modeling method(EKMA curve)to study the compound pollution event in Beijing that happened in 13−23 May *** tests are conducted to analyze ozone sensitivity to its precursors,and to develop emission reduction *** results suggest that the model can accurately simulate the compound pollution process of photochemistry and *** VOCs and NOx were reduced by the same proportion,the effect of O_(3)reduction at peak time was more obvious,and the effect during daytime was more significant than at *** degree of change in ozone was peak time>daytime *** reducing or increasing the ratio of precursors by 25%at the same time,the effect of reducing 25%VOCs on the average ozone concentration reduction was most *** degree of change in ozone decreased with increasing altitude,the location of the ozone maximum change shifted westward,and its range *** the altitude increases,the VOCs-limited zone decreases,VOCs sensitivity decreases,NOx sensitivity *** controlled area changed from near-surface VOCs-limited to high-altitude *** examining the EKMA curve,we have found that suburban and urban are sensitive to *** sensitivity tests indicate that when VOCs in suburban are reduced about 60%,the O_(3)-1h concentration could reach the standard,and when VOCs of the urban decreased by about 50%,the O_(3)-1h concentration could reach the ***,these findings could provide references for the control of compound air pollution in Beijing.

关键词： Ozone(O_(3)) Sensitivity of ozone to its precursors WRF-Chem model EKMA Beijing

Dual Rolling Circle Amplification- Assisted Single-Particle Fluorescence Profiling of Exosome heterogeneity for Discriminating Lung Adenocarcinoma from Pulmonary Nodules

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CCS Chemistry 2023年第4期5卷 947-957页

作者： Yan Zhou Haoxiang Li Min Hou jianjun he Jian-Hui Jiang Hunan Key Laboratory of Organ Fibrosis Department of Pulmonary and Critical Care MedicineThe Third Xiangya HospitalCentral South UniversityChangsha 410013 State Key Laboratory of Chemo/BioSensing and Chemometrics College of Biomedical SciencesCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082

Exosomes secreted by tumor cells carry abundant molecular biomarkers that reflect the status of their originating *** tumor-derived exosomes(TDEs)have emerged as attractive diagnostic ***,the identification and characterization of highly heterogeneous TDEs remain practically ***,we report a dual rolling circle amplification(DRCA)-assisted approach for the selective encapsulation of single TDEs for fluorescence microscopic and flow cytometric *** have been targeted by aptamers that recognized their surface tumor marker and exosomal marker CD63,following DRCA that produced entangling polymeric DNA chains,resulting in facile particle enlargement that allows single-particle fluorescence profiling of exosome *** have demonstrated the use of a dual-marker positive ratio for exosome differentiation and applied division and multiplication operations for normalized andmagnified marker heterogeneity *** further applied this assay to distinguish lung adenocarcinoma and pulmonary nodule patients and found an accuracy of 90%.We anticipate promising transformations of this straightforward assay into clinically implantable diagnostic methods.

关键词： rolling circle amplification exosomes single-particle fluorescence analysis cancer diagnosis