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CRWS-mountain Project:Coordinate remediation techniques and devices for water-soil pollution in mountain areas in China

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Journal of Mountain Science 2021年第9期18卷 2441-2446页

作者： SONG Ling LI Lei ZHANG chao-jie huang Li GUO Jin-song ZHU Bo ZHOU Ming-hua Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment College of Environment and EcologyChongqing UniversityChongqing 400030China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtze River) Ministry of Agriculture and Rural AffairsHuazhong Agricultural UniversityWuhan 430070China

Rural environmental governance is an important strategy to achieve the goal of building"green liveable villages"in ***,studies on technology and devices for pollution remediation focus mainly on urban areas;in this regard,few studies have focused on rural areas,especially mountainous or hilly areas with *** remediation techniques and devices for water-soil restoration in mountain areas(CRWS-mountain),a subproject of the"environmental monitoring and remediation in rural areas"project(ERM-rural project),was undertaken to develop techniques and devices for coordinating the restoration of water and soil in rural mountainous and hilly areas with *** CRWS-mountain project will attempt to explore the mechanisms of pollutant transportation and transformation in the interflow-soil-surface water system,establish in-situ and heterotopic remediation systems in landfill,towns and surrounding areas,and construct a comprehensive system for"polluted soilinterflow-surface water"by integrating all the technologies and devices at Yanting,a typical rural mountainous hilly area in Sichuan,Southwest *** expect that after using this comprehensive system,the water quality will meet the requirements for local water function *** operation cost is 10%lower than that of the existing urban equipment.

关键词： Coordinate remediation Interflow Drywet alteration Rural

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Improvement of proof-ultimate strength difference in laser additive manufactured Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si alloy by tuning basketweave structure

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Journal of Iron and Steel Research International 2019年第6期26卷 631-636页

作者： Guo-chao Li Xu Cheng hua-ming Wang National Engineering Laboratory of Additive Manufacturing for Large Metallic Components and Engineering Research Center of Ministry of Education on Laser Direct Manufacturing for Large Metallic Components School of Materials Science and Engineering Beihang University Beijing 100191 China Beijing Yuding Additive Manufacturing Research Institute Co. Ltd. Beijing 102206 China

After annealed at 1000 ℃, a special basket-weave structure is obtained in laser additive manufactured Ti-6Al-2V-1.5Mo- 0.5Zr-0.3Si alloy. The unit of the special basket-weave structure is a lamellas clusters, which consist of lamellar primary ot (otp), crab-like structures at the edges of otp and lamellar secondary a (as) on both sides of otp. As the units of basket-weave structures, the width of the clusters is much larger than that of a lamellas in as-deposited alloy. The formation temperature and process of the special basket-weave structure are studied, and the room temperature properties are tested and compared with the as-deposited alloy. The results show that the formation of the special basket-weave structure finishes within about 30 s and crab-like structures form earlier than lamellar as. The yield strength of the alloy is decreased by about 75 MPa compared to that of the as-deposited alloy. Besides, the proof-ultimate strength difference of the alloy is two times higher than that of the as-deposited alloy with about 34% improvement for the impact toughness. It is because ot colony size shows a positive correlation to the width of the unit forming basket-weave structure. The enhancement in proof-ultimate strengthdifference could significantly improve the toughness of the alloy, and thus effectively increase the safety of the alloy.

关键词： Titanium alloy Basket-weave structure Formation process a colony size Yield strength

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Effect of Intercritical Annealing Time on the Microstructures and Tensile Properties of a High Strength TRIP Steel

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Acta Metallurgica Sinica(English Letters) 2014年第3期27卷 457-463页

作者： chao Wang hua Ding Jun Zhang Hongyan Wu School of Materials and Metallurgy Northeastern University State Key Laboratory of Rolling and Automation Northeastern University

A new Mn-Si-Al-Mo-Nb transformation-induced plasticity steel was annealed by intercritical annealing for different durations to investigate the partitioning of C element and the volume fraction change of the microstructural constituents. Direct experimental evidence confirms the partitioning of C elements in different phases during heat treatment by Electron probe microanalysis and X ray diffraction. The distribution of the precipitates was investigated as well. It was revealed that the microstructures and mechanical properties of the investigated steels were affected by the intercritical annealing time. According to the present experiment, the volume fraction of retained austenite and the product of tensile strength and total elongation of investigated steel decrease with increasing intercritical annealing time. It was observed that high tensile strength of 1,103 MPa, total elongation of 21.3%, and strength-ductility product of 23,493.9 MPa % could be successfully produced in this experimental steel at intercritical annealing temperature of 830 ℃, holding for 1 min, and isothermal bainite treatment of 440 ℃ for 5 min holding time.

关键词： TRIP steel Intercritical annealing Carbon partitioning Retained austenite Stability

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Code acquisition method based on wavelet transform filtering

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Journal of Systems Engineering and Electronics 2015年第6期26卷 1169-1176页

作者： chao Wu Luping Xu hua Zhang Wenbo Zhao School of Aerospace Science and Technology Xidian University

In order to improve the acquisition probability of satellite navigation signals, this paper proposes a novel code acquisition method based on wavelet transform filtering. Firstly, the signal vector based on the signal passing through a set of partial matched filters （PMFs） is built. Then, wavelet domain filtering is performed on the signal vector value. Since the correlation signal is low in frequency and narrow in bandwidth, the noise out-of-band can be filtered out and the most of the useful signal energy is retained. Thus this process greatly improves the signal to noise ratio （SNR）. Finally, the detection variable when the filtered signal goes through the combination process is constructed and the detection based on signal energy is made. Moreover, for the better retaining useful signal energy, the rule of selection of wavelet function has been made. Simulation results show the proposed method has a better detection performance than the normal code acquisition methods under the same false alarm probability.

关键词： code acquisition wavelet transform filtering detection probability.

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High-Dimensional Nonlinear Envelope Equations and Nonlinear Localized Excitations in Photonic Crystals

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Communications in Theoretical Physics 2006年第1X期46卷 149-154页

作者： HANG chao huang Guo-Xiang Department of Physics East China Normal University Shanghai 200062 China

We investigate the nonlinear localized structures of optical pulses propagating in a one-dimensional photonic crystal with a quadratic nonlinearity. Using a method of multiple scales we show that the nonlinear evolution of a wave packet, formed by the superposition of short-wavelength excitations, and long-wavelength mean fields, generated by the self-interaction of the wave packet, are governed by a set of coupled high-dimenslonal nonlinear envelope equations, which can be reduced to Davey-Stewartson equations and thus support dromionlike high-dimensional nonlinear excitations in the system.

关键词： photonic crystal dromion

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Propagation effect of gravitational wave on detector response

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Science China(Physics,Mechanics & Astronomy) 2016年第10期59卷 81-84页

作者： Zhe Chang chao-Guang huang Zhi-chao Zhao Institute of High Energy Physics and Theoretical Physics Center for Science Facilities Chinese Academy of Sciences

Dear Editors,The detection of gravitational waves（GW）in the event GW150914 by the two advanced detectors of the Laser Interferometer Gravitational-wave Observatory（LIGO）[1]opens a new era for the direct detection of GW[2],searching black hole coalescence[3]and‘heavy’black holes with more than25 solar mass[4],test of general relativity[5],understanding the astrophysical environment of black hole formation[6],*** one words,

关键词：探测器引力波传播效应广义相对论激光干涉直接检测太阳质量物理环境

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Oryza pan-genomics: A new foundation for future rice research and improvement

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The Crop Journal 2021年第3期9卷 622-632页

作者： chao huang Zhuo Chen Chengzhi Liang State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

The wild rice species in the genus Oryza harbor a large amount of genetic diversity that has been untapped for rice ***-genomics has revolutionized genomic research in ***,rice pan-genomic studies so far have been limited mostly to cultivated accessions,with only a few close wild *** in sequencing technologies have permitted the assembly of highquality rice genome sequences at low cost,making it possible to construct genus-level pan-genomes across all *** this review,we summarize progress in current research on genetic and genomic resources in Oryza,and in sequencing and computational technologies used for rice genome and pangenome *** future work,we discuss the approaches and challenges in the construction of,and data access to,Oryza pan-genomes based on representative high-quality genome *** Oryza pan-genomes will provide a basis for the exploration and use of the extensive genetic diversity present in both cultivated and wild rice populations.

关键词： Oryza Pan-genome De novo assembly Genetic diversity Wild rice

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Pinacol coupling going in a photocatalytic asymmetric manner:construction of chiral vicinal amino alcohols

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Science China Chemistry 2018年第5期61卷 509-510页

作者： Sha-hua huang Ran Hong School of Chemical and Environmental Engineering Shanghai Institute of Technology Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences

Vicinal amino alcohols are a class of important motifs in pharmaceuticals,natural products as well as wide application in asymmetric catalysis（Scheme 1（a））.It is no doubt that development of efficient methods to a... 详细信息

关键词： Pinacol coupling going in a photocatalytic asymmetric manner:construction of chiral vicinal amino alcohols SCE

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Amperometric Glucose Sensor Based on Batch CuO-Modified Screen-Printed Silver-Carbon Electrodes

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 35-41页

作者：夏海艳 huang Yin YANG hua WANG Xintian SHI Jianping LIU Lixia FU Yacheng 全昌云李苏原 Cofoe Medical Technology Company Limited Institute of New Energy Hexi University Chemistry and Chemical Engineering Central South University

CuO nanoparticles were successfully synthesized via a two-jet electrospun method,and then screen-printed on silver-carbon electrodes,forming CuO-modified Ag-C （CuO/Ag-C） disposable strip *** natural environment condition for glucose detection,the obtained CuO/Ag-C electrodes show a high sensitivity of 540 nA·mM-1·cm-2,and a low limit of detection （0.68 mM） in a wide linear response range of 0.68 mM and 3 mM （signal/noise=3）,*** addition,the CuO/Ag-C electrodes also exhibit excellent anti-interference,air stability and *** a result,the fabrication of CuO nanoparticles via an electrospun process and the technique of screen-printed electrodes are of great significance for glucose detection.

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Analytical current model of tunneling field-effect transistor considering the impacts of both gate and drain voltages on tunneling

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Science China(Information Sciences) 2015年第2期58卷 174-181页

作者： WANG chao WU ChunLei WANG JiaXin huang QianQian huang Ru Key Laboratory of Microelectronic Devices and Circuits Institute of Microelectronics Peking University

In this paper, a closed-form current model for bulk tunneling field-effect transistor(TFET) is put forward. Based on the operation mechanism, the channel surface potential φsf which involves the impact of both the gate and the drain voltages is established for the first time. In addition, a new calculation method for the dynamic tunneling width, which is the critical parameter for the TFET modeling, is derived from the surface potential. The surface-potential-based current model is established which is in a good agreement with TCAD simulation results.

关键词： tunneling field-effect transistor current model surface potential drain voltage tunneling width

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