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GRACE time-variable gravity and its application to geoscience:Quantitative analysis of relevant literature

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Earth and Planetary Physics 2023年第2期7卷 295-309页

作者： cao liu WenKe Sun College of Earth and Planetary Science University of Chinese Academy of SciencesBeijing 100049China

The Gravity Recovery and Climate Experiment(GRACE)is the most important gravity satellite to date in human *** its launch in 2002,GRACE time-varying gravity has had an unprecedented impact on earth science and has generated revolutionary *** of natural phenomena such as climate warming,glacial melting,sea level rise,and earthquakes,earth science research has become an increasingly popular discipline in recent *** article summarizes the importance of GRACE time-varying gravity,its application to geoscience,and its *** analyzed the historical development and current status of GRACE time-varying gravity as well as research hotspots by searching the literature in the core collection databases of the China National Knowledge Infrastructure and the Web of Science over the past 20 *** CiteSpace and VOSviewer software packages were applied with reference to the principle of literature *** investigation and analysis of characteristic indexes,such as the numbers of publications,co-occurrence of keywords,and co-citation of documents,uncovered the wide application and promotion of gravity satellites,especially GRACE time-varying gravity,in earth *** results showed that the number of publications addressing GRACE data and time-varying gravity theory is increasing annually and that the USA,China,and Germany are the main *** Chinese Academy of Sciences,the National Aeronautics and Space Administration of the United States,and the Helmholtz Association of German Research Centres rank among the top three institutions in the world in terms of producing the most publications on this *** found that GRACE time-varying gravity plays unique roles in measuring changes in terrestrial water storage changes,ice and snow melting and sea level changes,and(co)seismic gravity changes,as well as in promoting other disciplines.

关键词： Gravity Recovery and Climate Experiment(GRACE) Gravity Recovery and Climate Experiment Follow-On(GRACE-FO) time-varying gravity bibliometry mass change CiteSpace VOSviewer

HYBRID SIMULATION OF THE HYDRAULIC CHARACTERISTICS AT RIVER AND LAKE CONFLUENCE

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Journal of Hydrodynamics 2011年第1期23卷 105-113页

作者： liu Shi-he cao Bing College of Water Resource and Hydropower Wuhan University Wuhan 430072 China

The hydraulic characteristics at the confluence reach of river and lake are influenced by multiple factors such as inflow,topography and vegetation resistance,and are very *** this article,the confluence reach of Yangtze River and Dong-ting Lake is selected as a special example and a hybrid model is built to study the flow at this confluence,with the consideration of the interactions between aquatic vegetation and *** tests and calculations show that the model is effective and highly *** simulations show that the separation levee at the confluence reach may change the discharge capacity in the flood plain,which would be enhanced in the upper reach of the levee,hardly changed in the middle reach and reduced at the lower ***,the separation levee also limits the water exchange between the Yangtze River and Dong-ting Lake.

关键词： confluence reach hybrid model separation levee discharge capacity in flood plain

Vortical structures and wakes of a sphere in homogeneous and density stratified fluid

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Journal of Hydrodynamics 2021年第2期33卷 207-215页

作者： liu-shuai cao Feng-lai Huang Cheng liu De-cheng Wan Computational Marine Hydrodynamics Lab(CMHL) School of Naval ArchitectureOcean and Civil Engi-neeringShanghai Jiao Tong UniversityShanghai 200240China Ocean College Zhejiang UniversityZhoushan 316021China

Vortical structures and wakes of bluff bodies in homogenous and stratified environment are common and important in ocean *** on the Boussinesq approximation,a thermocline model is proposed to deal with the variable density stratified fluid,and implemented in the commercial software Simcenter STAR-CCM+*** improved delayed detached eddy simulation(IDDES)modeling method is adopted to resolve the coherent vortical structures and turbulent wakes precisely and *** conditions consisting of one homogenous and three stratified fluid cases with different density gradient past a sphere at Reynolds number 3700 are *** show that density stratification has a great impact on the vortical structures,the vertical motion is suppressed and internal waves will be induced and propagated,which is very different with that of homogenous *** the stratification strength increases,the vortical structures are gradually flattened,the asymmetry and anisotropy between vertical and horizontal motions are enhanced.

关键词： Vortical structures wakes sphere homogenous stratified fluid

Generation and Photocatalytic Activities of Bi@Bi2O3 Microspheres

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Nano Research 2011年第5期4卷 470-482页

作者： Xiangwen liu Huaqiang cao Jiefu Yin Department of Chemistry Tsinghua University Beijing 100084 China

Composite Bi@Bi2O3 microspheres have been synthesized via a microwave-assisted solvothermal route. The Bi@Bi2O3 microspheres had a narrow size distribution in the range 1.2-2.8 mm. Glucose was selected as the reductant, BiCl3 as the bismuth source, and ethylene glycol （EG） as the solvent in the synthesis system. The as-synthesized sample was characterized by X-ray diffraction （XRD）, Raman spectroscopy, X-ray photoelectron spectroscopy （XPS）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, particle diameter distribution, energy dispersive X-ray spectroscopy （EDS）, ultraviolet-visible （UV-vis） spectroscopy, and photoluminescence （PL） spectroscopy. The photocatalytic activities of the Bi@Bi2O3 microspheres were evaluated by the photodegradation of rhodamine B （RhB） and methyl orange （MO） dyes under UV light irradiation. The degradation reached -96.6% for RhB and 100% for MO after 4 h reaction in the presence of the as-synthesized Bi@Bi2O3 microspheres.

关键词： Bismuth bismuth oxide photocatalysis microspheres solvothermal method

Formation of sulfur oxide groups by SO_(2) and their roles in mercury adsorption on carbon-based materials

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Journal of Environmental Sciences 2022年第9期34卷 44-49页

作者： Fenghua Shen Shudan He Junyuan Li cao liu Kaisong Xiang Hui liu School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China School of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

The presence of SO_(2) display significant effect on the mercury(Hg) adsorption ability of carbon-based sorbent. Yet the adsorption and oxidation of SO_(2) on carbon with oxygen group, as well as the roles of different sulfur oxide groups in Hg adsorption have heretofore been unclear. The formation of sulfur oxide groups by SO_(2) and their effects on Hg adsorption on carbon was detailed examined by the density functional theory. The results show that SO_(2) can be oxidized into SO_(2) by oxygen group on carbon surface. Both C-SO_(2) and C-SO_(2)can improve Hg adsorption on carbon site, while the promotive effect of C-SO_(2) is stronger than C-SO_(2). Electron density difference analyses reveal that sulfur oxide groups enhance the charge transfer ability of surface unsaturated carbon atom, thereby improving Hg adsorption. The experimental results confirm that surface active groups formed by SO_(2) adsorption is more active for Hg adsorption than the groups generated by SO_(2).

关键词： Sulfur dioxide Mercury Carbon sorbent Adsorption mechanism

高蛋白重组米理化特性、结构特征与营养品质研究

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中国粮油学报 2024年第5期39卷 37-45页

作者：吴俊灵廖卢艳邓慧清任贤龙刘操吴卫国石萌湖南农业大学食品科学技术学院长沙410128 湖南角山米业有限责任公司衡阳421200 桃源县兴隆米业科技开发有限公司常德415705

高蛋白重组米是是指以大米为主要原料,运用蛋白质强化技术手段,经双螺杆挤压、切割、干燥等一系列工序制成与天然大米类似的颗粒米状制品,其蛋白含量(干基)≥12 g/100 g。研究以非高蛋白重组米(市售)、普通大米为对照,对自制和市售高蛋... 详细信息

高蛋白重组米是是指以大米为主要原料,运用蛋白质强化技术手段,经双螺杆挤压、切割、干燥等一系列工序制成与天然大米类似的颗粒米状制品,其蛋白含量(干基)≥12 g/100 g。研究以非高蛋白重组米(市售)、普通大米为对照,对自制和市售高蛋白重组米的食味值、滋气味特性、结构特征、消化特性和营养品质指标等进行全面系统分析研究,为满足蛋白质摄入不足的人群的营养需求,开发高蛋白重组米提供参考。研究结果表明:高蛋白重组米在有机硫化物、硫化物、氮氧化合物等挥发性气味组分含量方面明显高于对照样品(P0.05);挤压重组高蛋白大米淀粉晶型为V型结晶的特征;挤压重组米淀粉相对结晶度在6.1%,低于对照普通大米相对结晶度19.8%;高蛋白重组米蒸煮截面呈现密集蜂窝状微孔;挤压重组米抗性淀粉(RS)质量分数在17%以上,高于对照普通大米RS质量分数14%;自制高蛋白重组米中必需氨基酸和总氨基酸含量分别为49.45、129.00 mg/g,均显著高于对照(P>0.05),必需氨基酸与非必需氨基酸、总氨基酸比例分别为62.17%、40.86%,均与FAO/WHO推荐的理想蛋白质模式接近。

关键词：高蛋白重组米理化特性结构特征营养品质

Multifunctional high-fluorine-content molecule with high dipole moment as electrolyte additive for high performance lithium metal batteries

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Rare Metals 2022年第3期41卷 726-729页

作者： Xi Tang Wen-Chao Zhang liu-Yue cao Institute of Environmental Engineering School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China School of Chemical and Biomolecular Engineering the University of SydneyDarlingtonNSW 2006Australia

Lithium metal batteries (LMBs) have been regarded as the most promising technology beyond lithium-ion batteries to meet the ever-increasing demand for high-energy and highpower secondary battery technologies. Challenges such as poor electrochemical stability of electrolytes, dendritic Li plating, gradual cathode structure degradation.

关键词： battery lithium fluorine

RECENT PROGRESS ON PARTICLE IMAGE VELOCIMETRY IN CHINA

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Journal of Hydrodynamics 2006年第1期18卷 11-19页

作者： liu Ying-zheng cao Zhao-min School of Mechanical and Power Engineering Shanghai Jiaotong University Shanghai 200030 China

An up-to-date review of recent progress on Particle Image Velocimetry （PIV） instrumentations was extensively presented in the paper. Around 80 literatures were referenced. Among various aspects of PIV advances, the present concern was mainly placed on progresses of advanced algorithms and microscopic PIV. Attention was specifically directed toward contributions of domestic researchers to these subjects, which were stressed throughout the discussion. In addition, diverse applications of PIV technology in China, e. g., turbulence measurement, hydrodynamics, rotating flows, two-phase flows, were specifically summarized.

关键词： Particle Image Velocimetry (PIV) algorithm microscopic PIV review

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农村黑臭水体污染物削减量分配研究

水电能源科学 2024年第7期42卷 44-47,86页

作者：方鹏燕刘操邓中麟段新祥王敏秦柳李鹏莉中国环境科学研究院北京100012 黄冈市生态环境局湖北黄冈438021 湖北大学资源环境学院湖北武汉430062 江苏菲力环保工程有限公司江苏无锡214200 武汉中地清宁规划设计有限公司湖北武汉430070

随着城乡经济的不断发展和人民生活水平的提高,农村地区的污染问题日益凸显,其中黑臭水体问题是一大难题。为改善水环境质量,有序开展农村黑臭水体治理工作,以浠水县农村黑臭水体为例,计算浠水县农村黑臭水体污染负荷情况。基于农村黑... 详细信息

随着城乡经济的不断发展和人民生活水平的提高,农村地区的污染问题日益凸显,其中黑臭水体问题是一大难题。为改善水环境质量,有序开展农村黑臭水体治理工作,以浠水县农村黑臭水体为例,计算浠水县农村黑臭水体污染负荷情况。基于农村黑臭水体的水环境容量,计算各控制单元的削减量,对污染物的削减量进行分层级分配的研究,建立削减量分配模型,确定不同水体的主要污染源及对应的不同污染源的削减量,提高污染治理的效果和可持续性,从而实现精准治污、科学治污。

关键词：农村黑臭水体污染成因污染物负荷削减量分配贡献率削减分配法