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Science Bulletin 2022年第13期67卷 1326-1330,M0003页

作者： Qingrui Huang Jiawei Zeng Qingyun Lang Feng Gao Dejun Liu Siyu Tian Rui Shi Ling Luo Hao Wang Liping Hu Linrui Jiang Yawei Liu Kailiang Li Yunbo Wu Junjie Xu Wenxi Jiang Ning Guo Zhihai Chen Xiaohua Hao Ronghua Jin jinghua yan Yufa Sun CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 101408China College of Life Sciences Anhui Agricultural UniversityHefei 230036China Health Service Department of the Guard Bureau of the General Office of the Central Committee of the Communist Party of China Beijing 100017China Institute of Physical Science and Information Anhui UniversityHefei 230039China National Center for Infectious Diseases Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China

SARS-CoV-2 Omicron变异株已在全球范围内广泛传播.包括中国在内的许多国家广泛接种了SARS-CoV-2灭活疫苗(IAV)、重组蛋白疫苗(PRV)和腺病毒载体疫苗(Ad V),以达到群体免疫效果.该研究系统评价了完成不同疫苗全程接种后以及接种不同疫... 详细信息

SARS-CoV-2 Omicron变异株已在全球范围内广泛传播.包括中国在内的许多国家广泛接种了SARS-CoV-2灭活疫苗(IAV)、重组蛋白疫苗(PRV)和腺病毒载体疫苗(Ad V),以达到群体免疫效果.该研究系统评价了完成不同疫苗全程接种后以及接种不同疫苗加强针后的341份人血清对原始毒株和Omicron变异株的交叉中和活性.研究发现,所有类型疫苗诱导的针对Omicron变异株BA.1的中和抗体水平都明显低于原始毒株.初免疫IAV和Ad V后,分别接种Ad V和PRV的异源加强针可以最大程度地提高血清对Omicron中和活性.此外,该研究使用m RNA疫苗在小鼠模型中评估了初次免疫编码Spike蛋白的m RNA疫苗后,加强免疫编码原始毒株或者不同突变株RBD蛋白的m RNA疫苗对Omicron中和效果.结果发现,与原始毒株加强针相比,只有Omicron加强针疫苗显著地提升了Omicron的中和抗体水平.该研究对各种疫苗加强针的系统性评价可为接下来对抗Omicron变异株的免疫接种提供参考.

关键词：灭活疫苗不同疫苗免疫接种初次免疫 PRV 系统性评价群体免疫中和活性

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陶瓷生态工业园的陶瓷生产过程能量集成分析

陶瓷学报 2010年第1期31卷 158-161页

作者：宫小龙梁华银冯青陆琳严景华景德镇陶瓷学院材料工程学院景德镇333403

基于生态工业园能量集成理论和热力学原理,阐述了陶瓷生态工业园物流与能流的共生耦合资源化余热利用模式。在分析陶瓷生产过程和窑炉尾气余热利用潜力的基础上,指出了在余热利用模式引导下的资源化途径。陶瓷生态工业园余热回收利用使... 详细信息

基于生态工业园能量集成理论和热力学原理,阐述了陶瓷生态工业园物流与能流的共生耦合资源化余热利用模式。在分析陶瓷生产过程和窑炉尾气余热利用潜力的基础上,指出了在余热利用模式引导下的资源化途径。陶瓷生态工业园余热回收利用使能源在产业链中得到充分利用,可提高园区能源效率并减少污染物的排放,是实现生态工业园能量集成的重要途径。

关键词：陶瓷生态工业园能量集成热力学原理余热利用

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中国铬资源供应风险评价与对策研究

资源科学 2018年第3期40卷 516-525页

作者：刘全文沙景华闫晶晶张国丰范松梅何更宇中国地质大学(北京)人文经管学院北京100083 河北地质大学经贸学院石家庄050031

铬是生产不锈钢的重要原料,作为中国的紧缺矿产,铬资源的供应安全关系到不锈钢产业的稳定发展。对当前中国铬资源供应风险进行评价,识别其在供应安全方面存在的主要风险点及风险程度,有助于提出针对性的风险治理建议。为此,本研究整理了... 详细信息

铬是生产不锈钢的重要原料,作为中国的紧缺矿产,铬资源的供应安全关系到不锈钢产业的稳定发展。对当前中国铬资源供应风险进行评价,识别其在供应安全方面存在的主要风险点及风险程度,有助于提出针对性的风险治理建议。为此,本研究整理了2000—2016年中国和全球的铬储量、产量、消费量、贸易量、价格、回收率及国家风险指数等数据,从资源、市场和政治三个维度选取评价指标,对供应风险进行直观的量化分级评价。供应风险主要体现在资源保障度低、对外依存度高、二次回收水平低、市场话语权较弱、进口集中度高和地缘政治风险大等6个方面。结合风险评价结果,本文提出了相关风险治理建议:推动国内企业到境外投资参股开发矿产资源;加大对含铬废品资源的回收再利用,加强对不锈钢废料的熔解技术研究;国家对铬资源进行必要的储备,稳定市场预期,提高资源保障能力。

关键词：铬资源供应风险风险评价风险治理

Seasonal and Diurnal Variations of Cloud Systems over the Eastern Tibetan Plateau and East China:A Cloud-resolving Model Study

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Advances in Atmospheric Sciences 2022年第7期39卷 1034-1049页

作者： jinghua CHEN Xiaoqing WU Chunsong LU yan YIN Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science&TechnologyNanjing 210044China Key Laboratory of Meteorology and Ecological Environment of Hebei Province Shijiazhuang 050022China Department of Geological and Atmospheric Sciences Iowa State UniversityAmesIowa 50011USA

The seasonal and diurnal variations of cloud systems are profoundly affected by the large-scale and local *** this study,a one-year-long simulation was conducted using a two-dimensional cloud-resolving model over the Eastern Tibetan Plateau(ETP)and two subregions of Eastern China:Southern East China and Central East *** convective clouds(DCCs)rarely occur in the cold season over ETP,whereas DCCs appear in Eastern China throughout the year,and the ETP DCCs are approximately 20%−30%shallower than those over Eastern *** strong rainfall events(precipitation intensity,PI>2.5 mm h−1)in Eastern China are related to warm-season DCCs with ice cloud *** of the high elevation of the ETP,the warm-season freezing level is lower than in Eastern China,providing favorable conditions for ice cloud *** are responsible for the diurnal variations of warm-season rainfall in all three ***-season DCCs over the ETP have the greatest total cloud water content and frequency in the afternoon,resulting in an afternoon rainfall *** addition,rainfall events in the ETP also exhibit a nocturnal peak in spring,summer,and autumn due to *** surface heat fluxes around noon can trigger or promote DCCs in spring,summer,and autumn over the ETP but produce only cumulus clouds in winter due to the cold and dry environment.

关键词： the Tibetan Plateau convective system seasonal variation diurnal variation

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2002年20号热带风暴风场非对称研究

海洋通报 2006年第2期25卷 81-86页

作者：吴迪生闫敬华王贝贝赵雪冯伟忠马毅张纪纬国家海洋局南海预报中心广州510300 广州热带海洋气象研究所广州510080

用实测资料分析了2002年20号热带风暴(下面简称TCTropicalcyclone)风场分布,结果表明:TC从扰动到成熟期,风速分布均不对称,强风区位于台风东北部。但当TC进入北部湾后,受地形影响,强风区位于台风东南部。随着TC的加强,强上升运动有向TC... 详细信息

用实测资料分析了2002年20号热带风暴(下面简称TCTropicalcyclone)风场分布,结果表明:TC从扰动到成熟期,风速分布均不对称,强风区位于台风东北部。但当TC进入北部湾后,受地形影响,强风区位于台风东南部。随着TC的加强,强上升运动有向TC中心靠近趋势,上升最大值高度有上升趋势,TC进入北部湾后,上升及下沉运动均是加强,上升最大值仍出现在350hPa层附近,TC中心以北有强下沉运动。TC登陆后内区仍有强上升运动,上升最大值出现在500hPa层附近,TC北侧有深厚的下沉运动。TC有暖心结构,350hPa附近增暖最明显,最强水汽辐合出现在850hPa附近的南半圆内。

关键词： 0220号热带风暴移动路径结构变化动力学特征

Steric paper based ratio-type electrochemical biosensor with hollow-channel for sensitive detection of Zn2+

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Science Bulletin 2017年第16期62卷 1114-1121页

作者： Li Li yan Zhang Lina Zhang Shenguang Ge Mei yan jinghua Yu School of Chemistry and Chemical Engineering University of JinanJinan 250022China Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials University of JinanJinan 250022China

The construction of flexible platform possessing the functions of immobilizing, separating, rinsing, and high-throughput analysis plays a significant role in biological and clinical research. Herein, hollow- channel technique was integrated with lab-on-paper for the simultaneous determination of two different concentrations of Zn2＋ based on the origami principle, in which microfiuidic channels were first patterned on a cellulose paper using commercial solid-state wax printer. Hollow-channels were created by laser cutting method as the role of both injecting ending and reaction tank. After screen printing three elec- trodes system, the resulting planar paper sheets were then folded into steric structures and functional- ized by in-situ synthesized reduced graphene oxide. As a proof-of-concept, such lab-on-paper device was employed in the ratiometric electrochemical monitoring of zinc ion from the environment and HepG2 cells extract, by combining with co-catalysis of porous metal-organic frameworks and hemin/ G-quadruplex toward H202 in the linear range of 0.1-7,000 nmol/L. The results indicated that integrating hollow-channel with steric lab-on-paper offered a new methodological approach for the development of metal ions monitoring research. It is believed that it could be useful for various point-of-care related research fields, such as, on-site environmental monitoring, food safety, and disease diagnosis.

关键词： Flexible platform Lab-on-paper device Ratiometric electrochemical monitoring Zinc ion

Reflection separation technology based on polarization characteristics

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Journal of Systems Engineering and Electronics 2022年第5期33卷 1032-1042页

作者： ZHANG yan ZHANG jinghua SHI Zhiguang ZHANG Yu LING Feng National Key Laboratory of Science and Technology on Automatic Target Recognition College of Electronic Science and EngineeringNational University of Defense TechnologyChangsha 410073China

Specific to the reflected light problem on the surface of transparent body,the polarization characteristics of the reflection region are analyzed,and a polarization characterization model combining the reflection and transmission effects is *** the basis of the polarization characteristic analysis,the minimum value of normalized cross-correlation(NCC)coefficient between transmission and reflection images is solved through the gradient descent method,and their polarization degrees under the minimum correlation are *** to the distribution relations of the transmitted and reflected lights in perpendicular and parallel directions,reflection separation is realized via the polarized orthogonality difference algorithm based on the degree of reflection polarization and the degree of transmission polarization.

关键词： reflection separation transparent object correlation polarization characteristics

A Simplified Chemical Reaction Mechanism for Surrogate Fuel of Aviation Kerosene

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Chemical Research in Chinese Universities 2017年第2期33卷 274-281页

作者： Liu, Yunpeng yan, Yingwen Dai, Chao Li, jinghua Jiangsu Province Key Laboratory of Aerospace Power Systems Nanjing University of Aeronautics and Astronautics Nanjing P. R. China

n-Decane was chosen as a one-component surrogate fuel to investigate the combustion performance ofRocket Propellant-3（RP-3） aviation kerosene. Sensitivity analysis and the reaction-path mlalysis method were used tosimplify the detailed reaction mechanism of n-decane, and a simplified mechanism including 36 species and 62 ele-mentary reaction steps was obtained. Moreover, 38-step elementary reaction investigated in the reference was simu-lated in the paper. Numlerical simulation method was conducted for both the 62-step and the 38-step reaction me-chanisms using pre-evaporation combustion models. Simultaneously Bunsen bunter for the combustion of premixed,pre-evaporated RP-3 aviation kerosene was designed to verify the simplified mechanism, and the temperature and gascomponent concentrations in the axial and radial directions at different heights were measured. The experimental re-sults revealed that the reaction temperature and the CO2 concentration increased first and then decreased across thea：,：ial positions, but on the contrary for the O2 concentration. The temperature and the O2 concentration distributionsof experimental results are in good agreement with that of numerical simulation results for the 62-step simplifiedreactions, and the CO2 concentration distribution is in general agreement with the numerical data. But the 38-stepsimplified reactions can only predict the change trend for the important parameters which are mentioned *** the contrastive analysis for these two kinds of simplified reactions, the 62-step reactions can more accuratelysimulate the combustion characteristics of RP-3 kerosene. Aud n-decane can be used as a one-component surrogatefuel for RP-3 aviation kerosene.

关键词： Sensitivity analysis Simplified mechalfism n-Decane Bunsen burner Gas component

Effect of Multi-Pass Equal Channel Angular Pressing on the Microstructure and Mechanical Properties of a Heterogeneous Mg_(88)Y_8Zn_4 Alloy

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Journal of Materials Science & Technology 2016年第12期32卷 1274-1281页

作者： Huan Liu Zhaojun Cheng Kai yan Jingli yan Jing Bai jinghua Jiang Aibin Ma College of Mechanics and Materials Hohai University Ocean and Coastal Engineering Research Institute Hohai University College of Mechanical Engineering Yangzhou University Jiangsu Key Lab of Advanced Metallic Materials College of Materials Science and EngineeringSoutheast University

The microstructure evolutions and mechanical properties of a heterogeneous Mg88Y8Zn4（in at.%） alloy during multi-pass equal channel angular pressing（ECAP） were systematically investigated in this *** results show that four phases,i.e.α-Mg,18 R long period stacking ordered（LPSO） phase,Mg24Y5 and Y-rich phase,are present in cast *** ECAP,dynamic recrystallization（DRX） occurs and the diameter of DRXedα-Mg grains decreases to 0.8 μ***,precipitation of lamellar 14 H LPSO structure is developed withinα-Mg *** the refinement of α-Mg grains and precipitation of 14 H LPSO contribute to the increase in micro-hardness from 98 HV to 135 HV for α-*** addition,a simplified model describing the evolution of 18 R LPSO phase is established,which illustrates that 18 R undergoes a four-step morphological evolution with increasing strains during ECAP,*** lath → bent lath → cracked lath → smaller *** test results indicate that the alloy has been markedly strengthened after multi-pass ECAP,and the main reason for the significantly enhanced mechanical properties could be ascribed to the DRXed α-Mg grains,newly precipitated 14 H lamellas,18 R kinking and refined 18 R particles.

关键词： Magnesium alloys Equal channel angular pressing (ECAP) Long period stacking ordered (LPSO) phase Microstructure Mechanical property

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涩北气田开发指标预测研究中的应用

内蒙古石油化工 2002年第2期28卷 200-201页

作者：闫静华张林艳杨卫东杨昌华中原油田分公司勘探开发科学研究院中原油田分公司采油二厂中原油田分公司采油工程技术研究院

影响气田开发效果因素众多。本文主要根据气田地质特征 ,结合气藏工程论证结果 ,针对不同的采气速度 ,井距 ,井口限压 ,射孔方式等因素展开研究 ,分析其对气田开发的影响程度。

关键词：涩北气田开发指标预测研究应用数值模拟气藏网格系统黑油模型