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聚氯乙烯 2011年第8期39卷 12-14页

作者：李欣平齐念先贾俊乐中国平煤神马集团氯碱发展有限责任公司河南平顶山467000

介绍了采用冷冻法替代硫酸法用于氯乙烯转化工序混合气脱水的改造过程,改造后系统运行平稳,保证了混合气的脱水效果,并节省了运行费用。

关键词：氯乙烯混合气脱水硫酸法冷冻法改造

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少人化机坪交通系统静态热点识别方法

交通与运输 2025年第1期41卷 49-54页

作者：祁美云穆海墙朱新平中国民用航空飞行学院广汉618307

为解决少人化机坪交通系统冲突热点问题,提出相应的机坪交通系统静态热点识别方法。首先,设计少人化机坪交通系统内各个活动目标的优先级别,提出机坪交通系统节点-路段模型的构建方法;其次,按照冲突对象及冲突发生的场景划分冲突类型,... 详细信息

为解决少人化机坪交通系统冲突热点问题,提出相应的机坪交通系统静态热点识别方法。首先,设计少人化机坪交通系统内各个活动目标的优先级别,提出机坪交通系统节点-路段模型的构建方法;其次,按照冲突对象及冲突发生的场景划分冲突类型,设计各类冲突对象之间的冲突判定方法,提出少人化机坪交通系统的静态热点识别方法;最后,以某机场部分区域未来少人化场景为例,对所给静态热点识别方法的科学性和有效性进行验证,以期为研究少人化机坪交通系统冲突热点提供新范式,以及为后续研究少人化机坪交通系统动态热点识别提供支撑。

关键词：少人化机坪交通系统节点-路段模型冲突判定方法冲突热点静态热点识别

Global Overview and Insights on Infodemiology and Infodemic Management

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China CDC weekly 2023年第26期5卷 579-583页

作者： Mingfan Pang Yichi Zhang Siyue Guo xinping Yang Xiaopeng qi Center for Global Public Health Chinese Center for Disease Control and PreventionBeijingChina

The coronavirus disease 2019(COVID-19)pandemic has underscored the global challenge of managing *** a situation report published on February 2,2020,the World Health Organization(WHO)observed that the disease outbreak and response were accompanied by an extensive infodemic,complicating the process for individuals to identify trustworthy sources and obtain reliable guidances during such a critical period(1).

关键词： demic managing guidance

Optimized design of the pneumatic precision seed-metering device for carrots

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International Journal of Agricultural and Biological Engineering 2023年第6期16卷 134-147,F0003页

作者： Dinghao Feng xinping Sun Hua Li Xindan qi Yongjian Wang Samuel Mbugua Nyambura College of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province Nanjing Agricultural UniversityNanjing 210031China College of Engineering Nanjing Agricultural UniversityNanjing 210031China CSSC Jiangnan Shipyard(Group)Co. Shanghai 201913China

The small size, light weight, irregular shape, and impurities that characterize seed groups increase clogging tendencies in the traditional seed-metering device thereby making it difficult to achieve high-speed precision seeding. A pneumatic seed-metering device with good seed-filling performance for carrot was designed in this study. By analyzing the movement state of seeds in the device under the theoretical condition, it was concluded that the minimum critical negative pressure value of air chamber was 0.32 kPa, which provided a theoretical basis for simulation and testing. ANSYS 17.0 Software was used to simulate the shape of the seeding plate hole. By comparing the pressure, air flow stability between the suction surface and the plug removal surface of the convection field, it was concluded that the conical hole was optimal. A bench verification test was conducted on the device. The average qualified rate, missing rate, and replaying rate were 81.48%, 4.07%, and 14.45%, respectively, which provided a strong reference for the design of carrot precision seed-metering device.

关键词： seed-metering device carrot precision seeding bench verification test

An advanced low-cost cathode composed of graphene-coated Na_(2.4)Fe_(1.8)(SO_(4))_(3) nanograins in a 3D graphene network for ultra-stable sodium storage

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Journal of Energy Chemistry 2021年第3期30卷 564-570页

作者： Yongjin Fang qi Liu Xiangming Feng Weihua Chen xinping Ai Liguang Wang Liang Wang Zhiyuan Ma Yang Ren Hanxi YangYuliang Cao College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds&Materials of Ministry of EducationWuhan UniversityWuhan 430072HubeiChina Department of Physics City University of Hong KongTat Chee AvenueKowloonHong KongChina College of Chemistry and Molecular Engineering Zhengzhou UniversityZhengzhou 450001HenanChina X-ray Science Division Advanced Photon SourceArgonne National Laboratory9700 South Cass AvenueLemontIL 60439USA

Iron-based electrodes have attracted great attention for sodium storage because of the distinct cost ***,exploring suitable iron-based electrodes with high power density and long duration remains a big ***,a spray-drying strategy is adopted to construct graphene-coated Na_(2.4)Fe_(1.8)(SO_(4))_(3) nanograins in a 3D graphene microsphere *** unique structural and compositional advantages endow these electrodes to exhibit outstanding electrochemical properties with remarkable rate performance and long cycle *** analyses further explain the outstanding electrochemical properties from the structural aspect.

关键词： Na_(2.4)Fe_(1.8)(SO_(4))_(3) Polyanions Spray-drying Cathode Sodium-ion batteries

Mobility Trends and Effects on the COVID-19 Epidemic-Hong Kong,China

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China CDC weekly 2021年第8期3卷 159-161页

作者： Rongna Zhang Zuoru Liang Mingfan Pang xinping Yang Jiewen Wu Yuansheng Fang Hanran Ji Xiaopeng qi Chinese Center for Disease Control and Prevention BeijingChina.

Summary What is already known about this topic?Several outbreaks of coronavirus disease 2019(COVID-19)occurred in Hong Kong in 2020,and the response had varied results based on the strength of policy measures and on compliance of the *** is added by this report?By analyzing data of COVID-19 cases in Hong Kong,combined with the Google Mobility Trends and Oxford COVID-19 Government Response Tracker.

关键词： policy COV cases

Optimization of a three-row air-suction Brassica chinensis precision metering device based on CFD-DEM coupling simulation

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International Journal of Agricultural and Biological Engineering 2023年第3期16卷 130-142页

作者： xinping Sun Hua Li Xindan qi Dinghao Feng Jianqi Zhou Yongjian Wang Samuel Mbugua Nyambura Xiaoyu Zhang Xi Chen College of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province Nanjing Agricultural UniversityNanjing 210031China College of Engineering Nanjing Agricultural UniversityNanjing 210031China Jiangsu Xuzhou Transportation Planning and Design Institute Xuzhou 221000China

This study aimed to optimize a three-row air-suction Brassica chinensis precision metering device to improve the low seeding *** 17.0 Software was used to analyze the effect of different numbers of suction holes and different suction hole structures on the airflow *** was found that a suction hole number of 60 was beneficial to the flow field stability and a conical hole structure was beneficial to the adsorption of ***-Behnken design experiments were carried out with negative pressure,rotational speed,and hole diameter as the experimental *** optimal parameter combination was achieved when the negative pressure was 3.96 kPa,the rotational speed of the seeding plate was 1.49 rad/s and the hole diameter was 1.10 *** qualification rate of inner,middle,and outer rings were 87.580%,90.548%,and 90.117%,respectively,and the miss seeding rate of inner,middle,and outer rings were 10.915%,7.139%,and 5.920%,respectively.

关键词： Brassica chinensis metering device airflow field Box-Behnken design

Weekly Assessment of the COVID-19 Pandemic and Risk of Importation--China, April 1, 2020

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China CDC weekly 2020年第14期2卷 251-257页

作者： Mingfan Pang Zuoru Liang xinping Yang Yufei Wang Zhongjie Li Yanping Zhang Ke Lyu Guoqing Shi Lei Zhou Xiaopeng qi Xinhua Li Xiaoping Dong Chinese Center for Disease Control and Prevention BeijingChina

Along with the announcement of COVID-19 as a global pandemic by the World Health Organization(WHO)on March 12,2020,COVID-19 appeared to be spreading rapidly around the *** 10:00 CET on April 1,2020,a total of 740,995 confirmed cases and 37,277 deaths were reported from 204 foreign countries and regions on 6 continents plus the Diamond Princess international cruise ship;among them,161 countries and regions had local ***,the WHO website reported 23,791 confirmed COVID-19 cases from 18 countries and regions in the Western Pacific(excluding China),464,212 cases from 60 countries and regions in Europe,5,175 cases from 10 countries and regions in South-East Asia,54,281 cases from 21 countries and regions in the Eastern Mediterranean,188,751 cases from 51 countries and regions in the Americas,and 4,785 cases from 44 countries and regions in Africa(1).

关键词： America fir Eastern

A Game Analysis on Technology Alliance of Tech-typed Small and Medium-sized Enterprises

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Chinese Business Review 2004年第7期3卷 76-81页

作者： Cuihua Wu Jingyu qi xinping Wang qingjie Chen Mailbox 1605 （Ph.D. candidate） Management School of Xi＇an Jiaotong University Xianning West Road 28# Xi＇an Shaanxi province P. R. China 710049 Department of Finance Economic ＆ Trade of Capital University P. R. China School of Xi＇an Jiaotong University Management School of Xi＇an Jiaotong University

As an innovation mode of organization, technology alliance has being increasingly paid more attention to by more and more small and medium-sized enterprises （SME）. In this paper, on the basis of analyzing the theory and practice meaning of the technology alliance, cooperative game method is used to analyze the forming process of the cooperative mechanism, and it points out that cooperation will make both sides get the largest benefits.

关键词： Tech-typed small and medium-sized enterprises technology alliance cooperative game

π-Pimer,π-Dimer,π-Trimer,and 1Dπ-Stacks in a Series of Benzene Triimide Radical Anions:Substituent-Modulated π Interactions and Physical Properties in Crystalline State

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CCS Chemistry 2023年第6期5卷 1343-1352页

作者： De-Hui Tuo Shuxuan Tang Pengfei Jin Jikun Li xinping Wang Chuang Zhang Yu-Fei Ao qi-qiang Wang De-Xian Wang BeijingNational Laboratory for Molecular Sciences CASKey Laboratory of MolecularRecognition andFunctionInstitute of ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049 State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023 Beijing National Laboratory for Molecular Sciences Key Laboratory of PhotochemistryInstitute of ChemistryChinese Academy of SciencesBeijing 100190

We herein present the efficient syntheses,crystal structures,and physical properties of a series of novel benzene triimide(BTI)radical anions,emphasizing the relationship between molecular structure with spin–spin intermolecular interactions and physical properties in the crystalline *** radical crystals were preparedby reducingvarious substitutedBTIs(1)with cobaltocene(CoCp2),followed by sequential crystallization *** isolable radical species,that is,neutral molecule-radical anion pair(2)and monoradical species(3),were obtained from BTIs bearing small substituents(ethyl and propyl),while for those bearing larger substituents(butyl,hexyl,and benzyl)sole monoradicals(3)were *** radical species showed diverse intermolecular stackings in the crystalline state referred to asπ-pimer,π-dimer,alternatingπ-trimer,and one-dimensional(1D)slippedπ-stacks depending on the length and size of the *** spin–spin interactions arising from the substituent-tuned radical packings were demonstrated by electron spin resonance(ESR)*** structure–property relationshipwas studied in terms of magnetism and *** radicalπ-pimers andπ-stacks with effective charge transport exhibited paramagnetic property and conductivity feasibly at room temperature,whileπ-dimers andπ-trimers featuring thermally populated spin-triplet stateswere antiferromagnetic and nonconductive due to their strong radical–radical pairing effect.

关键词： radical pimer radical dimer anion radical benzene triimide π-πstacking