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AI Enabled Wireless Communications with Real Channel Measurements:Channel Feedback

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Journal of Communications and Information Networks 2020年第3期5卷 310-317页

作者： Jiajia Guo Xiangyi Li Muhan Chen peiwen Jiang Tingting Yang Weiming Duan Haowen Wang Shi Jin Quan Yu National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China Peng Cheng Laboratory Shenzhen 518000China Laboratory of Broadband Wireless Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 201800China

Artificial intelligence(AI)has shown great potential in wireless ***-empowered communication algorithms have beaten many traditional algorithms through ***,the existing works just use the simulated datasets to train and test the algorithms,which can not represent the power of AI in practical communication ***,Peng Cheng Laboratory holds an AI competition,National Artificial Intelligence Competition(NAIC):AI+wireless communications,in which one of the topics is AI-empowered channel feedback system design using practical *** this paper,we give a baseline neural network design,QuanCsiNet,for this competition,and the details of the channel *** shows excellent performance on channel feedback and the complexity of the neural networks is also given.

关键词： NAIC artificial intelligence CSI feedback channel measurements

Hexagonal boron nitride:A metal-free catalyst for deep oxidative desulfurization of fuel oils

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Green Energy & Environment 2020年第2期5卷 166-172页

作者： peiwen Wu Linjie Lu Jing He Linlin Chen Yanhong Chao Minqiang He Fengxia Zhu Xiaozhong Chu Huaming Li Wenshuai Zhu School of Chemistry and Chemical Engineering Insitute for Energy ResearchJiangsu UniversityZhenjiang212013China School of the Environment and Safety Engineering Jiangsu University212013China School of Chemistry and Chemical Engineering Huaiyin Normal UniversityHuaian223300China

Oxidative desulfurization(ODS)has been proved to be an efficient strategy for the production of clean fuel *** metal-based materials have been employed as excellent ODS catalysts,but being hindered by their high-cost and potential secondary *** this work,we employed graphene analogous hexagonal boron nitride(h-BN)as a metal-free catalyst for ODS with hydrogen peroxide(H2O2)as the *** h-BN catalyst was characterized and proved to be a few-layered structure with relatively high specific surface *** h-BN catalyst showed a 99.4%of sulfur removal in fuel oil under the optimized reaction ***,the h-BN can be recycled for 8 times without significant decrease in the catalytic *** mechanism analysis found that it is the boron radicals in h-BN activated H2O2 to generate·OH species,which can readily oxidize sulfides to corresponding sulfones for *** work would provide another choice in choosing metal-free catalysts for ODS.

关键词： Boron nitride Metal-free Oxidation Deep desulfurization Fuel oils

3D-printing of integrated spheres as a superior support of phosphotungstic acid for deep oxidative desulfurization of fuel

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Journal of Energy Chemistry 2020年第6期29卷 91-97,I0004页

作者： Jie Zhu peiwen Wu Linlin Chen Jing He Yingcheng Wu Chao Wang Yanhong Chao Linjie Lu Minqiang He Wenshuai Zhu Huaming Li School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013JiangsuChina Zhenjiang Sandi New Materials Co. Ltd.Zhenjiang 212013JiangsuChina School of the Environment and Safety Engineering Institute of Environmental Health and Ecological SecurityJiangsu UniversityZhenjiang 212013JiangsuChina

Construction of catalysts with integral structure for oxidative reaction process is an essential promotion to catalysts in industrial *** this work,a 3D printing method was employed to prepare 3D printed spheres(3D-PSs),followed by carbonization to form 3D carbon spheres(3D-CSs).Then,a 3D-CSs supported phosphotungstic acid(HPW/3D-CSs)was prepared for deep oxidative *** with traditional powder catalysts,the as-prepared catalyst is easy to be operated and separated from oil *** supported catalyst possesses excellent catalytic performance and the removal of DBT,4-MDBT and 4,6-DMDBT in fuel oil,reaching^100%of sulfur *** effects of various experimental parameters on desulfurization efficiency were considered to optimize reaction ***,the catalyst shows excellent thermal and chemical stability,with no obvious decrease in desulfurization activity after 5 ***–MS analysis indicates DBT sulfone was the solely oxidized product of DBT.

关键词： 3D printing Integrated spheres Supported catalyst Oxidative desulfurization

Stable Au nanoparticles confined in boron nitride shells for optimizing oxidative desulfurization

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Nano Research 2023年第10期16卷 12076-12083页

作者： Linjie Lu Jing He peiwen Wu Yang Sun Mingqing Hua Peng Cui Wenshuai Zhu Huaming Li Zhichang Liu Chunming Xu School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China College of Chemical Engineering and Environment State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum(Beijing)Beijing 102249China

Supported gold(Au)nanocatalysts have long played an important role in numerous heterogeneous ***,the dominant difficulty of poor thermodynamic stability hampers its practical ***,a core–shell structured Au nanocatalyst with Au nanoparticles(NPs)confined in boron nitride(BN)shells is proposed for enhanced thermodynamic *** two-dimensional porous structure of BN not only functions as a physical separator for the sintering resistance of Au NPs,but also provides a microchannel for catalytic reaction ***,owing to the confinement effect,a strengthened interaction between well-designed Au NPs and the BN can be expected,which further boosts the stability and catalytic *** experiments show that a proper BN shell thickness is important to maintain the balance between the sintering resistance and catalytic activity.A significantly boosted performance of 97.2%conversion in oxidative desulfurization(ODS)was obtained with a proper number of BN coating layers,outperforming the one with a thicker BN ***,the recyclability of the prepared catalyst was investigated with no obvious decrease in catalytic performance after 10 runs,greatly higher than that without a BN shell,suggesting excellent durability.

关键词： oxidative desulfurization core–shell boron nitride Au nanocatalyst confinement effect

Alternative splicing patterns of doublesex reveal a missing link between Nix and doublesex in the sex determination cascade of Aedes albopictus

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Insect Science 2021年第6期28卷 1601-1620页

作者： Binbin Jin Yijie Zhao Yunqiao Dong peiwen Liu Yan Sun Xiaocong Li Xin Zhang Xiao-Guang Chen Jinbao Gu Department of Pathogen Biology Guangdong Provincial Key Laboratory of Tropical Disease ResearchSchool of Public HealthSouthern Medical UniversityGuangzhou510515China Reproductive Medical Centre of Guangdong Women and Children Hospital Guangzhou511442China

Sexual development in insects is regulated by a complicated hierarchical cascade of sex *** primary signals are diverse,whereas the central nexus doublesex(dsx)gene is relatively conserved within the ***(Stegomyia)albopictus is an important vector with an extensive worldwide *** previously reported that *** dsx(Aalbdsx)yields one male-(Aalbdsx^(M))and three female-specific isoforms(Aalbdsx^(F1-3));however,the spatiotemporal expression profiles and mechanisms regulating sex-specific alternative splicing require further *** this study,we demonstrated that the Aalbdsx^(M) messenger RNA(mRNA)represents the default pattern when analyzed in human foreskin fibroblasts and HeLa *** combined reverse transcription polymerase chain reaction with RNA immunoprecipitation using specific antibodies against tagged *** male-determining factor AalNix and confirmed that AalNix indirectly regulates dsx pre-mRNA and regulates its alternative *** the early embryo stage(0-2 and 4-8 h),maternal dsx^(F) and default splicing dsx^(M) were detected in both sexes;the expression of dsx^(M) then decreased until sufficient AalNix transcripts accumulated in male embryos at 20-24 *** findings suggest that one or more potential dsx splicing enhancers can shift dsx^(M) to dsx^(F) in both sexes;however,the presence of Nix influences the function of this unknown splicing enhancer and ultimately leads to the formation of dsx^(M) in ***,our results provide important insight into the regulatory mechanism of dsx alternative splicing in the mosquito.

关键词： Aedes albopictus alternative splicing Doublesex\mosquito control sex determination

Preparation of FePt magnetic nanodot arrays by nanosphere lithography

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Chinese Science Bulletin 2007年第8期52卷 1125-1128页

作者： wu peiwen FANG YiKun TUO XinLin WANG XiaoGong HAN BaoShan YUAN Jun Laboratory of Advanced Materials Department of Materials Science and Engineering Tsinghua University Beijing 100084 China National Centre for Electron Microscopy (Beijing) Tsinghua University Beijing 100084 China State Key Laboratory of Magnetism Beijing National Laboratory for C0ndensed Physics Instiiute of Physics Chinese Academy of Sciences Beijing 100080 China Department oi Chemical Engineering Tsinghua University Beijing 100084 China

Magnetic FePt nanodot arrays are promising candidates for making quantum magnetic recording disk. Here we introduce a hybrid method of FePt nanodot array fabrication through nanosphere lithography. This method combines the advantages of both top-down and bottom-up approaches and does not re- quire expensive equipment nor complicated processing *** size of magnetic FePt nanodots prepared can be as small as 40 nm.

关键词： FePt磁性纳米点阵列制备纳米球平版印刷术

Optimization of Rolling Process for Bi(2223)/Ag Superconducting Tapes by a Statistical Method

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Rare Metals 2001年第1期20卷 66-68页

作者： Xuefeng Li, peiwen Hua, Wenquan Wang, Qijian Jin, Yiru Zhou, Guansen Yuan (General Research Institute for Nonferrous Metals, Beijing 100088, China) Gen Res Inst NonFerrous Met Beijing 100088 Peoples R China

Ag-sheathed (Bi,Pb)(2)SoCa(2)Cu(3)O(x) tapes were prepared by the powder-in-tube method. The influences of rolling parameters on superconducting characteristics of Bi(2223)/Ag tapes were analyzed qualitatively with a statistical method. The results demonstrate that roll diameter and reduction per pass significantly influence the properties of Bi(2223)/Ag superconducting tapes while roll speed does less and working friction the least. An optimized rolling process was therefore achieved according to the above results.

关键词： Bi(2223)/Ag multifilamentary tapes rolling process statistical method optimization

Fabrication of oxygen-defective tungsten oxide nanorods for deep oxidative desulfurization of fuel

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Petroleum Science 2018年第4期15卷 849-856页

作者： Haibin Sun peiwen Wu Jing He Mingyang Liu Linhua Zhu Fengxia Zhu Guangying Chen Minqiang He Wenshuai Zhu School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu University Key Laboratory of Tropical Medicinal Plant Chemistry of Education Hainan Normal University School of Chemistry and Chemical Engineering Huaiyin Normal University

Owing to the increasingly serious environmental issues caused by the sulfur burnt in fuel, desulfurization has become an important topic. In this work, an amphiphilic oxygen-defective tungsten oxide was synthesized by a colloidal chemistry method. The amphiphilic property and oxygen defects were well characterized, and the structure of the oxygen-defective tungsten oxide catalyst was investigated. In addition, the catalyst was employed in oxidative desulfurization system of fuel,and deep desulfurization was achieved. It was found that the very high oxidative desulfurization performance of oxygendefective tungsten oxide catalyst resulted from both the amphiphilic property and oxygen defects. This work can provide a strategy for preparation of highly active metal oxide catalysts with oxygen defects in oxidative desulfurization reaction of fuel.

关键词： Tungsten oxide Oxygen vacancies Oxidative desulfurization Amphiphilic catalyst

Towards a Leprosy-Free Country--China,2011−2018

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China CDC weekly 2020年第4期2卷 49-52页

作者： Meiwen Yu peiwen Sun Le Wang Hongsheng Wang Heng Gu Xiangsheng Chen Institute of Dermatology Chinese Academy of Medical Sciences&Peking Union Medical College&National Center for Leprosy ControlChinese Center for Disease Control and PreventionNanjingJiangsuChina.

Summary What is already known about this topic?Leprosy is a chronic infectious disease that is endemic in several *** of leprosy has had targets set by World Health Organization’s(WHO)Global Strategy 2016–2020 and by China through a national leprosy-control plan(2011–2020).What is added by this report?Data from the Leprosy Management Information System in China was analyzed and showed a national prevalence of 0.178 per 100,000 and detection rate of 0.037 per 100,000 residents in *** addition,all the main targets for 2020 have been met by 2018 except for the proportion of counties or cities to reach a prevalence of less than 1/100,000 and the proportion of children cases with grade 2 disability(G2D).What are the implications for public health practice?There are still challenges remaining to close the gaps between current progress and the targets set forth by the WHO and ***,lessons learned in China in developing and implementing the national program may be invaluable for future plans to achieve and sustain elimination of leprosy at global and country level.

关键词： Lep elimination counties