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| 1 | Age-related rhesus macaque models of COVID-19显示文摘Background:Since December 2019,an outbreak of the Corona Virus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus(SARS-CoV-2)in Wuhan,China,has become a public health emergency of international concern.The high fatality of aged cases caused by SARS-CoV-2 was a need to explore the possible age-related phenomena with non-human primate models.Methods:Three 3-5 years old and two 15 years old rhesus macaques were intratracheally infected with SARS-CoV-2,and then analyzed by clinical signs,viral replication,chest X-ray,histopathological changes and immune response.Results:Viral replication of nasopharyngeal swabs,anal swabs and lung in old monkeys was more active than that in young monkeys for 14 days after SARS-CoV-2 challenge.Monkeys developed typical interstitial pneumonia characterized by thickened alveolar septum accompanied with inflammation and edema,notably,old monkeys exhibited diffuse severe interstitial pneumonia.Viral antigens were detected mainly in alveolar epithelial cells and macrophages.Conclusion:SARS-CoV-2 caused more severe interstitial pneumonia in old monkeys than that in young monkeys.Rhesus macaque models infected with SARS-CoV-2 provided insight into the pathogenic mechanism and facilitated the development of vaccines and therapeutics against SARS-CoV-2 infection. | Pin Yu Feifei Qi Yanfeng Xu Fengdi Li Peipei Liu Jiayi Liu Linlin Bao Wei Deng Hong Gao Zhiguang Xiang Chong Xiao Qi Lv Shuran Gong Jiangning Liu Zhiqi Song Yajin Qu Jing Xue Qiang Wei Mingya Liu Guanpeng Wang Shunyi Wang Haisheng Yu Xing Liu Baoying Huang Wenling Wang Li Zhao Huijuan Wang Fei Ye Weimin Zhou Wei Zhen Jun Han Guizhen Wu Qi Jin Jianwei Wang Wenjie Tan Chuan Qin | 2020 | Animal Models and Experimental Medicine2020，3，1： | 22 |
| 2 | Robust Beamforming for Secured Wireless Power Transfer in MIMO Magnetic Resonant Coupling System:A Probabilistic Approach显示文摘Wireless power transfer(WPT) to support mobile and portable devices is an emerging wireless technique.Among all kinds of approaches,magnetic resonance coupling(MRC) is an excellent one for mid-range WPT,which provides better mobility,flexibility,and convenience due to its simplicity in hardware implementation and longer transmission distances.In this paper,we consider an MRCWPT system with multiple power transmitters,one intended power receiver and multiple unintended power receivers.We investigate the probabilistic robust beamforming designs and provide efficient algorithms to achieve the local optimums under two different criteria,i.e.,total source power minimization problem and min-max unintended receiving power restriction problem.As the problems are quite typical in robust design situations,our proposed robust beamformers can be conveniently applied to other probabilistic robust design problems,thus reduce the complexity as well as improve the beamforming performance.Numerical results demonstrate that the proposed algorithms can significantly improve the performance as well as the robustness of the WPT system. | Ling Xing Kaikai Deng Feifei Gao | 2019 | China Communications2019，16，1： | 2 |
| 3 | Pulse-width-induced polarization enhancement of optically pumped N-V electron spin in diamond显示文摘The nitrogen-vacancy(N-V)center in diamond is a widely used platform for quantum information processing and sensing.The electron-spin state of the N-V center could be initialized,read out optically,and manipulated by resonate microwave fields.In this work,we analyze the dependence of electron-spin initialization on widths of laser pulses.We build a numerical model to simulate this process and to verify the simulation results in experiments.Both simulations and experiments reveal that shorter laser pulses are helpful to the electron-spin polarization.We therefore propose to use extremely short laser pulses for electron-spin initialization.In this new scheme,the spin-state contrast could be improved about 10%in experiments by using laser pulses as short as 4 ns in width.Furthermore,we provide a mechanism to explain this effect,which is due to the occupation time in the meta-stable spin-singlet states of the N-V center.Our new scheme is applicable in a broad range of N-V-based applications in the future. | YUMENG SONG YU TIAN ZHIYI HU FEIFEI ZHOU TENGTENG XING DAWEI LU BING CHEN YA WANG NANYANG XU JIANGFENG DU | 2020 | Photonics Research2020，8，8： | 1 |
| 4 | Cloning,expression,and characterization of a D-psicose 3-epimerase from Clostridium cellulolyticum H 10显示文摘 | Wanmeng Mu Feifei Chu Qiangchao Xing | 2011 | Journal of Agriculture and Food Chemistry2011，59，： | 1 |
| 5 | Cloning, expression,and characterization of a D-psicose 3-epimerase from Clostridium cellulolyticum H10 显示文摘 | Wanmeng Mu Feifei Chu Qiangchao Xing | 2011 | Journal of Agriculture and Food Chemistry2011，59，14： | 1 |
| 6 | Synergistic control of dual cross-linking strategy toward tailor-made hydrogels显示文摘Simple, efficient and accurate controllable systems for materials are becoming more essential, in response to the explosively growing demands in the fields of chemistry and material science. Herein, tailored hydrogels are explored depending on synergistic regulation of p H-responsive chemical networks with an 'on/off' function and physical networks with dynamic selfoptimized arrangement. Thiol-disulfide exchange reaction endows hydrogels with controlled architectures while hydrogen bondstrengthened 2-ureido-4[1H]-pyrimidinone(UPy) moieties contributes a significant increase in mechanical strengths. The integration of that dual cross-linking(DC) network ensures the hydrogels with customized structure and enhanced mechanical property. Such controllably strategy is universally applicable and will open a new avenue to flexibly fabricate desired hybrid hydrogels with distinctive features and functions for their potential applications. | Xueyu Dou Qingchen Cao Feifei Sun Yaqiang Wang Hufei Wang Hong Shen Fei Yang Xing Wang Decheng Wu | 2020 | Science China Chemistry2020，63，12： | 0 |
| 7 | Discovery of small-molecule activators of nicotinamide phosphoribosyltransferase(NAMPT)and their preclinical neuroprotective activity显示文摘The decline of nicotinamide adenine dinucleotide(NAD)occurs in a variety of human pathologies including neurodegeneration.NAD-boosting agents can provide neuroprotective benefits.Here,we report the discovery and development of a class of potent activators(NATs)of nicotinamide phosphoribosyltransferase(NAMPT),the rate-limiting enzyme in the NAD salvage pathway.We obtained the crystal structure of NAMPT in complex with the NAT,which defined the allosteric action of NAT near the enzyme active site.The optimization of NAT further revealed the critical role of K189 residue in boosting NAMPT activity.NATs effectively increased intracellular levels of NAD and induced subsequent metabolic and transcriptional reprogramming.Importantly,NATs exhibited strong neuroprotective efficacy in a mouse model of chemotherapy-induced peripheral neuropathy(CIPN)without any overt toxicity.These findings demonstrate the potential of NATs in the treatment of neurodegenerative diseases or conditions associated with NAD level decline. | Hong Yao Minghui Liu Leibo Wang Yumeng Zu Chou Wu Chenyu Li Ruoxi Zhang Haigen Lu Feifei Li Shuang Xi Shuangquan Chen Xuanyu Gu Tianya Liu Jie Cai Shirong Wang Maojun Yang Guo-Gang Xing Wei Xiong Lan Hua Yefeng Tang Gelin Wang | 2022 | Cell Research2022，32，6： | 0 |
| 8 | Effectiveness of Traditional Chinese Medicine on coronavirus disease 2019 in 92 patients:a retrospective study显示文摘OBJECTIVE:To investigate the antipyretic effect of early treatment with Traditional Chinese Medicine(TCM) on coronavirus disease 2019(COVID-19) patients.METHODS:We retrospectively analyzed 369 patients from January 26th,2020 to April 15th,2020,who had been diagnosed with COVID-19.Among 92 eligible cases,45 cases were identified as treatment group Ⅰ(n = 45) and 47 cases were identified as treatment group Ⅱ.Patients in the treatment group Ⅰ were treated with TCM herbal decoction within 5 d after admission.Patients in the treatment group Ⅱ were treated with TCM herbal decoction after the 6th admission day.The onset time of antipyretic effect,the antipyretic time,the time of negative oropharyngeal swab nucleic acid conversion,and the changes of cell count in blood routine test were compared.RESULTS:The treatment group Ⅰ showed shorter average antipyretic duration(4 vs 7 d;P < 0.05),and shorter average time for polymerase chain reaction(PCR) nucleic acid test results to turn negative(7 vs 11 d;P < 0.05) than the treatment group II.For patients(n = 54) with body temperature > 38 ℃,patients in the treatment group I had shorter median onset time of antipyretic effect than those in the treatment group Ⅱ(3 vs 4 d;P < 0.05).The absolute lymphocyte(LYMPH) count and absolute eosinophil(EOS) count on the 3rd day after admission and the neutrophil/lymphocyte ratio on the 6th day after admission of patients in the treatment group I were notably different from those in the treatment group Ⅱ at the same time point(P < 0.05).Based on Spearman’s rank correlation analysis,the change of body temperature on the 3rd day after admission was positively correlated with the increase of EOS count and the increase of EOS count and LYMPH counts on the 6th day after admission(P < 0.01).CONCLUSIONS:Early TCM intervention within 5 d after hospital admission shortened the onset time of antipyretic effect and fever duration of COVID-19 patients,reduced the time required for PCR test results to turn negative.Moreover,early TCM intervention also improved the results of inflammatory markers for COVID-19 patients.LYMPH and EOS counts can be used as indicators of TCM antipyretic effect. | XU Guihua CHEN Feifei ZHANG Wei WU Yingen CHEN Xiaorong SHI Kehua WANG Zhenwei SHI Miaoyan ZHANG Xing LU Yunfei YUAN Weian LYU Hua CHEN Xuan | 2023 | Journal of Traditional Chinese Medicine2023，43，3： | 0 |
| 9 | Two‑Dimensional Mesoporous Materials for Energy Storage and Conversion:Current Status,Chemical Synthesis and Challenging Perspectives显示文摘Two-dimensional(2D)mesoporous materials(2DMMs),defined as 2D nanosheets with randomly dispersed or orderly aligned mesopores of 2–50 nm,can synergistically combine the fascinating merits of 2D materials and mesoporous mate-rials,while overcoming their intrinsic shortcomings,e.g.,easy self-stacking of 2D materials and long ion transport paths in bulk mesoporous materials.These unique features enable fast ion diffusion,large specific surface area,and enriched adsorption/reaction sites,thus offering a promising solution for designing high-performance electrode/catalyst materials for next-generation energy storage and conversion devices(ESCDs).Herein,we review recent advances of state-of-the-art 2DMMs for high-efficiency ESCDs,focusing on two different configurations of in-plane mesoporous nanosheets and sandwich-like mesoporous heterostructures.Firstly,a brief introduction is given to highlighting the structural advantages(e.g.,tailored chemical composition,sheet configuration,and mesopore geometry)and key roles(e.g.,active materials and functional additives)of 2DMMs for high-performance ESCDs.Secondly,the chemical synthesis strategies of 2DMMs are summarized,including template-free,2D-template,mesopore-template,and 2D mesopore dual-template methods.Thirdly,the wide applications of 2DMMs in advanced supercapacitors,rechargeable batteries,and electrocatalysis are discussed,enlightening their intrinsic structure–property relationships.Finally,the future challenges and perspectives of 2DMMs in energy-related fields are presented. | Jieqiong Qin Zhi Yang Feifei Xing Liangzhu Zhang Hongtao Zhang Zhong‑Shuai Wu | 2023 | Electrochemical Energy Reviews2023，6，1： | 0 |
| 10 | 5G ENTERING INTO A NEW ERA显示文摘The ever increasing wireless data services, such asimaging, video, audio, multimedia, etc., have de-mands for the very high speed wireless communicationsand network, which are unfortunately a bottleneck whencombining with the wireline core network. Users' arenow expecting high quality of experience with low-costdevices, ubiquitous connectivity, energy efficiency, highreliability, or even ultra-low latency if a vehicle terminalis applied. | Feifei Gao Changle Li Jun Fang Kaizhi Huang Zhi Quan Chengwen Xing Jianhua Zhang Zhongshan Zhang Liqiang Zhao Yulong Zou | 2017 | China Communications2017，14，12： | 0 |
| 11 | A refined risk explicit interval linear programming approach for optimal watershed load reduction with objective-constraint uncertainty tradeoff analysis显示文摘为了提高分水岭的有效性,装载减小决策,风险明确的间隔线性编程(REILP ) 途径在以前的研究被开发到地址决定风险和系统回来。然而, REILP 缺乏能力在客观功能和限制分析在风险之间的折衷。因此,一个精制 REILP 模型在这研究被建议进一步为最佳的分水岭负担减小提高 REILP 途径的决定支持能力。由介绍一个折衷因素() 进全部的风险功能,精制 REILP 能导致在与客观功能和限制联系的风险之间的不同妥协。建议模型用为基翁海湖分水岭处理基于无常的最佳的负担减小决策的案例研究被说明,中国。有不同的值的一条风险折衷曲线作为一个更灵活的平台被介绍给决定制造者支持决定明确的表达。标准、精制的 REILP 模型的结果在 11 个渴望层次下面被比较。结果证明由使用精制 REILP,获得在标准 REILP,但是与更低的客观风险作为那保存一样的限制风险的答案是可能的,它能为决定制造者提供更多的有效指导。 | Pingjian YANG Feifei DONG Yong LIU Rui ZOU Xing CHEN Huaicheng GUO | 2016 | Frontiers of Environmental Science & Engineering2016，10，1： | 0 |
| 12 | Nanostructured BiVO4 Derived from Bi-MOF for Enhanced Visible-light Photodegradation显示文摘BiVO4,a promising visible-light responding photocatalyst,has aroused extensive research interest because of inexpensiveness and excellent chemical stability.However,its main drawback is the poor photoinduced charge-transfer dynamics.Building nanostructures is an effective way to tackle this problem.Herein,we put forward a new method to prepare nanostructured BiVO4 from Bi-based metal-organic frameworks[Bi-MOF(CAU-17)]precursor.The as-prepared material has a rod-like morphology inherited from the Bi-MOF sacrificial template and consists of small nanoparticle as building blocks.Compared with its counterparts prepared by conventional methods,MOF-derived nanostructured BiVO4 shows better light absorption ability,narrower bandgap,and improved electrical conductivity as well as reduced recombination.Consequently,BiVO4 nanostructure demonstrates high photocatalytic activity under visible light towards the degradation of methylene blue.Methylene blue can be degraded up to 90%within 30 min with a reaction rate constant of 0.058 min-1.Moreover,the cycling stability of the catalyst is excellent to withstand unchanged degradation efficiency for at least 5 cycles. | CHEN Jianfei CHEN Xiaoyu ZHANG Xing YUAN Yao BI Ruyi YOU Feifei WANG Zumin YU Ranbo | 2020 | Chemical Research in Chinese Universities2020，36，1： | 0 |
| 13 | Phase engineering of Ni-Mn binary layered oxide cathodes for sodiumion batteries显示文摘Nickel-manganese binary layered oxides with high working potential and low cost are potential candidates for sodium-ion batteries,but their electrochemical properties are highly related to compositional diversity.Diverse composite materials with various phase structures of P3,P2/P3,P2,P2/O3,and P2/P3/O3 were synthesized by manipulating the sodium content and calcination conditions,leading to the construction of a synthetic phase diagram for Na_(x)Ni_(0.25)Mn_(0.75)O_(2)(0.45≤x≤1.1).Then,we compared the electrochemical characteristics and structural evolution during the desodiation/sodiation process of P2,P2/P3,P2/03,and P2/P3/O3-Na_(x)Ni_(0.25)Mn_(0.75)O_(2).Among them,P2/P3-Na0.75Ni0.25Mn0.75O2exhibits the best rate capability of 90.9 mA h g^(-1)at 5 C,with an initial discharge capacity of 142.62 mA h g^(-1)at 0.1 C and a capacity retention rate of 78.25%after 100 cycles at 1 C in the voltage range of 2-4.3 V.The observed superior sodium storage performance of P2/P3 hybrids compared to other composite phases can be attributed to the enhanced Na^(+)transfer dynamic,reduction of the Jahn-teller effect,and improved reaction reversibility induced by the synergistic effect of P2 and P3 phases.The systematic research and exploration of phases in Na_(x)Ni_(0.25)Mn_(0.75)O_(2)provide new sights into high-performance nickel-manganese binary layered oxide for sodium-ion batteries. | Feifei Hong Xin Zhou Xiaohong Liu Guilin Feng Heng Zhang Weifeng Fan Bin Zhang Meihua Zuo Wangyan Xing Ping Zhang Hua Yan Wei Xiang | 2024 | Journal of Energy Chemistry2024，91，4： | 0 |
| 14 | Hierarchically Structured Nb_(2)O_5 Microflowers with Enhanced Capacity and Fast-Charging Capability for Flexible Planar Sodium Ion Micro-Supercapacitors显示文摘Planar Na ion micro-supercapacitors(NIMSCs) that offer both high energy density and power density are deemed to a promising class of miniaturized power sources for wearable and portable microelectron-ics. Nevertheless, the development of NIMSCs are hugely impeded by the low capacity and sluggish Na ion kinetics in the negative electrode.Herein, we demonstrate a novel carbon-coated Nb_(2)O_5 microflower with a hierarchical structure composed of vertically intercrossed and porous nanosheets, boosting Na ion storage performance. The unique structural merits, including uniform carbon coating, ultrathin nanosheets and abun-dant pores, endow the Nb_(2)O_5 microflower with highly reversible Na ion storage capacity of 245 mAh g^(-1) at 0.25 C and excellent rate capability.Benefiting from high capacity and fast charging of Nb_(2)O_5 microflower, the planar NIMSCs consisted of Nb_(2)O_5 negative electrode and activated car-bon positive electrode deliver high areal energy density of 60.7 μWh cm^(-2),considerable voltage window of 3.5 V and extraordinary cyclability. Therefore, this work exploits a structural design strategy towards electrode materials for application in NIMSCs, holding great promise for flexible microelectronics. | Jiaxin Ma Jieqiong Qin Shuanghao Zheng Yinghua Fu Liping Chi Yaguang Li Cong Dong Bin Li Feifei Xing Haodong Shi Zhong‑Shuai Wu | 2024 | Nano-Micro Letters2024，16，4： | 0 |
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