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Rice FLOURY ENDOSPERM 18 encodes a pentatricopeptide repeat protein required for 5′ processing of mitochondrial nad5 messenger RNA and endosperm development

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Journal of Integrative Plant Biology 2021年第5期63卷 834-847页

作者： Mingzhou Yu Mingming Wu Yulong Ren Yihua Wang Jingfang Li Cailin Lei Yinglun Sun Xiuhao Bao Hongming Wu Hang Yang Tian Pan Yongfei Wang Ruonan Jing Mengyuan Yan Houda Zhang Lei Zhao Zhichao Zhao Xin Zhang Xiuping Guo Zhijun Cheng Bing Yang Ling Jiang Jianmin Wan State Key Laboratory for Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research CenterNanjing Agricultural UniversityNanjing 210095China National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Pentatricopeptide repeat(PPR) proteins, composing one of the largest protein families in plants,are involved in RNA binding and regulation of organelle RNA metabolism at the posttranscriptional level. Although several PPR proteins have been implicated in endosperm development in rice(Oryza sativa), the molecular functions of many PPRs remain obscure. Here, we identified a rice endosperm mutant named floury endosperm 18(flo18) with pleiotropic defects in both reproductive and vegetative ***-based cloning and complementation tests showed that FLO18 encodes a mitochondriontargeted P-type PPR protein with 15 PPR *** function was disrupted in the flo18 mutant, as evidenced by decreased assembly of Complex I in the mitochondrial electron transport chain and altered mitochondrial morphology. Loss of FLO18 function resulted in defective 5′-end processing of mitochondrial nad5 transcripts encoding subunit 5 of nicotinamide adenine dinucleotide hydrogenase. These results suggested that FLO18 is involved in 5′-end processing of nad5 messenger RNA and plays an important role in mitochondrial function and endosperm development.

关键词： aleurone layer endosperm development mitochondria PPR nad5,5′end processing

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Distributed emitter parameter refinement based on maximum likelihood

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International Journal of Intelligent Computing and Cybernetics 2017年第1期10卷 2-11页

作者： Xin Xu Science and Technology on Information System Engineering Laboratory Nanjing Research Institute of Electronic EngineeringNanjingChina

Purpose-Emitter parameter estimation via signal sorting is crucial for communication,electronic reconnaissance and radar intelligence ***,due to problems of transmitter circuit,environmental noises and certain unknown interference sources,the estimated emitter parameter measurements are still inaccurate and *** a result,it is indispensable to further refine the parameter *** the benchmark clustering algorithms are assumed to be capable of inferring the true parameter values by discovering cluster centers,the high computational and communication cost makes them difficult to adapt for distributed learning on massive measurement *** paper aims to discuss these ***/methodology/approach-In this work,the author brings forward a distributed emitter parameter refinement method based on maximum *** author’s method is able to infer the underlying true parameter values from the huge measurement data efficiently in a distributed working ***-Experimental results on a series of synthetic data indicate the effectiveness and efficiency of the author’s method when compared against the benchmark clustering ***/value-With the refined parameter values,the complex stochastic parameter patterns could be discovered and the emitters could be identified by merging observations of consistent parameter values ***,the author is in the process of applying her distributed parameter refinement method for PRI parameter pattern discovery and emitter *** superior performance ensures its wide application in both civil and military fields.

关键词： Data mining Distributed learning Maximum likelihood Parameter refinement Paper type Research paper

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Viologen-based flexible electrochromic devices

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Journal of Energy Chemistry 2024年第6期93卷 453-470,I0012页

作者： Wenwen Wu Shanlu Guo Jing Bian Xingyu He Haizeng Li Jianmin Li College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210023JiangsuChina Department of Pathology College of MedicineUniversity of CincinnatiCincinnati 45221OhioUSA Optics and Thermal Radiation Research center Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237ShandongChina

Electrochromic technology has gained significant attention in various fields such as displays,smart windows,biomedical monitoring,military camouflage,human-machine interaction,and electronic skin due to its ability to provide reversible and fast color changes under applied *** the rapid development and increasing demand for flexible electronics,flexible electrochromic devices(FECDs)that offer smarter and more controllable light modulation hold great promise for practical *** electrochromic material(ECM)undergoing color changes during the electrochemical reactions is one of the key components in electrochromic *** the ECMs,viologens,a family of organic small molecules with 1,1'-disubstituted-4,4'-dipyridinium salts,have garnered extensive research interest,due to their well-reversible redox reactions,excellent electron acceptance ability,and the ability to produce multiple ***,viologen-based FECDs demonstrate color changes in the liquid or semisolid electrolyte layer,eliminating the need for two solid electrodes and thus simplifying the device ***,viologens offer significant potential for the development of FECDs with high optical contrast,fast response speed,and excellent *** review aims to provide a comprehensive overview of the progress and perspectives of viologen-based *** begins by summarizing the typical structure and recent exciting developments in viologen-based FECDs,along with their advantages and ***,the review discusses recent advancements in FECDs with additional functionalities such as sensing,photochromism,and energy ***,the remaining challenges and potential research directions for the future of viologen-based FECDs are addressed.

关键词： Flexible electrochromic devices Optical modulation Viologens Flexible electronics Multifunctional devices Electrochromism

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Regioisomerism effect(RIE) on optimizing ultralong organic phosphorescence lifetimes

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Chinese Chemical Letters 2019年第11期30卷 1974-1978页

作者： Yanni Zhang Jianfeng Zhao Caixia Zhu Lifang Bian Huifang Shi Shiming Zhang Huili Ma Wei Huang Key Laboratory of Flexible Electronics (KLOFE) Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing Tech University (NanjingTech)

Organic phosphorescence materials demonstrate potential optoelectronic applications due to their remarkably ultralong organic phosphorescence(UOP)lifetime and abundant optical characteristics prior to the fluorescence *** a better insight into the intrinsic relationship among regioisomeric molecules,crystalline interactions,and phosphorescence properties,three crystalline dicarbazol-9-yl pyrazine-based regioisomers with para-,meta-and ortho-convergent substitutions(p-DCzP,m-DCzP,and o-DCzP)were designed and presented gradually increased UOP lifetimes prolonging from 63.14,127.93 to 350.46 ms,respectively,due to the regioisomerism effect(RIE)which would be an effective strategy for better understanding of structure-property of UOP materials.

关键词： Regioisomerism effect(RIE) Ultralong organic phosphorescence(UOP) Crystal engineering H-Aggregation

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Preparation of HNS microspheres by rapid membrane emulsification

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Particuology 2023年第8期79卷 35-44页

作者： Hongbiao Huo Baoyun Ye Yuhuai Shi Chenhe Feng Jiechao Wang Minjie Li Jiake Fan Lianqiang Li Jingyu Wang Chongwei An School of Environment and Safety Engineering North University of ChinaTaiyuan030051China Shanxi Engineering Technology Research center for Ultrafine Powder North University of ChinaTaiyuan030051China School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing210094China Institute of Occupational Health of Ordnance Industry Xi'an710065China

In order to improve the dispersibility and loading efficiency of 2,2',4,4',6,6'-hexanitrostilbene(HNS),HNS microspheres were prepared by rapid membrane emulsification method with nitrocellulose(NC)as *** effects of NC solution concentration,stirring speed and polyvinyl alcohol(PVA)solution concentration on microspheres were *** was characterized by scanning electron microscope(SEM),X-ray diffractometer(XRD),differential thermal analysis(DTA)and angle of repose *** results show that the HNS microspheres prepared with 5 wt%NC solution concentration,stirring speed of 100 rpm and 2 wt%PVA solution concentration have better regular morphology,higher sphericity,unchanged crystalline shape,increased activation energy and significantly improved dispersibility compared with the refined *** membrane emulsification has a series of advantages such as green,low cost and easy scale up,which provides a better way to prepare microspheres of energy materials.

关键词： Rapid membrane emulsification HNSmicrospheres Dispersibility

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Total and cause-specific mortality attributable to cold spells in China:A multicity and multicounty study

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Advances in Climate Change Research 2023年第6期14卷 827-835页

作者： He-Jia SONG Yi-Bin CHENG Yu WANG Yu-Shu HUANG Yan WANG Xue-Mei SU Shilu TONG Yong-Hong LI Xiao-Yuan YAO National Institute of Environmental Health Chinese Center for Disease Control and PreventionBeijing 100021China School of Public Health Institute of Environment and Population HealthAnhui Medical UniversityHefei 230032China center for Global Health School of Public HealthNanjing Medical UniversityNanjing 211166China School of Public Health and Social Work Queensland University of TechnologyBrisbane 4000Australia Daxing center for Disease Control and Prevention Beijing 102600China Department of Infectious Diseases Control and Prevention Jiaxing Center for Disease Control and PreventionJiaxing 314050China

Climate change has resulted in an increase in the frequency and intensity of extreme cold weather events,but few multicity or multicounty researches have explored the association between cold spells and mortality risk and *** collected daily data on climate,sociodemo-graphic factors and mortality in 18 cities/counties across 11 geographical regions for the period of November to March 2014-2018.A distributed lag nonlinear model was used to examine the association between cold spells and mortality after adjustment for confounding *** definitions of cold spells were ***-meta regression analysis was applied to pool the impacts over different *** spells were significantly associated with all-cause mortality at lag 0-21(CRR:1.38,95%CI:1.21,1.57).In addition to respiratory diseases and cir-culatory system diseases,digestive,endocrine and nervous system diseases and injury were also affected by cold *** magnitude of the impacts of cold spells on mortality varied among the diseases investigated,with the highest risk estimate found for influenza and pneumonia(CRR:2.00,95%CI:1.45,2.76)and the lowest estimate found for injury(CRR:1.26,95%CI:1.09,1.46).The fraction of all-cause mortality attributable to cold spells was 2.31%(95%CI:0.90%,3.46%).Among the regional differences,the attributable burden of all-cause mortality was higher in rural areas and subtropical monsoon climate zone,with attributable fractions of 2.85%(95%CI:1.23%,4.11%)and 3.36%(95%CI:0.55%,5.35%),*** spells increased mortality from a range of ***,older adults and residents of rural areas and subtropical monsoon climate zone were more vulnerable to cold spells *** findings may help to formulate preventive strategies and early warning response plans to reduce mortality burden of extreme cold events.

关键词： Cold spells Distributed lag nonlinear model Attributable fraction Mortality burden Sensitive diseases

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Applications of Additively Manufactured Adjustable Vaned Diffusers in Centrifugal Compressor

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Journal of Thermal Science 2022年第2期31卷 273-284页

作者： LIN Zhihua ZUO Zhitao LIANG Qi HOU Hucan GUO Wenbin CHEN Haisheng Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China National Energy Large Scale Physical Energy Storage Technologies R&D center(Bijie) Bijie 551712China nanjing Institute of Future Energy System IETCASNanjing 211135China

As a variable-condition adjustment technology,the adjustable vaned diffusers(AVDs)can expand the working flow range of the compressor in the compressed air energy storage(CAES)system and improve its aerodynamic *** order to investigate the regulatory mechanism of AVDs and capture the details of vane loading distribution for the diffuser design optimization,additively manufactured AVDs for testing in a centrifugal compressor closed test facility are designed and ***,the regulation law of AVDs was summarized by numerical analysis and experimental support,and the corresponding vane loading data was extracted for the distribution ***,based on the distribution characteristics,3D diffuser models were designed suitably for the adjustable ***,the laser selective melting(SLM)technology and die steel material 1.2709 were selected for metal printing according to the actual operating ***,performance testing and accuracy detection were performed on the finished test pieces,almost all inlet hole’s deviations were within the 0.3 mm *** research results indicated that additive manufacturing can significantly improve the accessibility of the internal flow channels of the diffuser,and derive the load of the blade on the pressure surface and suction surface in detail,also provide adjustable functions for variable operating *** can not only break through the traditional processing bottleneck of the complicated internal flow channels of AVDs but also improve the design matching degree with adjustable components;simultaneously,it ensures high performance with high precision and effectively shortens the long lead time.

关键词： additive manufacturing centrifugal compressor adjustable vaned diffusers vane loading

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A PRINCIPAL MODE OF CIRCULATION COVARIATION BETWEEN THE NORTHERN AND SOUTHERN HEMISPHERES AND ITS ASSOCIATION WITH ENSO DURING BOREAL WINTER

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Journal of Tropical Meteorology 2017年第4期23卷 450-461页

作者：唐卫亚管兆勇钱代丽 Key Laboratory of Meteorological Disaster Ministry of Education(KLME)/Joint Intemational Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjing 210044 China

By employing the singular value decomposition(SVD) analysis, we have investigated in the present paper the covariations between circulation changes in the Northern(NH) and Southern Hemispheres(SH) and their associations with ENSO by using the NCEP/NCAR reanalysis, the reconstructed monthly NOAA SST, and CMAP precipitation along with NOAA Climate Prediction center(CPC) ENSO indices. A bi-hemispheric covariation mode(hereafter BHCM) is explored, which is well represented by the first mode of the SVD analysis of sea surface pressure anomaly(SLPA-SVD1). This SVD mode can explain 57.36% of the total covariance of SLPA. BHCM varies in time with a long-term trend and periodicities of 3—5 years. The long term trend revealed by SVD1 shows that the SLP increases in the equatorial central and eastern Pacific but decreases in the western Pacific and tropical Indian Ocean, which facilitates easterlies in the lower troposphere to be intensified and El Ni觡o events to occur with lower frequency. The spatial pattern of the BHCM looks roughly symmetric about the equator in the tropics, whereas it is characterized by zonal disturbances in the mid-latitude of NH and is highly associated with AAO in the mid-latitude of SH. On inter-annual time scales, the BHCM is highly correlated with ENSO. The atmosphere in both the NH and SH responds to sea surface temperature anomalies in the equatorial region, while the contemporaneous circulation changes in the NH and SH in turn affect the occurrence of El Ni觡o/La Ni觡a. In boreal winter, significant temperature and precipitation anomalies associated with the BHCM are found worldwide. Specifically, in the positive phase of the BHCM,temperature and precipitation are anomalously low in eastern China and some other regions of East Asia. These results are helpful for us to better understand interactions between circulations in the NH and SH and the dynamical mechanisms behind these interactions.

关键词： Northern and Southern Hemispheres circulation variations covariation mode climate anomaly ENSO

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Hydrogenated vanadium oxides as an advanced anode material in lithium ion batteries

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Nano Research 2017年第12期10卷 4266-4273页

作者： Yufei Zhang Huanwen Wang Jun Yang Haosen Fan Yu Zhang Zhengfei Dai Yun Zheng Wei Huang Xiaochen Dong Qingyu Yan College of Chemistry and Chemical Engineering Inner Mongolia University Hohhot 010021 China Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) Nanjing 210009 China School of Materials Science and Engineering Nanyang Technological University 639798 Singapore

Current research on vanadium oxides in lithium ion batteries （LIBs） considers them as cathode materials, whereas they are rarely studied for use as anodes in LIBs because of their low electrical conductivity and rapid capacity fading. In this work, hydrogenated vanadium oxide nanoneedles were prepared and incorporated into freeze-dried graphene foam. The hydrogenated vanadium oxides show greatly improved charge-transfer kinetics, which lead to excellent electrochemical properties. When tested as anode materials （0.005-3.0 V vs. Li/Li＋） in LIBs, the sample activated at 600℃ exhibits high specific capacity （-941 mA-h-g-1 at 100 mA.g-1） and high-rate capability （-504 mA·h·g-1 at 5 A·g-1）, as well as excellent cycling performance （-285 mA.h.g-1 in the 1,000th cycle at 5A-g-1）. These results demonstrate the promising application of vanadium oxides as anodes in LIBs.

关键词： hydrogenation vanadium oxides 3D structure rechargeable lithium ionbattery (LIB) anode

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Arch-dam crack deformation monitoring hybrid model based on XFEM

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Science China(Technological Sciences) 2011年第10期54卷 2611-2617页

作者： ZHENG DongJian HUO ZhongYan LI Bo State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai UniversityNanjing 210098China National Engineering Research center of Water Resources Efficient Utilization and Engineering Safety Hohai UniversityNanjing 210098China College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China Changing River Scientific Institute Engineering Safety and Disaster Prevention InstituteWuhan 430010China

An extended finite element method incorporated with the cohesive crack model(CCM-based XFEM) is developed in consideration of crack tip *** could improve the accuracy and is introduced into dam safety monitoring for the first ***,the proposed method is verified for a benchmark concrete beam by comparing the results with those of numerical investigations obtained by other ***,it is adopted as an alternative method for building the deformation hybrid models of non-stable cracks in an arc dam,for the reason that classical FEMs are cumbersome in modeling the cohesive crack growth due to the need of remeshing the moving *** study proves that the fitted results of the mentioned deformation hybrid model,better than the classical statistical model,are well consistent with the measured data and reliable to forecast the development tendency of crack ***,the present CCM-based XFEM could provide a practical way to simulate and monitor the cracking process in concrete arch dam.

关键词： XFEM cohesive crack model concrete arch dam hybrid model

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