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16篇 您的检索式:作者名="Yan Junpeng"
    题名 作者 年代 出处 被引量
1Triglycerides and ratio of triglycerides to high-density lipoprotein cholesterol are better than liver enzymes to identify insulin resistance in urban middle-aged and older non-obese Chinese without diabetes显示文摘Sun Yu Li Wenjuan Hou Xinguo Wang Chuan Li Chengqiao Zhang Xiuping Yang Weifang Ma Zeqiang Wang Weiqing Ning Guang Zheng Huizhen Ma Aixia Song Jun Lin Peng Liang Kai Liu Fuqiang Gong Lei Wang Meijian Xiao Juan Yan Fei Yang Junpeng Wang Lingshu Tian Meng Liu Jidong Zhao Ruxing Zhu Ping Chen Li 2014Chinese Medical Journal2014,,10:7
2Microstructure evolution of Al-Zn-Mg-Cu-Zr alloy during hot deformation显示文摘Compression tests of the Al-Zn-Mg-Cu-Zr(7055) alloy were performed at various strains and temperatures from 300 to 450℃ under a constant strain rate between 10-2 s-1 and 1 s-1.Microstructures during hot deformation were studied by transmission electron microscopy(TEM).Dislocation density,dislocation cells and subgrains of the deformed samples were investigated in detail and compared to make a better understanding of the microstructure evolution.The results showed that stress-strain curves under the experimental conditions belonged to the type of dynamic recovery.When the alloy deformed at various strains and 300℃,the microstructure underwent a process of disordered dislocations to cell structure,subgrain structure and subgrain coarsening.With the temperature increasing,subgrains grew and dislocation density in the interior decreased at a strain rate of 1 s-1.At the temperature of 350℃,the average diameter of subgrains decreased,sub-boundaries broadened and dislocation density in the interior decreased when the strain rate was increased.The deformed samples of 7055 alloy had smaller subgrains than that of 7005 alloy at the same compression condition because of high alloy content.YAN Liangming,SHEN Jian,LI Zhoubing,LI Junpeng,and YAN Xiaodong General Research Institute for Nonferrous Metals,Beijing 100088,China 2010Rare Metals2010,29,4:4
3Modulation of nitrate-induced phosphate response by the MYB transcription factor RLI1/HINGE1 in the nucleus显示文摘The coordinated utilization of nitrogen(N)and phosphorus(P)is vital for plants to maintain nutrient balance and achieve optimal growth.Previously,we revealed a mechanism by which nitrate induces genes for phosphate utilization;this mechanism depends on NRT1.1B-facilitated degradation of cytoplasmic SPX4,which in turn promotes cytoplasmic-nuclear shuttling of PHR2,the central transcription factor of phosphate signaling,and triggers the nitrate-induced phosphate response(NIPR)and N-P coordinated utilization in rice.In this study,we unveiled a fine-tuning mechanism of NIPR in the nucleus regulated by Highly Induced by Nitrate Gene 1(HINGE1,also known as RLI1),a MYB-transcription factor closely related to PHR2.RLI1/HINGE1,which is transcriptionally activated by PHR2 under nitrate induction,can directly activate the expression of phosphate starvation-induced genes.More importantly,RLI1/HINGE1 competes with PHR2 for binding to its repressor proteins in the nucleus(SPX proteins),and consequently releases PHR2 to further enhance phosphate response.Therefore,RLI1/HINGE1 amplifies the phosphate response in the nucleus downstream of the cytoplasmic SPX4-PHR2 cascade,thereby enabling fine-tuning of N-P balance when nitrate supply is sufficient.Zhihua Zhang Zhao Li Wei Wang Zhimin Jiang Liping Guo Xiaohan Wang Yangwen Qian Xiahe Huang Yongqiang Liu Xiujie Liu Yahong Liu Aifu Li Yu Yan Junpeng Xie Shouyun Cao Stanislav Kopriva Legong Li Fanjiang Kong Baohui Liu Yingchun Wang Bin Hu Chengcai Chu 2021Molecular Plant2021,14,3:4
4Phase evolution, microstructure, electric properties of (Ba1–xBi0.67xNa0.33x)(Ti1–xBi0.33xSn0.67x)O3 ceramics显示文摘(Ba1–xBi0.67xNa0.33x)(Ti1–xBi0.33xSn0.67x)O3(abbreviated as BBNTBS,0.02≤x≤0.12)ceramics were fabricated via a traditional solid state reaction method.The phase transition of BBNTBS from tetragonal to pseudo cubic is demonstrated by XRD and Raman spectra.The BBNTBS(x=0.1)ceramics have decent properties with a highεr(~2250),smallΔε/ε25℃ values of±15%over a wide temperature range from–58 to 171℃,and low tanδ≤0.02 from 10 to 200℃.The basic mechanisms of conduction and relaxation processes in the high temperature region were thermal activation,and oxygen vacancies might be the ionic charge transport carriers.Meanwhile,BBNTBS(x=0.1)exhibited decent energy storage density(Jd=0.58 J/cm3)and excellent thermal stability(the variation of Jd is less than 3% in the temperature range of 25–120℃),which could be a potential candidate for high energy density capacitors.Xiuli CHEN Xu LI Huanfu ZHOU Jie SUN Xiaoxia LI Xiao YAN Congcong SUN Junpeng SHI 2019Journal of Advanced Ceramics2019,8,3:4
5Understanding the improved performance of sulfur-doped interconnected carbon microspheres for Na-ion storage显示文摘As one of the low-cost energy storage systems,Na-ion batteries(NIBs)have received tremendous attention.However,the performance of current anode materials still cannot meet the requirements of NIBs.In our work,we obtain sulfur-doped interconnected carbon microspheres(S-CSs)via a simple hydrothermal method and subsequent sulfurizing treatment.Our S-CSs exhibit an ultrahigh reversible capacity of 520 mAh g^(-1) at 100 mA g^(-1) after 50 cycles and an excellent rate capability of 257 mAh g^(-1),even at a high current density of 2 A g^(-1).The density functional theory calculations demonstrate that sulfur doping in carbon favors the adsorption of Na atom during the sodiation process,which is accountable for the performance enhancement.Furthermore,we also utilize operando Raman spectroscopy to analyze the electrochemical reaction of our S-CSs,which further highlights the sulfur doping in improving Na-ion storage performance.Xinran Yuan Siming Chen Jinliang Li Junpeng Xie Genghua Yan Botian Liu Xibo Li Rui Li Likun Pan Wenjie Mai 2021Carbon Energy2021,3,4:3
6High-per- formance supercapacitor electrodes based on highly corrugated grapheme sheets 显示文摘Jun Yan Junpeng Liu Zhuangjun Fan 2012Carbon2012,50,:1
7Phase separation-hydrogen etching-derived Cu-decorated Cu-Mn bimetallic oxides with oxygen vacancies boosting superior sodium-ion storage kinetics显示文摘Understanding the crystal phase evolution of bimetallic oxide anodes is the main concern to profoundly reveal the conversion reaction kinetics and sodium-ion storage mechanisms.Herein,an integrated selfsupporting anode of the Cu-decorated Cu-Mn bimetallic oxides with oxygen vacancies(Ov-BMO-Cu)are in-situ generated by phase separation and hydrogen etching using nanoporous Cu-Mn alloy as selfsacrificial templates.On this basis,we have elucidated the relationship between the phase evolution,oxygen vacancies and sodium-ion storage mechanisms,further demonstrating the evolution of oxygen vacancies and the inhibition effect of manganese oxides as an“anchor”on grain aggregation of copper oxides.The kinetic analyses confirm that the expanded lattice space and increased oxygen vacancies of cycled Ov-BMO-Cu synergistically guarantee effective sodium-ion diffusion and storage mechanisms.Therefore,the Ov-BMO-Cu electrode exhibits higher reversible capacities of 4.04 mA h cm^(-2)at 0.2 mA cm^(-2)after 100 cycles and 2.20 m A h cm^(-2)at 1.0 mA cm^(-2)after 500 cycles.Besides,the presodiated Ov-BMO-Cu anode delivers a considerable reversible capacity of 0.79 m A h cm^(-2)at 1.0 mA cm^(-2)after 60 cycles in full cells with Na_(3)V_(2)(PO_(4))_(3)cathode,confirming its outstanding practicality.Thus,this work is expected to provide enlightenment for designing high-capacity bimetallic oxide anodes.Lin Yan Lingshuo Zong Qi Sun Junpeng Guo Zhenyang Yu Zhijun Qiao Jiuhui Han Zhenyu Cui Jianli Kang 2023Journal of Energy Chemistry2023,,5:1
8Dynamic recrystallization of 7055 aluminum alloy during hot deformation显示文摘YAN Liangrning SHEN Jian LI Junpeng 2010Materials Science Forum2010,650,:1
9Hierarchical structured CoP nanosheets/carbon nanofibers bifunctional eletrocatalyst for high-efficient overall water splitting显示文摘The design of efficient,stable,and economical electrocatalysts for oxygen and hydrogen evolution reaction(OER and HER)is a major challenge for overall water splitting.Herein,a hierarchical structured CoP/carbon nanofibers(CNFs)composite was successfully synthesized and its potential application as a high-efficiency bifunctional electrocatalyst for overall splitting water was evaluated.The synergetic effect of two-dimensional(2D)CoP nanosheets and on e-dimensi on al(1D)CNFs endowed the CoP/CNFs composites with abundant active sites and rapid electron and mass transport pathways,and thereby significantly improved the electrocatalytic performances.The optimized CoP/CNFs delivered a current density of 10 mA cm^(-2) at low overpotential of 325 mV for OER and 225 mV for HER.In the overall water splitting,CoP/CNFs achieved a low potential of 1.65 V at 10 mA cm^(-2).The facile strategy provided in the present work can facilitate the design and development of multifunctional non-noble metal catalysts for energy applications.Xiao-Qiao Xie Junpeng Liu Chaonan Gu Jingjing Li Yan Zhao Chun-Sen Liu 2022Journal of Energy Chemistry2022,31,1:1
10Dynamic recrystallization of 7055 aluminum alloy during hot deform- ation materials显示文摘YAN Liangming SHEN Jian LI Junpeng 2010Science Forum2010,650,:1
113个小型高原湖泊水陆交错带中植物叶片pH值变异及其潜在影响因素显示文摘陆生植物叶片pH值是与植物生理功能和养分利用状况息息相关的重要植物属性,并随植物功能型和环境的变化而变化。然而,水生植物叶片pH值的变异特征及其与陆生植物间的差异性仍不清楚。在3个自然形成的小型高原湖泊的湖滨植物群落中,我们采集植物、土壤和湖水样品,检测了植物叶片pH值与碳、氮含量以及环境条件(水或土壤pH值、土壤水位状况)。从植物功能型和群落两个水平分析了湖滨植物叶pH值沿水分梯度的变化及其潜在影响因素。研究结果表明,不同类型的水生植物,以及水生、沼生和陆生环境中生长的植物的叶pH存在较大差异;浮叶植物叶片pH值(4.21±0.05)显著低于挺水植物(5.71±0.07)和沉水植物(5.82±0.06);水生草本植物叶片pH值(5.43±0.10)显著低于沼生草本植物(6.12±0.07)和陆生草本植物(5.74±0.05);陆生草本植物叶片pH值显著高于木本植物。植物功能群间叶片pH值的变异可能与叶片的结构、光利用特性和养分特性有关。群落水平的结果与植物功能型水平相一致:水生群落叶片pH值显著低于陆生群落。群落水平叶片pH值可能主要受物种组成、水分条件和环境pH值的影响。本研究首次探索了水生植物的pH值,并且在景观尺度上对比了不同功能型植物的叶片pH值,为深入探索植物pH值变异机制以及其在水生和湿地生态系统中的生态意义提供参考。Sining Liu Shenqun An Zhengbing Yan Junpeng Ren Xiaoqian Lu Feiyang Ge Wenxuan Han 2021Journal of Plant Ecology2021,14,3:1
12Thrombol effect of Subtilisin QK on carrageenan induced thromb model in mice 显示文摘Yan Feng Yan Junpeng Sun Weiting J- Thromb Thrombolysis0,2028,:1
13A Novel Material for Selective Separation of Mono-galactosyldiacylglycerols from Microalgae显示文摘Monogalactosyldiacylglycerols(MGDGs)have potential applications in food products,cosmetics and pharmaceuticals.MGDGs from microalgae with high amounts of polyunsaturated fatty acids(PUFAs)have potential functions,which arise the interest of the researchers.MGDGs were prepared by silica gel column chromatography with the appropriate mobile phase,while due to the similarity to molecular structure of MGDGs,digalactosyldiacylglycerols(DGDGs)were the most difficult impurities to separate during the extraction process of MGDGs from Nannochloropsis oceanica IMET1 and Arthrospira platensis.In order to obtain MGDGs from microalgae using low toxic solvent system,a novel material Click thiol-ene cysteine(Click TE-Cys)was employed to achieve its selective separation by differentiation of the hydrophilic interaction.The mixture of MGDGs and DGDGs standards were separated from each other by Click TE-Cys solid phase extraction(SPE),which was further confirmed by the result of LC-MS.The molecular interaction of MGDGs and DGDGs with Click TE-Cys demonstrated that DGDGs had more hydrogen bonds with Click TE-Cys material,which might cause a higher hydrophilic interaction.In this study,the Click TE-Cys material exhibited higher hydrophilicity with DGDGs and effectively separated MGDGs from 4 species microalgae by‘flow-through'mode using ethanol as mobile phase.JIANG Junpeng YANG Miao CAO Xupeng WAN Huihui LIU Shuqin ZHONG Shijun YAN Jingyu XUE Song 2021Journal of Ocean University of China2021,20,1:0
14Scientometric analysis of physics (1979-2008):A quantitative description of scientific impact显示文摘Citations are a way to show how researchers build on existing research to further evolve research.The citation count is an indication of the influence of specific articles.The importance of citations means that it is valuable to analyze the articles that are cited the most.This research investigates highly-cited articles in physics (1979-2008) using citation data from the ISI Web of Science.In this study,1544205 articles were examined.The objective of the analysis was to identify and list the highly-productive countries,institutions,authors,and fields in physics.Based on the analysis,it was found that the USA is the world leader in physics,and Japan has maintained the highest growth rate in physics research since 1990.Furthermore,the research focus at Bell Labs and IBM has played important roles in physics.A striking fact is that the five most active authors are all Japanese,but the five most active institutions are all in the USA.In fact,only The University of Tokyo is ranked among the top 11 institutions,and only American authors have single-author articles ranked among the top 19 articles.The highest-impact articles are distributed across 25 subjects categories.Physics,Multidisciplinary has 424 articles,and is ranked at No.1 in total articles;followed by Physics,Condensed Matter.The study can provide science policy makers with a picture of innovation capability in this field and help them make better decisions.Hopefully,this study will stimulate useful discussion among scientists and research managers about future research directions.ZHENG YanNing YUAN JunPeng PAN YunTao ZHAO XiaoYuan 2011Science China(Physics,Mechanics & Astronomy)2011,54,1:0
15A New Exploration of Artificially Induced Spalted Wood of Two Fungi:Hypoxylon and Sistotrema显示文摘One strain of Hypoxylon sp.CXM-3 and one strain of Sistotrema brinkmannii CXM-4 were inoculated onto sterilized cherry,poplar,birch,and basswood sheets in a certain shape and incubated at constant temperature and humidity for 4,8,12,and 16 weeks,respectively,to analyze whether the grain pattern formed by the zone lines was consistent with the predetermined pattern.The results showed that the zone lines of CXM-3 of Hypoxylon were free,delicate,and soft,with brown lines and black staining,mostly accompanied by black and brown dots,facets,and clusters,while the zone lines of CXM-4 of Sistotrema brinkmannii grew along the predetermined grain,with strong lines and a clean surface.After inoculation and incubation at a constant temperature of 25℃±2℃ and humidity of 60%,Sistotrema brinkmannii CXM-4,on basswood veneer at 4-8 weeks and cherry veneer at 4-16 weeks,were able to develop zone lines following a predetermined grain.Artificially induced spalted wood can only maintain a large shape,which cannot guarantee that the pattern of large-scale production of spalted wood is exactly the same and cannot be accurate to the minute details.The artificial induction can thus result in the formation of a predetermined grain pattern of the mottled wood,thus enhancing the product value and artistic value of solid wood furniture and crafts.Yan Yan Junpeng Dong Haibo Hu Susu Yang Lin Liu Lei Qin 2023Journal of Renewable Materials2023,11,11:0
16Nitrate confers rice adaptation to high ammonium by suppressing its uptake but promoting its assimilation显示文摘Dear Editor,earEaltor,Nitrogen(N)is the most important macronutrient driving plant growth and development.For higher plants,inorganic N including nitrate(NO_(3)^(-))and ammonium(NH_(4)^(+))are predominant N sources(Hu et al.,2023).Nitrate needs to be firstly reduced into ammonium to implement its assimilation,thus requiring a higher energy consumption than ammonium,making ammonium more cost effective for plants.However,ammonium usually causes severe growth retardation of plants under high concentration,which is known as ammonium toxicity.The concentrations of nitrate and ammonium greatly vary in different soil environments.Nitrate is the major inorganic N form in dry land,while ammonium accounts for thehighest proportion of inorganic N in the paddy field,where nitrification is suppressed(Haynes and Goh,1978).Although nitrogen is generally one of the most important contributing factors for yield increase,irrational fertilization strategies can cause negative effects.Yu Yan Zhihua Zhang Huwei Sun Xiujie Liu Junpeng Xie Yahong Qiu Tuanyao Chai Chengcai Chu Bin Hu 2023Molecular Plant2023,16,12:0
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