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Promoted Li+ conduction in PEO-based all-solid-state electrolyte by hydroxyl-modified glass fiber fillers

Rare Metals 2023年第3期42卷 875-884页

作者： Xin Wang Xiu Shen Peng Zhang Ai-Jun Zhou Jin-bao Zhao Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy MaterialsState-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Energy and School of Energy Research Xiamen UniversityXiamen 361102China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

In the polyoxyethylene(PEO)-based solid-state electrolytes,the low ionic conductivity of lithium ions limits its application in solid-state lithium batteries,so optimizing the conduction path of lithium ions is beneficial to improve the ionic *** this work,we report the use of hydrothermal carbon nano-sphere(HCS)modified glass fibers(GF)as a functional filler(GF@HCS)to improve the ionic conductivity of PEO composite solidstate *** oxygen atoms in the hydroxyl groups on the surface of HCS can be complexed with Li ions as its transport sites,which means that it can promote the longdistance transport of Li ions along the glass fiber *** addition of 2 wt%GF@HCS fillers,the degree of crystallinity of PEO composite solid-state electrolyte is the smallest,and the ionic conductivity is significantly increased from 8.9×10^(-5) to 4.4×10^(-4) S·cm^(-1) at 60℃.Moreover,the PEO composite solid-state electrolyte exhibits better lithium-metal interface stability in symmetric lithium batteries and superior rate performance in LiFePO4 solid-state batteries.

关键词： Filler modification Hydrothermal carbon spheres Transport channel Polyoxyethylene(PEO)composite electrolyte All-solid-state battery

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Modelling the Effects of Pest Control with Development of Pesticide Resistance

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Acta Mathematicae Applicatae Sinica 2021年第1期37卷 109-125页

作者： Bing LIU bao-lin KANG Feng-mei TAO Gang HU College of Mathematics and Information Science Anshan Normal UniversityAnshan 114007China

In this paper,we assume that the pest population is divided into susceptible pests and infected pests,and only susceptible pests do harm to *** the two methods of spraying pesticides and releasing infected pests and natural enemies to control susceptible pests(the former is applied more frequently),and assuming that only susceptible pests develop resistance to pesticides,a pest control model with resistance development is *** using the basic theory of impulsive differential systems and analytical methods,the sufficient condition for the global attractiveness of the susceptible pest eradication periodic solution is *** with numerical simulations,the effects of spraying frequency of pesticides on critical threshold conditions for eradicating susceptible pests are *** results confirm that it is not that the more frequently the pesticides are sprayed,the better the result of the pest control *** control strategies for eradicating susceptible pests are proposed:switching pesticides and releasing natural enemies ***,the parameters in the critical threshold are analyzed from the following two aspects:(1)The key factors affecting pest control are determined by parameter sensitivity *** results indicate that the correlation of the critical threshold concerning the killing efficiency rate and the decay rate of pesticides to susceptible pests varies due to the resistance development of susceptible pests.(2)Three-dimensional graphs and contours of susceptible pest eradication critical threshold with two parameters are simulated,and the effects of the main parameters on the critical threshold are analyzed.

关键词： pest control model resistance pesticide function susceptible pest eradication periodic solution

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Administration of Saccharomyces boulardii mafic-1701 improves feed conversion ratio,promotes antioxidant capacity,alleviates intestinal inflammation and modulates gut microbiota in weaned piglets

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Journal of Animal Science and Biotechnology 2021年第2期12卷 689-699页

作者： Wenxiu Zhang Chengling bao Jian Wang Jianjun Zang Yunhe Cao State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background:Probiotics are used as a means to improve animal health and intestinal *** boulardii is a well-known probiotic;however,few studies have examined the effects of *** on weaned piglet ***,this 28-day study compared the effects of *** mafic-1701 and aureomycin in diets for weaned piglets on growth performance,antioxidant parameters,inflammation and intestinal *** hundred and eight piglets,weaned at 28 d of age(8.5±1.1 kg),were randomly divided into the three dietary treatment groups with six pens and six piglets per pen(half male and half female).The dietary treatment groups were as follows:1)basal diet(CON);2)basal diet supplemented with 75 mg/kg aureomycin(ANT);3)basal diet supplemented with 1×108 CFU/kg *** mafic-1701(SB).Results:Compared to CON group,SB group had higher feed efficiency(P<0.05)in the last 14 d and lower diarrhea rate(P<0.05)over the entire 28 *** superoxide dismutase in serum was markedly increased in SB group(P<0.05).Moreover,compared with CON group,SB group decreased the levels of pro-inflammatory cytokines interleukin-6(P<0.01)and Tumor necrosis factor-α(P<0.05)in *** of *** mafic-1701 increased the abundance of Ruminococcaceae_UCG_009 and Turicibacter(P<0.05),whereas the abundance of unclassified_Clostridiaceae_4 was decreased(P<0.05).Furthermore,*** mafic-1701 administration increased cecal concentration of microbial metabolites,isobutyrate and valerate(P<0.05).Conclusions:The improvement in feed conversion ratio,reduction in diarrhea rate in weaned piglets provided diets supplemented with *** mafic-1701 may be associated with enhanced antioxidant activity,antiinflammatory responses and improved intestinal microbial ecology.

关键词： Inflammation Microbiota Saccharomyces boulardii Short chain fatty acid Weaned piglet

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过表达MeERF72对C3木薯淀粉合成的影响

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分子植物育种 2024年第16期22卷 5335-5341页

作者：廖明馨李可李梦桃鲍茹雪陈新王文泉海南大学热带作物学院海口570228 中国热带农业科学院热带生物技术研究所海口571101

木薯蔗糖合酶1(MeSuSy1)是淀粉生物合成通路上第一个关键酶,而乙烯响应因子MeERF72可调控其转录活性。为探究MeERF72对木薯(Manihot esculenta Crantz)块根淀粉合成的影响,本研究在盆栽条件下,检测野生型、MeERF72过表达系和RNAi干扰系M... 详细信息

木薯蔗糖合酶1(MeSuSy1)是淀粉生物合成通路上第一个关键酶,而乙烯响应因子MeERF72可调控其转录活性。为探究MeERF72对木薯(Manihot esculenta Crantz)块根淀粉合成的影响,本研究在盆栽条件下,检测野生型、MeERF72过表达系和RNAi干扰系MeERF72和MeSuSy1在叶片和块根中的表达量,并测定木薯块根薯肉的淀粉、还原糖和总糖含量。结果显示,过表达株系的块根中MeERF72的表达量显著高于野生型C3,其MeSuSy1的表达量显著低于野生型C3,干扰植株反之;MeERF72干扰株系薯肉的淀粉和总糖含量显著高于野生型C3,过表达株系反之,表明MeERF72可能负调控MeSuSy1的转录活性,降低蔗糖分解效率,进而减少淀粉合成。本研究明确了MeERF72对MeSuSy1的调控机制和对木薯淀粉合成的影响,为进一步研究淀粉代谢通路的基因调控网络以及热带作物重要性状的遗传改良策略提供参考。

关键词：木薯(Manihot esculenta Crantz) 淀粉生物合成 ERF基因蔗糖合成酶

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Feature Construction and Identification of Convective Wind from Doppler Radar Data

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Journal of Meteorological Research 2022年第1期36卷 79-92页

作者： Yuchen bao Juntao XUE Di WANG Yue YUAN Ping WANG School of Electrical and Information Engineering Tianjin UniversityTianjin 300072

Convective wind is one of the common types of severe convective *** and Forecasting of convective wind are *** this paper,five kinds of features are firstly constructed from characteristics of typical convective wind-related echo phenomena based on Doppler radar *** features include storm motion,high-value reflectivity,high-value velocity,velocity shear,and velocity texture.A severe convectiye wind(SCW)identification model is then built by applying the above features to the random forest *** convective wind samples collected over 13 cities of China in June-August 2016,it is found that the probability of detection(POD)of SCW is 78.9%,the false alarm ratio(FAR)is 26.4%,and the critical success index(CSI)is 61.5%.For the convective wind samples that cary typical echo features,the POD,FAR,and CSI range from 89.4%to 99.3%,4.2%to 16.0%,and 76.4%to95.1%,***,the POD and negative-case POD of samples without typical echo features are 66.8%and 85.4%,*** experimental results demonstrate that the SCW identification model can classify nonSCW effectively,and performs better with SCW samples carrying typical echo features than without.

关键词： convective wind identification radial velocity shear features texture features machine learning

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The model of tracing drift targets and its application in the South China Sea

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Acta Oceanologica Sinica 2022年第4期41卷 109-118页

作者： Yang Chen Shouxian Zhu Wenjing Zhang Zirui Zhu Muxi bao Key Laboratory of Marine Hazards Forecasting of Ministry of Natural Resources Hohai UniversityNanjing 210098China College of Oceanography Hohai UniversityNanjing 210098China College of Meteorology and Oceanography National University of Defense TechnologyNanjing 211101China Nanjing Maritime Safety Administration Nanjing 210009China

A Leeway-Trace model was established for the traceability analysis of drifting objects at *** model was based on the Leeway model which is a Monte Carlo-based ensemble trajectory model,and a method of realistic traceability analysis was proposed in this study by using virtual spatiotemporal drift trajectory ***,measured data from a drifting buoy observation experiment in the northern South China Sea in April 2019,combined with surface current data obtained from the finite volume community ocean model(FVCOM),were used for the traceability analysis of humanoid *** results were basically consistent with the observations,and the assimilation of measured current data can significantly improve the accuracy of the traceability *** sensitive experiments were designed to discuss the effects of wind and tide on the traceability analysis,and their results showed that the wind-driven current and the wind-induced leeway drift are both important to the traceability *** effect of tidal currents on traceability could not be ignored even though they were much weaker than the residual currents in the experimental area of the northern South China Sea.

关键词： South China Sea FVCOM Leeway-Trace model traceability analysis

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Synthesis of SmCo_5 nanoparticles with small size and high performance by hydrogenation technique

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Rare Metals 2018年第12期37卷 1021-1026页

作者： Zhen-Hui Ma Tian-Li Zhang Hui Wang Cheng-bao Jiang School of Materials Science and Engineering Beihang University

SmConanoparticles(NPs) have promising applications in high-density magnetic storage and magnetic nanocomposites. In this work, A novel method to yield SmCoparticles with small size and high coercivity was reported. Firstly, SmO-Co NPs with size of 6-15 nm were fabricated by a solvothermal route. Then the agglomerated SmCoparticles were obtained by thermal reduction of the precursor, which show high coercivity of2.0 T at room temperature. At last, the as-synthesized SmCoparticles were further hydrogenated under high hydrogen pressure of 4 MPa at room temperature, where hydrogen absorption process could form small-sized SmCoHparticles due to their lattice expansion and hydrogen desorption process could convert SmCoHNPs into SmCoNPs. The prepared SmCoNPs after hydrogenation, showing well distribution, have a small size of5-20 nm and room temperature coercivity of 1.22 T.

关键词： SmCo_5 Nanoparticles Hydrogenation Coercivity

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Carrier-driven magnetic and topological phase transitions in twodimensional III-V semiconductors

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Nano Research 2023年第2期16卷 3443-3450页

作者： Yan Li Xinru Ma Hongwei bao Jian Zhou Fei Ma Jingbo Li State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Center for Alloy Innovation and Design Xi’an Jiaotong UniversityXi’an 710049China Institute of Semiconductors South China Normal UniversityGuangzhou 510631China

III-V semiconductors such as GaAs are widely studied as promising candidates for high-speed integrated *** these applications for conventional bulk structures,their fundamental physical properties in the nanoscale limit are still in scarcity,which is of great importance for the development of *** this work,we demonstrate that the III-V semiconductor MX(M=Al,Ga,In;X=P,As,Sb)in its two-dimensional(2D)limit could exhibit double layer honeycomb(DLHC)configuration and distorted tetrahedral coordination,according to our first-principles calculations with HSE06 hybrid *** is found that surface reconstruction endows 2D III-V DLHCs with pronouncedly different electronic and magnetic properties from their bulk counterparts due to strong interlayer ***-hat-shape bands emerge at the top valence bands of pristine AlP,GaP,InP,AlAs,and InAs DLHCs,inducing the density of states showing a sharp van Hove singularity near the Fermi *** a result,these DLHCs exhibit itinerant magnetism upon moderate hole doping,while the rest GaAs,AlSb,GaSb,and InSb DLHCs become magnetic under tensile strain with hole *** an exchange splitting of the localized pz states at the top valence bands,the hole-doped III-V DLHCs become half-metals with 100%***,the InSb DLHC shows inverted band structure near the Fermi level,bringing about nontrivial topological band structures in stacked InSb DLHC due to the strong spin-orbital *** III-V DLHCs expand the members of 2D material family and their exotic magnetic and topological properties may offer great potential for applications in the novel electronic and spintronic devices.

关键词： III-V semiconductors HSE06 hybrid functional Mexican-hat-shape bands magnetism topological bands

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Global seismic tomography reveals remnants of subducted Tethyan oceanic slabs in the deep mantle

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Science China Earth Sciences 2023年第12期66卷 2751-2769页

作者： Zewei WANG Jiashun HU Xueyang bao Chunquan YU Yingjie YANG Xiaofei CHEN Guangdong Provincial Key Laboratoryof Geophysical High-resolution Imaging Technology Southern University of Science and Technology Shenzhen 518055China Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen 518055China

The Tethyan evolution depicts the continuous process of landmasses separating from the Gondwana continent in the south,drifting northwards,and subsequently colliding with the continents in the north over the past 500 million *** this process,the Tethyan oceans that formed between the landmass and the southern or northern continents underwent growth,evolution,and eventual closure with the early Cenozoic India-Eurasia ***,the Tethyan lithosphere did not disappear but rather continued to evolve after entering into the deep *** current position,morphology,and volume of the subducted Tethyan oceanic slabs in the deep mantle record the latest moment of this continuous evolution,providing critical constraints for Tethyan *** paper summarizes and analyzes the results of global-scale whole-mantle seismic tomography in the past nearly two decades,revealing a northwest-southeast seismically high-velocity anomaly,which is linearly distributed at depths of 1000–2000 km beneath the Tethyan realm and referred to as the Tethyan *** searching for an optimal linear combination of previous global seismic tomographic models to best match the known subducted slabs in the upper mantle,we observe that the Tethyan anomaly extends approximately 8700 km in length and 2600 km in width,exhibiting a parallel structure with northern and southern *** geological records of oceanic subduction initiation and previous geodynamic studies,this study suggests that the main body of the Tethyan anomaly represents the remnants of the subducted Neo-Tethyan oceanic slabs,which subducted from the Late Jurassic to the early *** northern branch consists of subducted slabs from the Neo-Tethys beneath the southern margin of Eurasia,while the southern branch likely reflects the intra-oceanic subducted slabs of Neo-Tethys during the *** western portion of the Tethyan anomaly may reflect remnants of Paleo-Tethys,while the eastern portion,tow

关键词： Global seismic tomography Tethyan evolution Oceanic slabs Lower-mantle structure High-velocity anomaly

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超声心动图斑点追踪技术在蒽环类化疗药物所致心脏毒性反应早期监测中的应用分析

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临床和实验医学杂志 2024年第2期23卷 214-217页

作者：赵红王宝震杨珊黄丹桂沧州市人民医院超声科河北沧州061000

目的研究超声心动图斑点追踪技术在早期监测蒽环类化疗药物所致心脏毒性反应中的应用效果。方法回顾性选取2022年1月至2023年1月沧州市人民医院收治的100例乳腺癌患者,所有患者于蒽环类化疗药物治疗4个周期之后均接受12导联心电图检查,... 详细信息

目的研究超声心动图斑点追踪技术在早期监测蒽环类化疗药物所致心脏毒性反应中的应用效果。方法回顾性选取2022年1月至2023年1月沧州市人民医院收治的100例乳腺癌患者,所有患者于蒽环类化疗药物治疗4个周期之后均接受12导联心电图检查,参考检查结果分为A组(心电图异常,n=50)与B组(心电图正常,n=50);同时,选取同一时期入院体检的50名健康女性为C组。三组均接受超声心动图检查,生物力学参数予以二维斑点追踪成像测定。比较三组常规超声心动图相关参数[左心房内径(LAD)、左心室内径(LVD)、室间隔厚度(IVS)、左心室后壁厚度(LVPW)、A峰值流速、二尖瓣口舒张期E、E/A比值,左心室射血分数(LVEF)、左心室舒张末期容积(LVEDV)]与二维斑点追踪成像技术相关参数[基底段平面纵向心肌应变(bLS)、中间段平面纵向心肌应变(mLS)、心尖段平面纵向心肌应变(aLS)、整体全层纵向应变(GLS)、达峰时间离散度(PSD)、整体全层径向应变(GRS)、整体全层圆周应变(GCS)、心尖部旋转角度峰值(AP-Prot)、心底部旋转角度峰值(MV-Prot)、左心室整体扭转角度峰值(LV-Ptw)]。结果三组LAD、LVD、IVS、LVPW、LVEF比较,差异均无统计学意义(P>0.05);A组E/A比值为0.91±0.21,明显低于B组(1.31±0.22)、C组(1.33±0.24),LVEDV为(104.25±12.86)mL,明显高于B组[(88.87±11.46)mL]、C组[(88.59±11.13)mL],差异均有统计学意义(P<0.05)。A组bLS、mLS、aLS、GLS、GRS、GCS、AP-Prot、LV-Ptw分别为-8.59±2.12、-10.36±2.33、-9.28±2.20、-9.52±2.09、15.58±4.61、-13.29±3.32、(4.28±0.99)°、(9.19±1.62)°,均明显低于B组[-16.23±2.38、-15.22±2.49、-16.41±2.22、-15.92±2.57、21.63±6.78、-18.39±3.12、(7.58±2.31)°、(13.71±2.14)°]、C组[-21.79±3.45、-18.37±2.41、-19.98±4.11、-20.01±4.12、25.17±6.59、-19.17±5.96、(9.19±2.43)°、(16.12±2.31)°],PSD为(66.89±15.67)ms,明显高于B组[(46.63±13.09)ms]、C组[(29.82±6.86)ms],B组bLS、mLS、aLS、GLS、GRS、AP-Prot、LV-Ptw均明显低于C组,PSD明显高于C组,差异均有统计学意义(P<0.05)。结论超声心动图斑点追踪技术于早期监测蒽环类化疗药物所致心脏毒性反应中具有显著效果,观察左心室纵向心肌活动可对早期心脏收缩功能异常予以评估。

关键词：蒽环类化疗药物心脏毒性反应超声心动图斑点追踪技术早期监测

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