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Experimental and Theoretical Study on Piezoresistive Behavior of Compressible Melamine Sponge Modified by Carbon-based Fillers

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Chinese Journal of Polymer Science 2022年第11期40卷 1503-1512页

作者： xiao-Ling luo Dirk W.Schubert Institute of Polymer Materials Friedrich-Alexander-University Erlangen-NurembergMartensstr.7Erlangen91058Germany KeyLab Advanced Fiber Technology Bavarian Polymer InstituteDr.Mack-Strasse 77Fürth90762Germany

High-performance compression sensors have been playing an increasingly important role in human motion detection,health monitoring and human-machine interfaces over recent ***,it remains a great challenge to develop theoretical models providing practical guidance to the sensor ***,carbon black(CB),carbon nanotubes(CNTs)and graphene nanoplatelets(GNPs)were respectively incorporated into porous melamine sponges by a facile approach of dip-coating to fabricate compression *** compression-resistance tests show that the compressibility,stability and piezoresistive sensitivity of sensors could be tailored by the filler type and concentration.A model considering the number of conductive pathways(NCP)is given to describe the relationship between the resistance change and applied compression,showing extremely good agreement with the experimental ***,the correlation between the equivalent filler volume fraction and conductivity is described by the other two models proposed by McLachlan and Kirkpatrick,revealing the electrical percolation thresholds(Φc)for the conductive systems under *** the three fillers,CB particles endowed the composite with the best piezoresistive sensitivity but the largestΦc due to its small size and aspect ratio.A combination of experimental study and theoretical model opens up a way of further understanding the piezoresistive sensing behavior as well as optimizing the electrical property and piezoresistivity of compressive conductive polymer composite.

关键词： Compression sensor Melamine sponge Model Piezoresistivity

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Regulation of influenza virus infection by microRNAs

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Journal of Integrative Agriculture 2019年第7期18卷 1421-1427页

作者： ZOU Zhong GONG Wen-xiao HUANG Kun SUN xiao-mei JIN mei-lin State Key Laboratory of Agricultural Microbiology Huazhong Agricultural UniversityWuhan 430070P R.China College of Veterinary Medicine Huazhong Agricultural UniversityWuhan 430070P.R. China Key Laboratory of Development of Veterinary Diagnostic Products Ministry of Agriculture and Rural AffairsWuhan 430070P.R. China

MicroRNAs(miRNAs) are small noncoding RNAs of 18–25 nucleotides(nt) in length that represent key regulators of many normal cellular functions through the inhibition of mRNA translation and mRNA *** date,over 2 500 mature miRNAs have been identified in plants,animals and several types of *** A virus(IAV),which is a negativesense,single-stranded RNA virus,does not encode viral ***,IAV infection can alter the expression of host miRNAs,either in cell culture or in *** turn,host miRNAs regulate IAV life cycle through directly binding to IAV genome or indirectly targeting host factors associated with viral *** this review,we briefly summarized the role and significance of miRNA in relation to IAV *** the role of cellular miRNAs during viral infection may be beneficial to the identification of novel therapeutic strategies to block IAV replication.

关键词： microRNAs influenza A virus pathogenesis therapeutic strategies

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A New Triterpenoid Glycoside from Dichotomanthes tristaniaecarpa

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Chinese Chemical Letters 2000年第11期11卷 1013-1014页

作者： mei, WL luo, XD Chen, CX Acad Sinica Kunming Inst Bot Lab Phytochem Kunming 650204 Peoples R China

A new triterpenoid glycoside 1, 1 beta, 2 alpha, 3 alpha, 19 alpha -tetrahydroxyurs-12-en-28-oic acid beta -D glucopyranosyl ester was isolated from Dichotomanthes tristaniaecarpa. The structure was elucidated on the ... 详细信息

关键词： triterpenoid glucoside Dichotomanthes tristaniaecarp Rosaceae

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德尔布有孢圆酵母对苹果酒发酵过程风味物质合成的影响

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食品工业科技 2025年第1期46卷 283-291页

作者：肖子一赵玉川罗玲黄丹罗惠波李子健四川轻化工大学生物工程学院四川自贡643000 四川化工职业技术学院四川泸州646300 酿酒生物技术及应用四川省重点实验室四川自贡643000

本研究利用德尔布有孢圆酵母(Torulasporadelbrueckii)与酿酒酵母(Saccharomycescerevisiae)进行苹果酒发酵实验,通过比较混合发酵与酿酒酵母单独发酵过程中有机酸以及挥发性风味物质差异,探究德尔布有孢圆酵母对苹果酒风味物质合成的... 详细信息

本研究利用德尔布有孢圆酵母(Torulasporadelbrueckii)与酿酒酵母(Saccharomycescerevisiae)进行苹果酒发酵实验,通过比较混合发酵与酿酒酵母单独发酵过程中有机酸以及挥发性风味物质差异,探究德尔布有孢圆酵母对苹果酒风味物质合成的影响。结果表明,德尔布有孢圆酵母显著提高了苹果酒中草酸(+0.077 g/L)、乙酸(+1.68 g/L)、L-乳酸(+0.83 g/L)以及琥珀酸(+0.45 g/L)的含量(P<0.01),并减少了苹果酒中高级醇的数量。共现网络分析显示德尔布有孢圆酵母的加入增强了挥发性风味物质合成的稳定性。此外,混合发酵显著提升了苯乙醇、苯甲醛、乙酸苯乙酯、辛酸、己酸等11种挥发性风味物质含量,有助于凸显苹果酒中苹果特征香、花果香,增强蜜甜感。基于差异风味物质通路富集结果,德尔布有孢圆酵母可赋予发酵体系更强的原料利用能力,糖类物质的转化能力以及风味物质合成能力。研究结果表明该菌株有着优异的混合发酵性能,为其在苹果酒酿造中进一步利用提供了依据。

关键词：苹果酒德尔布有孢圆酵母酿酒酵母混合发酵风味物质

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Preconcentration of Ultra-trace Cadmium with Nanometer-size TiO_2 Colloid and Determination by GFAAS with Slurry Sampling

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Chinese Chemical Letters 2006年第7期17卷 933-936页

作者： Sha Hua QIAN Xue Qin LI Han LIN mei xiao Hong Bing DENG luo Jing XIANG College of Resource and Environmental Science Wuhan University Wuhan 430072

A novel method of ultra-trace Cd（Ⅱ） preconcentration with nanometer-size TiO2 colloid and determination by graphite furnace atomic adsorption spectrometry（GFAAS） with slurry sampling was first advanced in this paper. The adsorption efficiency of nanometer-size TiO2 colloid for ultra-trace Cd（Ⅱ） could reach above 96% in a short time when the pH value was between 5 and 6. Other problems were also studied, such as adsorption capacity, nanometer-size TiO2 colloid dosage, effect of coexistent ions. The detection limit（3σ） and the relative standard deviation （R.S.D） of this method were 4.46.103 μg/L and 1.30%（n=7）, respectively. The method was successfully applied to the analysis of environmental samples with recoveries between 93.8% and 96.4%.

关键词： Nanometer-size TiO2 colloid Cd(Ⅱ) GFAAS slurry sampling.

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Innovative dual-mode device integrating capacitive desalination and solar vapor generation for high-efficiency seawater desalination

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Journal of Energy Chemistry 2025年第1期 171-179页

作者： Jiacheng Wang Zhaoyu Chen Ruduan Yuan Jiaxin luo Ben Zhang Keju Ji Meng Li Juanxiu xiao Kuan Sun National Innovation Center for Industry-Education Integration of Energy Storage Technology MOE Key Laboratory of Low-grade Energy Utilization Technologies and SystemsCollege of Energy & Power Engineering Chongqing University Xuefeng Mountain Energy Equipment Safety National Observation and Research Station CQU-NUS Renewable Energy Materials & Devices Joint Laboratory Chongqing University Southwest Technology and Engineering Research Institute Jiangsu Provincial Key Laboratory of Bionic Functional Materials College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University

Solar-driven interface evaporation with high solar-to-steam conversion efficiency has shown great potential in seawater ***,due to the influence of latent heat and condensation efficiency,the water yield from solar-driven interface evaporation remains insufficient,posing a significant challenge that requires *** this work,we designed a dual-mode high-flux seawater desalination device that combines solar-driven interface evaporation and capacitive *** utilizing coupled desalination materials exhibiting both photothermal conversion and capacitance activity,the device demonstrated photothermal evaporation rates of 1.41 and 0.97 kg m-2h-1for condensate water yield under one-sun ***,the device exhibited a salt adsorption capacity of up to48 mg g-1and a salt adsorption rate of 2.1 mg *** addition,the salt adsorption capacity increased by approximately 32% under one-sun ***,photo-enhanced capacitive desalination performance was explored through numerical simulations and theoretical *** calculations and characterizations confirmed that the defect energy levels formed by the introduction of sulfur vacancies can effectively widen the light absorption range,improve photothermal conversion performance,and stimulate more photoelectrons to participate in capacitive ***,the electron distribution state of molybdenum disulfide with sulfur vacancies and surface defect sites contributes to ion/electron transport at the solid-liquid *** work provides a novel pathway for integrating solar vapor generation with other low-energy desalination technologies.

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Conductivity of carbon-based molecular junctions from ab-initio methods

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Frontiers of physics 2014年第6期9卷 748-759页

作者： xiao-Fei Li Yi luo School of Optoelectronic Information University of Electronic Science and Technology of China Chengdu 610054 China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China KTH Royal Institute of Technology School of Biotechnology Division of Theoretical Chemistry and Biology S-106 91 Stockholm Sweden

Carbon nanomaterials （CNMs） are prompting candidates tor next generational electronics. In this review we provide a mini overview of recent results on the conductivity of carbon-based molecular junctions obtained from ab-mitio methods. CNMs used as nanoelectrodes and molecular materials in molecular junctions are discussed. The flmctionalities that include the nanomechanically controlled molecular conductance switches, negative differential resistance devices, and electronic rectifiers realized by using CNMs have been demonstrated.

关键词： carbon nanotubes graphene all-carbon nanodevice quantum transport ab-initio molecular dynamics simulations

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A New Route for Preparation of β-TCP/ PLLA Composite

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Chinese Chemical Letters 2006年第6期17卷 833-836页

作者： Feng ZHANG Fang mei Xin Zhi WANG xiao Yang HU Yong Ming luo Xu Liang DENG School and Hospital of Stomatology Peking University Beijing 100081 Department of Histology and Embryology Health Science Center Peking University Beijing 100083 Department of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650093 The 2nd Hospital of Beijing Armed Police Forces Beijing 100037

A new facile route for preparation of β-TCP/PLLA composites is reported in this letter. SEM images display that β-TCP particles with average diameter of 400 nm were well bonded and distributed within the pore walls of the PLLA scaffolds. The mixture of the novel complex and human dental pulp cells was transplanted subcutaneously into the dorsal surface of a nude mouse. Two months later histological examination showed that new collagen and new dentin formed. The results revealed that the new nano β-TCP/PLLA composite combined with human pulp cells could induce dentin formation offering a new way to dental tissue engineering.

关键词： β-TCP particles β-TCP/PLLA composite dental pulp cells dental tissue engineering.

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Microstructure and mechanical properties of Ti-Cu amorphous coating synthesized on pure Cu substrate by mechanical alloying method

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Rare Metals 2020年第10期39卷 1222-1228页

作者： Cheng Chen xiao-mei Feng Yi-fu Shen School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211800China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Mechanical alloying method was applied to fabricate coating with amorphous structure on pure Cu *** microstructure,the phase composition and the mechanical properties including microhardness and wear resistance of the coating were,respectively,characterized and *** results show that the coating is rough but *** has favorable adhesion to the *** coating is made up of an inner composite layer and an outer amorphous *** microhardness and the wear resistance of the pure Cu substrate are improved because of the bilayer *** formation mechanism of the coating was *** as-synthesized coating is considered to be effective to strengthen the surface of pure Cu substrate.

关键词： Coating Amorphous Mechanical alloying Surface reinforcement

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Crop residue incorporation and nitrogen fertilizer effects on greenhouse gas emissions from a subtropical rice system in Southwest China

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Journal of Mountain Science 2018年第9期15卷 1972-1986页

作者： WANG xiao-guo luo Yong Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and Environment Chinese Academy of Sciences Key laboratory of Geological Spatial information Technology of Ministry of Land and Resource Chengdu University of Technology

Crop residue incorporation has been widely accepted as a way to increase soil carbon(C) sequestration and sustain soil fertility in agroecosystems. However, effect of crop residue incorporation on greenhouse gas(GHG) emissions in rice paddy soils remains uncertain. A field experiment was conducted to quantify emissions of CH_4 and N_2O and soil heterotrophic respiration(RH) from a paddy rice field under five different crop residue treatments(i.e., 150 kg N ha^(-1) of synthetic N fertilizer application only [NF], 150kg N ha^(-1) of synthetic N fertilizer plus 5.3 Mg ha^(-1) wheat residue [NF-WR1], 150 kg N ha^(-1) of synthetic N fertilizer plus 10.6 Mg ha^(-1) wheat residue [NF-WR2], 75 kg N ha^(-1) of synthetic N fertilizer plus 10.6 Mg ha^(-1) wheat residue [50%NF-WR2] and 150 kg N ha^(-1) of synthetic N fertilizer plus 21.2 Mg ha^(-1) wheat residue [NF-WR3]) in southwest China. Our results showed that crop residue incorporation treatments(NF-WR1, NF-WR2, 50%NF-WR2, NF-WR3) significantly increased CH_4 emissions by at least 60%, but N_2O emissions were not enhanced and even suppressed by 25% in the NF-WR3 treatment as compared to the NF treatment. Soil RH emissions were comparable among experimental treatments, while crop residue incorporation treatments significantly increased soil carbon sequestrations relative to the NF treatment. Overall, CH_4 emissions dominated total global warming potentials(GWP) across all experimental treatments. The average yieldscaled GWPs for the NF and NF-WR1 treatments were significantly lower than for the NF-WR2, 50%NFWR2 and NF-WR3 treatments. Given the comparable yield-scaled GWPs between the NF and NF-WR1 treatments, the NF-WR1 treatment could gain net carbon sequestration as compared with the NF treatment with net soil carbon loss. Our findings suggest that the NF-WR1 treatment should be an effective option to sustain rice production while mitigating GHG emissions from the rice field in China.

关键词： Methane Nitrous oxide Crop residueSoil carbon sequestration Global warming potentialPaddy field

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