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Retention Behaviors of Uronic Acid-containing Polysaccharides and Neutral Polysaccharides in HPGPC

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Chinese Chemical Letters 2001年第10期12卷 909-912页

作者： liu, cp Bao, XF Fang, JN Chinese Acad Sci Shanghai Inst Biol Sci Shanghai Inst Mat Med Shanghai 200031 Peoples R China

The chromatographic behaviors of several uronic acid-containing polysaccharides and neutral polysaccharides were investigated in HPGPC for the first time. The effects of sample concentration and ionic strength of mobile phase on retention time were studied. The mechanism for the effects on Mw determination results of polysaccharides by HPGPC was also discussed.

关键词： polysaccharides HPGPC molecular weights

Measurement and Calculation of Quenching Rate Constants for PCl(b)

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Chinese Chemical Letters 1996年第12期7卷 1125-1126页

作者： Zou, SL liu, cp Guo, JZ Gu, YS Chu, YN Cao, DZ SHANDONG UNIV DEPT CHEMJINAN 250100PEOPLES R CHINA ACAD SINICA ANHUI INST OPT & FINE MECHLASER SPECT LABHEFEI 230031PEOPLES R CHINA

Using the Ar(P-3(0.2)) +PCl3 reaction as a source of PCl(b(1) Sigma(+)). We have measured the quenching rate constants of PCl(b) for 23 reagents. The E -V model is used to calculate the rate constants. The comparison ... 详细信息

关键词： Measurement and Calculation of Quenching Rate Constants for PCl

Experimental Research on a Feasible Building Insulation Material Based Reed in China

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Journal of Thermal Science 2025年第1期34卷 176-187页

作者： liu Tiantian PENG Yizhe liu Lifang CAI Chenghan WANG Shuang LI Hongqiang College of Civil Engineering Hunan University College of Civil Engineering Hunan University of Science and Technology School of Energy and Power Jiangsu University of Science and Technology National Center for International Research Collaboration in Building Safety and Environment (NCIRCBSE) Hunan University Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education Hunan University

The seemingly useless reeds are prepared as thermal insulation materials,which not only meet the requirements of environmental sustainability but also enhance the added value of reeds,creating new economic *** hydrophobicity of raw biomass surfaces leads to problems such as weak bonding strength and non-dense structure in the formed materials,as well as issues related to the residual insect infestations on the *** this study,reed straw was used as the raw material,and foamed geopolymer was used as the binder to prepare building insulation materials based *** improve the interfacial adhesion performance between reed straw and foamed geopolymer,a thermochemical modification method-thermal carbonization,was *** this study,the mechanical properties and hydraulic properties of the studied materials with different degrees of surface thermal modification were tested,especially the fire resistance performance,and weathering resistance performance rarely found in published *** the surface thermal modification condition of reed straw was 250℃（30 min）,the comprehensive performance of reed-based building insulation materials was the best,when the studied material density was 321.3 kg/m3;the compressive strength was 0.59 MPa;the thermal conductivity was 0.101 W/（m·K）;the pH was 11.27;the moisture absorption rate was 25.1%,and the compressive strength loss rate in wet-dry cycles was 18.5%.In addition,it had excellent fire resistance performance and weathering resistance *** new material can be widely used to improve the thermal insulation of traditional buildings and as sandwich filler in prefabricated buildings,such as preparing insulating walls.

关键词： building insulation material based reed fire resistance performance interface adhesion properties pre-treatment of reeds weathering resistance performance

Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： Xinyuan Wang Fan Zhang Xingyu Zhou Qian Wang Changyu liu Yangyang liu Hui Wang Xiaojie liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate Cathode

Post-tunable salt gel electrolytes toward flexible supercapacitor switches

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Journal of Energy Chemistry 2025年第1期100卷 114-124页

作者： Hui Wang Shuang Chen Xuming liu Qin Zhang Xin liu Polymeric and Soft Materials Laboratory School of Chemistry and Life Science and Advanced Institute of Materials Science Changchun University of Technology Polymeric and Soft Materials Laboratory School of Chemical Engineering and Advanced Institute of Materials Science Changchun University of Technology

Convertible hydrogel supercapacitors have emerged as promising energy storage devices in switches,diodes, and transistors. However, inherent weaknesses in ionic conductivity, mechanical properties,and water retention of hydrogel electrolytes seriously hinder their development. Inspired by the hardness conversion of sea cucumber skin, a conductivity and mechanics dual-tunable salt gel electrolyte is successfully designed. The salt gel presents a reversible switching of conductors-insulators and a mechanical regulation between softness and hardness via the dissolution-crystallization transition of sodium acetate trihydrate（SAT）. Meanwhile, the salt gels spontaneously grow a layer of “armor” through saturated phase-change salt crystals effectively reducing water evaporation of hydrogel ***, this phase-change soft-rigid conversion strategy will expand the capabilities of gel-based flexible supercapacitors(area capacitance: 258.6 mF cm-2), and the capacitance retention rate could still reach 86.9% after 3000 cycles at high temperatures. Moreover, the salt gel supercapacitor is potentially used in over-heat alarm systems. It is anticipated that the strategy of conductivity and mechanics of dual-tunable salt gel would provide a new perspective on the development of energy storage devices,wearable electronics, and flexible robots.

关键词： Capacitance

中药复方制剂消可宁对高糖诱导大鼠肾小球系膜细胞增殖的影响

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中国组织工程研究与临床康复 2007年第12期11卷 2371-2374页

作者：魏群利陆晓和汤淏刘翠萍刘超解放军南京军区南京总医院制剂科江苏省南京市210002 南京医科大学第一附属医院内分泌科江苏省南京市210029

目的:观察中药复方制剂消可宁对高糖培养的大鼠肾小球系膜细胞增殖的抑制作用。方法:实验于2004-04/11在南京医科大学第一附属医院内分泌代谢研究中心细胞培养研究室完成。①中药复方制剂消可宁(由制大黄、制附子、生黄芪组成,南京军区... 详细信息

目的:观察中药复方制剂消可宁对高糖培养的大鼠肾小球系膜细胞增殖的抑制作用。方法:实验于2004-04/11在南京医科大学第一附属医院内分泌代谢研究中心细胞培养研究室完成。①中药复方制剂消可宁(由制大黄、制附子、生黄芪组成,南京军区南京总医院制剂科生产,药品批号:院临(2003)第01017号,规格为90mL/袋)。大鼠系膜细胞株HBZY-1购自武汉大学中国典型培养物保藏中心。②将购入的系膜细胞株消化培养,取培养4～8代的细胞,吸去培养瓶中的上清液,消化离心后混匀,锥虫蓝染色观察细胞活性。③不同刺激时间系膜细胞增殖实验设立3组,正常糖浓度组每孔加入5.6mmol/L葡萄糖溶液200μL,高糖对照组每孔加入30mmol/L葡萄糖溶液200μL,高糖+消可宁组每孔加入30mmol/L葡萄糖与0.06g/mL消可宁混合液200μL,6孔/组。各组分别于培养24,48,72h后向板孔中加5g/L的4-甲基偶氮四唑蓝20μL,于酶标仪492nm波长处检测吸光度值。④不同浓度消可宁刺激高糖环境下系膜细胞增殖实验设立7组,高糖对照组每孔加入30mmol/L葡萄糖溶液200μL,消可宁20,40,60,80,120,200g/L组每孔加入30mmol/L葡萄糖+对应浓度的消可宁混合液200μL,6孔/组。培养72h后各组向板孔中加5g/L的4-甲基偶氮四唑蓝20μL,同法检测吸光度值。结果:①系膜细胞活性观察:原代培养的4～8代系膜细胞,经锥虫蓝染色,着色的死亡细胞数95%。②不同刺激时间各组系膜细胞增殖情况的比较:与正常糖浓度组比较,高糖对照组于高糖刺激24h即可促进系膜细胞的增殖,且这种作用在刺激48h时最为明显,至72h细胞数量开始减少,但仍明显高于正常糖浓度组(0.527±0.047,0.659±0.018,P<0.05)。与高糖对照组比较,高糖+消可宁组在24h内并未表现出抑制系膜细胞增殖的作用,而刺激48h后显示出抑制趋势,但差异无显著性意义,于72h后表现出较强的抑制系膜细胞增殖的效应(0.659±0.018,0.538±0.023,P<0.05)。③不同浓度消可宁刺激对高糖环境下系膜细胞增殖的影响:刺激72h后与高糖对照组比较,20,40g/L的消可宁能够部分阻止系膜细胞的增殖;60,80g/L的消可宁则表现出明显阻止高糖对系膜细胞的过度刺激作用,且随着浓度的增加,抑制作用逐渐增强;浓度升至120g/L时出现细胞脱落死亡,高达200g/L时则不见存活的细胞。结论:消可宁能够有效抑制高糖诱导的系膜细胞增殖,可能是其早期防治糖尿病肾病的细胞学基础。

关键词：糖尿病肾病/中药疗法肾小球膜/细胞学细胞增殖

Economic effect of China's carbon neutrality target under shared socioeconomic pathways

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Science China Earth Sciences 2025年第1期68卷 142-157页

作者： Zemiao liu Xianjin HUANG Xinxian QI School of Geography and Ocean Science Nanjing University Key Laboratory of Carbon Neutrality and Territory Optimization Ministry of Natural Resources Frontiers Science Center for Critical Earth Material Cycling Nanjing University

Economic feasibility is crucial for achieving the carbon neutrality target. However, current integrated assessments often underestimate the economic impacts of mitigation policies due to the lack of consideration of their economic benefits. This study integrates a warming-labour productivity model with a typical integrated assessment model using shared socioeconomic pathways. It simulates China's economic development and carbon emission levels under both baseline and carbon-neutral policy scenarios, evaluating the economic costs and benefits of emission reduction policies aimed at achieving carbon neutrality. These findings reveal the following:(1) The economic costs of emission reduction policies are projected to peak between 2050 and 2060, ranging from 0.41% to 9.37% of total GDP in the baseline scenario, primarily due to increased energy prices and R&D investments. These costs are expected to decline rapidly after 2070.(2) China's carbon-neutral policies will mitigate global warming, with the economic benefits of mitigation projected to reach 5.65% to 17.24% of China's total GDP by 2100.(3) Lowcarbon scenarios SSP1 and SSP4 could significantly reduce initial economic costs and advance the onset of net economic gains to 2060. This integrated assessment confirms that China's carbon neutrality target offers substantial net economic benefits in the long term. To minimize initial economic costs, efforts should focus on enhancing consumption-side transitions, upgrading lowcarbon technologies, and adopting new energy sources.

关键词： Climate change China Carbon neutrality Economic effects Policy

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Oxidation Resistance of Form-stable Hightemperature Phase Change Thermal Energy Storage Materials Doped by Impregnated Graphite

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 1-12页

作者： LI Baorang DAI Jianhuan ZHANG Wei liu Xiangchen YANG liu School of Energy Power and Mechanical Engineering North China Electric Power UniversityBeijing 102206China School of Ener-gy and Environment Southeast UniversityNanjing 210096China

We adopted the solution impregnation route with aluminum dihydrogen phosphate solution as liquid medium for effective surface modification on graphite *** mass ratio of graphite to Al(H_(2)PO_(4))_(3) changed from 0.5:1 to 4:1,and the impregnation time changed from 1 to 7 *** typical composite phase change thermal storage materials doped with the as-treated graphite were fabricated using form-stable *** investigate the oxidation and anti-oxidation behavior of the impregnated graphite at high temperatures,the samples were put into a muffle furnace for a cyclic heat *** on SEM,EDS,DSC techniques,analyses on the impregnated technique suggested an optimized processing conditions of a 3 h impregnation time with the ratio of graphite:Al(H_(2)PO_(4))_(3) as 1:3 for graphite impregnation *** investigations on high-temperature phase change heat storage materials doped by the treated graphite suggested excellent oxidation resistance and thermal cycling performance.

关键词： phase change materials graphite impregnation method oxidation,sintering thermal analysis

Engineering nanoparticle structure at synergistic Ru-Na interface for integrated CO2 capture and hydrogenation

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Journal of Energy Chemistry 2025年第1期100卷 779-791页

作者： Hanzi liu Ling Cen Xinlin Xie Lei liu Zhao Sun Zhiqiang Sun Hunan Engineering Research Center of Clean and Low-Carbon Energy Technology School of Energy Science and Engineering Central South University

The development of dual functional material for cyclic CO2capture and hydrogenation is of great significance for converting diluted CO2into valuable fuels,but suffers from kinetic limitation and deactivation of adsorbent and ***,we engineered a series of RuNa/γ-Al2O3materials,varying the size of ruthenium from single atoms to clusters/*** coordination environment and structure sensitivity of ruthenium were quantitatively investigated at atomic *** findings reveal that the reduced Ru nanoparticles,approximately 7.1 nm in diameter with a Ru-Ru coordination number of 5.9,exhibit high methane formation activity and selectivity at 340°*** Ru-Na interfacial sites facilitate CO2migration through a deoxygenation pathway,involving carbonate dissociation,carbonyl formation,and ***-situ experiments and theoretical calculations show that stable carbonyl intermediates on metallic Ru nanoparticles facilitate heterolytic C–O scission and C–H bonding,significantly lowering the energy barrier for activating stored CO2.

关键词： Carbon capture and utilization