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Chinese Chemical Letters 2023年第6期34卷 583-587页

作者： Xiali Xiong Wei Geng Minna cao rong cao State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy SciencesFuzhou 350002China College of Chemistry Engineering Fuzhou UniversityFuzhou 350108China University of Chinese Academy of Sciences Beijing 100049China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

Developing efficient and stable electrocatalyst to hydrogen evolution reaction adaptable for electrolytes with different p H is a big *** this work,a hierarchically structured ternary nanohybrid composed of flower-like Ru nanoparticles,rigid macrocyclic cucurbit[6]uril(CB[6])and carboxylated multiwalled carbon nanotubes(MWCNTs)was successfully prepared by chemical wet *** by the structural merits of flower-like Ru nanoparticles exposed abundant active sites supported by the MWCNTs holding superior mass transport and electrons transfer ability as well as the existence of CB[6],the obtained catalyst exhibited outstanding HER activities with overpotentials of 27,37 and 70 m V at-10 m A/cm^(2) in alkaline,acidic,and neutral electrolytes,*** the same electrocatalytic operation conditions,the HER performance is comparable or superior to commercial Pt/C catalyst(47,27and 49 m V).Besides,chronopotentiometric and accelerated stability test also revealed its extraordinary stability,which could be further employed for electrocatalytic procedure in a broad pH range.

关键词： Ruthenium Cucurbit[n]uril Hierarchical structure Hydrogen evolution reaction pH-universal

鄂尔多斯盆地华池地区三叠系长7页岩油储层特征、形成环境及富集模式

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岩性油气藏 2025年第1期37卷 24-40页

作者：梁锋曹哲延长油田股份有限公司吴起采油厂

通过对鄂尔多斯盆地华池地区三叠系长7段钻井岩心进行岩石学特征以及元素地球化学测试分析，采用V/（V+Ni）,Ni/Co,U/Th,Sr/Cu,cao/（MgO*Al2O3）,Sr/Ba,Fe/Mn,Mn/Ti,Babio值和P/Al值等多种判别标准，并结合总有机碳的含量，进行古环境... 详细信息

通过对鄂尔多斯盆地华池地区三叠系长7段钻井岩心进行岩石学特征以及元素地球化学测试分析，采用V/（V+Ni）,Ni/Co,U/Th,Sr/Cu,cao/（MgO*Al2O3）,Sr/Ba,Fe/Mn,Mn/Ti,Babio值和P/Al值等多种判别标准，并结合总有机碳的含量，进行古环境分析，恢复了沉积期的古气候、古盐度和古氧化还原条件等。研究结果表明：（1）鄂尔多斯盆地华池地区三叠系长7段岩石主要为深灰色泥岩、深灰色灰质泥岩及含炭屑的粉砂质泥岩、富含有机质的粉砂质泥岩，黏土矿物晶间孔与粒间孔是主要的孔隙类型，可见少量溶蚀孔和微裂缝。（2）研究区延长组长7沉积时期，有机质生产力强，环境以淡水为主且处于贫氧到缺氧状态，其中长72—长73亚段沉积时期，部分水体较深的区域出现极强的还原条件，主要为温湿气候。整体上为深水环境，长72亚段沉积时位于深水区的边界地带，其水深明显较长71与长73亚段更深，P/Al值以及Babio值总体上变化趋势一致，自下而上具有逐渐增大的趋势。（3）研究区延长组长7段古沉积环境具备适宜的温度和盐度条件，与深水和强还原性特征共同促进了有机质的广泛发育、富集和保存，源岩与储层之间通过裂缝连通，离源岩较近的储层，其捕获原油的数量和效率更高，这种源储配置为页岩油的大规模富集成藏奠定了坚实的基础。

关键词：页岩油储层元素地球化学古环境古生产力有机质富集源储配置长7 三叠系华池地区鄂尔多斯盆地

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Effects of B_2O_3 and CaF_2 on Melting Temperatures of cao-SiO_2-Fe_2O_3 System Fluxes

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Journal of Iron and Steel Research International 2013年第6期20卷 21-24页

作者： WANG Hong-ming YANG Li-li LI Gui-rong ZHU xiang ZHU Hua ZHAO Yu-tao School of Materials Science and Engineering Jiangsu University Jiangsu Shasteel Group

Fluorite is widely employed as fluxing agent in metallurgy flux , which inevitably leads to serious fluorine pollution.B2O3 is employed as fluxing agent of cao-SiO2-Fe2O3steelmaking fluxes to substitute for *** effects of B2O3 and CaF2 on the melting properties of this system were *** melting temperatures of fluxes including softening temperature （Ts）, hemispherical temperature （Th）, and flow temperature （Tf） were measured using the hemisphere *** results indicate that the fluxing effect of B2O3is more significant than that of CaF2 .When the addition amount of B2O3 （mass percent） exceeds 6% , the melting temperatures of fluxes including Ts , Th and Tf are decreased lower than 1 300℃.The basicity of fluxes has a significant effect on the melting temperature , and the melting temperatures of the fluxes increase with the increase of fluxes *** , when B2O3 is used as fluxing agent , the melting temperature changes little with the basicity increasing from 2.5 to 5.0. These characteristics are suitable for steelmaking *** , Fe2O3 has an important fluxing effect on this cao-based steelmaking *** indicates that the fluxes system is suitable for steelmaking process.

关键词： boron oxide calcium fluoride melting temperature cao-SiO2-Fe2O3 system steelmaking flux

Asymmetric interfacial engineering regulated charge distribution on Ru/Ni-N-C sites for efficient hydrogen evolution reaction in alkaline and seawater electrolytes

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Science China Chemistry 2025年

作者： Rui Yu Xi cao Chengyang Zhu Qingqing Chen Ziyi Yan Binbin Jiang Junjie Mao Xianwen Wei Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes College of Chemistry and Materials ScienceAnhui Normal University Anhui Provincial Key Laboratory of Advanced Catalysis and Energy Materials School of Chemistry and Chemical Engineering Anqing Normal University School of Chemistry and Chemical Engineering Anhui University of Technology

Developing highly efficient and cost-effective electrocatalysts for hydrogen evolution reaction（HER） is grandly challenging in alkaline and alkaline seawater electrolytes. Herein, the asymmetric interfacial active sites with Ru nanoparticles and Ni single atoms in Ru/Ni-N-C were designed through a solvothermal-pyrolysis process. Constructing highly asymmetric interfacial active sites with a strong electron delocalization effect significantly improves HER kinetics. As expected, Ru/Ni-N-C requires low overpotentials with around 20 mV at 10 mA cm-2and robust durability over 48 h in alkaline and alkaline seawater *** at 200 mA cm-2, the overpotentials are close to 100 mV in both above electrolytes for Ru/Ni-N-C. Density function theory calculation results suggest that the asymmetric interface between Ru nanoparticle and Ni-N-C could accelerate the dissociation of water molecules and modulate the hydrogen species, consequently improving the HER performances. This work opens a unique approach for constructing advanced materials for energy conversion.

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Promoted Comprehensive Properties of Polyisoprene Rubber with Extremely High Fatigue Resistance Enabled by Oligopeptide Aggregates

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Chinese Journal of Polymer Science 2023年第8期41卷 1250-1260,I0008页

作者： Yu He Ran Xu rong Zhang Chang-Cheng Wang Shi-Qi Li Jian cao Mao-Zhu Tang Yun-xiang Xu College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China

For decades,the preparation of polyisoprene rubber that can match the comprehensive properties of natural rubber(NR)has been *** sacrificial bonds have been used to promote the strength and toughness of rubbers,little is known about their effects on fatigue resistance,which is important in dynamic ***,terminal block and randomly functionalized polyisoprene rubbers tethered with di-alanine,tri-alanine and tetra-alanine were *** results showed that the flow activation energy,aggregates ordering and energy dissipation of the hydrogen-bonded aggregates increase with the elongation of oligopeptide length(XA,X=2,3,4),therefore resulting in enhanced mechanical strength and toughness of corresponding ***,the tear strengths are barely affected by oligopeptide lengths in block samples,but promoted from dipeptide to tetrapeptide in random samples,probably due to the well dispersed oligopeptide *** importantly,it is found that the tight binding aggregates of oligopeptides are critical for the excellent fatigue resistance,which is absent in polyisoprene and natural *** loose aggregates dissociate and recombine repeatedly under cyclic loading and the tight aggregates keep the network integrated and ***,the largest hysteresis of PIP-4A-V with the longest oligopeptide length give the lowest heat generation,which is contrary to the traditional sacrificial ***,the oligopeptide aggregates have repeatable energy dissipation properties and cycle life comparable to or even surpassing those of the linked proteins in NR,resulting in similar tensile strength,fracture toughness,and better fatigue resistance relative to *** deep insight on the role of oligopeptide aggregates is very useful for the engineering rubbers served in dynamic environments.

关键词： Polyisoprene Hydrogen bonding Oligopeptides Fatigueresistance

Effects of source facies and maturity on individual carbon isotopic compositions of oil

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Geoscience Frontiers 2024年第5期15卷 210-221页

作者： Jingkun Zhang Jian cao Baoli xiang State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China MOE Key Laboratory of Surficial Geochemistry School of Earth Sciences and EngineeringNanjing UniversityNanjing 210023China Research Institute of Experiment and Testing PetroChina Xinjiang Oilfield CompanyKaramayXinjiang 834000China

Carbon isotopes have been used extensively in tracing the sources of ***,primary source facies and secondary alteration controls on oil isotopic compositions have not been well resolved,resulting in application uncertainties.A case study was undertaken for an alkaline lacustrine oil system in a lower Permian formation in the Junggar Basin,NW *** indicate that increasing maturity causes the carbon isotopic composition to become heavier for only short–middle-chain compounds,whereas source facies-related carbon assimilation controls the compositions of short-,middle-,and long-chain *** particular,light-carbon assimilation during organic-matter degradation makes the isotopic composition lighter,whereas heavy carbon from the water mass makes it ***,oils in this study area were divided into Type U and Type N oils based on individual compound carbon isotopic compositions,reflecting the difference in source facies in a highly saline and reducing stratified water *** results provide a better understanding of the controls on carbon isotopes in oil in sedimentary basins,reducing the uncertainty in oil–source correlation and addressing the origin of oil.

关键词： Carbon assimilation Water stratification Carbon isotopes Alkaline lacustrine Junggar Basin

Sandwich-like QDs/MOFs films for selective sensing and multicolor emitting

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Chinese Chemical Letters 2022年第8期33卷 4013-4016页

作者： Ruding Zhang Shuiying Gao rong cao State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterThe Chinese Academy of SciencesFuzhou 350002China University of the Chinese Academy of Sciences Beijing 100049China

A novel type sandwich-like composite films composed of ZIF-8 and CdTe QDs were successfully constructed through facile layer-by-layer assembly strategy and their potential applications were also *** on the limitation effects of the aperture of ZIF-8,CdTe QDs/ZIF-8 fluorescent composite films exhibit obvious selective optical response toward hydrogen peroxide and folic ***,tunable colorful light emission composite films in the red-green region are obtained through incorporating two different sized QDs and ZIF-8 films into one composite films.

关键词： CdTe QDs ZIF-8 films QDs/MOFs luminescent composite films Selective sensing Multicolor emission

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重组猪α干扰素的亲和层析

上海农业学报 2007年第4期23卷 31-33页

作者：邵菁于瑞嵩董世娟朱于敏沈世缘曹祥荣李震上海市农业科学院畜牧兽医研究所上海201106 南京师范大学生命科学学院南京201197

真核系统表达的猪α干扰素(PoIFN-α)发酵液,经离心、收集上清液、透析过滤处理,通过FPLC-HisTrap HP Kit亲和层析系统分离纯化,最后以SDS-PAGE银染法检验。结果表明,在不同pH和NaCl浓度情况下,发酵液经亲和层析系统分离纯化后均可以得... 详细信息

真核系统表达的猪α干扰素(PoIFN-α)发酵液,经离心、收集上清液、透析过滤处理,通过FPLC-HisTrap HP Kit亲和层析系统分离纯化,最后以SDS-PAGE银染法检验。结果表明,在不同pH和NaCl浓度情况下,发酵液经亲和层析系统分离纯化后均可以得到较为单一的目的蛋白组分,而在pH8.2,NaCl0mmol/L的情况下得到的目的蛋白更纯,且非特异性吸附也较少。

关键词：重组猪α干扰素(PoIFN-α) 亲和层析

An Injectable Hydrogel with or without Drugs for Prevention of Epidural Scar Adhesion after Laminectomy in Rats

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Chinese Journal of Polymer Science 2016年第2期34卷 147-163页

作者： Lin Chen xiang-qian Li Lu-ping cao Xi-lei Li Jun-rong Meng 董健俞麟 Jian-dong Ding State Key Laboratory of Molecular Engineering of Polymers&Department of Macromolecular Science Fudan UniversityShanghai 200433China Department of Orthopaedic Surgery Zhongshan HospitalFudan UniversityShanghai 200032China

Epidural scarring occurs inevitably in the defect after spinal laminectomy, and thus how to prevent or reduce it becomes a challenging topic. In the present study, an injectable hydrogel and its dexamethasone （DEX）-loaded hydrogel systems were adopted to prevent epidural scarring in a postlaminectomy rat model. The hydrogel system composed of poly（D,L-lactic acid-co-glycolic acid）-poly（ethylene glycol）-poly（D,L-lactic acid-co-glycolic acid）（PLGA-PEG-PLGA） triblock copolymers was a free-flowing sol at room temperature, and spontaneously turned into a semi-solid gel at body temperature. A lumbar 3 total laminectomy was performed on Sprague Dawley （SD） rats, and the efficacy of the injectable hydrogel with or without drugs in preventing epidural scar formation was evaluated via the gross anatomical observation and histological examination at one month post-surgery. The results demonstrate that the use of hydrogel alone reduced epidural scarring significantly, whereas the efficacy of the DEX-loaded hydrogels presented an irregular dose-dependency of drug and even the inappropriate drug doses resulted in the negative results. Therefore, the present study confirms that the PLGA-PEG- PLGA hydrogel holds potential as a barrier device to decrease peridural scarring, and reveals that the sustained delivery of the steroid hormone DEX to prevent surgery-related adhesions in the laminectomy defect is complex. Moreover, our in vivo studies also remind the researchers to pay attention to the irregular dose-dependency of the hormone drugs.

关键词： Thermo-reversible hydrogel Epidural scarring Laminectomy Steroid hormone.

Hot Corrosion Resistance of TB8 Titanium Alloy after ECAP and Heat Treatment

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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1440-1448页

作者： LI Shuaidi XU Xiaojing BAI xiang cao Bin Institute of Advanced Manufacturing and Modern Equipment Technology Jiangsu UniversityZhenjiang 212013China

The metastableβtitanium alloy TB8(Ti-12.76Mo-2.13Nb-2.73A1-0.16Si)was used as the original material,and the secondary processing method combining equal channel angular pressing(ECAP)and heat treatment was *** the help of optical microscope(OM),scanning electron microscope(SEM)and X-ray diffractometer(XRD),the corrosion behavior of TB8 titanium alloy after different secondary processing(800℃/850℃solid solution-520℃aging,ECAP-800℃/850℃solid solution-520℃aging,and800℃/850℃solid solution-ECAP-520℃aging)was *** experimental results show that the hot corrosion products of the six samples are similar,mainly Na_(2)Si_(2)O_(5),MoS_(2),TiCl_(2),Ti(SO_(4))_(2),and *** to the grains of the TB8 titanium alloy treated by 850℃solid solution-ECAP-520℃aging are obviously refined,the surface structure is the most smooth and dense,forming a continuous Al2O3protective film,and the surface defects are the least after *** corrosion layer thickness is the lowest(102.3μm),only 36.5%-81.4%of that of other secondary processing titanium *** addition,the corrosion kinetics curves of the six materials all follow parabolic laws,and the minimum corrosion weight gain of the samples after 850℃solutionECAP-520℃aging treatment is 0.7507 mg·mm^(-2),showing better hot corrosion resistance.

关键词： TB8 ECAP heat treatment hot corrosion resistance