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Journal of Advanced Ceramics 2024年第6期13卷 769-779页

作者： Shijie Chen Mengfan Bao Yanggang Jia Pengpeng wang Dan Wei Yuhuan Guo Jie Tan aiqin Mao Advanced Ceramics Research Center School of Materials Science and EngineeringAnhui University of TechnologyMa’anshan 243032China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Anhui University of Technology) Ministry of EducationMa’anshan 243032China

The present work aims to create lattice distortion and optimize the surface oxygen vacancy(OV)concentration in a model spinel(Co_(0.2)Cr_(0.2)Fe_(0.2)Mn_(0.2)Ni_(0.2))_(3)O_(4)high-entropy oxide(HEO)through a heteroatom La^(3+)doping *** demonstrated,La^(3+)with a large radius can be doped successfully into the spinel lattice of(Co_(0.2)Cr_(0.2)Fe_(0.2)Mn_(0.2)Ni_(0.2))_(3)O_(4),thereby not only causing lattice distortion to increase oxygen vacancies but also refining crystalline grains and improving the specific *** with the(Co_(0.2)Cr_(0.2)Fe_(0.2)Mn_(0.2)Ni_(0.2))_(3)O_(4)anode,the(La_(0.01)CoCrFeMnNi)_(3/5.01)O_(4) anode with moderate doping exhibits excellent cycling performance(1228 mAh·g^(−1)after 400 cycles at 0.2 A·g^(−1))and yields an increase of 75%rate capability at 3 A·g^(−1)(420 mAh·g^(−1)at 3 A·g^(−1)).The desirable kinetic transport of electrons and diffusion of Li+within the moderately La^(3+)-doped anode and the synergistic interfacial pseudocapacitive behavior satisfy the redox reaction at a high rate,thus increasing rate capability.

关键词： lithium-ion battery(LIB) anode lattice distortion high-entropy oxide(HEO) high-rate performance La^(3+)doping oxygen vacancy(OV)

Preparation, Characterization and Drug-Release Behaviors of Crosslinked Chitosan/Attapulgite Hybrid Microspheres by a Facile Spray-Drying Technique

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Journal of Biomaterials and Nanobiotechnology 2011年第3期2卷 250-257页

作者： Qin wang Jie Wu Wenbo wang aiqin wang 不详

A series of chitosan/attapulgite (CTS/APT) hybrid microspheres were prepared by a facile spray-drying technique. The developed hybrid microspheres were characterized by Fourier transform infrared spectra (FTIR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and the zeta potential. The encapsulation efficiency and in vitro controlled release properties of the microspheres for drug were evaluated using diclofenac sodium (DS) as a model drug. Results indicated that the introduction of APT into crosslinked CTS microspheres can achieve narrow size distribution and make them more uniform. The isoelectric point of the microspheres increased from 8.14 to 9.18 with increasing the content of APT to 10 wt.%. DS loaded in hybrid microspheres is hardly released in simulated gastric fluid, but quickly released in simulated intestinal fluid. The electrostatic interaction between hybrid microspheres and DS can improve the encapsulation efficiency and controlled release behavior of CTS/APT microspheres, and the release mechanism fits Fickian diffusion.

关键词： microsphere chitosan attapulgite spray drying controlled release

Adsorption/reaction energetics measured by microcalorimetry and correlated with reactivity on supported catalysts: A review

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Chinese Journal of Catalysis 2016年第12期37卷 2039-2052页

作者：李林林坚李筱玉王爱琴王晓东张涛中国科学院大连化学物理研究所催化基础研究国家重点实验室辽宁大连116023 中国科学院大学北京100049

The formations and transformations of the chemical bonds of reactants and intermediates on cata- lyst surfaces occur in conjunction with the evolution of heat during catalytic reactions. Measure- ment of this evolved heat is helpful in terms of understanding the nature of the interactions be- tween the catalyst and the adsorbed species, and provides insights into the reactivity of the catalyst. Although various techniques have previously been applied to assessments of evolved heat, direct measurements using a Tian-Calvet microcalorimeter are currently the most reliable method for this purpose. In this review, we summarize the relationship between the adsorption/reaction energetics determined by microcalorimetry and the reactivities of supported catalysts, and examine the im- portant role of microcalorimetry in understanding catalytic performance from the energetic point of view.

关键词： Catalysis Microcalorimetry Reactivity Energetics Binding strength Catalyst characterization

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隆安县砂仁种植现状调查及发展建议

南方农业 2024年第5期18卷 145-150页

作者：赵海迪林伟朱艳霞何龙飞王爱勤肖冬韦坤华广西大学农学院广西南宁530004 广西壮族自治区药用植物园/国家中医药传承创新中心/广西药用资源保护与遗传改良重点实验室/广西壮族自治区中药资源智慧创制工程研究中心广西南宁530023

砂仁是我国传统中药材,是“四大南药”之一,具有药食同源的特性(是药食同源植物),有多种保健功效。对砂仁种植现状的调查分析可以为药材产业发展提供决策性意见,最终促进农民增收和乡村振兴。广西隆安县的气候和地理条件适宜砂仁种植,14... 详细信息

砂仁是我国传统中药材,是“四大南药”之一,具有药食同源的特性(是药食同源植物),有多种保健功效。对砂仁种植现状的调查分析可以为药材产业发展提供决策性意见,最终促进农民增收和乡村振兴。广西隆安县的气候和地理条件适宜砂仁种植,146份农户调查问卷显示:目前砂仁种植总体上发展状态良好,但仍存在种植户积极性不高、种植主体老龄化现象严重、自然结果率不稳定、种植技术水平参差不齐等问题,为解决这些问题,建议从建设中医药绿色药材原料基地、加强良种推广力度和政府引导等方面入手,为砂仁产业升级和健康发展提供参考。

关键词：砂仁种植现状调查发展建议广西隆安县

Sub-nanometer Pt_(2)In_(3) intermetallics as ultra-stable catalyst for propane dehydrogenation

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能源化学:英文版 2023年第8期83卷 304-312,I0009页

作者： Yanan Xing Guiyue Bi Xiaoli Pan Qike Jiang Yuanlong Tan Yang Su Leilei Kang Bonan Li Lin Li aiqin wang Jingyuan Ma Xiaofeng Yang Xiao Yan Liu Tao Zhang CAS Key Laboratory of Science and Technology on Applied Catalysis ichEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

Pt-based catalysts are the typical industrial catalysts for propane dehydrogenation(PDH),which still suffer from insufficient lo ng-term durability due to the structu ral instability and coke deposition.A commercial γ-Al_(2)O_(3) supported thermally robust sub-nanometer Pt2In3intermetallic catalyst with atomically ordered structure and rigorously separated Pt single atoms was fabricated,which showed outstanding robustness in 240 h long-term operation at 600℃ with the deactivation rate constant kdas low as0.00078 h^(-1), ranking among the lowest reported *** on various in situ characterizations and theoretical calculations,it was proved that the catalyst stability not only resulted from the separated Pt single-atom sites but also significantly affected by the distance of adjacent Pt *** increasing distance to 3.25 A in the Pt_(2)In_(3)could induce a weak π-adsorption configuration of propylene on Pt sites,which facilitated the desorption of propylene and restrained the side reactions like coking.

关键词： Propane dehydrogenation Propylene Pt-In catalyst Intermetallic compounds Pt_(2)ln_(3)

基于CiteSpace和文献计量分析平台的葛根研究可视化分析

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热带农业科学 2024年第2期44卷 121-129页

作者：康家和段志程唐雪珂施平丽严华兵王爱勤广西大学农学院广西南宁530004 广西农业科学院经济作物研究所广西南宁530007

基于CiteSpace软件和文献计量学方法,以Web of science核心数据库为采集对象,“Pueraria Lobata”等为主题词。将1995—2023年的1683篇文献作为研究对象,对文献的发文量、发文作者、发文国家(地区)、发文机构、出版物等进行数据挖掘。... 详细信息

基于CiteSpace软件和文献计量学方法,以Web of science核心数据库为采集对象,“Pueraria Lobata”等为主题词。将1995—2023年的1683篇文献作为研究对象,对文献的发文量、发文作者、发文国家(地区)、发文机构、出版物等进行数据挖掘。运用关键词共现图谱、关键词聚类图谱、关键词突现分析、关键词时区图等方法进行数据可视化分析。结果显示:(1)葛根研究发文量总体呈现上升趋势;葛根研究的核心作者主要来自于中国、美国、韩国等地;核心作者群与核心机构群逐渐形成;葛根投稿期刊呈现明显的层次划分格局。(2)中国的发文量占发文总量的50%,位居全球第一。中国科学院、中国香港中文大学等机构为世界的葛根研究做出了巨大贡献,但从篇被引频次上分析,仍与其他机构存在一定差距。(3)葛根的研究逐渐从理论走向实践,时区图结果显示,目前葛根淀粉、肠道微生物群、网络药理学等成为新兴研究热点。葛根素、异黄酮等关键词贯穿葛根研究整个发展阶段,逐渐形成以药理学为基础,食品科学、化学、植物科学等多学科综合发展的新模式。

关键词：葛根 CiteSpace 可视化分析科技文本挖掘研究热点

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抗VEGF联合Ahmed引流阀植入治疗新生血管性青光眼的临床疗效

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蚌埠医学院学报 2024年第8期49卷 1015-1019页

作者：赵思婕戴青范宇晨王爱芹饶紫璇范元付高自清蚌埠医科大学第一附属医院眼科安徽蚌埠233004 安徽省怀远县中医院眼科 233400

目的:观察玻璃体腔抗血管内皮生长因子(VEGF)注射联合Ahmed青光眼引流阀(AGV)植入对新生血管性青光眼(NVG)的疗效与安全性。方法:回顾性分析NVG病人47例(47眼)临床资料,其中25例(25眼)实施AGV植入术(AGV组),22例(22眼)行小梁切除术(小梁... 详细信息

目的:观察玻璃体腔抗血管内皮生长因子(VEGF)注射联合Ahmed青光眼引流阀(AGV)植入对新生血管性青光眼(NVG)的疗效与安全性。方法:回顾性分析NVG病人47例(47眼)临床资料,其中25例(25眼)实施AGV植入术(AGV组),22例(22眼)行小梁切除术(小梁组)。2组病人术前均予以玻璃体腔内抗VEGF药物注射,术后完成全视网膜光凝,1年内定期随访。比较2组术后最佳矫正视力改善情况和手术前后眼内压(IOP)、抗青光眼药物使用情况及术后并发症、手术成功率。结果:抗VEGF治疗后,2组病人均获得不同程度的虹膜面新生血管消退,且IOP均较术前降低(P0.05)。2组术后最佳矫正视力改变情况差异无统计学意义(P>0.05)。2组术后应用抗青光眼药物种类均较术前明显减少(P0.05)。AGV组手术成功率高于小梁组(P<0.05)。结论:抗VEGF药物玻璃体腔内注射联合AGV植入术治疗NVG安全有效。

关键词：新生血管性青光眼抗血管内皮生长因子 Ahmed青光眼引流阀小梁切除术

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含轴向表面裂纹海洋管道的应力强度因子分析

应用力学学报 2008年第3期25卷 439-444页

作者：王爱勤秦太验长安大学西安710064 中国农业大学北京100083

基于权函数方法,对表面含有轴向裂纹的海洋管道进行分析,给出了计算裂纹前端应力强度因子的积分表达式,进一步导出了满足工程精度要求的应力强度因子的实用计算公式。研究了具有此类裂纹的海洋管道在内压作用下,裂纹最深点和表面点的应... 详细信息

基于权函数方法,对表面含有轴向裂纹的海洋管道进行分析,给出了计算裂纹前端应力强度因子的积分表达式,进一步导出了满足工程精度要求的应力强度因子的实用计算公式。研究了具有此类裂纹的海洋管道在内压作用下,裂纹最深点和表面点的应力强度因子随裂纹深度和裂纹纵横比的变化规律,并对其可靠度进行了评估。数值结果表明:含轴向裂纹海洋管道的应力强度因子随裂纹长度和深度的增加而增加;当裂纹长度和深度、管道壁厚和半径以及荷载为随机变量时,其可靠度随压力均值的增大而减少。该方法为海底管道的断裂计算和可靠性分析提供了参考依据。

关键词：海洋管道断裂应力强度因子权函数法断裂可靠性

Effect of Modification Treatment on Chloride Ions Permeability and Microstructure of Recycled Brick-mixed Aggregate Concrete

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 728-737页

作者：何子明申爱琴 wang Xiaobin WU Jinhua wang Lusheng School of Civil and Architectural Engineering Liaoning University of TechnologyJinzhou 121001China School of Highway Chang’an UniversityXi’an 710064China Department of Road and Bridge Engineering Liaoning Provincial College of Communica-tionsShenyang 110122China

The modification methods of pozzolan slurry combined with sodium silicate and silicon-based additive were respectively adopted to treat recycled coarse brick-mixed aggregate(RCBA)in this *** compressive strength and chloride permeability resistance of recycled aggregate concrete(RAC)before and after modification treatment were tested,and the microstructure of RAC was analyzed by mercury intrusion porosimetry(MIP)and scanning electron microscopy(SEM).The results show that the physical properties of RCBA strengthened by modification treatment are improved,and the compressive strength and chloride permeability resistance of treated RAC are also significantly *** modification treatment optimizes the pore size distribution of RAC,which increases the number of gel pores and transition pores,and decreases the number of capillary pores and macro *** surface fractal dimension shows a significant correlation with chloride diffusion coefficient,indicating that the variation of chloride permeability of treated RAC is consistent with the microstructure evolution.

关键词： recycled aggregate concrete modification treatment compressive strength chloride permeability resistance microstructure

MIL-53(Al)derived single-atom Rh catalyst for the selective hydrogenation of m-chloronitrobenzene into m-chloroaniline

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Chinese Journal of Catalysis 2021年第5期42卷 824-834页

作者： Weiyin wang Lu Lin Haifeng Qi Wenxiu Cao Zhi Li Shaohua Chen Xiaoxuan Zou Tiehong Chen Nanfang Tang Weiyu Song aiqin wang Wenhao Luo College of Chemistry Xiangtan UniversityXiangtan 411105HunanChina CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China College of Chemistry and Chemical Engineering Jishou UniversityJishou 416000HunanChina State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China Institute of New Catalytic Materials Science School of Materials Science and EngineeringKey Laboratory of Advanced Energy Materials Chemistry(MOE)Nankai UniversityTianjin 300350China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

The catalytic hydrogenation of halonitroarenes to haloanilines is a green and sustainable process for the production of key nitrogen-containing intermediates in fine chemical *** hydrogenation poses a significant challenge,which requires the rational design of the catalysts with proper hydrogenation ability for nitro group and simultaneously preventing dehalogenation of halogen ***,a highly effective Rh@Al_(2)O_(3)@C single-atom catalyst(SAC)was developed for the hydrogenation of m-chloronitrobenzene(m-CNB)to m-chloroaniline(m-CAN),through an in-situ grafting of metal during the assembly of MIL-53(Al),followed by confined *** characterizations reveal an exquisite structure of the Rh@Al_(2)O_(3)@C,containing atomically dispersed Rh sites onto Al_(2)O_(3) confined by the amorphous *** five-coordinated aluminum(Al^(Ⅴ))species are essential for achieving the atomic dispersion of Rh atoms,providing the unsaturated coordinative sites for *** to the benchmark Rh/γ-Al_(2)O_(3) and Rh/C nanocatalysts,the Rh@Al_(2)O_(3)@C SAC affords an excellent turnover frequency of 2317 molm-CNB·molRh^(–1)·h^(–1),the highest value to date in heterogeneous catalyst systems for the hydrogenation of m-CNB at 313 K and 20 bar H2,together with a sustained selectivity to m-CAN(~98%)during five consecutive *** superior catalytic performance of the Rh@Al_(2)O_(3)@C is attributed to a proper modulation of electronic structure of hydrogenation metal by forming SAC,together with an enhanced accessibility of acid function sites.

关键词： Single-atom catalyst Rhodium Metal-organic framework Hydrogenation Chemoselectivity