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Host-guest supramolecular interaction behavior at the interface between anode and electrolyte for long life Zn anode

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Journal of Energy Chemistry 2022年第6期31卷 237-243,I0007页

作者： Kai Wu Fanghua Ning Jin yi Xiaoyu liu Jiaqian Qin Yuyu liu Jiujun Zhang Institute for Sustainable Energy/College of Sciences Shanghai UniversityShanghai 200444China Center of Excellence in Responsive Wearable Materials Metallurgy and Materials Science Research InstituteChulalongkorn UniversityBangkok 10330Thailand

The hydrogen evolution reaction (HER) and dendrite growth associated with Zn anode have become the main bottlenecks for the further development of zinc ion batteries (ZIBs).In this work,the electrochemical activity of H_(3)O^(+) is inhibited by the supramolecular host–guest complex composed of H_(3)O^(+) as guest and 18-crown-6 as *** even Zn plating is induced by the host–guest complex electrostatic shielding layer on Zn anode,as detected by in-situ optical *** lamellar Zn is plated which profits from the improved Zn plating *** functional theory (DFT) calculation presents the stable structure of *** less produced H_(2) content is monitored online by a mass spectrometer during Zn plating/stripping,which indicates HER can be hampered by the host–guest ***,the ZIBs with long life and high Coulombic efficiency are achieved via introducing *** proposed host–guest supramolecular interaction is expected to facilitate the furthermore development of Zn batteries.

关键词： H_(2)evolution Zn plating behavior Host-guest supramolecular interaction Dendrite free zinc ion batteries

High Strength and Ductility of a MgAg/MgGdYAg/MgAg Sandwiched Plate Produced by High-Pressure Torsion

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Acta Metallurgica Sinica(English Letters) 2023年第2期36卷 343-351页

作者： Qile Huo Yaxin Chen Bo Gao yi liu Manping liu Xuefei Chen Hao Zhou School of Materials Science and Engineering Jiangsu UniversityZhenjiang212013China State Grid Yangzhou Power Supply Company Yangzhou225000China Nano and Heterogeneous Materials Center School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing210094China

Due to their unique precipitation behavior,magnesium-rare earth(Mg-RE)alloys exhibit excellent strength and high thermal ***,owing to the negative blocking effect of precipitation on dislocation slipping,the plasticity and ductility of Mg-RE alloys become deteriorate after aging *** this work,a novel strategy to improve the combination of strength and ductility by designing a laminate heterostructured Mg alloy is ***-pressure torsion(HPT)processing is employed to fabricate a clean and well-bonded interface between MgGdYAg and MgAg *** two alloys have huge differences in precipitation hardening,and ductility is improved due to two *** one thing,the density of the second phases in the MgAg alloy is much lower than that of MgGdYAg alloy;for another,the non-basal〈c+a〉slipping is continuously activated during *** this mechanism,the uniform elongation of the heterostructured MgAg/MgGdYAg/MgAg alloy is improved to 7.1%.

关键词： Heterogeneous Mechanical properties Mg-RE alloys Laminate

Effects of the Molecular Weight of PLGA on Degradation and Drug Release In vitro from an mPEG-PLGA Nanocarrier

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Chemical Research in Chinese Universities 2016年第5期32卷 848-853页

作者： liu Rui WANG Yan MA Yudan WU yi GUO yi XU Li Key laboratory for Molecular Enzymology and Engineering Ministry of Education National Engineering Laboratory for AIDS Vaccine School of Life Sciences Jilin University Changchun 130012 P. R. China Department of Endocrinology China-Japan Union Hospital Jilin University Changehun 130033 P. R. China College of Pharmacy Jilin University Changchun 130021 P. R. China Jilin Research Institute of Sports Science Changchun 130022 P. R. China

We successfully synthesized four kinds of copolymers with varying molecular weights of poly（lactide- co-glycolide）（PLGA） to yield methoxy-poly（ethylene glycol）-block-poly（lactide-co-glycolide）（mPEG-PLGA） nano- carriers： mPEG-PLGA（3k）, mPEG-PLGA（9k）, mPEG-PLGA（llk） and mPEG-PLGA（16k）. An antitumor drug, 10-hydroxycamptothecin（HCPT）, was encapsulated into the mPEG-PLGA nanocarrier cores by self-assembly in dialysis. The lower molecular weight nanocarriers degraded more quickly, resulting in mass loss, pH decline, and a rapid HCPT release rate in vitro. The degradation and drug release of the nanocarriers were dependent on the PLGA molecular weight. However, the larger molecular weight nanocarriers could not increase the loading content and encapsulation efficiency. Considering the antitumor effect of these nanocarriers, the mPEG-PLGA（9k） nanocarrier, which had the highest drug loading content[（7.72±0.57）%] and a relatively high encapsulation efficiency [（22.71±5.53）%], is an optimum agent for drug delivery.

关键词： Poly(lactide-co-glycolide) 10-Hydroxycamptothecin Nanocarrier Drug delivery

Simulator of pyroshock environment and effect rules of its adjustable parameters

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Chinese Journal of Aeronautics 2020年第2期33卷 609-620页

作者： Hongda ZHAO Jifeng DING Wei liu Zhiwei HAO yi SUN Qiuhua ZHANG yizhi liu School of Astronautics Harbin Institute of TechnologyHarbin 150001China Institute of Spacecraft System Engineering China Academy of Space TechnologyBeijing 100094China

During the launching of spacecraft,the on-board devices will undergo a series of pyroshock *** order to verify the reliability of these devices under these pyroshock environments,all of them are needed to take the shock test before *** paper has carried out an in-depth research on the simulation method of the pyroshock based on the true explosive *** this study,a simulator containing multiple adjustment parameters is presented and the safety is considered by the design of the protective *** the working process of this setup is simulated with the explicit dynamic codes *** more,the effects of the adjustment parameters on the three factors of shock Response Spectrum(SRS)of the resonant board are explored *** rules achieved in this paper are verified by a typical *** results indicate that the improved simulator can avoid the danger of explosive and make full use of the advantage of actual explosive *** the test condition can be quickly realized at the simulator according to the effect rules of the three adjustable parameters.

关键词： Adjustable parameters Maximum Expected Flight Environment(MEFE) Protective cover Pyroshock Shock Response Spectrum(SRS)

BMP4 facilitates beige fat biogenesis via regulating adipose tissue macrophages

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Journal of Molecular Cell Biology 2019年第1期11卷 14-25页

作者： Shu-Wen Qian Meng-Yuan Wu yi-Na Wang Ya-Xin Zhao ying zou Jia-Bao Pan Yan Tang Yang liu Liang Guo Qi-Qun Tang Key Laboratory of Metabolism and Molecular Medicine The Ministry of EducationDepartment of Biochemistry and Molecular BiologyFudan University Shanghai Medical CollegeShanghai 200032China

Thermogenic beige fat improves metabolism and prevents *** evidence shows that the activation of M2 macrophages stimulates beige adipogenesis,whereas the activation of Ml macrophages,which play a major role in inflammation,impedes beige ***,the identification of factors that regulate adipose tissue macrophages(ATMs)will help clarify the mechanism involved in ***,we found that one of the secreted proteins in adipose tissue,namely,BMP4,alters the ATM profile in subcutaneous adipose tissue by activating M2 and inhibiting Ml ***,the BMP4-stimutated p38/MAPK/STAT6/PI3K-AKT signalling pathway is ***,BMP4 improved the potency of M2 macrophages to induce beige fat *** that the overexpression of BMP4 in adipose tissue promotes the beiging of subcutaneous adipose tissue and improves insulin sensitivity,these findings provide evidence that BMP4 acts as an activator of beige fat by targeting immuno-metabolic pathways.

关键词： BMP4 fat browning adipose tissue macrophages

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富血小板血浆治疗神经病理性疼痛的应用进展

中国疼痛医学杂志 2024年第1期30卷 19-27页

作者：杨薏帆钟志芳刘益鸣张挺杰冯艺李君北京大学人民医院疼痛医学科北京100044

神经病理性疼痛仍然缺乏有效的治疗方法,导致病人长期忍受慢性疼痛的折磨、生活质量受到严重影响。富血小板血浆(platelet-rich plasma, PRP)可以释放多种生物活性因子,具备神经修复和缓解疼痛的作用。本文通过对现有的研究和文献进行... 详细信息

神经病理性疼痛仍然缺乏有效的治疗方法,导致病人长期忍受慢性疼痛的折磨、生活质量受到严重影响。富血小板血浆(platelet-rich plasma, PRP)可以释放多种生物活性因子,具备神经修复和缓解疼痛的作用。本文通过对现有的研究和文献进行检索及归纳,发现PRP具有促进创伤愈合和抗炎的特性,不仅有助于修复受损的神经组织,而且能有效缓解多种神经病理性疼痛,为临床治疗提供了新的思路与方法。

关键词：富血小板血浆神经病理性疼痛神经损伤

Construction of Ultrathin Layered MXene-TiN Heterostructure Enabling Favorable Catalytic Ability for High-Areal-Capacity Lithium-Sulfur Batteries

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Nano-Micro Letters 2022年第11期14卷 324-340页

作者： Hao Wang Zhe Cui Shu-Ang He Jinqi Zhu Wei Luo Qian liu Rujia zou State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China Department of Physics College of ScienceDonghua UniversityShanghai 201620People’s Republic of China

Catalysis has been regarded as an effective strategy to mitigate sluggish reaction kinetics and serious shuttle effect of Li-S ***,a spherical structure consists of ultrathin layered Ti_(3)C_(2)T_(x)-TiN heterostructures(MX-TiN)through in-situ nitridation method is *** controllable nitridation,highly conductive TiN layer grew on the surface and close coupled with interior MXene to form unique 2D *** ultrathin heterostructure with only several nanometers in thickness enables outstanding ability to shorten electrons diffusion distance during electrochemical reactions and enlarge active surface with abundant adsorptive and catalytic ***,the(001)surface of TiN is dominated by metallic Ti-3d states,which ensures fast transmitting electrons from high conductive MX-TiN matrix and thus guarantees efficient catalytic *** and experiments demonstrate that polysulfides are strongly immobilized on MX-TiN,meanwhile the bidirectional reaction kinetics are catalytically enhanced by reducing the conversion barrier between liquid LiPSs and solid Li_(2)S_(2)/Li_(2)*** a result,the S/MX-TiN cathode achieves excellent long-term cyclability with extremely low-capacity fading rate of 0.022%over 1000 cycles and remarkable areal capacity of 8.27 mAh cm^(−2) at high sulfur loading and lean electrolytes.

关键词： Li-S batteries Ultrathin 2D structures Electrochemical catalysis MXenes Ti_(3)C_(2)T_(x)-TiN

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福建省毛豆根结线虫种类鉴定及初侵染来源

植物保护 2024年第1期50卷 77-84页

作者：王婷柯叶鑫周瑶乔燚肖顺程曦刘国坤福建农林大学植物保护学院闽台作物有害生物生态防控国家重点实验室福州350002

福建省漳州市一基地毛豆(品种:‘毛豆64’)苗期发生严重根结线虫病,发病株率为78%。为明确其病原的种类及其初侵染来源,通过形态学、分子生物学方法进行了种类鉴定。研究结果表明,该线虫雌虫、雄虫、2龄幼虫(J2)的形态学特征与测量值和... 详细信息

福建省漳州市一基地毛豆(品种:‘毛豆64’)苗期发生严重根结线虫病,发病株率为78%。为明确其病原的种类及其初侵染来源,通过形态学、分子生物学方法进行了种类鉴定。研究结果表明,该线虫雌虫、雄虫、2龄幼虫(J2)的形态学特征与测量值和拟禾本科根结线虫Meloidogyne graminicola相吻合;基于线虫rDNA-ITS序列和28S rDNA D2D3序列构建的系统发育树进一步确定其为拟禾本科根结线虫;室内接种试验确定了其致病性。这是首次在福建省毛豆上发现拟禾本科根结线虫。在毛豆基地畦地残留的前作水稻稻茬根内和根际土壤中均分离到大量J_(2)s,经特异性引物扩增确定为拟禾本科根结线虫,研究认为前作水稻根系受拟禾本科根结线虫侵染,在灌溉淹水状态下线虫2龄幼虫和卵在根内与土壤中长期存活,成为轮作毛豆根结线虫病的初侵染源。

关键词：拟禾本科根结线虫水稻根结线虫鉴定系统发育分析

黄土丘陵沟壑区降雨特征对不同土地利用类型坡面产流产沙的影响

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西北农林科技大学学报（自然科学版） 2024年第10期52卷 101-109,118页

作者：石默杰杨光薛艳春吴际思彩花刘一内蒙古农业大学沙漠治理学院内蒙古呼和浩特010019 内蒙古杭锦荒漠生态系统国家定位观测研究站内蒙古鄂尔多斯017400 中央与地方共建风沙物理重点实验室内蒙古呼和浩特010018 鄂尔多斯市林业和草原事业发展中心内蒙古鄂尔多斯017010 呼伦贝尔市水利事业发展中心内蒙古呼伦贝尔021000

【目的】探究黄土丘陵沟壑区降雨特征及其对不同土地利用类型坡面产流产沙的影响。【方法】2019-2021年,以内蒙古达拉特旗合同沟小流域为研究区,设置5个不同土地利用类型(裸地、天然草地、灌木林地、农地、乔木林地)径流小区,监测研究... 详细信息

【目的】探究黄土丘陵沟壑区降雨特征及其对不同土地利用类型坡面产流产沙的影响。【方法】2019-2021年,以内蒙古达拉特旗合同沟小流域为研究区,设置5个不同土地利用类型(裸地、天然草地、灌木林地、农地、乔木林地)径流小区,监测研究区的降雨特征指标(降雨量、降雨历时、30 min最大降雨强度(I 30)、平均降雨强度、降雨侵蚀力),利用K-均值聚类法,以研究区的降雨特征指标为变量,对合同沟小流域的侵蚀性降雨进行分类;计算不同土地利用类型径流小区的径流深和土壤流失量,分析不同土地利用类型和不同降雨类型对坡面产流产沙的影响,最后分析了合同沟小流域降雨特征与不同土地利用类型坡面总径流深和总土壤流失量的相关性。【结果】(1)2019-2021年,合同沟小流域降雨分布不均匀,共发生降雨128次,其中侵蚀性降雨51次,侵蚀性降雨量占总降雨量的80.2%,且侵蚀性降雨主要集中在6-8月。(2)将侵蚀性降雨分为3类:Ⅰ类降雨(大雨量、长历时、高强度);Ⅱ类降雨(中雨量、中历时、中强度)和Ⅲ类降雨(小雨量、短历时、低强度)。与Ⅱ类降雨和Ⅲ类降雨相比,Ⅰ类降雨发生的频次较低,但其平均降雨侵蚀力较强;在同一土地利用类型下,Ⅰ类降雨造成的坡面径流深和土壤流失量均明显较大。(3)2019-2021年,不同土地利用类型径流小区坡面产流产沙特征差异明显,总径流深和总土壤流失量由大到小依次为裸地>农地>天然草地>灌木林地>乔木林地。(4)各降雨特征指标与不同土地利用类型的坡面总径流深和总土壤流失量均呈正相关关系,其中降雨量、降雨强度和I_(30)的影响较大。【结论】在黄土丘陵沟壑区,降雨量、降雨强度和I_(30)是影响坡面产流产沙的最主要指标,天然草地、乔木林地、灌木林地的减流减沙效益较好,可知农地退耕还林还草工程是减少土壤侵蚀的有效措施之一。

关键词：黄土丘陵沟壑区土地利用坡面产流产沙水土保持

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