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磁性多层膜CoFeB/Ni的垂直磁各向异性研究

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物理学报 2016年第24期65卷 177-182页

作者：俱海浪王洪信程鹏李宝河陈晓白刘帅于广华北京工商大学理学院北京102488 北京科技大学材料科学与工程学院北京100083

应用磁控溅射法在玻璃基片上制备了以Pt为底层的CoFeB/Ni多层膜结构样品,通过测试样品的反常霍尔效应研究多层膜的垂直磁各向异性(perpendicular magnetic anisotropy,PMA),对影响多层膜垂直磁各向异性的各因素进行了调制.实验结果表明... 详细信息

应用磁控溅射法在玻璃基片上制备了以Pt为底层的CoFeB/Ni多层膜结构样品,通过测试样品的反常霍尔效应研究多层膜的垂直磁各向异性(perpendicular magnetic anisotropy,PMA),对影响多层膜垂直磁各向异性的各因素进行了调制.实验结果表明,多层膜的底层厚度、周期层中各层的厚度及周期数对样品的反常霍尔效应和磁性有重要影响.通过对样品各参数的逐步调制,最终获得了具有良好PMA的CoFeB/Ni多层膜最佳样品Pt(4)/[CoFeB(0.4)/Ni(0.3)]_3/Pt(1.0).经测试计算,该样品的各向异性常数K_(eff)为2.2×10~6erg/cm^3(1 erg/cm^3=10^(-1)J/m^3),具有良好的PMA性能,样品总厚度为7.1 nm,完全满足制备垂直磁结构材料的厚度要求,可进一步研究其在器件中的集成与应用.

关键词： CoFeB/Ni多层膜垂直磁各向异性反常霍尔效应各向异性常数

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苏沃雷生有关异构体的合成

中国医药工业杂志 2017年第6期48卷 825-832页

作者：季渊博李春正彭程金勋奇李伯男中国医药工业研究总院上海医药工业研究院化学制药新技术中心上海201203 中国药科大学工学院江苏南京211198 武汉大学化学与分子科学学院湖北武汉430072

以N-苄基甘氨酸为起始原料,经酯化、缩合、氨解、还原、氨基保护、脱苄基、缩合、脱Boc保护基、亲核取代制得有关物质5-氯-2-[(7R)-7-甲基-4-[5-甲基-2-(2H-1,2,3-三唑-2-基)苯甲酰基]-1,4-二氮杂环庚烷-1-基]-1,3-苯并噁唑(1a)和5-氯-2... 详细信息

以N-苄基甘氨酸为起始原料,经酯化、缩合、氨解、还原、氨基保护、脱苄基、缩合、脱Boc保护基、亲核取代制得有关物质5-氯-2-[(7R)-7-甲基-4-[5-甲基-2-(2H-1,2,3-三唑-2-基)苯甲酰基]-1,4-二氮杂环庚烷-1-基]-1,3-苯并噁唑(1a)和5-氯-2-[(7S)-7-甲基-4-[5-甲基-2-(2H-1,2,3-三唑-2-基)苯甲酰基]-1,4-二氮杂环庚烷-1-基]-1,3-苯并噁唑(1b);(S)-1-苄基-5-甲基-1,4-二氮杂环庚烷经缩合、还原、亲核取代制得有关物质5-氯-2-[(5S)-5-甲基-4-[5-甲基-2-(2H-1,2,3-三唑-2-基)苯甲酰基]-1,4-二氮杂环庚烷-1-基]-1,3-苯并噁唑(1c)。有关异构体1a、1b和1c的结构均经MS和~1HNMR确证。其中化合物1b是未见文献报道的新化合物。

关键词：苏沃雷生抗失眠药有关物质食欲肽受体拮抗药异构体合成工艺

Unraveling the impacts of intermolecular interaction on morphology evolution for highly efficient organic solar cells and modules

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Science China Chemistry 2025年第01期 264-272页

作者： Xueqing Ma Yingying cheng Yuqiang liu Xinming Zheng Guangliu Ran Hongxiang li Xinyue Cui Andong Zhang Wenkai Zhang Pei cheng Wenchao Huang Zhishan Bo Beijing Key Laboratory of Energy Conversion and Storage Materials College of Chemistry Beijing Normal University College of Textiles and Clothing State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Key State Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of Technology Department of Physics and Applied Optics Beijing Area Major Laboratory Center for Advanced Quantum Studies Beijing Normal University State Key Laboratory of Polymer Materials Engineering College of Polymer Science and Engineering Sichuan University

Understanding the effect of intermolecular interaction on the growth dynamic of active layers is critical for advancing organic solar cells(OSCs). However, the diverse structure of donors and acceptors makes the research challenging. Additives with customizable structures and properties could simplify this complexity. Herein, we meticulously tailor two additives of 3,4-ethylenedioxythiophene(EDOT) and 2,5-dibromo-3,4-ethylenedioxythiophene(DBEDOT), possessing distinct intermolecular interaction features to elaborate the inherent relationship. It is found that varied interaction strengths can alter film formation processes. The enhanced intermolecular interaction between the DBEDOT and non-fullerene acceptor BTP-e C9-4F results in pre-aggregation and longer crystallization duration of BTP-e C9-4F, facilitating the formation of films with compact molecular packing and decent phase separation. Thus, exciton dissociation and charge transport become more efficient. Finally, devices processed with DBEDOT exhibit a remarkable power conversion efficiency of 19.35% in small-area OSCs and 14.11% in bladecoated 5 cm × 5 cm organic solar mini-modules. Especially, OSCs can maintain 80% of their initial efficiency after continuous annealing at 85 °C for over 2,100 h.

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Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑life lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang li Wen‑Xia Su Jia‑Min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑peng Cai Kang li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous li deposition and highly reversible li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous li+flux lithium metal battery

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微塑料和镉及其复合对水稻种子萌发的影响

农业环境科学学报 2021年第1期40卷 44-53页

作者：王泽正杨亮李婕付东东胡维薇范正权彭丽成海南大学生态与环境学院海口570100 海南省农林环境过程与生态调控重点实验室海口570100 墣锦环境工程(海南)有限公司海口570105

为探究重金属、微塑料和二者的复合效应对农作物种子生长特性的影响,选取水稻种子为实验对象,探究微塑料聚苯乙烯(mPS)和聚对苯二甲酸类塑料(mPET,100、300、500、1000 mg·L^-1和1500 mg·L^-1)与重金属镉(Cd,2、5、10 mg·L^-1和50 mg... 详细信息

为探究重金属、微塑料和二者的复合效应对农作物种子生长特性的影响,选取水稻种子为实验对象,探究微塑料聚苯乙烯(mPS)和聚对苯二甲酸类塑料(mPET,100、300、500、1000 mg·L^-1和1500 mg·L^-1)与重金属镉(Cd,2、5、10 mg·L^-1和50 mg·L^-1)单一及复合对种子萌发及生长的影响。结果表明:单一实验中,镉胁迫对水稻种子萌发特性的影响基本表现为“低促高抑”的规律,随着镉浓度的升高,发芽率、发芽势、发芽指数、活力指数以及根长和芽长等各项指标均呈现下降的趋势;单一微塑料暴露下,总体表现为低浓度(100 mg·L^-1)促进发芽,中浓度(500 mg·L^-1)抑制发芽,高浓度(>1000 mg·L^-1)无影响,即发芽率与对照组持平;两种微塑料对水稻种子的活力指数、根长和芽长均有所促进。微塑料(100 mg·L^-1和500 mg·L^-1)和镉(2 mg·L^-1和10 mg·L^-1)复合污染实验中,与对照组相比,低浓度MPs(100 mg·L^-1)-Cd(2 mg·L^-1)复合产生的协同作用促进了水稻种子发芽,其余复合污染对种子的发芽均表现为拮抗作用;对于低浓度的微塑料(100 mg·L^-1),其与镉复合会对水稻种子芽和根的生长起协同作用,只有mPS(100 mg·L^-1)与高浓度的镉(10 mg·L^-1)复合才会对根的生长起到拮抗作用;高浓度的微塑料与高浓度的镉复合后没有对水稻种子根和芽产生影响。研究表明,相比于单一污染,微塑料-镉复合效应对水稻种子生长特性、根长和芽长的影响总体表现为拮抗作用,一定程度上降低了单一污染物的毒害作用。

关键词：微塑料镉复合效应水稻种子发芽生长特性

The compound(E)-2-(3,4-dihydroxystyryl)-3-hydroxy-4H-pyran-4-one alleviates neuroinflammation and cognitive impairment in a mouse model of Alzheimer's disease

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Neural Regeneration Research 2025年第11期20卷 3330-3344页

作者： Xueyan liu Wei Wu Xuejuan li chengyan Wang Ke Chai Fanru Yuan Huijuan Zheng Yuxing Yao Chenlu li Zu-cheng Ye Daijun Zha Department of Medicinal Chemistry School of PharmacyFujian Medical UniversityFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases School of Basic Medical SciencesFujian Medical UniversityFuzhouFujian ProvinceChina Institute of Laboratory Animal Center Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Neurosurgery Neurosurgery Research InstituteThe First Affiliated HospitalFujian Medical UniversityFuzhouFujian ProvinceChina Department of Hyperbaric Oxygen National Regional Medical CenterBinhai Campus of the First Affiliated HospitalFujian Medical UniversityFuzhouFujian ProvinceChina

Previous studies have shown that the compound(E)-2-(3,4-dihydroxystyryl)-3-hydroxy-4H-pyran-4-one(D30),a pyromeconic acid derivative,possesses antioxidant and anti-inflammatory properties,inhibits amyloid-β aggregation,and alleviates scopolamine-induced cognitive impairment,similar to the phase Ⅲ clinical drug *** this study,we established a mouse model of Alzheimer's disease via intracerebroventricular injection of fibrillar amyloid-β to investigate the effect of D30 on fibrillar amyloid-β-induced *** results showed that D30 alleviated fibrillar amyloid-β-induced cognitive impairment,promoted fibrillar amyloid-β clearance from the hippocampus and cortex,suppressed oxidative stress,and inhibited activation of microglia and astrocytes.D30 also reversed the fibrillar amyloid-β-induced loss of dendritic spines and synaptic protein ***,we demonstrated that exogenous fibrillar amyloid-βintroduced by intracerebroventricular injection greatly increased galectin-3 expression levels in the brain,and this increase was blocked by *** the role of D30 in clearing amyloid-β,inhibiting neuroinflammation,protecting synapses,and improving cognition,this study highlights the potential of galectin-3 as a promising treatment target for patients with Alzheimer's disease.

关键词： Alzheimer's disease amyloid-β astrocyte cognitive impairment D30 dendritic spines galectin-3 microglia neuroinflammation neuron

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电泳沉积功能陶瓷涂层技术

中国陶瓷 2000年第6期36卷 36-40页

作者：张建民杨长春石秋芝程鹏里郑州大学化学化工学院郑州450052

本文评述了功能陶瓷悬浮液的稳定性、电泳沉积技术原理、以及该技术在制备生物陶瓷、超导陶瓷、铁电陶瓷、耐磨耐高温陶瓷等功能陶瓷涂层方面的应用。讨论了电流、电压。

关键词：电泳沉积功能陶瓷县浮液复合材料陶瓷涂层

RESEARCH ON PROBLEM ABOUT THE FEASIBIliTY OF MPS

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RESEARCH ON PROBLEM ABOUT THE FEASIBILITY OF MPS

基于GSO-BP神经网络的城市轨道交通客流量短时间预测

第十二届工业工程和工程管理国际会议

作者： WANG Gang ,peng Zu-cheng ,JIN li the Coll. of Mech. Eng. ,Chongqing University of Science and Technology, Chongqing, China he Coll. of Mech. Eng. , Chongqing University, Chongqing, China

＜正＞This paper discusses the factors that affect the feasibility of MPS;the factors are the preparative of basic data,the accuracy of forecast, the planning method and the choice of parameter etc. Analyzes the existing problem and limitation, and presents some suggestions based on the theory such as work study, ERP, CPM and practical experience in order to improve the feasibility of MPS.

关键词： MPS work measurement forecast CPM

来源： cnki会议评论

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交通科技与经济 2017年第1期19卷 1-4,63页

作者：唐秋生程鹏李娜重庆交通大学交通运输学院重庆400041

城市轨道交通作为公共交通客流量的分担措施之一,能够解决因客流量预测不准确而带来的资源浪费和低效益问题。建立一种新的GSO-BPNN方法,该方法在BP网络的基础上植入GSO算法,优化网络的初始权值和阈值,并以某城市轨道交通客流量为例,对... 详细信息

城市轨道交通作为公共交通客流量的分担措施之一,能够解决因客流量预测不准确而带来的资源浪费和低效益问题。建立一种新的GSO-BPNN方法,该方法在BP网络的基础上植入GSO算法,优化网络的初始权值和阈值,并以某城市轨道交通客流量为例,对比普通BP网络预测模型,结果显示GSO-BPNN方法的预测精度较高。

关键词：城市轨道交通神经网络萤火虫算法客流量预测 Matlab仿真