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Chinese Physics Letters 2024年第9期41卷 93-106页

作者： yunqi ji Xiaohan Wang Xiaohe Li Wenting Tang Xinyang Li Xin Wang Fangfei Li Liang Li Qiang Zhou Synergetic Extreme Condition User Facility State Key Laboratory of Superhard MaterialsCollege of PhysicsJilin UniversityChangchun 130012China

La_(2)NiO_(4)has a similar structure to La_(2)CuO_(4)and was proposed as a high-temperature superconductor based on magnetic-moment measurements decades ***,with the exception for electrical resistance drop behavior of about 4 orders of magnitude that is claimed to originate from the superconductivity ever observed in Sr-doped La_(N)iO_(4),most electrical data reported to date in La_(N)iO_(4)system exhibit a trivial insulating ground ***,we definitively identify the similar electrical resistance drop behavior of more than 3 orders of magnitude in La_(2)NiO_(4+δ).However,our extensive investigations reveal that this phenomenon is a novel insulatorto-metal transition,distinct from ***,compared to the weak magnetic-field effects,pressure can significantly suppress the transition and transform from the metallic to an insulating ground state,accompanied by an isostructural phase *** work not only elucidates the fundamental properties of the metallic conducting ground state in La_(N)iO_(4)+δ,but also critically challenges the notion of superconductivity in single-layer lanthanum nickelates.

关键词： resistance electrical metallic

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PA条件不成立时GEE方法中的检验问题

应用概率统计 2008年第5期24卷 541-553页

作者：冀运齐朱仲义华东师范大学统计系上海200062 复旦大学统计系上海200433

边际回归模型和与此有关的广义估计方程(GEE)在纵向数据分析中得到了广泛的应用.Pepe和Anderson在1994指出在边际模型和GEE方法的应用中必须满足一个重要条件,即PA条件.如果该假定不能满足,可能得不到相合估计,由此进行的统计推断的效... 详细信息

边际回归模型和与此有关的广义估计方程(GEE)在纵向数据分析中得到了广泛的应用.Pepe和Anderson在1994指出在边际模型和GEE方法的应用中必须满足一个重要条件,即PA条件.如果该假定不能满足,可能得不到相合估计,由此进行的统计推断的效率可能不高.本文通过简单的AR(1)模型,在理论上和数值模拟上讨论了PA条件对基于广义估计方程方法所作的关于回归系数的检验的影响.由于PA条件不成立,回归系数的GLS估计不再是渐近无偏的,构造的Wald和Score统计量的分布不再是中心卡方分布,从而对于检验的效率也产生了严重影响.

关键词：纵向数据边际回归模型广义估计方程 PA条件假设检验

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我国高职教材智慧出版转型发展现状及思考

出版与印刷 2023年第5期 30-37页

作者：季云琪沈阳泰杨海平南京大学信息管理学院南京大学出版研究院国家新闻出版署智慧出版与知识服务重点实验室

文章关注高等职业教育体系改革中的教材建设,聚焦高等职业教材数字出版、智能出版、智慧出版的发展过程,通过分析高职教材数字出版现状,厘清高职教材由数字出版向智慧出版转型发展的特点和存在的不足,并对高职教材智慧出版转型提出相应... 详细信息

文章关注高等职业教育体系改革中的教材建设,聚焦高等职业教材数字出版、智能出版、智慧出版的发展过程,通过分析高职教材数字出版现状,厘清高职教材由数字出版向智慧出版转型发展的特点和存在的不足,并对高职教材智慧出版转型提出相应对策,以期为行业实践提供参考。

关键词：高等职业教育教材建设数字出版智慧出版

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区块链技术下图片版权保护机制与价值体系研究

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图书馆论坛 2024年第1期44卷 44-53页

作者：季云琪吴章铭杨海平卢明欣南京大学信息管理学院南京大学出版研究院

科技发展给著作权保护提供了更多可操作性,但作品确权难、交易难等问题依然存在。文章针对大量发生的侵权行为,聚焦于区块链技术在图片确权、交易领域的应用。文章着重讨论区块链技术对图片版权保护及交易的赋能,梳理现实生活中的图片... 详细信息

科技发展给著作权保护提供了更多可操作性,但作品确权难、交易难等问题依然存在。文章针对大量发生的侵权行为,聚焦于区块链技术在图片确权、交易领域的应用。文章着重讨论区块链技术对图片版权保护及交易的赋能,梳理现实生活中的图片侵权行为,总结现有图片版权保护平台的贡献及不足,分析区块链技术在图片确权和交易过程中的角色、渠道、环节、价值流向,提出延伸价值链、助力平台改进,从价值共创方面完善保护图片版权的价值体系。

关键词：区块链图片版权价值链

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Brain age estimation:premise,promise,and problems

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Neural Regeneration Research 2025年第8期20卷 2313-2314页

作者： Jarrad Perron ji Hyun Ko Graduate Program in Biomedical Engineering Price Faculty of EngineeringUniversity of ManitobaWinnipegMBCanada PrairieNeuro Research Centre Kleysen Institute for Advanced MedicineHealth Sciences CentreWinnipegMBCanada Department of Human Anatomy and Cell Science Rady Faculty of Health SciencesUniversity of ManitobaWinnipegMBCanada

Premise:The com bined effects of modern healthcare practices which prolong lifespan and declining birthrates have created unprecedented changes in age demographics worldwide that are especially pronounced in Japan,South Korea,Europe,and North *** old age is the most significant predictor of dementia,global healthcare systems must rise to the challenge of providing care for those with neurodegenerative disorders.

关键词： estimation providing birth

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黑米色素的提取工艺优化及稳定性研究

粮食加工 2012年第2期37卷 33-35页

作者：季云琪徐从勇张绍鹏山东轻工业学院食品科学与生物工程学院济南250353 沂水县食品药品监督管理局山东临沂276400 青岛康大食品有限公司山东青岛266400

研究了以黑米粉为原料制取黑米色素的工艺条件,选取乙醇为浸提剂,通过正交试验确定黑米色素的最佳提取工艺为:料液比为1:50,乙醇体积分数95%,pH值为1.8,浸提温度60℃,浸提时间90 min。同时对色素的耐酸性、耐氧化性、耐光性、耐热性进... 详细信息

研究了以黑米粉为原料制取黑米色素的工艺条件,选取乙醇为浸提剂,通过正交试验确定黑米色素的最佳提取工艺为:料液比为1:50,乙醇体积分数95%,pH值为1.8,浸提温度60℃,浸提时间90 min。同时对色素的耐酸性、耐氧化性、耐光性、耐热性进行了探讨。结果表明:黑米色素不稳定,易受光照、温度、氧化剂等因素的影响而发生褪色或变色。

关键词：黑米色素提取工艺稳定性

Effect of cholesterol metabolism on hepatolithiasis

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World Journal of Gastroenterology 2025年第1期31卷 157-162页

作者： Lin Zheng Zi-Yu Ye Jun-ji Ma Department of Gastroenterology The Second Hospital of Hebei Medical UniversityHebei Key Laboratory of GastroenterologyHebei Institute of GastroenterologyHebei Clinical Research Center for Digestive DiseasesNo.215 Heping West RoadShijiazhuang 050000Hebei ProvinceChina

Surgical intervention is currently the primary treatment for hepatolithiasis;how-ever,some patients still experience residual stones and high recurrence rates after *** metabolism seems to play an important role in hepatoli-thiasis pathogenesis.A high cholesterol diet is one of the significant reasons for the increasing incidence of ***,regular diet and appropriate medical intervention are crucial measures to prevent hepatolithiasis and reduce recurrence rate after *** dietary cholesterol and drugs that increase cholesterol stone solubility are key therapeutic approaches in treating *** article discusses the cholesterol metabolic pathways related to the pathogenesis of hepatolithiasis,as well as food intake and targeted therapeutic drugs.

关键词： Hepatolithiasis Cholesterol metabolism High-fat diet 3-hydroxy-3-methylglutaryl-coenzyme A reductase Interlobular bile duct

Magneto‑Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility

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Nano-Micro Letters 2025年第2期17卷 401-416页

作者： Chen Li Leilei Liang Baoshan Zhang Yi Yang Guangbin ji School of Electronic Science and Engineering Nanjing UniversityNanjing 210093People’s Republic of China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR cloaking mechanisms and functional integration ***,we propose a multiscale hierarchical structure design,integrating wrinkled MXene IR shielding layer and flexible Fe_(3)O_(4)@C/PDMS microwave absorption *** top wrinkled MXene layer induces the intensive diffuse reflection effect,shielding IR radiation signals while allowing microwave to pass ***,the permeable microwaves are assimilated into the bottom Fe_(3)O_(4)@C/PDMS layer via strong magneto-electric *** theoretical and experimental optimization,the assembled stealth devices realize a near-perfect stealth capability in both X-band(8–12 GHz)and long-wave infrared(8–14μm)wavelength ***,it delivers a radar cross-section reduction of−20 dB m^(2),a large apparent temperature modulation range(ΔT=70℃),and a low average IR emissivity of ***,the optimal device demonstrates exceptional curved surface conformability,self-cleaning capability(contact angle≈129°),and abrasion resistance(recovery time≈5 s).This design strategy promotes the development of multispectral stealth technology and reinforces its applicability and durability in complex and hostile environments.

关键词： Microwave absorption Radar-infrared compatible stealth Wrinkled MXene Magneto-dielectric synergy Multifunction

Epitaxial etching of organic single crystals

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Chinese Chemical Letters 2022年第1期33卷 533-536页

作者： Cong Zhang Daizong ji Lang jiang yunqi Liu Dacheng Wei State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China Institute of Molecular Materials and Devices Fudan UniversityShanghai 200433China Institute of Chemistry Chinese Academy of SciencesBeijing 100190China

Organic single crystals(OSCs)have received increasing interest in the last decades for their potential applications in flexible *** there are various subtractive manufacturing methods of organic electronics,the subtractive manufacturing of OSCs is still a challenge,since OSCs are assembled via weak van-der-Waals interactions which are vulnerable and cannot afford damages and suffer the degradation of performances after the ***,we develop an epitaxial etching strategy which clips the OSCs and keeps high-quality crystalline nature of the resulting *** a result,high-quality organic micro-ribbon arrays are fabricated which maintains 89%charge mobility in average compared with original OSCs,showing great potential of this subtractive manufacturing method in future organic electronics.

关键词： Epitaxial etching Organic single crystals Subtractive manufacturing Field-effect transistor Organic semiconductor

Surface micro-arrays enhancing electromagnetic interference shielding of polydimethylsiloxane/multiwalled carbon nanotubes nanocomposites

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Nano Research 2025年第1期18卷 508-519页

作者： Ke jiang Zhi Chen ji Yu Chen Zheng Shan Huang Ming Wang Chongqing Key Laboratory of Soft-Matter Material Manufacturing School of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China School of Mechanics Civil Engineering and ArchitecturesNorthwestern Polytechnical UniversityXi’an 710072China jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China

Herein,the electromagnetic shielding performance of surface concave-convex(SC)and zig-zag micro-arrays was studied by using a simulation prediction and a three-dimensional(3D)printing custom ***,surface stripe concaveconvex(SSC)and surface cylindrical concave-convex(SCC)micro-arrays with or without zig-zag micro-arrays are designed,and their shielding performance is simulated in multi-bands(C-,X-band).The multiwalled carbon nanotubes/polydimethylsiloxane composites(MWCNT/PDMS)with different SC structures and different electrical conductivity are molded in acrylonitrile-butadiene-styrene copolymer(ABS)molds which are printed by a 3D *** results show that the electromagnetic interference shielding effectiveness(EMI SE)of the samples can be enhanced by constructing the SC micro-arrays with zig-zag micro-arrays,and improving with the increase of conductivity and *** addition,the shielding mechanism of the SC-MWCNT/PDMS composites is investigated and discussed by an electromagnetic simulation.

关键词： surface micro-arrays electrical properties electromagnetic interference(EMI)shielding three-dimensional(3D)printing