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Magnetic Resonance Letters 2024年第2期4卷 46-53页

作者： Xiaoli Xia Lei Zhu Weiping Tang luming Peng Junchao chen School of Chemistry and Chemical Engineering Shanghai Jiao Tong University800 Dongchuan RoadShanghai200240China Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences School of Chemistry and Chemical EngineeringNanjing University163 Xianlin RoadNanjing210023China State Key Laboratory of Space Power-Sources Technology Shanghai Institute of Space Power-SourcesShanghai200245China

Recent advances in utilizing ^(17)O isotopic labeling methods for solid-state nuclear magnetic resonance(NMR)investigations of metal oxides for lithium-ion batteries have yielded extensive insights into their structural and dynamic details.Herein,we commence with a brief introduction to recent research on lithium-ion battery oxide materials studied using ^(17)O solid-state NMR spectroscopy.Then we delve into a review of ^(17)O isotopic labeling methods for tagging oxygen sites in both the bulk and surfaces of metal oxides.At last,the unresolved problems and the future research directions for advancing the ^(17)O labeling technique are discussed.

关键词： ^(17)O solid-state NMR ^(17)O isotopic labeling methods Bulk and surfaces of metal oxides DFT calculation

Enhancing alkaline water oxidation with NiFe alloy-encapsulated nitrogen-doped vertical graphene array

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Nano Research 2024年第6期17卷 4790-4796页

作者： Jue Nan Beirong Ye Xun He chen Li Wanli Zhang Qian Liu luming Li Wei Chu Xuping Sun Yongqi Zhang School of Integrated Circuit Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Institute of Fundamental and Frontier Science University of Electronic Science and Technology of ChinaChengdu 611731China Institute for Advanced Study Chengdu UniversityChengdu 610106China College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China

Advancing efficient and affordable electrocatalysts to boost the oxygen evolution reaction(OER)is pivotal for sustainable green hydrogen production.Herein,we propose the fabrication of nickel-iron alloy nanoparticles-encapsulated on N-doped vertically aligned graphene array on carbon cloth(NiFe@NVG/CC)as a highly active three-dimensional(3D)catalyst electrode for OER.In 1 M KOH,such NiFe@NVG/CC demonstrates outstanding catalytic performance,necessitating merely overpotential of 245 mV for achieving a current density of 10 mA·cm^(−2),a remarkably low Tafel slope of 36.2 mV·dec^(−1).Furthermore,density functional theory calculations validate that the incorporate of N species into graphene can reinforce the electrocatalytic activity though reducing the reaction energy barrier during the conversion of*O to*OOH intermediates.The outstanding performance and structural benefits of NiFe@NVG/CC offer valuable insights for the development of innovative and efficient electrocatalysts for water oxidation.

关键词： NiFe alloy N-doped vertical graphene array electrocatalyst oxygen evolution reaction density functional theory

Carbothermic reduction of vanadium titanomagnetite with the assistance of sodium carbonate

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International Journal of Minerals,Metallurgy and Materials 2022年第2期29卷 239-247页

作者： luming chen Yulan Zhen Guohua Zhang Desheng chen Lina Wang Hongxin Zhao Fancheng Meng Tao Qi National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100190China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The carbothermic reduction of vanadium titanomagnetite concentrate(VTC)with the assistance of Na_(2)CO_(3)was conducted in an argon atmosphere between 1073 and 1473 K.X-ray diffraction and scanning electron microscopy were used to investigate the phase transformations during the reaction.By investigating the reaction between VTC and Na_(2)CO_(3),it was concluded that molten Na_(2)CO_(3)broke the structure of titanomagnetite by combining with the acidic oxides(Fe_(2)O_(3),TiO_(2),Al_(2)O_(3),and SiO_(2))to form a Na-rich melt and release FeO and MgO.Therefore,Na_(2)CO_(3)accelerated the reduction rate.In addition,adding Na_(2)CO_(3)also benefited the agglomeration of iron particles and the slag–metal separation by decreasing the viscosity of the slag.Thus,Na_(2)CO_(3)assisted carbothermic reduction is a promising method for treating VTC at low temperatures.

关键词： vanadium titanomagnetite sodium carbonate phase transformation carbothermic reduction slag–metal separation

Deadlock Detection:Background,Techniques,and Future Improvements

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ZTE Communications 2024年第2期22卷 71-79页

作者： LU Jiachen NIU Zhi chen Li DONG luming SHEN Taoli Zhejiang University Hangzhou 310058China ZTE Corporation Xi’an 710114China

Deadlock detection is an essential aspect of concurrency control in parallel and distributed systems,as it ensures the efficient utilization of resources and prevents indefinite delays.This paper presents a comprehensive analysis of the various deadlock detection techniques,including static and dynamic approaches.We discuss the future improvements associated with deadlock detection and provide a comparative evaluation of these techniques in terms of their accuracy,complexity,and scalability.Furthermore,we outline potential future research directions to improve deadlock detection mechanisms and enhance system performance.

关键词： deadlock detection static analysis dynamic analysis

3D-printed MoS_(2)/Ni electrodes with excellent electro-catalytic performance and long-term stability for dechlorination of florfenicol

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Journal of Environmental Sciences 2024年第3期137卷 420-431页

作者： Jianhui Xu Pengxu Wang Shenggui chen Lei Li Dan Li Yunfei Zhang Qi Wu Jinhong Fan lumingMa School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China School of Art and Design Guangzhou Panyu PolytechnicGuangzhou 511483China National Engineering Research Center for Urban Pollution Control State Key Laboratory of Pollution Control and Resources ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Dongguan Institute of Science and Technology Innovation Dongguan University of TechnologyDongguan 523808China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Here,we report the production of 3D-printed MoS_(2)/Ni electrodes(3D-MoS_(2)/Ni)with longterm stability and excellent performance by the selective laser melting(SLM)technique.As a cathode,the obtained 3D-MoS_(2)/Ni could maintain a degradation rate above 94.0%for forfenicol(FLO)when repeatedly used 50 times in water.We also found that the removal rate of FLO by 3D-MoS_(2)/Ni was about 12 times higher than that of 3D-printed pure Ni(3D-Ni),attributed to the improved accessibility of H^(*).In addition,the electrochemical characterization results showed that the electrochemically active surface area of the 3D-MoS_(2)/Ni electrode is about 3-fold higher than that of the 3D-Ni electrode while the electrical resistance is 4 times lower.Based on tert-butanol suppression,electron paramagnetic resonance and triple quadrupole mass spectrometer experiments,a“dual path”mechanism and possible degradation pathway for the dechlorination of FLO by 3D-MoS_(2)/Ni were proposed.Furthermore,we also investigated the impacts of the cathode potential and the initial pH of the solution on the degradation of FLO.Overall,this study reveals that the SLM 3D printing technique is a promising approach for the rapid fabrication of high-stability metal electrodes,which could have broad application in the control of water contaminants in the environmental field.

关键词： 3D-print Electroreduction MoS_(2)/Ni Antibiotic Florfenicol

糖尿病患者在生化免疫检验过程中运用化学发光免疫测定技术检验的准确性探讨

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智慧健康 2024年第9期10卷 125-128页

作者：陈路明湛江天源南油综合医院广东湛江524000

目的分析探究生化免疫检验糖尿病中应用化学发光免疫测定技术对检验准确性的影响。方法随机筛选2022年1月—2023年6月来本院就诊的684例糖尿病患者为研究对象,将其纳入观察组,同时选取同期接受健康体检者500例纳入对照组,两组对象均应... 详细信息

目的分析探究生化免疫检验糖尿病中应用化学发光免疫测定技术对检验准确性的影响。方法随机筛选2022年1月—2023年6月来本院就诊的684例糖尿病患者为研究对象,将其纳入观察组,同时选取同期接受健康体检者500例纳入对照组,两组对象均应用化学发光免疫测定技术开展生化免疫检验,对比两组血糖水平、C肽水平、胰岛素水平、阳性检出率。结果检验结果显示,观察组血糖水平均高于对照组,对比差异有统计学意义(P<0.05)。组间C肽水平、胰岛素水平对比差异有统计学意义(P<0.05)。阳性检出率测定结果呈现为观察组高于对照组,对比差异有统计学意义(P<0.05)。结论临床生化免疫检验中针对糖尿病的诊断采取化学发光免疫测定法不仅能获得较高的准确性,其结果还能为临床治疗提供可靠的数据支持,值得借鉴。

关键词：糖尿病生化免疫检验化学发光免疫测定技术检验准确性

不同品种核桃仁成分及烘烤对其油脂品质和内源性蛋白酶活性的影响

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中国油脂 2024年第5期49卷 42-47页

作者：王鲁明黄闽敏陈业明江南大学食品学院江苏无锡214122 新疆林科院经济林研究所乌鲁木齐830092

旨在为工业去衣核桃仁的烘烤处理条件提供参考,选择我国4个品种核桃仁作为研究对象,比较了4种核桃仁的蛋白质和脂肪含量,分析了其氨基酸和脂肪酸组成,并考察了烘烤(60~140℃烘烤1~3 h使水分含量降至5%以下)对这4种去衣核桃仁油脂品质及... 详细信息

旨在为工业去衣核桃仁的烘烤处理条件提供参考,选择我国4个品种核桃仁作为研究对象,比较了4种核桃仁的蛋白质和脂肪含量,分析了其氨基酸和脂肪酸组成,并考察了烘烤(60~140℃烘烤1~3 h使水分含量降至5%以下)对这4种去衣核桃仁油脂品质及内源性蛋白酶活性的影响。结果表明:核桃仁蛋白质(13.73%~17.54%)、脂肪(69.10%~72.77%)含量及其油脂亚麻酸含量(8.77%~13.23%)在品种间存在显著性差异(p<0.05),而氨基酸组成未表现出明显差异;随着烘烤温度的升高,4种去衣核桃仁油脂的酸值及过氧化值均呈现不断上升的趋势,但均未超过国家标准要求;未烘烤核桃仁内源性蛋白酶活性在品种间也存在显著性差异(p<0.05);烘烤温度对核桃仁内源性蛋白酶活性有显著影响,60~80℃烘烤尚且保留了大部分的内源性蛋白酶活性,而100~140℃烘烤核桃仁内源性蛋白酶活性大幅度下降甚至丧失。综上,烘烤对去衣核桃仁油脂及内源性蛋白酶的影响并不因核桃品种的不同而产生差异,60~80℃的烘烤适合生产高内源性蛋白酶活性的去衣核桃仁(坚果类产品)。

关键词：核桃去衣核桃仁烘烤温度核桃油内源性蛋白酶

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Deep brain-machine interfaces:sensing and modulating the human deep brain

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National Science Review 2022年第10期9卷 19-33页

作者： Yanan Sui Huiling Yu chen Zhang Yue chen Changqing Jiang luming Li National Engineering Research Center of Neuromodulation Tsinghua University Precision Medicine & Healthcare Research Center Tsinghua-Berkeley Shenzhen Institute Tsinghua University IDG/Mc Govern Institute for Brain Research at Tsinghua University Institute of Epilepsy Beijing Institute for Brain Disorders

Different from conventional brain-machine interfaces that focus more on decoding the cerebral cortex,deep brain-machine interfaces enable interactions between external machines and deep brain structures.They sense and modulate deep brain neural activities,aiming at function restoration,device control and therapeutic improvements.In this article,we provide an overview of multiple deep brain recording and stimulation techniques that can serve as deep brain-machine interfaces.We highlight two widely used interface technologies,namely deep brain stimulation and stereotactic electroencephalography,for technical trends,clinical applications and brain connectivity research.We discuss the potential to develop closed-loop deep brain-machine interfaces and achieve more effective and applicable systems for the treatment of neurological and psychiatric disorders.

关键词： deep brain stimulation deep brain–machine interface sensing and modulation stereotactic electroencephalography

A novel approach to synthesize porous graphene by the transformation and deoxidation of oxygen-containing functional groups

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Chinese Chemical Letters 2019年第12期30卷 2313-2317页

作者： Da Zhang luming chen Yaochun Yao Feng Liang Tao Qu Wenhui Ma Bing Yang Yongnian Dai Yong Lei Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650093China Institute of Physics&IMN Macro Nanos(ZIK) Ilmenau University of Technologyllmenau 98693Germany

In this study,impurity-free porous graphene(PG) with intrinsic pore structure was synthesized through a facile acid-alkali etching-assisted sonication approach.The pore structure appears on the surface of graphene sheets due to intrinsic defects of graphene.The PG possessed an extremely high specific surface area of 2184 m^2/g,the size of^5 μm and layer numbers of 3-8.Additionally,PG contained micropores and mesopores simultaneously,with an average pore diameter of approximately 3 nm.The effects of acid,alkali,and ultrasound treatment on PG preparation were elucidated by transmission electron microscopy and fourier transform infrared spectroscopy.First,in an acidic solution,oxygen-containing functional groups(hydroxyls,carboxyl,and epoxides) were formed due to the hydrolysis of sulfate and continuous transformations of these functional groups on graphene oxide.Second,under the synergistic effects of alkali and ultrasound treatment,PG was obtained due to the loss of carboxyl and epoxide groups.A new route for preparing PG was provided by the proposed method.

关键词： Hydrolysis Deoxidation Ultrasound Oxygen-containing functional group Porous graphene

脑卒中患者与照顾者家庭亲密关系变化体验质性研究的Meta整合

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军事护理 2024年第2期41卷 93-97页

作者：陈灿翟清华李鑫静郝娟娟王露茗郑州大学护理与健康学院河南郑州450001 郑州大学第二附属医院护理学教研室河南郑州450014

目的全面了解脑卒中患者与照顾者家庭亲密关系变化过程中的体验,为制订脑卒中患者及照顾者二元应对干预方案提供参考。方法检索PubMed、Web of Science、Embase、CINAHL、Cochrane Library、知网、万方、维普等中英文数据库,筛选关于脑... 详细信息

目的全面了解脑卒中患者与照顾者家庭亲密关系变化过程中的体验,为制订脑卒中患者及照顾者二元应对干预方案提供参考。方法检索PubMed、Web of Science、Embase、CINAHL、Cochrane Library、知网、万方、维普等中英文数据库,筛选关于脑卒中患者或照顾者家庭亲密关系变化体验相关的质性研究,检索时限为建库至2023年1月。结果共纳入14篇研究,提炼出34个研究结果,最终归纳形成7个新类别,综合出3个整合结果:亲密关系变化过程中负性体验突出;亲密关系变化的适应困境;积极适应关系变化,获得正性体验。结论护理人员应加强对脑卒中患者与照顾者家庭亲密关系变化的动态评估,识别关系变化过程中的未满足需求,促进多元支持系统的建立,引导家庭亲密关系平稳转变。

关键词：脑卒中照顾者家庭亲密关系 Meta整合