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Nanopore design of sulfur doped hollow carbon nanospheres for superior potassium-ion battery anodes

Rare Metals 2024年第5期43卷 2103-2114页

作者： Zhen-Dong Liu Hui-Yan Feng Yu-chen Wang Fei Wang yue Liu Jian-Xiao Yang yue Gu Jun Tan chong Ye cheng-Zhi Zhang Ji Hua Laboratory Foshan 528000China School of chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Hunan province Key Laboratory for Advanced carbon Materials and Applied Technology College of Materials Science and EngineeringHunan UniversityChangsha 410082China

Sulfur doped carbonaceous materials are promising anodes for potassium-ion batteries because of their ability to bridge active sites and induce c/S electron coupling,resulting in increased ion storage c.p.citance However,the large potassium ions could cause significant volume expansion and structure collapse during operation in sulfur doped carbonaceous anodes,which lead to rapidly c.p.city sacrifice during long-term *** design for anchoring sulfur atom in carbon skeleton is a novel way to alleviate the structure collapse and maintain the cycling ***,this study developed a controlled nanopore and sulfur doped carbon sphere structure(S-NpHcSs).In potassium-ion batteries S-NpHcSs anode demonstrated exc.p.ional performance with a high reversible c.p.city of 247 mAh·g^(–1)after 50 cycles at 0.2 A·g^(–1)and delivered a long cycle stability of 600 cycles at a high current density of 1.0 A·g^(–1).Interconnected nanopores and doped sulfur structure not only expand the accumulation space and offer ample active sites for diffusion and adsorption of potassium ions,but also build stable channels through nanopore structure to ensure the cyclic *** finding provides a fundamental theory for designing nanopore structures and introducing sulfur doped carbonaceous materials to enhance c.p.citive potassium storage and long cycle stability.

关键词： Nanopore carbon materials Sulfur doping Anode potassium-ionbatteries

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Status of biomarker development for frontotemporal dementia and amyotrophic lateral sclerosis

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Neural Regeneration Research 2024年第10期19卷 2117-2118页

作者： yue Yang Qi cheng Jianqun Gao Woojin Scott Kim Brain and Mind centre&School of Medical Sciences The University of SydneySydneyNSWAustralia Department of Neurology and Neurophysiology Liverpool HospitalSydneyNSWAustralia Stroke and Neurology Research Group Ingham Institute for Applied Medical ResearchSydneyNSWAustralia Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation ShanghaiChina clinical Research center for Anesthesiology and perioperative Medicine ShanghaiChina Translational Research Institute of Brain and Brain-Like Intelligence Shanghai Fourth People’s HospitalSchool of MedicineTongji UniversityShanghaiChina

Frontotemporal dementia(FTD) and amyotrophic lateral sclerosis(ALS) are neurodegenerative diseases that belong to the same disease spectrum,with overlapping of genetic and pathological *** mutations in TARDBp,c9ORF72,... 详细信息

关键词： amyotrophic sclerosis diseases

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Regulating the oxidation state of pd to enhance the selective hydrogenation for 5-hydroxymethylfurfural

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chinese Journal of chemical Engineering 2024年第8期72卷 60-68页

作者： Xin Li yue Ma Xuning Wang Jianguo Wu Dong cao Daojian cheng State Key Laboratory of Organic-Inorganic composites and college of chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China

The highly selective hydrogenation of 5-hydroxymethylfurfural to 2,5-dihydroxymethylfuran is an important reaction in the field of biomass hydrogenation,because it is a bridge between biomass resources and chemical ***,we precisely constructed carbon nitride supported pd-based catalysts by a simple impregnation-reduction *** changing the reduction temperature,catalysts with different oxidation state could be precisely ***,the important correlation between the ratio of pd^(0)/pd^(2+)and catalytic activity is revealed during the selective hydrogenation of *** pd/g—c_(3)N_(4)—300 catalyst with a pd^(0)/pd^(2+)ratio of 3/2 showed the highest catalytic activity,which could get 96.9%5-hydroxymethylfurfural conversion and 90.3%2,5-dihydroxymethylfuran *** density functional theory calculation revealed that the synergistic effect between pd0and pd2+in pd/g—c_(3)N_(4)—300 system could boost the adsorption of the substrate and the dissociation of *** this work,we highlight the important correlation between metal oxidation state and catalytic activity,which provides valuable insights for the rational design of precious metal catalysts for hydrogenation reactions.

关键词： pd/g-c_(3)N_(4) Selective hydrogenation 5-hydroxymethylfurfural 2,5-dihydroxymethylfuran Oxidation state

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Exercise-induced adaptation of neurons in the vertebrate locomotor system

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Journal of Sport and Health Science 2024年第2期13卷 160-171页

作者： yue Dai Yi cheng Renkai Ge Ke chen Liming Yang Key Lab of Adolescent Health Assessment and Exercise Intervention of Ministry of Education College of Physical Education and Health CareEast China Normal UniversityShanghai 200241China Shanghai Key Laboratory of Multidimensional Information processing School of Communication and Electronic EngineeringEast China Normal UniversityShanghai 200241China School of physical Education and Health care East China Jiaotong UniversityNanchang 330013China Key Laboratory of High confidence Software Technologies of Ministry of Education School of Computer SciencePeking UniversityBeijing 100871China

Vertebrate neurons are highly dynamic cells that undergo several alterations in their functioning and physiologies in adaptation to various external *** particular,how these neurons respond to physical exercise has long been an area of active *** of the vertebrate locomotor system’s adaptability suggest multiple mechanisms are involved in the regulation of neuronal activity and properties during *** this brief review,we highlight recent results and insights from the field with a focus on the following mechanisms:(a)alterations in neuronal excitability during acute exercise;(b)alterations in neuronal excitability after chronic exercise;(c)exercise-induced changes in neuronal membrane properties via modulation of ion channel activity;(d)exercise-enhanced dendritic.p.asticity;and(e)exercise-induced alterations in neuronal gene expression and protein *** hope is to update the community with a cellular and molecular understanding of the recent mechanisms underlying the adaptability of the vertebrate locomotor system in response to both acute and chronic.p.ysical exercise.

关键词： Dendritic.p.asticity Excitability Exercise Ion channel modulation Neuron adaptation

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Improvement for creep strength of a second-generation single crystal superalloy by design of heat treatments

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Rare Metals 2024年第1期43卷 342-350页

作者： Wan-Shun Xia Xin-Bao Zhao Jia-chen Xu Quan-Zhao yue Qing-Qing Ding Huan-chang Duan yue-Feng Gu Hong-Bin Bei Ze Zhang Institute of Superalloys Science and Technology School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Silicon and Advanced Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China

Design of heat treatments is related to the key technology for development of nickel-based single crystal superalloys(Ni-SXs). Based on the full understanding of the solidification characteristics, this work applies optimization design of heat treatments for a second-generation Ni-SX. Microstructure evolution and creep properties are compared in the material under conventional/standard(Std.) and optimized(Opt.) treatments. For the Std. sample,strong dendritic segregations determine inconsistent microstructure evolution in the dendritic(D) and interdendritic region(ID), while the latter serves as weak area to have the prior microcrack initiation, damaging overall performance of the alloy. The Opt. treatment applies higher homogenization temperature, leading to overall reduced segregations, while not inducing inc.p.ent melting. A lower temperature of first-step ageing is used to lower the size ofγ'particles. These help to form the more uniform microstructure in dendritic and interdendritic region and relieve the inconsistent microstructure evolution. The balanced local strength makes ID no longer as the weak area,thus restricting microcrack initiation. Great improvement of high temperature and low stress property is obtained by this progress, leading to the pronounced increase of creep rupture life under 1100 °c/140 Mpa.

关键词： Single crystal superalloy Heat treatment Segregation Solidification creep property

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Molecular Dynamics Simulation Studies on the Micromorphology and proton Transport of Nafion/Ti_(3)c_(2)T_(x) composite Membrane

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chinese Journal of polymer Science 2024年第3期42卷 373-387,I0009页

作者： Zhi-yue Han Su-peng pei chun-Yang Yu Yong-Feng Zhou School of chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China School of chemistry&chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Green and High-end Utilization of Salt Lake Resources Chinese Academy of SciencesXining 810008China

The perfluorosulfonic acid(pFSA) membrane doped with two-dimensional conductive filler Ti_(3)c_(2)T_(x) is a fuel cell proton exchange membrane with high application potential. Experimental studies showed that the proton conductivity of Nafion/Ti_(3)c_(2)T_(x) composite membrane is improved significantly compared with that in pure Nafion. However, the microsc.p.c mechanism of doping on the enhancement of membrane performance is remain unclear now. In this work, molecular dynamics simulation was used to investigate the microsc.p.c morphology and proton transport behaviors of Nafion/Ti_(3)c_(2)T_(x) composite membrane at the molecular level. The results shown that there were significant differences about the diffusion kinetics of water molecules and hydroxium ions in Nafion/Ti_(3)c_(2)T_(x) at low and high hydration levels in the nanoscale *** the increase of water content, Ti_(3)c_(2)T_(x) in membrane was gradually surrounded by ambient water molecules to form a hydration layer, and forming a relatively continuous proton transport channel between Nafion polymer and Ti_(3)c_(2)T_(x) monomer. The continuous proton transport channel could increase the number of binding sites of proton and thus achieving high proton conductivity and high mobility of water molecules at higher hydration level. The current work can provide a theoretical guidance for designing new type of Nafion composite membranes.

关键词： Nafion/Ti_(3)c_(2)T_(x)composite membrane proton transport Molecular dynamics simulation

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Separation density prediction of geldart A^(-)dense medium in gas-solid fluidized bed coal beneficiators

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particuology 2024年第9期92卷 251-262页

作者： chenyang Zhou chengguo Liu yue Yuan Zhijie Fu Jesse Zhu chenlong Duan School of chemical Engineering and Technology China University of Mining and TechnologyXuzhou221116China particle Technology Research centre Western UniversityLondonOntarioN6A 5B9Canada

Gas-solid Fluidized Bed coal Beneficiator(GFBcB)process is a crucial dry coal beneficiation fluidization *** work employs the GFBcB process alongside a novel Geldart A^(-)dense medium,consisting of Geldart A magnetite particles and Geldart c ultrafine coal,to separate small-size separated objects in the *** effects of various operational conditions,including the volume fraction of ultrafine coal,the gas velocity,the separated objects size,and the separation time,were investigated on the GFBcB's separation *** results indicated that the probable error for 6∼3 mm separated objects could be controlled within 0.10 g/cm^(3).compared to the traditional Geldart B/D dense medium,the Geldart A/A^(-)dense medium exhibited better size-dependent separation performance with an overall probable error 0.04∼0.12 g/cm^(3).Moreover,it achieved a similar separation accuracy to the Geldart B/D dense medium fluidized bed with different external energy for the small-size object *** work furthermore validated a separation density prediction model based on theoretical derivation,available for both Geldart B/D dense medium and Geldart A/A^(-)dense medium at different operational conditions.

关键词： GFBcB Geldart A^(-)dense medium Separation density Separated objects size prediction model

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constructing Al@c-Sn pellet anode without passivation layer for lithium-ion battery

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 552-561页

作者： Kangzhe cao Sitian Wang Yanan He Jiahui Ma Ziwei yue Huiqiao Liu college of chemistry and chemical Engineering Xinyang Normal UniversityXinyang 464000China Xinyang Key Laboratory of Low-carbon Energy Materials Xinyang 464000China Henan province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan Xinyang 464000China

Al is considered as a promising lithium-ion battery(LIBs)anode materials owing to its high theoretical c.p.city and appropri-ate lithation/de-lithation ***,its inevitable volume expansion causes the electrode structure instability,leading to poor cyclic ***’s worse,the natural Al2O3 layer on commercial Al pellets is always existed as a robust insulating barrier for elec-trons,which brings the voltage dip and results in low reversible ***,this work synthesized core-shell Al@c-Sn pellets for LIBs by a plus-minus *** this proposal,the natural Al2O3 passivation layer is eliminated when annealing the pre-introduced Sncl2,meanwhile,polydopamine-derived carbon is introduced as dual functional shell to liberate the fresh Al core from re-oxidization and alle-viate the volume *** from the addition of c-Sn shell and the elimination of the Al2O3 passivation layer,the as-prepared Al@c-Sn pellet electrode exhibits little voltage dip and delivers a reversible c.p.city of 1018.7 mAh·g^(-1) at 0.1 A·g^(-1) and 295.0 mAh·g^(-1) at 2.0 A·g^(-1)(after 1000 cycles),***,its diffusion-controlled c.p.city is muchly improved compared to those of its counterparts,confirming the well-designed nanostructure contributes to the rapid Li-ion diffusion and further enhances the lithium storage activity.

关键词： lithium-ion battery high-performance anode aluminum passivation layer plus-minus strategy

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Different lymph node staging systems for predicting the prognosis of colorectal neuroendocrine neoplasms

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 1745-1755页

作者： Yuan-Yi Zhang yue-Wei cai Xia Zhang Department of pathology Zhaoqing Medical CollegeZhaoqing 526020Guangdong ProvinceChina Department of Emergency Zhaoqing Second People’s HospitalZhaoqing 526020Guangdong ProvinceChina Department of pathology and physiology Zhaoqing Medical CollegeZhaoqing 526020Guangdong ProvinceChina

BAcKGROUND colorectal neuroendocrine neoplasms(NENs)are a rare malignancy that primarily arises from the diffuse distribution of neuroendocrine cells in the colon and *** studies have pointed out that the status of lymph node may be used to predict the *** To investigate the predictive values of lymph node ratio(LNR),positive lymph node(pLN),and log odds of pLNs(LODDS)staging systems on the prognosis of colorectal NENs treated surgically,and compare their predictive *** This cohort study included 895 patients with colorectal NENs treated surgically from the Surveillance,Epidemiology,and End Results *** endpoint was mortality of patients with colorectal NENs treated surgically.X-tile software was utilized to identify most suitable thresholds for categorizing the LNR,pLN,and *** were selected in a random manner to form training and testing *** prognosis of surgically treating colorectal NENs was examined using multivariate cox analysis to assess the associations of LNR,pLN,and LODDS with the prognosis of colorectal NENs.c-index was used for assessing the predictive *** conducted a subgroup analysis to explore the different lymph node staging systems’predictive *** After adjusting all confounding factors,pLN,LNR and LODDS staging systems were linked with mortality in patients with colorectal NENs treated surgically(pprognostic value for patients with colorectal NENs treated surgically than pLN and LNR staging *** results were obtained in the different G staging subgroup ***,the area under the receiver operating characteristic curve values for LODDS staging system remained consistently higher than those of pLN or LNR,even at the 1-,2-,3-,4-,5-and 6-year follow-up *** LNR,pLN,and LODDS were found to significantly predict the prognosis of patients with colorectal NENs treated surgically.

关键词： positive lymph node Lymph node ratio Log odds of positive lymph nodes prognosis colorectal neuroendocrine neoplasms

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c.p.er-Free click chemistry-Mediated Assembly of Single Quantum Dot Nanosensor for Accurately Monitoring Locus-Specific m^(6)A in cancer cells

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chinese Journal of chemistry 2024年第5期42卷 499-504页

作者： yue-Ying Li Ning-Ning Zhao Yi-Xuan Geng Qian Han Jian-Ge Qiu Bing-Hua Jiang Zi-yue Wang chun-Yang Zhang Translational Medicine center The First Affiliated Hospital of Zhengzhou UniversityThe Academy of Medical SciencesHenan Institute of Medical and Pharmaceutical Sciences BGI CollegeZhengzhou UniversityZhengzhouHenan450052 China college of chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinanShandong250014 China School of chemistry and chemical Engineering Southeast UniversityNanjingJiangsu211189 China

N6-methyladenosine(m^(6)A)plays an important role in embryogenesis,nuclear export,transcription splicing,and protein translation ***,we demonstrate a c.p.er-free click chemistry-mediated assembly of single quantum dot(QD)nanosensor for accurately monitoring locus-specific m^(6)A in cancer *** m^(6)A-sensitive endoribonuclease MazF can digest the unmethylated A-RNA,and the intact m^(6)A-RNA then hybridizes with DNA probes a and b to produce a sandwich hybrid,initiating the click chemistry to generate probe a–b ligation product via first tandem ligation detection reaction(LDR)***,DNA probes c and d can hybridize with the probe a–b ligation product to generate the probe c–d ligation product via second LDR *** LDR cycles can be repeated through denaturation and annealing reaction to generate abundant biotin-/fluorophore-modified probe c–d ligation products that can easily assemble on the QD surface to induce distinct fluorescence resonance energy transfer(FRET)between QD and *** assay can be homogenously performed without the involvement of c.p.er catalyst,m^(6)A-specific antibody,radioactive labeling,ligase enzyme,enzymatic reverse transcription,and next-generation ***,it can discriminate even 0.01% m^(6)A level in complex samples and accurately measure cellular m^(6)A-RNA expression,providing a promising avenue for clinical diagnostics and biomedical research.

关键词： RNA methylation click chemistry Förster resonance energy transfer Biosensor cancer

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