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Unveiling the correlation between structural alterations and enhanced high-voltage cyclability in Na-deficient P3-type layered cathode materials via Li incorporation

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Electron 2024年第1期2卷 164-176页

作者： Xiaoxia Yang Suning Wang Hang Li Jochi Tseng Zhonghua Wu Sylvio Indris Helmut ehrenberg Xiaodong Guo Weibo Hua School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'anChina School of Chemical Engineering Sichuan UniversityChengduChina Institute for Applied materials(IAm) Karlsruhe Institute of Technology(KIT)Eggenstein‐LeopoldshafenGermany Diffraction and Scattering Division Japan Synchrotron Radiation Research Institute(JASRI)KoutoSayo‐choSayo‐gunHyogoJapan Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina

With exceptional capacity during high-voltage cycling,P3-type Nadeficient layered oxide cathodes have captured substantial ***,they are plagued by severe capacity degradation over *** this study,tuning and optimizing the phase composition in layered oxides through Li incorporation are proposed to enhance the high-voltage *** structural dependence of layered Na_(2/3)LixNi_(0.25)mn_(0.75)O_(2)þδoxides on the lithium content(0.0≤x≤1.0)offered during synthesis is investigated systematically on an atomic ***,increasing the Li content triggers the formation of mixed P2/O3-type or P3/P2/O3-type layered *** the voltage window is 1.5-4.5 V,P3-type Na2/3Ni_(0.25)mn_(0.75)O_(2)(NL0.0NmO,R3m)material exhibits a sequence of phase transformations throughout the process of(de)sodiation,that is,O3⇌P3⇌O30⇌O3″.Such complicated phase transitions can be effectively suppressed in the Na2/3Li_(0.7)Ni_(0.25)mn_(0.75)O_(2.4)(NL_(0.7)NmO)oxide with P2/P3/O3-type mixed ***,cathodes made of NL0.7NmO exhibit a substantially enhanced cyclic performance at high voltages compared to that of the P3-type layered NL0.0NmO ***,NL0.7NmO dem.nstrates an outstanding capacity retention of 98%after 10 cycles at 1 C within 1.5-4.5 V,much higher than that of NL0.0NmO(83%).This work delves into the intricate realm of bolstering the high-voltage durability of layered oxide cathodes,paving the way for advanced sodium-ion battery technologies.

关键词： high-voltage cycling Li incorporation phase transition sodium ion batteries triphasic composites

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神经元中STING通过诱导抗病毒干扰素刺激基因促进小鼠疼痛的消退

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中国疼痛医学杂志 2024年第9期30卷 641-644页

作者：凌月娟(译) 高永静(校) 南通大学疼痛医学研究院/特种医学研究院

炎症和疼痛是损伤、感染或慢性疾病常见的病理反应。虽然急性炎症对疼痛缓解和阿片类镇痛至关重要,但其过程中发生的不良反应可能导致向慢性疼痛的转变。该研究发现,炎症激活了背根神经节伤害性感受器中干扰素(interferon, IFN)基因的胞... 详细信息

炎症和疼痛是损伤、感染或慢性疾病常见的病理反应。虽然急性炎症对疼痛缓解和阿片类镇痛至关重要,但其过程中发生的不良反应可能导致向慢性疼痛的转变。该研究发现,炎症激活了背根神经节伤害性感受器中干扰素(interferon, IFN)基因的胞质DNA感应蛋白刺激因子(stimulator of interferon genes, STING)。STING在神经元激活通过TANK结合激酶1 (TANK binding kinase 1, TBK1)促进信号传导,并触发IFN-β反应,介导疼痛消退。该研究还发现,在伤害感受器特异性获得性STING突变的小鼠表现出IFN基因特征,并通过KCh IP1-Kv4.3降低伤害感受器的兴奋性和炎症性痛觉过敏。研究结果揭示了IFN调节基因和STING下游的KCh IP1在炎症性疼痛消退中的作用。

关键词：伤害感受器慢性疼痛病理反应背根神经节痛觉过敏刺激因子基因特征慢性疾病

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Impact of increasing one-carbon metabolites on traumatic brain injury outcome using pre-clinical models

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Neural Regeneration Research 2024年第8期19卷 1728-1733页

作者： Sanika m.Joshi Theresa Currier Thomas Nafisa m.Jadavji College of Osteopathic medicine Midwestern UniversityGlendaleCAUSA Department of Biomedical Sciences Midwestern UniversityGlendaleCAUSA Department of Child Health College of Medicine–PhoenixUniversity of ArizonaPhoenixAZUSA College of Veterinary medicine Midwestern UniversityGlendaleCAUSA Department of Neuroscience Carleton UniversityOttawaCanada

Traumatic brain injury is a major cause of death and disability worldwide,affecting over 69 million individuals ***-carbon metabolism has been shown to have beneficial effects after brain damage,such as ischemic ***,whether increasing one-carbon metabolite vitam.ns impacts traumatic brain injury outcomes in patients requires more *** aim of this review is to evaluate how one-carbon metabolites impact outcomes after the onset of traumatic brain ***,Web of Science,and Google Scholar databases were searched for studies that examined the impact of B-vitamin supplementation on traumatic brain injury *** search terms included combinations of the following words:traumatic brain injury,dietary supplementation,one-carbon metabolism,and *** focus of each literature search was basic science *** year of publication in the literature searches was not *** analysis of the literature has shown that dietary supplementation of B-vitam.ns has significantly improved the functional and behavioral recove ry of animals with traumatic brain injury compared to *** r,this improvement is dosage-dependent and is contingent upon the onset of supplementation and whether there is a sustained or continuous delive ry of vitamin supplementation post-traumatic brain *** details of supplementation post-traumatic brain injury need to be further ***,we conclude that B-vitamin supplementation improves behavioral outcomes and reduces cognitive impairment post-traumatic brain injury in animal model *** investigation in a clinical setting should be stro ngly considered in co njunction with current medical treatments for traumatic brain injury-affected individuals.

关键词： folic acid nicotinamide one-carbon metabolism riboflavin traumatic brain injury vitamin B12 vitamin B2 vitamin B3

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绿色荧光蛋白——发现、表达和发展

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生物物理学报 2008年第6期24卷 422-429页

作者： m.ns ehrenberg 罗文新夏宁邵 Department of Cell and molecular Biology BMCUppsalaUniversitySweden 厦门大学国家传染病诊断试剂与疫苗工程技术研究中心

由于在发现和研究绿色荧光蛋白方面做出的贡献，日本科学家下村修（Qsamu Shimomura）、美国科学家马丁·沙尔菲（martin Chalfie）和美籍华裔科学家钱永健（Roser Y Tsien）共同获得了2008年度的诺贝尔化学奖。

关键词：绿色荧光蛋白日本科学家诺贝尔化学奖华裔科学家

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Actin(g) toward a revised understanding of the role of cytoskeletal dynamics in neuronal bioenergetics

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Neural Regeneration Research 2024年第10期19卷 2109-2110页

作者： Sabrina m.Holland Gianluca Gallo Department of Neural Sciences Shriners Pediatric Research CenterLewis Katz School of Medicine at Temple UniversityPhiladelphiaPAUSA

Neurons are energy-demanding *** in energy metabolism can quickly interrupt neuronal function,leading to cell death and *** instance,ischemia rapidly depletes adenosine triphosphate(ATP)thereby disrupting energy-dependent cellular processes crucial for homeostasis,and axon degeneration is preceded by a collapse of axonal ATP levels.

关键词： metabolism homeostasis degeneration

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Autophagy in neuroinflammation after traumatic brain injury

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Neural Regeneration Research 2024年第5期19卷 951-952页

作者： Chinmoy Sarkar marta m.Lipinski Shock Trauma and Anesthesiology Research(STAR)CenterDepartment of AnesthesiologyUniversity of Maryland School of MedicineBaltimoreMDUSA Department of Anatomy and Neurobiology University of Maryland School of MedicineBaltimoreMDUSA

Traumatic brain injury(TBI)is an acquired injury of the brain caused by the impact of external forces on the brain(maas et al.,2008).It is a major cause of death and disability among people of all ages(maas et al.,2008).The primary mechanical injury to the brain initiates a cascade of secondary biochemical events that lead to acute and chronic neurodegeneration and activation of inflammatory pathways(maas et al.,2008).Both brain-resident microglia and blood-derived myeloid cells-macrophages and monocytes that infiltrate the brain due to injury-induced blood-brain barrier damage,contribute to the inflammatory responses after TBI(morganti et al.,2015).

关键词： damage death after

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microstructure Variation of Cold Deformed mP159 Alloy during Aging

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Journal of materials Science & Technology 1996年第2期12卷 109-113页

作者： Han, GW Feng, D Yin, m Yang, ns Central Iron and Steel Research Institute Beijing 100081 China

By comparing the relationship of room temperature yield strength with the reduction of cold rolled mP159 alloy before and after aging at 650 degrees C, and by means of TEm examination on the corresponding microstructures, the occurrence of fcc(alpha)-->hcp(epsilon) martensitic transition in mP159 alloy during cold deformation and the variation of the platelet epsilon phase during aging have been studied. The results show that the platelet a phase is really formed when the cold deformation reaches a critical value, and both the amount and the width of the platelet epsilon phase would further increase during 650 degrees C aging. The increases of the amount and the width of the platelet epsilon phase result in an additional increase of yield strength. Therefore, it is concluded that the additional hardening effect of mP159 alloy after aging is not only from the precipitation of Ni(3)X disperse phase but also from the volume fraction increase of the platelet epsilon phase. Further occurrence of the martensitic transition during aging may be due to the elimination of residual compression stress within matrix induced by the fcc(alpha)-->hcp(epsilon) transition during cold deformation.

关键词： Cobalt alloys

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Descriptors-based machine-learning prediction of cetane number using quantitative structure–property relationship

Energy and AI

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Energy and AI 2024年第3期17卷 168-178页

作者： Rodolfo S.m.Freitas Xi Jiang School of Engineering and materials Science Queen Mary University of LondonMile End RoadLondonE14NSUK

The physicochemical properties of liquid alternative fuels are important but difficult to measure/predict, especially when complex surrogate fuels are concerned. In the present work, machine learning is used to develop quantitative structure–property relationship models. The fuel chemical structure is represented by molecular descriptors, allowing the linking of important features of the fuel composition and key properties of fuel utilization. Feature selection is employed to select the most relevant features that describe the chemical structure of the fuel and several machine learning algorithms are tested to construct interpretable models. The effectiveness of the methodology is dem.nstrated through the development of accurate and interpretable predictive models for cetane numbers, with a focus on understanding the link between molecular structure and fuel properties. In this context, matrix-based descriptors and descriptors related to the number of atoms in the molecule are directly linked with the cetane number of hydrocarbons. Furthermore, the results showed that molecular connectivity indices play a role in the cetane number for aromatic molecules. Also, the methodology is extended to predict the cetane number of ester and ether molecules, leveraging the design of alternative fuels towards fully sustainable fuel utilization.

关键词： Chemical descriptors Quantitative structure-property relationship machine learning Cetane number Fuel design

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The secondary injury cascade after spinal cord injury:an analysis of local cytokine/chemokine regulation

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Neural Regeneration Research 2024年第6期19卷 1308-1317页

作者： Daniel J.Hellenbrand Charles m.Quinn Zachariah J.Piper Ryan T.Elder Raveena R.mishra Taylor L.marti Phoebe m.Omuro Rylie m.Roddick Jae Sung Lee William L.murphy Amgad S.Hanna Department of Neurosurgery University of Wisconsin-Madison School of Medicine and Public HealthMadisonWIUSA Department of Biomedical Engineering University of Wisconsin-MadisonMadisonWIUSA Department of Orthopedics and Rehabilitation University of Wisconsin-MadisonMadisonWIUSA Department of materials Science and Engineering University of Wisconsin-MadisonMadisonWIUSA Forward BIO Institute University of Wisconsin-MadisonMadisonWIUSA

After spinal cord injury,there is an extensive infiltration of immune cells,which exacerbates the injury and leads to further neural ***,a major aim of current research involves targeting the immune response as a treatment for spinal cord *** much research has been performed analyzing the complex inflammatory process following spinal cord injury,there remain major discrepancies within previous literature regarding the timeline of local cytokine *** objectives of this study were to establish an overview of the timeline of cytokine regulation for 2 weeks after spinal cord injury,identify sexual dimorphisms in terms of cytokine levels,and determine local cytokines that significantly change based on the severity of spinal cord *** were inflicted with either a mild contusion,moderate contusion,severe contusion,or complete transection,7 mm of spinal cord centered on the injury was harvested at varying times post-injury,and tissue homogenates were analyzed with a Cytokine/Chemokine 27-Plex *** dem.nstrated pro-inflammatory cytokines including tumor necrosis factorα,interleukin-1β,and interleukin-6 were all upregulated after spinal cord injury,but returned to uninjured levels within approximately 24 hours post-injury,while chemokines including monocyte chemoattractant protein-1 remained upregulated for days *** contrast,several anti-inflammatory cytokines and growth factors including interleukin-10 and vascular endothelial growth factor were downregulated by 7 days *** spinal cord injury,tissue inhibitor of metalloproteinase-1,which specifically affects astrocytes involved in glial scar development,increased more than all other cytokines tested,reaching 26.9-fold higher than uninjured *** a mild injury,11 cytokines dem.nstrated sexual dimorphisms;however,after a severe contusion only leptin levels were different between female and male *** conclusion,pro-inflammatory cytokines in

关键词： astrocytes chemokines cytokines inflammation macrophages microglia secondary damage spinal cord injury

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The effect of electrochemically inactive Ti substituted for Ru in Li_(2)Ru_(1-x)Ti_xO_(3) on structure and electrochemical performance

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Journal of Energy Chemistry 2021年第9期30卷 222-228页

作者： Ye Yao Lu Zhang Florian Sigel Bjorn Schwarz Helmut ehrenberg Gang Chen Fei Du Chunzhong Wang Changchun Normal University Changchun 130031China Key Laboratory of Physics and Technology for Advanced Batteries(ministry of Education) State Key Laboratory of Superhard MaterialsCollege of PhysicsJilin UniversityChangchun 130012China Institute for Applied materials(IAm) Karlsruhe Institute of Technology(KIT)76344 Eggenstein-LeopoldshafenGermany

The approach of substituting electrochemically active with inactive elements has widely been used to improve the electrochemical performance of Li-rich intercalation cathode materials. This especially is true for Li-rich compounds where almost all of the Li+ions are reversibly(de)intercalated during electrochemical cycling. The beneficial mechanism behind this substitution with electrochemically inactive elements is still not clear yet. Li_(2)RuO_(3) is chosen as basis for a model solid solution system to investigate the effect of electrochemically inactive elements owing to its high specific capacity of more than 300 m Ah g^(-1) and the significant contribution of anion redox mechanism. Herein, Li_(2)Ru_(1-x)Ti_xO_(3) solid solution series are synthesized and the effect of substituting with electrochemical inactive Ti for Ru on structure and electrochemical performance have been comprehensively investigated. The electrochemical performance is significantly improved, especially for Li_(2)Ru_(0.8)Ti_(0.2)O_(3), and the capacity retention after 50 cycles increases from 81% to 90%, as compared to the end member Li_(2)RuO_(3). Results of electrochemical impedance spectroscopy show that Ti substitution reduces the charge transfer impedance, which favors the Li+diffusion across the electrolyte–electrode interface and improves the electronic conductivity. For the first time,nuclear magnetic resonance was utilized to confirm that a small part of Ti ions exchange their position with Li ions in the Li layer. This research provides a better understanding of electrochemical inactive element substitution and strong insights for the functional design of the next generation of Li-rich cathode materials.

关键词： Li_(2)Ru_(1-x)Ti_xO_(3) Lithium ion batteries Inactive element substitution XRD NmR

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