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Boron-doped high-entropy oxide toward high-rate and long-cycle layered cathodes for wide-temperature sodium-ion batteries

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Journal of Energy Chemistry 2024年第8期95卷 577-587,I0012页

作者： Yuzhen Dang Zhe Xu Yurong Wu Runguo zheng Zhiyuan Wang Xiaopin lin Yanguo liu zheng-yao li Kai Sun Dongfeng Chen Dan Wang School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004HebeiChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004HebeiChina Neutron Scattering Laboratory Department of Nuclear PhysicsChina Institute of Atomic EnergyBeijing 102413China

03-type layered metal oxides hold great promise for sodium-ion batteries cathodes owing to their energy density ***,the severe irreversible phase transition and sluggish Na^(+)diffusion kinetics pose significant challenges to achieve high-performance layered ***,a boron-doped03-type high entropy oxide Na(Fe_(0.2)Co_(0.15)Cu_(0.05)Ni_(0.2)Mn_(0.2)Ti_(0.2))B_(0.02)O_(2)(NFCCNMT-B_(0.02))is designed and the covalent B-O bonds with high entropy configuration ensure a robust layered *** obtained cathode NFCCNMT-B_(0.02)exhibits impressive cycling performance(capacity retention of 95%and 82%after100 cycles and 300 cycles at 1 and 10 C,respectively)and outstanding rate capability(capacity of 83 mAh g^(-1)at 10 C).Furthermore,the NFCCNMT-B_(0.02)demonstrates a superior wide-temperature performance,maintaining the same capacity level(113,4 mAh g^(-1)@-20℃,121 mAh g^(-1)@25℃,and 119 mAh g^(-1)@60℃)and superior cycle stability(90%capacity retention after 100 cycles at 1 C at-20℃).The high-entropy configuration design with boron doping strategy contributes to the excellent sodium-ion storage *** high-entropy configuration design effectively suppresses irreversible phase transitions accompanied by small volume changes(ΔV=0.65 A3).B ions doping expands the Na layer distance and enlarges the P3 phase region,thereby enhancing Na^(+)diffusion *** work offers valuable insights into design of high-performance layered cathodes for sodium-ion batteries operating across a wide temperature.

关键词： High entropy oxide Born substitution Phase transition Na~+diffusion kinetics Sodium-ion batteries

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面向供水管网漏损监测的传感器优化布置多准则决策分析方法

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长江科学院院报 2024年第9期41卷 178-184页

作者：王莹谭德宝叶松胡祖康姚正利长江科学院空间信息技术应用研究所武汉430010 武汉市智慧流域工程技术研究中心武汉430010 长江科学院武汉430010 长江生态环保集团有限公司武汉430062

供水管网漏损精准监测对于避免水资源浪费具有重要意义,为此,提出一种面向供水管网漏损监测的传感器优化布置多准则决策分析方法。基于充分考虑传感器布置优化的权重、差异阈值和偏好阈值的不确定性,利用信息熵在整个决策空间内对传感... 详细信息

供水管网漏损精准监测对于避免水资源浪费具有重要意义,为此,提出一种面向供水管网漏损监测的传感器优化布置多准则决策分析方法。基于充分考虑传感器布置优化的权重、差异阈值和偏好阈值的不确定性,利用信息熵在整个决策空间内对传感器的初始位置进行筛选再根据漏损监测目标,通过定义一组传感器布置优化准则,利用多准则决策分析方法对初始方案进行排序,得到顾及多组参数及不同偏好场景下各种初始方案的概率排序。为了验证该方法的适用性,采用基准测试管网k1模型开展仿真试验并比较了几种不同的偏好场景。结果表明所提出的方法能够适应顺序优先和最重要的优先顺序,而且能够对方案进行排序和成对比较,避免了使用“黑匣子”对传感器布置方案进行选择。

关键词：供水管网漏损监测传感器优化布置多准则决策分析

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Effect of additives on iron recovery and dephosphorization by reduction roasting-magnetic separation of refractory high-phosphorus iron ore

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International Journal of Minerals,Metallurgy and Materials 2021年第12期28卷 1908-1916页

作者： Shi-chao Wu zheng-yao li Ti-chang Sun Jue Kou Xiao-hui li School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China

The effect of CaCO_(3),Na_(2)CO_(3),and CaF_(2) on the reduction roasting and magnetic separation of high-phosphorus iron ore containing phosphorus in the form of Fe_(3)PO_(7) and apatite was *** results revealed that Na_(2)CO_(3) had the most significant effect on iron recovery and dephosphorization,followed by CaCO_(3),the effect of CaF_(2) was *** mechanisms of CaCO_(3),Na_(2)CO_(3),and CaF_(2) were investigated using X-ray diffraction(XRD),scanning electron microscopy and energy dispersive spectrometry(SEM-EDS).Without additives,Fe_(3)PO_(7) was reduced to elemental phosphorus and formed an iron-phosphorus alloy with metallic *** addition of CaCO_(3) reacted with Fe_(3)PO_(7) to generate an enormous amount of Ca_(3)(PO_(4))_(2) and promoted the reduction of iron ***,the growth of iron particles was *** the addition of Na_(2)CO_(3),the phosphorus in Fe_(3)PO_(7) migrated to nepheline and Na_(2)CO_(3) improved the reduction of iron oxides and growth of iron ***,the recovery of iron and the separation of iron and phosphorus were the *** contrast,CaF_(2) reacted with Fe_(3)PO_(7) to form fine Ca_(3)(PO_(4))2 particles scattered around the iron particles,making the separation of iron and phosphorus difficult.

关键词： alloy phosphorus separation

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High-temperature chlorination of gold with transformation of iron phase

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Rare Metals 2016年第11期35卷 881-886页

作者： zheng-yao li Wei-Wei Wang Kun Yue Ming-Xing Chen School of Civil and Environmental Engineering University of Science and Technology Beijing

Gold in cyanide tailings from Shandong Province is mainly encapsulated by hematite and magnetite at distribution rates of 76.49 % and 10.88 %, ***-reduction one-step roasting of cyanide tailings was conducted under the following conditions： calcium chloride dosage of 6 %, bituminous coal dosage of 30 %, calcium oxide dosage of 10 %（all dosages are *** mass of cyanide tailings） at 1000 ℃ of roasting temperature. X-ray diffraction（XRD）, scanning electron microscopy（SEM）, and chemical-phase analysis were performed to investigate the effects of iron phase transformation on the high-temperature chlorination of *** indicate that the lattice structure of hematite undergoes expansion, pulverization, and reorganization when hematite is reduced to magnetite, which leads to42.03 % gold exposure, and the high-temperature chlorination rate of gold is 41.17 % at the same time. The structure of wustite formed by the reduction in magnetite is porous and loose, and thus 44.02 % of gold is exposed. The high-temperature chlorination rate of gold is increased by41.98 percentage points. When wustite is reduced to metallic iron, 4.42 % of gold is exposed, and the hightemperature chlorination rate of gold is increased by3.38 percentage points. Accordingly, the high-temperature chlorination of gold mainly occurs in two stages, in which Fe_2O_3 is reduced to Fe_3O_4, and Fe_3O_4 is reduced to Fe_xO finally.

关键词： Cyanide tailings Chlorination-reduction one-step roasting Transformation of iron phase Gold

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D-serine reduces memory impairment and neuronal damage induced by chronic lead exposure

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Neural Regeneration Research 2021年第5期16卷 836-841页

作者： Jian-Zhu Bo ling Xue Shuang li Jing-Wen Yin zheng-yao li Xi Wang Jun-Feng Wang Yan-Shu Zhang College of Public Health North China University of Science and TechnologyTangshanHebei ProvinceChina Laboratory Animal Center North China University of Science and TechnologyTangshanHebei ProvinceChina

Although exogenous D-serine has been applied as a neural regulatory intervention in many studies,the role played by D-serine in hippocampal injuries caused by lead exposure remains poorly *** models of chronic lead exposure were established through the administration of 0.05%lead acetate for 8 ***,rats were administered 30 or 60 mg/kg D-serine,intraperitoneally,twice a *** results showed that D-serine treatment shortened the escape latency from the Morris water maze,increased the number of times that mice crossed the original platform location,and alleviated the pathological damage experienced by hippocampal neurons in response to lead *** D-serine administration did not increase the expression levels of the N-methyl-D-aspartate receptor subtype 2B(NR2B)in the hippocampi of lead-exposed rats,60 mg/kg D-serine treatment restored the expression levels of NR2A,which are reduced by lead *** findings suggested that D-serine can alleviate learning and memory impairments induced by lead exposure and that the underlying mechanism is associated with the increased expression of NR2A in the *** study was approved by the Animal Ethics Committee of North China University of Science and Technology,China(approval ***2018155)on December 21,2018.

关键词： D-serine hippocampus lead neurological function N-methyl-D-aspartate poisoning protection repair

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Local environment regulation of transition metal dichalcogenide-based single-atom catalysts

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Rare Metals 2024年第9期43卷 4019-4037页

作者： Ming-Hui li Jing li Xiao-Yu zheng yao Zhou Advanced Research Institute of Multidisciplinary Science andSchool of Chemistry and Chemical Engineering Beijing Institute of Technology Laser Micro/Nano Fabrication Laboratory School of Mechanical Engineering Beijing Institute of Technology

Single-atom catalysts have risen significant attention in the realm of green electrocatalytic energy conversion to address energy and environmental sustainability challenges. Transition metal dichalcogenide（TMD）-based single-atom catalysts are considered highly effective in electrocatalysis due to the TMDs' notable specific surface area, tunable elemental species and efficient utilization of single atoms. In order to enhance electrocatalytic performance, it is imperative to elaborately engineer the local environment surrounding the active sites of single atoms within TMDs. In this review, we initially explore the effects of synthesis methods on single-atom active sites and the influence of loading of single atoms on catalytic performance for TMDs. The modulation strategies of the local environment surrounding single-atom sites in TMDs are elaborated, including substitution engineering,surface adsorption, vacancies, spatial confinement and dual-atom site strategies. For each modulation strategy, the effects of diverse local environments on various electrocatalytic applications are presented, such as the oxygen evolution reaction, oxygen reduction reaction, nitrogen reduction reaction, CO2reduction reaction and CO oxidation. Ultimately, this study presents a comprehensive overview of the challenges encountered and the potential directions for the advancement of single-atom catalysts based on TMDs in the realm of electrocatalysis.

关键词： Electrocatalysis

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Hepatocyte-specific deletion of Mettl3 promotes hepatocellular carcinoma in mice

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Genes & Diseases 2024年第1期11卷 57-59页

作者： Chunhong liu Xinzhi li Zhicheng yao Xueying li zheng Chen HIT Center for life Sciences School of Life Science and TechnologyHarbin Institute of TechnologyHarbinHeilongjiang150001China Department of General Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong 510530China

Hepatocellular carcinoma(HcC)is a key cause of morbidity and mortality,which is a global health *** the molecular and cellular mechanisms of HcC progression is helpful to find either early markers for diagnosis or nov... 详细信息

关键词： diagnosis mortality carcinoma

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Steady-state Voltage Security-constrained Optimal Frequency Control for Weak HVDC Sending-end AC Power Systems

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 658-669页

作者： Qiangqiang Wang liangzhong yao Jian Xu Yuping zheng Wei li Wei Wang School of Electrical Engineering and Automation Wuhan UniversityWuhan 430072China Hubei Engineering and Technology Research Center for AC/DC Intelligent Distribution Network(Wuhan University) Wuhan 430072China State Key Laboratory of Smart Grid Protection and Control NARI Group Corporation(State Grid Electric Power Research Institute)Nanjing 211106China

Due to the fact that a high share of renewable energy sources(RESs)are connected to high-voltage direct current(HVDC)sending-end AC power systems,the voltage and frequency regulation capabilities of HVDC sending-end AC power systems have *** has resulted in potential system operating problems such as overvoltage and overfrequency,which occur simultaneously when block faults exist in the HVDC *** this study,a steady-state voltage security-constrained optimal frequency control method for weak HVDC sending-end AC power systems is *** integrated virtual inertia control of RESs is employed for system frequency *** dynamic reactive power compensation devices are utilized to control the voltage of all nodes meet voltage security ***,an optimization model that simultaneously considers the frequency and steady-state voltage security constraints for weak HVDC sending-end AC power systems is *** optimal control scheme with the minimum total cost of generation tripping and additional dynamic reactive power compensation required is obtained through the optimization *** are conducted on a modified IEEE 9-bus test system and practical Qing-Yu line commutated converter based HVDC(LCC-HVDC)sending-end AC power system to verify the effectiveness of the proposed method.

关键词： Renewable energy source(RES) high-voltage direct current(HVDC) AC power system optimal frequency control steady-state voltage security dynamic reactive power compensation

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Dynamic Expression Profiles of Marker Genes in Osteogenic Differentiation of Human Bone Marrow-derived Mesenchymal Stem Cells

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Chinese Medical Sciences Journal 2015年第2期30卷 108-113页

作者： liang Wang zheng-yao li Yi-peng Wang Zhi-hong Wu Bin Yu Department of Orthopedic Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences & Peking Union Medical College

Objective To observe the expression profiles of osteoblast-related genes in human mesenchymal stem cells(MSCs) derived from bone marrow during osteogenic differentiation. Methods MSCs were induced to differentiate with MSC osteogenic differentiation medium for 7, 14, 21 and 28 days respectively. Alizarin Red staining was used to detect matrix mineralization. Expression of osteoblast-related genes, including osteocalcin, osteopontin, Runt-related transcription factor 2(Runx2), alkaline phosphatase and collagen type Ⅰ, was assessed with quantitative reverse transcription-polymerase chain reaction. Results On day 14 after induction of differentiation, cells were stained positively with Alizarin Red. The expression levels of these genes exhibited an upward trend as induction time was prolonged. Exposure to osteogenic differentiation medium less than 21 days did not significantly induce osteocalcin expression; osteocalcin expression levels in the differentiated cells induced for 21 and 28 days were 1.63 and 2.46 times as high as the undifferentiated cells respectively(all Pline phosphatase and collagen type Ⅰgenes(all P<0.05). Their expressions reached the peak levels on day 21, which were increased more than 4- and 3-fold respectively. Conclusion Human bone marrow-derived MSCs could exhibit the sequential expression pattern of osteoblast marker genes during osteogenic differentiation in vitro.

关键词： mesenchymal stem cell gene expression osteogenesis osteoblast differentiation

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Mitochondrial dysfunction:mechanisms and advances in therapy

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2362-2390页

作者： yao Zong Hao li Peng liao Long Chen yao Pan Yongqiang zheng Changqing Zhang Delin liu Minghao zheng Junjie Gao Centre for Orthopaedic Research Medical SchoolThe University of Western AustraliaNedlandsWA 6009Australia Department of Orthopaedics Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200233China Institute of Microsurgery on Extremities and Department of Orthopedic SurgeryShanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200233China State Key Laboratory of Cell Biology Shanghai Institute of Biochemistry and Cell BiologyCAS Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai 200031China Sixth People’s Hospital Fujian No.16Luoshan SectionJinguang RoadLuoshan StreetJinjiang CityQuanzhouFujianChina

Mitochondria,with their intricate networks of functions and information processing,are pivotal in both health regulation and disease ***,mitochondrial dysfunctions are identified in many common pathologies,including cardiovascular diseases,neurodegeneration,metabolic syndrome,and ***,the multifaceted nature and elusive phenotypic threshold of mitochondrial dysfunction complicate our understanding of their contributions to ***,these complexities do not prevent mitochondria from being among the most important therapeutic *** recent years,strategies targeting mitochondrial dysfunction have continuously emerged and transitioned to clinical *** intervention such as using healthy mitochondria to replenish or replace damaged mitochondria,has shown promise in preclinical trials of various *** components,including mtDNA,mitochondria-located microRNA,and associated proteins can be potential therapeutic agents to augment mitochondrial function in immunometabolic diseases and tissue ***,we review current knowledge of mitochondrial pathophysiology in concrete examples of common *** also summarize current strategies to treat mitochondrial dysfunction from the perspective of dietary supplements and targeted therapies,as well as the clinical translational situation of related pharmacology ***,this review discusses the innovations and potential applications of mitochondrial transplantation as an advanced and promising treatment.

关键词： dysfunction injuries replace

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