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Biphase-to-monophase structure evolution of Na_(0.766+x)Li_(x)Ni_(0.33-x)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) toward ultradurable Na-ion batteries

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Carbon Energy 2024年第9期6卷 66-79页

作者： Mengting Liu Zhiwei Cheng Xu Zhu Haojie Dong Tianran Yan Liang Zhang Lu Zheng Hu-Rong Yao xian-zuo wang Lianzheng Yu Bing Xiao Yao Xiao Peng-Fei wang State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringCenter of Nanomaterials for Renewable EnergyXi'an Jiaotong UniversityXi'anShaanxiChina Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Institute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhouJiangsuChina Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and EnergyFujian Normal UniversityFuzhouFujianChina Wenzhou Key Laboratory of Sodium-Ion Batteries Institute for Carbon NeutralizationWenzhou University Technology InnovationWenzhouZhejiangChina

Layered composite oxide materials with O3/P2 biphasic crystallographic structure typically demonstrate a combination of high capacities of the O3 phase and high operation voltages of the P2 ***,their practical applications are seriously obstructed by difficulties in thermodynamic phase regulation,complicated electrochemical phase transition,and unsatisfactory cycling ***,we propose an efficient structural evolution strategy from biphase to monophase of Na_(0.766+x)Li_(x)Ni_(0.33-x)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) through Li+*** role of Li+substitution not only simplifies the unfavorable phase transition by altering the local coordination of transition metal(TM)cations but also stabilizes the cathode–electrolyte interphase to prevent the degradation of TM cations during battery *** a result,the thermodynamically robust O_(3)-Na_(0.826)Li_(0.06)Ni_(0.27)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) cathode delivers a high capacity of 139.4 mAh g^(-1) at 0.1 C and shows prolonged cycling life at high rates,with capacity retention of 81.6%at 5 C over 500 *** work establishes a solid relationship between the thermodynamic structure evolution and electrochemistry of layered cathode materials,contributing to the development of long-life sodium-ion batteries.

关键词： electrochemistry Li+substitution Na-ion batteries O_(3)phase phase transition

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Highly efficient catalyst for 1,1,2-trichloroethane dehydrochlorination via BN_(3) frustrated Lewis acid-base pairs

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Nano Research 2024年第6期17卷 4773-4781页

作者： Yuxue Yue Fangmin zuo Bolin wang Xiaoling xian Jun Tang Haifeng Zhang Zilong Zhang Qingping Ke Wei Chen School of Chemical Engineering Northeast Electric Power UniversityJilin 132012China Industrial Catalysis Institute of Zhejiang University of Technology Hangzhou 310014China Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China College of Chemistry and Chemical Engineering Anhui University of TechnologyMaanshan 243002China

In this study,a novel non-metallic carbon-based catalyst co-doped with boron and nitrogen(B,N)was successfully *** precisely controlling the carbonization temperature of a binary mixed ionic liquid,we selectively modified the doping site structure,ultimately constructing a B,N co-doped frustrated Lewis acid-base pair *** catalyst exhibited remarkable catalytic activity,selectivity,and stability in the dehydrochlorination reaction of 1,1,2-trichloroethane(TCE).Detailed characterization and theoretical calculations revealed that the primary active center of this catalyst was the BN_(3)*** to conventional graphitic N structures,the BN_(3)structure had a higher p-band center,ensuring superior adsorption and activation capabilities for TCE during the *** the BN_(3)site,three negatively charged nitrogen atoms acted as Lewis bases,while positively charged boron atoms acted as Lewis *** synergistic interaction facilitated the specific dissociation of chlorine and hydrogen atoms from TCE,significantly enhancing the 1,1-dichloroethene *** this research,we not only explored the active site structure and catalytic mechanism of B,N co-doped catalysts in depth but also provided an efficient,selective,and stable catalyst for the dehydrochlorination of TCE,contributing significantly to the development of non-metallic catalysts.

关键词： B N co-doped sites dehydrochlorination frustrated Lewis acid-base pairs catalytic mechanism

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Plasmon-enhanced ultra-high photoresponse of single-wall carbon nanotube/copper/silicon near-infrared photodetectors

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Nano Research 2024年第7期17卷 5930-5936页

作者： Yi-Ming Zhao xian-Gang Hu Chao Chen zuo-Hua wang An-Ping Wu Hong-wang Zhang Peng-xiang Hou Chang Liu Hui-Ming Cheng Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Single wall carbon nanotube(SWCNT)/Si heterojunction photodetectors have the advantages of high photoresponse ability and simple structure,however,their detection wavelength range are usually lower than 1100 nm,which limits their application in the infrared *** report a SWCNT/Cu/Si photodetector with both a high photoresponse and a detection range up to the infrared band by depositing a Cu nanoparticles(NPs)layer between a SWCNT film and a n-Si *** was found that the Cu NPs produce strong surface plasmon resonance(SPR)under laser irradiation,which breaks through the limitation of Si band gap and greatly improves the photoresponse of the SWCNT/Cu/Si photodetector in the near infrared *** responsivity(R)of the photodetector in the wavelength range of 1850–1200 nm reached 2.2–14.15 mA/W,which is the highest value in the reported plasmon enhanced n-Si based photodetectors,and about 20,000 times higher than that of a SWCNT/Si *** R value for 1550 nm wavelength used in optical communications reached~8.2 mA/W,which is 64%higher than the previously reported values of commonly used *** attribute the significant increase to the strong SPR and low Schottky barrier of Cu with n-Si,which facilitates the generation and transfer of the carriers.

关键词： single wall carbon nanotube photodetector silicon surface plasmon resonance copper

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Progress and prospects of pH-neutral aqueous organic redox flow batteries:Electrolytes and membranes

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Journal of Energy Chemistry 2024年第9期96卷 89-109页

作者： Kang Peng Gonggen Tang Chao Zhang xian Yang Peipei zuo Zhanfeng xiang Zhong Yao Zhengjin Yang Tongwen Xu Key Laboratory of Precision and Intelligent Chemistry Department of Applied ChemistrySchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026AnhuiChina Suqian Time Energy Storage Technology Co. Ltd.Suqian 223800JiangsuChina

Aqueous organic redox flow batteries(AORFBs),which exploit the reversible electrochemical reactions of water-soluble organic electrolytes to store electricity,have emerged as an efficient electrochemical energy storage technology for the grid-scale integration of renewable ***-neutral AORFBs that feature high safety,low corrosivity,and environmental benignity are particularly promising,and their battery performance is significantly impacted by redox-active molecules and ion-exchange membranes(IEMs).Here,representative anolytes and catholytes engineered for use in pH-neutral AORFBs are outlined and summarized,as well as their side reactions that cause irreversible battery capacity *** addition,the recent achievements of IEMs for pH-neutral AORFBs are discussed,with a focus on the construction and tuning of ion transport ***,the critical challenges and potential research opportunities for developing practically relevant pH-neutral AORFBs are presented.

关键词： Aqueous organic redox flow battery pH-Neutral Anolyte Catholyte Membrane

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Association of Serum Folate and Vitamin B_(12) Concentrations with Obesity in Chinese Children and Adolescents

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Biomedical and Environmental Sciences 2024年第3期37卷 242-253页

作者： ZHU Qian Rang KOK E Dieuwertje BEKELE Hailu Tesfaye MANUSAMA Koen ZHANG Jing xian XIE Wei ZONG Wen Qi zuo Hui ZHANG Jian KAMPMAN Ellen DAI Yue Jiangsu Provincial Center for Disease Control and Prevention Nanjing 210009JiangsuChina Division of Human Nutrition and Health Wageningen University&ResearchWageningen 176700 AAThe Netherlands School of Public Health Medical College of Soochow UniversitySuzhou 215123JiangsuChina National Institute for Nutrition and Health Chinese Center for Disease Control and PreventionBeijing 100050China

Objective This study aimed to evaluate the associations of serum folate and/or vitamin B12 concentrations with obesity among Chinese children and *** A cross-sectional study was conducted including 3,079 Chinese children and adolescents,aged 6 to 17 years,from Jiangsu,*** indices,such as,children's body mass index(BMI),BMI z-scores,waist circumference,and waist-to-height ratio were *** linear regression and generalized additive models were used to investigate the associations of serum folate and vitamin B12 levels with anthropometric indices and odds of *** We observed that serum vitamin B12 concentrations were inversely associated with all anthropometric indices and the odds of general obesity[odds ratio(OR)=0.68;95%confidence interval(CI)=0.59,0.78]and abdominal obesity(OR=0.68;95%CI=0.60,0.77).When compared to participants with both serum vitamin levels in the two middle quartiles,those with both serum folate and vitamin B12 levels in the highest quartile were less prone to general(OR=0.31,95%CI=0.19,0.50)or abdominal obesity(OR=0.46,95%CI=0.31,0.67).Conversely,participants with vitamin B12 levels in the lowest quartile alongside folate levels in the highest quartile had higher odds of abdominal obesity(OR=2.06,95%CI=1.09,3.91).Conclusion Higher serum vitamin B12 concentrations,but not serum folate concentrations,were associated with lower odds of childhood *** and adolescents with high levels of vitamin B12 and folate were less likely to be obese.

关键词： Folate Vitamin B12 Childhood obesity Micronutrient

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FDX1 as a novel biomarker and treatment target for stomach adenocarcinoma

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1803-1824页

作者： xian-Ze Xie Lei zuo Wei Huang Qiao-Mei Fan Ya-Yun Weng Wen-Dong Yao Jia-Li Jiang Jia-Qi Jin Department of Pharmacy The First Affiliated Hospital of Zhejiang Chinese Medical University(Zhejiang Provincial Hospital of Chinese Medicine)Hangzhou 310018Zhejiang ProvinceChina Anhui Province Huainan City Shou County Agricultural Machinery Affairs Management Center Huainan 232200Anhui ProvinceChina

BACKGROUND Stomach adenocarcinoma(STAD)is one of the main reasons for cancer-related deaths *** investigation aimed to define the connection between STAD and Cuproptosis-related genes(CRGs).Cuproptosis is a newly identified form of mitochondrial cell death triggered by *** To explore the identification of potential biomarkers for STAD disease based on *** A predictive model using Gene Ontology(GO),Least Absolute Shrinkage and Selection Operator(LASSO),Kyoto Encyclopedia of Genes and Genomes(KEGG),Gene Set Variation Analysis(GSVA),and Gene Set Enrichment Analysis analyzed gene interconnections,focusing on 3 copper-related genes and their expression in The Cancer Genome *** for mRNA-miRNA and mRNA-transcription factor interactions were *** prognostic significance of CRG scores was evaluated using time-receiver operating characteristic,Kaplan-Meier curves,and COX regression *** was conducted with datasets GSE26942,GSE54129,and *** of copper-related differ-entially expressed genes was also analyzed in various human tissues and gastric cancer subpopulations using the human protein *** Three significant genes(FDX1,LIAS,MTF1)were identified and selected via LASSO analysis to predict and classify individuals with STAD into high and low CRG score *** genes were down-regulated in both risk *** and KEGG analyses highlighted their involvement mainly in the electron transport *** validating their differential expression,FDX1 emerged as the most accurate diagnostic marker for gastric ***,the RCircos package localized FDX1 on chromosome *** Our study revealed that FDX1 could be a potential biomarker and treatment target for gastric malignancy,providing new ideas for further scientific research.

关键词： Stomach adenocarcinoma disease Copper death FDX1 prognostic biomarkers Cuproptosis-related genes

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作业疗法联合rTMS对脊髓损伤伴胃肠功能失调的干预研究

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世界华人消化杂志 2024年第1期32卷 50-57页

作者：韩作献徐婷汪加胜浙江中医药大学附属金华中医院康复治疗部浙江省金华市321000

背景脊髓损伤伴胃肠功能紊乱的治疗方法对于神经功能的恢复并不十分理想.观察作业疗法联合重复经颅磁刺激有望相互弥补,发挥各自优势,提高患者的康复的质量.目的观察作业疗法联合重复经颅磁刺激(repetitive transcranial magnetic stimu... 详细信息

背景脊髓损伤伴胃肠功能紊乱的治疗方法对于神经功能的恢复并不十分理想.观察作业疗法联合重复经颅磁刺激有望相互弥补,发挥各自优势,提高患者的康复的质量.目的观察作业疗法联合重复经颅磁刺激(repetitive transcranial magnetic stimulation,rTMS)在脊髓损伤(spinal cord injury,SCI)伴胃肠功能失调患者中的应用效果.方法通过随机数字表法将2020-06/2023-03间符合选例标准的150例SCI伴胃肠功能失调患者分成3组,每组50例.对照1组采取作业疗法,对照2组采取rTMS治疗,观察组采取作业治疗联合rTMS治疗,治疗3个疗程.观察患者疗效、治疗前后神经电生理[胫神经体感诱发电位(SEP)、运动诱发电位(MEP)]、外周血细胞因子[白介素-1β(interleukin-1β,IL-1β)、白介素-6(interleukin-6,IL-6)、转化生长因子β1(transforming growth factor-β1,TGF-β1)]、下肢关键肌群肌力积分、肠道功能[神经源性肠道功能障碍(neurogenic bowel dysfunction,NBD)、Cleveland失禁评分系统、Wexner便秘评分、布里斯托尔(Bristol)大便分级]、肢体功能恢复指标[Barthel指数(Barthel Index,BI)、功能独立性测量(Functional Independence Measure,FIM)、Berg平衡量表(Berg Balance Scale,BBS)].结果观察组总有效率94.00%高于对照1、2组74.00%、80.00%(P对照2组>对照1组(P对照2组>对照1组(P对照1、2组(P<0.05).结论与单一康复疗法相比,rTMS联合作业疗法可降低免疫炎症反应,改善SCI伴胃肠功能失调患者受损的肢体运动及肠道功能,有助于其更好地回归家庭与社会.

关键词：脊髓损伤重复经颅磁刺激疗效功能恢复

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聚氨酯封孔材料在炮孔封堵中的应用探索

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爆破 2018年第1期35卷 142-146页

作者：陆丽园王晓云赵显莹王作鹏中煤科工集团淮北爆破技术研究院有限公司淮北235039

为探索聚氨酯封孔材料在炮孔封堵中的应用可行性,通过理论分析炮孔中封堵物的受力情况,对聚氨酯封孔材料的力学性能与安全性能进行了试验研究。实验测试了聚氨酯封孔材料的抗压强度、相对形变以及弹性模量,并采用拉拔法与推出法测试了... 详细信息

为探索聚氨酯封孔材料在炮孔封堵中的应用可行性,通过理论分析炮孔中封堵物的受力情况,对聚氨酯封孔材料的力学性能与安全性能进行了试验研究。实验测试了聚氨酯封孔材料的抗压强度、相对形变以及弹性模量,并采用拉拔法与推出法测试了聚氨酯材料的粘结力。结果显示:聚氨酯封孔材料的平均抗压强度为776.2 k Pa,压缩变形为10%,弹性模量均值为16.66 MPa;拉拔法测得的聚氨酯封孔材料的粘结力为1788 N,粘土的粘结力为835 N;推出法测得的聚氨酯封孔材料的最大推出力为952 N,粘结强度为103.8 k Pa,粘土的最大推出力为692 N,粘结强度为75.5 k Pa。显然,聚氨酯封孔材料的粘结力显著优于粘土,力学性能较好。鉴于聚氨酯材料的发热性,测定了聚氨酯发泡过程的放热性及其对塑料导爆管传爆可靠性的影响。结果显示:聚氨酯封孔材料在反应过程中温度较高,且受用量、环境温度等的影响,存在一定的危险性。

关键词：聚氨酯封孔材料炮孔封堵应用可行性力学性能安全性

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优化我国能源结构的思考

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天然气技术 2009年第2期3卷 6-8页

作者：罗佐县汪如朗中国石化石油勘探开发研究院北京100083 中国石油大学(北京)工商管理学院北京102249

长期以来煤炭一直是我国主要的消费能源,以煤为主的能源结构在为社会发展作出贡献的同时也带来系列负面效应。加快能源结构调整,发展新能源和油气产业是我国今后能源产业调整的重要方向。新能源产业虽具有良好的发展前景,但目前面临技... 详细信息

长期以来煤炭一直是我国主要的消费能源,以煤为主的能源结构在为社会发展作出贡献的同时也带来系列负面效应。加快能源结构调整,发展新能源和油气产业是我国今后能源产业调整的重要方向。新能源产业虽具有良好的发展前景,但目前面临技术、成本、体制等因素的制约,现阶段大力发展油气产业具有现实性。推广洁净煤应用技术,以油气产业发展为重点,适度提速新能源产业是我国能源结构优化的必由之路。

关键词：能源结构煤炭结构效应新能源油气产业

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移动性感知下基于负载均衡的任务迁移方案

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电讯技术 2024年第3期64卷 333-342页

作者：鲜永菊韩瑞寅左维昊汪帅鸽重庆邮电大学通信与信息工程学院重庆400065

针对移动边缘计算中用户移动性导致服务器间负载分布不均,用户服务质量(Quality of Service,QoS)下降的问题,提出了一种移动性感知下的分布式任务迁移方案。首先,以优化网络中性能最差的用户QoS为目标,建立了一个长期极大极小化公平性问... 详细信息

针对移动边缘计算中用户移动性导致服务器间负载分布不均,用户服务质量(Quality of Service,QoS)下降的问题,提出了一种移动性感知下的分布式任务迁移方案。首先,以优化网络中性能最差的用户QoS为目标,建立了一个长期极大极小化公平性问题(Max Min Fairness,MMF),利用李雅普诺夫(Lyapunov)优化将原问题转化解耦。然后,将其建模为去中心化部分可观测马尔可夫决策过程(Decentralized Partially Observable Markov Decision Process,Dec-POMDP),提出一种基于多智能体柔性演员-评论家(Soft Actor-Critic,SAC)的分布式任务迁移算法,将奖励函数解耦为节点奖励和用户个体奖励,分别基于节点负载均衡度和用户QoS施加奖励。仿真结果表明,相比于现有任务迁移方案,所提算法能够在保证用户QoS的前提下降低任务迁移率,保证系统负载均衡。

关键词：移动边缘计算(MEC) 移动性感知任务迁移多智能体强化学习(MARL)

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