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Advances in component and operation optimization of solid oxide electrolysis cell

Chinese Chemical Letters 2023年第5期34卷 155-164页

作者： Xiaoxin Zhang Bo liu Yanling Yang jianhui li jian li Yingru Zhao lichao jia Yifei Sun College of Energy Xiamen UniversityXiamen 361102China School of Materials Science and Engineering State Key Lab of Materials Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan 430074China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China National Engineering Laboratory for Green Chemical Productions of Alcohols Ethers and EstersCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Shenzhen Research Institute of Xiamen University Shenzhen 518057China

Considering the earth powered by intermittent renewable energy in the coming future,solid oxide electrolysis cell(SOEC)will play an indispensable role in efficient energy conversion and storage on *** thermolytic and kinetic merits grant SOEC a bright potential to be directly integrated with electrical grid and downstream chemical synthesis ***,the scientific community are still endeavoring to pursue the SOEC assembled with better materials and operated at a more energy-efficient *** this review article,at cell level,we focus on the recent development of electrolyte,cathode,anode and buffer layer materials for both steam and CO_(2)*** the other hand,we also discuss the next generation SOEC operated with the assistant of other fuels to further reduce the energy consumption and enhance the productivity of the *** stack level,the sealant,interconnect and stack operation strategies are collectively ***,the challenges and future research direction in SOECs are included.

关键词： Solid oxide electrolysis cell Fuel assistant Stack Operation condition Anode Cathode

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Channel Capacity and Power Allocation of MIMO Visible light Communication System

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China Communications 2023年第2期20卷 122-138页

作者： Shuai Ma Ruixin Yang Guanjie Zhang Hang li Wen Cao linqiong jia Yanyu Zhang Shiyin li Peng Cheng Laboratory Shenzhen 518055China School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China Shenzhen Research Institute of Big Data Shenzhen 518172China School of Electronics and Control Engineering Chang’an UniversityXi’an 710064China School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjing 210094China National Digital Switching System Engineering&Technological Research Center Zhengzhou 450000China

In this paper,the channel capacity of the multiple-input multiple-output(MIMO)visible light communication(VLC)system is investigated under the peak,average optical and electrical power *** the channel capacity of MIMO VLC is shown to be a mixed integer programming *** address this open problem,we propose an inexact gradient projection method to find the channel capacity-achieving discrete input distribution and the channel capacity of MIMO *** we derive both upper and lower bounds of the capacity of MIMO VLC with the closed-form ***,by considering practical discrete constellation inputs,we develop the optimal power allocation scheme to maximize transmission rate of MIMO VLC *** results show that more discrete points are needed to achieve the channel capacity as SNR *** the upper and lower bounds of channel capacity are tight at low SNR *** addition,comparing the equal power allocation,the proposed power allocation scheme can significantly increase the rate for the low-order modulation inputs.

关键词： visible light communication MIMO discrete constellation inputs power allocation

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Fe_(2)O_(3)-decorated boron/nitrogen-co-doped carbon nanosheets as an electrochemical sensing platform for ultrasensitive determination of paraquat in natural water

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Chinese Chemical Letters 2023年第1期34卷 446-451页

作者： Meng li Xinzhong Wang Yelin Zhu Xiuxiu jia Shusheng Zhang Huaisheng Wang Yongtao li Guangzhi Hu School of Electronic Communication Technology Shenzhen Institute of Information TechnologyShenzhen 518172China College of Chemistry Zhengzhou UniversityZhengzhou 450000China Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504China School of Materials Science and Engineering Liaocheng UniversityLiaocheng 252000China Joint Institute for Environmental Research and Education College of resources and environmentSouth China Agricultural UniversityGuangzhou 510642China

Boron/nitrogen-co-doped carbon(BCN)nanosheets decorated with Fe_(2)O_(3) nanocrystals(Fe_(2)O_(3)–BCN)were cast on a glassy carbon electrode(GCE)and applied as an electrochemical sensor to effectively detect paraquat(PQ),a toxic herbicide,in aqueous environments.A linear experiment performed using square wave voltammetry(SWV)under optimized experimental conditions produced a decent linear relationship and a low detection limit(LOD)of 2.74 nmol/L(S/N=3).Repeatability,reproducibility,stability,and interference experiments confirmed that the Fe_(2)O_(3)–BCN/GCE system exhibited decent electrochemical sensing performance for PQ ***,the designed sensor showed high selectivity and a decent linear relationship with PQ concentration in natural water *** the best of our knowledge,this is the first study on the preparation of Fe_(2)O_(3)–BCN nanosheets for PQ *** proposed sensor can be employed as an effective alternative tool for distinguishing and processing PQ.

关键词： Paraquat Fe_(2)O_(3)-BCN Electrochemical sensor Contaminant detection

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丹篓片联合阿托伐他汀钙片对痰瘀互结证稳定性心绞痛患者的临床疗效

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中成药 2024年第4期46卷 1168-1172页

作者：王梦豪张晓丹杨慰余思思蔡艳李家英上海中医药大学附属第七人民医院传统医学示范中心上海200137

目的考察丹篓片联合阿托伐他汀钙片对痰瘀互结证稳定性心绞痛患者的临床疗效。方法 80例患者随机分为对照组和观察组,每组40例,对照组给予阿托伐他汀钙片,观察组在对照组基础上加用丹篓片,疗程8周。检测临床疗效、中医证候评分、血管... 详细信息

目的考察丹篓片联合阿托伐他汀钙片对痰瘀互结证稳定性心绞痛患者的临床疗效。方法 80例患者随机分为对照组和观察组,每组40例,对照组给予阿托伐他汀钙片,观察组在对照组基础上加用丹篓片,疗程8周。检测临床疗效、中医证候评分、血管内皮功能指标(NO、VEGF、ET-1)、血脂相关指标(TC、TG、HDL-C、LDL-C、脂蛋白a、ApoB/A1)、24 h动态心电图指标(缺血发作次数、最长持续时间、心脏缺血总负荷)、SAQ评分、安全性指标(AST、ALT、Scr、BUN)变化。结果观察组总有效率高于对照组(P0.05)。结论丹篓片联合阿托伐他汀钙片可安全有效地改善痰瘀互结证稳定性心绞痛患者心肌缺血程度、临床症状,调节血脂,减轻血管内皮损伤。

关键词：丹篓片阿托伐他汀钙片稳定性心绞痛痰瘀互结

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A molecular brake that modulates spliceosome pausing at detained introns contributes to neurodegeneration

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Protein & Cell 2023年第5期14卷 318-336页

作者： Dawei Meng Qian Zheng Xue Zhang Xuejiao Piao li Luo Yichang jia Tsinghua-Peking Joint Center for life Sciences Tsinghua UniversityBeijing 100084China School of life Sciences Tsinghua UniversityBeijing 100084China School of Medicine Tsinghua UniversityBeijing 100084China IDG/McGovern Institute for Brain Research Tsinghua UniversityBeijing 100084China Tsinghua Laboratory of Brain and Intelligence Tsinghua UniversityBeijing 100084China

Emerging evidence suggests that intron-detaining transcripts(IDTs)are a nucleus-detained and polyadenylated mRNA pool for cell to quickly and effectively respond to environmental stimuli and ***,the underlying mechanisms of detained intron(DI)splicing are still largely ***,we suggest that post-transcriptional DI splicing is paused at the Bact state,an active spliceosome but not catalytically primed,which depends on Smad Nuclear Interacting Protein 1(SNIP1)and RNPS1(a serine-rich RNA binding protein)***1 and Bact components preferentially dock at DIs and the RNPS1 docking is sufficient to trigger spliceosome *** of Snip1 attenuates neurodegeneration and globally rescues IDT accumulation caused by a previously reported mutant U2 snRNA,a basal spliceosomal ***1 conditional knockout in the cerebellum decreases DI splicing efficiency and causes ***,we suggest that SNIP1 and RNPS1 form a molecular brake to promote spliceosome pausing,and that its misregulation contributes to neurodegeneration.

关键词： SNIP1 RNPS1 spliceosome detained intron neurodegeneration

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基于“肾脑相济”理论探讨艾灸对阿尔茨海默病大鼠海马AMPK/mTOR信号通路的影响

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安徽中医药大学学报 2024年第3期43卷 42-47页

作者：王琳朱才丰王丽贾玉梅安徽中医药大学第二附属医院安徽合肥230061 安徽中医药大学研究生院安徽合肥230012

目的观察艾灸对阿尔茨海默病(Alzheimer’s disease,AD)大鼠腺苷酸活化蛋白激酶(adenosine 5-monophosphate activated protein kinase,AMPK)/雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路相关递质表达的影响,探讨艾灸治疗AD的作用机制。方法将SD大鼠按照随机数字表法分为正常组8只、模型组32只,采取侧脑室注射β淀粉样蛋白(amyloidβ-protein,Aβ)_(25-35)的方法建立大鼠AD模型。将模型复制成功的大鼠随机分为模型组、药物组、艾灸组,每组8只。艾灸组大鼠用艾条灸“百会”“肾俞”“三阴交”,每次15 min,同时按3 mg/kg灌胃蒸馏水;药物组大鼠按3 mg/kg灌胃盐酸多奈哌齐;对照组及模型组大鼠按3 mg/kg灌胃蒸馏水。采用Morris水迷宫法检测大鼠行为学表现,苏木精—伊红染色法观察大鼠海马病理组织改变,Western blot法检测大鼠海马磷酸化雷帕霉素靶蛋白(phosphorylated mammalian target of rapamycin,p-mTOR)、核糖体蛋白S6激酶(ribosomal protein S6 kinase p70,P70S6K)、自噬相关基因5(autophagy-related gene 5,ATG5)、磷酸化腺苷酸活化蛋白激酶(phosphorylated adenosine 5-monophosphate activated protein kinase,p-AMPK)、微管相关蛋白1轻链3B(microtubule associated protein light chain 3B,LC3B)-Ⅱ/LC3B-Ⅰ的表达水平。结果苏木精—伊红染色结果表明,模型组海马神经元萎缩明显,与模型组比较,药物组和艾灸组海马神经元形态及分化程度均有明显改善。与正常组比较,模型组大鼠的逃避潜伏期显著延长(P<0.05),p-mTOR及P70S6K表达水平均显著升高(P<0.05),ATG5、LC3B-Ⅱ/LC3B-Ⅰ、p-AMPK表达水平均显著降低(P<0.05)。与模型组比较,药物组和艾灸组大鼠的逃避潜伏期均显著缩短(P<0.05),p-mTOR及P70S6K表达水平均显著下降(P<0.05),ATG5、LC3B-Ⅱ/LC3B-Ⅰ、p-AMPK表达水平均显著上升(P<0.05)。与药物组比较,艾灸组大鼠逃避潜伏期显著缩短(P<0.05);p-mTOR及P70S6K表达水平显著降低(P<0.05),ATG5、LC3B-Ⅱ/LC3B-Ⅰ、p-AMPK表达水平均显著上升(P<0.05)。结论艾灸能够调控AMPK/mTOR信号通路,诱导细胞自噬,阻断脑内Aβ表达,从而改善认知功能。

关键词：阿尔茨海默病艾灸自噬海马腺苷酸活化蛋白激酶雷帕霉素靶蛋白

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基于meta分析的高原湖泊典型新污染物赋存特征及风险评估

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玉溪师范学院学报 2024年第3期40卷 33-42页

作者：赵斌卢少勇周志明李嘉冯传平玉溪师范学院化学生物与环境学院云南玉溪653100 中国地质大学水资源与环境学院北京100080 中国环境科学研究院环境基准与风险评估国家重点实验室国家环境保护湖泊工程技术中心北京100020 云南滇清环境科技有限公司云南玉溪653100

人类活动强度及新污染物长期且持续输入,给高原湖泊生态环境带来巨大压力.以web ofscience数据库获取中国高原湖泊典型新污染物浓度数据,通过系统的回顾元分析,旨在评价高原湖泊中新污染物的赋存特征及相关生态风险.筛选web of science... 详细信息

人类活动强度及新污染物长期且持续输入,给高原湖泊生态环境带来巨大压力.以web ofscience数据库获取中国高原湖泊典型新污染物浓度数据,通过系统的回顾元分析,旨在评价高原湖泊中新污染物的赋存特征及相关生态风险.筛选web of science数据库检索从2009年至2022年间的文章,包括青藏高原、黄土高原、云贵高原和内蒙古高原的23个湖泊.通过中国高原湖泊典型新污染物的赋存、分布和健康风险,深入了解高原湖泊中新污染物的潜在污染源.

关键词：高原湖泊新污染物 meta分析风险评估

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Cadmium sulfide as bifunctional mimics of NADH oxidase and cytochrome c reductase takes effect at physiological pH

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Nano Research 2022年第6期15卷 5256-5272页

作者： Hao Wang Jinxing Chen Qing Dong Xiuna jia Dan li Jin Wang Erkang Wang College of Chemistry Jilin UniversityChangchun 130012China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Department of Chemistry and Physics State University of New York at Stony Brook Stony BrookNY 11794-3400USA

Recently,a study of mimic enzyme has received more ***,the investigation on the oxidoreductase activity of electron mediators in the biological respiratory chain is still ***,we found that cadmium sulfide(CdS)nanorods can catalyze the formation of superoxide *** to the role of the photo-generated holes and the nicotinamide adenine dinucleotide(NADH)oxidation promoted by superoxide anion(O_(2)^(•−)),the CdS exhibits NADH oxidase-like activity and can be coupled with dehydrogenase to realize the recycling of *** is worth mentioning that the bio-electron acceptor,cytochrome c(Cyt c),as a chromogenic substrate,can accept electrons transferred from O_(2)^(•−),which demonstrates the Cyt c reductase-like activity of CdS under physiological pH *** different substrates,O_(2)^(•−)induced from CdS show oxidizing capacity for NADH and reducing capacity for Cyt c,which provides a new perspective for the in-depth study of new nanozyme.

关键词： cytochrome c reductase nicotinamide adenine dinucleotide(NADH)oxidase superoxide anions enzyme mimic cadmium sulfide

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分期针刺结合中药治疗中风后吞咽功能障碍的临床研究

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系统医学 2024年第4期9卷 14-17,22页

作者：李媛媛贾仰春史雨露丰县中医医院针灸科江苏徐州221700

目的探讨辨证分期针刺结合中药治疗用于卒中后吞咽功能障碍中的临床效果。方法选取2021年12月—2023年6月丰县中医医院住院治疗的80例中风后吞咽功能障碍患者为研究对象。采用随机数表法分为观察组和对照组,对照组(40例)予以普通针刺... 详细信息

目的探讨辨证分期针刺结合中药治疗用于卒中后吞咽功能障碍中的临床效果。方法选取2021年12月—2023年6月丰县中医医院住院治疗的80例中风后吞咽功能障碍患者为研究对象。采用随机数表法分为观察组和对照组,对照组(40例)予以普通针刺联合中药进行治疗,观察组(40例)予以辨证分期针联合中药进行治疗。比较两组患者电视透视吞咽功能检查、口期传递时间、咽启动延迟时间、咽期时长、喉向前和向上距离(%C2-4)、食管入口的最大开放程度、误吸情况。结果相较于对照组,观察组治疗后的电视透视吞咽功能评分更高,口期传递时间更长,咽启动延迟时间、咽期时长更短,喉向前和向上距离(%C2-4)更大,差异有统计学意义(t=2.222、2.781、2.554、2.304、2.303、3.381,P均<0.05)。两组误吸情况相对比,观察组误吸发生率低于对照组,差异有统计学意义(χ^(2)=6.135,P<0.05)。结论应用辨证分期针刺结合中药治疗脑卒中后发生吞咽功能障碍的临床治疗效果明显,可以改善吞咽功能,且能提高吞咽时喉上抬及喉前移的距离,减少误吸发生率和梨状窝滞留。

关键词：辨证分期针刺中药中风吞咽功能障碍临床疗效

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Development of an intelligent heterojunction fenton catalyst for chemodynamic/starvation synergistic cancer therapy

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Journal of Materials Science & Technology 2023年第10期141卷 11-20页

作者： Weishu Ni Ke jiang Qiaomei Ke jia Su Xianying Cao ling Zhang Chunxia li Key Laboratory of Food Nutrition and Functional Food of Hainan Province School of Food Science and EngineeringHainan UniversityHaikou 570228China Institute of Molecular Sciences and Engineering Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228China State Key Laboratory of Silicon Materials Zhejiang UniversityHangzhou 310027China

Chemodynamic therapy(CDT)as an emerging modality in cancer treatment,its implementation remains a daunting challenge by the lack of smart Fenton catalyst under acidic tumor ***,we have successfully constructed a Fe_(3)O_(4)@MIL-100 heterojunction by growing Fe-based metal-organic framework(MIL-100)onto the surface of Fe_(3)O_(4) *** as-made heterojunction after encapsu-lating glucose oxidase(termed FMG)is demonstrated as a pH-responsive intelligent Fenton nanosystem with the synergistic effect of starvation therapy(ST).Density functional theory(DFT)calculations reveal that such heterojunction could greatly reduce the energy barrier of the Fenton reaction,which better ex-plains the mechanism of Fenton performance ***,the encapsulated glucose oxidase has successfully activated the ST process,in which its generated H_(2)O_(2) and gluconic acid further improve the CDT *** O_(2) from the enhanced CDT in turn promotes the enzymatic reaction of glucose *** Fenton/cascade enzymatic reaction operates in a self-feedback manner as *** vitro and in vivo experiments demonstrate that such intelligent Fenton nanoreactors provide a powerful anti-cancer mechanism for effective tumor ablation with enough *** work provides insights into the developments of MOF-based heterojunctions as powerful anticancer treatment nanoreactors.

关键词： Heterostructure Metal-organic framework Fenton catalyst Chemodynamic therapy Starvation therapy

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