检索结果-南通市图书馆

Dielectric-ion-conductive ZnNb2O6 layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 693-701页

作者： Haifeng Yang Jian wang Panpan Zhang Xiaomin Cheng Qinghua Guan Jing Dong Bixian Chen Lujie Jia Jing Zhang Yongzheng Zhang Yunjian Liu hongzhen lin School of Materials Science and Engineering Jiangsu University i-Lab & CAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Helmholtz Institute Ulm (HIU) Karlsruhe Institute of Technology (KIT) School of Materials Science and Engineering Xi'an University of Technology State Key Laboratory of Chemical Engineering East China University of Science and Technology

Rechargeable aqueous zinc-metal batteries （AZMBs） are promising candidates for large-scale energy storage systems due to their low cost and high ***,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn（H2O）62+solvation ***,learnt from self-generated solid electrolyte interphase （SEI） in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface （ZNB@Zn）,acting as a rapid desolvation *** zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical ***,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility （99.54%） even under high current density and depth of discharge ***,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g-1and outstanding rate performance up to 10 A *** large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.

关键词： Zn metal battery Dielectric artificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition

High-performance transparent graphene-based antennas

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Technological Sciences 2025年

作者： Chaoye hong Lusong WEI Weijia wang Youmei TANG Qinghai ZHU Jiangtao HUANGFU Mingsheng XU College of Integrated Circuits State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang University College of Information Science and Electronic Engineering Zhejiang University

With the continuous development of wireless communication technology, applications in the military, aerospace,and vehicle wireless communication sectors have demanded miniaturized and aesthetically pleasing antennas. Transparent antennas, which combine the advantages of optical and radio-frequency(RF) technologies, have become a popular research topic. However, existing transparent antennas often suffer from complex preparation processes, fragile materials, poor conductivity, and low optical transmittance. Here, we develop hybrid conductive thin films using graphene and silver nanowires,achieving a transmittance of 86% and a sheet resistance of 7.8 Ω/sq with high environmental stability. We demonstrate the suitability of this nanocomposite in two applications: a transparent ultrahigh-frequency RF-identification tag folded dipole antenna and a transparent X-band microwave half-wave dipole antenna. These antennas offer high gain, high radiation efficiency, and small size, indicating that transparent graphene-based antennas have remarkable potential for intelligent information sensor systems.

关键词：

血浆和肽素水平在垂体腺瘤患者术后尿崩症评估中的价值

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中华神经外科杂志 2017年第4期33卷 388-391页

作者：林昆哲魏梁锋黄银兴赵琳洪景芳王守森福州总医院神经外科 350025

目的探讨垂体腺瘤患者的血浆和肽素水平对术后尿崩症的评估价值。方法前瞻性连续性收集2014年3月至2015年3月福州总医院神经外科收治的53例垂体腺瘤患者的临床资料。所有病例均行经鼻蝶窦入路手术切除肿瘤。术前行MRI检查观测垂体后叶... 详细信息

目的探讨垂体腺瘤患者的血浆和肽素水平对术后尿崩症的评估价值。方法前瞻性连续性收集2014年3月至2015年3月福州总医院神经外科收治的53例垂体腺瘤患者的临床资料。所有病例均行经鼻蝶窦入路手术切除肿瘤。术前行MRI检查观测垂体后叶亮点（PPBS）的显示情况和信号比。采用ELISA检测术前、术后第1天的血浆和肽素水平，且于术后监测尿量。根据术后有无尿崩症将患者分为尿崩症组（23例）和对照组（未发生尿崩症，30例）。根据PPBS结果将患者分为PPBS阳性组（45例）和PPBS阴性组（8例）。分析垂体腺瘤患者的血浆和肽素水平与术后尿崩症以及PPBS的关系。结果无论是尿崩症组或对照组，其术前、术后的血浆和肽素水平[M（P25，P75）]的差异均元统计学意义（均P〉0．05）。尿崩症组的术前、术后第1天的血浆和肽素水平[分别为5．35（4．24，8．25）pmol／L）和4．87（4．08，6．43）pmol／L]均低于对照组[术前：6．82（4．99，10．77）pmol／L，术后：6．21（4．81，9．84）pmol／L]（均P〈0．05）。PPBS阳性组的术前血浆和肽素水平[6．57（4．87，10．39）pmol／L]高于PPBS阴性组[4．65（3．49，6．23）pmol／L]（P〈0．05）。PPBS的信号强度与血浆和肽素水平无相关性（P〉0．05）。结论血浆和肽素水平可作为垂体腺瘤术后尿崩症的预测指标。术前、术后第1天血浆和肽素水平较低的垂体腺瘤患者其术后发生尿崩症的风险较高。

关键词：垂体肿瘤尿崩症和肽素垂体后叶亮点

Maintaining moderate levels of hypochlorous acid promotes neural stem cell proliferation and differentiation in the recovery phase of stroke

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 845-857页

作者： lin-Yan Huang Yi-De Zhang Jie Chen Hai-Di Fan Wan wang Bin wang Ju-Yun Ma Peng-Peng Li Hai-Wei Pu Xin-Yian Guo Jian-Gang Shen Su-Hua Qi School of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Pharmacy Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Laboratory Medicine Branch Hospital of Huai’an First People’s HospitalHuai’anJiangsu ProvinceChina Department of Laboratory Medicine the Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Chinese Medicine The University of Hong KongHong Kong Special Administrative RegionChina

It has been shown clinically that continuous removal of ischemia/reperfusion-induced reactive oxygen species is not conducive to the recovery of late ***,previous studies have shown that excessive increases in hypochlorous acid after stroke can cause severe damage to brain *** previous studies have found that a small amount of hypochlorous acid still exists in the later stage of stroke,but its specific role and mechanism are currently *** simulate stroke in vivo,a middle cerebral artery occlusion rat model was established,with an oxygen-glucose deprivation/reoxygenation model established in vitro to mimic *** found that in the early stage(within 24 hours)of ischemic stroke,neutrophils produced a large amount of hypochlorous acid,while in the recovery phase(10 days after stroke),microglia were activated and produced a small amount of hypochlorous ***,in acute stroke in rats,hypochlorous acid production was prevented using a hypochlorous acid scavenger,taurine,or myeloperoxidase inhibitor,4-aminobenzoic acid *** results showed that high levels of hypochlorous acid(200μM)induced neuronal apoptosis after oxygen/glucose deprivation/***,in the recovery phase of the middle cerebral artery occlusion model,a moderate level of hypochlorous acid promoted the proliferation and differentiation of neural stem cells into neurons and *** suggests that hypochlorous acid plays different roles at different phases of cerebral ischemia/reperfusion *** levels of hypochlorous acid(5 and 100μM)promoted nuclear translocation ofβ-*** transfection of single-site mutation plasmids,we found that hypochlorous acid induced chlorination of theβ-catenin tyrosine 30 residue,which promoted nuclear ***,our study indicates that maintaining low levels of hypochlorous acid plays a key role in the recovery of neurological function.

关键词： cell differentiation cerebral ischemia/reperfusion injury chlorination hypochlorous acid microglia neural stem cell neurogenesis nuclear translocation stroke β-catenin

男生首次遗精年龄与体力活动和睡眠时间的关系研究

在线全文

学校读者我要写书评

暂无评论

上海交通大学学报（医学版） 2017年第3期37卷 394-397页

作者：彭林丽王宏何芳程绪婷王翎懿蒋佳佳重庆医科大学公共卫生与管理学院重庆400016 重庆医科大学医学与社会发展研究中心国民健康社会风险预警协同创新中心重庆400016

目的·通过了解重庆市主城区中小学男生首次遗精发生情况,探讨首次遗精发生年龄与体力活动和睡眠时间的关系。方法·采用分层随机整群抽样抽取重庆市主城区男生3 403人(10~18岁),进行体格检查和问卷调查,选择其中经历首次遗精的1 282人... 详细信息

目的·通过了解重庆市主城区中小学男生首次遗精发生情况,探讨首次遗精发生年龄与体力活动和睡眠时间的关系。方法·采用分层随机整群抽样抽取重庆市主城区男生3 403人(10~18岁),进行体格检查和问卷调查,选择其中经历首次遗精的1 282人作为研究对象。根据首次遗精发生年龄,分为适时组(964人)和较晚组(318人)。结果·2组在平均每周进行高等(χ~2=11.488,P=0.009)、中等(χ~2=7.829,P=0.050)强度体力活动,平均每天睡眠时间(χ~2=17.803,P=0.000)构成上均存在差异。控制年龄、身高、体质量等协变量,与适时组相比,较晚组的男生更少进行每周5~7 d(OR=0.596,95%CI:0.367~0.967)和3~4 d(OR=0.590,95%CI:0.370~0.941)高等强度体力活动,也更少有平均每天9~11 h(OR=0.207,95%CI:0.088~0.489)睡眠时间。结论·男生首次遗精发生年龄可能与其每周进行体力活动的强度和每天睡眠时间有关。

关键词：首次遗精体力活动睡眠时间

在线全文

学校读者我要写书评

暂无评论

开发利用对泥石流滩地土壤肥力特性的影响

土壤通报 2004年第1期35卷 16-20页

作者：王道杰周麟谢洪王士革中国科学院水利部成都山地灾害与环境研究所四川成都610041

龙洞沟泥石流滩地剖面结构和土壤物理结构较差 ,砂石化现象严重 ;土壤微团聚体数量较少 ,粒级间比例不合理 ;土壤养分除全钾极丰富外 ,其它大部分养分都处于缺乏或极缺状态。通过开发利用 ,其表土层结构特性和养分状况得到显著改善 :砾... 详细信息

龙洞沟泥石流滩地剖面结构和土壤物理结构较差 ,砂石化现象严重 ;土壤微团聚体数量较少 ,粒级间比例不合理 ;土壤养分除全钾极丰富外 ,其它大部分养分都处于缺乏或极缺状态。通过开发利用 ,其表土层结构特性和养分状况得到显著改善 :砾石含量由 63 .0 3～ 70 .78%减少到 3 9.66～ 57.62 % ,粉粒和粘粒含量由 2 6.75～ 3 1.89%增加到 3 0 .54～41.93 % ;有机质由 7.1～ 10 .8gkg- 1提高到 15.8～ 2 6.9gkg- 1;全氮由 1.2 0～ 1.40gkg- 1提高到 1.50～ 1.93gkg- 1;全磷由0 .46～ 0 .57gkg- 1提高到 0 .48～ 0 .79gkg- 1;有效氮由 47.2 2～ 56.67mgkg- 1提高到 79.3 9～ 119.46mgkg- 1;有效磷由 2 .2 1～ 4.69mgkg- 1提高到 5.58mgkg- 1;有效钾由 2 9.84～ 40 .3 6mgkg- 1提高到 51.89～ 89.3 6mgkg- 1。不同利用模式的改良作用不同 ,依次为 :菜园地 >苹果 +蔬菜地 >苹果园地 >苹果 +花椒地 >花椒园地 >

关键词：开发利用泥石流滩地土壤肥力特征特性影响因素

Mechanical properties and microstructures of Mg-6Si alloys fabricated using the tungsten-inert-gas arc additive manufacturing

在线全文

学校读者我要写书评

暂无评论

China Foundry 2025年

作者： Peng-cheng Zhou Guo-qiang You Jin-yu Feng Lei wang Xiao lin Bin Jiang College of Materials Science and Engineering Chongqing University National Engineering Research Center for Magnesium Alloys Chongqing University National Key Laboratory of Advanced Casting Technologies Chongqing University

Si-containing Mg alloys solidified at conventional rates often contain coarse and sharp Mg2Si phases,which can result in inferior material *** this study,Mg-6wt.%Si （Mg-6Si） alloy was prepared by wire arc additive manufacturing （WAAM）,employing the gas tungsten arc welding technique with rapid *** microstructures and mechanical properties of the WAAM alloy were investigated and compared with those of the as-cast samples produced using a metal *** results indicate that the WAAM Mg-6Si is harder and stronger than the as-cast *** microhardness of the WAAM Mg-6Si increases by 36.6%in comparison to that of as-cast Mg-6Si ***,the average tensile strengths at room temperature and 150°C increases by 63.4%and 21.3%,*** refines both the Mg2Si phase and the overall grains,resulting in a homogeneous morphology and improved mechanical *** granular Mg2Si phase,characterized by fine particles with a diffused distribution,shows a significant increase in *** acicular Mg2Si phase is distributed along the grain boundaries,and its concentration significantly *** average grain size of the Mg2Si phase is about 9.20μm,about 5 times *** refinement and distribution of the granular Mg2Si phase,as well as the reduction in the amount of needle-like Mg2Si particles,are the key factors for improving the mechanical properties of WAAM Mg-6Si alloy.

关键词：

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

单片微机电子送经机构

苏州丝绸工学院学报 1992年第3期12卷 39-44页

作者：林红王家善苏州丝绸工学院电工教研室苏州丝绸工学院自动化研究室

本文针对国内仍在使用老织机的现状,从织机改造的角度出发,利用单片微机作控制器,在K252丝织机上研制了一台电子送经机构.该机构具有四种功能:①手动送经;②手动卷经;③正常自动送径;④保护功能,其最大优点就是机构简单,反应迅速,抗干... 详细信息

本文针对国内仍在使用老织机的现状,从织机改造的角度出发,利用单片微机作控制器,在K252丝织机上研制了一台电子送经机构.该机构具有四种功能:①手动送经;②手动卷经;③正常自动送径;④保护功能,其最大优点就是机构简单,反应迅速,抗干扰性强,尤其适用于高速织机.

关键词：单片机电子送径丝织机械

Successful emergency surgical intervention in acute non-STsegment elevation myocardial infarction with rupture:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2025年第4期13卷 41-47页

作者： Xing-Po Li Zi-Shan wang hong-Xia Yu Shan-Shan wang Department of Cardiovascular Medicine Huantai County Hospital of Traditional Chinese MedicineZibo 256400Shandong ProvinceChina Department of Cardiovascular Medicine Zibo Hospital of Integrated Traditional Chinese and Western MedicineZibo 255500Shandong ProvinceChina

BACKGROUND The incidence of acute myocardial infarction(AMI)is rising,with cardiac rupture accounting for approximately 2%of deaths in patients with acute ST-segment elevation myocardial infarction(STEMI).Ventricular free wall rupture(FWR)occurs in approximately 2%of AMI patients and is notably rare in patients with *** of cardiac rupture include left ventricular FWR,ventricular septal rupture,and papillary muscle *** FWR usually leads to acute cardiac tamponade or electromechanical dissociation,where standard resuscitation efforts may not be *** septal rupture and papillary muscle rupture often result in refractory heart failure,with mortality rates over 50%,even with surgical or percutaneous repair *** SUMMARY We present a rare case of an acute non-STEMI patient who suffered sudden FWR causing cardiac tamponade and loss of consciousness immediate before undergoing coronary *** resuscitation and emergency open-heart repair along with coronary artery bypass grafting resulted in successful patient *** This case emphasizes the risks of AMI complications,shares a successful treatment scenario,and discusses measures to prevent such complications.

关键词： Acute non-ST segment elevation myocardial infarction Cardiac rupture Acute myocardial infarction Free wall rupture Case report