检索结果-南通市图书馆

A polyethylene microsphere-coated separator with rapid thermal shutdown function for lithium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2020年第5期29卷 33-40页

作者： Chongrong zhang hui Li Shixuan Wang Yuliang Cao Hanxi Yang Xinping Ai Faping zhong Hubei Key Lab of Electrochemical Power Sources College of Chemistry&Molecular ScienceWuhan UniversityWuhan 430072HubeiChina National Engineering Research Center of Advanced Energy Storage Materials Changsha 410205HunanChina

Thermal runaway is the main factor contributing to the unsafe behaviors of lithium-ion batteries(LIBs)in practical *** application of separators for the thermal shutdown has been proven as an effective approach to protecting LIBs from thermal *** this work,we developed a thermal shutdown separator by coating a thin layer of low-density polyethylene microspheres(PM)onto a commercial porous polypropylene(PP)membrane and investigated the thermal response behaviors of the as-prepared PM/PP separator in *** structural and thermal analysis results revealed that the coated PM layer had a porous structure,which facilitated the occurrence of normal charge-discharge reactions at ambient temperature,although it could melt completely and fuse together within very short time periods:3 s at 110℃and 1 s at 120℃,to block off the pores of the PP substrate,thereby cutting off the ion transportation between the electrodes and interrupting the battery ***,the PM/PP separator exhibits very similar electrochemical performance to that of a conventional separator at ambient ***,it performs a rapid thermal shutdown at an elevated temperature of^110℃,thus controlling the temperature rise and maintaining the cell in a safe *** to its synthetic simplicity and low cost,this separator shows promise for possible application in building safe LIBs.

关键词： Thermal shutdown Separator Safety Lithium-ion battery

A new hopane triterpenoid from Saxiglossum angustissimum

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2008年第7期19卷 835-836页

作者： hui Fang Pi Zhi Hong zhong Han Li Ruan Peng zhang Yong hui zhang Ji Zhou Wu Faculty of Pharmaceutical Sciences Tongji Medical College of Huazhong University of Science and Technology Wuhan 430030 PR China

A new hopane triterpenoid, hopane 22, 29-diol-29-formate （1）, has been isolated from the whole herbs of Saxiglossum angustissimum （Cries.） Ching and its structure has been successfully determined on the basis of s... 详细信息

关键词： Saxiglossum angustissimum Hopane Hopane-22 29-Diol-29-formate

Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

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 385-396页

作者： Mingming zhang Hanyu Wu Qi Chen Jiaxin Yang Bonan Liu School of Mechanical Electronic and Control Engineering Beijing Jiaotong University China University of Petroleum

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of NH3/O2and the production of N2/H2change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath/sheath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of NH3by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for OH and O（1S）.However,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval has little effect on the sheath structure and gas mixture *** research results of this paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also help to explore th

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model

吉林西部沙丘区造林树种在干旱——补水循环条件下生长率的比较

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

吉林林业科技 2000年第5期29卷 5-7页

作者：韩国辉刘福金徐程扬梁万军张忠辉章林李绍臣韩国君吉林省林业科学研究院吉林长春130031 白城市林业学校吉林白城137000

本文对 5个树种在干旱——补水循环条件下各器官的生长状况进行了调查 ,并对各树种间的生长率情况进行了比较。结果表明 ,杨树、樟子松、长白松和沙棘补水后短期内生长明显加快 ,其生长率由大到小的顺序为 :沙棘 >杨树 >长白松 >樟子松... 详细信息

本文对 5个树种在干旱——补水循环条件下各器官的生长状况进行了调查 ,并对各树种间的生长率情况进行了比较。结果表明 ,杨树、樟子松、长白松和沙棘补水后短期内生长明显加快 ,其生长率由大到小的顺序为 :沙棘 >杨树 >长白松 >樟子松。而经济树种枸杞反映不明显。

关键词：沙丘区造林生长率干旱补水吉林西部树种

Subretinal fibrosis secondary to neovascular age-related macular degeneration:mechanisms and potential therapeutic targets

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第2期20卷 378-393页

作者： Jingxiang zhang Xia Sheng Quanju Ding Yujun Wang Jiwei Zhao Jingfa zhang Department of Ophthalmology People’s Hospital of Huangdao DistrictQingdaoShandong ProvinceChina Department of Urology People’s Hospital of Huangdao DistrictQingdaoShandong ProvinceChina Department of Ophthalmology Shanghai General Hospital(Shanghai First People’s Hospital)Shanghai Jiao Tong University School of MedicineShanghaiChina National Clinical Research Center for Eye Diseases Shanghai Key Laboratory of Ocular Fundus DiseasesShanghai Engineering Center for Visual Science and PhotomedicineShanghai Engineering Center for Precise Diagnosis and Treatment of Eye DiseasesShanghaiChina

Subretinal fibrosis is the end-stage sequelae of neovascular age-related macular *** causes local damage to photoreceptors,retinal pigment epithelium,and choroidal vessels,which leads to permanent central vision loss of patients with neovascular age-related macular *** pathogenesis of subretinal fibrosis is complex,and the underlying mechanisms are largely ***,there are no effective treatment options.A thorough understanding of the pathogenesis of subretinal fibrosis and its related mechanisms is important to elucidate its complications and explore potential *** current article reviews several aspects of subretinal fibrosis,including the current understanding on the relationship between neovascular age-related macular degeneration and subretinal fibrosis;multimodal imaging techniques for subretinal fibrosis;animal models for studying subretinal fibrosis;cellular and non-cellular constituents of subretinal fibrosis;pathophysiological mechanisms involved in subretinal fibrosis,such as aging,infiltration of macrophages,different sources of mesenchymal transition to myofibroblast,and activation of complement system and immune cells;and several key molecules and signaling pathways participating in the pathogenesis of subretinal fibrosis,such as vascular endothelial growth factor,connective tissue growth factor,fibroblast growth factor 2,platelet-derived growth factor and platelet-derived growth factor receptor-β,transforming growth factor-βsignaling pathway,Wnt signaling pathway,and the axis of heat shock protein 70-Toll-like receptors 2/*** review will improve the understanding of the pathogenesis of subretinal fibrosis,allow the discovery of molecular targets,and explore potential treatments for the management of subretinal fibrosis.

关键词： choroidal neovascularization epithelial-mesenchymal transition mesenchymal transition myofibroblast neovascular age-related macular degeneration submacular fibrosis subretinal fibrosis therapeutic targets transforming growth factor-β vascular endothelial growth factor

Structural and microwave absorption properties of CoFe_(2)O_(4)/residual carbon composites

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 221-232页

作者： Yuanchun zhang Shengtao Gao Xingzhao zhang Dacheng Ma Chuanlei Zhu Jun He Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining Anhui University of Science and TechnologyHuainan 232001China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

Electromagnetic interference,which necessitates the rapid advancement of substances with exceptional capabilities for bsorbing electromagnetic waves,is of urgent concern in contemporary *** this work,CoFe_(2)O_(4)/residual carbon from coal gasification fine slag(CFO/RC)composites were created using a novel hydrothermal *** mechanisms for microwave absorption,including conductive loss,natural resonance,interfacial dipole polarization,and magnetic flux loss,are involved in these ***,compared with pure residual carbon materials,this composite offers superior capabilities in microwave *** 7.76GHz,the CFO/RC-2 composite achieves an impressive minimum reflection loss(RL_(min))of-43.99 dB with a thickness of 2.44 ***,CFO/RC-3 demonstrates an effective absorption bandwidth(EAB)of up to 4.16 GHz,accompanied by a thickness of *** study revealed the remarkable capability of the composite to diminish electromagnetic waves,providing a new generation method for microwave absorbing materials of superior quality.

关键词： coal gasification slag residual carbon hydrothermal method microwave absorption CoFe_(2)O_(4)

Effectiveness of six-step complex decongestive therapy for treating upper limb lymphedema after breast cancer surgery

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第25期10卷 8827-8836页

作者： hui-Zhen zhang Qiao-Ling zhong hui-Ting zhang Qing-Hua Luo Hai-Lin Tang Li-Juan zhang Sun Yat-sen University Cancer Center State Key Laboratory of Oncology in South ChinaGuangzhou 510060China

BACKGROUND Complex decongestive therapy(CDT)is currently recommended as the standard treatment for *** is a four-step detumescence therapy that can effectively treat upper limb lymphedema after breast cancer surgery,and is considered non-invasive,painless and without side *** To determine the effectiveness of a six-step CDT involving a foam granule bandage for the treatment of upper extremity lymphedema pressure after breast cancer surgical *** The study included 100 patients with upper extremity lymphedema after breast cancer *** surgical methods were mastectomy plus axillary lymph node dissection and breast preservation plus sentinel lymph node *** study population was further divided into the experimental group and control group with 50 cases in each *** control group was given conventional CDT(four-step method),which included skin care,freehand lymphatic drainage,foam granule pressurized bandage,and functional *** the experimental group,a six-step CDT method was applied that involved a foam particle bandage combined with air wave pressure therapy in addition to the four steps of conventional *** in both groups were given one course of treatment daily(20 times),and the changes in body moisture and subjective symptoms were measured before and after treatment,preoperatively and 20 times after *** No statistically significant differences in 50-Hz bioelectrical impedance and extracellular moisture ratio were observed between the two groups before treatment,suggesting comparability of the baseline *** treatment,the 50-Hz bioelectrical impedance of the experimental group was significantly higher than that in the control group,and the extracellular moisture ratio was significantly lower than that in the control group.A comparison of the differences between the two groups before and after treatment indicated that the treatment effect in the experimental group was better than th

关键词： Comprehensive deswelling Foam granule bandage Breast cancer Upper limb lymphedema Air pressure wave therapy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

合成E-10-羟基-2-癸烯酸的新方法

合成化学 2017年第3期25卷 245-249页

作者：奉强韩涛涂碧玉何冰李仲辉张小玲成都师范学院化学与生命科学学院四川成都611130 成都师范学院功能分子研究所四川成都611130

以1,8-辛二醇(1)为起始原料,经4步反应合成了(E)-10-羟基-2-癸烯酸,其结构经1H NMR,13C NMR和MS确证。考察了乙酰氯、缚酸剂种类及其用量[r=n(1)∶n(乙酰氯)∶n(缚酸剂)]对8-乙酰氧基-1-辛醇(2)收率的影响以及反应温度、三乙胺滴加温度... 详细信息

以1,8-辛二醇(1)为起始原料,经4步反应合成了(E)-10-羟基-2-癸烯酸,其结构经1H NMR,13C NMR和MS确证。考察了乙酰氯、缚酸剂种类及其用量[r=n(1)∶n(乙酰氯)∶n(缚酸剂)]对8-乙酰氧基-1-辛醇(2)收率的影响以及反应温度、三乙胺滴加温度、低温停留时间对8-乙酰氧基辛醛(3)收率的影响。结果表明:以三乙胺为缚酸剂,r=1.0∶1.1∶2.0时,2产率达78%;反应温度为-65℃、三乙胺滴加温度低于-50℃、低温反应3 h,3产率达97%。

关键词： 1,8-辛二醇 E-10-羟基-2-癸烯酸 Swern氧化合成

重度大脑中动脉狭窄所致内分水岭梗死患者早期脑卒中进展的相关危险因素分析

在线全文

学校读者我要写书评

暂无评论

中华老年心脑血管病杂志 2017年第4期19卷 399-402页

作者：徐辉王经忠张莹方岩周海云杨青松姬卫东商丘市第一人民医院神经内科 476000

目的探讨影响重度大脑中动脉狭窄所致内分水岭梗死(IWI)患者早期脑卒中进展的相关因素。方法选择商丘市第一人民医院神经内科自2012年1月~2016年5月收治的资料完整的IWI患者84例,根据病情进展情况分为进展组47例和稳定组37例,比较2组患... 详细信息

目的探讨影响重度大脑中动脉狭窄所致内分水岭梗死(IWI)患者早期脑卒中进展的相关因素。方法选择商丘市第一人民医院神经内科自2012年1月~2016年5月收治的资料完整的IWI患者84例,根据病情进展情况分为进展组47例和稳定组37例,比较2组患者基线临床资料、脑梗死模式和侧支循环情况。结果进展组糖尿病和入院后血压降低比例明显高于稳定组(48.9%vs 27.0%、78.7%vs 43.2%),区域软脑膜侧支评分(rLMC)明显低于稳定组[(5.30±2.21)分vs(8.03±4.25)分,P0.05),但进展组混合脑梗死比例明显高于稳定组(25.5%vs 5.4%,P<0.05)。rLMC是IWI后脑卒中进展的独立危险因素(OR=1.264,95%CI:1.052~1.519,P=0.012)。结论 rLMC是大脑中动脉狭窄所致IWI后早期脑卒中进展的独立危险因素。

关键词：大脑中动脉梗死,大脑中动脉糖尿病卒中危险因素