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Highly crystalline vinylene-linked covalent organic frameworks enhanced solid polycarbonate electrolyte for dendrite-free solid lithium metal batteries

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Nano Research 2022年第9期15卷 8083-8090页

作者： kaige zhang Chaoqun Niu Chengbing Yu Li zhang Yuxi Xu School of Materials and Engineering Zhengzhou UniversityZhengzhou 450001China School of Engineering Westlake UniversityHangzhou 310024China School of Materials Science and Engineering Shanghai UniversityShanghai 201800China

The development of solid-state electrolytes(SSEs)with high ionic conductivity,outstanding electrochemical window,and promising mechanical strength is a key factor in realizing the commercialization of high energy density solid-state lithium metal batteries(LMBs).Covalent organic frameworks(COFs)are a functional crystalline material with highly customizable molecular networks and one-dimensional channel structures,thus showing great potential applications in ***,we design flexible COF-poly(vinyl ethylene carbonate)(PVEC)(abbreviated as COF-PVEC)composite electrolyte films with excellent ionic conductivity and high mechanical strength,enabling dendrite-free and long-term running solid-state *** to the lithiumphilic triazine and carbon–carbon double bonds groups in the COF skeleton,the obtained flexible COF-PVEC shows high ionic conductivity up to 1.11×10^(−4)S·cm^(−1)at 40℃,and enlarged electrochemical window up to 4.6 V(***^(+)/Li)compared with pure PVEC *** the same time,the lithium dendrites are efficiently inhibited after discharge–charging cycles,due to the improved Young’s modulus(150 MPa)and ordered channels of *** the various features of COF-PVEC,we assembled a solid-state full battery with LiFePO4 cathode,which showed superior rate capacity(151.8,146.2,139.2,128.1,113.7,and 100.8 mAh·g^(−1)at 0.1,0.2,0.5,1,1.5,and 2 C,respectively)and excellent long-term cycling stability(over 400 cycles at 1 C).We believe that the COF-based composite electrolyte can become one of the most promising high-performance SSEs for solid-state LMBs.

关键词： solid-state electrolytes covalent organic frameworks lithium dendrites solid-state lithium metal batteries

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Optimization of evidence-based research in the prevention and treatment of coronary heart disease with traditional Chinese medicine:A comprehensive review

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Journal of Traditional Chinese Medical Sciences 2022年第2期9卷 100-107页

作者： Hongcai Shang kaige zhang Zhiyue Guan Xiaoyu zhang Key Laboratory of Chinese Internal Medicine of Ministry of Education Dongzhimen HospitalBeijing University of Chinese MedicineBeijing100700China

Coronary heart disease(CHD) has severely impacted the lives and health of patients for ages. Although the modern methods used for the prevention and treatment of CHD have been increasingly perfected,clinical problems remain that require solutions. In the prevention and treatment of CHD with traditional Chinese medicine(TCM), great therapeutic advantages have been demonstrated. However, the expression of its advantages relies on scientific evidence-based research and evaluation, which require further optimization and improvement. Therefore, this review aims to comprehensively emphasize our understanding of the current deficiencies in TCM evidence-based studies and the necessity of adopting scientific evidence-based optimization methods for use in research. In this process, evidence should be produced in a standard manner, and the advantages of TCM patterns should be accurately stated because these factors contribute to efficient transformation and proper verification of the obtained ***, focusing on patient-oriented medicine and doctor-patient relationships is also *** methods are of great significance to prove the clinical efficacy of TCM and promote its development.

关键词： Coronary heart disease Traditional Chinese medicine Evidence-based research Evidence-based medicine Patient-oriented medicine Doctorepatient relationships Optimization

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Melon short internode(CmSi)encodes an ERECTA-like receptor kinase regulating stem elongation through auxin signaling

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Horticulture Research 2020年第1期7卷 269-282页

作者： Sen Yang kaige zhang Huayu Zhu Xiaojing zhang Wenkai Yan Nana Xu Dongming Liu Jianbin Hu Yufeng Wu Yiqun Weng Luming Yang College of Horticulture Henan Agricultural University63 Nongye Road450002 ZhengzhouChina State Key Laboratory of Crop Genetics and Germplasm Enhancement Bioinformatics CenterNanjing Agricultural University210095 NanjingChina USDA-ARS Vegetable Crops Research UnitHorticulture DepartmentUniversity of Wisconsin–MadisonMadisonWI 53706USA

Plant height is one of the most important agronomic traits that directly determines plant architecture,and compact or dwarf plants can allow for increased planting density and land utilization as well as increased lodging resistance and economic *** least four dwarf/semidwarf genes have been identified in different melon varieties,but none of them have been cloned,and little is known about the molecular mechanisms underlying internode elongation in ***,we report map-based cloning and functional characterization of the first semidwarf gene short internode(Cmsi)in melon,which encodes an ERECTA-like receptor kinase regulating internode ***-temporal expression analyses revealed that CmSI exhibited high expression in the vascular bundle of the main stem during internode *** expression level of CmSI was positively correlated with stem length in the different melon varieties *** expression of CmSI in Arabidopsis and cucumber suggested CmSI as a positive regulator of internode elongation in both *** quantitation and transcriptome analysis showed that the auxin content and the expression levels of a number of genes involved in the auxin signaling pathway were altered in the semidwarf mutant,including several well-known auxin transporters,such as members of the ABCB family and PINFORMED genes.A melon polar auxin transport protein CmPIN2 was identified by protein–protein interaction assay as physically interacting with CmSI to modulate auxin ***,CmSI functions in an auxin-dependent regulatory pathway to control internode elongation in *** findings revealed that the ERECTA family gene CmSI regulates stem elongation in melon through auxin signaling,which can directly affect polar auxin transport.

关键词： species dwarf traits

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The Aural Discomfort Inside the Car Analysis and Control In the Instant the Door Closes

The Aural Discomfort Inside the Car Analysis and Control In ...

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2019中国汽车工程学会年会

作者： Mao Guangjun zhang Jun zhang kaige Jiang Guang Li Xin Gao Pan Geely Automobile Research Institute

With the improvement of the vehicle leakage performance,the aural discomfort phenomenon appeared during closing *** studies for closing door quality are more,but the studies for aural discomfort are very *** this paper,through a large number of objective test and subjective evaluation of the vehicles,andit is systematically studied the relationship between leakage under positive pressure and aural discomfort during closing *** it theoretically deduces to the minimum closingdoor speed,theY-direction projection area,vehicle air leakage,cross-sectional area of the vehicle,decompression air vent ventilation area relationship with the aural pressure fluctuation inside the car,and the objective test data supportscompletely the validity of the *** this paper,it puts forward originally the human aural comfort threshold definition of objective evaluationand it has directive significance to design and develop aural comfort in the instant the door closes.

关键词： aural discomfort threshold to aural comfort the vehicle leakage of positive pressure

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不同风嘴形式分体箱梁桥梁的静力风致稳定性能

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土木工程学报 2016年第6期49卷 84-93页

作者：杨詠昕周锐张凯歌葛耀君同济大学土木工程防灾国家重点实验室上海200092

作为大跨径以及超大跨径桥梁一种新兴的断面形式,分体箱梁可以改善空气动力性能和提高颤振临界风速,但是还需要保证其静力风致稳定性能,研究了不同风嘴形式下分体箱梁的静力三分力系数和静力风致稳定性能随开槽率的演变规律。结果表明:... 详细信息

作为大跨径以及超大跨径桥梁一种新兴的断面形式,分体箱梁可以改善空气动力性能和提高颤振临界风速,但是还需要保证其静力风致稳定性能,研究了不同风嘴形式下分体箱梁的静力三分力系数和静力风致稳定性能随开槽率的演变规律。结果表明:两种风嘴形式分体箱梁的阻力系数随开槽率增加而增大,采用断面实体宽度为无量纲化标准时断面升力系数绝对值会随开槽率的增加而增加,这与采用断面总宽为无量纲化标准时结果相反,升力矩系数绝对值会随着开槽率的增加而减小,但这种规律性会受到风攻角的影响;风嘴对称性的变化仅改变断面阻力系数随开槽率的变化规律;两种计算模型下,对称风嘴断面分体箱梁桥梁跨中的各向位移绝对值和静力风致失稳临界风速随开槽率的变化规律完全相反,而不对称风嘴断面的各向位移变化规律相似但也有区别;总体上对称风嘴断面的最低静力风致失稳临界风速要高于不对称风嘴断面;考虑结构刚度变化会使断面开槽后静力风致失稳临界风速随着开槽率的增加而升高并超过不考虑刚度变化时的相应值,故对分体箱梁静力风致稳定性能分析时需要考虑开槽率不同带来的结构刚度变化。

关键词：分体箱梁开槽率风嘴形式静力风荷载静力风致稳定性

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集权式股权结构会影响信息技术企业创新吗——非执行董事的中介效应

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科技进步与对策 2021年第2期38卷 75-84页

作者：顾露露张凯歌中南财经政法大学金融学院湖北武汉430073

中国企业普遍具有高股权集中度。基于双重委托代理理论,以Osiris和CSMAR数据库中国信息技术类全球上市公司为样本,研究不同集权式股权结构对企业创新的差异化影响,以及非执行董事在二者关系中的作用机制。结果显示,绝对集权式股权结构... 详细信息

中国企业普遍具有高股权集中度。基于双重委托代理理论,以Osiris和CSMAR数据库中国信息技术类全球上市公司为样本,研究不同集权式股权结构对企业创新的差异化影响,以及非执行董事在二者关系中的作用机制。结果显示,绝对集权式股权结构更易形成控股股东的“支持效应”和大股东间“同舟共济”,体现为保守的创新投入和较高的创新产出;相对集权式股权结构更易形成控股股东的“掏空效应”和大股东间“同床异梦”,体现为较高的创新投入和较低的产出。基于中介效应机制的研究表明,非执行董事对创新投入的决策效应不显著,但对创新产出的“监督效应”显著,且非执行董事具有显著中介效应。进一步分析表明,两职分离能够抑制相对集权式企业控股股东的“掏空”行为;家族企业在相对集权式股权结构下的“掏空效应”和“同床异梦”更明显。

关键词：信息技术企业股权结构非执行董事创新中介效应

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A hydrophobic deep eutectic solvent based vortex-assisted dispersive liquid-liquid microextraction combined with HPLC for the determination of nitrite in water and biological samples

A hydrophobic deep eutectic solvent based vortex-assisted di...

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河南省化学会2018年学术年会

作者： kaige zhang Shuangying Li Chuang liu Qi Wang Yunhe Wang Jing Fan School of Environment Henan Key Laboratory for Environmental Pollution ControlKey Laboratory for Yellow River and Huai River Water Environment and Pollution ControlMinistry of EducationHenan Normal University

In recent years, hydrophobic deep eutectic solvents(DESs) as new generation of green solvent have attracted wide attention in liquid microextraction technique. In this paper, four hydrophobic DESs composed trioctylmethylammonium chloride of oleic acid were designed and prepared firstly. Combined with HPLC, these DESs were first time used as extraction solvent in vortex-assisted dispersive liquid-liquid microextraction for the selective enrichment and indirect determination of trace nitrite from real water and biological samples. This method is based on the diazotization-coupling reaction of nitrite with p-nitroaniline and diphenylamine in acidic water, and then the nitrite is quantified indirectly by measuring the obtained azo compounds. Some factors influencing the extraction efficiency such as the reaction conditions and extraction conditions were investigated. It is found that under the optimized conditions, the method has a linear range of 1-300 μg L with a correlation coefficient of 0.9924, LOD of 0.2 μg L-1, LOQ of 1 μg L-1, intra-day and inter-day RSD of 4.0% and 6.0%. This method was successfully applied in determination of nitrite from three environmental water and two biological samples with the recovery in the range of 90.5-115.2%. In addition, these results were well agreement with those obtained by conventional griess method.

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枯草芽孢杆菌PW2产挥发性物质对赭曲霉的抑制作用

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食品科学 2023年第14期44卷 125-133页

作者：余璐魏琛张凯歌林亲录王青云中南林业科技大学食品科学与工程学院湖南长沙410004

采用固相微萃取-气相色谱-质谱联用技术对枯草芽孢杆菌(Bacillus subtilis)PW2菌株所产抗霉活性挥发性物质(volatile compound,VC)进行成分鉴定,选取所鉴定出的单个成分采用平板对扣法测定其对赭曲霉(Aspergillus ochraceus)的抑制率,... 详细信息

采用固相微萃取-气相色谱-质谱联用技术对枯草芽孢杆菌(Bacillus subtilis)PW2菌株所产抗霉活性挥发性物质(volatile compound,VC)进行成分鉴定,选取所鉴定出的单个成分采用平板对扣法测定其对赭曲霉(Aspergillus ochraceus)的抑制率,以活性最强的VC作为关键抗霉挥发性物质(key antifungal volatile compound,KAVC),进一步研究KAVC对赭曲霉生长和产毒的作用效果及机理。结果表明:PW2菌株所产VC中鉴定出酯、醛、烷烃、醇、酮、酸、烯烃等41种成分,单个成分抗霉实验发现异辛醇对赭曲霉的抑制活性最强。在接触条件下异辛醇剂量为1562.5μL/L时可以完全抑制赭曲霉生长,且使赭曲霉毒素A含量降低23.67%。在挥发条件下异辛醇剂量为112μL/L时可以完全抑制赭曲霉生长,281μL/L时可以完全杀死赭曲霉。经异辛醇处理后的赭曲霉孢子外观褶皱、凹陷和干瘪,且细胞膜完整性被破坏,菌丝麦角甾醇含量降低了42.68%~65.40%,胞内核酸和蛋白泄漏。说明异辛醇能够通过破坏赭曲霉细胞膜抑杀赭曲霉,可为其在食品防霉中的应用提供理论依据。

关键词：枯草芽孢杆菌挥发性物质异辛醇赭曲霉赭曲霉毒素A 抑制作用

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耕层厚度对黄瓜叶片光合荧光与根系生理特性的影响

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浙江农业学报 2020年第7期32卷 1196-1205页

作者：兰挚谦张凯歌张雪艳宁夏大学农学院宁夏银川750021

高度集约化栽培模式下常年机械浅耕可引起土壤耕层变浅、犁底层变厚、土壤质量下降等问题。本试验总土层厚度设计50 cm,耕层分别设定10 cm(PL10)、20 cm(PL20)、30 cm(PL30)、40 cm(PL40)、50 cm(PL50)。在2017年和2018年研究不同耕层... 详细信息

高度集约化栽培模式下常年机械浅耕可引起土壤耕层变浅、犁底层变厚、土壤质量下降等问题。本试验总土层厚度设计50 cm,耕层分别设定10 cm(PL10)、20 cm(PL20)、30 cm(PL30)、40 cm(PL40)、50 cm(PL50)。在2017年和2018年研究不同耕层条件下黄瓜叶片光合荧光、根系生理和植株生长特性。结果表明,浅耕层(PL10、PL20)显著增大了叶片蒸腾速率(T r)和初始荧光值(F o),显著提高了根系过氧化氢酶(CAT)、过氧化物酶(POD)、超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量。中耕层(PL30)显著提高了株高相对生长率(RGH-PH)和茎体积相对生长率(RGH-SV),提高了叶片净光合速率(P n)、最大荧光值(F m)、光能转化率(F v/F m)和光化学淬灭系数(qP),显著提高了根系活力(RA)和脯氨酸(Pro)、可溶性糖(SS)、可溶性蛋白(SP)含量。浅耕层早期果实产量(FY)高于其他耕层,但在中后期显著低于其他耕层,而且深耕层(PL40和PL50)的果实产量与浅耕层相反,2个栽培季节总的果实产量PL30处理均高于其他处理。主成分分析显示,中耕层(PL30)和深耕层(PL50)显著区别于其他处理。综合植株长势和根系特性,土壤耕层深度30 cm有利于浅根系作物黄瓜的生长发育。

关键词：耕层黄瓜相对生长率光合荧光特性根系

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马拉松跑鞋中底轻量化研究进展

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北京服装学院学报（自然科学版） 2024年第3期44卷 16-22页

作者：孙佳丽张凯歌张焱北京服装学院材料科学与工程学院北京100029

随着马拉松运动的流行,轻量化跑鞋在缓震、支撑和舒适等性能基础上强化了轻便的特性,受到马拉松爱好者的青睐,具有广阔的发展前景。跑鞋实现轻量化,技术核心在于中底材料和结构的合理优化。本文回顾了跑鞋中底轻量化的发展历程,重点综... 详细信息

随着马拉松运动的流行,轻量化跑鞋在缓震、支撑和舒适等性能基础上强化了轻便的特性,受到马拉松爱好者的青睐,具有广阔的发展前景。跑鞋实现轻量化,技术核心在于中底材料和结构的合理优化。本文回顾了跑鞋中底轻量化的发展历程,重点综述了国内外跑鞋中底材料的革新和鞋底结构轻量化设计的研究进展,并对马拉松跑鞋中底轻量化的研究趋势进行了展望,旨在为马拉松跑鞋中底材料的轻量化及结构创新设计提供新思路。

关键词：中底轻量化发泡材料结构优化跑鞋

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