检索结果-南通市图书馆

Electrochemical exfoliation of two-dimensional layered black phosphorus and applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2020年第10期29卷 365-374页

作者： Le Li Dan Zhang jianping deng Yuchun Gou Junfei Fang Shaanxi Key Laboratory of Industrial Automation School of Mechanical EngineeringShaanxi University of TechnologyHanzhong 723001ShaanxiChina Shaanxi Province Key Laboratory of Catalytic Foundation and Application School of Chemistry and Environment ScienceShaanxi University of TechnologyHanzhong 723001ShaanxiChina

With the discovery of graphene,black phosphorus(BP)has been rediscovered as a two-dimensional(2 D)layered *** its first preparation in 2014,2 D BP has elicited immense interest,and has exhibited excellent properties,such as distinct pleated structures in layers,adjustable direct bandgap,high carrier mobility,moderate on/off ratio,large specific surface area,and various interesting in-layer ***,the realization of these excellent properties depends on the preparation of highquality 2 D BP *** exfoliation methods are typically performed under mild conditions,thus,these methods are convenient,controllable,and can produce high-quality 2 D BP *** review summarizes research progress in BP sheets preparation through anodic,cathodic,and electrolyte exfoliation in recent *** exfoliating methods affect the quality of 2 D BP ***,possible exfoliating mechanisms and the potential applications of different exfoliating methods are summarized and discussed in ***,the shortcomings of existing research on electrochemical exfoliation are presented,and suggestions and prospects for future research on the electrochemical exfoliation of 2 D BP are proposed.

关键词： Black phosphorus Electrochemical exfoliation 2D BP sheets Anode exfoliation Cathodic exfoliation

Multi‑color Tunable and White Circularly Polarized Luminescent Composite Nanofibers Electrospun from Chiral Helical Polymer

在线全文

学校读者我要写书评

暂无评论

Advanced Fiber Materials 2022年第6期4卷 1632-1644页

作者： Pengpeng Li Xiaobin Gao Biao Zhao Kai Pan jianping deng State Key Laboratory of Chemical Resource Engineering College of Materials Science and EngineeringBeijing University of Chemical Technology100029 BeijingChina College of Materials Science and Engineering Beijing University of Chemical Technology100029 BeijingChina

Circularly polarized luminescence(CPL)-active nanomaterials have attracted tremendous ***,it is still a big challenge to conveniently fabricate multi-color and white CPL-active nanomaterials on a large ***,a simple and scalable approach to achieve the above goals is *** CPL-active nanofibers are fabricated from chiral helical substituted polyacetylene,achiral fluorescent dyes and polyacrylonitrile via uniaxial electrospinning;the highest luminescence dissymmetry factor(glum)of the resulting nanofibers can reach 10^(−2).Furthermore,white CPL-active nanofibers are obtained by coaxial electrospinning,in which the resulting core-shell structure has excellent adjustability and can be utilized to physically isolate different fluorescent dyes to reduce energy transfer efficiency;therefore,stable white CPL emissions can be achieved with high g_(lum) values up to 10^(−3).Notably,the prepared white-emission CPL nanofibrous films show bright white circularly polarized light when coated on UV chips,demonstrating their future application in constructing low-cost and flexible light-emitting devices such as circularly polarized light-emitting diodes.

关键词： Chiral helical polymer Nanofiber Multi-color circularly polarized luminescence White-light emission

Enhancement of municipal sludge dewaterability by electrochemical pretreatment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2019年第1期31卷 98-104页

作者： Ke Xiao jianping deng Li Zeng Tao Guo Yan Gong Bo Yang Xu Zhao Huabo Duan College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation Shenzhen University State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Smart City Research Institute College of Civil Engineering Shenzhen University

Electrolysis is a promising technology to improve sludge dewaterability efficiently with negligible environmental impact. To intensify the electrolytic efficiency, the effect of electrolytes(NaCl, Na_2SO_4, NaNO_3, and NaClO_4) on electrolysis pretreatment of municipal sludge and its mechanisms was investigated using Ti/PbO_2 electrodes. The electrolytes,which enhanced the production of oxidative radicals, showed a significant synergetic effect in reducing the capillary suction time(CST) of sludge. NaCl was distinguished from the other electrolytes since it formed a large amount of active chlorine species, which oxidized the sludge cells to improve the sludge dewaterability. The surface morphologies as well as the soluble proteins and polysaccharides were analyzed to unravel the underlying mechanisms of sludge dewaterability. Additionally, an economic assessment showed that NaCl addition in the electrolysis pretreatment can be a suitable technique for enhancing municipal sludge dewaterability.

关键词： Municipal sludge Dewaterability Electrolysis Electrolyte Oxidative radical

Two-Step Preparation of Hierarchical Porous Carbon Materials Derived from Tannin for Use as an Electrode Material for Supercapacitors

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2023年第6期11卷 2631-2646页

作者： jianping deng Qianqian Zhang Yuling Lan Lingcong Luo Zimin Dai Zhonghang Lin Zhixin Lu Jiancheng Yuan Yiqi Fu Lu Luo Weigang Zhao College of Material Engineering Fujian Agriculture and Forestry UniversityFuzhou350002China Maritime College Zhejiang Ocean UniversityZhoushan316022China

The development and utilization of biomass and agroforestry processing byproducts for high-value applications have been an important topic in the field of renewable materials *** on this,a two-step microwave hydrothermal pre-carbonization and KOH activation method was proposed to synthesize tannin-based activated carbons with a high specific surface area,hierarchical pore structure,and good electrochemical *** microstructure,texture properties,and physicochemical characteristics were *** results show that the prepared tannin-based activated carbons presented a hierarchical pore structure(micro-and mesopores)with a specific surface area as high as 997.46 m^(3) g^(−1).The electrochemical analysis shows that the tannin-based activated carbons have good wettability and charge transfer *** the three-electrode system with 6 M KOH as the electrolyte,the active material TAC_(600-4) had a maximum specific capacitance of 171 F g^(−1)at 0.5 A g^(−1).As the current density increases to 10 A g^(−1),the specific capacitance can still be maintained at 149 F g^(−1),indicating a good rate ***,the specific surface area and pore size of tannin-based activated carbons can be effectively adjusted by the alkali/carbon ratio,making it a promising supercapacitor electrode material and providing a new method for the high-value development of tannins in the field of electrochemical energy storage.

关键词： Tannin biomass activated carbon microwave hydrothermal KOH activation supercapacitor

Prevalence and molecular characteristics of Listeria monocytogenes in cooked products and its comparison with isolates from listeriosis cases

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Medicine 2018年第1期12卷 104-112页

作者： Hong Wang Lijuan Luo Zhengdong Zhang jianping deng Yan Wang Yimao Miao Ling Zhang Xi Chen Xiang Liu Songsong Sun Bo Xiao Qun Li Changyun Ye Zigong Center for Disease Control and Prevention Zigong 643000 China State Key Laboratory of Infectious Disease Prevention and Control National Institute for Communicable Disease Control and Prevention Collaborative Innovation Center for Diagnosis and Treatment of lnfectious Diseases Chinese Center for Disease Control and Prevention Beijing 102206 China

This study aimed to investigate the prevalence and molecular characteristics ofListeria monocytogenes in cooked products in Zigong City, China. The overall occurrence of the L. monocytogenes in the ready-to-eat （RTE） shops and mutton restaurants surveyed was 16.2% （141/873）. An occurrence of 13.5% was observed in RTE pork, 6.5% in RTE vegetables, and more than 24.0% in either cooked mutton or cooked haggis. Serotype 1/2b （45.4%）, 1/2a （33.3%）, and 1/2c （14.2%） were the predominant types. By comparing the clonal complexes （CCs） based on multilocus sequence typing （MLST） of the L. monocytogenes from cooked foods in Zigong City and 33 listeriosis cases from different districts of China, CC87, CC9, CC8, and CC3 were showed to be prevalent in cooked products and CC87 and CC3 were the first two frequent types in the 33 clinic-source strains. All CC87 stains harbored the newly reported Listeria pathogenicity island 4 （LIPI-4） gene fragment ptsA, and all CC3 strains possessed the Listeria pathogenicity island 3 （LIPI-3） gene fragment llsX. These may increase the occurrence of the strains belonging to CC87 and CC3 in listeriosis cases in China and also underline the risk of infection owing to the consumption of the cooked products from Zigong. ST619 （serotype 1/2b） harbored both llsX and ptsA, indicating a potential hypervirulent sequence type in Zigong.

关键词： Listeria monocytogenes MLST LIPI-3 LIPI-4 RTE listeriosis

Shoot rot of Zizania latifolia and the first record of its pathogen Pantoea ananatis in China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第4期23卷 328-338页

作者： Zilan XIAO jianping deng Xiaojun ZHOU Liyan ZHU Xiaochan HE Jingwu ZHENG Deping GUO Jingze ZHANG Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects Institute of BiotechnologyZhejiang UniversityHangzhou 310058China Plant Protection and Plant Inspection Station of Jinyun County Jinyun 321401China Jinhua Academy of Agricultural Sciences Jinhua 321017China Department of Horticulture College of Agriculture and BiotechnologyZhejiang UniversityHangzhou 310058China

The aquatic grass Zizania latifolia grows symbiotically with the fungus Ustilago esculenta producing swollen structures called Jiaobai,widely cultivated in China.A new disease of *** was found in Zhejiang Province,*** lesions appeared on the leaf sheaths or sometimes on the leaves near the leaf *** lesions extended along the axis of the leaf shoots and formed long brown to dark brown streaks from the leaf sheath to the leaf,causing sheath rot and death of entire leaves on young *** pathogen was isolated and identified as the bacterium Pantoea ananatis,based on 16 S ribosomal RNA(r RNA)gene sequencing,multilocus sequence analysis(atp D(β-subunit of ATP synthase F1),gyr B(DNA gyrase subunit B),inf B(translation initiation factor 2),and rpo B(β-subunit of RNA polymerase)genes),and pathogenicity *** observations using scanning electron microscopy revealed that the bacterial cells colonized the vascular tissues in leaf sheaths,forming biofilms on the inner surface of vessel walls,and extended between vessel elements via the perforated *** achieve efficient detection and diagnosis of ***,species-specific primer pairs were designed and validated by testing closely related and unrelated species and diseased tissues of *** is the first report of bacterial sheath rot disease of *** caused by *** in China.

关键词： Zizania latifolia Phylogeny Pantoea ananatis Multilocus analysis Scanning electron microscopy Species-specific primers

在线全文

学校读者我要写书评

暂无评论

“以学生为本”:何以可能及如何实现

教育研究 2014年第6期35卷 67-72页

作者：邓建平宁波大学党委办公室

在高等教育规模快速扩张、教育质量亟待提升的今天,践行"以学生为本"教育理念,成为转变教育发展方式、提升高等教育质量的应有之义。然而,"以学生为本"从应然的可能向实然的可行顺利转化亟须正确的认识观、均衡的价值观和科学的方法论。... 详细信息

在高等教育规模快速扩张、教育质量亟待提升的今天,践行"以学生为本"教育理念,成为转变教育发展方式、提升高等教育质量的应有之义。然而,"以学生为本"从应然的可能向实然的可行顺利转化亟须正确的认识观、均衡的价值观和科学的方法论。"以学生为本"成为可能的基础,取决于有利于教师与学生之间、学校与学生之间共同发展、共同进步的制度架构及机制推动;在现实的高等教育背景下实现"以学生为本",需要坚持依据唯物辩证法的方法论认知、分析、调和及化解师生关系和校生关系中存在的兼容共存问题。

关键词：高等教育教育质量以学生为本价值观方法论

Optically active helical polymer-based microspheres:Preparation and applications

在线全文

学校读者我要写书评

暂无评论

Optically active helical polymer-based microspheres:Preparat...

基于灰色混沌神经网络的高新技术创新项目绩效评价

The 5th Symposium on Molecular Chirality of Chinese Chemical Society & International Chiral Meeting

作者： jianping deng Dongyue Zhang Ci Song Wantai Yang Beijing University of Chemical Technology Beijing 100029

＜正＞Artificial helical substituted polyacetylenes have been extensively investigated. Such polymers demonstrate remarkable potential applications in chiral recognition, chiral resolution,asymmetric catalysis,chiral sensors,*** prepared microspheres derived from substituted acetylenes via precipitation *** microspheres were obtained in high yield,regular spheric morphology and narrow

关键词： chiral microsphere helical polymer asymmetric catalysis enantiomer-selectively induced crystallization

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

学术交流 2008年第9期 109-113页

作者：邓剑平黑龙江广播电视大学哈尔滨150080

高新技术创新项目评价指标体系的设计应具有科学性、全面性、系统性、代表性、可行性和方便性等原则。根据这些原则建立了一套评价高新技术创新项目绩效的指标体系,即将灰色系统理论、混沌理论引入到传统的人工神经网络中,建立高新技术... 详细信息

高新技术创新项目评价指标体系的设计应具有科学性、全面性、系统性、代表性、可行性和方便性等原则。根据这些原则建立了一套评价高新技术创新项目绩效的指标体系,即将灰色系统理论、混沌理论引入到传统的人工神经网络中,建立高新技术创新项目绩效评价的灰色混沌神经网络模型,这种评价模型使评价结果更有效、更客观。

关键词：高新技术创新项目绩效评价指标体系灰色混沌神经网络