检索结果-南通市图书馆

The Applications of Vague Soft Sets and Generalized Vague Soft Sets

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2015年第4期31卷 977-990页

作者： ch.ng WAng An-jing qu School of Mathematics Northwest University

The problem of decision making in an imprecise environment has found paramount importance in recent years. In this paper, we define vague soft relation and similarity measure of vague soft sets. Using these definitions, some novel methods of object recognition from an imprecise multiobserver data has been presented. Moreover, we introduce the notion of generalized vague soft sets and study some of its properties. The similarity measure of generalized vague soft sets is also presented and an application of this measure in decision making problems has been shown.

关键词： soft sets vague sets vague soft sets vague soft relation similarity measure generalized vaguesoft sets

Big data compression processing and verification based on Hive for smart substation

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2015年第3期3卷 440-446页

作者： Zhijian qu Ge chEN School of Electrical&Electronic Engineering East China Jiaotong UniversityNanchang 330013China

The capacity and the scale of smart substation are expanding constantly,with the characteristics of information digitization and automation,leading to a quantitative trend of *** at the existing processing shortages in the big data processing,the query and analysis of smart substation,a data compression processing method is proposed for analyzing smart substation and *** results show that the compression ratio and query time of RCFile storage format are better than those of TextFile and *** query efficiency is improved for data compressed by Deflate,Gzip and Lzo compression *** results verify the correctness of adjacent speedup defined as the index of cluster *** also prove that the method has a significant theoretical and practical value for big data processing of smart substation.

关键词： Hive Smart substation Lossless compression

Acceptor-acceptor-type conjugated polymer semiconductors

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 2021年第8期30卷 364-387,I0008页

作者： Dunshuai qu Ting Qi Hui Huang School of chemical Sciences University of Chinese Academy of Sciences100049 BeijingChina College of Materials Science and Opto-Electronic Technology&Center of Materials Science and Optoelectronics Engineering&CAS Center for Excellence in Topological quantum Computation&CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences100049 BeijingChina

The rapid development of electronic devices such as organic field-effect transistors(OFETs)and solar cells makes the research and development of electronic transport materials *** acceptor-acceptortype(AàA-type)conjugated n-type polymer semiconductors have caught much attention due to the outstanding advantages on excellent electron-accepting capabilities,the precise adjustment of energy levels and the mass production at low fabrication *** article systematically reviews the polymerization methods of AàA-type polymers and the recent advancements applied in OFETs and polymer solar cells(PSCs).The analyses of the synthesis and the relationship between device performances and polymer molecular structures may provide a constructive guidance for the further development of highperformance n-type polymer materials.

关键词： Acceptor-acceptor-type(A-A-type) polymers Organic field-effect transistors(OFETs) Polymer solar cells(PSCs) Polymerization n-Type semiconductors

Bacterial Cellulose/Zwitterionic Dual-network Porous Gel Polymer Electrolytes with High Ionic Conductivity

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 596-605页

作者：侯朝霞 WAng Haoran qu chenying Liaoning Province Key Laboratory of Micro-nano Materials Research and Development School of Mechanical EngineeringShenyang UniversityShenyang 110044China

Bacterial cellulose(BC)was innovatively combined with zwitterionic copolymer acrylamide and sulfobetaine methacrylic acid ester[P(AM-co-SBMA)]to build a dual-network porous structure gel polymer electrolytes(GPEs)with high ionic *** dual network structure BC/P(AM-co-SBMA)gels were formed by a simple one-step polymerization *** results show that ionic conductivity of BC/P(AM-co-SBMA)GPEs at the room temperature are 3.2×10^(-2) S/cm@1 M H_(2)SO_(4),4.5×10^(-2) S/cm@4 M KOH,and 3.6×10^(-2) S/cm@1 M NaCl,*** active carbon(AC)as the electrodes,BC/P(AM-co-SBMA)GPEs as both separator and electrolyte matrix,and 4 M KOH as the electrolyte,a symmetric solid supercapacitors(SSC)(AC-GPE-KOH)was assembled and *** specific capacitance of AC electrode is 173 F/g and remains 95.0%of the initial value after 5000 cycles and 86.2%after 10,000 cycles.

关键词： bacterial cellulose zwitterion gel polymer electrolytes ionic conductivity dual-network structure

characterization of herbal powder blends homogeneity using near-infrared spectroscopy

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2014年第6期7卷 33-39页

作者： Wenlong Li Haibin qu Pharmaceutical Informatics Institute Zhejiang University Hangzhou 310058P.R.China

Homogeneity of powder blend is essential to obtain uniform contents for the tablets and ***-infrared(NIR)spectroscopy with fiber-optic probe was used as an on-line technique for monitoring the homogeneity of pharmaceutical blend during the blending process instead of the traditional techniques,such as high performance liquid chromatograph(HPLC)*** this paper NIRS with a SabIR difuse reflectance fiber optic probe was used to monitor the blending process of coptis powder and lactose(excipient)with different contents,and further qualitative methods,like similarity,moving block of standard deviation and mean square were used for calculation purposes with the ollected spectra after the pretreatment of multiplicative signal correction(MSC)and second *** spectrum was used for the wavelength *** different coptis were blended with lactose separately to validate the proposed method,and the blending process of "liu wei di huang"pill was also simulated in bottles to verify this method on multiple herbal *** overall results suggest that NIRS is a simple,efective and noninvasive technique can be sucssfuly applied to the determination of homogeneity in the herbal blend.

关键词： Near infrared spect roscopy traditional chinese medicine powder blend homnogeneity

Multicolor Luminescent Carbon Nanoparticles： Synthesis, Supramolecular Assembly with Porphyrin, Intrinsic Peroxidase-Like Catalytic Activity 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

Nano Research 2011年第9期4卷 908-920页

作者： Xiaohui Wang Konggang qu Bailu Xu Jinsong Ren Xiaogang qu Division of Biological Inorganic chemistry State Key Laboratory of Rare Earth Resource Utilization Laboratory of Chemical Biology Changchun Institute Of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 China Graduate School of the chinese Academy of Sciences Changchun Jilin 130022 China

Luminescent carbon nanoparticles （CNPs） are newcomers to the world of nanomaterials and have shown great impact in health and environmental applications as well as being promising building blocks for future nanodevices because of their fascinating photoluminescence and potential to serve as nontoxic replacements for traditional heavy-metals-based quantum dots. Herein, fluorescent CNPs have been prepared from candle soot by re fluxing with HNO3 and subsequently separated by a single centrifugation. The CNPs can be represented by the empirical formula C1Ho.677Oo.586No.o15Nao.069, and have a size of 20-100 nm, height of 3.0 nm, lifetime of 7.31 ns ＋ 0.06 ns and quantum yield of -1.7%. Further studies demonstrate that：（1）the as-prepared CNPs exhibit excellent stability in biological media and their luminescence intensity does not ch.nge with ionic strength or pH in the physiological and pathological range of pH 4.5-8.8; （2） CNPs can act as electron donors and transporters and porphyrin can assemble onto CNPs through electrostatic and ^-stacking interactions to form porphyrin-CNPs supramolecular composites; （3）CNPs have strong intrinsic peroxidase-like activity. Based on this intrinsic peroxidase activity, a simple, cheap, and highly selective and sensitive colorimetric and quantitative assay has been developed for the detection of glucose levels. This assay has been used to analyze real samples, such as diluted blood and fruit juice.

关键词： Carbon nanoparticles luminescence supramolecular assembly peroxidase biosensing

场域、资本与马克思主义在黑龙江地区的早期传播——以中东铁路为中心的考察

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

哈尔滨市委党校学报 2025年第1期 34-38页

作者：王迈曲晓溪中共黑龙江省委史志研究室哈尔滨150001

在近代以来救亡图存的语境下,黑龙江地区布尔什维克、铁路工人、知识分子以及中国共产党党员等群体同清政府、沙俄、军阀及侵华日军等势力进行抗争的实践空间,可以被视为动态的革命场域。中东铁路修筑所带来的经济、社会、文化及象征资... 详细信息

在近代以来救亡图存的语境下,黑龙江地区布尔什维克、铁路工人、知识分子以及中国共产党党员等群体同清政府、沙俄、军阀及侵华日军等势力进行抗争的实践空间,可以被视为动态的革命场域。中东铁路修筑所带来的经济、社会、文化及象征资本间的权力关系运作,搅动区域社会结构,开启铁路沿线地区的工业化、城市化和近代化进程,为马克思主义在黑龙江的广泛传播与具体实践提供重要展演空间。中国共产党以资本为实践工具,实现了从经济、文化、社会资本到符号资本的转化,完成了从权力网络边缘到中心的位移,夺取了中国革命的伟大胜利。

关键词：场域资本马克思主义中东铁路黑龙江地区

Function of Palm Fiber in Stabilization of Alluvial Clayey Soil in Yangtze River Estuary

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2021年第4期9卷 767-787页

作者： Jili qu Hao Zhu Department of Civil Engineering School of Environment and ArchitectureUniversity of Shanghai for Science and TechnologyShanghai200093China

Palm fiber is one of the favorable materials used in stabilization of soft soil in geotechnical engineering projects in recent years due to its nature of sustainability,no harm to the environment,biodegradability,availability and costeffectiveness in the context of widespread appeal from the world for returning to nature and protecting the earth our *** paper is aimed at exploring the mechanical performance of Shanghai clayey soil reinforced with palm *** unconfined compressive tests are carried out on samples treated with palm fibers of different lengths and contents,and the unconfined compressive strength(UCS),ductility rate(DR),secant modulus(SM),energy absorption capacity(EAC)and failure pattern(FP)of the reinforced and unreinforced samples have been analyzed with regard to their relationship with palm fiber contents and *** multiple regression,grey correlation and general correlation relationship analysis are applied to the resultant test data so as to obtain the mathematical and statistical equation of related soil *** has been concluded from the analysis that the unconfined compressive strength,ductility and energy absorption capacity of reinforced soil will increase with the increase in content and length of palm fiber,which are maximized when palm fiber content and length are 0.4%and 15 mm,*** the contrary,the secant modulus of reinforced soil decreases considerably with content and length of palm fiber as a ***,the failure pattern also ch.nges from brittle to ductile gradually with the content and length of palm *** data provided by the analysis of reinforced soil can be referred to and used for the related geotechnical engineering in the *** the mathematical model obtained from the statistical regression is significantly meaningful because it can be used to predict the soil performance without the need for doing the additional tests,with saving in cost and ***’s more,the applic

关键词： Palm fiber Shanghai clayey soil UCS EAC multiple regression analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

生物质光发酵制氢技术研究进展

现代化工 2025年第1期45卷 56-61页

作者：屈皓李玉霞刘玉香太原理工大学环境科学与工程学院山西太原030001 晋中学院化学化工系山西晋中030619

回顾了生物质光发酵制氢的最新研究进展,对生物质预处理技术、制氢过程优化和工艺整合进行了总结分析,在此基础上,从提升制氢效率同时降低能耗方面对生物质光发酵制氢技术的未来发展做出展望。

关键词：生物质制氢光发酵制氢生物质预处理过程优化