检索结果-南通市图书馆

A Class of Constacyclic Codes over Ring R+vR

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2016年第3期29卷 805-813页

作者： huang lei ZHU Shixin School of Mathematics Hefei University of Technology

By constructing a Gray map, a class of constacyclic codes over ring R = R＋ vR is studied. Using cyclic codes and negacyclic codes of length p^s over ring R, the structure of （1 - 2v）-constacyclic codes and dual codes of length p^s over ring R are given, the Gray images of （1 - 2v）-constacyclic codes in a particular case are also studied. It is shown that linear codes of length pS over ring R are （1 -2v）-constacyclic codes if and only if their Gray images are distance-invariant cyclic codes of length 2p^s over ring R.

关键词： Constacyclic code cyclic code dual code Gray map.

Effect of hot rolling and cooling process on microstructure and properties of 2205/Q235 clad plate

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2018年第11期25卷 1113-1122页

作者： Meng Yan jing-na Sun Hua-gui huang lei Chen Ke Dong Zhen-ye Chen National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University Qinhuangdao 066004HebeiChina China National Heavy Machinery Research Institute Co. Ltd.Xi'an 710032ShaanxiChina HBIS GROUP Central Iron and Steel Research Institute Shijiazhuang 050023HebeiChina

The 2205/Q235 clad plate was fabricated by vacuum hot rolling with symmetrical assembling pattern of Q235/2205/2205/ *** flow stress behavior and processing map of 2205 duplex stainless steel (DSS)were investigated by hot compressive tests on a Gleeble-3800 ***,thermal-mechanical coupled nonlinear finite element models of vacuum hot rolling and subsequent cooling process were *** the simulation results,the influence of rolling reduction and rolling speed on hot deformation state of 2205 DSS in the assembled slab was disclosed and the optimal rolling parameters were ***,the cooling rate of 2205 DSS under different cooling conditions and thicknesses of the clad plate was *** to the numerical simulation results,pilot experiments were successfully carried out on a laboratory *** material universal testing machine,optical microscope,scanning electron microscope and energy-dispersive spectrometer were used to evaluate the mechanical properties and microstructure of bonding interface and 2205 DSS matrix for different rolling reduction and cooling *** results showed that with symmetrical assembling pattern,the approximate thermodynamic conditions can be established for 2205 DSS to avoid cracks in hot rolling *** the rolling reduction increased from 10 to 40%,the shear strength of the bonding interface is increased from 120 to 530 MPa,and the uniform two-phase microstructure of 2205 DSS and satisfactory' mechanical properties can be obtained with cooling rate higher than 10℃/s between 1050 and 500℃ after rolling.

关键词： 2205/Q235 clad plate 2205 duplex stainless steel Vacuum hot rolling Finite element method Bonding interface Dual-phase scale

Microstructure Evolution and Mechanism of Strength Development of Fly Ash Paste

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

Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 152-163页

作者： MA Shuzhao WU Shunchuan huang Mingqing CHENG Haiyong JIANG Guanzhao NIU Yonghui LIU Zemin SUN Wei Faculty of Land Resources Engineering Kunming University of Science and TechnologyKunming 650093China Zijin School of Ge-ology and Mining Fuzhou UniversityFuzhou 350108China

Three types of activators such as sodium hydroxide,calcium oxide and triethanolamine(TEA)are used to establish different activation environments to address the problems associated with the process of activating fly ash *** conducted mechanical tests and numerical simulations to understand the evolution of microstructure,and used environmental scanning electron microscopy(ESEM)and energy dispersive spectroscopy(EDS)techniques to analyze the microenvironments of the *** mechanical properties of fly ash paste under different activation conditions and the changes in the microstructure and composition were *** results revealed that under conditions of low NaOH content(1%-3%),the strength of the sample increased *** the content exceeded 4%,the rate of increase in strength *** on the results,the optimal NaOH content was identified,which was about 4%.A good activation effect,especially for short-term activation(3-7 d),was achieved using TEA under high doping *** activation effect was poor for long-term strength after 28 *** CaO content did not significantly affect the degree of activation *** maximum effect was exerted when the content of CaO was 2%.The virtual cement and concrete testing laboratory(VCCTL)was used to simulate the hydration process,and the results revealed that the use of the three types of activators accelerated the formation of Ca(OH)_(2) in the *** activators also corroded the surface of the fly ash particles,resulting in a pozzolanic *** active substances in fly ash were released efficiently,and hydration was *** pores were filled with hydration products,and the microstructure changed to form a new frame of paste filling that helped improve the strength of fly ash paste.

关键词： paste filling fly ash activator unconfined compressive strength microstructure hydration simulation

Dirac Cohomology and Character Lifting

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

Acta Mathematica Sinica,English Series 2021年第4期37卷 525-537页

作者： jing Song huang Department of Mathematics Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARP.R.China

The endoscopic transfer factor is expressed as difference of characters for the even and odd parts of the spin modules,or Dirac index of the trivial *** lifting of tempered characters in terms of index of Dirac cohomo... 详细信息

关键词： Dirac cohomology Dirac series cubic Dirac operators endoscopic transfer character lifting

Bioinformatics analyses of differentially expressed genes associated with spinal cord injury:a microarray-based analysis in a mouse model

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2019年第7期14卷 1262-1270页

作者： lei Guo jing Lv Yun-Fei huang Ding-Jun Hao Ji-Jun Liu Department of Spinal Surgery Honghui HospitalXi'an Jiaotong University Department of Clinical Laboratory Honghui HospitalXi'an Jiaotong University

Gene spectrum analysis has shown that gene expression and signaling pathways change dramatically after spinal cord injury,which may affect the microenvironment of the damaged *** analysis provides a new opportunity for investigating diagnosis,treatment,and prognosis of spinal cord ***,differentially expressed genes are not consistent among studies,and many key genes and signaling pathways have not yet been accurately ***5296 was retrieved from the Gene Expression Omnibus *** expressed genes were obtained using R/Bioconductor software(expression changed at least two-fold;P < 0.05).Database for Annotation,Visualization and Integrated Discovery was used for functional annotation of differentially expressed genes and Animal Transcription Factor Database for predicting potential transcription *** resulting transcription regulatory protein interaction network was mapped to screen representative genes and investigate their diagnostic and therapeutic value for *** total,this study identified 109 genes that were upregulated and 30 that were downregulated at 0.5,4,and 24 hours,and 3,7,and 28 days after spinal cord *** number of downregulated genes was smaller than the number of upregulated genes at each time *** for Annotation,Visualization and Integrated Discovery analysis found that many inflammation-related pathways were upregulated in injured spinal ***,expression levels of these inflammation-related genes were maintained for at least 28 ***,399 regulation modes and 77 nodes were shown in the protein-protein interaction network of upregulated differentially expressed *** the 10 upregulated differentially expressed genes with the highest degrees of distribution,six genes were transcription *** these transcription factors,ATF3 showed the greatest ***3 was upregulated within 30 minutes,and its expression levels remained high at28 days after spin

关键词： nerve regeneration spinal cord injury differentially expressed genes bioinformatics analyses Database for Annotation,Visualization and Integrated Discovery analysis inflammation Kyoto Encyclopedia of Genes and Genomes pathway microarray transcription factors neural regeneration

Preparation of antifouling ultrafiltration membranes from copolymers of polysulfone and zwitterionic poly(arylene ether sulfone)s

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2022年第9期35卷 100-110页

作者： Sihan huang Yaohan Chen Xue Wang jing Guo Yonggang Li lei Dai Shenghai Li Suobo Zhang Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Science and Technology of China Hefei 230026China

The past few decades have witnessed rapid gains in our demands of antifouling membranes such as water purification membranes and hemodialysis membranes.A variety of methodologies have been proposed for improving the antifouling performance and the hemocompatibility of the *** this study,a series of copolymers(PSF-PESSB)containing polysulfone(PSF)and poly(arylene ether sulfone)bearing pendant zwitterionic sulfobetaine groups(PESSB)were prepared via one-pot ***,the ultrafiltration(UF)membranes were prepared from different zwitterion-containing *** prepared membranes showed high thermal stability and mechanical ***,it also displayed attractive antifouling performance and blood *** with the original PSF membrane,the amount of protein absorption on the modified membrane was reduced;the flux recovery ratio and the resistance to blood cells were significantly *** results of this work suggest that PSF-PESSB membranes are expected to be applied in blood *** introduction of zwitterion-containing polymers to membranes paves ways for developing advanced hemodialysis technologies for crucial process.

关键词： Ultrafiltration membranes Polysulfone Zwitterion Antifouling Blood compatibility

Boehmite-supported CuO as a catalyst for catalytic transfer hydrogenation of 5-hydroxymethylfurfural to 2,5-bis(hydroxymethyl)furan

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2023年第4期17卷 415-424页

作者： Zexing huang Zhijuan Zeng Xiaoting Zhu Wenguang Zhao jing lei Qiong Xu Yongjun Yang Xianxiang Liu National&Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceHunan Normal UniversityChangsha 410081China Chenzhou Gao Xin Material Co. Ltd.Chenzhou 423000China

2,5-bis(hydroxymethyl)furan(BHMF)is an important monomer of *** oxygen-containing rigid ring structure and symmetrical diol functional group establish it as an alternative to petroleum-based monomer with unique advantages for the prodution of the degradable bio-based polyester ***,we prepared a boehmite-supported copper-oxide catalyst for the selective hydrogenation of 5-hydroxymethylfurfural into BHMF via catalytic transfer hydrogenation(CTH).Further,ethanol successfully replaced conventional high-pressure hydrogen as the hydrogen donor,with up to 96.9% BHMF selectivity achieved under suitable *** characterization and factor investigations,it was noted that CuO is crucial for high BHMF ***,kinetic studies revealed a higher by-product activation energy compared to that of BHMF,which explained the influence of reaction temperature on product *** establish the catalyst structure-activity correlation,a possible mechanism was *** copper-oxide catalyst deactivated following CTH because ethanol reduced the CuO,which consequently decreased the active ***,calcination of the catalyst in air recovered its *** results will have a positive impact on hydrogenation processes in the biomass industry.

关键词： biomass 5-hydroxymethylfurfural 2,5-bis(hydroxymethyl)furan transfer hydrogenation catalysis

A FRET-Based Ratiometric H_(2)S Sensor for Sensitive Optical Molecular Imaging in Second Near-Infrared Window

在线全文

学校读者我要写书评

暂无评论

Research 2024年第3期2023卷 671-684页

作者： Shan lei Kejia Jiang Chenqing Zhang Wei Sun Yuantao Pan Dong Wang Peng huang jing Lin Marshall Laboratory of Biomedical Engineering International Cancer CenterShenzhen Key Laboratory of Tumor Visualization Molecular MedicineLaboratory of Evolutionary Theranostics(LET)School of Biomedical EngineeringShenzhen University Medical SchoolShenzhen UniversityShenzhen 518055China. Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China.

Second near-infrared(NIR-II)window optical molecular imaging kicks off a new revolution in high-quality imaging in vivo,but always suffers from the hurdles of inevitable tissue autofluorescence background and NIR-II probe ***,we prepare a Förster resonance energy transfer-based ratiometric NIR-II window hydrogen sulfide(H_(2)S)sensor through the combination of an H_(2)S-responsive NIR-II cyanine dye(acceptor,LET-1055)and an H_(2)S-inert rhodamine hybrid polymethine dye(donor,Rh930).This sensor not only exhibits high sensitivity and selectivity,but also shows rapid reaction kinetics(~20 min)and relatively low limit of detection(~96 nM)toward H_(2)S,allowing in vivo ratiometric NIR-II fluorescence imaging of orthotopic liver and colon tumors and visualization of the drug-induced hepatic H_(2)S *** findings provide the potential for advancing the feasibility of NIR-II activity-based sensing for in vivo clinical diagnosis.

关键词： H_ Infrared kinetics

Laser assisted phase transformation of carbon-based transition metal oxide electrode for high-performance supercapacitor application

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

Science China Chemistry 2025年

作者： Mingzhen Xiu Jianghong Zhang Yu Lu Xun Cao Kang huang Siyu Zhu Bowei Zhang Yu Liang Chunwang Zhao Junsheng Wu Yizhong huang School of Materials Science and Engineering Nanyang Technological University Energy Research Institute Interdisciplinary Graduate Programme Nanyang Technological University Institute of Sustainability for Chemicals Energy and Environment Agency for Science Technology and ResearchSingapore Institute of Advanced Materials and Technology University of Science and Technology Beijing School of Materials Science and Technology Shenyang University of Chemical Technology School of Materials Science and Hydrogen Energy Foshan University

Transitional metal oxides have a wide range of applications due to their superior *** enhanced performance of metal oxide relies on their desirable oxidation states,which is challenging to achieve and requires complex *** study demonstrates a facile strategy enabling rapid phase transformation of transition metal *** approach involves synthesis of a tetragonal Mn3O4/carbon cloth composite using the liquid plasma discharge deposition （LPDD） technique,followed by laser irradiation with the presence of ethylene glycol under an N2gas *** resulting face-centered cubic MnO/carbon cloth electrode exhibits an excellent capacitance of 1,125 F g-1at 2 A g-1,with remarkable capacitance retention of 95%after10,000 *** approach can be extended to other transition metals including Co,Cu,Cr,Fe,Ni,and *** simulations reveal the significance of ethylene glycol and the underlying mechanism associated with the phase transformation of transition metal *** present study offers a powerful technique for the phase transformation of transition metal oxide which can guide the development of new electrode materials with enhanced electrochemical properties for high-performance energy storage applications.

关键词：