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Comprehensive Characterization Model of Integrated Cotton fiber Quality Index

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Journal of Donghua University(English Edition) 2011年第4期28卷 379-383页

作者：刘贵杨瑜榕王明葵 YANG Shouren 于伟东 National Textile and Garment Quality Supervision Testing center(fujian) fujian fiber inspection Bureau CSIRO Materials Science & Engineering BelmontVictoria 3216Australia College of Textiles Donghua University

An integrated cotton fiber quality index(ICFQI) model with cotton fiber qualities which can directly express cotton fiber integrated quality and spinning yarn quality was studied.The fiber length,strength,Micronaire(fiber fineness and fiber maturity),uniformity of fiber length,and short fiber content are the pivotal indexes expressing ICFQI.All of the results above are the basic knowledge to build up the models of ICFQI.According to spinning consistency index(SCI),spinning strength and spinning yarn integrated quality,ICFQI was the best choice.As the methods of ICFQI had quite a lot of advantages like explicit mechanism,few independent variables.The integrated fiber quality index had a significant positive correlation with yarn strength and spinning consistency,significant negative correlation with yarn evenness and yarn thin places.In additional,the model of the relationship between ICFQI and SCI was established as:SCI= 0.2356·ICFQI+56.153.It was concluded that ICFQI value was the shared reference index for the testing of fiber inspection agency and the selection and distribution of raw cotton bales by textile mills.

关键词：纤维质量综合棉花纤维质量索引(ICFQI ) 全面描述模型

Supramolecular Self-assembly Behaviors of Asymmetric Diblock Copolymer Blends with Hydrogen Bonding Interactions between Shorter Blocks Modelled by Yukawa Potentials

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Chinese Journal of Polymer Science 2021年第11期39卷 1502-1509页

作者： Xu Zhang Jialiang Chen Lin Xu Tianxi Liu Innovation center for Textile Science and Technology State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China National Garment and Accessories Quality Supervision Testing center(fujian) Fujian Provincial Key Laboratory of Textiles Inspection TechnologyFujian Fiber Inspection CenterFuzhou 350026China Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China

We employed the extended self-consistent field theory to investigate the supramolecular self-assembly behaviors of asymmetric diblock copolymer blends(AB/B’C)with hydrogen bonding interactions between shorter B and B’blocks.The hydrogen bonding interactions are described by Yukawa potentials,where the hydrogen bonding donors and acceptors were modelled as two blocks smeared with opposite screened charges.The hierarchical microstructures with parallelly packed lamellae-in-lamellae(Lam)and 4.8.8 Archimedean tilting pattern(4.8.8)were observed at lower and higher hydrogen bonding density(θ),respectively.The hierarchy of Lam and 4.8.8 were demonstrated by the one-and two-dimensional density profiles and the underlying order of the large-length-scale and small-length-scale microstructures were also clarified.It was found that the 4.8.8 is favorable to the stronger hydrogen bonding density or interactions.Asθincreases,the microphase transition from Lam to 4.8.8 occurs atθ=0.34,which is mainly attributed to the optimization of the electrostatic energy and conformational entropy with sacrificing the interfacial energy.This work can provide a new strategy to understand the supramolecular self-assembly as well as the mechanism behind the formation of complex hierarchical microstructures.

关键词： Supramolecular self-assembly Hydrogen bond Block copolymer Self-consistent field theory Hierarchical microstructure

Properties and Structure of Multi-walled Carbon Nanotubes/Cellulose Composites fibers Using Ionic Liquid as Solvent

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Journal of Donghua University(English Edition) 2011年第6期28卷 591-594页

作者：蔡涛杨瑜榕王明葵张慧慧 National Textile and Garment Quality Supervision Testing center fiber inspection Bureau of fujian Province State Key Laboratory for Modification of Chemical fibers and Polymer Materials College of Materials Science and EngineeringDonghua University

To take advantage of cellulose material and prepare a kind of high performance fiber,multi-walled carbon nanotubes(MWNTs) were used as fillers to produce MWNTs/cellulose composite fibers using ionic liquid as solvent.The thermal properties,mechanical properties,and structure of the composite fibers were investigated.The wide angle X-ray diffraction(WAXD) measurements show that MWNTs/cellulose composite fibers have cellulose Ⅱ crystal structure.The results obtained from thermal gravimetric analysis(TGA) indicate that the addition of low nanotubes amounts leads to an increase in the degrade temperature.The tensile mechanical properties show that initial modulus and tensile strength considerably increase in the presence of nanotubes with a maximum for 66.7% and 22.7%.

关键词： carbon nanotubes ionic liquid composite fiber mechanical properties

Base-free oxidative esterification of 5-hydroxymethylfurfural to furan-2,5-dimethylcarboxylate over n-doped carbon-supported Co/Fe bimetallic catalyst under batch-operation or continuous-flow conditions

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Journal of Energy Chemistry 2022年第12期75卷 95-108,I0004页

作者： Weizhen Xie Binglin Chen Wenlong Jia Huai Liu Zheng Li Shuliang Yang Xing Tang Xianhai Zeng Yong Sun Xixian Ke Tianyuan Li Huayu Fang Lu Lin Xiamen Key Laboratory of Clean and High-valued Applications for Biomass Fujian Engineering and Research Center of Clean and High-valued Technologies for BiomassCollege of EnergyXiamen UniversityXiamen 361102FujianChina BiomassChem Group Faculty of Chemical EngineeringKunming University of Science and TechnologyKunming 650500YunnanChina Key Lab for Sport Shoes Upper Materials of fujian Province Fujian Engineering and Research Center for New Functional Fiber Materials(Fujian Huafeng New Material Co.Ltd.Putian Dakai New Material Co.Ltd.)Putian 351144FujianChina

Developing an efficient and easily available catalyst for the selective conversion of biomass-derived 5-hydroxymethylfurfural(HMF)into furan-2,5-dimethylcarboxylate(FDMC),a valuable biomass-based monomer,remains a high demand but formidable challenge.Herein,a facile strategy for the synthesis of N-doped carbon-supported Co/Fe bimetallic catalyst(CoFe-NC)was developed,which provided an outstanding FDMC yield of 93%in a batch reactor(base-free,80℃,2 bar O_(2),4 h).Interestingly,CoFe-NC also gave a high FDMC yield of 91%under continuous-flow conditions for 80 h(5 bar O_(2),80℃,GHSV 1320 h^(-1),LHSV 0.6 h^(-1),base-free).Notably,it is the first time that a non-noble catalyst gave such a high FDMC yield under continuous-flow conditions.The introduction of Fe could greatly improve both the electron intensity of Co-N_(x)species and basicity of the catalyst,which endowed CoFe-NC with improved O_(2)activation capacity and enhanced dehydrogenation activity for the oxidation-esterification of HMF.This work delineates the efficient strategy on the construction of N-doped carbon-supported non-noble catalyst,which might open a new avenue for developing highly efficient catalyst for FDMC production.

关键词： 5-Hydroxymethylfurfural Furan-2,5-dimethylcarboxylate Oxidation-esterification Catalysis Co-N_(x)sites

Comparative analysis of population genetic structure of Potato virus Y from China and Japan

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Comparative analysis of population genetic structure of Pota...

Energy Consumption and Erosion Mechanism of Polyester fiber Reinforced Cement Composite in Wind-blown Sand Environments

中国植物病理学会2015年学术年会

作者： GAO Fang-luan ZOU Wen-chao SHEN Jian-guo XIE Lian-hui ZHAN Jia-sui Key Laboratory of Plant Virology of fujian Province Institute of Plant VirologyFujian Agriculture and Forestry University inspection & Quarantine Technology center Fujian Exit-Entry Inspection and Quarantine Bureau

The PI and CP sequences of Potato virus Y（PVY） isolates from China and Japan were analyzed comparatively to investigate the main evolutionary mechanisms responsible for genetic dynamics.Recombination analyses showed that 27 recombinants were found among Chinese isolates in PI sequences,whereas four Japanese isolates and one Chinese isolate were identified as recombinants in CP sequences.Phylogenetic analyses indicated that PVY isolates have two major clades,the pairwise population differentiation between clade groups of isolates and between geographic isolates were significant,indicating a very great phylogenetic and spatial structure of the pathogen.Also,an extended Bayesian skyline plot（EBSP） analysis suggested that Chinese population had expanded after experiencing a severe bottleneck.Codon position 5 in the N clade of P1 and position 1 in the O clade of CP were under slight positive selection.Taken together the study suggested that there was a significant genetic variation in PVY isolates derived from China and Japan.

关键词： Potato virus Y Population differentiation Phylogeny Recombination Positive selection

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Journal of Wuhan University of Technology(Materials Science) 2022年第4期37卷 666-676页

作者：郝贠洪刘艳晨 LI Yonggui GAO Feng School of Science Inner Mongolia University of TechnologyHohhot 010051China The Inner Mongolia Key Laboratory of Civil Engineering Structure and Mechanics Fuzhou 350108China The Inner Mongolia Autonomous Region Construction inspection and Appraisal and Safety Assessment Engineering Technology Research center Hohhot 010051China fujian Key Laboratory of Novel Functional Textile fibers and Materials Minjiang UniversityHohhot 010051China School of Civil Engineering Inner Mongolia University of TechnologyHohhot 010051China

Considering the economic and environmental benefits associated with the recycling of polyester(PET)fibres,it is vital to study the application of fibre-reinforced cement composites.According to the characteristics of the wind-blown sand environment in Inner Mongolia,the erosion resistance of the polyester fibre-reinforced cement composites(PETFRCC)with different PET fibre contents to various erosion angles,velocities and sand particle flows was investigated by the gas-blast method.Based on the actual conditions of sandstorms in Inner Mongolia,the sand erosion parameters required for testing were calculated by the similarity theory.The elastic-plastic model and rigid plastic model of PETFRCC and cement mortar were established,and the energy consumption mechanism of the model under particle impact was analyzed.The experimental results indicate that the microstructure of PETFRCC rafter hydration causes a spring-like buffering effect,and the deformation of PETFRCC under the same impact load is slightly smaller than that of cement mortar,and the damage mechanism of PETFRCC is mainly characterized by fiber deformation and slight brittle spalling of matrix.And under the most unfavorable conditions of the erosion,the erosion rate of 0.5PETFRCC is about 57.69%lower than that of cement mortar,showing better erosion resistance.

关键词： wind-blown sand environment erosion resistance polyester fibre-reinforced cement composite energy consumption mechanism erosion mechanism

Oxygen-vacancy-rich MnOx supported RuOx for efficient base-free oxidation of 5-hydroxymethylfurfural and 5-methoxymethylfurfural to 2,5-furandicarboxylic acid

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Journal of Energy Chemistry 2024年第8期95卷 670-683页

作者： Jiali Wu Weizhen Xie Yining Zhang Xixian Ke Tianyuan Li Huayu Fang Yong Sun Xianhai Zeng Lu Lin Xing Tang Xiamen Key Laboratory of Clean and High-valued Applications for Biomass Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass College of Energy Xiamen University Key Lab for Sport Shoes Upper Materials of fujian Province Fujian Engineering and Research Center for New Functional Fiber Materials(Fujian Huafeng New Material Co.Ltd.Putian Dakai New Material Co. Ltd.)

2,5-Furandicarboxylic acid(FDCA) is a promising biomass-derived polymeric monomer that serves as an attractive alternative to terephthalic acid derived from fossil resources. However, the green and efficient production of FDCA through the oxidation of 5-hydroxymethylfurfural(HMF) and its derivatives is still rudimentary under base-free conditions. In this work, oxygen-vacancy-rich Mn Oxwas prepared and displayed a strong adsorption and anchoring ability to Ru species that mainly exposed the(2 1 0) plane of RuO2, bringing about highly dispersed and active interfacial Ru-O-Mn structures. Experimental results and density functional theory calculations confirm that these above features greatly facilitate the adsorption/activation of oxygen and the dehydrogenation-oxidation of HMF/5-methoxymethylfurfural(MMF),which enables an efficient FDCA production under base-free and mild conditions. Notably, a desirable FDCA yield of 86.56% was still obtained from concentrated HMF(10 wt%) under base-free conditions over oxygen-vacancy-rich Mn Oxsupported Ru Ox(1.0 MPaO2, 120 °C, 6 h). This work delineates a facile catalyst preparation strategy for HMF/MMF oxidation, and might open a new avenue for the green synthesis of FDCA under base-free conditions.

关键词： 2,5-Furandicarboxylic acid 5-Hydroxymethylfurfural 5-Methoxymethylfurfural Base-free oxidation Oxygen-vacancy-rich

De novo assembly of chloroplast genomes of Corchorus capsularis and C.olitorius yields species-specific InDel markers

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The Crop Journal 2021年第1期9卷 216-226页

作者： Shusheng Fang Liemei Zhang Jianmin Qi Liwu Zhang Key Laboratory of Ministry of Education for Genetics Breeding and Multiple Utilization of Crops/Fujian Provincial Key Laboratory of Crop Breeding by DesignCollege of AgricultureFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Experiment Station of Agriculture and Rural Affairs of Ministry for Jute and Kenaf in Southeast China/fujian Public Platform for Germplasm Resources of Bast fiber Crops/fujian International Science and Technology Cooperation Base for Genetics Breeding and Multiple Utilization Development of Southern Economic CropsFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina center for Genomics and Biotechnology Haixia Institute of Science and TechnologyFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina

Jute(Corchorus spp.)is a member of the Malvaceae family,which comprises more than 100 species.The systematic positions of jute species have remained unsettled.Chloroplasts are maternally inherited and their genomes are widely used for plant phylogenetic studies.In the present study,the chloroplast genomes of Corchorus capsularis and C.olitorius were assembled,with sizes of respectively 161,088 and 161,766 bp.Both genomes contained 112 unique genes(78 protein-coding,four rRNA,and 30 tRNA genes).Four regionswith high variation between the two species were located in single-copy rather than inverted-repeat regions.A total of 66 simple sequence repeats(SSRs)were identified in the C.capsularis chloroplast genome and 56 in that of C.olitorius.Comparison of the two chloroplast genome sequences permitted the evaluation of nucleotide variation including 2417 single-nucleotide polymorphisms sites and 294 insertion or deletion sites,of which one marker(cpInDel 205)could discriminate the two jute species.Comparison of the C.capsularis and C.olitorius chloroplast genomeswith those of other species in theMalvaceae revealed breakpoints in the accD locus,which is involved in fatty acid synthesis,in C.capsularis and C.olitorius.This finding suggests that genes from the chloroplast genomemight have been transferred to the nuclear genome in some Corchorus species.This hypothesis was supported by synteny analysis of the accD region among the nuclear,chloroplast,and mitochondrial genomes.To our knowledge,this is the first report of the assembled chloroplast genome sequences of C.capsularis and C.olitorius.C.capsularis and C.olitorius are closely related to Gossypium species and there are abundant microstructure variations between these two genera.These results will expand our understanding of the systematics of species in the Malvaceae.

关键词： Jute Corchorus Genome Chloroplast Insertion or deletion

Degradation of tetracycline by immobilized laccase and the proposed transformation pathway

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Degradation of tetracycline by immobilized laccase and the p...