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Preparation and Properties of Eco-Friendly Aerated Concrete Utilizing High-Volume Fly Ash with MgO and CaO Activators

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Journal of Renewable Materials 2022年第12期10卷 3335-3350页

作者： Xiaoling Qu Xingshuo Yang Siqi li Changan Tian Zaibo Li Zhiguang Zhao School of Chemistry and Civil Engineering shaoguan university Shaoguan512005China

The associated MgO in limestone is believed to affect the volume stability of cementitious materials at room tem-perature,which limits the utilization of low grade *** this study,MgO was used as an alkali activator instead of partial CaO to prepare the aerated concrete under hydrother mal *** expansion process was studied to evaluate the influence of the raw materials on the gas forming stability of the *** pore structure(porosity,pore size and its distribution)was analyzed by the image *** physic mechanical properties(density,strength,thermal properties)of concrete with the addition of MgO were comprehensively ***,the mineral compositions and morphology of the hydration products were analyzed to demonstrate the infuence mechanism of MgO on the mechanical *** results show that the final expansion rate of the slurry decreases with MgO content.A reasonable MgO content,ie,MgO/(MgO+CaO)<20%,con-tributes to improve the compressive strength,attributing to an increased reaction rate to C-S-H gel and *** addition of MgO causes the thermal conductivity and specific heat to *** pore structure is mainly related to the amount of air entraining *** study has a significance for the further utilization of magnesium-rich carbonates in the autoclaved building products.

关键词： Fly ash aerated concrete,strength thermal properties pore structure

Removal of the main inflorescence to induce reflowering of loquat

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Horticultural Plant Journal 2022年第1期8卷 35-43页

作者： Jiangrong Peng Wenkun Li Yuan Yuan Zhiqiang Han Yunpeng Cao Muhammad Qasim Shahid Zhike Zhang Yongshun Gao Shunquan Lin Yuanyuan Jiang Henry Fok College of Biology and Agriculture Shaoguan UniversityShaoguanGuangdong 512005China State key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of HorticultureSouth China Agricultural UniversityGuangzhou 510642China The key Laboratory of Cultivation and Protection for Non-wood Forest trees Ministry of EducationCentral South University of Forestry and TechnologyChangsha 410004China College of Agriculture South China Agricultural UniversityGuangzhou 510642China Beijing Engineering Research Center for Strawberry Beijing 100093China Beijing Academy of Forestry and Pomology Sciences Beijing 100093China

Loquat(Eriobotrya japonica Lindl.)is an evergreen fruit tree species of the Rosaceae,and its unique flowering time greatly hinders its *** explore the artificial regulation of loquat flowering time,we removed the main inflorescence(by cutting it)to induce *** different loquat tree cultivars with different stages,the inflorescence was removed by cutting the main floral axis at two alternative positions:the upper or the lower position beneath the inflorescence,and it was found that the proportion of reflowering resulting from removing the upper position of the main floral axis of yellow-flesh loquat cultivars during the full-bloom stage was the *** addition,compared with those of the normal-growing panicles,the number of flower buds and branch axes of the reflowering panicles decreased significantly after ***,these newly produced inflorescences flowered 2–4 months later than normal-growing inflorescences did,effectively prolonging both the flowering and fruiting *** addition,qRT-PCR results showed that EjFT1,EjFT2,EjAP1–1 and EjAP1–2 were highly expressed in the floral *** findings highlighted a new method for extending the production cycle of loquat and provided a reference for the flowering regulation of loquat and other economically important fruit tree species.

关键词： Eriobotrya japonica Reflowering Flowering time Cutting Production cycle

Exact solutions and localized excitations of a (3+1)-dimensional Gross-Pitaevskii system

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Chinese Physics B 2012年第7期21卷 113-119页

作者：费金喜郑春龙 School of Physics and Electromechanical Engineering Shaoguan University Faculty of Science Lishui University Institute of Applied Mathematics and Mechanics Shanghai University

Periodic wave solutions and solitary wave solutions to a generalized （3＋1）-dimensional Gross Pitaevskii equation with time-modulated dispersion, nonlinearity, and potential are derived in terms of an improved homogeneous balance principle and a mapping approach. These exact solutions exist under certain conditions via imposing suitable constraints on the functions describing dispersion, nonlinearity, and potential. The dynamics of the derived solutions can be manipulated by prescribing specific time-modulated dispersions, nonlinearities, and potentials. The results show that the periodic waves and solitary waves with novel behaviors are similar to the similaritons reported in other nonlinear systems.

关键词： Gross-Pitaevskii systeln mapping approach exact solution localized excitation

Functional analysis of a novel C-glycosyltransferase in the orchid Dendrobium catenatum

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Horticulture Research 2020年第1期7卷 1426-1443页

作者： Zhiyao Ren Xiaoyu Ji Zhenbin Jiao Yingyi Luo Guo-Qiang Zhang Shengchang Tao Zhouxi Lei Jing Zhang Yuchen Wang Zhong-Jian Liu Gang Wei School of Pharmaceutical Sciences Guangzhou University of Chinese MedicineGuangzhou 510006China Shantou university Medical College Shantou 515041China State key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China university of Chinese Academy of Sciences Beijing 100049China Shenzhen key Laboratory for Orchid Conservation and Utilization The National Orchid Conservation Center of China and The Orchid Conservation and Research Center of ShenzhenShenzhen 518114China Department of Pharmacy Sun Yat-Sen Memorial HospitalSun Yat-Sen UniversityGuangzhou 510120 GuangdongChina shaoguan Institute of Danxia Dendrobium Officinale Shaoguan 512005China key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization College of Landscape ArchitectureFujian Agriculture and Forestry UniversityFuzhou 350002China Henry Fok College of Biology and Agriculture Shaoguan UniversityShaoguan 512005China

Flavonoids,which are a diverse class of phytonutrients,are used by organisms to respond to nearly all abiotic stresses and are beneficial for human ***,used during the last step of flavonoid biosynthesis,is important in flavonoid ***,little is known about glycosyltransferase in the orchid Dendrobium catenatum(***).In this study,we isolated a novel C-glycosyltransferase(designated DcaCGT)from the orchid *** by identifying and analyzing 82 putative genes in the GT1 *** could specifically catalyze not only di-C-glycosylation but also *** from the normal function of catalyzing 2-hydroxynaringenin and phloretin to the respective di-C-glycosides,DcaCGT also catalyzes apigenin to *** metabolic profiling of the substrates(2-hydroxynaringenin,phloretin,and apigenin)and products(vitexin,isovitexin,vicenin-2,nothofagin,3’,5’-di-C-glucosylphloretin,and cosmosiin)in different tissues showed that vicenin-2 was the most abundant product of this novel *** was detected in flowers and flower *** also established that DcaCGT functions expanded throughout the evolution of *** OGT activity may help *** resist drought *** study illustrates the function,origin,and differentiation of DcaCGT and provides insights into glycosylation and molecular propagation processes,which can be used to improve the production of flavonoids by the cultivated medicinal plant ***.

关键词： flowers expanded drought

Exact projective solutions of a generalized nonlinear Schrdinger system with variable parameters

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Chinese Physics B 2012年第7期21卷 120-124页

作者：郑春龙李银 School of Physics and Electromechanical Engineering Shaoguan University School of Mathematics and Information Science Shaoguan University

A direct self-similarity mapping approach is successfully applied to a generalized nonlinear Schroedinger （NLS） system. Based on the known exact solutions of a self-similarity mapping equation, a few types of significant localized excitation with novel properties are obtained by selecting appropriate system parameters. The integrable constraint condition for the generalized NLS system derived naturally here is consistent with the known compatibility condition generated via Painleve analysis.

关键词： nonlinear Schroedinger system self-similarity mapping approach exact solution localizedexcitation