期刊：
SHS Web of Conferences,2023年167:02016-null ISSN：2416-5182
作者机构：
School of Architecture, Changsha University of science & Technology, Changsha, Hunan 410114, China;School of Transportation Engineering, Hunan Institute of Traffic Engineering, Hengyang, Hunan 410000, China;School of Civil Engineering, University of South China, Hengyang, Hunan 421001, China
关键词：
conference;proceedings;humanities;social
摘要：
This study analyzes the spatial genes of traditional villages by taking Zhang Guying village in northern Hunan Province as an example.Starting from the theory of heterogeneous isomorphism, we discover the methods and paths of identifying, presenting and translating the spatial genes of traditional villages in Hunan region.Through the gene identification extraction method, it analyzes the spatial and cultural genes of Zhang Guying village and obtains the genetic elements and composition of the traditional villages.Based on the design model of gene translation, the “Duanwu family” is systematically analyzed, and it can build a traditional village regeneration and development system.In view of this, his research relies on the application of “heterogeneous isomorphism” theory, which can be obtained from the gene translation method, isomorphic design model.It can promote the regenerative continuation of traditional villages and low-carbon ecological development.
作者机构：
[Li, Ming; Zhou, Yi-Liang; Li, M; He, Qi] Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.;[He, Lin] China Nucl Ind Huaxing Construct Co Ltd, Nanjing, Peoples R China.;[Dai, Hong-Liang] Hunan Univ, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Peoples R China.
通讯机构：
[Li, M ] U;Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.
关键词：
Nonlinear frequency ratio;CFRR;Sandwich doubly-curved shallow shell;Hygrothermal environment;Microcapsule coating
摘要：
In this paper, the nonlinear vibration characteristics and response of laminated carbon fiber reinforced resin (CFRR) doubly-curved shallow shell with a porous microcapsule coating under hygrothermal environment is investigated. Based on the first-order shear deformation theory, the nonlinear equations of motion are obtained by using Hamilton's principle, which are solved by utilizing the direct integration method and Runge-Kutta method. The effect of temperature and moisture, geometric parameters of microcapsules, geometric parameters of the shell, laying angle for carbon fiber and porosity of coating matrix are considered. Through numerical examples, it is found that temperature, moisture, length of edges, laying angle for carbon fiber and porosity of coating matrix have a positive effect on the dimensionless nonlinear frequency ratio, but negative effect on the dimensionless linear and nonlinear natural frequency of the shell. In addition, temperature, moisture, length of edges, laying angle for carbon fiber and porosity of coating matrix are proportional to the dimensionless nonlinear amplitude of the shell.
摘要：
A magnesium aluminum bimetallic organic framework derivative (MgAl-DHBDC/LDH composite) was prepared by etching MgAl bimetallic MOF template and used to remove U(VI) in aqueous solution. Compared to MgAl-DHBDC, the stability, dispersibility and removal ratio of U(VI) with MgAl-DHBDC/LDH were improved significantly over a wide pH range. The adsorption of uranium by MgAl-DHBDC/LDH was mainly multilayer physical adsorption, and the adsorption process was a spontaneous endothermic process. Moreover, the removal ratio of U(VI) by the MgAl-DHBDC/LDH composite remained above 90% after 4 cycles, indicating good regeneration performance. The MgAl-DHBDC/LDH composite shows great potential in the remediation of radionuclide uranium wastewater.
通讯机构：
[Gang Wang] K;Key Laboratory of Geotechnical and Structural Engineering Safety of Hubei Province, School of Civil Engineering, Wuhan University, Wuhan, China<&wdkj&>School of Civil Engineering, Shaoxing University, Shaoxing, China
关键词：
Rockburst intensities;Rockburst prediction;Strain rockburst;Stress gradient;Stress–strength ratio
摘要：
High temperature can cause serious damage to building structures, so it is important in order to re-evaluate the residual properties of radiation shielding concrete (RSC) exposed to elevated temperatures for ensuring security of medical, industrial and defense building structures. Thus, the deterioration of the mechanical, gamma-ray shielding properties and acoustic emission character-istics of barite concrete (BC) and magnetite concrete (MC) exposed to elevated temperatures were studied. Research indicated that the performance of aggregates played a crucial role in the thermal stability, residual physical and mechanical properties of concrete exposed to elevated temperatures. BC was subjected from bursting and even spalling at 300 degrees C, while its physical and mechanical properties deteriorated drastically. However, MC still had favorable integrity and relatively high residual mechanical properties at 800 degrees C. The maximum deterioration tempera-ture of BC exposed to elevated temperatures occurred at about 300 degrees C, while that of MC occurred at 450-600 degrees C. The degradation of the gamma-ray shielding properties of RSC exposed to elevated temperatures was significantly lower than its mechanical properties.
摘要：
蛇纹石混凝土具有优异的中子屏蔽性, 国外已将其广泛用于核工业及医疗行业屏蔽中子辐射。我国核事业发展迅速、蛇纹石矿产丰富, 本应对蛇纹石混凝土有大量研究及应用, 但事实上, 蛇纹石混凝土在我国不仅研究较少, 其应用更是远不及国外。基于此, 本文归纳了蛇纹石骨料特性, 对比了三种蛇纹石亚类骨料的物理性质、粒形特征和化学成分, 详细阐述了蛇纹石骨料对混凝土性能的影响, 并分析了当前蛇纹石混凝土研究存在的不足之处, 梳理了蛇纹石混凝土应用现状。最后, 为促进蛇纹石混凝土在我国的进一步研究与应用, 对该领域未来发展进行展望。 Serpentine concrete has excellent neutron shielding property, which has been widely used in the nuclear industry and medical industry to shield neutron radiation in foreign countries. With the rapid development of nuclear industry and rich serpentine minerals in China, it should be a lot of research and application of serpentine concrete, however, in fact, serpentine concrete is not only less studied in China, but also its application is far less than abroad. Therefore, the characteristics of serpentine aggregate were summarized, and the physical properties, particle shape characteristics and chemical composition of three kinds of serpentine subspecies aggregate were compared. The influence of serpentine aggregate on concrete property was described in detail, and the shortcomings of current research on serpentine concrete were analyzed. The application status of serpentine concrete was combed. Finally, in order to promote further research and application of serpentine concrete in China, the future development of this field was prospected.
期刊：
Environmental Science and Pollution Research,2023年30(7):18156-18167 ISSN：0944-1344
通讯作者：
Yang, Huaming
作者机构：
[Liu, Hongjuan; Yang, Huaming] China Univ Geosci, Engn Res Ctr Nanogeomat, Minist Educ, Wuhan 430074, Peoples R China.;[Min, Zefu; Liu, Hongjuan; You, Hang; Wang, Xi; Li, Yongjiang] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, Yingjiu] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.;[Yang, Huaming] China Univ Geosci, Key Lab Funct Geomat China Nonmet Minerals Ind, Wuhan 430074, Peoples R China.
通讯机构：
[Yang, Huaming] E;Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, People's Republic of China. hm.;Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan, 430074, People's Republic of China. hm.
通讯机构：
[Shuibo Xie] S;School of Civil Engineering, University of South China, Hengyang, People’s Republic of China<&wdkj&>Key Discipline Laboratory for National Defence of Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, People’s Republic of China
摘要：
To efficiently remove U(VI) from aqueous solutions, porous polyvinyl alcohol/carboxylated carbon nanotubes/sodium alginate (PPCS) hydrogel microspheres were prepared using the physical cross-linking method. The successful formation of highly porous PPCS hydrogel microspheres was confirmed by SEM and BET. Moreover, PPCS hydrogel microspheres were recovered from aqueous solutions more easily than carbon nanotubes. The main mechanism of PPCS for U(VI) removal may be the chelation of hydroxyl and carboxyl groups. PPCS may be a promising and recyclable adsorbent for uranium extraction.
作者机构：
[黄仕元; 林森焕; 董雯; 王国华; 吴兴良; 袁瀚钦] School of Civil Engineering, University of South China, Hengyang;421001, China;[黄仕元; 林森焕; 董雯; 王国华; 吴兴良; 袁瀚钦] 421001, China
通讯机构：
[Huang, S.] S;School of Civil Engineering, China
