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现代医院建筑施工技术的创新与实践

工程建设与设计 2024年第18期 125-127页

作者：时嘉巍许凯龙兰东浩李旸中国建筑第二工程局有限公司北京100160

以泰达国际心血管病医院在新建停车楼工程、介入中心改扩建工程及医技楼改扩建工程为例,探讨了如何运用现代建筑施工技术的创新与实践。通过建筑信息模型(BIM)技术、绿色施工技术和智能化技术的综合应用,实现了工程的高效管理、节能减... 详细信息

以泰达国际心血管病医院在新建停车楼工程、介入中心改扩建工程及医技楼改扩建工程为例,探讨了如何运用现代建筑施工技术的创新与实践。通过建筑信息模型(BIM)技术、绿色施工技术和智能化技术的综合应用,实现了工程的高效管理、节能减排及智能化运维,并详细分析了这些技术在管道支吊架、母线、风管组装、地下室、土方施工阶段的应用及其效果。

关键词：医院建筑 BIM技术绿色施工施工技术创新

维普期刊数据库博看期刊

Effect of Laser Power on Microstructure and Wear Resistance of WC_P/Ni Cermet Coating

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Journal of Iron and Steel Research International 2006年第3期13卷 74-78页

作者： SI Song-hua yUAN Xiao-min LIU yue-long HE yi-zhu Keesam Shin School of Materials Science and Technology Anhui University of Technology Ma＇anshan 243002 Anhui China School of Nano and Advanced Materials Changwon National University Changwon 641-773 Gyeungnam do Korea

Laser cladding nickel-based alloy coating （Ni60） and nickel-based composite coating doped with WC particles by 35 % （WCp/Ni） were produced on the low-carbon steel substrate by CO2 continuous wave laser with power of 5 kW using the injected powder technique. The effect of laser power on microstructure and wear resistance of laser cladding WCp/Ni cermet coating was investigated. The WCp/Ni alloy coating with evenly distributed WC ceramic phases and the better bond with the substrate alloy was obtained at a power of 2.2 kW. diffusion solution reaction happened between WC particles and the substrate alloy during laser cladding, and led to the formation of block rich-tungsten carbide on the edges of the WC particles, especially at higher power. The WCp/Ni alloy coating consists of the undissolved WC particles, the block or dendritic rich-tungsten carbide, the bar-like rich-chromium carbide, and dendrite solid solution and eutectic structure among the carbides. Microhardness and wear resistance of the WCp/Ni coating at different powers were much higher or better than those of Ni60 alloy coating, and the best results were obtained at power of 2.2 kW.

关键词： laser power cermet coating microstructure wear resistance

Overexpression of SOS Genes Enhanced Salt Tolerance in Sweetpotato

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Journal of Integrative Agriculture 2012年第3期11卷 378-386页

作者： GAO Shang yUAN Li ZHAI Hong LIU Cheng-long HE Shao-zhen LIU Qing-chang Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization Ministry of Education/College of Agriculture and BiotechnologyChina

The production of transgenic sweetpotato （*** 18） plants exhibiting enhanced salt tolerance using salt overly sensitive （SOS） genes was achieved through Agrobacterium tumefaciens-mediated *** strain EHA105 harbors a binary vector pCAMBIA3301 with SOS genes （SOS1,SOS2 and SOS3） and bar *** culture was conducted using 0.3 mg L^-1 phosphinothricin （PPT）.A total of 40 plants were produced from the inoculated 170 cell aggregates via somatic *** analysis showed that 37 of the 40 regenerated plants were transgenic *** in vitro assay demonstrated that superoxide dismutase （SOd） and proline were significantly more accumulated and malonaldehyde （MdA） was significantly less accumulated in 21 transgenic plants than in control plants when they were exposed to 86 mmol L^-1 *** tolerance of these 21 plants was further evaluated with Hoagland solution containing 0,51,86,and 120 mmol L^-1 NaCl in the *** results indicated that 6 of them had significantly better growth and rooting ability than the remaining 15 transgenic plants and control *** of SOS genes in the 6 salt-tolerant transgenic plants was demonstrated by RT-PCR *** study provides an alternative approach for improving salt tolerance of sweetpotato.

关键词： Agrobacterium tumefaciens sweetpotato salt tolerance SOS transgenic plant

WheatGene: A genomics database for common wheat and its related species

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The Crop Journal 2021年第6期9卷 1486-1491页

作者： diego F.Garcia Zhengyu Wang Jiantao Guan Lingjie yin Shuaifeng Geng Aili Li long Mao Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Common wheat(Triticum aestivum) is a hexaploid plant(AABBdd) derived from genetically related tetraploid wheat T. turgidum(AABB) and a diploid goatgrass Aegilops tauschii(dd). Recent advances in sequencing technology and genome assembly strategies allow the acquisition of multiple wheat genomes, calling for a centralized database to store, manage and query the genomics information in a manner to reflect their evolutionary relationship and to perform effective comparative genome analysis. Here,we built WheatGene, a database that contains five wheat genomes of 318,102 genes and 945,900 transcripts and their expression information in 998 RNA-seq samples that can be searched and compared in an interactive manner. WheatGene was developed with drupal, a popular content management system and the toolkit Tripal managed the biological information. The database was accessible through a web browser with species, search, gene expression, tools, and literature entries. Tools available were BLAST,synteny viewer, map viewer, JBrowse, data downloads, gene expression heatmap and bar chart, and homologs viewer. Moreover, the map viewer connected genomics data with genetic maps and QTL that can be searched for markers for molecular breeding. WheatGene was developed with open-source modules and libraries. WheatGene is available at http://***.

关键词： Wheat Genome Comparative genomics database Genome browser

基于沉积微相特征挖掘的随机森林岩石相测井识别方法——以新场地区须家河组二段致密砂岩为例

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物探与化探 2024年第5期48卷 1337-1347页

作者：何小龙张兵杨凯何一帆李琢成都理工大学地球勘探与信息技术教育部重点实验室四川成都610059

致密砂岩是天然气和石油的重要储层之一,通过致密砂岩岩石相的识别,可以更加深入地了解储层发育特征。采用岩心观察和测井数据处理相结合,分析新场地区致密砂岩岩石相与沉积微相的特征以及内部联系,通过沉积微相特征数据挖掘,构建具有... 详细信息

致密砂岩是天然气和石油的重要储层之一,通过致密砂岩岩石相的识别,可以更加深入地了解储层发育特征。采用岩心观察和测井数据处理相结合,分析新场地区致密砂岩岩石相与沉积微相的特征以及内部联系,通过沉积微相特征数据挖掘,构建具有地质内涵的随机森林分类模型。结果表明:(1)致密砂岩可划分为泥岩、沙纹层理粉砂岩、块状细砂岩、平行层理细砂岩、块状中粗砂岩、平行层理中粗砂岩、交错层理中粗砂岩7种典型岩石相;(2)研究区主要沉积微相为水下分流河道、水下分流间湾、河口坝以及前三角洲泥,且与岩石相的沉积联系紧密;(3)分类模型中可以将沉积微相内GR曲线的相对重心(RM)、变差方根差(GS)、平均中位数(AM)以及平均斜率(M)作为特征参数,增加数据集的特征数;(4)考虑沉积微相特征尤其是水体能量与水体动荡情况,可以显著提升随机森林分类模型性能。研究结果为机器学习方法识别岩石相提供了新思路,并为致密砂岩油气勘探提供了重要的参考。

关键词：沉积微相随机森林岩石相须家河组致密砂岩

配置桁架钢筋的山区钢-混组合人行桥关键技术研究

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价值工程 2024年第16期43卷 164-168页

作者：张子龙熊江东马健苗玲陈刚怒江美丽公路绿道建设工程指挥部泸水673200 云南省综合交通发展中心昆明650032

为进一步推广绿道人行桥梁在山区地带的发展,本文总结了传统组合梁桥桥面板施工方式在山区地形下的局限性,同时依托云南省怒江美丽公路绿道项目,以一座30m跨的钢-混组合梁桥为例,提出了一种利用桁架钢筋模板施工组合梁桥新形式,详细介... 详细信息

为进一步推广绿道人行桥梁在山区地带的发展,本文总结了传统组合梁桥桥面板施工方式在山区地形下的局限性,同时依托云南省怒江美丽公路绿道项目,以一座30m跨的钢-混组合梁桥为例,提出了一种利用桁架钢筋模板施工组合梁桥新形式,详细介绍了桁架钢筋模板的构造特点与独特优势;建立全桥的有限元模型,进行结构的静力分析,并采用Abaqus有限元软件对桁架钢筋模板在施工工程中承载力进行了数值分析。结果表明:该类组合梁受力模式好,刚度大,同时桁架钢筋模板在施工工程中安全储备高,配置桁架钢筋的钢-混组合梁桥值得在山区桥梁建设中推广应用。

关键词：山区桥梁钢-混组合梁桁架钢筋人行桥

维普期刊数据库博看期刊

Wandering gravel-bed rivers and high-constructive stable channel sandy fluvial systems in the Ross River area,yukon Territory,Canada

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Geoscience Frontiers 2011年第3期2卷 277-288页

作者： darrel G.F.long Grant W.Lowey department of Earth Sciences Laurentian UniversitySudburyOntario P3E 2C6Canada yukon Geological Survey EnergyMines and Resources.Government of YukonP.O.Box 2703(K102)WhitehorseYukon Y1A 2C6Canada

Mid-Cretaceous strata within the Tintina Trench, 3 km west of the community of Ross River, contain evidence of deposition in two distinct, alternating, fluvial settings. Coal-bearing, mud-dominated strata are commonly associated with high-constructive sandy channel systems, with extensive overbank, levee and splay deposits. Channels are between 3 and 30 m wide and 0.4-7 m thick. They show repetitive development of side and in-channel bar-forms, as well as up-channel widening of the rivers by selective erosion of associated overbank and levee deposits. Levees extended for several hundred metres away from the channels. In this setting low-angle inclined stratification and epsilon cross stratification may reflect lateral migration of crevasse channels or small streams. The paucity of exposure prevents recognition of the channels as products of multiple channel anastomosed systems or single channel high-constructive systems. Gravel-dominated strata, inter-bedded with, and overlying coal-bearing units, are interpreted as deposits of wandering gravel-bed rivers, with sinuosity approaching 1.4. In most exposures they appear to be dominated by massive and thin planar-bedded granule to small pebble conglomerates, which would traditionally be interpreted as sheet-flood or longitudinal bar deposits of a high-gradient braided stream or alluvial fan. Architectural analysis of exposures in an open-pit shows that the predominance of flat bedding is an artefact of the geometry of the roadside exposures. In the pit the conglomerates are dominated by large scale cross stratification on a scale of 1-5.5 m. These appear to have developed as downstream and lateral accretion elements on side-bars and on in-channel bars in water depths of 2-12 m. Stacking of strata on domed 3rd order surfaces suggests development of longitudinal in-channel bar complexes similar to those observed in parts of the modern Rhone River system. Mudstone preserved in some of the channels reflects intervals of ch

关键词： Anastomosing rivers Wandering gravel-bedrivers Fluvial architecture Cretaceous yukon

A pilot-scale study of selective desulfurization via urea addition in iron ore sintering

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International Journal of Minerals,Metallurgy and Materials 2016年第11期23卷 1239-1243页

作者： Hong-ming long Xue-jian Wu Tie-jun Chun Zhan-xia di Ping Wang Qing-min Meng School of Metallurgical Engineering Anhui University of Technology

The iron ore sintering process is the main source of SO_2 emissions in the iron and steel industry. In our previous research, we proposed a novel technology for reducing SO_2 emissions in the flue gas in the iron ore sintering process by adding urea at a given distance from the sintering grate bar. In this paper, a pilot-scale experiment was carried out in a commercial sintering plant. The results showed that, compared to the SO_2 concentration in flue gas without urea addition, the SO_2 concentration decreased substantially from 694.2 to 108.0 mg/m^3 when 0.10wt% urea was added. NH_3 decomposed by urea reacted with SO_2 to produce（NH_4）_2SO_4, decreasing the SO_2 concentration in the flue gas.

关键词： iron ore sintering urea flue gas desulphurization

Microstructure and thermal expansion of copper-based amorphous alloys during structural relaxation

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China Foundry 2020年第1期17卷 8-14页

作者： Jin-bei Zhao Xin-hui Fan Bing Li Ke yang yi-long Kong Zhao Wang College of Materials and Chemical Engineering Xi’an Technological University

(Cu43Zr48Al9)98y2 amorphous alloy bar was prepared by the arc melting copper mold absorption casting method,and then,the amorphous alloy was annealed at different temperatures for different *** influence of heating rate on thermal expansion and thermal stability was studied by thermomechanical analysis(TMA),and the microstructure evolution of the amorphous alloy during structural relaxation and crystallization was studied by XRd and *** show that the structural evolution behavior of the(Cu43Zr48Al9)98y2 amorphous alloy can be divided into five different stages(structural relaxation preparation stage,structural relaxation stage,first crystallization stage,second crystallization stage,and grain growth stage).When the heating rate is 20 K/min,the amorphous alloy has the smallest thermal expansion coefficient and the best thermal *** width of the supercooled liquid region is 66.42 *** with different relaxation states were prepared by annealing at the heating rate of 20 K/*** structural evolution of amorphous alloys with different relaxation states is as follows:amorphous→CuZr2+AlCu2Zr7→CuZr2+AlCu2Zr7+CuZr(B2)+CuZr(M)+Cu10Zr7→CuZr2+AlCu2Zr7+CuZr(B2)+CuZr(M).After annealing at 706 K and 726 K(in the supercooled liquid region)for 1.5 h,the amorphous-nanocrystalline composites were *** the annealing temperature is 706 K,the crystallization process of the sample is as follows:amorphous→Cu10Zr7→Cu10Zr7+CuZr,and for the sample at 726 K,it is as follows:amorphous→CuZr2+AlCu2Zr7+Cu10Zr7→Cu10Zr7+CuZr2→CuZr2+CuZr(B2)+Cu10Zr7.

关键词： amorphous-nanocrystalline composite materials structural relaxation microstructure thermal expansion thermal stability