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宽幅薄壁预应力混凝土箱梁加劲斜撑施工技术

世界桥梁 2013年第2期41卷 12-16页

作者：余本俊中铁大桥局集团有限公司湖北武汉430050

孟加拉卡拉夫里三桥主桥为(115+3×200+115)m四塔五跨预应力混凝土单索面部分斜拉桥,上部结构为横断面带斜撑的预应力混凝土箱梁。根据箱梁和斜撑的结构特点和设计意图,采取了斜撑与箱梁节段整体浇注、斜撑钢筋骨架整体安装、斜撑预应... 详细信息

孟加拉卡拉夫里三桥主桥为(115+3×200+115)m四塔五跨预应力混凝土单索面部分斜拉桥,上部结构为横断面带斜撑的预应力混凝土箱梁。根据箱梁和斜撑的结构特点和设计意图,采取了斜撑与箱梁节段整体浇注、斜撑钢筋骨架整体安装、斜撑预应力滞后1个节段施工、箱内预留封锚混凝土浇注通道的施工方法,保证了斜撑的施工质量和进度。

关键词：部分斜拉桥薄壁箱梁加劲斜撑整体浇注预应力桥梁施工

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封闭群稀有鮈鲫对几种常见化学品的敏感性

中国环境科学 2014年第4期34卷 1059-1066页

作者：吴本丽曹岩罗思王剑伟中国科学院水生生物研究所湖北武汉430072 中国科学院大学北京100049 华中农业大学水产学院湖北武汉430070

采用96h急性毒性试验检测了稀有鮈鲫封闭群和野生群对重铬酸钾、五氯酚、氯化汞、对氯苯胺、氯化镉等几种常见化学品的敏感性差异,并通过7d亚慢性毒性试验以及胚胎-卵黄囊吸收阶段毒性试验检测了对氯苯胺、氯化镉对稀有鮈鲫封闭群的亚... 详细信息

采用96h急性毒性试验检测了稀有鮈鲫封闭群和野生群对重铬酸钾、五氯酚、氯化汞、对氯苯胺、氯化镉等几种常见化学品的敏感性差异,并通过7d亚慢性毒性试验以及胚胎-卵黄囊吸收阶段毒性试验检测了对氯苯胺、氯化镉对稀有鮈鲫封闭群的亚慢性毒性.急性毒性试验结果表明,Cr6+、五氯酚、Hg2+、对氯苯胺和Cd2+对稀有鮈鲫封闭群的96h LC50分别为69.0mg/L,111.4,56.9μg/L,35.5,12.2mg/L;Cr6+对封闭群的96h LC50低于野生群(99.8mg/L)(P0.05).胚胎-卵黄囊吸收阶段和7d亚慢性毒性测试结果表明,Cd2+和对氯苯胺暴露后封闭群在孵化率、畸形率、死亡率、生长等方面均表现出毒性效应,其中生长指标更为敏感.以生长为观测指标,2种试验的结果无显著差异,对Cd2+的NOEC均为0.1mg/L,胚胎-卵黄囊吸收阶段试验中对氯苯胺的NOEC为2mg/L,7d亚慢性毒性试验中对氯苯胺的NOEC为4mg/L.本研究证明了稀有鮈鲫封闭群对化学药品的敏感性高,可作为化学品生态毒理学测试的种源.

关键词：稀有鮈鲫封闭群急性毒性测试亚慢性毒性测试 closed colony (Ihb IHB)

The role of crustal contamination in the formation of Ni-Cu sulfide deposits in Eastern Tianshan,Xinjiang,Northwest China:Evidence from trace element geochemistry,Re-Os,Sr-Nd,zircon Hf-O,and sulfur isotopes

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The role of crustal contamination in the formation of Ni-Cu ...

Techno-economic analysis of sidestream ammonia removal technologies:Biological options versus thermal stripping

中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： Dong-Mei Tang Ke-Zhang Qin He Sun ben-Xun Su Qing-Hua Xiao Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences Institute of Mineral Resources Research China Metallurgical Geology Bureau

Tulaergen,Xiangshan,***,and Baishiquan magmatic Ni-Cu sulfide deposits,which are all located in the eastern part of the Central Asian Orogenic Belt,and associated with small mafic-ultramafic intrusions with high-grade Cu and Ni orebodies have similar ages of *** magma sources are MORB-like and OIB-like depleted *** calculations of Sr-Nd and zircon Hf isotopic data show that about 10-15% of oceanic slab components are added into the source of Baishiquan and Tianyu intrusions,but only less than 5% are in the three other *** higher degree of subduction metasomatism in the Baishiquan and Tianyu magma sources is likely Lhe resulL of the Paleozoic multiple-stage ***,the relative enrichment of LILE,depletion of HFSE,and lower Ce/Pb ratios indicate that these intrusions experienced crustal *** effects of crustal contamination are also identified in the magmatic sulfide deposits by the higher zircon δO,higher sulfide γOs,and δS values *** propose a two-stage crustal contamination model of the Tulaergen,Xiangshan,Tianyu,and Baishiquan ***,the Huangshan intrusion,which has the highest degree of crustal contamination, likely experienced only single-stage upper crustal contamination(～14.2% ).The addition of crustal S appears to be directly related to triggering S saturation in these *** to a simple S isotopic modeling calculation,11% ,2.9% ,1.2% and 2.1% of the crustal sulfur addition into the parental magma would be required to form the Tianyu,Baishiquan,Xiangshan,and Tulaergen deposits, respectively.

关键词： Eastern Tianshan Ni-Cu sulfide deposits Re-Os and S geochemistry Source characteristics Crustal contamination

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Environmental Science and Ecotechnology 2023年第1期13卷 107-114页

作者： Pascal Ochs ben Martin Eve Germain-Cripps Tom Stephenson Mark van Loosdrecht Ana Soares Cranfield University College RoadCranfieldBedfordMK430ALUnited Kingdom Thames Water Reading STWIsland RoadRG20RPReadingUnited Kingdom Delft University of Technology Building 58Van der Maasweg 92629DelftNetherlands

Over the past twenty years,various commercial technologies have been deployed to remove ammonia(NH4eN)from anaerobic digestion(AD)*** recent years many anaerobic digesters have been upgraded to include a pre-treatment,such as the thermal hydrolysis process(THP),to produce more biogas,increasing NH4eN concentrations in the liquors are costly to *** study provides a comparative techno-economic assessment of sidestream technologies to remove NH4eN from conventional AD and THP/AD dewatering liquors:a deammonification continuous stirred tank reactor(PNA),a nitrification/denitrification sequencing batch reactor(SBR)and thermal ammonia stripping process with an ammonia scrubber(STRIP).The SBR and PNA were based on full-scale data,whereas the STRIP was designed using a computational approach to achieve NH4eN removals of 90e95%.The PNA presented the lowest whole-life cost(WLC)over 40 years,with£7.7 M,while the STRIP had a WLC of£43.9 *** study identified that THP dewatering liquors,and thus a higher ammonia load,can lead to a 1.5e3.0 times increase in operational expenditure with the PNA and the ***,this study highlighted that deammonification is a capable and cost-effective nitrogen removal *** like the STRIP respond to current pressures faced by the water industry on ammonia recovery together with targets to reduce nitrous oxide ***,ammonia striping-based processes must further be demonstrated in WWTPs and WLC reduced to grant their wide implementation and replace existing technologies.

关键词： Deammonification Nitrification Denitrification Wastewater Sludge dewatering liquors

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碳纤维布加固铝合金连接试验

同济大学学报（自然科学版） 2015年第3期43卷 371-378,435页

作者：郭小农王奔蒋首超裴进玉同济大学土木工程学院上海200092 同济大学建筑设计研究院(集团)有限公司上海200092

铝合金材料的可焊性较差,焊接热影响区强度降低显著,用碳纤维布加固铝合金是一种有效的措施.为此探究了碳纤维布与铝合金间的黏结性能,完成2批共计37个碳纤维布加固铝合金双搭接节点试验,研究了碳纤维布黏结长度、宽度、层数、碳纤维布... 详细信息

铝合金材料的可焊性较差,焊接热影响区强度降低显著,用碳纤维布加固铝合金是一种有效的措施.为此探究了碳纤维布与铝合金间的黏结性能,完成2批共计37个碳纤维布加固铝合金双搭接节点试验,研究了碳纤维布黏结长度、宽度、层数、碳纤维布材料以及黏结构造等对黏结效果的影响.总结了碳纤维布加固铝合金双搭接节点的破坏模式和破坏机理,得到碳纤维布的应力应变分布规律,提出了双搭接节点的有效黏结长度和承载力实用计算公式.

关键词：碳纤维布加固铝合金剪切试验黏结性能有效黏结长度极限承载力

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为照片添加怀旧效果

影像视觉 2010年第6期11卷 76-77页

作者： ben Brain RD（翻译）

ben Brain告诉大家一个相当简单的技巧,可以借助图层混合将不同纹理素材与一幅普通的城市风光照混在一起,创造出迷人的画面效果。Photoshop中的＂复杂＂的图层功能令很多初学者望而却步,但其实这项功能很容易掌握。

关键词： Photoshop 照片画面效果城市风初学者功能

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基于卡尔曼滤波理论的传感器路由协议

武汉理工大学学报 2008年第2期30卷 110-112页

作者：谢旭黄本雄华中科技大学电子与信息工程系武汉430074

容延迟移动传感器网络针对实际无线网路拓扑动态变化导致的间歇性连接,使用分布式节点存储转发的机制保证了端到端信息传输的可靠性。提出了一种基于卡尔曼滤波器预测理论的容延迟移动传感器网络路由协议。采用本地预测的方法估计节点... 详细信息

容延迟移动传感器网络针对实际无线网路拓扑动态变化导致的间歇性连接,使用分布式节点存储转发的机制保证了端到端信息传输的可靠性。提出了一种基于卡尔曼滤波器预测理论的容延迟移动传感器网络路由协议。采用本地预测的方法估计节点的信息携带能力,选择最佳信息携带节点。进行了仿真模拟实现,结果表明,该协议具有较好的传输可靠性和传输延时,同时大大减少了网络开销,缓解了网络拥塞,在容延迟移动传感器网络中具有较佳的性能表现。

关键词：卡尔曼滤波器容延迟网络属性权重路由