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根据三种采暖方案特点分析,对某高校教工住宅三种采暖方案在初投资、运行费用、性能优缺点等方面进行技术和经济及环境保护方面的比较,最终确定室内装散热器的集中采暖系统为最佳方案. 相似文献
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灌注桩来越广泛的运用在工程中,因为灌注桩的施工大部分在地面以下,为确保工程质量,对灌注桩施工工艺及注意事项进行详细介绍。 相似文献
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广州港南沙港区粮食及通用码头工程由重力式、板桩和高桩三种不同码头结构形式组成。本文对三种形式码头交叉衔接段的施工顺序、施工难点及施工控制要点进行介绍,重点介绍了重力式和板桩结构衔接处对接倒滤结构的施工工艺。码头建造后未出现漏砂及不利于码头生产的不均匀沉降,本文提供的施工方法对类似工程提供了有益的借鉴。 相似文献
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广州港南沙港区粮食及通用码头工程由重力式、板桩和高桩三种不同码头结构形式组成。本文对三种形式码头交叉衔接段的施工顺序、施工难点及施工控制要点进行介绍,重点介绍了重力式和板桩结构衔接处对接倒滤结构的施工工艺。码头建造后未出现漏砂及不利于码头生产的不均匀沉降,本文提供的施工方法对类似工程提供了有益的借鉴。 相似文献
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通过对CFG桩施工工艺的改进,延长其在低温环境下施工的有效作业时间,保证了成桩质量。采用静载荷试验及低应变对地基的加固效果进行检验,结果表明达到了加固的要求,效果良好。对CFG桩在低温环境中的应用具有参考价值。 相似文献
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三灰土底基层施工作为一种新工艺,施工工艺较复杂,难度较大,本文结合宁靖盐高速公路二期工程路面工程泰州段三灰土底基层的配合比设计过程和施工体会,重点对三灰土底基层的施工工艺和质量控制要点进行阐述。 相似文献
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一、序言烧渣油(C 重油及燃料油)锅炉的腐蚀、污壅及炉灰是设备管理人员及锅炉设计人员面临的最重要的问题之二。锅炉腐蚀有三种形式:1.高温腐蚀:伴随着污壅及炉灰,出现在锅炉本体的火炎侧;2.低温腐蚀:出现在经济器,空气预热 相似文献
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FOB、CIF、CFR与FCA、CIP、CPT价格术语应用与案例分析 总被引:1,自引:0,他引:1
FOB、CIF、CFR与FCA、CIP、CPT价格术语在运输方式、风险转移点、提单签发人、时间、地点、性质及运费计收、保险区段、运输合同订立等方面存在差异,国际商会自上世纪20年代起即不断对有关价格术语进行研究和解释.但由于国际贸易、运输的发展,人们对新、老价格术语中买卖双方的风险转移、责任、费用的划分时常难以理解.本文中作者试通过案例分析说明之. 相似文献
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C. Pohl P.L. Croot U. Hennings T. Daberkow G. Budeus M. Rutgers v.d. Loeff 《Journal of Marine Systems》2011,84(1-2):28-41
Surface seawater samples were taken in the framework of the GEOTRACES program on “POLARSTERN” expedition ANT XXIII/1 in the Eastern Atlantic in 2005 to study the distribution of the trace elements Hg (mercury), Pb (lead), Cd (cadmium), Cu (copper), Ni (nickel), Zn (zinc), Co (cobalt), Mn (manganese), Fe (iron), and Al (aluminium). With the exception of Hg, results were compared to earlier datasets from 1989 to 1990. The particulate fraction averaged over the transect was calculated to be 49% for Cd, 23% for Mn and 50% for Fe indicating a release of these TEI's (trace elements and their isotopes) from a leachable SPM fraction in the stored and acidified samples.Total Pb concentrations ranged between 5 and 20 pmol kg? 1 in 2005 with highest values in the ITCZ (intertropical convergence zone). In 1989 Pb concentrations were twice as high in the region of the ITCZ, while by a factor of 10–15 higher values were obtained in the North Atlantic.Total Cd and Co are dominated, by different seasonal upwelling regimes (Equatorial upwelling, Guinea Dome, Angola Dome).Total Cu, Ni, Fe, Mn and Al show nearly identical concentrations in 1990 and 2005. For total manganese and aluminium strong maxima (3–4 nmol kg? 1 and 55 nmol kg? 1 respectively) are observed between 23°N and 0°, while the Fe maximum (6–9 nmol kg? 1) is located at 7°N. Total Hg concentrations ranged between 0.5 and 4.5 pmol kg? 1. 相似文献
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海天 《舰载武器(含VCD光盘)》2008,(1):46-49
CVN-77“乔治·布什”号航空母舰是美国海军“尼米兹”级超级航母的第十艘,也是该纫的最后一艘,是美国海军第十一艘核动力航空母舰,也是美国海军中第一艘以“布什”(美国第41任总统,现任总统小布什之父)命名的战舰。据称,CVN-77之所以以老布什的名字命名,不仅是因为他曾任美国总统,曾领导美国打赢了1991年的海湾战争,而且缘于他与美国海军及航母有很深的渊源:早在1942年,18岁的布什就参加了美国海军并于次年成为一名舰载机飞行员, 相似文献
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Joan M. Bondareff 《Coastal management》2013,41(2):147-161
Congress has not been able to pass comprehensive oceans policy legislation in recent years. Nonetheless, significant individual oceans policy measures have been enacted. These are reviewed in the article. A Joint Committee on the Organization of Congress has been established to recommend reforms in how Congress conducts its business, including proposals for committee restructuring. These proposals could affect how Congress examines oceans policy issues, but it is unlikely that these reforms will make it easier to pass comprehensive oceans policy legislation. For this to happen, well‐organized constituencies have to demonstrate support for this legislation, which has not happened to date. 相似文献
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工业界的压力主要来自政治记者:当今,政府对环境保护的要求越来越高,有所谓“零容忍度”的环境要求之说。在此情形之下,油轮承受的压力最大。ICS一项重要的工作是制订综合性的政策。在政策制订方面,ICS将作何考虑?Horrocks:我们面临的挑战是“灾难”。1978年的英国溢油事件,199 相似文献
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在世界经济加速全球化的背景下,港口如何应对船舶日益大型化发展态势?吞吐量日益攀升,如何保持港区道路畅通有序?面对恐怖主义威胁,作为物流前沿阵地的港口在保安问题上有何良策?在环保日益受到重视的今天,港口又将担当何种角色?2006年10月25日,一年一度的“大厦组织”会议开幕。来自美国长滩港、纽约/新泽西港、荷兰鹿特丹港、新加坡港以及中国上海港等世界五大港的港务局局长、总裁或首席执行官齐聚上海,就当今世界港口发展最前沿的问题展开对话。 相似文献
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Marc L. Miller 《Coastal management》2013,41(4):301-311
Abstract Marine and coastal zone policy represents a collaboration of people managing and people managed. This paper takes a holistic stance in suggesting that marine communities are viewed properly as networks of focused interest groups, policymakers, professionals, and publics. The interplay between culture and marine and coastal policy is appropriately one topic of applied social research. Seven ethnographic studies in this domain are introduced in this theme issue and help us to understand sociocultural processes and institutions bearing on marine affairs. 相似文献
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