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12篇 您的检索式:作者名="A.Hall"
    题名 作者 年代 出处 被引量
1火山灰的提取及测试技术显示文摘同一次火山爆发产生的火山灰 ,能在广阔的区域内形成等时标志层 ,成为地层定年和对比的极有价值的工具。文中介绍了提取肉眼不可见火山灰的 4种方法 :烧失法、稀碱法、重液浮选法和酸化法 ,还介绍了火山玻璃的显微镜下识别技术及电子探针测试技术。隋淑珍 刘嘉麒 郭正府 Valerie A.HALL Chris S.M.TURNEY 王文远 2003地学前缘2003,10,1:8
2Future aircraft cabins and design thinking:optimisation vs.win-win scenarios显示文摘With projections indicating an increase in mobility over the next few decades andannual flight departures expected to rise to over 16 billion by 2050,there is a demand for theaviation industry and associated stakeholders to consider new forms of aircraft and technology.Customer requirements are recognized as a key driver in business.The airline is the principalcustomer for the aircraft manufacture.The passenger is,in turn,the airline's principal customerbut they are just one of several stakeholders that include aviation authorities,airport operators,air-traffic control and security agencies.The passenger experience is a key differentiator usedby airlines to attract and retain custom and the fuselage that defines the cabin envelope for thein-flight passenger experience and cabin design therefore receives significant attention for newaircraft,service updates and refurbishments.Decision making in design is crucial to arrivingat viable and worthwhile cabin formats.Too litle innovation will result in an aircraftmanufacturer and airlines using its products falling behind its competitors.Too much mayresult in an over-extension with,for example,use of immature technologies that do not havethe necessary reliability for a safety critical industry or sufficient value to justify the develop-ment effort.The multiple requirements associated with cabin design,can be viewed as an area for optimisation,accepting trade-offs between the various parameters.Good design,however,is often defined as developing a concept that resolves the contradictions and takes the solutiontowards a win-win scenario.Indeed our understanding and practice of design allows forbehaviors that enhance design thinking through divergence and convergence,the use ofabductive reasoning,experimentation and systems thinking.This paper explores and definesthe challenges of designing the aireraft cabin of the future that will deliver on the multiplerequirements using experiences from the A350 XWB and future cabin design concepts.Inparticular the paper explores the value of implementing design thinking insights in engineeringpractice and discusses the relative merits of decisions based on optimisation versus win-winscenarios for aircraft cabin design and wider applications in aerospace environments.Theincreasing densification of technological opportunities and shifting consumer demand coupledwith highly complex systems may ultimately challenge our ability to make decisions based onoptimisation balances.From an engineering design perspective optimisation tends to precludecertain strategies that deliver high quality results in consumer scenarios whereas win-winsolutions may face challenges in complex technical environments.A.Hall T.Mayer I.Wuggetzer P.R.N.Childs 2013Propulsion and Power Research2013,2,2:4
3Holocene vegetation change in relation to fire and volcanic events in Jilin, Northeastern China显示文摘Volatiles erupted from large-scale explosive volcanic activities have a significant impact on climate and environmental changes.As an important ecological factor,the occurrence of fire is affected by vegetation cover,and fire can feed back into both vegetation and climatic change.The causes of fire events are diverse;and can include volcanic eruptions.The amount of charcoal in sediment sequences is related to the frequency and intensity of fire,and hence under good preservation conditions fire history can be reconstructed from fossil charcoal abundance.Until now,little research on the role of fire has been carried out in northeastern China.In this study,through research on charcoal and tephra shards from Gushantun and Hanlongwan,Holocene vegetation change in relation to fire and volcanic events in Jilin,Northeastern China,was investigated.Where tephra shards are present in Gushantun it is associated with low level of both conifers and broadleaved trees,and is also associated with a pronounced charcoal peak.This suggests forest cover was greatly reduced from a fire caused by an eruption of the Tianchi volcano.We also detected one tephra layer in Hanlongwan,which also has the almost same depth with low level forest pollen values and one charcoal peak.This was caused probably by an eruption of the Jinlongdingzi volcano.ZHAO HongLi LI XiaoQiang Valerie A.HALL 2015Science China Earth Sciences2015,58,8:4
4Political Science and the Three New Institutionalisms*显示文摘Peter A.Hall Rosemary C. R.Taylor 2006Political Studies2006,,5:1
5Political Science and the Three New Institutionalisms*显示文摘Peter A.Hall Rosemary C. R.Taylor 2006Political Studies2006,,5:1
6Political Science and the Three New Institutionalisms*显示文摘Peter A.Hall Rosemary C. R.Taylor 2006Political Studies2006,,5:1
7Adenosine A2A receptor in the monkey basal ganglia: Ultrastructural localization and colocalization with the metabotropic glutamate receptor 5 in the striatum显示文摘James W.Bogenpohl Stefanie L.Ritter Randy A.Hall YolandSmith 2011Neurol2011,,3:1
8Political Science and the Three New Institutionalisms*显示文摘Peter A.Hall Rosemary C. R.Taylor 2006Political Studies2006,,5:1
9社区水平上土源性蠕虫病和血吸虫病评价指南——防治规划管理者的手册(续三)A.Montresor D.W.T.Crompton D.A.P.Bundy A.Hall L.Savioli 何家昶 沈光金 葛继华 2000热带病与寄生虫学2000,,1:0
10社区水平上土源性蠕虫病和血吸虫病评价指南——防治规划管理者的手册(续二)A.Montresor D.W.T.Crompton D.A.P.Bundy A.Hall L.Savioli 何家昶 沈光金 葛继华 1999热带病与寄生虫学1999,,4:0
11社区水平上土源性蠕虫病和血吸虫病评价指南——防治规划管理者的手册A.Montresor D.W.T.Crompton D.A.P.Bundy A.Hall L.Savioli 何家昶 沈光金 葛继华 1999热带病与寄生虫学1999,,1:0
12海绿石及绿磷石中的铵显示文摘铵离子是许多岩石的一种天然成分,其含量可达1~1000×10^(-6).在沉积岩中,铵在矿物中既可以作为一种固定的成分,以类质同象方式替换钾质矿物(如云母或长石)结构中的钾,也可以占据具大阳离子交换性能矿物(如蒙脱石)中的可变阳离子的位置.据认为,沉积物中所有的铵都来自于腐烂的含氮有机物质.最近的研究强调指出,在沉积岩中,伊利石可能是铵离子的一种寄主矿物.Sterhe等人(1982)指出,在阿拉斯加州,与碱金属矿化伴生的黑色页岩中的伊利石,其中有多达50%的K^+为NH_4^+所替代.Juster等人(1987)发现。A.Hall 方洁 1992地质科学译丛1992,9,2:0
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