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28篇 您的检索式:作者名="Oldknow"
    题名 作者 年代 出处 被引量
1河西走廊史前文化年代的完善及其对重新评估人与环境关系的启示显示文摘史前文化高分辨率年代的重建是理解人类演化及其与环境变化关系的前提,对探索史前跨大陆文化交流的轨迹具有重要意义.河西走廊是史前世界最早的远距离文化交流中心之一.由于缺乏14C年代的控制,该地区史前文化的年代及序列仍不清楚.本文提供了一个更加精确的14C年代序列以解决河西走廊地区人类定居和文化演化的时间问题.一年生的炭化农作物遗存14C测年具有避免'老木效应'的优点,因此被用来检测河西走廊已有的炭屑和骨骼14C年代的可靠性.在此基础上所得的14C数据集用贝叶斯方法进行建模,模型年代显示其与河西走廊已有的考古文化年代基本一致.然而,青铜时代晚期-铁器时代早期的沙井文化和骟马文化的年代比已有的年代晚约300年.通过对比模型年代与古气候和历史文献资料,我们认为沙井和骟马文化的衰落是受地缘格局的影响而不是气候变化导致的.杨谊时 张山佳 Chris OLDKNOW 仇梦晗 陈亭亭 黎海明 崔一付 任乐乐 陈国科 王辉 董广辉 2019中国科学:地球科学2019,49,12:5
2Refined chronology of prehistoric cultures and its implication for re-evaluating human-environment relations in the Hexi Corridor,northwest China显示文摘The reconstruction of high-resolution chronologies for prehistoric cultures is a prerequisite for understanding the history of human evolution and its relationship with environmental change, and is valuable for exploring the trajectory of transcontinental cultural exchanges in prehistoric time. The Hexi Corridor of northwest China was one of the earliest centers for long-distance culture exchange in the prehistoric world. The timing and sequence of cultural changes in this area remains poorly understood resulting from the lack of radiometric age control. This paper presents a refined radiocarbon(14 C) chronology to resolve the timing of human occupation and cultural evolution in the Hexi Corridor. Radiocarbon dating of crop remains, which have an annual life cycle, has the advantage of eliminating problems such as the carbon stored in ‘old wood’. As a result,14C dates from crop remains are used to test the validity of the14C dates derived from charcoal, bone and plant remains. The resultant database of ages is modelled using the Bayesian approach. The updated chronology presented in this paper shows generally good agreement with the original dates used to constrain cultural evolution in the Hexi Corridor. However, the occupation of the corridor by the Shajing and Shanma Late Bronze Age-Early Iron Age cultures appears to have taken place ~300 years later than previously thought. On the basis of comparing this updated chronology of cultural evolution with palaeoclimatic and historical records, it is proposed that the collapse of the Shajing and Shanma cultures occurred as a result of geopolitical impact rather than climate change.Yishi YANG Shanjia ZHANG Chris OLDKNOW Menghan QIU Tingting CHEN Haiming LI Yifu CUI Lele REN Guoke CHEN Hui WANG Guanghui DONG 2019Science China Earth Sciences2019,62,10:5
3The effects of top of rail friction modifier on wear and rolling contact fatigue: Full-scale rail–wheel test rig evaluation, analysis and modelling显示文摘Donald T. Eadie Dave Elvidge Kevin Oldknow Richard Stock Peter Pointner Joe Kalousek Peter Klauser 2008Wear2008,,9:1
4The effects of top of rail friction modifier on wear and rolling contact fa- tigue: Full-scale rail-wheel test rig evaluation, analysis and modeling显示文摘EADIE D T ELVIDC-E D OLDKNOW K 2008Wear2008,265,910:1
5The effects of top of rail friction modifier on wear and rolling contact fatigue: Full-scale rail-wheel test rig evaluation, analysis and modeling显示文摘EADIE D T ELVIDGE D OLDKNOW K 2008Wear2008,265,:1
6Design, implementation and validation of a system for the dynamic reconfigu- ration of open architecture machine tool controls显示文摘Oldknow K D Yellowley I 2001International Journal of Machine Tools : Manufac- ture2001,41,6:1
7Three-dimensional dynamic interpolation using stateline based control architectures显示文摘Oldknow K D Yellowley I 2002International Journal of Machine Tools & Manufacture2002,42,8:1
8The design, implementation and validation of a system for the dynamic reconfiguration of open architecture machine tool controls显示文摘OLDKNOW K D YELLOWLEY L 2001International Journal of Machine Tools & Manufacture2001,41,6:1
9SLR1 Function is Dispensable for Both Self-Incompatible Rejection andSelf-Compatible Pollination Processes in Brassica 显示文摘FRANKLIN T M OLDKNOW J TRICK M 1996Sex Plant Reprod1996,9,4:1
10Design,implementation and validation of a system for the dynamic reconfiguration of open architecture machine tool controls显示文摘Oldknow K D Yellowley I 2001International Journal of Machine Tools and Manufacture2001,41,6:1
11Field studies of the effect of friction modifiers on short pitch corrugation generation in curves显示文摘EADIE D T SANTORO M OLDKNOW K 2008Wear2008,265,:1
12Rail grade slection and friction maganment: a combined approach for optimising rail-wheel contact显示文摘STOCK R EADIE D OLDKNOW K 2013Ironmaking & Steelmaking2013,40,2:1
13Field studies of the effect of friction modifiers on short pitch corrugation generation in curves显示文摘DONALD T EADIE MARCO SANTORO KEVIN OLDKNOW 0,,9:1
14A guide to modern quantitative fluorescent Western blotting with troubleshooting strategies显示文摘Eaton SL Hurtado ML Oldknow KJ Graham LC Marchant TW Gillingwater TH 2014J Vis Exp2014,20,52:1
15Field Studies of the Effect of Friction Modifiers on Short Pitch Corrugation Generation显示文摘Eadie D Santoro M Oldknow K 2006Wear2006,,265:1
16How can Teaching Aids Improve the Quality of Mathematics Education 显示文摘Afzal Ahmed Alison Clark-Jeavons Adrian Oldknow 2004Educational Studies in Mathematics2004,,56:1
17Design,implementation and validation of a system for the dynamic reconfiguration of open architecture machine tool controls显示文摘Oldknow K D Yellowley I 2001International Journal of Machine Tools and Manufacture2001,41,6:1
18Field studies of the effect of friction modifiers on short pitch corrugation generation in curves显示文摘Eadie D T Santoro M Oldknow K 2008Wear2008,265,:1
19How can Teaching Aids Improve the Quality of Mathematics Education 显示文摘Afzal Ahmed Alison Clark-Jeavons Adrian Oldknow 2004Educational Studies in Mathematics2004,,56:1
20Design, Implementation and Validation of a System for the Dynamic Reconfiguration of Open Architecture Machine Tool Controls显示文摘Oldknow K D Yellowley I 2001Machine Tools & Manufacture2001,41,6:1
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