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| 1 | 若尔盖高原全新世气候变化的泥炭记录与加速器放射性碳测年显示文摘对若尔盖高原泥炭沉积的可靠加速器(AMS)~14C测年和分辨率达15~30年夏季风气候代用指标序列的建立,揭示了青藏高原全新世的多次干冷事件.其中较为显著的事件分别为12800,11300,10200,9580, 8900, 6400, 4400, 3700, 2800, 1500 aBP(校正年龄),它们既可与高纬北大西洋浮冰碎屑事件一一对比,又可与低纬海面的一些降温事件相对应.频谱分析表明全新世的高频变化具有百年至千年尺度的准周期,反映了全新世气候的不稳定性以及百年至千年尺度的韵律在中纬度地区同样存在. | 周卫建 卢雪峰 武振坤 邓林 A.J.T.Jull D.Donahue W.Beck | 2001 | 科学通报2001，46，12： | 109 |
| 2 | Peat record reflecting Holo-cene climatic change in the Zoige Plateau and AMS radiocarbon dating显示文摘Through the use of reliable AMS dating of high resolution (15-30 years) peat and the establishment of monsoon climate proxies sequence, we have been able to recognize several cold, dry events in the Tibetan Plateau during the Holocene. The more obvious ones occurred around 12800, 11300, 10200, 9580, 8900, 6400, 4400, 3700, 2800 and 1500 cal. aBP. These events correlate well with both ice rafting events recorded in high latitude North Atlantic Ocean sediment cores and cooling events in the low latitude SST. Spectral analysis indicates high frequency climate variation on centennial-millennial time scale during the Holocene. This further reflects Holocene climate instability and the existence of centennial-millenium scale rhythm in mid latitude areas as well. | ZHOU Weijian LU Xuefeng WU Zhengkun DENG Lin A.J.T.Jull D.Donahue W.Beck | 2002 | Chinese Science Bulletin2002，47，1： | 68 |
| 3 | Design of a water curtain to reduce accumulations of float coal dust in longwall returns显示文摘Accumulation of float coal dust(FCD)in underground mines is an explosion hazard that affects all underground coal mine workers.While this hazard is addressed by the application of rock dust,inadequate rock dusting practices can leave miners exposed to an explosion risk.Researchers at the National Institute for Occupational Safety and Health(NIOSH)have focused on developing a water curtain that removes FCD from the airstream,thereby reducing the buildup of FCD in mine airways.In this study,the number and spacing of the active sprays in the water curtain were varied to determine the optimal configuration to obtain peak knockdown efficiency(KE)while minimizing water consumption. | Clara E.Seaman Michael R.Shahan Timothy W.Beck Steven E.Mischler | 2020 | International Journal of Mining Science and Technology2020，30，4： | 4 |
| 4 | 洞穴次生碳酸盐中“死碳”对^(14)C法测年的影响显示文摘通过加速器质谱 C 法测年和不平衡铀系热电离质谱(TIMS)法测年结果的对比, 结合已发表的 1414C 法测年结果和对应的日历年代, 研究了特定的洞穴次生碳酸盐沉积中“死碳”混入比例及其对 C 14法测年的影响. 结果表明, 洞穴次生碳酸盐中“死碳”混入比例变化较大; “死碳”混入比例的不确定使得洞穴次生碳酸盐的 C 法测年结果具有较大的误差. 在对经过老灰岩地层形成的洞穴石笋样品进行 C 14 14或 AMS14C 法定年时, 要充分考虑“死碳”对年龄可靠性的影响. | 蔡演军 彭子成 W.Beck 张兆峰 | 2005 | 科学通报2005，50，5： | 3 |
| 5 | PRISMS-PF:A general framework for phase-field modeling with a matrix-free finite element method显示文摘A new phase-field modeling framework with an emphasis on performance,flexibility,and ease of use is presented.Foremost among the strategies employed to fulfill these objectives are the use of a matrix-free finite element method and a modular,application-centric code structure.This approach is implemented in the new open-source PRISMS-PF framework.Its performance is enabled by the combination of a matrix-free variant of the finite element method with adaptive mesh refinement,explicit time integration,and multilevel parallelism.Benchmark testing with a particle growth problem shows PRISMS-PF with adaptive mesh refinement and higher-order elements to be up to 12 times faster than a finite difference code employing a second-order-accurate spatial discretization and first-order-accurate explicit time integration. | Stephen DeWitt Shiva Rudraraju David Montiel W.Beck Andrews Katsuyo Thornton | 2020 | npj Computational Materials2020，，1： | 2 |
| 6 | 高速切削和高性能刀具可缩短加工工时显示文摘近年来,高速切削的成功应用以及切割材料、刀具及机床等的新发展,使高速切削能更多地用于精密加工。在此,刀具起着决定性的作用。 | Hans W.Beck | 1997 | 世界制造技术与装备市场1997，0，S1： | 1 |
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