The multilayered polypropylene （PP） and poly（ethylene-co-octene） （POE） sheets were prepared by the microlayered co-extrusion system. The essential work of fracture （EWF） and the impact tensile methods have bee...The multilayered polypropylene （PP） and poly（ethylene-co-octene） （POE） sheets were prepared by the microlayered co-extrusion system. The essential work of fracture （EWF） and the impact tensile methods have been successfully used to evaluate the toughening behaviors of the PP/POE multilayered blends under quasi-static and dynamic uniaxial tensile stress, respectively. The experimental results indicate that the multilayered structure plays a key role in the toughening behaviors. On increasing the layer number of the multilayered blends, the specific essential work of fracture, we, increases obviously. As for the flwp, there is no obvious variation in the multilayered blends with low POE content （6.79%）, however, obvious enhancement is observed with increasing the layer number of the high POE content multilayered blends （16.57%）. Compared with the conventional blends, the multilayered blends with 6.79% POE content are effective to increase the value of we. Additionally, the multilayered blends with high layer numbers present absolute advantage in improving the impact tensile values.展开更多
The effects of oceanic forcing on the atmospheric low-frequency wave (LFW for short) in the tropics are analyzed, where ocean and atmosphere are taken as an independent system, respectively. Here oceanic effects are p...The effects of oceanic forcing on the atmospheric low-frequency wave (LFW for short) in the tropics are analyzed, where ocean and atmosphere are taken as an independent system, respectively. Here oceanic effects are parameterized as evaporation-wind feedback (EWF for short) and forcing of SST. Under the modulation of EWF, forcing of SST plays a different role from that without EWF, So LFWs are diabatic waves, forced by the interactions of multiple factors, in the tropics. Key words Atmospheric LFW - Oceanic forcing - EWF - Radiative cooling - SST This paper was supported by “ First Institute of Oceanic Sciences, State Oceanic Administration, State Key Laboratory of Geophysical Fluid Dynamics and Numerical Modeling”.展开更多
Sub-20 nm node bulk FinFET PMOS devices with an all-last high-k/metal gate （HK/MG） process are fabricated and the influence of a series of device parameters on the device scaling is investigated. The high and thin F...Sub-20 nm node bulk FinFET PMOS devices with an all-last high-k/metal gate （HK/MG） process are fabricated and the influence of a series of device parameters on the device scaling is investigated. The high and thin Fin structure with a tapered sidewall shows better performance than the normal Fin structure. The punch through stop layer （PTSL） and source drain extension （SDE） doping profiles are carefully optimized. The device without SDE annealing shows a larger drive current than that with SDE annealing due to better Si crystal regrowth in the amorphous Fin structure after source/drain implantation. The band-edged MG has a better short channel effect immunity, but the lower effective work function （EWF） MG shows a larger driveability. A tradeoff choice for different EWF MGs should be carefully designed for the device＇s scaling.展开更多
在介绍DRM(Digital Radio Mondiale)数字广播技术标准及优势的基础上,对其EWF(Emergency WarningFunctionality)应急预警功能进行概述,分析了DRM在危机和灾难时期可发挥的应用价值,最后从DRM在应急预警中的应用与发展情况出发,对我国DR...在介绍DRM(Digital Radio Mondiale)数字广播技术标准及优势的基础上,对其EWF(Emergency WarningFunctionality)应急预警功能进行概述,分析了DRM在危机和灾难时期可发挥的应用价值,最后从DRM在应急预警中的应用与发展情况出发,对我国DRM发展提出几点建议。展开更多
介绍了一种基于XPE的嵌入式DVR系统的设计与实现方法。该系统采用英特尔凌动处理器作为硬件平台,采用Win-dows XP Embedded with SP2作为软件平台,能有效克服目前嵌入式DVR处理性能有限而PC式DVR配机繁琐与兼容性问题及不稳定因素。详...介绍了一种基于XPE的嵌入式DVR系统的设计与实现方法。该系统采用英特尔凌动处理器作为硬件平台,采用Win-dows XP Embedded with SP2作为软件平台,能有效克服目前嵌入式DVR处理性能有限而PC式DVR配机繁琐与兼容性问题及不稳定因素。详细介绍了XPE操作系统的开发过程以及FBWF写保护功能的原理和实现方法。基于该方案设计的嵌入式DVR系统经过实际测试,达到了预期的设计效果。展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.51273132,51227802 and 51121001)Program for New Century Excellent Talents in Universities(No.NCET-13-0392)
文摘The multilayered polypropylene （PP） and poly（ethylene-co-octene） （POE） sheets were prepared by the microlayered co-extrusion system. The essential work of fracture （EWF） and the impact tensile methods have been successfully used to evaluate the toughening behaviors of the PP/POE multilayered blends under quasi-static and dynamic uniaxial tensile stress, respectively. The experimental results indicate that the multilayered structure plays a key role in the toughening behaviors. On increasing the layer number of the multilayered blends, the specific essential work of fracture, we, increases obviously. As for the flwp, there is no obvious variation in the multilayered blends with low POE content （6.79%）, however, obvious enhancement is observed with increasing the layer number of the high POE content multilayered blends （16.57%）. Compared with the conventional blends, the multilayered blends with 6.79% POE content are effective to increase the value of we. Additionally, the multilayered blends with high layer numbers present absolute advantage in improving the impact tensile values.
基金This paper was supported by" First Institute of Oceanic Sciences, State Oceanic Administration, StateKey Laboratory of Geophys
文摘The effects of oceanic forcing on the atmospheric low-frequency wave (LFW for short) in the tropics are analyzed, where ocean and atmosphere are taken as an independent system, respectively. Here oceanic effects are parameterized as evaporation-wind feedback (EWF for short) and forcing of SST. Under the modulation of EWF, forcing of SST plays a different role from that without EWF, So LFWs are diabatic waves, forced by the interactions of multiple factors, in the tropics. Key words Atmospheric LFW - Oceanic forcing - EWF - Radiative cooling - SST This paper was supported by “ First Institute of Oceanic Sciences, State Oceanic Administration, State Key Laboratory of Geophysical Fluid Dynamics and Numerical Modeling”.
基金supported by the National 02 IC Projectsthe Opening Project of Key Laboratory of Microelectronics Devices & Integrated Technology,Institute of Microelectronics,Chinese Academy of Sciences
文摘Sub-20 nm node bulk FinFET PMOS devices with an all-last high-k/metal gate （HK/MG） process are fabricated and the influence of a series of device parameters on the device scaling is investigated. The high and thin Fin structure with a tapered sidewall shows better performance than the normal Fin structure. The punch through stop layer （PTSL） and source drain extension （SDE） doping profiles are carefully optimized. The device without SDE annealing shows a larger drive current than that with SDE annealing due to better Si crystal regrowth in the amorphous Fin structure after source/drain implantation. The band-edged MG has a better short channel effect immunity, but the lower effective work function （EWF） MG shows a larger driveability. A tradeoff choice for different EWF MGs should be carefully designed for the device＇s scaling.
文摘在介绍DRM(Digital Radio Mondiale)数字广播技术标准及优势的基础上,对其EWF(Emergency WarningFunctionality)应急预警功能进行概述,分析了DRM在危机和灾难时期可发挥的应用价值,最后从DRM在应急预警中的应用与发展情况出发,对我国DRM发展提出几点建议。
文摘介绍了一种基于XPE的嵌入式DVR系统的设计与实现方法。该系统采用英特尔凌动处理器作为硬件平台,采用Win-dows XP Embedded with SP2作为软件平台,能有效克服目前嵌入式DVR处理性能有限而PC式DVR配机繁琐与兼容性问题及不稳定因素。详细介绍了XPE操作系统的开发过程以及FBWF写保护功能的原理和实现方法。基于该方案设计的嵌入式DVR系统经过实际测试,达到了预期的设计效果。
