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    • 13. 发明申请
    • Fire-Resistant Cellulosic Material
    • 耐火纤维素材料
    • US20140121306A1
    • 2014-05-01
    • US14128332
    • 2012-07-04
    • Minh-Tan Ton-ThatTri-Dung NgoJohanne DenaultChristian BelangerWei Hu
    • Minh-Tan Ton-ThatTri-Dung NgoJohanne DenaultChristian BelangerWei Hu
    • C08K3/28C08K3/10C08L33/04C08L73/00C08L23/12C08L63/00C08K3/22C08K3/16
    • C08K3/28C08B15/10C08K3/10C08K3/16C08K3/22C08L23/12C08L33/04C08L61/06C08L63/00C08L67/06C08L73/00C09K21/02D06M11/155D06M11/17D06M11/36D06M11/38C08L97/02
    • A new approach for improving fire resistance of cellulosic materials is provided, especially when the cellulosic material is to be used in polymer composites. Cellulosic material is treated with an aqueous mixture of alkali metal or ammonium hydroxide and alkaline earth or aluminum metal salt simultaneously with or within a short period of time of preparing the mixture. The treated cellulosic material becomes self-extinguishing and may also have improved thermal stability, improved interfacial thermal resistance, improved resistance to damage by oxidants and other chemical agents, improved resistance to biological agents and/or improved resistance to damage by ultra-violet light. The fire-resistant cellulosic material may also be treated with a layered nanoparticulate material either simultaneously with, subsequent to or prior to treatment with the aqueous mixture of alkali metal or ammonium hydroxide and alkaline earth or aluminum metal salt to impart further fire resistance to the cellulosic material. Polymer composites produced from cellulosic material treated according to the present invention have significantly improved fire resistance with small negative impact on the mechanical performance of the composite, and may have the added benefit of improved thermal stability, improved interfacial thermal resistance, improved resistance to damage by oxidants and other chemical agents, improved resistance to biological agents and/or improved resistance to damage by ultra-violet light.
    • 提供了一种改善纤维素材料耐火性的新方法,特别是当纤维素材料用于聚合物复合材料时。 纤维素材料在制备混合物的同时或在短时间内与碱金属或氢氧化铵和碱土金属或铝金属盐的水性混合物一起处理。 经处理的纤维素材料变为自熄性并且还可以具有改善的热稳定性,改善的界面热阻,改善的抗氧化剂和其它化学试剂的损伤性,改善的对生物制剂的抵抗力和/或改善的抗紫外线损伤性。 耐火纤维素材料也可以与层状纳米颗粒材料同时处理,之后或之前用碱金属或氢氧化铵和碱土金属或铝金属盐的水性混合物处理,以赋予纤维素更高的耐火性 材料。 根据本发明处理的由纤维素材料生产的聚合物复合材料具有显着改善的耐火性,并且对复合材料的机械性能具有小的负面影响,并且可以具有改进的热稳定性,改进的界面热阻,改善的耐损伤性的附加益处 氧化剂和其他化学试剂,改善的对生物制剂的抵抗力和/或改善的抗紫外线损伤的能力。
    • 15. 发明授权
    • High-performance log-based processing
    • 高性能的基于日志的处理
    • US08566326B2
    • 2013-10-22
    • US10982135
    • 2004-11-05
    • Wei HuYunrui LiVinay SrihariRamana Yemeni
    • Wei HuYunrui LiVinay SrihariRamana Yemeni
    • G06F17/30
    • G06F9/46G06F11/1464G06F11/1471G06F11/2035G06F11/2046G06F11/2097G06F2201/80
    • Each of a plurality of Worker processes are allowed to perform any and all of the following tasks involving logged work items: (1) reading a subset of the work items from a log; (2) sequentially ordering work items for corresponding data objects; (3) applying a sequentially ordered set of work items to a corresponding data object; and (4) transmitting a subset of work items to a Worker process running on another database server in a cluster, if necessary. These tasks can be performed concurrently, at will, and as available, by the Worker processes. An improved checkpointing technique eliminates the need for the Worker processes to get to a synchronization point and stop. Instead, a Coordinator process examines the current state of progress of the Worker processes and computes a past point in the sequence of work items at which all work items before that point have been completely processed, and records this point as the checkpoint.
    • 允许多个Worker进程中的每一个执行涉及记录的工作项的任何和所有以下任务:(1)从日志读取工作项的子集; (2)顺序排列相应数据对象的工作项; (3)将顺序排列的工作项集合应用于对应的数据对象; (4)如果需要,将工作项的子集发送到在群集中的另一数据库服务器上运行的工作进程。 这些任务可以在工作进程的同时,随意和可用的情况下执行。 改进的检查点技术消除了Worker进程到达同步点并停止的需要。 相反,协调器进程将检查工作进程的当前状态,并计算工作项序列中的过去点,在此之前,该点之前的所有工作项都已完全处理,并将此点记录为检查点。