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公开(公告)号：US5536830A
公开(公告)日：1996-07-16
申请号：US453911
申请日：1995-05-30
IPC分类号： C07D501/00 , C07D501/04
CPC分类号： C07D501/00
摘要： A process for converting cephalosporin p-nitrobenzyl ester (Formula I) to the corresponding cephalosporin free acid (Formula II) comprising treating the cephalosporin p-nitrobenzyl ester with a metal selected from the group consisting of iron, magnesium, aluminum, and tin, and with hydrochloric acid in a mixture of water and a water-miscible organic solvent. Preferably, the metal is iron in the form of a fine powder, and the reaction is carried out at a temperature in the range of 30.degree.-50.degree. C.
摘要翻译： 一种将头孢菌素对硝基苄基酯（式I）转化成相应的头孢菌素游离酸（式II）的方法，包括用选自铁，镁，铝和锡的金属处理头孢菌素对硝基苄酯，以及 用盐酸与水和水混溶的有机溶剂的混合物。 优选地，金属是细粉末形式的铁，并且反应在30-50℃的温度下进行。
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公开(公告)号：US09000150B2
公开(公告)日：2015-04-07
申请号：US13880010
申请日：2011-10-21
申请人： Prashant Kumar Sharma , Bhupendra Vashishta , Shailendra K. Singh , Neera Tiwari , Subhash Dhar
发明人： Prashant Kumar Sharma , Bhupendra Vashishta , Shailendra K. Singh , Neera Tiwari , Subhash Dhar
IPC分类号： C07D477/20
CPC分类号： C07D477/20
摘要： The present invention relates to a process for the preparation of pure meropenem trihydrate.
摘要翻译： 本发明涉及一种制备纯美罗培南三水合物的方法。
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公开(公告)号：US20130253184A1
公开(公告)日：2013-09-26
申请号：US13880010
申请日：2011-10-21
申请人： Prashant Kumar Sharma , Bhupendra Vashishta , Shailendra K. Singh , Neera Tiwari , Subhash Dhar
发明人： Prashant Kumar Sharma , Bhupendra Vashishta , Shailendra K. Singh , Neera Tiwari , Subhash Dhar
IPC分类号： C07D477/20
CPC分类号： C07D477/20
摘要： The present invention relates to a process for the preparation of pure meropenem trihydrate.
摘要翻译： 本发明涉及一种制备纯美罗培南三水合物的方法。
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公开(公告)号：US20120093241A1
公开(公告)日：2012-04-19
申请号：US13273916
申请日：2011-10-14
IPC分类号： H04B15/00
摘要： Alien noise is removed from one or more receptor DSL lines after self-FEXT has been eliminated or reduced. Information about the alien noise in the form of slicer errors can be obtained from one or more donor DSL lines that may or may not be in the same domain (e.g., a vectored DSL system).
摘要翻译： 在自动FEXT被消除或减少之后，外部噪声从一个或多个受体DSL线路上移除。 关于限幅器错误形式的外来噪声的信息可以从一个或多个施主DSL线路获得，该线路可以是或不在同一域（例如矢量DSL系统）。
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公开(公告)号：US08848504B2
公开(公告)日：2014-09-30
申请号：US13273916
申请日：2011-10-14
摘要： Alien noise is removed from one or more receptor DSL lines after self-FEXT has been eliminated or reduced. Information about the alien noise in the form of slicer errors can be obtained from one or more donor DSL lines that may or may not be in the same domain (e.g., a vectored DSL system).
摘要翻译： 在自动FEXT被消除或减少之后，外部噪声从一个或多个受体DSL线路上移除。 关于限幅器错误形式的外来噪声的信息可以从一个或多个施主DSL线路获得，该线路可以是或不在同一域（例如矢量DSL系统）。
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公开(公告)号：US08767521B2
公开(公告)日：2014-07-01
申请号：US12807524
申请日：2010-09-08
IPC分类号： H04J1/12
CPC分类号： H04M11/062 , H04B3/32 , H04B3/487 , H04M3/304 , H04M3/306 , H04M3/34 , H04M2203/056
摘要： A system for performing a single ended line test (SELT) of a selected subscriber line within a bundle of in-service subscriber lines each supporting frequency division multiplexed multi-tone modulated XDSL communications. The system comprises: a crosstalk cancellation module and a SELT module. The crosstalk cancellation module is coupled to the subscriber lines and configured to cancel crosstalk between the selected subscriber line under test and the in-service subscriber lines. The SELT module couples to the crosstalk cancellation module and is configured to coordinate SELT testing with the crosstalk cancellation module to cancel crosstalk between the selected subscriber line and the in-service subscriber lines during testing.
摘要翻译： 一种用于在支持频分复用多音调调制的XDSL通信的一连串在用用户线路中执行所选用户线路的单端测试（SELT）的系统。 该系统包括：串扰消除模块和SELT模块。 串扰消除模块耦合到用户线路并且被配置为消除所选择的被测试用户线路与在线用户线路之间的串扰。 SELT模块耦合到串扰消除模块，并配置为与串扰消除模块协调SELT测试，以在测试期间消除所选用户线路和在用用户线路之间的串扰。
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公开(公告)号：US08817857B2
公开(公告)日：2014-08-26
申请号：US13189666
申请日：2011-07-25
摘要： Residual FEXT resulting from intended and/or inherent partial cancellation of crosstalk in vectored DSL systems impairs upstream power back-off (UPBO) as traditionally implemented. By considering and taking into account the effects of residual crosstalk on vectored DSL system performance and operation, improved data rates and/or other vectored DSL system performance are realized through the use of UPBO parameters generated for a given residual FEXT environment.
摘要翻译： 由于矢量DSL系统中串扰的预期和/或固有部分消除而导致的剩余FEXT损害了传统实现的上游功率回退（UPBO）。 通过考虑并考虑残留串扰对矢量DSL系统性能和操作的影响，通过使用为给定的剩余FEXT环境生成的UPBO参数来实现改进的数据速率和/或其他矢量DSL系统性能。
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公开(公告)号：US20110058468A1
公开(公告)日：2011-03-10
申请号：US12807524
申请日：2010-09-08
IPC分类号： H04J1/12
CPC分类号： H04M11/062 , H04B3/32 , H04B3/487 , H04M3/304 , H04M3/306 , H04M3/34 , H04M2203/056
摘要： A system for performing a single ended line test (SELT) of a selected subscriber line within a bundle of in-service subscriber lines each supporting frequency division multiplexed multi-tone modulated XDSL communications. The system comprises: a crosstalk cancellation module and a SELT module. The crosstalk cancellation module is coupled to the subscriber lines and configured to cancel crosstalk between the selected subscriber line under test and the in-service subscriber lines. The SELT module couples to the crosstalk cancellation module and is configured to coordinate SELT testing with the crosstalk cancellation module to cancel crosstalk between the selected subscriber line and the in-service subscriber lines during testing.
摘要翻译： 一种用于在支持频分复用多音调调制的XDSL通信的一连串在用用户线路中执行所选用户线路的单端测试（SELT）的系统。 该系统包括：串扰消除模块和SELT模块。 串扰消除模块耦合到用户线路并且被配置为消除所选择的被测试用户线路与在线用户线路之间的串扰。 SELT模块耦合到串扰消除模块，并配置为与串扰消除模块协调SELT测试，以在测试期间消除所选用户线路和在用用户线路之间的串扰。
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