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    • 15. 发明申请
    • REDUCTION OF ENDOTOXIN IN POLYSIALIC ACIDS
    • 减少多糖中的内毒素
    • US20110159130A1
    • 2011-06-30
    • US12528763
    • 2008-02-28
    • Sanjay JainPeter LaingGregory Gregoriadis
    • Sanjay JainPeter LaingGregory Gregoriadis
    • A61K35/74C07K14/00C12P21/06
    • C08B37/0006B01D15/363C08B37/0003
    • The present invention relates to process for reducing the endotoxin content of a sample of fermentation broth containing polysialic acid and endotoxin comprising the sequential steps: (i) adding to the sample a base having a pKa of at least 12 to form a basic solution having a pH of at least 12, incubating the solution for a pre-determined time at a pre-determined temperature; and (ii) recovery of PSA, suitably by (iii) passing the sample through an anion-exchange column whereby polysialic acid is absorbed on the ion exchange resin; (iv) washing the column with one washing buffer, whereby polysialic acid remains absorbed on the ion exchange resin; and (v) eluting the polysialic acid from the column using an elution buffer to provide a product solution of polysialic acid having reduced endotoxin content.
    • 本发明涉及降低含有唾液酸和内毒素的发酵肉汤样品的内毒素含量的方法,其包括以下顺序步骤:(i)向样品中加入pKa至少为12的碱,以形成具有 pH至少为12,在预定温度下将溶液温育预定时间; 和(ii)PSA的回收,适当地通过(iii)使样品通过阴离子交换柱,由此唾液酸被吸收在离子交换树脂上; (iv)用一个洗涤缓冲液洗涤该柱,由此聚唾液酸保持吸收在离子交换树脂上; 和(v)使用洗​​脱缓冲液从柱洗脱聚唾液酸以提供具有降低的内毒素含量的聚唾液酸的产物溶液。
    • 16. 发明授权
    • Hardware-based rate control for bursty traffic
    • 突发性流量的基于硬件的速率控制
    • US07652988B2
    • 2010-01-26
    • US10446419
    • 2003-05-28
    • Sanjay JainDeepak AatreshDaniel M. Hegglin
    • Sanjay JainDeepak AatreshDaniel M. Hegglin
    • H04L12/26
    • H04L47/10
    • A hardware-based rate control engine is designed to allow credits to be accumulated over multiple time-slices up to a maximum credit limit. The rate control engine is also allowed to dispatch packets up to a maximum drain rate during each time-slice as long as sufficient credits are available. Allowing credits to accumulate over multiple time slices allows unused bandwidth to be saved during times of little or no traffic and used when the subsequent traffic bursts arrive. Additionally, limiting the maximum drain rate puts a cap on how fast the saved bandwidth can be consumed by subsequent traffic bursts. The rate control settings can be adapted in response to a characteristic, or characteristics, of the traffic flow. For example, one group of settings of a traffic flow can be used for bursty traffic, while a different group of settings can be used for smooth traffic.
    • 基于硬件的速率控制引擎被设计为允许在多个时间片上积累信用以达到最大信用限额。 只要有足够的信用额度,速率控制引擎也可以在每个时间片段内调度数据包,达到最大排放速率。 允许信用累积多个时间片允许在很少或没有流量的时间内保存未使用的带宽,并且在随后的业务突发到达时使用。 另外,限制最大漏极率可以说明随后的业务脉冲串可以节省多长时间的带宽。 速率控制设置可以响应于业务流的特性或特性进行调整。 例如,流量的一组设置可以用于突发流量,而不同的设置组可用于平滑流量。