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    • 33. 发明授权
    • Usage of poly-3-hydroxybutyrates in preparation of β-lactam compounds
    • 聚-3-羟基丁酸酯在制备β-内酰胺化合物中的用途
    • US07985857B2
    • 2011-07-26
    • US12280781
    • 2006-10-16
    • Weichuan LuQian ZhangXin Cheng
    • Weichuan LuQian ZhangXin Cheng
    • C07D205/08C07F7/18
    • C07D205/08C07F7/188
    • A method for preparing compounds having the formula(I) by using P(3HB), wherein R is R1, R2, R3 are lower linear or branched C1-C4 alkyl, comprising the steps of: a: obtaining (3R)-3-RO—CH(CH3)CH2COOCH3 by pyrolysis of P(3HB) and protection; b: obtaining (3R)-3-RO—CH(CH3)CH2CHO by reduction of (3R)-3-RO—CH(CH3)CH2COOCH3 ; c: enolizing (3R)-3-RO—CH(CH3)CH2CHO and then reacting with chlorosulfonyl isocyanate, at last getting the final product by reduction; wherein (3R)-3-RO—CH(CH3)CH2CHO is enolized by reacting (3R)-3-RO—CH(CH3)CH2CHO with isopropenyl acetate and p-toluenesulfonic acid by heating under reflux.
    • 通过使用P(3HB)制备具有式(I)的化合物的方法,其中R为R 1,R 2,R 3为低级直链或支链C 1 -C 4烷基,包括以下步骤:a:获得(3R)-3- RO-CH(CH3)CH2COOCH3通过热解P(3HB)和保护; b:通过还原(3R)-3 -OR-CH(CH3)CH2COOCH3获得(3R)-3 -OR-CH(CH 3)CH 2 CHO; c:烯化(3R)-3 -OR-CH(CH 3)CH 2 CHO,然后与氯磺酰基异氰酸酯反应,最后通过还原得到最终产物; 其中通过在回流下加热使(3R)-3 -OR-CH(CH 3)CH 2 CHO与乙酸异丙烯酯和对甲苯磺酸反应来使(3R)-3 -OR-CH(CH 3)CH 2 CHO烯醇化。
    • 35. 发明申请
    • METHOD AND DEVICE FOR DETACHING USER EQUIPMENT
    • 用于分离用户设备的方法和设备
    • US20110085517A1
    • 2011-04-14
    • US12971612
    • 2010-12-17
    • Yijun YuQian Zhang
    • Yijun YuQian Zhang
    • H04W36/00
    • H04W60/06H04W36/0022H04W36/14H04W76/30H04W76/32H04W76/34
    • A method and device for detaching a user equipment (UE) are disclosed in the present invention. The UE is registered with a mobility management entity (MME) in a packet switched (PS) network and a mobile switching center (MSC) in a circuit switched (CS) network. When the UE needs to detach from the PS network, the MSC receives a Detach Request with a Detach Type indicating the detaching from the PS network only; after receiving the Detach Request, the MSC deletes the context of the PS core network entity and clears the connection between the MSC and the MME. An MME for performing UE detachment is also disclosed in the present invention. The present invention helps reduce the time delay during the subsequent handover and quickly provide users with communications services, so as to improve user's experience and meet the carriers' requirements.
    • 在本发明中公开了一种用于分离用户设备(UE)的方法和设备。 UE被分配交换(PS)网络中的移动性管理实体(MME)和电路交换(CS)网络中的移动交换中心(MSC))注册。 当UE需要从PS网络分离时,MSC接收到具有分离类型的分离请求,指示仅从PS网络分离; MSC收到分离请求后,删除PS核心网实体的上下文,并清除MSC与MME之间的连接。 在本发明中还公开了用于执行UE分离的MME。 本发明有助于减少后续切换期间的时延,并迅速为用户提供通信服务,从而提高用户体验并满足运营商的需求。
    • 37. 发明申请
    • Context-Free Protocol for Enforcing Data Forwarding in Wireless Ad Hoc Networks
    • 在无线Ad Hoc网络中执行数据转发的无上下文协议
    • US20100260337A1
    • 2010-10-14
    • US12422722
    • 2009-04-13
    • Chengqi SongQian Zhang
    • Chengqi SongQian Zhang
    • H04L9/00H04L9/30
    • H04W12/04H04L9/0827H04L63/062H04L2209/80H04L2463/062H04W12/02
    • Described herein is a context-free protocol (i.e., the COFFEE protocol) for stimulating cooperation among selfish nodes. Various embodiments have the ability to transmit a packet over the path successfully without the dependency on the information of other packets' transmissions. It is assumed that every node in the network is rational, and therefore during the packet forwarding stage, if the intermediate nodes can not clearly tell whether the packet is destined to them or not, they do not simply drop the packet. Thus, in the COFFEE protocol, by introducing several techniques, for a packet received by a node, the node thinks the packet could potentially be destined to itself and forwards the packet to find out the answer. Detailed analysis and performance evaluations have been conducted to demonstrate the effectiveness of the COFFEE protocol.
    • 这里描述了用于刺激自私节点之间的协作的无上下文协议(即,COFFEE协议)。 各种实施例具有在路径上成功传送分组的能力,而不依赖于其他分组传输的信息。 假设网络中的每个节点都是合理的,因此在分组转发阶段,如果中间节点不能清楚地知道分组是否指定给它们,则它们不会简单地丢弃分组。 因此,在COFFEE协议中,通过引入几种技术,对于由节点接收的分组,节点认为分组可能潜在地注定到自身并转发分组以找出答案。 已经进行了详细的分析和绩效评估,以证明COFFEE协议的有效性。
    • 40. 发明申请
    • High efficiency, wet-base, downfired multi-pass water heater
    • 高效率,湿碱,低温多功能热水器
    • US20070181081A1
    • 2007-08-09
    • US11350443
    • 2006-02-09
    • Ozzie MissoumGregory WelkQian Zhang
    • Ozzie MissoumGregory WelkQian Zhang
    • F24H1/00
    • F24H1/206F24H8/00Y02B30/102
    • A fuel-fired water heater has a three-pass condensing type heat exchanger disposed within its tank and having a central vertical first pass flue pipe separated into upper and lower portions by an internal dividing structure. Respectively coupled to the upper and lower first pass flue pipe portions are circumferentially spaced series of vertical second and third pass flue pipes which circumscribe the central flue pipe within the tank. During firing of the water heater, combustion gases from a power burner are sequentially forced downwardly through the upper portion of the first pass flue pipe, upwardly through the second pass flue pipes to an upper plenum external to the tank, and then downwardly through the third pass flue pipes and the lower central pipe portion into a bottom plenum external to the tank for discharge from the water heater.
    • 燃料热水器具有设置在其罐内的三通冷凝型热交换器,并具有通过内部分隔结构分离成上部和下部的中央垂直第一通道烟道。 分别耦合到上,下第一通道烟道管部分是圆周间隔的一系列垂直的第二和第三通道烟道管,其围绕罐内的中央烟道管。 在热水器的燃烧期间,来自动力燃烧器的燃烧气体依次被迫向下通过第一通道烟道管的上部,向上通过第二通道烟道管,到罐外部的上部通风室,然后向下通过第三通道 通过烟道管和下中心管部分进入罐外部的底部增压室,以从热水器排出。