公开(公告)号：US20060166955A1

公开(公告)日：2006-07-27

申请号：US10561164

申请日：2004-06-14

Applicant: Weisheng Tian ,  Xin Xu ,  Shanshan Liu ,  Junwei Shen ,  Xiujing Wu

Inventor： Weisheng Tian ,  Xin Xu ,  Shanshan Liu ,  Junwei Shen ,  Xiujing Wu

IPC: A61K31/56 ,  C07J5/00

CPC classification number: C07J7/00 ,  C07J71/00

Abstract: The present invention relates to a clean process for the degradation of steroidal sapogenin to produce 16-dehydropregnenolone and its analogs. The pure or the crude pseudo steroidal sapogenin, derived from steroidal sapogenin, dissolved in organic solvent, reacts with hydrogen peroxide with or without metal compound and acid as catalyst, and the crude products directly go through elimination and hydrolization in the presence of base to give 16-Dehydropregnenolone or its analog, accompanied with the other product 4R(or S)-methyl-5-hydroxy-pentate, which is converted to 4R(or S)-methyl-δ-pentyl lactone after acidification and extraction from the water layer. This technology improved the utilizing degree of steroidal sapogenin, improved the yield, and cleared up the chromium pollution in the former technique. In a word, the method disclosed in this invention is more suitable for manufacture.

Abstract translation: 本发明涉及一种用于降解甾体皂苷元以产生16-脱氢孕烯醇酮及其类似物的清洁方法。 衍生自甾体皂苷元的纯的或粗制的假甾体皂苷元，溶于有机溶剂中，与或不与金属化合物和酸作为催化剂与过氧化氢反应，粗产物在碱存在下直接进行消除和水解，得到 伴随着另一种产物4R（或S） - 甲基-5-羟基 - 戊酸酯，其在酸化并从水层中提取后转化成4R（或S） - 甲基-δ-戊基内酯 。 该技术提高了甾体皂苷元的利用程度，提高了产量，并清除了前一种技术中的铬污染。 总而言之，本发明公开的方法更适合于制造。

公开(公告)号：US20060128433A1

公开(公告)日：2006-06-15

申请号：US11295609

申请日：2005-12-07

Applicant: Zongchuang Liang ,  Hua Chao ,  Xin Xu ,  Luoning Gui

Inventor： Zongchuang Liang ,  Hua Chao ,  Xin Xu ,  Luoning Gui

IPC: H04B1/38

CPC classification number: H04W68/025 ,  H04W4/06

Abstract: The present invention discloses a method of transmitting a notification indicator of multimedia broadcast/multicast services in wideband code-division multiple access, the method including: a step of extracting notification indicator information by a radio network controller from a notification message of the multimedia broadcast/multicast services; a step of transmitting the notification indicator information to physical layer and building a notification indicator channel frame via a frame protocol layer; and a step of transmitting the notification indicator channel frame to user terminals via a physical channel. According to the method of transmitting a notification indicator of the present invention, user terminals can accurately read the notification indicator within the time length of one frame, so that the false alarm ratio and transmission power of the notification indicator are reduced.

Abstract translation: 本发明公开了一种在宽带码分多址中发送多媒体广播/组播业务通知指示符的方法，该方法包括：通过无线网络控制器从多媒体广播/组播业务的通知消息中提取通知指示符信息的步骤， 多播服务; 将通知指示符信息发送到物理层并经由帧协议层构建通知指示符信道帧的步骤; 以及经由物理信道将通知指示符信道帧发送到用户终端的步骤。 根据发送本发明的通知指示符的方法，用户终端可以在一帧的时间长度内准确地读取通知指示符，从而减少通知指示符的误报率和发送功率。

公开(公告)号：US20060017536A1

公开(公告)日：2006-01-26

申请号：US10899831

申请日：2004-07-26

Applicant: Bu-Xin Xu

Inventor： Bu-Xin Xu

IPC: H01F3/00

CPC classification number: G01R33/421 ,  H01F6/00 ,  H01F27/365

Abstract: Systems, methods and apparatus are provided through which in some embodiments, a magnetic resonance imaging system includes a ferromagnetic shield positioned between main coils and bucking coils. The ferromagnetic shield reduces magnetic coupling between the main coils and the bucking coils, which provides for the main coils and bucking coils having a reduced size and cost.

Abstract translation: 提供了一种系统，方法和装置，在一些实施例中，磁共振成像系统包括位于主线圈和降压线圈之间的铁磁屏蔽。 铁磁屏蔽减少了主线圈和降压线圈之间的磁耦合，为主线圈和降压线圈提供了减小的尺寸和成本。

公开(公告)号：US06984982B2

公开(公告)日：2006-01-10

申请号：US10064589

申请日：2002-07-29

Applicant: Jinhua Huang ,  Bu-Xin Xu

Inventor： Jinhua Huang ,  Bu-Xin Xu

IPC: G01V3/00

CPC classification number: G01R33/3873

Abstract: Described herein is a method and system for shimming an MRI magnetic field generating assembly, wherein a plurality of shims are secured relative to a surface of the magnetic field generating assembly to at least partially correct inhomogeneities in the magnetic field generated by the magnetic field generating assembly. In one aspect, the shims are arranged along a plurality of concentric geometric shapes each having at least five sides. In an alternative aspect, the shims are arranged in a plurality of rows and columns, where the rows are normal to the columns. In another aspect, at least one of the shims is a flat plate of magnetic material including a top edge, a bottom edge, side edges, and face surfaces. The bottom edge is the proximal portion of the flat plate relative to the magnetic field generating assembly, the top edge is the distal portion of the flat plate relative to the magnetic field generating assembly, and the face surfaces are aligned with a direction of the magnetic field generated by the magnetic field generating assembly.

Abstract translation: 本文描述了一种用于匀场MRI磁场产生组件的方法和系统，其中多个垫片相对于磁场产生组件的表面固定，以至少部分地校正由磁场产生组件产生的磁场中的不均匀性 。 在一个方面，垫片沿着多个具有至少五个边的同心几何形状布置。 在替代方面，垫片被布置成多个行和列，其中行与垂直于列。 在另一方面，垫片中的至少一个是磁性材料的平板，包括顶部边缘，底部边缘，侧边缘和面部表面。 底边缘是相对于磁场产生组件的平板的近端部分，顶边缘是平板相对于磁场产生组件的远端部分，并且面表面与磁场方向一致 由磁场产生组件产生的磁场。

公开(公告)号：US20050171984A1

公开(公告)日：2005-08-04

申请号：US11002145

申请日：2004-12-03

Applicant: He Wang ,  Xin Xu ,  Xingjie Fan ,  Luoning Gui

Inventor： He Wang ,  Xin Xu ,  Xingjie Fan ,  Luoning Gui

IPC: H04J11/00 ,  H04J13/00 ,  H04J13/20 ,  H04W28/18 ,  H04W28/24 ,  H04W72/04 ,  H04W76/02 ,  H04L12/28

CPC classification number: H04W72/0486 ,  H04W28/18 ,  H04W28/24

Abstract: The present invention discloses a comprehensive dynamic management scheme of HS-DSCH channel codes, which comprises the steps of: determining a remainder HS-DSCH channel resource of a system when a new HS-DSCH bearer service request is received; calculating a required HS-DSCH channel resource for the new service request; comparing the current system remainder HS-DSCH channel resource with the required HS-DSCH channel resource for the new service request; determining whether there is a need to add new HS-DSCH channel codes based on comparison results, assigning new codes or switching the service request into DCH channel for data transmission in accordance with the actual usage of the current code tree; when the existing HS-DSCH bearer service is completed, calculating a current system HS-DSCH channel resource usage ratio and hysteresis then comparing it with a predefined threshold, and determining whether there is a need to withdraw channel codes based on the results of comparison. The dynamic resource management scheme according to the present invention is well suited for application to future HSDPA technology as the technology is broadly spreading by radio resource management algorithms of radio network controller.

Abstract translation: 本发明公开了一种HS-DSCH信道码综合动态管理方案，包括以下步骤：当收到新的HS-DSCH承载业务请求时，确定系统的余数HS-DSCH信道资源; 为新的服务请求计算所需的HS-DSCH信道资源; 将当前系统余数HS-DSCH信道资源与新服务请求所需的HS-DSCH信道资源进行比较; 基于比较结果确定是否需要添加新的HS-DSCH信道码，根据当前码树的实际使用情况分配新的码或将业务请求切换到DCH信道用于数据传输; 当现有HS-DSCH承载服务完成时，计算当前系统HS-DSCH信道资源使用率和迟滞，然后将其与预定义的阈值进行比较，并且基于比较结果确定是否需要撤销信道码。 根据本发明的动态资源管理方案，由于无线电网络控制器的无线电资源管理算法广泛地扩展了该技术，因此非常适用于将来的HSDPA技术。

公开(公告)号：US06809619B1

公开(公告)日：2004-10-26

申请号：US10686972

申请日：2003-10-16

Applicant: Bu-Xin Xu ,  Weijun Shen

Inventor： Bu-Xin Xu ,  Weijun Shen

IPC: G01V300

CPC classification number: G01R33/3873 ,  G01R33/383

Abstract: The present invention relates to a method and system for adjusting a magnetic center field of a magnetic field generator in an MRI. One embodiment of the presenting invention relates to a magnetic field generator system having a magnetic center field. This embodiment comprises opposing posts and opposing yokes connected to the opposing posts, where at least one of the posts has a spacer. At least one permanent magnetic block is connected to at least one of the opposing yokes. Further, at least one spacer is formed in at least one of the posts, the yokes and/or the permanent magnetic block.

Abstract translation: 本发明涉及一种用于调整MRI中的磁场发生器的磁场中心场的方法和系统。 本发明的一个实施例涉及一种具有磁场中心场的磁场发生器系统。 该实施例包括相对的柱和连接到相对的柱的相对的轭，其中至少一个柱具有间隔件。 至少一个永久磁块连接到至少一个相对的轭。 此外，在柱，轭和/或永磁块中的至少一个中形成至少一个间隔件。

公开(公告)号：US6157279A

公开(公告)日：2000-12-05

申请号：US419014

申请日：1999-10-13

Applicant: Evangelos Trifon Laskaris ,  Michael Anthony Palmo ,  Bu-Xin Xu ,  Michele Dollar Ogle ,  Bruce Campbell Amm

Inventor： Evangelos Trifon Laskaris ,  Michael Anthony Palmo ,  Bu-Xin Xu ,  Michele Dollar Ogle ,  Bruce Campbell Amm

IPC: G01R33/421 ,  A61B5/055 ,  G01R33/38 ,  G01R33/381 ,  G01R33/3815 ,  H01F6/00 ,  H01F7/20 ,  H01H5/00

CPC classification number: G01R33/421 ,  G01R33/3806 ,  G01R33/3815

Abstract: An open magnet useful in magnetic resonance imaging (MRI) applications. The magnet has two spaced-apart assemblies. Each assembly has a shielding coil located longitudinally outward from a main coil, a magnetizable member not carrying an electric current and spaced apart from and proximate the main and shielding coils, and a magnetizable pole piece spaced apart from the magnetizable member: The method of the invention generates a magnetic field in a first area between the two assemblies while shielding a second area not between the two assemblies from a stray magnetic field by creating the previously-described open magnet.

Abstract translation: 用于磁共振成像（MRI）应用的开放磁体。 磁体具有两个间隔开的组件。 每个组件具有从主线圈纵向向外定位的屏蔽线圈，不具有电流并且与主屏蔽线圈和屏蔽线圈间隔开并邻近的可磁化构件以及与可磁化构件间隔开的可磁化磁极片： 本发明在两个组件之间的第一区域中产生磁场，同时通过产生前述的开放磁体，将两个组件之间的第二区域与杂散磁场屏蔽。

公开(公告)号：US5994991A

公开(公告)日：1999-11-30

申请号：US199096

申请日：1998-11-24

Applicant: Evangelos Trifon Laskaris ,  Michael Anthony Palmo ,  Bu-Xin Xu ,  Michele Dollar Ogle ,  Bruce Campbell Amm

Inventor： Evangelos Trifon Laskaris ,  Michael Anthony Palmo ,  Bu-Xin Xu ,  Michele Dollar Ogle ,  Bruce Campbell Amm

IPC: G01R33/421 ,  A61B5/055 ,  G01R33/38 ,  G01R33/381 ,  G01R33/3815 ,  H01F6/00 ,  H01F7/20 ,  H01F1/00

CPC classification number: G01R33/421 ,  G01R33/3806 ,  G01R33/3815

Abstract: An open magnet useful in magnetic resonance imaging (MRI) applications. The magnet has two spaced-apart assemblies. Each assembly has a shielding coil located longitudinally outward from a main coil, a magnetizable member not carrying an electric current and spaced apart from and proximate the main and shielding coils, and a magnetizable pole piece spaced apart from the magnetizable member: The method of the invention generates a magnetic field in a first area between the two assemblies while shielding a second area not between the two assemblies from a stray magnetic field by creating the previously-described open magnet.

公开(公告)号：US5690991A

公开(公告)日：1997-11-25

申请号：US576707

申请日：1995-12-21

Applicant: Bu-Xin Xu ,  O'Neil T. McClam ,  Geer Ward

Inventor： Bu-Xin Xu ,  O'Neil T. McClam ,  Geer Ward

IPC: H01R43/02 ,  H01L39/02 ,  B05D1/18 ,  B05D5/12

CPC classification number: H01L39/02 ,  Y10S505/924 ,  Y10S505/925

Abstract: A method of forming a superconducting joint between the Nb.sub.3 Sn layer of a superconducting tape and a superconducting NbTi wire through use of a Pb-Bi bath, joint securing arrangement and mold around the joint.

Abstract translation: 通过使用Pb-Bi浴，在接头周围的接头固定装置和模具在超导带的Nb ​​3 Sn层和超导NbTi线之间形成超导接头的方法。

公开(公告)号：US5394130A

公开(公告)日：1995-02-28

申请号：US1692

申请日：1993-01-07

Applicant: Bu-Xin Xu ,  Raghavan Jayakumar ,  John J. Wollan

Inventor： Bu-Xin Xu ,  Raghavan Jayakumar ,  John J. Wollan

IPC: H01F6/06 ,  H01L39/20 ,  H01F1/00 ,  H01F7/06 ,  H01H47/00

CPC classification number: H01F6/06 ,  H01L39/20 ,  Y10S336/01 ,  Y10S505/879

Abstract: A stable superconducting switch suitable for use in a conduction-cooled superconducting magnet includes a tape wound in a coil with the tape including an Nb.sub.3 Sn conductor sandwiched between stabilizing layers of copper, bronze or brass and wound in layers, with groups of layers separated by a partial layer of electrically conductive material.

Abstract translation: 适合用于传导冷却超导磁体的稳定超导开关包括缠绕在线圈中的带，该带缠绕在包含铜，青铜或黄铜的稳定层之间的Nb3Sn导体，并以层缠绕，层被 部分导电材料层。