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340 条记录 (耗时 0.031 秒)

    Guided Wave Non-Destructive Testing Using Magnetostrictive Sensor with Moving Magnet and Partial Activation of Magnetostrictive Strip
    1.
    发明公开
    Guided Wave Non-Destructive Testing Using Magnetostrictive Sensor with Moving Magnet and Partial Activation of Magnetostrictive Strip 审中-公开

    公开(公告)号：US20240027403A1

    公开(公告)日：2024-01-25

    申请号：US18357142

    申请日：2023-07-23

    申请人： Sergey Vinogradov ,  Xin Chen ,  Jay Fisher

    发明人： Sergey Vinogradov ,  Xin Chen ,  Jay Fisher

    IPC分类号： G01N29/24 ,  G01N29/265

    CPC分类号： G01N29/2412 ,  G01N29/265 ,  G01N2291/044 ,  G01N2291/0422

    摘要： A “partial activation” method of magnetostrictive guided wave testing of a structure. A coil-wrapped magnetostrictive strip is acoustically coupled to the surface of the structure. A permanent magnet is placed over a portion of the strip, such that the permanent magnet covers all or most of the width of the strip but only a portion of its length. A pulsed alternating current source activates the magnetostrictive strip, thereby producing magnetostrictive vibrations in the magnetostrictive strip, and thereby resulting in guided waves in the structure. Response signals are received, then the permanent magnet is moved to a next position along the length of the magnetostrictive strip. As the magnet is moved along the strip, the strip is activated and response signals are received, thereby testing a desired portion of the structure under the strip. The response signals are analyzed to determine the presence of anomalies in the structure.

    Synchronization method and system for single event list type data in PET imaging
    3.
    发明授权
    Synchronization method and system for single event list type data in PET imaging 有权

    公开(公告)号：US10930031B2

    公开(公告)日：2021-02-23

    申请号：US14408935

    申请日：2012-08-14

    申请人： Qingguo Xie ,  Yuanbao Chen ,  Jun Zhu ,  Xin Chen ,  Zhongyi Wu ,  Luyao Wang

    发明人： Qingguo Xie ,  Yuanbao Chen ,  Jun Zhu ,  Xin Chen ,  Zhongyi Wu ,  Luyao Wang

    IPC分类号： G06T11/00 ,  G01T1/29 ,  A61B6/03

    摘要： A method for synchronizing list-mode data of single events in a PET imaging includes: acquiring list-mode data of single events of each independent detector module, calculating a probability density of time intervals between occurrences of single events in detector module and setting initial parameters, determining detection starting time difference of each detector module with iterative peak searching and graded time window, and performing synchronization correction and coincidence discrimination on the single event data in each detector module based on the detection starting time difference. A system for synchronizing list-mode data of single events in a PET imaging includes: a data acquisition and frequency difference compensation module, an initial parameter setting module, a coarse time scale coincidence module, a fine time scale coincidence module and a data synchronization correction and coincidence discrimination module.

    Measuring tissue shear wave properties using one excitation pulse and excitation pulses having different widths and shapes
    5.
    发明授权
    Measuring tissue shear wave properties using one excitation pulse and excitation pulses having different widths and shapes 有权

    公开(公告)号：US10327739B2

    公开(公告)日：2019-06-25

    申请号：US15090357

    申请日：2016-04-04

    申请人： Yi Zheng ,  Siping Chen ,  Tianfu Wang ,  Xin Chen ,  Haoming Lin

    发明人： Yi Zheng ,  Siping Chen ,  Tianfu Wang ,  Xin Chen ,  Haoming Lin

    IPC分类号： A61B8/08 ,  G01S7/52 ,  G01S7/62

    摘要： Ultrasound radiation using a single tone burst pulse is applied to a selected location in a tissue region. The induced shear wave is detected in the region and its spectral distribution is calculated and analyzed. This detection may be repeated with other excitation pulses having different widths or different shapes at the same location. The spectral analysis of the detected shear wave is performed according to a nonlinear shear model for solving nonlinearity and viscoelasticity of the tissue at a single location. The detection location can be at one point at a time for imaging two-dimensional or three-dimensional tissue nonlinearities and shear wave properties including nonlinear magnitude variations, nonlinear phase variations, nonlinear coefficients, and viscoelasticity. The induced shear wave are detected at multiple locations along the shear propagation directions for calculating different shear group velocities and different shear phase velocities using different excitation pulses, and calculating nonlinearity and viscoelasticity.

    AUTOMATED FRUIT AND VEGETABLE CALYX OR STEM REMOVAL MACHINE
    8.
    发明申请
    AUTOMATED FRUIT AND VEGETABLE CALYX OR STEM REMOVAL MACHINE 审中-公开
    自动水果和蔬菜CALYX或STEM移除机

    公开(公告)号：US20160255873A1

    公开(公告)日：2016-09-08

    申请号：US15152400

    申请日：2016-05-11

    申请人： Yang Tao ,  John Lin ,  Xin Chen ,  Gary E. Seibel

    发明人： Yang Tao ,  John Lin ,  Xin Chen ,  Gary E. Seibel

    IPC分类号： A23N15/02 ,  B26D7/06 ,  B26F3/00 ,  B26D5/00

    CPC分类号： A23N15/02 ,  A23L19/03 ,  B26D5/00 ,  B26D5/007 ,  B26D5/34 ,  B26D7/0625 ,  B26F3/004

    摘要： A system and methods are provided for removal of undesired portions of a fruit or vegetable, such as removal of calyxes from strawberries before they are flash frozen. An automated process for high-throughput fruit or vegetable calyx removal includes a loading system, an identification system, and a removal system. The loading system is configured to transport the fruit or vegetable through the automated process. The loading system may also orient the fruits or vegetables along an axis of the fruit and or align the fruit or vegetables in a desired pattern, orientation, and/or arrangement. The identification system is configured to locate the calyx and determines calyx position data and an optimal cutting path for individual fruit. The removal system uses data received from the identification system to separate the calyx from the fruit or vegetable.

    摘要翻译： 提供了用于去除水果或蔬菜的不期望的部分的系统和方法，例如在快速冷冻之前从草莓中除去花萼。 用于高通量水果或蔬菜花萼去除的自动化过程包括加载系统，识别系统和去除系统。 装载系统配置为通过自动化过程运输水果或蔬菜。 装载系统还可以沿水果的轴线定向水果或蔬菜，或者以所需的图案，取向和/或布置方式对准水果或蔬菜。 识别系统被配置为定位花萼并且确定花萼位置数据和用于单个果实的最佳切割路径。 去除系统使用从识别系统接收的数据将花萼与水果或蔬菜分开。

    Filtering powder medicament inhaler and application
    9.
    发明授权
    Filtering powder medicament inhaler and application 有权
    过滤粉末药物吸入器及应用

    公开(公告)号：US09339614B2

    公开(公告)日：2016-05-17

    申请号：US13994760

    申请日：2011-12-15

    申请人： Qingtang Chen ,  Xin Chen

    发明人： Qingtang Chen ,  Xin Chen

    IPC分类号： A61M11/00 ,  A61M15/00 ,  A61M15/08

    CPC分类号： A61M15/0028 ,  A61M11/003 ,  A61M15/003 ,  A61M15/0035 ,  A61M15/0041 ,  A61M15/08 ,  A61M2202/064

    摘要： A filtering powdered medicament inhaler comprising a base (1) and an upper base (2). The upper base (2) has arranged therein a separator (62), which is connected at the bottom to a pressure groove (63). The upper base (2) has arranged thereon a hollow tube exterior connector (10) matching a suction tube (131). The hollow tube (19a) and a cavity (9) on one side of the separator (62) are interconnected via conduit (18), or, the hollow tube (19a) is extended for about 8 centimeters to form a mouthpiece. The upper base (2) has arranged in the cavity (9) thereof a filter (121). The base (1) is provided with an external base cover (72) which covers a press-button (5a) so as to reduce air flow into the cavity (9). The medicament inhaling conduit of the inhaler is relatively sealed and allows for rapid entrainment of a sufficient dosage of powdered medicament.

    摘要翻译： 一种过滤粉末状药物吸入器，其包括基部（1）和上部基部（2）。 上基座（2）在其中布置有分隔件（62），其在底部连接到压力槽（63）。 上部基座（2）上布置有与抽吸管（131）相匹配的中空管外部连接器（10）。 中空管（19a）和分离器（62）的一侧上的空腔（9）通过导管（18）互连，或者中空管（19a）延伸约8厘米以形成接口。 上基座（2）在其空腔（9）中布置有过滤器（121）。 基座（1）设置有覆盖按钮（5a）的外部基座盖（72），以减少进入空腔（9）的气流。 吸入器的药物吸入管道相对密封，并允许快速夹带足够剂量的粉末状药物。

    Microfluidic, electrochemical devices
    10.
    发明授权
    Microfluidic, electrochemical devices 有权
    微流控，电化学装置

    公开(公告)号：US09192933B2

    公开(公告)日：2015-11-24

    申请号：US13254967

    申请日：2010-03-08

    申请人： George M. Whitesides ,  Zhihong Nie ,  Christian Nijhuis ,  Xin Chen ,  Andres W. Martinez ,  Max Narovlyansky

    发明人： George M. Whitesides ,  Zhihong Nie ,  Christian Nijhuis ,  Xin Chen ,  Andres W. Martinez ,  Max Narovlyansky

    IPC分类号： G01N27/26 ,  B01L3/00 ,  G01N27/327

    CPC分类号： B01L3/5027 ,  B01L3/502 ,  B01L2300/0645 ,  B01L2300/0887 ,  G01N27/3272

    摘要： Microfluidic, electrochemical devices are described. The microfluidic, electrochemical device comprises one or more electrode(s) on a substrate and a patterned porous, hydrophilic layer having a fluid-impermeable barrier which substantially permeates the thickness of the porous, hydrophilic layer and defines boundaries of one or more hydrophilic channels within the patterned porous, hydrophilic layer, wherein the hydrophilic channel(s) comprises a hydrophilic region which is in fluidic communication with the electrode(s). In some embodiments, the electrodes comprise a working electrode, a counter electrode, and a reference electrode. In some embodiments, the microfluidic, electrochemical device further comprises a fluid sink. The method of assembling the microfluidic, electrochemical device is described. The method of using the device for electrochemical analysis of one or more analytes is also described.

    摘要翻译： 描述了微流体，电化学装置。 微流体电化学装置包括在基底上的一个或多个电极和图案化的多孔亲水层，其具有基本上渗透多孔亲水层的厚度的流体不可渗透屏障，并限定一个或多个亲水性通道的边界 所述图案化的多孔亲水层，其中所述亲水沟道包括与所述电极流体连通的亲水区域。 在一些实施例中，电极包括工作电极，对电极和参考电极。 在一些实施例中，微流体，电化学装置还包括流体槽。 描述了组装微流体，电化学装置的方法。 还描述了使用该装置进行一种或多种分析物的电化学分析的方法。