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85 条记录 (耗时 0.032 秒)

    Method for setting the current through shim coils and gradient coils in a nuclear magnetic resonance apparatus
    31.
    发明授权
    Method for setting the current through shim coils and gradient coils in a nuclear magnetic resonance apparatus 失效
    用于在核磁共振装置中设置通过衬垫线圈和梯度线圈的电流的方法

    公开(公告)号：US5345178A

    公开(公告)日：1994-09-06

    申请号：US47307

    申请日：1993-04-19

    申请人： Atsutaka Manabe ,  Shigefumi Kakimoto ,  Yasushiro Wada

    发明人： Atsutaka Manabe ,  Shigefumi Kakimoto ,  Yasushiro Wada

    IPC分类号： G01R33/20 ,  A61B5/055 ,  G01R33/385 ,  G01R33/387 ,  G01R33/3875 ,  G01R33/565 ,  G01V3/00

    CPC分类号： G01R33/56563 ,  G01R33/385 ,  G01R33/3875

    摘要： For calculating the magnetic field inhomogeneity, a gradient echo sequence or a spin echo sequence having a non-central 180.degree. radio-frequency pulse is first carried out. The nuclear magnetic resonance signal thus acquired is Fourier-transformed and the phase curve of the nuclear spins in a given region is identified. This is multiply repeated in different projections. The phase curves that are obtained are analyzed with a fit method and the coefficients of the spherical, harmonic functions describing the field distribution are identified therefrom. The current to be supplied to the individual shim coils and an offset current for the gradient coils can thus be calculated.

    摘要翻译： 为了计算磁场不均匀性，首先进行具有非中心180°射频脉冲的梯度回波序列或自旋回波序列。 如此获得的核磁共振信号被傅里叶变换，并且识别给定区域中的核自旋的相位曲线。 这在不同的预测中是重复的。 通过拟合方法分析获得的相位曲线，并从其中识别描述场分布的球面谐波函数的系数。 因此可以计算提供给各个垫片线圈的电流和梯度线圈的偏移电流。

    Devices for high-frequency technology, liquid-crystalline media and compounds
    34.
    发明授权
    Devices for high-frequency technology, liquid-crystalline media and compounds 有权
    高频技术设备，液晶介质和化合物

    公开(公告)号：US09193905B2

    公开(公告)日：2015-11-24

    申请号：US13513208

    申请日：2010-11-16

    申请人： Atsutaka Manabe ,  Christian Jasper ,  Volker Reiffenrath ,  Elvira Montenegro ,  Detlef Pauluth

    发明人： Atsutaka Manabe ,  Christian Jasper ,  Volker Reiffenrath ,  Elvira Montenegro ,  Detlef Pauluth

    IPC分类号： C09K19/06 ,  C09K19/12

    CPC分类号： C09K19/52 ,  C07C1/321 ,  C07C15/14 ,  C07C2531/24 ,  C09K19/12 ,  C09K2019/523 ,  C09K2219/11 ,  H01Q19/02

    摘要： The present invention relates to a device for high-frequency technology, or for the microwave region and millimeter wave region of the electromagnetic spectrum, characterized in that it contains a liquid-crystal medium which consists of one or more compounds, which one or more compounds, which contain 6 to 15 five-, six- or seven-membered rings, preferably 1,4-linked phenylene rings, or in that it contains a liquid-crystal medium which itself comprises a component A, which itself consists of one or more of the said compounds, which one or more compounds, which contain 6 to 15 five-, six- or seven-membered rings, preferably 1,4-linked phenylene rings. The present invention additionally relates to compounds of the formula (I), in which the parameters have the meanings given in the text, and to the corresponding, novel liquid-crystal media, to the use and preparation thereof, and to the production and use of the devices. The devices according to the invention are particularly suitable phase shifters in the microwave and millimeter wave region, for microwave and millimeter wave array antennas and very particularly for so-called tunable “reflectarrays”.

    摘要翻译： 本发明涉及一种用于高频技术的设备或用于电磁波谱的微波区域和毫米波区域，其特征在于，它包含由一种或多种化合物组成的液晶介质，所述一种或多种化合物 其包含6至15个五元，六元或七元环，优选1,4-连接的亚苯基环，或者其含有本身包含组分A的液晶介质，组分A本身由一个或多个 的所述化合物，其中一种或多种化合物，其含有6至15个五，六或七元环，优选1,4-连接的亚苯基环。 本发明还涉及式（I）化合物，其中参数具有本文给出的含义，以及相应的新型液晶介质的使用和制备以及生产和使用 的设备。 根据本发明的装置在微波和毫米波区域中是特别合适的移相器，用于微波和毫米波阵列天线，并且非常特别地用于所谓的可调谐“反射阵列”。

    MESOGENIC COMPOUNDS, LIQUID CRYSTAL MEDIA AND COMPONENTS FOR HIGH FREQUENCY TECHNOLOGY
    38.
    发明申请
    MESOGENIC COMPOUNDS, LIQUID CRYSTAL MEDIA AND COMPONENTS FOR HIGH FREQUENCY TECHNOLOGY 审中-公开
    液相化合物，液晶介质和高频技术的组件

    公开(公告)号：US20140008575A1

    公开(公告)日：2014-01-09

    申请号：US14006106

    申请日：2012-02-27

    申请人： Christian Jasper ,  Elvira Montenegro ,  Detlef Pauluth ,  Volker Reiffenrath ,  Atsutaka Manabe

    发明人： Christian Jasper ,  Elvira Montenegro ,  Detlef Pauluth ,  Volker Reiffenrath ,  Atsutaka Manabe

    IPC分类号： C09K19/18 ,  C09K19/30

    CPC分类号： C09K19/18 ,  C09K19/3048 ,  C09K19/322 ,  C09K2019/183 ,  C09K2019/188 ,  C09K2219/11

    摘要： The present invention relates to a liquid-crystal medium which comprises a component A which consists of one or more compounds of the formula IA in which the parameters have the respective meanings given in the claims or in the text, and to the corresponding, novel mesogenic compounds and to the preparation thereof. The present invention likewise relates to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain the media according to the invention, and to the production and use of these components. The components according to the invention are suitable, in particular, for phase shifters in the microwave and millimetre wave region, for microwave and millimetre wave array antennae and very particularly for so-called tunable “reflectarrays”.

    摘要翻译： 本发明涉及一种液晶介质，其包含由一种或多种式IA化合物组成的组分A，其中参数具有权利要求或文中给出的相应含义，以及相应的新型介晶 化合物及其制备方法。 本发明同样涉及这些液晶介质，特别是用于高频技术的组件以及含有根据本发明的介质的这些组分以及这些组分的生产和使用的用途。 根据本发明的组件特别适用于微波和毫米波区域中用于微波和毫米波阵列天线的移相器，并且特别适用于所谓的可调谐“反射阵列”。

    Liquid-crystalline medium and liquid-crystal display
    39.
    发明授权
    Liquid-crystalline medium and liquid-crystal display 有权
    液晶介质和液晶显示

    公开(公告)号：US08012370B2

    公开(公告)日：2011-09-06

    申请号：US12681461

    申请日：2008-09-09

    申请人： Michael Wittek ,  Brigitte Schuler ,  Volker Reiffenrath ,  Atsutaka Manabe ,  Elisabeth Meyer ,  Mark Goebel

    发明人： Michael Wittek ,  Brigitte Schuler ,  Volker Reiffenrath ,  Atsutaka Manabe ,  Elisabeth Meyer ,  Mark Goebel

    IPC分类号： C09K19/00 ,  C09K19/12 ,  C09K19/52 ,  C09K19/06

    CPC分类号： C09K19/20 ,  C09K19/42 ,  C09K2019/0466 ,  Y10T428/10

    摘要： The present invention relates to dielectrically positive liquid-crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of the formula (I), in which the parameters have the meaning indicated in the specification, and optionally a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of greater than 3 and optionally a dielectrically neutral component, component C, and to liquid-crystal displays, especially to active-matrix displays and in particular to TN, IPS, FFS and OCB displays, containing these media.

    摘要翻译： 本发明涉及包含介电阳性成分（A组分）的电介质正性液晶介质，组分A包含式（I）的介电阳性化合物，其中参数具有说明书中指出的含义，并且任选地具有第二介电阳性 组分B，包含一种或多种具有大于3的介电各向异性的介电各向异性的介电各向异性的化合物和任选的介电中性组分C组分，以及液晶显示器，尤其是活性基质显示器，特别是TN，IPS ，FFS和OCB显示，包含这些介质。