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13 条记录 (耗时 0.024 秒)

    Coil winding for quadrupolar fields
    1.
    发明授权
    Coil winding for quadrupolar fields 失效
    线圈绕组四极场

    公开(公告)号：US4310799A

    公开(公告)日：1982-01-12

    申请号：US84562

    申请日：1979-10-15

    申请人： James M. S. Hutchison ,  Robert J. Sutherland ,  William A. Edelstein ,  John R. Mallard

    发明人： James M. S. Hutchison ,  Robert J. Sutherland ,  William A. Edelstein ,  John R. Mallard

    IPC分类号： A61B10/00 ,  A61B5/055 ,  G01R33/20 ,  G01R33/38 ,  G01R33/385 ,  G01R33/421 ,  G01R33/422 ,  H01F5/00 ,  H01F7/20 ,  G01N27/00

    CPC分类号： H01F7/20 ,  G01R33/385 ,  G01R33/421 ,  G01R33/422 ,  H01F5/00

    摘要： A coil is constructed such as that required in NMR imaging apparatus and in some NMR analytical applications, gradients can be established on selected axes within a uniform magnetic field. The windings of the coil also constitute an electrostatic screen which isolates the high-frequency coupling coil from the sample. The coil comprises a pair of similar quadrupole windings uniformly interpolated on the circumference of a cylindrical surface which encloses the sample volume. The winding of each pole includes conductors lying longitudinally on the cylindrical surface and distributed symmetrically over a quadrant of the circumference, the number of conductors per radian being proportional to cos 2.theta. where .theta. is the displacement from the center of the quadrant. Adjacent pole windings belonging to different quadrupoles thus overlap and the winding density is chosen so that the outer conductors of the two windings can be interlaid to form an effectively continuous electrostatic screen. The quadrupole windings are independent and can be energized to set up the required gradients on two axes perpendicular to each other in a uniform magnetic field directed perpendicular to the cylindrical axis. A high frequency coil can be wound helically over the field gradient windings without further shielding.

    摘要翻译： 如NMR核磁共振成像设备所需的线圈构造，在一些NMR分析应用中，可以在均匀磁场内的选定轴上建立梯度。 线圈的绕组也构成将高频耦合线圈与样品隔离的静电屏幕。 线圈包括一对在包围样品体积的圆柱形表面的圆周上均匀插入的类似的四极绕组。 每个极的绕组包括纵向放置在圆柱形表面上并且对称地分布在圆周的象限上的导体，每弧度的导体数量与cos2θ成比例，其中θ是从象限中心的位移。 属于不同四极的相邻极绕组因此重叠，并且选择绕组密度，使得可以将两个绕组的外导体嵌入以形成有效连续的静电屏。 四极绕组是独立的，并且可以被激励以在垂直于圆柱轴线的均匀磁场中彼此垂直的两个轴上建立所需的梯度。 高频线圈可以螺旋地缠绕在场梯度绕组上，而不需要进一步的屏蔽。

    Methods of deriving image information from objects
    2.
    发明授权
    Methods of deriving image information from objects 失效
    从对象中导出图像信息的方法

    公开(公告)号：US4290019A

    公开(公告)日：1981-09-15

    申请号：US10913

    申请日：1979-02-09

    申请人： James M. S. Hutchison ,  John R. Mallard ,  Robert J. Sutherland

    发明人： James M. S. Hutchison ,  John R. Mallard ,  Robert J. Sutherland

    IPC分类号： A61B10/00 ,  A61B5/055 ,  G01R33/48 ,  G01R33/54 ,  G01N27/00

    CPC分类号： G01R33/54

    摘要： A method of deriving image formation from an object using nuclear magnetic resonance signals comprises the steps of subjecting an object to a static magnetic field along one axis, applying a first gradient to said magnetic field which varies in a direction orthogonal to said axis together with a 90.degree. high frequency pulse, reversing the direction of said magnetic field gradient and simultaneously applying a gradient to said magnetic field which varies in a direction parallel to said one axis and then reversing the direction of said last-mentioned gradient and reading out the free induction signal from said object.

    摘要翻译： 使用核磁共振信号从对象导出图像形成的方法包括以下步骤：使物体沿着一个轴线施加静态磁场，向与所述轴线正交的方向变化的所述磁场施加第一梯度，以及 90°高频脉冲，反转所述磁场梯度的方向，同时向平行于所述一个轴的方向变化的所述磁场施加梯度，然后反转所述最后提到的梯度的方向并读出自由感应 来自所述对象的信号。

    Parallel processor with array of clustered processing elements having inputs seperate from outputs and outputs limited to a maximum of two per dimension
    3.
    发明授权
    Parallel processor with array of clustered processing elements having inputs seperate from outputs and outputs limited to a maximum of two per dimension 失效
    具有集群处理元件阵列的并行处理器，其输入与输出和输出分开，每个维度最大限制为两个

    公开(公告)号：US5379440A

    公开(公告)日：1995-01-03

    申请号：US808838

    申请日：1991-12-17

    申请人： Thomas Kelly ,  Lewis M. Mackenzie ,  Robert J. Sutherland

    发明人： Thomas Kelly ,  Lewis M. Mackenzie ,  Robert J. Sutherland

    IPC分类号： G06F15/173 ,  G06F13/00 ,  G06F15/16

    CPC分类号： G06F15/17337 ,  G06F15/17381

    摘要： A processor is provided (FIG. 1) comprising a plurality of processing elements (10) arranged into D dimensions and divided into clusters (11), wherein all elements in a cluster have a bus (13) for communicating therebetween. Each element is a member of one cluster in each dimension. Each element in a cluster is connected to the bus in that cluster by output means (FIG. 3), for sending messages to a plurality of other elements in the cluster, and separate input means corresponding to each other element in the cluster for receiving messages from each other element on the corresponding separate input means.

    摘要翻译： 提供了处理器（图1），其包括布置成D维的多个处理元件（10）并且被分成簇（11），其中簇中的所有元件具有用于在其间连通的总线（13）。 每个元素是每个维度中的一个集群的成员。 集群中的每个元件通过输出装置（图3）连接到该集群中的总线，用于将消息发送到集群中的多个其他元素，以及对应于集群中的每个其他元素的单独的输入装置，用于接收消息 从相应的单独输入装置上的每个元件。

    Dispersant viscosity index improvers
    5.
    发明授权
    Dispersant viscosity index improvers 失效
    分散剂粘度指数改进剂

    公开(公告)号：US5360564A

    公开(公告)日：1994-11-01

    申请号：US100656

    申请日：1993-07-30

    申请人： Robert J. Sutherland ,  Robert B. Rhodes

    发明人： Robert J. Sutherland ,  Robert B. Rhodes

    IPC分类号： C08F8/32 ,  C10M149/06 ,  F02F7/00 ,  C10M149/02

    CPC分类号： C10M149/06 ,  C08F8/32 ,  C10M2205/04 ,  C10M2205/06 ,  C10M2209/08 ,  C10M2215/04 ,  C10M2215/086 ,  C10M2215/26 ,  C10M2215/28 ,  C10M2217/024 ,  C10M2217/046 ,  C10M2217/06 ,  C10N2240/10 ,  C10N2240/101 ,  C10N2240/104 ,  C10N2240/106 ,  F02F7/006

    摘要： An engine oil formulation comprising of a pour point depressant, a dispersant inhibitor package containing a reduced amount of ashless dispersant, a synthetic or mineral based oil or mixtures thereof, and a modified hydrogenated star polymer of a conjugated diolefin and a modified hydrogenated copolymer of conjugated diolefins and monoalkenyl arenes is disclosed. The engine oil has and exhibits improved dispersancy and rheological properties which is attributable to the presence therein of the modified hydrogenated star polymer of a conjugated diolefin and a modified hydrogenated copolymer of conjugated diolefins and monoalkenyl arenes. A process of producing the inventive engine oil composition is also disclosed.

    摘要翻译： 一种发动机油配方，其包含倾点降低剂，含有减少量的无灰分散剂的分散剂抑制剂包，合成或矿物基油或其混合物，以及共轭二烯烃和共轭二烯烃的改性氢化共聚物的改性氢化星形聚合物 公开了二烯烃和单烯基芳烃。 发动机油具有和表现出改善的分散性和流变性能，这归因于其中存在共轭二烯烃的改性氢化星形聚合物和共轭二烯烃和单烯基芳烃的改性氢化共聚物。 还公开了生产本发明的机油组合物的方法。

    Low temperature conversion of polymerized esters
    6.
    发明授权
    Low temperature conversion of polymerized esters 失效
    聚合酯的低温转化率

    公开(公告)号：US5338802A

    公开(公告)日：1994-08-16

    申请号：US904152

    申请日：1992-12-21

    申请人： Donn A. DuBois ,  Robert J. Sutherland

    发明人： Donn A. DuBois ,  Robert J. Sutherland

    IPC分类号： C08G81/02 ,  C08F8/32 ,  C08F8/48 ,  C08F297/02 ,  C08F293/00 ,  C08F267/06

    CPC分类号： C08F297/026 ,  C08F8/32 ,  C08F8/48

    摘要： Polymers comprising anionically polymerized conjugated dienes or vinylarenes and adjacent units of (1-methyl-1-alkyl)alkyl esters such as t-butylmethacrylate or (1-aryl-1-alkyl)alkyl esters, as well as selectively hydrogenated derivatives thereof, are heated to at least 170.degree. C. in the presence of an amine to convert the polymerized ester to amide and imide groups.

    摘要翻译： 包含阴离子聚合的共轭二烯或乙烯基芳烃的聚合物和（1-甲基-1-烷基）烷基酯如甲基丙烯酸叔丁酯或（1-芳基-1-烷基）烷基酯的相邻单元以及其选择性氢化的衍生物是 在胺的存在下加热至至少170℃，以将聚合的酯转化为酰胺和酰亚胺基团。