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公开(公告)号：US5343148A
公开(公告)日：1994-08-30
申请号：US992901
申请日：1992-12-16
IPC分类号： G01R33/385 , G01R33/20
CPC分类号： G01R33/385
摘要： In an NMR apparatus with a system of gradient coils for the production of a magnetic field gradient within a measurement volume (1) within a field coil, the transverse gradient coils are constructed unsymmetrically with respect to the z=0 plane dividing the measurement volume (1), however largely mirror symmetric to a x=0 or y=0 plane containing the z axis, and possess only two partial coils (20', 20''; 40', 40'') whose windings each exhibit the same winding direction. The axial gradient coils are cylindrically symmetric with respect to the z axis and totally unsymmetric with respect to the z=0 plane, and consist of at least two partial coils which are arranged on differing sides of z=0 plane, whereby the partial coils on one side largely exhibit the opposite winding direction than the coils on the other side, and whereby the number of coils with a particular winding direction is not equal to the number of coils with the opposite winding direction. In each case, it is thereby achieved that the measurement volume (1) is displaced to a, relative to the z axis, axial end of the apparatus so that access to the measurement volume (1) is substantially improved.
摘要翻译： 在具有用于在场线圈内的测量体积（1）内产生磁场梯度的梯度线圈系统的NMR装置中，相对于划分测量体积的z = 0平面不对称地构造横向梯度线圈（ 1），但主要与r轴= 0或y = 0平面反射对称，包含z轴，并且仅具有两个部分线圈（20'，20“，40”，40“），其绕组各自呈现相同的卷绕方向 。 轴向梯度线圈相对于z轴呈圆柱形对称，并且相对于z = 0平面完全不对称，并且由至少两个部分线圈组成，其布置在z = 0平面的不同侧面上， 一侧大体上呈现与另一侧的线圈相反的卷绕方向，由此具有特定卷绕方向的线圈的数量不等于具有相反卷绕方向的线圈的数量。 在每种情况下，由此实现测量体积（1）相对于z轴移动到设备的轴向端部，使得对测量体积（1）的接近得到显着改善。
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公开(公告)号：US5323135A
公开(公告)日：1994-06-21
申请号：US35739
申请日：1993-03-22
申请人： Hartmut Schmidt , Michael Westphal
发明人： Hartmut Schmidt , Michael Westphal
IPC分类号： G01R33/385 , G01R33/3875 , G01R33/38 , H01F7/20 , H01F41/04
CPC分类号： G01R33/3875 , G01R33/385
摘要： In a method for the production of a magnet coil arrangement which can create a predetermined magnet field B and has a minimal inductance L. The magnetic field B to be generated is expanded in spherical harmonics with coefficients C.sub.n,m and a field error .DELTA. B=f.sub.1 (C.sub.n,m) is defined fixing the deviation of the magnet field profile of the coil arrangement to be calculated from the given magnet field B within a volume and, if necessary, further parameters P=f.sub.2 (C.sub.n,m) are predefined, whereby the value of P which is calculated with a particular set of coefficients C.sub.n,m is within predetermined limits. By defining limits for technically relevant parameters and their variation as well as by giving the desired minimum inductance, the procedure achieves a high flexibility in conjunction with independent optimization of the parameters, in particular field errors, minimum inductance and current density oscillations.
摘要翻译： 在用于制造可产生预定磁场B并具有最小电感L的磁体线圈装置的方法中。要产生的磁场B以系数Cn，m的球谐函数扩展，并且场误差DELTA B = 将f1（Cn，m）定义为固定要从体积内的给定磁场B计算的线圈装置的磁场分布的偏差，并且如果需要，预定义另外的参数P = f2（Cn，m） 由此用特定系数Cn，m计算的P的值在预定限度内。 通过定义技术上相关参数及其变化的限制以及给出所需的最小电感，该程序结合独立优化参数，特别是场误差，最小电感和电流密度振荡，实现了高度的灵活性。
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公开(公告)号：US06181227B2
公开(公告)日：2001-01-30
申请号：US09492121
申请日：2000-01-27
申请人： Hartmut Schmidt , Michael Westphal
发明人： Hartmut Schmidt , Michael Westphal
IPC分类号： H01F500
CPC分类号： G01R33/385
摘要： The windings of an NMR magnet coil are formed of at least two adjacent non-crossing conductor paths which are electrically insulated from one another. Each conductor path of a partial coil can be transformed geometrically into one respective conductor path in each partial coil through the symmetrical operations. The various conductor paths in each partial coil are coded in such a manner that the conductor paths adjacent to one another in a winding and attributed with identical successive cardinal numbers as code numbers in their geometric order. The conductor paths in the various partial coils which can be transformed into one another through symmetrical operations have the same code numbers. Each conductor path in a partial coil is electrically connected in series with one conductor path each in at least one other partial coil. These series connections of conductor paths are electrically connected to one another in parallel. The sum of the code numbers of the conductor paths connected in series in the various partial coils is identical in each case with all series connections of conductor paths which are connected in parallel. In this manner it is possible, with an extremely small number of crossings, to avoid the problem of strong current redistributions by eddy currents in the generation of magnetic fields which are rapidly variable with time.
摘要翻译： NMR磁体线圈的绕组由彼此电绝缘的至少两个相邻的非交叉导体路径形成。 部分线圈的每个导体路径可以通过对称的操作在几何上变换成每个部分线圈中的一个相应的导体路径。 每个部分线圈中的各种导体路径以这样的方式进行编码，使得导体路径在绕组中彼此相邻并且以相同的连续基数以其几何顺序代码编号归属。 可以通过对称操作彼此变换的各种局部线圈中的导体路径具有相同的编号。 部分线圈中的每个导体路径与至少一个其它部分线圈中的每个导体路径串联电连接。 导体路径的这些串联连接彼此电连接。 在各种局部线圈中串联连接的导体路径的编号的总和在每种情况下都与并联连接的导体路径的所有串联连接相同。 以这种方式，通过极少数量的交叉，可以避免在产生随时间变化的磁场中的涡流强电流重新分配的问题。
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公开(公告)号：US06667619B2
公开(公告)日：2003-12-23
申请号：US10108499
申请日：2002-03-29
申请人： Michael Westphal , Hartmut Schmidt
发明人： Michael Westphal , Hartmut Schmidt
IPC分类号： G01V300
CPC分类号： G01R33/3854 , G01R33/3856
摘要： In a magnetic resonance (MR) apparatus comprising a main field magnet system with a tubular opening for receiving the object to be investigated and at least one tubular mechanically oscillatory component, disposed in this opening, in particular a gradient coil system, and at least one cylindrical element of electrically conducting material surrounded by the main field magnet system, which is rigidly mechanically connected to at least one of the mechanically oscillatory components or forms an integral mechanical component thereof, the sum of the products p of the electric conductivities &sgr;, the cylinder radii R and the wall thicknesses d of the cylindrical element per mechanically oscillatory component is between 1 Am/V and 10,000 Am/V, preferably between 10 Am/V and 1000 Am/V, and particularly preferred between 20 Am/V and 500 Am/V. This produces good noise damping in an inward direction.
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5.发明授权Electric arrangement for operation of a gradient coil with several power supplies 失效用于具有多个电源的梯度线圈的电气布置公开(公告)号：US06479997B1
公开(公告)日：2002-11-12
申请号：US09556659
申请日：2000-04-24
申请人： Michael Westphal , Hartmut Schmidt
发明人： Michael Westphal , Hartmut Schmidt
IPC分类号： G01V300
CPC分类号： G01R33/3852
摘要： A gradient coil system comprises a gradient coil for generating a rapidly changing magnetic gradient field in a working volume of a magnetic resonance apparatus, with a current path guided in windings on the surface of a geometric body, the geometry of which results in the desired spatial dependence of the magnetic field of this gradient coil in the working volume. N current power supplies (NG1, NG2) can be controlled with an analog or digital control signal to each generate a time-dependent controlled electric current (i1, i2) proportional to the control signal. The current path is divided into several parallel conductor paths which are electrically insulated from one another, and which form a doubly or multiply wound transformer, wherein the inductances of the various conductor paths with respect to one another as well as the mutual inductances with respect to one another have approximately the same value L. The ends of each conductor path are each connected to one respective current power supply (NG1,NG2), and the current power supplies (NG1, NG2) can be controlled with control signals in such a manner as to supply the same current (i1, i2) to the conductor paths at all times. This enables operation of a gradient coil with several current power supplies in such a manner that, should the dependencies of the currents of the current power supplies not be precisely identical, generation of disturbing magnetic fields having a geometry which differs considerably from the desired geometry for the gradient coil is prevented.
摘要翻译： 梯度线圈系统包括用于在磁共振设备的工作体积中产生快速变化的磁梯度场的梯度线圈，其中电流路径被引导在几何体的表面上的绕组中，其几何形状导致期望的空间 该梯度线圈的磁场在工作体积中的依赖性。 可以使用模拟或数字控制信号来控制N个当前电源（NG1，NG2），以产生与控制信号成比例的时间依赖的受控电流（i1，i2）。 电流路径被分成几个平行的导体路径，它们彼此电绝缘，并且形成双重或多重绕线的变压器，其中各种导体路径相对于彼此的电感以及相对于 另一个具有大致相同的值L.每个导体路径的端部各自连接到一个相应的电流电源（NG1，NG2），并且可以以这样的方式控制当前电源（NG1，NG2） 以便始终向导体路径提供相同的电流（i1，i2）。 这使得可以以这样的方式操作具有多个电流电源的梯度线圈，使得如果当前电源的电流的相关性不是精确相同的话，产生干扰磁场，其具有与期望的几何形状显着不同的几何形状， 防止了梯度线圈。
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公开(公告)号：US20060177542A1
公开(公告)日：2006-08-10
申请号：US11377890
申请日：2006-03-17
IPC分类号： A23K1/18
摘要： Novel flake feeds are described, especially for aquatic animals, such as fish, shrimps and invertebrates, characterized in that the flakes have a uniform form, a variable thickness and a water content of from 1 to 30%, as well as a process for the production thereof.
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公开(公告)号：US20060024406A1
公开(公告)日：2006-02-02
申请号：US11200011
申请日：2005-08-10
IPC分类号： A23K1/18
摘要： Novel flake feeds are described, especially for aquatic animals, such as fish, shrimps and invertebrates, characterized in that the flakes have a uniform form, a variable thickness and a water content of from 1 to 30%, as well as a process for the production thereof.
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公开(公告)号：US20050129003A1
公开(公告)日：2005-06-16
申请号：US10986954
申请日：2004-11-15
申请人： Rainer Baeder , Hartmut Schmidt
发明人： Rainer Baeder , Hartmut Schmidt
CPC分类号： H04L65/1006 , H04L29/06027 , H04L65/4007 , H04M3/42297 , H04M7/1255 , H04M7/128 , H04Q3/005 , H04Q2213/13034 , H04Q2213/13097 , H04Q2213/13098 , H04Q2213/13389
摘要： The invention concerns a call control method for IP based telephone services and a call control server providing IP based telephone services within a communication network. The call control server assigns two or more IP telephone terminals to a telephone number commonly shared by these IP telephone terminals. It stores IP address data of these IP telephone terminals in the registry of this call control server which is responsible of VoIP calls directed to this telephone number. An IP telephone terminal transmits a presence message to the call control server when a presence button of the IP telephone terminal is pressed. VoIP calls directed to the telephone number are routed to that one of the IP telephone terminals assigned to the telephone number, the call control server has received the presence message from.
摘要翻译： 本发明涉及用于基于IP的电话业务的呼叫控制方法和在通信网络内提供基于IP的电话业务的呼叫控制服务器。 呼叫控制服务器将两个或多个IP电话终端分配给这些IP电话终端共同共享的电话号码。 它将这些IP电话终端的IP地址数据存储在负责针对该电话号码的VoIP呼叫的该呼叫控制服务器的注册表中。 当IP电话终端的存在按钮被按下时，IP电话终端向呼叫控制服务器发送存在消息。 定向到电话号码的VoIP呼叫被路由到分配给电话号码的IP电话终端中的一个，呼叫控制服务器已经从其接收到存在消息。
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9.发明授权Medicinal feed for the systemic treatment of ectoparasitic and ectobacterial diseases of fish 失效用于系统治疗鱼的外寄生和细菌性疾病的药用饲料
公开(公告)号：US5712290A
公开(公告)日：1998-01-27
申请号：US519832
申请日：1995-08-23
申请人： Hartmut Schmidt , Gunter Ritter
发明人： Hartmut Schmidt , Gunter Ritter
CPC分类号： A23K50/80 , A23K20/179
摘要： The present invention provides a medicinal feed for fish, which comprises at least one compound selected from the group consisting of thionine, nitrothiazole, nitrofuran, quinoline and acridine derivatives, compounds splitting off aldehydes, transition metal derivatives, metal colloids, hexamethylenetetramine and/or quaternary ammonium salts as active materials.
摘要翻译： 本发明提供一种鱼用药物饲料，其含有选自硫堇，硝基噻唑，硝基呋喃，喹啉和吖啶衍生物中的至少一种化合物，分解醛的化合物，过渡金属衍生物，金属胶体，六亚甲基四胺和/或四 铵盐作为活性物质。
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10.发明授权Process and apparatus for separating aspherical particles from spherical particles 失效从球形颗粒分离非球面颗粒的方法和装置
公开(公告)号：US3978986A
公开(公告)日：1976-09-07
申请号：US519661
申请日：1974-10-31
申请人： Hartmut Schmidt , Jurgen Neumann , Reinhold Arneth
发明人： Hartmut Schmidt , Jurgen Neumann , Reinhold Arneth
CPC分类号： B07B13/003 , B07B13/11 , B07B13/116
摘要： Disclosed is a process and apparatus for separating aspherical particles from spherical particles in an admixture thereof, preferably in the preparation of a particulate carrier material for two-component developer systems for electrostatic copy devices. The process comprises directing the mixture of particles onto a surface which is inclined with respect to the horizontal; producing a relative velocity between the inclined surface and the mixture of particles, the velocity having a directional component transverse to the steepest inclination gradient of the inclined surface; and collecting a portion of the mixture of particles in a zone of the inclined surface wherein predominantly spherical particles have accummulated as a result of their greater tendency to roll in response to the relative velocity than the aspherical particles.
摘要翻译： 公开了一种用于将非球面颗粒与其混合物中的球形颗粒分离的方法和装置，优选用于制备用于静电复印装置的双组分显影剂体系的颗粒载体材料。 该方法包括将颗粒混合物引导到相对于水平面倾斜的表面上; 产生倾斜表面和颗粒混合物之间的相对速度，该速度具有横向于倾斜表面最陡倾斜度的方向分量; 并且在倾斜表面的区域中收集颗粒混合物的一部分，其中主要是球形颗粒作为响应于相对于非球面颗粒的相对速度滚动的倾向而累积。
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