-
公开(公告)号：US4535291A
公开(公告)日：1985-08-13
申请号：US406418
申请日：1982-08-09
IPC分类号： A61B10/00 , A61B5/055 , G01R33/3815 , G01R33/3875 , G01R33/389 , H01F6/00 , H01F6/06 , G01R33/08
CPC分类号： G01R33/3875 , G01R33/3815 , H01F6/008 , Y10S505/843
摘要： Component coils for providing a desired magnetic field distribution, which coils are subject to interaction via mutual inductance thereof, are connected each to respective current regulated power supplies whereby the interaction is compensated. Circuits are provided to control selected pluralities of interacting coils via persistence switches with minimum number of control leads in order to reduce the thermal communication to the interior of a cryostat housing the magnet and persistence switches.
摘要翻译： 用于提供希望的磁场分布的分量线圈，每个线圈经由其互感进行相互作用，分别连接到相应的电流调节电源，由此补偿相互作用。 提供电路以通过具有最少数量的控制线的持续开关来控制所选择的多个相互作用的线圈，以便减少与容纳磁体和持续开关的低温恒温器内部的热通信。
-
2.发明授权
公开(公告)号：US4291541A
公开(公告)日：1981-09-29
申请号：US164451
申请日：1980-06-30
IPC分类号： F17C3/08 , F25D3/10 , F25D19/00 , G01R33/3815 , F17C1/00
CPC分类号： F25D3/10 , F17C3/085 , G01R33/3815 , F17C2203/016 , F17C2203/0687 , F17C2221/014 , F17C2221/017 , F17C2270/0509 , F25D19/006 , Y10S220/901 , Y10S505/893
摘要： An improved cryostat for the superconducting magnet of an NMR spectrometer comprises a nested structure of isothermal shells surrounding a thermally conductive central reservoir of substantially spherical shape containing liquid helium in which the superconducting solenoid remains operational when only partially immersed. A radiation shield surrounding the central reservoir is cooled by the boil-off of escaping helium vapor. The radiation shield is enclosed within a isothermal shell maintained at the temperature of liquid nitrogen by thermal contact with a liquid nitrogen reservoir disposed above the region of the central reservoir and shielded therefrom by a wall of the isothermal shell. An outer radiation shield surrounds the liquid nitrogen reservoir and associated isothermal shell and the outer radiation shield is maintained at a temperatures of the order of 180.degree. K. by an external refrigeration facility. A hermitically sealed containment vessel forms the outer wall of the cryostat and provides a port for evacuating to a very low common pressure all the interior spaces between adjacent nested structures. The spacing between adjacent nested surfaces is maintained by a novel internal mechanical bracing system of low thermal conductivity comprising polyester cords disposed under tension between adjacent shells.
摘要翻译： 用于NMR光谱仪的超导磁体的改进的低温恒温器包括围绕包含液氦的基本上为球形的导热中心储存器的等温壳体的嵌套结构，其中超导螺线管在仅部分浸入时保持操作。 围绕中央储层的辐射屏蔽体由逸出的氦气蒸气冷却。 通过与设置在中央储存器的区域上方的液氮储存器热接触并保持在液氮温度的等温壳体中，辐射屏蔽被封闭在等温壳体内，并通过等温壳体的壁与其隔开。 外部辐射屏蔽围绕液氮储存器和相关的等温壳，外部辐射屏蔽通过外部制冷设备保持在180°K左右的温度。 密闭的密封容器形成低温恒温器的外壁，并提供用于将相邻嵌套结构之间的所有内部空间抽真空至非常低的共同压力的端口。 相邻嵌套表面之间的间距由新型的低导热性内部机械支撑系统保持，包括在相邻外壳之间张力下布置的聚酯帘线。
-
3.发明授权Method and apparatus for preventing ionization induced noise in decoupler experiments 失效用于防止离子化实验中电离引起的噪声的方法和装置
公开(公告)号：US4240033A
公开(公告)日：1980-12-16
申请号：US23939
申请日：1979-03-26
CPC分类号： G01R33/307 , G01R33/28
摘要： Apparatus and method for reduction of noise in NMR signals during high power heteronuclear decoupling experiments. A material is introduced into the evacuated area of the variable temperature probe to decrease collisional probability of ions generated in the interwall space of the evacuated envelop.
摘要翻译： 在高功率异核解耦实验中降低NMR信号噪声的装置和方法。 将一种材料引入可变温度探头的抽空区域，以减少在撤离的包络体的间壁空间中产生的离子的碰撞概率。
-
公开(公告)号：US5063651A
公开(公告)日：1991-11-12
申请号：US370084
申请日：1989-06-21
CPC分类号： F17C3/08 , C23G1/125 , F17C2201/0109 , F17C2201/032 , F17C2203/032 , F17C2203/0366 , F17C2203/0391 , F17C2203/0631 , F17C2203/0646 , F17C2221/014 , F17C2223/0161 , F17C2223/033 , F17C2250/034 , F17C2260/033 , F17C2270/0509 , F17C2270/0527 , Y10S220/901 , Y10T29/49879 , Y10T29/49885
摘要： A liquid nitrogen Dewar includes a spun can for the liquid nitrogen, which spun can is surrounded by an exterior shell. Between the exterior shell and the can is an evacuated space containing a second shell that functions as a radiation shield. The can and both shells are formed of an aluminum alloy having a very high percentage of aluminum. The exterior can surface, interior surface of the exterior shell, and both surfaces of the second shell have clean, non-pitted, smooth, matted, smut free and etched appearances free from discoloration and stains so that these surfaces have low radiation emissivity properties and there is a minimum amount of radiant energy transmitted from the exterior shell to the can and reduced heating of the liquid nitrogen in the can. Each of the surfaces is initially polished, either mechanically, electrochemically or chemically, and then chemically treated with an etchant of nitric acid and hydrofluoric acid for a sufficient duration to achieve the desired appearance.
摘要翻译： 液氮杜瓦包括用于液氮的旋转罐，纺丝罐被外壳包围。 在外壳和罐之间是包含用作辐射屏蔽的第二壳的抽空空间。 罐和两壳由具有非常高百分比的铝的铝合金形成。 外壳的表面，外壳的内表面和第二壳的两个表面都具有清洁，无凹痕，光滑，无光泽，无污染和蚀刻的外观，没有变色和污渍，使得这些表面具有低的辐射辐射率特性， 存在从外壳向罐传递的辐射能量的最小量，并减少罐中的液氮的加热。 每个表面最初被机械地，电化学地或化学地抛光，然后用硝酸和氢氟酸的蚀刻剂进行化学处理足够的持续时间以达到期望的外观。
-
公开(公告)号：US4601175A
公开(公告)日：1986-07-22
申请号：US670122
申请日：1984-11-13
CPC分类号： F17C3/085 , F17C2270/0509 , Y10S505/888
摘要： Vapor from a boiling cryogenic liquid contained in a cryostat is warmed prior to discharge by passing said vapor through a heat exchanger for transferring heat at ambient temperature to the escaping vapor whereby condensation of atmospheric moisture on the cryostat is minimized.
摘要翻译： 通过使所述蒸气通过热交换器，将来自低温恒温器中的沸腾低温液体的蒸汽在排放之前加热，以将环境温度下的热量传递至逸出的蒸气，从而使低温恒温器上的大气湿度的冷凝最小化。
-
公开(公告)号：US4164777A
公开(公告)日：1979-08-14
申请号：US879294
申请日：1978-02-21
CPC分类号： G01R33/3815 , H01F6/00 , Y10S505/838 , Y10S505/86
摘要： A persistence switch comprises a diode and superconductive wire in thermal contact with the diode. The heat evolved by current through the forward biased diode raises the temperature of the superconductor above the transition temperature. The diode characteristic of the switch permits a plurality of such switches to be arranged in a network for selection by a relatively few signal conductors.
摘要翻译： 持续开关包括与二极管热接触的二极管和超导线。 通过正向偏置二极管的电流产生的热量将超导体的温度升高到转变温度以上。 开关的二极管特性允许将多个这样的开关布置在网络中以供相对较少的信号导体选择。
-
公开(公告)号：US4701055A
公开(公告)日：1987-10-20
申请号：US826970
申请日：1986-02-07
申请人： Marvin H. Anderson
发明人： Marvin H. Anderson
CPC分类号： B01F5/00
摘要： A mixing apparatus is composed of a vertical cylindrical shell having a mixing space divided into multiple pass annular mixing chambers by a concentrically arranged cylindrical shroud, and tubes. An outermost chamber houses a jet nozzle which provides high velocity motive jet tangentially into the annular outer riser chamber, an injector and specially constructed baffles to cause an ascending generally helical mixing to occur. Provisions are made for recirculating part of the mixed fluids from an intermediate downcomer passage to the outer riser chamber.
摘要翻译： 混合装置由具有通过同心布置的圆柱形护罩分成多通环形混合室的混合空间和管的垂直圆柱形壳体组成。 最外面的房间容纳一个喷射喷嘴，该喷嘴将高速动力射流切向地提供到环形外立管腔中，一个喷射器和特别构造的挡板，以产生上升的大致螺旋混合。 规定了将一部分混合流体从中间降液管通道再循环到外部提升室。
-
公开(公告)号：US06404197B1
公开(公告)日：2002-06-11
申请号：US09629391
申请日：2000-08-01
IPC分类号： G01V300
CPC分类号： G01R33/383
摘要： A magnet assembly for a small scale NMR spectroscopy apparatus suitable for laboratory or home use, generally comprising two permanent magnets facing one another so that the facing surfaces have opposite polarities, a pole cap on each of the two facing surfaces of the permanent magnets, and a plurality of radially polarized canceling magnets disposed about the permanent magnets and pole caps. The design and position of the radially polarized canceling magnets about the tapered pole caps reduces leakage of the magnetic field, to maintain the magnetic field strength and homogeneity within the test region, without a disadvantageous increase in the size, weight and cost of the NMR apparatus. A curved edge ring shim may be used to increase magnetic field homogeneity in the test region. Also provided is a method for measurement of glucose concentration in a fluid using NMR spectroscopy. In one aspect of the invention the fluid is a patient's body fluid and the invention provides for in vivo measurement of the glucose concentration. The method comprises spectral editing in which a RF pulse sequence is used to isolate desired resonances of glucose and thereby facilitate resolution of the glucose signal.
摘要翻译： 一种用于适用于实验室或家庭使用的小型NMR光谱仪器的磁体组件，通常包括两个彼此面对的永磁体，使得相对的表面具有相反的极性，在永磁体的两个相对表面中的每一个上的极盖，以及 设置在永磁体和极帽周围的多个径向偏振消除磁体。 围绕锥形极帽的径向偏振消除磁体的设计和位置减小磁场的泄漏，以保持测试区域内的磁场强度和均匀性，而不增加NMR装置的尺寸，重量和成本。 。 可以使用弯曲边缘环垫片来增加测试区域中的磁场均匀性。 还提供了使用NMR光谱法测量流体中葡萄糖浓度的方法。 在本发明的一个方面，流体是患者的体液，本发明提供体内葡萄糖浓度的测量。 该方法包括光谱编辑，其中使用RF脉冲序列来隔离所需的葡萄糖共振，从而便于葡萄糖信号的分辨。
-
公开(公告)号：US4883602A
公开(公告)日：1989-11-28
申请号：US235010
申请日：1988-08-22
申请人： Marvin H. Anderson
发明人： Marvin H. Anderson
CPC分类号： C02F3/1263 , B01D21/0027 , B01D21/2433 , B01D21/2444 , Y02W10/15
摘要： A solids excluding subsurface fixed liquid decanter is used primarily to decant the settled liquid above the decanter. The decanter has no moving parts and will discharge this liquid at a constant flow rate regardless of the liquid head pressure above the decanter over the time of decant. The decanter is designed to exclude solids and liquid from entering the confines of the device during the fill and mixing cycles of an SBR waste treatment process. During the aeration cycle, air is directed into a bell or hood of the decanter to replace any absorption or leakage in vent piping of the decanter. The decanter also has a mechanism for skimming the surface of the liquid volume for removing floating solids that are undesirable to the process.
摘要翻译： 不包括地下固定液体滗析器的固体主要用于将倾析器上方的沉降液倾倒。 滗析器没有移动部件，并且将以倾斜的时间无论在滗析器上方的液体头部压力如何，以恒定的流量排出该液体。 滗析器设计为在SBR废物处理过程的填充和混合循环期间排除固体和液体进入设备的界限。 在曝气循环期间，空气被引导到滗水器的钟罩或罩中，以代替滗析器排气管道中的任何吸收或泄漏。 滗析器还具有用于撇取液体体积的表面以除去对该方法不期望的漂浮固体的机构。
-
公开(公告)号：US06163154A
公开(公告)日：2000-12-19
申请号：US997072
申请日：1997-12-23
IPC分类号： G01N24/08 , A61B5/055 , G01R33/383 , G01V3/00
CPC分类号： G01R33/383
摘要： A magnet assembly for a small scale NMR spectroscopy apparatus suitable for laboratory or home use, generally comprising two permanent magnets facing one another so that the facing surfaces have opposite polarities, a pole cap on each of the two facing surfaces of the permanent magnets, and a plurality of radially polarized canceling magnets disposed about the permanent magnets and pole caps. The design and position of the radially polarized canceling magnets about the tapered pole caps reduces leakage of the magnetic field, to maintain the magnetic field strength and homogeneity within the test region, without a disadvantageous increase in the size, weight and cost of the NMR apparatus. A curved edge ring shim may be used to increase magnetic field homogeneity in the test region. Also provided is a method for measurement of glucose concentration in a fluid using NMR spectroscopy. In one aspect of the invention the fluid is a patient's body fluid and the invention provides for in vivo measurement of the glucose concentration. The method comprises spectral editing in which a RF pulse sequence is used to isolate desired resonances of glucose and thereby facilitate resolution of the glucose signal.
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.018 秒)
