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    • 32. 发明授权
    • Selective high performance electrokinetic separations employing the
surface of moving charged colloidal particles
    • 选择性高性能电动分离采用移动带电胶体颗粒的表面
    • US5084150A
    • 1992-01-28
    • US566846
    • 1990-08-14
    • Barry L. KargerAharon Cohen
    • Barry L. KargerAharon Cohen
    • B01D15/08B01D57/02G01N30/02G01N30/28G01N30/58
    • B01D57/02B01D15/08B01D15/3885G01N30/58G01N2030/285G01N30/02
    • An electrokinetic method for separating molecular species employs the surface of moving charged colloidal particles in a buffered dispersing medium, in a process which combines electrophoresis and a variant of chromatography in which the "stationary phase" surface moves. The colloidal particles have on their surface a material having the ability to interact selectively with the molecular species to be separated. The surface of the particles as originally formed may have such an ability, or the surface is modified to produce it. In one embodiment the colloidal particles are negatively charged and the surface-modifying materials are metal ions. In another embodiment the surface of the colloidal particles is modified by the incorporation of affinity groups. The analytes distribute themselves between the dispersing medium and the surface of the colloidal particles, resulting in analyte migration rates which are functions of the individual distribution equilibrium constants and the rate of colloidal particle migration. A capillary column for conducting the method includes surface-modified charged colloidal particles in a buffered dispersing medium.
    • 用于分离分子种类的电动方法在组合电泳和“固定相”表面移动的色谱变体的过程中使用缓冲分散介质中移动带电胶体颗粒的表面。 胶体颗粒在其表面上具有能够与要分离的分子物质选择性相互作用的材料。 最初形成的颗粒的表面可以具有这样的能力,或者表面被修饰以产生它。 在一个实施方案中,胶体颗粒带负电荷,表面改性材料是金属离子。 在另一个实施方案中,通过引入亲和基团来修饰胶体颗粒的表面。 分析物分散在分散介质和胶体颗粒的表面之间,导致分析物迁移速率,其是单个分布平衡常数和胶体颗粒迁移速率的函数。 用于进行该方法的毛细管柱包括缓冲分散介质中的表面改性的带电胶体颗粒。
    • 37. 发明授权
    • Method for controlling simulated moving bed system
    • 控制模拟移动床系统的方法
    • US4599115A
    • 1986-07-08
    • US634006
    • 1984-07-24
    • Masao AndoMasatake Tanimura
    • Masao AndoMasatake Tanimura
    • B01D15/00B01D15/08B01D15/18B01D53/04C13K3/00C13K13/00G01N30/28G01N30/46C13J1/06C13J1/08
    • B01D53/08B01D15/1828B01D53/04B01D53/0454C13K13/007C13K3/00B01D2215/023B01D2215/024B01D2256/24B01D2259/404B01D2259/41B01D53/0446
    • A method is disclosed for controlling a simulated moving bed system of a type including at least four series-arranged beds each packed with a solid adsorbent, with the downstream end of each bed and the upstream end of the next succeeding bed being connected by conduits to form an endless loop, and in which a fluid is caused to circulate through the beds in one direction, a feed stock and a desorbent are introduced into the system while a raffinate and a sorbate are withdrawn from the system, and the positions of introduction and withdrawal of the four kinds of fluid are periodically shifted in the direction of the circulating fluid flow. In accordance with the invention, two or more circulating pumps, provided with variable speed controllers and pressure detectors for detecting the suction pressure of each of the circulating pumps, are disposed between two beds. The flow rates of three of the four fluids introduced into or withdrawn from the system are adjusted to predetermined values, and the flow rate of the other fluid is controlled in such a manner that the suction pressure of one of the circulating pumps or the average of the suction pressures of two or more of the circulating pumps is held constant, and a rotational speed of each of the circulating pumps is controlled independently so as to control the flow rate of the circulating fluid and to maintain the suction pressure of each circulating pump at a low level.
    • 公开了一种用于控制一种类型的模拟移动床系统的方法,其包括每个填充有固体吸附剂的至少四个串联布置的床,每个床的下游端和下一个后续床的上游端通过导管连接到 形成无限循环,并且使流体在一个方向上循环通过床,将原料和解吸剂引入系统中,同时从系统中抽出萃余液和吸附物,并且引入和 四种流体的排出周期性地沿循环流体的流动方向移动。 根据本发明,设置有两个或更多个循环泵,其设置有用于检测每个循环泵的吸入压力的变速控制器和压力检测器,两个床之间。 将引入或取出的四种流体中的三种流体的流量调节到预定值,并且以这样一种方式控制其它流体的流量,使得一种循环泵的吸入压力或平均值 循环泵的两个或更多个的吸入压力保持恒定,并且独立地控制每个循环泵的转速,以便控制循环流体的流量并将每个循环泵的吸入压力保持在 低水平
    • 40. 发明申请
    • SAMPLE ANALYSIS APPARATUS
    • US20210116429A1
    • 2021-04-22
    • US16606517
    • 2017-04-25
    • SHIMADZU CORPORATION
    • Yukihiko KUDO
    • G01N30/72G01N30/28
    • A response factor that is a signal strength ratio with respect to a reference compound for various compounds is previously stored in a response factor storage (22). When an operator instructs to estimate an analysis limit value, a measurement unit (1) performs GC-MS analysis on a sample containing the reference compound a plurality of times under control of an analysis controller (3). A signal strength calculator (23) obtains a signal strength value of the reference compound based on an analysis result of the measurement unit (1), a relative strength calculator (24) calculates a relative standard deviation from the plurality of measured signal strength values, and calculates the relative standard deviation of a target compound from the response factor of the target compound read from the response factor storage (22). An analysis limit value estimator (25) estimates a limit of detection (LOD) and the like from the relative standard deviation of the target compound by a known method, and displays the LOD on a display (6). Consequently, the analysis limit value can simply be obtained without actually measuring the target compound.