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110 条记录 (耗时 0.022 秒)

    Systems and apparatus for reducing signal noise due to pump oscillations
    3.
    发明授权
    Systems and apparatus for reducing signal noise due to pump oscillations 有权

    公开(公告)号：US09976994B2

    公开(公告)日：2018-05-22

    申请号：US14839680

    申请日：2015-08-28

    申请人： DIONEX CORPORATION

    发明人： Michael J. McAdams ,  Ihab Elzind

    IPC分类号： G01N30/96 ,  G01N30/64 ,  B01D15/36 ,  C02F1/42 ,  G01N30/16

    CPC分类号： G01N30/64 ,  B01D15/361 ,  C02F1/42 ,  G01N30/16 ,  G01N30/96 ,  G01N2030/645

    摘要： A system reduces unwanted noise due to pump movement. The system includes a pump including a non-conductive piston extending into a pumping chamber for pumping the sample fluid along an analysis fluid path, a wash chamber, and a seal fluidly separating the pumping chamber from the wash chamber. The system also includes a wash path supplying a wash fluid from a wash reservoir to the wash chamber, an electrical conductor electrically connecting the analysis fluid path to the wash fluid path, and a ground conductor electrically connecting the electrical conductor to ground via a resistor. The electrical conductors and resistor combination between the chambers reduces unwanted noise in the conductivity detector due voltage potentials between the eluent and wash chambers created as the piston moves between the chambers.

    Ion chromatograph
    5.
    发明授权
    Ion chromatograph 有权
    离子色谱仪

    公开(公告)号：US09535034B2

    公开(公告)日：2017-01-03

    申请号：US14363027

    申请日：2012-10-15

    申请人： SHIMADZU CORPORATION

    发明人： Katsumasa Sakamoto ,  Yukio Oikawa ,  Shigeyoshi Horiike

    IPC分类号： G01N27/62 ,  G01N30/96 ,  G01N30/30 ,  G01N30/64

    CPC分类号： G01N27/62 ,  G01N30/96 ,  G01N2030/3038 ,  G01N2030/645 ,  G01N2030/965

    摘要： A suppressor is structured by an ion exchange section being structured by an eluate path forming member forming an eluate path and a regenerant path forming member forming a regenerant path being stacked across an ion exchange film, and a heat-conductive heat block covering the outside of the ion exchange section. A separation column, the suppressor, and an electrical conductivity meter are accommodated in a common constant temperature bath. The inside of the constant temperature bath is feedback-controlled by a temperature control section so as to be maintained at constant temperature.

    摘要翻译： 抑制器由通过形成洗脱路径的洗脱路径形成构件和形成层叠在离子交换膜上的再生路径的再生路径形成构件构成的离子交换区构成，并且覆盖外部的导热性热块 离子交换部。 分离柱，抑制器和电导率计容纳在公共恒温槽中。 恒温槽的内部由温度控制部进行反馈控制，以保持恒温。

    TOROIDAL CONDUCTIVITY PROBE WITH INTEGRATED CIRCUITRY
    6.
    发明申请
    TOROIDAL CONDUCTIVITY PROBE WITH INTEGRATED CIRCUITRY 有权
    具有集成电路的导体电导率探头（TOROIDAL CONDUCTIVITY PROBE WITH INTEGRATED CIRCUITRY）

    公开(公告)号：US20120326711A1

    公开(公告)日：2012-12-27

    申请号：US13129575

    申请日：2010-02-26

    申请人： Brian Keith Roper ,  Todd Kenneth Roper ,  Steve Lurcott ,  Robert Trepp

    发明人： Brian Keith Roper ,  Todd Kenneth Roper ,  Steve Lurcott ,  Robert Trepp

    IPC分类号： G01R33/09 ,  G01R35/00

    CPC分类号： G01N27/025 ,  G01N27/023 ,  G01N2030/645

    摘要： An apparatus and process for making noncontact measurements of liquid conductivity are disclosed. This apparatus forms a conductivity cell and uses two toroids, one to generate a magnetic field and another to sense the magnetic field, placed in an enclosure which allows liquid to pass through it for measurement. Ground planes constructed preferably of printed circuit boards with conductive layers are used to reduce capacitive coupling between the toroids and provide better shielding. Circuitry on or near these circuit boards are used to convert local, low level signals from a sensing toroid to signals which can be more readily passed to and from a recording system or operator without degradation. Sensors on or near these circuit boards can be used to sense environmental conditions in order to improve operation and stability of the conductivity cell. Methods and apparatus for increasing circuit sensitivity and calibrating the sensor are also disclosed.

    摘要翻译： 公开了用于制造液体电导率的非接触测量的装置和方法。 该装置形成电导池，并使用两个环形圈，一个用于产生磁场，另一个用于感测磁场，放置在允许液体通过其进行测量的外壳中。 优选使用具有导电层的印刷电路板构造的接地层用于减小环形线圈之间的电容耦合并提供更好的屏蔽。 这些电路板上或其附近的电路用于将来自感测环形线圈的局部，低电平信号转换成可以更容易地传送到记录系统或操作者而不降级的信号。 可以使用这些电路板上或附近的传感器来感测环境条件，以便改善电导池的操作和稳定性。 还公开了用于提高电路灵敏度和校准传感器的方法和装置。

    IC-processed polymer nano-liquid chromatoraphy system on-a-chip and method of making it
    7.
    发明授权
    IC-processed polymer nano-liquid chromatoraphy system on-a-chip and method of making it 有权
    IC加工聚合物纳米液体色谱体系及其制备方法

    公开(公告)号：US08323488B2

    公开(公告)日：2012-12-04

    申请号：US13037192

    申请日：2011-02-28

    申请人： Yu-Chong Tai ,  Qing He ,  Jun Xie ,  Changlin Pang ,  Terry D. Lee ,  Damien Rodger ,  Matthieu Liger

    发明人： Yu-Chong Tai ,  Qing He ,  Jun Xie ,  Changlin Pang ,  Terry D. Lee ,  Damien Rodger ,  Matthieu Liger

    IPC分类号： B01D15/08 ,  B01D15/10 ,  B01D15/00

    CPC分类号： H05K3/284 ,  G01N30/6047 ,  G01N30/6095 ,  G01N2030/645 ,  G03F1/80 ,  G01N2030/625

    摘要： Embodiments in accordance with the present invention relate to packed-column nano-liquid chromatography (nano-LC) systems integrated on-chip, and methods for producing and using same. The microfabricated chip includes a column, flits/filters, an injector, and a detector, fabricated in a process compatible with those conventionally utilized to form integrated circuits. The column can be packed with supports for various different stationary phases to allow performance of different forms of nano-LC, including but not limited to reversed-phase, normal-phase, adsorption, size-exclusion, affinity, and ion chromatography. A cross-channel injector injects a nanolitre/picolitre-volume sample plug at the column inlet. An electrochemical/conductivity sensor integrated at the column outlet measures separation signals. A self-aligned channel-strengthening technique increases pressure rating of the microfluidic system, allowing it to withstand the high pressure normally used in high performance liquid chromatography (HPLC). On-chip sample injection, separation, and detection of mixture of anions in water is successfully demonstrated using ion-exchange nano-LC.

    摘要翻译： 根据本发明的实施方案涉及集成在片上的填充柱纳米液相色谱（nano-LC）系统及其制造和使用方法。 微制造的芯片包括以常规用于形成集成电路的方法兼容的工艺制造的柱，过滤器，注射器和检测器。 该柱可以填充有用于各种不同固定相的载体，以允许不同形式的纳米LC的性能，包括但不限于反相，正相，吸附，尺寸排阻，亲和力和离子色谱。 交叉通道注射器在柱入口处注入纳升/皮升体积的样品塞。 集成在色谱柱出口处的电化学/电导率传感器测量分离信号。 自对准的通道加强技术提高了微流体系统的压力等级，使其能够承受通常用于高效液相色谱（HPLC）的高压。 使用离子交换纳米LC成功地证明了在水中阴离子的混合物的片上样品注入，分离和检测。

    Film-Type Solid Polymer Ionomer Sensor And Sensor Cell
    8.
    发明申请
    Film-Type Solid Polymer Ionomer Sensor And Sensor Cell 失效
    膜型固体聚合物离聚物离子传感器和传感器单元

    公开(公告)号：US20080264789A1

    公开(公告)日：2008-10-30

    申请号：US12147019

    申请日：2008-06-26

    申请人： Otto J. Prohaska ,  Anthony B. LaConti ,  Jose D. Giner ,  Mourad Manoukian

    发明人： Otto J. Prohaska ,  Anthony B. LaConti ,  Jose D. Giner ,  Mourad Manoukian

    IPC分类号： G01N27/26

    CPC分类号： G01N27/4045 ,  G01N2030/125 ,  G01N2030/645

    摘要： A miniaturized gas sensor including film type electrodes, and a solid ionomer electrolyte, for the detection of toxic gases, i.e., carbon monoxide, and other oxidizable or reducible gases and vapors is described. The all-solid planar sensor cell has two or more film type electrodes arranged on a non-conductive planar surface of a supportive material. The electrodes are discrete and in intimate contact with the same solid polymer ionomer membrane. The sensor cell contains no liquid electrolyte and is operated in a potentiostatic or potentiodynamic mode. The unique feature of the sensor cell is that high sensitivity to a select gas or vapor is achieved by a novel three-phase contact area design for a sensing electrode which is easily accessible to the gas sample via small diffusion openings or holes that penetrate through the solid polymer ionomer membrane layer above the sensing electrode. A significant signal to background noise enhancement is achieved for these film type sensor cells by processes that increase the three-phase contact area

    摘要翻译： 描述了一种用于检测有毒气体即一氧化碳和其它可氧化或可还原的气体和蒸气的薄膜型电极和固体离聚物电解质的微型气体传感器。 全固体平面传感器单元具有布置在支撑材料的非导电平面上的两个或多个薄膜型电极。 电极是离散的并且与相同的固体聚合物离聚物膜紧密接触。 传感器电池不含液体电解质，并以恒电位或电位动力学模式运行。 传感器单元的独特之处在于，通过用于感应电极的新颖的三相接触面积设计来实现对选择气体或蒸气的高灵敏度，该设计可以通过穿透该气体样本的小扩散开口​​或孔容易接近气体样品 固体聚合物离聚物膜层感应电极上方。 通过增加三相接触面积的工艺，对这些膜型传感器单元实现对背景噪声增强的显着信号

    Film-type solid polymer ionomer sensor and sensor cell
    9.
    发明授权
    Film-type solid polymer ionomer sensor and sensor cell 失效
    薄膜型固体聚合物离子交联聚合物传感器和传感器单元

    公开(公告)号：US07404882B2

    公开(公告)日：2008-07-29

    申请号：US10738858

    申请日：2003-12-17

    申请人： Otto J. Prohaska ,  Anthony B. LaConti ,  Jose D. Giner ,  Mourad Manoukian

    发明人： Otto J. Prohaska ,  Anthony B. LaConti ,  Jose D. Giner ,  Mourad Manoukian

    IPC分类号： G01N27/407

    CPC分类号： G01N27/4045 ,  G01N2030/125 ,  G01N2030/645

    摘要： A miniaturized gas sensor including film type electrodes, and a solid ionomer electrolyte, for the detection of toxic gases, i.e., carbon monoxide, and other oxidizable or reducible gases and vapors is described. The all-solid planar sensor cell has two or more film type electrodes arranged on a non-conductive planar surface of a supportive material. The electrodes are discrete and in intimate contact with the same solid polymer ionomer membrane. The sensor cell contains no liquid electrolyte and is operated in a potentiostatic or potentiodynamic mode. The unique feature of the sensor cell is that high sensitivity to a select gas or vapor is achieved by a novel three-phase contact area design for a sensing electrode which is easily accessible to the gas sample via small diffusion openings or holes that penetrate through the solid polymer ionomer membrane layer above the sensing electrode. A significant signal to background noise enhancement is achieved for these film type sensor cells by processes that increase the three-phase contact area.

    摘要翻译： 描述了一种用于检测有毒气体即一氧化碳和其它可氧化或可还原的气体和蒸气的薄膜型电极和固体离聚物电解质的微型气体传感器。 全固体平面传感器单元具有布置在支撑材料的非导电平面上的两个或多个薄膜型电极。 电极是离散的并且与相同的固体聚合物离聚物膜紧密接触。 传感器电池不含液体电解质，并以恒电位或电位动力学模式运行。 传感器单元的独特之处在于，通过用于感应电极的新颖的三相接触面积设计来实现对选择气体或蒸气的高灵敏度，该设计可以通过穿透该气体样品的小扩散开口​​或孔容易接近气体样品 固体聚合物离聚物膜层感应电极上方。 通过增加三相接触面积的工艺，对这些膜型传感器单元实现对背景噪声增强的显着信号。