Modulated Fourier Transform Raman fiber-optic spectroscopy
    2.
    发明授权
    Modulated Fourier Transform Raman fiber-optic spectroscopy 失效
    调制傅里叶变换拉曼光纤光谱

    公开(公告)号:US6061134A

    公开(公告)日:2000-05-09

    申请号:US316176

    申请日:1999-05-21

    IPC分类号: G01B9/02 G01J3/44

    CPC分类号: G01J3/44

    摘要: A modification to a commercial Fourier Transform (FT) Raman spectrometer is presented for the elimination of thermal backgrounds in the FT Raman spectra. The modification involves the use of a mechanical optical chopper to modulate the continuous wave laser, remote collection of the signal via fiber optics, and connection of a dual-phase digital-signal-processor (DSP) lock-in amplifier between the detector and the spectrometer's collection electronics to demodulate and filter the optical signals. The resulting Modulated Fourier Transform Raman Fiber-Optic Spectrometer is capable of completely eliminating thermal backgrounds at temperatures exceeding 300.degree. C.

    摘要翻译: 提出了商业傅里叶变换(FT)拉曼光谱仪的修改,用于消除FT拉曼光谱中的热背景。 该修改涉及使用机械光斩波器来调制连续波激光器,通过光纤远程收集信号,以及在检测器和检测器之间连接双相数字信号处理器(DSP)锁定放大器 光谱仪的收集电子设备来解调和滤波光信号。 所得到的调制傅立叶变换拉曼光纤光谱仪能够在超过300℃的温度下完全消除热背景。

    Hydrocarbon analysis and control by raman spectroscopy
    3.
    发明授权
    Hydrocarbon analysis and control by raman spectroscopy 失效
    通过拉曼光谱分析和控制碳氢化合物

    公开(公告)号:US5684580A

    公开(公告)日:1997-11-04

    申请号:US432559

    申请日:1995-05-01

    IPC分类号: G01N21/65 G01N33/28

    CPC分类号: G01N33/2835 G01N21/65

    摘要: Benzene and substituted aromatic hydrocarbons can be predicted within .+-.0.31% vol or better, using Raman NIR spectroscopy and multivariate analysis, with optional fiberoptics multistreaming, preferably with Partial Least Squares regression analysis. The resulting signal can be used to control concentration of such compounds in product to desired levels.

    摘要翻译: 使用拉曼近红外光谱和多变量分析,可以预测苯和取代的芳烃在+/- 0.31%vol或更好的范围内,可选的光纤多流,优选采用部分最小二乘回归分析。 所得到的信号可以用于控制产品中这些化合物的浓度达到所需的水平。

    Record material
    4.
    发明授权
    Record material 失效
    记录材料

    公开(公告)号:US4851384A

    公开(公告)日:1989-07-25

    申请号:US858695

    申请日:1986-05-02

    申请人: John B. Cooper

    发明人: John B. Cooper

    IPC分类号: B41M5/155

    CPC分类号: B41M5/1555 Y10S428/914

    摘要: A long chain fatty acid salt, for example calcium, sodium or aluminium stearate, is included in small amounts (e.g. 2 to 10% by weight) in an otherwise conventional color developer composition of which the major active ingredient is an adsorbent inorganic material. Record material coated with such a composition exhibits better sheet-fed runnability characteristics in wet offset printing operations than if the fatty acid salt is not present.

    摘要翻译: 在其它主要活性成分是吸附性无机材料的常规彩色显影剂组合物中,包含少量(例如2至10重量%)的长链脂肪酸盐,例如硬脂酸钙或铝。 用这种组合物涂布的记录材料在湿胶版印刷操作中表现出比不存在脂肪酸盐时更好的片材运行性能。

    Pressure sensitive record material
    7.
    发明授权
    Pressure sensitive record material 失效
    压敏记录材料

    公开(公告)号:US4962072A

    公开(公告)日:1990-10-09

    申请号:US299961

    申请日:1989-01-13

    IPC分类号: B41M5/124 B41M5/132 B41M5/165

    CPC分类号: B41M5/124 B41M5/132 B41M5/165

    摘要: Record material comprising a paper sheet having on its front a printable pigment coating and on its back isolated droplets of colour former solution each confined within a pressure rupturable barrier, wherein the pigment coating comprises a binder for the pigment together with a synthetic reactive sizing agent or a coating structure agent or both the sizing agent and the coating structure agent.

    摘要翻译: PCT No.PCT / GB87 / 00910 Sec。 371日期:1989年1月13日 102(e)日期1989年1月13日PCT 1987年12月17日PCT公布。 出版物WO88 / 04614 日期:1988年6月30日。记录材料包括在其前面具有可印刷颜料涂层的纸片,并且其背面上分离出的着色剂溶液液滴,每个液体都限制在压力可破裂的屏障内,其中颜料涂层包括用于颜料的粘合剂 与合成反应性施胶剂或涂层结构剂,或施胶剂和涂层结构剂两者。

    Apparatus and method for analyzing fluids
    8.
    发明授权
    Apparatus and method for analyzing fluids 有权
    用于分析流体的装置和方法

    公开(公告)号:US06707556B2

    公开(公告)日:2004-03-16

    申请号:US10247192

    申请日:2002-09-19

    IPC分类号: G01N2100

    摘要: A method and apparatus for determining the concentration of a constituent in a fluid by directing a beam of light into the fluid and sensing the intensity of components of the light emerging from the fluid at various wavelengths. The light emerging from the fluid can be light that has been attenuated by absorption or induced by fluorescent radiation. The effect of scattering on the light is minimized by normalizing the component intensities, which are then applied to an algorithm incorporating weighting factors that weighs the influence that the intensity at each wavelength has on the determination of the concentration of the constituent for which the algorithm was developed. The algorithm is developed by a regression analysis based upon a plurality of known mixtures containing various concentrations of the constituent of interest.

    摘要翻译: 一种用于通过将光束引导到流体中并且感测从各种波长的流体出射的光的分量的强度来确定流体中组分浓度的方法和装置。 从流体出射的光可以是通过吸收衰减或由荧光辐射诱导的光。 散射对光的影响通过归一化成分强度来最小化,然后将其应用于包含加权因子的算法,该加权因子重量每个波长的强度对确定算法的成分的浓度的影响 发达。 该算法通过基于包含各种浓度的感兴趣成分的多种已知混合物的回归分析来开发。

    Apparatus and method for analyzing fluids
    9.
    发明授权
    Apparatus and method for analyzing fluids 有权
    用于分析流体的装置和方法

    公开(公告)号:US06507401B1

    公开(公告)日:2003-01-14

    申请号:US09453003

    申请日:1999-12-02

    IPC分类号: G01N2164

    摘要: A method and apparatus for determining the concentration of a constituent in a fluid by directing a beam of light into the fluid and sensing the intensity of components of the light emerging from the fluid at various wavelengths. The light emerging from the fluid can be light that has been attenuated by absorption or induced by fluorescent radiation. The effect of scattering on the light is minimized by normalizing the component intensities, which are then applied to an algorithm incorporating weighting factors that weighs the influence that the intensity at each wavelength has on the determination of the concentration of the constituent for which the algorithm was developed. The algorithm is developed by a regression analysis based upon a plurality of known mixtures containing various concentrations of the constituent of interest.

    摘要翻译: 一种用于通过将光束引导到流体中并且感测从各种波长的流体出射的光的分量的强度来确定流体中组分浓度的方法和装置。 从流体出射的光可以是通过吸收衰减或由荧光辐射诱导的光。 散射对光的影响通过归一化成分强度来最小化,然后将其应用于包含加权因子的算法,该加权因子重量每个波长的强度对确定算法的成分的浓度的影响 发达。 该算法通过基于包含各种浓度的感兴趣成分的多种已知混合物的回归分析来开发。