Light scattering measuring apparatus utilizing a photodetector mounted
on a rotary stand
    1.
    发明授权
    Light scattering measuring apparatus utilizing a photodetector mounted on a rotary stand 失效
    光散射测量装置利用旋转台上安装的光电二极管

    公开(公告)号:US5113083A

    公开(公告)日:1992-05-12

    申请号:US465186

    申请日:1990-03-26

    CPC分类号: G01S17/58 G01S7/499

    摘要: A rotary stand (11) having a half-mirror (8) and a photodetector (10) mounted thereon, is continuously rotated around a first rotary shaft (A) passing through a sample (S), and set to a predetermined scattering angle. Simultaneously, a rotary reflecting mirror (7) is rotated at a predetermined angle to direct a reference li8ght (LR) to the half-mirror (8) at all times. The half-mirror (8) is also rotated at its own axis at a predetermined angle so that the direction of a scattering light (LS) at the light emitting side of the half-mirror (8) is identical with the direction of the reference lilght (LR). Accordingly, the reference light may be composed with the scattered light at an arbitrary scattering angle, enabling observation of the Doppler shift in the scattered light direction (FIG. 1).

    摘要翻译: PCT No.PCT / JP89 / 00717 Sec。 371 1990年3月26日第 102(e)1990年3月26日PCT PCT日期为1989年7月17日。安装有半反射镜(8)和光电检测器(10)的旋转台(11)围绕第一旋转轴 A)通过样品(S),并设定为预定的散射角。 同时,旋转反射镜(7)以预定角度旋转,以将参考亮度(LR)始终指向半反射镜(8)。 半反射镜(8)也以其自己的轴线以预定角度旋转,使得半反射镜(8)的发光侧的散射光(LS)的方向与参考的方向相同 lilght(LR)。 因此,参考光可以以任意散射角的散射光构成,能够观察散射光方向的多普勒频移(图1)。

    Photon correlator
    2.
    发明授权
    Photon correlator 有权
    光子相关器

    公开(公告)号:US06885448B2

    公开(公告)日:2005-04-26

    申请号:US10276994

    申请日:2002-03-26

    摘要: A photon correlator comprises a plurality of sampling gates 11a-11e which are open during different periods of time; a plurality of memories 12a-12e each provided corresponding to each of the plurality of sampling gates 11a-11e for storing data corresponding to the number of photons; and a data processing control section for reading out the data stored in the memories 12a-12e, and performing a correlation calculation by means of software. The mechanism of the hardware comprising the sampling gates 11a-11e and memories 12a-12e enables high-speed writing of data in the memories and real-time read out of the data. In addition, the software performs correlation calculations in parallel with the above processing. Accordingly, the particle sizes and diffusion coefficient of particles in a fluid can be obtained at high speed under various conditions.

    摘要翻译: 光子相关器包括在不同时间段内打开的多个采样门11a至11e; 每个对应于多个采样门11 a-11e中的每一个提供的多个存储器12a-12e,用于存储对应于光子数量的数据; 以及数据处理控制部分,用于读出存储在存储器12a-12e中的数据,并通过软件进行相关计算。 包括采样门11 a-11 e和存储器12 a-12 e的硬件的机制使得能够高速地将数据写入存储器并实时读出数据。 此外,软件与上述处理并行执行相关计算。 因此,可以在各种条件下高速地获得流体中的颗粒的粒径和扩散系数。

    Apparatus and breathing bag for spectrometrically measuring isotopic gas
    3.
    发明授权
    Apparatus and breathing bag for spectrometrically measuring isotopic gas 失效
    用于光谱测量同位素气体的仪器和呼吸袋

    公开(公告)号:US5964712A

    公开(公告)日:1999-10-12

    申请号:US849351

    申请日:1997-06-06

    摘要: A correction curve (FIG. 19) is prepared by plotting .sup.12 CO.sub.2 concentrations and .sup.13 CO.sub.2 /.sup.12 CO.sub.2 concentration ratios which are determined on the basis of a calibration curve and .sup.13 CO.sub.2 and .sup.12 CO.sub.2 absorbances of gaseous samples having the same .sup.13 CO.sub.2 /.sup.12 CO.sub.2 concentration ratio but known different .sup.12 CO.sub.2 concentrations. A gaseous test sample containing .sup.13 CO.sub.2 and .sup.12 CO.sub.2 as component gases is introduced into a cell, and spectrometrically measured. A .sup.12 CO.sub.2 concentration of the gaseous test sample is determined by way of the spectrometric measurement. A concentration ratio correction value is obtained on the basis of the correction curve and the .sup.12 CO.sub.2 concentration of the gaseous test sample thus determined. A measured .sup.13 CO.sub.2 /.sup.12 CO.sub.2 concentration ratio is divided by the concentration ratio correction value thus obtained for correction of the .sup.13 CO.sub.2 /.sup.12 CO.sub.2 concentration ratio. Thus, the measurement accuracy of the concentration ratios of the component gases can be improved. A breath sampling bag and gas measuring system is also disclosed where each is configured such that breath inlets of the gas measuring apparatus are prevented from being respectively connected to the wrong breath introduction pipes of the breath sampling bag.

    摘要翻译: PCT No.PCT / JP96 / 02876 Sec。 371日期:1997年6月6日 102(e)日期1996年6月6日PCT提交1996年10月2日PCT公布。 公开号WO97 / 14029 日期1997年04月17日通过绘制12CO2浓度和13CO2 / 12CO2浓度比,制备校正曲线(图19),其基于校准曲线确定,并且具有13CO 2 / 12CO 2浓度的气态样品的13CO 2和12 CO 2吸光度 比例但已知不同的12CO2浓度。 将含有作为组分气体的13CO 2和12 CO 2的气态测试样品引入到电池中,并进行光谱测量。 通过光谱测量法测定气态测试样品的12CO2浓度。 基于如此确定的气体试样的校正曲线和12CO 2浓度获得浓度比校正值。 测量的13CO 2 / 12CO 2浓度比除以由此获得的用于校正13CO 2 / 12CO 2浓度比的浓度比校正值。 因此,能够提高成分气体的浓度比的测定精度。 还公开了一种呼吸取样袋和气体测量系统,其中每个呼气采样袋和气体测量系统被配置为使得气体测量装置的呼吸入口被防止分别连接到呼吸取样袋的错误的呼吸导管。

    Gas injection amount determining method in isotope gas analysis, and isotope gas analyzing and measuring method and apparatus
    4.
    发明授权
    Gas injection amount determining method in isotope gas analysis, and isotope gas analyzing and measuring method and apparatus 有权
    同位素气体分析中的气体注入量确定方法和同位素气体分析及测量方法及装置

    公开(公告)号:US07749436B2

    公开(公告)日:2010-07-06

    申请号:US10577451

    申请日:2004-10-29

    IPC分类号: G01N33/00

    CPC分类号: G01N21/3504 A61B5/0836

    摘要: As previous processing of measurement in which gas to be measured containing, as gas components, carbon dioxide 13CO2 and carbon dioxide 12CO2, is introduced into a cell, and in which the intensities of transmitted lights having wavelengths suitable for measurement of the respective gas components, are measured and then data-processed to measure the concentrations of the gas components, the air having a predetermined volume Va is sucked by a gas injection device 21, a gas exhaust valve V6 of a cell 11 is closed and the air stored in the gas injection device 21 is transferred to the cell 11 filled with the air at an atmospheric pressure, thereby to pressurize the cell inside. The pressure thus pressurized is measured as P. The cell volume Vc is subtracted from the product obtained by multiplying the sum. V0 of the volume Va and Vc the cell volume Vc, by the ratio P0/P in which P0 is the target pressure of the gas to be measured at which a calibration curve has been prepared for an isotope gas analysis and measurement, thus determining the one-time gas injection amount of the gas injection device 21. Thus, measured concentration variations based on changes in atmospheric pressure can be corrected.

    摘要翻译: 作为先前的测量处理,其中将待测量的气体作为气体组分含有二氧化碳13CO 2和二氧化碳12CO 2,并将其中的辐射强度引入到电池中,并且其中具有适于测量各个气体组分的波长的透射光的强度, 被测量,然后进行数据处理以测量气体组分的浓度,具有预定体积Va的空气由气体注入装置21吸入,单元11的排气阀V6关闭,并且存储在气体中的空气 注入装置21在大气压下转移到填充有空气的电池单元11,从而对电池内部进行加压。 将如此加压的压力测量为P.从通过乘以和获得的乘积中减去单元容积Vc。 V0为体积Va,Vc为电池体积Vc,P0 / P为P0为待测气体的目标压力,其中准备了用于同位素气体分析和测量的校准曲线,从而确定 气体注入装置21的一次气体注入量。因此,可以校正基于大气压变化的测量浓度变化。

    Method for spectrometrically measuring isotopic gas and apparatus thereof
    5.
    发明授权
    Method for spectrometrically measuring isotopic gas and apparatus thereof 有权
    光谱测量同位素气体的方法及其装置

    公开(公告)号:US06274870B1

    公开(公告)日:2001-08-14

    申请号:US09303427

    申请日:1999-05-03

    IPC分类号: G01N2135

    摘要: A correction curve (FIG. 19) is prepared by plotting 12CO2 concentrations and 13CO2/12CO2 concentration ratios which are determined on the basis of a calibration curve and 13CO2 and 12CO2 absorbances of gaseous samples having the same 13CO2/12CO2 concentration ratio but known different 12CO2 concentrations. A gaseous test sample containing 13CO2 and 12CO2 as component gases is introduced into a cell, and spectrometrically measured. A 12CO2 concentration of the gaseous test sample is determined by way of the spectrometric measurement. A concentration ratio correction value is obtained on the basis of the correction curve and the 12CO2 concentration of the gaseous test sample thus determined. A measured 13CO2/12CO2 concentration ratio is divided by the concentration ratio correction value thus obtained for correction of the 13CO2/12CO2 concentration ratio. Thus, the measurement accuracy of the concentration ratios of the component gases can be improved.

    摘要翻译: 通过绘制12CO2浓度和13CO2 / 12CO2浓度比,通过绘制12CO2浓度和13CO2 / 12CO2浓度比来制备校正曲线(13CO2 / 12CO2浓度比),这些浓度比是根据13CO2 / 12CO2浓度比相同但已知不同12CO2的气态样品的校正曲线和13CO2和12CO2吸光度确定的 浓度 将含有作为组分气体的13CO 2和12 CO 2的气态测试样品引入到电池中,并进行光谱测量。 通过光谱测量法测定气态测试样品的12CO2浓度。 基于如此确定的气体试样的校正曲线和12CO 2浓度获得浓度比校正值。 测量的13CO 2 / 12CO 2浓度比除以由此获得的用于校正13CO 2 / 12CO 2浓度比的浓度比校正值。 因此,能够提高成分气体的浓度比的测定精度。