Methods for optimal usage and improved valuation of corrosive petroleum feedstocks and fractions (law521)
    52.
    发明申请
    Methods for optimal usage and improved valuation of corrosive petroleum feedstocks and fractions (law521) 失效
    腐蚀性石油原料和馏分的最佳使用方法和改进的评估方法(法律521)

    公开(公告)号:US20040106204A1

    公开(公告)日:2004-06-03

    申请号:US10663566

    申请日:2003-09-16

    Abstract: The invention is a method to improve the prediction of the corrosivity of organic acids in petroleum crudes, feedstocks and distillation fractions by providing a more accurate, repeatable, and rapid means of determining the TAN from the IR spectrum of the material. The method can be easily practiced in refinery, terminal, and assay laboratories. It can be used in conjunction with models and hardware to optimize the usage and improve the valuation of corrosive feed stocks. The invention can be implemented on-line for blending optimization. It comprises the steps of irradiating a heated petroleum sample with IR radiation to produce its IR absorption spectrum, and predicting the TAN from the spectrum using a linear, multivariate regression model. The IR TAN value is then used as input to blending, valuation, and corrosion models.

    Abstract translation: 本发明是通过提供从材料的IR光谱确定TAN的更准确,可重复和快速的方法来改进对石油原料,原料和蒸馏馏分中有机酸的腐蚀性的预测的方法。 该方法可以在炼油厂,终端和分析实验室中轻松实施。 它可以与型号和硬件结合使用,以优化使用,并提高腐蚀性原料的估价。 本发明可以在线实现混合优化。 它包括以下步骤:用IR辐射照射加热的石油样品以产生其IR吸收光谱,并使用线性多变量回归模型从光谱预测TAN。 然后将IR TAN值用作混合,估值和腐蚀模型的输入。

    Classification and characterization of tissue through features related to adipose tissue
    53.
    发明授权
    Classification and characterization of tissue through features related to adipose tissue 有权
    通过与脂肪组织相关的特征对组织进行分类和表征

    公开(公告)号:US06587702B1

    公开(公告)日:2003-07-01

    申请号:US09489617

    申请日:2000-01-21

    Abstract: A non-invasive system for characterizing and classifying the state and structure of a tissue sample operates on a near infrared absorbance spectrum of in vivo tissue. A method that uses near-infrared spectral measurements to characterize and classify the state and structure of tissue sampled based on absorbance features related to fat in adipose tissue is provided. Also provided is a method of estimating skin fold thickness. The approach provides information about sources of tissue variability and is therefore useful for establishing the general category of the tissue structure. Categorization of subjects on the basis of the determination is suitable for further spectral analysis and the measurement of biological and chemical compounds, such as blood analytes. The invention further provides a method of estimating percent body fat based on a skin fold thickness estimate. The invention also provides an apparatus for measuring the absorbance spectra coupled with a digital processor for performing the required analyses.

    Abstract translation: 用于表征和分类组织样品的状态和结构的非侵入性系统在体内组织的近红外吸收光谱上操作。 提供了一种使用近红外光谱测量来表征和分类基于与脂肪组织中的脂肪相关的吸光度特征所采集的组织的状态和结构的方法。 还提供了估计皮肤褶皱厚度的方法。 该方法提供了关于组织变异性来源的信息,因此可用于建立组织结构的一般类别。 在确定的基础上对受试者进行分类适用于进一步的光谱分析和生物化学化合物如血液分析物的测量。 本发明还提供了一种基于皮肤折叠厚度估计估计身体脂肪百分比的方法。 本发明还提供了一种用于测量与数字处理器耦合的吸光度谱进行所需分析的装置。

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