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    • 21. 发明授权
    • Electrophoresis and fluorescence detection method
    • 电泳和荧光检测方法
    • US5786142A
    • 1998-07-28
    • US452719
    • 1995-05-30
    • John A. RenfrewJames W. Cassidy
    • John A. RenfrewJames W. Cassidy
    • G01N27/447G01N30/86C12Q1/68B01D61/42C25B1/00G01N15/06
    • G01N27/44721G01N30/8603
    • An improved electrophoresis and fluorescence detection method for nucleotide sequences comprises a fluorescence sensing region along the path of nucleotide detection, coupled with amplification and integration in an integrator of output signals in the form of activity peaks. The output signal, which is converted to a voltage signal, is summed with a programmable offset generated by an inexpensive eight-bit D/A converter. The offset signal is selected to establish a lower starting point for the dynamic range of analog-digital conversion, and is selected to null some or all of the background fluorescence level. The integrator is switchable under program control. The integrator is switched on for long and short integration intervals. The short intervals permit sensing over a dynamic range accommodating very high levels of fluorescence; very high peaks may be measured and features of the peaks distinguished. The long intervals permit sensing over a dynamic range that is optimized for the peaks associated with the smaller peaks of individual nucleotides. In this way, the dynamic range of the analog-digital conversion permits the highest possible resolution over the range of interest during the time in which the sequencing of the nucleotides takes place. The method of nucleotide sequencing and analysis is fast, economical, and yields data with high resolution.
    • 用于核苷酸序列的改进的电泳和荧光检测方法包括沿着核苷酸检测途径的荧光感测区域,以及在活性峰形式的输出信号的积分器中的放大和积分。 转换为电压信号的输出信号与由廉价的八位D / A转换器产生的可编程偏移相加。 选择偏移信号以建立模拟数字转换的动态范围的较低起始点,并选择为零部分或全部背景荧光水平。 集成商可在程序控制下切换。 积分器接通长和短的积分间隔。 短时间间隔允许在适应非常高水平荧光的动态范围内进行感测; 可以测量非常高的峰,并区分峰的特征。 长间隔允许感测针对与各个核苷酸的较小峰相关联的峰优化的动态范围。 以这种方式,模拟数字转换的动态范围允许在发生核苷酸测序的时间内在感兴趣的范围内达到最高可能的分辨率。 核苷酸测序和分析的方法快速,经济,并且产生高分辨率的数据。
    • 29. 发明申请
    • Method and System for Detecting Peptide Peaks in HPLC-MS Signals
    • HPLC-MS信号中检测肽峰的方法和系统
    • US20100161238A1
    • 2010-06-24
    • US12602319
    • 2008-05-30
    • Salvatore CappadonaLinda PattiniSergio CeruttiPeter JamesFredrik Levander
    • Salvatore CappadonaLinda PattiniSergio CeruttiPeter JamesFredrik Levander
    • G01N30/86H01J49/26G06F19/00
    • G01N30/8675G01N30/8603G01N30/8617G01N30/8641
    • The present invention relates to a method, a computer tool and a system for detecting peptide peaks in measurement signals (11) generated by HPLC-MS instruments. The method comprises the steps of: providing an intensity column vector (SIC) representative of the elution values at a specific mass value (m/z) of the measurement signal (11); cam. performing a wavelet decomposition (15) of such values of said intensity column vector (SIC) to generate a first processed vector (16) representative of the smoothed intensity values of the intensity column vector (SIC); providing a threshold value (S) and performing a wavelet decomposition (17) as a function of the value of said threshold (S) to generate the second processed vector (18) representative of said intensity column vector (SIC) cleaned of any oscillations generated by stochastic noise (e(t)); processing said first processed vector (16) and said second processed vector (18) to generate a third processed vector (19) identifying the baseline values of said intensity column vector (SIC); processing said intensity column vector (SIC) and said second (18) and third (19) vectors to generate e filtered vector (20) identifying any peak value (ZJ) below the background noise (12).
    • 本发明涉及一种用于检测由HPLC-MS仪器产生的测量信号(11)中的肽峰的方法,计算机工具和系统。 该方法包括以下步骤:提供代表测量信号(11)的特定质量值(m / z)的洗脱值的强度列向量(SIC); 凸轮 执行所述强度列向量(SIC)的这些值的小波分解(15)以产生表示强度列向量(SIC)的平滑强度值的第一处理向量(16); 提供阈值(S)并且作为所述阈值(S)的值的函数执行小波分解(17),以生成代表产生的任何振荡的所述强度列向量(SIC)的第二处理向量(18) 通过随机噪声(e(t)); 处理所述第一处理向量(16)和所述第二处理向量(18)以产生识别所述强度列向量(SIC)的基线值的第三处理向量(19); 处理所述强度列向量(SIC)和所述第二(18)和第三(19)向量,以产生识别低于背景噪声(12)的任何峰值(ZJ)的滤波向量(20)。
    • 30. 发明授权
    • Method, apparatus, and article of manufacture for enhanced intergration
of signals
    • 用于增强信号整合的方法,装置和制造
    • US6112161A
    • 2000-08-29
    • US932150
    • 1997-09-17
    • Paul C. DrydenBruce D. Quimby
    • Paul C. DrydenBruce D. Quimby
    • G01N30/86
    • G01N30/8603G01N30/8624G01N2030/8854G01N30/8606G01N30/8641
    • A method, apparatus, and article of manufacture for enhanced integration of signals, such as those generated by chromatographs. In one embodiment an approximate baseline used for integration of a signal is improved to reduce error. Alternate embodiments filter drift, noise, or both from a signal prior to integration or simulated distillation. The signals are processed according to a computer program stored in a memory. The methods include steps for subtracting an approximate baseline from the signal, defining a noise band in the resulting difference, and forming a composite baseline by substituting signal data for baseline data wherever the difference does not exceed the threshold, thus leaving the parts of the approximate baseline that correspond to signal peaks unchanged.
    • 用于增强信号集成的方法,装置和制品,例如由色谱仪产生的信号。 在一个实施例中,用于信号积分的近似基线被改进以减少误差。 替代实施例在集成或模拟蒸馏之前从信号滤波漂移,噪声或二者。 信号根据存储在存储器中的计算机程序进行处理。 这些方法包括从信号中减去近似基线的步骤,在所得到的差值中定义噪声带,并通过将信号数据代入基线数据形成复合基线,无论差值不超过阈值,因此留下近似的部分 对应于信号峰的基线不变。