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    • 43. 发明授权
    • NMR measurement method
    • NMR测定法
    • US08072213B2
    • 2011-12-06
    • US12561484
    • 2009-09-17
    • Yusuke Nishiyama
    • Yusuke Nishiyama
    • G01V3/00
    • G01R33/4641G01N24/08G01R33/4608G01R33/4633G01R33/50G01R33/5602G01R33/5605
    • An NMR measurement method adapted for measurements on solid mixture samples starts with irradiating a pulse sequence to the sample in order to measure the longitudinal magnetization relaxation times of nuclei possessing homogeneous longitudinal magnetization relaxation times (step 1). After a lapse of a given period of time t, a high-resolution NMR spectrum is acquired by nullifying spin diffusion across the nuclei (step 2). The steps 1 and 2 are repeated while varying the period of time t. The high-resolution NMR spectra are classified according to value of longitudinal magnetization relaxation time by inverse Laplace transform.
    • 适用于固体混合物样品测量的NMR测量方法开始于向样品照射脉冲序列,以测量具有均匀纵向磁化弛豫时间的核的纵向磁化松弛时间(步骤1)。 在经过给定时间段t之后,通过使跨越核的自旋扩散无效获得高分辨率NMR光谱(步骤2)。 重复步骤1和2,同时改变时间段t。 通过反拉普拉斯变换,高分辨NMR谱根据纵向磁化弛豫时间的值进行分类。
    • 49. 发明授权
    • Method of using G-matrix fourier transformation nuclear magnetic resonance (GFT NMR) spectroscopy for rapid chemical shift assignment and secondary structure determination of proteins
    • 使用G矩阵傅里叶变换核磁共振(GFT NMR)光谱法进行蛋白质快速化学位移分配和二级结构测定的方法
    • US07365539B2
    • 2008-04-29
    • US10973807
    • 2004-10-26
    • Thomas A. SzyperskiSeho KimHanudatta S. Atreya
    • Thomas A. SzyperskiSeho KimHanudatta S. Atreya
    • G01V3/00
    • G01R33/4633G01R33/465Y10T436/24
    • The present invention presents a new approach to rapidly obtaining precise high-dimensional NMR spectral information, named “GFT NMR spectroscopy”, which is based on the phase sensitive joint sampling of the indirect dimensions spanning a subspace of a conventional NMR experiment. The phase-sensitive joint sampling of several indirect dimensions of a high-dimensional NMR experiment leads to largely reduced minimum measurement times when compared to FT NMR. This allows one to avoid the “sampling limited” data collection regime. Concomitantly, the analysis of the resulting checmical shift multiplets, which are edited by the G-matrix transformation, yields increased precision for the measurement of the chemical shifts. Additionally, methods of conducting specific GFT NMR experiments as well as methods of conducting a combination of GFT NMR experiments for rapidly obtaining precise chemical shift assignment and determining the structure of proteins or other molecules are disclosed.
    • 本发明提出了一种快速获得精确的高维NMR光谱信息的新方法,命名为“GFT NMR光谱”,其基于跨过常规NMR实验的子空间的间接尺寸的相敏联合采样。 与FT NMR相比,高维NMR实验的几个间接尺寸的相敏联合取样导致最大测量时间大大降低。 这样可以避免“采样受限”的数据收集制度。 伴随地,通过G矩阵变换编辑的所得到的移动多重点的分析产生了用于化学位移测量的增加的精度。 此外,公开了进行特定GFT NMR实验的方法以及进行GFT NMR实验的组合以快速获得精确的化学位移分配和确定蛋白质或其他分子的结构的方法。