Showing 21 - 40 results of 280 for search '"nuclear magnetic resonance"', query time: 0.08s Refine Results
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    Nanoscale Pore Structure Characterization and Permeability of Mudrocks and Fine-Grained Sandstones in Coal Reservoirs by Scanning Electron Microscopy, Mercury Intrusion Porosimetry, and Low-Field Nuclear Magnetic Resonance by Na Zhang, Fangfang Zhao, Pingye Guo, Jiabin Li, Weili Gong, Zhibiao Guo, Xiaoming Sun

    Published 2018-01-01
    “…Meanwhile, pore types, pore morphologies, and pore size distributions (PSD) were determined by focused ion beam scanning electron microscopy (FIB-SEM), mercury intrusion porosimetry (MIP), and low-field nuclear magnetic resonance (NMR). FIB-SEM image analyses showed that the mineral matrix pores including interparticle (interP) and intraparticle (intraP) pores with varied morphologies are the dominant pore types of the investigated rock samples while very few organic matter (OM) pores were observed. …”
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    Water phase distribution and its dependence on internal structure in soaking maize kernels: a study using low-field nuclear magnetic resonance and X-ray micro-computed tomography by Baiyan Wang, Baiyan Wang, Shenghao Gu, Juan Wang, Guangtao Wang, Xinyu Guo, Chunjiang Zhao, Chunjiang Zhao

    Published 2025-01-01
    “…Although temporal dynamics of grain moisture and its functional and environmental determinants have been broadly demonstrated, we still do not have a comprehensive understanding of the distribution of water phase within a kernel.MethodsWe investigated the relationship between tissue structural traits, including embryo volume (EMBV), endosperm volume (ENDV), vitreous endosperm volume (VEV), floury endosperm volume (FEV), and water content in different phases, such as bound water, semi-bound water, and free water, in maize kernels under different cultivars, nitrogen application rates, and soaking durations by combining low-field nuclear magnetic resonance (LF-NMR) and X-ray microcomputed tomography (μ-CT) for kernels.ResultsThe results demonstrate that bound water is the major phase (57-82%) in maize kernels, and this proportion decreases with prolonged soaking duration. …”
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    Research and Analysis on the Cultivation of Intelligent Transportation Technology Professionals under the Background of Integration of Production and Education by Ying Zhang, Yongxiang Zhu

    Published 2022-01-01
    “…In the process of data processing of industry-education fusion, this paper demodulates the nuclear magnetic resonance signal obtained after A/D conversion from the carrier frequency signal and places it at zero frequency. …”
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    Relationship between Permeability Coefficient and Fractal Dimension of Pore in Ionic Rare Earth Magnesium Salt Leaching Ore by Dan Wang, Yunzhang Rao, Liang Shi, Wei Xu, Tao Huang

    Published 2022-01-01
    “…In the process of MgSO4 solution and deionized water leaching, the T2 spectrum and inversion image at each time were obtained by nuclear magnetic resonance (NMR). Based on the fractal theory, the pore structure change of the inversion image was quantitatively analysed, and the permeability coefficient of samples at each time of different leaching agents was calculated by using supercritical Dubinin-Redushckevich (SDR) model to analyse the nuclear magnetic resonance T2 spectrum. …”
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    Quantitative Analysis of Flavonoids in Glycyrrhiza uralensis Fisch by 1H-qNMR by Ping Yu, Qian Li, Yanmei Feng, Yuying Chen, Sinan Ma, Xiaoqin Ding

    Published 2021-01-01
    “…To establish a method for simultaneous determination of liquiritin, liquiritigenin, and isoliquiritinin glycyrrhizin using hydrogen nuclear magnetic resonance quantitative technology (1H-qNMR). …”
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