Showing 41 - 60 results of 340 for search '"Nuclear magnetic resonance"', query time: 0.05s Refine Results
  1. 41
  2. 42
  3. 43

    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. …”
    Get full text
    Article
  4. 44

    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. …”
    Get full text
    Article
  5. 45

    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). …”
    Get full text
    Article
  6. 46
  7. 47

    Unusual free trisaccharides in caprine colostrum discovered by logically derived sequence tandem mass spectrometry by Wei-Chien Weng, Hung-En Liao, Cheng-Hsiu Chang, Shang-Cheng Hung, Kai Du, Zhijay Tu, Chun-Hung Lin, Chi-Kung Ni

    Published 2025-01-01
    “…Mass spectrometry has much higher sensitivity than nuclear magnetic resonance spectroscopy and enzyme digestion. …”
    Get full text
    Article
  8. 48
  9. 49

    Dietary inulin supplementation improves meat quality and off-flavor of duck meat referring to regulated muscle fiber types and antioxidant capacity by Hailei Sun, Jia Wang, Jina Han, Xiaolong Li, Juan Zhao, Yimin Zhang, Jingxin Sun

    Published 2025-01-01
    “…Inulin increased the pH24h and the redness of duck meat. Low-field nuclear magnetic resonance confirmed that inulin increased the immobile water content and enhanced water retention in duck meat. …”
    Get full text
    Article
  10. 50

    Structural and Theoretical Studies of 2-amino-3-nitropyridine by N. S. Al-Hokbany, A. A. Dahya, I. Kh. Warad, N. M. Abd El-Salam, S. T. Akriche, M. Rzaiguib, U. Karamac, R. M. Mahfouzc

    Published 2012-01-01
    “…Geometrical optimization, spectroscopic analysis, electronic structure and nuclear magnetic resonance of 2-amino-3-nitropyridine (ANP) were investigated by utilizing ab-initio (MP2) and DFT(B3LYP) using 6-311++G(d,p) basis set. …”
    Get full text
    Article
  11. 51

    Comparison of Aging Performances and Mechanisms: Super-Durable Fire-Resistant “Xuan Paper” Versus Chinese Traditional Xuan Paper by Li-Ying Dong, Ying-Jie Zhu, Jin Wu, Han-Ping Yu

    Published 2025-01-01
    “…The aging mechanism of the traditional Xuan paper was further investigated by studying the fiber length/width and their distributions, morphology, infrared spectroscopy, thermogravimetric analysis, H–nuclear magnetic resonance spectra, and C–nuclear magnetic resonance spectra of cellulose fibers before and after the accelerated aging. …”
    Get full text
    Article
  12. 52

    Integration of NMR and NMRC in the Investigation of the Pore Size Distribution of Tight Sandstone Reservoirs: A Case Study in the Upper Paleozoic of Dongpu Depression by Ning Zhu, Suping Yao, Xuejun Wang, Binfeng Xia, Yunxian Zhang

    Published 2021-01-01
    “…An integration analysis comprising X-ray diffraction (XRD), three beams of argon ion (TIB) polishing approach, scanning electron microscopy (SEM), high-pressure mercury intrusion (HPMI), nuclear magnetic resonance (NMR), and nuclear magnetic resonance cryoporometry (NMRC) was applied to determine the pore structure of the tight sandstone reservoirs in the Upper Paleozoic of Dongpu Depression as well as their relationship with the physical properties of the reservoirs. …”
    Get full text
    Article
  13. 53

    SYSTEM FOR CONTROLLING ELECTRIC DRIVE OF ASPHALT CONCRETE MIXING PLANT by A. S. Surmak, I. F. Kuzmitsky, I. O. Orobey

    Published 2005-06-01
    “…In order to carry out final determination of mixture uniformity a transducer on the basis of a nuclear magnetic resonance is applied. Block diagram of the system is presented and algorithm of its operation is given in the paper. …”
    Get full text
    Article
  14. 54

    Absorption mechanism, structural and electronic properties of MC19 (M = B and Si) fullerenes with 1-acetylpiperazine by Özgür Alver, Cemal Parlak, Mohamed I Elzagheid, Ponnadurai Ramasami

    Published 2018-02-01
    “…Stability, electronic properties, influence of water on the solubility and stability, molecular parameters, descriptive vibrational bands and nuclear magnetic resonance shielding values are reported. The quantum mechanical calculations were carried out using the M06-2X functional and the 6-31G(d) basis set. …”
    Get full text
    Article
  15. 55

    Comprehensive characterization of pore structure in coal seams with abnormal gas emission in deep close range coal seam clusters by Anying YUAN, Xiaolu YANG, Junling HOU, Guangsheng FU

    Published 2024-12-01
    “…The T2 spectrum of saturated water coal samples in three regions shows three peaks in nuclear magnetic resonance time, mainly with short relaxation time. …”
    Get full text
    Article
  16. 56

    Prediction of Four Kinds of Simple Supersecondary Structures in Protein by Using Chemical Shifts by Feng Yonge

    Published 2014-01-01
    “…In this study, a novel model is presented to predict protein supersecondary structure by use of chemical shifts (CSs) information derived from nuclear magnetic resonance (NMR) spectroscopy. Using these CSs as inputs of the method of quadratic discriminant analysis (QD), we achieve the overall prediction accuracy of 77.3%, which is competitive with the same method for predicting supersecondary structures from amino acid compositions in threefold cross-validation. …”
    Get full text
    Article
  17. 57

    Synthesis and Characterization of Some Ni(II) and Cu(II) Complexes with 2-[(4-Aminophenyl)imino]-1, 2-diphenyl-1-ethanone by K. M. Khalifa, A. M. Hamil, A. Gasem, A. Abdulsalam

    Published 2010-01-01
    “…The synthesized ligand and its complexes have been characterized by elemental analysis, infrared, electronic, nuclear magnetic resonance and mass spectra. The metal ligand ratio was found to be 1:1. …”
    Get full text
    Article
  18. 58
  19. 59

    Experimental study on strength degradation and meso-structural characteristics of saturated sandstone under freeze-thaw cycles by Haotian XIE, Ying XU, Qiangqiang ZHENG, Meilu YU, Shoudong XIE, Chengjie LI

    Published 2024-12-01
    “…The area of the nuclear magnetic resonance T2 spectrum increases, along with a corresponding rise in the proportion of intermediate and large pores. …”
    Get full text
    Article
  20. 60

    Molecular-Dynamics Simulation of Self-Diffusion of Molecular Hydrogen in X-Type Zeolite by Xiaoming Du

    Published 2013-01-01
    “…The results indicate that in the temperature range of 77–293 K and the pressure range of 10–2700 kPa, the self-diffusion coefficients are found to range from 1.61 × 10−9 m2·s−1 to 3.66 × 10−8 m2·s−1 which are in good agreement with the experimental values from the quasielastic neutron scattering (QENS) and pulse field gradients nuclear magnetic resonance (PFG NMR) measurements. The self-diffusion coefficients decrease with increasing pressure due to packing of sorbate-sorbate molecules which causes frequent collusion among hydrogen molecules in pores and increase with increasing temperature because increasing the kinetic energy of the gas molecules enlarges the mean free path of gas molecule. …”
    Get full text
    Article