Showing 101 - 120 results of 340 for search '"Nuclear magnetic resonance"', query time: 0.03s Refine Results
  1. 101

    Longitudinal Reservoir Evaluation Technique for Tight Oil Reservoirs by Yutian Luo, Zhengming Yang, Zhenxing Tang, Sibin Zhou, Jinwei Wu, Qianhua Xiao

    Published 2019-01-01
    “…In this study, according to the characteristics of longitudinal physical properties of tight oil reservoirs, advanced experimental techniques such as nuclear magnetic resonance, high pressure mercury intrusion, and X-ray diffraction were adopted; the flow capacity, reservoir capacity, ability to build an effective displacement system, and the ability to resist damage in reservoir reconstruction were considered as evaluation indexes; average throat radius, percentage of movable fluid, start-up pressure gradient, and the content of clay minerals were taken as the evaluation parameters. …”
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  2. 102

    Research on Microscopic Pore Structure Characteristics and Producibility of the Chang 9 Reservoir in the Wucangpu Block by Bin Shi, Fangping Chen, Hailong Dang, Zili Jia, Binchi Hou, Lihua Shi, Shengsong Kang, Tao Wang

    Published 2023-01-01
    “…In this paper, the microscopic pore structure characteristics and producibility of the reservoir in the study area are analyzed in detail by means of constant-rate mercury intrusion and nuclear magnetic resonance. The research results show that the reservoir with permeability less than 0.076 mD is mainly composed of microthroat, the reservoir with permeability of 0.208-0.633 mD has a larger proportion of microthin throat, and the reservoir with permeability of 2.722-3.998 mD has a larger proportion of fine-middle throats. …”
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  3. 103

    Dibohemamines I–O from Streptomyces sp. GZWMJZ-662, an endophytic actinomycete from the medicinal and edible plant Houttuynia cordata Thunb. by Dong-Yang Wang, Ming-Xing Li, Yan-Chao Xu, Peng Fu, Wei-Ming Zhu, Li-Ping Wang

    Published 2025-01-01
    “…Their structures were elucidated through detailed spectroscopic analysis, encompassing high-resolution electrospray ionization mass, nuclear magnetic resonance, infrared radiation, ultraviolet–visible, and electronic circular dichroism spectroscopy. …”
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    Article
  4. 104

    Study on the Low Temperature Cracking Mechanism of Steel Slag Asphalt Mixture by Macroscale and Microscale Tests by Lan Wang, Xuefeng Bai

    Published 2022-01-01
    “…The microscopic pore characteristics of SAM were studied by nuclear magnetic resonance (NMR). Based on fracture mechanics and weight function theory, the variation law of the stress intensity factor at the crack tip of the asphalt mixture with crack propagation is derived. …”
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  5. 105

    Identification of Initial Crack and Fracture Development Monitoring under Uniaxial Compression of Coal with High Bump Proneness by Zuoqing Bi, Han Liang, Qianjia Hui

    Published 2021-01-01
    “…The internal crack of the sample is detected by nuclear magnetic resonance (NMR) technology to determine the crack ratio of each sample. …”
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  6. 106

    Advances in Research on the Interaction of Food-derived Polysaccharide and Polyphenol by Jun HE, Mengdie WANG, Xiaoqiang CHEN, Miaomiao YING

    Published 2025-02-01
    “…This paper describes the means of characterizing food-derived polysaccharide and polyphenol interactions, including Fourier transform infrared (FT-IR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy, and interaction mechanisms such as enzyme-catalyzed reactions and free radical-induced reactions was also summarized. …”
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    Article
  7. 107

    Experimental study on influence of Na-bentonite on viscosity of cement-bentonite slurry by Zheng Wei, Wei Cui, Ri-cheng Miao

    Published 2025-07-01
    “…Based on these results, microscopic tests, including X-ray diffraction (XRD), nuclear magnetic resonance (NMR), and field emission scanning electron microscopy (FESEM), were conducted to explain the reasons for the different properties of different bentonite slurries and their CB slurries. …”
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  8. 108

    Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 capture by Syarafana O. Amat, Normawati M. Yunus, Cecilia D. Wilfred

    Published 2025-01-01
    “…The characterization of the ILs was carried out using 1H and 13C nuclear magnetic resonance spectroscopy (NMR) and Fourier-transform infrared spectroscopy (FTIR). …”
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  9. 109

    Enhanced quantum hypothesis testing via the interplay between coherent evolution and noises by Qing Li, Lingna Wang, Min Jiang, Ze Wu, Haidong Yuan, Xinhua Peng

    Published 2025-01-01
    “…We then design and experimentally implement a noise-assisted quantum hypothesis testing protocol on ultralow-field nuclear magnetic resonance systems, which demonstrates that the success probability under certain noisy dynamics can indeed surpass the ceiling set by unitary evolution. …”
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  10. 110

    Brittle Characteristic and Microstructure of Sandstone under Freezing-Thawing Weathering by Songtao Yu, Junren Deng, Hongwei Deng, Feng Gao, Jielin Li

    Published 2020-01-01
    “…Mechanical and Nuclear Magnetic Resonance parameters of sandstone under various Freezing-Thawing (F-T) cycles are also acquired and analyzed. …”
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  11. 111

    Metabolomic Signatures Influenced by Different Cardioplegic Solutions in Cardiac Surgery by Chananya Karunasumetta, Chotika Chatgasem, Suriya Punchai, Kittisak Sawanyawisuth

    Published 2024-12-01
    “…Pre- and postoperative plasma samples were collected for analysis of cardiac enzyme levels and proton nuclear magnetic resonance metabolomic profiling. Results: No significant differences in clinical outcomes or cardiac enzyme levels were observed between the groups. …”
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  12. 112

    Application of Artificial Neural Network in the Baking Process of Salmon by Pengfei Jiang, Kaiyue Zhu, Shan Shang, Wengang Jin, Wanying Yu, Shuang Li, Shen Wang, Xiuping Dong

    Published 2022-01-01
    “…This paper deals with the relationship between moisture content, low-field nuclear magnetic resonance (LF-NMR), scanning electron microscope (SEM), and sensory evaluation in the baking process of salmon. …”
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  13. 113

    Insights into the Allosteric Regulation of Human Hsp90 Revealed by NMR Spectroscopy by Tjaša Goričan, Simona Golič Grdadolnik

    Published 2024-12-01
    “…Since no experimentally determined structure of a small-molecule allosteric modulator bound to the CTD of human Hsp90 has yet been obtained, the challenge for a structure-based design of allosteric modulators remains. Solution nuclear magnetic resonance (NMR) spectroscopy could be utilized to overcome these problems. …”
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  14. 114

    NMR Pore Structure and Dynamic Characteristics of Sandstone Caused by Ambient Freeze-Thaw Action by Bo Ke, Keping Zhou, Hongwei Deng, Feng Bin

    Published 2017-01-01
    “…For a deeper understanding of the freeze-thaw weathering effects on the microstructure evolution and deterioration of dynamic mechanical properties of rock, the present paper conducted the nuclear magnetic resonance (NMR) tests and impact loading experiments on sandstone under different freeze-thaw cycles. …”
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  15. 115

    Characterization of Jamaican Delonix regia and Cassia fistula Seed Extracts by Andrea Goldson Barnaby, Raymond Reid, Vaughn Rattray, Ruth Williams, Marcel Denny

    Published 2016-01-01
    “…Lipid extracts were characterized by nuclear magnetic resonance spectroscopy and gas chromatography/mass spectrometry. …”
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  16. 116

    Impact of Petrophysical Properties on Hydraulic Fracturing and Development in Tight Volcanic Gas Reservoirs by Yinghao Shen, Mianmo Meng, Tao Liu, Hongkui Ge, Yuelei Zhang

    Published 2017-01-01
    “…Experiments were performed to study the petrophysical properties of a volcanic reservoir and the spontaneous imbibition is monitored by nuclear magnetic resonance (NMR) and pulse-decay permeability. …”
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  17. 117

    Microscopic Response of Limestone Physical Deterioration under Water-Rock Alternation in the Acidic Environment by Wei Liang, Ke Li, Jiashun Luo, Mengtang Xu, Fushou Feng

    Published 2022-01-01
    “…The increase rate of mass deterioration degree decreases with the increase of cycle number, the maximum average value can reach 61.887% at the beginning of cycles and is relatively stable at 20~25 cycles, and the average value at the end of cycle is obviously reduced by 3.167%. The nuclear magnetic resonance (NMR) test shows that the number and size of pores in the rock gradually increase with the increase of the number of wetting-drying cycles, and the wetting-drying cycles aggravate the internal damage of the rock. …”
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  18. 118

    New Boric Acid Derivative with Some of Its Complexes and Study the Biological and Anticancer Activity by Alaa Abdullah Majeed, Asmaa Mohammed Noori

    Published 2025-01-01
    “…Spectral methods such as Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, and proton nuclear magnetic resonance (1H-NMR) spectra, along with thermal analysis (TG/DTA), elemental analysis (CHN), and melting point, were used to characterize the synthesized compounds. …”
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  19. 119

    Polymerization and modeling of phenolic resins from crude wood resin in the presence of AlCl3 by Ömür Aras, Murat Ertaş, Muhammed Yusuf Aksakal, Naile Angın, Merve Genç

    Published 2024-12-01
    “…The synthesized TRFR samples were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Nuclear Magnetic Resonance Spectroscopy (NMR), acid number, saponification number and softening point analyses. …”
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  20. 120

    Quantitative Characterization Model of Macroscopic Mechanical Properties of Recycled Concrete Based on Porosity and Pore Sizes by Haiyu Chen, Fuwei Xu

    Published 2024-01-01
    “…By utilizing nuclear magnetic resonance technology to scan the porosity and pore structure of the recycled concrete, an analysis was performed on the correlation between the macroscopic mechanical properties of the recycled concrete and pore sizes (most available pore size, mean pore size, and critical pore size). …”
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