Showing 161 - 180 results of 340 for search '"Nuclear magnetic resonance"', query time: 0.04s Refine Results
  1. 161

    Self-Healing Photocurable Epoxy/thiol-ene Systems Using an Aromatic Epoxy Resin by Ricardo Acosta Ortiz, Omar Acosta Berlanga, Aída Esmeralda García Valdez, Rafael Aguirre Flores, José Guadalupe Télles Padilla, María Guadalupe Méndez Padilla

    Published 2016-01-01
    “…The oligomer was characterized by Fourier transform infrared spectroscopy (FTIR), Raman and nuclear magnetic resonance spectroscopies, and gel permeation chromatography (GPC). …”
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    Article
  2. 162

    (5E,7E)-4,5,6 Trihydroxy-3-(hydroxymethyl)tetrahydro-2H-pyran-2-ylheptadeca-5,7-dienoate from Euclea crispa (L.) Inhibits Ovarian Cancer Cell Growth by Controlling Apoptotic and Me... by Chella Perumal Palanisamy, Bo Cui, Hongxia Zhang, Selvaraj Jayaraman, Ponnulakshmi Rajagopal, Vishnu Priya Veeraraghavan

    Published 2022-01-01
    “…Further, the compound was confirmed by spectroscopic techniques such as ultraviolet-visible (UV/Vis) spectrometer, Fourier transform infrared (FTIR) spectrometer, and 1H and 13C nuclear magnetic resonance (NMR). Compound 2 exhibited a significant antioxidant activity with IC50 values. …”
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    Article
  3. 163

    Macro-Micro Study on Mechanical Properties of Frozen Fine Sandstone Based on DEM Mathematical Model by Maoyan Ma, Min You, Shuguang Peng, Biao Zhang, Yuan Lin

    Published 2022-01-01
    “…Furthermore, the nuclear magnetic resonance (NMR) technology was used to obtain pore distribution of the freezing sandstone. …”
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    Article
  4. 164

    Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv Pretreatments by Miao Wu, Jinhui Pang, Xueming Zhang, Runcang Sun

    Published 2014-01-01
    “…The isolated lignin fractions were characterized by Fourier transform infrared spectroscopy (FT-IR), high-performance anion exchange chromatography (HPAEC), 2D nuclear magnetic resonance (2D NMR), and thermogravimetric analysis (TGA). …”
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    Article
  5. 165

    Experimental Investigation into the Effects of Fracturing Fluid-Shale Interaction on Pore Structure and Wettability by Yan Zhang, Zhiping Li, Fengpeng Lai, Hao Wu, Gangtao Mao, Caspar Daniel Adenutsi

    Published 2021-01-01
    “…In this study, the pore structure and fluid distribution of shale samples were analyzed by utilizing low-pressure liquid nitrogen adsorption (LP-N2GA) and nuclear magnetic resonance (NMR). The fractal analysis showed that the pore structure of the sample was strongly heterogeneous. …”
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    Article
  6. 166

    A New Method for Artificial Core Reconstruction of a Fracture-Control Matrix Unit by Qiang Liu, Jianjun Liu, Guihong Pei, Zhengwen Zhu, Yun Lei

    Published 2020-01-01
    “…Finally, the porosity, permeability, and wettability of the matrix system and the T2 spectra from nuclear magnetic resonance (NMR) before and after reconstruction are measured. …”
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    Article
  7. 167

    Experimental Research on the Impact of Ion Exchange and Infiltration on the Microstructure of Rare Earth Orebody by Xiaojun Wang, Yulong Zhuo, Shuqiang Deng, Yongxin Li, Wen Zhong, Kui Zhao

    Published 2017-01-01
    “…To detect the evolutional characteristics of pore structure in ore leaching process of ion-type rare earth, this paper analyzes the influence mechanism of ion exchange seepage action on the microstructure of orebody, and an experiment for remodeling rare earth saturated samples and ore leaching was designed. Using nuclear magnetic resonance technology obtains the pore structure T2 map of H2O and (NH4)2SO4 solution in the ore leaching process and inverts and reconstitutes the pore structure distribution image. …”
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    Article
  8. 168

    Potential of glycerol as a bio-based wood adhesive by Jianshu Lu, Tomofumi Umeshita, Shunsuke Sakai, Miyuki Matsuo-Ueda, Daisuke Ando, Shuoye Chen, Kenji Umemura

    Published 2025-02-01
    “…Ether linkages were detected by Fourier transform infrared spectroscopy and heteronuclear single quantum coherence nuclear magnetic resonance spectroscopy. Our results demonstrated that good adhesiveness is achieved by ether linkages resulting from the chemical reaction between glycerol and wood powder.…”
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    Article
  9. 169

    Macroscopic Mechanical Properties and Microscopic Bonding Mechanisms of Glass Fiber-Modified Loess by Le Li, Wanjun Ye, Yang Bai, Yuntao Wu

    Published 2022-01-01
    “…With the help of scanning electron microscopy (SEM), the pores and cracks image analysis system (PCAS) and nuclear magnetic resonance (NMR) tests, the microscopic properties of the improved loess were studied qualitatively and quantitatively from three aspects: mode of structural contact, pore morphological characteristics and pore structure arrangement characteristics. …”
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    Article
  10. 170

    Effects of Antifreeze Proteins on the Quality of Frozen Pork by LIAO Hongmei, WANG Shanglong, ZHANG Baoxue, DING Yinyin, LIU Mingguang, XIONG Guoyuan

    Published 2025-01-01
    “…The shear force and total sulfhydryl content of myofibrillar proteins in the 0.2 and 0.3 mg/mL AFP groups were significantly higher than those of the control group (P < 0.05). nuclear magnetic resonance imaging (NMRI) discovered that the infiltration of AFP reduced the loss of bound and immobile water in pork. …”
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    Article
  11. 171

    Improved Reactivity of Fly Ash-Slag Geopolymer by the Addition of Silica Fume by N. K. Lee, G. H. An, K. T. Koh, G. S. Ryu

    Published 2016-01-01
    “…The silicate structure was also analyzed by nuclear magnetic resonance (NMR) spectroscopy. From these results, it was found that the replacement of fly ash with the silica fume led to a significant decrease in the Q4(1Al) and an increase in the Q4(2Al), Q4(3Al), and Q4(4Al). …”
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  12. 172

    Structural Characterization of Functional Ingredient Levan Synthesized by Bacillus siamensis Isolated from Traditional Fermented Food in Thailand by Nattapong Thakham, Supphasin Thaweesak, Nuttinee Teerakulkittipong, Natthiwut Traiosot, Autaipohn Kaikaew, Gary Antonio Lirio, Witawat Jangiam

    Published 2020-01-01
    “…Structural characterization of levan via Fourier-transform infrared spectroscopy (FTIR) and 1H and 13C nuclear magnetic resonance (NMR) spectroscopy showed β-(2,6)-fructofuranose linkages. …”
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    Article
  13. 173

    Light-induced rearrangement from macrocyclic to bicyclic lactam: A case study of N-chlorinated laurolactam by Zubčić Gabrijel, Pavić Kristina, You Jiangyang, Vrček Valerije, Portada Tomislav, Bešić Erim, Šakić Davor

    Published 2024-12-01
    “…With irradiation provided by a 370 nm lamp, light-induced rearrangement reaction was monitored using nuclear magnetic resonance (NMR), while involved radical intermediates were trapped using N-tert-butyl-α-phenylnitrone (PBN) spin-trap and characterised via EPR. …”
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    Article
  14. 174

    A New Schiff Base Organically Modified Silica Aerogel-Like Material for Metal Ion Adsorption with Ni Selectivity by João P. Vareda, Paulo D. Matos, Artur J. M. Valente, Luisa Durães

    Published 2022-01-01
    “…The inclusion of the Schiff base in the silica network was accomplished by reacting an amine-containing silica precursor with an aldehyde and confirmed by nuclear magnetic resonance (NMR) analysis. The adsorbent shrunk only 10% after evaporative drying, which resulted in a highly porous material (85% porosity, 4 cm3 g−1 specific pore volume). …”
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  15. 175

    Study on Microstructure Differences of Coal Samples before and after Loading by Jiajia Liu, Yingxiang Fang, Gaini Jia, Shouqi Chen, Jianmin Hu

    Published 2020-01-01
    “…In order to study this difference, the authors carried out mercury intrusion experiments on coal containing different coal samples and used nondestructive nuclear magnetic resonance (NMR) techniques, scanning electron microscopy, and transmission electron microscopy, to study the microstructure of coal samples before and after loading. …”
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  16. 176

    Experimental Study on the Mechanical Properties of Sandstone under the Action of Chemical Erosion and Freeze-Thaw Cycles by Lizhuang Cui, Nan Qin, Shuai Wang, Xuezhi Feng

    Published 2021-01-01
    “…For the cohesion degradation, 35.4%, 29.3%, and 27.2% degradation are observed under acidic, alkaline, and neutral solutions. Nuclear magnetic resonance imaging shows that the chemical erosion and freeze-thaw cycles both promote the degradation of rock properties from surface to interior; after 45 freeze-thaw cycles, the mechanical properties drop sharply. …”
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    Article
  17. 177

    Flexural Toughness of Basalt Fibre-Reinforced Shotcrete and Industrial-Scale Testing by Huazhe Jiao, Yachuang Wu, Xinming Chen, Yixuan Yang

    Published 2019-01-01
    “…The flexural performance was analysed based on the toughness standards, namely, DBV-1998, JSCE SF-4, and nuclear magnetic resonance (NMR) pore testing. The results demonstrate that, given a basalt fibre (BF) dosage of 0–7.5 kg/m3, 18 mm BF can significantly increase the residual stress under the same deformation, rather than the peak values of the flexural strength. …”
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  18. 178

    Insight into unusual complex thermodynamical behaviour of citric acid and ethanolamine solution by Reshma Karunakaran, Rajagopal Shanmugasundaram

    Published 2025-01-01
    “…Results of rheometry, Raman, proton nuclear magnetic resonance (1HNMR), photoluminescence (PL) spectroscopy, and thermogravimetric analysis (TGA) of this fluid confirmed this phenomena, collectively. …”
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    Article
  19. 179

    Enhanced Electrochemical Sensor for Electrocatalytic Glucose Analysis in Orange Juices and Milk by the Integration of the Electron-Withdrawing Substituents on Graphene/Glassy Carbo... by Rahadian Zainul, Illyas Md Isa, Siti Nur Akmar Mohd Yazid, Norhayati Hashim, Sharifah Norain Mohd Sharif, Mohamad Idris Saidin, Mohamad Syahrizal Ahmad, M.Si Suyanta, Yulkifli Amir

    Published 2022-01-01
    “…The results of characterizations using a scanning electron microscope, Fourier transform infrared spectroscopy, Raman spectroscopy, and nuclear magnetic resonance spectroscopy showed the successful fabrication of HPMpFP-graphene nanocomposite, which served as an electroactive probe for glucose detection. …”
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    Article
  20. 180

    Uncovering the Hydrocracking Efficiency of Iron-Based Catalysts: A Novel Approach to Asphaltene Transformation in Iranian Heavy Oil by Muzaffer Yaşar, Savaş Gürdal, Kadir Yılmaz

    Published 2024-06-01
    “…To analyze the Iranian heavy asphaltene, Nuclear Magnetic Resonance (1H NMR), Gel Permeation Chromatography (GPC) and elemental analysis were employed. …”
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    Article