Showing 201 - 220 results of 340 for search '"Nuclear magnetic resonance"', query time: 0.05s Refine Results
  1. 201

    Conductive supramolecular acrylate hydrogels enabled by quaternized chitosan ionic crosslinking for high-fidelity 3D printing by Lukas A. Bauman, Boxin Zhao

    Published 2025-03-01
    “…This yielded high-fidelity 3D-printed conductive supramolecular hydrogels with tensile properties of 288±29 kPa at 516±37 % elongation and compressive properties of 572±34 kPa at 65±4 % strain with uniform swelling (320–350 %). Nuclear magnetic resonance and conductivity measurements confirmed SPA-rich blocks within the hydrogel network and the solvent-dependent copolymer structure. …”
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  2. 202

    Systematic Exploration of the Knowledge Graph on Rock Porosity Structure by Chengwei Geng, Fei Xiong, Yong Liu, Yun Zhang, Yi Xue, Tongqiang Xia, Ming Ji

    Published 2024-12-01
    “…This paper provides a comprehensive overview of the main technical methods employed in recent research on rock porosity structure, including X-ray computed tomography, scanning electron microscopy, nuclear magnetic resonance, and 3D reconstruction technologies. …”
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  3. 203

    Effect of curing temperature freeze-thaw failure mechanism and damage model of equal-strength air-entrained concrete. by YongHe Liu, Bo Yang, Aojun Guo

    Published 2024-01-01
    “…The pore structure characteristics of concrete subjected to freeze-thaw (F-T) damage (FTD) under different curing methods were analyzed using nuclear magnetic resonance. The study results show that when the air content is constant, the compressive strength of concrete (CSC) tends to decrease with the curing temperature. …”
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  4. 204

    Epidemiological, clinical and imaging profile of Multiple Sclerosis by Làzaro Aurelio Vàzquez Gòmez, Carlos Hidalgo Mesa, Benita Mabel Beltrán González, Yunier Broche Pérez, Ana María Mederos Herrera

    Published 2021-12-01
    “…Disability evaluated as minimal was found in 50 patients and 31 patients had 2 to 4 lesions on nuclear magnetic resonance.<br /><strong>Conclusions:</strong> Adequate epidemiological information on patients with multiple sclerosis in Villa Clara was obtained satisfactorily. …”
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    Article
  5. 205

    Creep Characteristics of Different Saturated States of Red Sandstone after Freeze-Thaw Cycles by Yongxin Che, Yongjun Song, Jianxi Ren, Jiaxing Chen, Xixi Guo, Hao Tan, Mengling Hu

    Published 2021-01-01
    “…To investigate the creep mechanical characteristics of rocks in different saturated states after freeze-thaw cycles, samples with different saturations (30%, 50%, 70%, 90%, and 100%) were selected for nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), and uniaxial compression creep tests. …”
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  6. 206

    Experimental Study on Mechanical Property and Pore Distribution of Limestone Specimens after Heat Treatment under Different Heating Conditions by Yujie Feng, Haijian Su, Qian Yin, Liyuan Yu, Yingchao Wang

    Published 2021-01-01
    “…Then, physical, mechanical, and nuclear magnetic resonance (NMR) tests were carried out to investigate the effect of heating conditions on the rock properties. …”
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    Article
  7. 207

    Heavy Oil Residue Upgrading With Iron Based Catalysts Under High Hydrogen Pressure by Muzaffer Yaşar, Solmaz Akmaz, Savaş Gürdal, Kadir Yılmaz

    Published 2021-12-01
    “…Gel Permeation Chromatography (GPC), Nuclear Magnetic Resonance (1H NMR) and elemental analysis were used for Iranian heavy oil residue. …”
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  8. 208

    Suppression of mycotoxins production and efficient chelation of heavy metals using natural melanin originated from Aspergillus flavus and Aspergillus carbonarius by Nashwa El-Gazzar, Esraa Abdo, Gamal Rabie, Manal Tawfeek El-Sayed

    Published 2025-01-01
    “…The melanin of the most potent producers has undergone several confirmatory experiments, including, Dihydroxyphenylalanine (DOPA)-inhibitor-kojic acid pathway detection, High-performance liquid chromatography (HPLC), Fourier-transform infrared (FTIR) and Nuclear magnetic resonance (NMR). Additionally, the melanin production culture conditions were optimized. …”
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  9. 209

    Integrated analysis of cellulose structure and properties using solid-state low-field H-NMR and photoacoustic spectroscopy by Levente Csóka, Worakan Csoka, Ella Tirronen, Ekaterina Nikolskaya, Yrjö Hiltunen, Bunsho Ohtani

    Published 2025-01-01
    “…Specifically, we employ low-field proton nuclear magnetic resonance (H-NMR) to delve into the diverse hydrogen atom types within the cellulose molecule. …”
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    Article
  10. 210

    Synthesis, Characterization, and Aqueous Properties of an Amphiphilic Terpolymer with a Novel Nonionic Surfmer by Qin Yu, Xiaolin Wu, Yanqiu Li, Tenglong Gao, Siliang Liu, Caiqing Hou, Zirong Zheng

    Published 2018-01-01
    “…The aggregative behaviors of PAADs were explored by 13C nuclear magnetic resonance, a viscometer, and a surface tension instrument. …”
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  11. 211

    Influence of Drying–Wetting Cycles on the Water Retention and Microstructure of Residual Soil by Xu-tang Xu, Dao-qi Liu, Zhen-xing Xian, Feng Yang, Wen-bin Jian, Xiang Xu, Jian-bin Huang

    Published 2022-01-01
    “…The pressure plate test and nuclear magnetic resonance (NMR) spectroscopy were used to investigate the influence of drying–wetting cycles on the soil–water characteristic curve (SWCC) and pore-size distribution (POSD) of undisturbed residual soil. …”
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  12. 212

    Mechanism Analysis of the Influence of Freeze-Thaw on the Damage and Debonding Evolution of Sandstone-Concrete Interface by Yanjun Shen, Tao Luo, Xin Wei, Xueting Li, Long Jin, Liangdong Wen, Hui Peng, Yanjun Ji

    Published 2022-01-01
    “…Accordingly, based on the combination of sandstone-concrete as the object, through the development of sandstone-concrete interface freeze-thaw cycling test, and combining the nuclear magnetic resonance (NMR) test and scanning electron microscopy (SEM) analysis, the mechanism of debonding by freeze-thaw damage at the sandstone-concrete interface was systematically revealed. …”
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  13. 213

    Experimental study on the influencing factors and pore production law of CO2 huff-and-puff in tight sandstone reservoirs by Zhe Zhang, Jian Sun, Zhihao Niu, Zhilin Tuo, Xinyu Zhong, Xiaolei Zheng, Rongjun Zhang

    Published 2025-01-01
    “…Combined with nuclear magnetic resonance technology, the influences of injection pressure, cycle numbers and soaking time on the CO2 huff-and-puff effect were evaluated, and the optimal CO2 huff-and-puff parameters were optimized. …”
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  14. 214

    Azurin a potent anticancer and antimicrobial agent isolated from a novel Pseudomonas aeruginosa strain by Nourhan A. Zaghloul, Mona K. Gouda, Yasser Elbahloul, Nancy M. El Halfawy

    Published 2025-01-01
    “…The partially purified azurin protein was characterized using polyacrylamide gel electrophoresis, energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, and nuclear magnetic resonance spectroscopy. Notably, qualitative elemental analysis by EDX showed the presence of copper and sulfur, corresponding to the copper-core and disulfide-bridge, respectively, in the purified azurin fraction. …”
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  15. 215

    Effect of Pea Resistant Starch on Emulsion Gel Properties and in Vitro Digestibility of Myofibrillar Proteins by CHEN Jinyu, HU Fangyang, JI Zhirui, WU Zijian

    Published 2024-12-01
    “…The chemical force results showed that the addition of pea RS3 led to enhanced hydrophobic interaction and disulfide bonding between MP molecules. Low field-nuclear magnetic resonance (LF-NMR) confirmed that pea RS3 addition facilitated the migration of free water to immobilized water. …”
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  16. 216

    Studies on Hydration Swelling and Bound Water Type of Sodium- and Polymer-Modified Calcium Bentonite by Yong Wan, Dongdong Guo, Xinminnan Hui, Lei Liu, Yuan Yao

    Published 2020-01-01
    “…In this study, free swell index (FSI) and the type and content of modified Ca-bentonite bound water under the inorganic chemical solution were quantitatively studied by using the free swell test and nuclear magnetic resonance (NMR). According to the results, modification of sodium and polymer significantly increases the FSI of Ca-bentonite, bringing it close to that of natural sodium bentonite. …”
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  17. 217

    Pivotal roles of biglycan and decorin in regulating bone mass, water retention, and bone toughness by Rui Hua, Yan Han, Qingwen Ni, Roberto J. Fajardo, Renato V. Iozzo, Rafay Ahmed, Jeffry S. Nyman, Xiaodu Wang, Jean X. Jiang

    Published 2025-01-01
    “…Bgn deficiency, but not Dcn deficiency, decreased trabecular bone mass, with more pronounced bone loss in dKO mice. Low-field nuclear magnetic resonance measurements showed a marked decrease in bound water among all KO groups, especially in Bgn KO and dKO mice. …”
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  18. 218

    Effects of Bamboo Shoot Dietary Fiber on Mechanical Properties, Moisture Distribution, and Microstructure of Frozen Dough by Hua Zhang, Yanyan Zhang, Xintian Wang, Qisen Xiang, Yanhong Bai, Suyun Li, Lixin Yang

    Published 2017-01-01
    “…The state and distribution of water in frozen dough was determined by differential scanning calorimetry (DSC) and low-field nuclear magnetic resonance (LNMR) spectroscopy. The microstructure of frozen dough was studied. …”
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  19. 219

    Factors Influencing the Pore Structure and Gas-Bearing Characteristics of Shales: Insights from the Longmaxi Formation, Southern Sichuan Basin and Northern Yunnan-Guizhou Depressio... by Li Dong, Changcheng Han, M. Santosh, Yongkai Qiu, Geng Liu, Jinghui Ma, Hao He, Chenlin Hu

    Published 2022-01-01
    “…We employed scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), gas content testing, gas saturation testing based on nuclear magnetic resonance (NMR), overburden porosity and permeability analysis, distribution of pore size, specific surface area (SSA) analysis, and geochemical analysis. …”
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  20. 220

    Synthesis, Characterization, and Cytotoxicity Research of Sulfur-Containing Metal Complexes by Yanting Yang, Danqin Li, Mei Luo

    Published 2025-01-01
    “…The structure of the complex was analyzed using infrared Fourier transform infrared spectroscopy (FT-IR), ultraviolet–visible spectroscopy (UV–Vis), nuclear magnetic resonance (NMR), and electrospray mass spectrometry (ESI-MS), and the thermal stability and composition of the complex were detected via thermogravimetry (TGA). …”
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