Showing 261 - 280 results of 340 for search '"Nuclear magnetic resonance"', query time: 0.05s Refine Results
  1. 261

    Purification and Characterization of a Low Molecular Weight Neutral Non-Starch Polysaccharide from Panax ginsen g by Enzymatic Hydrolysis by Ying Ying, Chao Ma, Yajie Zhang, Xiaoping Li, Hongxin Wu

    Published 2023-02-01
    “…Chemical characteristics, monosaccharide compositions and structure of GP1A were investigated using scanning electron microscopy, gel permeation chromatography, X-ray diffraction, Fourier transform infrared spectroscopy, gas chromatography with mass spectrometer, one-dimensional and two-dimensional nuclear magnetic resonance. The results indicated that the lyophilized GP1A was a homogeneous polysaccharide with a low molecular weight of 1.03 kDa. …”
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  2. 262

    Carbonic Anhydrase IX Targeted Polyaspartamide fluorescent Probes for Tumor imaging by Zhang Y, Liu F, Shao C, Huang J, Yan G

    Published 2025-01-01
    “…These derivatives were also characterized by Fourier transform infrared spectroscopy, gel permeation chromatography, ultraviolet-visible spectroscopy, nuclear magnetic resonance spectroscopy and fluorescence assays. …”
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  3. 263

    Structural Characterization of Polygonum divaricatum L. Polysaccharide and Its Inhibitory Effect on Lipopolysaccharide-Induced Inflammation in RAW264.7 Cells by CUI Yanyan, YUAN Yongxu, GUO Mingkun, HE Wenbing, LI Ming, PEI Shichun, LI Dajun

    Published 2024-12-01
    “…Methods: The structure of PSPDL was characterized using high-performance gel permeation chromatography (HPGPC), high-performance liquid chromatography (HPLC), Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and nuclear magnetic resonance spectroscopy (NMR). The in vitro anti-inflammatory activity and action mechanism of PSPDL were investigated in lipopolysaccharide (LPS)-induced RAW264.7 cells. …”
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  4. 264

    Potential of Co(II) and Cd(II) chelates of N′-(3-fluorobenzoyl)benzo[d]thiazole-2-carbohydrazide: Structural aspects, binding interactions, biological and molecular docking studies... by K. Srilaxmi, B. Sireesha

    Published 2025-01-01
    “…N′-(3-fluorobenzoyl)benzo[d]thiazole-2-carbohydrazide (MFBBTCH, HL) and its chelates with Co(II) and Cd(II) have been synthesized and characterized by elemental analyses, liquid chromatography-mass spectrometry (LC-MS), Fourier Transform Infrared Spectroscopy (FT-IR), ultra-violet visible (UV–vis), nuclear magnetic resonance (NMR) spectroscopy, thermogravimetric analysis (TGA) and conductivity measurements. …”
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  5. 265

    Experimental Study of the Flow Mechanism of Deep Lacustrine Carbonate Reservoirs in the Yingxi Area of the Qaidam Basin by Xiangrong Luo, Yongxian Zheng, Penggang Huang, Li’an Yang, Xiaodong Chen, Xiaojuan Ren, Guo Wang, Yanzhi Wang, Zhiguo Wang, Xiaoxiao Li

    Published 2022-01-01
    “…In contrast, the water phase relative permeability of the matrix core is less than 0.2. The nuclear magnetic resonance (NMR) transverse relaxation time (T2) spectra were used to analyze the differences between the water flooding characteristics of the two pore structures. …”
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  6. 266

    Design of high uniform magnetic field with four coils based on improved wolf pack algorithm by Xuehua Zhu, Juntao Ye, Ziruo Ren, Xinyu Liu

    Published 2025-01-01
    “…Uniform magnetic fields are commonly utilized in scientific and engineering domains for a variety of purposes, such as atomic magnetometers, nuclear magnetic resonance, and other magnetic tools. However, the conventional Helmholtz coils have limitations in generating the highly uniform magnetic fields required for larger devices. …”
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  7. 267

    Recombinant production platform for Group A Streptococcus glycoconjugate vaccines by Sowmya Ajay Castro, Ian J. Passmore, Didier Ndeh, Helen Alexandra Shaw, Alessandro Ruda, Keira Burns, Sarah Thomson, Rupa Nagar, Kathirvel Alagesan, Mark Reglinski, Kieron Lucas, Sherif Abouelhadid, Ulrich Schwarz-Linek, Fatme Mawas, Göran Widmalm, Brendan W. Wren, Helge C. Dorfmueller

    Published 2025-01-01
    “…The structural integrity of the produced recombinant glycoconjugate vaccines was confirmed by Nuclear Magnetic Resonance (NMR) spectroscopy and mass spectrometry. …”
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  8. 268

    Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride Organogels by Zong Meng, Lijun Yang, Wenxin Geng, Yubo Yao, Xingguo Wang, Yuanfa Liu

    Published 2014-01-01
    “…The isothermal and nonisothermal crystallization kinetics of monoglyceride (MAG) organogels were studied by pulsed nuclear magnetic resonance (pNMR) and differential scanning calorimetry (DSC), respectively. …”
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  9. 269

    New Plastitar Record for the Mediterranean Sea: Characterization of Plastics and Tar from the Salento Peninsula (Ionian Sea) by Silvia Fraissinet, Emanuele Mancini, Chiara Funiati, Caterina Martino, Giuseppe Egidio De Benedetto, Chiara Roberta Girelli, Francesco Paolo Fanizzi, Genuario Belmonte, Stefano Piraino

    Published 2024-12-01
    “…Here, the composition of the 11 plastitar blocks collected on the Ionian side of the Apulia region (Italy) was characterized both in tar and plastics using nuclear magnetic resonance (NMR) spectroscopy and Fourier transform infrared (FTIR) spectroscopy, respectively. …”
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  10. 270

    Antimicrobial Activity of Aspergillus sp. from the Amazon Biome: Isolation of Kojic Acid by Josy Caldas Rodrigues, Weison Lima da Silva, David Ribeiro da Silva, Carolina Rabelo Maia, Clarice Virginia Santos Goiabeira, Haile Dean Figueiredo Chagas, Gigliola Mayara Ayres D’Elia, Gleica Soyan Barbosa Alves, Viviane Zahner, Cecilia Veronica Nunez, Ormezinda Celeste Cristo Fernandes

    Published 2022-01-01
    “…The fractions of interest had their chemical constituents elucidated by nuclear magnetic resonance and mass spectrometry. The elucidated molecule was evaluated for cytotoxicity against the human fibroblast strain (MRC5). …”
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  11. 271

    Fuzzy Random Characterization of Pore Structure in Frozen Sandstone: Applying Improved Niche Genetic Algorithm by Yao Ya-feng, Lin Jian, Ge Jian, Peng Shi-long, Yin Jian-chao, Ouyang Li-na

    Published 2021-01-01
    “…Nuclear magnetic resonance (NMR) technology provides an innovative method employed in detecting the porous structures in frozen rock and soil masses. …”
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    Article
  12. 272

    Significance of siderophore-producing cyanobacteria on enhancing iron uptake potentiality of maize plants grown under iron-deficiency by Mandees Bakr Brick, Mervat H. Hussein, Amr M. Mowafy, Ragaa A. Hamouda, Amr M. Ayyad, Dina A. Refaay

    Published 2025-01-01
    “…The proton nuclear magnetic resonance (1H NMR) analysis data and the Fourier transformer-infrared spectrum analysis (FT-IR) signify the hydroxamate nature of Synechococcus mundulus isolated siderophore. …”
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  13. 273

    Developing novel Lin28 inhibitors by computer aided drug design by Victor M. Matias-Barrios, Mariia Radaeva, Graciella Rosellinny, Qiongqiong Jia, Ning Xie, Monica Villanueva, Hanadi Ibrahim, Jason Smith, Martin Gleave, Nada Lallous, Suzana K. Straus, Artem Cherkasov, Xuesen Dong

    Published 2025-01-01
    “…Results from nuclear magnetic resonance spectroscopy confirmed that Ln268 perturbs the conformation of the zinc knuckle domain of Lin28, validating the rational drug design by CADD. …”
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  14. 274

    Mechanistic studies on the effect of endogenous proteins on the starch retrogradation characteristics of corn before and after postharvest ripening by Nannan Hu, Weihua Qi, Jinying Zhu, Fuyin Zhao, Lin Xiu, Mingzhu Zheng, Jingsheng Liu

    Published 2025-01-01
    “…In addition, low field strength nuclear magnetic resonance (LF-NMR) analyses also revealed that proteins inhibited starch retrogradation by isolating the precipitation of free water during retrogradation, causing the decrease in the viscoelasticity and firmness of the starch gel. …”
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  15. 275

    Quantitative Characterization of Full-Spectrum Pore Size and Connectivity for Shale with Different Sedimentary Facies from the Dongying Depression, Bohai Bay Basin, East China by Yushan Du, Na Yin, Qinhong Hu, Mianmo Meng, Xiuchuan Zhu, Jing Chao, Cunfei Ma

    Published 2022-01-01
    “…The T2 spectra of nuclear magnetic resonance tests for the “high TOC laminated clayey marlstone” facies which contains abundant calcite laminae and organic matter-hosted pores commonly show three peaks, with a dominant peak at less than 300 nm in diameter and good pore connectivity. …”
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  16. 276

    Seepage mode in lamina-developed shale oil reservoirs under strong heterogeneous and strong fluid–solid coupling in Jiyang depression of China by Chunlei Yu, Shiming Zhang, Ting Chen, Zhigang Sun, Jiaxiang Xu

    Published 2025-01-01
    “…Based on online nuclear magnetic resonance (NMR), fluid migration in pores of different scales and laminae during the FSP was discovered. …”
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  17. 277

    Metabolic profile of blood serum in experimental arterial hypertension by A. A. Seryapina, A. A. Malyavko, Yu. K. Polityko, L. V. Yanshole, Yu. P. Tsentalovich, A. L. Markel

    Published 2023-09-01
    “…Using the method of nuclear magnetic resonance spectroscopy (NMR spectroscopy), 56 metabolites in blood serum samples were identified, 18 of which were shown to have significant interstrain differences in serum concentrations. …”
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  18. 278

    Multi-scale characterization of tight carbonate rocks based on digital cores by Changsheng Wang, Changsheng Wang, Lili Tian, Lili Tian, Chuanrui Sun, Chuanrui Sun, Yuwei Deng, Yuwei Deng, Ying Zhou, Ying Zhou, Xin Nie, Xin Nie

    Published 2025-01-01
    “…However, due to the complexity and heterogeneity of the pore structure of tight carbonate rocks, high-pressure mercury intrusion, nuclear magnetic resonance (NMR) and other methods have different limitations in the characterization. …”
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  19. 279

    Effect of Constraint-Induced Movement Therapy on Motor Function of Rats with Cerebral Ischemia-Reperfusion Injury Based on Magnetic Resonance Spectroscopy Imaging by JIANG Pingli, CHEN Xiaocheng, XU Wenshan, DING Yanyi, LIU Weilin, TAO Jing

    Published 2023-04-01
    “…Before and after CIMT intervention, the open field test was used to evaluate the motor function; the modified neurological severity score (mNSS) was used to evaluate the neurological deficits; 9.4 T small animal nuclear magnetic resonance (MRS) imaging was used to detect the changes of glutamate and γ-aminobutyric acid levels in the bilateral motor cortex of rats.Results① Open field test results:compared with the control group, the total distance of exercise in the CIMT group after intervention for two weeks was significantly increased, the difference was statistically significant (P<0.05). ② mNSS score results: compared with the control group, the mNSS score of the CIMT group after intervention for two weeks was significantly decreased, the difference was statistically significant (P<0.05). ③ Comparison of glutamate and γ-aminobutyric acid levels in the M1 area of the motor cortex: compared with before intervention, the ratio of glutamate/creatinine in the M1 area of the healthy side motor cortex was significantly decreased, and the glutamate/creatinine ratio in the M1 area of the affected side motor cortex of rats in the CIMT group was significantly increased, γ-aminobutyric acid/creatinine ratio was significantly was significantly decreased (P<0.05). …”
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  20. 280

    Structural Characterization of Foxtail Millet (<i>Setaria italica</i>) Polysaccharides and Evaluation of Its Antioxidant and Immunostimulatory Activities by Haiying Zhang, Chengyu Peng, Wei Zhang, Huatao Liu, Xiaodong Liu, Changqing Sun, Xiaoning Cao

    Published 2025-01-01
    “…The structural characterization results obtained from gas chromatography–mass spectrometer (GC–MS) and nuclear magnetic resonance spectroscopy (NMR) spectra suggest that FM-D1 primarily consists of a main chain linked by →4)-α-D-Glc<i>p</i>-(1→ and minor quantities of →4,6)-α-D-Glc<i>p</i>-(1→ to form the main chain, with branching mainly composed of α-D-Glc<i>p</i>-(1→ attached to the <i>O</i>-6 position of →4,6)-α-D-Glc<i>p</i>-(1→ sugar residues. …”
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