Showing 661 - 680 results of 1,443 for search '"mass spectrometry"', query time: 0.06s Refine Results
  1. 661

    Determination of the De Novo Minimum Selection Concentration of Trimethoprim In Vivo for <i>Escherichia coli</i> Using <i>Galleria mellonella:</i> A Pilot Study by Jaime Knox Macleod, Zina Gestels, Said Abdellati, Thibaut Vanbaelen, Chris Kenyon, Sheeba Santhini Manoharan-Basil

    Published 2024-12-01
    “…The emergence of trimethoprim resistance was determined by isolating the target bacteria on selective agar plates, followed by species confirmation using MALDI-TOF mass spectrometry. The minimum inhibitory concentration (MIC) was assessed via the E-test to determine <i>E. coli</i> susceptibility to trimethoprim. …”
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  2. 662

    Spectroscopic, DFT, anti-bacterial, and in-silico investigations of novel semicarbazone and thiosemicarbazone synthesised from asymmetrical chalcones by Nikita Sharma, Har Lal Singh

    Published 2025-04-01
    “…After that the synthesis compounds were investigated using elemental analysis, melting point, UV, IR, 1H-, 13C-NMR spectroscopy and mass spectrometry. Later, computational tools were utilised for evaluating pharmacological attributes such as bioavailability score, Lipinski rule, absorption, distribution, metabolism, excretion and toxicity. …”
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  3. 663

    Protective Effect of the Ethanol Extract from Hericium erinaceus Against Ethanol-Induced Gastric Ulcers by Guoying Lv, Xiaoya Song, Zuofang Zhang

    Published 2021-09-01
    “…Ultra-high performance liquid chromatography-triple quadrupole-time of flight tandem mass spectrometry (UPLC-Triple-TOF-MS) analysis was used to identify the possible compounds present in EEH. …”
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  4. 664

    Metal-oxide phase transition of platinum nanocatalyst below fuel cell open-circuit voltage by Carlos A. Campos-Roldán, Amir Gasmi, Meryem Ennaji, Morgane Stodel, Isaac Martens, Jean-Sébastien Filhol, Pierre-Yves Blanchard, Sara Cavaliere, Deborah Jones, Jakub Drnec, Raphaël Chattot

    Published 2025-01-01
    “…Such phase transition is shown to impact PEMFC performance and its role on Pt transient dissolution is verified by electrochemical on-line inductively coupled plasma mass spectrometry. By further demonstrating and resolving the limitations of currently employed accelerated stress test protocols in the light of metal-oxide phase transitions kinetics, this picture of Pt oxidation enables new mitigation strategies against PEMFC degradation.…”
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  5. 665

    Temporomandibular Disorders Related to Stress and HPA-Axis Regulation by Kordian Staniszewski, Henning Lygre, Ersilia Bifulco, Siv Kvinnsland, Lisa Willassen, Espen Helgeland, Trond Berge, Annika Rosén

    Published 2018-01-01
    “…To assess if the hypothalamic-pituitary-adrenal (HPA) axis is upregulated in TMD patients, we performed a cross-sectional study with saliva from 44 TMD patients and 44 healthy sex- and age-matched controls for cortisol (F) and cortisone (E) with liquid chromatography-tandem mass spectrometry. Furthermore, we calculated the F/E ratio for the evaluation of 11β-hydroxysteroid dehydrogenase activity. …”
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  6. 666

    Characterization of IXINITY® (Trenonacog Alfa), a Recombinant Factor IX with Primary Sequence Corresponding to the Threonine-148 Polymorph by Dougald M. Monroe, Richard J. Jenny, Kevin E. Van Cott, Shelly Buhay, Laura L. Saward

    Published 2016-01-01
    “…Chromatographic and mass spectrometry techniques were used to identify and quantify posttranslational modifications. …”
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    Article
  7. 667

    A Promising Material by Using Residue Waste from Bisphenol A Manufacturing to Prepare Fluid-Loss-Control Additive in Oil Well Drilling Fluid by Zhi-Lei Zhang, Feng-Shan Zhou, Yi-He Zhang, Hong-Wei Huang, Ji-Wu Shang, Li Yu, Hong-Zhen Wang, Wang-Shu Tong

    Published 2013-01-01
    “…Fourier transform infrared (FTIR) spectroscopy, gas chromatography-mass spectrometry (GC-MS), and nuclear magnetic resonance (NMR) were used to characterize the residues. …”
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  8. 668

    Comparative Study of Heavy Metal Concentration in Eggs Originating from Industrial Poultry Farms and Free-Range Hens in Kosovo by H. Aliu, S. Dizman, A. Sinani, G. Hodolli

    Published 2021-01-01
    “…The measurements of the heavy metals were taken by inductively coupled plasma mass spectrometry (ICP-MS), using a wide range of elements, and only the most important elements were reported, such as Cr, Mn, Fe, Ni, Cu, Zn, As, Cd, Hg, and Pb within the range of 0.48–8.45, 38.77–289, 4286.59–15383.74, 0.45–144.74, 61.68–550.59, 1078.04–11378.56, 0.29–35.42, 0.27–6.54, and 0.04–1.41 μg kg−1, respectively. …”
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  9. 669

    Determination of Tropifexor in Beagle Dog Plasma by UPLC-MS/MS and Its Application in Pharmacokinetics by Yan-Ding Su, Xin-Yi Wei, Xiao-Hang Su, Ghulam Woshur, Xiao-Nan Geng, Xiang-Jun Qiu

    Published 2022-01-01
    “…The primary objective of this study was to develop and validate an efficient and accurate ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) approach as a means to detect tropifexor plasma concentrations in beagle dogs and to study its pharmacokinetic profile in beagle dogs. …”
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  10. 670

    The coordination complex formed by oxalic acid and chromate and the mechanism for enhanced photoreduction of Cr(Ⅵ) under visible-light irradiation by GUAN Yingying, WANG Hao, GE Xiaoming, DENG Likai, DENG Bin, MU Yi*, ZOU Jianping*

    Published 2024-02-01
    “…In this study, isothermal titration calorimetry (ITC), theoretical calculations, and electrospray ionization high resolution mass spectrometry (ESI-HRMS) analysis revealed that oxalic acid could complex with chromate to form a Cr(Ⅵ)-oxalate complex via an esterification process at pH≤4. …”
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  11. 671

    Flavonoids in Juglans regia L. Leaves and Evaluation of In Vitro Antioxidant Activity via Intracellular and Chemical Methods by Ming-Hui Zhao, Zi-Tao Jiang, Tao Liu, Rong Li

    Published 2014-01-01
    “…Herein, qualitative and quantitative determination of flavonoids from J. regia leaves was carried out using high performance liquid chromatography coupled with tandem mass spectrometry with electrospray ionization and negative ion detection (HPLC-ESI-MS/MS) by comparison of the retention times and mass spectral fragments with standard substances or related literatures. …”
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  12. 672

    Effects of Borneol on Pharmacokinetics and Tissue Distribution of Notoginsenoside R1 and Ginsenosides Rg1 and Re in Panax notoginseng in Rabbits by Shixiang Wang, Weijin Zang, Xinfeng Zhao, Weiyi Feng, Ming Zhao, Xi He, Qinshe Liu, Xiaohui Zheng

    Published 2013-01-01
    “…Reversed phase high-performance liquid chromatography coupled with electrospray ion trap mass spectrometry was employed to determine the concentrations of the three compounds in rabbit plasma. …”
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  13. 673

    The Effect of Supplementing Mushroom Growing Substrates on the Bioactive Compounds, Antimicrobial Activity, and Antioxidant Activity of Pleurotus ostreatus by Senzosenkosi Surprise Mkhize, Mthokozisi Blessing Cedric Simelane, Ishmael Nkoana Mongalo, Ofentse Jacob Pooe

    Published 2022-01-01
    “…The mushroom extracts were screened for bioactive compounds using gas chromatography-mass spectrometry (GC-MS). Antimicrobial activity was carried out using microplate assay, while antioxidant potential was investigated using reducing power assay. …”
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  14. 674

    Immunomodulatory Effect of Flavonoids of Blueberry (Vaccinium corymbosum L.) Leaves via the NF-κB Signal Pathway in LPS-Stimulated RAW 264.7 Cells by Dazhi Shi, Mengyi Xu, Mengyue Ren, Enshan Pan, Chaohua Luo, Wei Zhang, Qingfa Tang

    Published 2017-01-01
    “…The flavonoids of blueberry leaves were prepared with 70% ethanol and were identified by ultraperformance liquid chromatography/quadrupole-time-of-flight mass spectrometry (UPLC/Q-Tof-MS). The immunoregulatory effect and possible regulatory mechanisms of FBL were investigated in lipopolysaccharide- (LPS-) induced RAW 264.7 cells. …”
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  15. 675

    Synthesis and Spectroscopic Characterization of Some New Axially Ligated Indium(III) Macrocyclic Complexes and Their Biological Activities by Gauri D. Bajju, Altaf Ahmed, Deepmala Gupta, Ashu Kapahi, Gita Devi

    Published 2014-01-01
    “…These derivatives were characterized on the basis of mass spectrometry, 1H-NMR, IR, and UV-visible data. The separation and isolation of these derivatives have been achieved through chromatography. …”
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  16. 676

    Casein Kinases 2-dependent phosphorylation of the placental ligand VAR2CSA regulates Plasmodium falciparum-infected erythrocytes cytoadhesion. by Dominique Dorin-Semblat, Jean-Philippe Semblat, Romain Hamelin, Anand Srivastava, Marilou Tetard, Graziella Matesic, Christian Doerig, Benoit Gamain

    Published 2025-01-01
    “…We notably show that both CK2α can phosphorylate the extracellular region of recombinant and immunoprecipitated VAR2CSA. Mass spectrometry analysis of recombinant VAR2CSA phosphorylated by recombinant Human and P. falciparum CK2α combined with site-directed mutagenesis led to the identification of residue S1068 in VAR2CSA, which is phosphorylated by both enzymes and is associated with CSA binding. …”
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  17. 677

    Dissipation and Residue Level of Thifluzamide in Rice Field Ecosystem by Weitao Chen, Minghui Li, Wenxi Li, Xuemin Wu, Lijun Han

    Published 2015-01-01
    “…An efficient modified QuEChERS method combined with high performance liquid chromatography-tandem mass spectrometry detection (HPLC-MS/MS) was established and evaluated for the residue analysis of thifluzamide in rice grain, husk, straw, seedling, paddy water, and soil. …”
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  18. 678

    Oxidation state of bioavailable dissolved organic matter influences bacterioplankton respiration and growth efficiency by Brandon M. Stephens, Paolo Stincone, Daniel Petras, Chance J. English, Keri Opalk, Stephen Giovannoni, Craig A. Carlson

    Published 2025-01-01
    “…., more oxidized DOM), as detected by liquid chromatography-tandem mass spectrometry, coincided with increased hydrolyzable amino acid removal, increased ARQs and bacterioplankton respiration (BR), and a decreased bacterioplankton growth efficiency (BGE). …”
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  19. 679

    The Effect of Aromatherapy with Lavender Oil on the Health-Related Quality of Life in Patients with Fibromyalgia by Gulsah Yasa Ozturk, Ibrahim Bashan

    Published 2021-01-01
    “…In addition, the chromatographic analysis of lavender oil was performed with the combined headspace solid-phase microextraction and gas chromatography-mass spectrometry methods. When the quality of life scores were evaluated at baseline and after four weeks of lavender oil treatment, improvements were detected in all the subscales of SF-36 at the end of the study. …”
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  20. 680

    Efficient reduction of β-lactoglobulin allergenicity in milk using Clostridium tyrobutyricum Z816 by Qianru Zhao, Yuwei Wang, Zhengming Zhu, Quanyu Zhao, Liying Zhu, Ling Jiang

    Published 2023-05-01
    “…The hydrolyzed peptides were identified by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and analyzed by molecular modeling, which indicated that C. tyrobutyricum Z816 could effectively degrade the antigenic epitopes of β-LG. …”
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    Article