Showing 801 - 820 results of 1,810 for search '"Mass spectrometry"', query time: 0.12s Refine Results
  1. 801

    Distinct vaginal microbiome and metabolome profiles in women with preterm delivery following cervical cerclage by Jun Zhang, Li Li, Mengjun Zhang, Jiaoning Fang, Zhimin Xu, Yijing Zheng, Zhi Lin, Mian Pan

    Published 2025-02-01
    “…In addition, vaginal metabolomics-based liquid chromatography–Orbitrap–tandem mass spectrometry (LC-Orbitrap-MS/MS) found that the alteration in vaginal metabolites in pregnant women with PTB is involved in starch and sucrose metabolism; arginine and praline metabolism; galactose metabolism; purine metabolism; arginine metabolism; tryptophan metabolism and N-glycan biosynthesis; cysteine and methionine metabolism; taurine and hypotaurine metabolism; amino acid metabolism; propanoate metabolism; valine, leucine, and isoleucine biosynthesis; glycine, serine, and threonine metabolism; and steroid hormone biosynthesis. …”
    Get full text
    Article
  2. 802

    Efficacy of Household and Commercial Washing Agents in Removing the Pesticide Thiabendazole Residues from Fruits by Xinyi Du, Lauren Ho, Sisheng Li, Jeffery Doherty, Junghak Lee, John M. Clark, Lili He

    Published 2025-01-01
    “…Both protocols were effective across various fruits (apples, grapes, lemons, strawberries), validated by liquid chromatography–mass spectrometry (LC-MS/MS) analyses. However, safety concerns regarding the composition of Product 4 highlighted the benefits of homemade strategies. …”
    Get full text
    Article
  3. 803

    Determination of Tenacissoside G, Tenacissoside H, and Tenacissoside I in Rat Plasma by UPLC-MS/MS and Their Pharmacokinetics by Fan Chen, Yizhe Ma, Ying Cui, Wanhang Wang, Chenchen Mei, Jingjing Nie, Congcong Wen, Xiuwei Shen, Xuzhao Zhou

    Published 2023-01-01
    “…An ultra-performance liquid chromatography/tandem mass spectrometry (UPLC-MS/MS) method was developed for the determination of tenacissoside G, tenacissoside H, and tenacissoside I in rat plasma. …”
    Get full text
    Article
  4. 804

    Light Hydrocarbon Geochemistry: Insight into Mississippian Crude Oil Sources from the Anadarko Basin, Oklahoma, USA by Ibrahim Atwah, Stephen Sweet, John Pantano, Anthony Knap

    Published 2019-01-01
    “…A set of oil samples was examined for composition using high-performance gas-chromatography and mass-spectrometry techniques. The result shows a distinct geochemical fingerprint reflected in biomarkers such as the abundance of extended tricyclic terpanes, together with heptane star diagrams, and diamantane isomeric distributions. …”
    Get full text
    Article
  5. 805

    Production of clusters and thin films of nitrides, oxides and carbides by pulsed laser ablation and deposition by S. Orlando, A. Paladini, A. Santagata, V. Marotta, G. P. Parisi, M. Satta, D. Scuderi, D. Catone, A. Giardini, A. Mele

    Published 2004-01-01
    “…A short introduction on the principles of laser-matter interaction, material evaporation, plume formation, its reactivity with suitable gases and finally deposition are here illustrated. Experiments by mass spectrometry of formation of clusters, precursors of thin films and nanoparticles of oxides, nitrides and carbides by pulsed laser ablation (PLA) are reported. …”
    Get full text
    Article
  6. 806

    Interspecific and Intersexual Differences in the Chemical Composition of Floral Scent in Glochidion Species (Phyllanthaceae) in South China by Daihong Huang, Fuchen Shi, Minwei Chai, Ruili Li, Houhun Li

    Published 2015-01-01
    “…Floral volatiles of male and female flowers of five Glochidion species in south China were collected by dynamic headspace absorption technique and then were chemically analyzed by using gas chromatography-mass spectrometry. A total of 69 compounds were identified from floral scents of five investigated species. …”
    Get full text
    Article
  7. 807

    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. …”
    Get full text
    Article
  8. 808

    Transcriptome analysis reveals regulatory mechanism of methyl jasmonate-induced monoterpenoid biosynthesis in Mentha arvensis L. by Tingting Huang, Wenjin Men, Ariuntungalag Myanganbayar, Undarmaa Davaasambuu

    Published 2025-01-01
    “…Gas chromatography-mass spectrometry (GC-MS) analysis indicated that, in general, MJ treatment did not significantly alter the types or relative proportions of EO components of M. arvensis. …”
    Get full text
    Article
  9. 809

    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. …”
    Get full text
    Article
  10. 810

    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. …”
    Get full text
    Article
  11. 811

    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.…”
    Get full text
    Article
  12. 812

    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. …”
    Get full text
    Article
  13. 813

    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. …”
    Get full text
    Article
  14. 814

    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. …”
    Get full text
    Article
  15. 815

    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. …”
    Get full text
    Article
  16. 816

    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. …”
    Get full text
    Article
  17. 817

    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. …”
    Get full text
    Article
  18. 818

    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. …”
    Get full text
    Article
  19. 819

    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. …”
    Get full text
    Article
  20. 820

    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. …”
    Get full text
    Article