Showing 481 - 500 results of 1,810 for search '"Mass spectrometry"', query time: 0.09s Refine Results
  1. 481
  2. 482

    Assessment of Microbiological Indoor Air Quality in Cattle Breeding Farms by Justyna Szulc, Małgorzata Okrasa, Katarzyna Dybka-Stępień, Michael Sulyok, Adriana Nowak, Anna Otlewska, Bogumiła Szponar, Katarzyna Majchrzycka

    Published 2020-04-01
    “…Abstract This study, which was conducted on a farm in central Poland from February till April 2019, aimed to evaluate microbiological threats on cattle breeding premises by counting and identifying the microorganisms (via culturing and high-throughput sequencing), assessing the endotoxin concentrations (via gas chromatography-mass spectrometry [GC-MS]) and analysing the secondary metabolites (including mycotoxins) in the air and sedimented dust (via liquid chromatography-tandem mass spectrometry [LC-MS/MS]) in six barns. …”
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  3. 483
  4. 484

    Chemical Identification and Antioxidant Screening of Bufei Yishen Formula using an Offline DPPH Ultrahigh-Performance Liquid Chromatography Q-Extractive Orbitrap MS/MS by Jinyan Wu, Bangrong Cai, Ang Zhang, Peng Zhao, Yan Du, Xuefang Liu, Di Zhao, Liu Yang, Xinguang Liu, Jiansheng Li

    Published 2022-01-01
    “…We developed an efficient ultrahigh-performance liquid chromatography Q-Extractive Orbitrap mass spectrometry method to identify the composition of BYF and determine its antioxidant profile through an offline screening strategy based on 1,1-diphenyl-2-trinitrophenylhydrazine (DPPH)-liquid chromatography-mass spectrometry. …”
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    Article
  5. 485

    Bioactivity and metabolic profiling of crude extracts from endophytic bacteria linked to Solanum mauritianum scope: Discovery of antibacterial and anticancer properties by Abraham Goodness Ogofure, Ezekiel Green

    Published 2025-01-01
    “…The comprehensive profiling and characterization of crude secondary metabolites were conducted using Liquid Chromatography-Quadrupole Time-of-Flight Mass Spectrometry (LC-QTOF-MS/MS) and Gas Chromatography-High Resolution Time-of-Flight Mass Spectrometry (GC-HRTOF-MS). …”
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    Article
  6. 486

    SYNTHESIS AND CHARACTERIZATION OF NEW POLYMERIC COATINGS FROM ANTHOCYANIN DYE AND STUDY BIOLOGICAL ACTIVITY by Mayson Thafir Hadi, Zainab A. Jabarah, Sana H. Awad

    Published 2025-01-01
    “…FT-IR spectroscopy and mass spectrometry (MS) were used to identify the active groups of the anthocyanin pigment, which were situated the functional groups of anthocyanin in contrast to crystalline compounds, X-ray diffraction (XRD) examination also revealed the production of irregularly constituted compounds. …”
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    Article
  7. 487

    Characterization and Assessment of Flavor Compounds and Some Allergens in Three Iranian Rice Cultivars during Gelatinization Process by HS-SPME/GC-MS by M. H. Givianrad

    Published 2012-01-01
    “…A combined gas chromatography mass spectrometry with headspace solid-phase microextraction method has been utilized for the analysis of the flavor volatiles of three different rice cultivars including two modified Iranian rice cultivars and Hashemi rice cultivar during gelatinization. …”
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  8. 488
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  10. 490

    Selection of an optimal method for screening the collection of narrow-leaved lupine held by the Vavilov Institute for the qualitative and quantitative composition of seed alkaloids by A. V. Kushnareva, Т. V. Shelengа, I. N. Perchuk, G. P. Egorova, L. L. Malyshev, Yu. A. Kerv, A. L. Shavarda, M. A. Vishnyakova

    Published 2020-12-01
    “…Qualitative and quantitative indices were compared when target compounds had been extracted with multicomponent mixtures and individual reagents (chloroform, methanol, etc.) and the extracts analyzed using gas chromatography-mass spectrometry. High-performance liquid chromatography combined with mass spectrometry was also employed. …”
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    Article
  11. 491
  12. 492

    Putative Identification of 47 Compounds from Jieyu Anshen Granule and Proposal of Pharmacopeia Quality‐Assessment Strategy Using TCM‐Specific Library with UHPLC‐Q‐Exactive‐Orbitrap... by Xican Li, Jingyuan Zeng, Rongxin Cai, Chunhou Li, Xiaoshan Chen, Ban Chen, Xiaojun Zhao, Sunbal Khan

    Published 2025-01-01
    “…This study established a traditional Chinese herbal medicine‐specific library using emerging ultra‐high‐performance liquid chromatography‐quadrupole‐orbitrap‐tandem mass spectrometry analysis. Through library comparison, the study has fulfilled isomers distinction. …”
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    Article
  13. 493

    Spectrum-effect relationship of immunologic activity of Ganoderma lucidum by UPLC-MS/MS and component knock-out method by Changqin Li, Yiping Cui, Jie Lu, Lijun Meng, Changyang Ma, Zhenhua Liu, Yan Zhang, Wenyi Kang

    Published 2021-05-01
    “…Then the target compounds were identified by high resolution mass spectrometry. The results indicated that there are both enhanced immunity and immunosuppressive components in G. lucidum. …”
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    Article
  14. 494

    Determination of Organophosphorus Esters in Fall Protection Equipment by Accelerated Solvent Extraction and Solid-Phase Extraction Coupled with LC-MS/MS Detection by Haihong Li, Mingli Ye, Fangfang Wu, Xuyang Zhao, Lifeng Wang, Yili Wei, Shengyi Xie, Hairong Cui

    Published 2021-01-01
    “…A HILIC column was used to separate the OPEs using an acetonitrile/water mixture as the mobile phase with the detection by the electrospray ionization mass spectrometry, which was operated under the positive mode. …”
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  15. 495
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    Synthesis, Characterization, and Catalytic Studies of Mn(III)-Schiff Base-Dicyanamide Complexes: Checking the Rhombicity Effect in Peroxidase Studies by Manuel R. Bermejo, Rocío Carballido, M. Isabel Fernández-García, Ana M. González-Noya, Gustavo González-Riopedre, Marcelino Maneiro, Laura Rodríguez-Silva

    Published 2017-01-01
    “…The complexes 1–3 have been physicochemically characterized by elemental analysis, IR and paramagnetic 1H NMR spectroscopy, ESI mass spectrometry, magnetic moment at room temperature and conductivity measurements. …”
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  17. 497

    Simultaneous Determination of Multiple Active Components from Bushen Pills and Application in a Pharmacokinetic Study in Rats by Houli Li, Benjie Wang, Guiyan Yuan, Xiaoyan Liu, Jing Huang, Lilong Xiong, Di Zhang, Weiyi Feng, Ruichen Guo

    Published 2020-01-01
    “…Two chromatographic methods, liquid chromatography-mass spectrometry (LC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS), were applied to analyze the multiple active components of BSPs in dosage form for quality evaluation and in rat plasma for pharmacokinetics study, respectively. …”
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  18. 498

    Metabolite profiling in assessing ulcerative colitis activity: A systematic review by Danyang Cui, Xu Han, Jiazhu Jin, Yanhong Wang, Zijia Chen, Yang Gong, Miao Jiang

    Published 2025-03-01
    “…Qualitative analysis was performed according to the classification of gas chromatography/mass spectrometry, liquid chromatography/mass spectrometry, or nuclear magnetic resonance. …”
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  19. 499
  20. 500

    Diagnosis of Parasitic Diseases: Old and New Approaches by Momar Ndao

    Published 2009-01-01
    “…These include immunoassays, molecular-based approaches, and proteomics using mass spectrometry platforms technology. This review summarizes the progress in new approaches in parasite diagnosis and discusses some of the merits and disadvantages of these tests.…”
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