Showing 601 - 620 results of 1,443 for search '"mass spectrometry"', query time: 0.07s Refine Results
  1. 601

    Chemical composition and larvicidal activity of the essential oil of Tagetes minuta Linnaeus from the southern Brazilian highlands by Elisiane de Bona Sartor, Renan Reisdörfer Schorr, Fernando Cesar Martins Betim, Cintia Aparecida dos Anjos, Camila Freitas de Oliveira, Luciane Dalarmi, Deise Prehs Montrucchio, Josiane de Fátima Gaspari Dias, Obdulio Gomes Miguel, Marilis Dallarmi Miguel

    Published 2025-01-01
    “…The chemical composition was determined using gas chromatography coupled with mass spectrometry (GC-MS). The EO extraction yield was 4.9%, and the major compounds (Z)-tagetone, (Z)-β-ocimene, and dihydrotagetone were identified. …”
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  2. 602

    Synthesis Characterization and Biological Activities of Coordination Compounds of 4-Hydroxy-3-nitro-2H-chromen-2-one and Its Aminoethanoic Acid and Pyrrolidine-2-carboxylic Acid Mi... by Temitayo Aiyelabola, Ezekiel Akinkunmi, Efere Obuotor, Idowu Olawuni, David Isabirye, Johan Jordaan

    Published 2017-01-01
    “…The compounds formed were characterized using infrared, Uv-vis spectrophotometric analyses, mass spectrometry, magnetic susceptibility measurements, and EDX analyses. …”
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  3. 603

    Authentication of Processed Epimedii folium by EA-IRMS by Fengyan He, Mengyi Li, Yi He, Zhe Dong, Jin Cao, Zhong Dai, Shuangcheng Ma

    Published 2020-01-01
    “…Elemental analyzer coupled with isotopic ratio mass spectrometry (EA-IRMS) was applied to determine the δ13C values of the cyclohexane extracts of those samples. …”
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  4. 604

    Diagnosis of Methyl Malonicaciduria from 2013 to 2018 by Alina Concepción Álvarez, Ivette Camayd Viera, Norma Elena de León Ojeda, Alina García García, Laritza Martínez Rey, Daniel Quintana Hernández

    Published 2020-02-01
    “…The identification of methylmalonic acid was performed by gas chromatography / mass spectrometry, while the homocysteine quantification by high performance liquid chromatography. …”
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  5. 605

    Detection and Analytical Capabilities for Trace Level of Carbon in High-Purity Metals by Laser-Induced Breakdown Spectroscopy with a Frequency Quintupled 213 nm Nd:YAG Laser by Masaki Ohata, Toshiki Nakae

    Published 2017-01-01
    “…From these results, the frequency quintupled 213 nm Nd:YAG laser, which was adopted widely as a commercial laser ablation (LA) system coupled with inductively coupled plasma mass spectrometry (ICPMS) for trace element analysis in solid materials, could be used for C analysis to achieve simultaneous measurements for both C and trace elements in metals by LIBS and LA-ICPMS, respectively.…”
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  6. 606

    High Levels of Perfluorooctane Sulfonate in Children at the Onset of Diabetes by Barbara Predieri, Lorenzo Iughetti, Cristiana Guerranti, Patrizia Bruzzi, Guido Perra, Silvano E. Focardi

    Published 2015-01-01
    “…Perfluorinated compounds were measured using high performance liquid chromatography with electrospray ionization tandem mass spectrometry. Nonparametric statistical analysis was performed. …”
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  7. 607

    Pulse protein quality and derived bioactive peptides by Matthew G. Nosworthy, Matthew G. Nosworthy, Bianyun Yu, L. Irina Zaharia, Gerardo Medina, Nii Patterson

    Published 2025-02-01
    “…Additionally, the use of proteomics platforms, such as mass spectrometry, in combination with bioinformatics tools, enables the identification and characterization of bioactive peptides in pulse crops. …”
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    Article
  8. 608

    Low-temperature biodegradation of freshwater dissolved organic matter during winter-to-spring transition by Corentin Bouvet, Pascale B. Beauregard, Céline Guéguen

    Published 2025-02-01
    “…Despite limited degradation of colored and fluorescent DOM (CDOM and FDOM, respectively), 84% of the mass-to-charge (m/z) peaks detected using positive ion mass spectrometry were lost in winter DOM after 28-day incubation. …”
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    Article
  9. 609

    Characteristics and microscopic mechanisms of smoke emissions of OMMT/SBS-modified asphalt by Wanhong Yang, Zhenghao Zhang, Xiaolong Yang, Xiaofan Jia, Yixin Jiang

    Published 2025-01-01
    “…Pyrolysis gas chromatography–mass spectrometry (PY-GC–MS), fluorescence microscopy (FM), thermogravimetric analysis (TG), and gel permeation chromatography (GPC) were used to explore the characteristics and microscopic mechanisms of flue gas emissions. …”
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  10. 610

    Spectrophotometric Determination of Cr(III) and Pb(II) Using Their Complexes with 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene by Le Van Tan, Tran Quang Hieu, Nguyen Van Cuong

    Published 2015-01-01
    “…The results for several analyzed samples were found to be in satisfied agreement with those acquired by using the inductively coupled plasma mass spectrometry (ICP-MS) technique.…”
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  11. 611

    Metabolomic Analysis of the Chemical Composition of Chongjue Luohan Tea by QIAN Yuanfeng, YANG Gaozhong, XU Weilin, XU Guodong, DENG Huifang, LAN Bingying, LIN Zhi, LÜ Haipeng

    Published 2025-02-01
    “…To elucidate the chemical material basis of the flavor quality of Chongjue Luohan tea, four representative tea samples (Zifu, Ankang, Ping’an and Jufu teas) were analyzed by sensory evaluation and metabolomics based on ultra-high performance liquid chromatography-quadrupole-mass spectrometry (UPLC-Q-MS). The results showed that Luohan tea contained higher levels of tea polyphenols, ranging from 13.7% to 18.1%, than traditional black tea (9.6%). …”
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  12. 612

    Urinary bacteriophage cooperation with bacterial pathogens during human urinary tract infections supports lysogenic phage therapy by Mahmood Almosuli, Anna Kirtava, Archil Chkhotua, Lia Tsveniashvili, Nina Chanishvili, Sumaiya Safia Irfan, Emily Ng, Hope McIntyre, Adam J. Hockenberry, Robyn P. Araujo, Weidong Zhou, Ngoc Vuong, Barbara Birkaya, Lance Liotta, Alessandra Luchini

    Published 2025-02-01
    “…Using human urine, model organisms, mass spectrometry, gene expression analysis, and the phage phenotype prediction model BACPHLIP, the results corroborated our hypotheses at the functional protein and gene levels. …”
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    Article
  13. 613

    Direct detection and identification of viruses in saliva using a SpecID ionization modified mass spectrometer. by Pierre Alusta, Angel Paredes, Marli Azevedo, Lisa Mullis, Dan Buzatu

    Published 2025-01-01
    “…The main goal of this study was to demonstrate that our previously developed, portable, mass spectrometry based method, SpecID, could also be sued for detecting viruses in saliva, including but not limited to SARS-CoV-2; the SpecID method has the potential to provide a reliable solution that overcomes some of the challenges with molecular testing like PCR.…”
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  14. 614

    Molecular networking-assisted flavonoid profile of Gypsophila glomerata extract in relation to its protective effects on carbon tetrachloride-induced hepatorenal damage in rats by Dimitrova Bojana, Vitanska Rumyana, Gevrenova Reneta, Zheleva-Dimitrova Dimitrina, Balabanova Vessela, Stoev Stoycho

    Published 2022-03-01
    “…Twenty-two flavonoid C-, O- and C,O--glycosides in EGG were annotated by mass spectrometry--based molecular networking; nine of them are reported in this species for the first time. …”
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  15. 615

    Correlation of Volatile Compounds and Sensory Attributes of Chinese Traditional Sweet Fermented Flour Pastes Using Hierarchical Cluster Analysis and Partial Least Squares-Discrimin... by Meigui Huang, Yulin Li, Ping Zhan, Ping Liu, Honglei Tian, Jie Fan

    Published 2017-01-01
    “…Ninety-six volatile compounds were detected using solid-phase microextraction gas chromatography mass spectrometry. Hierarchical cluster analysis grouped SFFPs into three clusters according to their concentrations and compositions of volatile components. …”
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    Article
  16. 616

    LC-MS/MS Method for Determination of Hydroxychloroquine and Metabolites: Application in a Pharmacokinetic Study by Lili Cui, Zhipeng Wang, Shi Qiu, Mengwei Zhang, Yanping Liu, Fengjing Xu, Xinhua Song, Shouhong Gao, Wansheng Chen

    Published 2022-01-01
    “…We developed and validated a simple and sensitive ultrahigh performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method for simultaneous quantitation of HCQ and its three metabolites in rat blood, and reported their pharmacokinetic parameters. …”
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    Article
  17. 617

    Application of quantitative protein mass spectrometric data in the early predictive analysis of membrane-bound target engagement by monoclonal antibodies by Armin Sepp, Morris Muliaditan

    Published 2024-12-01
    “…In the case of monoclonal antibodies (mAbs) against cell membrane antigens, this requires quantitative insight into the target tissue concentration levels. Protein mass spectrometry data are often available but the values are expressed in relative, rather than in molar concentration units that are easier to incorporate into pharmacokinetic models. …”
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  18. 618
  19. 619

    Lipid Antigens: Revealing the Hidden Players in Adaptive Immune Responses by Tamana Eskandari, Yasamin Eivazzadeh, Fatemeh Khaleghinia, Fatemeh Kashi, Valentyn Oksenych, Dariush Haghmorad

    Published 2025-01-01
    “…Recent advances in mass spectrometry, imaging techniques, and lipidomics have revolutionized the identification and characterization of lipid antigens and enhanced our understanding of their structural diversity and functional significance. …”
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    Article
  20. 620

    The Pyrolytic Profile of Lyophilized and Deep-Frozen Compact Part of the Human Bone by Jolanta Lodowska, Daniel Wolny, Sławomir Kurkiewicz, Ludmiła Węglarz

    Published 2012-01-01
    “…Samples of preserved bone tissue were subjected to thermolysis and tetrahydroammonium-hydroxide- (TMAH-) associated thermochemolysis coupled with gas chromatography and mass spectrometry (Py-GC/MS). Results. Derivatives of benzene, pyridine, pyrrole, phenol, sulfur compounds, nitriles, saturated and unsaturated aliphatic hydrocarbons, and fatty acids (C12–C20) were identified in the pyrolytic pattern. …”
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    Article