Showing 381 - 400 results of 660 for search '"Ionization"', query time: 0.05s Refine Results
  1. 381

    Portulaca oleracea L. (purslane) extract ameliorates intestinal inflammation in diet-induced obese mice by inhibiting the TLR4/NF-κB signaling pathway by Lingchao Miao, Meng Sam Cheong, Haolin Zhang, Haroon Khan, Haroon Khan, Hongxun Tao, Yuxiao Wang, Wai San Cheang

    Published 2025-01-01
    “…Pro-inflammatory cytokines were determined using ELISA kits, whereas the components of purslane extract were detected by ultra performance liquid chromatography/electrospray ionization quadrupole time-of-flight mass spectrometry. …”
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  2. 382
  3. 383

    Effects of helium irradiation damage on deuterium plasma-driven permeation through tungsten coated RAFM steel by Yue Xu, Xiao-Ping Tian, Hong-Yan Tan, Hai-Ying Fu, Jun-Jie Ni, Lai-Ma Luo, Yu-Cheng Wu

    Published 2025-01-01
    “…The results indicated that the presence of He reduced the ionization rate of the D plasma and decreased D-PDP flux. …”
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  4. 384

    The Northern and Southern Hemispheric Asymmetries of Mesospheric Ozone at High Latitudes During the January 2012 Solar Proton Events by Shiping Xiong, Jingyuan Li, Guanchun Wei, Jianyong Lu, Yufeng Tian, Xiaoping Zhang, Shuai Fu, Meng Sun, Zheng Li, Hua Zhang, Jingqi Cui, Shuwen Jiang, Chaolei Yang

    Published 2023-05-01
    “…The mesospheric ozone at high latitudes decreased evidently with the increasing proton flux and ionization rates during SPEs. The results of SABER and WACCM‐X both showed that maximum mesospheric ozone depletion reached 100% in the North Hemispheric (NH) high latitudes during SPEs while only 40% in the South Hemispheric (SH) high latitudes. …”
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    Article
  5. 385

    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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    Article
  6. 386

    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
    “…Three active constituents of BSPs, including paeoniflorin (PF), berberine hydrochloride (BBR), and schizandrin (SCH), were simultaneously determined by the established LC-MS method with electrospray ionization (ESI) in positive selected ion monitoring (SIM) mode at m/z 503.1, 336.0, and 455.2. …”
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  7. 387

    Photosynthetic Pigments with Potential for a Photosynthetic Antenna: A DFT Analysis by Jesús Francisco Monzón-Bensojo, Manuel A. Flores-Hidalgo, Diana Barraza-Jiménez

    Published 2019-01-01
    “…The evaluated electronic properties at the gas phase included (a) energies such as HOMO-LUMO band gap (H-L, ranging from 2.168 to 2.504 eV), adiabatic ionization potential (I, ranging from 5.964 to 7.207 eV), and adiabatic electronic affinity (A, ranging from 2.176 to 2.741 eV); (b) global chemical reactivity indexes such as electronegativity (χ, ranging from 4.121 to 4.974 eV), hardness (η, ranging from 1.812 to 2.233 eV), electrophilicity index (ω, ranging from 4.365 to 5.541 eV), and electroaccepting-electrodonating powers (ω+, ranging from 1.671 to 2.115 eV, and ω−, ranging from 4.375 to 5.273 eV); (c) electron-hole reorganization energies (λ, ranging from 0.225 to 0.519 eV and ranging from 0.168 to 0.425 eV, respectively) and electron-hole extraction potentials (EEP, ranging from 2.570 to 2.966 eV, and HEP, ranging from 5.538 to 7.012 eV, respectively); and (d) local chemical reactivity indexes like condensed Fukui functions (fk), condensed dual descriptor (f2r), and condensed local softness (sk). …”
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    Article
  8. 388

    Phytochemicals of Vitis vinifera L. var. King Ruby protect mice from benzo(a)pyrene-induced lung injury by Gehad S. Ahmedy, Hend M. Selim, Mona El-Aasr, Souzan M. Ibrahim, Suzy A. El-Sherbeni

    Published 2025-02-01
    “…King Ruby leaves methanol extract (VLME) was tentatively recognized by liquid chromatography electrospray ionization tandem mass spectrometric (LC-ESI-MS/MS). …”
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    Article
  9. 389

    Epsilon Canis Majoris: The Brightest Extreme-ultraviolet Source with Surprisingly Low Interstellar Absorption by J. Michael Shull, Rachel M. Curran, Michael W. Topping

    Published 2025-01-01
    “…The photoionization rate Γ _H ≈ (1–2) × 10 ^−14 s ^−1 at the cloud surface produces an ionization fraction (30%–40%) for total hydrogen density n _H = 0.2 cm ^−3 . …”
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  10. 390

    Elevation of ganglioside degradation pathway drives GM2 and GM3 within amyloid plaques in a transgenic mouse model of Alzheimer's disease by Wenxuan Wang, Sarah J. Myers, Nikita Ollen-Bittle, Shawn N. Whitehead

    Published 2025-02-01
    “…To address this gap, matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) was employed to investigate the age-dependent expression profiles of the A-series ganglioside species GD1a, GM1, GM2, and GM3 in the APP/PS1 transgenic mouse model of AD in which age-dependent amyloid-beta (Aβ) plaques develop. …”
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    Article
  11. 391

    Biocontrol Potential of Rhizospheric Bacillus Strains Against <i>Sclerotinia minor</i> Jagger Causing Lettuce Drop by Lihui Xu, Qinghua Shang, Mogens Nicolaisen, Rong Zeng, Shigang Gao, Ping Gao, Zhiwei Song, Fuming Dai, Jingze Zhang

    Published 2025-01-01
    “…Lipopeptide compounds produced by each strain were identified using matrix-assisted laser desorption ionization–time of flight mass spectrometry (MALDI–TOF MS) analysis. …”
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    Article
  12. 392

    Distribution and Antifungal Susceptibility Profile of Oropharyngeal Candida Species Isolated from People Living with HIV in the Era of Universal Test and Treat Policy in Uganda. by Musinguzi, Benson, Turyamuhika, Laban, Mwesigwa, Alex, Nalumaga, Pauline Petra, Kabajulizi, Immaculate, Njovu, Israel Kiiza, Mwebesa, Edson, Luggya, Tonny, Ocheng, Francis, Kateete, David Patrick, Itabangi, Herbert, Mboowa, Gerald, Obondo, James Sande, Achan, Beatrice

    Published 2024
    “…Oropharyngeal swabs were collected and cultured on Sabouraud Dextrose agar to isolate Candida species identified using the matrix-assisted laser desorption ionization-time of flight mass spectrometry. Additionally, the antifungal susceptibility profile of Candida isolates to six antifungal drugs was determined using the VITEK® (Marcy-l’Étoile, France) compact system. …”
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    Article
  13. 393

    SiC free-standing membrane for X-ray intensity monitoring in synchrotron radiation beamlines by Gabriele Trovato, Marzio De Napoli, Christian Gollwitzer, Simone Finizio, Michael Krumrey, Francesco La Via, Luca Lanzanò, Giuliana Milluzzo, Samuele Moscato, Matthias Müller, Francesco Romano, Dario Ferreira Sanchez, Massimo Camarda

    Published 2025-01-01
    “…Traditional transmission-mode monitors included metal mesh foils and ionization chambers, which suffered from low signal stability and size constraints. …”
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    Article
  14. 394

    Mass Fragmentation Characteristics of t-Boc Substituted Drug Precursors by Cui-mei LIU, Xue-yan LIU, Zhen-dong HUA, Hao TANG, Yu DU, Wei JIA

    Published 2025-01-01
    “…After analyzing the characteristic fragment ions under electron impact (EI) mode and electrospray ionization collision-induced dissociation (ESI-CID) mode, the possible fragmentation pathways of t-Boc substituted drug precursors were deduced. …”
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  15. 395
  16. 396

    Ion suppression correction and normalization for non-targeted metabolomics by Iqbal Mahmud, Bo Wei, Lucas Veillon, Lin Tan, Sara Martinez, Bao Tran, Alexander Raskind, Felice de Jong, Yiwei Liu, Jibin Ding, Yun Xiong, Wai-kin Chan, Rehan Akbani, John N. Weinstein, Chris Beecher, Philip L. Lorenzi

    Published 2025-02-01
    “…We evaluate the method across ion chromatography (IC), hydrophilic interaction liquid chromatography (HILIC), and reversed-phase liquid chromatography (RPLC)-MS systems in both positive and negative ionization modes, with clean and unclean ion sources, and across different biological matrices. …”
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    Article
  17. 397

    Phytochemical and Biological Investigations of Crude Extracts of <i>Astragalus pisidicus</i> by Esra Aydemir, Elif Odabaş Köse, Serap Özkaya Gül, Alaaddin Korkut, A. Cansu Kilit, Mehmet Engin Celep, Mustafa Yavuz, R. Süleyman Göktürk, Cengiz Sarikurkcu

    Published 2024-12-01
    “…<b>Methods</b>: The water and methanolic fractions of four parts (stems, flowers, leaves, root) as well as the whole plant were quantified and identified by Liquid Chromatography Electrospray Ionization Tandem Mass Spectrometry (LC–ESI–MS/MS) analysis. …”
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    Article
  18. 398

    Anti-Inflammatory Activity of Diterpenoids from Celastrus orbiculatus in Lipopolysaccharide-Stimulated RAW264.7 Cells by Hyun-Jae Jang, Kang-Hoon Kim, Eun-Jae Park, Jeong A. Kang, Bong-Sik Yun, Seung-Jae Lee, Chan Sun Park, Soyoung Lee, Seung Woong Lee, Mun-Chual Rho

    Published 2020-01-01
    “…In this study, compounds 1–17, including undescribed podocarpane-type trinorditerpenoid (3), were purified from C. orbiculatus and their chemical structure were determined by high-resolution electrospray ionization mass (HRESIMS) and nuclear magnetic resonance (NMR) spectroscopic data. …”
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    Article
  19. 399

    Simultaneous Determination of Multiple Acid-Suppressing Drugs by UPLC-MS/MS Method and Application for Pharmacokinetics Study by Li X, Liu S, Yu M, Xi W, Wu X, Liu D, Liu A, Wang H

    Published 2025-02-01
    “…Detection was performed on a triple quadrupole tandem mass spectrometer with positive electrospray ionization. Chromatographic separation was achieved on the ACQUITY UPLC BEH C18 column (2.1 × 50 mm, 1.7 μm) using gradient elution. …”
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  20. 400

    UPLC-ESI-MS/MS Profile and Antioxidant, Cytotoxic, Antidiabetic, and Antiobesity Activities of the Aqueous Extracts of Three Different Hibiscus Species by Hanan M. Al-Yousef, Wafaa H. B. Hassan, Sahar Abdelaziz, Musarat Amina, Rasha Adel, May A. El-Sayed

    Published 2020-01-01
    “…This inspired the authors to investigate the phytochemicals of these extracts for the first time using UPLC-ESI-MS/MS in negative and positive ionization modes. The analysis afforded the tentative identification of 103 compounds including phenolic compounds, flavonoids, and anthocyanins. …”
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    Article