Showing 161 - 180 results of 487 for search '"Ionization"', query time: 0.05s Refine Results
  1. 161

    Determination of Senegenin and Tenuifolin in Mouse Blood by Ultra-High Performance Liquid Chromatography-Tandem Mass Spectrometry and Their Pharmacokinetics by Xiuwei Shen, Xiangyi Dai, Yifan He, Congcong Wen, Qingwei Zhang

    Published 2022-01-01
    “…Quantitative analysis was performed using electrospray ionization (ESI) with multiple reaction monitoring (MRM) in negative ion mode. …”
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    Article
  2. 162

    Similar Strains of Coagulase-Negative Staphylococci Found in the Gastrointestinal Tract and Bloodstream of Bacteremic Neonates by Jennifer O. Adeghate, Emese Juhász, Miklós Á. Iván, Júlia Pongrácz, Katalin Kristóf

    Published 2020-01-01
    “…CoNS strains isolated from blood cultures and perianal and pharyngeal swab samples of neonates from two neonatal intensive care units were investigated using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and pulsed-field gel electrophoresis. …”
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  3. 163

    Trends towards Effective Analysis of Fluorinated Compounds Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Ruth Lorivi Moirana, Thomas Kivevele, Josephine Mkunda, Kelvin Mtei, Revocatus Machunda

    Published 2021-01-01
    “…However, direct determination of fluorine using this technique is challenged by high ionization potential of fluorine together with spectral and nonspectral interferences which affect the quality of results. …”
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    Article
  4. 164

    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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  5. 165

    Dynamic Metabolic Footprinting Reveals the Key Components of Metabolic Network in Yeast Saccharomyces cerevisiae by Pramote Chumnanpuen, Michael Adsetts Edberg Hansen, Jørn Smedsgaard, Jens Nielsen

    Published 2014-01-01
    “…Both positive and negative electrospray ionization (ESI) modes were performed to obtain the complete information about the metabolite content. …”
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    Article
  6. 166

    Direct Analysis in Real Time by Mass Spectrometric Technique for Determining the Variation in Metabolite Profiles of Cinnamomum tamala Nees and Eberm Genotypes by Vineeta Singh, Atul Kumar Gupta, S. P. Singh, Anil Kumar

    Published 2012-01-01
    “…To characterize diversity in terms of metabolite profiles of Cinnamomum tamala Nees and Eberm genotypes, a newly emerging mass spectral ionization technique direct time in real time (DART) is very helpful. …”
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    Article
  7. 167

    Rethinking gold(II) porphyrins: an inherent wave distortion by Ghosh, Abhik, Conradie, Jeanet

    Published 2024-01-01
    “…Relativistic DFT (OLYP-D3/ZORA-STO-TZ2P) calculations predict low adiabatic ionization potentials for gold(II) porphyrins, from 4.60 eV for Au[TPP] (TPP $=$ tetraphenylporphyrin) to 5.34 eV for Au[TPFPP] [TPFPP $=$ tetrakis(pentafluorophenyl)porphyrin]. …”
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  8. 168

    Assessing the Ecological Risk of Polycyclic Aromatic Hydrocarbons in Sediments at Langkawi Island, Malaysia by Essam Nasher, Lee Yook Heng, Zuriati Zakaria, Salmijah Surif

    Published 2013-01-01
    “…A gas chromatography/flame ionization detector (GC/FID) was used to analyse the 18 PAHs. …”
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  9. 169

    Petroleum Hydrocarbon Fingerprints of Water and Sediment Samples of Buffalo River Estuary in the Eastern Cape Province, South Africa by A. O. Adeniji, O. O. Okoh, A. I. Okoh

    Published 2017-01-01
    “…The extracts were subsequently analyzed by gas chromatography-flame ionization detection. Results showed that total petroleum hydrocarbon (TPH) varied from 7.65 to 477 μg/L in the water and 12.59 to 1,100 mg/kg in the sediments, with mean values of 146.50 ± 27.96 μg/L and 209.81 ± 63.82 mg/kg, respectively. …”
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  10. 170

    Rapid, Validated UPLC-MS/MS Method for Determination of Glibenclamide in Rat Plasma by Mohd Aftab Alam, Fahad Ibrahim Al-Jenoobi, Abdullah Mohammed Al-Mohizea

    Published 2018-01-01
    “…The mass spectrometer (triple-quadrupole) was operated in positive electrospray ionization mode. Sodium adducts [M + Na]+ of glibenclamide and IS were monitored in MRM mode. …”
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  11. 171

    The influence of the conduction band of BaCl2 on the thermal quenching of the Tm2+ 4f125d1→4f13 and 4f13→4f13 luminescence in orthorhombic BaCl2:Tm2+/3+ by M.P. Plokker, H.T. Hintzen

    Published 2025-02-01
    “…Room temperature photo-excitation into this level will then most likely result in thermal ionization effects that have an impact on the Tm2+ 4f125d1→4f13 and 4f13→4f13 luminescence and corresponding quantum yield.…”
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  12. 172

    Influence of Acute High Glucose on Protein Abundance Changes in Murine Glomerular Mesangial Cells by Michelle T. Barati, James C. Gould, Sarah A. Salyer, Susan Isaacs, Daniel W. Wilkey, Michael L. Merchant

    Published 2016-01-01
    “…Two-dimensional gel electrophoresis and matrix assisted laser desorption ionization time of flight mass spectrometry methods were used to identify protein expression patterns in immortalized rat mesangial cells altered by 2 h high glucose (HG) growth conditions as compared to isoosmotic/normal glucose control (NG⁎) conditions. …”
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  13. 173

    Direct Analysis in Real Time Mass Spectrometry for the Nondestructive Investigation of Conservation Treatments of Cultural Heritage by Marcello Manfredi, Elisa Robotti, Greg Bearman, Fenella France, Elettra Barberis, Pnina Shor, Emilio Marengo

    Published 2016-01-01
    “…We describe here the preliminary results on a quick and direct method for the nondestructive identification of the various interventions of parchment by means of direct analysis in real time (DART) ionization and high-resolution time-of-flight mass spectrometry and chemometrics. …”
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  14. 174

    Quantitation of α-Lactalbumin by Liquid Chromatography Tandem Mass Spectrometry in Medicinal Adjuvant Lactose by Rui Yan, Longmei Qu, Nan Luo, Yang Liu, Yu Liu, Li Li, Lijiang Chen

    Published 2014-01-01
    “…Mass spectrometric detection was achieved by a triple-quadrupole mass spectrometer equipped with an ESI interface operating in positive ionization mode. Quantitation was performed using selected ion monitoring of m/z 2364 for α-La. …”
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  15. 175

    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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  16. 176

    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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  17. 177

    Microscopic Mechanism of the Interaction in the Adsorption of Caramel Pigments onto Rosin-Based Decolorizing Resin for Sugar by WEI Yanhong, WANG Jiaxin, JIAO Li, LIAO Chunyu, LEI Fuhou, LI Wen

    Published 2024-12-01
    “…The focus was on the multidimensional visualization of the micro-mechanism of the interaction in the adsorption of caramels by the rosin-based resin at the molecular, atomic, and electronic levels on the basis of quantum chemical theoretical calculations (including electrostatic potential, electrostatic potential interaction, average local ionization energy, frontier molecular orbitals, independent gradient model, and Hirshfeld surface analyses). …”
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  18. 178

    Attosecond metrology of vacuum-ultraviolet high-order harmonics generated in semiconductors via laser-dressed photoionization of alkali metals by Arjun Nayak, Debobrata Rajak, Balázs Farkas, Camilio Granados, Philipp Stammer, Javier Rivera-Dean, Theocharis Lamprou, Katalin Varju, Yann Mairesse, Marcelo F. Ciappina, Maciej Lewenstein, Paraskevas Tzallas

    Published 2025-02-01
    “…This source opens new spectral windows for attosecond spectroscopy, enabling studies of bound-state dynamics in natural systems with low ionization energies, while facilitating the generation of non-classical entangled light states in the visible-VUV.…”
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  19. 179

    Optimization of Extraction Conditions for Determination of Tiliroside in Tilia L. Flowers Using an LC-ESI-MS/MS Method by Aleksandra Pieczykolan, Wioleta Pietrzak, Renata Nowak, Józefina Pielczyk, Karolina Łamacz

    Published 2019-01-01
    “…A new, rapid, simple, sensitive, and selective liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) method was developed to determine the content of tiliroside in Tilia L. flowers. …”
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    Article
  20. 180

    A CDFT-Based Computational Peptidology (CDFT-CP) Study of the Chemical Reactivity and Bioactivity of the Marine-Derived Alternaramide Cyclopentadepsipeptide by Norma Flores-Holguín, Juan Frau, Daniel Glossman-Mitnik

    Published 2021-01-01
    “…The results represent a new confirmation of the superiority of the MN12SX density functional in the fulfilment of the Janak and ionization energy theorems through the proposed KID procedure. …”
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