Showing 741 - 760 results of 969 for search '"liquid chromatography"', query time: 0.08s Refine Results
  1. 741

    Development of the algal pigment-based salinity transfer function for lakes on the Tibetan Plateau and evaluation of the quantitative reconstruction by Xinyao Sun, Qi Lin, Chenliang Du, Shixin Huang, Ke Zhang, Ji Shen

    Published 2025-01-01
    “…Here, the relationship between water environmental variables and surface sediment pigment assemblage identified by high-performance liquid chromatography (HPLC) covering 95 Tibetan lake sampling sites was investigated based on multivariate statistical analysis. …”
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  2. 742

    Antioxidant Vitamins as Oxidative Stress Markers in Rat Plasma After Physical Exercise - a Short Report by Wawrzyniak Agata, Hamułka Jadwiga, Drywień Małgorzata, Górnicka Magdalena, Pierzynowska Jolanta, Wojtaś Malwina, Gajewska Małgorzata, Frąckiewicz Joanna, Gronowska-Senger Anna

    Published 2014-12-01
    “…Vitamins in rat plasma were assessed by the high-performance liquid chromatography (HPLC). Results suggest that vitamin E and C supplemented simultaneously may provide some benefit during physical exercise. …”
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  3. 743

    The concentration of selected organophosphorus pesticides associated with PM10 in agricultural ambient air in Iran: Health risk assessment using Monte Carlo simulation by Asma Tabanasl, Amin Mohammadpour, Aboozar Soltani, Mohammad Hoseini, Mohammadali Baghapour

    Published 2025-01-01
    “…Active sampling was conducted using a SKC pump with a selective air inlet, and the samples were analyzed via liquid chromatography-mass spectrometry. The results indicated that Diazinon exhibited the highest average concentration among PM10-bound organophosphate pesticides, measuring 4.23 ng/m³ in suburban areas and 2.51 ng/m³ in urban environments. …”
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  4. 744

    Betaxanthin Profiling in Beta vulgaris Leaves and Gymnocalycium mihanovichii Grafted Cacti: A Comprehensive Study by Aneta Spórna-Kucab, Anna Tekieli, Magdalena Knapek, Marta Zużałek, Sławomir Wybraniec

    Published 2023-12-01
    “…This study was focused on the identification and quantification of betaxanthins using high-performance liquid chromatography with a diode array detector coupled to electrospray ionisation mass spectrometry (HPLC-DAD-ESI-MS) in leaves of various cultivars of Beta vulgaris (beet) and Gymnocalycium mihanovichi i grafted cacti. …”
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  5. 745

    Antibiotic exposure is associated with minimal gut microbiome perturbations in healthy term infants by Alain J. Benitez, Ceylan Tanes, Elliot S. Friedman, Joseph P. Zackular, Eileen Ford, Jeffrey S. Gerber, Patricia A. DeRusso, Andrea Kelly, Hongzhe Li, Michal A. Elovitz, Gary D. Wu, Babette Zemel, Kyle Bittinger

    Published 2025-01-01
    “…Here, we use a prospective longitudinal birth cohort of n = 323 healthy term African American children to determine the association between antibiotic exposure and the gut microbiome through shotgun metagenomics sequencing as well as bile acid profiles through liquid chromatography-mass spectrometry. Results Stool samples were collected at ages 4, 12, and 24 months for antibiotic-exposed (n = 170) and unexposed (n = 153) participants. …”
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  6. 746

    The impact of weather conditions in different years on the biochemical composition of linseed oil by G. A. Popova, N. B. Rogalskaya, N. V. Knyazeva, V. M. Trofimova, T. V. Shelenga, E. A. Porokhovinova, N. B. Brutch

    Published 2021-10-01
    “…The content of 15 fatty acids (lauric, myristic, palmitic, palmitoleic, margaric, stearic, oleic, cis-vaccenic, linoleic, linolenic, arachidic, eicosenic, arachido nic, behenic, and lignoceric) was assessed in linseed oil using gas–liquid chromatography.Results. The tested material presented a wide diversity of genes controlling different steps of fatty acids biosynthesis and genetic mechanisms involved in the responses to the changing environment. …”
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  7. 747

    Hyperandrogenism, Elevated 17-Hydroxyprogesterone and Its Urinary Metabolites in a Young Woman with Ovarian Steroid Cell Tumor, Not Otherwise Specified: Case Report and Review of t... by Felix C. K. Wong, Angela Z. Chan, W. S. Wong, Angel H. W. Kwan, Tracy S. M. Law, Jacqueline P. W. Chung, Jeffrey S. S. Kwok, Angel O. K. Chan

    Published 2019-01-01
    “…While a diagnosis of polycystic ovary syndrome (PCOS) with its associated metabolic disturbances was initially considered, serum total testosterone, androstenedione, and 17-hydroxyprogesterone (17-OHP) measured by liquid chromatography tandem mass spectrometry (LC-MS/MS) were significantly increased. …”
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  8. 748

    Simultaneous Quantification of 25-Hydroxyvitamin D3 and 24,25-Dihydroxyvitamin D3 in Rats Shows Strong Correlations between Serum and Brain Tissue Levels by Ying Xue, Xin He, Huan-De Li, Yang Deng, Miao Yan, Hua-Lin Cai, Mi-Mi Tang, Rui-Li Dang, Pei Jiang

    Published 2015-01-01
    “…Therefore, we developed a novel analysis method by using high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) to simultaneously quantify the concentrations of 25-hydroxyvitamin D3 (25(OH)D3) and 24,25-dihydroxyvitamin D3 (24,25(OH)2D3) in the serum and brain of rats fed with different dose of vitamin D3. …”
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  9. 749

    Cerebellar lipid dysregulation in SCA3: A comparative study in patients and mice by Alexandra F. Putka, Varshasnata Mohanty, Stephanie M. Cologna, Hayley S. McLoughlin

    Published 2025-03-01
    “…However, the major constituent of white matter – lipids – remains understudied in SCA3.In this study, we conducted the first unbiased investigation of brain lipids in SCA3, focusing on the disease-vulnerable cerebellum of SCA3 postmortem patients and mouse models. Liquid chromatography-mass spectrometry uncovered widespread lipid reductions in patients with SCA3. …”
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  10. 750

    Pharmacokinetics of Transdermal Flunixin Meglumine Following a Single Dose in Marine Toads (Rhinella marina) by Gregory Scott, Meghan M. Louis, Julie A. Balko, Claire M. Bublitz, Brigid V. Troan, Ronald E. Baynes, Dustin Smith, Larry J. Minter

    Published 2020-01-01
    “…Plasma was analyzed by ultra-performance liquid chromatography-tandem mass spectrometry. Samples were analyzed individually and reported as a mean of the samples at each timepoint. …”
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  11. 751

    Altered O-Glycans in stimulated whole saliva from patients with primary Sjögren’s syndrome and non-pSS sicca by Sarah Kamounah, Kristina A. Thomsson, Christiane Elisabeth Sørensen, Eric Paul Bennett, Niclas G. Karlsson, Anne Marie Lynge Pedersen

    Published 2024-11-01
    “…O-linked oligosaccharides from stimulated whole saliva (SWS) samples from 24 patients with pSS, 38 patients with non-pSS sicca, and 23 healthy controls were analyzed using liquid chromatography mass spectrometer (LC-MS). Non-fractionated reduced and alkylated saliva was dot-blotted to PVDF-membrane and O-linked oligosaccharides were released using reductive beta-elimination. …”
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  12. 752

    Plasma and Milk Pharmacokinetics and Estimated Milk Withdrawal Time of Tolfenamic Acid in Lactating Sheep by Orhan Corum, Kamil Uney, Devran Coskun, Duygu Durna Corum, Gul Cetin, Muammer Elmas

    Published 2024-11-01
    “…The concentrations of tolfenamic acid in the plasma and milk were determined using high‐pressure liquid chromatography and evaluated using non‐compartmental analysis. …”
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  13. 753

    Fat Body Metabolome Revealed Glutamine Metabolism Pathway Involved in Prepupal <i>Apis mellifera</i> Responding to Cold Stress by Xinjian Xu, Mingjie Cao, Chenyu Zhu, Lingqing Mo, Huajiao Huang, Jiaying Xie, Bingfeng Zhou, Shujing Zhou, Xiangjie Zhu

    Published 2025-01-01
    “…In this study, the ultra-performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS)-based non-target metabolome was analyzed between the cold-treated (CT, 20 °C, 36 h) and control (CK, 35 °C) fat body in prepupal honeybees. …”
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  14. 754

    High-Performance Liquid Chromatographic Ultraviolet Determination of Memantine Hydrochloride after In Vitro Transdermal Diffusion Studies by Sergio del Rio-Sancho, César E. Serna-Jiménez, M. Aracely Calatayud-Pascual, Cristina Balaguer-Fernández, Andrés Femenía-Font, Virginia Merino, Alicia López-Castellano

    Published 2013-01-01
    “…The purpose of the present work was to validate an accurate and precise high-performance liquid chromatography (HPLC) method involving ultraviolet detection for the quantitative analysis of memantine hydrochloride. …”
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  15. 755

    Development and comprehensive greenness assessment of HPLC method for quality control of β-sitosterol in pharmaceutical ointments with trio-color coded evaluation by Haya I. Aljohar, Abdullah M. Al-Hossaini, Seham A. Alzammay, Samiah Alhabardi, Hadir M. Maher, Aya R. Ahmed

    Published 2025-01-01
    “…Abstract A simple, rapid, and reproducible high-performance liquid chromatography (HPLC) method has been developed and validated for the determination of β-sitosterol in the pharmaceutical dosage form of moist exposed burn ointment (MEBO). …”
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  16. 756

    Multi-Omics and Network-Based Drug Repurposing for Septic Cardiomyopathy by Pei-Pei Liu, Xin-Yue Yu, Qing-Qing Pan, Jia-Jun Ren, Yu-Xuan Han, Kai Zhang, Yan Wang, Yin Huang, Tao Ban

    Published 2025-01-01
    “…Methods: We generated a mouse model of SCM induced by lipopolysaccharide (LPS) and then obtained comprehensive metabolic and genetic data from SCM mouse hearts using ultra-performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) and RNA sequencing (RNA-seq). …”
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  17. 757

    Comprehensive characterization of higher order structure changes in methionine oxidized monoclonal antibodies via NMR chemometric analysis and biophysical approaches by Mingyue Li, Victor A. Beaumont, Shahajahan Akbar, Hannah Duncan, Arch Creasy, Wenge Wang, Kelly Sackett, Lisa Marzilli, Jason C. Rouse, Hai-Young Kim

    Published 2024-12-01
    “…We used a forced degradation method involving concentration-dependent oxidation by peracetic acid, in which Met oxidation is site-specifically quantified by liquid chromatography-mass spectrometry. Conventional biophysical techniques report nuanced results, in which CD detects no change to the secondary structure and little change in the tertiary structure. …”
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  18. 758

    Utility of Integrated Analysis of Pharmacogenomics and Pharmacometabolomics in Early Phase Clinical Trial: A Case Study of a New Molecular Entity by Jaeseong Oh, Sojeong Yi, Namyi Gu, Dongseong Shin, Kyung-Sang Yu, Seo Hyun Yoon, Joo-Youn Cho, In-Jin Jang

    Published 2018-09-01
    “…Metabolomics profiling was performed from plasma samples using liquid chromatography coupled with quadrupole time-of-flight mass spectrometry. …”
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  19. 759

    Investigation of 4-Nitro-N, N-diphenylaniline as a chemical tracer under high pressure high temperature reservoir conditions for enhanced oil recovery applications by Subhadip Maiti, Nishant Kumar Choudhary, Kiran R. Gore, Sandeep D. Kulkarni

    Published 2025-02-01
    “…Ultraviolet (UV) and high-performance liquid chromatography (HPLC) techniques were established to measure the ppm-level concentrations of 4-FBA and N-TPA in the standard brine solutions. …”
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  20. 760

    Residual TPO Content of Photopolymerized Additively Manufactured Dental Occlusal Splint Materials by Philipp Messer-Hannemann, Max Wienhold, Hoda Esbak, Alexander Brunner, Andreas Schönebaum, Falk Schwendicke, Susanne Effenberger

    Published 2024-12-01
    “…TPO extraction was conducted using a maximum of eight extraction cycles of 72 h at a temperature of 37 °C until no more TPO eluates were detected by high-performance liquid chromatography (HPLC). The margin of safety (MoS) was calculated as the ratio between the Derived No-Effect Level (DNEL) and the estimated exposure based on the amount of TPO extracted. …”
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