Showing 601 - 620 results of 969 for search '"liquid chromatography"', query time: 0.06s Refine Results
  1. 601

    Evaluation of Two Parts of Lithocarpus polystachyus Rehd. from Different Chinese Areas by Multicomponent Content Determination and Pattern Recognition by Min Wei, Yangling Tuo, Ye Zhang, Qi Deng, Cuiying Shi, Xuexian Chen, Xu Zhang

    Published 2020-01-01
    “…The purpose of this work is to establish a new method using high-performance liquid chromatography-diode array detection (HPLC-DAD) with chemometrics analysis to determine the content of catechin, isoquercetin, astragalin, phloridzin, trilobatin, and phloretin for one flavanol and five flavonoids, filter out the key compounds, and evaluate the quality of 26 batches of tender leaves and flower spikes of Lithocarpus polystachyus Rehd. …”
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  2. 602

    Stability and neurotoxic impact of organophosphate pesticides in aqueous environments by Vladan J. Anićijević, Tamara Tasić, Vedran Milanković, Radovan M. Karkalić, Tamara D. Lazarević Pašti

    Published 2025-01-01
    “…The concentration of the investigated pesticides during decomposition was monitored by ultraperformance liquid chromatography (UPLC). At the same time, a decrease in the toxicity of the treated samples was observed by measuring the activity of the enzyme AChE. …”
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  3. 603

    Vitamin B6 Deficiency Induces Autism-Like Behaviors in Rats by Regulating mTOR-Mediated Autophagy in the Hippocampus by Lijuan Chen, Jing Li, Xinglian Liu, Zhiwei Zhao, Yan Jin, Yikun Fu, Aiqin Zhou, Chengqun Wang, Yan Zhou

    Published 2023-01-01
    “…Gamma-aminobutyric acid (GABA) generation and synaptic inhibition of neurons in the hippocampus of rat were detected via immunofluorescence staining, followed by the measurement of GABA concentration through high-performance liquid chromatography (HPLC). The role of VB6 in the autophagy and apoptosis of cells was determined via Western blot and terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL). …”
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  4. 604

    An untargeted metabolomic analysis of acute AFB1 treatment in liver, breast, and lung cells. by Heidi H Cao, Sabrina Molina, Susan Sumner, Blake R Rushing

    Published 2025-01-01
    “…Treated and control cells' metabolomic profiles were evaluated via ultra-high performance liquid chromatography-high resolution mass spectrometry (UHPLC-HRMS). …”
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  5. 605

    Metformin dosage and galectin-3 levels: insights from PCOS patients preparing for IVF by Valentina N. Nikolić, Milan Stefanović, Milan Stefanović, Dejan Mitić, Dejan Mitić, Slavica Sunarić, Vladana Stojiljkovic, Hristina Trajković, Aleksandra Ignjatović, Dragana Stokanović

    Published 2025-01-01
    “…Using high-performance liquid chromatography to measure metformin concentrations and ELISA for galectin-3, our results revealed that both metformin dosage and hyperprolactinemia significantly statistically associated with galectin-3 levels, while body mass index (BMI) showed no significant association. …”
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  6. 606

    Evaluation of Small Intestinal Permeability in Patients with Overlap Syndrome (Autoimmune Hepatitis/Primary Biliary Cholangitis) by D. R. Akberova, A. Kh. Odintcova, D. I. Abdulganieva

    Published 2023-06-01
    “…The determination of the permeability of the small intestine was carried out by a “double sugar test” (the ratio of lactulose/mannitol in urine), using the method of high-performance liquid chromatography — mass spectrometry.Results. In patients with AIH/PBC, an increase in intestinal permeability was found — 0.20 [0.09; 0.30] (p < 0.001) compared with the control group 0.01 [0.01; 0.02]. …”
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  7. 607

    Multi-modal comparison of molecular programs driving nurse cell death and clearance in Drosophila melanogaster oogenesis. by Shruthi Bandyadka, Diane P V Lebo, Albert A Mondragon, Sandy B Serizier, Julian Kwan, Jeanne S Peterson, Alexandra Y Chasse, Victoria K Jenkins, Anoush Calikyan, Anthony J Ortega, Joshua D Campbell, Andrew Emili, Kimberly McCall

    Published 2025-01-01
    “…By coupling the GAL4-UAS system to Translating Ribosome Affinity Purification (TRAP-seq) and proximity labeling (HRP-KDEL) followed by Liquid Chromatography tandem mass-spectrometry, we performed high-throughput screens to identify pathways selectively activated or repressed by follicle cells to employ nurse cell-clearance routines. …”
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  8. 608

    Functional Biscuits with Soy Protein by Ekaterina S. Statsenko, Mikhail A. Shtarberg, Eugene A. Borodin

    Published 2023-09-01
    “…The isoflavonoid test involved high performance liquid chromatography with methanol:water eluent. The experimental biscuits had a higher nutritional value; the absorption indicator fell from 196 to 172%. …”
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  9. 609

    Differentiation between 3,4- and 4,15-Epoxyeudesmanolides by Electrospray Ionization Tandem Mass Spectrometry by Herbert Júnior Dias, Ricardo Stefani, José Carlos Tomaz, Ricardo Vessecchi, Antônio Eduardo Miller Crotti

    Published 2017-01-01
    “…These data can be useful for the fast differentiation between epoxyeudesmanolide regioisomers directly from Dimerostemma extracts by liquid chromatography-tandem mass spectrometry (LC-MS/MS), as an alternative to NMR, or even for quantitation studies of these compounds using multiple reaction monitoring (MRM) scan.…”
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  10. 610

    Urine amino acid and gamma aminobutyric acid level in COVID 19 patients by Cemal Kazezoglu, Arzu İrvem, Yasemin Tuba Sutasir, Büşra Çakiroglu, Banu Kirgiz, Habip Yilmaz, Ali Kocatas

    Published 2025-02-01
    “…The amino acid profile of these patients' urine samples, 30 different amino acid levels and creatine levels were examined using the liquid chromatography-mass spectrometry (LCMS) method on the SCIEX QTRAP 4500 device. …”
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  11. 611
  12. 612

    Pharmacokinetic Comparisons of Mangiferin and Mangiferin Monosodium Salt in Rat Plasma by UPLC-MS/MS by Hongbin Guo, Mengqiao Chen, Mengran Li, Mingye Hu, Baohua Chen, Chengyan Zhou

    Published 2019-01-01
    “…An appropriate high sensitivity and selectivity ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was applied to the comparison of plasma pharmacokinetics in MG and MG-Na using carbamazepine as internal standard (IS). …”
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  13. 613

    Multifunctional Plumeria rubra nanoparticles: Antimicrobial, antiviral, antiparasitic and anti-inflammatory activities by Bassma H. Elwakil, Mohab H. Elsabrouty, Areej Eskandrani, Keshav Raj Paudel, Esraa Abdelhamid Moneer

    Published 2025-01-01
    “…Plumeria rubra flowers were collected and extracted using a Soxhlet apparatus and examined through gas and liquid chromatography which revealed the presence of palmitic acid, linoleic acid, N-(O-Nitrophenylthio)-l-leucine, plumieridin B, lupeol, and rutin. …”
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  14. 614

    Biomonitoring PhIP, a Potential Prostatic Carcinogen, in the Hair of Healthy Men of African and European Ancestry by Robert J. Turesky, Clarence Jones, Jingshu Guo, Kari Cammerrer, Laura A. Maertens, Emmanuel S. Antonarakis, Zhanni Lu, Logan G. Spector

    Published 2025-01-01
    “…We previously demonstrated that scalp hair is a reliable biospecimen for measuring PhIP intake using liquid chromatography-mass spectrometry. This study aimed to determine whether PhIP dietary intake is higher in AA men, potentially contributing to this health disparity. …”
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  15. 615

    Metabolic Profiles of the Gut Microbiota in Patients with Different Stages of Metabolism Dysfunction-Associated Fatty Liver Disease by X. Cao, O. Yu. Zolnikova, R. V. Maslennikov, E. A. Poluektova, E. L. Bueverova, M. S. Reshetova, M. S. Zharkova, V. T. Ivashkin

    Published 2024-10-01
    “…The level and spectrum of short-chain fatty acids (SCFA) were determined by gas-liquid chromatography.   Results. It was found that patients with MAFLD at the stage of steatosis and cirrhosis of the liver have unidirectional changes in the metabolic activity of the intestinal microbiota. …”
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  16. 616

    Determination of Pendimethalin Dynamic Residual Distribution in Crucian Carp Tissues and Associated Risk Assessment by Lu Qiao, Na Yuan, Gang Han, Bo Cheng, Defu Zhang, Jinlong Song, Yingchun Mu

    Published 2021-01-01
    “…This study developed the determination of dynamic residual distribution for pendimethalin in crucian carp tissues (muscle, liver, kidney, gill, and blood) under semistatic exposure system by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method. …”
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  17. 617

    Antioxidative Effects of Phenolic Compounds of Mushroom Mycelia in Simulated Regions of the Human Colon, In Vitro Study by Vamanu Emanuel, Pelinescu Diana, Avram Ionela

    Published 2018-03-01
    “…Total polyphenolic content was higher after A. brunnescens consumption, and four types of polyphenols were identified by high-performance liquid chromatography. Major phenolic acids were gentisic acid, homogentisic acid, and small amounts of caffeic acid. …”
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  18. 618

    Investigating the Presence of Falsified and Poor-Quality Fixed-Dose Combination Artemether-Lumefantrine Pharmaceutical Dosage Forms in Kumasi, Ghana by Simon Nyarko, Kwabena Ofori-Kwakye, Raphael Johnson, Noble Kuntworbe, Denis Dekugmen Yar

    Published 2024-01-01
    “…The samples were then analyzed for drug content (assay) using reverse-phase high-performance liquid chromatography (RP-HPLC). All the tablet samples conformed to BP specification limits for uniformity of weight (deviation of less than ± 5%), hardness (4.0–10 kg/mm2), friability (<1%), and disintegration time (<15 minutes). …”
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  19. 619

    Synthesis of the Magnetically Nanoporous Organic Polymer Fe3O4@SiO2-NH2-COP and Its Application in the Determination of Sulfonamide Residues in Surface Water Surrounding a Cattle F... by Yuqin Yang, Junjie Miao, Zhendong Yin, Weili Hao, Hongmei Shi, Ling Ma, Tiesheng Shi

    Published 2022-01-01
    “…The combination of MSPE with high-performance liquid chromatography separation together with ultraviolet detection (HPLC-UV) was established as an effective method for the determination of four sulfonamide (SA) residues in surface water surrounding a cattle farm. …”
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  20. 620

    Evaluation of Five Ready-to-Use Bases for the Topical Administration of Propranolol Hydrochloride to Treat Infantile Hemangioma by Chiara Lacassia, Annalisa Cutrignelli, Flavia Maria la Forgia, Sergio Fontana, Antonio Lopalco, Nunzio Denora, Angela Assunta Lopedota

    Published 2025-01-01
    “…The chemical stability of the drug in the five formulations was assessed by using a high-performance liquid chromatography (HPLC) method. In vitro drug-release and permeability experiments were conducted through synthetic membranes and the outer pavilion of a pig’s ear by utilizing Franz-type diffusion cells. …”
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