Showing 621 - 640 results of 1,443 for search '"mass spectrometry"', query time: 0.08s Refine Results
  1. 621

    Urinary BA Indices as Prognostic Biomarkers for Complications Associated with Liver Diseases by Wenkuan Li, Jawaher Abdullah Alamoudi, Nagsen Gautam, Devendra Kumar, Macro Olivera, Yeongjin Gwon, Sandeep Mukgerjee, Yazen Alnouti

    Published 2022-01-01
    “…To develop and validate prognostic biomarkers for the prediction of complications of cholestatic liver disease based on urinary BA indices, liquid chromatography-tandem mass spectrometry was used to analyze urine samples from 257 patients with cholestatic liver diseases during a 7-year follow-up period. …”
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  2. 622

    Amphetamine Positive Urine Toxicology Screen Secondary to Atomoxetine by Joshua L. Fenderson, Amy N. Stratton, Jennifer S. Domingo, Gerald O. Matthews, Christopher D. Tan

    Published 2013-01-01
    “…Results were positive for amphetamines; however, the presence of these substances could not be confirmed with urine gas chromatography-mass spectrometry (GC-MS). She denied any illicit drug use, herbal medications, or supplements, and her other prescription medications have not been previously known to cause a false-positive result for amphetamines. …”
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  3. 623

    Alterations of Serum Bile Acid Profile in Patients with Crohn’s Disease by Rui Sun, Jingjing Jiang, Ling Yang, Lu Chen, Hong Chen

    Published 2022-01-01
    “…Serum BA profiles were measured by liquid chromatography-tandem mass spectrometry. Results. Levels of primary BAs components, including cholic acid (CA) and chenodeoxycholic acid (CDCA), showed no significant difference when compared with HVs. …”
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  4. 624

    First identification report for amino acid composition of red algae Gracilaria spp. obtained from Central Java, Indonesia by Klara Kharisma Bunga Chandra, Tri Rini Nuringtyas, Tri Joko Raharjo

    Published 2024-12-01
    “…The usage of liquid chromatography coupled with high-resolution mass spectrometry (LC-HRMS) has been growing in biomedical and environmental sciences, offering high accuracy in protein detection. …”
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    Article
  5. 625

    Coupling Strategies for the Synthesis of Peptide-Oligonucleotide Conjugates for Patterned Synthetic Biomineralization by Joshua D. Carter, Thomas H. LaBean

    Published 2011-01-01
    “…Formation of the conjugates was confirmed by gel electrophoresis and mass spectrometry while molecular recognition functionality of the peptide portion was verified using atomic force microscopy. …”
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  6. 626

    Screening of flavonoid aglycons’ metabolism mediated by the human liver cytochromes P450 by Benković Goran, Bojić Mirza, Maleš Željan, Tomić Siniša

    Published 2019-12-01
    “…To evaluate flavonoid’s metabolism and structure of the products, high-performance liquid chromatography coupled with high-resolution mass spectrometry was used. Out of 30 flavonoids, 15 were susceptible to oxidative metabolism mediated by cytochromes P450. …”
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  7. 627

    High-temperature structural disorders stabilize hydrous aluminosilicates in the mantle transition zone by Baoyun Wang, Jin Liu, Yanyao Zhang, Baisheng Nie, Wei Yang, Jialong Hao, Xing Ding, Yongjun Tian

    Published 2025-01-01
    “…Here we systematically investigate the crystal structures and chemical compositions of typical hydrous aluminosilicates using single-crystal X-ray diffraction, electron probe microanalyzer, and nanoscale secondary ion mass spectrometry. These single crystals are synthesized at 15.5–22.0 GPa and 1400–1700 °C, featuring pervasive structural disorders. …”
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  8. 628

    Antioxidant and Antibacterial Activities of the Essential Oil of Moroccan Tetraclinis articulata (Vahl) Masters by Halima Rabib, Chaimaa Elagdi, Mohammed Hsaine, Hassan Fougrach, Tayeb Koussa, Wadi Badri

    Published 2020-01-01
    “…The analysis of the major compounds of essential oil was performed by gas chromatography and mass spectrometry, and this oil is dominated by bornyl acetate (35.05%), camphor (11.17%), and α-pinene (10.84%). …”
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  9. 629

    Co-Pyrolysis of Plastic Waste and Lignin: A Pathway for Enhanced Hydrocarbon Recovery by Vilmantė Kudelytė, Justas Eimontas, Rolandas Paulauskas, Nerijus Striūgas

    Published 2025-01-01
    “…The gaseous products evolved during the pyrolysis process were analyzed by combined thermogravimetric and Fourier-transform infrared spectroscopy (TG-FTIR) and chromatography-mass spectrometry (Py-GC/MS) to analyze the functional groups and chemical composition of the obtained pyrolysis products. …”
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    Article
  10. 630

    Deep visual proteomics reveals DNA replication stress as a hallmark of signet ring cell carcinoma by Sonja Kabatnik, Xiang Zheng, Georgios Pappas, Sophia Steigerwald, Matthew P. Padula, Matthias Mann

    Published 2025-02-01
    “…We employed Deep Visual Proteomics (DVP), which combines AI-directed cell segmentation and classification with laser microdissection and ultra-high sensitivity mass spectrometry, for cell-type-specific proteomic analysis of SRCC across the bladder, prostate, seminal vesicle, and a lymph node of a single patient. …”
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  11. 631

    Dietary Risk Assessment and Ranking of Multipesticides in Dendrobium officinale by Meng-Ying Gu, Peng-Si Wang, Shang-Mei Shi, Jian Xue

    Published 2021-01-01
    “…Therefore, this study presents the levels of 141 pesticide residues in forty D. officinale samples, which were measured by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). And we used a deterministic estimate model to assess chronic and acute dietary exposure risk, as well as the cumulative risks for adults, children, and specific groups of consumers. …”
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  12. 632

    Dual-frequency ultrasonic oxidation of cyanobacterial toxins (MC-LR and MC-RR) at drinking water resources: Assessment of analytical methods and ultrasonic reactor configuration by Zeynep Eren

    Published 2025-02-01
    “…In this work, it was simultaneously identified and quantified with liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) without any phase extraction for sample preparation. …”
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  13. 633

    Classification and determination of the tobacco raw materials authenticity during the forensic examination by S. A. Trofimets

    Published 2024-12-01
    “…Modern methods of analysis are presented, in particular, instrumental methods used to establish quality and safety indicators (visual inspection, microscopic analysis, chemical analysis, physicochemical methods, gas chromatography and mass spectrometry, spectral analysis). These methods allow to examine tobacco raw materials at the molecular, chemical and morphological levels to obtain objective information about its quality, safety and other characteristics that may be important in litigation. …”
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  14. 634

    Proteomics and Its Current Application in Biomedical Area: Concise Review by Semira Gobena, Bemrew Admassu, Mebrie Zemene Kinde, Abebe Tesfaye Gessese

    Published 2024-01-01
    “…Various sophisticated techniques are employed in proteomics, including polyacrylamide gel electrophoresis, mass spectrometry analysis, NMR spectroscopy, protein microarray, X-ray crystallography, and Edman sequencing. …”
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  15. 635

    Proteomic Technology “Lens” for Epithelial-Mesenchymal Transition Process Identification in Oncology by Monica Neagu, Carolina Constantin, Marinela Bostan, Constantin Caruntu, Simona Rebeca Ignat, Sorina Dinescu, Marieta Costache

    Published 2019-01-01
    “…Out of the proteomic technology armentarium, mass spectrometry and array technologies are the most used approaches. …”
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    Article
  16. 636

    Rapid Identification and Simultaneous Quantification of Aristolochic Acids by HPLC-DAD and Confirmations by MS in Aristolochia chilensis Using a Limited Biomass by Michael Araya, Samantha García, Marcia González-Teuber

    Published 2018-01-01
    “…Six aristolochic acids were identified in the Chilean species Aristolochia chilensis using high-performance liquid chromatography coupled to a diode array detector (HPLC-DAD) and subsequent confirmation with mass spectrometry (MS). The fractions of each signal were collected and injected directly into an Orbitrap mass detector model Q Exactive Focus (Thermo Scientific). …”
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  17. 637

    Exploring Nanoplastics Bioaccumulation in Freshwater Organisms: A Study Using Gold-Doped Polymeric Nanoparticles by Gabriella F. Schirinzi, Guillaume Bucher, Marisa Sárria Pereira de Passos, Vanessa Modesto, Miguel-Ángel Serra, Douglas Gilliland, Nicoletta Riccardi, Jessica Ponti

    Published 2025-01-01
    “…The results demonstrated that measuring gold content using inductively coupled plasma mass spectrometry (ICP-MS), along with confirmation of its presence through electron microscopy in selected exposed samples provides insight into the accumulation and release of nanoplastics by organisms playing a relevant ecological role at the early levels of aquatic food webs.…”
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  18. 638

    Characteristic of volatile flavor compounds in ‘Fengtangli’ plum (Prunus salicina Lindl.) were explored based on GC×GC-TOF MS by Xianfeng Hu, Deyan Li, Yi Ding, Yubo Zhang, Chunguang Ren

    Published 2025-01-01
    “…The purpose of this study was to explore the characteristics of volatile flavor compounds in ‘Fengtangli’ plum.MethodsThe flavor compounds of both ‘Fengtangli’ and ‘Siyueli’ plums were analyzed using comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC×GC-TOF MS).ResultsThe results revealed the presence of 495 volatile flavor compounds in ‘Fengtangli’ plum and 466 in ‘Siyueli’ plum. …”
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  19. 639

    Diversity of 4-Chloro-2-nitrophenol-Degrading Bacteria in a Waste Water Sample by Pankaj Kumar Arora, Alok Srivastava, Vijay Pal Singh

    Published 2016-01-01
    “…Gas chromatography-mass spectrometry analysis identified 5-chloro-2-methylbenzoxazole as the final product of 4C2NP decolorization in strain PC-7.…”
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  20. 640

    Antiplasmodial Properties and Bioassay-Guided Fractionation of Ethyl Acetate Extracts from Carica papaya Leaves by Paula Melariri, William Campbell, Paschal Etusim, Peter Smith

    Published 2011-01-01
    “…Carica papaya ethyl acetate extract was subjected to bioassay-guided fractionation to ascertain the most active fraction, which was purified and identified using high-pressure liquid chromatography (HPLC) and GC-MS (Gas chromatography-Mass spectrometry) methods. Linoleic and linolenic acids identified from the ethyl acetate fraction showed IC50 of 6.88 μg/ml and 3.58 μg/ml, respectively. …”
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