Showing 501 - 520 results of 1,443 for search '"mass spectrometry"', query time: 0.10s Refine Results
  1. 501

    Production of Biodiesel from Waste Vegetable Oil via KM Micromixer by M. F. Elkady, Ahmed Zaatout, Ola Balbaa

    Published 2015-01-01
    “…The presence of methyl ester groups at the produced biodiesel was confirmed using both the gas chromatography-mass spectrometry (GC-MS) and the infrared spectroscopy (FT-IR). …”
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    Article
  2. 502

    Protocol for generating protein profiles and distance-based network analysis of murine tissue slices by Luisa Schmidt, Philipp Antczak, Marcus Krüger

    Published 2025-03-01
    “…We describe steps for preparing muscle sections and liquid chromatography-tandem mass spectrometry (LC-MS/MS) analyses to generate spatial protein profiles along the longitudinal skeletal muscle axis. …”
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  3. 503

    Development of the High Sensitivity and Selectivity Method for the Determination of Histamine in Fish and Fish Sauce from Vietnam by UPLC-MS/MS by Quang Hieu Tran, Thanh Tan Nguyen, Kim Phuong Pham

    Published 2020-01-01
    “…A selective, sensitive, and rapid method by using ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) for the determination of histamine in fish and fish sauce was developed. …”
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  4. 504

    Species Identification and Effects of Aromatic Hydrocarbons on the Fluorescence Spectra of Different Oil Samples in Seawater by Yongchao Hou, Ying Li, Guannan Li, Mingfei Xu, Yunpeng Jia

    Published 2021-01-01
    “…Here, we developed a composition method using the fluorescence spectra of eight AH categories analyzed by gas chromatography-mass spectrometry (GC-MS) to evaluate the contribution of AHs to the total fluorescence of six different oil species. …”
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    Article
  5. 505

    Long-Term Stability of Hydromorphone in Human Plasma Frozen at −20°C for Three Years Quantified by LC-MS/MS by Andreas Wehrfritz, Stefanie Schmidt, Harald Ihmsen, Jürgen Schüttler, Christian Jeleazcov

    Published 2022-01-01
    “…Hydromorphone concentrations were determined by ultra-performance liquid chromatography (UPLC) with gradient elution, followed by tandem mass spectrometry with electrospray ionization. Calibration curves demonstrated linearity of the assay in the concentration range of 0.3–20 ng/mL hydromorphone. …”
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  6. 506

    ANTIBACTERIAL ACTIVITIES AND CHEMICAL COMPOSITION OF ESSENTIAL OIL OF BLUMEA BALSAMIFERA (L.) DC., DISTRIBUTED IN LAMDONG PROVINCE, VIETNAM by Hoàng Thị Bình, Nguyễn Minh Trí, Nguyễn Hữu Quân, Nguyễn Văn Ngọc

    Published 2020-05-01
    “…The hydrodistillation method was used to isolate essential oil from leaves of this species, and gas chromatography/mass spectrometry (GC-MS) techniques were used to analyze the chemical constituents of the essential oil. …”
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  7. 507

    Protocol for the purification and analysis of nuclear UFMylated proteins by Pudchalaluck Panichnantakul, Marlene Oeffinger

    Published 2025-03-01
    “…We then describe procedures for identifying and analyzing purified UFMylated proteins using mass spectrometry and western blot.For complete details on the use and execution of this protocol, please refer to Panichnantakul et al.1 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.…”
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  8. 508

    Environmental Detoxification of Benzimidazole Fungicide Fuberidazole via Microbial Action in Liquid Cultures by Jehad S. Al-Hawadi, Khuram Shahzad Ahmad, Mahwash Mahar Gul, Ghulam Abbas Ashraf, Mohammad Altaf

    Published 2024-09-01
    “…Analysis and quantification of Fuberidazole degradation and its metabolites were performed by gas chromatography mass spectrometry and UV-visible spectrophotometry. Pseudomonas syringae and Penicillium chrysogenum displayed great bioremedial potential and degraded 91 and 86% of Fuberidazole after 35 days. …”
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  9. 509

    Effects of Pyrrhotite on the Combustion Behavior and the Kinetic Mechanism of Pyrite-Pyrrhotite Mixture Powders in the Air by Changshun Tian, Yunzhang Rao, Gang Su, Tao Huang

    Published 2023-01-01
    “…To study the influence of the pyrrhotite content in mixed mineral powders on the combustion behavior in the air, thermogravimetric mass spectrometry, X-ray diffraction analysis, and scanning electron microscopy were employed. …”
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  10. 510

    Determination of Progestin Residues in Fish by UPLC-Q-TOF/MS Coupled with QuEChERS by Chunxiu Gu, Yanling Cheng, Xin Zhen, Xiaoxuan Chen, Kaowen Zhou

    Published 2019-01-01
    “…A novel method was developed for simultaneous determination of 10 progestin residues in fish by ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry (UPLC-Q-TOF/MS) combined with a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method. …”
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  11. 511

    Preparation and Properties of Ag-Containing Diamond-Like Carbon Films by Magnetron Plasma Source Ion Implantation by K. Baba, R. Hatada, S. Flege, W. Ensinger

    Published 2012-01-01
    “…The chemical composition of the deposited films was modified by the respective gas flows and determined using X-ray photoelectron spectroscopy and secondary ion mass spectrometry. The silver concentration within the DLC films influenced the structure and the tribological properties. …”
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  12. 512

    Effect of Pretreatment on Detection of 37 Pesticide Residues in Chrysanthemum indicum by Xiao-Ying Lu, Yan-Qin Ouyang, Wei-Ya Zeng, Cui-Qing Lin, Lu-Hua Xiao, Gui-Hua Luo, Ruo-Ting Zhan, Ping Yan

    Published 2021-01-01
    “…This study aimed to develop a method, followed by gas chromatography-mass spectrometry, for detecting 37 pesticides in Chrysanthemum indicum (C. indicum) and investigating the decrease in the matrix-induced enhancement effect. …”
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  13. 513

    Alkaloids in Processed Rhizoma Corydalis and Crude Rhizoma Corydalis Analyzed by GC/MS by Zhifeng Guo, Ru Cai, Huidan Su, Yunlong Li

    Published 2014-01-01
    “…The alkaloids in the processed Rhizoma Corydalis and the crude Rhizoma Corydalis were qualitatively and semiquantitatively analyzed using gas chromatography-mass spectrometry (GC/MS) method. The processing herb drug procedure was carried out according to the standard method of Chinese Pharmacopoeia. …”
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  14. 514

    Spray-Dried Microencapsulation of Oregano (Lippia graveolens) Polyphenols with Maltodextrin Enhances Their Stability during In Vitro Digestion by Manuel de Jesús Bernal-Millán, Erick Paul Gutiérrez-Grijalva, Laura Contreras-Angulo, M. Dolores Muy-Rangel, L. Xochitl López-Martínez, J. Basilio Heredia

    Published 2022-01-01
    “…The analyzed physical properties were morphology measured by electron microscopy and humidity; other properties evaluated were the content of total phenolic compounds, antioxidant capacity determined by DPPH and ABTS assays, and phenolic profile by ultraperformance liquid chromatography coupled to mass spectrometry (UPLC-MS). During the gastrointestinal simulation, a stability of 85% was determined in the intestinal stage. …”
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  15. 515

    Determination of 20 Neonicotinoid Insecticides and Their Metabolites in Infant Foods by a Modified QuEChERS Method Combined with HPLC-MS/MS by Liqiang Guo, Kai Li, Jinling Zhang, Guoning Tian, Ke Wang, Yajing Li

    Published 2022-01-01
    “…A rapid, effective, and reliable method for the simultaneous detection of 20 neonicotinoids and their metabolites in infant foods has been developed using liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). To improve the accuracy and precision of the method, different extraction solvents, extraction methods, and adsorbents were evaluated to achieve a better recovery and clean-up effect. …”
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  16. 516

    Aerobic Biodegradation of Four Groups of Steroid Hormones in Activated Sludge by Jiaxin Zhang, Jun Luo, Hong Chang

    Published 2020-01-01
    “…An analytical method was developed for simultaneously monitoring four estrogens, seven androgens, seven progestogens, and eleven glucocorticoids in a single water sample using liquid chromatography-electrospray tandem mass spectrometry. Laboratory studies were then performed to investigate the aerobic biodegradation of 29 steroids belonging to the four groups. …”
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  17. 517

    Urine metabolomic profiles of autism and autistic traits-A twin study. by Abishek Arora, Francesca Mastropasqua, Sven Bölte, Kristiina Tammimies

    Published 2024-01-01
    “…Here, we used untargeted mass spectrometry-based urine metabolomics to investigate metabolic differences for autism diagnosis and autistic traits in a well-characterized twin cohort (N = 105). …”
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  18. 518

    Toxicity of Ulva lactuca and green fabricated silver nanoparticles against mosquito vectors and their impact on the genomic DNA of the dengue vector Aedes aegypti by Al Thabiani Aziz

    Published 2022-06-01
    “…Ulva lactuca, a green macroalgae extract analysed through gas chromatography mass spectrometry reveals 31 compounds. Resistance of mosquito vectors to synthetic insecticides remains a major problem. …”
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  19. 519

    Microwave-Assisted Digestion Using Dilute Nitric Acid and Hydrogen Peroxide for Multielement Determination in Wheat Flour by ICP-MS by Ibrahim A. Alhagri, Mosa Albeshry

    Published 2023-01-01
    “…A closed-vessel microwave digestion method was developed for the simultaneous determination of macro, micro, and toxic elements (Mg, K, Ca, Al, Mn, Fe, Cu, Zn, Se, Rb, V, Cd, and As) in wheat by inductively coupled plasma mass spectrometry (ICP-MS). A two-level factorial design with four variables was employed to determine the optimal conditions for the significant parameters. …”
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  20. 520

    Repair of Ceramic Ware in the Neolithic and Eneolithic (case study of the extreme North-East of Europe) by Viktor N. Karmanov

    Published 2024-08-01
    “…Five samples of sealants from the Final Neolithic–Eneolithic Chuzhyael culture were analyzed by gas chromatography-mass spectrometry. It was found that the adhesive materials were tar obtained by the “double pot” method – heating the raw material in one pot while pouring the product into another container. …”
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