Showing 581 - 600 results of 1,443 for search '"mass spectrometry"', query time: 0.08s Refine Results
  1. 581

    The walnut tree as a source of progesterone for reproductive control in goats by P. Chemineau, A.L. Lainé, D. Gennetay, C. Porte, D. Chesneau, C. Laclie, G. Goudet, M. Meunier, M. Delmas, M.L. Greil, P. Liere, A. Pianos, A. Bernard, E. Dirlewanger, J.A. Delgadillo, M. Keller

    Published 2025-01-01
    “…High concentrations of P4—and to a lesser extent its reduction metabolites and phytosterols—were also measured by Gas Chromatography-Mass Spectrometry/Mass Spectrometry in leaf extracts. P4 concentrations were five times higher in October than in June. …”
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  2. 582

    Mesenchymal stem cells from perinatal tissues promote diabetic wound healing via PI3K/AKT activation by Jiawei Huang, Qingwen Deng, Lai Ling Tsang, Guozhu Chang, Jinghui Guo, Ye Chun Ruan, Chi Chiu Wang, Gang Li, Hon Fai Chan, Xiaohu Zhang, Xiaohua Jiang

    Published 2025-02-01
    “…Methods We performed in vitro and in vivo studies to compare the efficacy of hUCMSCs, hCVMSCs, and hDCMSCs. Mass spectrometry was used to analyze the secreted proteins of the MSCs. …”
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  3. 583

    TRACE ELEMENT COMPOSITION OF BERYL FROM SPODUMENE PEGMATITE DEPOSITS OF THE KUNAR PROVINCE, AFGHANISTAN by S.G. Skublov, A. Yosufzai, A.N. Evdokimov, A.K. Gavrilchik

    Published 2024-06-01
    “…The study of trace element composition of beryl from the Chambalak and Digal deposits of the Darai Pech pegmatite field of the Kunar province (Afghanistan) using secondary ion mass spectrometry (SIMS) revealed the sectoriality of the beryl crystal from the Chambalak deposit. …”
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  4. 584

    New Bioactive Metabolites from the Thermophilic Fungus Penicillium sp. Isolated from Ghamiqa Hot Spring in Saudi Arabia by Raha Orfali, Shagufta Perveen

    Published 2019-01-01
    “…The structures of the new compounds were unambiguously determined by comprehensive analysis of spectroscopic data, one- and two-dimensional NMR spectroscopy, and high-resolution mass spectrometry. All isolated metabolites were studied for their antibiotic effect against several pathogenic bacteria and for their cytotoxicity against the lymphoma human cancer cell line HTB-176. …”
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  5. 585

    Chemical constituents and antibacterial activity of essential oils in <i>Amomum longiligulare</i> from Vietnam by N. Hung, N. H. Toan

    Published 2022-10-01
    “…The essential oils were analyzed by gas chromatography–mass spectrometry techniques. The minimum inhibitory concentration (MIC) values were measured by the broth microdilution assay. …”
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  6. 586

    Venoms and Extracellular Vesicles: A New Frontier in Venom Biology by Auwal A. Bala, Naoual Oukkache, Elda E. Sanchez, Montamas Suntravat, Jacob A. Galan

    Published 2025-01-01
    “…Recent advancements in isolating and purifying EV cargo, mass spectrometry techniques, and bioinformatics have positioned EVs as potential biomarkers that could elucidate biological signaling pathways and provide valuable information on the relationship between venomous toxins, their mechanisms of action, and the effectiveness of antivenoms. …”
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    Article
  7. 587

    Antioxidant and Antimicrobial Activity of New Amide Compounds Containing Azo Group Using Dicyclohexylcarbodiimide (DCC) as Coupling Agent by Dania Mohammed Saleh, Bushra Kamel Al-Salami

    Published 2025-01-01
    “…The structures of synthesized compounds have been diagnosed with elemental analysis, FTIR, 1H-NMR, 13C-NMR, and mass spectrometry. The antibacterial activities for all new synthetic compounds was estimated accurately depending on selected bacteria such as Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative) using different concentrations to calculate minimum inhibition concentration. …”
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  8. 588

    SP-1-activated LINC01016 overexpression promotes gastric cancer invasion and metastasis through inhibiting EIF4A3-mediated MMP9 mRNA decay by Ying Sun, Hui Zhang, Duan-bo Shi, Peng Gao

    Published 2025-01-01
    “…EIF4A3 was identified as a binding partner of LINC01016 by RNA pull-down assay, mass spectrometry and western blot. We determined that LINC01016 can blocks the binding of EIF4A3 to MMP9 mRNA, thereby inhibiting EIF4A3-mediated nonsense-mediated RNA decay (NMD), increasing MMP9 mRNA level and protein expression levels to promote tumor progression. …”
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  9. 589

    Chemometric Analysis of Elemental Fingerprints for GE Authentication of Multiple Geographical Origins by Lu Xu, Qiong Shi, Si-Min Yan, Hai-Yan Fu, Shunping Xie, Daowang Lu

    Published 2019-01-01
    “…The levels of 15 mineral elements in GE, including Zn, Cd, Co, Cr, Cu, Ca, Mg, Mn, Mo, Ni, Pb, Sr, Fe, Na, and K, were determined using inductively coupled plasma mass spectrometry (ICP-MS). Using the autoscaled data of elemental fingerprints and partial least-squares discriminant analysis (PLSDA), two chemometrics strategies for multiclass classifications, One-Versus-Rest (OVR) and One-Versus-One (OVO), were studied and compared in discrimination of GE geographical origins. …”
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  10. 590

    Illumination on Chemical Compounds from Qufeng Zhitong Capsule and Its Potential Pharmacological Mechanism against Rheumatoid Arthritis Based on UHPLC/Q-Orbitrap-MS Combined with N... by Mengjie Xue, Lihua Zhang, Yuting Zhao, Qixuan Mu, Ying Cui, Ke Qian, Xin Chai

    Published 2022-01-01
    “…In this study, 61 compounds including 16 phenylpropanoids, 15 organic acids, 13 alkaloids, seven flavonoids, six iridoids, one saccharide, two aldehydes, and one saponin in QZC were simultaneously identified and traced to their herbal origins by ultra-high performance liquid chromatography tandem Q-Exactive Orbitrap high-resolution mass spectrometry (UHPLC/Q-Orbitrap-MS), where 31 of them were unambiguously identified by reference compounds, and the other 30 were tentatively characterized. …”
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  11. 591

    Antibacterial and Anticancer Potentials of Presynthesized Photosensitive Plectranthus cylindraceus Oil/TiO2/Polyethylene Glycol Polymeric Bionanocomposite by Musarat Amina, Nawal M. Al Musayeib, Nawal A. Alarfaj, Maha F. El-Tohamy, Gadah A. Al-Hamoud

    Published 2021-01-01
    “…The active components of P. cylindraceus oil were verified using gas chromatography coupled with mass spectrometry (GC-MS). The surface morphology of the resulted bionanocomposite film was characterized by various spectroscopic and microscopic techniques. …”
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  12. 592

    Evaluation of Proteins Released to Medium in Yeast-Bacteria Co-culture System by Çağatay Tarhan, Ayşegül Yanık

    Published 2023-06-01
    “…Different from the control conditions, new protein bands that emerged under the co-culture conditions were detected and two of these bands were analyzed by mass spectrometry (MS). While 6 of differentaited proteins were released by S.pombe, 257 proteins matched with E.coli proteom. …”
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  13. 593

    Rapid Screening and Quantitative Determination of Active Components in Qing-Hua-Yu-Re-Formula Using UHPLC-Q-TOF/MS and HPLC-UV by Xin Shao, Jie Zhao, Xu Wang, Yi Tao

    Published 2018-01-01
    “…In the present study, rapid ultrahigh-performance liquid chromatography coupled with quadrupole-time-of-flight mass spectrometry (UHPLC-Q-TOF/MS) was used to qualitatively analyze the components of QHYRF. …”
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  14. 594

    Isolation and Identification of Optochin-Resistant Viridans Group Streptococci from the Sputum Samples of Adult Patients in Jakarta, Indonesia by Wisiva Tofriska Paramaiswari, Nurma Sumar Sidik, Miftahuddin Majid Khoeri, Wisnu Tafroji, Wahyu Finasari Said, Dodi Safari

    Published 2021-01-01
    “…Optochin-resistant VGS isolates were identified by matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS). recA sequencing was used to confirm identified isolates at the genus level by MALDI-TOF MS. …”
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  15. 595

    Comparative Studies on the pH Dependence of DOW of Microcystin-RR and -LR Using LC-MS by Gaodao Liang, Ping Xie, Jun Chen, Ting Yu

    Published 2011-01-01
    “…The dependence of the n-octanol/water distribution ratio (DOW) of MC-RR and -LR to pH was measured by high-performance liquid chromatography combined with mass spectrometry (LC-MS). There was a remarkable difference in such relationships between MC-RR and -LR. …”
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  16. 596

    Analysis of Volatile Components in Tremella fuciformis by Electronic Nose Combined with GC-MS by Lijun Fu, Jing Tian, Li Liu, Yongzheng Ma, Xiumin Zhang, Changyang Ma, Wenyi Kang, Yong Sun

    Published 2022-01-01
    “…In order to quickly evaluate the quality of Tremella fuciformis, the volatile components of T. fuciformis from 4 provinces in China, including Hebei, Henan, Fujian, and Sichuan, were analyzed by electronic nose combined with gas chromatography-mass spectrometry (GC-MS), and the key aroma compounds were determined by relative odor activity value (ROAV). …”
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  17. 597

    Pharmacokinetics study of a supersaturatable self-microemulsifying drug delivery system for ellagic acid by UHPLC-Q-TOF-MS by Wang Jinglong, Fan Liqun, Zhang Lihua, Zheng Dandan, Wang Yingzi, Sun Xiao, Ji Yonghui

    Published 2021-12-01
    “…To evaluate the bioavailability of ellagic acid loaded super-saturatable self-microemulsifying drug delivery system (S-SMEDDS), its pharmacokinetic properties were studied in rats with an ultra-high performance liquid chromatography-quadrupole time-of-flight tandem mass spectrometry. The plasma samples were treated by solid-phase extraction method, and gallic acid was used as the internal standard when determining the concentration of ellagic acid. …”
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  18. 598

    Development and Validation of Gas Chromatography-Triple Quadrupole Mass Spectrometric Method for Quantitative Determination of Regulated Plasticizers in Medical Infusion Sets by So Hyeon Jeon, Yong Pyo Kim, Younglim Kho, Jeoung Hwa Shin, Won Hyun Ji, Yun Gyong Ahn

    Published 2018-01-01
    “…A method for the quantitative determination of dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), bis(2-ethylhexyl) adipate (DEHA), bis(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate (DNOP), dioctyl terephthalate (DOTP), diisononyl phthalate (DINP), and diisodecyl phthalate (DIDP) in medical infusion sets was developed and validated using gas chromatography coupled with triple quadrupole mass spectrometry (GC-MS/MS) in the multiple reaction monitoring (MRM) mode. …”
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  19. 599

    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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  20. 600

    Decolorization and Bioelectricity Generation from Palm Oil Mill Effluent by a Photosynthetic Bacterial Consortium by Pimprapa Chaijak, Alisa Kongthong

    Published 2025-01-01
    “…The degraded metabolites were analyzed by gas chromatography-mass spectrometry (GC-MS) after treatment. The results revealed that melanoidin was converted to 1-ethyl-2-methylbenzene, 1,2,4-trimethylbenzene, decamethylcyclopentasiloxane, dodecamethylcyclohexane, butylated hydroxytoluene, and stigmasta-3,5-diene. …”
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