Showing 961 - 980 results of 1,810 for search '"Mass spectrometry"', query time: 0.06s Refine Results
  1. 961

    Detection of HIV-1 and Human Proteins in Urinary Extracellular Vesicles from HIV+ Patients by Samuel I. Anyanwu, Akins Doherty, Michael D. Powell, Chamberlain Obialo, Ming B. Huang, Alexander Quarshie, Claudette Mitchell, Khalid Bashir, Gale W. Newman

    Published 2018-01-01
    “…EVs were isolated by ultrafiltration and characterized using transmission electron microscopy, tandem mass spectrometry (LC/MS/MS), and nanoparticle tracking analysis (NTA). …”
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    Article
  2. 962

    Antihuman Immunodeficiency Virus Type 1 (HIV-1) Activity of Rare Earth Metal Complexes of 4-Hydroxycoumarins in Cell Culture by Ilia Manolov, Sevda Raleva, Petya Genova, Alexey Savov, Liliana Froloshka, Daniela Dundarova, Radka Argirova

    Published 2006-01-01
    “…The complexes were characterized by different physicochemical methods: mass spectrometry, ¹H NMR, ¹³C NMR, and IR spectroscopy. …”
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    Article
  3. 963

    Branched-Chain Amino Acid (BCAA) Oligopeptide Determination from Whey Proteins: Preparation, Peptide Profiles, and Anti-Fatigue Activity by Qiong Zhu, Renjie Zhou, Xiping Zhu, Xiangru Lu, Binli Ai, Qibin Zhuang, Chun Cui

    Published 2024-12-01
    “…Fraction D’ was found to contain the highest content of BCAAs and a high proportion of low-molecular-weight peptides (<1 kDa; content: 81.48%). Subsequently, mass spectrometry identified 15 BCAA oligopeptides in Fraction D’, including three dipeptides, six tripeptides, two tetrapeptides, and four pentapeptides. …”
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    Article
  4. 964

    Multiomics-based assessment of the impact of airflow on diverse plant callus cultures by June-Sik Kim, Muneo Sato, Mikiko Kojima, Muchamad Imam Asrori, Yukiko Uehara-Yamaguchi, Yumiko Takebayashi, Thi Nhung Do, Thi Yen Do, Kieu Oanh Nguyen Thi, Hitoshi Sakakibara, Keiichi Mochida, Shinjiro Ogita, Masami Yokota Hirai

    Published 2025-02-01
    “…For each sample, gene expression was profiled with high-throughput RNA sequencing, 442 metabolites were measured using liquid chromatography (LC) with triple-quadrupole mass spectrometry (LC–QqQMS), and 31 phytohormones were quantified using ultra-performance LC coupled with a tandem quadrupole mass spectrometer equipped with an electrospray interface (UPLC-ESI-qMS/MS) and ultra-high-performance LC–orbitrap MS (UHPLC-Orbitrap MS). …”
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    Article
  5. 965

    Chemical Constituent and Antioxidant Activity of Clove (Syzygium aromaticum) Bud and Leaf Essential Oils from Bali by I Wayan Muderawan, Pande Putu Diah Suci Laksmi, I Wayan Mudianta, Ni Wayan Martiningsih

    Published 2025-01-01
    “…The constituents of the clove essential oils were analyzed by using gas chromatography-mass spectrometry (GC-MS). Thirty-six and twenty-nine constituents were identified based on GC-MS from the clove bud and leaf essential oils, respectively. …”
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    Article
  6. 966

    Simultaneous Determination of Five Components of Chaihu-Shugan-San in Beagle Plasma by HPLC-MS/MS and Its Application to a Pharmacokinetic Study after a Single Dose of Chaihu-Shuga... by Yong-liang Zhu, Hui-jun Wang, Hao Xue, Yi Zhang, Qian-shi Cheng, Ling-yun Chen, Xiang-jun Qiu

    Published 2020-01-01
    “…The purpose of our study is to develop a reliable and sensitive high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method to detect five components in beagle plasma and study their pharmacokinetic after oral administration of CHSGS in beagles. …”
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    Article
  7. 967

    Electrophysiological and Behavioral Responses of <i>Orchestes steppensis</i> (Coleoptera: Curculionidae) to <i>Ulmus</i> Plant Volatiles by Meng Yang, Qin Li, Guoshuai Zhao, Yalin Liu, Yonggen Lou

    Published 2024-12-01
    “…Volatile organic compounds from the leaves of the three <i>Ulmus</i> species were collected using dynamic headspace adsorption and analyzed through gas chromatography–mass spectrometry (GC-MS). A total of 94 volatile components in the healthy leaves and the infested leaves by <i>O. steppensis</i> of the three elm species were identified and analyzed, and 13 active compounds were identified using coupled gas chromatography–electroantennographic (GC-EAD) recording and GC-MS analysis. …”
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    Article
  8. 968

    Thermal Decarboxylation of Betacyanins in Red Beet Betalain-Rich Extract by Agnieszka Kumorkiewicz, Katarzyna Sutor, Boris Nemzer, Zbigniew Pietrzkowski, Sławomir Wybraniec

    Published 2020-02-01
    “…The first tentative structures formed by decarboxylation of the main pigment present in BRE, betanin and its diastereomer, were established by means of liquid chromatography coupled to diode array detection and electrospray ionization tandem mass spectrometry (LC-DAD-ESI-MS/MS). In the extract, two new isomeric bidecarboxylated betanins were tentatively identified. …”
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    Article
  9. 969

    Comparative Pharmacokinetic Studies of Four Ginsenosides in Rat Plasma by UPLC-MS/MS after Oral Administration of Panax quinquefolius-Acorus gramineus and Panax quinquefolius Extra... by Hailong Xie, Dongxue Wang, Wenjun Zhang, Xinjia Yan, Ying Zhao

    Published 2019-01-01
    “…In the present study, we simultaneously determined the contents of four main bioactive ginsenosides (Rb1, Rb2, Rd, and Re) in rat plasma using an ultrahigh-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method. Plasma specimens were purified by using the solid-phase extraction procedure, and separation was performed on Waters ACQUITY UPLC BEH C18 (100 mm × 2.1 mm, 1.7 μm) in multiple reaction monitoring (MRM) mode and negative electrospray ionization (ESI) mode. …”
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    Article
  10. 970

    A pilot exploratory study for analysis of clinical features and plasma catecholamines in blepharospasm by Lixia Zhu, Hongmei Meng, Wuqiong Zhang, Lijuan Wang, Weixuan Zhao, Jiaai Li, Nilupaer Shafeng, Huaiyu Sun, Ting Jiang, Huiqing Liu, Yu Guo, Shuai Hou

    Published 2025-01-01
    “…Plasma CA levels were measured using liquid chromatography-tandem mass spectrometry. Clinical features, plasma CAs, and metabolite contents were compared between groups. …”
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    Article
  11. 971

    Multidimensional library for the improved identification of per- and polyfluoroalkyl substances (PFAS) by Kara M. Joseph, Anna K. Boatman, James N. Dodds, Kaylie I. Kirkwood-Donelson, Jack P. Ryan, Jian Zhang, Paul A. Thiessen, Evan E. Bolton, Alan Valdiviezo, Yelena Sapozhnikova, Ivan Rusyn, Emma L. Schymanski, Erin S. Baker

    Published 2025-01-01
    “…Using a platform coupling reversed-phase liquid chromatography (RPLC), electrospray ionization (ESI) or atmospheric pressure chemical ionization (APCI), drift tube ion mobility spectrometry (IMS), and mass spectrometry (MS), the retention times, collision cross section (CCS) values, and m/z ratios were determined for all analytes and assembled into an openly available multidimensional dataset. …”
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    Article
  12. 972

    Anaplasma phagocytophilum AFAP targets the host nucleolus and inhibits induced apoptosis by Daxiu Zhang, Lifeng Yu, Hui Tang, Hua Niu, Hua Niu, Hua Niu

    Published 2025-01-01
    “…A total of 586 host proteins were identified interacting with AFAP by data-independent acquisition mass spectrometry and annotated to 501 Gene Ontology (GO) terms, with the significantly over-represented ones related to ribosomes, nucleolus, DNA binding, and rRNA metabolic process. …”
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    Article
  13. 973

    GC-MS Analysis, Antimicrobial and Antioxidant Activities of Extracts of the Aerial Parts of <i>Conyza sumatrensis</i> by Olapeju O Aiyelaagbe, Stephen O Oguntoye, Abdulmumeen A Hamid, Adebola M Ogundare, David B Ojo, Ajibola Ajao, Nurudeen O Owolabi

    Published 2016-05-01
    “…The extracts were also analysed using Gas chromatography – Mass spectrometry, and the chromatogram coupled with mass spectra of the compounds were matched with a standard library. …”
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    Article
  14. 974

    Small open reading frames (sORFs): Driving big improvements in plant development and quality by Kui Dong, Chaofan Shan, Dongyu Wen, Zifan Cui, Jun Cao

    Published 2025-03-01
    “…With the advent of sophisticated technologies such as bioinformatics, ribosome profiling, and mass spectrometry, the investigation of sORFs has experienced a transformative shift and significant expansion. …”
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    Article
  15. 975

    Site-specific N-glycosylation characterization and allergenicity analysis of globulin-1 S allele from wheat by Linglin Fu, Rongrong Wang, Jinru Zhou, Chong Wang, Yanbo Wang

    Published 2023-09-01
    “…Moreover, one N-glycosylation site and 6 kinds of N-glycans were identified by mass spectrometry, including 3 high mannose types and 3 complex types. …”
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    Article
  16. 976

    Understanding the impacts of dual methionine oxidations in complementarity-determining regions on the structure of monoclonal antibodies by Bo Zhao, Joy Yoon, Bojie Zhang, Youmi Moon, Yue Fu, Yinyin Li, Yunlong Zhao, Hui Xiao, Ning Li

    Published 2024-12-01
    “…In this study, we used hydrogen deuterium exchange mass spectrometry (HDX-MS) and homology modeling to investigate the effects of dual methionine oxidations (heavy chain (HC) Met111 and Met115) within a single CDR on the structure of a mAb. …”
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    Article
  17. 977

    Optimization of Enzymatic Hydrolysis Process of Morchella esculenta and Analysis of Volatile Flavor Compounds in Enzymatic Hydrolysate by Xiaofeng ZENG, Mi YAN, Zhixing GE, Lunjiang GAO, Xumin YIN, Yuan DIAO, Sang SHANG, Shunde ZENG

    Published 2025-02-01
    “…To optimize the enzymatic hydrolysis process of Morchella esculenta and expore the volatile flavor compounds in its enzymatic hydrolysate, the enzymatic hydrolysis was optimized by response surface design, and the key flavor compounds were identified by headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) combined with the odor activity value (OAV). …”
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    Article
  18. 978

    Synthesis and structural insights of bis(2-methoxy-6-{[(2-methylpropyl)imino]methyl}phenolato) nickel (II) complex through DFT and docking investigations by K. Jayachandiran, Sv. Esha, M. Savitha Lakshmi, S. Mahalakshmi, S. Arockiasamy

    Published 2025-01-01
    “…It was characterised by single crystal X-ray diffraction (ScXRD), UV-Vis, NMR, IR, mass spectrometry, and thermogravimetry (TG) to study its structure and physico-chemical properties. …”
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    Article
  19. 979

    Identification of Oligopeptides in the Distillates from Various Rounds of Soy Sauce-Flavored Baijiu and Their Effect on the Ester–Acid–Alcohol Profile in Baijiu by Qiang Wu, Shanlin Tian, Xu Zhang, Yunhao Zhao, Yougui Yu

    Published 2025-01-01
    “…Liquid chromatography–tandem mass spectrometry (LC-MS) was employed to identify endogenous peptides in the distillates from the first to seventh rounds of soy sauce-flavored Baijiu. …”
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    Article
  20. 980

    Orthogonal Design Study on Factors Affecting the Determination of Common Odors in Water Samples by Headspace Solid-Phase Microextraction Coupled to GC/MS by Shifu Peng, Zhen Ding, Weiwen Xia, Hao Zheng, Yuting Xia, Xiaodong Chen

    Published 2013-01-01
    “…These two odorants have extremely low odor threshold concentrations at ng L−1 level in the water, so a simple and sensitive method for the analysis of such trace levels was developed by headspace solid-phase microextraction coupled to gas chromatography/mass spectrometry. In this study, the orthogonal experiment design L32 (49) was applied to arrange and optimize experimental conditions. …”
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    Article