Showing 1,301 - 1,320 results of 1,810 for search '"Mass spectrometry"', query time: 0.14s Refine Results
  1. 1301

    Assessment of aluminium level in commercial pasteurized and UHT milk in Bangladesh and their potential health risks by Ishrat Jahan, Kazi Md. Al-Noman, Shabbir Ahmed, Mst. Umme Habiba, S. A. Masudul Hoque, Abu Sadeque Md. Selim, Md. Morshedur Rahman

    Published 2025-03-01
    “…This study aimed to measure Al concentrations in these processed products using inductively coupled plasma mass spectrometry (ICP-MS) and assess the associated health risks. …”
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  2. 1302

    Metabolomic approach to investigate <i>Dactylis glomerata</i> L. from the VIR collection by N. Yu. Malysheva, T. V. Shelenga, A. E. Solovyeva, T. B. Nagiev, N. V. Kovaleva, L. L. Malyshev

    Published 2023-04-01
    “…The study was carried out using gas-liquid chromatography coupled with mass spectrometry. The study and comparison of groups of metabolites of cocksfoot accessions of various ecological and geographical origin was carried out. …”
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  3. 1303

    A novel mode of histone-like protein HupB regulating Sinorhizobium meliloti cell division through lysine acetylation by Ningning Li, Huibo Jin, Hongbo Li, Huilin Yu, Xiaoxu Wu, Tianci Zhang, Liangliang Yu, Zhaoling Qin, Li Luo

    Published 2025-01-01
    “…Lys3, Lys13, and Lys83 in HupB were identified as acetylated residues by mass spectrometry. Mutating these residues to arginine (stimulating non-acetylation) in HupB impedes normal cell division, while substituting them with glycine (mimicking acetylation) allows for rapid cell duplication. …”
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  4. 1304

    In Vitro Biological and GC-MS Analysis of Whole Plant Calotropis procera by Qahir Shah, Jahangir Khan Achakzai, Muhammad Anwar Panezai, Basira Akhtar, Abdul Manan Kakar, Ali Akbar, Shahabuddin Kakar, Nisar Ahmed Shahwani, Javed Khan, Nazima Yousaf Khan, Ghulam Mustafa Khan, Nizam Baloch, Bakht Zareen Rahim, Noor Hassan

    Published 2024-01-01
    “…MTT assay, antileishmanial bioassay, microplate Alamar Blue assay, agar tube dilution method, oxidative burst assay using chemiluminescence technique, B-hatching techniques, and triple quadrupole acquisition method MS parameters were the methods used for anticancer, antileishmanial, antibacterial, antifungal, anti-inflammatory, brine shrimp lethality assay, and gas chromatography-mass spectrometry. Whole plant methanol extract of Calotropis procera (WMECP) inhibited 69.1% of the growth of HeLa cell line with an IC50 value of 3.1 ± 0.4 and whole plant n-hexane fraction of Calotropis procera (WHFCP) and whole plant and aqueous fraction of Calotropis procera (WAFCP) inhibited the growth by 70.2% and 65.2% with IC50 values of 5.0 ± 0.3 and 17.1 ± 1.0. …”
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  5. 1305

    Hybrid Carbohydrate–Lipid Nanocarriers: In Vitro Efficacy Gene-Rated by Association of UV-Absorbers and Raspberry Polyphenols Rich-Fraction by Nicoleta Badea, Diego Samayoa, Alina Moroşan, Cristina Ott, Ioana Lacatusu

    Published 2024-12-01
    “…<b>Methods</b>: Quality and quantitative attributes of classic- and HA-NLC have been assigned based on particle size, electrokinetic potential, encapsulation efficiency, spectroscopic characteristics, and high-resolution mass spectrometry. To establish the performance profile of antioxidant activity, release of active substances, sun blocking action, and photostability, in vitro studies were conducted. …”
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  6. 1306

    Metabolites Profiling of Soil Actinomycetes with Antimicrobial and Anticancer Activities by Ram Prabodh Yadav, Bibek Raj Bhattarai, Rabin Budhathoki, Padamlal Budthapa, Monika Rana, Rubin Thapa Magar, Bijaya Bahadur Thapa, Akkal Dev Mishra, Niranjan Parajuli

    Published 2024-12-01
    “…Gas Choursomatography-Mass Spectrometry (GC-MS) analysis revealed particularly volatile chemical constituents in the extracts. …”
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  7. 1307

    Chemical Constituents and Combined Larvicidal Effects of Selected Essential Oils against Anopheles cracens (Diptera: Culicidae) by Jitrawadee Intirach, Anuluck Junkum, Benjawan Tuetun, Wej Choochote, Udom Chaithong, Atchariya Jitpakdi, Doungrat Riyong, Daruna Champakaew, Benjawan Pitasawat

    Published 2012-01-01
    “…Chemical compositions analyzed by gas chromatography coupled to mass spectrometry demonstrated that the main component in the oil derived from P. sarmentosum, F. vulgare, C. longa, M. fragrans, and Z. piperitum was croweacin (71.01%), anethole (63.00%), ar-turmerone (30.19%), safrole (46.60%), and 1,8-cineole (21.27%), respectively. …”
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  8. 1308

    Ossification Vesicles with Calcium Phosphate in the Eyes of the Insect Copium teucrii (Hemiptera: Tingidae) by Javier Garcia-Guinea, Alberto Jorge, Laura Tormo, Marta Furio, Elena Crespo-Feo, Virgilio Correcher, Pedro Prado-Herrero, Ana C. Soria, Jesus Sanz, Jose L. Nieves-Aldrey

    Published 2011-01-01
    “…The chemical composition of both galls and leaves of T. gnaphalodes was determined by gas chromatography – mass spectrometry (GC-MS) of their extracts. The spectrometric and microscopic images reveal that the calcium-phosphate mineralization is formed and constrained to Copium ommatidia, which are both matrix vesicles generating mixtures of apatite collagen and operational compound eyes of the insect.…”
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  9. 1309

    BTEX Exposure Assessment and Inhalation Health Risks to Traffic Policemen in the Klang Valley Region, Malaysia by Noor Fatihah Mohamad Fandi, Juliana Jalaludin, Mohd Talib Latif, Haris Hafizal Abd Hamid, Mohd Fairus Awang

    Published 2020-06-01
    “…Air samples were collected with low-flow personal samplers during the officers’ work shifts outdoors, and the BTEX content was then analyzed via gas chromatography-mass spectrometry (GC-MS) coupled with thermal desorption (TD). …”
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  10. 1310

    Quantitative Detection of Zinc Oxide Nanoparticle in Environmental Water by Cloud Point Extraction Combined ICP-MS by Yuan Yang, Xin Liu, Lin Luo, Wenjing Wei, Qiang Wang, Jiachao Zhang

    Published 2021-01-01
    “…In this study, a quantitative analytical method of ZnONPs in environmental waters was developed by cloud point extraction (CPE) combined inductively coupled plasma mass spectrometry (ICP-MS). To obtain high recoveries of ZnONPs, the CPE parameters including pH, surfactant concentration, salt concentration, bath temperature, and time were optimized. …”
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  11. 1311

    Synthesis of Mannich N-bases based on benzimidazole derivatives using SiO2OAlCl2 catalyst and their potential as antioxidant, antibacterial, and anticancer agents by Antonius Herry Cahyana, Ikrimah Desta, Laely Amaliyah, Aida Nadia, Hilna Diana Sahaya, Dicky Annas, Bayu Ardiansah, Mohammad Jihad Madiabu, Inda Mapiliandari, Kang Hyun Park

    Published 2025-01-01
    “…The purity of the synthesized compounds was monitored by Thin layer chromatography (TLC), melting point test, Ultraviolet-visible (UV–Vis), and Liquid chromatography-Mass spectrometry (LC-MS). The five intermediate compounds and five mannich base products yield 77 %-89 % and 65 %-85 %, respectively. …”
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  12. 1312

    Characterizing Industrial VOC Hotspots in One of Eastern China’s Largest Petrochemical Parks Using Mobile PTR–ToF–MS Measurements by Jie Fang, Zihang Zhang, Zeye Liang, Ming Wang, Yunjiang Zhang, Xinlei Ge

    Published 2025-01-01
    “…In this study, we employed mobile proton transfer reaction–time-of-flight–mass spectrometry (PTR–ToF–MS) to identify and characterize industrial VOC hotspots in a petrochemical park in eastern China, from June to September 2021. …”
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  13. 1313

    Untargeted metabolomics analysis of glycerophospholipid metabolism in very low birth weight infants administered multiple oil lipid emulsions by Xiaoyan Zeng, Tao Yu, Luping Xia, Zhiqiang Ruan

    Published 2024-12-01
    “…An untargeted metabolomics analysis was conducted on serum samples using Ultra-high Performance Liquid Chromatography - Tandem Mass Spectrometry (UHPLC-MS/MS). Differential metabolites were identified using Orthogonal Partial Least Squares Discriminant Analysis (OPLS-DA) modeling, with criteria of variable importance in the projection (VIP) > 1 and false discovery rate (FDR) < 0.05. …”
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  14. 1314

    Analysis of Biomolecular Changes in HeLa Cervical Cancer Cell Line Induced by Interaction with [Pd(dach)Cl<sub>2</sub>] by Vanja Ralić, Maja D. Nešić, Tanja Dučić, Milutin Stepić, Lela Korićanac, Katarina Davalieva, Marijana Petković

    Published 2025-01-01
    “…Although a certain level of lipid peroxidation was detectable by SR FTIR spectroscopy and confirmed by an analysis of cellular lipids by matrix-assisted laser desorption and ionisation time-of-flight mass spectrometry, the oxidative stress is not a significant mechanism by which Pd(II) expresses the effect on the HeLa cells.…”
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  15. 1315

    Antioxidant and Chelating Activity of Nontoxic Jatropha curcas L. Protein Hydrolysates Produced by In Vitro Digestion Using Pepsin and Pancreatin by Santiago Gallegos Tintoré, Cristina Torres Fuentes, Javier Solorza Feria, Manuel Alaiz, Julio Girón Calle, Alma Leticia Martínez Ayala, Luis Chel Guerrero, Javier Vioque

    Published 2015-01-01
    “…Peptidic fractions with higher radical scavenging activity were analysed by matrix-assisted laser desorption/ionization mass spectrometry. The antioxidant activity was determined by measuring inhibition of the oxidative degradation of β-carotene and by measuring the reactive oxygen species (ROS) in Caco-2 cell cultures. …”
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  16. 1316

    Identification of Potential Serum Metabolic Biomarkers of Diabetic Kidney Disease: A Widely Targeted Metabolomics Study by Hang Zhang, Jing-jing Zuo, Si-si Dong, Yuan Lan, Chen-wei Wu, Guang-yun Mao, Chao Zheng

    Published 2020-01-01
    “…The ultraperformance liquid chromatography-electrospray ionization-tandem mass spectrometry system was applied for the assessment of the serum metabolic profiles. …”
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  17. 1317

    Bile acids in the lower airways is associated with airway microbiota changes in chronic obstructive pulmonary disease: an observational study by Peter A B Wark, Siobhain Mulrennan, Stephen Stick, Yuben P Moodley, Kristy S Nichol, Jose A Caparros-Martin, Montserrat Saladié, S Patricia Agudelo-Romero, F Jerry Reen, Fergal O’Gara

    Published 2024-12-01
    “…BAs were profiled and quantified in BAL supernatants using mass spectrometry. Microbial DNA was extracted from BAL pellets and quantified using quantitative PCR. …”
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  18. 1318

    Complement classical and alternative pathway activation contributes to diabetic kidney disease progression: a glomerular proteomics on kidney biopsies by Yang Yang, Ying Zhang, Yuan Li, Xinjin Zhou, Kazuho Honda, Dedong Kang, Muxi Wang, Jing-Hua Yang, Zongping Xia, Yuan Wei, Lu Liu, Ruimin Hu, Takashi Takaki, Guolan Xing

    Published 2025-01-01
    “…In this study, the glomerular proteome, especially the profiles of the complement proteins, was analyzed in kidney biopsies from 40 DKD patients and 10 normal controls using laser microdissection-assisted liquid chromatography-tandem mass spectrometry (LMD-LC-MS/MS). The glomerular abundances of three proteins related to classical pathway (CP) (C1q, C1r, C1s), five proteins related to alternative pathway (AP) (CFB, CFH, CFHR1, CFHR3, CFHR5), one common protein related to CP and lectin pathway (LP) (C4), and six proteins related to terminal complement pathway (C3, C5, C6, C7, C8, C9) were significantly increased in DKD. …”
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  19. 1319

    Nisin Z Production by Wild Strains of Lactococcus lactis Isolated from Brazilian (Italian Type) Fermented Sausage by Margarete Alice Fontes Saraiva, Dagim Jirata Birri, Dag Anders Brede, Maria Cristina Baracat-Pereira, Marisa Vieira de Queiroz, Ingolf F Nes, Célia Alencar de Moraes

    Published 2020-01-01
    “…Ion exchange and reversed-phase chromatographies were used to purify the bacteriocins from culture supernatant of the five strains. Mass spectrometry (MALDI-TOF/TOF) showed that the molecular masses of the bactericoins from L. lactis ID1.5, ID3.1, ID8.5, PD4.7, and PR3.1 were 3330.567 Da, 3330.514 Da, 3329.985 Da, 3329.561 Da, and 3329.591 Da, respectively. …”
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  20. 1320

    FeO–alumina catalyst for reforming waste polyethylene terephthalate (PET) pyrolyzed products: synthesis, characterization, and performance evaluation by Audu, Ephraim Akuaden, Ade-Ajayi, Adebola Femi, Osigbesan, Aisha Ayoola, Gano, Zaharaddeen Sani, Barminas, Jeffrey Tsware

    Published 2024-11-01
    “…Fourier transform infrared analysis of the liquid products inferred peaks corresponding to aromatic and saturated hydrocarbons, which was confirmed by gas chromatography mass spectrometry analysis. Findings from this research demonstrated that the synthesized catalyst was able to reform waste PET pyrolyzed gas into valuable products, addressing environmental challenges and providing alternative energy sources.…”
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