Showing 481 - 500 results of 562 for search '"Gas Chromatography"', query time: 0.07s Refine Results
  1. 481

    Microstructural modifications in bitumens rejuvenated by oil from pyrolysis of waste tires by Michela Alfe, Valentina Gargiulo, Giovanna Ruoppolo, Francesco Cammarota, Pietro Calandra, Cesare Oliviero Rossi, Valeria Loise, Michele Porto, Roberto Di Capua, Paolino Caputo

    Published 2025-01-01
    “…The pyrolysis oil from WTs was produced and characterized using elemental analysis, gas chromatography coupled with mass spectrometry (GCMS), and thermogravimetry. …”
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    Article
  2. 482

    Characteristics and Source-specific Health Risks of Ambient PM2.5-bound PAHs in an Urban City of Northern Taiwan by Yu-Chieh Ting, Chun-Hung Ku, Yu-Xuan Zou, Kai-Hsien Chi, Jhy-Charm Soo, Chin-Yu Hsu, Yu-Cheng Chen

    Published 2023-08-01
    “…Fifteen PAHs in PM2.5 were analyzed via gas chromatography tandem mass spectrometry (GC/MS-MS). …”
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    Article
  3. 483

    Larvicidal Evaluation against Aedes aegypti and Antioxidant and Cytotoxic Potential of the Essential Oil of Tridax procumbens L. Leaves by Lethicia B. Brandão, Lizandra L. Santos, Rosany L. Martins, Alex B. L. Rodrigues, Erica de M. Rabelo, Allan K. R. Galardo, Sheylla S. M. da S. de Almeida

    Published 2021-01-01
    “…The antioxidant activity was evaluated by the sequestration method of 2,2-diphenyl-1-picrylhydrazyl radical, the cytotoxic activity was evaluated using Artemia salina, the larvicidal bioassay was performed with larvae in the third stage of development of the Aedes aegypti mosquito, and the identification of the metabolites was performed by gas chromatography coupled to the mass spectrometer (GC-MS). …”
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    Article
  4. 484

    Selection of an optimal method for screening the collection of narrow-leaved lupine held by the Vavilov Institute for the qualitative and quantitative composition of seed alkaloids by A. V. Kushnareva, Т. V. Shelengа, I. N. Perchuk, G. P. Egorova, L. L. Malyshev, Yu. A. Kerv, A. L. Shavarda, M. A. Vishnyakova

    Published 2020-12-01
    “…Qualitative and quantitative indices were compared when target compounds had been extracted with multicomponent mixtures and individual reagents (chloroform, methanol, etc.) and the extracts analyzed using gas chromatography-mass spectrometry. High-performance liquid chromatography combined with mass spectrometry was also employed. …”
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    Article
  5. 485

    Multianalytical Method Validation for Qualitative and Quantitative Analysis of Solvents of Abuse in Oral Fluid by HS-GC/MS by Bruna Claudia Coppe, Bruna Tassi Borille, Taís Regina Fiorentin, Ana Laura Bemvenuti Jacques, Ana Claudia Fagundes, Stela Maris de Jezus Castro, Lysa Silveira Remy, Flavio Pechansky, Renata Pereira Limberger

    Published 2016-01-01
    “…Thus, the present work aimed to develop and validate an analytical method for quantification and detection of solvents used as inhalants of abuse in oral fluid (OF), using Quantisal™ as collector device by headspace and gas chromatography coupled with a mass detector (HS-GC/MS). …”
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    Article
  6. 486

    Profiles of Killer Systems and Volatile Organic Compounds of Rowanberry and Rosehip-Inhabiting Yeasts Substantiate Implications for Biocontrol by Iglė Vepštaitė-Monstavičė, Juliana Lukša-Žebelovič, Violeta Apšegaitė, Raimondas Mozūraitis, Robertas Lisicinas, Ramunė Stanevičienė, Laima Blažytė-Čereškienė, Saulius Serva, Elena Servienė

    Published 2025-01-01
    “…The selected <i>H. uvarum</i>, <i>M. pulcherrima</i>, <i>S. cerevisiae</i>, and <i>S. paradoxus</i> yeast strains representing both berries were applied for VOC analysis and identification by gas chromatography-linked mass spectrometry. It was revealed that the patterns of emitted volatiles are yeast species-specific. …”
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    Article
  7. 487

    Nonspecific response of Lake Baikal phytoplankton to anthropogenic impact by A. A. Nikonova, S. S. Vorobyeva

    Published 2022-09-01
    “…Using the method of gas chromatography, we showed a lower (up to 15 %) content of polyunsaturated fatty acids in phytoplankton characterized by stress occurrence. …”
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    Article
  8. 488

    Occurrence and bioaccumulation of organophosphate flame retardants in high-altitude regions: A comprehensive field survey in Qinghai Province, China by Haibao Zhu, Jinlin Hu, Zheng Ruan, Danhua Liu, Meirong Zhao

    Published 2025-01-01
    “…Herein, a general pretreatment method for OPFRs across various sample matrices was established and combined with gas chromatography-mass spectrometry (GC-MS), utilizing a programmed temperature ramp in the vaporization chamber to enable high-throughput detection of OPFRs in various environmental matrices. …”
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    Article
  9. 489

    HEMPSEED AND COTTONSEED OILS IN THE ACCESSIONS FROM THE VIR COLLECTION AS SOURCES OF FUNCTIONAL FOOD INGREDIENTS by S. V. Grigoryev, T. V. Shelenga, K. V. Illarionova

    Published 2019-10-01
    “…The PUFA profile was measured using gas chromatography with mass spectrometry equipment (Agilent 6850, USA). …”
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    Article
  10. 490

    Comparing the Structural and Physicochemical Properties of Highland Barley <i>β</i>-Glucan from Different Sources: A Focus on Color by Ping Yu, Xuemin Kang, Pengfei Liu, Zhengzong Wu, Yue Cheng, Bo Cui, Wei Gao

    Published 2025-01-01
    “…The molecular weight (M<sub>w</sub>) of BBG, LBG, and WBG were 55.87 kDa, 65.19 kDa, and 81.59 kDa, respectively. 4-Glc(p), 3-Glc(p), and t-Glc(p) accounted for a larger proportion (>90%) of the total methylated residues according to gas chromatography–mass spectrometry (GC-MS) analysis. Additionally, Fourier transform infrared (FT-IR) spectroscopy revealed that the <i>β</i>-linkage of LBG had a greater capacity to develop stronger hydrogen bonds, due to the absence of 3,4-Glc(p). …”
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    Article
  11. 491

    Toxicity Assessment of the Xanthid Crab Demania cultripes from Cebu Island, Philippines by Manabu Asakawa, Gloria Gomez-Delan, Shintaro Tsuruda, Michitaka Shimomura, Yasuo Shida, Shigeto Taniyama, Mercy Barte-Quilantang, Jo Shindo

    Published 2010-01-01
    “…Toxin profiles as determined by high-performance liquid chromatography-fluorescent detection analysis (HPLC-FLD) revealed that TTX was the main toxic principle accounting for about 90% of the total toxicity along with 4-epi TTX and 4,9-anhydroTTX. Furthermore, gas chromatography-mass spectrometry (GC-MS) analysis revealed mass fragment ion peaks at m/z 376, 392 and 407, which were characteristic of the quinazoline skeleton (C9-base) specific to TTX. …”
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    Article
  12. 492

    Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty by Drenka Trivanović, Marko Vujačić, Aleksandra Arsić, Tamara Kukolj, Milica Rajković, Nikola Bogosavljević, Zoran Baščarević, Mirjana Maljković Ružičić, Jovana Kovačević, Aleksandra Jauković

    Published 2025-01-01
    “…BM, BMAT, and gfSAT were explored at the levels of total lipids, fatty acids, and cells by using thin-layerand gas chromatography, ex vivo cellular assays, and flow cytometry. …”
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    Article
  13. 493

    Comparative Analysis of Chemical Composition and Antibacterial Activity of Essential Oils from Five Varieties of <i>Lavender</i> Extracted via Supercritical Fluid Extraction by Lijing Lin, Zhencheng Lv, Meiyu Wang, Ankang Kan, Songling Zou, Bin Wu, Limin Guo, Salamet Edirs, Jiameng Liu, Lin Zhu

    Published 2025-01-01
    “…This study aimed to determine the chemical composition of five <i>Lavender</i> essential oils (LEOs) using the gas chromatography–mass spectroscopy technique and to assess their antibacterial activity against four marine <i>Vibrio</i> species, including <i>Shewanella algae</i>, <i>Shewanella maridflavi</i>, <i>Vibrio harveyi</i>, and <i>Vibrio alginolyticus</i>. …”
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  14. 494

    Saussurea gossypiphora extracts reduce inflammation by reversing inflammatory cytokine levels in in-vitro and in-vivo by Kalyani Jatoth, Pawan Kumar Anoor, Ramesh Kande, Sandeepta Burgula

    Published 2025-02-01
    “…Methods: The antioxidant activities of Methanolic extracts of flowers of Saussurea gossypiphora (MESGD) were examined using 1,1-diphenyl-2-picrylhydrazyl assay. Gas Chromatography Mass Spectrometric investigation revealed the presence of various bio-active constituents. …”
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    Article
  15. 495

    Determination of antioxidant and phytochemical properties of premix extract of brown macroalgae Padinaaustralis, Sargassum licifolium and Stoechospermum marginatum from Chabahar co... by Paria Akbary

    Published 2024-03-01
    “…Sterol was measured by gas chromatography, while phenol, flavonoids and antioxidant activity were measured by spectrophotometer. …”
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    Article
  16. 496
  17. 497

    Comprehensive Evaluation of Quality Characteristics and Processing Suitability of Different Varieties of Large-fruited Sea Buckthorn Juice from Xinjiang Using Multivariate Analysis... by Rong HAN, Yan MA, Yu AO, Ting ZHANG, Xintao MENG, Mingqiang XU, Yan PAN

    Published 2025-02-01
    “…This study assessed the quality characteristics juice and processing suitability of six varieties of large-fruited sea buckthorn juice from Xinjiang using gas chromatography-ion mobility spectroscopy (GC-IMS) and multivariate physicochemical analysis combined with correlation and principal component analysis. …”
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    Article
  18. 498

    Assessment of Volatile Chemical Composition of the Essential Oil of Jatropha ribifolia (Pohl) Baill by HS-SPME-GC-MS Using Different Fibers by Celia Eliane de Lara da Silva, Willian Ferreira da Costa, Sandro Minguzzi, Rogério Cesar de Lara da Silva, Euclésio Simionatto

    Published 2013-01-01
    “…The Clevenger extractor was utilized in hydrodistillation of oil and chemical composition determined by gas chromatography coupled with mass spectrometry detector (GC-MS). …”
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    Article
  19. 499

    Evaluation of Airborne Particulate Matter and Volatile Organic Compounds Released by Three Types of Mosquito Repellents by Soyeon Lee, Jongmin Park, Myoungho Lee, Minjung Kim, Boowook Kim, Kiyoung Lee, Kyungduk Zoh, Chungsik Yoon

    Published 2024-03-01
    “…PM was measured with a scanning mobility particle sizer (SMPS) and optical particle spectrometer (OPS) in an exposure chamber; VOCs were collected with Tenax TA and analyzed by gas chromatography-mass spectrometry. SMPS measurements in the range of 10–420 nm showed that the coil-types had the highest concentration (13,048 particles cm‒3), followed by the mat-types (119 particles cm‒3), and liquid-types (42 particles cm‒3). …”
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  20. 500

    Study on exhaled volatile organic compounds identifying cognitive fatigue induced by N-back task in healthy young adults by Xiaoyu Zhang, Xiaoyan Dong, Qiang Huang, Zhe Liu, Qin Wang

    Published 2025-01-01
    “…Exhaled VOCs were collected and detected using a Bio-VOC sampler and Thermal Desorption Gas Chromatography-Mass Spectroscopy method. The differences in exhaled VOCs between the pre- and post-induction and film watching was evaluated using either the paired t-test or the Wilcoxon signed-rank test. …”
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