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7501
The Relationship of Maternal Gestational Mass Spectrometry-Derived Metabolites with Offspring Congenital Heart Disease: Results from Multivariable and Mendelian Randomization Analy...
Published 2022-07-01“…We sought validation of our findings, by repeating the multivariable regression analysis within the BiB cohort for any suggestively associated metabolite that was measured by nuclear magnetic resonance (NMR) or clinical chemistry (N = 7296, 87 CHD cases), and by using genetic risk scores (GRS: weighted genetic risk scores of single nucleotide polymorphisms (SNPs) that were associated with any suggestive metabolite) in Mendelian randomization (MR) analyses. …”
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7502
Modelling and correcting the impact of RF pulses for continuous monitoring of hyperpolarized NMR
Published 2023-07-01“…<p>Monitoring the build-up or decay of hyperpolarization in nuclear magnetic resonance requires radio-frequency (RF) pulses to generate observable nuclear magnetization. …”
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7503
Untargeted metabolomics identified kynurenine as a predictive prognostic biomarker in acute myocardial infarction
Published 2022-11-01“…This study aimed to evaluate the prognostic value of metabolomics-based biomarkers in STEMI patients and explore their functional mechanisms.MethodsMetabolite profiling was performed using nuclear magnetic resonance. The plasma concentration of Kynurenine (Kyn) was measured using ultraperformance liquid chromatography/electrospray ionization quadruple time-of-flight mass spectrometry. …”
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7504
Synthesis, Characterization, and Proton Conductivity of Muconic Acid-Based Polyamides Bearing Sulfonated Moieties
Published 2023-11-01“…Fourier transform infrared spectroscopy (<i>FTIR</i>) and nuclear magnetic resonance (<sup>1</sup>H, <sup>13</sup>C, and <sup>19</sup>F-<i>NMR</i>) techniques were used to confirm the chemical structures of the new polyamides. …”
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7505
New Insights into the Identification of Metabolites and Cytokines Predictive of Outcome for Patients with Severe SARS-CoV-2 Infection Showed Similarity with Cancer
Published 2023-03-01“…We evaluated untargeted plasma metabolomics and cytokine profiling via <sup>1</sup>H-NMR (proton nuclear magnetic resonance) and multiplex Luminex assay, respectively, in a training set of a limited number of patients with severe SARS-CoV-2 infection classified on the basis of their outcome. …”
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7506
Identification of drought-responsive phenolic compounds and their biosynthetic regulation under drought stress in Ligularia fischeri
Published 2023-02-01“…We chromatographically isolated and identified two anthocyanins and two flavones upregulated by drought stress using liquid chromatography-mass spectrometry and nuclear magnetic resonance analyses in this plant for the first time. …”
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7507
A novel type of neural networks for feature engineering of geological data: Case studies of coal and gas hydrate-bearing sediments
Published 2020-09-01“…The coal samples used in the experiments underwent nuclear magnetic resonance (NMR) measurements, and Scanning Electron Microscopy (SEM) imaging to investigate their original micro and macro fractures. …”
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7508
Varying Synthesis Conditions and Comprehensive Characterization of Fluorine-Doped Hydroxyapatite Nanocrystals in a Simulated Body Fluid
Published 2022-01-01“…XRD and HRTEM were employed to confirm the composition and structure, while various multinuclear (<sup>1</sup>H, <sup>19</sup>F, <sup>31</sup>P) solid-state nuclear magnetic resonance (NMR) methods including 1D single pulse, cross-polarization under magic-angle spinning (CPMAS), and 2D heteronuclear correlation (HETCOR) were used to characterize the structure, morphology, and dynamics, validating the general core-shell morphology in these F-HAp samples. …”
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7509
Lipoprotein profiles of fat distribution and its association with insulin sensitivity
Published 2022-10-01“…Lipoprotein particle composition in relation to WHR and to what extent their association is mediated by insulin sensitivity are less investigated.MethodsIn 504 randomly recruited Flemish (mean age: 48.9 years; women: 51.6%), we analyzed the lipoprotein particle constitutions using nuclear magnetic resonance spectroscopy. WHR obesity described a WHR of ≥ 0.85 for women or 0.9 for men. …”
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7510
A Multimethodological Characterization of <i>Cannabis sativa</i> L. Inflorescences from Seven Dioecious Cultivars Grown in Italy: The Effect of Different Harvesting Stages
Published 2021-05-01“…The chemical profile of the female inflorescence extracts from seven <i>Cannabis sativa</i> L. dioecious cultivars (Carmagnola, Fibranova, Eletta Campana, Antal, Tiborszallasi, Kompolti, and Tisza) was monitored at three harvesting stages (4, 14, and 30 September), reaching from the beginning of flowering to end of flowering/beginning of seed formation, using untargeted nuclear magnetic resonance (NMR) and targeted (ultra-high-performance liquid chromatography (UHPLC) and spectrophotometry) analyses. …”
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7511
Isolation, Characterization and Anticancer Activity of Two Bioactive Compounds from <i>Arisaema flavum</i> (Forssk.) Schott
Published 2022-11-01“…The fraction indicating maximum activity was then taken for isolation of bioactive compounds using various chromatographic and spectroscopic techniques such as column chromatography, thin-layer chromatography (TLC), gas chromatography–mass spectrometry (GC-MS), Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance spectroscopy (NMR). Crude extract of <i>Arisaema flavum</i> (Forssk.), as well as various fractions extracted in different solvents such as n-hexane, chloroform and ethyl acetate, were tested against human breast cancer cell line MCF-7 using an MTT assay. …”
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7512
Chemical Constituents from Euphorbia kansui
Published 2017-12-01“…Their structures were elucidated based on High resolution electrospray ionization mass spectrometry (HR-ESI-MS), Infrared Spectroscopy (IR), 1D and 2D Nuclear Magnetic Resonance (NMR) data. Both constituents 1 and 2 exhibited moderate cytotoxicity against colon cancer HCT-116, gastric cancer MKN-45 and breast cancer MCF-7.…”
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7513
Tc-99m-tamoxifen: A novel diagnostic imaging agent for estrogen receptor-expressing breast cancer patients
Published 2022-05-01“…The site of binding of Tc-99m-tricarbonyl with tamoxifen was determined by proton nuclear magnetic resonance. The Tc-99m-tamoxifen showed 30% binding with MCF-7 and only 1%-2% receptor binding with MDA-MB-231 cell lines. …”
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7514
Synthesis and Application of UV-curable Phosphorous-containing Acrylated Epoxidized Soybean Oil-based Resins
Published 2019-08-01“…The chemical structure was characterized by Fourier transform infrared spectroscopy (FT-IR), and 1H nuclear magnetic resonance (1H NMR). Subsequently, the viscosity and volumetric shrinkage of the obtained P-AESO resins were studied. …”
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7515
Genetic Deletion of DNAJB3 Using CRISPR-Cas9, Produced Discordant Phenotypes
Published 2023-09-01“…Body composition was determined monthly by nuclear magnetic resonance (NMR). Following euthanasia, white adipose tissue (WAT) and skeletal muscle were harvested for further analyses. …”
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7516
Mitochondria-Targeting Polymer Micelles in Stepwise Response Releasing Gemcitabine and Destroying the Mitochondria and Nucleus for Combined Antitumor Chemotherapy
Published 2022-10-01“…In this study, a new mitochondria-targeting pH/ROS dual-responsive block copolymer TPP-PEG2k-<i>b</i>-(BS-AA)<sub>n</sub> (P1), untargeted pH/ROS dual-responsive copolymer mPEG2k-<i>b</i>-(BS-AA)<sub>n</sub> (P2), pH single-responsive copolymer (mPEG2k-<i>b</i>-(AH-AA)<sub>n</sub> (P3), ROS single-responsive copolymer mPEG2k-<i>b</i>-(SA-TG)<sub>n</sub> (P4), and non-responsive copolymer mPEG-<i>b</i>-PCL (P5) were constructed. pH/ROS-responsive properties were characterized by proton nuclear magnetic resonance (<sup>1</sup>H NMR) and dynamic light scattering (DLS). …”
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7517
Multi-scale pore structure transformation of shale under mixed acid acidification method
Published 2023-08-01“…The mineral fractions and pore structures of the samples were then analyzed using scanning electron microscopy-energy dispersive spectrometry, X-ray diffraction, low-pressure nitrogen adsorption, and nuclear magnetic resonance. The results showed that by reducing the mineral constituents of shale, the 2–15-nm sized pores decreased, 1–10-μm sized pores increased, and fractal dimensions decreased. …”
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7518
Sequential extraction, structural characterization, and antioxidant activity of polysaccharides from Dendrocalamus brandisii bamboo shoot shell
Published 2023-03-01“…Both PH1 and PH4 were found to contain 1,4-β-d-Xylp as their main chain, as determined by nuclear magnetic resonance (NMR) spectroscopy. Additional research into CA and SC's antioxidant potential is required since they both showed potent in vitro antioxidant activities.…”
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7519
Interaction of the anion [2-B<sub>10</sub>H<sub>9</sub>O(CH<sub>2</sub>)<sub>4</sub>O]− with secondary amines
Published 2022-11-01“…The general control of the reactions of the disclosure of cyclic substituents was carried out on the basis of 11B nuclear magnetic resonance (NMR) spectroscopy data. The structure of the obtained derivatives, including the nature of the attached functional groups, was determined using 1H, 13C attached proton test (APT) NMR and infrared (IR) spectroscopy data. …”
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7520
Bioassay-Guided Chemical Study of the Anti-Inflammatory Effect of Senna villosa (Miller) H.S. Irwin & Barneby (Leguminosae) in TPA-Induced Ear Edema
Published 2014-07-01“…It was chemically characterized using mass spectrometry and infrared and nuclear magnetic resonance spectroscopy, resulting in a mixture of three aliphatic esters, which were identified as the principal constituents: hexyl tetradecanoate (C20H40O2), heptyl tetradecanoate (C21H42O2) and octyl tetradecanoate (C22H44O2). …”
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