Showing 3,021 - 3,040 results of 3,204 for search '"spectroscopy"', query time: 0.07s Refine Results
  1. 3021

    Neuroprotective Efficacy of <i>Astragalus mongholicus</i> in Ischemic Stroke: Antioxidant and Anti-Inflammatory Mechanisms by Yongjae Hong, Geon Ko, Yeong-Jae Jeon, Hyeon-Man Baek, Juni Lee, Donghun Lee, Jieun Park, Jaehong Kim, Keun-A Chang

    Published 2025-01-01
    “…Neuroprotective metabolites including inositol (Ins), glycerophosphocholine+phosphocholine (GPc+ PCh), N-acetylaspartate+N-acetylaspartylglutamate (NAA+NAAG), creatine + phosphocreatine (Cr+PCr), and glutamine+glutamate (Glx) were analyzed via magnetic resonance spectroscopy (MRS). Gliosis was assessed using GFAP and Iba-1 immunohistochemical markers, while neurological deficits were quantified with modified neurological severity scores (mNSS). …”
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  2. 3022

    Physical and Chemical Properties of Biodiesel Obtained from Amazon Sailfin Catfish (Pterygoplichthys pardalis) Biomass Oil by F. Anguebes-Franseschi, A. Bassam, M. Abatal, O. May Tzuc, C. Aguilar-Ucán, A. T. Wakida-Kusunoki, S. E. Diaz-Mendez, L. C. San Pedro

    Published 2019-01-01
    “…The physical and chemical properties of biofuel produced were evaluated under the specifications of the European standard EN-14214 by using gas chromatography-mass spectrometry, infrared spectroscopy, and atomic absorption spectrometry analyses. …”
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  3. 3023

    Optical detection of bond-dependent and frustrated spin in the two-dimensional cobalt-based honeycomb antiferromagnet Cu3Co2SbO6 by Baekjune Kang, Uksam Choi, Taek Sun Jung, Seunghyeon Noh, Gye-Hyeon Kim, Uihyeon Seo, Miju Park, Jin-Hyun Choi, Min Jae Kim, GwangCheol Ji, Sehwan Song, Hyesung Jo, Seokjo Hong, Nguyen Xuan Duong, Subhasis Samanta, Heung-Sik Kim, Tae Heon Kim, Yongsoo Yang, Sungkyun Park, Jong Mok Ok, Jung-Woo Yoo, Jae Hoon Kim, Changhee Sohn

    Published 2025-02-01
    “…First-principles spin Hamiltonian calculations and in-plane anisotropic critical fields suggest strong frustration and dominant Kitaev exchange interactions. Optical spectroscopy reveals exciton coupled to frustrated magnetism, enabling optical detection of spin states. …”
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  4. 3024

    Experimental identification of I-mode characteristics at the edge of FIRE mode in KSTAR by Chweeho Heo, SangJin Park, GyungJin Choi, Jaewook Kim, Eun-jin Kim, YoungMu Jeon, Minjun J. Choi, Hyunsun Han, Choongki Sung, TaikSoo Hahm, Yong-Su Na

    Published 2025-01-01
    “…The weakly coherent mode (WCM) is observed at around 50 kHz in the spectrum of edge electron density fluctuations measured by beam emission spectroscopy. The weakly coherent feature becomes more pronounced as the amplitude of intermediate-frequency fluctuations (approximately 10–30 kHz) decreases, coinciding with a rise in the height of the temperature pedestal. …”
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  5. 3025

    Removal of direct navy blue dye from aqueous solutions using banana peels by F. Fuentes Gandara, I. Piñeres Ariza, A. Zambrano Arevalo, G. Castellar Ortega, C. Herrera Herrera, S. Castro Muñoz, G. Peluffo Foliaco, J. Pinedo-Hernández

    Published 2024-07-01
    “…Fourier transform infrared spectroscopy and the Boehm method were employed to analyze and measure organic functional groups, specifically acidic groups, for identification and quantification purposes. …”
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  6. 3026

    Study of Crystal Structure, Lattice Strain, and Elemental Content of Natural Iron Sand Nanoparticles Synthesized by the Coprecipitation Method by Tulus Na Duma, Syahrul Humaidi, Erna Frida, Mohd. Mustafa Awang Kechik, Muhammadin Hamid, Martha Rianna, Novita, Rahmadhani Banurea, Norazimah Mohd Yusof, Nur Jannah Azman

    Published 2025-01-01
    “…The results showed that based on SEM-EDX (scanning electron microscopy coupled with energy-dispersive x-ray spectroscopy) analysis, the Fe content of the raw iron sand, initially at 34.76%, increased to 45.50% following synthesis with NH4OH, indicating enhanced purity in the final product. …”
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  7. 3027

    Awake brain MRSI reveals anesthetic sensitivity and regional aging effects on [13C]bicarbonate metabolism in mice by Maiko Ono, Rena Kono, Kosei Hirata, Kosei Hirata, Keita Saito, Motonao Nakao, Yoichi Takakusagi, Rikita Araki, Akira Sumiyoshi, Yuhei Takado

    Published 2025-02-01
    “…Abnormalities and alterations in the glycolytic pathway in the pathology of neurodegenerative diseases and brain aging have received much attention, as clinical applications of proton-based magnetic resonance spectroscopy (MRS) have recently illuminated the elevation of lactate concentrations in the brains of patients with neurodegenerative diseases, including Alzheimer’s disease. …”
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  8. 3028

    Characterization of Enterobacterales growing on selective CPE screening plates with a focus on non-carbapenemase-producing strains by Reut Efrati Epchtien, Elizabeth Temkin, Mor N. Lurie-Weinberger, Ophir Kastel, Alona Keren-Paz, David Schwartz, Yehuda Carmeli

    Published 2025-02-01
    “…Fourier-transform infrared spectroscopy (FTIR) was used to analyze phenotypic similarity, and whole genome sequencing was conducted on a subset of non-CPE isolates. …”
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  9. 3029

    Optimization of the Process for Defatting Sea Cucumber Powder by Supercritical CO2 Extraction and Its Effect on Volatile Flavor Compounds by Gongming WANG, Hui HUANG, Yuzhu DING, Jinglin XUE, Zhiqiang SHU, Yuexin JING, Chunna JIAO, Jian ZHANG

    Published 2025-02-01
    “…The fatty acid composition of the sea cucumber powder before and after extraction as well as that in the supercritical CO2 extract were detected using gas chromatography, and supercritical CO2 extraction of volatile flavor substances was investigated using headspace-gas chromatography-ion migration spectroscopy (HS-GC-IMS). The results showed that the optimal conditions for supercritical CO2 extraction was optimized using single factor and orthogonal experiment, with an extraction temperature of 60 ℃, extraction pressure of 40 MPa, extraction time of 2 h, and a degreasing rate of 57.6%±3.89%. …”
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  10. 3030

    Optimised extraction of antioxidant components from Calophyllum inophyllum L. seeds using response surface methodology by L. Fitriyana, M.D. Supardan, Y. Aisyah, Irfan .

    Published 2024-07-01
    “…Characterisation with gas chromatography-mass spectroscopy revealed ten compounds with major percentage values, among them 2''-(trimethylsilyl)oxy-3,4,4'',5- tetramethoxychalcone (49.70 per cent). …”
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  11. 3031

    An NMR Study of the Bortezomib Degradation under Clinical Use Conditions by Adele Bolognese, Anna Esposito, Michele Manfra, Lucio Catalano, Fara Petruzziello, Maria Carmen Martorelli, Raffaella Pagliuca, Vittoria Mazzarelli, Maria Ottiero, Melania Scalfaro, Bruno Rotoli

    Published 2009-01-01
    “…Commercial BTZ samples, reconstituted according to the reported commercial instructions and stored at 4∘C, were analyzed by high-field nuclear magnetic resonance spectroscopy in comparison with identical samples bubbled with air and argon, respectively. …”
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  12. 3032

    Intraoperative haemodynamic optimisation using the Hypotension Prediction Index and its impact on tissular perfusion: a protocol for a randomised controlled trial by Javier Ripollés-Melchor, Ane Abad-motos, Juan Victor Lorente, Ignacio Jimenez, Alejandra Becerra, Wilbert Wesselink, Francesca Reguant, Irene Mojarro, Maria de los Angeles Fuentes, Elizabeth Agudelo, Francisco Herrero-Machancoses, Paula Callejo, Joan Bosch, Manuel Ignacio Monge

    Published 2022-06-01
    “…Tissue oxygen saturation will be recorded non-invasively and continuously by using near-infrared spectroscopy technology. Biomarkers of acute kidney stress (cTIMP2 and IGFBP7) will be obtained before and after surgery. …”
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  13. 3033

    Globular-shaped Aβ oligomers have diverse mechanisms for promoting Aβ aggregations with the facilitation of fibril elongation by Hiroto Nakano, Sadao Hikishima, Makoto Mori, Jota Minamikawa, Daiki Muramatsu, Yasuhiro Sakashita, Tokuhei Ikeda, Moeko Noguchi-Shinohara, David B. Teplow, Kenjiro Ono

    Published 2025-02-01
    “…Conformational changes of Aβ42 aggregates in the presence of gAβO was also evaluated using circular dichroism spectroscopy. The results of the ThT analysis and HS-AFM observation indicated that gAβO promoted fibril formation of LMW Aβ42 while gAβO itself did not form fibrous aggregates, indicating that gAβO would have a catalytic effects on LMW Aβ42 aggregation. …”
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  14. 3034

    Investigation of the physicochemical factors affecting the in vitro digestion and glycemic indices of indigenous indica rice cultivars by Indira Govindaraju, Anusha R. Das, Ishita Chakraborty, Sib Sankar Mal, Bhaswati Sarmah, Vishwa Jyoti Baruah, Nirmal Mazumder

    Published 2025-01-01
    “…The rice cultivars were subjected to physicochemical characterization by using Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC) techniques. …”
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  15. 3035

    Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates by Qi Li, Linfeng Li, Bohao Yin, Xiaoyang Lin, Anwen Xiao, Weijie Xue, Hengjie Liu, Yichun Li

    Published 2025-01-01
    “…Pot experiments were conducted to assess the impacts of mineral, organic, and microbial amendments on the Cd distribution in soil aggregates using synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectroscopy and nano-scale secondary ion mass spectrometry (NanoSIMS). …”
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  16. 3036

    Reduced frontotemporal connectivity during a verbal fluency task in patients with anxiety, sleep, and major depressive disorders by Fanxi Ding, Yiyang Ying, Yuqing Jin, Xuanru Guo, Xuanru Guo, You Xu, Zhenghe Yu, Haiteng Jiang, Haiteng Jiang, Haiteng Jiang

    Published 2025-01-01
    “…Therefore, this study combined the VFT and the functional near-infrared spectroscopy (fNIRS) to investigate the neural mechanisms underlying the impairment of executive function across psychiatric disorders including anxiety disorder (AD), sleep disorder (SD) and major depressive disorder (MDD).MethodsTwo hundred and eight participants were enrolled including 52 AD, 52 SD, 52 MDD and 52 healthy controls (HCs). …”
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  17. 3037

    Improving Mechanical Performance of Hybrid Polymer Composites: Incorporating Banana Stem Leaf and Jute Fibers with Tamarind Shell Powder by Karuppusamy Manickaraj, Aruchamy Karthik, Sivasubramanian Palanisamy, Manivannan Jayamani, Syed Kashif Ali, Subramanian Lakshmi Sankar, Saleh A. Al-Farraj

    Published 2025-01-01
    “…Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to investigate chemical bonding and morphology. …”
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  18. 3038

    Unlocking innovation: Novel films synthesised and structurally analysed from poly (l-lactide-co-ethylene adipate) block copolymers blended with poly(lactic acid) by Athira John, Klementina Pušnik Črešnar, Johan Stanley, Sabina Vohl, Damjan Makuc, Dimitrios N. Bikiaris, Lidija Fras Zemljič

    Published 2025-02-01
    “…The study employs a range of analytical techniques, including Nuclear Magnetic Resonance (NMR), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Polarised Light Microscopy (PLM), Differential Scanning Calorimetry (DSC), and Thermogravimetric Analysis (TGA), to thoroughly characterize the copolymers and blend films. …”
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  19. 3039

    Comparative analysis of feeding strategies and post mortem aging time on the oxidative status and color of the longissimus thoracis et lumborum muscle in Braford steers by María Sofía Castaño Ledesma, Gustavo Adolfo Palma, Gustavo Adolfo Palma, Claudio Darío Borsarelli, Claudio Darío Borsarelli, María Sumampa Coria, María Sumampa Coria

    Published 2025-01-01
    “…The content of heme pigment was determined by a spectrophotometric assay, while the fluorescence fingerprint of beef was evaluated by fluorescence spectroscopy excitation-emission matrices (FEEM). Additionally, the muscle microstructure was analyzed via scanning electron microscopy (SEM). …”
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  20. 3040