Showing 2,801 - 2,820 results of 3,204 for search '"spectroscopy"', query time: 0.05s Refine Results
  1. 2801

    Hydrolysis of Methionine- and Histidine-Containing Peptides Promoted by Dinuclear Platinum(II) Complexes with Benzodiazines as Bridging Ligands: Influence of Ligand Structure on th... by Snežana Rajković, Beata Warżajtis, Marija D. Živković, Biljana Đ. Glišić, Urszula Rychlewska, Miloš I. Djuran

    Published 2018-01-01
    “…The chlorido Pt(II) complexes 1–3 were converted into the corresponding aqua species 1a–3a, and their reactions with an equimolar amount of Ac–L–Met–Gly and Ac–L–His–Gly dipeptides were studied by 1H NMR spectroscopy in the pH range 2.0 < pH < 2.5 at 37°C. …”
    Get full text
    Article
  2. 2802

    The Interplay of Surface Composition, Mineralogy, and Physical Conditions That Affect the Surface Release Processes and Particle Environment of Mercury by Peter Wurz, Noah Jäggi, André Galli, Audrey Vorburger, Deborah Domingue, Paul S. Szabo, Johannes Benkhoff, Océane Barraud, Daniel Wolf Savin

    Published 2025-01-01
    “…In situ composition measurements of the exosphere can contribute to the study of the composition of the surface, together with a range of remote sensing techniques (ultraviolet, visible, infrared, X-ray, gamma-ray, and neutron spectroscopy). The external drivers for the particle release from the surface are solar photons, solar wind plasma, and micrometeoroid impacts. …”
    Get full text
    Article
  3. 2803

    Effects of biogenic CBM generation on microcrystalline and functional groups of high-volatile bituminous coal by Aikuan Wang, Qiang Huang, Zhiyuan Yao

    Published 2025-02-01
    “…In the course of the experiment, X-ray diffraction (XRD) analysis is employed to examine the coal microcrystal structures, whereas Fourier transform infrared (FTIR) spectroscopy serves for the analysis of the chemical structures. …”
    Get full text
    Article
  4. 2804

    Optimization of Starch Saccharification Process and Structural Characterization of Starch Using Low Transglycosidation Activity Glucoamylase GluM3 by Haiyue FAN, Zhao YU, Zhengjie ZHANG, Ming LI, Yingguo BAI, Feng YU, Zhongyuan LI

    Published 2025-02-01
    “…Structural characterization of starch granules was conducted using methods such as scanning electron microscopy, X-ray diffraction, and infrared spectroscopy. The results showed that the optimal saccharification conditions were a liquefaction DE value of 16%, temperature at 66 ℃, pH at 3.7, time at 3 h, enzyme dosage at 450 U/g with pullulanase dosage at 1.25 U/g. …”
    Get full text
    Article
  5. 2805

    Elucidation of novel, alternative, fiber-reinforced iron-based pozzolanic composites as SCMs by Hafiz Muhammad Nadir, Ash Ahmed, Ikram Moshi

    Published 2024-07-01
    “…The microstructural analysis using X-ray diffraction/fluorescence, scanning electron microscopy/energy-dispersive analysis with X-ray spectroscopy supported the strength and durability parameters by showing minimal/no ettringite formation and increased calcium silicate hydrates gel formation due to the use of FeCO3 and pozzolans. …”
    Get full text
    Article
  6. 2806

    Electroanalytical Performance of a Carbon Paste Electrode Modified by Coffee Husks for the Quantification of Acetaminophen in Quality Control of Commercialized Pharmaceutical Table... by Serge Foukmeniok Mbokou, Maxime Pontié, Jean-Philippe Bouchara, Francis Merlin Melataguia Tchieno, Evangeline Njanja, Assad Mogni, Pierre Yves Pontalier, Ignas Kenfack Tonle

    Published 2016-01-01
    “…Scanning electron microscopy (SEM) and SEM-energy dispersive X-ray spectroscopy (SEM-EDX) were, respectively, used for the morphological and elemental characterization of coffee husks prior to their utilization. …”
    Get full text
    Article
  7. 2807

    Impact of Ramadan Intermittent Fasting on Salivary pH, Flow Rate, and Electrolyte Levels in Healthy Adult Men by Sinda Yacoub, Mehdi Khemiss, Amira Besbes, Helmi Ben Saad

    Published 2025-02-01
    “…., calcium, potassium, sodium, chloride, and phosphate) were determined using inductively coupled plasma-optical emission spectroscopy. Twenty-seven participants completed all three sessions. …”
    Get full text
    Article
  8. 2808

    Effect of Preservation Methods on Physicochemical Quality, Phenolic Content, and Antioxidant Activity of Stevia Leaves by Nadia Hidar, Abdelhamid Noufid, Ayoub Mourjan, El Mustapha El Adnany, Safa Mghazli, Mohammed Mouhib, Abderrahim Jaouad, Mostafa Mahrouz

    Published 2021-01-01
    “…However, the main functional groups were stable as confirmed by Fourier transform infrared spectroscopy analysis. The effects on chlorophyll content, phenolic profile, and antioxidant properties were evaluated before and after ten months of storage. …”
    Get full text
    Article
  9. 2809

    Different approaches for plasma nitrocarburizing of austenitic stainless steel using a plasma-activated solid carbon precursor in a hot-wall reactor by Saeed M. Jafarpour, Anke Dalke, Horst Biermann

    Published 2025-01-01
    “…Additionally, the type and concentrations of the treatment-relevant gas species generated during each treatment are measured in real-time using laser absorption spectroscopy. The results revealed the potential of using a plasma-activated solid carbon precursor in a hot-wall reactor for an efficient nitrocarburizing treatment of AISI 316L. …”
    Get full text
    Article
  10. 2810
  11. 2811

    Inhibition mechanism of self-assembled epoxy-silane/dithiol film on copper corrosion by Chen Sang, Juan Qiu, Boyu Yuan, Kaiyu Zhang, Nan Huang, Qinghong Wang, Houyi Ma, Liang Li, Chao Wang

    Published 2025-03-01
    “…Sputtering measurements by X-ray photoelectron spectroscopy showed that some Cl− ions permeated into the outer layer of the epoxy-silane/DOT film and formed CuCl interlayer with the Cu+ ions in the film. …”
    Get full text
    Article
  12. 2812

    Metal and Precursor Effect during 1-Heptyne Selective Hydrogenation Using an Activated Carbon as Support by Cecilia R. Lederhos, Juan M. Badano, Nicolas Carrara, Fernando Coloma-Pascual, M. Cristina Almansa, Domingo Liprandi, Mónica Quiroga

    Published 2013-01-01
    “…All catalysts were characterized by temperature programmed reduction, X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. TPR and XPS suggest that the metal in all catalysts is reduced after the pretreatment with H2 at 673 K. …”
    Get full text
    Article
  13. 2813

    No Effect of Anodal tDCS on Verbal Episodic Memory Performance and Neurotransmitter Levels in Young and Elderly Participants by Annegret Habich, Johannes Slotboom, Jessica Peter, Roland Wiest, Stefan Klöppel

    Published 2020-01-01
    “…Using MEGA-PRESS edited magnetic resonance spectroscopy (MRS), Glx and GABA levels were measured in the left DLPFC before and after the stimulation period. …”
    Get full text
    Article
  14. 2814

    Biomarker Profiling for Pyridoxine Dependent Epilepsy in Dried Blood Spots by HILIC-ESI-MS by Elizabeth Mary Mathew, Sudheer Moorkoth, Leslie Lewis, Pragna Rao

    Published 2018-01-01
    “…We report the development and validation of a hydrophilic interaction liquid chromatography (HILIC) hyphenated with mass spectroscopy for the quantification of the above analytes from dried blood spot samples. …”
    Get full text
    Article
  15. 2815

    Green synthesis of high-performance gallium oxide supercapacitor: A path to outstanding energy density by Jamal Alnofiay, Ahmed Al-Shahrie, Elsayed Shalaan

    Published 2024-11-01
    “…X-ray photoelectron spectroscopy (XPS) divulged Ga3+ as the dominant oxidation state of gallium in Ga2O3. …”
    Get full text
    Article
  16. 2816

    FTIR: A novel method for identifying fish gut contents by Abolfazl Aminimehr, Mohammad Amini Chermahini, Laleh Moosavi Dehmoordi

    Published 2024-06-01
    “…The aim of this study was to investigate different foods and their composition alterations along the digestive tract using FTIR spectroscopy for the first time, to evaluate the possibility of determining an index to identify the consumed food using the resulting feces.Materials and methods: Five different types of food were used to feed tilapia: common carp-formulated feed, Gammarus, bloodworm, a combination of bloodworm-Gammarus (1:1), and wheat. …”
    Get full text
    Article
  17. 2817

    Indigo Carmine and 2,6-Dichlorophenolindophenol Removal Using Cetyltrimethylammonium Bromide-Modified Palm Oil Fiber: Adsorption Isotherms and Mass Transfer Kinetics by Marcel Cédric Deussi Ngaha, Evangéline Njanja, Giscard Doungmo, Arnaud Tamo Kamdem, Ignas Kenfack Tonle

    Published 2019-01-01
    “…Raw, NaOH-treated, and CTAB-modified POF were characterized by Fourier-transform infrared (FT-IR) spectroscopy, elemental analysis, thermogravimetric-hyperdifferential scanning calorimetric (TG-HDSC) analysis, X-ray diffraction (XRD), and scanning electron microscopy (SEM). …”
    Get full text
    Article
  18. 2818

    Bioenergy potential of Chlorella vulgaris under the influence of different light conditions in a bubble column photobioreactor by S. Dhanasekar, R. Sathyanathan

    Published 2023-10-01
    “…Fourier transform infrared spectroscopy was used to illustrate the functional group of microalgae under different lighting conditions. …”
    Get full text
    Article
  19. 2819

    Effectiveness of Phytomining of Vanadium (V) and Chromium (Cr) Using Cymbopogon citratus and Portulaca grandiflora in Red Mud with Manure Addition by Fitranto Irwan, Voijant Tangahu Bieby, Yulikasari Andriyan, Mashudi, Sulistyaning Titah Harmin, Najib Rizal Moh., Salsabilla Faiza, Ming Lam Yeng, Wang Yamin, In Hurun, Maryanawati Soesilo Mery

    Published 2025-01-01
    “…The phytomining capacity of the plants was determined by measuring the concentration of vanadium (V) and chromium (Cr) in the plant extractions using inductively coupled plasma-optical emission spectroscopy (ICP-OES) equipment. The findings indicated that the Cymbopogon citratus and Portulaca grandiflora plants were capable of surviving on a red mud medium with the addition of 10% manure. …”
    Get full text
    Article
  20. 2820

    Comparative Evaluation of Structural Characteristics and in Vitro Biological Activities of Polysaccharides from Common Bean (Phaseolus vulgaris L.) and Those from Shiitake Mushroom... by XU Mengyue, TIAN Xin, WANG Junke, WU Aoxue, ZOU Zhiyi, WU Jiahui, WANG Hongbo

    Published 2024-12-01
    “…Fourier transform infrared spectroscopy (FTIR), high performance liquid chromatography (HPLC), high performance gel permeation chromatography (HPGPC), scanning electron microscopy (SEM) and Congo red assay were used to characterize the structures, monosaccharide compositions, molecular masses, and microstructures of the two kinds of polysaccharides. …”
    Get full text
    Article