Showing 3,141 - 3,160 results of 4,095 for search '"spectroscopy"', query time: 0.06s Refine Results
  1. 3141

    Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate Nanocomposites by Pietro Russo, Domenico Acierno, Mariano Palomba, Gianfranco Carotenuto, Roberto Rosa, Antonino Rizzuti, Cristina Leonelli

    Published 2012-01-01
    “…Structural investigations by Micro-Raman spectroscopy highlighted the obtainment of magnetite nanocrystals with a partial surface oxidation to maghemite (γ-Fe3O4). …”
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  2. 3142

    Large‐Area Bright Emission of Plasmon‐Coupled Dark Excitons at Room Temperature by Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Huitae Joo, Yeonjeong Koo, Hayoung Ko, Ki Kang Kim, Youngbum Kim, Jeongyong Kim, Kyoung‐Duck Park, Mun Seok Jeong

    Published 2025-01-01
    “…Room‐temperature dark exciton emission is confirmed via energy‐, angle‐, and time‐resolved spectroscopy experiments, as well as confocal PL mapping. …”
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  3. 3143

    Spectroscopic, quantum chemical, and topological calculations of the phenylephrine molecule using density functional theory by Mukesh Khadka, Manoj Sah, Raju Chaudhary, Suresh Kumar Sahani, Kameshwar Sahani, Binay Kumar Pandey, Digvijay Pandey

    Published 2025-01-01
    “…In the vibrational analysis, Total Electron Density (TED) assignments were done in the intense region where the frequency of the title molecule was shifted distinctly. For vibrational spectroscopy, FT-IR and Raman spectra in the neutral and anion states were plotted and compared. …”
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  4. 3144

    Furan-Indole-Chromenone-Based Organic Photocatalyst for α-Arylation of Enol Acetate and Free Radical Polymerization Under LED Irradiation by Aurélien Galibert-Guijarro, Adel Noon, Joumana Toufaily, Tayssir Hamieh, Eric Besson, Stéphane Gastaldi, Jacques Lalevée, Laurence Feray

    Published 2025-01-01
    “…The chemical mechanisms that govern the radical chemistry are discussed by means of different techniques, including fluorescence-quenching experiments, UV-visible absorption and fluorescence spectroscopy, and cyclic voltammetry analysis.…”
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  5. 3145

    Synthesis of an Acrylamide Copolymer Containing Nano-SiO2 by Ex Situ Cu(0)-Mediated SET-LRP by Ling Wang, Zhendong Li, Pingsen Huang, Wei Ding

    Published 2019-01-01
    “…The prepared acrylamide copolymers have been characterized by FTIR spectroscopy and 1H NMR spectrometry. The properties of the copolymers have been assessed by viscometry and rheometry. …”
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  6. 3146

    Preparation of Portland Cement with Gold Ore Tailings by Qiang Wang, Geng Yao, Xiangnan Zhu, Junxiang Wang, Peng Wu, Xianjun Lyu

    Published 2019-01-01
    “…X-ray diffraction (XRD), thermogravimetric (TG), and scanning electron microscope energy-dispersive spectroscopy (SEM-EDS) analysis techniques were used to study the mineralogical phases of the clinker and raw materials, hydration product types, and microtopography. …”
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  7. 3147

    Removal of As Using Chitosan–Montmorillonite Composite: Sorptive Equilibrium and Kinetics by Ansar Anjum, Chand K. Seth, Monika Datta

    Published 2013-04-01
    “…The adsorption kinetics demonstrated intra-particle diffusion as the rate-determining step during the initial phase of adsorption (up to 10 minutes of contact time), which were supported by X-ray diffraction studies; by contrast, chemisorption was found to be the rate-determining step during the later part of adsorption (after 10 minutes of contact time), which were confirmed by Fourier transform infrared spectroscopy-attenuated total reflectance studies. Desorption of As 3+ from the sorbents was optimized using potassium dihydrogen phosphate, wherein 0.1 M of the desorbate was found to be an appreciable regenerating agent supporting the reusability of the sorbent up to three cycles, retaining 4402 μg g −1 of the metal ion.…”
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  8. 3148

    Modification of cotton gauze using Cynodon dactylon (Bermuda grass) and assessment of the chemical and antimicrobial properties by Umme Lewara Bristi, Abdur Rahman, Sadit Bihongo Malitha, Oishee Rahman, Sharmin Shoukat

    Published 2024-12-01
    “…Several tests were conducted, including Fourier Transform Infrared Spectroscopy (FTIR), anti-bacterial test, skin irritation test, gram-positive and gram-negative bacterial tests, color fastness to wash test, Scanning Electron Microscopy (SEM), and Energy-dispersive X-ray (EDX). …”
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  9. 3149

    Gadolinium(III) Complexes with N-Alkyl-N-methylglucamine Surfactants Incorporated into Liposomes as Potential MRI Contrast Agents by Simone Rodrigues Silva, Érica Correia Duarte, Guilherme Santos Ramos, Flávio Vinícius Crizóstomo Kock, Fabiana Diuk Andrade, Frédéric Frézard, Luiz Alberto Colnago, Cynthia Demicheli

    Published 2015-01-01
    “…Complexes of gadolinium(III) with N-octanoyl-N-methylglucamine (L8) and N-decanoyl-N-methylglucamine (L10) with 1 : 2 stoichiometry were synthesized and characterized by elemental analysis, electrospray ionization-tandem mass spectrometry (ESI-MS), infrared (IR) spectroscopy, and molar conductivity measurements. The transverse (r2) and longitudinal (r1) relaxivity protons were measured at 20 MHz and compared with those of the commercial contrasts. …”
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  10. 3150

    Design of natural asphalt sulfamic acid (NA-NHSO3H) as a scalable natural asphalt-derived heterogeneous Brønsted acid to catalyze multicomponent reactions meeting green chemistry g... by Sahar Abdolahi, Mohammad Soleiman-Beigi

    Published 2025-01-01
    “…The synthesis of NA-NHSO3H is straightforward, and its characterization is comprehensively conducted using various analytical techniques such as Fourier transform-infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), Energy-dispersive X-ray -Map (EDX-Map), Brunauer-Emmett-Teller (BET), Thermogravimetric analysis (TGA) and Transmission electron microscopy (TEM). …”
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  11. 3151

    Anticancer Activity of Ferulic Acid-Inorganic Nanohybrids Synthesized via Two Different Hybridization Routes, Reconstruction and Exfoliation-Reassembly by Hyoung-Jun Kim, Kitae Ryu, Joo-Hee Kang, Ae-Jin Choi, Tae-il Kim, Jae-Min Oh

    Published 2013-01-01
    “…From X-ray diffraction and infrared spectroscopy, both nanohybrids were determined to incorporate ferulic acid molecules in anionic form. …”
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  12. 3152

    Effect of Pea Resistant Starch on Emulsion Gel Properties and in Vitro Digestibility of Myofibrillar Proteins by CHEN Jinyu, HU Fangyang, JI Zhirui, WU Zijian

    Published 2024-12-01
    “…Fourier transform infrared spectroscopy (FTIR) showed no covalent interaction between MP and pea RS3. …”
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  13. 3153

    Green synthesis and characterization of Selenium/Zirconium bimetallic nanoparticles using Cinnamomum camphora leaf extract and their photocatalyst and anticancer activity by Mounaguru Sindhudevi, Subramanian Srinivasan, Balakrishnan Karthekiyan, Arumugam Muthuvel

    Published 2023-11-01
    “…The surface morphology with particle size and optical attribute of camphor-mediated BNPs can be analyzed by various studies such as Uv- visible spectroscopy, XRD, AFM, SEM –EDX, HR-TEM, and XPS study the size of the SeZr BNPs was observed to less than 100 nm, which conforms to the bioactive nature of bimetallic nanoparticles. …”
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  14. 3154
  15. 3155

    Cerebral Blood Flow in Orthostatic Intolerance by Muhammad Shahzeb Khan, Amanda J. Miller, Arooba Ejaz, Jeroen Molinger, Parag Goyal, David B. MacLeod, Ashley Swavely, Elyse Wilson, Meghan Pergola, Harikrishna Tandri, Camille Frazier Mills, Satish R Raj, Marat Fudim

    Published 2025-02-01
    “…In this review, we examine the literature studying CBF dysfunction in various syndromes with OI and evaluate methods of measuring CBF including transcranial Doppler ultrasound, extracranial cerebral blood flow ultrasound, near infrared spectroscopy, and wearable devices.…”
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  16. 3156

    Recyclable Xanthan/TiO2 Composite Cryogels towards the Photodegradation of Cr(VI) Ions and Methylene Blue Dye by Paulo V. O. Toledo, Leandro R. Marques, Denise F. S. Petri

    Published 2019-01-01
    “…The characterization of the XG/TiO2 cryogels comprised compression tests, swelling degree (SD) determination, Fourier transform infrared vibrational spectroscopy in the attenuated total reflectance mode (FTIR-ATR), scanning electron microscopy (SEM), and X-ray microtomography (CT) analyses. …”
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  17. 3157

    Production of Malheuran A, a Geranylated Flavonoid with Antimicrobial and Anti-Inflammatory Activities, in Hairy Root Cultures of <i>Dalea purpurea</i> by Amit Raj Sharma, Gaurav Gajurel, Salma Abdel-Karim, Mohammad Abrar Alam, Robert Colquhoun Shields, Fabricio Medina-Bolivar

    Published 2025-01-01
    “…The co-treatment of the hairy root cultures with the elicitors methyl-β-cyclodextrin, magnesium chloride, methyl jasmonate, and hydrogen peroxide led to the production and secretion of the geranylated flavanone malheuran A, which was confirmed by mass spectrometry and NMR spectroscopy analyses. The highest amount (104.3 ± 6.9 mg/L) of malheuran A was detected at 192 h after elicitor treatment. …”
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  18. 3158

    Improving the Physical Properties of Nanofibers Prepared by Electrospinning from Polyvinyl Chloride and Polyacrylonitrile at Low Concentrations by Salih Abbas Habeeb, Baseem Ali Nadhim, Ban Jawad Kadhim, Mohammed Salam Ktab, Ali Jawad Kadhim, Farqad Saleem Murad

    Published 2023-01-01
    “…For the investigation of the homogeneity and compatibility of mixture polymer solutions, it is examined by rheological properties such as viscosity, shear stress, shear rate, and calculation of the flow behavior index, while the investigation of the stability and high density of nanofibers without beads used field-emission scanning electron microscopy (FE-SEM), Fourier transform near-infrared spectroscopy (FT-NIR), X-ray diffraction (XRD), and differential scanning calorimetry-thermogravimetric analysis (DSC-TGA). …”
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  19. 3159
  20. 3160

    The influence of adding B. subtilis bacteria on the mechanical and chemical properties of cement mortar by Osama Ahmed Ibrahim, Ahmed Ibrahim Hassanin Mohamed, Wael Ibrahim, Raghda Osama Abd-Al Ftah, Shimaa R. Hamed, Sherif Fakhry M. Abd-Elnaby

    Published 2025-01-01
    “…Fourier-transform infrared spectroscopy (FTIR) confirmed the presence of hydroxyl, carbonate, and silicate groups, with bacterial samples having a higher carbonate content, indicating an increase in calcium carbonate formation and microstructure. …”
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