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  1. 3201
    “…The broad activity in various cross-coupling reactions in an array of N–C, O–C, C–Cl, C–Br, C–S and C–H bond cross-couplings is demonstrated. …”
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    IPr# – highly hindered, broadly applicable N-heterocyclic carbenes
  2. 3202
    “…A Hirshfeld surface analysis indicates that the most prevalent inter­actions are O⋯H/H⋯O (41.2%), H⋯H (19.2%), C⋯H/H⋯C (12.2%) and C⋯O/ O⋯C (8.4%).…”
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    Crystal structure and Hirshfeld surface analysis of dimethyl 5-[2-(2,4,6-trioxo-1,3-diazinan-5-yl­idene)hydrazin-1-yl]benzene-1,3-di­carboxyl­ate 0.224-hydrate
  3. 3203
    “…After PM, the contact angle decreased while the porosity increased. XPS showed that the O/C ratio was higher after PM. The cell culture experiments revealed that the initial adhesion of human keratinocytes (HaCaT) was supported better on BC-L, while the subsequent growth of these cells and final cell population density were higher on BC-AD. …”
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    Influence of Drying Method and Argon Plasma Modification of Bacterial Nanocellulose on Keratinocyte Adhesion and Growth
  4. 3204
    “…With both fungi and NPK, increases in O/H and O/C atomic ratios indicated an increase in the number of O-containing functional groups. …”
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    Chemical Transformation of Humic Acid Molecules under the Influence of Mineral, Fungal and Bacterial Fertilization in the Context of the Agricultural Use of Degraded Soils
  5. 3205
    “…The intermolecular interactions between agarose and Mg(NO(3))(2) are studied by Fourier transform infrared (FTIR) spectroscopy by observing the presence of –OH, –CH, N–H, CH(3), C–O–C, C–OH, C–C and 3,6-anhydrogalactose bridges in the FTIR spectra. …”
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    Role of Mg(NO(3))(2) as Defective Agent in Ameliorating the Electrical Conductivity, Structural and Electrochemical Properties of Agarose–Based Polymer Electrolytes
  6. 3206
    “…The major nitrogen functionalities on most samples were O=C–NH and quaternary N. However, =C and quaternary N groups were found to be crucial in determining the CO(2) adsorption performance. …”
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    The Application of Hollow Carbon Nanofibers Prepared by Electrospinning to Carbon Dioxide Capture
  7. 3207
    “…The carbon nanofibers with P‐O‐C functionalization show relatively high graphitization degree and promising textural properties. …”
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    General, Metal‐free Synthesis of Carbon Nanofiber Assemblies from Plant Oils
  8. 3208
    “…Despite Parr functions correctly predicting the experimental regioselectivity with the most favorable O-CCCl(3) interaction, these reactions follow a two-stage one-step mechanism in which formation of the O-C(CCl(3)) bond takes place once the C-C(NO(2)) bond is already formed. …”
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    The Participation of 3,3,3-Trichloro-1-nitroprop-1-ene in the [3 + 2] Cycloaddition Reaction with Selected Nitrile N-Oxides in the Light of the Experimental and MEDT Quantum Chemical Study
  9. 3209
    “…We studied the effect of different vial types, characterized by the presence of hydrophilic (sulfate treatment) or hydrophobic (siliconization and TopLyo Si–O–C–H layer) inner coatings, on the application of VISF. …”
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    Surface Treatment of Glass Vials for Lyophilization: Implications for Vacuum-Induced Surface Freezing
  10. 3210
    “…The teeth were stored in artificial saliva at 37(o)C between radiation treatments. RESULTS: In preirradiation dentin, a Knoop hardness value of 58.8 (14.1) KHN was obtained. …”
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    Effect of Preirradiation Fluoride Treatment on the Physical Properties of Dentin
  11. 3211
    “…The occurrence of reversible cross-linking was studied by checking the presence of relevant peaks in FTIR spectra, i.e., CH out-of-plane bending vibrations of the furan ring’s peak (γCH) at an absorption band of 730–734 cm(−1), CH=CH of the BM aromatic ring’s stretching vibrations (υCH=CH) at an absorption band of 1510 cm(−1), and the DA adduct (C-O-C, δDAring) at an absorption band of 1186 cm(−1). …”
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    Cross-Linking of Polypropylene via the Diels–Alder Reaction
  12. 3212
    “…In this work we report the synthesis of the new ionomer poly(alkylene biphenyl butyltrimethyl ammonium) (ABBA) with a backbone devoid of alkaline-labile C-O-C bonds and with quaternary ammonium groups grafted on long side chains. …”
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    Anion-Conducting Polymer Electrolyte without Ether Linkages and with Ionic Groups Grafted on Long Side Chains: Poly(Alkylene Biphenyl Butyltrimethyl Ammonium) (ABBA)
  13. 3213
    por Yu, Jiangfeng, Lai, Wenzhen
    Publicado 2021
    “…The hydrogen atom transfer from the hydrogen donor (substrate) to the Mn(iv)–superoxo species is the rate-limiting step, having a high reaction barrier and a large endothermicity. Subsequently, the O–C bond formation is concerted with an electron transfer from the substrate radical to the Mn and a proton transfer from the hydroperoxo moiety to the nearby N atom of the corrole ring, generating an alkylperoxo Mn(iii) complex. …”
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    Mechanistic insights into dioxygen activation by a manganese corrole complex: a broken-symmetry DFT study
  14. 3214
    “…It is found that curved cone-shape carbon nanotubes (CNTs) with abundant structural defects and O-containing surface functional groups, such as C–O, C[double bond, length as m-dash]O and –OH, can be obtained from the catalytic reforming of the mixture of PE and LG. …”
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    Carbon nanotubes/Al(2)O(3) composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)
  15. 3215
    “…The improved signal intensity at 1253 cm(−1) (SO(4)(2−), symmetric stretching) for AS and 1114 cm(−1) (C–O–C, stretching vibration) for NS were selected for quantification. …”
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    A KBr-impregnated paper substrate as a sample probe for the enhanced ATR-FTIR signal strength of anionic and non-ionic surfactants in an aqueous medium
  16. 3216
    “…The theoretical calculation results reveal that rGO-4-PP Nc can act as an efficient Fenton-like catalyst for H(2)O(2) activation and pollutant degradation through formation of electron-rich O and electron-deficient C centers on the C–O–C bridge. The actual rGO-4-PP Nc is also prepared via a surface complexation and copolymerization process. …”
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    Theoretical and experimental evidence for rGO-4-PP Nc as a metal-free Fenton-like catalyst by tuning the electron distribution
  17. 3217
    “…Ring-opening reactions of the aromatics and cleavage of C–O–C linkages were two crucial paths to lignin oxidative degradation. …”
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    Fates of hemicellulose, lignin and cellulose in concentrated phosphoric acid with hydrogen peroxide (PHP) pretreatment
  18. 3218
    “…In addition, the molar ratios of H/C, O/C and (O + N)/C decreased, which implied that the biochars became more aromatic and carbonaceous with a lower polarity and fewer oxygen-based functional groups. …”
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    Adsorption characteristics of Cd(ii) in aqueous solutions using spent mushroom substrate biochars produced at different pyrolysis temperatures
  19. 3219
    “…Here, we report a case of a 40-year-old Caucasian female, gravida 1, para 0, with a spontaneous singleton pregnancy, who presented to the emergency room during her 17th week of gestation with fever (38.8ºC), fatigue, shortness of breath, and palpitations. …”
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    Placental Ultrasonographic Findings Due to COVID-19 Infection During Pregnancy: A Case Report
  20. 3220
    “…In addition, after the plasma treatment, the number of C–OH/COOH bonds and O=C–O bonds increased, which also greatly improved the adhesion between the PET and energetic polymers. …”
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    Interface Adhesion Property and Laser Ablation Performance of GAP-PET Double-Layer Tape with Plasma Treatment
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