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3981
Adsorbate-driven dynamic active sites in stannosilicate zeolites
Published 2025-01-01“…In this study, a dynamic transformation of framework Sn−O−Si sites to Sn−OH/Si−OH pairs and subsequently a pseudo-Brønsted acid in stannosilicate zeolites upon molecular adsorption, which is analogous to various adsorbates/reactants under working conditions, was identified by solid-state nuclear magnetic resonance (NMR) spectroscopy for the first time, which challenges the widespread assumption that the active center structures remain rigid/stable during the catalytic process. …”
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3982
Unveiling the charge density wave mechanism in vanadium-based Bi-layered kagome metals
Published 2024-09-01“…Here, employing micro-focusing angle-resolved photoemission spectroscopy (μ-ARPES) and first-principles calculations, we systematically studied the unique CDW order in vanadium-based bi-layered kagome metals by comparing ScV6Sn6 with its isostructural counterpart YV6Sn6, which lacks a CDW ground state. …”
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3983
A dextrorotatory residues-incorporated bioactive dodecapeptide against enterohemorrhagic Escherichia coli
Published 2023-06-01“…Methods: Spatial conformation of synthetic peptide zp39 (GIIAGIIiKIKk-NH2, lowercase letters indicate dextrorotatory amino acids) was predicted by PEPstrMOD and its secondary structure was further determined by circular dichroism (CD) spectroscopy. Then, standard E. coli O157:H7 strain ATCC 43888 was used to evaluate the bioactivity of zp39. …”
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3984
Productive performance in Italian Mediterranean buffaloes after partially replacing dietary starch with simple sugars
Published 2023-11-01“…Individual milk yield was recorded daily, and 15 days apart, an individual milk sample was collected for milk quality analysis (fat, protein, casein, lactose, urea, β- hydroxybutyrate [BHB] and fatty acids profile) through mid-infrared spectroscopy (Milkoscan FT6000®, Foss Electric). Data were analyzed through a mixed ANOVA. …”
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3985
Influence of particle size on NIR spectroscopic characterization of sorghum biomass for the biofuel industry
Published 2025-01-01“…NIR spectroscopy is a rapid and accurate green technology for high-throughput biomass characterization, including sorghum (Sorghum bicolor), a promising energy crop for the biofuel industry. …”
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3986
The Identification and synthesis of metabolites of 4-(5-methyl-1,3,4-oxadiazole-2-yl)-benzenesulfonamide
Published 2024-11-01“…The structure of the obtained substances was confirmed by NMR spectroscopy and high-resolution mass spectrometry. At the final stage, animal biological fluids and model samples with the addition of the synthesized compounds were analyzed using HPLC-MS/MS to establish the structure of metabolites.Results and Discussion: N-hydroxy-4-(5-methyl-1,3,4-oxadiazole-2-yl)-benzenesulfonamide, 4-(5-(hydroxymethyl)-1,3,4-oxadiazole-2-yl)-benzenesulfonamide and 4-(5-methyl-1,3,4-oxadiazole-2-yl)-benzenesulfonic acid were identified and synthesized. …”
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3987
Bacteria-specific modified nucleoside is released and elevated in urine of patients with bacterial infections
Published 2025-01-01“…In this study, we performed liquid chromatography-mass spectroscopy (LC-MS) analysis of modified nucleosides from the RNA of 23 pathogenic bacteria, revealing 2-methyladenosine (m2A) as a common bacteria-specific modified nucleoside detected in all bacterial RNAs. …”
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3988
New Dihydro OO'Bis(Salicylidene) 2,2' Aminobenzothiazolyl Borate Complexes: Kinetic and Voltammetric Studies of Dimethyltin Copper Complex with Guanine, Adenine, and Calf Thymus DN...
Published 2006-01-01“…All complexes have been thoroughly characterized by elemental analysis, and IR, NMR, EPR, and UV-Vis spectroscopy and conductance measurements. The spectroscopic data support square planar environment around the <mml:math alttext="chem{Cu^{II}}"> <mml:msup> <mml:mtext>Cu</mml:mtext> <mml:mrow> <mml:mtext>II</mml:mtext> </mml:mrow> </mml:msup> </mml:math> atom, while the <mml:math alttext="chem{Sn^{IV}}"> <mml:msup> <mml:mtext>Sn</mml:mtext> <mml:mrow> <mml:mtext>IV</mml:mtext> </mml:mrow> </mml:msup> </mml:math> atom acquires pentacoordinate geometry. …”
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3989
A Novel Therapeutic Calcium Peroxide Loaded Injectable Bio-adhesive Hydrogel Against Periodontitis
Published 2025-02-01“…Materials and Methods: Gelatin-oxidized dextran hydrogel loaded with calcium peroxide and penicillin (CP-P hydrogel) was synthesized and characterized using Universal mechanical testing machine, Fourier transform infrared spectroscopy, swelling test, and dissolved oxygen meter. …”
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3990
Influence of substrate bias on the properties of CrAlN wear-resistant coating prepared by arc/magnetron composite technology
Published 2025-02-01“…The research comprehensively analyzes how varying substrate bias voltage influences the microstructural morphology, mechanical properties, and frictional behavior of the coatings using scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, nanoindentation, scratch test, and friction and wear tests. …”
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3991
Enhanced Antitumor Efficacy and Reduced Toxicity in Colorectal Cancer Using a Novel Multifunctional Rg3- Targeting Nanosystem Encapsulated with Oxaliplatin and Calcium Peroxide
Published 2025-01-01“…A multifunctional nanosystem (Rg3-Lip-OXA/CaO2) was established using Ginsenoside Rg3 liposomes targeting glucose transporter 1 overexpressed on the surface of CRC cells to co-deliver OXA and calcium peroxide (CaO2).Methods: The CaO2 nanoparticles were synthesized via the CaCl2-H2O2 reaction under alkaline conditions and characterized using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Rg3-Lip-OXA/CaO2 was prepared through a thin-film hydration approach and characterized; additionally, its stability and release behavior were studied. …”
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3992
Diagnostic Accuracy of Non-Invasive Diagnostic Tests for Nonalcoholic Fatty Liver Disease: A Systematic Review and Network Meta-Analysis
Published 2025-01-01“…For diagnosing steatosis stage 1, Hydrogen Magnetic Resonance Spectroscopy (H-MRS, DOR 15,745,657.6, 95% CI 17.2– 1,014,063.59) proved to be the most accurate. …”
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3993
Toxicological Characterization of Six Plants of the Beninese Pharmacopoeia Used in the Treatment of Salmonellosis
Published 2019-01-01“…The content of aluminum, chromium, cadmium, copper, iron, lead, zinc, arsenic, selenium, and manganese was measured in 10 mg of each extract by the inductively coupled plasma optical emission spectroscopy (ICPOES) method. The results of our study generally show the absence of significant effect of the extracts on the hematological and biochemical parameters of the rats. …”
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3994
Characterization of microplastics in human follicular fluid and assessment of their potential impact on mouse oocyte maturation in vitro
Published 2025-02-01“…Laser direct infrared spectroscopy of 19 hFF samples identified 7956 particles, including 1739 microplastics (21.9 %) from 30 types. …”
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3995
Oxygen vacancy-driven spin-transfer torque across MgO magnetic tunnel junctions
Published 2025-01-01“…As MTJs are now downscaled to 2 nm, basic experimental data challenge the accepted understanding of their operation. From transport spectroscopy, ferromagnetic resonance experiments and ab-initio calculations it is revealed that the high conductivity of STT-ready MTJs, and the STT effect therein, is mediated by oxygen vacancy complexes within the MgO barrier. …”
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3996
Evaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodes
Published 2025-01-01“…Unlike metal-nanoparticle exsolution, increasing the A-site deficiency did not enhance the extent of oxide-nanoparticle exsolution, whereas larger nanoparticles were obtained by increasing the exsolution temperature. Combined Raman spectroscopy and electron microscopy analysis revealed that BaCoO _3 , Co _3 O _4 , and amorphous BaCO _3 nanoparticles were formed on the surface of the double perovskites after the reductive treatments. …”
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3997
Dual-sided centripetal microgrooved poly (D,L-lactide-co-caprolactone) disk encased in immune-regulating hydrogels for enhanced bone regeneration
Published 2025-02-01“…Functional group analysis, surface morphology and hydrophilicity were evaluated using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and an optical contact angle measuring instrument, respectively. …”
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3998
IFN-γ reprograms cardiac microvascular endothelial cells to mediate doxorubicin transport and influences the sensitivity of mice to doxorubicin-induced cardiotoxicity
Published 2025-01-01“…Through surface-enhanced Raman spectroscopy and single-cell RNA sequencing, we explored the mechanisms underlying DIC phenotypic variations. …”
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3999
Pressure‐Enhanced Superconductivity and Structural Phase Transition in Layered Sn4P3
Published 2025-02-01“…Comprehensive measurements using in situ synchrotron X‐Ray diffraction and Raman spectroscopy reveal a structural phase transition with mild distortion of SnP3 building blocks and interlayer shrinkage under high pressure. …”
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4000
Technological dental sealants: in vitro evaluation of material properties and antibiofilm potential
Published 2025-02-01“…Abstract Background Due to the launch of new self-etching and self-adhesive sealing materials combined with the release of bioactive ions in the dental market, this in vitro study aimed to compare physical values of surface roughness (RS), vickers microhardness (VM), compositional energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), microbiological tests (inhibition halo-HI and surface microbial adhesion-MAS) and mechanical microshear bond strength (MBS). …”
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