Results 1 to 10 of about 91,463 (274)
H/D Isotope Effects on 1H-NMR Chemical Shifts in Cyclic Heterodimers and Heterotrimers of Phosphinic and Phosphoric Acids [PDF]
Molecules, 2020 Hydrogen-bonded heterocomplexes formed by POOH-containing acids (diphenylphosphoric 1, dimethylphosphoric 2, diphenylphosphinic 3, and dimethylphosphinic 4) are studied by the low-temperature (100 K) 1H-NMR and 31P-NMR using liquefied gases CDF3/CDF2Cl ...
Valeriia V. Mulloyarova +3 more
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Effect of Combined Application of Hydrofluoric and Phosphoric Acids and Active Irrigation with a Microbrush on Shear Bond Strength of Lithium Disilicate Ceramics to Enamel [PDF]
Advanced Biomedical ResearchBackground: This study assessed the effect of combined application of hydrofluoric (HF) acid and phosphoric acid (PA) and active irrigation (AI) with a microbrush on shear bond strength (SBS) of lithium disilicate (LDS) ceramics to enamel.
Masoud Hatami +2 more
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Chiral 1H NMR of Atropisomeric Quinazolinones With Enantiopure Phosphoric Acids [PDF]
Frontiers in Chemistry, 2018 A chiral phosphoric acid promoted enantioselective NMR analysis of atropisomeric quinazolinones was described, in which a variety of racemic arylquinazolinones such as afloqualone and IC-87114 were well recognized with up to 0. 21 ppm ΔΔδ value.
Chaofei Wu +5 more
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Origin of catalytic activity differences between phosphine and phosphine oxide-based structures in the water-crosslinkable polyalkoxysilane composition [PDF]
Polyolefins Journal, 2021 Organocatalysts have attracted enormous interest in the water-crosslinking reaction in silane-grafted polyolefins (SGPOs) system owing to their simplicity, low toxicity and environmentally benign nature compared to organotin catalysts, which are most ...
Tanaka Shohei, Kenta Adachi
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Membranes, 2022 Gas permeable membranes (GPM) are a promising technology for the capture and recovery of ammonia (NH3). The work presented herein assessed the impact of the capture solution and temperature on NH3 recovery for suspended GPM systems, evaluating at a ...
María Soto-Herranz +3 more
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Cumhuriyet Dental Journal, 2021 Objective: The aim of this study is to evaluate the effect of dentin surface treatments with citric, tartaric, phosphoric, and boric acids on the bonding strength of monolithic zirconia.
Oguzhan Gorler, Melih Ulgey
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Synthesis of Terpineol from Alpha-Pinene Catalyzed by α-Hydroxy Acids
Molecules, 2022 We report the use of five alpha-hydroxy acids (citric, tartaric, mandelic, lactic and glycolic acids) as catalysts in the synthesis of terpineol from alpha-pinene.
Zhong-Lei Meng +5 more
doaj +1 more source
European Oral Research, 2020 Purpose This study aimed to evaluate if the contact of calcium hydroxide cements with polyacrylic and phosphoric acids would alter selected microscopic and physical and chemical properties.
Isabela Dantas Torres De Araújo +4 more
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Frontiers in Dentistry, 2021 Objectives: The aim of the present study was to compare shear bond strength (SBS), adhesive remnant index and enamel cracks in bonding and rebonding of brackets to enamel, conditioned with erbium-doped yttrium aluminium garnet (Er:YAG) laser and ...
Elahe Soltanmohamadi Borujeni +5 more
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Recent advances in the asymmetric phosphoric acid-catalyzed synthesis of axially chiral compounds
Beilstein Journal of Organic Chemistry, 2021 In recent years, the synthesis of axially chiral compounds has received considerable attention due to their extensive application as biologically active compounds in medicinal chemistry and as chiral ligands in asymmetric catalysis.
Alemayehu Gashaw Woldegiorgis +1 more
doaj +1 more source