We report the direct conversion of mixed carboxylic acids to C-C olefins with up to 60 mol% carbon yield through cascade (cross) ketonization, (cross) aldolization and self-deoxygenation reactions. Co-feeding hydrogen provides an additional ketone hydrogenation/dehydration pathway to a wider range of olefins.
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http://dx.doi.org/10.1039/c5cc10528e | DOI Listing |
J Food Sci
January 2025
School of Life Sciences and Chemistry, Minnan Science and Technology College, Quanzhou, Fujian, China.
Polyphenols are known to interact with starch to form the V-type inclusion complex or the noninclusive complex. It is hypothesized that the addition of polyphenols could improve the properties of Chinese yam (Dioscorea opposita Thunb.) starch, and the properties of the complexes could be regulated by controlling the additive amount of polyphenols.
View Article and Find Full Text PDFBull Environ Contam Toxicol
January 2025
School of Mathematics and Physics, Xi'an Jiaotong-Liverpool University, Suzhou, Jiangsu, 215123, China.
This study focuses on the composition and sources of dissolved organic matter (DOM) in the Fancun Reservoir, located in Ningguo City, Anhui Province, China. The investigation was conducted by analyzing the spectral characteristics of DOM using UV-Vis absorption spectra and fluorescence spectroscopy. The humic substances were dominated by fulvic acid, with an average DOM concentration of 30.
View Article and Find Full Text PDFBull Environ Contam Toxicol
January 2025
Centro de Investigaciones en Bioquímica Clínica e Inmunología-CIBICI, Facultad de Ciencias Químicas, CONICET, Universidad Nacional de Córdoba, Haya de La Torre Esq., Medina Allende, 5000, Córdoba, Argentina.
The co-occurrence of pesticides in aquatic ecosystems highlights the need for studies investigating their potential toxicity as mixtures to the aquatic biota. Well-designed studies are essential to assess the presence and toxicity of relevant pesticide mixtures, particularly those such as the chloroacetamide herbicide metolachlor (MET), the triazole fungicide epoxiconazole (EP) and the diamide anthranilic insecticide chlorantraniliprole (CAP), which have not been previously tested, and whose co-occurrence is possible in waters close to cultivated areas. A solid phase extraction ultra-performance liquid chromatography-tandem quadrupole mass spectrometry method was developed to quantify equivalent toxicity concentrations for CAP, EP, and MET in artificial freshwater during acute toxicity tests.
View Article and Find Full Text PDFThe Aim Of The Study: Was to elaborate and assess biocompatible compositions based on oligocarbonate methacrylate filled with hydroxyapatite.
Materials And Methods: The manufacturing methods of the compositions are considered, and their polymerization ability, strength and elastic properties are evaluated.
Results: The highest values of hardness and elasticity were found in the composition containing 0.
Br J Hosp Med (Lond)
December 2024
Department of Neurology, Huai'an Hospital of Huai'an City, Huai'an, Jiangsu, China.
Postherpetic neuralgia (PHN) is a common chronic pain disease that persists after the rash (clusters of clear blisters on the surface of the skin) has healed, adversely affecting the quality of life of affected patients. Gabapentin (GPT) and pregabalin (PGB) are two commonly used drugs for the treatment of PHN, but there have been broad concerns regarding their efficacy and safety. Thus, this retrospective cohort study was conducted to investigate the effectiveness and safety of GPT versus PGB in the treatment of PHN.
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