Titlebook: Stingless Bee Nest Cerumen and Propolis, Volume 2; Patricia Vit,Vassya Bankova,David W Roubik Book 2024 The Editor(s) (if applicable) and

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e author also applies his approach to welfare economics. The core problem of ‘new welfare economics,’ developed by Kaldor, Hicks, and Samuelson, is the rationality of social preference. In this book the author translates the social criteria proposed by those three economists into operational forms,

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Propolis of Vietnamese Stingless Bees: Chemistry and Plant Origin. Their chemical profiles revealed source plants: . (Anacardiaceae) in all tested bee samples and several other plant species. . and . used three plant sources each. The chemistry, resin sources, and bioactivity of stingless bee propolis in Vietnam are of importance both for conservation purposes an

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Extraction of , Cerumen, Its Total Phenolic Content, and Antioxidant Activityt resin. Cerumen contains biologically active compounds and offers multiple human health benefits, such as antioxidant and anti-inflammatory properties. Ethanol is commonly used as a solvent for the extraction of these biologically active compounds. In this study, an alternative solvent and macerati

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