Results 11 to 20 of about 4,348,911 (323)

Increased resin collection after parasite challenge: a case of self-medication in honey bees? [PDF]

open access: yesPLoS ONE, 2012
The constant pressure posed by parasites has caused species throughout the animal kingdom to evolve suites of mechanisms to resist infection. Individual barriers and physiological defenses are considered the main barriers against parasites in ...
Michael D Simone-Finstrom, Marla Spivak
doaj   +1 more source

Recent advances in Fenton-like treatment of radioactive ion exchange resins

open access: yesChemical Engineering Journal Advances, 2023
Ion exchange resins (IERs) are widely used to remove radioactive contaminants from various commercial nuclear power plant systems. After the completion of their useful life cycle, IERs are removed from the nuclear facility and are known as spent resins ...
Muhammad Aamir Hafeez   +6 more
doaj   +1 more source

Tree resin composition, collection behavior and selective filters shape chemical profiles of tropical bees (Apidae: Meliponini). [PDF]

open access: yesPLoS ONE, 2011
The diversity of species is striking, but can be far exceeded by the chemical diversity of compounds collected, produced or used by them. Here, we relate the specificity of plant-consumer interactions to chemical diversity applying a comparative network ...
Sara D Leonhardt   +2 more
doaj   +1 more source

Preparation and Properties of Plant-Oil-Based Epoxy Acrylate-Like Resins for UV-Curable Coatings

open access: yesPolymers, 2020
Novel oil-based epoxy acrylate (EA)-like prepolymers were synthesized via the ring-opening reaction of epoxidized plant oils with a new unsaturated carboxyl acid precursor (MAAMA) synthesized by reacting maleic anhydride (MA) with methallyl alcohol (MAA).
Jijun Tang   +11 more
semanticscholar   +1 more source

Removal of fluoride from coke wastewater by aluminum doped chelating ion-exchange resins: a tertiary treatment

open access: yesEnvironmental science and pollution research international, 2021
Coke wastewater is one of the most problematic industrial wastewaters, due to its large volume and complex pollutant load. In this study, ion exchange technology was investigated with the objective of reducing the fluoride content of the effluent from a ...
J. Rodríguez-Iglesias   +3 more
semanticscholar   +1 more source

Detection of Active Compounds in the Aqueous Extract of the Plant Leaves for Eriobotrya Japonica and Study the Effect of the Extract as an Antioxidant [PDF]

open access: yesEngineering and Technology Journal, 2016
This study was done for the purpose of detecting the active compounds in the aqueous extract of the plant leaves for Eriobotrya japonica that is one of evergreen plants and medicinal plants, which has the advantage, that possess therapeutic properties ...
Majid Sakhi Jaber   +2 more
doaj   +1 more source

Influence of crosslinking density on the mechanical and thermal properties of plant oil-based epoxy resin

open access: yesRSC Advances, 2022
Plant oil-based epoxy resins are of great interest due to their ecological and economic necessity. Previous studies suggested that the crosslinking density had a considerable influence on the mechanical and thermal properties of plant oil-based epoxy ...
Jinrui Huang   +5 more
semanticscholar   +1 more source

An insight into the botanical origins of propolis from permanent preservation and reforestation areas of southern Brazil

open access: yesScientific Reports, 2021
Brown propolis from permanent preservation and reforestation areas of southern Brazil have attracted international commercial interest and have a unique composition, although little is known about their botanical origins, which are the plant resins used ...
Alan Giovanini de Oliveira Sartori   +6 more
doaj   +1 more source

Stingless bees as collectors of resin from Bertholletia excelsa Bonpland (Lecythidaceae)

open access: yesEntomological Communications, 2023
Stingless bees build their nests using, in general, clay, wax and resins; in addition, these bees also use resins for defense against natural enemies and as an antimicrobial agent.
Iris A. Cruz, Paulo C. S. Barroso
doaj   +1 more source

Photoinitiator Free Resins Composed of Plant-Derived Monomers for the Optical µ-3D Printing of Thermosets

open access: yesPolymers, 2019
In this study, acrylated epoxidized soybean oil (AESO) and mixtures of AESO and vanillin dimethacrylate (VDM) or vanillin diacrylate (VDA) were investigated as photosensitive resins for optical 3D printing without any photoinitiator and solvent.
M. Lebedevaite   +3 more
semanticscholar   +1 more source

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