Results 11 to 20 of about 3,644 (285)
American Museum Novitates, 2012 ABSTRACT The deterioration of fossil resins (crazing, cracking, and darkening) was investigated by comparing the effects of one year of accelerated aging—specifically intensive exposure to light, heat, and fluctuating humidity, both individually and in combination—on samples from several natural resin deposits.
Bisulca, Christina +3 more
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Early Miocene coastal taphonomy: piddock and barnacle inclusions from Chiapas amber [PDF]
Acta Palaeontologica PolonicaPiddocks (Pholadidae) are bivalves adapted for boring in substrates such as wood, rocks, and fossil resins. While the trace fossils associated with their boring behavior (Teredolites and Apectoichnus) are well documented, their body fossils are much ...
Błażej Bojarski +2 more
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SOME CHEMICAL CONSTANTS OF FOSSIL RESINS.1 [PDF]
Journal of the American Chemical Society, 1903 n ...
Worstall, R. A.
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Microhardness as a method for investigation of fossil resins [abstract]. [PDF]
Geology, Geophysics & Environment, 2016 Natural fossil resins are products of deciduous and coniferous trees formed at least 40 million years ago. The fact that fossil resins survived until the present day is due to appropriate processes and conditions. One of them is the ability to polymerize.
Dominika Czapla +2 more
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Bibliometric Review of State-of-the-art Research on Microbial Oils’ Use for Biobased Epoxy
Environmental and Climate Technologies, 2023 Epoxy resins are widely used polymers from which a variety of products are derived and applied in many industries. Most epoxy resins are still obtained from mainly fossil feedstocks, such as epichlorohydrin and bisphenol A, which are also highly toxic ...
Feofilovs Maksims +2 more
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Process Superstructure Optimization for Resin and Aromatic Monomer Production from Kraft Lignin
Chemical Engineering Transactions, 2021 Kraft lignin conversion to value-added products is an alternative way to manage the main pulp and paper secondary stream thus contributing to reducing avoid greenhouse gas emissions compared to equivalent fossil-based processes.
Christos Galanopoulos +4 more
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, 2022 Lyubarsky, Georgy Yu., Bukejs, Andris (2022): TwonewfossilspeciesofthegenusAtomariaStephens (Coleoptera:Cryptophagidae) from Eocene European amber with a key to species described from fossil resins.
Lyubarsky, Georgy Yu., Bukejs, Andris
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A review of amber and copal occurrences in Africa and their paleontological significance
BSGF - Earth Sciences Bulletin, 2020 The paleontological interest for fossil plant resins (amber and copal) has greatly increased in the last decades, as field studies have resulted in the discovery of various new deposits worldwide.
Bouju Valentine, Perrichot Vincent
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Species-level determination of closely related araucarian resins using FTIR spectroscopy and its implications for the provenance of New Zealand amber [PDF]
PeerJ, 2015 Some higher plants, both angiosperms and gymnosperms, can produce resins and some of these resins can polymerize and fossilize to form ambers. Various physical and chemical techniques have been used to identify and profile different plant resins and have
Leyla J. Seyfullah +2 more
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Occurrence of polycadinene in fossil and recent resins [PDF]
Geochimica et Cosmochimica Acta, 1994 Abstract Dammars produced by Dipterocarpaceae growing in Southeast Asia are partly composed of a macromolecule with a polycadinene structure. This polymer is the precursor of many specific compounds encountered in crude oils and sediment extracts from South Asia.
Aarssen, B.G.K. +4 more
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