Results 21 to 30 of about 22,106 (292)

Amber imitation? Two unusual cases of Pinus resin-coated beads in Iberian Late Prehistory (3rd and 2nd millennia BC) [PDF]

, 2019
A group of beads from the artificial cave of La Molina (Lora de Estepa, Sevilla) and Cova del Gegant (Sitges, Barcelona) were made from a biogenic raw material and intentionally covered by a layer of resin.
Avilés Escaño, Miguel Ángel, Daura, Joan, Garrido Cordero, José Ángel, Martínez Blanes, José María, Odriozola Lloret, Carlos Patricio, Sanz, Montserrat   +5 more
core   +2 more sources

First whiteflies from the Eocene amber of Denmark [PDF]

Acta Palaeontologica Polonica
One new genus Gregorites Drohojowska & Szwedo with seven new species of whiteflies (Aleyrodidae) from Eocene amber collected in Denmark are described. All new taxa: Gregorites aegiri, G. bergelmiri, G. skadii, G. bestlae, G. thrymi, G.
Jowita Drohojowska, Joanna Śladowska, Jacek Szwedo   +2 more
doaj   +1 more source

A Review of Bio-Based Adhesives from Primary and Secondary Biomass for Wood Composite Applications

Environmental and Climate Technologies, 2022
Today there is a great demand in the market of wood-based panels like medium density fibreboard (MDF), plywood and oriented strand board (OSB). These boards provide functionality in various industrial fields from building to furniture production. All are
Vamza Ilze, Krigers Guntars, Valters Karlis   +2 more
doaj   +1 more source

125th anniversary review: fuel alcohol: current production and future challenges [PDF]

, 2011
Global research and industrial development of liquid transportation biofuels are moving at a rapid pace. This is mainly due to the significant roles played by biofuels in decarbonising our future energy needs, since they act to mitigate the deleterious ...
Walker, Graeme M.
core   +3 more sources

Recent trends and developments in pyrolysis-gas chromatography: review [PDF]

, 2008
Pyrolysis-gas chromatography (Py-GC) has become well established as a simple, quick and reliable analytical technique for a range of applications including the analysis of polymeric materials.
Arias, Armitage, Aslan, Asperger, Asperger, Asperger, Asperger, Bertini, Beyer, Blackledge, Blokker, Bonaduce, Bruck, Buckley, Buco, Campbell, Casas-Catalán, Causin, Challinor, Challinor, Challinor, Chang, Chiavari, Choi, Choi, Colombini, De Koeijer, De la Cruz-Canizares, Dignac, Doménech-Carbó, Doménech-Carbó, Dunn, Dzierzega-Lecznar, Dzierzega-Lecznar, Egan, Erickson, Evans, Evans, Fabbri, Fabbri, Fanter, Fifield, Flodin, Garcette-Lepecq, Gleixner, González-Vila, Goodacre, Greenwood, Greenwood, Greenwood, Greenwood, Guo, Gupta, Göbbels, Gözet, Halket, Halket, Heffenden, Herrera, Horrocks, Ikeya, Ishikawa, Islas, Jakab, Jamin, Jansson, Jarde, Jia, Jin, Jose Gonzalez-Rodriguez, Karina L. Sobeih, Kechang, Kochanowski, Kumooka, Lattimer, Lazaro, Learner, Levy, Li, Ling, Liu, Mao, Marinari, Marinari, Mark Baron, Marques, Maynard, Meruva, Metz, Moldoveanu, Mowry, Munson, Mäkinen, Nierop, Odermatt, Odermatt, Oguz, Ohshima, Osete-Cortina, Osete-Cortina, Osete-Cortina, Park, Parsi, Parsi, Parsi, Parsi, Partouche, Pasch, Peacock, Pel, Pel, Perng, Perng, Petsch, Poerschmann, Poirier, Prasad, Prati, Raghavan, Raulin, Ristau, Ristolainen, Rodriguez, Ross, Räisänen, Sakayanagi, Scalarone, Schmidt, Schwarzinger, Sephton, Sessions, Snyder, Stauffer, Stout, Stout, Stout, Suelves, Sugden, Sun, Sundarrajan, Suuronen, Takayasu, Takayasu, Tanczos, Thomsen, Tsai, Tsuge, Tsuge, Tzamtzis, Urakami, Uyar, Uyar, Vanderborgh, Volkman, Wampler, Wampler, Wampler, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, White, Wilkes, Wilkes, Yamamoto, Yang, Yaylayan, Yinon, Zhang, Zhou, Zhu, Zimmerman, Zlotnick, Çoban-Yildiz, Łakomy   +179 more
core   +1 more source

The oldest lagonomegopid spider, a new species in Lower Cretaceous amber from Álava, Spain

Geologica Acta, 2006
The new species Burlagonomegops alavensis (Araneae: Lagonomegopidae) is described from Lower Cretaceous (Aptian) amber from Álava (Basque Country), Spain.
D. PENNEY
doaj   +1 more source

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., de Leeuw, J.W., Collinson, M., Boon, J.J., Goth, K.   +4 more
openaire   +2 more sources

Selective flotation of fossil resin from western coal [PDF]

, 1991
The test program has demonstrated that: (1) technically, the new flotation technologies discovered at the University of Utah and then improved upon by Advanced Processing Technologies, Inc. provide a highly efficient means to selectively recover fossil resin from coal.
Jensen, G. F., Miller, J. D.
openaire   +6 more sources

Natural resins

Conservar Património, 2005
A short description of the origin, physical properties, classification and chemical composition of the most abundant natural resins from trees and plants is presented, some of which have been used since immemorial times as adhesives and coatings.
Bárbara Gigante
doaj   +1 more source

Unlocking preservation bias in the amber insect fossil record through experimental decay. [PDF]

, 2018
Fossils entombed in amber are a unique resource for reconstructing forest ecosystems, and resolving relationships of modern taxa. Such fossils are famous for their perfect, life-like appearance.
A Henwood, A Henwood, A Henwood, A Ross, AD Butler, Arnoud Boom, B Erkosar, BA Stankiewicz, Betsy Foxman, C Lozupone, C Soriano, Carmen Soriano, CE Shannon, CW Beck, D Azar, D Coty, D Penney, D Penney, D Penney, DE Briggs, DE Briggs, Dong Hoon Shin, DR Lovley, EC Raff, G Poinar Jr, G Poinar Jr, GO Poinar, GO Poinar Jr, HJD Dorman, J Lambert, J Lambert, J Stewart, JA Navas-Molina, JB Lambert, JB Lambert, JB Lambert, JB Lambert, LM Hedges, ME Williams, Mirko Pegoraro, MM Solórzano Kraemer, MT Baratta, N Bouzouita, N Broderick, OO Sonibare, P Jaccard, PJ McMurdie, PR Wilby, PR Wilby, S Hamm, S Hamm, S Hamm, Sarah E. Gabbott, Ting Luo, V Perrichot, V Perrichot, VE McCoy, Victoria E. McCoy, WH Kruskal, X Delclòs, X Martínez-Delclòs   +60 more
core   +3 more sources