Results 31 to 40 of about 313,187 (299)

A multi-sensor approach for volcanic ash cloud retrieval and eruption characterization: the 23 November 2013 Etna lava fountain [PDF]

, 2016
Volcanic activity is observed worldwide with a variety of ground and space-based remote sensing instruments, each with advantages and drawbacks. No single system can give a comprehensive description of eruptive activity, and so, a multi-sensor approach
Carboni, Elisa, Coltelli, Mauro, Corradini, Stefano, Grainger, Roy G., Guerrieri, Lorenzo, Marzano, FRANK SILVIO, Merucci, Luca, Montopoli, Mario, Prestifilippo, Michele, Pugnaghi, Sergio, Ricci, Matteo, Scollo, Simona, Ventress, Lucy J., Vulpiani, Gianfranco   +13 more
core   +3 more sources

Origin Authentication of European and American Ash (Fraxinus spp.) Based on Stable Isotope Ratio and Elemental Characteristics Combined with Chemometrics Methods

Chemosensors, 2023
The research into and applications of wood origin traceability technology are of great significance for promoting the standardization and legality of the global timber trade.
Haibo Wang, Huahong Liu, Bo Lu, Ming Ma, Jianguo Chen, Jinfang Nie   +5 more
doaj   +1 more source

Volcanic ash layer depth: processes and mechanisms [PDF]

, 2014
The long duration of the 2010 Eyjafjallajökull eruption provided a unique opportunity to measure a widely dispersed volcanic ash cloud. Layers of volcanic ash were observed by the European Aerosol Research Lidar Network with a mean depth of 1.2 km and ...
A. L. M. Grant, Anderson, Ansmann, Arason, Balluch, Brown, Colette, Costa, D. J. Thomson, Dacre, Dacre, Devenish, Ellrod, F. Marenco, Flentje, Grant, H. F. Dacre, H. N. Webster, Hall, Haynes, Jones, Legras, Marenco, Marenco, Mona, N. J. Harvey, Newell, Newell, Pappalardo, Roach, Rose, Schumann, Schumann, Sillman, Sparks, Stoller, Thouret   +36 more
core   +1 more source

The Relationship between Fungal Diversity and Invasibility of a Foliar Niche—The Case of Ash Dieback

Journal of Fungi, 2020
European ash (Fraxinus excelsior) is threatened by the invasive ascomycete Hymenoscyphus fraxineus originating from Asia. Ash leaf tissues serve as a route for shoot infection but also as a sporulation substrate for this pathogen.
Ahto Agan, Rein Drenkhan, Kalev Adamson, Leho Tedersoo, Halvor Solheim, Isabella Børja, Iryna Matsiakh, Volkmar Timmermann, Nina Elisabeth Nagy, Ari Mikko Hietala   +9 more
doaj   +1 more source

Stable overexpression and targeted gene deletion of the causative agent of ash dieback Hymenoscyphus fraxineus

Fungal Biology and Biotechnology, 2023
Background Due to the infection with the invasive ascomycete Hymenoscyphus fraxineus, which has been replacing the closely related and non-pathogenic native Hymenoscyphus albidus, the European ashes, Fraxinus excelsior (also known as the common ash ...
Tobias Lutz, Birgit Hadeler, Mareike Jaeckel, Barbara Schulz, Cornelia Heinze   +4 more
doaj   +1 more source

Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete

Developments in the Built Environment, 2023
This work investigates the cementing efficiency, determined by the k-value, of a Brazilian fly ash. The analyzed variables are the fly ash fineness and content, the water content in the mixtures and age of concrete. Further, the influence of the fineness
Margareth da Silva Magalhães, Bruna Figueiredo Cezar, Pedro Rodrigues Lustosa   +2 more
doaj   +1 more source

Validation of ASH Optical Depth and Layer Height from IASI using Earlinet Lidar Data

EPJ Web of Conferences, 2016
The 2010 eruptions of the Icelandic volcano Eyjafjallajökull attracted the attention of the public and the scientific community to the vulnerability of the European airspace to volcanic eruptions.
Balis D., Siomos N., Koukouli M., Clarisse L., Carboni E., Ventress L., Grainger R., Mona L., Pappalardo G.   +8 more
doaj   +1 more source

Computational Results of the Ecotoxic Analysis of Fly and Bottom Ash from Oil Shale Power Plants and Shale Oil Production Facilities

Chemical Engineering Transactions, 2020
In Estonia, oil shale ash was considered as hazardous waste until the end of 2019 mainly due to its high content of calcium oxide. This limited the use and export of the produced ash.
Heidi Lees, Oliver Järvik, Alar Konist, Andres Siirde, Birgit Maaten   +4 more
doaj   +1 more source

Estimating the frequency of volcanic ash clouds over northern Europe [PDF]

, 2016
Fine ash produced during explosive volcanic eruptions can be dispersed over a vast area, where it poses a threat to aviation, human health and infrastructure. Here, we focus on northern Europe, which lies in the principal transport direction for volcanic
Akaike, Bebbington, Bevilacqua, Blockley, C.B. Connor, Chambers, Connor, Connor, Connor, Costa, Cox, Davies, Davies, De Vleeschouwer, Dugmore, Dugmore, Dugmore, Dugmore, Dzierma, E.J. Watson, Folch, Folch, G.T. Swindles, Gjerløw, Haflidason, Hall, Hall, Hall, Hayward, I.P. Savov, I.T. Lawson, J.A. Wilson, Jensen, Jochum, Jull, Lacasse, Larsen, Larsen, Lawson, Lowe, Mason, Mohn, Newhall, Newton, Pilcher, Pollard, Ponomareva, Pyle, Reilly, Schmidt, Smith, Stevenson, Swindles, Swindles, Thorarinsson, Thordarson, Wastegård, Watson, Wilson, Wulf   +59 more
core   +3 more sources

An enhanced qPCR method for rapid Agrilus planipennis detection and monitoring [PDF]

NeoBiota
Emerald ash borer (EAB; Agrilus planipennis) represents a serious threat to North American and European ash species (Fraxinus spp.). Spread of EAB westwards, from European Russia and Eastern Ukraine, could lead to dramatic consequences for native ...
Quirin Kupper, Donnie L. Peterson, Leandra C. Fritsi, Doris Hölling, Anouchka Perret-Gentil, Francesco Pecori, Denise Altenbach, Marco Giulio, Helen Zbinden, Salome Schneider, Beat Ruffner   +10 more
doaj   +3 more sources