Results 51 to 60 of about 36,965 (285)

Global catastrophes in earth history: an interdiciplinary conference on impacts, volcanism, and mass mortality.

, 1988
Topics addressed include Cretaceous-Tertiary mass extinctions; geological indicators for meteorite collisions; carbon dioxide catastrophes; volcanism; climatic changes; geochemistry; mineralogy; fossil records; biospheric traumas; stratigraphy ...
Burke, K., B.C., Victoria, Gabriel, Zbynek, Sharpton, V., Stow, D.A.V., Condie, K.C., Mossman, D.J., Iriondo, Martin H., Weisbrod, A., Notholt, A.J., Pasava, Jan, Schidlowski, M., Vandine, D.F., Pinxian, Wang, Dazhong, Sun, Keppie, J.D., Ginsburg, R.N., Lagache, M.   +17 more
core   +1 more source

A Review on Catalytic Nanostructured Electrodes for Wearable and Implantable Abiotic Glucose Fuel Cells

Advanced Science, EarlyView.
This review identifies current and future directions in abiotic nanostructured catalysts to develop reliable and sustainable glucose fuel cells to power the next generation of bioelectronic devices. ABSTRACT The global rise in incidence of chronic diseases has led to the demand for innovative solutions that help patients manage their conditions with ...
Asghar Niyazi, Hannah S. Leese, Benjamin Metcalfe, Mirella Di Lorenzo   +3 more
wiley   +1 more source

Nanoscale Optical Inhomogeneities From Compositional Segregation Within Individual GaN‐on‐Si Quantum Wells

Advanced Science, EarlyView.
This work visualizes local variations in luminescence and relates them to nanoscale chemical inhomogeneities in single InxGa1−xN quantum wells. We demonstrate that the elemental segregation is only inherent to quantum wells with high indium content. Density functional theory shows this to be the result of strain‐induced phase stabilization, explaining ...
Jing‐Yang Chung, Tara P. Mishra, Zackaria Mahfoud, Thomas E. Gage, Jianguo Wen, Katherine P. Rice, Isabelle Martin, Li Zhang, Govindo J. Syaranamual, Stephen J. Pennycook, Silvija Gradečak, Pieremanuele Canepa, Michel Bosman   +12 more
wiley   +1 more source

Magmatic Densities Control Erupted Volumes in Icelandic Volcanic Systems

Frontiers in Earth Science, 2018
Magmatic density and viscosity exert fundamental controls on the eruptibility of magmas. In this study, we investigate the extent to which magmatic physical properties control the eruptibility of magmas from Iceland's Northern Volcanic Zone (NVZ).
Margaret Hartley, Margaret Hartley, John Maclennan   +2 more
doaj   +1 more source

Revealing the Nanoscale Morphology Changes of Polymer Electrolyte Membrane Fuel Cell Catalyst Layers due to Conditioning

Advanced Science, EarlyView.
We apply ex situ and in situ scanning transmission X‐ray microscopy to reveal the structural degradation of polymer electrolyte membrane fuel cell catalyst layers due to conditioning and thermal heating of the catalyst coated membrane. We observe a redistribution of the ionomer and carbon‐black in the catalyst layer, as well as nanoscale membrane ...
Spencer Lytle, Harsharaj B. Parmar, Jian Wang, Shohei Yamashita, Aimy Bazylak   +4 more
wiley   +1 more source

Generation of volcanic ash by basaltic volcanism [PDF]

Journal of Geophysical Research: Solid Earth, 2012
The recent eruptions of Eyjafjallajökull and Grimsvötn volcanoes in Iceland demonstrate the importance of a better understanding of processes leading to the formation of volcanic ash, specifically of fine volcanic ash that poses a threat to air traffic.
Tobias Dürig, Ingo Sonder, Bernd Zimanowski, Hermann Beyrichen, Ralf Büttner   +4 more
openaire   +1 more source

Greener Solvents for the Photoisomerization and Catalytic Heat Release of a Norbornadiene‐Based Molecular Solar Thermal Energy Storage System

Advanced Science, EarlyView.
A Molecular Solar Thermal (MOST) system combining a scalable norbornadiene–quadricyclane photoswitch, a biodegradable solvent, propylene carbonate, and noble and first‐row metal catalysts, is presented. Propylene carbonate boosts photoisomerization quantum yield by 25% compared to toluene, prolongs energy storage by an additional 15 days, and enables ...
Lucien Magson, Helen Hölzel, Rebecca J. Salthouse, Liang Fei, Pedro Ferreira, Vitor A. S. Almodovar, Kasper Moth‐Poulsen, Ignacio Funes‐Ardoiz, Diego Sampedro   +8 more
wiley   +1 more source

Volcanology of tuff rings at Kellyville, Onewhero and Bombay, South Auckland Volcanic Field [PDF]

, 2011
The South Auckland volcanic field hosts 82 volcanic centres over an area of approximately 300 km2 in the Pukekohe, Bombay, Tuakau, Pukekawa and Onewhero regions. The intraplate, monogenetic basaltic volcanic field was active between 1.59 and 0.51 Ma, and
Gibson, April Christina
core  

Eocene volcanism in offshore southern Baffin Bay

, 2015
New data are presented on the offshore part of the West Greenland volcanic succession, part of the North Atlantic Igneous Province located in southern Baffin Bay.
Nelson, Catherine E., Jerram, Dougal A., Clayburn, John, Roberge, Julie, Halton, Alison, Nelson, Catherine, Jerram, Dougal, Clayburn, John A. P., Halton, Alison M.   +8 more
core   +1 more source

Ultrathin Aluminum–Air Batteries via Hygroscopic Electrolytes for Continuous Operation of Imperceptible On‐Skin Electronics

Advanced Energy Materials, EarlyView.
This study presents ultrathin, high‐capacity aluminum‐air batteries (AABs) for self‐sustaining, skin‐conformal electronics. By utilizing ambient moisture and oxygen alongside a LiCl‐based hygroscopic hydrogel electrolyte, the design significantly reduces battery thickness while preventing dehydration and Al self‐corrosion.
Jaeil Park, Inho Lee, Namhee Kim, Wonseok Shin, Joo Sung Kim, Daegun Kim, Giwon Lee, Jinhan Cho, Hoon‐Hee Ryu, Myung‐Han Yoon, Seung Joon Yoo, Woo‐Jin Song, Sungjun Park   +12 more
wiley   +1 more source