Results 41 to 50 of about 3,923 (193)

Precursor Mineral Phases of Forming Mollusk Shell Nacre: A Study of Hydrated Samples

Advanced Functional Materials, EarlyView.
Mineral, organic phase, and water are the essential components in mollusk shell nacre formation. Their interplay is not well understood, because the hydrated material is difficult to observe at high resolution, under close to native conditions. Forming nacre is studied using environmental and cryo‐electron microscopy and hydrated ACC phases, together ...
Anna Kozell, Xiao‐Meng Sui, Neta Varsano, Stephen Weiner, Lia Addadi   +4 more
wiley   +1 more source

Global modeling of withdrawal, allocation and consumptive use of surface water and groundwater resources [PDF]

Earth System Dynamics, 2014
To sustain growing food demand and increasing standard of living, global water withdrawal and consumptive water use have been increasing rapidly. To analyze the human perturbation on water resources consistently over large scales, a number of macro-scale
Y. Wada, D. Wisser, M. F. P. Bierkens
doaj   +1 more source

Insight into the Internal Structure of Biogenic, Synthetic and Geological Apatite by Electron Microscopy and X‐Ray Scattering

Advanced Functional Materials, EarlyView.
Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka, Oleg Prymak, Kateryna Loza, Matthias Epple   +3 more
wiley   +1 more source

Evidence for an active transtensional Beaufort Range fault in the northern Cascadia forearc

Seismica
Geologic records of fault slip in subduction forearcs provide critical data on stress and strain in the upper plate and the seismogenic potential of hazardous faults.
Emerson Lynch, Christine Regalla, Kristin Morell, Nicolas Harrichhausen, Lucinda Leonard   +4 more
doaj   +1 more source

Return levels of temperature extremes in southern Pakistan [PDF]

Earth System Dynamics, 2017
Southern Pakistan (Sindh) is one of the hottest regions in the world and is highly vulnerable to temperature extremes. In order to improve rural and urban planning, it is useful to gather information about the recurrence of temperature extremes.
M. Zahid, R. Blender, V. Lucarini, V. Lucarini, M. C. Bramati   +4 more
doaj   +1 more source

Advances in Stimuli‐Responsive Organic Materials and Polymers toward Intelligent CO2 Capture

Advanced Functional Materials, EarlyView.
Schematic illustration of the relationship between different stimuli and stimuli‐responsive organic materials and polymers for carbon dioxide (CO2) capture. Main stimuli include redox, pH, magnetism, temperature, light, and pressure. Furthermore, multi‐responsive materials, due to their high adaptability and scalability in complex environments, are ...
Jian Zhou, Marc Deissenroth‐Uhrig, Markus Gallei   +2 more
wiley   +1 more source

Towards surface wave tomography with 3D resolution and uncertainty

Seismica
Surface-wave tomography is crucial for mapping upper-mantle structure in poorly instrumented regions such as the oceans. However, data sparsity and errors lead to tomographic models with complex resolution and uncertainty, which can impede meaningful ...
Franck Latallerie, Christophe Zaroli, Sophie Lambotte, Alessia Maggi, Andrew Walker, Paula Koelemeijer   +5 more
doaj   +1 more source

Quantifying uncertainties in soil carbon responses to changes in global mean temperature and precipitation [PDF]

Earth System Dynamics, 2014
Soil organic carbon (SOC) is the largest carbon pool in terrestrial ecosystems and may play a key role in biospheric feedbacks with elevated atmospheric carbon dioxide (CO2) in a warmer future world.
K. Nishina, A. Ito, D. J. Beerling, P. Cadule, P. Ciais, D. B. Clark, P. Falloon, A. D. Friend, R. Kahana, E. Kato, R. Keribin, W. Lucht, M. Lomas, T. T. Rademacher, R. Pavlick, S. Schaphoff, N. Vuichard, L. Warszawaski, T. Yokohata   +18 more
doaj   +1 more source

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

Advanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang, Yu Chen, Ezra Sarmiento, Taige Hao, Atsushi Arakaki, Michiko Nemoto, Pablo Zavattieri, David Kisailus   +7 more
wiley   +1 more source

The point of no return for climate action: effects of climate uncertainty and risk tolerance [PDF]

Earth System Dynamics, 2018
If the Paris Agreement targets are to be met, there may be very few years left for policy makers to start cutting emissions. Here we calculate by what year, at the latest, one has to take action to keep global warming below the 2 K target ...
M. Aengenheyster, Q. Y. Feng, Q. Y. Feng, F. van der Ploeg, H. A. Dijkstra, H. A. Dijkstra   +5 more
doaj   +1 more source