Results 51 to 60 of about 56,567 (254)

Multi-decadal evolution of Crary Ice Rise region, West Antarctica, amid modern ice-stream deceleration

Journal of Glaciology
The ongoing deceleration of Whillans Ice Stream, West Antarctica, provides an opportunity to investigate the co-evolution of ice-shelf pinning points and ice-stream flux variability.
Hannah Verboncoeur, Matthew Ross Siegfried, Nicholas Holschuh, Jeremy Paul Winberry, Duncan Byrne, Wilson Sauthoff, Tyler Clark Sutterley, Brooke Medley   +7 more
doaj   +1 more source

Contrasts in hydrology between regions of basal deformation and sliding beneath Rutford Ice Stream, West Antarctica, mapped using radar and seismic data

Geophysical Research Letters, 2008
Spatially coincident radar and seismic data collected two weeks apart on Rutford Ice Stream were analyzed to investigate the mechanical and hydrological characteristics of the ice‐bed interface.
T. Murray, H. Corr, A. Forieri, A. M. Smith   +3 more
doaj   +1 more source

Surface undulations of Antarctic ice streams tightly controlled by bedrock topography [PDF]

The Cryosphere, 2013
Full Stokes flow-line models predict that fast-flowing ice streams transmit information about their bedrock topography most efficiently to the surface for basal undulations with length scales between 1 and 20 times the mean ice thickness.
J. De Rydt, G. H. Gudmundsson, H. F. J. Corr, P. Christoffersen   +3 more
doaj   +1 more source

Tremor during ice stream stick-slip [PDF]

The Cryosphere, 2015
Abstract. During the 200 km-scale stick slip of the Whillans Ice Plain (WIP), West Antarctica, seismic tremor episodes occur at the ice–bed interface. We interpret these tremor episodes as swarms of small repeating earthquakes. The earthquakes are evenly spaced in time and this even spacing gives rise to spectral peaks at integer multiples of the ...
B. P. Lipovsky, E. M. Dunham
openaire   +3 more sources

Oxygen Supply of Islets of Langerhans by Photosynthetically Active Microalgae in Bioprinted Co‐Cultures Maintains Their Function in a Hypoxic Environment

Advanced Healthcare Materials, EarlyView.
This study developed a bioprinted co‐culture system embedding rat pancreatic islets and Scenedesmus sp. microalgae spatially defined in close vicinity. Red light was found optimal to ensure microalgal photosynthesis while maintaining islet viability and functionality. A tailored co‐culture medium supported both cell types.
Finn Dani, Sarah Duin, Ashwini Rahul Akkineni, Susann Lehmann, Barbara Ludwig, Michael Kühl, Michael Gelinsky, Anja Lode   +7 more
wiley   +1 more source

Temporal variations in the flow of a large Antarctic ice stream controlled by tidally induced changes in the subglacial water system [PDF]

The Cryosphere, 2015
Observations show that the flow of Rutford Ice Stream (RIS) is strongly modulated by the ocean tides, with the strongest tidal response at the 14.77-day tidal period (Msf). This is striking because this period is absent in the tidal forcing.
S. H. R. Rosier, G. H. Gudmundsson, J. A. M. Green   +2 more
doaj   +1 more source

Poking Pluripotency: Nanoinjection Into Human iPSCs

Advanced Materials, EarlyView.
Nanoinjection into hiPSCs: silicon nanotubes effectively transfect human induced pluripotent stem cells (hiPSCs) with mRNA, enabled by a delayed extracellular matrix application and enhanced surface functionalization. Nanoinjection is demonstrated with several reporter mRNA, including co‐transfection of mCherry and GFP.
Jann Harberts, Vuong Thi Thanh Xuan Ho, Yuqi Yang, Yuan Jiang, Roey Elnathan, Nicolas H. Voelcker   +5 more
wiley   +1 more source

Catch, Release, Repeat: Reversible Protein Capture in Electric Fields Using Antifouling Polymer Brushes

Advanced Materials Interfaces, EarlyView.
ABSTRACT Capturing proteins is easy since their amphiphilic nature allows them to bind to almost any surface. Because of this, releasing them is challenging since various interactions need to be considered for this. We present a simple method to reversibly adsorb proteins on stabilized electrodes.
Erik J. Postma, Andriy R. Kuzmyn, Karin Schroën, Sissi de Beer   +3 more
wiley   +1 more source

Double Reflections in Polarized Radar Data Reveal Ice Fabric in the North East Greenland Ice Stream

Geophysical Research Letters
The orientation of ice crystals within large ice masses has a strong influence on their mechanical properties, but cannot be directly observed from the surface.
Niels F. Nymand, David A. Lilien, Tamara A. Gerber, Christine S. Hvidberg, Daniel Steinhage, Prasad Gogineni, Drew Taylor, Dorthe Dahl‐Jensen   +7 more
doaj   +1 more source

Basal topographic controls on the stability of the West Antarctic ice sheet: lessons from Foundation Ice Stream

Annals of Glaciology, 2017
Using observations of basal topography, ice thickness and modern accumulation rates, we use theory and a dynamic flowline model to examine the sensitivity of Antarctica's Foundation Ice Stream to changes in sea level, accumulation and buttressing at the ...
Kathleen Huybers, Gerard Roe, Howard Conway   +2 more
doaj   +1 more source