Results 51 to 60 of about 26,495 (287)

Modeling ice‐ocean interaction in ice‐shelf crevasses [PDF]

Journal of Geophysical Research: Oceans, 2014
AbstractOcean freezing within ice‐shelf basal crevasses could potentially act as a stabilizing influence on ice shelves; however, ice‐ocean interaction and ocean dynamics within these crevasses are as yet poorly understood. To this end, an idealized 2‐D model of an ice‐shelf basal crevasse has been developed using Fluidity, a finite‐element ocean model
Jordan, J.R., Holland, P.R., Jenkins, A., Piggott, M.D., Kimura, S.   +4 more
openaire   +6 more sources

Ocean wave blocking by periodic surface rolls fortifies Arctic ice shelves

Journal of Glaciology, 2023
The Ward Hunt and Milne ice shelves are the present-day remnants of a much larger ice shelf that once fringed the coast of Ellesmere Island, Canada. These ice shelves possess a unique surface morphology consisting of wave-like rolls that run parallel to ...
Peter Nekrasov, Douglas R. MacAyeal
doaj   +1 more source

Implementing BMP‐7 Chemically Modified RNA for Bone Regeneration with 3D Printable Hyaluronic Acid‐Collagen Granular Gels

Advanced Healthcare Materials, EarlyView.
This study developed 3D‐printable THA‐Col microgels for delivering BMP‐7 cmRNA. The key result is that hMSCs transfected on the biomaterials showed BMP‐7 secretion levels comparable to pre‐transfected hMSCs, therefore introducing a cmRNA‐activated matrix to promote bone healing.
Daphne van der Heide, Claudia del Toro Runzer, Elena Della Bella, Christian Plank, Martijn van Griensven, Elizabeth Rosado Balmayor, Martin J. Stoddart, Matteo D'Este   +7 more
wiley   +1 more source

Ice-shelf Response to Ice-stream Discharge Fluctuations: II. Ideal Rectangular Ice Shelf [PDF]

Journal of Glaciology, 1988
AbstractAbstract. Ice-shelf thickness and velocity anomalies resulting from ice-stream discharge fluctuations are calculated for an ideal ice shelf fed by a single ice stream and confined within a rectangular coastal geometry. Ice-shelf response to periodic forcing is found to be linear (thickness and velocity anomalies oscillate at the forcing ...
Douglas R. MacAyeal, Manfred A. Lange
openaire   +2 more sources

Biomimetic Cell Membrane‐Coated Scaffolds for Enhanced Tissue Regeneration

Advanced Materials, EarlyView.
This review examines the development and use of cell membrane‐coated scaffolds in tissue engineering. Bioinspired phospholipid and glycocalyx coatings enhance anti‐fouling, anti‐thrombogenic, and selective molecular recognition properties. Native cell membrane coatings further support cell‐specific interactions, immune modulation, and reduced bacterial
Carmen Alvarez‐Lorenzo, Alejandro Ramirez‐Romero, Diana Peixoto, Maria Vivero‐Lopez, Isabel Rodríguez‐Moldes, Angel Concheiro   +5 more
wiley   +1 more source

Influence of basal melting on ice surface fracture and glacier retreat: A case study at Pine Island Glacier [PDF]

Polish Polar Research
Pine Island Glacier (PIG) is one of the most dynamic ice streams in West Antarctica, with significant basal melting and ice shelf retreat profoundly influencing its behavior.
Boya Yan, Baojun Zhang, Pei Jiang, Qian Li, Yunsi Wu, Mingliang Liu   +5 more
doaj   +1 more source

Ice Velocity Variations of the Cook Ice Shelf, East Antarctica, from 2017 to 2022 from Sentinel-1 SAR Time-Series Offset Tracking

Remote Sensing, 2023
The Cook Glacier drains a significant portion of the Wilkes Subglacial Basin, the largest subglacial basin in East Antarctica—which feeds the Cook Ice Shelf.
Siung Lee, Seohyeon Kim, Hyunjun An, Hyangsun Han   +3 more
doaj   +1 more source

Microfluidic Platform with Local Oxygen Sensors Demonstrates That 3D Blood Vessel Networks Exhibit Time‐Dependent Changes in Oxygen Concentrations During Their Formation and Perfusion

Advanced Materials Technologies, EarlyView.
Novel OoC platform with functional vascular networks highlights challenges in oxygenation. This study uses optical oxygen sensors to monitor oxygen during vascular formation, revealing perfusion limitations and highlighting the need for better oxygenation strategies.
Tarek Gensheimer, Stefanie Fuchs, Laura E. de Heus, Kim Vermeul, Torsten Mayr, Andries v.d. Meer   +5 more
wiley   +1 more source

Decadal Variability of Ice‐Shelf Melting in the Amundsen Sea Driven by Sea‐Ice Freshwater Fluxes

Geophysical Research Letters
The ice streams flowing into the Amundsen Sea, West Antarctica, are losing mass due to changes in oceanic basal melting of their floating ice shelves. Rapid ice‐shelf melting is sustained by the delivery of warm Circumpolar Deep Water to the ice‐shelf ...
Michael Haigh, Paul R. Holland
doaj   +1 more source

Neutrophil Macrophage Crosstalk via Extracellular Vesicles Drives Reverse Migration in a Fully Human Model of Wound Healing

Advanced Science, EarlyView.
A novel microphysiological system that can mimic sterile or non‐sterile injury demonstrates that macrophage‐derived extracellular vesicles modulate neutrophil migratory responses to these different wound states. The model showed that resolution of inflammation through neutrophil reverse migration is driven by IL‐8 derived from extracellular vesicles ...
Kehinde Adebayo Babatunde, Oluwadamilola Fatimat Babatunde, Adeel Ahmed, Wilmara Salgado‐Pabon, David J Beebe, Sheena C. Kerr   +5 more
wiley   +1 more source