Results 101 to 110 of about 1,337,857 (345)

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

open access: yesThe 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   +3 more
doaj   +1 more source

Ocular Shock Front in the Colliding Galaxy IC 2163 [PDF]

open access: yes, 2016
ALMA observations in the CO 1 - 0 line of the interacting galaxies IC 2163 and NGC 2207 at 2" x 1.5" resolution reveal how the encounter drives gas to pile up in narrow, ~ 1 kpc wide, "eyelids" in IC 2163. IC 2163 and NGC 2207 are involved in a grazing encounter, which has led to development in IC 2163 of an eye-shaped (ocular) structure at mid-radius ...
arxiv   +1 more source

Transmembrane Activation of Catalysis and Protein Refolding in Synthetic Cells by Enzymes and Nanozymes

open access: yesAdvanced Functional Materials, EarlyView.
Synthetic cells are engineered herein to respond to an external chemical messenger by the activation of intracellular catalysis. The chemical messenger molecules are catalytically generated by an extracellular enzyme or a mineral surface, whereas the intracellular catalysis emerges via direct enzyme activation or via protein refolding.
Dante G. Andersen   +5 more
wiley   +1 more source

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

open access: yesAnnals 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   +2 more
doaj   +1 more source

Modeling ice stream flow [PDF]

open access: yesEos, Transactions American Geophysical Union, 2011
Ice flow speed within an ice sheet can vary from a few meters to thousands of meters per year. Fast flowing ice streams can affect sea level, and their flow variation is one factor that determines whether an ice sheet is gaining or losing mass. But different ice streams exhibit different behaviors, and these spatial and temporal variations are not well
openaire   +1 more source

High‐Throughput Microfluidic‐Mediated Assembly of Layer‐By‐Layer Nanoparticles

open access: yesAdvanced Functional Materials, EarlyView.
The layer‐by‐layer (LbL) assembly of polymer films on nanoparticle (NP) surfaces is a promising technique for targeted drug delivery. Despite its success in preclinical mouse models, a current good manufacturing practices (cGMP) compliant, clinical‐scale production method has been lacking.
Ivan S. Pires   +4 more
wiley   +1 more source

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

open access: yesGeophysical 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   +7 more
doaj   +1 more source

A Wireless Cortical Surface Implant for Diagnosing and Alleviating Parkinson's Disease Symptoms in Freely Moving Animals

open access: yesAdvanced Healthcare Materials, EarlyView.
A wireless cortical surface implant employing graphene electrode arrays diagnoses and alleviates Parkinson's disease symptoms in freely moving animals. The device continuously monitors cortical activity and delivers targeted stimulation, restoring beta–gamma and delta oscillations.
Hongseong Shin   +15 more
wiley   +1 more source

Integration of Bioengineered Tools in Assisted Reproductive Technologies

open access: yesAdvanced Healthcare Materials, EarlyView.
A conceptual illustration depicting the collaboration between a medical professional (right) and a scientist (left). Their connection highlights the integration of scientific research and clinical practice. This representation underscores the role of emerging technologies in bridging fundamental research with applied reproductive healthcare.
Aslı Ak   +3 more
wiley   +1 more source

Materials Advances in Devices for Heart Disease Interventions

open access: yesAdvanced Materials, EarlyView.
This review examines the crucial role of materials in heart disease interventions, focusing on strategies for monitoring, managing, and repairing heart conditions. It discusses the material requirements for medical devices, highlighting recent innovations and their impact on cardiovascular health.
Gagan K. Jalandhra   +11 more
wiley   +1 more source

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