Results 51 to 60 of about 6,415 (289)

Microstructure-based simulations of the viscous densification of snow and firn [PDF]

The Cryosphere
Accurate models for the viscous densification of snow (understood here as a density below 550 kg m−3) and firn (a density above 550 kg m−3) under mechanical stress are of primary importance for various applications, including avalanche prediction and the
K. Fourteau, K. Fourteau, J. Freitag, M. Malinen, H. Löwe   +4 more
doaj   +1 more source

A particle based simulation model for glacier dynamics [PDF]

, 2013
A particle-based computer simulation model was developed for investigating the dynamics of glaciers. In the model, large ice bodies are made of discrete elastic particles which are bound together by massless elastic beams.
Timonen, J., Moore, J. C., J. A. Åström, T. Zwinger, Astrom, J. A., D. Benn, J. C. Moore, Zwinger, T., Tallinen, T., T. Tallinen, T. I. Riikilä, Benn, D., J. Timonen, Riikila, T. I.   +13 more
core   +1 more source

Nanorheology of Interfacial Water during Ice Gliding

Physical Review X, 2019
The slipperiness of ice is an everyday-life phenomenon, which, surprisingly, remains controversial despite a long scientific history. The very small friction measured on ice is classically attributed to the presence of a thin self-lubricating film of ...
L. Canale, J. Comtet, A. Niguès, C. Cohen, C. Clanet, A. Siria, L. Bocquet   +6 more
doaj   +1 more source

Validation of oil spill transport and fate modeling in Arctic ice

Arctic Science, 2018
Reliability of oil spill modeling in Arctic waters for response planning and risk assessments depends on the accuracy of winds, currents, and ice data (cover and drift) used as input.
Deborah P. French-McCay, Tayebeh Tajalli-Bakhsh, Kathy Jayko, Malcolm L. Spaulding, Zhengkai Li   +4 more
doaj   +1 more source

Rheology of ice at the bed of Engabreen, Norway [PDF]

Journal of Glaciology, 2000
AbstractA three-dimensional finite-element model is used to analyze field data collected as dirty basal ice flowed past an instrumented obstacle at the bed of Engabreen, a temperate glacier in northern Norway The ice is modeled as an incompressible power-law fluid, with viscosity , where ΠD is the second invariant of the stretching tensor, and B and n ...
openaire   +1 more source

Implementation of a Maxwell Elasto-Brittle Rheology in a Sea Ice Model Coupled to an Ocean [PDF]

, 2022
The viscous-plastic (VP) rheology and the Maxwell elasto-brittle (MEB) rheology were compared in a common framework. To this end, the Massachusetts Institute of Technology general circulation model (MITgcm) was complemented by the MEB rheology for sea ...
Bourgett, Mirjam
core  

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

Advanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo, Mi Jeong Lee, Hyun Wook Kang, Seonhee Byeon, Soo‐Kyoung Choi, Nakwon Choi, Seung‐Woo Cho, Yoonhee Jin   +7 more
wiley   +1 more source

Magnetic anisotropy and debris-dependent rheological heterogeneity within stratified basal ice

Journal of Glaciology, 2019
Basal ice of glaciers and ice sheets frequently contains a well-developed stratification of distinct, semi-continuous, alternating layers of debris-poor and debris-rich ice.
Nathan R. Hopkins, Edward B. Evenson, Dario Bilardello, Richard B. Alley, Claudio Berti, Kenneth P. Kodama   +5 more
doaj   +1 more source

Effect of Lateral and Stress‐Dependent Viscosity Variations on GIA Induced Uplift Rates in the Amundsen Sea Embayment

Geochemistry, Geophysics, Geosystems, 2021
Accurate glacial isostatic adjustment (GIA) models are required for correcting measurements of mass change in Antarctica and for improving knowledge of the sub‐surface, especially in areas of large current ice loss such as the Amundsen Sea Embayment (ASE)
B. Blank, V. Barletta, H. Hu, F. Pappa, W. van der Wal   +4 more
doaj   +1 more source

Coagulative Granular Hydrogels with an Enzyme Catalyzed Fibrin Network for Endogenous Tissue Regeneration

Advanced Healthcare Materials, EarlyView.
Coagulative granular hydrogels are composed of packed thrombin‐functionalized microgels that catalyze the conversion of fibrinogen into a secondary fibrin network, filling the interstitial voids. This bio‐inspired approach stabilizes the biomaterial to match the robustness of bulk hydrogels without compromising injectability, mimicking the initial ...
Zhipeng Deng, Camila B. Tovani, Simona Bianco, Gianni Comandini, Aya Elghajiji, Mina Aleemardani, Roxana Moscalu, Jeremie Zappia, Bianca Fernandes, Olivia Annett, Chrissy L. Hammond, Jason Wong, Dave J. Adams, Fabrizio Scarpa, Michael R. Whitehouse, Annela M. Seddon, James P. K. Armstrong   +16 more
wiley   +1 more source