Results 81 to 90 of about 2,485,692 (404)

Feasibility Study for an Ice-Based Image Monitoring System for Polar Regions Using Improved Visual Enhancement Algorithms

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Melting and evolution of Arctic Ocean sea ice in summer are one of the main factors affecting sea ice albedo and climate. At present, remote sensing images of sea ice are mainly acquired with the help of payload platforms, such as aircraft or satellites.
Yuchen Wang   +6 more
doaj   +1 more source

Sea ice and oxygen

open access: yes, 2022
Abstract 1) Atmospheric oxygen cycles on a seasonal basis, as does carbon dioxide. 2) Photosynthesis is likely contributing to these cycles, but the dominant spatial regions are unknown and the contribution of marine plankton has been assumed to be small. 3) I test and confirm the prediction that seasonal sea ice and oxygen rates are highly
openaire   +1 more source

Changing state of Arctic sea ice across all seasons

open access: yesEnvironmental Research Letters, 2018
The decline in the floating sea ice cover in the Arctic is one of the most striking manifestations of climate change. In this review, we examine this ongoing loss of Arctic sea ice across all seasons.
J. Stroeve, D. Notz
semanticscholar   +1 more source

miRNA‐29 regulates epidermal and mesenchymal functions in skin repair

open access: yesFEBS Letters, EarlyView.
miRNA‐29 inhibits cell‐to‐cell and cell‐to‐matrix adhesion by silencing mRNA targets. Adhesion is controlled by complex interactions between many types of molecules coded by mRNAs. This is crucial for keeping together the layers of the skin and for regenerating the skin after wounding.
Lalitha Thiagarajan   +10 more
wiley   +1 more source

Optimization of the k-nearest-neighbors model for summer Arctic Sea ice prediction

open access: yesFrontiers in Marine Science, 2023
The Arctic sea ice plays a significant role in climate-related processes and has a considerable effect on humans, however accurately predicting the Arctic sea ice concentration is still challenging.
Yongcheng Lin   +9 more
doaj   +1 more source

Arctic sea ice is an important temporal sink and means of transport for microplastic

open access: yesNature Communications, 2018
Microplastics (MP) are recognized as a growing environmental hazard and have been identified as far as the remote Polar Regions, with particularly high concentrations of microplastics in sea ice. Little is known regarding the horizontal variability of MP
I. Peeken   +8 more
semanticscholar   +1 more source

STAT3 expression is reduced in cardiac pericytes in HFpEF and its loss reduces cellular adhesion and induces pericyte senescence

open access: yesFEBS Letters, EarlyView.
Heart failure with preserved ejection fraction (HFpEF) accounts for half of the heart failure cases. It is characterised by microvascular dysfunction, associated with reduced pericyte coverage and diminished STAT3 expression in pericytes. Loss of STAT3 impairs pericyte adhesion, promotes senescence, and activates a pro‐fibrotic gene program.
Leah Rebecca Vanicek   +15 more
wiley   +1 more source

The reversibility of sea ice loss in a state-of-the-art climate model [PDF]

open access: yes, 2011
Rapid Arctic sea ice retreat has fueled speculation about the possibility of threshold (or ‘tipping point’) behavior and irreversible loss of the sea ice cover. We test sea ice reversibility within a state-of-the-art atmosphere–ocean global climate model
Armour, K. C.   +4 more
core  

In situ visualization of tip undercooling and lamellar microstructure evolution of sea ice with manipulated orientation [PDF]

open access: yesarXiv, 2020
Sea ice growth with lamellar microstructure containing brine channels has been extensively investigated. However, the quantitative growth information of sea ice remains lack due to the uncontrolled crystalline orientation in previous investigations.
arxiv  

Sea ice is a mushy layer [PDF]

open access: yesGeophysical Research Letters, 2006
Sea ice is a two‐phase, two‐component, reactive porous medium: an example of what is known in other contexts as a mushy layer. The fundamental conservation laws underlying the mathematical description of mushy layers provide a robust foundation for the prediction of sea‐ice evolution.
John S. Wettlaufer   +4 more
openaire   +4 more sources

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