Results 1 to 10 of about 1,206,650 (354)

Brief communication: Reduction in the future Greenland ice sheet surface melt with the help of solar geoengineering [PDF]

open access: yesThe Cryosphere, 2021
The Greenland Ice Sheet (GrIS) will be losing mass at an accelerating pace throughout the 21st century, with a direct link between anthropogenic greenhouse gas emissions and the magnitude of Greenland mass loss.
X. Fettweis   +13 more
doaj   +1 more source

Spatially heterogeneous effect of climate warming on the Arctic land ice [PDF]

open access: yesThe Cryosphere, 2023
Global warming has already substantially altered the Arctic cryosphere. Due to the Arctic warming amplification, the temperature is increasing more strongly, leading to pervasive changes in this area. Recent years were notably marked by melt records over
D. Maure   +6 more
doaj   +1 more source

AN EXTENSION OF CITYJSON TO SUPPORT POINT CLOUDS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
The combination between dense point clouds and 3D vector objects permits new cartographic representation of urban information. This paper proposes an extension for the CityJSON encoding to support point clouds.
G.-A. Nys   +3 more
doaj   +1 more source

The Podleś Spheres Converge to the Sphere

open access: yesCommunications in Mathematical Physics, 2022
34 ...
Konrad Aguilar, Jens Kaad, David Kyed
openaire   +3 more sources

TESSERAE3D: A BENCHMARK FOR TESSERAE SEMANTIC SEGMENTATION IN 3D POINT CLOUDS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
3D point cloud of mosaic tesserae is used by heritage researchers, restorers and archaeologists for digital investigations. Information extraction, pattern analysis and semantic assignment are necessary to complement the geometric information.
A. Kharroubi   +3 more
doaj   +1 more source

Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional Metamaterials

open access: yesApplied Sciences, 2023
The diffusion of mechanical ventilation systems increased rapidly due to the climate changes in all parts of the world. The mechanical ventilation systems are mainly used in the summer for many difficulties to face very hot temperatures.
Amelia Trematerra   +2 more
doaj   +1 more source

Polystyrene Microplastics of Varying Sizes and Shapes Induce Distinct Redox and Mitochondrial Stress Responses in a Caco-2 Monolayer

open access: yesAntioxidants, 2023
Currently, we lack crucial knowledge on how the physicochemical properties of particles affect cellular health, resulting in an important gap in our understanding of the human toxicity of microplastics (MPs).
Nelly D. Saenen   +6 more
doaj   +1 more source

MINIMAL IMMERSIONS OF SPHERES INTO SPHERES [PDF]

open access: yesProceedings of the National Academy of Sciences, 1969
In this paper we announce a qualitative description of an important class of closed n -dimensional submanifolds of the m -dimensional sphere, namely, those which locally minimize the n -area in the same way that geodesics minimize the arc length and are themselves ...
Manfredo P. do Carmo   +3 more
openaire   +3 more sources

Minimal 2-spheres in 3-spheres [PDF]

open access: yesDuke Mathematical Journal, 2019
We prove that any manifold diffeomorphic to $S^3$ and endowed with a generic metric contains at least two embedded minimal two-spheres. The existence of at least one minimal two-sphere was obtained by Simon-Smith in 1983. Our approach combines ideas from min-max theory and mean curvature flow.
Haslhofer, Robert, Ketover, Daniel
openaire   +5 more sources

Freezing on a sphere [PDF]

open access: yesNature, 2018
The best-understood crystal ordering transition is that of two-dimensional freezing, which proceeds by the rapid eradication of lattice defects as the temperature is lowered below a critical threshold. But crystals that assemble on closed surfaces are required by topology to have a minimum number of lattice defects, called disclinations, that act as ...
Colm P. Kelleher   +3 more
openaire   +4 more sources

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