Results 51 to 60 of about 61,982,689 (238)

Novel pole-sitter mission concepts for continuous polar remote sensing [PDF]

open access: yes, 2012
The pole-sitter concept is a solution to the poor temporal resolution of polar observations from highly inclined, low Earth orbits and the poor high latitude coverage from geostationary orbit.
Heiligers, Jeannette   +2 more
core   +4 more sources

An outsider’s perspective on information recovery in de Sitter space

open access: yesJournal of High Energy Physics, 2023
Entanglement islands play a crucial role in our understanding of how Hawking radiation encodes information in a black hole, but their relevance in cosmological spacetimes is less clear. In this paper, we continue our investigation of information recovery
Lars Aalsma   +2 more
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Quantizing the de Sitter space–times

open access: yes, 2004
In this Letter, the cosmological horizons are quantized by the reduced phase space approach [Phys. Lett. B 517 (2001) 415], in the cases of Schwarzschild–de Sitter and pure de Sitter space–times. The same discrete spectrum is obtained, either the mass or
You-Gen Shen   +3 more
core   +1 more source

Compact space-like hypersurfaces in de Sitter space [PDF]

open access: yes, 2005
We present some integral formulas for compact space-like hypersurfaces in de Sitter space and some equivalent characterizations for totally umbilical compact space-like hypersur-faces in de Sitter space in terms of mean curvature and higher-order mean ...
Jinchi Lv, Jinchi Lv
core   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

On the Structure os Asymptotically de Sitter and Anti-de Sitter Spaces [PDF]

open access: yesAdvances in Theoretical and Mathematical Physics, 2004
22pp, minor changes, references ...
openaire   +3 more sources

Geometric phase for timelike spherical normal magnetic charged particles optical ferromagnetic model

open access: yesJournal of Taibah University for Science, 2020
We introduce the theory of optical spherical Heisenberg ferromagnetic spin of timelike spherical normal magnetic flows of particles by the spherical frame in de Sitter space.
Talat Korpinar   +3 more
doaj   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

open access: yesFEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj   +3 more
wiley   +1 more source

Towards causal patch physics in dS/CFT

open access: yesEPJ Web of Conferences, 2018
This contribution is a status report on a research program aimed at obtaining quantum-gravitational physics inside a cosmological horizon through dS/CFT, i.e. through a holographic description at past/future infinity of de Sitter space.
Neiman Yasha
doaj   +1 more source

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