Results 51 to 60 of about 1,722,078 (332)

Changes in Microbial Energy Metabolism Measured by Nanocalorimetry during Growth Phase Transitions

open access: yesFrontiers in Microbiology, 2018
Calorimetric measurements of the change in heat due to microbial metabolic activity convey information about the kinetics, as well as the thermodynamics, of all chemical reactions taking place in a cell.
Alberto Robador   +11 more
doaj   +1 more source

Hot new early dark energy: Towards a unified dark sector of neutrinos, dark energy and dark matter

open access: yesPhysics Letters B, 2022
Hot new early dark energy describes a supercooled, first-order phase transition that takes place at sub-eV temperatures in the dark sector. It lowers the sound horizon, which provides a possible solution to the Hubble tension, and, at the same time, it ...
Florian Niedermann, Martin S. Sloth
doaj  

The Dark Energy Survey [PDF]

open access: yes, 2005
We describe the Dark Energy Survey (DES), a proposed optical-near infrared survey of 5000 sq. deg of the South Galactic Cap to ~24th magnitude in SDSS griz, that would use a new 3 sq.
The Dark Energy Survey Collaboration
core   +1 more source

Quantum Informational Dark Energy: Dark energy from forgetting

open access: yes, 2007
We suggest that dark energy has a quantum informational origin. Landauer's principle associated with the erasure of quantum information at a cosmic horizon implies the non-zero vacuum energy having effective negative pressure.
Eva K. Lee   +4 more
core   +1 more source

Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley   +1 more source

Social context prevents heat hormetic effects against mutagens during fish development

open access: yesFEBS Letters, EarlyView.
This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere   +5 more
wiley   +1 more source

Calibrating Dark Energy

open access: yes, 2008
Exploring the diversity of dark energy dynamics, we discover a calibration relation, a uniform stretching of the amplitude of the equation of state time variation with scale factor. This defines homogeneous families of dark energy physics.
de Putter, Roland, Linder, Eric V.
core   +1 more source

Interacting agegraphic dark energy models in non-flat universe [PDF]

open access: yes, 2009
A so-called "agegraphic dark energy" was recently proposed to explain the dark energy-dominated universe. In this Letter, we generalize the agegraphic dark energy models to the universe with spatial curvature in the presence of interaction between dark ...
't Hooft   +94 more
core   +1 more source

Dark energy and dark matter haloes [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2005
16 p., 11 fig.; replaced with revised version, accepted for publication in MNRAS; corrected error (w=-1.5 halo mass function now agrees with Jenkins et al.
Andrew R. Zentner   +4 more
openaire   +3 more sources

Disruption of SETD3‐mediated histidine‐73 methylation by the BWCFF‐associated β‐actin G74S mutation

open access: yesFEBS Letters, EarlyView.
The β‐actin G74S mutation causes altered interaction of actin with SETD3, reducing histidine‐73 methylation efficiency and forming two distinct actin variants. The variable ratio of these variants across cell types and developmental stages contributes to tissue‐specific phenotypical changes. This imbalance may impair actin dynamics and mechanosensitive
Anja Marquardt   +8 more
wiley   +1 more source

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