Results 61 to 70 of about 37,530 (219)

Measurement of angular distributions by use of low-coherence interferometry for light-scattering spectroscopy [PDF]

open access: yes, 2001
We present a novel interferometer for measuring angular distributions of backscattered light. The new system exploits a low-coherence source in a modified Michelson interferometer to provide depth resolution, as in optical coherence tomography, but ...
Dasari, Ramachandra R.   +3 more
core   +1 more source

Sediment‐stressed reefs over the past 420 Myr

open access: yesThe Depositional Record, Volume 12, Issue 1, February 2026.
In order to fully elucidate the relationship between siliciclastic sedimentation and reef development, there needs to be a significant step change in how we record ancient and recent reefs. Only through the collection of constrained quantitative data, we can progress beyond the largely conjectural associations postulated for many ancient reefal systems.
Tanja Unger   +4 more
wiley   +1 more source

Species Yet to Be Discovered Are More Threatened and Have Smaller Ranges

open access: yesDiversity and Distributions, Volume 32, Issue 2, February 2026.
ABSTRACT Aim To assess whether newly described species are more likely to be threatened and have smaller ranges than known species. Location Global. Methods In this study, we focus on the timing of species acceptance. We compare two global taxonomic assessments of birds, mammals and amphibians conducted approximately 10 years apart. Our approach allows
Harith Farooq   +2 more
wiley   +1 more source

Subunit rotation in single FRET-labeled F1-ATPase hold in solution by an anti-Brownian electrokinetic trap

open access: yes, 2013
FoF1-ATP synthase catalyzes the synthesis of adenosine triphosphate (ATP). The F1 portion can be stripped from the membrane-embedded Fo portion of the enzyme.
Boersch, Michael   +4 more
core   +1 more source

Implications of muon anomalous magnetic moment for supersymmetric dark matter [PDF]

open access: yes, 2001
The anomalous magnetic moment of the muon has recently been measured to be in conflict with the Standard Model prediction with an excess of 2.6 sigma. Taking the excess at face value as a measurement of the supersymmetric contribution, we find that at 95%
Baltz, E. A., Gondolo, P.
core   +2 more sources

PERICLES: A Set of Empirical Rotational Isochrones Modeled on Cool Dwarfs in Open Clusters and Wide Binaries

open access: yesAstronomische Nachrichten, Volume 347, Issue 1, January 2026.
ABSTRACT Isochrones, equal‐age curves, are widely used in astrophysics to estimate stellar ages. Classical stellar parameters are, however, very limited in their usability for main sequence stars because of their weak age‐dependence. Here, rotation period measurements provide complementary information.
David Gruner, Sydney A. Barnes
wiley   +1 more source

The EDELWEISS Experiment : Status and Outlook [PDF]

open access: yes, 2000
The EDELWEISS Dark Matter search uses low-temperature Ge detectors with heat and ionisation read- out to identify nuclear recoils induced by elastic collisions with WIMPs from the galactic halo.
A. Benoit   +36 more
core   +6 more sources

A Growth‐Coupled Evolutionary Strategy Enhances Heme Biosynthesis in Saccharomyces cerevisiae

open access: yesBiotechnology Journal, Volume 21, Issue 1, January 2026.
Graphical Abstract and Lay Summary Introducing a plasmid with a heme‐responsive promoter connected to a growth‐promoting gene into Saccharomyces cerevisiae created a positive feedback loop between intracellular heme levels and cell growth. After 100 h of adaptive evolution, the plasmid was removed, resulting in a mutant strain that exhibited an ...
Seoyoon Bang   +3 more
wiley   +1 more source

Status of IGEX dark matter search at Canfranc Underground Laboratory

open access: yes, 2002
One IGEX 76Ge double-beta decay detector is currently operating in the Canfranc Underground Laboratory in a search for dark matter WIMPs, through the Ge nuclear recoil produced by the WIMP elastic scattering.
Aalseth, C. E.   +23 more
core   +1 more source

Soft Mode in cubic PbTiO3 by Hyper-Raman Scattering [PDF]

open access: yes, 2012
Hyper-Raman scattering experiments allowed collecting the spectra of the lowest F1u-symmetry mode of PbTiO3 crystal in the paraelectric phase up to 930K as well as down to about 1K above the phase transition.
Gregora, I.   +3 more
core   +3 more sources

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