Results 61 to 70 of about 4,680,147 (302)

Quantum error correction may delay, but also cause, entanglement sudden death

open access: yes, 2008
Dissipation may cause two initially entangled qubits to evolve into a separable state in a finite time. This behavior is called entanglement sudden death (ESD). We study to what extent quantum error correction can combat ESD.
Gunnar Björk   +4 more
core   +1 more source

Black-Body Radiation Correction to the Polarizability of Helium [PDF]

open access: yes, 2011
The correction to the polarizability of helium due to black-body radiation is calculated near room temperature. A precise theoretical determination of the black-body radiation correction to the polarizability of helium is essential for dielectric gas ...
D. A. Varshalovich   +4 more
core   +3 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

The clinical case of sildenafil administration in a very premature infant with pulmonary hypertension

open access: yesJournal of Pediatric and Neonatal Individualized Medicine, 2015
We report the use of oral sildenafil in a 7-month-old preterm newborn with severe bronchopulmonary dysplasia and pulmonary arterial hypertension refractory to captopril and inhaled budesonide, and need of consistent oxygenation.
Galina A. Alyamovskaya   +3 more
doaj   +1 more source

Quasiballistic correction to the density of states in three-dimensional metal

open access: yes, 1999
We study the exchange correction to the density of states in the three-dimensional metal near the Fermi energy. In the ballistic limit, when the distance to the Fermi level exceeds the inverse transport relaxation time $1/\tau$, we find the correction ...
A. A. Koulakov   +8 more
core   +1 more source

Design of a realistic PET-CT-MRI phantom [PDF]

open access: yes, 2011
The validation of the PET image quality of new PET-MRI systems should be done against the image quality of currently available PET-CT systems. This includes the validation of new attenuation correction methods.
Espana Palomares, Samuel   +4 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Social distances decrease of body height and the maturation rate of Polish girls in urban and rural population in the period 1967–2009

open access: yesAnthropological Review, 2016
The aim of the study is to present social distances in biological development of youth in the period of changes in economic and political situation in Poland.
Łaska-Mierzejewska Teresa   +4 more
doaj   +1 more source

Evidence of leaky protection following COVID-19 vaccination and SARS-CoV-2 infection in an incarcerated population

open access: yesNature Communications, 2023
Whether SARS-CoV-2 infection and COVID-19 vaccines confer exposure-dependent (“leaky”) protection against infection remains unknown. We examined the effect of prior infection, vaccination, and hybrid immunity on infection risk among residents of ...
Margaret L. Lind   +14 more
doaj   +1 more source

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