Results 41 to 50 of about 1,819,517 (323)

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Characterization and Relaxation Properties of a Series of Monodispersed Magnetic Nanoparticles

open access: yesSensors, 2019
Magnetic iron oxide nanoparticles are relatively advanced nanomaterials, and are widely used in biology, physics and medicine, especially as contrast agents for magnetic resonance imaging.
Yapeng Zhang   +2 more
doaj   +1 more source

Relaxing in Foam [PDF]

open access: yesPhysical Review Letters, 2003
We investigate the mechanical response of an aqueous foam, and its relation to the microscopic rearrangement dynamics of the bubble-packing structure. At rest, even though the foam is coarsening, the rheology is demonstrated to be linear. Under flow, shear-induced rearrangements compete with coarsening-induced rearrangements.
Gopal, A. D., Durian, Douglas J
openaire   +4 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

INFLUENCE OF SENSOR DEPRIVATION BY FLOAT THERAPY METHODS ON HUMAN EMOTIONAL HEALTH INDICATORS, STRESS RESISTANCE AND ARTERIAL PRESSURE LEVEL (LITERATURE REVIEW)

open access: yesИзвестия высших учебных заведений. Поволжский регион: Медицинские науки, 2020
Floating or floating therapy, or float therapy (the English-language literature uses the term Flotation-REST from eng. float – free to swim, hold on to the surface, REST – Restricted Environmental Stimulation Therapy) – a method of physical exposure ...
I. Ya. Moiseeva   +4 more
doaj   +1 more source

A tree search approach for the solution of set problems using alternative relaxations [PDF]

open access: yes, 1988
A number of alternative relaxations for the family of set problems (FSP) in general and set covering problems (SCP) in particular are introduced and discussed.
El-Darzi, E, Mitra, G
core  

Temperature dependence of electron-spin relaxation in a single InAs quantum dot at zero applied magnetic field

open access: yes, 2012
The temperature-dependent electron spin relaxation of positively charged excitons in a single InAs quantum dot (QD) was measured by time-resolved photoluminescence spectroscopy at zero applied magnetic fields.
Abragam A.   +6 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Effects of folding numbers, scoring depth and bending velocity on bending-moment relaxation of creased paperboard

open access: yesMechanical Engineering Journal, 2014
This work deals with the time-dependent creasing characteristics of coated paperboard. The correlation between the bending strength (resistance) and time-dependent problems on the actual processing phenomenon has not been sufficiently discussed in the ...
Shigeru NAGASAWA   +2 more
doaj   +1 more source

Short-time $\beta$-relaxation in glass-forming liquids is cooperative in nature

open access: yes, 2015
Temporal relaxation of density fluctuations in supercooled liquids near the glass transition occurs in multiple steps. The short-time $\beta$-relaxation is generally attributed to spatially local processes involving the rattling motion of a particle in ...
Dasgupta, Chandan   +2 more
core   +1 more source

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