Results 81 to 90 of about 5,950,394 (339)

Diffusion-Limited Coalescence with Finite Reaction Rates in One Dimension

open access: yes, 1994
We study the diffusion-limited process $A+A\to A$ in one dimension, with finite reaction rates. We develop an approximation scheme based on the method of Inter-Particle Distribution Functions (IPDF), which was formerly used for the exact solution of the ...
  +13 more
core   +2 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

Comparison of mental performance and sleepiness between 8 and 12 hrs shift works in an oil refinery plant in Iran [PDF]

open access: yesطب کار, 2015
Background: There are different types of shift work programs, each of them has its pros and cons. The purpose of this study was to compare sleep and mental performance in 12-hour and 8-hour shift works.
M Maghsoodipour   +2 more
doaj  

Sonochemistry approach for a new process of biodiesel production from Jatropha Curcas Oil [PDF]

open access: yes, 2011
This thesis presents the sonochemistry approach to reduce required reaction time to convert the Jatropha Curcas oil into biodiesel using an the ultrasound clamp on tubular reactor. The effect of diameter clamp on tubular reactor to remove free fatty acid
Praptijanto, Achmad
core  

Fractional Reaction-Diffusion Equation

open access: yes, 2003
A fractional reaction-diffusion equation is derived from a continuous time random walk model when the transport is dispersive. The exit from the encounter distance, which is described by the algebraic waiting time distribution of jump motion, interferes ...
Seki, Kazuhiko   +2 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +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

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

The effect of juggling on the proprioceptive and attentional abilities among older women

open access: yesFrontiers in Public Health
BackgroundAge-related changes in attentional abilities can lead to a decline in body segment awareness in space. However, studies have reported that physical activity can improve proprioception among older adults, although proven activities with this ...
Jakub Malik   +3 more
doaj   +1 more source

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