Results 91 to 100 of about 19,864,775 (289)

Various Approaches to Compute Fluid Residence Time in Mixing Systems

open access: yes, 2010
Residence time including mean residence time and residence time distribution (RTD) is a very important parameter to characterize a mixing system. In practice, tracer study has been widely used in experiments to obtain residence time distribution.
Genong Li   +3 more
core   +1 more source

Residence time distributions in a liquefier of material extrusion process

open access: yes, 2023
International audienceIn this short communication, the residence time distribution of molten polymer in a liquefier of a material extrusion process is numerically investigated.
Pigeonneau, Franck
core   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Modeling the Mean Residence Time of Liquid Phase in the Gas–Liquid Cyclone

open access: yes, 2015
Residence time is a key parameter for the cyclones with mass transfer or reaction process. A model for the cylinder-on-cone cyclone was presented to calculate the mean residence time of the liquid phase, based on a force balance on the wall film.
Xupeng Zhang (1493305)   +4 more
core   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Mean residence time of soil organic matter associated with kaolinite and smectite [PDF]

open access: yes, 2003
To gain insight into the effect of clay mineralogy on the turnover of organic matter, we analysed the C-14 activity of soil organic matter associated with clay in soils dominated by kaolinite and smectite in natural savanna systems in seven countries ...
Wattel, E.   +4 more
core   +2 more sources

Human apolipoprotein A-I and A-II metabolism

open access: yesJournal of Lipid Research, 1982
The kinetics of the major apolipoproteins (apo) of plasma high density lipoproteins (HDL), apoA-I and apoA-II, were examined in a total of 44 individual tracer studies in 22 normal male and female subjects.
E J Schaefer   +7 more
doaj   +1 more source

Mean and maximum residence times, and mean square deviation of selected protein-bound waters.

open access: yes, 2012
Only water molecules that are protein-bound in simulations F and are shown. The mean residence time, tmean(α) was calculated using eq.2. tmax is the maximum mean residence time at a particular hydration site.
Alemayehu A. Gorfe (182787)   +2 more
core   +1 more source

Neutralization of the PTX3/CD44 axis suppresses TGF‐β1 signaling in kidney fibrosis

open access: yesFEBS Letters, EarlyView.
This study investigates how the PTX3/CD44 axis promotes kidney fibrosis by activating TGF‐β1 signaling. We demonstrate that the neutralizing antibody WHC‐001 effectively inhibits this pathway, suppressing myofibroblast activation and partial epithelial–mesenchymal transition (EMT).
Chao‐Chun Cheng   +8 more
wiley   +1 more source

DNA ligase LigE increases bacterial transformation with damaged extracellular DNA

open access: yesFEBS Letters, EarlyView.
The DNA ligase LigE from the naturally competent Gram‐negative bacterium Neisseria gonorrhoaea increases transformation with cut extracellular DNA. This process is ATP‐dependent and relies on the catalytic activity of LigE; it also requires that LigE contains an intact periplasmic localisation sequence, indicating that ligE functions in the periplasm ...
Jolyn Pan   +4 more
wiley   +1 more source

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