Results 51 to 60 of about 319,939 (295)

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Thermodynamic stability of Fe/O solid solution at inner-core conditions

open access: yes, 2000
We present a new technique which allows the fully ab initio calculation of the chemical potential of a substitutional impurity in a high-temperature crystal, including harmonic and anharmonic lattice vibrations.
Price, GD   +5 more
core   +1 more source

Water-jet Propulsion Characteristics of Vehicle Planing

open access: yes水下无人系统学报, 2023
This study employed the shear stress transport(SST) k-ω turbulence model, multiple reference frame(MRF) model, and ideal pump model to construct a numerical simulation model of water-jet propulsion for vehicle planing.
Fuqiang LIU   +3 more
doaj   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

Pressure transmission to the inner ear. A review of the literature.

open access: yesPractica Oto-Rhino-Laryngologica, 1990
The literature on the mechanism of pressure transmission to the inner ear and its effect on the inner ear tissues were reviewed. The pressure of the cerebro-spinal fluid is transmitted to the inner ear via both the cochlear aqueduct and the endolymphatic duct, especially the former. External ear pressure is transmitted more via the round window through
Shinsei Nishihara   +2 more
openaire   +3 more sources

The Natural Selection of Private and Inner Speech

open access: yesFrontiers in Psychology, 2020
This article analyzes the emergence of private and inner speech from the perspective of natural selection, arguing that social speech acts as a selection pressure for the emergence of private speech, that private speech acts as a selection pressure that ...
Sean O’Connor
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Pressure Drop in Capsule Transporting Bends Carrying Spherical Capsules [PDF]

open access: yes, 2012
One of the most important parameters in designing a capsule transporting pipeline is the pressure drop in the pipes carrying capsules and associated pipe fittings such as bends etc.
Ubbi, Kuldip   +3 more
core   +1 more source

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar   +4 more
wiley   +1 more source

Robust spatially resolved pressure measurements using MRI with novel buoyant advection-free preparations of stable microbubbles in polysaccharide gels

open access: yes, 2008
MRI of fluids containing lipid coated microbubbles has been shown to be an effective tool for measuring the local fluid pressure. However, the intrinsically buoyant nature of these microbubbles precludes lengthy measurements due to their vertical ...
Galvosas, Petrik   +15 more
core   +1 more source

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