Results 81 to 90 of about 6,734,388 (302)

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

DCO-Modelling-of-Deep-Time-Atmospheric-Carbon-Flux-from-Subduction-Zone-Interactions: Plate Models & Minor Edits

open access: yes, 2016
<p>EarthByte DCO-commissioned project, Spatio-temporal modelling of deep time atmospheric carbon flux from subduction zone interactions, specifically addresses this goal by using plate reconstructions and cutting-edge, open-source community ...
Sabin Zahirovic   +7 more
core   +1 more source

Unified Direct-Flux Vector Control for AC motor drives [PDF]

open access: yes, 2010
The paper introduces a Unified Direct-Flux Vector Control scheme suitable for sinusoidal AC motor drives. The AC drives considered here are Induction Motor, Synchronous Reluctance and synchronous Permanent Magnet motor drives, including Interior and ...
R. Bojoi   +7 more
core   +1 more source

Computational modelling of the HyperVapotron cooling technique for nuclear fusion applications [PDF]

open access: yes, 2010
Efficient heat transfer technologies are essential for magnetically confined fusion reactors; this applies to both the current generation of experimental reactors as well as future power plants.
Milnes, Joseph
core   +3 more sources

Modeled diurnally varying sea surface temperatures and their influence on surface heat fluxes [PDF]

open access: yesJournal of Geophysical Research: Oceans, 2014
AbstractA diurnal warming model is used to create a new data set of global, diurnally varying sea surface temperatures (dSSTs) and surface turbulent heat fluxes over a 5 year period. The magnitude of diurnal warming is primarily a function of low wind speed and net heat flux.
Rachel R. Weihs, Mark. A. Bourassa
openaire   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

On the saltation of fresh snow in a wind tunnel: profile characterization and single particle statistics [PDF]

open access: yes, 2008
We present experimental results on the snow drift in a turbulent boundary layer over a flat fresh snow-covered surface. Vertical profiles of mass flux and of the distribution of particle diameters were obtained by means of a pair of Snow Particle ...
Manes, C.   +11 more
core   +1 more source

Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties

open access: yesNuclear Materials and Energy, 2017
In the full-tungsten divertor qualification program at ITER Organization, macro-cracks, so called self-castellation were found in a fraction of tungsten monoblocks during cyclic high heat flux loading at 20MW/m2.
S. Panayotis   +10 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Modelling of Thermal Transient Phenomena in Axial Flux Permanent Magnet Machine Based on Coupling of Two Separeted Models - Electrical and Thermal Models

open access: yesCommunications, 2007
The paper deals with transient thermal modelling of air cooled axial flux permanent magnet machine. It has a rotor with permanent magnets placed on the rotor surface situated between two stators. The simulation model consists of two equivalent circuits -
Eva Belicova
doaj   +1 more source

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