Results 91 to 100 of about 967,535 (307)

Equatorial transport as diagnosed from nitrous oxide variability [PDF]

Atmospheric Chemistry and Physics, 2009
The mechanisms of transport on annual, semi-annual and quasi-biennial time scales in the equatorial (10° S–10° N) stratosphere are investigated using the nitrous oxide (N₂O) measurements of the space-borne ODIN Sub ...
M. P. Chipperfield, V.-H. Peuch, W. Feng, L. El Amraoui, H. Teyssèdre, E. Le Flochmoën, J.-L. Attié, J.-P. Pommereau, P. Ricaud   +8 more
doaj  

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Bering Strait Ocean Heat Transport Drives Decadal Arctic Variability in a High‐Resolution Climate Model

Geophysical Research Letters
We investigate the role of ocean heat transport (OHT) in driving the decadal variability of the Arctic climate by analyzing the pre‐industrial control simulation of a high‐resolution climate model.
Yuchen Li, Wilbert Weijer, Prajvala Kurtakoti, Milena Veneziani, Ping Chang   +4 more
doaj   +1 more source

Control objects with variable transport delay

Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal, 2021
Research aim is to analyze a class of automatic control systems at mining and concentrating facilities, where controlling action is the consumption of fuel or substance by a transporting body in order to develop recommendations on stability and control quality improvement. Research methodology consists in working out a model of automatic control system
openaire   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Determining North Atlantic meridional transport variability from pressure on the western boundary: a model investigation. [PDF]

, 2008
In this paper we investigate the possibility of determining North Atlantic meridional transport variability using pressure on the western boundary, focusing on the 42degN latitude of the Halifax WAVE array.
Bingham, Bingham, Bryden, C. W. Hughes, Coward, Cubasch, Cunningham, Gille, Greatbatch, Hakkinen, Hirschi, Hughes, Johnson, Kanzow, Kawase, Marsh, Mathers, Maul, Park, Ponte, Ponte, R. J. Bingham, Rhines, Sime, Stepanov, Stevens, Unal, Vellinga, Vinogradova, Wood   +29 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Dune Volume Changes at Decadal Timescales and Its Relation with Potential Aeolian Transport

Journal of Marine Science and Engineering, 2019
Long-term changes in dune volume at the Belgian coast are analyzed based on measured data by airborne surveys available from 1979. For most of the 65 km long coastal stretch, dune volume increases linearly in time at a constant rate.
Glenn Strypsteen, Rik Houthuys, Pieter Rauwoens   +2 more
doaj   +1 more source

Electron-Hole Asymmetry in GdBaCo_{2}O_{5+x}: Evidence for Spin Blockade of Electron Transport in a Correlated Electron System

, 2005
In RBaCo_{2}O_{5+x} compounds (R is rare earth) variability of the oxygen content allows precise doping of CoO_2 planes with both types of charge carriers.
A. A. Taskin, A. A. Taskin, J. E. Huheey, N. F. Mott, Yoichi Ando   +4 more
core   +1 more source