Results 81 to 90 of about 5,134,596 (300)
A study on the role of sea ice in the nitrous oxide cycle in the Prydz Bay, Antarctica
Frontiers in Marine ScienceN2O is one of the most important greenhouse gases and ozone depletor, which was a matter of more and more concerned. The Southern Ocean was considered as one of the most important N2O source and was believed to account for ~1/4 of oceanic budget. However,
Man Wu +5 more
doaj +1 more source
Numerical study of sea ice dynamics and wave-ice interactions in the marginal ice zone
, 2021 The Marginal Ice Zone (MIZ) is a highly dynamic region between the open ocean and the inner ice pack. The ice over this region is subjected to waves, introducing new forces but also changing the ice from a cohesive material to a mobile collection of ...
Auclair, Jean-Pierre
core
Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network
FEBS Letters, EarlyView.Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley +1 more source
FEBS 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
Gypsum and hydrohalite dynamics in sea ice brines [PDF]
Geochimica et Cosmochimica Acta, 2017 Abstract Mineral authigenesis from their dissolved sea salt matrix is an emergent feature of sea ice brines, fuelled by dramatic equilibrium solubility changes in the large sub-zero temperature range of this cryospheric system on the surface of high latitude oceans.
Benjamin M. Butler +3 more
openaire +1 more source
Voronoi Dynamics Simulation of Development of Lamellar Microstructure in Sea Ice [PDF]
, 2008 Developments of sea ice polycrystals from the sea surface are simulated in two-dimensional approximation by combining numerical methods for crystal growth, salinity diffusion and flux of heat. An anisotropic growth of ice crystals from a number of nuclei
カワノ, ヨシキ +3 more
core +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
A large-scale high-resolution numerical model for sea-ice fragmentation dynamics [PDF]
The CryosphereForecasts of sea-ice motion and fragmentation are of vital importance for all human interactions with sea ice, ranging from those involving indigenous hunters to shipping in polar regions.
J. Åström +5 more
doaj +1 more source
Journal of Climate, 2015 Abstract The study analyzes the sensitivity and memory of the Southern Hemisphere coupled climate system to increased Antarctic sea ice (ASI), taking into account the persistence of the sea ice maxima in the current climate. The mechanisms involved in restoring the climate balance under two sets of experiments, which differ in regard to ...
Claudia K. Parise +3 more
openaire +1 more source
Antarctic sea ice control on ocean circulation in present and glacial climates [PDF]
, 2013 All authors acknowledge support from the National Science Foundation. R.F. acknowledges support from the Breene M. Kerr Chair.In the modern climate, the ocean below 2 km is mainly filled by waters sinking into the abyss around Antarctica and in the North
Burke, Andrea +7 more
core +1 more source