Results 51 to 60 of about 3,847,981 (341)
Frontiers in Marine Science, 2019 Optical instruments can rapidly determine numbers and characteristics of water column particles with high sensitivity. Here we show the usefulness of optically assessed total particle volume below the main pycnocline to estimate carbon export in two ...
Alexander B. Bochdansky +4 more
doaj +1 more source
Particle flux associated with stochastic processes [PDF]
Astrophysics and Space Science, 1971 The Lagrange expansion, which may be used to derive the Fokker-Planck equation, is here used to derive the corresponding expression for the flux of particles subject to a stochastic scattering process. The coefficients which occur in this expression are, in general, not the same as the coefficients which occur in the Fokker-Planck equation itself.
C. E. Newman +2 more
openaire +1 more source
Limit on stably trapped particle fluxes [PDF]
Journal of Geophysical Research, 1966 Limit on stably trapped particle fluxes determined theoretically and compared with data from Explorer ...
C. F. Kennel, H. E. Petschek
openaire +1 more source
Peptide‐based ligand antagonists block a Vibrio cholerae adhesin
FEBS Letters, EarlyView.The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang +9 more
wiley +1 more source
The Importance of H in Particulate Organic Matter Stoichiometry, Export and Energy Flow
Frontiers in Microbiology, 2017 The discipline of marine ecological stoichiometry has progressed rapidly over the past two decades, and continues to be at the forefront of microbial oceanography. Most of this effort has been focused on the elements carbon (C) and nitrogen (N), and to a
David M. Karl, Eric Grabowski
doaj +1 more source
Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer
FEBS Letters, EarlyView.Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani +4 more
wiley +1 more source
The role of zooplankton in the pelagic-benthic coupling of the Southern Ocean
Scientia Marina, 2005 Zooplankton contributes in different ways to pelagic-benthic coupling: Their faecal material is a major route of energy flow and the vertical migrations of many species as well as the production of pelagic larvae by benthic organisms represent different ...
Sigrid B. Schnack-Schiel, Enrique Isla
doaj +1 more source
Analytical model for flux saturation in sediment transport
, 2014 The transport of sediment by a fluid along the surface is responsible for dune formation, dust entrainment and for a rich diversity of patterns on the bottom of oceans, rivers, and planetary surfaces.
Herrmann, Hans J. +3 more
core +1 more source
Vortex-hole duality: a unified picture of weak and strong-coupling regimes of bosonic ladders with flux [PDF]
, 2017 Two-leg bosonic ladders with flux harbor a remarkable vortex-hole duality between the weak-coupling vortex lattice superfluids and strong-coupling charge-density-wave crystals. The strong-coupling crystalline states, which are realized in the vicinity of
Greschner, S., Vekua, T.
core +3 more sources
Particle Acceleration at 5 au Associated with Turbulence and Small-scale Magnetic Flux Ropes
Astrophysical Journal, 2019 An observational analysis of an atypical energetic particle event near 5 au measured by the Ulysses spacecraft is presented. A previous study has attributed the unusual enhancement of energetic proton flux to the presence of small-scale dynamic magnetic ...
L.-L. Zhao +6 more
semanticscholar +1 more source