@article{9287,
abstract = {The phytohormone auxin and its directional transport through tissues are intensively
studied. However, a mechanistic understanding of auxin-mediated feedback on endocytosis
and polar distribution of PIN auxin transporters remains limited due to contradictory
observations and interpretations. Here, we used state-of-the-art methods to reexamine the
auxin effects on PIN endocytic trafficking. We used high auxin concentrations or longer
treatments versus lower concentrations and shorter treatments of natural (IAA) and
synthetic (NAA) auxins to distinguish between specific and nonspecific effects. Longer
treatments of both auxins interfere with Brefeldin A-mediated intracellular PIN2
accumulation and also with general aggregation of endomembrane compartments. NAA
treatment decreased the internalization of the endocytic tracer dye, FM4-64; however, NAA
treatment also affected the number, distribution, and compartment identity of the early
endosome/trans-Golgi network (EE/TGN), rendering the FM4-64 endocytic assays at high
NAA concentrations unreliable. To circumvent these nonspecific effects of NAA and IAA
affecting the endomembrane system, we opted for alternative approaches visualizing the
endocytic events directly at the plasma membrane (PM). Using Total Internal Reflection
Fluorescence (TIRF) microscopy, we saw no significant effects of IAA or NAA treatments on
the incidence and dynamics of clathrin foci, implying that these treatments do not affect the
overall endocytosis rate. However, both NAA and IAA at low concentrations rapidly and
specifically promoted endocytosis of photo-converted PIN2 from the PM. These analyses
identify a specific effect of NAA and IAA on PIN2 endocytosis, thus contributing to its
polarity maintenance and furthermore illustrate that high auxin levels have nonspecific
effects on trafficking and endomembrane compartments. },
author = {Narasimhan, Madhumitha and Gallei, Michelle C and Tan, Shutang and Johnson, Alexander J and Verstraeten, Inge and Li, Lanxin and Rodriguez Solovey, Lesia and Han, Huibin and Himschoot, E and Wang, R and Vanneste, S and Sánchez-Simarro, J and Aniento, F and Adamowski, Maciek and Friml, Jiří},
issn = {0032-0889},
journal = {Plant Physiology},
publisher = {Oxford University Press},
title = {{Systematic analysis of specific and nonspecific auxin effects on endocytosis and trafficking}},
doi = {10.1093/plphys/kiab134},
year = {2021},
}
@misc{9291,
abstract = {This .zip File contains the transport data for figures presented in the main text and supplementary material of "Enhancement of Proximity Induced Superconductivity in Planar Germanium" by K. Aggarwal, et. al.
The measurements were done using Labber Software and the data is stored in the hdf5 file format. The files can be opened using either the Labber Log Browser (https://labber.org/overview/) or Labber Python API (http://labber.org/online-doc/api/LogFile.html).},
author = {Katsaros, Georgios},
publisher = {IST Austria},
title = {{Raw transport data for: Enhancement of proximity induced superconductivity in planar germanium}},
doi = {10.15479/AT:ISTA:9291},
year = {2021},
}
@article{9297,
abstract = {We report the results of an experimental investigation into the decay of turbulence in plane Couette–Poiseuille flow using ‘quench’ experiments where the flow laminarises after a sudden reduction in Reynolds number Re. Specifically, we study the velocity field in the streamwise–spanwise plane. We show that the spanwise velocity containing rolls decays faster than the streamwise velocity, which displays elongated regions of higher or lower velocity called streaks. At final Reynolds numbers above 425, the decay of streaks displays two stages: first a slow decay when rolls are present and secondly a more rapid decay of streaks alone. The difference in behaviour results from the regeneration of streaks by rolls, called the lift-up effect. We define the turbulent fraction as the portion of the flow containing turbulence and this is estimated by thresholding the spanwise velocity component. It decreases linearly with time in the whole range of final Re. The corresponding decay slope increases linearly with final Re. The extrapolated value at which this decay slope vanishes is Reaz≈656±10, close to Reg≈670 at which turbulence is self-sustained. The decay of the energy computed from the spanwise velocity component is found to be exponential. The corresponding decay rate increases linearly with Re, with an extrapolated vanishing value at ReAz≈688±10. This value is also close to the value at which the turbulence is self-sustained, showing that valuable information on the transition can be obtained over a wide range of Re.},
author = {Liu, T. and Semin, B. and Klotz, Lukasz and Godoy-Diana, R. and Wesfreid, J. E. and Mullin, T.},
issn = {1469-7645},
journal = {Journal of Fluid Mechanics},
publisher = {Cambridge University Press},
title = {{Decay of streaks and rolls in plane Couette-Poiseuille flow}},
doi = {10.1017/jfm.2021.89},
volume = {915},
year = {2021},
}
@article{9295,
abstract = {Hill's Conjecture states that the crossing number cr(𝐾𝑛) of the complete graph 𝐾𝑛 in the plane (equivalently, the sphere) is 14⌊𝑛2⌋⌊𝑛−12⌋⌊𝑛−22⌋⌊𝑛−32⌋=𝑛4/64+𝑂(𝑛3) . Moon proved that the expected number of crossings in a spherical drawing in which the points are randomly distributed and joined by geodesics is precisely 𝑛4/64+𝑂(𝑛3) , thus matching asymptotically the conjectured value of cr(𝐾𝑛) . Let cr𝑃(𝐺) denote the crossing number of a graph 𝐺 in the projective plane. Recently, Elkies proved that the expected number of crossings in a naturally defined random projective plane drawing of 𝐾𝑛 is (𝑛4/8𝜋2)+𝑂(𝑛3) . In analogy with the relation of Moon's result to Hill's conjecture, Elkies asked if lim𝑛→∞ cr𝑃(𝐾𝑛)/𝑛4=1/8𝜋2 . We construct drawings of 𝐾𝑛 in the projective plane that disprove this.},
author = {Arroyo Guevara, Alan M and Mcquillan, Dan and Richter, R. Bruce and Salazar, Gelasio and Sullivan, Matthew},
issn = {1097-0118},
journal = {Journal of Graph Theory},
publisher = {Wiley},
title = {{Drawings of complete graphs in the projective plane}},
doi = {10.1002/jgt.22665},
year = {2021},
}
@article{9307,
abstract = {We establish finite time extinction with probability one for weak solutions of the Cauchy–Dirichlet problem for the 1D stochastic porous medium equation with Stratonovich transport noise and compactly supported smooth initial datum. Heuristically, this is expected to hold because Brownian motion has average spread rate O(t12) whereas the support of solutions to the deterministic PME grows only with rate O(t1m+1). The rigorous proof relies on a contraction principle up to time-dependent shift for Wong–Zakai type approximations, the transformation to a deterministic PME with two copies of a Brownian path as the lateral boundary, and techniques from the theory of viscosity solutions.},
author = {Hensel, Sebastian},
issn = {2194041X},
journal = {Stochastics and Partial Differential Equations: Analysis and Computations},
publisher = {Springer Nature},
title = {{Finite time extinction for the 1D stochastic porous medium equation with transport noise}},
doi = {10.1007/s40072-021-00188-9},
year = {2021},
}