The Z-ring plays a central role in bacterial division. It consists of FtsZ filaments, but the way these reorganize in the ring-like structure during septation remains largely unknown. Here, we measure the effective constriction dynamics of the ring. Using an oscillating optical trap, we can switch individual rod-shaped E. coli cells between horizontal and vertical orientations. In the vertical ...

Abstract In this paper numerical simulations of the Earth’s magnetic field in south-eastern part an Najaf-Karbala Plateau and to north centre An-Najaf governorate have been investigated using WMM2015 model. The study area is located at (Latitude = 32.3180°-31.99°) N, (Longitude 44.5160°-44.0690°) E, ranging altitude between 20-90 m above sea level). was divided into grid (2000 points) by drawin...

A structural and spectroscopic analysis of the anti-tuberculosis drug pyrazinamide (PZA) was carried out. The PZA molecule was predicted theoretically to possess two conformers differing by internal rotation around the C-C( horizontal lineO) bond, with the E conformer (C(s) symmetry point group; N-C-C horizontal lineO dihedral: 180 degrees ) being ca. 30 kJ mol(-1) more stable than the Z form (...

Y. B. Wang, X. Z. Liao, Y. H. Zhao, J. C. Cooley, Z. Horita, and Y. T. Zhu School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China Division of Materials Science and Technology, Los Alamos National Laboratory, Los Alamos, New ...

We show that a graph manifold which is a Z-homology 3-sphere not homeomorphic to either S or Σ(2, 3, 5) admits a horizontal foliation. This combines with known results to show that the conditions of not being an L-space, of having a left-orderable fundamental group, and of admitting a co-oriented taut foliation, are equivalent for graph manifold Z-homology 3-spheres.

We present a class of graphs where simple random walk is recurrent, yet two independent walkers meet only finitely many times almost surely. In particular, the comb lattice, obtained from Z 2 by removing all horizontal edges off the x-axis, has this property. We also conjecture that the same property holds for some other graphs, including the incipient infinite cluster for critical percolation ...

We present a class of graphs where simple random walk is recurrent, yet two independent walkers meet only finitely many times almost surely. In particular, the comb lattice, obtained from Z 2 by removing all horizontal edges off the x-axis, has this property. We also conjecture that the same property holds for some other graphs, including the incipient infinite cluster for critical percolation ...

Steering Bronchoscope-deployed Needles through Porcine Lung Tissue A. Kuntz, P. J. Swaney, A. Mahoney, R. H. Feins, Y. Z. Lee, R. J. Webster III, R. Alterovitz Department of Computer Science, University of North Carolina at Chapel Hill, USA Department of Mechanical Engineering, Vanderbilt University, USA Division of Cardiothoracic Surgery, University of North Carolina School of Medicine, USA De...