Results 71 to 80 of about 1,048,468 (267)
The Existence of Planar Hypotraceable Oriented Graphs [PDF]
Discrete Mathematics & Theoretical Computer Science, 2017 A digraph is \emph{traceable} if it has a path that visits every vertex. A digraph $D$ is \emph{hypotraceable} if $D$ is not traceable but $D-v$ is traceable for every vertex $v\in V(D)$.
Susan van Aardt +2 more
doaj +1 more source
Untangling a Planar Graph [PDF]
Discrete & Computational Geometry, 2009 A straight-line drawing $ $ of a planar graph $G$ need not be plane, but can be made so by \emph{untangling} it, that is, by moving some of the vertices of $G$. Let shift$(G, )$ denote the minimum number of vertices that need to be moved to untangle $ $. We show that shift$(G, )$ is NP-hard to compute and to approximate. Our hardness results extend
Xavier Goaoc +5 more
openaire +3 more sources
The Continuum Between Hexagonal Planar and Trigonal Planar Geometries
Angewandte Chemie, 2022 New heterometallic hydride complexes that involve the addition of {Mg–H} and {Zn–H} bonds to group 10 transition metals (Pd, Pt) are reported. The side-on coordination of a single {Mg–H} to Pd forms a well-defined σ-complex. In contrast, addition of three {Mg–H} or {Zn–H} bonds to Pd or Pt results in the formation of planar complexes with subtly ...
Martí Garçon +7 more
openaire +4 more sources
Systematic profiling of cancer‐fibroblast interactions reveals drug combinations in ovarian cancer
Molecular Oncology, EarlyView.Fibroblasts, cells in the tumor environment, support ovarian cancer cell growth and alter morphology and drug response. We used fibroblast and cancer cell co‐culture models to test 528 drugs and discovered new drugs for combination treatment. We showed that adding Vorinostat or Birinapant to standard chemotherapy may improve drug response, suggesting ...
Greta Gudoityte +10 more
wiley +1 more source
COMPARATIVE STUDY OF THE THERMO-CONVECTIVE BEHAVIOR OF A TURBULENT FLOW IN A RECTANGULAR DUCT IN THE PRESENCE OF THREE PLANAR BAFFLES AND/OR CORRUGATED (WAVED) [PDF]
Journal of Engineering Science and Technology, 2018 This study numerically examines the behaviour of a two-dimensional turbulent flow of air in a rectangular pipe with three flat or corrugated baffles. A realizable k-ε turbulence model is used and the conservation equations are solved by the finite volume
HAMIDOU BENZENINE +3 more
doaj
Planar Shielded-Loop Resonators
, 2014 The design and analysis of planar shielded-loop resonators for use in wireless non-radiative power transfer systems is presented. The difficulties associated with coaxial shielded-loop resonators for wireless power transfer are discussed and planar ...
Grbic, Anthony, Tierney, Brian B.
core +1 more source
Journal of Computer and System Sciences, 2005 AbstractA set S of vertices in a digraph D=(V,A) is a kernel if S is independent and every vertex in V-S has an out-neighbor in S. We show that there exist O(n219.1k+n4)-time and O(k36+219.1kk9+n2)-time algorithms for checking whether a planar digraph D of order n has a kernel with at most k vertices.
Gutin, Gregory +3 more
openaire +7 more sources
Non-planar extensions of subdivisions of planar graphs [PDF]
Journal of Combinatorial Theory, Series B, 2016 This version fixes an error in the published paper. The error was kindly pointed out to us by Katherine Naismith. Changes from the published version are indicated in red.
Robin Thomas, Sergey Norin
openaire +3 more sources
FEBS Open Bio, EarlyView.The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley +1 more source
Механика машин, механизмов и материалов, 2020 The article is devoted to the experimental evaluation of the effect of EDM modifying the original smooth surface of the wire tool on its technological parameters when cutting different sheet materials, in particular, on cutting ability, surface quality ...
Mikhail G. Kiselev +4 more
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