Results 101 to 110 of about 2,245 (216)
HeritageThis study presents the first technical examination of Ring Around the Rosie (ca. 1908), an easel painting by the Greek artist Symeon Savvidis (1859–1927).
Silvia Bottura-Scardina +7 more
doaj +1 more source
Journal of Graph Theory, 2012 AbstractThe star chromatic index of a graph G is the minimum number of colors needed to properly color the edges of the graph so that no path or cycle of length four is bi‐colored. We obtain a near‐linear upper bound in terms of the maximum degree . Our best lower bound on in terms of Δ is valid for complete graphs. We also consider the special case
Zdenek Dvorák 0001 +2 more
openaire +3 more sources
Structures magnétiques des chromates de cobalt et de nickel
, 1969 The magnetic structures of cobalt and nickel chromâtes, isostructural with CrVO₄ (space group Cmcm) were determined by neutron diffraction. The magnetic ions (Co²⁺ or Ni²⁺) are numbered 1 to 4 in the order 0 0 0, 0 0 1/2, 1/2 1/2 1/2, and 1/2 1/2 0.
Coing-Boyat, Jean +3 more
core +1 more source
Zeolite-Based Anti-corrosion Pigments for Polymer Coatings: A Brief Review
Advances in Polymer TechnologyThe article provides a brief overview of the use of zeolites as environmentally safe anticorrosion pigments for organic coatings on metals. The number of studies on zeolite-based inhibiting pigments has increased significantly in recent years, due to the
Sergiy Korniy +2 more
doaj +1 more source
Maximum chromatic polynomial of 3-chromatic blocks
Discrete Mathematics, 1997 This article continues the work done by the author in [Maximum chromatic polynomials of 2-connected graphs, J. Graph Theory 18, No. 4, 329-336 (1994; Zbl 0809.05046)]. In that paper it was shown that the 2-connected graph of order \(n\) with the greatest number \(P(G,3)\) of proper 3-colourings is \(C_n\) (and, for \(n=5\), \(K_{2,3}\)), and that \(K_ ...
openaire +2 more sources
, 2017 Chrome yellow refers to a group of synthetic inorganic pigments that became popular as an artist’s material from the second quarter of the 19th century. The color of the pigment, in which the chromate ion acts as a chromophore, is related to its chemical
Willemien Anaf (3817492) +6 more
core +2 more sources
Replacement of Chromates and Design of a Nanotechnology Coating for Hydrogen Embrittlement Mitigation [PDF]
, 2011 This talk will be cover two areas of corrosion mitigation. In the first portion, an alternative to chromates will be discussed, while in the second portion, some thoughts on a new process to mitigate hydrogen embrittlement will be presented.
Brown, Richard
core +1 more source
Surface science perspectives on eco-friendly corrosion inhibitors
Next MaterialsThe science of metallic degradation and its control have developed significantly over the past decades. Beginning with traditional corrosion inhibitors such as chromates, nitrates and phosphates which are well-known for their effectiveness and ...
Abhinay Thakur +4 more
doaj +1 more source
Transactions of the American Mathematical Society, 1946 Birkhoff, George D., Lewis, D. C.
openaire +2 more sources
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2011 To stabilize the surface of the galvanized steel it is important to apply a passivation treatment during its manufacturing. The general aim of the passivation treatment is to prevent the formation “storage stain” or “white rust”.
Anișoara CIOCAN, Tamara RADU
doaj