Results 101 to 110 of about 668,340 (247)

The Synthesis of Green Palladium Catalysts Stabilized by Chitosan for Hydrogenation

open access: yesMolecules
The proposed paper describes a simple and environmentally friendly method for the synthesis of three-component polymer–inorganic composites, which includes the modification of zinc oxide or montmorillonite (MMT) with chitosan (CS), followed by the ...
Farida Bukharbayeva   +8 more
doaj   +1 more source

External magnetic fields and the chiral phase transition in QED at nonzero chemical potential [PDF]

open access: yesarXiv, 2013
Inspired by recent discussions of inverse magnetic catalysis in the literature, we examine the effects of a uniform external magnetic field on the chiral phase transition in quenched ladder QED at nonzero chemical potential. In particular, we study the behaviour of the effective potential as the strength of the magnetic field is varied while the ...
arxiv  

From Catalysis of Evolution to Evolution of Catalysis

open access: yesAccounts of Chemical Research
ConspectusThe mystery of the origins of life is one of the most difficult yet intriguing challenges to which humanity has grappled. How did biopolymers emerge in the absence of enzymes (evolved biocatalysts), and how did long-lasting chemical evolution find a path to the highly selective complex biology that we observe today?
Rotem Edri   +2 more
openaire   +2 more sources

Inverse Magnetic Catalysis in hot quark matter within (P)NJL models [PDF]

open access: yesarXiv, 2015
Apart from Magnetic Catalysis at low temperatures, recent LQCD studies have shown the opposite effect at temperatures near the transition region: instead of enhancing, the magnetic field suppresses the quark condensates (Inverse Magnetic Catalysis). In this paper, two approaches are discussed within NJL-type models with Polyakov Loop that reproduce ...
arxiv  

Magnetic Catalysis in the Higher-Order Quark Sigma Model [PDF]

open access: yesJournal of Particle Physics, Vol. 1, No. 1, 58 (2017), 2016
The effect of the higher-order mesonic interactions is investigated on the chiral symmetry breaking in the presence of an external magnetic field. The effective of higher-order mesonic potential is employed and is numerically solved in the mean-field approximation. The chiral symmetry breaking increases with increasing magnetic field.
arxiv  

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