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Locally nilpotent groups of units in tiled rings
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2010)
We consider locally nilpotent subgroups of units in basic tiled rings A, over local rings O which satisfy a weak commutativity condition. Tiled rings are generalizations of both tiled orders and incidence rings. If, in ...
Properties of galaxies with ring structures
(EDP Sciences, 2021-09)
Aims: We present a statistical analysis of different characteristics of ringed spiral galaxies with the aim of assessing the effects of rings on disk galaxy properties. Methods: We built a catalog of ringed galaxies from ...
Moonlets wandering on a leash-ring
(Blackwell Publishing, 2014)
The lord of the rings – the fellowship of the ring: a comparative analysis of the book and the screenplay
(Universidade do Vale do Rio dos Sinos, 2021-07-05)
This final thesis seeks to undertake a literary comparative analysis of the book The
Lord of the Rings – The Fellowship of the Ring (2004) by J. R. R. Tolkien and the screenplay
of the movie The Lord of the Rings – The ...
The lord of the rings – the fellowship of the ring: a comparative analysis of the book and the screenplay
(Universidade do Vale do Rio dos Sinos, 2021-07-05)
This final thesis seeks to undertake a literary comparative analysis of the book The
Lord of the Rings – The Fellowship of the Ring (2004) by J. R. R. Tolkien and the screenplay
of the movie The Lord of the Rings – The ...
Quillen-Suslin Rings
In this paper we introduce the Quillen-Suslin rings and investigate its relation with some other classes of rings as Hermite rings (each stably free module is free), PSF rings (each finitely generated projective module is ...
Influence of Support Material on the Activity and Selectivity of Pt–Ir Catalysts for Ring Opening Reactions
(Springer, 2014-12)
The influence of the supports (Al2O3, TiO2 and SiO2) on the activity and selectivity of Pt-Ir catalysts for the ring opening of decalin was studied. It was found that the properties of the supports strongly influence the ...
Influence of the Brønsted acidity, SiO2/Al2O3 ratio and Rh-Pd content on the ring opening. Part II. Selective ring opening of methylcyclohexane
(Elsevier, 2014-01)
Monometallic and bimetallic Pd-Rh catalysts with various Rh/Pd atomic ratios (=0.5, 1 and 2) and a total metal charge of 1 wt% supported on SiO2-Al2O3(SIRAL 40, 20, 5) were studied for the ring opening of methylcyclohexane ...
Influence of Support Acidity and Ir Content on the Selective Ring Opening of Decalin over Ir/SiO 2 –Al 2 O 3
(American Chemical Society, 2017-04)
The influence of the addition of HCl and Ir (1 wt %) to different SiO2−Al2O3 supports of varying silica content was studied in the reaction of selective ring opening of decalin. The addition of HCl to silica−alumina supports ...