Results 21 to 30 of about 230,507 (313)

Ordered intermetallic compounds combining precious metals and transition metals for electrocatalysis

open access: yesFrontiers in Chemistry, 2022
Ordered intermetallic alloys with significantly improved activity and stability have attracted extensive attention as advanced electrocatalysts for reactions in polymer electrolyte membrane fuel cells (PEMFCs).
Meicheng Yang, Jinxin Wan, Chao Yan
doaj   +1 more source

Definable valuations on ordered fields

open access: yes, 2022
We study the definability of convex valuations on ordered fields, with a particular focus on the distinguished subclass of henselian valuations. In the setting of ordered fields, one can consider definability both in the language of rings $\mathcal{L}_ ...
Krapp, Lothar Sebastian   +4 more
core   +1 more source

Crystal orientation-ordered ZnS nanobelt quasi-arrays and their enhanced field-emission

open access: yes, 2007
Crystal orientation-ordered ZnS nanobelt quasi-arrays were fabricated using a non-catalytic and template-free thermal evaporation process; field-emission measurements show that these novel arrays are decent field emitters possessing a current density ...
Ye, C., Bando, Y., Fang, X., Golberg, D.
core   +1 more source

Constructing Banaschewski compactification without Dedekind completeness axiom

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
The main aim of this paper is to provide a construction of the Banaschewski compactification of a zero-dimensional Hausdorff topological space as a structure space of a ring of ordered field-valued continuous functions on the space, and thereby exhibit ...
S. K. Acharyya   +2 more
doaj   +1 more source

Orders in quadratic fields, I

open access: yesProceedings of the Japan Academy, Series A, Mathematical Sciences, 1993
In Part I [ibid. 69, 45-48 (1993; Zbl 0795.11056)], the author gave a criterion for an arbitrary order to have class group generated by ambiguous ideals and also made a conjecture related to that criterion. Afterwards, however, counterexamples to the conjecture were found [cf. Part III, ibid. 70, 176-181 (1994; Zbl 0809.11064)].
openaire   +5 more sources

The Valuation Difference Rank of a Quasi-Ordered Difference Field

open access: yes, 2017
There are several equivalent characterizations of the valuation rank of an ordered field (endowed with its natural valuation). In this paper, we extend the theory to the case of an ordered difference field and introduce the notion of {\it difference rank}
Mickaël Matusinski   +5 more
core   +1 more source

Weakly ∗-ordered ∗-fields

open access: yesJournal of Pure and Applied Algebra, 1995
Let \(D\) be a division ring with involution *, center \(F\) and \([D : F] < \infty \). Since furthermore \(D\) is required to have a weak *-ordering, only the following two cases occur: (1) \((D,*)\) is a standard quaternion-algebra or (2) \([D : F]\) is odd.
openaire   +2 more sources

Detecting scaling in phase transitions on the truncated Heisenberg algebra

open access: yesJournal of High Energy Physics, 2021
We construct and analyze a phase diagram of a self-interacting matrix field coupled to curvature of the non-commutative truncated Heisenberg space. The model reduces to the renormalizable Grosse-Wulkenhaar model in an infinite matrix size limit and ...
Dragan Prekrat   +2 more
doaj   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

On high order derivations of fields [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
Let D ( L /
Mordeson, J. N., Vinograde, B.
openaire   +1 more source

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