Results 21 to 30 of about 86,839 (265)

Optical Properties and Filtering Applications of Coaxial Gold Nanotube Ordered Array

open access: yesGuangtongxin yanjiu, 2021
In order to realize the multi-band tunable filtering of the metamaterial filter in the visible and near infrared bands, the ordered array of coaxial gold nanotubes is numerically simulated by using the Finite-Difference Time-Domain method. We investigate
Jian-xin CHENG   +3 more
doaj   +1 more source

Preparation and Application of Two-Dimensional Noble Metal Nanoparticle Ordered Arrays

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2021
Besides the surface plasmon resonance characteristic of noble metal nanoparticles, the two-dimensional(2 D)noble metal nanoparticle ordered arrays can generate new or enhanced optical properties with good stability and reproducibility due to their highly
MEN Dandan; XING Changchang; LI Wenjuan; ZHANG Honghua; LI Yue
doaj   +1 more source

*-valuations and ordered *-fields [PDF]

open access: yesTransactions of the American Mathematical Society, 1980
We generalize elementary valuation theory to *-fields (division rings with involution), apply the generalized theory to the task of ordering *-fields, and give some applications to Hermitian forms.
openaire   +2 more sources

Completeness of Ordered Fields and a Trio of Classical Series Tests

open access: yesAbstract and Applied Analysis, 2016
This article explores the fate of the infinite series tests of Dirichlet, Dedekind, and Abel in the context of an arbitrary ordered field. It is shown that each of these three tests characterizes the Dedekind completeness of an Archimedean ordered field;
Robert Kantrowitz, Michael M. Neumann
doaj   +1 more source

Algebraic Solution of Tropical Polynomial Optimization Problems

open access: yesMathematics, 2021
We consider constrained optimization problems defined in the tropical algebra setting on a linearly ordered, algebraically complete (radicable) idempotent semifield (a semiring with idempotent addition and invertible multiplication).
Nikolai Krivulin
doaj   +1 more source

A Novel Approach toward Fuzzy Generalized Bi-Ideals in Ordered Semigroups

open access: yesThe Scientific World Journal, 2014
In several advanced fields like control engineering, computer science, fuzzy automata, finite state machine, and error correcting codes, the use of fuzzified algebraic structures especially ordered semigroups plays a central role.
Faiz Muhammad Khan   +2 more
doaj   +1 more source

Methodological integration in the study of religions

open access: yesScripta Instituti Donneriani Aboensis, 1999
"Religions" constitute a field of study and accordingly "the study of religion (or religions)" is a discipline. What is a discipline, that is, in the scientific sense?
Michael Pye
doaj   +1 more source

Prediction of fully compensated ferrimagnetic spin-gapless semiconducting FeMnGa/Al/In half Heusler alloys

open access: yesIUCrJ, 2019
Materials with full spin polarization that exhibit zero net magnetization attract great scientific interest because of their potential applications in spintronics. Here, the structural, magnetic and electronic properties of a C1b-ordered FeMnGa alloy are
Y. J. Zhang   +3 more
doaj   +1 more source

Physical properties and cellular responses of gelatin methacryloyl bulk hydrogels and highly ordered porous hydrogels

open access: yesFrontiers in Soft Matter, 2023
Protein-based hydrogels hold a high content of water in their three-dimensional (3D) network structure and exhibit innate biological activities as well as soft tissue-like mechanical properties, resulting in being highly applicable to various tissue ...
Haiyan Yin   +7 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

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