Browsing B6 – LU institūti un aģentūras / Institutes and agencies of the UL by Title
Now showing items 618-637 of 1024
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Octahedral Tilting in Homologous Perovskite Series CaMoO3-SrMoO3-BaMoO3 Probed by Temperature-Dependent EXAFS Spectroscopy
(MDPI, 2022)Local distortions in perovskites can be induced by cation displacements and/or by the tilting and rotating of cation–anion octahedra. Both phenomena have been subject to intense investigations over many years. However, ... -
ODS ferritic steels obtained from gas atomized powders through the STARS processing route: Reactive synthesis as an alternative to mechanical alloying
(Elsevier Ltd, 2018)Oxide Dispersion Strengthened Ferritic Stainless Steels (ODS FS) are candidate materials for structural components in fusion reactors. Their ultrafine microstructure and the presence of a very stable dispersion of Y-Ti-O ... -
On building 4-critical plane and projective plane multiwheels from odd wheels
(2013-01-31)We build unbounded classes of plane and projective plane multiwheels that are 4-critical that are received summing odd wheels as edge sums modulo two. These classes can be considered as ascending from a single common graph ... -
On computation in the limit by non-deterministic Turing machines
(Latvia State University, 1974) -
On computation in the limit by non-deterministic Turing machines
(Scientific Proceedings of Latvia State University, 1974) -
ON CYCLE INVARIANT
(2013-04-23)Taking the programming paradigm with the cycle invariant as a base notion there for a ground cycle paradigm, in a more general setting here these things are considered. Epistemological aspects with reference to Rene Descartes ... -
On Dirac magnetic monopole and Hopf fibration
(2012-12-18) -
On educational problems of mathematics for the faculty of economics and management
(2013-12-17)Problems concerning education of mathematics for the students of the Faculty of economics and managements are considered. -
On flora semantics in house names found in Vidzeme: materials contained in the 1826 counting of souls in Vidzeme province
(Institute of Slavic Studies of the Polish Academy of Sciences, 2014) -
On Grinbergs' differential geometry and finite fields
(2019-03-27)Emanuels Grinbergs, in his youth, during ten years, from 1933 until 1943, wrote three dissertations on one subject, namely, differential geometry [1, 2, 3]. We think that his work in this direction has been neglected for ... -
On Grinberg’s Criterion
(Universiteit Gent, Faculty of Science, 2019)We generalize Grinberg’s hamiltonicity criterion for planar graphs. To this end, we first prove a technical theorem for embedded graphs. As a special case of a corollary of this theorem we obtain Zaks’ extension of Grinberg’s ... -
On low-temperature luminescence quenching in Gd3(Ga,Al)5O12:Ce crystals
(Elsevier B.V., 2019)Temperature dependences of the photoluminescence and X-ray excited luminescence intensity and thermally stimulated luminescence glow curves are measured in the 4.2–300 K temperature range for the undoped and Ce3+ - doped ... -
On osculation, superosculation and characteristic points
(1943-04)Translated into English by D. Zeps Original text: Par oskulāciju, superoskulāciju un charakteristiskiem punktiem, https://dspace.lu.lv/dspace/handle/7/46435 Facsimile of the manuscript of dissertation: https://dspace ... -
On speeding up synthesis and prediction of functions
(Latvia State University, 1974) -
On the Heuristic Procedure to Determine Processing Parameters in Additive Manufacturing based on Materials Extrusion
(MDPI AG, 2020)We present a heuristic procedure for determining key processing parameters (PPs) in materials-extrusion-based additive manufacturing processes. The concept relies on a design-of-experiment approach and consists of eleven ... -
On the reducibility of function classes
(Latvia State University, 1972)N – the set of all natural numbers, F – the set of all total functions N→N, A, B<=F. We say that A is m-reducible to B (A<=m B), iff there is a recursive operator M such that f in A, iff M(f) in B for all f in F. Similarly, ... -
On the Symmetry, Electronic Properties, and Possible Metallic States in NASICON-Structured A4V2(PO4)3 (A = Li, Na, K) Phosphates
(2023)In this work, the electronic structure and properties of NASICON-structured A4V2(PO4)3, where A = Li, Na, K were studied using hybrid density functional theory calculations. The symmetries were analyzed using a group ... -
On the Way to Optoionics
(Wiley Blackwell, 2020)Based on the recent finding of significant ion conduction enhancement in iodide perovskites upon illumination, the potential of an emerging field ‘opto-ionics’ – that we define in parallelism to ‘opto-electronics’ – is ...