Browsing Artículos by Title
Now showing items 431-450 of 10187
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A versatile synthetic approach to design tailor-made push-pull chromophores with intriguing and tunable photophysical signatures
(Elsevier, 2017-08-12)Novel modified Biellmann BODIPYs were prepared using a C-H arylation reaction with in-situ formed aryldiazonium salts. The post-functionalization of the methylthio group of these derivatives was demonstrated in SNAr and ... -
A volatility spillover analysis with realized semi(co)variances in Australian electricity markets
(Elsevier, 2022-07)[EN] Volatility spillovers are a characteristic of interconnected electricity markets. We use high-frequency prices to analyze the transmission of volatility across five Australian regional electricity markets. We propose ... -
A Wavy Two-Dimensional Covalent Organic Framework from Core- Twisted Polycyclic Aromatic Hydrocarbons
(ACS, 2019-09-11)A high degree of crystallinity is an essential aspect in two-dimensional covalent organic frameworks, as many properties depend strongly on the structural arrangement of the different layers and their constituents. We ... -
A Weak Tripled Contraction for Solving a Fuzzy Global Optimization Problem in Fuzzy Metric Spaces
(MDPI, 2021-03-29)In the setting of fuzzy metric spaces (FMSs), a global optimization problem (GOP) obtaining the distance between two subsets of an FMS is solved by a tripled fixed-point (FP) technique here. Also, fuzzy weak tripled ... -
A wheat cysteine-rich receptor-like kinase confersbroad-spectrum resistance against Septoria tritici blotch
(Nature, 2021-01-19)The poverty of disease resistance gene reservoirs limits the breeding of crops for durable resistance against evolutionary dynamic pathogens. Zymoseptoria tritici which causes Septoria tritici blotch (STB), represents one ... -
A. Kardaberaz eta J. A. Mogel: literatur bizkaieraren lehen uneak testuen argitan
(Euskalerriaren Adiskideen Elkartea, 2004)... -
Ab initio calculation of low-energy collective charge-density excitations in MgB2
(American Physical Society, 2009-08)We present ab initio time-dependent density-functional theory calculation results for low-energy collective electron excitations in MgB2. The existence of a long-lived collective excitation corresponding to coherent charge ... -
Ab Initio Molecular Dynamics of Hydrogen on Tungsten Surfaces
(Royal Society Of Chemistry, 2021-04-07)The dissociation process of hydrogen molecules on W(110) was studied using density functional theory and classical molecular dynamics. We have calculated the dissociation probability for molecules with energies below 300 ... -
Ab initio molecular dynamics on the electronic Boltzmann equilibrium distribution
(IOP Publishing, 2010-08-31)We prove that for a combined system of classical and quantum particles, it is possible to describe a dynamics for the classical particles that incorporates in a natural way the Boltzmann equilibrium population for the ... -
Ab initio study of metastable occupation of tetrahedral sites in palladium hydrides and its impact on superconductivity
(APS, 2023-01-11)A recent experimental work on palladium hydrides suggested that metastable structures with hydrogen atoms occupying tetrahedral sites could lead to superconductivity above 50 K, a huge increase compared to the 9 K critical ... -
Ab initio study of subsurface diffusion of Cu on the H-passivated Si(001) surface
(American Physical Society, 2009-10-12)In this paper we use density-functional theory calculations to analyze both the stability and diffusion of Cu adatoms near and on the H-passivated Si 001 surface. Two different Cu sources are considered: depositing Cu ... -
Ab initio study of the structural, vibrational, and optical properties of potential parent structures of nitrogen-doped lutetium hydride
(APS, 2023-08-28)The recent report of near-ambient conditions superconductivity in a nitrogen-doped lutetium hydride has inspired a large number of experimental studies with contradictory results. We model from first principles the physical ... -
Ab Initio Theory of Photoemission from Graphene
(MDPI, 2021-05-03)Angle-resolved photoemission from monolayer and bilayer graphene is studied based on an ab initio one-step theory. The outgoing photoelectron is represented by the time-reversed low energy electron diffraction (LEED) state ... -
ABC model for estimating sea lamprey local population size using a simple nest count during the spawning season
(EDP Sciences, 2023-02)Population estimation implies considering the biology of the species, but also the constraints of logistic aspects such as cost. While common methods based on individual counts can provide precise estimates, they require ... -
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Aberrant Synaptic PTEN in Symptomatic Alzheimer's Patients May Link Synaptic Depression to Network Failure
(Frontiers Media, 2021-05-11)In Alzheimer's disease (AD), Amyloid beta (A beta) impairs synaptic function by inhibiting long-term potentiation (LTP), and by facilitating long-term depression (LTD). There is now evidence from AD models that A beta ... -
Abertzaletasunaren bilakaera espainiar immigrazioarekiko: erreakziotik integraziora
(Udako Euskal Unibertsitatea, 2014)Artikulu honetan, euskal nazionalismoak Espainiatik Hego Euskal Herrira iritsitako migrazio-fluxuen aurrean garatutako diskurtso teorikoa berrikusten da, nazionalismo horren sorreratik ezkerreko abertzaletasun berria finkatu ... -
About Extracting Dynamic Information of Unknown Complex Systems by Neural Networks
(Marek Reformat, 2018-07-08)This work presents a straightforward methodology based on Neural Networks (NN) which allows to obtain relevant dynamic information of unknown nonlinear systems. It provides an approach for cases in which the complex task ... -
About K-Positivity Properties of Time-Invariant Linear Systems Subject to Point Delays
(Hindawi Publishing Corporation, 2007)This paper discusses nonnegativity and positivity concepts and related properties for the state and output trajectory solutions of dynamic linear time-invariant systems described by functional differential equations subject ... -
About Robust Stability of Caputo Linear Fractional Dynamic Systems with Time Delays through Fixed Point Theory
(Hindawi Publishing Corporation, 2011)This paper investigates the global stability and the global asymptotic stability independent of the sizes of the delays of linear time-varying Caputo fractional dynamic systems of real fractional order possessing internal ...