Browsing Facultad de Matemática, Astronomía, Física y Computación by Language "eng"
Now showing items 41-60 of 219
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Depth distribution of martensite in plasma nitrided AISI H13 steel and its correlation to hardness
(2015)The depth distributions of hardness, nitrogen, and crystallographic phases in the diffusion zone of plasma nitrided AISI H13 steel were determined by microindentation, electron microprobe, grazing incidence X-ray diffraction, ... -
Development of a design model for functionality and content access from rich internet application requirements
(2015)We have found several methodologies for the development of rich internet applications (RIA); however, they did not give enough attention to the problem of defining both appropriate notations and adequate process for ... -
Directed search for gravitational waves from Scorpius X-1 with initial LIGO data
(2015)We present results of a search for continuously emitted gravitational radiation, directed at the brightest low-mass x-ray binary, Scorpius X-1. Our semicoherent analysis covers 10 days of LIGO S5 data ranging from 50–550 ... -
Dissolution properties, solid-state transformation and polymorphic crystallization: progesterone case study
(2014)Progesterone is a natural steroid hormone and a poor soluble drug which presents two polymorphs (forms 1 and 2). Different methods to obtain form 2 were tested and a complete solid-state characterization of both polymorphs ... -
Distinguishability notion based on Wootters statistical distance : application to discrete maps
(2017)We study the distinguishability notion given by Wootters for states represented by probability density functions. This presents the particularity that it can also be used for defining a statistical distance in chaotic ... -
Diurnal patterns in lightning activity over South America
(2014)Satellite and ground network observations of lightning flash distribution data are used to examine the diurnal cycle of lightning activity over the tropical and subtropical regions of South America. The results show in ... -
Dose point kernel calculation and modelling with nuclear medicine dosimetry purposes
(2014)Monoclonal labeled antibodies are commonly used for radioimmunotherapy purposes in nuclear medicine. The procedure is based on the deposition of specific radiactivity concentrations on tumoral regions with the aim of ... -
Dosimetry optimization system and integrated software (DOSIS) : a comparison against Fluka code results over a standard phantom
(2014)Actually, dual-imaging facilities allow obtainance of both mass and activity patient-specific distributions perfectly correlated, which are important to improve dose distributions estimations and radioimmunotherapy treatment ... -
Dynamic characterization of crystalline and glass phases of deuterated 1,1,2,2 tetrachloroethane
(2015)A thorough characterization of the γ, β, and glass phases of deuterated 1,1,2,2 tetrachloroethane (C2D2Cl4) via nuclear quadrupole resonance and Molecular Dynamic Simulations (MDSs) is reported. The presence of molecular ... -
Dynamic heterogeneity in the monoclinic phase of CCl4
(2016)Carbon tetrachloride (CCl4) is one of the simplest compounds having a translationally stable monoclinic phase while exhibiting a rich rotational dynamics below 226 K. Recent nuclear quadrupolar resonance (NQR) experiments ... -
Effect of the microtubule-associated protein tau on dynamics of single-headed motor proteins KIF1A
(2014-02)Intracellular transport based on molecular motors and its regulation are crucial to the functioning of cells. Filamentary tracks of the cells are abundantly decorated with nonmotile microtubule-associated proteins, such ... -
Effects of magnetic field gradients on the aggregation dynamics of colloidal magnetic nanoparticles
(2015)We have used low-field 1H nuclear-magnetic resonance (NMR) spectroscopy and molecular dynamics (MD) to investigate the aggregation dynamics of magnetic particles in ionic ferrofluids (IFFs) in the presence of magnetic field ... -
Effects of rainfall on Culex mosquito population dynamics
(2017)The dynamics of a mosquito population depends heavily on climatic variables such as temperature and precipitation. Since climate change models predict that global warming will impact on the frequency and intensity of ... -
Enhancement of dissolution rate of furosemide using a solid dispersion with D-glucosamine HCl
(2016)Furosemide is a potent high ceiling (loop) diuretic mainly used in the treatment of edematous states associated with cardiac, renal, and hepatic failure, and the treatment of hypertension. Furosemide has been classified ... -
Evaporation kinetics in swollen porous polymeric networks
(2014)Polymer matrices with well defined structure and pore sizes are widely used in several areas of chemistry such as catalysis, enzyme immobilization, HPLC, adsorbents or controlled drug release. These polymers have pores in ... -
Examples of extensions of hopf algebras
(2015)We give some examples of, and raise some questions on, extensions of semisimple Hopf algebras. -
Examples of pointed color Hopf algebras
(2014)We present examples of color Hopf algebras, i.e. Hopf algebras in color categories (braided tensor categories with braiding induced by a bicharacter on an abelian group), related with quantum doubles of pointed Hopf algebras. ... -
Existence of nonnegative solutions for singular elliptic problems
(2016)We prove the existence of nonnegative nontrivial weak solutions to the problem −∆u = au−αχ{u>0} − bup in Ω, u = 0 on ∂Ω, where Ω is a bounded domain in Rn. A sufficient condition for the existence of a continuous and ... -
Existence of strictly positive solutions for sublinear elliptic problems in bounded domains
(2014)Let Ω be a smooth bounded domain in RN and let m be a possibly discontinuous and unbounded function that changes sign in Ω. Let f : [0,∞) → [0,∞) be a nondecreasing continuous function such that k1 ξp ≤ f (ξ) ≤ k2 ξp for ... -
Experimental determination of <10 10>/ Ψ tilt grain boundary energies in ice
(2014)Ice grain boundary energies γgb relative to the free surface energy γs were determined by studying the topographic details revealed by plastic replicas of the ice grain boundary groove-free surface with a Laser Confocal ...
