Search results for "Asma"
showing 4 items of 4204 documents
Synergistic effect of W incorporation and pulsed current mode on wear and tribocorrosion resistance of coatings grown by plasma electrolytic oxidatio…
2019
Ceramic coatings were grown by plasma electrolytic oxidation on 7075 Al alloy using unipolar and bipolar pulsed current waveforms with 20 and 40% cathodic duty cycles, from a silicate-based bath without and with the addition of Na2WO4. Pancake-like morphology was dominant on the coatings grown by unipolar waveform, while the bipolar waveforms promoted volcano-like morphology, increased the roughness of the coating surface and the formation of more compact layers. The coatings produced using the bipolar waveforms provided higher resistances toward both tribocorrosion and dry sliding conditions, while further improvement was achieved by the presence of tungsten. The coatings produced in tungs…
High Entropy Alloys for Energy Conversion and Storage: A Review of Grain Boundary Wetting Phenomena
2022
This research was funded by the Russian Ministry of Science and Higher Education (contract no. 075-15-2021-945 grant no. 13.2251.21.0013). Support from the University of the Basque Country (project GIU19/019) and from the Basque Government (project IT1714-22) is also acknowledged.
Estudio de los valores de referencia de óxido nítrico alveolar y bronquial en aire exhalado
2015
La inflamación y el remodelado bronquial desempeñan un papel fundamental en la patógena del asma, existiendo evidencia suficiente para considerar que el control de la inflamación contribuye a la evolución de la enfermedad. Es por ello que en los últimos años se ha intensificado la búsqueda de biomarcadores que nos aporten información importante y precisa sobre el proceso inflamatorio en la vía aérea y puedan ser útiles en el manejo de la enfermedad. De entre todos ellos, cabe destacar el ONe dada su sencillez, reproducibilidad y carácter no invasivo, requiriendo menos experiencia que el recuento celular en el esputo y siendo menos costoso que otros métodos analizados. Actualmente se conside…
Dynamics of a harmonic oscillator coupled with a Glauber amplifier
2020
A system of a quantum harmonic oscillator bi-linearly coupled with a Glauber amplifier is analysed considering a time-dependent Hamiltonian model. The Hilbert space of this system may be exactly subdivided into invariant finite dimensional subspaces. Resorting to the Jordan-Schwinger map, the dynamical problem within each invariant subspace may be traced back to an effective SU(2) Hamiltonian model expressed in terms of spin variables only. This circumstance allows to analytically solve the dynamical problem and thus to study the exact dynamics of the oscillator-amplifier system under specific time-dependent scenarios. Peculiar physical effects are brought to light by comparing the dynamics…