Exploració per autor "Arias Montenegro, Francisco Javier"
Ara es mostren els items 1-20 de 87
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A dust cleaning system for solar arrays on Mars using pressurized CO2
(2018-11-15)
Article
Accés restringit per política de l'editorialObtaining CO2 from the Martian atmosphere through a freezing process has been proposed during de last decade as a means of obtaining high-pressure gas without having to use mechanical and sorption pumps -which, besides ... -
A first assessment of an aerodynamic barrier layer for filtering airborne hygroscopic particles
(2021-09-01)
Article
Accés obertIn this work consideration is given to an aerodynamic concept for filtration of small water droplets such as those caused by an infected person when coughs or sneezes and including airborne hygroscopic particle, and with ... -
A first estimate for a pressure-retarded osmosis-driven thermosyphon
(2017-12-01)
Article
Accés obertPressure retarded osmosis (PRO) process and its significance for thermosyphon technology is discussed. In previous work the possibility to drive a thermosyphon by difference of densities from induced salinity gradients ... -
A first estimate for thermal osmotic long storage
(2019-09-15)
Article
Accés obertIn this brief note, a first assessment on the possibilities for thermal osmotic storage using the thermal precipitation of aqueous solutions as alternative to sensible heat storage is performed. In a recent study it was ... -
A linear mass spectrometer by induced Hall potential for electromagnetic isotopic separation working at high pressures
(2016-08-14)
Article
Accés obertIn this paper a novel alternative for bulk electromagnetic separation working at high pressures is proposed. It is shown that if a self-induced Hall potential is stimulated in the boundaries, the system will be able to ... -
A method for selective hornet Vespa Velutina baited traps using a compressed air cannon
(2019-05-28)
Report de recerca
Accés obertThe efficiency and selectiveness of baited traps to control the invasive hornet Vespa velutina has been often questioned. Recent studies show that capture of Vespa velutina accounted for less than 1% of all captures, ... -
A method of attaining high pressurized vessels in space, the Moon and with particular reference to Mars
(2018)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work consideration is given for a technological method of attaining high pressurized vessels by a solidification-sublimation thermal cycle of CO2 without the need of compressors or mechanical devices prone to ... -
A negative reactivity feedback driven by induced buoyancy after a temperature transient in lead-cooled fast reactors
(2017-10-24)
Article
Accés obertConsideration is given to the possibility to use changes in buoyancy as a negative reactivity feedback mechanism during temperature transients in heavy liquid metal fast reactors (HLMFRs). It is shown that by the proper ... -
A neutron diode for subcritical multistage multipliers with special reference in tritium breeding
(2016-04)
Article
Accés obertIn this paper the interaction between a magnetic field and the neutron spin magnetic moment is explored for use in the design of a neutron diode or valve that allows a neutron flux to pass in one direction, while preventing ... -
A rockoon closed helium buoyancy system; a first assessment
(British Interplanetary Society, 2023-03-30)
Article
Accés restringit per política de l'editorialIt is believed that the use of rockoons will revolutionize the space industry by giving priority service to microsatellite developers that now are secondary payloads for large rocket companies. However, stratospheric ... -
A short survey for a thermo-ducted kitchen hood wasted heat self-powered
(ASME International, 2022-08-17)
Article
Accés obertIn this note, a brief survey is given to the possibility for a thermo-ducted kitchen hood where exhaust fan or other mechanical devices are no longer needed, and then, in addition, no sound is generated. The aim of this ... -
A simple analytic formulae for the effective thermal conductivity of dilute dispersion of hollow and floating hollow spheres
(2023-03-31)
Apunts
Accés restringit per política de l'editorialIn this work, utilizing a generalization of Maxwell’s method a simple expression for the effective thermal conductivity of dilute dispersion of hollow spheres was derived. It is shown that the formulae is similar to that ... -
A tentative mechanism for dust vertical transport at extreme altitudes from the collapse of supersaturated tropospheric cavities on Mars with particular reference to march 2012 event
(2017)
Text en actes de congrés
Accés obertConsideration is given to the formation and collapse of supersaturated tropospheric cavities on Mars for dust vertical transport at extreme altitudes as a tentative mechanism explaining the martian march-2012 plume. It ... -
An atmospheric mechanism for generation of crustal magnetism on Mars
(2019-04-11)
Report de recerca
Accés obert -
An estimate for thermal osmotic heat storage using precipitation of common salts
(2019-09-09)
Article
Accés obertIn this brief note, a first assessment on the possibilities for thermal osmotic storage by harnessing the thermal dependence of the solubility of common salts as an alternative method to sensible heat storage is discussed. ... -
Are runners more prone to become infected with COVID-19? An approach from the raindrop collisional model
(springer-Verlag, 2020-08-05)
Article
Accés obertIt is known that COVID-19 spread mainly from person-to-person through respiratory droplets produced when an infected person coughs or sneezes, and as a result certain ideas about contagious of COVID-19 have been spread. ... -
Capas de CulnSe2 para células solares: análisis por espectroscopia Raman de capas pobres en Cu
(Universitat Politècnica de Catalunya, 2009-06)
Projecte/Treball Final de Carrera
Accés obertEn este trabajo se presenta un estudio mediante espectroscopía Raman de capas CuInSe2 sintetizadas en condiciones de defecto de Cu, en función de su composición. El interés del estudio viene motivado por el potencial de ... -
CO2-cushion vehicle for Mars. An alternative locomotion for exploration rovers
(American Institute of Aeronautics and Astronautics (AIAA), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work, consideration is given to ad hoc cushion vehicles for Mars. On Earth, air cushion vehicles use pressurized atmospheric air by means of powerful blowers that pump the air into a chamber, however, for Mars -at ... -
Concerning the role of cigarette smoke particles on aerosolization and transport of COVID-19 through face masks
(2021-04-19)
Report de recerca
Accés obertIn this note the role of cigarette smoking in the aerosolization and transport of COVID-19 through face masks is considered. On one hand, it is known that COVID-19 spreads primarily through water droplets generated ... -
Deliberate salinization of seawater for desalination of seawater
(2017-09-15)
Article
Accés restringit per política de l'editorialThe basis of a novel method for seawater desalination is outlined. In this work, pressure-retarded osmosis (PRO) energy is obtained and used posteriorly for the reverse osmosis (RO) process for seawater desalination. ...
