Search results for "STIR"
showing 10 items of 426 documents
Power requirements for complete suspension and aeration in an unbaffled bioslurry reactor
2016
Remediation of contaminated soils is spreading as a matter of crucial importance nowadays. Bioremediation via bioslurry reactors of sites polluted by recalcitrant pollutants has been proved to be a valuable option, although optimization is needed to reduce process costs. Free-surface unbaffled stirred tanks (with central air vortex) have been recently proposed as a promising alternative to the more common systems provided with baffles. In a bioslurry reactor solid-liquid interfacial area, oxygen supply, solid loading per reactor unit volume should be maximized, and, at the same time, operation costs have to be kept low. In this regard, the minimum impeller speeds for complete suspension Njs…
Defensa juridica por Mosen Sebastian Chafreon ... Administrador de la Administracion de Lorenzo Geronimo Ridaura. Contra el Convento de Nra. Sra. del…
1742
Signat al final: "Dr. Joseph Boyl" Port. orlada Grav. xil. enmarcat de "S. Antonio de Padua" a la port Caplletra ornada al començament del text i altres ornaments tip Sign.: [A]2, B2, C3 Reclams
Wear Analysis During Friction Stir Processing of A359+20%SiC MMC
2009
Metal Matrix Composites (MMC) are very interesting materials for applications in the automotive and aerospace fields, since they combine the lightness of Aluminium with the strength of the ceramic reinforcement. These materials are very difficult to join and conventional welding techniques are not applicable, whereas solid-state welding techniques, like Friction Stir Welding (FSW), could be a solution. However very hard tool materials will need to be chosen in order to overcome the problem of heavy abrasive tool wear. In this work the wear behaviour of coated and uncoated steel tools has been investigated in the Friction Stir Processing of extruded bars in A359 + 20%SiC. AISI 1040 steel was…
Prego fet per la present ciutat de Valencia, en que dona forma al preu de les robes que venen los botiguers.
1667
Sign.: []1, A3 Esc. de la Ciutat de València grav. a la port.
Design of a power conditioning unit for a Stirling generator in space applications
2012
The Free-Piston Stirling Generator (FPSG) is a thermal to electrical energy conversion system, based upon the thermal engine of the same name. Intensive research concerning the feasibility of the engine for its application in deep space and planetary missions has been conducted, primarily due to the potential increase in efficiency (−30%) over the currently used Radio-isotope Generators (RTGs). On the other hand, less attention has been paid to the power conditioning requirements and alternatives. The present work has investigated on the dynamics governing the FPSGs in order to assess the design requirements for the subsequent power-conditioning unit (PCU). Thereafter, two alternatives of A…
Meidän herramme ja meidän häviäjämme
2019
Luokkakonfliktin ytimessä ovat arvot. Virossa konservatiivisen kansanpuolue EKREn ja sosiaalidemokraattisen SDE:n välisessä konfliktissa kansaa jaetaan herroihin ja häviäjiin. nonPeerReviewed
Material flow analysis in dissimilar friction stir welding of AA2024 and Ti6Al4V butt joints
2016
The complex material flow occurring during the weld of dissimilar AA2024 to Ti6Al4V butt and lap joints was highlighted through a dedicated numerical model able to take into account the effects of the different materials as well as the phase transformation of the used titanium alloy.
A comparative high-pressure jet-stirred reactor study on the oxidation of pentanol isomers: 1-, 2- and 3- pentanol
2018
International audience
La rappresentazione della natura tra ornamento e narrazione. Il bestiario di Roma tra i secoli XI e XII
2012
International audience