Results 71 to 80 of about 5,849 (298)

La conversion des résidus et huiles lourdes : au carrefour du thermique et du catalytique Conversion of Residues and Heavy Oils At the Crossroads of Thermal Cracking and Catalytic Reactions

open access: yesOil & Gas Science and Technology, 2006
Cet article passe en revue les diverses familles de procédés de conversion des résidus et huiles lourdes. Tous les résultats semblent converger pour accréditer l'idée que dans tous ces procédés, y compris les procédés dits catalytiques, l'essentiel de la
Le Page J. F., Davidson M.
doaj   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Extracció amb CO2 supercrític: II. Aplicacions a la indústria alimentària [PDF]

open access: yes, 2006
La tècnica d'extracció amb fluids supercrítics (ESC) a la indústria alimentària i amb CO2 com a dissolvent està plenament establerta, sobretot en processos de descafeïnat de cafè i te, extracció de llúpol, extracció d'aromes i sabors d'espècies i herbes ...
Asensio, D.   +2 more
core  

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Structures des fractions lourdes. Méthodes d'analyse et préparation des charges Structures of Heavy Fractions. Feedstock Analysis and Preparation Methods

open access: yesOil & Gas Science and Technology, 2006
Après avoir défini les termes fractions lourdes et pétroles bruts lourds, et avoir souligné l'intérêt économique qu'il y a à utiliser ces matériaux, on passera en revue les techniques analytiques disponibles pour aborder les difficiles problèmes ...
Vercier P.
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

La educación impresa [PDF]

open access: yes, 2004
Se trata en este artículo de un acercamiento a los testimonios impresos de las obras destinadas al aprendizaje lector y a la de los distintos grados de la formación elemental.
Infantes, Víctor
core   +1 more source

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

open access: yesAdvanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell   +3 more
wiley   +1 more source

5 MW Wind Turbine Annual Energy Production Improvement by Flow Control Devices

open access: yesProceedings, 2018
Several flow control devices have been studied in recent years. Majority of them were designed firstly for aeronautical purposes. At present many research is aimed to introduce these devices in wind turbines (WTs) in order to optimize their aerodynamic ...
Aitor Saenz-Aguirre   +6 more
doaj   +1 more source

Desenvolupament d'un sistema per a la fabricació de prototips dús mèdic mitjançant tecnologies d'impressió 3D amb liquids solidificables [PDF]

open access: yes, 2017
Les tecnologies d’impressió 3D fins al moment s’han centrat en el desenvolupament i millora de les impressions amb materials termoplàstics basats en l’extrusió de filament rígid que donen lloc a productes igualment rígids.
Gonzalez Gobartt, Fernando   +1 more
core   +1 more source

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