based on driving force for crystallization of one-component gas hydrate, in this report an expression for the supersaturation for crystallization of multicomponent gas hydrate is derived. expressions for the supersaturation are obtained in isothermal and isobaric regimes. the results obtained are applied to the crystallization of hydrates of mixtures of methane plus ethane and can apply to othe...

dual phase steels with different martensite volume fraction and morphology were tensile tested at a temperature range of 25 to 5500c. stress-strain curves of all steels showed serration flow at temperatures of 250 and 3500c, and smooth flow at the other temperatures. both yield and ultimate tensile strengths increased with increasing testing temperature up to about 4500c and then decreased at h...

The aim of this study was to develop a microemulsion system as a medium for laccase-catalyzed reactions. Phase behavior studies were conducted by constructing partial pseudo-ternary phase diagrams for systems comprising of cetyltrimethylammonium bromide (CTAB), various organic solvents as the oil phase (i.e., hexane, cyclohexane, heptane, octane, isooctane, toluene, isopropyl myristate), two co...

wax precipitate is one of the most serious issues the oil industry is currently facing, since it can cause some troubles such as increasing of the pressure losses in pipe which subsequently increases the required power for pumpage. to remove this problem, prediction of wax disappearance temperature (wdt) seems necessary. in this study, the pressure influence on the wax disappearance temperature...

Nonstationary signals appear often in real-life applications and many of them can be modeled as polynomial phase signals (PPS). High-order ambiguity function (HAF) was rst introduced to estimate the parameters of a single component PPS. But due to its high nonlinearity, HAF has not been widely used for multi-component PPS which appear for example, in Doppler radar applications when multiple tar...

The multi-phase optimization strategy (MOST) is an experimental framework for achieving the goals of developing, optimizing and evaluating multi-component behavioral interventions. MOST was proposed by Collins et al. [8] as a precursor to a randomized confirmatory trial. MOST consists of three ordered phases: screening, refining, and confirming ; and it utilizes fractional factorial designs whe...

Abstract One of the challenges in computational design pre-alloyed powders for sintering is absence predictive, efficient, and fast acting models that enable space alloys to be tractable. This study presents an efficient predictive model simulate densification as well shape distortion powder compacts during supersolidus liquid phase (SLPS). The combines generalized viscous theory with microstru...

The thermodynamic properties of fluid mixtures play a crucial role in designing physically meaningful models and robust algorithms for simulating multi-component multi-phase flow subsurface, which is needed many subsurface applications. In this context, the equation-of-state-based flash calculation used to predict equilibrium each phase given mixture going through splitting component, often bot...