Genre analysis as an area of great concern in recent decades, involves the observation of linguistic features used by a determined discourse community. The research article (RA) is one of the most widely researched genres in academic writing which is realized through some rhetorical moves and discursive steps to achieve a communicative purpose. This study aimed at proposing a model of generic p...

Abstract The present study analyzes conjugate heat transfer in a differentially heated square cavity. left wall of the cavity is cooled, and right while horizontal walls are adiabatic. Normalized continuity, momentum energy transport equations were solved with aid COMSOL Multiphysics 5.4 software. effects Rayleigh number range 10 2 ? RA 6 Prandtl 0.71 PR 100 on streamlines, isotherms, overall r...

asphaltenes are the n-pentane or n-heptane insoluble fractions of crude oil that remain in solution under reservoir temperature and pressure conditions. they are destabilized and start to precipitate when the pressure, temperature and/or composition changes occur during primary production. the precipitated asphaltene particles will then grow in size and may start to deposit onto the production ...

The minimum miscibility pressure (MMP) is one of the crucial and substantial parameters in the gas injection projects for enhanced oil recovery (EOR). This parameter indicates the minimum pressure at constant temperature and composition conditions for reaching 100 percent of the oil production recovery which leads to a huge economic income. Therefore, an inaccurate prediction of the MMP may lea...

Consider a set of r convex d-polytopes P1, P2, . . . , Pr, where d ≥ 3 and r ≥ 2, and let ni be the number of vertices of Pi, 1 ≤ i ≤ r. It has been shown by Fukuda and Weibel [4] that the number of k-faces of the Minkowski sum, P1 + P2 + · · · + Pr, is bounded from above by Φk+r(n1, n2, . . . , nr), where Φl(n1, n2, . . . , nr) = ∑ 1≤si≤ni s1+...+sr=l ∏ r i=1 ( ni si ) , l ≥ r. Fukuda and Weib...

We propose a model of songbird learning that focuses on avian brain areas HVC and RA, involved in song production, and area LMAN, important for generating song variability. Plasticity at HVC --> RA synapses is driven by hypothetical "rules" depending on three signals: activation of HVC --> RA synapses, activation of LMAN --> RA synapses, and reinforcement from an internal critic that compares t...

We report on the influence of rotation about a vertical axis on heat transport by turbulent Rayleigh–Bénard convection in a cylindrical vessel with an aspect ratio Γ ≡ D/L = 0.50 (D is the diameter and L the height of the sample) and compare the results with those for larger Γ . The working fluid was water at Tm = 40 ◦C where the Prandtl number Pr is 4.38. For rotation rates Ω . 1 rad s−1, corr...

aim : this study compared pr and nb in predicting hcv patient costs. the objective of this study was to predict the direct cost of the hcv patient in iran. background : hepatitis c virus (hcv) is a common and expensive infectious disease in iran. cost associated with hcv and its complications has not been well characterized. analysis of cost data is important in providing consistent information...

The value of ultrasonography (US), magnetic resonance imaging (MRI), computed tomography (CT) and plain radiography (PR) in detecting bone erosions on the humeral head was evaluated in a study of 26 in-patients (26 shoulders) with rheumatoid arthritis (RA). MRI depicted humeral erosions in 25 (96%), US in 24 (92%), CT in 20 (77%) and PR in 19 (73%) of the 26 shoulders. MRI and US were superior ...