Results 41 to 50 of about 78,816 (300)

P-small Compressible Modules and P-small Retractable Modules

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2023
Let  be a commutative ring with 1 and  be left unitary  . In this papers we introduced and studied concept P-small compressible  (An     is said to be P-small compressible if  can be embedded in every of it is nonzero P-small submodule of . Equivalently,
Mohammed Baqer ALHakeem   +1 more
doaj   +1 more source

Modeling Hypersonic Flow over a Spiked Blunt Body Using Adaptive Mesh Refinement on an Overset Grid [PDF]

open access: yesJournal of Applied Fluid Mechanics
In comparison to conventional single-grid methods, grid-adaptive overset techniques offer a strong, flexible, and efficient solution approach for computational fluid dynamics in the modeling of flows with complex interactions.
M. El Hajj Ali Barada, B. Celik
doaj   +1 more source

A compressible mixture model with phase transition [PDF]

open access: yes, 2013
We introduce a new thermodynamically consistent diffuse interface model of Allen--Cahn/Navier--Stokes type for multi-component flows with phase transitions and chemical reactions.
Giesselmann, Jan   +2 more
core   +1 more source

Enhancement of aerodynamic performance of axial compressors utilizing natural aspiration through optimized casing circumferential slot

open access: yesScientific Reports
This paper presents results of aerodynamic enhancement of axial compressors utilizing optimum natural aspiration through a circumferential slot made within the casing wall upstream the rotor blades row.
Peyman Ghashghaie Nejad   +1 more
doaj   +1 more source

Influence of the Gas Model on the Performance and Flow Field Prediction of a Gas–Liquid Two-Phase Hydraulic Turbine

open access: yesEnergies, 2022
A two-phase hydraulic turbine’s performance and flow field were predicted under different Inlet Gas Volume Fractions (IGVF) with incompressible and compressible models, respectively.
Shuaihui Sun   +4 more
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Smaller is better: nanobodies meet NMR

open access: yesFEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

Heat Convection of Compressible Viscous Fluids. I. [PDF]

open access: yes, 2012
The stationary problem for the heat convection of compressible fluid is considered around the equilibrium solution with the external forces in the horizontal strip domain z_0 < z < z_0 + 1 and it is proved that the solution exists uniformly with
Teramoto, Yoshiaki   +2 more
core  

On large bending deformations of transversely isotropic rectangular elastic blocks [PDF]

open access: yes, 2007
In this paper we examine the classical problem of finite bending of a rectangular block of elastic material into a sector of a circular cylindrical tube in respect of compressible transversely isotropic elastic materials.
Kassianidis , Fotios   +3 more
core   +1 more source

The Complete Model of Wet Air Analysis in Mine Ventilation Design (CMWAA Method) [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering
The ventilation design of mines is based on fluid dynamics. Air is the main fluid in mining ventilation. This fluid is analyzed by two models: incompressibility and compressibility.
Ebrahim Elahi Zeyni   +2 more
doaj   +1 more source

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