We prove that if $R$ is a commutative Noetherian ring, then every countably generated flat $R$-module quite flat, i.e., direct summand of transfinite extension localizations in countable multiplicative subsets. also show the spectrum cardinality less than $\kappa$, where $\kappa$ an uncountable regular cardinal, modules with generators. This provides alternative proof fact over ring spectrum, a...

in this paper, an integration of a symbolic power series method - padé approximation technique (ps - padé), was utilized to solve a system of nonlinear differential equations arising from the similarity solution of laminar thermal boundary layer over a flat plate subjected to a convective surface boundary condition. as both boundary conditions tended to infinity, the combination of series solut...

the falling and settling of solid particles in gases and liquids is a natural phenomenon happens in many industrial processes. this phenomenon has altered pure forced convection to a combination of heat conduction and heat convection in a flow over a plate. in this paper, the coupling of conduction (inside the plate) and forced convection of a non-homogeneous nanofluid flow (over a flat plate) ...

Bernal stacked bilayer graphene subject to a superlattice potential can realize topological and flat bands [Ghorashi et al., Phys. Rev. Lett. 130, 196201 (2023)]. In the present work, we extend study of on heterostructures trilayer quadrilayer graphene. Comparing Bernal- chirally multilayers reveals that latter are more suitable for realizing stacks many bands. On other hand, Bernal-stacked Imp...

The effects of drip irrigation and different cultivation methods on seedgermination and growth of Puccinellia tenuiflora in saline-sodic soils wereinvestigated in field experiments during 2008-2010 in the Songnen Plain, China.Drip irrigation was applied to waste saline-sodic P. tenuiflora grasslands for bothflat and ridge cultivation methods. Drip irrigation affected the distributions ofelectri...

1269 We appreciate the interest of Siondalski et al. [1] and his group beside numerous other international groups in working on autologous aortic valve prosthesis. We experienced tremendous interest, especially in countries where patients need a priceless and reliable bioprosthesis without the need for anticoagulation and with advantageous hemodynamics especially in the smaller sizes. Siondalsk...

Novel structure of a Photonic Crystal Fiber (PCF) is proposed for flattened dispersion characteristics. As compared with the conventional PCFs, the proposed PCF has no air holes in second ring area. Then the proposed PCF has a concentric missing ring PCF. Here silica glass is used as core material. It has been demonstrated that when we change the layer of PCF, dispersion is also changed. The ch...