Transition metal dichalcogenides belong to one of the most developed classes of materials for solid lubrication. However, one of the main drawbacks of most of the self-lubricating coatings is their low load-bearing capacity, particularly in terrestrial atmospheres. In our previous work, alloying thin films based on tungsten disulfide with non-metallic interstitial elements, such as carbon or ni...

We investigate the polynomial time isomorphic type structure of PT ⊂ {A : A ⊆ {0}∗} (the class of tally, polynomial time computable sets). We partition PT into six parts: D−, D̂−, C, S, F, F̂ , and study their p-isomorphic properties separately. The structures of 〈deg1(F ); ≤〉, 〈deg1(F̂ ); ≤〉, and 〈deg1(C); ≤〉 are obvious, where F , F̂ , and C are the class of tally finite sets, the class of tally ...

Theoretical study of the electronic structure, and nonlinear optical properties (NLO) analysis of 12-crown-4were done using Density Functional Theory (DFT) evaluations at the B3LYP/6-311G (d,p) level of theory. The optimized structure is nonlinear compound as indicated from the dihedral angles were presented. The calculated EHOMO and ELUMO energies of 12-Crown-4 (12CN4) ca...

The lack of hydrological data for urbanizing watersheds in developing countries is one of the challenges facing decision making. Msimbazi River is located in the city center of Dar es Salaam and is highly influenced by human activities; this includes dense populations that are characterized by informal settlements. The catchment is currently undergoing flooding, which triggers a dilemma in its ...

We investigate a novel single field inflationary scenario which allows transition between slow-roll k-inflation with $c_{\rm s}$ of order unity and ghost inflation $ c_{\rm s} \simeq 0$, where is the sound speed for curvature perturbations. unify two phases smoothly by appropriately taking into account higher derivative scordatura term, always there from effective theory point view but becomes ...

Our main aim is to present a geometrically meaningful formula for the fundamental solutions to a second order sub-elliptic differential equation and to the heat equation associated with a sub-elliptic operator in the sub-Riemannian geometry on the unit sphere S. Our method is based on the Hamiltonian-Jacobi approach, where the corresponding Hamitonian system is solved with mixed boundary condit...