Abstract It was recently proposed that the dark matter–deficient ultradiffuse galaxies DF2 and DF4 in NGC 1052 group could be products of a “bullet dwarf” collision between two gas-rich progenitor galaxies. In this model, formed at same time immediate aftermath collision, strong prediction is their globular clusters should have nearly identical stellar populations. Here we test by measuring acc...

Using first principle methods, we study the mechanical properties of monolayer and bilayer graphene with 50% and 100% coverage of hydrogen. We employ the vdW-DF, vdW-DF-C09x, and vdW-DF2-C09x van der Waals functionals for the exchange correlation interactions that give significantly improved interlayer spacings and energies. We also use the PBE form for the generalized gradient corrected exchan...

We report first-principles calculations for a ferroelectric organic crystal of phenazine and chloranilic acid molecules. Weak intermolecular interactions are properly treated by using a second version of the van der Waals density functional known as vdW-DF2 [K. Lee et al., Phys. Rev. B 82, 081101 (2010)]. Lattice constants, total energies, spontaneous electric polarizations, phonon modes and fr...

The purpose of the study. This study was to determine difference between drill and play training methods on badminton playing skills. Materials methods.The method used is experimental method. research subjects were 30 male athletes at PB Aneka club had taken achievement motivation test. data collection tool in this Playing Badminton hypothesis test anova one way. Results. results high group obt...

Drip irrigation can reduce water and fertilizer use; however, the frequency of topdressing required for drip wheat in Huang-Huai-Hai region is still unclear. Through two continuous season field experiments, yield related traits under traditional surface (border irrigation) three fertilization frequencies (DF2, DF3, DF4, that was, twice, or four times same way during growth period) cultivars (Ji...

abstract This is an extension of quantum spinor construction in [DF2]. We define quantum affine Clifford algebras based on the tensor category and the solutions of q-KZ equations, construct quantum spinor representations of U q (ˆ gl(n)) and explain classical and quantum boson-fermion correspondence. I. Introduction. The independent discovery of a q-deformation of universal enveloping algebra o...

In this paper we propose a new perspective for explaining galaxy rotation curves. We conjecture that there is gravitational moment of inertia which, together with mass, contributes to the potential. substantiate formula potential created by inertia. validate our model computing orbital velocities several galaxies and showing computed correspond observed ones. Our proposed approach capable accou...