ABSTRACT The ultra-diffuse galaxy (UDG) NGC 1052-DF2 has a low dark matter content and hosts very unusual globular cluster (GC) population, with median luminosity ?4 times higher than in most galaxies containing about 5 per cent of the galaxy’s stars. We apply theoretical model that predicts initial mass function as galactic environment to investigate origin DF2’s peculiar GC system. Using func...

Tyropeptin A, a potent proteasome inhibitor not reported before, was produced by Kltasatospora sp. MK993-dF2. In this study, we inyestigated the effects of tyropeptin A on proteasome activity in PC12 cells. Tyropeptin A inhibited the intracellular proteasome activity in a dose-dependent way and seemed to cause neurite outgrowth. As expected, ubiquitinated proteins that should be substrates for ...

The rainfall amount and the frequency of extreme events have been predicted to increase in Qinghai-Tibetan Plateau during growing season. These changes will likely affect ecosystem processes, including those that control nitrogen (N) cycling storage; however, direction remains unclear. In this study, we experimentally altered precipitation season (May through October) at an alpine wetland Plate...

NGC1052-DF2 and NGC1052-DF4 are ultra-diffuse galaxies (UDGs) that were found to have extremely low velocity dispersions, indicating they little or no dark matter. Both host anomalously luminous globular cluster (GC) systems, with a peak magnitude of their GC luminosity function (GCLF) is $\sim1.5$ magnitudes brighter than the near-universal value $M_V \approx -7.5$. Here we present an analysis...

Abstract The Ultra-Diffuse galaxy NGC1052-DF2 has recently been revealed to be “extremely deficient” in dark matter, if not lacking it at all. This claim raised many questions regarding the relationship between baryons and matter galaxies. But there seems a quite unanimous belief that, such very low content is confirmed extended other similar galactic objects, might deathblow theories which mod...

Croatian bauxites are long known for their chemical and physical diversity arisen from characteristic origin emplacement within the area of Adriatic–Dinaric carbonate platform (ADCP). They include eight horizons spanning period between Upper Triassic (Carnian) Miocene, formed on subaerially exposed paleoenvironments. The bauxite genesis is recorded in geochemical composition as a unique signatu...

A method for the deformation quantization of coadjoint orbits of semisimple Lie groups is proposed. It is based on the algebraic structure of the orbit. Its relation to geometric quantization and differentiable deformations is explored. Let G be a complex Lie group of dimension n and GR a real form of G. Let G and GR be their respective Lie algebras with Lie bracket [ , ]. As it is well known, ...