In the current ΛCDM cosmological scenario, N -body simulations provide us with a Universal mass profile, and consequently a Universal equilibrium circular velocity of the virialized objects, as galaxies. In this paper we obtain, by combining kinematical data of their inner regions with global observational properties, the Universal Rotation Curve (URC) of disk galaxies and the corresponding mas...

We study regenerated high-energy emission from the gamma-ray burst (GRB) afterglows, and compare its flux with the direct component from the same afterglow. When the intrinsic emission spectrum extends to TeV region, these very high-energy photons are significantly absorbed by the cosmic infrared background (CIB) radiation field, creating electron/positron pairs; since these pairs are highly en...

The best measured rotation curve for any galaxy is that of the dwarf spiral DDO 154, which extends out to about 20 disk scale lengths. It provides an ideal laboratory for testing the universal density profile prediction from high resolution numerical simulations of hierarchical clustering in cold dark matter-dominated cosmological models. We find that the observed rotation curve cannot be fit e...

\textbf{GalRotpy} is an educational \verb+Python3+-based visual tool, which useful to undestand how the contribution of each mass component gravitational potential disc-like galaxies by means their rotation curve. Besides, allows user perform a parametric fit given curve, relies on MCMC procedure implemented using \verb+emcee+ package. Here built from Miyamoto-Nagai model for bulge/core and thi...

We are undertaking a large scale radial velocity survey of the Galactic bulge which uses M giant stars selected from the 2MASS catalog as targets for the CTIO 4m Hydra multi-object spectrograph. The aim of this survey is to test dynamical models of the bulge and to quantify the importance, if any, of cold stellar streams in the bulge and its vicinity. Here we report on the kinematics of a strip...

In many studies, it has been hypothesized that stress and its biologic consequences may contribute to disparities in rates of cardiovascular disease. However, understanding of the most appropriate statistical methods to analyze biologic markers of stress, such as salivary cortisol, remains limited. The authors explore the utility of various statistical methods in modeling daily cortisol profile...

A total of 559 methicillin-resistant Staphylococcus aureus isolates were investigated for heterogeneous vancomycin-intermediate S. aureus (hVISA) by population analysis profile area under the curve. Our results suggested that the incidence of hVISA increased rapidly when vancomycin MIC shifted from 1 to 2 μg/mL, and at vancomycin MIC of 2 μg/mL, the incidence of hVISA was nearly 40%.

The possibility of application of the advanced hypertrochoid curve in the inner surface of the stator of fixed displacement hydraulic vane pump, theoretically was studied in the last our work. By considering the properties of this curve, sealing action between pressure and suction sides of the pump can be improved. One of the important characteristics of a new profile must be improving of the i...