We examine the black hole mass galaxy bulge relationship in high-redshift QSOs. Black hole masses are derived from the broad emission lines, and the host galaxy stellar velocity dispersion σ∗ is estimated from the widths of the radio CO emission lines. At redshifts z > 3, the CO line widths are narrower than expected for the black hole mass, indicating that these giant black holes reside in und...

Black stain is characterized as a dark line or an incomplete coalescence of dark dots localized on the cervical third of the tooth. Over the last century, the etiology of black stain has been the subject of much debate. Most of the studies concerning this issue were conducted in pediatric population. According to the reviewed articles published between 2001 and 2014, the prevalence of black sta...

Relativistic X-ray emission lines from the inner accretion disk around black holes are reviewed. Recent observations with the Chandra X-ray Observatory, X-ray MultiMirror Mission-Newton, and Suzaku are revealing these lines to be good probes of strong gravitational effects. A number of important observational and theoretical developments are highlighted, including evidence of black hole spin an...

Many existing network protocols need to be adaptively configured for the prevailing network conditions. This paper presents a scalable and flexible network protocol configuration tool, the on-line simulation scheme. The optimal configuration of network protocols can be formulated as a black-box optimization problem where the network is considered as a black-box and its performance can be evalua...

In order to examine the relationship between the black hole mass MBH and stellar velocity dispersion σ∗ in radio-loud active galactic nuclei (AGNs), we study two effects which may cause the uncertainty of black hole mass estimates for radio-loud AGNs: the relativistic beaming effect on the observed optical continuum radiation and the orientation effect on broad emission line width. After correc...

The management of power systems has become more difficult than earlier because power systems are operated closer to security limits, environmental constraints restrict the expansion of transmission network, the need for long distance power transfers has increased and fewer operators are engaged in the supervision and operation of power systems. Voltage instability has become a major concern in ...

We present an evolutionary model for starbursts, quasars, and spheroidal galaxies in which the growth of supermassive black holes plays a dominant role. In this picture, mergers between gas-rich galaxies drive nuclear inflows of gas, producing intense starbursts and feeding the growth of supermassive black holes. During this phase, the black hole is heavily obscured (a “buried” quasar), but fee...

Introduction: Polycystic ovary syndrome (PCOS) is a complex endocrine disorder in women that is associated with an increased risk of infertility. This study aims to evaluate the neurobehavioral and neurochemical changes along with the associated changes in the medial prefrontal cortex (mPFC) and anterior cingulate cortex (ACC) of the dehydroepiandrosterone (DHEA)-induced PCOS model rats. Metho...

Aims. ESO 243-49 HLX-1, otherwise known as HLX-1, is an intermediate mass black hole (IMBH) candidate located 8 (3.7 Kpc) from the centre of the edge-on S0 galaxy ESO 243-49. How the black hole came to be associated with this galaxy, and the nature of the environment in which it resides, are still unclear. Using multi-wavelength observations we investigate the nature of the medium surrounding H...

We use the method of Press, Rybicki & Hewitt (1992) to search for time lags and time leads between different energy bands of the RXTE data for MCG–6-30-15. We tailor our search in order to probe any reverberation signatures of the fluorescent iron K line that is thought to arise from the inner regions of the black hole accretion disk. In essence, an optimal reconstruction algorithm is applied t...