In this Paper we report on phase resolved I–band optical spectroscopic and photometric observations of Cir X–1 obtained with the Very Large Telescope. The spectra are dominated by Paschen absorption lines at nearly all orbital phases except near phase zero (coinciding with the X–ray dip) when the absorption lines are filled–in by broad Paschen emission lines. The radial velocity curve of the ab...

Due to their (a) lower draught force requirements and (b) ability work at deeper operation depths faster speeds, disc ploughs have gained interest in Australia. A modified version of the plough that involves removing every second fitting larger often more concave discs has become popular. However, development one-way is its infancy, a detailed analysis required, particularly on soil movement. H...

There has been much debate as to the relative merits of belt conveyors with ploughs vs. chain-slat conveyors with gates for this application. There are experienced engineers in strong support of each alternative. In many cases, the strength of the support for one type is due to bad experience with a poorly designed or under-capacity conveyor of the other. Unfortunately, the majority of conveyor...

The power of technology to transform religions, science, and political institutions has often been presented as nothing short revolutionary. Does have a similarly transformative influence on societies’ morality? Scholars not rigorously investigated the role in moral revolutions, even though existing research technomoral change suggests that this may be considerable. In paper, we explore what un...

background & importance: disc herniation is defined as the prolapsed of material disc into the spinal canal. if the disc fragment is free in spinal canal, it is called sequestration disc fragment. occasionally, alteration in sequestration disc fragment makes the diagnosis of the disc herniation, challenging. case presentation: we reviewed a rare case of the cervical sequestrated disc herniation...