In the past Belgian (non-metamorphic) marble from the Maas region was widely applied and exported to far across the borders.It concerns black, red and grey variants originating from the Carboniferous and Devonian periods.Its transport was highly dependent on waterways.Consequently, the river Maas played an important part in the export to the north.
Female escorts represent an occupational group that charges a fee for sex, which can be regarded as an extreme form of short-term mating.The present study examined if the fees charged by escorts are related to traits typically associated with female short-term mate value.A total of 2,925 advertisements for female escorts offering sexual services in
Throughout the history of large decisive campaigns and wars, and more so when opposing forces are clearly defined, appearing on a massive scale, conventional weapons and methods of warfare are produced in enormous quantities, to be used by every able-bodied person available; this because every war holds the threat that a state of attrition will be
To maintain cellular structure and integrity during division, Gram-negative bacteria must carefully coordinate constriction of a tripartite cell envelope of inner membrane, peptidoglycan (PG), and outer membrane (OM).It has remained enigmatic how this is accomplished.Here, we show that envelope machines facilitating septal PG synthesis (PBP1B-LpoB
The success of a spacecraft mission depends to a great extent on the performance of the moving mechanical systems.The most common mode of failure in these systems is tribological.Tribological failures occur mainly due to non availability of lubricant at the working zone of the bearings as a result of degradation, evaporation and creep.The life of t