Biology of moderately halophilic aerobic bacteria

The moderately halophilic heterotrophic aerobic bacteria form a diverse group of microorganisms. The property of halophilism is widespread within the bacterial domain. Bacterial halophiles are abundant in environments such as salt lakes, saline soils, and salted food products. Most species keep their intracellular ionic concentrations at low levels while synthesizing or accumulating organic solutes to provide osmotic equilibrium of the cytoplasm with the surrounding medium. Complex mechanisms of adjustment of the intracellular environments and the properties of the cytoplasmic membrane enable rapid adaptation to changes in the salt concentration of the environment. Approaches to the study of genetic processes have recently been developed for several moderate halophiles, opening the way toward an understanding of haloadaptation at the molecular level. The new information obtained is also expected to contribute to the development of novel biotechnological uses for these organisms

Do temporary agency workers affect workplace performance?

Using nationally representative workplace data we find the use of temporary agency workers (TAW) is positively associated with financial performance in the British private sector and weakly associated with higher sales per employee. However TAW is not associated with value added per employee. Employees in workplaces with TAW receive higher wages than observationally equivalent employees in non-TAW workplaces. But the presence of TAW in the employee’s occupation is associated with lower wages for employees in that occupation. Furthermore, conditioning on wages, the presence of TAW at the workplace is associated with lower job satisfaction and higher job anxiety among employees. These findings are consistent with TAW having an adverse effect on employees’ experiences at work, perhaps due a more labour intensive regime, one which is only partly compensated for with higher wages