The use of molecular hydrogen as electron donor for energy generation is a defining characteristic of the hydrogenotrophic methanogens, an ancient group that dominates the phylum Euryarchaeota. We present here a global study of changes in mRNA abundance in response to hydrogen availability for a hydrogenotrophic methanogen. Cells of Methanococcus maripaludis were grown by using continuous cultu...

Physical activity and body composition were examined with respect to variation in functional limitation over a 6-year period (four surveys conducted between 1994 and 2000) based on a cohort of 1,655 community-dwelling older women and men living in Sonoma, California. Measures of functional limitation and physical activity were based on standard self-report questions. Measures of body compositio...

In this paper we deal with an emergent security problem related to mobile ad hoc network (MANET) to which we present a gradual solution. This new problem is node selfishness on packet forwarding. The resource limitation of nodes forming the ad hoc network, particulary the energy limitation, along with the multi-hop nature of this network may cause a new phenomena which does not exist in the tra...

OBJECTIVES The current Recommended Dietary Allowance (RDA) for protein is based on short-term nitrogen balance studies in young adults and may underestimate the amount needed to optimally preserve physical function in older adults. We examined the association between protein intake and the onset of mobility limitation over 6 years of follow-up in older adults in the Health ABC study. DESIGN P...

For people with disabilities the Web holds great chances for transforming former barriers to information access, communication and participation at work and in social life. The research question underlying the described project is: What potentials do the Web and the latest Internet-technologies offer to students with extensive mobility limitations in terms of staying in touch with other people ...

Recent evidence suggests that music-based movement (MbM) therapy may be a promising intervention to improve gait and gait-related activities in Parkinson's disease (PD) patients, because it naturally combines cognitive movement strategies, cueing techniques, balance exercises and physical activity while focussing on the enjoyment of moving on music instead of the current mobility limitations of...

The limitation of resources, i.e. materials and energy, linked with increasing prices forces enterprises to operate economically with their material and energy consumption. But many companies, as experience shows, are not able to take action as they are unaware of ways to identify efficiency potentials within their production processes. This applies primarily to small and medium enterprises, wh...