Zusammenfassung Mit den am 11.2.2017 in Kraft getretenen wasserhaushaltsrechtlichen Regelungen, die das hydraulic fracturing – Fracking von unkonventionellen Lagerstätten verbieten, ist eine Einschränkung der damit verbundenen technologischen Möglichkeiten vorgenommen worden. Die Fracking-Technologie könnte einen Beitrag zur autonomen Energieversorgung leisten, insbesondere hinsichtlich Strateg...

objective: the purpose of this study was to examine the prediction of depression on a group of ‎iranian older adults based on components of health locus of control.‎ method: sixty-six men and 42 women over the age of 55 were recruited from the retirement ‎clubs in shiraz, using convenience sampling. the participants completed the research ‎questionnaires including the geriatric depression scale...

This paper integrates logical and probabilistic approaches to the representation of planning problems by developing a first-order logic of time, chance, and action. We start by making explicit and precise commonsense notions about time, chance, and action central to the planning problem. We then develop a logic, the semantics of which incorporates these intuitive properties. The logical languag...

It has long been conjectured that the canonical genetic code evolved from a simpler primordial form that encoded fewer amino acids [e.g., Crick, F. H. C. (1968) J. Mol. Biol. 38, 367-379]. The most influential form of this idea, "code coevolution" [Wong, J. T.-F. (1975) Proc. Natl. Acad. Sci. USA 72, 1909-1912], proposes that the genetic code coevolved with the invention of biosynthetic pathway...