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On the Direct Detection of 229m Th
This thesis describes the first detection of a nuclear transition that had been sought for 40 years, and marks the essential first step toward developing nuclear clocks. Atomic clocks are currently the most reliable timekeepers. Still, they could potentially be outperformed by nuclear clocks, based on a nuclear transition instead of the atomic transitions employed to date. An elusive, extraordinary state in thorium-229 seems to be the only nuclear transition suitable for this purpose and feasible using currently available technology. Despite repeated efforts over the past 40 years, until recently we had not yet successfully detected the decay of this elusive state. Addressing this gap, the thesis lays the foundation for the development of a new, better frequency standard, which will likely have numerous applications in satellite navigation and rapid data transfer. Further, it makes it possible to improve the constraints for time variations of fundamental constants and opens up the field of nuclear coherent control.
Sterne und Weltraum
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Geology and Mineral Resources of Nigeria
Contains details on the geological units of Nigeria and the associated mineral resources. The book is divided into three parts. Part 1 discusses the geology of the crystalline rocks and their regional distribution while the sedimentary basins constitute the subject of Part 2. Part 3 takes the mineral resources of Nigeria one on one, their geological environment, mode of occurrence, localities and where possible the reserves estimation. Thereafter, an account of the previous and current mining policies (including that of petroleum) of the Nigerian government is given and goes ahead to list some specific investment opportunities in the solid minerals sector.
Strategische Wahrheiten
Strategische Kommunikation zielt mit ihren kontingenten Wirklichkeitsbeschreibungen seit jeher auf gesellschaftliche Wahrheitsmodelle. Wie häufig gesellschaftliche Wahrheitsmodelle auf strategische Kommunikationsbemühungen zurückgehen, auf Unwahrhaftigkeit beruhen und damit zumindest zeitweise zu strategischen Wahrheiten werden, zeigen eindrucksvoll zwischenzeitlich geglaubte Wahrheiten, die sich als Lüge entpuppt haben: von Walter Ulbrichts „Niemand hat die Absicht, eine Mauer zu errichten“ über Hitlers Tagebücher bis hin zu den Massenvernichtungswaffen im Irak. Die erfolgreichen Kampagnen der Brexiteers und von Donald Trump 2016 haben diesem Thema zu neuer und bislang ungeahnter ...
