Abstract: The invention relates to a method for diagnosing a disease that is accompanied by reduced bone density and/or calcium loss, comprising the following steps: a) determining isotope ratios or amount ratios of alkaline-earth metal portions in a sample of urine or blood or stool, b) thereby determining at least one sample value, and c) comparing the at least one sample value with a threshold value, the threshold value being selected independently of one or more factors determined by the individual patient. The invention further relates to a test kit for use in carrying out the method.

Abstract: A method for mechanically stabilizing deep sea sediments, marine raw material deposits and/or submarine slope and/or to a control/conditioning method for the hydraulic properties of deep sea sediments. A gas hydrate-forming substance is injected into marine or submarine sediments, and gas hydrate sediment composites are formed.

Abstract: Method for verification of age-depth relationships of rocks in sedimentary basins by reconstructing the subsistence rate of samples, in which, by determining the precipitation depth and precipitation temperature of a carbonate precipitation, wherein by determining the precipitation depth and the precipitation temperature of the carbonate precipitation in the geological-history-determining sedimentary rocks, from which a sample is taken, a set point is fixed.

Abstract: Method for verification of age-depth relationships of rocks in sedimentary basins by reconstructing the subsistence rate of samples, in which, by determining the precipitation depth and precipitation temperature of a carbonate precipitation, wherein by determining the precipitation depth and the precipitation temperature of the carbonate precipitation in the geological-history-determining sedimentary rocks, from which a sample is taken, a set point is fixed.