Dating of pore waters with (129)I: relevance for the origin of marine gas hydrates.

Pore waters associated with gas hydrates at Blake Ridge in the Atlantic Ocean were dated by measuring their iodine-129/iodine ratios. Samples collected from sediments with ages between 1.8 and 6 million years ago consistently yield ages around 55 million years ago.

Sediment content of metals before and after lake water liming.

Long-term liming (1980-1991) of an acidified lake (Lake Terjevann) in the southernmost part of Norway, show an increased accumulation of Al, Fe, Mn, Cd, Cu, Ni, Zn in the sediments which clearly corresponds with the liming history. The increased precipitation of Al, Fe and Mn are ascribed to extended formation of oxyhydroxides due to increased pH after introduction of the lime. Statistically significant correlations indicate that Cu, Ni and Zn are coprecipitated with both Al and Fe oxyhydroxides while Cd is coprecipitated primarily with Fe oxyhydroxides both previous to and after lake water liming.

Creatine supplementation delays onset of fatigue during repeated bouts of sprint running.

In this study we have investigated the effect of creatine supplementation on performance of repeated sprint runs in well-trained young male handball players. The subjects participated in a test before supplementation (T1) and then received creatine (15 g/d) or placebo for five days before a second test was carried out (T2). Following T2, a low dose of creatine (2 g/d) or placebo was maintained for an additional nine days before the third test was performed (T3).