Layers within layers: quantifying seasonal versus event processes in Arctic clastic varved sediments

Metal-rich layers in pelagic sediments.

quately purified glucose fractions. Furthermore, in view of the extreme transiency of their observed effect (<30 seconds after the pulse), how do Huang and Veech exclude a more likely possibility? Their fleeting effect, if it were true, could be due to the known G6Pase activity in the vascular endothelial cells in which the injected glucose must equally transiently reside before transfer to the...

Early diagenetic processes generate iron and manganese oxide layers in the sediments of Lake Baikal, Siberia.

Distinct layers of iron(III) and manganese(IV) (Fe/Mn) oxides are found buried within the reducing part of the sediments in Lake Baikal and cause considerable complexity and steep vertical gradients with respect to the redox sequence. For the on-site investigation of the responsible biogeochemical processes, we applied filter tube samplers for the extraction of sediment porewater combined with ...

Bridging Abstraction Layers in Process Mining: Event to Activity Mapping

The Effect of Siliconizing and Borosiliconizing Processes on Microstructure and Morphology of Carbon Steel Surface Layers

A study for optimizing of siliconizing and borosiliconizing processes on carbon steels has been carried out. The process parameters, i.e, time and powder mixture, were considered for optimization of the case depth, surface quality and the hardness profile. Time and temperature of the processes were 4 hr and 950˚C, respectively. Powder mixture in siliconizing process was 2.5% ferrosilicon, 2.5%...

The Effect of Siliconizing and Borosiliconizing Processes on Microstructure and Morphology of Carbon Steel Surface Layers

A study for optimizing of siliconizing and borosiliconizing processes on carbon steels has been carried out. The process parameters, i.e, time and powder mixture, were considered for optimization of the case depth, surface quality and the hardness profile.&#10Time and temperature of the processes were 4 hr and 950˚C, respectively. Powder mixture in siliconizing process was 2.5% ferrosilicon, 2....