Carl von Ossietzky University Oldenburg

2 ARTICLES PUBLISHED IN JoVE

Neuroscience

Immunolabeling and Counting Ribbon Synapses in Young Adult and Aged Gerbil Cochleae

Friederike Steenken¹, Sonny Bovee¹, Christine Köppl¹

¹Cluster of Excellence "Hearing4all" and Research Centre Neurosensory Science, Department of Neuroscience, School of Medicine and Health Science, Carl von Ossietzky University Oldenburg

A protocol for processing young adult and aged gerbil cochleae by immunolabeling the afferent synaptic structures and hair cells, quenching autofluorescence in aged tissue, dissecting and estimating the length of the cochleae, and quantifying the synapses in image stacks obtained with confocal imaging is presented.

Chemistry

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Nils Brinkmann¹, Alexander Damps¹, Michael Siemer¹, Jessica Kräuter¹, Frank Rößner¹, Katharina Al-Shamery¹

¹Institute of Chemistry, Carl von Ossietzky University Oldenburg

This protocol shows a convenient method for comparing the catalytic properties of supported platinum catalysts, synthesized by deposition of nanosized colloids or by impregnation. The hydrogenation of cyclohexene serves as a model reaction to determine the catalytic activity of the catalysts.