In a process for the preparation of alcohols by catalytic hydrogenation of carbonyl compounds, the catalyst used is 0. A particular angular response can be achieved by combining the attenuating affects of the blocking element with the increased response affects of the curved reflector. In every molding cycle, a maximum detected load Lra during the retraction of the ejector is determined. The adapter can further include a coupling mechanism situated between the conducting member and the connector portion, to provide a substantially uniform contact between the conductive nanostructure-based material in the conducting member and the connector portion.