This study explores how non-executive directors address governance challenges on Dutch two-tier boards, where management and supervisory roles are formally separated. Using semi-structured interviews and a questionnaire among non-executive directors, it examines three challenges: asking management critical …

In the field of ‘renewable energy resources’ formation of biogas is an important option. Biogas can be produced from biomass in a multistep process called anaerobic digestion (AD) and is usually performed in large digesters. Anaerobic digestion of biomass is mediated by various groups of microorganisms, …