In Europa is sprake van een algemene en alarmerende achteruitgang van bloembezoekende insecten zoals wilde bijen, zweefvliegen en vlinders. Deze insecten spelen een belangrijke rol bij de bestuiving van bloeiende planten. Deze bestuiving is zowel belangrijk voor de agrarische sector als de natuurbeheer. …

In the past ten years, music consumption has witnessed a dramatic shift from the predominant consumption of music via physical music carriers, toward a consumption pattern that excludes the employment of a music carrier. This form of consumption has been called Download to Own (DtO). In recent years, …

This thesis describes how the abundance of CO2 a ects the porosity of H2O:CO2 ice mixtures deposited at di erent growth temperatures ranging from 30 - 70 K. The mixing ratios of the used ice samples H2O:CO2 = 10:1, 4:1 and 2:1 are of astrophysical relevance. Laser optical interference is used to monitor …

The exploitation of the metagenome for novel biocatalysts by functional screening is determined by the ability to express the respective genes in a surrogate host. The probability of recovering a certain gene thereby depends on its abundance in the environmental DNA used for library construction, the …