Mass transfer and gas-liquid interface properties of single CO2 bubbles rising in tap water

To improve the mass transfer efficiency in many industrial applications better understanding of the mass transfer rate is required. High speed images of single CO2 bubbles rising in tap water were analysed to investigate the relationship between the mass transfer and properties of single bubbles. Transition to a lower mass transfer rate was shown to correspond with the transition from a mobile to an immobile bubble surface. This was indicated by the change in bubble rise velocity, bubble rise path and bubble shape. The presence of surfactants in untreated tap water appear to effect the transition point, particularly for bubbles with a smaller initial diameter and lower rise velocity

Microfluidics for Small-Angle X-ray Scattering

Small-angle X-ray scattering is a well-established biophysical technique, whilst micro-fluidics is proving to be a convenient technology for creating miniaturised multifunctional devices. Both fields are highly versatile and find use in multiple scientific disciplines. Together, they offer the potential to obtain structural information on biomacromolecules, nanoparticles and condensed matter, in a high-throughput manner and with enhanced time-resolution capabilities. This chapter provides practical design considerations for X-ray-based microfluidic systems and examines some of the existing microfluidic platforms used in conjunction with small-angle X-ray scattering. As the exclusive advantages of microfluidics become recognised and accessible, the prevalence of microfluidic sample environments in X-ray scattering measurements will hopefully increase

Equality, freedom and property rights A critique of the Libertarian case

SIGLEAvailable from British Library Document Supply Centre- DSC:D98174 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Dataset for Evaluation of microporous hollow fibre membranes for mass transfer of H2 into anaerobic digesters for biomethanisation

Dataset supports &#39;Evaluation of microporous hollow fibre membranes for mass transfer of H2 into anaerobic digesters for biomethanisation&#39; publsihed in the Journal of Chemical Technology and Biotechnology DOI: https://doi.org/10.1002/jctb.6081</span

The phylogenetic position of the ‘giant deer’ Megaloceros giganteus

The giant deer, or 'Irish elk', has featured extensively in debates on adaptation, sexual selection, and extinction. Its huge antlers - the largest of any deer species, living or extinct - formed a focus of much past work 1-4. Yet the phylogenetic position of the giant deer has remained an enigma. On the basis of its flattened antlers, the species was previously regarded as closely related to the living fallow deer5-7. Recent morphological studies8, however, have challenged that view and placed the giant deer closer to the liying red deer or wapiti. Here we present a new phylogenetic analysis encompassing morphological and DNA sequence evidence, and find that both sets of data independently support a sister-group relationship of giant and fallow deer. Our results include the successful extraction and sequencing of DNA from this extinct species, and highlight the value of a joint molecular and morphological approach