CASPA-ADM: a mission concept for observing thermospheric mass density

Cold Atom technology has undergone rapid development in recent years and has been demonstrated in space in the form of cold atom scientific experiments and technology demonstrators, but has so far not been used as the fundamental sensor technology in a science mission. The European Space Agency therefore funded a 7-month project to define the...

Analysing the socio-economic impacts of COVID-19: a new regional geography or pandemic enhanced inequalities?

In the UK the socio-economic impacts of the COVID-19 mitigations over the course of the pandemic (March 2020 to the time of writing in January 2022) have been experienced unevenly and with differential intensities at both the regional and local scales. Using individual-level geocoded data (from the Understanding Society: UK Household...

Applying torque to the Escherichia coli flagellar motor using magnetic tweezers

The bacterial flagellar motor of Escherichia coli is a nanoscale rotary engine essential for bacterial propulsion. Studies on the power output of single motors rely on the measurement of motor torque and rotation under external load. Here, we investigate the use of magnetic tweezers, which in principle allow the application and active control...

Strand separation establishes a sustained lock at the Tus-Ter replication fork barrier

The bidirectional replication of a circular chromosome by many bacteria necessitates proper termination to avoid the head-on collision of the opposing replisomes. In Escherichia coli, replisome progression beyond the termination site is prevented by Tus proteins bound to asymmetric Ter sites. Structural evidence indicates that strand...

On the continuum modelling of segregation of granular mixtures during Hopper emptying in core flow mode

Many industrial processes involve particulates with materials ranging from pharmaceuticals, ceramics, cosmetics and foods. Common to all these particulate processes is the discharge of granular material from bins/hoppers in either mass flow mode (i.e. all material regions in the domain are in motion) or core flow mode (i.e. there is a flowing...

A Quantitative Risk Assessment Model for Oil Tankers

The method in their madness; Understanding how designers think

Methodology for bridge simulator skills assessment

Research in design Thinking

Proceedings of a Workshop meeting held at the Faculty of Industrial Design Engineering, Delft University of Technology, The Netherlands, May 29-31, 1991.

An experimental study of the dynamics of catenary mooring lines

Wave transmission by overtopping

This report presents a theory for ocean wave transmission past breakwaters by overtopping, based on an evaluation of the energy content of the overtopping water. While several coefficients are subject to further investigation, the data shows that the general form of the equations developed is correct. Comparison with large-scale model tests...