Synthesis of insect antifeedants

Imperial Users onl

Group B/D translocation chromosome in a case with stigmata of the D trisomy

No Abstract

Electrical microfluidic pressure gauge for elastomer microelectromechanical systems

We report on an electrical microfluidic pressure gauge. A polydimethylsiloxane microvalve closes at a characteristic applied pressure determined by the material's properties and the valve's dimensions. Hence, when the same pressure is applied to all valves of a heterogeneous valve array, some valves close while others remain open. The state of the array is combined with knowledge of the respective characteristic closing pressures of the individual valves to yield an estimate of the applied pressure. The state of each valve is obtained by electrical measurements, since the electrical resistance of the respective underlying fluid-filled channel increases by at least two orders of magnitude as the valve closes and its insulating elastomer material interrupts the electrical circuit. The overall system functions as a pressure gauge with electrical readout. This device would be a critical component in active pressure-regulation loops in future integrated microfluidic systems

Experimentally validated quantitative linear model for the device physics of elastomeric microfluidic valves

A systematic experimental study and theoretical modeling of the device physics of polydimethylsiloxane “pushdown” microfluidic valves are presented. The phase space is charted by 1587 dimension combinations and encompasses 45–295 µm lateral dimensions, 16–39 µm membrane thickness, and 1–28 psi closing pressure. Three linear models are developed and tested against the empirical data, and then combined into a fourth-power-polynomial superposition. The experimentally validated final model offers a useful quantitative prediction for a valve's properties as a function of its dimensions. Typical valves (80–150 µm width) are shown to behave like thin springs

Sex chromosome abnornalities in a population of 1,662 mental defectives

No Abstract

Long-Term Impact Analysis of E-ARK Dissemination

This report contains details of the metrics of the E-ARK Project’s Dissemination Activities during its 3-year life. It also gives details of the findings of an Impact Survey undertaken at the end of the project to assess the consequences for individuals and organisations of the dissemination activities of the project. The report demonstrates that all performance targets set by the project for itself been achieved and exceeded. Feedback gathered shows that the E-ARK conference, organised in December 2016, was well received by delegates originating from a wide range of geographical locations and types of organisation. It also shows that respondents to our survey consider that the project has had a positive effect on both them personally and also on the organisations they represent. Personal knowledge of the topic of Digital Archiving has been increased and awareness raised of the issues and challenges which organisations must now confront. Organisations have similarly had their corporate awareness raised, with E-ARK resources being used to assist in this process, and this has led to increased commitment of resources to Digital Archiving activities. Finally, the survey has shown that E-ARK has succeeded in raising general awareness of the European Commission’s commitment to research work in this area

General pilot model and use case definition

This report describes the concepts and elements of the General Model of E-ARK pilot site activities