On the origin of chaotrope-modulated electrocatalytic activity of cytochrome c at electrified aqueous|organic interfaces

Electrochemical, spectroscopic and computational methods are used to demonstrate that electrified aqueous|organic interfaces are a suitable bio-mimetic platform to study and contrast the accelerated electrocatalytic activity of cytochrome c towards the production of reactive oxygen species (ROS) in the presence of denaturing agents such as guanidinium chloride and ure

Monitoring and Modelling Geomagnetic Storms in Ireland

<p>Poster given at ESWW11 in Liege.</p> <p> </p> <p>November 2014</p

Psychotherapeutic interventions for burns patients and the potential use with Stevens-Johnson syndrome and toxic epidermal necrolysis patients: A systematic integrative review

Background The existing evidence demonstrates that survivors of SJS/TEN have reported long-lasting psychological effects of their condition. Burns patients experience similar psychological effects. It is important to look at ways to help allay the psychological complications of SJS/ TEN. As there is an absence of evidence on SJS/TEN psychotherapeutic interventions, it was judged to be beneficial to determine the evidence underpinning psychotherapeutic interventions used with burns patients.  Aims and objectives The aim of this systematic integrative review was to synthesize the evidence relating to psychotherapeutic interventions used with adult burns patients and patients with SJS/TEN.  Method The systematic review was guided by Whittemore and Knafl’s integrative review process and the PRISMA guidelines. Nine databases were searched for English and French language papers published January 2008 to January 2021. The protocol for the review was registered with PROSPERO.  Conclusion Following further research, some of the interventions deployed in burns patients may be applicable to SJS/TEN patients, particularly stress reduction techniques. In addition, the caring behaviours such as compassion, respect, and getting to know the patient as a person are important components to psychological care.  </p

Assembly Integration and Verification Activities for a 2U CubeSat EIRSAT-1

The Educational Irish Research Satellite, EIRSAT-1, is a project developed by students at University College Dublin that aims to design, build, and launch Ireland’s first satellite. EIRSAT-1 is a 2U CubeSat incorporating three novel payloads; GMOD, a gamma-ray detector, EMOD, a thermal coating management experiment, and WBC, a novel attitude control algorithm. The EIRSAT-1 project is carried out with the support of the Education Office of the European Space Agency, under the educational Fly your Satellite! programme.The Assembly, Integration and Verification (AIV) plan for EIRSAT-1 is central to the philosophy andthedevelopment of the spacecraft. The model philosophy employed for the project is known as the ‘prototype’ approach in which two models of the spacecraft are assembled; an Engineering Qualification Model (EQM) and a Flight Model (FM). The payloads, GMOD and EMOD, and the Antenna Deployment Module(ADM) platform element warranta Development Model (DM)in addition to an EQM and a FM, as they have been designed and developed in-house. The engineering qualification model serves asbotha FlatSat for electrical integration testing and as a representative model for testing of software code, patching and operational decisions during the active mission. The EQM is tested to qualification levels and durations during the environmental test campaign. The flight model contains the flight versions of the payloads, ADM platform element and the procured hardware elements. It undergoes acceptance level testing and it is the final spacecraft to be delivered to ESA for flight.After successful completion of the Critical Design Review (CDR) and Ambient Test Readiness Review (ATRR) phases of theproject, the EQM of EIRSAT-1 will beassembled and integrated in University College Dublin. After assembly and integration of the EQM, the project will beginthe ambient test campaign, in which the EQM undergoesambient functional and mission testing. This work details the preparation and execution of the assembly, integration, and verification activities of EIRSAT-1 EQM.</div

Design and development of a 1-axis attitude control testbed for functional testing of EIRSAT-1

The performance of the Attitude Determination and Control Subsystem (ADCS) of a CubeSat relies on consistent and robust inputs from sensors to provide the actuation to manoeuvre and stabilise the satellite orientation in space. This paper details the design and manufacture of a 1-axis motorised testbed to perform pre-flight ADCS functional testing of a nanosatellite based on the CubeSat Standard. This testbed has been developed to support the Educational Irish Research Satellite, EIRSAT-1, a 2U CubeSat being developed in University College Dublin (UCD) as part of the European Space Agency (ESA) Fly Your Satellite! (FYS!) Programme. EIRSAT-1 is a student led project to develop, build, test and launch Ireland's first satellite. The project is a collaborative effort of staff and students across a range of disciplines including physics, engineering and maths. The design of the testbed allows all axes of the CubeSat to be tested individually. The design can be adapted easily to accommodate individual subsystem boards, such as an ADCS motherboard, in addition to larger CubeSat sizes, thus making it applicable to other missions. This testbed will be used to fully assess the functionality of the EIRSAT-1 ADCS motherboard, its inertial measurement unit, sun sensors, and magnetorquer actuation, first testing the Engineering Qualification Model (EQM) and then the Flight Model (FM). The testbed allows for polarity and performance checks of the sensors by comparison with known good reference sensor values. A controllable motorised rotating testbed allows for automated testing of the gyroscope and magnetometer. The performance of the five magnetorquers required for actuation is evaluated by an external magnetometer for each actuator. An easily adjustable artificial sun source allows for characterisation of the fine and coarse sun sensors response to change in angle relative to source. The testbed allows the satellite sensor and actuator outputs to be compared pre and post test procedures including ambient, vibrational and environmental test campaigns, in order to confirm full functionality or clearly indicate any issue