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As part of a UK Technology Strategy Board supported project on the Advanced Surface Protection to Enable Carbon abatement Technologies (ASPECT) the use of aluminium diffusion coatings has been assessed.
Acetylene has many spectral lines in the 1.55 micron spectral region, and as such has been widely used as a frequency standard for the optical telecommunications C-band.
Alanine dosimeters irradiated in industrial electron beams require correction for the near adiabatic rise in temperature during irradiation.
Developments in the bio-medical sciences over recent years have involved increased use of high dose gamma irradiation of samples at cryogenic temperatures.
IAEA TRS-398, ICRU Report 78 and earlier recommendations assume that ion chamber perturbation factors in proton beams are unity for all ionisation chamber types.
The aim of this work is to improve photon dosimetry in composite fields, such as those involved in the delivery of IMRT.
Radiotherapy is one of the most effective treatments for cancer. The success of radiotherapy in curing cancer depends critically on accurate targeting and delivery of the correct radiation dose.
The aim of this work is to improve photon dosimetry in composite fields such as are used in delivering IMRT.
Proton beams exhibit better dose characteristics than x-rays for radiotherapy.
NPL as a National Measurements Institute has the role of maintaining and disseminating the UK’s primary standards in various fields to the user communities. Being somewhat removed from the end user may on occasion lead to something of a detachment to the consequences if/when that dosimetry chain fails.
IMRT (Intensity Modulated Radiation Therapy) is an advanced form of radiotherapy in which dose is targeted on the tumour volume by the use of multiple beams of radiation from a number of directions.
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Light microscopes have a resolution limit of around 250 nanometres (nm), which means anything smaller will appear blurred.
Photoelectrochemical activity screening of dyes on TiO2 surfaces is becoming increasingly relevant as industry tries to expand commercialisation of dye-sensitized solar cells (DSSCs).
Joint winners of the NPL Science Poster Fair 2012
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