PROGRESS IN RADIATION MEASURMENTS

Harmonic Measurments on Ships and Cold-ironing

Electrical power distribution on ships is similar to land based systems. Harmonic distortion is prevalent in both systems and equally detrimental in the modern era. It is important to understand and investigate the effect of harmonics on a ship’s Power Distribution System, when at sea, especially if the ship uses modern electronic variable speed drive (VSD) technology to control its electrical ...

Modelling long-term transpiration measurments from grassland in southern England

Observations of latent heat, sensible heat and momentum flux from eddy correlation equipment are presented, along with approximately weekly measurements of soil moisture content. The measurements were made over a pasture field in the south of England for 3 years, covering two dry years, 1995 and 1996 and a more normal year, 1997. The data show that, overall, approximately 80% of the measured ne...

Research Progress in Reversed Cherenkov Radiation in Double-negative Metamaterials

We review the research progress in reversed Cherenkov radiation in double-negative metamaterials (DNMs) starting from the first experimental verification of the DNMs reported in 2001, including theories, numerical computation and simulation and experiments. We also discuss the potential applications to particle detectors and highpower microwave or millimeter-wave devices, including the oscillat...

Technological Progress in Radiation Therapy for Brain Tumors

To achieve a good therapeutic ratio the radiation dose to the tumor should be as high as possible with the lowest possible dose to the surrounding normal tissue. This is especially the case for brain tumors. Technological advancements in diagnostic imaging, dose calculations, and radiation delivery systems, combined with a better understanding of the pathophysiology of brain tumors have led to ...

Radiation damping in modern NMR experiments: progress and challenges.