Cell damaging by irradiating non-thermal plasma to the water: Mathematical modeling of chemical processes.

Recently non-thermal plasma (NTP) is applied for many therapeutic applications. By NTP irradiating to the tissues or cell-lines, the water molecules (HO) would be also activated leading to generate hydrogen peroxide (HO). By irradiating plasma to bio-solution, its main output including vacuum UV to UV causes the photolysis of HO leading to generate hydroxyl (OH) molecules in couple forms with ability to convert to HO.

Radiological image enhancement by X-ray choppers.

A new scatter control technology consisting a pair of X-ray choppers is being developed to provide improved radiographic contrast and measure geometrical distribution of scattered photons. By placing the choppers (which are rotating by different angular velocities) in two sides of the static object in direction of X-rays, the beam is position-encoded by two frequencies f1 and f2 due to the chopping velocities. The chopped beams reaching to image detectors generate a dynamic image consisting blinking pixels, while some non-chopped beams provide constant gray level of pixels.