The interaction of radiation with cells and tissues has a random nature. Therefore, understanding the random nature of cell killing that is determined by Poisson distribution statistics is an essential point in education of radiation biology. RadBioStat is a newly developed educational MATLAB-based software designed for computer-assisted learning of the target theory in radiation biology. Altho...

Levamisole in combination with radiation and chemotherapeutic agents is being studied in clinical trials. The mechanism of interaction of levamisole with these modalities is unknown. In order to determine if there is direct interaction between radiation and levamisole, a series of colony-formation assays was performed with the use of two human tumor cell lines. Cells were exposed to 0-10 Gy of ...

AIM This study investigated the potential of a series of biomarkers in predicting the interaction of gefitinib and radiation in tumour treatment. MATERIALS AND METHODS In vitro assays were performed on human skin cancer and melanoma cell lines. The antitumour effect was measured by using the MTT assay. Total and phosphorylated epidermal growth factor receptor (EGFR and pEGFR) levels were dete...

We derive expressions for the spectral emissivity and absorptivity of acoustic radiation by low Mach number (M ~ 1) turbulent fluids. The emissivity and absorptivity depend on the manner in which the turbulence is excited. We consider three types of turbulence. The first is free turbulence, that is, turbulence which is not subject to external forces. The second and third examples are special ca...

The basic physical mechanisms by which different kinds of ionizing radiation interact with matter are described. Understanding of these processes, coupled with detailed knowledge of atomic structure, provides much of the foundation for the theory and practice of radiological health protection today.

In using hyperthermia in the clinic, thermal dosimetry is essen tial and is discussed in terms of equating time-temperature relationships for an isoeffect to an equivalent time at a reference temperature, 43° for example. In applying time-temperatureequivalence, the sequence between heat and radiation and be tween two heat treatments, radiation dose rate, linear energy transfer, and physiologi...

Introduction Conclusions References

The subject of integrable nonlinear lattices is an important branch of the inverse scattering transform (IST) method. ' Many infinite families of these integrable systems can be derived and classified by means of discrete versions of the Lax-pair technique, ' and some of their members are interesting models for vastly different physical situations. As in the continuous context, two types of (no...