Aim: Time factor in the treatment of advanced head and neck tumors undoubtedly affects local tumor control and overall survival of treated patients. The aim of this work was to analyse individual time periods of radiation therapy, emphasising the role of enteral nutrition via gastrostomy tube (GT). Methods: Patients with cancer of head and neck region are in 70-80% cases diagnosed in locally ad...

BACKGROUND Although two-dimensional (2-D) monolayer cell cultures provide important information on basic tumor biology and radiobiology, they are not representative of the complexity of three-dimensional (3-D) solid tumors. In particular, new models reproducing clinical conditions as closely as possible are needed for radiobiological studies to provide information that can be translated from be...

Thyroid cancer (TC) is the most common neoplasm of the endocrine system. In 2011, the standardized incidence rate in Poland was 7.4 for women and 1.7 for men [1]. This rate is characterized by a steady increase. However, it is not accompanied by an increase in mortality [2,3]. On the contrary, a significant reduction is observed due to diagnosing cancer at earlier stages and improved treatment ...

Six advanced reactor concepts have been selected for Generation-IV reactors and are being investigated worldwide to meet the challenging goals of effective resource utilization and waste minimization (sustainability), improved safety, enhanced proliferation resistance, and reduced system cost. [1] The six systems are very high temperature reactor (VHTR), sodium-cooled fast reactor (SFR), superc...

The global energy context pleads in favour of a sustainable development of nuclear energy since thedemand for energy will likely increase, whereas resources will tend to get scarcer and the prospect ofglobal warming will drive down the consumption of fossil fuel sources.How we deal with radioactive waste is crucial in this context. The production of nuclear energy inFrance h...

Nuclear power remains a contentious issue for many. Its proponents point towards it being a cost-competitive, feasible route for meeting our ever growing appetite for energy, with relatively low greenhouse gas emissions (Nature Mater. 7, 679; 2008). Those against a nuclear-led energy policy cite concerns over the devastating impact a nuclear incident can have, as well as the complex scientific ...

Although perhaps not as renowned as its actinide siblings plutonium and uranium, the fourth transuranic element — named in honour of Pierre and Marie Curie — has a story that is intertwined with that of the twentieth century. The first isotope of element 96, 242Cm, was prepared in 1944 by Seaborg, James, and Ghiorso through bombardment of 239Pu with helium nuclei. This finding was quickly follo...

The presented work is motivated by a French law regarding nuclear waste management. A new conceptual Accelerator Driven System (ADS) designed for the Minor Actinides (MA) transmutation has been assessed by numerical simulation. The MUltiple Spallation Target (MUST) ADS combines high thermal power (up to 1.4 GWth) and high specific power. A 30 mA and 1 GeV proton beam is divided into three secon...