PURPOSE Radiotherapy is currently one of the main treatment modalities for head and neck cancer; however, it also results in severe toxicity to the normal tissue, to the detriment of patients. This study aimed to investigate whether alpha lipoic acid (ALA) could protect against radiation-induced oral mucositis in a rat model. RESULTS On post-irradiation days 4 and 7, the epithelial layer on o...

Starting from a general equation for organism (or cell system) growth and attributing additional cell death rate (besides the natural rate) to therapy, we derive an equation for cell response to α radiation. Different from previous models that are based on statistical theory, the present model connects the consequence of radiation with the growth process of a biosystem and each variable or para...

This paper provides an extension for Hawking temperature of Reissner-Nordstr$\ddot{o}$m-de Sitter (RN-DS) black hole (BH) with global monopole as well $5$D charged hole. We consider the holes metric and investigate effects quantum gravity ($\alpha$) on radiation. boson particles tunneling through horizon by using Hamilton-Jacobi ansatz phenomenon. In our investigation, we study radiation to ana...

We design three different layouts of DFFs in a 28 nm thin-BOX FD-SOI process to compare their radiation hardness. We measure them by alpha-particle irradiation. Experimental results show that the soft-error probability of two-fingered inverters is 2.6x higher than that of one-fingered one at 0.4 V when DATA and CLK are 1 and 0 respectively. We also measure the relationship between process varia...

High resolution x-ray lithographic studies of cells from chick embryo hearts dried by the CO2 critical point method have been made with soft x-ray radiation of different wavelengths. A marked difference in the relief replica in polymethyl methacrylate (PMMA) resulting from the differential absorption by the dried cells of carbon K alpha radiation at 4.48 nm and broad band synchrotron radiation ...

Nuclear reactions involving alpha particles play an important role in various astrophysical processes such as the gamma-process of heavy element nucleosynthesis. The poorly known low-energy alpha-nucleus optical (AOMP) potential is a key parameter to estimate rates these reactions. AOMP can be tested by measuring cross section alpha-scattering well alpha-induced Low energy elastic on 144Sm has ...

This work is devoted to studying the alpha activity distribution of natural radionuclides in boarding schools located near zones tectonic faults. There are many faults Almaty and this basis for referring southern capital Kazakhstan radon-hazardous territories. As a result radiometric measurements 2D-topology alpha-radiation flux density from distance fault was found. Based on results coefficien...

Electret ion chambers are inexpensive, light-weight, commercially available, passive charge-integrating devices for accurate measurement of different radiations. Performance of electret ion chambers for surface alpha contamination measurement was evaluated. Ion chambers of two types and electrets of three thicknesses were used for the study. Calibration of the electret ion chambers was performe...

A successfull application of Geiger-mode multipixel avalanche diodes (GMAPDs) for pulse-shape discrimination in alpha-beta spectrometry using organic liquid scintillator is described in this paper. Efficient discrimination of alpha and beta components in the emission of radioactive isotopes is achieved for alpha energies above 0.3 MeV. The ultra-compact design of the scintillating detector help...