⎯The electrical characteristics of solid state devices such as the bipolar junction transistor (BJT), metaloxide semiconductor field-effect transistor (MOSFET), and other active devices are altered by impinging photon radiation and temperature in the space environment. In this paper, the threshold voltage, the breakdown voltage, and the onresistance for two kinds of MOSFETs (200 V and 100 V of ...

BACKGROUND Mutagen-induced DNA damage as measured in peripheral blood lymphocytes (PBL) has been associated with increased risks of cancers. The formation of γ-H2AX is an early cellular response to DNA double-strand breaks (DSB). We hypothesize that higher level of radiation-induced γ-H2AX in PBLs may be associated with an increased risk of esophageal adenocarcinoma. METHODS Laser scanning cy...

The horizontal impact parameter profile of synchrotron radiation, for fixed vertical angle of the photon, is calculated. This profile is observed through an astigmatic optical system, horizontally focused on the electron trajectory and vertically focused at infinity. It is the product of the usual angular distribution of synchrotron radiation, which depends on the vertical angle ψ, and the prof...

While measuring the ratio RK = Γ(K± e2(γ))/Γ(K ± μ2(γ)), the KLOE Collaboration has studied the radiative process Ke2γ . The ratio of the width for the Ke2γ decay with a positively polarized photon from structure-dependent radiation to the inclusive Kμ2(γ) width is found to be 1.484(68)×10−5. The observed radiation spectrum agrees with predictions from chiral perturbation theory and is in contr...

We discuss the link between the nonthermal X-radiation and TeV γ-ray emission from SN 1006, and study the capabilities of both electronic and nucleonic models for explanation of the TeV flux observed from the northeast rim of SN 1006. We show that the interpretation of the TeV radiation by the inverse Compton scattering of electrons on 2.7 K cosmic microwave background radiation is possible, ho...

We study the asymptotic behaviour in terms of Γ-convergence of the following one dimensional energy

background and objectives: nasturtium officinale w.t.aiton (brassicaceae) is used as an edible vegetable in various parts of iran. the aim of the present study was to investigate the protective activity of the methanolic extract of nasturtium officinale against gamma-radiation-induced hepatotoxicity in terms of histopathological changes. methods: male c57 mice were divided into 10 groups. group...

Synchrotron radiation occurs when a charged particle, typically an electron, experiences an acceleration transverse to its velocity, as caused by a magnetic field. The following notes emphasize the case when the particle's velocity approaches the speed of light, the limit in which synchrotron radiation becomes prominent. 1 Total Rate The total (classical) radiation rate is obtained from the Lar...

There is a paucity of large animal models to study both the extent and the health risk of ionizing radiation exposure in humans. One promising candidate for such a model is the minipig. Here, we evaluate the minipig for its potential in γ-H2AX-based biodosimetry after exposure to ionizing radiation using both Cs137 and Co60 sources. γ-H2AX foci were enumerated in blood lymphocytes and normal fi...

A comparative investigation of the induction of double-strand DNA breaks (DSBs) in the Chinese hamster V79 cells by γ-radiation at dose rates of 1, 10 and 400 mGy/min (doses ranged from 0.36 to 4.32 Gy) was performed. The acute radiation exposure at a dose rate of 400 mGy/min resulted in the linear dose-dependent increase of the γ-H2AX foci formation. The dose-response curve for the acute expos...