When an electron moves in a bending magnet it emits synchrotron radiation and generates a wakefield that effects other electrons in the beam. This wake is usually called a Coherent Synchrotron Radiation (CSR) wake and for a steady state case it has been computed in Refs. [2, 3]. In practice, bending magnets are often not long enough to assume that the wake is in the steady state. In the case wh...

Background: Tumor radioresistance leads to a reduction in the efficiency of radiation therapy. It is very important to explore the cellular mechanisms leading to radioresistance and to find potential therapeutic targets, which might improve the efficacy of radiation therapy. This study was to investigate the role of ataxia-telangiectasia mutated (ATM) and murine double minute X (MDMX) in radior...

Time-dependent aftereffect induced by γ-radiation in dry pea seeds at non-lethal 0.19–10 Gy doses is considered. By using phosphorescence at room temperature (RTP), seed lot was fractionated to strong and weak seeds producing normal and abnormal seedlings, respectively, and to dead seeds. After 0.19 Gy γ-radiation, strong seeds transformed to weak seeds during two months, whereas seeds after 7–...

The paper presents data on the effect of γ-radiation polymer composites based polyimide track membranes filled with nanodispersed lead. radiation-protective properties were studied by theoretical and experimental methods. To carry out studies composite, radioactive sources cesium-137 cobalt- 60 used. calculated linear attenuation coefficient in depending initial energy γ-quanta range from 0.5 t...

IVG.1M is a research pressurized water reactor designed to use high-enriched fuel. As part of the core conversion program, will be switched new low-enriched composite uranium Further operation determined by availability fresh fuel replace after next campaign and possibility ensuring safe storage irradiated spent nuclear (SNF) unloaded from core. The SNF conditions are assessed in terms radiatio...

BACKGROUND Secoisolariciresinol diglucoside (SDG), the main lignan in whole grain flaxseed, is a potent antioxidant and free radical scavenger with known radioprotective properties. However, the exact mechanism of SDG radioprotection is not well understood. The current study identified a novel mechanism of DNA radioprotection by SDG in physiological solutions by scavenging active chlorine speci...

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 int...

The aim of this study was to investigate the potential radioprotective effect of kombucha musroom tea (KM – tea) on gamma radiation (γ) – induced chromosomal aberrations (CAs) in human peripheral blood lymphocytes in vitro. For this purpose, we used in vitro dose-effect relationship, and correlated these data with statistical parameters. CAs were classified into six major types as break, dicent...

Many models for the pulsar radio and γ-ray emissions have been developed. The tests for these models using observational data are very important. Tests for the pulsar radio emission models using frequencyaltitude relation are presented in this paper. In the radio band, the mean pulse profiles evolve with observing frequencies. There are various styles of pulsar profile frequency evolutions (whi...

Coherent bremsstrahlung (CBS) is a specified type of radiation at colliders with short bunches. In the present paper we calculate the main characteristics of CBS for the BEPC collider. At this collider dN γ ∼ 3 · 10 8 dE γ /E γ photons of CBS will be emitted for a single collision of the beams in the energy range E γ < ∼ 240 eV. It seems that CBS can be a potential tool for optimizing collision...