Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Ionizing radiation barrier

Tmovec, T., Z. Kallay, and S. Bezek. 1990. Effects of ionizing radiation on the blood brain barrier permeability to pharmacologically active substances. Inter. Jour. Radiation Oncol. Biol. Physics 19 1581-1587. [Pg.1751]

On the whole, calculation results show that concrete has efficient protective properties compared to the considered sources of ionizing radiation. These properties allow us to recommend the thickness of the protective barrier of the built-in structure to be 1 m with the concrete density 2.2 g/cm. ... [Pg.287]

Extensive research on the attempts to overcome the bilayer membrane barrier has resulted in the emergence of several different methodologies for partial and temporary cell membrane permeabilization. The prominent among them are chemical permea-bilizers, liposomal interactions, ultrasonication, ionizing radiation, and electroporation. [Pg.745]

Purpose 2 serves a worker protection function by providing barriers to potentially lethal doses of ionizing radiation from radioactive material operations conducted within the facility. [Pg.202]

Shielding Use proper barriers to block or reduce the penetration of ionizing radiation. [Pg.340]

Irradiation sterilization—The use of ionizing radiation for the treatment of infectious waste. Isolation zone—An area adjacent to a physical barrier, clear of all objects that could conceal or shield an individual. [Pg.491]

Li YQ, Chen P, Haimovitz-Friedman A et al. (2003) Endothelial apoptosis initiates acute blood-brain barrier disruption after ionizing radiation. Cancer Res 63 5950-5956... [Pg.238]

Inorganic lead compounds were used in paints and organic compoimds in fuel to increase octane number, until concerns about lead s toxic properties arose. Lead is relatively opaque to ionizing radiation and is a valuable shielding material in X-ray applications and nuclear facilities. Another market for lead is in alloys that are used as solders in applications ranging from circuit boards to heat exchangers. Lead is also used in acoustic barrier panel, glassware and ceramic, and fiber optic cables. [Pg.531]

Apart from the fluoro monomers vinyl fluoride (VF), vinylidene fluoride (VF2), and tetrafluoroethylene (TFE), only chlorofluoroethylene has found commercial use as homopolymer. It is applied as thermoplastic resin based on its vapor-barrier properties, superior thermal stability (Tdec > 350 °C), and resistance to strong oxidizing agents [601]. Chlorofluoroethylene is homo- and copolymerized by free-radical-initiated polymerization in bulk [602], suspension, or aqueous emulsion using organic and water-soluble initiators [603,604] or ionizing radiation [605], and in solution [606]. For bulk polymerization, trichloroacetyl peroxide [607] and other fluorochloro peroxides [608,609] have been used as initiators. Redox initiator systems are described for the aqueous suspension polymerization [603,604]. The emulsion polymerization needs fluorocarbon and chlorofluorocarbon emulsifiers [610]. [Pg.218]

The basic principle of the VK-300 safety design is consistent implementation of the defence-in-depth concept based on a system of physical barriers to ionizing radiation and radioactive substance propagation to the environment. The system of barriers incorporates ... [Pg.295]

See other pages where Ionizing radiation barrier is mentioned: [Pg.409]    [Pg.57]    [Pg.123]    [Pg.361]    [Pg.252]    [Pg.360]    [Pg.366]    [Pg.49]    [Pg.815]    [Pg.48]    [Pg.390]    [Pg.409]    [Pg.441]    [Pg.722]    [Pg.745]    [Pg.38]    [Pg.358]    [Pg.249]    [Pg.130]    [Pg.12]    [Pg.1]    [Pg.409]    [Pg.15]    [Pg.711]    [Pg.1175]    [Pg.374]    [Pg.79]    [Pg.38]    [Pg.110]    [Pg.578]    [Pg.189]    [Pg.274]    [Pg.320]    [Pg.737]    [Pg.88]    [Pg.21]    [Pg.21]    [Pg.83]   
See also in sourсe #XX -- [ Pg.312 ]



SEARCH



Ionizing radiation

© 2024 chempedia.info