نتایج جستجو برای: ionizing radiations
تعداد نتایج: 18300 فیلتر نتایج به سال:
where S is the survival ratio (number of plaque forming phage particles after exposure to a dose D of radiation) /(number of plaque-forming phage particles before exposure), and R is the radiosensitivity of the phage (for a recent discussion of this subject, see Pollard, 1954). The radiosensitivities of a number of bacteriophage species have been measured, and are presented here and compared wi...
Background and Objective: The cell division cycle 25 (CDC25)is a familyof highly conserved dual-specificity phosphatases that activate cyclin-dependent kinase complexes. These complexes are the main cell cycle regulators. Mammalian cells ,exposure to DNA damaging radiations such as ionizing radiation and ultraviolet light, prevent cell cycle progression by activation of checkpoint pathways an...
One year aged organic bilayer Al/PCTDA/CuPc/ITO structure prepared with ICB deposition method has been used to evaluate the influence of ionising radiation to electrical properties of the structure. Small sources of α, β and γ radiation were used for preliminary measurements. Capacitance and current measurements were performed on samples with and without presence of ionising radiation and resul...
introduction: ionizing radiations are the hazardous agents in the workplace and all forms of ionizing radiation produce some type of injuries. awareness of application of protection guidelines and knowledge of the principles of radiation protection can play an important role in health of employees. survey of radiation employee’s levels of awareness and practical behavior is essential and should...
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