background: ferula gummosa boiss. is a medicinal and economical plant belonging to apiaceae family. it is a native herb of iran and is in serious danger of extinction. objective: gamma irradiation is an environmental stress and can consider as a new tool to change the content of secondary metabolites in medicinal plants. the effect of gamma irradiation on phenolic content and radical scavenging...

... INTRODUCTION . EXPERIMENTAL First Irradiation .. Second Irradiation. CALCULATIONS ... First Irradiation. Second Irradiation. . CONCLUSIONS .•... ACKNOWLEDGEMENT . IS-184 CONTENTS 3

hdpe monofilaments were obtained using different extruders and drawn by post-extruder equipments. after solidification, drawn and undrawn monofilaments (draw ratio 7:1) were irradiated with 10 mev electron beams in air at room temperature at 25, 50, 75, 100 and 125 kgy dose ranges to induce a network structure. hdpe crosslinking was studied on the basis of gel content measurements. the fibers w...

objective: it has been suggested that the vascular endothelial growth factor (vegf) gene expression plays an important role in radiation-induced injury to the spinal cord. this study assesses the radioprotective effects of n-acetyl-5-methoxytryptamine (melatonin) through its modulation of vegf expression after localized irradiation of the cervical spinal cord. materials and methods: in this exp...

objective: ionizing radiation interacts with biological systems to induce excessive fluxes of free radicals that attack various cellular components. melatonin has been shown to be a direct free radical scavenger and indirect antioxidant via its stimulatory actions on the antioxidant system.the aim of this study was to evaluate the antioxidant role of melatonin against radiation-induced oxidativ...

background: after radiation therapy (rt), some health hazards including dna damages may occur where melatonin can play a protective role due to free radical generation. on the other hand, serious accidental overexposures may occur during rt due to nuclear accidents which necessitate the need for study on exposure to high-dose radiations during treatments. objective: the aim of this study was to...

objective: ocular morbidity is widely observed when radiotherapy includes the orbit. oxidative stress generated by irradiation is responsible for this complication. in different studies, it has been shown that melatonin has antioxidative properties and a radioprotective role. the aim of this study was to evaluate the antioxidant role of melatonin against radiation-induced oxidative injury in ra...

The objective of this study was to determine the effect of irradiation of pomegranate seed (PS) on chemical composition, digestibility and kinetic of gas production. Pomegranate seeds were exposed to gamma ray (GR) and electron beam (EB) at doses of 5, 10, 15 and 20 kGy. Three ruminally fistulated rams were used for obtaining ruminal fluid for in vitro digestibility and gas production measuremen...