نتایج جستجو برای: gamma doses

تعداد نتایج: 225527  

TThis study investigated the water absorption of chitosan, collagen, and chitosan/collagen blend membranes exposed to gamma-ray irradiation. These membranes were produced via the solvent evaporation method. All membranes then underwent irradiation at 15 or 25 kGy gamma-ray doses, while membranes without irradiation were used as controls. After immersing the membranes in distilled water for up t...

Journal: :Radiation and environmental biophysics 1976
A G Underbrink A M Kellerer R E Mills A H Sparrow

Microdosimetric data indicate that the mean specific energy, eta, produced by individual charged particles from X-rays and gamma rays is different for the two radiation qualities by nearly a factor of two. In order to test whether this influences the initial, linear component in the dose-effect relations, a comparison was made between dose-response curves for pink somatic mutations in Tradescan...

Journal: :International immunology 1999
F Brombacher A Dorfmüller J Magram W J Dai G Köhler A Wunderlin K Palmer-Lehmann M K Gately G Alber

We have studied IL-12p35-deficient (IL-12p35(-/-)) mice to evaluate the role of IL-12 in resistance against Listeria monocytogenes. In the absence of bioactive IL-12p75, mutant mice acquired higher bacterial organ burden than wild-type mice and died during the first week following infection with normally sublethal doses of Listeria. Moreover, blood IFN-gamma levels were strikingly reduced in mu...

2007
Muhammad Amjad Muhammad Akbar Anjum

Seed of onion (Allium cepa L.) cv. Ailsa Craig were exposed to various doses of gamma radiation, i.e. 10,20.40.80. and 100 krad. Irradiation doses have no significant effect on seed viability, except the highest dose (100 krad) which resulted in reduced viabi lity. However, electrical conductivities of the leachates of seeds exposed to gamma radiation were higher than that of un irradiated seed...

Journal: :international journal of molecular and cellular medicine 0
najmeh assadi cellular and molecular biology research center (cmbrc), babol university of medical sciences , babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) ebrahim zabihi cellular and molecular biology research center (cmbrc), babol university of medical sciences , babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) meysam khosravifarsani cellular and molecular biology research center (cmbrc), babol university of medical sciences , babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) soraya khafri social medicine and health department, babol university of medical sciences, babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) haleh akhavan niaki cellular and molecular biology research center (cmbrc), babol university of medical sciences , babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) mehrangiz amiri department of nuclear medicine, paramedical faculty, babol university of medical sciences, babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences)

the adaptive response (ar) is a phenomenon by which cells exposure to sublethal doses of dna-damaging agents (non-mutagenic dose of chemical or radiation), known as conditioning treatment (ct), leads to increased resistance to a subsequent exposure to a higher dose of the same or other agents, known as challenge treatment (cr). the adaptive response (ar) induced by radiation in human lymphocyte...

Journal: :journal of paramedical sciences 0
masoumeh zangeneh department of radiology, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran. hossein mozdarani department of medical genetics, faculty of medical sciences, tarbiat modares university, tehran, iran. aziz mahmoudzadeh laboratory of cytogenetics, novin medical radiation institute, tehran, iran mahmoud reza aghamiri division of radiation medicine, shahid beheshti university, tehran, iran

the radioprotective effects of vitamin c and famotidine were investigated using the micronucleus test for anticlastogenic and cell proliferation activity. various doses of vitamin c and famotidine were administered intraperitoneally 2 h before 2gy gamma irradiation to nmri adult male mice. frequency of micronuclei in 1000 pces (mnpces) were scored for each sample. cell proliferation ratio (pce/...

Journal: :Biochimica et biophysica acta 1986
J E Freschi A Moran

We studied the dose-response relationship between gamma radiation and batrachotoxin-stimulated sodium influx in neuroblastoma cells in tissue culture. We also tested the hypothesis that changes in sodium channel conformation may alter the radiosensitivity of the channel. We found that gamma radiation inhibited toxin-stimulated 22Na uptake at doses beyond a threshold of 200-300 Gy. No effects we...

برزوئی, اعظم, مجدآبادی, عباس , کافی, محمد,

Abstract In order to study the effect of gamma irradiation on biochemical characteristics of two wheat genotypes, a greenhouse experiment was conducted in 2009 in Agricultural, Medical and Industrial Research Institute, Karaj, using factorial experiment based on complete randomized design with 3 replications. Two wheat genotypes (Roshan and T-65-58-8) were irradiated by 100, 200, 300 and 400 G...

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