نتایج جستجو برای: gamma irradiation

تعداد نتایج: 181721  

     Mutations induced by gamma irradiation are part of improving some important agronomic traits in crops.  Identifying the optimal mutagenic dose is considered to be the most crucial step in trials and generating mutated genetic materials. The goal of this study was to evaluate the effect of different doses of gamma ray (0, 150, 200, 250 and 300 Gy) on some plant early stages traits and bioch...

Hyssopus of­ficinalis L. is one of the most important medicinal plants. Medicinal herbs are contaminated by microorganisms. Conventional methods for reducing of microbial loads such as ethylene oxide, propylene oxide and also use of steam are hazardous and instead, non-thermal process such as microwave and gamma radiation are being used widely in order to eliminate the microbial contaminations ...

Journal: :iranian journal of science and technology (sciences) 2008
a. akhavan

in order to improve the performance of a newly developed radiochromic film, gic-79, somedosimetric characteristics of this film have been studied based on relevant standard practice. the presentstudy describes some parameters that may affect the dosimeter response before, during, and after irradiation. the effect of absorbed dose rate on dosimeter response was determined by irradiating dosimete...

اسماعیلی فر, افشین, حسن پور, مریم, رامئه, ولی اله, صمدی گرجی, مهتاب, میرآبادی, علی زمان,

In order to evaluate of the effects of induced mutation doses of gamma irradiation 500, 700 and 900 Gry, the M2 generation of two rapeseed varieties including RGS003 and PF, were studied along with control treatments in a randomized complete block design with three replications. Selected lines of third-generation of mutation (M3) were evaluated for plant height (cm), number of pods per plant an...

Amiri Fahliani, R., kavoosi, B., Masoumi Asl, A., Razmi, H.,

Genetic diversity in strawberry is low due to its asexual propagation. One method of increasing genetic diversity, as an important tool in plant breeding, is the use of gamma rays to induce mutation. In order to determine the appropriate dosage of gamma irradiation for genetic diversity creation by mutation in strawberry, Kurdistan cultivar, and to study the influence of various doses of gamma ...

ژورنال: سنجش و ایمنی پرتو 2020

MgSO4:Cu phosphor was synthesized by solid state method. Optimum concentration of copper was determined at 0.1 mol%. Thermoluminescence characteristics of MgSO4:Cu was studied following gamma irradiation. A linear dose response was observed in dose range of 1Gy to 500Gy. Reusability of this sample was tested after 10 cycles of gamma irradiation and it revealed that the intensity remains approxi...

آقا محمدی, اصغر, دیوسالار, کوروس, رامیار, اصغر, صفری, زهرا, عظیمی, سیروس, محمودی, مجید,

Background: Acute lymphoblastic leukemia (ALL) is the most common malignancy in childhood, characterized by excess lymphoblasts, and immature white blood cells that are continuously multiplying and overproducing in the bone marrow. The aim of this investigation was to measure the sensitivity of lymphocytes against gamma irradiation in patients with acute lymphoblastic leukemia, and also find ou...

A. Hassanzadeh Hassanzadeh H.G. Mohammadi R Khodabakhsh

The variation of thermal and structural properties of 2-{[4-(2-hydroxybenzylideneamino) phenylimino]methyl}phenol (PAM)Schiff base were studied using differential scanning calorimetry (DSC) and powder X-ray diffraction techniques before and after fast neutron (1.050 and 1.740kGy), beta (11.01Gy) and gamma (453.0Gy) irradiations. Under fast neutron irradiation, the melting and decomposition enth...

Journal: :iranian journal of microbiology 0
hamidreza alighourchi department of food science and technology, faculty of agriculture, tarbiat modares university, tehran, iran. mohsen barzegar department of food science and technology, faculty of agriculture, tarbiat modares university, tehran, iran. mohammad ali sahari department of food science and technology, faculty of agriculture, tarbiat modares university, tehran, iran. soleiman abbasi department of food science and technology, faculty of agriculture, tarbiat modares university, tehran, iran.

pomegranate fruit is a rich source of bioactive compounds. the serious concern over unprocessed fruit juices is microbial contamination, which effectively inactivated by thermal processing, but it significantly affects juice functional compounds. therefore, the effect of gamma irradiation and ultrasonic on inoculated microbial to pomegranate juices was studied.two pomegranate cultivars were pur...

Journal: :iranian journal of science and technology (sciences) 2007
f. motamedi sedeh1

foot and mouth disease (fmd) is the most contagious disease of cloven-hoofed animals, causingsignificant economical losses in livestock animals. in this study fmd virus type a87/irn was cultured andmultiplied on bhk21 cells. the fmd virus was titrated by the tissue culture infection dose50 method(tcid50 /ml), the virus titration was 107.5.. the fmd virus samples were irradiated and inactivated ...

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