Changes in Growth, Morphology, and Physiology of Tetrahymena pyriformis Exposed to Continuous Cesium-137 and Cobalt-60 Gamma-Radiation

2022 ◽  
Vol 79 (2) ◽  
Author(s):  
Soukaina Ziyadi ◽  
Abdelghani Iddar ◽  
Mostafa Kabine ◽  
Mohammed El Mzibri ◽  
Adnane Moutaouakkil
Keyword(s):  
Gamma Radiation ◽  
Tetrahymena Pyriformis ◽  
Growth Morphology ◽  
Cesium 137

scholarly journals Identification of Fungi Resistant to 137Cs Gamma Radiation From an Artwork by Candido Portinari

2021 ◽  
Author(s):  
Renata Cardoso ◽  
Fernanda Correa ◽  
Ana Chaves ◽  
Marcia Lutterbach ◽  
Ana Ferreira ◽  
...  
Keyword(s):  
Dna Damage ◽  
Gamma Radiation ◽  
High Efficiency ◽  
Art Collections ◽  
Dna Damage And Repair ◽  
Strand Breaks ◽  
Identification Of Fungi ◽  
Cesium 137 ◽  
Favorable Conditions ◽  
Ionizing Radiation Resistance

Abstract Gamma radiation is a safe and effective technique for the treatment of art collections being used with high efficiency in reducing microbial loads being obtained by the emission of a radioactive isotope, such as Cesium 137. Portinari's work, from the collection of the National Museum (Brazil), was analyzed and the fungi contained therein were collected, isolated, and further treated with gamma radiation for decontamination. Radiation doses used were 16, 19 and 22 kGy. Results indicated 11 genera and 17 species isolated. Penicillium and Cladosporium were isolated in air, artwork and its support - emphasizing the predominance they assume in the contamination of works of art under favorable conditions, such as museums. The genera Penicillium, Cladosporium, Nigrospora and Curvularia showed high resistances (16 kGy). The most resistant was Cladosporium, which showed no growth under 22 kGy. As there are some differences in ionizing radiation resistance among fungi from the same order or species, the results here outlined indicates that the rates of DNA damage and repair were critical, depending on chronic or acute dose irradiated. The biochemical mechanism acting on fungal cells under irradiation was basically the inactivation of specific enzymes and, probably, DNA damage, particularly stimulating double-strand breaks.

Cesium 137 and its Gamma Radiation in Teleradiotherapy

1961 ◽  
Vol Original Series, Volume 55 (5) ◽  
pp. 385-395
Author(s):  
R. Thoraeus
Keyword(s):  
Gamma Radiation ◽  
Cesium 137

Mutant Quantity and Quality in Mammalian Cells (A L ) Exposed to Cesium-137 Gamma Radiation: Effect of Caffeine

1995 ◽  
Vol 142 (3) ◽  
pp. 247 ◽  
Author(s):  
Susan M. McGuinness ◽  
Mark L. Shibuya ◽  
Akiko M. Ueno ◽  
Diane B. Vannais ◽  
Charles A. Waldren
Keyword(s):  
Gamma Radiation ◽  
Mammalian Cells ◽  
Radiation Effect ◽  
Cesium 137

scholarly journals Cesium 137 and its Gamma Radiation in Teleradiotherapy

1961 ◽  
Vol 55 (5) ◽  
pp. 385-395 ◽  
Author(s):  
R. Thoraeus
Keyword(s):  
Gamma Radiation ◽  
Cesium 137

PbWO4 nanofibers for shielding gamma radiation: crystal growth, morphology and performance evaluation

CrystEngComm ◽  
2018 ◽  
Vol 20 (40) ◽  
pp. 6197-6206 ◽  
Author(s):  
Yun-Chuan Xu ◽  
Quan-Ping Zhang ◽  
Jun-Hua Liu ◽  
You Wu ◽  
Li-Ping Liu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Performance Evaluation ◽  
Crystal Growth ◽  
Gamma Radiation ◽  
Mechanical Loading ◽  
Radiation Shielding ◽  
Growth Morphology ◽  
Anisotropic Structures ◽  
And Performance

Assembling anisotropic structures with versatility such as good thermal conductivity and mechanical loading for radiation shielding has recently attracted widespread attention.

scholarly journals Testing for presence of radioactivity in food products imported from Japan to Canada

2015 ◽  
Author(s):  
Kazuhiro Takeuchi ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Bobby Sidhu ◽  
Abderrachid Zitouni
Keyword(s):  
British Columbia ◽  
Gamma Radiation ◽  
General Public ◽  
Food Products ◽  
Food Samples ◽  
Radiation Monitoring ◽  
Nuclear Accident ◽  
Gamma Spectrometer ◽  
Convenience Stores ◽  
Cesium 137

  Following the Fukushima Nuclear accident of March 11th of 2011, many people, particularly among the general public are still skeptical about the safety of foods imported from Japan. Furthermore, currently little radiation monitoring of food happens in Canada. The present study aims to test for the presence or absence of gamma radioactivity in various food products imported to Canada from Japan. Thirty commonly imported Japanese and thirty-two additional Canadian food products were purchased from supermarkets and convenience stores in Vancouver, British Columbia. All samples were tested for gamma radiation from cesium-134 and cesium-137 using a portable gamma spectrometer, the EXPLORANIUM GR-135 Plus Identifier. All food samples tested in this experiment were found free of any detectable gamma radioactivity.  

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