Influence of the Leaf Extract of Mentha arvensis Linn. (Mint) on the Survival of Mice Exposed to Different Doses of Gamma Radiation

2002 ◽  
Vol 178 (2) ◽  
pp. 91-98 ◽  
Author(s):  
Ganesh Chandra Jagetia ◽  
Manjeshwar Shrinath Baliga
Keyword(s):  
Gamma Radiation ◽  
Leaf Extract ◽  
Mentha Arvensis ◽  
Different Doses

scholarly journals The effect of CO60 on the physical and physicochemical properties of rice

2012 ◽  
Vol 36 (2) ◽  
pp. 210-216 ◽  
Author(s):  
Ívina Catarina de Oliveira Guimarães ◽  
Joelma Pereira ◽  
Vanda Maria de Oliveira Cornélio ◽  
Luís Roberto Batista ◽  
Eric Batista Ferreira
Keyword(s):  
Chemical Composition ◽  
Gamma Radiation ◽  
Physicochemical Properties ◽  
Titratable Acidity ◽  
Production Chain ◽  
Caloric Value ◽  
Total Titratable Acidity ◽  
Radiation Conditions ◽  
Different Doses ◽  
Co60 Gamma

Owing to its chemical composition and production chain, rice is susceptible to contamination by fungi. Among other techniques, the application of gamma radiation has been suggested as a method to ensure food safety. However, such radiation can alter the chemical composition of the food. Thus, the objective of the present work is to evaluate the centesimal composition, caloric value, pH, total titratable acidity, and coloration of polished white rice subjected to different doses of Co60 gamma radiation (0 kGy, 6.5 kGy, and 7.5 kGy). The results demonstrated that while gamma radiation did not cause significant alterations in the centesimal composition, caloric value, and titratable acidity of the rice, increasing doses substantially decreased the pH and intensified the coloration. Under controlled radiation conditions, a 6.5-kGy dose can render rice safe for consumption without significantly compromising its physical and physicochemical properties.

scholarly journals Mentha arvensis LEAF EXTRACT EFFECT ON REDUCING NEUTROPHIL CHEMOTAXIS IN PULMONARY TISSUE OF Rattus norvegicus wistar

2021 ◽  
Vol 1 (9) ◽  
pp. 2-11
Author(s):  
Vitor Melo Rebelo ◽  
Ícaro Araújo de Sousa ◽  
João Santos Lima Almendra ◽  
Waldilleny Ribeiro de Araújo Moura ◽  
Esmeralda Maria Lustosa Barros ◽  
...  
Keyword(s):  
Rattus Norvegicus ◽  
Leaf Extract ◽  
Neutrophil Chemotaxis ◽  
Mentha Arvensis ◽  
Pulmonary Tissue

scholarly journals IV. Effect of 60Co gamma rays on survival rate of China aster plants (Callistephus chinensis Nees) in M1 generations - under field conditions

2013 ◽  
Vol 35 (2) ◽  
pp. 277-283
Author(s):  
A. Wosińska
Keyword(s):  
Survival Rate ◽  
Gamma Radiation ◽  
Gamma Rays ◽  
Lethal Effect ◽  
Field Conditions ◽  
Considerable Decrease ◽  
Planting Time ◽  
Variety Effect ◽  
China Aster ◽  
Different Doses

Studies were undertaken on the effect of different doses of gamma radiation on survival rate of plants (germinated from irradiated seeds) for 5 China aster varieties specified at florescence time. During their growth under field conditions (from planting time to blooming) lethal effect of the radiation occurred in plants of all varieties and its level depended on dose and variety. Effect of 3 kR and 6 kR doses differed depending on variety and was not always harmful, but following irradiation with doses exceeding 6 kR a considerable decrease in survival rate was observed. Radioresistance of studied varieties - measured both: by LD<sub>50</sub> and LD<sub>l00</sub> - differed; depending on variety, LD<sub>50 </sub>and LD<sub>l00</sub> values fluctuated: from 6 to 9 kR and 12 to 15 kR respectively.

scholarly journals Effect of Gamma Radiation on Characteristic of bipolar junction Transistors (BJTs )

2021 ◽  
pp. 1-9
Author(s):  
Abdenabi Ali Elamin ◽  
Waell H Alawad
Keyword(s):  
Gamma Radiation ◽  
Power Supplies ◽  
Strong Increase ◽  
Bipolar Junction Transistors ◽  
Bipolar Junction Transistor ◽  
Before And After ◽  
Junction Transistor ◽  
The Individual ◽  
Silicon Transistor ◽  
Different Doses

This paper describes the effects of 60Cogamma radiation hardness of characteristic and parameters of Bipolar Junction Transistors in order to analyze the performance changes of the individual devices used in nuclear field. Bipolar Junction Transistor (BJT) of the type (BC-301) (npn) silicon, Transistor was irradiated by gamma radiation using 60Cosource at different doses (1, 2, 3, 4, and 5) KGy. The characteristics and parameter of Bipolar Junction Transistor was studied before and after irradiated by using Transistor Characteristics Apparatus with regulated power supplies. Obtained result showed that, the saturation voltage VCE(sat) of Bipolar Junction Transistor decreased because of the gain degradation of the transistor and increased silicon resistivity, Another parameter of a bipolar junction transistor affected by ionizing radiation is a collector-base leakage current, a strong increase of the current is caused by the build-up charge near the junction.

scholarly journals Improvement of Wax Oil Content of Embryonic Callus of Jojoba Using Gamma Radiation

2019 ◽  
Vol 29 (2) ◽  
pp. 207-217
Author(s):  
Hattem M. El-Shabrawi ◽  
Hend E. Wahba ◽  
Ahmed M. Gabr ◽  
Shafik I. El-Morsy ◽  
Mohamed A. Saber ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Gamma Radiation ◽  
Embryogenic Callus ◽  
Oil Content ◽  
Leaf Explants ◽  
Simmondsia Chinensis ◽  
Oil Bodies ◽  
Embryonic Callus ◽  
Total Fatty Acids ◽  
Different Doses

Embryogenic callus was obtained from the leaf explants of jojoba (Simmondsia chinensis (Link) Schneider cultured on MS containing 0.5 mg/l NAA and 0.5 mg/l Kn. Growth of embryonic callus increased in 0.5 mg/l Kn + 6% sucrose. In order to improve oil content, the embryonic callus was exposed to different doses (5, 10 and 15 Kr) of gamma radiation. It was found that oil content of embryonic callus of jojoba increased 1.41% by exposing to 5 Kr gamma radiation. Also, size of oil bodies in embryonic callus irradiated with 5 Kr increased compared to control. Furthermore, production of the fatty acids was enhanced by gamma irradiation. The highest percentage of total fixed oil (1.41) was recorded in 5 Kr radiation. However, the highest content of total fatty acids (98.612) was obtained when embryonic callus were exposed to 10 Kr of gamma radiation.

Evaluation of the radioprotective effect ofAgeratum conyzoidesLinn. extract in mice exposed to different doses of gamma radiation

2003 ◽  
Vol 55 (8) ◽  
pp. 1151-1158 ◽  
Author(s):  
Ganesh Chandra Jagetia ◽  
Annie Shirwaikar ◽  
Shaival K. Rao ◽  
Prasad M. Bhilegaonkar
Keyword(s):  
Gamma Radiation ◽  
Radioprotective Effect ◽  
Different Doses

scholarly journals Исследование спектров фотолюминесценции нанокристаллов AgInS-=SUB=-2-=/SUB=-/ZnS при воздействии γ-излучения

2019 ◽  
Vol 45 (21) ◽  
pp. 34
Author(s):  
Д.С. Мазинг ◽  
Н.М. Романов ◽  
В.А. Мошников ◽  
О.А. Александрова ◽  
О.А. Корепанов
Keyword(s):  
Gamma Radiation ◽  
Colloidal Stability ◽  
Absorbed Dose ◽  
Zns Nanoparticles ◽  
137Cs Source ◽  
Γ Radiation ◽  
Biological Studies ◽  
Zns Nanocrystals ◽  
Different Doses

The effect of different doses of γ-radiation from a 137Cs source on photoluminescence of Ag-In-S nanocrystals covered with a shell of wider bandgap ZnS was investigated. The dynamics of changes in the nanocrystals photoluminescence depending on the dose of γ-radiation was shown. It was established that the AgInS2 / ZnS nanoparticles retain their photoluminescent properties and colloidal stability upon reaching the absorbed dose of 6 • 10^3 Gy (to water). Residual photoluminescence persisted when the absorbed dose reached 10^6 Gy. It was shown that AgInS2 / ZnS nanocrystals can be used in medical and biological studies in which increased resistance to gamma radiation is needed.

scholarly journals Quality parameters of tomatoes submitted to different doses of gamma radiation

2018 ◽  
Vol 21 (0) ◽  
Author(s):  
Ana Carolina Loro ◽  
Victor Wilson Botteon ◽  
Marta Helena Fillet Spoto
Keyword(s):  
Ascorbic Acid ◽  
Gamma Radiation ◽  
Titratable Acidity ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Maturation Stage ◽  
Long Life ◽  
Irradiation Process ◽  
Different Doses

Abstract Ionizing radiation can be used for different purposes in the food industry. In this study, the effect of irradiation doses (0, 0.5, 1.0 and 1.5 kGy) on the quality parameters of long life tomatoes (Lycopersicon esculentum Mill.), was evaluated during 4 storage periods (1, 7, 14 and 21 days). The different treatments were evaluated by analysing for colour, pH, total soluble solids (TSS), total titratable acidity (TTA), ratio (TSS/TTA), hardness, total lycopene and ascorbic acid contents, weight loss and maturation stage (O2 /CO2 ratio) for all the storage periods. The tomato samples were irradiated in a Co60 irradiator and maintained at 22 °C ± 1 °C. The quality of the tomato fruits was influenced by the gamma radiation basically by making the fruits softer and not degrading the ascorbic acid and lycopene contents at the doses evaluated. The irradiation process used in the doses evaluated was promising with respect to maintaining the quality parameters of long life tomatoes.

scholarly journals Germination and development of M1 seedlings of two Selliera radicans Cav. accessions subjected to gamma radiation

2021 ◽  
Vol 53 (2) ◽  
pp. 36-46
Author(s):  
Fabián Soto ◽  
Patricia Peñaloza ◽  
Eduardo Oyanedel ◽  
Flavia Schiappacasse ◽  
Oscar Durán ◽  
...  
Keyword(s):  
New Zealand ◽  
Gamma Radiation ◽  
Genetic Improvement ◽  
Specific Effect ◽  
Cotyledon Stage ◽  
Physical Agent ◽  
60Co Source ◽  
Higher Doses ◽  
Different Doses

Selliera radicans is a creeping plant native to Chile, New Zealand and Australia. It is increasingly used in the ornamental industry, and there is interest in breeding it to create commercial varieties. The aim of this study was to determine the effects of different doses of gamma radiation applied to the seeds on the germination and development of seedlings (M1) and the LD50 of two accessions of Selliera radicans for use in the induction of mutations. Seeds of the Vichuquén and La Serena accessions were exposed to 0, 100, 200, 300, 400, 500, 600 and 700 Gy from a 60Co source. Weekly germination percentages along with seedling numbers and lengths were recorded. Vichuquén seeds were more sensitive to this physical agent. The LD50 was 243.9 Gy for Vichuquén and 445.6 Gy for La Serena. Seedling lengths reached almost 4 mm for Vichuquén and 11.3 mm for La Serena at 12 weeks after sowing. Doses lower than 200 Gy are recommended since higher doses do not allow the development of seedlings to the extended cotyledon stage. Highlights: This is the first radiosensitivity study for the Goodeniaceae family and therefore for the Selliera genus. This study shows the specific effect of gamma radiation at the level of germination and seedling formation according to accession of origin. This study could be used for the genetic improvement of Selliera radicans via the induction of mutations.

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