PROPAGATION OF MANGO SEEDLINGS OF THE CULTIVAR “TOMMY” BY GRAFTS IRRADIATED

2021 ◽  
Vol 9 (1A) ◽  
Author(s):  
Valter Arthur
Keyword(s):  
Ionizing Radiation ◽  
Gamma Radiation ◽  
Nuclear Energy ◽  
Lethal Dose ◽  
Tukey Test ◽  
Different Doses

Due to difficulties of vegetative propagating of any pants, many tests were performed with ionizing radiation aiming the modification of the characteristics of the plants for obtaining of the improved genotypes and of smaller size. Rootstock “Espada” cultivar, were used to obtain mango seedlings of “Tommy” cultivar. The cuttings were irradiated with different doses of gamma radiation: 0 (control), 2.5, 5.0, 7.5 and 10.0 Gy, in a source of Cobalt-60 type Gammacell-220, installed in the Center for Nuclear Energy in Agriculture, CENA-USP. After irradiation, was performed the grafting type cleft graft. Was made the first evaluation of height of the plants from the budding grafting after 24 months. Data were subjected by statistic program (SAS) and the means were compared by Tukey test (p <0.05). From the results obtained can be concluded that the doses of 2.5 Gy stimulated growth of the plants and the lethal dose was 10.0 Gy because don’t have development of plants.

RADIOSENSITIVITY OF SOFT WHEAT SEEDS TO GAMMA RADIATION

2021 ◽  
Vol 55 (2 (255)) ◽  
pp. 165-171
Author(s):  
Liya A. Minasbekyan ◽  
Inesa A. Avagyan
Keyword(s):  
Ionizing Radiation ◽  
Gamma Radiation ◽  
Gamma Irradiation ◽  
Mitotic Activity ◽  
Cell Nucleus ◽  
Growth And Development ◽  
Growth Parameters ◽  
Soft Wheat ◽  
Different Doses ◽  
Wheat Seeds

The study of the effect of different doses of $\gamma$-irradiation on the growth and development of seedlings of soft wheat seeds, resistance, and germination of seeds to irradiation has been carried out. The data show that the seeds of common wheat are resistant to ionizing radiation and up to 80% of the seeds remained viable. Under the influence of ionizing radiation, the functional and mitotic activity of the cell nucleus is disrupted, which has a significant effect on the growth parameters of the seedlings of irradiated seeds.

DISINFESTATION OF MANGOES HADEN IN-FESTED BY Anastrepha fraterculus (WIED., 1830) (DIPTERA, TEPHRITIDAE), WITH GAMMA RADIATION

2021 ◽  
Vol 9 (1A) ◽  
Author(s):  
Valter Arthur
Keyword(s):  
Relative Humidity ◽  
Radiation Dose ◽  
Gamma Radiation ◽  
Adult Stage ◽  
Mangifera Indica ◽  
Lethal Dose ◽  
Adult Emergence ◽  
Climate Chamber ◽  
Anastrepha Fraterculus

The objective of experiment was determinate the radiation dose for disinfestation to mango Mangifera indica cv. Haden, infested by Anastrepha fraterculus larvae. For realization of the experiment, were collected fruits in the field, which were taking to Entomology laboratory where there was a infestation by the flies in cages during 72 hours period. Waited for the development of the larvae and before 5 – 8 days to infestation, the mangos were irradiated in a Cobalt-60 source with doses of: 0(control), 50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1.100, 1.200 and 1.300 Gy. After the irradiation, the fruits were placed in climate chamber with 25 ±5°C of temperature and 70±5% of relative humidity, posteriorly waited the larvae exit to out of the fruit until the transformation in pupae and posteriorly in adult stage. By the results obtained our can concluded that the lethal dose to larvae in mangoes infested with 5-8 days after infestation were 600 Gy and 1.000 Gy (0.6 and 1 kGy) respectively. The dose of 50 Gy prevented the total adult emergence for both treatments. 

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 Industrial diagnostics system using gamma radiation

Nukleonika ◽  
2015 ◽  
Vol 60 (3) ◽  
pp. 633-636
Author(s):  
Adrian Jakowiuk ◽  
Łukasz Modzelewski ◽  
Jan Pieńkos ◽  
Ewa Kowalska
Keyword(s):  
Early Detection ◽  
Ionizing Radiation ◽  
Gamma Radiation ◽  
Technical Condition ◽  
Remedial Action ◽  
Diagnostics System ◽  
Detection And Localization ◽  
Useful Lifetime ◽  
Gamma Scanning ◽  
Methods Of Measurement

Abstract During the operation of large industrial installations, a very important task is to maintain the proper technical state. In the event of an emergency, it is vital to locate the place of occurrence as soon as possible. In solving this type of problem, it often helps to apply the methods of measurement associated with ionizing radiation. One of these methods is the gamma scanning. The purpose of this type of measurement is the detection and localization of disturbance of technological processes which may result in incorrect decomposition the fl owing medium and workpiece (sediments, congestion) as well as damage to the internal constructions. A particularly: (i) preventive diagnosis - early detection of installation failure; (ii) rationalization of repairs and renovations - to determine the need to take or not to take remedial action; (iii) quick and precise installation inspections - to gain knowledge of the technical condition and technological installations; (iv) indication of worn parts and posing a threat - diagnostics of the technical condition installation; (v) forecasting the useful lifetime of equipment.

scholarly journals “ATOMIC LAW” OR “NUCLEAR LAW”? AN ACADEMIC DISCUSSION REVISITED

2018 ◽  
Vol 5 (3) ◽  
pp. 135-151
Author(s):  
J. Handrlica
Keyword(s):  
Ionizing Radiation ◽  
International Law ◽  
Nuclear Energy ◽  
Popular Literature ◽  
Atomic Energy ◽  
Soft Law ◽  
Legal Scholarship ◽  
National Legislation ◽  
Legal Norms ◽  
Energy Law

The terms “atomic law” and “nuclear law” are regularly being (to a certain part as synonyms) used in both scientific and popular literature to refer to a body of legal norms, governing peaceful uses of nuclear energy and ionizing radiation, as provided by sources of international law (“international atomic law,” or “international nuclear law”), national legislation and a complex body of unbinding norms (soft law). Further, several other variations of these terms are also regularly used (such as “atomic energy law,” “nuclear energy law,” “international nuclear law,” “law of the atomic/nuclear energy,” etc.). This contribution aims to identify the origins of this terminological labyrinth and to deal with the perception of these terms in the legal scholarship. Further, this contribution deals with the recent perception of these terms in the legal science of major States, using nuclear energy for peaceful purposes. This article aims to clarify the existing terminology, which is to large extent being used in the literature without an appropriate explanation. The author pleads for a consequent use of the term “nuclear law” (droit nucléaire, yadernoe pravo, Nuklearrecht, derecho nuclear, diritto nucleare) and presents arguments for such conclusion.

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 Potentials of Cow Dung Ash as Protectants of Cowpea Seeds against Callosobruchus maculatus F. (Coleoptera: Chrysomelidae)

2020 ◽  
Vol 2 (1) ◽  
pp. p128
Author(s):  
Mohammed Suleiman ◽  
Fatima M. Haruna
Keyword(s):  
Callosobruchus Maculatus ◽  
Lethal Dose ◽  
Adult Emergence ◽  
Adult Mortality ◽  
Cow Dung ◽  
Weight Losses ◽  
Cowpea Seeds ◽  
Randomized Design ◽  
Petri Dishes ◽  
Different Doses

Experiments were conducted to assess the protectant ability of cow dung ash (CDA) to cowpea seeds against Callosobruchus maculatus F. under laboratory conditions of 50-65% R.H and 28-32oC. The CDA at different rates of 0.625, 1.25, 2.50, 5.00, 10.00% (w/w) incorporated with cypermethrin powder at 0.625% were applied to 20 g of cowpea seeds in petri dishes. None of the ashes or cypermethrin was added to the control. Ten beetles were introduced into each of the petri dishes and covered with muslin cloth. The experiment was arranged in a completely randomized design (CRD) and replicated three times. Effects of the treatments on adult mortalities as well as median lethal dose (LD50) of CDA against C. maculatus were determined. Adult emergence and weight losses in seeds treated with CDA at different doses were assessed. Findings of the study revealed that the adult mortality of C. maculatus among different CDA treatments differed significantly (p < 0.05) and ranged from 13.33 to 100.00% 72 hours after treatment (HAT). Results of the study also showed that LD50 of CDA against C. maculatus at 24 hours after treatment (HAT) was 5.51 % (w/w). No adults emerged from the treated seeds and weight losses were observed in those treated with the lowest dose and the control only. Therefore, CDA could be utilized to protect cowpea seeds from C. maculatus infestations during storage.

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.

New Aspects of Radiotherapy in Rheumatoid Arthritis Biomarker: Radio Sensitivity Response to Acute Ionizing Radiation Induces Cell Characteristic Reprogramming and Enhanced Cytokine Release of In Vitro Activated Macrophage Cell Line (RAW 264.7)

2021 ◽  
Author(s):  
Zahra Bagheri-Hosseinabadi ◽  
Jaber Zafari ◽  
Fatemeh Javani Jouni ◽  
Hossein Abbasinia ◽  
Mitra Abbasifard
Keyword(s):  
Rheumatoid Arthritis ◽  
Radiation Therapy ◽  
Ionizing Radiation ◽  
Gamma Radiation ◽  
Inflammatory Disease ◽  
Raw 264.7 ◽  
Macrophage Cell Line ◽  
Macrophage Cell ◽  
Apoptotic Genes

Abstract The response of biological systems to various types of radiations have many ambiguous dimensions. Among ionizing radiations, in vitro external gamma radiation therapy has mostly studied as model to declare the biological system challenges with radiation effects. Cell/organism exposure to gamma radiation, caused cascade of ionization events such as severe irreversible biological damages. However, the biological responses and oxidative stress related mechanisms under acute radiation conditions poorly understood in inflammatory systems. Following study tried to give a model about ionizing radiation effect on the macrophage that had a key role in inflammation mechanisms; to evaluate the impact of radiotherapy approach for inflammatory disease as rheumatoid arthritis. To this aim, Macrophage cell line (RAW 264.7) culture, exposed to different doses of gamma radiation (0,4, 6, 8, 10 Gy). Cell viability, apoptosis, cell cycle, migration; NO and PGE2 production; expression of pro-inflammatory and apoptotic genes and cytokine secretion of macrophages was also evaluated.The results showed that gamma treatment, at 4 Gy radiation, have slight effect on macrophage characteristics and cytokine secretion pattern. Versus, higher doses (8 and 10 Gy) increased DNA damage, expression of apoptotic genes and secretion of NO and PGE2 cytokines. 6 Gy radiation, the maximum radiation dose, show moderate nondestructive effects and inflammation process modulation. In this study, doses higher than 6 Gy of Gamma radiation caused cell mortality. It seems that 6 Gy Gamma radiation modulate the inflammatory cascade caused by macrophage cell, as a central core of autoimmune inflammatory disease in acute dose radiation therapy.

scholarly journals Protective effects of zingerone derivate on ionizing radiation-induced intestinal injury

2019 ◽  
Vol 60 (6) ◽  
pp. 740-746 ◽  
Author(s):  
Jing Wu ◽  
Yuqing Duan ◽  
Jie Cui ◽  
Yinping Dong ◽  
Hongyan Li ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Morphological Changes ◽  
Lethal Dose ◽  
Intestinal Injury ◽  
Intestinal Morphology ◽  
Therapeutic Effects ◽  
Protective Effects ◽  
Intestinal Crypt ◽  
Proliferation And Differentiation ◽  
Crypt Cells

Abstract Intestinal injury is the primary toxicity of radiotherapy for pelvic and abdominal tumors, and it is also one of the common acute complications of radiotherapy. At present, there are no effective drugs to prevent intestinal injury in the clinic. Zingerone is a natural product with radioprotective effects. In this study, a novel compound (thiazolidine hydrochloride, TZC01) was synthesized by structural modification of zingerone. The effects of TZC01 on preventing intestinal injury from radiation were further investigated in this study. C57BL/6N mice were exposed to a lethal dose of abdominal irradiation (ABI) with and without TZC01 treatments. The morphological changes of the intestine and various makers of intestinal crypt cells were investigated. Treatment with TZC01 improved the survival rate of mice exposed to 12 Gy ABI. Moreover, TZC01 protected the intestinal morphology of mice, decreased the apoptotic rate of intestinal crypt cells, maintained cell regeneration and promoted crypt cell proliferation and differentiation. This study suggests that TZC01 has preventive and therapeutic effects on radiation enteritis by promoting the proliferation and differentiation of crypt cells to protect the small intestine from the toxic effects of ionizing radiation. Furthermore, the study of TCZ01 lays a strong foundation for developing novel radioprotectors with multiple properties.

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