Egyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Impact of occupational exposure to low dose ionizing radiation versus high dose exposure during radiotherapy on met Hb levels1923557710.21608/ajnsa.2022.96585.1512ENSanaaEl-benhawyRadiation Sciences Department, Medical Research Institute, Alexandria University, Alexandria, EgyptMoatazAl RobaRadiation Sciences Department, Medical Research Institute, Alexandria University, Alexandria, EgyptEnayatFahmyRadiation Sciences Department, Medical Research Institute, Alexandria University, Alexandria, Egypt.HayatKhalifaHematology Department, Medical Research Institute, Alexandria University, Alexandria, EgyptMahaAbubakr Feissal RabieMedical Laboratory Technology Department, Faculty of Applied Medical Science, Pharos University, Alexandria, Egypt.Journal Article20210917Background: Ionizing radiation affects human health as it breaks the chemical bonds of the molecules and damages DNA through the manufacturing of free radicals, resulting in apoptosis of proliferative cells/ damage to erythrocytes which may influence the quality of RBC concentrates. Objective: Our aim was to evaluate the effect of occupational exposure to low dose ionizing radiation versus high dose exposure during radiotherapy on met Hb level. Subjects and Methods: 150 individuals were included divided into two groups; group I, includes 50 radiation workers (RWs) compared to 25 healthy volunteers' as control group for radiation workers who never exposed to radiation in their work. Group II includes 50 breast cancer patients who were treated with post-operative radiotherapy compared to 25 matched age and sex healthy female volunteers' as control group who had never worked in radiation-related jobs. Methemoglobin was assayed by ELISA. Serum ferritin and iron by automated quantitative enzyme linked fluorescent assay. Results: A significant decrease in WBCs, MCV and serum ferritin was observed among RWs in comparison to control group. Methemoglobin levels and Reticulocyte % were significantly higher in RWs in comparison to BCPs after radiotherapy. Mean values of WBCs, HB and RBCs were significantly lower in BCPs after radiation therapy when compared to radiation workers while there was insignificant difference in mean values of Ht, MCV, MCH and RDW. Conclusion: Serum methemoglobin levels and Reticulocyte % can be used as biological dosimeters for early assessment of the absorbed dose in radiation workers.https://ajnsa.journals.ekb.eg/article_235577_a657855a6b86927c5e241db0577a019a.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Decommissioning Plan and Cost Estimation of TRICOII Research Reactor102023557810.21608/ajnsa.2022.97641.1514ENHeritier BeyaTshitengeCommissariat General al Energie Atomic (CGEA), DR CongoRowayda FayezMahmoudEgyptian Atomic Energy Authority, 3 Ahmed El- Zomor, Cairo, Egypt0000-0003-4199-9706Ahmed Emad El-DinEl-SaghirNucl. Eng. Dept., Faculty of Eng. Alexandria University, Alexandria, EgyptAlya AdelBadawiNuclear &amp; Radiation Engineering Department, Alexandria University, Alexandria, EgyptMohamed KShaatEgyptian Atomic Energy Authority (EAEA), Cairo, Egypt0000-0002-9558- 63Journal Article20210923Abstract<br /> Decommissioning is the final stage of the reactor lifetime. A preliminary decommissioning plan has been presented for the TRIGA Mark II Research Reactor which is owned by the Democratic Republic of Congo (TRICO II). The first step in the decommissioning plan is the safe handling of the spent nuclear fuel to its final destination. Monte Carlo MCNPX code was used for modeling the history of the spent fuel of the reactor. The activity and inventory of the radionuclides for the spent fuel of the reactor were calculated. These data are necessary to support the decision-makers and the radiation protection requirements. <br /> The decommissioning strategy, management, organization, and decommissioning activities were presented based on the IAEA guidelines. The cost estimate of the decommissioning of the TRICO II reactor was calculated using IAEA software, CERREX code. The input inventories of the decommissioning activities were estimated.<br /> The calculated total activity for the spent nuclear fuel is equal to 19.32 E+02 Ci. and the average value for each spent fuel element was about 27.603 Ci. Pu-239, Pu-241, and U-233 are fissile nuclides produced during TRICO II operation periods, their total amount is about 4.0 g of fissile nuclides. <br /> Also, the results showed that the estimated decommissioning cost was about six million US dollars, which is in the range of cost estimation for similar TRIGA reactors. Moreover, the total amount of radioactive waste generated from the decommissioning activities has been estimated to be about, 806.5 tons of low-level waste, which can be managed.https://ajnsa.journals.ekb.eg/article_235578_fb3f78aa8e47e83ad00c278bd9b8e877.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Preparation and Evaluation of a material containing both micropores and mesopores as a dual-function adsorbent for removal of cationic and anionic species from aqueous solutions213222490310.21608/ajnsa.2022.99473.1517ENMahmoudAliEgyptian Atomic authority, Hot Labs. CenterE AAbdel-GalilAtomic Energy Authority, Hot Labs. CentreMostafa M.HamedHot Lab. Center, Atomic Energy Authority, Egypt0000-0003-1148-164XJournal Article20211004The sorption potency of any material toward different radionuclides is closely related to porous structures and the surface functional groups. In this research, for the first-time, we report the process conditions to attain a new low cost carbonaceous adsorbent from mint waste (CAMW) containing both micro- and meso-pores. The new sorbent was analyzed using various analytical techniques. From the study of surface properties it was found that synthesized material possesses a high surface-area (BET) of 735.75 m2 /g, Langmuir surface-area of 1015.0 m2 /g, total pore-volume of 0.596 cm3/g and average pore-diameter of 0.60 nm with a reasonable yield, 32.4%. Radionuclides contamination in aquatic environment has become a dangerous threat today. Removal and recovery of these species (anionic and cationic radionuclides) prior to extrusion into the environment is essential for the safety of organisms. Therefore, we evaluated removal efficiencies of this new carbonaceous material as a dual-function sorbent for the retention of cations (Cs(I), Co(II), Sr(II) and Eu(III)) and anions (Cr(VI) and Mo(VI)) from aqueous solutions. Sorptive removal of various radionuclides (cationic and anionic species) from environmental samples confirmed the validity of results gained in these studies. All these values indicate that prepared CAMW possesses excellent adsorption capacity for both cationic and anionic radionuclides and can generally be considered as an advanced adsorbent.https://ajnsa.journals.ekb.eg/article_224903_88e3474d217fc789f1ca93103b139fbd.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Evaluation of the Efficiency of the Hydrophobic Surface Treatment for Bricks Using Neutron Imaging334022490610.21608/ajnsa.2022.100231.1518ENEssamHammadReactor physics department, Nuclear research Center, Egyptian Atomic Energy Authority, Egypttion0000-0003-2993-5267Abdelghany AliEl AbdReactor physics department, Nuclear research Center, Egyptian Atomic Energy Authority, Egypt0000-0003-2037-1266Mohamed HelmyTamanDepartment of Structural Engineering, Faculty of Engineering, Tanta University,31511,Tanta, EgyptSergey YevenjevichKiсhanovFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980, Dubna, RussiaK MNazarofEurasian NationalUniversity, 010008, Astana, KazakhstanJournal Article20211016ABSTRACT<br /> Capillary water absorption in building materials should be minimized because water carries chemical compounds that cause degradation. The effect of the adhesive covering on capillary water absorption in four different types of masonry bricks was investigated using neutron radiography. Only one sample revealed the creation of two layers of the coat to protect bricks against water infiltration. Water is absorbed into the gap between the two layers by capillary action. The progress of the water front between the two layers is proportional to the square root of the absorption time. The capillary penetration coefficient is 3.25 times faster than that of the identical type of sample in the bulk. Between the two layers, the amount of water absorbed is half of what is in the bulk of the sample. The coat is incapable of repelling water ingress in some samples The coat is effective on some surfaces but not recommended on others.https://ajnsa.journals.ekb.eg/article_224906_22898ff88d402a1922254c72c5bcc2fb.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Small Signal Analysis of Vertical cavity Surface Emitting Lasers under the parasitic effect414522490710.21608/ajnsa.2022.101466.1520ENShaban MEladlRadiation Eng. Dept, NCRRT, EAEA0000-0002-0836-1084Journal Article20211017Abstract: <br /> In this paper, a small signal analysis of a Vertical cavity Surface Emitting Laser (VCSEL) under the parasitic condition is developed. The analysis is based on the transfer function of the considered device under the parasitic case. The dominant pole approximation scheme is used for the reduction of its characteristic equation. The Convolution Theorem is also applied to get the temporal response. All interesting parameters are outlined. The effect of parasitic cutoff frequency is also analyzed. The results show that when the parasitic cutoff frequency is lower than the damping rate, the device behaves like first order low pass filter, while it behaves like second order low pass filter when the parasitic cutoff frequency is greater than the damping rate. On the other side the device operates very fast towards the second order low pass filter if the resonance frequency is increased, so it can be exploited in very high speed optical systems.https://ajnsa.journals.ekb.eg/article_224907_a552e1edb3f43ea963b61ad8416d277a.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Radiological Impacts of Petroleum Exploration Activities in Ras Qattara Area, North Western Desert, Egypt.465422490810.21608/ajnsa.2022.103218.1523ENMahmoud HashimMahmoudMinistry of Education, egyptMohamed AhmedEl-ZohryPhysics, Faculty of Scienceو Sohag University
Sohag, EgyptJournal Article20211028The activity concentrations and the associated hazard indices of primordial radioactive nuclides 238U, 232Th and 40K in soil samples of different depths from petroleum well in Ras Qattara area north western desert, Egypt were estimated using gamma-ray spectroscopy system using a closed end-coaxial Canberra N-type HPGe detector of vertical configuration, with 40% relative efficiency and 2.0 KeV energy resolution at 1.33 MeV photons of 60Co. The average soil activities for 238U, 232Th, and 40K were 32.07±2.75, 14.04±3.35 and 297.44±14.05 Bq/kg respectively. The average values of radium equivalent (Raeq), absorbed dose rate (Dout), annual effective dose equivalent (AEDE), annual gonadal dose equivalent (AGDE) and excess lifetime cancer risk (ELCR) were 75.04 Bq/Kg, 35.70 nGyh-1, 0.04 mSvyr-1, 251.16 μSvyr-1 and 0.15×10-3 respectively. Some other radiological hazard indices such as external hazard index (Hex), internal hazard index (Hin), and representative level index (Iᵧ) were estimated and were compared with the world average values. The average values for all radiological hazard indices in the soil sample of the present study are lower than the limit average values recommended by UNSCEAR 2000.https://ajnsa.journals.ekb.eg/article_224908_cc39e8d09362ae895636210cd5e92306.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Artificial Neural Network Model for Fault Diagnosis of Rotating Machine in ETRR-2 Research Reactor556122490910.21608/ajnsa.2022.106437.1526ENSaid ShabanHaggagAtomic Energy Authority of Egypt, Reactors DepartmentAhmed RamadanAdlyETTR-2, EAEAMagdy MahmoudZakyETRR-2, EAEA, EgyptJournal Article20211116This article characterizes vibration signals using Artificial Neural Network (ANN) method to develop an effective and reliable feature sets for detecting and diagnosing faults in a centrifugal pump (ETRR-2 research reactor core coolant pumps). In this paper, a modular ANN are used for modeling the ETRR-2 research reactor core coolant pumps vibration monitoring. The input and the output signals of the vibration transducer are used as input source data for the ANN model. The amplitudes and frequency domain are inputted to the ANN separately from the vibration data. It is noted that the features statistical have good results based on frequency and amplitudes domains. The ANNs are used to detect the misalignment, unbalance severity, looseness bearing, and anti-fraction. The results are very useful for maintenance making decision. This methodology can be used for the research reactor coolant pumps. Hence, it may turn out to be a powerful tool for early detection of pump fault.https://ajnsa.journals.ekb.eg/article_224909_15b8a79bda5e2703cd6b9bc652458d87.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Synthesis Characterization and Gamma Irradiation Effect on Cobalt Doped ZnO Diluted Magnetic Semiconductor627322491010.21608/ajnsa.2022.106836.1528ENAbdelhameedSharafRadiation Engineering Dept., NCRRT, EAEAJournal Article20211118In this study,Cobalt (Co)-doped to Zinc Oxide (ZnO)samples prepared as thin films were obtained using spray pyrolysis. The prepared thin films have different concentrations of Cobalt. Scanning electron microscope, X-ray diffraction, and optical spectroscopy have been used to investigate the effect of Co concentration on the physical properties of deposited thin films. The grain size has been obtained using Scherrer's equation.From the obtained results, the grain size behaviouris non-linearly with Co-concentration level. The fabricated thin films studied using electron spin resonance (ESR) to observe the resonance absorption of microwave radiation by the spins of an electron of a molecule or an atom in a magnetic field.The study was performed before and after irradiation doses of 1 KGy and 3 KGy.The ESR signal show ferromagnetic response at room temperature which is imporoved after irradiation with gamma ray.<br /> The optical band gap of pure ZnO film was found to be 3.25 eV and the minimum bandgap is 3.11 for 1wt%. The existence of Co in the obtained film was confirmed by Energy Dispersive X-Ray (EDX)data. The percentage of Co was found to increase from 1.9% to 5.4% as the wt% increases. Films are irradiated with gamma ray with 1KGy and 3 KGy. The effect of this irradiation on the magnetic and structural properties was investigated. Magnetic measurements for all prepared samples show a Room Temperature Ferromagnetic (RTFM) behaviour. The ESR signal is dependent on the increase of both Co concentration and gamma-ray irradiation dose.https://ajnsa.journals.ekb.eg/article_224910_25028c2f41527eef49e64ff10d6a5c12.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Nanoparticles and irradiated chitosan impact on sweet green bell pepper (Capsicum annum L.) under cold storage conditions748823557910.21608/ajnsa.2022.110946.1533ENAhmed HamdyEwaisQuality Assurance and Quality Control Department, Nuclear and Radiological Safety Research Center (NRSRC), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.Mai MohamedRaslanBiotechnology and Life Sciences Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, 62511, Egypt.Ramadan AttiaHassaneinFood irradiation, Artificial irradiation division, NCRRT, Atomic energy authority, Cairo, EgyptIslam TahaZidanRenewable Energy Science and Engineering Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, 62511, Egypt.Journal Article20211213Abstract<br /> Biosynthesis of nanoparticles (NPs) is a rapidly expanding topic; the junction of nanotechnology and biotechnology has gotten a lot of attention as a result of the growing need for ecologically friendly and effective food safety technologies. Sweet green bell pepper (SGBP) is a perishable vegetable with a short shelf life and a high risk of fungal illness throughout the handling and storage procedure. This study aims to compare the efficacy of different chitosan preparations (irradiated and nanoparticles) in preserving SGBP. Chitosan powder was irradiated by Co60 γ–radiation with a total exposure dose of 40 kGy. Six solutions were prepared; chitosan, irradiated chitosan, and nanocomposite (chitosan, mucilage) with two concentrations, 0.5%,1% for each one. The treatments were applied for the six groups of SGBP fruits by immersion in one solution for two minutes and stored in the refrigerator condition for 28 days. Microbiological and physiochemical analysis were determined weekly. All treatments generally decreased the total microbial count, especially at 1% concentration of the irradiated chitosan treatment. The fungal growth was completely suppressed by treatments with concentration 1%. In addition, the results of chemical analysis showed that the treated fruits retained the acceptable quality characteristics of the consumers compared to the untreated fruits.https://ajnsa.journals.ekb.eg/article_235579_2751843e9162f705b97e5226425aaf6f.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Evaluation of Natural Radioactivity and Risk Assessment of Radon in Surface Soils from Gold Mining Areas8910123558010.21608/ajnsa.2022.112724.1535ENEman SamirAbd El-HalimWomen Faculty- Ain Shams UniversityJournal Article20211223Measurements of natural radioactivity in surface soils from a gold mining area were performed by using aHPGe detector with a specially designed shield. Soil samples were collected from Um Garaiate mine in Southeastern area of Egypt and Mahd Ad-Dahab mine in Western of Al-Madina Al- Munawara area in Saudi Arabia. The obtained results of uranium and thorium series as well as potassium (40K) were discussed. Radiological hazard indices in the gold mining area were found not to exceed to the permissible limits.<br /> The Pearson correlation has shown a strong correlation between all radiological hazard indices with 226Ra and 238U while a quite good correlation was obtained with 232Th due to the fact that 238U and 232Th series are associated together in the natural and a negative correlation is with 40K, as this isotope not decayed from 238U and 232Th series.<br /> The solid state nuclear track detector SSNTD (CR-39) were also used to measure the radon concentration, as well as the annual absorbed dose DRn, equivalent dose and effective dose to lungs. The results obtained in this study demonstrate that the mining activity at um-Garaiate in Egypt and Mahd Ad-Dahab in Saudi Arabia, respectively, poses no significant radionuclide hazard to the miners and the public.https://ajnsa.journals.ekb.eg/article_235580_358242b0b1c67797fb04b9b0ca561848.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Determination of Radionuclides and Their Radiological Risks in Different Brands of Cooking Oil Samples10210722491210.21608/ajnsa.2022.114377.1538ENBassmaElbadryAssessment professor of nuclear physic Ain Shams universityJournal Article20220103The concentration of radon-222 in different brands of cooking oil samples was evaluated using a passive technique. Besides, the concentration of radium-226 and uranium-238 was calculated. Radiation hazard indices including the annual ingestion dose and excess cancer risk caused by the ingestion of radon were determined for all oil samples. The results demonstrated that activity concentrations of 222Rn, 226Ra, and 238U in all cooking oil samples were lower than the recommended values. A positive correlation was observed between radon concentrations and radium concentrations as well as radium concentrations and uranium concentrations in cooking oil samples. The maximum value of the annual ingestion dose calculated from the concentration of 222Rn is 131.417±6.933 nSv/y. Our results show that all the oil samples under this study do not create any cancer risk from ingestion of radon or other natural radionuclides through used cooking oil at these exposure levels and are safe for public healthhttps://ajnsa.journals.ekb.eg/article_224912_54ee6f68c780104df234a7d9239a90f4.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Bioevaluation of 99mTc-Pipazethate as a potential guide tracer for malignant tumor imaging.10811723558210.21608/ajnsa.2022.115910.1544ENMarwaRefayeRadioactive isotopes and generators department, Hot Lab. Center, Egyptian Atomic Energy Authority,Sabah IbrahimKhaterRadioactive Isotopes and Generators Department, Hot Labs. Center, Atomic Energy Authority, Egypt.0000-0003-1442-5619DinaEl SharawyLabeled Compounds Department, Hot Lab. Center, Egyptian Atomic Energy Authority.Journal Article20220112Diagnosis of tumor is one of the most important stages in the treatment, as good quality imaging and accurate analysis means to choose the right and more effective tracer. Therefore, the study of the ability of new radiopharmaceutical compound to track solid tumor became a pioneering field. Thus, the study of pipazethate as a possible solid tumor marker was in our scope. It was labeled with technetium reaching a (RCY) radiochemical yield of 96.5%, using SnCl2 .2H2O as a reducing agent. A biodistribution study of 99mTc-Pip in tumored mice was performed which revealed the capability of the complex to image solid tumor as it was accumulated in the tumor with a concentration of 13% at 30min (p.i) post injection T/NT ratio was considered, the ratio reached 2.9 at 30 min post-injection, and this value confirmed the high sensitivity and selectivity of 99mTc-Pip to tumor. 99mTc-Pip passed the (BBB) blood brain barrier reaching the brain in a concentration of 5.8g/tissue at 5 p.i in normal mice while reached to 5.5 g/tissue at 5 p.i in tumored mice. Finally, molecular modeling was applied for prediction of the most energetically stable structure of 99mTc-pip.https://ajnsa.journals.ekb.eg/article_235582_cf6a3da4e6aefa0509cfc6beb2a1aab9.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Potential activity of silver/hydroxyapatite nano composite against damaged liver consequence to irradiation11812923558410.21608/ajnsa.2022.116315.1545ENOsama AhmedAbbasRadioisotopes Department, Nuclear Research Center, Egyptian Atomic Energy Authority0000-0002-5301-7856Eman IsmailAbdel-Gawad,Radioisotopes Department , Nuclear research Center Egyptian Atomic Energy AuthoritySamehAwwadDepartment of chemical engineering, Higher Institute of Engineering &amp;Technology, New Damietta, EgyptJournal Article20220114A silver/hydroxyapatite nanocomposite (nAg/HAp) has been formulated by a chemical route and characyerized by X-ray analysis spectroscopy, Scanning Electron Microscope, Transmission Electron Microscope. The current study deals to assess the efficiency of nAg/ HAp against whole body γ-irradiation induced hepatic damage. Twenty-four male rats were assorted into three groups; one group was left as control while the rest two groups were subjected to 8 Gy single dose γ-ray and then treated by an intravenous injection (i.v.) with nAg/HAp solution. DNA damage and biochemical analyses for hepatic tissue and serum including liver function enzymes, antioxidant enzymes and inflammatory markers were evaluated. Histopathological examination was performed to verify the reached biochemical analyese outcomes. The expermintal results depicted that i.v. nAg/HAp repaired the damage DNA induced by irradiation and this improvement confirmed by decrease in the concentration of 8-hydroxy-deoxyguanosine (8-OHDG) and caspase-3 as well as elevation of the antioxidant enzymes in the hepatic tissue. On the other hand, nAg/HAp significantly recovered serum liver enzymes (AST, ALT, and LDH) total bilirubin (TB) and albumin as well as decreased the activities of MCP-1, IL-6, IL-10, TNF-α and MMP-9. Histopathological examinations exhibited the ability of nAg/HAp in overcome the damage consequent to irradiation and recovered the hepatic cellular structure for nAg/HAp group with minor change represented by diffusion of some inflammatory cells in between hepatocytes. It can be concluded that nAg/HAp offering a promising treatment against hepatocellular injury induced by γ-irradiation.https://ajnsa.journals.ekb.eg/article_235584_2cf6dc963955bbc6eee0c2572b57b0be.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701The Possible Impact of Spirulina and Chlorella on some Hematological and Biochemical Aspects in Irradiated Rats13013723558510.21608/ajnsa.2022.125836.1558ENNahedAbdel-AzizRadiation Biology Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority
Cairo, Egypt.AhmadBadawyRadiation Microbiology Department, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt.AhmadEl-GamalBotany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt.EhabEl-BelelyBotany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt.AlyHammadRadiation Microbiology Department, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt0000-0001-8410-2693AbeerZakriaE.A.E.AJournal Article20220306Background: Patients undergoing radiotherapy may suffer from many harmful effects including gut microbiota injury, therefore, the use of exogenous probiotics is suggested to reduce these effects. Aim: The present study aimed to determine the possible protective effect of Spirulina platensis and Chlorella vulgaris against radiation-induced hematological and biochemical disturbances in male albino rats. Materials and Methods: Spirulina or chlorella was administered orally at a dose level of 300 mg/kg body weight daily for one week before and one week after the exposure to gamma radiation (6Gy, single dose). Results: Whole-body gamma-irradiation induced a significant decrease in total leukocyte count, red blood cell count, hemoglobin concentration, hematocrit value and platelets count, compared to their corresponding values of the control group. A significant increase in alanine aminotransferase (ALT) activity, marker of liver damage, and a non-significant increase in urea and creatinine levels, markers of kidney function was is observed. Spirulina or chlorella administration pre- and post-irradiation has significantly attenuated the radiation-induced disturbances in the studied parameters. Conclusion: oral supplementation of spirulina or chlorella may afford protection against radiation-induced detrimental effect and may preserve the tissue integrity and the functions of different organs in the body.https://ajnsa.journals.ekb.eg/article_235585_b3590a6c65cf6eed0a9b8b3e13f57098.pdfEgyptian Society of Nuclear Sciences and Applications (ESNSA)Arab Journal of Nuclear Sciences and Applications1110-045155320220701Physiological Parameters and Drought Tolerance in some F4 Promising-Glaucousness Families of Bread Wheat13814924717910.21608/ajnsa.2022.125854.1559ENKhaled FouadAl-AzabPlant Research Department
Nuclear Research Center
Atomic Energy Authority, Abozaabal, 13795, Cairo, Egypt.0000-0003-4840-6870Ahmed MElnaggarAgronomy Department, Faculty of Agriculture, Cairo University, Giza, Egypt.0000-0003-4840-6870Abd El-Samad MahmoudYounisDepartment of Field Crops Research, Agricultural and Biological Research Division, National Research Centre, Dokki, 12622, Cairo, Egypt.0000-0001-6368-839xMohammedAyaadPlant Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Abozaabal, 13795, Cairo, Egypt.0000-0001-8674-9861Ibrahim OsamyHassanPlant Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Abozaabal, 13795, Cairo, Egypt.0000-0002-6975-0833Mohamed Ahmed ElsayedBasyounyPlant Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Abozaabal, 13795, Cairo, Egypt.0000-0002-2090-9428Journal Article20220307The selection from segregating generations of hybrid wheat combinations succeeded in developing new genotypes that possess adaptive drought tolerance traits, such as glaucousness. This study was to develop new glaucousness high-yielding recombinants under drought conditions. Twenty-one promising F4 families selected from segregating generations of a cross between a glaucous mutant and an Egyptian cultivar were evaluated for superiority to their parents and the best check cultivar under water stress (WS) and well watering (WW) conditions. A split-plot design with randomized complete blocks was utilized in three replications of the experiment. A total of 25 genotypes were planted in the main plots and two irrigation regimes were assigned to the subplots (21 F4 families, two parents and two check cultivars). Transgressive segregation occurred in yield components and physiological attributes, except for spike length. Based on drought tolerance index values, only eleven F4 families were found tolerant and superior in grain yield/plant (GYPP) to the higher parent and the higher check cultivar under WS and WW. The superiority in GYPP reached in the F4 family No.4 to 43.27 and 55.65 % and 50.31 and 77.86 % over the higher parent and the check variety under WW and WS, respectively. The top seven grain-producing and drought-resistant families have been discovered. Such genotypes were shown to have a high wax content, a high net photosynthesis rate, and a high stomatal conductance under both WS and WW conditions. These F4 families should be suggested to wheat breeders seeking to increase yields under drought conditions.https://ajnsa.journals.ekb.eg/article_247179_95087fe042a50340b8d6135079cb638e.pdf