@article { author = {Khalil, Alaa}, title = {Electromagnetic Radiation Hazards on Cellular Bioelectricity of Rats’ Blood}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {1-8}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.46762.1411}, abstract = {The effect of exposure to electric field of 4kV/m-50Hz, magnetic field of 0.3mT-50Hz and high energy photons of (6 MeV; 0.002Ao-1 rad) on rats’ blood bioelectricity were studied. The electrical conductivity, relative permittivity and dielectric loss factors were monitored in the frequency range of 42Hz-8MHz for blood samples collected directly after exposure and 45 days’ post exposure. Moreover, the exposure effect was studied on the blood minerals (Sodium, Calcium, Phosphate and Potassium) and protein concentrations. Our findings illuminated maximum shift at 5MHz in conductivity by 62% and in permittivity by 23 folds higher than control for samples collected after exposure to magnetic fields (30days-8h/day). Then it followed by samples collected after exposure to high energy photons as conductivity changed by 46% and permittivity by 8 folds higher than control. On the other hand, maximum deteriorative impact of exposure in minerals was shown for samples exposed to high energy photons as it indicated percentage of change in relative to control by 13%, 17% and 5% for phosphate, calcium and potassium respectively. No improvement shown for samples collected after 45 days’ post exposure. The exposure to magnetic field has higher effect than exposure to electric field even at same exposure periods. The effect of exposure to non-ionizing radiations should take same concerns as ionizing radiation. Full blood analysis should include dielectric characteristics as parameters indicate possible cellular injuries. The need of more work to study the possible health consequences due to exposure to such non-ionizing radiations and to set new exposure limits.}, keywords = {Radiations,Electric Field,magnetic field,High Energy Photons,Blood,Conductivity,permittivity,dielectric loss,Blood Minerals}, url = {https://ajnsa.journals.ekb.eg/article_186156.html}, eprint = {https://ajnsa.journals.ekb.eg/article_186156_f90d3f591a1d37fd4e2a954c0d3c93e9.pdf} } @article { author = {Elkhatib, Hesham and Salem, Mohammed and Abd ElMaksoud, Abd ElFatah}, title = {Studying and simulation of clean area for Tc 99m production in Radioisotope Production Facility}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {9-18}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.59109.1438}, abstract = {Clean areas nowadays are advanced technology solutions with very high standard and criteria applied on air quality level. Egyptian Radioisotopes Production facility (RPF) is a facility that requires clean area to produce technetium (Tc99m) isotope for medical purposes. The air cleanliness inside area is dependent on the air quality of supplied air, contaminant and pollutant sources, dedicated ventilation system in addition to rigorous precautions to sterilize space of the area and commitment to follow standard recommendations. Two main standard classes are available in production area, A and C according to ISO 14644-1. Our paper deals with class C in which isotope is produced and some tests are conducted to know particle counts in that area in addition to prediction of these counts by computer simulation Contam-CFD0 program, which predicts transient particles count behavior which compared with standard WHO values and measurements for validation. Biological tests are also implemented to monitor sterility of area to confirm cleanliness and validity for processing medical radioisotope. High efficiency particulate air filters with class H14 are dedicated for the clean area and equipped with pressure drop manometer for replacement in case of blockage. Simulation program is also used to predict particles concentration in case of filter contamination.}, keywords = {Contam,Clean room,modeling,particle,Ventilation,Computational Fluid Dynamic,sterility}, url = {https://ajnsa.journals.ekb.eg/article_186157.html}, eprint = {https://ajnsa.journals.ekb.eg/article_186157_03438776a9c3b790ae148d764ac6ef03.pdf} } @article { author = {Eskander, Samir and Ezz El arab, Alia}, title = {Protective Capacity of Fusarium oxysporum Extract Against Gamma Radiation. Study for Some Biochemical Parameters in Albino Male Rats}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {19-29}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.61068.1443}, abstract = {The present work search the protective capacity of Fusarium oxysporum phosphate buffer extract (FO) against gamma radiation (ɣ-IR) based on evaluating the changes in some blood components in rat model. The variations in haematological and pairs of biochemical parameters were determined for 40 albino male rats which divided into five groups : negative control , positive control, i.e. irradiated only , and three treated groups administrated increasing dose of (FO) after single four Gray (Gy) gamma irradiation dose. Three doses of FO extract (0.15, 0.3 and 0.6 mg/g body mass) were chosen, as protective doses, for subsequent evaluating of its antioxidant activity and ameliorating capacity toward radiation-induced oxidative stress. The changes in the chosen parameters, due to 4 Gy irradiation and then administrating the FO, were computed after 1, 2, 3 and 7 days. Total serum protein, albumin, total globulin, besides some parameters of complete blood count (CPC) were determined and the data reached were analysed to evaluate the capacity of FO to compensate the gamma irradiation injures. The present work is assuming that: biocomponents extracted from FO fungi have a protective role against gamma radiation which can establish protocols for medical management of radiation injuries based on natural medication.}, keywords = {ɣ-radiation,CBC,Fusarium oxysporum extract,protective role,albino rats}, url = {https://ajnsa.journals.ekb.eg/article_186158.html}, eprint = {https://ajnsa.journals.ekb.eg/article_186158_ba51ef2efceeaaa3bb352cf6ca43c622.pdf} } @article { author = {EL-BAYOUMI, AHMED and madani, mohamed and Atta, mohamed and Nasr, GAMAL and Hamza, Samier}, title = {Electron Beam Modification on Dielectric, Thermal, and Thermo-mechanical Properties of Styrene Butadiene Rubber/ Clay Nanocomposites}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {30-38}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.33911.1374}, abstract = {The effect of the surface treatment of clay nanoparticles on the Styrene -butadiene Rubber (SBR) /clay nanocomposite was studied. The treatment process was done by coating the clay by trimethylolpropane tiracrylate (TMPTA) then irradiated by 100 kGy of an electron beam accelerator. Two distinct groups from SBR/ Nano treated and non-treated clay composites were prepared to be compared with each other. The effect of clay nanoparticles loading and treatment process on the rubber was investigated by Dielectric properties, Thermal gravimetric analysis (TGA), thermomechanical analysis (TMA), and volume fraction dependence. It is found that by the addition of clay, there is a decrease in the amorphous contents of the samples owing to the detectable increase in the relaxation time as observed from the dielectric relaxation spectroscopy measurements. The depolarizing factor, calculated by Tasangaris equation indicates the change of the shape of clay particles from oblate ellipsoids to the shape of a sphere with the applied frequency. The activation energy was calculated for all samples and show that it decreases with the treatment process while increased with the increase of the clay. Furthermore, the weight loss has an undulatory behavior with the clay increasing and treatment process.}, keywords = {SBR,Nanocomposites,Dielectric properties,AC conductivity,Thermal analysis}, url = {https://ajnsa.journals.ekb.eg/article_188901.html}, eprint = {https://ajnsa.journals.ekb.eg/article_188901_018d0c867dc18c9cd40dc40584a0aeb1.pdf} } @article { author = {Aydia, Mohamed and Abdel Rahman, Rehab and Rashad, Ahmed and Azony, Khaled}, title = {preparation and characterization of new nanoparticles compounds based on iron and iodine as prospective materials for medical applications}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {39-53}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.40220.1395}, abstract = {Developed compounds of magnetic iron iodide nanoparticles (MIINPs) were simply and cheaply prepared for their potential use in the bioapplications through magnetic hyperthermia therapy, using a co-precipitation method based on the study of various factors such as temperature, molar ratio and pH. Two samples of MIINPs were chosen based on the proportions of iron and iodide in the sample, respectively 45 and 55% in MIINPs-1 and 52 and 48% in MIINPs-2. Fourier transforms infrared spectroscopy (FTIR), thermal analysis (TA), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) were used to characterize the prepared compounds. The chemical composition of MIINPs-1 and MIINPs-2 was determined by means of an elemental analysis using EDX technique and confirmed using structural modeling by Visual Minteq 3.0, Match 1.9 and Endeavour 1.7 software. The magnetic properties of both samples were measured and found to be superparamagnetic materials. Both MIINPs-1 and MIINPs-2 samples have approximately the same magnetization (nearly 36.1 emu/g) in the 500 Oe coercive field as safe operating limits for MHT achieving 94% and 86.4% of their saturation values respectively. Specific absorption rates (SARs) were practically and theoretically determined as well as it was found that the practical SAR value of MIINPs-1 is much closer to the theoretical value than in the case of MIINPs-2.}, keywords = {magnetic nanoparticles,hyperthermia,Specific absorption rate (SAR),magnetization,Cytotoxicity}, url = {https://ajnsa.journals.ekb.eg/article_188902.html}, eprint = {https://ajnsa.journals.ekb.eg/article_188902_6a84ded5125004d677eecc830acfe8d9.pdf} } @article { author = {El-Gogary, Magdi}, title = {Quark-Hadron Model for Elastic scattering between two-composite systems at relativistic energies}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {54-66}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.64561.1451}, abstract = {We have previously developed formulas to calculate the full Glauber series of the elastic scattering between two composite systems their structures are pictured as bag of quarks or as cluster of nucleons. In this work, we have constructed a hybrid model in which the quark-hadron pictures are combined. The elastic cross sections of alpha-proton at center of mass energy √(s )=89 GeV and alpha-alpha at √(s )=126 GeV are evaluated by the hybrid model, the pure quark and conventional nucleon models. The results of different approaches are compared with the experimental data. The comparison shows that the predictions of the three model are identical at forward scattering angles and are significantly different at large momentum transfers. At large angles, the hybrid model calculation fits very well the experimental data than the calculations of quark and nucleon models. The nucleon model prediction provides better agreement with the data than the quark model calculation. The improvement achieved by hybrid model over the quark model at large scattering angles shows that the inclusion of quark–quark interactions is more consistently when the separation between the colliding nucleons is less than the hadron core.}, keywords = {Glauber’s multiple scattering theory,Differential cross-section,QQ and NN scattering amplitudes}, url = {https://ajnsa.journals.ekb.eg/article_189494.html}, eprint = {https://ajnsa.journals.ekb.eg/article_189494_155a21dd668124e00a1b4af583171853.pdf} } @article { author = {Galal, Yehia and Zaki, Zaki and Habib, Fahmy and Abdel Hameed, Abo El Nasr}, title = {"Effect of P Rates Combined With PDB on Nutrients Uptake by Wheat Grown Under Organic Farming of Sandy Soil Using 15N Tracer Technique"}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {67-82}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.53137.1421}, abstract = {Under field conditions, wheat response to organic amendments and B. megatherium inoculation as well as different rates of natural rock P fertilizer (NRP) was traced. Grain yield of wheat was higher with 100 kg P ha-1 than rate 50 kg P ha-1 while both of them surpassed the un-fertilized control. In case of inoculated plants, grain yield was significantly higher with quail feces additives than animal manure and peanut residues. B. megatherium induced slight increases in N uptake comparing to the un-inoculated plants. Peanut residues, but slightly, resulted in N uptake values higher than either quail feces or animal manure. Increasing rock-P levels increased N uptake over the unfertilized or those received 50 kg ha-1 treatments. Added quail feces had increased P uptake over those resulted from peanut residues and animal manure. Quail feces resulted in relative increase of P uptake by about 5% and 15%; 16% and 19%; 17% and 4% over peanut and animal manure for P0, P50 and P100, respectively. Inoculation with B. megatherium had, to some extent, enhanced K uptake by grains comparable to the un-inoculated one when plants treated with peanut residues. Nitrogen portion derived from (Ndforg) peanut straw and quail feces to inoculated plants was relatively increased, on mean average basis, by about 19% and 16%, respectively over the un-inoculated plants. Efficient use of N derived from peanut straw and quail feces (Org-NUE %) as well as urea-NUE% by inoculated plants was slightly increased under all rock-P levels over those of the un-inoculated plants.}, keywords = {B. megatherium,manure,P Rate,Rock-P,Tracer technique}, url = {https://ajnsa.journals.ekb.eg/article_188904.html}, eprint = {https://ajnsa.journals.ekb.eg/article_188904_41b17ee08933ff4cd3430f8c6956e5b0.pdf} } @article { author = {Shabaan, Doaa and Ibrahem, Taysir}, title = {Study the Optical Characteristics of CR-39 Nuclear Track Detector Using Ultraviolet Irradiation}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {83-86}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.61006.1442}, abstract = {The treatment using UV radiation and photons has more energy and can have important and often profound effects on the properties of path detectors behind electrons or other particles that they may not be able to monitor.The effect of the UV radiation is studied to investigate the optical properties of CR-39 polymer. The measurements of FTIR spectroscopy show maintenance of the main vibratory band resulting from the irradiation times. The optical absorption spectrum of UV / VS indicates main alteration in the optical energy gap with irradiation times. From the results, we found that by increasing the irradiation time of CR-39 by UV- lamp due to increase in the sensitivity of the detector and improvement of its properties thus due to the safe used of these detectors. FTIR spectra shows the conservation of the distinctive spectral peaks related to the monomer of polymer before and after exposing to different intensities of UV-lamp. From this results, the CR-39 detector ultraviolet irradiated were conformed to be very sensitive to UV radiation.}, keywords = {UV-Lamp,CR-39,Radiation,FTIR,UV visible spectroscopy}, url = {https://ajnsa.journals.ekb.eg/article_188905.html}, eprint = {https://ajnsa.journals.ekb.eg/article_188905_46ee97c6b0dad790134e1ee847821351.pdf} } @article { author = {Mounir, Rania and mohamed, maysa and El-Zaya, Mai}, title = {Thermal and Physico-Mechanical Properties of Irradiated Aluminum Oxide Filled Ethylene Propylene Diene Monomer Rubber Composites}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {87-93}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.62040.1444}, abstract = {Composites from ethylene propylene diene monomer (EPDM) rubber filled with different concentrations 20, 40, and 60 parts per hundred rubber (phr) of aluminum oxide (Al2O3) were prepared. The samples were vulcanized by gamma irradiation at doses (50,100, 150, and 200) kGy. The effects of irradiation doses and Al2O3 contents on the mechanical prorerties (particularly tensile strength, elongation at break % and hardness), physical properties (volume fraction and crosslinking density), thermal properties was studied by thermogravimetric analysis (TGA) and fire resistance was tested using Limiting Oxygen Index (LOI) and rate of burning methods of EPDM and its composites were studied. The results indicated that the improvement of mechanical as well as, physical properties occurred by increasing the concentration of Al2O3 (except the tensile strength values, where the highest values were obtained at concentration 20 phr Al2O3 in the composite irradiated at 100 kGy). The thermal stability and fire retardancy properties of the prepared composites were improved by increasing Al2O3 concentration. Generally, the addition of Al2O3 and gamma irradiation has improved composite’s performance. This is suitable for preparing products of rubber serving in dynamic conditions, with longer expected service life}, keywords = {aluminum oxide,Rubber,Physico-mechanical properties,Gamma Irradiation}, url = {https://ajnsa.journals.ekb.eg/article_188906.html}, eprint = {https://ajnsa.journals.ekb.eg/article_188906_89ffca887af776169feb1b0d3543619a.pdf} } @article { author = {Gul, Osman and Inan, Gokcen and Basaran, Hamit}, title = {Dosimetric comparison of different radiotherapy techniques to determine the absorbed fetal dose in pregnant patients with left-sided breast cancer}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {94-101}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.69536.1456}, abstract = {In our study, we aimed to measure the dose exposed by the fetus during three-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated radiotherapy (IMRT) treatment techniques in pregnant patients who had to undergo radiotherapy due to breast cancer with thermoluminescence dosimetry (TLD) and compare these measurements with treatment planning system (TPS). 2.5 mm- thick computed tomography (CT) images of Alderson Rando phantom device were taken for measurements. In order to compare the TPS and TLD readings in PTV, 60 TLDs were placed in the target volume in the Rando phantom. Twenty-four TLDs were placed in the 30th and 31st sections of the phantom, which is likely to be in the volumetric size of the first trimester of pregnancy which is also located 25.84 cm from the lower limit of the PTV. Six MV were used in seven different treatment techniques and the measurements were repeated 5 times for each technique and averaged. Fetal doses for all treatment techniques in TPS were found as 0.00 cGy. However, TLD measurements were measured between 3.36 ± 0.19 cGy and 16.10 ± 2.04. In 3D-CRT treatment technique the fetus received the lowest dose. In addition, for plans made using the IMRT method, it is seen that the MSS-IMRT technique provides better fetal protection compared to the SW-IMRT technique. The 3D-CRT should be the first priority for a pregnant patient who has to undergo left breast RT, but if the desired dose-volume histogram (DVH) cannot be obtained with 3D-CRT, 5 MSS-IMRT technique may be preferred.}, keywords = {Thermoluminescence Dosimetry,Pregnancy,breast cancer,radiation therapy,fetal dose}, url = {https://ajnsa.journals.ekb.eg/article_188907.html}, eprint = {https://ajnsa.journals.ekb.eg/article_188907_89c734a2374cfcd7c47733731e3518f9.pdf} } @article { author = {ALRAMLAWY, SHABAN and Maamoun, Eslam}, title = {Estimation of effective doses of radiation for patients with novel Coronavirus Disease Undergoing Chest CT scans.}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {102-108}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.72242.1463}, abstract = {ABSTRACT Evaluating the hazards and beneficiary of the chest - CT imaging for patients of COVID-19 Subjects and Methods: - A total number of 160 suspected Covid-19 patients were classified into four groups (GP1(n=40) ,GP2(n=40) and GP3(n=40)). The groups undergoing CT chest examination (Toshiba, Activion 16) .The acquisition protocols for the different groups were as follows: GP 1 ((n=40), 100 Kv , 160 ±15 mAs , GP2 ((n=40) , 120 Kv , 150 ±20 mAs) , GP3((n=40) , were 120 Kv Sure Exposure (SE), GP4((n=40) , 100 Kv , Sure Exposure (SE)) . and the other parameters are (pitch=1.5; rotation time=0.75 sec; matrix size 512x512), All images were reconstructed by Filtered Back Projection. Results:- The CTDI volume for the different groups were: (GP1: 7.8±0.09 mGy ; GP2: 26.4 ±0.25mGy; GP3: 16.8 ±4.7mGy; GP4: 5.5±0.1mGy , P In contrast, CNR and SNR were insignificantly different (P>0.05) among all groups. GP1and GP4 has a highly significant noise (P<0.05), in comparison with GP2 and GP3. Conclusion: The study demonstrates that chest CT performed with 100 kV protocol and dose modulation (}, keywords = {Effective doses,COVID19,Image Quality,CTCHEST}, url = {https://ajnsa.journals.ekb.eg/article_188908.html}, eprint = {https://ajnsa.journals.ekb.eg/article_188908_67f48ccbee6b7a7e4e341a2ab28c5171.pdf} } @article { author = {Afifi, Sofia}, title = {Overview on Uranium with Emphasis on Surficial Uranium Deposits in Egypt}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {109-125}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.79882.1477}, abstract = {This overview addresses uranium ore deposition and classification, mining and refining of uranium are briefly given. The main properties of primary and secondary uranium minerals are reported. The surficial uranium deposits account for approximately 4% of world uranium resources, defined as young uraniferous sediments and soils - Tertiary to Recent - near surface. The major controlling factors effect the world distribution of surficial uranium deposits are reported in details such as : climate, source, Tectonic as controlling factor led difference in relief topography and basin configuration, morphology, stratigraphy, permeability and porosity, tectonics, source and transport, mineralogy and geochemistry, evaporation processes and the interaction between basement source carrying waters and evaporative vertical. Micro- organisms which play an important roles and responsible for predominance of anaerobic bacteria controlling and enriching the U- bearing minerals (Bio- enrich). Finally, comprehensive outline on surficial depositions in Egypt is given, reviewed examples in Egypt, suggest the strong probability of surficial uranium existence (Bahariya, Sitra lakes, Fayium, Tushki basins and Ras Shukeir), moreover the Siwa oasis can represent indicative recent simulator for formation processes. Presence of carnotite in Sinai support the prevalence of similar controlling factors governs the Australia examples}, keywords = {Keywords :Uranium,primary,secondary,Surficial deposits,controlling factors,Egypt}, url = {https://ajnsa.journals.ekb.eg/article_188909.html}, eprint = {https://ajnsa.journals.ekb.eg/article_188909_e7696c698184860abc1dbd7aae2a4966.pdf} } @article { author = {Mansour, Nabil and Hassan, Ahmed and Ibrahim, Omyma and Waheed, Abdel Aziz}, title = {Study of Mechanical Properties and Wear Resistance of Pure Aluminium / TZ-3Y20A Composites}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {126-132}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.66693.1453}, abstract = {The composite materials studied in this work were pure Aluminium reinforced by TZ-3Y20A particles with different percentage 0,5,10,15 and 20 weight percent. The particle size of TZ-3Y20A was 25µm. The starting materials were examined by SEM, and XRD techniques and optical microscopy. Spherical shape is observed for TZ-3Y20A powder and irregular shape particles were observed for Al powder. SEM photos also, show the shape of, 0%, 5% 10%, 15 and 20% Al- TZ-3Y20A powder milled for 24hr particle powder where the mixed powder became smaller and irregular for percentage of TZ-3Y20A powder increasing. The composite materials were investigated by hardness test which reveal the increase of hardness as the particles percentage increase. The results show that an increase in ultimate tensile strength in specimen with TZ-3Y20A particles, then a decrease in ultimate tensile strength as the percentage of TZ-3Y20A particles increase. The wear test reveals an increase in wear resistance as TZ-3Y20A particles percentage increase.}, keywords = {Composite materials,pure Aluminium powder,Aluminium reinforced by TZ-3Y20A particle,Wear test,X-Ray Radiography}, url = {https://ajnsa.journals.ekb.eg/article_189496.html}, eprint = {https://ajnsa.journals.ekb.eg/article_189496_0609f1a03fea46b735955d90264cfe13.pdf} } @article { author = {NAWWAR, NADIA and Kasban, Hany and salama, may}, title = {Improvement of confusion matrix for Hand Vein Recognition Based On Deep- Learning multi-classifier Decisions}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {133-146}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.70450.1460}, abstract = {In this paper, recognition of the hand vein patterns approach is proposed employing the Convolutional Neural Network (CNN). This approach is routinely well-learned in what way to get features from the main pattern using Region of Interest (ROI). Though, the poor quality of the hand vein image still attitudes an unlimited strain to the extension leads of its usability. Firstly, by applying the method of Generative adversarial networks (GAN) data augmentation the performance gain of adding GAN generated data exceeds that of adding more true images, and apply ROI in a hand vein image feature extraction is studied initially. Secondly, the suggested approach is tested on the data sets of hand veins to decrease the overfitting in the fully connecting layer of CNN which this model proves the most effective one. In total, 1575 hand vein images from 100 subjects are applied to authorize the proposed approach for hand vein. A high accuracy (>99.8%) and low False Rejection Rate(FRR) (<0.99%) were achieved by applying the suggested approach, when compared with the existing CNN classifiers, indicating the efficiency of the suggested approach.}, keywords = {Biometric,Hand vein,CNN,GaN,FAR,FRR,and confusion matrix}, url = {https://ajnsa.journals.ekb.eg/article_189498.html}, eprint = {https://ajnsa.journals.ekb.eg/article_189498_8407373b01efed4627961385865bc6c4.pdf} } @article { author = {Hassan, Sherihan and aly, arafa and Elshahat, Khaled and Eissa, Mostafa}, title = {Dosimetric evaluation of physical parameters for different energies in advance radiotherapy technique for Liver cancer}, journal = {Arab Journal of Nuclear Sciences and Applications}, volume = {54}, number = {4}, pages = {147-156}, year = {2021}, publisher = {Egyptian Society of Nuclear Sciences and Applications (ESNSA)}, issn = {1110-0451}, eissn = {2090-4258}, doi = {10.21608/ajnsa.2021.60437.1441}, abstract = {ABSTRACT Introduction: This work aimed to study dosimetrically compare 6MV, 10MV and dual energies (DE) photon beam energies in liver cancer, evaluating the effect of using different of energies on intensity-modulated radiation (IMR) outcome were selected.IMRT treatment plans Identical optimization constraints were applied for all energy plans. The parameters like beam angle, number of beams, were kept constant to achieve the same clinical objectives. Both qualitative and quantitative methods were used. many physical indices for Planning Target Volume (PTV), the relevant Organs at Risk (OARs) as mean dose (Dmean), maximum dose (Dmax), 95% dose (D95), integral dose, total number of segments, and also the number of monitor unit (MU) were applied. Materials and methods: 28 virtual IMRT treatment planning were involved in this study. Step-and-shoot IMRT treatment plans were designed. Plans depended on Monaco (IMRT) treatment plan outcome. For each case, three plans with the same beam geometry were created using 6 MV, 10 MV and DE. For dual energy plans, all cases were optimized with identical planning objectives and normalized such 98% of the target received 100% of prescription dose. Results: The three techniques showed comparable PTV inhomogeneity and conformity for all patient’s differences within the median values <0.6%10 MV and DE plans also additionally a statistically important reduction in the total number of monitor units (MU) of 14.2% (p <0.01) and 13.3% (p <0.01) as compared to 6 MV, respectively. Conclusion: Each dual energy and 10 MV energy had similar PTV dosimetry characteristics.}, keywords = {6-MV, 10-MV, Double Photon Energies,Intensity-Modulated Radiation Therapy (IMRT) photon energy, cancer}, url = {https://ajnsa.journals.ekb.eg/article_195502.html}, eprint = {https://ajnsa.journals.ekb.eg/article_195502_7300077a465a8124b5c40602ef7e727c.pdf} }