Pub Date : 2024-04-01DOI: 10.21608/ajnsa.2024.244002.1787
Sabry Mahmoud, Mohsen El-Bendary, Hany Kasban
Nano-scale technologies have gained significant attention in various industries, including the nuclear field, due to their unique properties and potential benefits such as miniaturization and improved performance, radiation-hardened electronics, sensors, and detectors. This paper studies the performance of the different Nano-scale technologies in electronic elements fabrication using the different Full Adder (FA) circuits with respect to different realizing methods. Four main parameters; delay time, consumed power, simplicity of hardware (number of transistors),and Power Delay Product (PDP) have been used for evaluating the different FA circuits efficiency in 45nm and 65 nm Nano-technologies and utilizing the Complementary Pass-Transistor Logic (CPL), Complementary Metal-Oxide-Semiconductor (C-MOS), Full-Swing Gate Diffusion Input (FS-GDI) hybrid approaches. The experiments are carried out using a simulator package (Cadence Virtuoso) for 65nm nanotechnology. The results revealed the performance of the FA circuits at the lower Nano-scale performed better than the higher nanoscale. C-MOS approaches provide better improvement in the 45 nm technology compared to the 65 nm technology and the other realizing approaches.
{"title":"Performance Enhancing of Nano-scale Technologies in Nuclear Applications Using C-MOS and FS-GDI Hybrid Approach","authors":"Sabry Mahmoud, Mohsen El-Bendary, Hany Kasban","doi":"10.21608/ajnsa.2024.244002.1787","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.244002.1787","url":null,"abstract":"Nano-scale technologies have gained significant attention in various industries, including the nuclear field, due to their unique properties and potential benefits such as miniaturization and improved performance, radiation-hardened electronics, sensors, and detectors. This paper studies the performance of the different Nano-scale technologies in electronic elements fabrication using the different Full Adder (FA) circuits with respect to different realizing methods. Four main parameters; delay time, consumed power, simplicity of hardware (number of transistors),and Power Delay Product (PDP) have been used for evaluating the different FA circuits efficiency in 45nm and 65 nm Nano-technologies and utilizing the Complementary Pass-Transistor Logic (CPL), Complementary Metal-Oxide-Semiconductor (C-MOS), Full-Swing Gate Diffusion Input (FS-GDI) hybrid approaches. The experiments are carried out using a simulator package (Cadence Virtuoso) for 65nm nanotechnology. The results revealed the performance of the FA circuits at the lower Nano-scale performed better than the higher nanoscale. C-MOS approaches provide better improvement in the 45 nm technology compared to the 65 nm technology and the other realizing approaches.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140781206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.21608/ajnsa.2024.251593.1795
Mohamed Elsaied, Ahmed Ali, Nader Abdelhaleem
This paper presents the work carried out during the first year of the research contract No. 24284 titled “accuracy evaluation of available fission yield data and updating” under the umbrella of the Coordinated Research Project (CRP): “updating fission yield data for applications” organized by the International Atomic Energy Agency (IAEA) with the main objective of updating the evaluated independent and cumulative fission yield data for U-235, U-238, and Cf-252. In this research, the latest ENDF/B-VIII.0 and JEFF3.3 data libraries that were released in 2018 and 2017, respectively, as well as the ENDF/B-VII.1 data library, were tested on the ETRR-2 using WIMS-5B/CITVAP computational codes. Since the reactor criticality calculations are very sensitive to the accuracy of the data libraries, criticality benchmarks were selected in the work for the evaluation of these libraries. The results showed that the JEFF3.3 library has better agreement with the measurements than the ENDF/B-VIII.0 library. But the ENDF/B-VIII.0 library result is within the accepted range.
{"title":"Comparison of ENDF/B-VII.1, ENDF/B-VIII.0, and JEFF 3.3 Nuclear Data Libraries on Criticality Calculation Using WIMS/CITVAP Code","authors":"Mohamed Elsaied, Ahmed Ali, Nader Abdelhaleem","doi":"10.21608/ajnsa.2024.251593.1795","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.251593.1795","url":null,"abstract":"This paper presents the work carried out during the first year of the research contract No. 24284 titled “accuracy evaluation of available fission yield data and updating” under the umbrella of the Coordinated Research Project (CRP): “updating fission yield data for applications” organized by the International Atomic Energy Agency (IAEA) with the main objective of updating the evaluated independent and cumulative fission yield data for U-235, U-238, and Cf-252. In this research, the latest ENDF/B-VIII.0 and JEFF3.3 data libraries that were released in 2018 and 2017, respectively, as well as the ENDF/B-VII.1 data library, were tested on the ETRR-2 using WIMS-5B/CITVAP computational codes. Since the reactor criticality calculations are very sensitive to the accuracy of the data libraries, criticality benchmarks were selected in the work for the evaluation of these libraries. The results showed that the JEFF3.3 library has better agreement with the measurements than the ENDF/B-VIII.0 library. But the ENDF/B-VIII.0 library result is within the accepted range.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140778477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.21608/ajnsa.2024.250682.1794
Khaled Sallam, Hoda Abdelrahman, Ossama Abd El-kawy
Labeling techniques of adrenocorticotropic hormone (ACTH) were described in details. Comparative study was constructed between all tracers that prepared using different oxidizing agents included chloramine-T, iodogen, N-bromosuccinimide and lactoperoxidase & urea-H 2 O 2 . The radioisotope of 125 I was used in radiolabeling as Na 125 I in liquid phase. All tracers were purified using PD-10 column and the radiochemical purity was evaluated using paper chromatography electrophoreses charts. Specific activities of tracers were calculated in µCi/µg. The shelf life of tracers in days were determined whereas the validity of radioimmunoassay (RIA) kit will required this factor. Immunoreactivity was examined using polyclonal antibody through RIA liquid phase technique. Maximum binding specific percent and binding nonspecific percent were evaluated. Displacement percent was calculated using minimum and maximum binding values. All the results obtained were used in comparative study included all types of tracers. The results show iodogen was preferred as oxidizing agent than chloramine-T and N-bromosuccinimide. On the other hand enzyme lactoperoxidase was filled completely as oxidizing agent. Because the iodogen is insoluble in water , it can be easily remove from the reaction mixture at the end of reaction without using reducing agent.
详细介绍了促肾上腺皮质激素（ACTH）的标记技术。对使用不同氧化剂制备的所有示踪剂进行了比较研究，这些氧化剂包括氯胺-T、碘原、N-溴琥珀酰亚胺和乳过氧化物酶及脲-H 2 O 2。125 I 的放射性同位素在液相中以 Na 125 I 的形式进行放射性标记。所有示踪剂均使用 PD-10 柱纯化，并使用纸层析电泳图表评估放射化学纯度。示踪剂的比活度以 µCi/µg 为单位计算。以天为单位确定示踪剂的保存期限，而放射免疫分析（RIA）试剂盒的有效性则需要这一因素。使用多克隆抗体通过 RIA 液相技术检测免疫活性。评估了最大结合特异性百分比和结合非特异性百分比。使用最小和最大结合值计算置换率。获得的所有结果都用于比较研究，包括所有类型的示踪剂。结果显示，碘原作为氧化剂优于氯胺-T 和 N-溴代琥珀酰亚胺。另一方面，乳过氧化物酶完全可以作为氧化剂。由于碘原不溶于水，因此在反应结束时可以很容易地从反应混合物中去除碘原，而无需使用还原剂。
{"title":"Studies on the Labeling of Adrenocorticotropic Hormone (ACTH) by 125I Using Different Oxidizing Agents for Radioimmunoassay Purposes","authors":"Khaled Sallam, Hoda Abdelrahman, Ossama Abd El-kawy","doi":"10.21608/ajnsa.2024.250682.1794","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.250682.1794","url":null,"abstract":"Labeling techniques of adrenocorticotropic hormone (ACTH) were described in details. Comparative study was constructed between all tracers that prepared using different oxidizing agents included chloramine-T, iodogen, N-bromosuccinimide and lactoperoxidase & urea-H 2 O 2 . The radioisotope of 125 I was used in radiolabeling as Na 125 I in liquid phase. All tracers were purified using PD-10 column and the radiochemical purity was evaluated using paper chromatography electrophoreses charts. Specific activities of tracers were calculated in µCi/µg. The shelf life of tracers in days were determined whereas the validity of radioimmunoassay (RIA) kit will required this factor. Immunoreactivity was examined using polyclonal antibody through RIA liquid phase technique. Maximum binding specific percent and binding nonspecific percent were evaluated. Displacement percent was calculated using minimum and maximum binding values. All the results obtained were used in comparative study included all types of tracers. The results show iodogen was preferred as oxidizing agent than chloramine-T and N-bromosuccinimide. On the other hand enzyme lactoperoxidase was filled completely as oxidizing agent. Because the iodogen is insoluble in water , it can be easily remove from the reaction mixture at the end of reaction without using reducing agent.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140783142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.21608/ajnsa.2024.250145.1793
omaima Hussein, amal Abdelkadr
.
.
{"title":"Metabolomics Profiling of Chilled (Coriandrum sativum L.) Primed by Silicate, Humic acid and Gamma Radiation","authors":"omaima Hussein, amal Abdelkadr","doi":"10.21608/ajnsa.2024.250145.1793","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.250145.1793","url":null,"abstract":".","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140784148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.21608/ajnsa.2024.261812.1801
hala ramadan, M. El-Amir, Mohamed Abd El-Hamid, mohamed El-Absy
The study investigated the adsorption behavior of molybdate on acidic alumina at different pH values, contact times, initial molybdenum concentrations, and reaction temperatures. The batch capacity of the commercial acidic alumina was determined by batch method at 25 o C from 0.005 M sodium molybdate solution and was found to be 45 mg /g. The sorption data was fitted to the Freundlich, Langmuir, and Dubinin-Radushkevich (D-R) sorption isotherms, and the mean sorption energy was found to be 9.243 kJ/mol. For the kinetic analysis, the Lagergren equation was applied, and the pseudo-second-order kinetic model offered excellent data fitting for molybdenum uptake. The standard enthalpy was found to be -6.2 kJ/mol after calculating the thermodynamic constants. The calculated ∆G° were - 12.42, -12.635, and - 13.126 kJ mol -1 at all experimental temperatures. While the standard entropy was found to be 20.67 J mol -1 . The results show that the sorption process is exothermic and spontaneous, with a higher degree of ion freedom.
{"title":"Sorption behavior of Molybdenum (IV) onto commercial acidic alumina surface","authors":"hala ramadan, M. El-Amir, Mohamed Abd El-Hamid, mohamed El-Absy","doi":"10.21608/ajnsa.2024.261812.1801","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.261812.1801","url":null,"abstract":"The study investigated the adsorption behavior of molybdate on acidic alumina at different pH values, contact times, initial molybdenum concentrations, and reaction temperatures. The batch capacity of the commercial acidic alumina was determined by batch method at 25 o C from 0.005 M sodium molybdate solution and was found to be 45 mg /g. The sorption data was fitted to the Freundlich, Langmuir, and Dubinin-Radushkevich (D-R) sorption isotherms, and the mean sorption energy was found to be 9.243 kJ/mol. For the kinetic analysis, the Lagergren equation was applied, and the pseudo-second-order kinetic model offered excellent data fitting for molybdenum uptake. The standard enthalpy was found to be -6.2 kJ/mol after calculating the thermodynamic constants. The calculated ∆G° were - 12.42, -12.635, and - 13.126 kJ mol -1 at all experimental temperatures. While the standard entropy was found to be 20.67 J mol -1 . The results show that the sorption process is exothermic and spontaneous, with a higher degree of ion freedom.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140773507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.21608/ajnsa.2024.242186.1782
Ayman Massoud, Fatma Adou, Mohamed Youssif, Wael Badway, Karam Allan
.
.
{"title":"Trace Elements Characterization in Rocks Using Neutron Activation Analysis, Northwestern Coast, Ras El-Hekma–Egypt","authors":"Ayman Massoud, Fatma Adou, Mohamed Youssif, Wael Badway, Karam Allan","doi":"10.21608/ajnsa.2024.242186.1782","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.242186.1782","url":null,"abstract":".","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140784161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Micronutrients are essentially as important as macronutrients to improve growth, yield and quality in plants, especially when growing in reclaimed lands. Onion was grown on sandy soil under field conditions and exposed to different rates of Fe, Mn, Cu and Zn either individually or in combination of them in order to follow up its impact on some growth traits, micronutrients uptake and nitrogen derived from mineral-N fertilizer, phosphorus and potassium uptake by whole plant. Two successive field experiments were carried out during winter seasons of 2019-2020 and 2020-2021 under drip irrigation system. Sprayed individual Fe, Mn, Cu, Zn and combination of them were applied in different rates. Experiments were designed in a split-plot design. Micronutrients mixture added at medium concentration induced the highest plant height, number of leaves, fresh and dry weight, blub yield and quality, bulb diameter, total soluble solids, ascorbic acid concentration, macro and micronutrient uptake, nitrogen (as 15 N) derived from fertilizer and fertilizer nitrogen (as 15 N) recovery. Additionally, zinc treatment came to the next after the mixed solution in increasing all tested parameters, followed by individual iron, then manganese, and finally copper.
微量营养元素在提高植物的生长、产量和质量方面与宏量营养元素同样重要，尤其是在开垦的土地上生长时。在田间条件下，洋葱生长在沙质土壤中，并单独或混合施用不同比例的铁、锰、铜和锌，以跟踪其对某些生长性状、微量营养元素吸收以及全株对矿物氮肥中的氮、磷和钾吸收的影响。在 2019-2020 年和 2020-2021 年冬季，在滴灌系统下连续进行了两次田间试验。喷洒的铁、锰、铜、锌和它们的组合以不同的比例施用。实验采用分小区设计。以中等浓度添加的微量营养元素混合物诱导出了最高的株高、叶片数、鲜重和干重、茎秆产量和质量、鳞茎直径、总可溶性固形物、抗坏血酸浓度、宏量营养元素和微量营养元素吸收率、肥料氮（以 15 N 计）和肥料氮（以 15 N 计）回收率。此外，在提高所有测试参数方面，锌处理排在混合溶液之后，其次是单质铁，然后是锰，最后是铜。
{"title":"Impact of Spraying with Some Micronutrients on Onion (Allium Cepa L.) Yield and Nutrients Uptake with Application of 15N","authors":"Tarek El- Sherbeny, Mohamed Hashim hussein, Mohamed Hekal","doi":"10.21608/ajnsa.2024.254765.1798","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.254765.1798","url":null,"abstract":"Micronutrients are essentially as important as macronutrients to improve growth, yield and quality in plants, especially when growing in reclaimed lands. Onion was grown on sandy soil under field conditions and exposed to different rates of Fe, Mn, Cu and Zn either individually or in combination of them in order to follow up its impact on some growth traits, micronutrients uptake and nitrogen derived from mineral-N fertilizer, phosphorus and potassium uptake by whole plant. Two successive field experiments were carried out during winter seasons of 2019-2020 and 2020-2021 under drip irrigation system. Sprayed individual Fe, Mn, Cu, Zn and combination of them were applied in different rates. Experiments were designed in a split-plot design. Micronutrients mixture added at medium concentration induced the highest plant height, number of leaves, fresh and dry weight, blub yield and quality, bulb diameter, total soluble solids, ascorbic acid concentration, macro and micronutrient uptake, nitrogen (as 15 N) derived from fertilizer and fertilizer nitrogen (as 15 N) recovery. Additionally, zinc treatment came to the next after the mixed solution in increasing all tested parameters, followed by individual iron, then manganese, and finally copper.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140791753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-01DOI: 10.21608/ajnsa.2023.243050.1784
A. Abdelmoghies, Motaz Elsehrawy, Abeer Zakaria, Shimaa Fahmy
Endophytic bacteria are promising source of plant probiotics due to their ability to promote plant growth and control pathogens. This study aims to isolate diverse endophytic bacteria capable of boosting plant growth and controlling pathogens. A total of 62 endophytic bacteria were isolated from the stems, leaves and roots of the flowering plant ( Matthiola incana ) , the potato plant ( Solanum tuberosum ) , the Prickly pear plant ( Opuntia-ficus indica ) , and seedlings of Acacia sp. trees. Endophytic bacterial isolates were screened for their production of indole acetic acid (IAA) and cellulase enzyme, as well as their antagonistic activities against potato pathogens such as Ralstonia solanacearum and Fusarium oxysporum . The most promising endophytic isolates ML7 and PL10 showed the highest productivity of IAA, 69.1 and 64.8 µg/ml respectively. They also exhibited high cellulase activities on Congo red plates showing clear zone/colony diameters ratios of 3.36 and 2.8 respectively. The antagonistic activities of ML7 and PL10 against R. solanacearum were represented as 6 and 16 mm inhibition zones diameters, while the inhibition zones diameters representing the antagonistic activities of ML7 and PL10 against F. oxysporum were 58 and 7 mm , respectively. Isolates ML7 and PL10 exhibited a good ability to survive in a broad range of temperatures from 15 to 45 °C and upon exposure to direct UV radiation for 3 hours. Finally, isolates ML7 and PL10 were identified as Achromobacter marplatensis and Bacillus velezensis , respectively. Therefore, it is highly recommended that they can be used as plant probiotics in future field studies.
{"title":"Isolation of Potent Endophytic Bacteria Able to Boost Plant Growth and Control Pathogens.","authors":"A. Abdelmoghies, Motaz Elsehrawy, Abeer Zakaria, Shimaa Fahmy","doi":"10.21608/ajnsa.2023.243050.1784","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.243050.1784","url":null,"abstract":"Endophytic bacteria are promising source of plant probiotics due to their ability to promote plant growth and control pathogens. This study aims to isolate diverse endophytic bacteria capable of boosting plant growth and controlling pathogens. A total of 62 endophytic bacteria were isolated from the stems, leaves and roots of the flowering plant ( Matthiola incana ) , the potato plant ( Solanum tuberosum ) , the Prickly pear plant ( Opuntia-ficus indica ) , and seedlings of Acacia sp. trees. Endophytic bacterial isolates were screened for their production of indole acetic acid (IAA) and cellulase enzyme, as well as their antagonistic activities against potato pathogens such as Ralstonia solanacearum and Fusarium oxysporum . The most promising endophytic isolates ML7 and PL10 showed the highest productivity of IAA, 69.1 and 64.8 µg/ml respectively. They also exhibited high cellulase activities on Congo red plates showing clear zone/colony diameters ratios of 3.36 and 2.8 respectively. The antagonistic activities of ML7 and PL10 against R. solanacearum were represented as 6 and 16 mm inhibition zones diameters, while the inhibition zones diameters representing the antagonistic activities of ML7 and PL10 against F. oxysporum were 58 and 7 mm , respectively. Isolates ML7 and PL10 exhibited a good ability to survive in a broad range of temperatures from 15 to 45 °C and upon exposure to direct UV radiation for 3 hours. Finally, isolates ML7 and PL10 were identified as Achromobacter marplatensis and Bacillus velezensis , respectively. Therefore, it is highly recommended that they can be used as plant probiotics in future field studies.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139392734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-01DOI: 10.21608/ajnsa.2023.249441.1792
Saleh El Hady
The separation of ytrrium and dysprosium from the REEs product (48.15% Y 2 O 3 , 11.05% Dy 2 O 3 ) obtained from a xenotime mineral concentrate was studied. The REEs chloride liquor is prepared followed by precipitation of yttrium using lactic acid. The optimum conditions of the yttrium precipitation included 2 M lactic acid concentration, lactic acid pH 5 with L (REEs solution) /L (lactic acid) 1/0.75 at contact time of 168 h at 25 o C. The extraction of dysprosium from Y-free REE chloride solution was investigated using PC88A (2-Ethylhexyl 2-ethylhexy phosphonic acid). The optimal conditions of the dysprosium extraction were an extractant concentration of 2.2 M, 1/1 O/A ratio in a chloride solution at pH 3, and 9 min., as contact time. While the optimal conditions of its stripping considered 1.5 M H 2 SO 4 in 1/1 O/A ratio for 20 min., as stripping time. Ultrapure products of Y and Dy were prepared and analyzed using ICP-MS.
研究了从氙精矿中获得的 REEs 产品（48.15% Y 2 O 3，11.05% Dy 2 O 3）中分离钇和镝的方法。在制备 REEs 氯化液后，使用乳酸沉淀钇。钇沉淀的最佳条件包括乳酸浓度为 2 M，乳酸 pH 值为 5，L（REEs 溶液）/L（乳酸）为 1/0.75，接触时间为 168 h，温度为 25 o C。镝萃取的最佳条件是：萃取剂浓度为 2.2 M，氯化溶液的 pH 值为 3，萃取剂的 O/A 比例为 1/1，接触时间为 9 分钟。而萃取镝的最佳条件是在 1/1 O/A 比例的 1.5 M H 2 SO 4 溶液中，萃取时间为 20 分钟。制备了 Y 和 Dy 的超纯产品，并使用 ICP-MS 进行了分析。
{"title":"\"Individual Separation of Yttrium and Dysprosium Oxides from the Rare Earths Product obtained from Xenotime Mineral Concentrate\"","authors":"Saleh El Hady","doi":"10.21608/ajnsa.2023.249441.1792","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.249441.1792","url":null,"abstract":"The separation of ytrrium and dysprosium from the REEs product (48.15% Y 2 O 3 , 11.05% Dy 2 O 3 ) obtained from a xenotime mineral concentrate was studied. The REEs chloride liquor is prepared followed by precipitation of yttrium using lactic acid. The optimum conditions of the yttrium precipitation included 2 M lactic acid concentration, lactic acid pH 5 with L (REEs solution) /L (lactic acid) 1/0.75 at contact time of 168 h at 25 o C. The extraction of dysprosium from Y-free REE chloride solution was investigated using PC88A (2-Ethylhexyl 2-ethylhexy phosphonic acid). The optimal conditions of the dysprosium extraction were an extractant concentration of 2.2 M, 1/1 O/A ratio in a chloride solution at pH 3, and 9 min., as contact time. While the optimal conditions of its stripping considered 1.5 M H 2 SO 4 in 1/1 O/A ratio for 20 min., as stripping time. Ultrapure products of Y and Dy were prepared and analyzed using ICP-MS.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139395982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-01DOI: 10.21608/ajnsa.2023.245510.1788
Elsayeda F. Salem, Mogahed Alabyad, Adel ali
The biggest threat to national security is the use of radiological dispersion devices (RDDs) in terrorist attacks. Known as a dirty bomb, RDD is an explosive device combined with radioactive material. In addition to posing an immediate risk to people's lives and property, the explosion contaminates a large area with radioactivity. Decontamination is expensive and time-consuming. limited radiation exposure may result in long-term health issues, psychological issues, and social repercussions. Depending on the kind of radioactive material used and how well it is dispersed, an RDD can have different effects. This work aims to assess the radiological risk resulting from direct exposure to radiation sources used in radiation dose distributions as well as related legal issues. Using the Hot-spot computer code, simulations were run for radiation sources of 137 Cs and 90 Sr. To simulate radiological effects and ground deposition, calculations for radioactive material dispersion models are being carried out, considering the worst-case scenario. The parameters for ground surface deposition, ground shine dose rate, and total effective dose equivalent change as one gets farther away from the radiation source. Examined are the effects of variables like location, wind speed, radiological risk, and emergency response. There have been comparisons made between the radioactive material dispersion model and the considered radiation sources. Legal issues are also deliberated within the context of both national framework and international law.
{"title":"Radiological risk and legal issues analysis for Terrorism attack scenario Using Radiological Dispersion Devices.","authors":"Elsayeda F. Salem, Mogahed Alabyad, Adel ali","doi":"10.21608/ajnsa.2023.245510.1788","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.245510.1788","url":null,"abstract":"The biggest threat to national security is the use of radiological dispersion devices (RDDs) in terrorist attacks. Known as a dirty bomb, RDD is an explosive device combined with radioactive material. In addition to posing an immediate risk to people's lives and property, the explosion contaminates a large area with radioactivity. Decontamination is expensive and time-consuming. limited radiation exposure may result in long-term health issues, psychological issues, and social repercussions. Depending on the kind of radioactive material used and how well it is dispersed, an RDD can have different effects. This work aims to assess the radiological risk resulting from direct exposure to radiation sources used in radiation dose distributions as well as related legal issues. Using the Hot-spot computer code, simulations were run for radiation sources of 137 Cs and 90 Sr. To simulate radiological effects and ground deposition, calculations for radioactive material dispersion models are being carried out, considering the worst-case scenario. The parameters for ground surface deposition, ground shine dose rate, and total effective dose equivalent change as one gets farther away from the radiation source. Examined are the effects of variables like location, wind speed, radiological risk, and emergency response. There have been comparisons made between the radioactive material dispersion model and the considered radiation sources. Legal issues are also deliberated within the context of both national framework and international law.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139393880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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