Arab Journal of Nuclear Sciences and Applications最新文献

Searching for Nuclei Exhibiting the Critical Point Symmetry X(4) 寻找显示临界点对称性 X(4) 的原子核

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-07-01 DOI: 10.21608/ajnsa.2024.288521.1817

M. Abdel-Mageed, M. Abdel-Mageed

引用次数: 0

Proposed New Different Coincidence Neutron Detection Systems using Monte Carlo Simulation. 利用蒙特卡洛模拟提出的新型不同共发中子探测系统。

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-07-01 DOI: 10.21608/ajnsa.2024.287054.1814

R. El-Tayebany, Mootaz Ebied Shalaf

引用次数: 0

Low-dose gamma radiation controls let -7a and miR-21 in a solid tumor model. 低剂量伽马辐射可控制实体肿瘤模型中的let-7a和miR-21。

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-07-01 DOI: 10.21608/ajnsa.2024.294634.1824

Asmaa Hassan, somaya A mansour, Azza M. El-Bahkery

{"title":"Low-dose gamma radiation controls let -7a and miR-21 in a solid tumor model.","authors":"Asmaa Hassan, somaya A mansour, Azza M. El-Bahkery","doi":"10.21608/ajnsa.2024.294634.1824","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.294634.1824","url":null,"abstract":"Cyclophosphamide and doxorubicin are often used as chemotherapy in Cancer treatment. However, these medications can cause harmful side effects, which may lead to disease progression. To address this issue, this study was conducted to evaluate the effect of combining cyclophosphamide and doxorubicin chemotherapy with low-dose gamma irradiation on the immune response and antitumor efficacy in a tumor mass animal model. Ehrlich ascites carcinoma cells (EAC) were implanted intramuscularly in the right thigh of female albino mice. The mice were then treated with doxorubicin (D) at a dose of 10 mg/kg body weight once a week for four weeks, and low-dose gamma radiation (0.25 Gy) (LDR) in the third and fourth weeks. The current study discovered that radiation might regulate angiogenesis and proliferation in solid tumors more effectively than cyclophosphamide and doxorubicin by themselves. considerable regulation of miR-21 and Let-7a fold change.Additionally, heat shock proteins 70 and 90 were decreased and the apoptosis marker caspase-3 was increased by the chemotherapy and radiation combination.These results suggest that low-dose gamma radiation combined with doxorubicin and/or cyclophosphamide might be a useful therapeutic regimen for the treatment of cancer.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141853952","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}

引用次数: 0

Analysis of Small Modular SMART Reactor Core Fuel Burn up using MCNPX code 使用 MCNPX 代码分析小型模块化 SMART 反应堆堆芯燃料燃烧情况

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-07-01 DOI: 10.21608/ajnsa.2024.290367.1819

Moustafa Aziz

引用次数: 0

Some Characteristics of Relativistic Secondary Charged Particles Produced in 7Li Interaction with Nuclear Emulsion 7Li 与核乳化作用中产生的相对论二次带电粒子的一些特征

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-07-01 DOI: 10.21608/ajnsa.2024.273671.1807

M. Mohery, A. Mindil, M. Farghaly, A.E. Elmeshneb

{"title":"Some Characteristics of Relativistic Secondary Charged Particles Produced in 7Li Interaction with Nuclear Emulsion","authors":"M. Mohery, A. Mindil, M. Farghaly, A.E. Elmeshneb","doi":"10.21608/ajnsa.2024.273671.1807","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.273671.1807","url":null,"abstract":"In the present work, the general characteristics of the interactions of 7 Li nuclei with nuclear emulsion at 3A GeV/c have been studied. The multiplicity of the charged secondary particles and the correlations among them are discussed. The average multiplicity, compound multiplicity, variation of the dispersion, and the variation of the average compound multiplicity with the different projectile and target mass numbers have been investigated. The outcomes demonstrate certain regularities in the interactions between 7 Li nuclei and emulsion nuclei, which were previously seen in tests involving lighter nuclei. The values of the average multiplicity of the secondary charged particles have been estimated, and the dependence of this average multiplicity on the mass number of the projectile has been analyzed. The impact parameter determines the average multiplicities of the secondary charged particles, which rise as the impact parameter decreases. The variation in average multiplicities of shower particles as a function of heavy ionizing particles has been discussed. The compound multiplicity has been shown to be a good kinematical parameter for studying the interaction between nuclei. The compound multiplicity's average value mostly rises as the projectile mass number does and with the target mass. The study of multiplicity correlations has shown that shower and grey particles are strongly correlated. The 7 Li interaction's experimental data have been methodically compared to other interactions at various energies; the new results are consistent with the corresponding results at almost the same energy. The results obtained in the current studies have been compared with those from hadron-nucleus collisions","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":"17 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844723","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}

引用次数: 0

The Nuclear EOS of PNM and sensitivity of Neutron Star Properties to modern NN Potentials PNM 的核 EOS 以及中子星特性对现代 NN 电位的敏感性

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-07-01 DOI: 10.21608/ajnsa.2024.290999.1820

AlaaEldeen Shaban Elmeshneb

引用次数: 0

Realizing the advantages of Replacing Lead with Tin in Bismuth-Lead Alloys for Improved Thermal and Nuclear Properties as Coolant 在铋铅合金中实现以锡代铅的优势，以改善作为冷却剂的热性能和核性能

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-07-01 DOI: 10.21608/ajnsa.2024.281619.1809

Samah Dahy, R. M. Elshazly, T. Z. Amer, N. Gomaa, A. A. Bahgat

引用次数: 0

Extension of Phase Variation, Higher Momentum Transfer Components, and Pauli Blocking effects on Reaction Cross Sections to Lower and Medium Energies 将相变、高动量传递成分和保利阻滞对反应截面的影响扩展到中低能量

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-04-01 DOI: 10.21608/ajnsa.2024.251756.1796

mahmoud Taha, samia esmail

引用次数: 0

Dynamic Performance Evaluation of N-channel MOSFET under Gamma Irradiation 伽马辐照下 N 沟道 MOSFET 的动态性能评估

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-04-01 DOI: 10.21608/ajnsa.2024.255055.1799

Abdelhameed Sharaf

{"title":"Dynamic Performance Evaluation of N-channel MOSFET under Gamma Irradiation","authors":"Abdelhameed Sharaf","doi":"10.21608/ajnsa.2024.255055.1799","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.255055.1799","url":null,"abstract":"In this manuscript, the experimental studies for two groups, 2N7000 and BS107, of N-channel MOSFET are conducted. Each group, which have two devices from the same type, is exposed to dosages of gamma-ray ionizing radiation. The main objective of this study is to discuss the dynamic performance of these types under low dose ionizing radiation for purpose of usage as a low dose radiation dosimeter. Novelty of this study arisen from that the dynamic parameters such as threshold voltage, rise and fall times, the transconductance and capacitance between different device terminals are investigated. Because of gamma-ray irradiation, the surface and interface charges are arisen into MOSFET region. The threshold voltage is dependent on the MOSFET parameters, as it depends reversely on the oxide capacitance. From the obtained results, the channel width and length play an important role for determining all the dynamic parameters. One can notice that the majority of capacitances values are decreased. Consequently, the threshold voltage is decreased with the increase of radiation dose. From outcomes, the different transconductance values have different comportment according to the channel width and length into these adjacent regions. Generally, it tends to degrade with increasing the gamma-ray irradiation dose. The rise time tends to decrease while fall time tends to increase semi-linearly with increasing dosage values. From digital processing point of view, small shift in the rise or fall time will affect the pulse decision and then the information processing. Finally, one can conclude that n-channel MOSFETs under study not only have a specified response to gamma-ray radiation but also, they give a deterministic performance over the range of dose in this study. Therefore, the n-channel MOSFET under study - for both type number and dose-is a candidate to be a low dose dosimeter for gamma-ray radiation. The obtained dynamic response will be very important for any recent space or ionizing radiation environment and applications","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":"149 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140758414","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}

引用次数: 0

Nitrogen ion beam radiation induced modification on physico-chemical properties of poly (vinyl chloride)/ethylene vinyl acetate blends 氮离子束辐射对聚（氯乙烯）/乙烯-醋酸乙烯共混物物理化学性能的影响

Arab Journal of Nuclear Sciences and Applications Pub Date : 2024-04-01 DOI: 10.21608/ajnsa.2024.253603.1797

EL Sayed Waly, Mohamed Shehata, ahmed abdel reheem, Hoda Hanafy, Zakaria Ismaiel

{"title":"Nitrogen ion beam radiation induced modification on physico-chemical properties of poly (vinyl chloride)/ethylene vinyl acetate blends","authors":"EL Sayed Waly, Mohamed Shehata, ahmed abdel reheem, Hoda Hanafy, Zakaria Ismaiel","doi":"10.21608/ajnsa.2024.253603.1797","DOIUrl":"https://doi.org/10.21608/ajnsa.2024.253603.1797","url":null,"abstract":"Poly (vinyl chloride) (PVC), ethylene vinyl acetate (EVA), and PVC/EVA (50/50 wt%) samples were synthesized using casting technique. The as-prepared samples were irradiated with various fluencies of nitrogen ion beam, using a broad beam cold cathode ion source. The structural, optical and thermal properties of pristine and irradiated samples were investigated using FTIR, XRD, UV-VIS, and TGA analytical techniques. FTIR and XRD investigation showed several changes in the crystal structure, intensity and position of the characteristic peaks for the investigated samples. The optical band gap energies for both PVC and EVA samples is being to decrease with increasing ion beam fluence, whereas 50/50 wt% PVC/EA blend sample exhibits an increment behavior as a result of increasing ion beam fluence. The thermal stability of ion beam bombarded samples decreased for PVC and EVA samples than that for pristine samples, whereas a noticeable increase in the stability of the 50/50 wt% PVC/EVA blend samples. It is clear that thermal decomposition is affected by nitrogen ion beam fluencies owing to the extent of crosslinking and degradation processes. The results showed that nitrogen ion beam bombardment significantly affect the physico-chemical properties of PVC, EVA, and PVC/EVA samples.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":"100 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140776738","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}

引用次数: 0