Pub Date : 2023-10-01DOI: 10.21608/ajnsa.2023.192679.1719
Magida Mamdouh, Sayda Ibrahim, Hussein Elnahas
By using the solution casting technique, blends of polystyrene and rosin (PS/rosin) plasticized by dibutyl phthalate (DBP) were created with various rosin content (5, 10, 20, and 30%). These blends were then exposed to various gamma radiation dosages (50, 100, 150, and 200 kGy). Scanning electron microscopy (SEM), and mechanical characteristics were used to analyze the mixes (PS/rosin). FTIR and SEM were used to demonstrate the two polymers' physical miscibility. TGA is used to study thermal properties. The TGA thermograms demonstrated that as the PS component ratio in the blend is increased, the thermal stability of the unirradiated polymer blends (PS/rosin) also increases. Additionally, it was shown that the PS polymer provides protection against radiation degradation and enhances their thermal stability additionally, it was determined that adding PS to rosin improved its tensile strength and other mechanical qualities. On the other hand, by increasing the proportion of rosin in the blend, elongation was reduced.
{"title":"Effect of gamma radiation on the characterization of polystyrene/rosin polymer blends.","authors":"Magida Mamdouh, Sayda Ibrahim, Hussein Elnahas","doi":"10.21608/ajnsa.2023.192679.1719","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.192679.1719","url":null,"abstract":"By using the solution casting technique, blends of polystyrene and rosin (PS/rosin) plasticized by dibutyl phthalate (DBP) were created with various rosin content (5, 10, 20, and 30%). These blends were then exposed to various gamma radiation dosages (50, 100, 150, and 200 kGy). Scanning electron microscopy (SEM), and mechanical characteristics were used to analyze the mixes (PS/rosin). FTIR and SEM were used to demonstrate the two polymers' physical miscibility. TGA is used to study thermal properties. The TGA thermograms demonstrated that as the PS component ratio in the blend is increased, the thermal stability of the unirradiated polymer blends (PS/rosin) also increases. Additionally, it was shown that the PS polymer provides protection against radiation degradation and enhances their thermal stability additionally, it was determined that adding PS to rosin improved its tensile strength and other mechanical qualities. On the other hand, by increasing the proportion of rosin in the blend, elongation was reduced.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135324644","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 : 2023-10-01DOI: 10.21608/ajnsa.2023.197101.1727
Hewaida madboly
Rare earth elements (REE) are found in low amounts (hundreds of ppm) in phosphoric acid solutions. Due to the strong acidity and complex nature of phosphoric acid, the development of a particularly cost-effective method for the selective recovery and separation of REEs is necessary. Extraction of REEs with commercial chelating ion exchange resins may be considered a promising alternative to the traditional but costly and pollutant solvent extraction technique. In this work, the possibility of extracting erbium(III) and yttrium(III) from phosphoric acid using a commercial cation exchange resin (Amberlite IR-120) has been investigated. In a batch system, several factors such as acid concentration, contact time, initial metal ion concentration, V/m ratio, and temperature that may affect the sorption of these metal ions were separately examined. The changes in standard thermodynamic quantities were calculated, and the outcomes indicated that the sorption of both studied metal ions is endothermic, spontaneous, and connected with an increase in the randomness of the system. During the full concentration range under study, the adsorption adhered to the Langmuir isotherm model. Desorption with 1.0 mol/L citric acid followed by 1.0 mol/L sodium sulfate (1.0 mol/L) allowed separation of Er(III) and Y(III) and recovery with 79.0% and 65.9%, respectively.
{"title":"Sorption and separation of Er and Y from phosphoric acid using commercial cation exchange resin; Amberlite IR-120","authors":"Hewaida madboly","doi":"10.21608/ajnsa.2023.197101.1727","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.197101.1727","url":null,"abstract":"Rare earth elements (REE) are found in low amounts (hundreds of ppm) in phosphoric acid solutions. Due to the strong acidity and complex nature of phosphoric acid, the development of a particularly cost-effective method for the selective recovery and separation of REEs is necessary. Extraction of REEs with commercial chelating ion exchange resins may be considered a promising alternative to the traditional but costly and pollutant solvent extraction technique. In this work, the possibility of extracting erbium(III) and yttrium(III) from phosphoric acid using a commercial cation exchange resin (Amberlite IR-120) has been investigated. In a batch system, several factors such as acid concentration, contact time, initial metal ion concentration, V/m ratio, and temperature that may affect the sorption of these metal ions were separately examined. The changes in standard thermodynamic quantities were calculated, and the outcomes indicated that the sorption of both studied metal ions is endothermic, spontaneous, and connected with an increase in the randomness of the system. During the full concentration range under study, the adsorption adhered to the Langmuir isotherm model. Desorption with 1.0 mol/L citric acid followed by 1.0 mol/L sodium sulfate (1.0 mol/L) allowed separation of Er(III) and Y(III) and recovery with 79.0% and 65.9%, respectively.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135324653","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 : 2023-10-01DOI: 10.21608/ajnsa.2023.129166.1565
Ragab Maree, Mahmoud Ali, Mostafa Hamed, Ali Helal
Herein, sorption of 137 Cs onto modified activated carbon (MAC) was carried out implying kinetics and equilibrium studies. The sorption results obeyed a pseudo-1 st -order kinetic and were applied to different isotherm models. According to the correlation coefficients, R 2 , the Langmuir, Freundlich, and Frumkin isotherm models successfully described the obtained data rather than Temkin isotherm. Based on the R 2 , the equilibrium data followed the sequence Langmuir>Freundlich>Frumkin>Temkin isotherm. The negative values of Gibbs free energy revealed that the removal process was feasible and spontaneous. The negative values of enthalpy clarified that the process is an exothermic one, suggesting that retention of 137 Cs decreased with raising reaction temperatures. The values of ΔH << 25 kJ/mol indicating that the adsorption process of cesium 137 Cs ions onto MAC is a physical adsorption process while the positive entropy values demonstrated an increase in randomness among the solid-liquid phase during adsorption. Finally, the sorption results revealed that the MAC is a suitable material for the capture of 137 Cs from low-level radioactive waste.
{"title":"Equilibrium, Kinetic and Thermodynamic Studies for the Retention of Cesium-137 from Wastewater Using Low-Cost Sorbent","authors":"Ragab Maree, Mahmoud Ali, Mostafa Hamed, Ali Helal","doi":"10.21608/ajnsa.2023.129166.1565","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.129166.1565","url":null,"abstract":"Herein, sorption of 137 Cs onto modified activated carbon (MAC) was carried out implying kinetics and equilibrium studies. The sorption results obeyed a pseudo-1 st -order kinetic and were applied to different isotherm models. According to the correlation coefficients, R 2 , the Langmuir, Freundlich, and Frumkin isotherm models successfully described the obtained data rather than Temkin isotherm. Based on the R 2 , the equilibrium data followed the sequence Langmuir>Freundlich>Frumkin>Temkin isotherm. The negative values of Gibbs free energy revealed that the removal process was feasible and spontaneous. The negative values of enthalpy clarified that the process is an exothermic one, suggesting that retention of 137 Cs decreased with raising reaction temperatures. The values of ΔH << 25 kJ/mol indicating that the adsorption process of cesium 137 Cs ions onto MAC is a physical adsorption process while the positive entropy values demonstrated an increase in randomness among the solid-liquid phase during adsorption. Finally, the sorption results revealed that the MAC is a suitable material for the capture of 137 Cs from low-level radioactive waste.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135324669","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 : 2023-10-01DOI: 10.21608/ajnsa.2023.198886.1739
Waleed Abddellah, B. A. Tartor, Nabil Hassan, Nasr Nasr Elsayed
The objective of this investigation is to quantify the distinct levels of radioactivity exhibited by 238 U ( 226 Ra), 232 Th, and 40 K in samples of black sand that were collected from the northern region of the Nile Delta, in close proximity to Rosetta beach that runs parallel to the Mediterranean shoreline. The specific activities of the radionuclides were measured using a high pure germanium detector (HPGe). The findings indicated that the specific activity levels of 226 Ra, 232 Th, and 40 K were observed to fall within a range of values from 10.94 ± 0.76 to 279.31 ±16.44 Bq kg -1 , 10.92 ± 0.67 to 665.72 ± 29.30 Bq kg -1 , and 34.04 ± 1.68 to 101.32 ± 4.79 Bq kg -1 , respectively, with an average value of 87.85 ± 5.26, 155.95 ± 7.04, and 72.42 ± 3.65 Bq kg -1 , respectively. The concentrations of radionuclides in the samples exceeded the limits recommended by UNSCEAR, the IAEA, and the ICRP for the Earth's crust. Moreover, some samples showed radiological hazard indexes, such as radium equivalent activities (Ra eq ), external and internal indexes, gamma and alpha indexes, and annual effective dose, that exceeded the recommended safety values of 370 Bq kg -1 for Ra eq , one for external and internal indexes, gamma and alpha indexes, and 0.48 mSvy -1 for annual effective dose. These findings suggest that black sand samples may pose a radiological hazard, highlighting the need for radiation regulation and regular monitoring of black sand sites.
{"title":"Evaluation of Natural Radioactive Levels and Its Related Potential Radiological Impact of Black Sand in the North of Nile Delta, Egypt.,","authors":"Waleed Abddellah, B. A. Tartor, Nabil Hassan, Nasr Nasr Elsayed","doi":"10.21608/ajnsa.2023.198886.1739","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.198886.1739","url":null,"abstract":"The objective of this investigation is to quantify the distinct levels of radioactivity exhibited by 238 U ( 226 Ra), 232 Th, and 40 K in samples of black sand that were collected from the northern region of the Nile Delta, in close proximity to Rosetta beach that runs parallel to the Mediterranean shoreline. The specific activities of the radionuclides were measured using a high pure germanium detector (HPGe). The findings indicated that the specific activity levels of 226 Ra, 232 Th, and 40 K were observed to fall within a range of values from 10.94 ± 0.76 to 279.31 ±16.44 Bq kg -1 , 10.92 ± 0.67 to 665.72 ± 29.30 Bq kg -1 , and 34.04 ± 1.68 to 101.32 ± 4.79 Bq kg -1 , respectively, with an average value of 87.85 ± 5.26, 155.95 ± 7.04, and 72.42 ± 3.65 Bq kg -1 , respectively. The concentrations of radionuclides in the samples exceeded the limits recommended by UNSCEAR, the IAEA, and the ICRP for the Earth's crust. Moreover, some samples showed radiological hazard indexes, such as radium equivalent activities (Ra eq ), external and internal indexes, gamma and alpha indexes, and annual effective dose, that exceeded the recommended safety values of 370 Bq kg -1 for Ra eq , one for external and internal indexes, gamma and alpha indexes, and 0.48 mSvy -1 for annual effective dose. These findings suggest that black sand samples may pose a radiological hazard, highlighting the need for radiation regulation and regular monitoring of black sand sites.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135324392","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 : 2023-10-01DOI: 10.21608/ajnsa.2023.197044.1728
Aly Eissa, safaa Abdelwahab, Amal Mansour, Usama Abdel Monem
The present study was conducted to explore the effect of different gamma (γ) irradiation doses (0,10,20 and 30 kGy) on, soluble dietary fiber (SDF), in-soluble dietary fiber (IDF), hemicelluloses, cellulose, lignin, neutral detergent fiber (NDF), acid detergent fiber (ADF) and acid detergent lignin (ADL)of date seed (DS). In addition, this work to evaluate the impact of gamma irradiation DS on biochemical, physiological as well as productive traits of rabbits. Parameters studied were rabbit’s performance (body weight, gain weight, feed intake, feed conversion, water intake, rectum temperature and respiration rate), apparent digestibility (dry matter, crude protein, crude fiber and ether extracts), carcass characteristics (carcass weight, dressing (%) and prime cuts (%) and blood biochemistry (AST and ALT, total protein, albumin, globulin, glucose, urea, creatinine and Blood hematology such as RBCs, WBCs and HB %). 60 New Zealand White weaned male rabbits of 35 days age were randomly divided to 4 treatment groups of approximately the same average weight (15 animals each). The 1 st group was kept on the control diet supplemented with 10% DS (non-irradiated), 2 nd , 3 rd and 4 th groups were kept on the control diet supplemented with 10% irradiated DS at 10, 20 and 30k Gy, respectively. The obtained results revealed a increases in SDF and IDF. The increases were linearly correlated as function of radiation dose in kGy. On the other hands, there was significantly diminished in hemicelluloses, cellulose, lignin, NDF, ADF and ADL with escalating the radiation dose. Feeding on control diet supplemented with 10 % irradiated DS resulted in a significant enhancement of body weight, gain weight, feed conversion, the apparent digestibility of dry matter, crude protein, crude fiber and carcass characteristics. While, feed intake, water intake, rectal temperature, respiration rate, ether extracts digestibility, AST and ALT, total protein, albumin, globulin, glucose, urea, creatinine and blood hematology such as RBCs, WBCs and HB % were not altered by the treatments. Generally, it can be concluded that radiation processing with γ-rays seems to be an effective procedure to upgrade the digestibility of DS. Consequently, irradiated DS supplemented diets fed to growing rabbits improved rabbits' growth performance without detrimental effects .
{"title":"Impacts of Gamma-Irradiated Date Seed (DS) as Dietary Supplement on Productive and Physiological Traits in Growing Rabbits","authors":"Aly Eissa, safaa Abdelwahab, Amal Mansour, Usama Abdel Monem","doi":"10.21608/ajnsa.2023.197044.1728","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.197044.1728","url":null,"abstract":"The present study was conducted to explore the effect of different gamma (γ) irradiation doses (0,10,20 and 30 kGy) on, soluble dietary fiber (SDF), in-soluble dietary fiber (IDF), hemicelluloses, cellulose, lignin, neutral detergent fiber (NDF), acid detergent fiber (ADF) and acid detergent lignin (ADL)of date seed (DS). In addition, this work to evaluate the impact of gamma irradiation DS on biochemical, physiological as well as productive traits of rabbits. Parameters studied were rabbit’s performance (body weight, gain weight, feed intake, feed conversion, water intake, rectum temperature and respiration rate), apparent digestibility (dry matter, crude protein, crude fiber and ether extracts), carcass characteristics (carcass weight, dressing (%) and prime cuts (%) and blood biochemistry (AST and ALT, total protein, albumin, globulin, glucose, urea, creatinine and Blood hematology such as RBCs, WBCs and HB %). 60 New Zealand White weaned male rabbits of 35 days age were randomly divided to 4 treatment groups of approximately the same average weight (15 animals each). The 1 st group was kept on the control diet supplemented with 10% DS (non-irradiated), 2 nd , 3 rd and 4 th groups were kept on the control diet supplemented with 10% irradiated DS at 10, 20 and 30k Gy, respectively. The obtained results revealed a increases in SDF and IDF. The increases were linearly correlated as function of radiation dose in kGy. On the other hands, there was significantly diminished in hemicelluloses, cellulose, lignin, NDF, ADF and ADL with escalating the radiation dose. Feeding on control diet supplemented with 10 % irradiated DS resulted in a significant enhancement of body weight, gain weight, feed conversion, the apparent digestibility of dry matter, crude protein, crude fiber and carcass characteristics. While, feed intake, water intake, rectal temperature, respiration rate, ether extracts digestibility, AST and ALT, total protein, albumin, globulin, glucose, urea, creatinine and blood hematology such as RBCs, WBCs and HB % were not altered by the treatments. Generally, it can be concluded that radiation processing with γ-rays seems to be an effective procedure to upgrade the digestibility of DS. Consequently, irradiated DS supplemented diets fed to growing rabbits improved rabbits' growth performance without detrimental effects .","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135324417","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 : 2023-10-01DOI: 10.21608/ajnsa.2023.190070.1715
Zeinab Akl
New potentiometric membrane sensors have been designed to measure Th 4+ ions using two derivatives of 18-crown-6-ether as neutral ion-carriers. The membrane composition was optimized through a multi-stage process regarding plasticizers, lipophilic ionic additives, and ion-carrier content and the corresponding sensors' performance characteristics were investigated. The optimized sensors exhibited a Nernstian behavior for Th 4+ ions over wide working concentration and pH ranges. The sensors' repeatability, reproducibility, and reversibility were tested under the optimal conditions. The selectivity studies indicated the selective behavior of the developed sensors towards Th 4+ ions with respect to various mono, di, and trivalent ions. The sensors possess a fast response time and can work for at least 12 weeks without significant changes in their sensitivity. Th 4+ ions concentration in water samples was directly assessed by the developed sensors with good recovery and relative standard deviation values indicating the accuracy and precision of the developed sensors. Moreover, the obtained results were in a good agreement with those obtained by the spectrometric method.
{"title":"Potentiometric Sensing of Thorium Ions Using PVC Matrix Electrodes Based on Crown Ethers","authors":"Zeinab Akl","doi":"10.21608/ajnsa.2023.190070.1715","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.190070.1715","url":null,"abstract":"New potentiometric membrane sensors have been designed to measure Th 4+ ions using two derivatives of 18-crown-6-ether as neutral ion-carriers. The membrane composition was optimized through a multi-stage process regarding plasticizers, lipophilic ionic additives, and ion-carrier content and the corresponding sensors' performance characteristics were investigated. The optimized sensors exhibited a Nernstian behavior for Th 4+ ions over wide working concentration and pH ranges. The sensors' repeatability, reproducibility, and reversibility were tested under the optimal conditions. The selectivity studies indicated the selective behavior of the developed sensors towards Th 4+ ions with respect to various mono, di, and trivalent ions. The sensors possess a fast response time and can work for at least 12 weeks without significant changes in their sensitivity. Th 4+ ions concentration in water samples was directly assessed by the developed sensors with good recovery and relative standard deviation values indicating the accuracy and precision of the developed sensors. Moreover, the obtained results were in a good agreement with those obtained by the spectrometric method.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135324790","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 : 2023-07-06DOI: 10.21608/ajnsa.2023.196587.1724
Mohamed Mitwalli, Fatma Qabeeli, A. El-Khatib, M. Abbas, G. Saleh
The present study is carried out to determine the natural radioactivity level and assessment of the radiological impact on El-Missikat younger granites of the Central Eastern Desert in Egypt. Regarding the distribution pattern of radionuclides associated with the abundance of naturally occurring and technically enhanced radioactive materials, 34 investigated samples were collected from predetermined locations in the El-Missikat area. The radioanalytical measurements were performed by using NaI(Tl) gamma-ray spectrometer, then PCA3 Oxford software was used to analyze the recorded spectra. The efficiency transfer of Gamma-ray was applied within EFFTRAN software, and the library of radionuclides has been designed to involve radionuclides belonging to the natural uranium-238 and thorium-232 isotopes as well potassium-40. The radiation doses were calculated utilizing activity concentrations and the conversion coefficients recommended by EPA, ICRP, and UNSCEAR. The average values of activity concentrations for U-238, Th-232, and K-40 are (9986.21, 5586.19, and 64.72 Bq/kg) respectively. The average values of calculated effective dose caused by gamma radiation of U-238, Th-232, and K-40 are (6.79E-19, 2.20E-18, and 4.30E-15 Sv/y) respectively. Most of the resulting values are significantly of a high level compared to the worldwide reference EPA, IAEA, ICRP, and UNSCEAR for similar environments. To furnish results regarding radiation protection and human safety integral of organ doses, the excess lifetime cancer risk and hazards indices were calculated to apply a perfect radiation protection methodology for the professionals.
{"title":"Radionuclides Determination and Computing Radiobiological Dose for TENORM Exposure Using NaI(Tl) Gamma-ray Spectrometer","authors":"Mohamed Mitwalli, Fatma Qabeeli, A. El-Khatib, M. Abbas, G. Saleh","doi":"10.21608/ajnsa.2023.196587.1724","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.196587.1724","url":null,"abstract":"The present study is carried out to determine the natural radioactivity level and assessment of the radiological impact on El-Missikat younger granites of the Central Eastern Desert in Egypt. Regarding the distribution pattern of radionuclides associated with the abundance of naturally occurring and technically enhanced radioactive materials, 34 investigated samples were collected from predetermined locations in the El-Missikat area. The radioanalytical measurements were performed by using NaI(Tl) gamma-ray spectrometer, then PCA3 Oxford software was used to analyze the recorded spectra. The efficiency transfer of Gamma-ray was applied within EFFTRAN software, and the library of radionuclides has been designed to involve radionuclides belonging to the natural uranium-238 and thorium-232 isotopes as well potassium-40. The radiation doses were calculated utilizing activity concentrations and the conversion coefficients recommended by EPA, ICRP, and UNSCEAR. The average values of activity concentrations for U-238, Th-232, and K-40 are (9986.21, 5586.19, and 64.72 Bq/kg) respectively. The average values of calculated effective dose caused by gamma radiation of U-238, Th-232, and K-40 are (6.79E-19, 2.20E-18, and 4.30E-15 Sv/y) respectively. Most of the resulting values are significantly of a high level compared to the worldwide reference EPA, IAEA, ICRP, and UNSCEAR for similar environments. To furnish results regarding radiation protection and human safety integral of organ doses, the excess lifetime cancer risk and hazards indices were calculated to apply a perfect radiation protection methodology for the professionals.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49473978","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 : 2023-07-01DOI: 10.21608/ajnsa.2023.183282.1701
Ahmed Abdelsadek, Prof. Khaled Sallam, Mahmoued eltawoosy
This study aimed to examine the benefits and drawbacks of both solid phase and liquid phase radioimmunoassay (RIA) systems used to quantify C-peptide in human serum. The fundamental reagents were produced. The first RIA was 125 I-C-peptide tracer. An indirect tracer preparation utilized chloramine-T and tyrosine methyl ester (TME). Using HPLC column, the tracer was separated from the reaction mixture. The second reagent was the polyclonal antibody which was produced previously in another work. The coated tube was carried out using a highly purified polyclonal antibody. A set of C-peptide standards was created using highly purified C-peptide. A liquid phase system radioimmunoassay (RIA) was created to measure the C-peptide levels in human serum. Numerous parameters were investigated to perform this study including cross reaction, specific and nonspecific binding, sample volume, temperature influence, incubation time, and the valid period. Different samples of human serum were examined using both solid and liquid phases. The statistical study showed a strong relation between the outcomes of the two procedures with minor differences. The solid phase has many advantages over the liquid phase. A high nonspecific binding and a low specific binding percent were observed. On the contrary a high binding percent and the low cost are the main advantages in Liquid phase system.
{"title":"Comparative study between liquid phase and solid phase radioimmunoassay system for determination of C-pipted in human serum","authors":"Ahmed Abdelsadek, Prof. Khaled Sallam, Mahmoued eltawoosy","doi":"10.21608/ajnsa.2023.183282.1701","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.183282.1701","url":null,"abstract":"This study aimed to examine the benefits and drawbacks of both solid phase and liquid phase radioimmunoassay (RIA) systems used to quantify C-peptide in human serum. The fundamental reagents were produced. The first RIA was 125 I-C-peptide tracer. An indirect tracer preparation utilized chloramine-T and tyrosine methyl ester (TME). Using HPLC column, the tracer was separated from the reaction mixture. The second reagent was the polyclonal antibody which was produced previously in another work. The coated tube was carried out using a highly purified polyclonal antibody. A set of C-peptide standards was created using highly purified C-peptide. A liquid phase system radioimmunoassay (RIA) was created to measure the C-peptide levels in human serum. Numerous parameters were investigated to perform this study including cross reaction, specific and nonspecific binding, sample volume, temperature influence, incubation time, and the valid period. Different samples of human serum were examined using both solid and liquid phases. The statistical study showed a strong relation between the outcomes of the two procedures with minor differences. The solid phase has many advantages over the liquid phase. A high nonspecific binding and a low specific binding percent were observed. On the contrary a high binding percent and the low cost are the main advantages in Liquid phase system.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45851321","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 : 2023-07-01DOI: 10.21608/ajnsa.2023.184230.1705
M. Soliman, Z. Tawfik
Vitamins are organic compounds that are not produced by body cells. Therefore, vitamins need to be taken from nutrients and supplements daily. They play an important role in carbohydrate, fat and protein metabolism, healthy development of the body, immunity against infections, and digestive functions. Vitamin B 12 is a necessary nutrient; it is widely used as a dietary supplement and to treat anemia all over the world. The present study focuses on isolation and extraction of vitamin B 12 producing Pseudomonas aeruginosa isolated from bladder cancer patients urine samples, the isolate was identified using morphological, physiological, biochemical methods, and confirmed by API 20 specific media, and named Pseudomonas aeruginosa M20. The vitamin B 12 production was enhanced by using Trypticase soy broth and vitamin B 12 like substance was extracted by using methanol –water as solvent. More over Two doses of Gamma irradiation were used (1 and 2 kGy) to study its effect on vitamin B 12 like substance production. The extracted vitamin B 12 like substance was characterized and identified by using HPLC, IR and EDX compared to commercial vitamin B 12 , different media (Mineral salt - methanol medium and Trypticase soy broth medium) were used for Vitamin B 12 production. In addition, different solvents (methanol –water and acetone) were used for extraction of vitamin B 12 . Trypticase soy broth and methanol –water were the most proper medium and solvent for Vitamin B 12 production with compared by commercial vitamin B 12 standard . The results presented in HPLC graphs exhibits a peak with RT at 5.422 of standard vitamin B 12 , while on Trypticase soy broth medium and methanol-water as a solvent showing a peak with RT at 5.522 which is closely related to standard Vitamin B 12 . The antimicrobial activities of both irradiated and non-irradiated bacterial extracts against bacterial and fungal strains were tested and two doses of Gamma irradiation were used (1 and 2 kGy) to study the effect of Gamma irradiation on the anti-microbial activity of the extract against the bacterial and fungal strains.
{"title":"Study on the Production of Vitamin B12 by Newly Isolated and Identified Pseudomonas aeruginosa and Effect of Gamma Irradiation on Fermentation Substrate.","authors":"M. Soliman, Z. Tawfik","doi":"10.21608/ajnsa.2023.184230.1705","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.184230.1705","url":null,"abstract":"Vitamins are organic compounds that are not produced by body cells. Therefore, vitamins need to be taken from nutrients and supplements daily. They play an important role in carbohydrate, fat and protein metabolism, healthy development of the body, immunity against infections, and digestive functions. Vitamin B 12 is a necessary nutrient; it is widely used as a dietary supplement and to treat anemia all over the world. The present study focuses on isolation and extraction of vitamin B 12 producing Pseudomonas aeruginosa isolated from bladder cancer patients urine samples, the isolate was identified using morphological, physiological, biochemical methods, and confirmed by API 20 specific media, and named Pseudomonas aeruginosa M20. The vitamin B 12 production was enhanced by using Trypticase soy broth and vitamin B 12 like substance was extracted by using methanol –water as solvent. More over Two doses of Gamma irradiation were used (1 and 2 kGy) to study its effect on vitamin B 12 like substance production. The extracted vitamin B 12 like substance was characterized and identified by using HPLC, IR and EDX compared to commercial vitamin B 12 , different media (Mineral salt - methanol medium and Trypticase soy broth medium) were used for Vitamin B 12 production. In addition, different solvents (methanol –water and acetone) were used for extraction of vitamin B 12 . Trypticase soy broth and methanol –water were the most proper medium and solvent for Vitamin B 12 production with compared by commercial vitamin B 12 standard . The results presented in HPLC graphs exhibits a peak with RT at 5.422 of standard vitamin B 12 , while on Trypticase soy broth medium and methanol-water as a solvent showing a peak with RT at 5.522 which is closely related to standard Vitamin B 12 . The antimicrobial activities of both irradiated and non-irradiated bacterial extracts against bacterial and fungal strains were tested and two doses of Gamma irradiation were used (1 and 2 kGy) to study the effect of Gamma irradiation on the anti-microbial activity of the extract against the bacterial and fungal strains.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44746084","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 : 2023-07-01DOI: 10.21608/ajnsa.2023.183094.1700
Nasser H. Mohammad, Salwa A. Abou El-Nour, M. Roushdy, A. Hammad
applications. Bacterial cellulose (BC) synthesizing Komagataeibacter hansenii S strain was isolated from strawberry, and the 16S rDNA sequence homologies reached 99% with Komagataeibacter hansenii strain LMG 1527 so that the isolate can be identified as Komagataeibacter hansenii S. The isolated strain was selected owing to its high production yield of (5.4±0.6 g/l, dry weight) under optimized culturing conditions. The morphological and physicochemical features of the produced BC were studied by SEM, FTIR, XRD, TG, and mechanical tests. FESEM showed the three-dimensional porous nanofiber structure. FTIR and XRD confirmed the structure of BC. TG revealed the thermal stability of produced BC with good mechanical properties. Amoxicillin/ Flucloxacillin impregnated BC nanofibers exhibited high antibacterial potency against both Gram-positive and Gram-negative bacteria. Physicochemical and mechanical features of BC produced by Komagataeibacter hansenii S indicate its availability to be explored in food packaging, wound dressing, and fuel cell membranes
{"title":"Bacterial Cellulose Loaded with Amoxicillin/ Flucloxacillin: Innovate Tool for Antibacterial Applications","authors":"Nasser H. Mohammad, Salwa A. Abou El-Nour, M. Roushdy, A. Hammad","doi":"10.21608/ajnsa.2023.183094.1700","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.183094.1700","url":null,"abstract":"applications. Bacterial cellulose (BC) synthesizing Komagataeibacter hansenii S strain was isolated from strawberry, and the 16S rDNA sequence homologies reached 99% with Komagataeibacter hansenii strain LMG 1527 so that the isolate can be identified as Komagataeibacter hansenii S. The isolated strain was selected owing to its high production yield of (5.4±0.6 g/l, dry weight) under optimized culturing conditions. The morphological and physicochemical features of the produced BC were studied by SEM, FTIR, XRD, TG, and mechanical tests. FESEM showed the three-dimensional porous nanofiber structure. FTIR and XRD confirmed the structure of BC. TG revealed the thermal stability of produced BC with good mechanical properties. Amoxicillin/ Flucloxacillin impregnated BC nanofibers exhibited high antibacterial potency against both Gram-positive and Gram-negative bacteria. Physicochemical and mechanical features of BC produced by Komagataeibacter hansenii S indicate its availability to be explored in food packaging, wound dressing, and fuel cell membranes","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45493007","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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