Pub Date : 2023-05-01DOI: 10.21608/sjdfs.2023.179762.1071
E. Ahmed, M. Abou-Dobara, M. Ghaly, Mohamed H Abd El Aziz
{"title":"Bacterial and Physico-Chemical Studies on Drinking Water from Different Sites in Zagazig City (El-Sharkia Governorate)","authors":"E. Ahmed, M. Abou-Dobara, M. Ghaly, Mohamed H Abd El Aziz","doi":"10.21608/sjdfs.2023.179762.1071","DOIUrl":"https://doi.org/10.21608/sjdfs.2023.179762.1071","url":null,"abstract":"","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"100 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76223807","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.269881
El-Sayed El-Morsy, M. Abd Elaziz, H. El-Gharabawy
{"title":"Distribution and molecular identification of Candida albicans isolated from various clinical samples in Egypt.","authors":"El-Sayed El-Morsy, M. Abd Elaziz, H. El-Gharabawy","doi":"10.21608/sjdfs.2022.269881","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.269881","url":null,"abstract":"","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73464149","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.152263.1052
Ahmed Alnagger, Aminah Abo Elnaga, S. Rabei
The current study aims at investigating the morphology of pollen grain for eleven woody species of Fabaceae cultivated in New Damietta, Egypt. The pollen grains were prepared according to Erdtman's acetolysis method , described and photographed using light microscopy (LM). The results showed variations in their qualitative and quantitative features. Differences in pollen shape (subprolate, prolate, prolate-spheroidal, oblate-spheroidal), size (medium to large), pollen arrangement (monads or polyads), amb (circular, irregular, elliptic or triangular), polarity (isopolar, heteropolar), type of apertures ( porate, colporate, inaperturate ) and exine ornamentation patterns (psilate, verrucate, granulate, reticulate and psilate-perforate ) are characterized. Electrophoretic (SDS-PAGE) examination of total pollen protein content of four species ( Acacia ehrenbergiana , Cassia glauca , Delonix regia, Leucaena leucocephala ) revealed distinct protein bands. The results of this study is of great importance in understanding the pollen types of some allergy producing species.
{"title":"Pollen Grain Variation among Some Trees of Fabaceae in New Damietta, Egypt.","authors":"Ahmed Alnagger, Aminah Abo Elnaga, S. Rabei","doi":"10.21608/sjdfs.2022.152263.1052","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.152263.1052","url":null,"abstract":"The current study aims at investigating the morphology of pollen grain for eleven woody species of Fabaceae cultivated in New Damietta, Egypt. The pollen grains were prepared according to Erdtman's acetolysis method , described and photographed using light microscopy (LM). The results showed variations in their qualitative and quantitative features. Differences in pollen shape (subprolate, prolate, prolate-spheroidal, oblate-spheroidal), size (medium to large), pollen arrangement (monads or polyads), amb (circular, irregular, elliptic or triangular), polarity (isopolar, heteropolar), type of apertures ( porate, colporate, inaperturate ) and exine ornamentation patterns (psilate, verrucate, granulate, reticulate and psilate-perforate ) are characterized. Electrophoretic (SDS-PAGE) examination of total pollen protein content of four species ( Acacia ehrenbergiana , Cassia glauca , Delonix regia, Leucaena leucocephala ) revealed distinct protein bands. The results of this study is of great importance in understanding the pollen types of some allergy producing species.","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75391370","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.269864
S. A. Abu Ahmed, Suad Alshiteewi, E. Moawed, S. Ayyad
Cumin ( Cuminum cyminum ) seeds were extracted by methanol to examine the properties of bioactive compounds and the antioxidant activity of the plant extracts. GC/MS analysis enabled the identification of 31 bioactive compounds from C. cyminum . The major phytochemical constituents in the C. cyminum extract are Adamantane methanol; 14.15 %, Octanal dimethyl acetal; 11.34 %, S,S-dimethyl 1,2-hydrazine; 8.24% and 2,6-dimethyl, 2,4-heptadiene, was represented as 6.24%. In order to develop biobactericides and biofungicides, the antibacterial, antifungal activity and action mode of cumin against some pathogenic bacteria and fungi were evaluated. The highest antibacterial activity value was 16 mm recorded against E. coli and P. aeruginosae . Moreover, petroleum ether extracts of C. cyminum gave antifungal activity against C. albicans , P. notatum and A. niger (2 - 8 mm) but, there was no action against A. alternata and F. oxysporium . The chloroform extract of C. cyminum showed excellent antioxidant activity (30.486 mg ascorbic acid equivalent/g dry wt.) and deserves further investigations.
{"title":"Phytochemical composition of Cuminum cyminum and its biological activity","authors":"S. A. Abu Ahmed, Suad Alshiteewi, E. Moawed, S. Ayyad","doi":"10.21608/sjdfs.2022.269864","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.269864","url":null,"abstract":"Cumin ( Cuminum cyminum ) seeds were extracted by methanol to examine the properties of bioactive compounds and the antioxidant activity of the plant extracts. GC/MS analysis enabled the identification of 31 bioactive compounds from C. cyminum . The major phytochemical constituents in the C. cyminum extract are Adamantane methanol; 14.15 %, Octanal dimethyl acetal; 11.34 %, S,S-dimethyl 1,2-hydrazine; 8.24% and 2,6-dimethyl, 2,4-heptadiene, was represented as 6.24%. In order to develop biobactericides and biofungicides, the antibacterial, antifungal activity and action mode of cumin against some pathogenic bacteria and fungi were evaluated. The highest antibacterial activity value was 16 mm recorded against E. coli and P. aeruginosae . Moreover, petroleum ether extracts of C. cyminum gave antifungal activity against C. albicans , P. notatum and A. niger (2 - 8 mm) but, there was no action against A. alternata and F. oxysporium . The chloroform extract of C. cyminum showed excellent antioxidant activity (30.486 mg ascorbic acid equivalent/g dry wt.) and deserves further investigations.","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89198924","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.269841
Saleh Al saleh, T. Hegazy, Mohamed Abd El Galil, R. A. Abou Samra, MacTar Mohamed
Human-induced land use/ land cover changes resulted in various impacts on the environment at various spatial and temporal scales. Conversion of natural resources for food, urbanization and other socioeconomic benefits have all exacerbated the problem. This paper aims to detect the relationship between NDVI and LST in Al Jabal Al Akhdar Region using remote sensing and GIS tools. The spatiotemporal dynamics of vegetation (NDVI) and LST were studied and understood using a geographic information system (GIS) techniques and remote sensing data in this work. The results showed that the area of dense vegetation decreased from 1207.9 km2 in 2010 to 673.9 km2 in 2020. In 2010, 52.9% of the total area had LST less than 40°C while 47.1% of the total area had LST more than 40°C. In 2020, 8.2% of the total area had LST less than 40°C while 91.8% of the total area had LST more than 40°C. The outcome of this research provides us with new knowledge that helps us better understand the spatiotemporal land use land cover changes and their impacts on LST.
人类活动引起的土地利用/土地覆盖变化在不同的时空尺度上对环境产生了不同的影响。将自然资源转化为粮食、城市化和其他社会经济利益都加剧了这一问题。本文旨在利用遥感和GIS工具检测Al Jabal Al Akhdar地区NDVI与LST的关系。利用地理信息系统(GIS)技术和遥感数据，研究了植被(NDVI)和地表温度的时空动态变化。结果表明:2010年至2020年，密林植被面积由1207.9 km2减少至673.9 km2;2010年，52.9%的区域地表温度小于40℃，47.1%的区域地表温度大于40℃。2020年，地表温度小于40°C的面积占8.2%，大于40°C的面积占91.8%。研究结果为我们更好地理解土地利用、土地覆被的时空变化及其对地表温度的影响提供了新的认识。
{"title":"Detecting NDVI & LST in the municipalities of Al Jabal Al Akhdar Region – Libya using remote sensing and GIS","authors":"Saleh Al saleh, T. Hegazy, Mohamed Abd El Galil, R. A. Abou Samra, MacTar Mohamed","doi":"10.21608/sjdfs.2022.269841","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.269841","url":null,"abstract":"Human-induced land use/ land cover changes resulted in various impacts on the environment at various spatial and temporal scales. Conversion of natural resources for food, urbanization and other socioeconomic benefits have all exacerbated the problem. This paper aims to detect the relationship between NDVI and LST in Al Jabal Al Akhdar Region using remote sensing and GIS tools. The spatiotemporal dynamics of vegetation (NDVI) and LST were studied and understood using a geographic information system (GIS) techniques and remote sensing data in this work. The results showed that the area of dense vegetation decreased from 1207.9 km2 in 2010 to 673.9 km2 in 2020. In 2010, 52.9% of the total area had LST less than 40°C while 47.1% of the total area had LST more than 40°C. In 2020, 8.2% of the total area had LST less than 40°C while 91.8% of the total area had LST more than 40°C. The outcome of this research provides us with new knowledge that helps us better understand the spatiotemporal land use land cover changes and their impacts on LST.","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84301733","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.269854
M. Salem, Adel Elsonbaty, M. Diab, T. Al-Said
Objectives: The adsorption of indigo dye onto methylmethacrylate/sodium-Y-Zeolite composite and amidoximated acrylonitrile / Na-Y-Zeolite composte has been evaluated in watery solutions studying some different parameters namely, contact period, measure of the acidity or alkalinity of a solution, adsorbent dosage and thermal factor was also examined. Methods: Two sorption isotherm imitations namely, Langimuir and Frendlich sorption imitations had been utilized for descriping equilibria isotherm. Evaluation of the activating forces of sorption were carried out regarding sorption of indigo dye on both composites. Kinetics of the sorption model were studied and two kinetic imitations were utilized in an attempt for descriping the kinetics of the process with regard to the practically obtained information. Key findings: Regarding both composites, the psodo-second order kinetics imitation was suitable and is consistent with the practically obtained information. The activating force (Ea), difference in liberated energies (∆G), entalpy (∆H) and enthropy (∆S) of sorption methodology had been determined regarding the sorption of the indigo dye via both composites. The termodynamics of the sorption proved that the process regarding both composites had been both spontaneously and endothermically happening. Conclusion: The practically obtained information indicated that both of methylmethacrylate/sodium-Y-Zeolite composite and amidoximated polyacrylonitrile/sodium-Y-Zeolite composite might serve well as inexpensive, efficient and reproducible adsorbants to get rid of indigo dyes from wastewaters.
{"title":"Comparative investigation of indigo blue dye removal efficiency of methylmethacrylate/sodium-Y-Zeolite composite and amidoximated acrylonitrile / Na-Y-Zeolite composite","authors":"M. Salem, Adel Elsonbaty, M. Diab, T. Al-Said","doi":"10.21608/sjdfs.2022.269854","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.269854","url":null,"abstract":"Objectives: The adsorption of indigo dye onto methylmethacrylate/sodium-Y-Zeolite composite and amidoximated acrylonitrile / Na-Y-Zeolite composte has been evaluated in watery solutions studying some different parameters namely, contact period, measure of the acidity or alkalinity of a solution, adsorbent dosage and thermal factor was also examined. Methods: Two sorption isotherm imitations namely, Langimuir and Frendlich sorption imitations had been utilized for descriping equilibria isotherm. Evaluation of the activating forces of sorption were carried out regarding sorption of indigo dye on both composites. Kinetics of the sorption model were studied and two kinetic imitations were utilized in an attempt for descriping the kinetics of the process with regard to the practically obtained information. Key findings: Regarding both composites, the psodo-second order kinetics imitation was suitable and is consistent with the practically obtained information. The activating force (Ea), difference in liberated energies (∆G), entalpy (∆H) and enthropy (∆S) of sorption methodology had been determined regarding the sorption of the indigo dye via both composites. The termodynamics of the sorption proved that the process regarding both composites had been both spontaneously and endothermically happening. Conclusion: The practically obtained information indicated that both of methylmethacrylate/sodium-Y-Zeolite composite and amidoximated polyacrylonitrile/sodium-Y-Zeolite composite might serve well as inexpensive, efficient and reproducible adsorbants to get rid of indigo dyes from wastewaters.","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"130 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90705519","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.269847
Saleh Al saleh, Rasha Abu Samra, T. Hegazy, Mohamed Abd El Galil, MacTar Mohamed
Determining the spatio-temporal manners of urban sprawl is considered one of the most influential challenges in evaluating the present and future directions of the urban expansion issue. Random growth is considered as a kind of meeting the needs of the human being and expressing the achievement of its basic requirements when the state is unable to solve. This paper aimed to assess the sprawl and growth dynamics between 2010 and 2020 in Shahat City, Libya using remote sensing and GIS techniques. Three Landsat TM, ETM+, OLI images dated 2010, 2015, and 2020 were used to generate urban maps of the research area. Chi-square test and Urban expansion intensity index (UEI) were used to assess urban growth patterns in study zone. The results of the study confirmed that urban growth in the city has increase from 4.2 km2 in 2010 to 22.4 km2 in 2020. The results displayed that Shahat city has unbalance urban growth and its urban development had high freedom degree during period from 2010 to 2020.
{"title":"Urban sprawl assessment and modelling of the Shahat City, Libya, using space data and GIS","authors":"Saleh Al saleh, Rasha Abu Samra, T. Hegazy, Mohamed Abd El Galil, MacTar Mohamed","doi":"10.21608/sjdfs.2022.269847","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.269847","url":null,"abstract":"Determining the spatio-temporal manners of urban sprawl is considered one of the most influential challenges in evaluating the present and future directions of the urban expansion issue. Random growth is considered as a kind of meeting the needs of the human being and expressing the achievement of its basic requirements when the state is unable to solve. This paper aimed to assess the sprawl and growth dynamics between 2010 and 2020 in Shahat City, Libya using remote sensing and GIS techniques. Three Landsat TM, ETM+, OLI images dated 2010, 2015, and 2020 were used to generate urban maps of the research area. Chi-square test and Urban expansion intensity index (UEI) were used to assess urban growth patterns in study zone. The results of the study confirmed that urban growth in the city has increase from 4.2 km2 in 2010 to 22.4 km2 in 2020. The results displayed that Shahat city has unbalance urban growth and its urban development had high freedom degree during period from 2010 to 2020.","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"1234 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74157775","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.269861
M. Salem, Adel Elsonbaty, M. Diab, T. Al-Said
{"title":"Removal of Indigo dye from aqueous solutions using methyl methacrylate/ Na-Y-Zeolite composite","authors":"M. Salem, Adel Elsonbaty, M. Diab, T. Al-Said","doi":"10.21608/sjdfs.2022.269861","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.269861","url":null,"abstract":"","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82009066","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.269873
M. Reda, G. Behery, A. El-Harby, A. Saad
Image generation plays an important role for designing a robust coverless steganography system able to face different information hiding challenges. This paper proposes an image generation- based coverless steganography system which has the capability to transmit the secret message safely. The generated image is similar to the famous Quick Response (QR) code image; it is called semi-QR code in that paper. The proposed system consists of two processes, the first process, secret message hiding process, is used at the sender of the message and is responsible for generating the semi-QR code image from only the secret message bits using the hiding algorithm. While the second process, secret message extraction process, is used by the receiver of the message who can retrieve the secret message from the received semi-QR code image using the extraction algorithm. Finally, a coverless steganography system that implements the proposed algorithms has been built. To evaluate the effectiveness of these algorithms, experiments have been carried out using different evaluation measures, namely the Bit Error Rate (BER) and Success Rate (SR). The results confirmed that the proposed system is better than other traditional steganography systems achieving higher capacity and a higher level of robustness than them.
{"title":"Information Hiding Using Coverless Steganography System Based on Image Generation","authors":"M. Reda, G. Behery, A. El-Harby, A. Saad","doi":"10.21608/sjdfs.2022.269873","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.269873","url":null,"abstract":"Image generation plays an important role for designing a robust coverless steganography system able to face different information hiding challenges. This paper proposes an image generation- based coverless steganography system which has the capability to transmit the secret message safely. The generated image is similar to the famous Quick Response (QR) code image; it is called semi-QR code in that paper. The proposed system consists of two processes, the first process, secret message hiding process, is used at the sender of the message and is responsible for generating the semi-QR code image from only the secret message bits using the hiding algorithm. While the second process, secret message extraction process, is used by the receiver of the message who can retrieve the secret message from the received semi-QR code image using the extraction algorithm. Finally, a coverless steganography system that implements the proposed algorithms has been built. To evaluate the effectiveness of these algorithms, experiments have been carried out using different evaluation measures, namely the Bit Error Rate (BER) and Success Rate (SR). The results confirmed that the proposed system is better than other traditional steganography systems achieving higher capacity and a higher level of robustness than them.","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90101404","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 : 2022-12-01DOI: 10.21608/sjdfs.2022.269872
Mona El Hariery, A. El Afandy, Hoda R. Saad
This work discusses the geologic setting of Wadi Kab Ar Rakab Al Shamali area in the South Eastern Desert of Egypt, and the distribution of the natural radionuclides and assess the radiological hazard resulting from different rock types in the area. The background radiation levels, human exposure, dose rates, and potential radiation effects on the environment are all studied. The field geological investigation of the different rock units, with orientations to their mode of occurrence, common relationships, petrographic study and regional structure indicated that the investigated area is covered by Late Proterozoic igneous and metamorphic rocks. These basement rocks are included metavolcanics, metagabbros , granodiorites , younger gabbros, monzogranites, syenogranites, alkaline granites and alkaline syenites. The studied rock types have low uranium and thorium contents. The yearly effective dose, external absorbed dose rate in both indoor and outdoor environments, internal absorbed dose rate in both indoor and outdoor environments, and radium equivalent activity are all estimated. The investigation indicates that all the environmental impacts dose rates values in the studied rocks are lower than the public permissible values in these rocks and they are within the safety range for the public and workers. So, these rocks are safe for the building materials and can be used as ornamental stones.
本文讨论了埃及东南部沙漠Wadi Kab Ar Rakab Al Shamali地区的地质背景，以及该地区天然放射性核素的分布情况，并对该地区不同岩石类型造成的放射性危害进行了评估。本底辐射水平、人体暴露量、剂量率和对环境的潜在辐射影响都进行了研究。通过对不同岩石单元的野外地质调查，对其赋存方式、共同关系、岩相学研究和区域构造的定位，表明研究区为晚元古代火成岩和变质岩所覆盖。这些基底岩石包括变质火山岩、变质辉长岩、花岗闪长岩、年轻辉长岩、二长花岗岩、正长花岗岩、碱性花岗岩和碱性正长岩。所研究的岩石类型具有低铀和低钍含量。估算了年有效剂量、室内外环境的外吸收剂量率、室内外环境的内吸收剂量率以及镭当量活度。调查表明，所研究岩石的环境影响剂量率均低于公众允许的剂量率值，处于公众和工作人员的安全范围内。因此，这些岩石作为建筑材料是安全的，可以用作观赏石。
{"title":"GEOLOGY, PETROGRAPHY AND RADIOCTIVITY AS WILL AS ENVIRONMENTAL IMPACT AT WADI KAB Ar RAKAB Al SHAMALI ROCKS, SOUTHEASTERN DESERT, EGYPT","authors":"Mona El Hariery, A. El Afandy, Hoda R. Saad","doi":"10.21608/sjdfs.2022.269872","DOIUrl":"https://doi.org/10.21608/sjdfs.2022.269872","url":null,"abstract":"This work discusses the geologic setting of Wadi Kab Ar Rakab Al Shamali area in the South Eastern Desert of Egypt, and the distribution of the natural radionuclides and assess the radiological hazard resulting from different rock types in the area. The background radiation levels, human exposure, dose rates, and potential radiation effects on the environment are all studied. The field geological investigation of the different rock units, with orientations to their mode of occurrence, common relationships, petrographic study and regional structure indicated that the investigated area is covered by Late Proterozoic igneous and metamorphic rocks. These basement rocks are included metavolcanics, metagabbros , granodiorites , younger gabbros, monzogranites, syenogranites, alkaline granites and alkaline syenites. The studied rock types have low uranium and thorium contents. The yearly effective dose, external absorbed dose rate in both indoor and outdoor environments, internal absorbed dose rate in both indoor and outdoor environments, and radium equivalent activity are all estimated. The investigation indicates that all the environmental impacts dose rates values in the studied rocks are lower than the public permissible values in these rocks and they are within the safety range for the public and workers. So, these rocks are safe for the building materials and can be used as ornamental stones.","PeriodicalId":21655,"journal":{"name":"Scientific Journal for Damietta Faculty of Science","volume":"47 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81175570","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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