تفاصيل مارك
| 000 -LEADER |
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| fixed length control field |
11619namaa22004451i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
EG-GICUC |
| 005 - أخر تعامل مع التسجيلة |
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| control field |
20260509164113.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
260509s2025 ua a|||frm||| 000 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloguing agency |
EG-GICUC |
| Language of cataloging |
eng |
| Transcribing agency |
EG-GICUC |
| Modifying agency |
EG-GICUC |
| Description conventions |
rda |
| 041 0# - LANGUAGE CODE |
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| Language code of text/sound track or separate title |
eng |
| Language code of summary or abstract |
eng |
| -- |
ara |
| 049 ## - Acquisition Source |
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| Acquisition Source |
Deposit |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
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| Classification number |
539.7 |
| 092 ## - LOCALLY ASSIGNED DEWEY CALL NUMBER (OCLC) |
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| Classification number |
539.7 |
| Edition number |
21 |
| 097 ## - Degree |
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| Degree |
M.Sc |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) |
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| Local Call Number |
Cai01.12.20.M.Sc.2025.Mo.A |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Authority record control number or standard number |
Mostafa Anwar Mansour Ali, |
| Preparation |
preparation. |
| 245 10 - TITLE STATEMENT |
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| Title |
Analysis and measurement of radioactivity and hazard assessment of black sand of North Sinai coast, Egypt / |
| Statement of responsibility, etc. |
by Mostafa Anwar Mansour Ali ; Supervision Dr. Ali Y. Ellithi, Dr. A. R. Abdulghany, Dr. A. F. El Sayed. |
| 246 15 - VARYING FORM OF TITLE |
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| Title proper/short title |
ﺗﻘﯿﯿﻢ ﻣﺤﺘﻮى اﻟﻨﻮﯾﺪات اﻟﻤﺸﻌﺔ اﻟﻄﺒﯿﻌﯿﺔ وﻣﺨﺎطﺮ اﻹﺷﻌﺎع ﻟﺮواﺳﺐ اﻟﺮﻣﺎل اﻟﺴﻮداء ﺑﻤﻨﻄﻘﺔ اﻟﺴﺎﺣﻞ اﻟﺸﻤﺎﻟﻲ ﻓﻲ ﺳﯿﻨﺎء، ﻣﺼﺮ |
| 264 #0 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Date of production, publication, distribution, manufacture, or copyright notice |
2025. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
92 pages : |
| Other physical details |
illustrations ; |
| Dimensions |
25 cm. + |
| Accompanying material |
CD. |
| 336 ## - CONTENT TYPE |
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| Content type term |
text |
| Source |
rda content |
| 337 ## - MEDIA TYPE |
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| Media type term |
Unmediated |
| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Carrier type term |
volume |
| Source |
rdacarrier |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (M.Sc)-Cairo University, 2025. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography: pages 80-89. |
| 520 #3 - SUMMARY, ETC. |
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| Summary, etc. |
This study assesses the natural radioactivity levels and associated radiological hazards of twenty-eight black sand (BS) deposit samples collected along the Mediterranean Sea coast of North Sinai, Egypt. The samples were obtained from six locations: El Ressa, Abo Sakl, Ghornata, El Arish, El Masaed, and El Romana. The activity concentrations of ²²⁶Ra, ²³²Th, and ⁴⁰K were measured using a high-purity germanium (HPGe) detector with a relative efficiency of 100%. Standard methodologies were followed for sample selection, preparation, energy and efficiency calibration, minimum detectable activity (MDA) determination, and detector performance evaluation. Ambient dose rates at the sampling sites were monitored using two well-calibrated devices.<br/>The activity concentrations of Radium (226Ra), Thorium (232Th), and Potassium (40K) in the BS samples were found to vary across the sampling locations. For El Ressa, the activity concentrations ranged from 17.08 ± 0.26 to 29.41 ± 0.34 Bq/kg for 226Ra, 4.80 ± 0.26 to<br/>15.71 ± 0.55 Bq/kg for 232Th, and 21.23 ± 2.26 to 79.48 ± 1.86 Bq/kg for 40K. In Abo Sakl, the ranges were 14.03 ± 0.26 to 28.99 ± 0.45 Bq/kg for 226Ra, 4.39 ± 0.30 to 15.14 ± 0.44 Bq/kg for 232Th, and 104.75 ± 1.87 to 126.35 ± 2.16 Bq/kg for 40K. Samples from Ghornata showed activity concentrations of 14.28 ± 0.30 to 25.09 ± 0.34 Bq/kg for 226Ra, 5.25 ± 0.34 to 11.67 ± 0.39 Bq/kg for 232Th, and 87.63 ± 1.83 to 109.13 ± 2.13 Bq/kg for 40K. For El Arish, the ranges were 14.65 ± 0.25 to 18.15 ± 0.32 Bq/kg for 226Ra, 4.83 ± 0.28 to 7.23 ±<br/>0.49 Bq/kg for 232Th, and 66.19 ± 2.01 to 110.28 ± 1.91 Bq/kg for 40K. In El Masaed, the activity concentrations were 13.22 ± 0.32 to 17.72 ± 0.31 Bq/kg for 226Ra, 3.90 ± 0.25 to 6.67<br/>± 0.68 Bq/kg for 232Th, and 66.02 ± 1.20 to 108.90 ± 2.17 Bq/kg for 40K. Finally, El Romana samples exhibited activity concentrations of 13.73 ± 0.31 to 14.44 ± 0.26 Bq/kg for 226Ra,<br/>3.82 ± 0.40 to 6.18 ± 0.53 Bq/kg for 232Th, and 267.09 ± 3.07 to 294.25 ± 4.09 Bq/kg for 40K.<br/><br/>El Ressa samples exhibited the highest average activity concentrations for 226Ra and 232Th, while El Romana samples showed the highest levels of 40K. Radiological hazard indices, including the absorbed gamma dose rate (𝐷), annual effective dose (𝐸), radium equivalent activity (𝑅𝑎𝑒𝑞), and external (𝐻𝑒𝑥) and internal (𝐻𝑖𝑛) hazard indices, were calculated. All values were found to be significantly lower than the world average values and<br/> <br/>maximum permissible limits recommended by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). Additionally, ambient dose rates across the six studied areas ranged from 0.06 to 0.10 µSv/h, well below international safety thresholds.<br/>The results indicate that the black sand deposits along the North Sinai coast pose minimal radiological risks to public health and the environment under current conditions. This study highlights the effectiveness of HPGe gamma-ray spectrometry for precise and reliable radionuclide activity measurements and underscores the importance of continuous monitoring to ensure environmental and public safety. |
| 520 #3 - SUMMARY, ETC. |
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| Summary, etc. |
ﺗﻘﯿّﻢ ھﺬه اﻟﺪراﺳﺔ ﻣﺴﺘﻮﯾﺎت اﻟﻨﺸﺎط اﻹﺷﻌﺎﻋﻲ اﻟﻄﺒﯿﻌﻲ واﻟﻤﺨﺎطﺮ اﻹﺷﻌﺎﻋﯿﺔ اﻟﻤﺮﺗﺒﻄﺔ ﺑﮭﺎ ﻓﻲ ﺛﻤﺎﻧﯿﺔ وﻋﺸﺮﯾﻦ ﻋﯿﻨﺔ ﻣﻦ رواﺳﺐ اﻟﺮﻣﺎل اﻟﺴﻮداء اﻟﺘﻲ ﺟُﻤﻌﺖ ﻋﻠﻰ طﻮل ﺳﺎﺣﻞ اﻟﺒﺤﺮ اﻷﺑﯿﺾ اﻟﻤﺘﻮﺳﻂ ﻓﻲ ﺷﻤﺎل ﺳﯿﻨﺎء، ﻣﺼﺮ. ﺗﻢ ﺟﻤﻊ اﻟﻌﯿﻨﺎت ﻣﻦ ﺳﺘﺔ ﻣﻮاﻗﻊ: اﻟﺮﺳﺔ، أﺑﻮ ﺻﻘﻞ، ﻏﺮﻧﺎطﺔ، اﻟﻌﺮﯾﺶ، اﻟﻤﺴﺎﻋﯿﺪ، ورﻣﺎﻧﺔ. ﺗﻢ ﻗﯿﺎس ﺗﺮﻛﯿﺰات اﻟﻨﺸﺎط اﻹﺷﻌﺎﻋﻲ ﻟﻜﻞ ﻣﻦ اﻟﺮادﯾﻮم226- (²²6Ra) واﻟﺜﻮرﯾﻮم232- (²³²Th) واﻟﺒﻮﺗﺎﺳﯿﻮم40- (40K) ﺑﺎﺳﺘﺨﺪام ﻛﺎﺷﻒ اﻟﺠﺮﻣﺎﻧﯿﻮم ﻋﺎﻟﻲ اﻟﻨﻘﺎء (HPGe) ﺑﻜﻔﺎءة ﻧﺴﺒﯿﺔ ﺗﺒﻠﻎ 100٪. ﺗﻢ اﺗﺒﺎع ﻣﻨﮭﺠﯿﺎت ﻗﯿﺎﺳﯿﺔ ﻓﻲ اﺧﺘﯿﺎر اﻟﻌﯿﻨﺎت وﺗﺤﻀﯿﺮھﺎ، وﻣﻌﺎﯾﺮة اﻟﻄﺎﻗﺔ واﻟﻜﻔﺎءة، وﺗﺤﺪﯾﺪ اﻟﺤﺪ اﻷدﻧﻰ ﻟﻠﻨﺸﺎط اﻟﻘﺎﺑﻞ ﻟﻠﻜﺸﻒ (MDA) ، وﺗﻘﯿﯿﻢ أداء اﻟﻜﺎﺷﻒ. ﻛﻤﺎ ﺗﻢ ﻣﺮاﻗﺒﺔ ﻣﻌﺪﻻت اﻟﺠﺮﻋﺔ اﻟﻤﺤﯿﻄﺔ ﻓﻲ ﻣﻮاﻗﻊ أﺧﺬ اﻟﻌﯿﻨﺎت ﺑﺎﺳﺘﺨﺪام ﺟﮭﺎزﯾﻦ ﻣﻌﺎﯾﺮﯾﻦ ﺑﺪﻗﺔ.<br/>أظﮭﺮت ﻧﺘﺎﺋﺞ ﻗﯿﺎس اﻟﻨﺸﺎط اﻹﺷﻌﺎﻋﻲ ﺗﺒﺎﯾﻨًﺎ ﻓﻲ ﺗﺮﻛﯿﺰات اﻟﻨﻮﯾﺪات اﻟﻤﺸﻌﺔ ﺑﯿﻦ اﻟﻤﻮاﻗﻊ اﻟﻤﺨﺘﻠﻔﺔ. ﺗﺮاوﺣﺖ ﺗﺮﻛﯿﺰات اﻟﻨﺸﺎط اﻹﺷﻌﺎﻋﻲ ﻓﻲ ﻣﻮﻗﻊ اﻟﺮﺳﺔ ﺑﯿﻦ 0.26 ± 17.08 و 29.41±0.34 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺮادﯾﻮم226-، وﺑﯿﻦ 0.26 ± 4.80 و 15.71±0.55 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺜﻮرﯾﻮم232-، وﺑﯿﻦ 2.26 ± 21.23 و 79.48±1.86 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺒﻮﺗﺎﺳﯿﻮم.40- أﻣﺎ ﻓﻲ ﻣﻮﻗﻊ أﺑﻮ ﺻﻘﻞ، ﻓﻜﺎﻧﺖ اﻟﺘﺮاﻛﯿﺰ ﻓﻲ اﻟﻨﻄﺎق 0.26 ± 14.03 إﻟﻰ 28.99±0.45 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺮادﯾﻮم226-، و 0.30 ± 4.39 إﻟﻰ 15.14±0.44 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺜﻮرﯾﻮم232-، و 1.87 ± 104.75 إﻟﻰ±2.16 126.35 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺒﻮﺗﺎﺳﯿﻮم.40- أﻣﺎ اﻟﻌﯿﻨﺎت ﻣﻦ ﻣﻮﻗﻊ ﻏﺮﻧﺎطﺔ، ﻓﻘﺪ ﺗﺮاوﺣﺖ اﻟﺘﺮاﻛﯿﺰ ﺑﯿﻦ 0.30 ± 14.28و±0.34 25.09 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺮادﯾﻮم226-، و 0.34 ± 5.25 و ±0.39 11.67 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺜﻮرﯾﻮم232-، و 1.83 ± 87.63 و±2.13 109.13 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺒﻮﺗﺎﺳﯿﻮم40- . وﻓﻲ اﻟﻌﺮﯾﺶ، ﺗﺮاوﺣﺖ اﻟﻘﯿﻢ ﺑﯿﻦ 0.25 ± 14.65 و 18.15±0.32 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺮادﯾﻮم226-، و 0.28 ± 4.83 و±0.49 7.23 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺜﻮرﯾﻮم232- ، و2.01 ± 66.19 و±1.91 110.28 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺒﻮﺗﺎﺳﯿﻮم.40- ﺑﯿﻨﻤﺎ ﻛﺎﻧﺖ ﺗﺮﻛﯿﺰات اﻟﻨﺸﺎط اﻹﺷﻌﺎﻋﻲ ﻓﻲ اﻟﻤﺴﺎﻋﯿﺪ ﺑﯿﻦ 0.32 ± 13.22 و±0.31 17.72 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺮادﯾﻮم226-، و 0.25 ± 3.90 و0.68 6.67± ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺜﻮرﯾﻮم232-، و 1.20 ± 66.02 و±2.17 108.90 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺒﻮﺗﺎﺳﯿﻮم.40- وأﺧﯿﺮًا، أظﮭﺮت ﻋﯿﻨﺎت اﻟﺮﻣﺎﻧﺔ ﺗﺮاﻛﯿﺰ ﺗﺘﺮاوح ﺑﯿﻦ 0.31 ± 13.73 و 14.44±0.26ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺮادﯾﻮم226-، و 0.40 ± 3.82 و 0.53 6.18± ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺜﻮرﯾﻮم232-، و 3.07 ± 267.09 و4.09 ± 294.25 ﺑﻜﺮﯾﻞ/ﻛﻐﻢ ﻟﻠﺒﻮﺗﺎﺳﯿﻮم.40-<br/>أظﮭﺮت ﻋﯿﻨﺎت اﻟﺮﺳﺔ أﻋﻠﻰ ﻣﺘﻮﺳﻂ ﻟﺘﺮﻛﯿﺰات اﻟﻨﺸﺎط اﻹﺷﻌﺎﻋﻲ ﻟﻜﻞ ﻣﻦ اﻟﺮادﯾﻮم226- و اﻟﺜﻮرﯾﻮم232-، ﺑﯿﻨﻤﺎ ﺳﺠﻠﺖ ﻋﯿﻨﺎت اﻟﺮﻣﺎﻧﺔ أﻋﻠﻰ ﺗﺮﻛﯿﺰات ﻟﻠﺒﻮﺗﺎﺳﯿﻮم.40- ﺗﻢ ﺣﺴﺎب ﻣﺆﺷﺮات اﻟﻤﺨﺎطﺮ<br/>واﻟﻨﺸﺎط اﻟﻤﻜﺎﻓﺊ ﻟﻠﺮادﯾﻮم (Raeq) ، وﻣﺆﺷﺮي اﻟﺨﻄﻮرة اﻟﺨﺎرﺟﯿﺔ (Hex) واﻟﺪاﺧﻠﯿﺔ (Hin). ﺗﺒﯿﻦ أن ﺟﻤﯿﻊ اﻟﻘﯿﻢ أﻗﻞ ﺑﻜﺜﯿﺮ ﻣﻦ اﻟﻤﺘﻮﺳﻄﺎت اﻟﻌﺎﻟﻤﯿﺔ واﻟﺤﺪود اﻟﻘﺼﻮى اﻟﻤﻮﺻﻰ ﺑﮭﺎ ﻣﻦ ﻗﺒﻞ اﻟﻠﺠﻨﺔ اﻟﻌﻠﻤﯿﺔ اﻟﺘﺎﺑﻌﺔ ﻟﻸﻣﻢ<br/> <br/>ﻋﻼوة ﻋﻠﻰ ذﻟﻚ، ﺗﺮاوﺣﺖ ﻣﻌﺪﻻت اﻟﺠﺮﻋﺔ<br/> <br/>(UNSCEAR).<br/> <br/>اﻟﻤﺘﺤﺪة اﻟﻤﻌﻨﯿﺔ ﺑﺂﺛﺎر اﻹﺷﻌﺎع اﻟﺬري<br/> <br/>اﻟﻤﺤﯿﻄﺔ ﻓﻲ اﻟﻤﻨﺎطﻖ اﻟﺴﺖ اﻟﻤﺪروﺳﺔ ﺑﯿﻦ 0.06 و0.10 ﻣﯿﻜﺮوﺳﯿﻔﺮت/ﺳﺎﻋﺔ، وھﻲ أﻗﻞ ﺑﻜﺜﯿﺮ ﻣﻦ اﻟﺤﺪود اﻟﺪوﻟﯿﺔ اﻟﻤﺴﻤﻮح ﺑﮭﺎ.<br/>ﺗﺸﯿﺮ اﻟﻨﺘﺎﺋﺞ إﻟﻰ أن رواﺳﺐ اﻟﺮﻣﺎل اﻟﺴﻮداء ﻋﻠﻰ طﻮل ﺳﺎﺣﻞ ﺷﻤﺎل ﺳﯿﻨﺎء ﻻ ﺗﺸﻜﻞ ﻣﺨﺎطﺮ إﺷﻌﺎﻋﯿﺔ ﻛﺒﯿﺮة ﻋﻠﻰ اﻟﺼﺤﺔ اﻟﻌﺎﻣﺔ أو اﻟﺒﯿﺌﺔ ﻓﻲ ظﻞ اﻟﻈﺮوف اﻟﺤﺎﻟﯿﺔ. ﺗﺆﻛﺪ ھﺬه اﻟﺪراﺳﺔ ﻋﻠﻰ ﻓﻌﺎﻟﯿﺔ ﺗﻘﻨﯿﺔ ﻗﯿﺎس اﻟﻄﯿﻒ اﻹﺷﻌﺎﻋﻲ ﺑﺄﺷﻌﺔ ﻏﺎﻣﺎ ﺑﺎﺳﺘﺨﺪام HPGe ﻓﻲ ﻗﯿﺎس ﺗﺮاﻛﯿﺰ اﻟﻨﻮﯾﺪات اﻟﻤﺸﻌﺔ ﺑﺪﻗﺔ وﻣﻮﺛﻮﻗﯿﺔ، ﻛﻤﺎ ﺗﺴﻠﻂ اﻟﻀﻮء ﻋﻠﻰ أھﻤﯿﺔ اﻟﺮﺻﺪ اﻟﻤﺴﺘﻤﺮ ﻟﻀﻤﺎن اﻟﺴﻼﻣﺔ اﻟﺒﯿﺌﯿﺔ واﻟﺼﺤﯿﺔ. |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE |
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| Issues CD |
Issues also as CD. |
| 546 ## - LANGUAGE NOTE |
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| Text Language |
Text in English and abstract in Arabic & English. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Nuclear physics. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
اﻟﻔﯿﺰﯾﺎء اﻟﻨﻮوﯾﺔ |
| 653 #1 - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
HPGe gamma spectrometry |
| -- |
radiological risk assessment |
| -- |
black sand deposits |
| -- |
North Sinai coast |
| -- |
natural radioactivity |
| -- |
hazard indices |
| -- |
HPGe ﻗﯿﺎس اﻟﻄﯿﻒ اﻹﺷﻌﺎﻋﻲ ﺑﺄﺷﻌﺔ ﻏﺎﻣﺎ |
| -- |
ﺗﻘﯿﯿﻢ اﻟﻤﺨﺎطﺮ اﻹﺷﻌﺎﻋﯿﺔ |
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Ali Y. Ellithi |
| Relator term |
thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
A. R. Abdulghany |
| Relator term |
thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
A. F. El Sayed |
| Relator term |
thesis advisor. |
| 900 ## - Thesis Information |
|---|
| Grant date |
01-01-2025 |
| Supervisory body |
Ali Y. Ellithi |
| -- |
A. R. Abdulghany |
| -- |
A. F. El Sayed |
| Universities |
Cairo University |
| Faculties |
Faculty of Science |
| Department |
Department of Experimental Nuclear Physics |
| 905 ## - Cataloger and Reviser Names |
|---|
| Cataloger Name |
Shimaa |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Koha item type |
Thesis |
| Edition |
21 |
| Suppress in OPAC |
No |