Effects of Gamma Radiation on the Composition of the Hydrocarbon Mixture Hexane-hexene
Ramin Akberov,
Lala Jabbarova,
Islam Mustafayev,
Sevinc Melikova
Issue:
Volume 6, Issue 2, June 2020
Pages:
12-18
Received:
29 October 2019
Accepted:
17 January 2020
Published:
28 June 2020
Abstract: In work the impact of ionizing radiation on mixes hexane- hexenе was investigated. Laboratory researches were conducted on a gamma source 60Co at the power of dose of P=0.10 of Gy / s in intervals of the absorbed doses D=34-103 kGy. Impact of ionizing radiation on structural and group composition of mix hexane- hexene in static conditions was investigated. Density, viscosity, iodic numbers of mixes hexane- hexenе were determined. before radiation at various absorbed doses. Existence of olefin connections is the main reason for small stability in hydrocarbon fuels. Studying of radiolysis of mixes of saturated and nonsaturated hydrocarbons at various concentration gives the chance to draw conclusions about the nature of the main radiochemical processes. In the fuels containing a large amount of nonsaturated hydrocarbons in the course of radiation the coking behavior increases and color worsens. Structuring is physically shown in organic liquids in change of viscosity and density. The processes which arose in connection with radiolysis for a long time develop after the radiation termination that can lead to change of composition of fuel. As a result of it at ambient temperature operational properties of oil fuels worsen. Communication between the chemical composition of fuel and its stability is still insufficiently well studied. These experiments continue for the purpose of studying of impact of ionizing radiation on changes of physical and chemical properties of hydrocarbons of oil.
Abstract: In work the impact of ionizing radiation on mixes hexane- hexenе was investigated. Laboratory researches were conducted on a gamma source 60Co at the power of dose of P=0.10 of Gy / s in intervals of the absorbed doses D=34-103 kGy. Impact of ionizing radiation on structural and group composition of mix hexane- hexene in static conditions was inves...
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Measurement of Radon Exhalation Rate, Annual Effective Dose and Radium Activity from Marine Sediments Samples Collected From Abian Beach, Aden Gulf, Yemen
Fuad Abdo AS-Subaihi,
Tahir Abdullah Abdulgabar Salem
Issue:
Volume 6, Issue 2, June 2020
Pages:
19-26
Received:
24 March 2020
Accepted:
27 April 2020
Published:
28 July 2020
Abstract: The behavior of radon in marine sediments collected from Abian beach, Abian Governorate, Aden Gulf, Yemen, was studied by using Alpha Guard PQ2000 PRO radon detector. The activity concentration of radon in the sediments was found to be ranging from 64.84 to 166.93±11.85Bq.m-3 with mean value 103.88±8.80Bq.m-3. The radium content in the sediments ranged from 20.01 to 56.06Bqkg-1 with mean value 33.51Bqkg-1, while the area exhalation rate of 222Rn ranged from 6.73 to 18.49Bqm-2h-1 with mean value 11.22Bqm-2h-1 also the mass exhalation rate of 222Rn ranged from 0.151 to 0.424Bqkg-1h-1 with mean value 0.253Bqkg-1h-1, respectively for the studied samples of marine sediments. The annual effective dose was found to be ranging from 1.63 to 4.21mSvy–1, with an average of 2.62mSvy–1. Average value of radon concentrations from marine sediments samples were compared with other literature values.
Abstract: The behavior of radon in marine sediments collected from Abian beach, Abian Governorate, Aden Gulf, Yemen, was studied by using Alpha Guard PQ2000 PRO radon detector. The activity concentration of radon in the sediments was found to be ranging from 64.84 to 166.93±11.85Bq.m-3 with mean value 103.88±8.80Bq.m-3. The radium content in the sediments ra...
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