The results of studies of radiation chemical transformations of Balakhani bituminous oil of Azerbaijan are adduced. The IR （infrared） spectra of initial and irradiated samples of tar fractions of bituminous oil are ...The results of studies of radiation chemical transformations of Balakhani bituminous oil of Azerbaijan are adduced. The IR （infrared） spectra of initial and irradiated samples of tar fractions of bituminous oil are compared. The kinetics of radiation chemical yields of gas products at the irradiation of bituminous oil and its tar fraction have been investigated. Irradiation is conducted in the gamma-ray source of isotope 60Co at the dose rate of P = 0.27 Gy/s and absorbed doses D = 5-163 kGy. It is found that in comparison with oil faction, tar fraction of bituminous oil has a high resistance to radiation.展开更多
Co60 gamma ray radiolysis of aqueous oxalic acid solution （1 × 10-2 M） was investigated within the dose range up to 80 kGy. The value of pH increases from 2.0 to 4.0 and approximately 90% of oxalic acid and its...Co60 gamma ray radiolysis of aqueous oxalic acid solution （1 × 10-2 M） was investigated within the dose range up to 80 kGy. The value of pH increases from 2.0 to 4.0 and approximately 90% of oxalic acid and its derivatives are degraded at the dose of 80 kGy. Dissolved O2 affects to the degradation of oxalic acid at the initial stage due to total consumption of O2 at the dose of 2 kGy. Formation of CO2 occurs at a higher rate at the initial stage until the dissolved 02 is fully consumed. The kinetic model of oxalic acid degradation in aqueous solution under the gamma irradiation was tested. The suggested mechanism complies with the experimental data both of our own and of that reported earlier.展开更多
Studied influence of γ-irradiation on stucturation in butadiene nitrile rubber solution and films properties studied also. Structuration in solutions has defined by rheological method with rotation viscometer. Shown ...Studied influence of γ-irradiation on stucturation in butadiene nitrile rubber solution and films properties studied also. Structuration in solutions has defined by rheological method with rotation viscometer. Shown influence of solvent nature (methyl ethyl ketene: toluene) to strength properties and structures of films obtained from this solvents. It has been found that during irradiation of solvent, films and butadiene nitrile rubber solution characteristic viscosity η increased, increasing of Huggins constant (К') observed as well. Changing of spatial mesh of polymers occurs at the cost of changed size of macromolecule balls. Shown, that in the issue of crossing the properties including thermo dynamical features of films and butadiene nitrile rubber solution has changed.展开更多
The present study was conducted to investigate the heavy metal contents （As, Ba, Cd, Co, Cr, Cu, Ga, Mo, Mn, Rb, Pb, Cu, Ni, V, U and Zn） in seawater samples, which were collected at two c （5 and 100 m）, from 9 di...The present study was conducted to investigate the heavy metal contents （As, Ba, Cd, Co, Cr, Cu, Ga, Mo, Mn, Rb, Pb, Cu, Ni, V, U and Zn） in seawater samples, which were collected at two c （5 and 100 m）, from 9 different sites of Azerbaijan sector of the Caspian Sea. The Agitent 7700x Series ICP-MS （inductively coupled plasma mass spectrometry） with HMI （high matrix introduction） system applied to analysis seawater. It was shown, the average concentrations of elements as Cr, Co, Cu, Mn, Pb and Zn in surface water slightly higher than their concentrations in depth water at 100 m. Practically it is not deference of the Mo, Rb and U average concentrations in surface and 100 m depth column water. There was little variation observed for nickel and vanadium. In contrast the concentrations of As, Ga and Ba in samples taken from 100 m, were significantly higher than the concentration in surface samples. Dependence concentration of elements from water columns depth can be explained in accordance with the geochemical system of classification of dissolved forms of elements in the sea water.展开更多
The present study was conducted to investigate the heavy metal contents （As, Ba, Cu, Ga, Mo, Rb, U, and V）, inorganic nutrients （NO2, NH4, NO3, PO4 and SiO2）, THC and 16EPA PAHs in seawater samples, which were col...The present study was conducted to investigate the heavy metal contents （As, Ba, Cu, Ga, Mo, Rb, U, and V）, inorganic nutrients （NO2, NH4, NO3, PO4 and SiO2）, THC and 16EPA PAHs in seawater samples, which were collected at two different sites of Azerbaijan sector of the Caspian Sea. The Agilent 7700x Series ICP-MS with HMI system is applied to analysis seawater. Inorganic nutrients defined by spectrocolorometry HACH DR5000. Dependence concentration of elements from water columns depth can be explained in accordance with the geochemical system of classification of dissolved forms of elements in the sea water. Hydrocarbons are extracted with methylene chloride, after the extracts are cleaned on silica-gel columns and then injected into GC/FID for determination of THC and GC/M Soperating in the selected-ion-monitoring mode for determination of the 16EPA PAHs. The average concentrations of THC were below the admissible environmental levels. THC ranged from 20-29 μg/L and PAHs from 〈 10-29 ng/L, respectively.展开更多
An assessment of radiologically enhanced residual materials generated during oil and gas production in near Baku, Azerbaijan, was conducted. Distribution of the <sup>228</sup>Ra/<sup>226</sup>R...An assessment of radiologically enhanced residual materials generated during oil and gas production in near Baku, Azerbaijan, was conducted. Distribution of the <sup>228</sup>Ra/<sup>226</sup>Ra Activity Ratio (AR) with depth in a sediment core from radium lake was examined. The dashed line represented ingrowth assuming that <sup>228</sup>Ra was below equilibrium with <sup>232</sup>Th in the young sediments near the top and reached equilibrium at a depth around 10 cm. In this study the radium isotopic data are used to provide estimates of the age of formation of the radiobarite contaminant and age of oil field lake. The results indicate that, the upper two layers in the core (up to 4 cm) contain fallout <sup>137</sup>Cs so at least these layers are no older than about 40 yrs. Formation waters that are sent to disposal ponds may consist of accumulated heavy hydrocarbons, paraffin, inorganic solids, and heavy emulsions. We report here results of chemical and radiochemical measurements from formation waters separated from oil pumped from approximately 700 m below ground near Baku, Azerbaijan. Our results also include data from a formation water storage pond (“radium lake”) where the waters are temporarily stored after oil is separated and then eventually disposed of by pumping into the Caspian Sea. We also analyzed the associated sediment for radiochemical components. Our study was intended to investigate how radium fractionated between the pond water and sediments.展开更多
This article describes a series of studies on the effect of the rotation of the fissile 236U nucleus in the^(235)U(n,f)process induced by monochromatic polarized neutrons with energies of 62 meV and 270 meV.The studie...This article describes a series of studies on the effect of the rotation of the fissile 236U nucleus in the^(235)U(n,f)process induced by monochromatic polarized neutrons with energies of 62 meV and 270 meV.The studied effect is expressed as a shift in the anisotropic angular distribution ofγ-rays emitted by excited fission fragments by a small angle relative to the deformation axis of the fissile nucleus when the neutron beam polarization direction is reversed.All measurements were performed at the Heinz Mayer-Leibniz research neutron source(FRM Ⅱ reactor)of the Munich Technical University in Garching on the polarized neutron beam of the POLI instrument.To generalize all results obtained on ROT effects for fissionγ-rays,the results of earlier studies by the ITEP group for cold neutrons are re-processed,and the result obtained by the PNPI group for thermal neutrons is also presented.展开更多
To address the energy storage needs of wearable electronics,this study developed highperformance,flexible micro-supercapacitors(MSCs)using 2D and 3D patterned fabric-based microelectrodes.The 2D electrodes were create...To address the energy storage needs of wearable electronics,this study developed highperformance,flexible micro-supercapacitors(MSCs)using 2D and 3D patterned fabric-based microelectrodes.The 2D electrodes were created via a screen-printing method with an omnidirectional pre-stretching strategy,while 3D array-structured electrodes were formed through electrostatic actuation.Nano-MnO_(2)and Na0.77MnO_(2)were deposited to enhance pseudo-capacitive storage and widen the electrochemical window.The C-C/MnO_(2)-based MSCs exhibited a 21%pseudo-capacitance ratio,achieving an area-specific capacitance of 118.2 mF cm^(-2)at 5 mV s^(-1)and an energy density of 39.25 mWh cm^(-2)at 0.21 mW cm^(-2).These MSCs maintained 95.05%,92.04%,and 89.74%of their capacitance under stretched,twisted,and folded conditions,respectively,and showed stable performance across temperatures from^(-2)0℃to 60℃.Additionally,C-C/Na0.77MnO_(2)-based MSCs extended the electrochemical window to 1.6 V and retained 100.2%capacitance after 6500 cycles.This work offers innovative strategies for advancing portable and wearable electronic devices.展开更多
Using the method based on Random Matrix Theory （RMT）, the results for the nearest-neighbor distributions obtained from the experimental data on ^12C-C collisions at 4.2 AGeV/c have been discussed and compared with t...Using the method based on Random Matrix Theory （RMT）, the results for the nearest-neighbor distributions obtained from the experimental data on ^12C-C collisions at 4.2 AGeV/c have been discussed and compared with the simulated data on ^12C-C collisions at 4.2 AGeV/c produced with the aid of the Dubna Cascade Model. The results show that the correlation of secondary particles decreases with an increasing number of charged particles Nch. These observed changes in the nearest-neighbor distributions of charged particles could be associated with the centrality variation of the collisions.展开更多
文摘The results of studies of radiation chemical transformations of Balakhani bituminous oil of Azerbaijan are adduced. The IR （infrared） spectra of initial and irradiated samples of tar fractions of bituminous oil are compared. The kinetics of radiation chemical yields of gas products at the irradiation of bituminous oil and its tar fraction have been investigated. Irradiation is conducted in the gamma-ray source of isotope 60Co at the dose rate of P = 0.27 Gy/s and absorbed doses D = 5-163 kGy. It is found that in comparison with oil faction, tar fraction of bituminous oil has a high resistance to radiation.
文摘Co60 gamma ray radiolysis of aqueous oxalic acid solution （1 × 10-2 M） was investigated within the dose range up to 80 kGy. The value of pH increases from 2.0 to 4.0 and approximately 90% of oxalic acid and its derivatives are degraded at the dose of 80 kGy. Dissolved O2 affects to the degradation of oxalic acid at the initial stage due to total consumption of O2 at the dose of 2 kGy. Formation of CO2 occurs at a higher rate at the initial stage until the dissolved 02 is fully consumed. The kinetic model of oxalic acid degradation in aqueous solution under the gamma irradiation was tested. The suggested mechanism complies with the experimental data both of our own and of that reported earlier.
文摘Studied influence of γ-irradiation on stucturation in butadiene nitrile rubber solution and films properties studied also. Structuration in solutions has defined by rheological method with rotation viscometer. Shown influence of solvent nature (methyl ethyl ketene: toluene) to strength properties and structures of films obtained from this solvents. It has been found that during irradiation of solvent, films and butadiene nitrile rubber solution characteristic viscosity η increased, increasing of Huggins constant (К') observed as well. Changing of spatial mesh of polymers occurs at the cost of changed size of macromolecule balls. Shown, that in the issue of crossing the properties including thermo dynamical features of films and butadiene nitrile rubber solution has changed.
文摘The present study was conducted to investigate the heavy metal contents （As, Ba, Cd, Co, Cr, Cu, Ga, Mo, Mn, Rb, Pb, Cu, Ni, V, U and Zn） in seawater samples, which were collected at two c （5 and 100 m）, from 9 different sites of Azerbaijan sector of the Caspian Sea. The Agitent 7700x Series ICP-MS （inductively coupled plasma mass spectrometry） with HMI （high matrix introduction） system applied to analysis seawater. It was shown, the average concentrations of elements as Cr, Co, Cu, Mn, Pb and Zn in surface water slightly higher than their concentrations in depth water at 100 m. Practically it is not deference of the Mo, Rb and U average concentrations in surface and 100 m depth column water. There was little variation observed for nickel and vanadium. In contrast the concentrations of As, Ga and Ba in samples taken from 100 m, were significantly higher than the concentration in surface samples. Dependence concentration of elements from water columns depth can be explained in accordance with the geochemical system of classification of dissolved forms of elements in the sea water.
文摘The present study was conducted to investigate the heavy metal contents （As, Ba, Cu, Ga, Mo, Rb, U, and V）, inorganic nutrients （NO2, NH4, NO3, PO4 and SiO2）, THC and 16EPA PAHs in seawater samples, which were collected at two different sites of Azerbaijan sector of the Caspian Sea. The Agilent 7700x Series ICP-MS with HMI system is applied to analysis seawater. Inorganic nutrients defined by spectrocolorometry HACH DR5000. Dependence concentration of elements from water columns depth can be explained in accordance with the geochemical system of classification of dissolved forms of elements in the sea water. Hydrocarbons are extracted with methylene chloride, after the extracts are cleaned on silica-gel columns and then injected into GC/FID for determination of THC and GC/M Soperating in the selected-ion-monitoring mode for determination of the 16EPA PAHs. The average concentrations of THC were below the admissible environmental levels. THC ranged from 20-29 μg/L and PAHs from 〈 10-29 ng/L, respectively.
文摘An assessment of radiologically enhanced residual materials generated during oil and gas production in near Baku, Azerbaijan, was conducted. Distribution of the <sup>228</sup>Ra/<sup>226</sup>Ra Activity Ratio (AR) with depth in a sediment core from radium lake was examined. The dashed line represented ingrowth assuming that <sup>228</sup>Ra was below equilibrium with <sup>232</sup>Th in the young sediments near the top and reached equilibrium at a depth around 10 cm. In this study the radium isotopic data are used to provide estimates of the age of formation of the radiobarite contaminant and age of oil field lake. The results indicate that, the upper two layers in the core (up to 4 cm) contain fallout <sup>137</sup>Cs so at least these layers are no older than about 40 yrs. Formation waters that are sent to disposal ponds may consist of accumulated heavy hydrocarbons, paraffin, inorganic solids, and heavy emulsions. We report here results of chemical and radiochemical measurements from formation waters separated from oil pumped from approximately 700 m below ground near Baku, Azerbaijan. Our results also include data from a formation water storage pond (“radium lake”) where the waters are temporarily stored after oil is separated and then eventually disposed of by pumping into the Caspian Sea. We also analyzed the associated sediment for radiochemical components. Our study was intended to investigate how radium fractionated between the pond water and sediments.
基金Supported by the Committee of Science of the Ministry of Science and Higher Education of the Republic of Kazakhstan(BR21881930)by the Russian Ministry for Science and Education,German Ministry for Education and Research BMBF through the project 05K13PA3.
文摘This article describes a series of studies on the effect of the rotation of the fissile 236U nucleus in the^(235)U(n,f)process induced by monochromatic polarized neutrons with energies of 62 meV and 270 meV.The studied effect is expressed as a shift in the anisotropic angular distribution ofγ-rays emitted by excited fission fragments by a small angle relative to the deformation axis of the fissile nucleus when the neutron beam polarization direction is reversed.All measurements were performed at the Heinz Mayer-Leibniz research neutron source(FRM Ⅱ reactor)of the Munich Technical University in Garching on the polarized neutron beam of the POLI instrument.To generalize all results obtained on ROT effects for fissionγ-rays,the results of earlier studies by the ITEP group for cold neutrons are re-processed,and the result obtained by the PNPI group for thermal neutrons is also presented.
基金supported by Scientific Research Project for Higher Education Institution in Hebei Province(No.BJK2023085)Natural Science Foundation Project of Hebei Province(E2024208048)+1 种基金National Natural Science Foundation of China(Grant No.22005083)Introduction of talents Research Funds for the Hebei University of Science and Technology(No.PYA2018012).
文摘To address the energy storage needs of wearable electronics,this study developed highperformance,flexible micro-supercapacitors(MSCs)using 2D and 3D patterned fabric-based microelectrodes.The 2D electrodes were created via a screen-printing method with an omnidirectional pre-stretching strategy,while 3D array-structured electrodes were formed through electrostatic actuation.Nano-MnO_(2)and Na0.77MnO_(2)were deposited to enhance pseudo-capacitive storage and widen the electrochemical window.The C-C/MnO_(2)-based MSCs exhibited a 21%pseudo-capacitance ratio,achieving an area-specific capacitance of 118.2 mF cm^(-2)at 5 mV s^(-1)and an energy density of 39.25 mWh cm^(-2)at 0.21 mW cm^(-2).These MSCs maintained 95.05%,92.04%,and 89.74%of their capacitance under stretched,twisted,and folded conditions,respectively,and showed stable performance across temperatures from^(-2)0℃to 60℃.Additionally,C-C/Na0.77MnO_(2)-based MSCs extended the electrochemical window to 1.6 V and retained 100.2%capacitance after 6500 cycles.This work offers innovative strategies for advancing portable and wearable electronic devices.
文摘Using the method based on Random Matrix Theory （RMT）, the results for the nearest-neighbor distributions obtained from the experimental data on ^12C-C collisions at 4.2 AGeV/c have been discussed and compared with the simulated data on ^12C-C collisions at 4.2 AGeV/c produced with the aid of the Dubna Cascade Model. The results show that the correlation of secondary particles decreases with an increasing number of charged particles Nch. These observed changes in the nearest-neighbor distributions of charged particles could be associated with the centrality variation of the collisions.
