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Efficient hydroquinone sensor development based on Co3O4 nanoparticle

Research Abstract

NULL

Research Authors
Bahaa M. Abu-Zied, M.M. Alam, Abdullah M. Asiri, Jahir Ahmed, Mohammed M. Rahman
Research Department
Research Journal
Microchemical Journal
Research Pages
104972
Research Publisher
Elsevier
Research Rank
1
Research Vol
157
Research Website
https://www.sciencedirect.com/science/article/abs/pii/S0026265X20301697
Research Year
2020

Nanosheets-nanorods transformation during the non-isothermal decomposition of gadolinium acetate

Research Abstract

NULL

Research Authors
Bahaa M. Abu-Zied, Lucie Obalova, Kateřina Pacultova, Kateřina Karaskova, Maged S. Al-Fakeh, Abdullah M. Asiri, Fahad M. Alminderej
Research Department
Research Journal
Ceramics International
Research Pages
25467–25477
Research Publisher
Elsevier
Research Rank
1
Research Vol
46 Part A
Research Website
https://www.sciencedirect.com/science/article/pii/S0272884220320162
Research Year
2020

Control optical characterizations of Ta+5–doped B2O3–Si2O–CaO–BaO glasses by irradiation dose

Research Abstract

Borosilicate glasses within 25B2O3–15Si2O–10CaO-(50-x)BaO-xTa2O5 system at different Ta2O5 contents (x = 0, 4, 8, 12, and 15 wt%) were synthesized via quenching technique. The effect of irradiation doses of both 10, and 40 kGy, as well as the Ta2O5 ratio on the structural and optical characteristics of the prepared glasses were studied. The investigations were carried out using UV–Vis–NIR spectrophotometer, differential scanning calorimetry (DSC), X-ray powder diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR) techniques. Physical parameters such as density, molar volumes, refractive index, optical bandgap, Urbach energy, optical density, extinction coefficient, optical sheet resistance, and thermal emissivity of 25B2O3–15Si2O–10CaO-(50-x)BaO-xTa2O5 samples with different irradiation doses were investigated. The results show that irradiation does not affect the crystal structure for the present samples even at 40 kGy. The optical aspects reveal the indirect allowed optical transition for the studied samples. The evaluated optical parameters show an effective influence towards both Ta2O5 content and irradiation does which forces the optical applications.

Research Authors
M.Rashad, H.A.Saudi, Hesham M.H.Zakaly, Shams A.M.Issa, Alaa M.Abd-Elnaiem
Research Department
Research Journal
Optical Materials
Research Pages
110613
Research Publisher
Elsevier
Research Rank
1
Research Vol
112
Research Website
https://www.sciencedirect.com/science/article/pii/S0925346720309538
Research Year
2021

Control optical characterizations of Ta+5–doped B2O3–Si2O–CaO–BaO glasses by irradiation dose

Research Abstract

Borosilicate glasses within 25B2O3–15Si2O–10CaO-(50-x)BaO-xTa2O5 system at different Ta2O5 contents (x = 0, 4, 8, 12, and 15 wt%) were synthesized via quenching technique. The effect of irradiation doses of both 10, and 40 kGy, as well as the Ta2O5 ratio on the structural and optical characteristics of the prepared glasses were studied. The investigations were carried out using UV–Vis–NIR spectrophotometer, differential scanning calorimetry (DSC), X-ray powder diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR) techniques. Physical parameters such as density, molar volumes, refractive index, optical bandgap, Urbach energy, optical density, extinction coefficient, optical sheet resistance, and thermal emissivity of 25B2O3–15Si2O–10CaO-(50-x)BaO-xTa2O5 samples with different irradiation doses were investigated. The results show that irradiation does not affect the crystal structure for the present samples even at 40 kGy. The optical aspects reveal the indirect allowed optical transition for the studied samples. The evaluated optical parameters show an effective influence towards both Ta2O5 content and irradiation does which forces the optical applications.

Research Authors
M.Rashad, H.A.Saudi, Hesham M.H.Zakaly, Shams A.M.Issa, Alaa M.Abd-Elnaiem
Research Department
Research Journal
Optical Materials
Research Member
Research Pages
110613
Research Publisher
Elsevier
Research Rank
1
Research Vol
112
Research Website
https://www.sciencedirect.com/science/article/pii/S0925346720309538
Research Year
2021

Mechanical Properties and Electrical Conductivity of Poly (methyl methacrylate)/Multi-walled Carbon Nanotubes Composites

Research Abstract

Carbon nanotubes (CNTs) remain one of the most efficient reinforcing material for enhanced mechanical and electrical properties. In this study, the effects of multi-walled CNTs (MWCNTs) fillers on mechanical, structural, and electrical properties of polymethyl methacrylate (PMMA)/MWCNTs composites were studied. The PMMA/MWCNTs composites, containing varying MWCNTs concentration of 0.1, 0.3, and 0.5 wt%, were prepared by a solution casting method. The mechanical properties of the composites such as tensile strength, elongation, Young modulus, tear resistance, fracture energy, impact strength, and hardness were investigated. Results showed that the mechanical properties of the composites were enhanced significantly. At 0.5 wt% MWCNTs, the tensile strength, elongation, tear strength, hardness, fracture energy and impact strength increased by 397%, 567%, 89%, 27%, 12%, and 36%, respectively …

Research Authors
Nadia A Ali, Seenaa I Hussein, Tesleem B Asafa, Alaa M Abd-Elnaiem
Research Department
Research Journal
Iranian Journal of Science and Technology, Transactions A: Science
Research Member
Research Pages
1567-1576
Research Publisher
Springer International Publishing
Research Rank
1
Research Vol
44
Research Website
NULL
Research Year
2020

Propolis improved the hepatic architecture by controlling stat-3 and stat-5 phosphorylation, and survivin expression in a mouse model of liver fibrosis

Research Abstract

Propolis has several biological/pharmacological properties. The current study investigated the potential hepatoprotective benefits of propolis in CCl4-treated mice. Three groups of male BALB/c mice (n=15/group) were used in the current study: group I comprised control mice, groups II was intraperitoneally injected with CCl4 (1.0 mL of 10% CCl4 dissolved in olive oil/kg body weight, twice/week for six weeks) for inducing liver fibrosis, group III was treated with CCl4 as in group II and then supplemented orally with the ethanol-soluble derivative of propolis (100 mg/kg body weight/day) for additional four weeks. The antifibrotic effects of propolis were assessed by histological analysis, western blotting, flow cytometry, and ELISA. The results indicated that the CCl4-treated mice exhibited histopathological alterations in the liver architecture with an increase in the numbers of Kupffer cells, a significant increase in the lymphocytes apoptosis and in the plasma nitric oxide, reactive oxygen species, C-reactive protein, and platelet derived growth factor levels, and a significant decrease in the plasma total glutathione level, as compared with the control group. The liver of CCl4-treated mice also exhibited a significant increase in the expression of collagen and survivin, upregulation of signal transducer and activator of transcription 3 (STAT3) phosphorylation, and downregulation of STAT5 phosphorylation. Interestingly, propolis abrogated significantly the hepatic collagen deposition, inflammatory signals, and oxidative stress, and improved the hepatic architecture in CCl4-treated mice nearly to the normal architecture observed in the control mice. In conclusion, our findings demonstrate the potential hepatoprotective effects of propolis in alleviating the liver fibrosis.

Research Authors
Eman Abdo Sayed; Hanan Waly; Khadiga Abdel-Hameed Hassan;
Gamal Badr
Research Department
Research Journal
Egyptian Journal of Zoology
Research Pages
NULL
Research Publisher
The Zoological Society of A. R. Egypt
Research Rank
2
Research Vol
NULL
Research Website
NULL
Research Year
2020

Propolis improved the hepatic architecture by controlling stat-3 and stat-5 phosphorylation, and survivin expression in a mouse model of liver fibrosis

Research Abstract

Propolis has several biological/pharmacological properties. The current study investigated the potential hepatoprotective benefits of propolis in CCl4-treated mice. Three groups of male BALB/c mice (n=15/group) were used in the current study: group I comprised control mice, groups II was intraperitoneally injected with CCl4 (1.0 mL of 10% CCl4 dissolved in olive oil/kg body weight, twice/week for six weeks) for inducing liver fibrosis, group III was treated with CCl4 as in group II and then supplemented orally with the ethanol-soluble derivative of propolis (100 mg/kg body weight/day) for additional four weeks. The antifibrotic effects of propolis were assessed by histological analysis, western blotting, flow cytometry, and ELISA. The results indicated that the CCl4-treated mice exhibited histopathological alterations in the liver architecture with an increase in the numbers of Kupffer cells, a significant increase in the lymphocytes apoptosis and in the plasma nitric oxide, reactive oxygen species, C-reactive protein, and platelet derived growth factor levels, and a significant decrease in the plasma total glutathione level, as compared with the control group. The liver of CCl4-treated mice also exhibited a significant increase in the expression of collagen and survivin, upregulation of signal transducer and activator of transcription 3 (STAT3) phosphorylation, and downregulation of STAT5 phosphorylation. Interestingly, propolis abrogated significantly the hepatic collagen deposition, inflammatory signals, and oxidative stress, and improved the hepatic architecture in CCl4-treated mice nearly to the normal architecture observed in the control mice. In conclusion, our findings demonstrate the potential hepatoprotective effects of propolis in alleviating the liver fibrosis.

Research Authors
Eman Abdo Sayed; Hanan Waly; Khadiga Abdel-Hameed Hassan;
Gamal Badr
Research Department
Research Journal
Egyptian Journal of Zoology
Research Member
Research Pages
NULL
Research Publisher
The Zoological Society of A. R. Egypt
Research Rank
2
Research Vol
NULL
Research Website
NULL
Research Year
2020

Propolis improved the hepatic architecture by controlling stat-3 and stat-5 phosphorylation, and survivin expression in a mouse model of liver fibrosis

Research Abstract

Propolis has several biological/pharmacological properties. The current study investigated the potential hepatoprotective benefits of propolis in CCl4-treated mice. Three groups of male BALB/c mice (n=15/group) were used in the current study: group I comprised control mice, groups II was intraperitoneally injected with CCl4 (1.0 mL of 10% CCl4 dissolved in olive oil/kg body weight, twice/week for six weeks) for inducing liver fibrosis, group III was treated with CCl4 as in group II and then supplemented orally with the ethanol-soluble derivative of propolis (100 mg/kg body weight/day) for additional four weeks. The antifibrotic effects of propolis were assessed by histological analysis, western blotting, flow cytometry, and ELISA. The results indicated that the CCl4-treated mice exhibited histopathological alterations in the liver architecture with an increase in the numbers of Kupffer cells, a significant increase in the lymphocytes apoptosis and in the plasma nitric oxide, reactive oxygen species, C-reactive protein, and platelet derived growth factor levels, and a significant decrease in the plasma total glutathione level, as compared with the control group. The liver of CCl4-treated mice also exhibited a significant increase in the expression of collagen and survivin, upregulation of signal transducer and activator of transcription 3 (STAT3) phosphorylation, and downregulation of STAT5 phosphorylation. Interestingly, propolis abrogated significantly the hepatic collagen deposition, inflammatory signals, and oxidative stress, and improved the hepatic architecture in CCl4-treated mice nearly to the normal architecture observed in the control mice. In conclusion, our findings demonstrate the potential hepatoprotective effects of propolis in alleviating the liver fibrosis.

Research Authors
Eman Abdo Sayed; Hanan Waly; Khadiga Abdel-Hameed Hassan;
Gamal Badr
Research Department
Research Journal
Egyptian Journal of Zoology
Research Member
Research Pages
NULL
Research Publisher
The Zoological Society of A. R. Egypt
Research Rank
2
Research Vol
NULL
Research Website
NULL
Research Year
2020

In situ preparation of palladium nanoclusters in cerium metal-organic frameworks Ce-MOF-808, Ce-UiO-66 and Ce-BTC as nanoreactors for room temperature Suzuki cross-coupling reaction

Research Abstract

NULL

Research Authors
Mostafa Farrag
Research Department
Research Journal
Microporous and Mesoporous Materials
Research Pages
110783
Research Publisher
Elsevier
Research Rank
1
Research Vol
312
Research Website
https://www.sciencedirect.com/science/article/abs/pii/S1387181120307836
Research Year
2021

Non-local correlation between two coupled qubits interacting
nonlinearly with a two-mode cavity: Bell function, Trace norm and
Bures distance quantifiers

Research Abstract

In this paper, we study the dynamics of two coupled qubits interacting with a two-mode parametric
amplifier cavity through the nonlinear interactions of the photon processes under the intrinsic
decoherence. The nonlinear unitary interactions lead to generating different types of nonlocal
correlations via Bell nonlocality, trace-norm measurement-induced non-locality (MIN), and Buresdistance
entanglement. Based on the intrinsic decoherence, the two-qubit states have stationary
amounts of the MIN-correlation and Bures distance entanglement with more stability. It is found that
the qubit–qubit interaction coupling is affected as additional decoherence. It leads to more oscillations
and stability. The enhancement of the amount of the generated nonlocal correlations depends on the
superposition of Barut-Girardello coherent states. The phenomenon of sudden birth/death and the
Bell non-locality can be enhanced when the two-mode parametric amplifier cavity is initially prepared
in the coherent states.

Research Authors
A-B. A. Mohamed, EM Khalil and S Abdel-Khalek
Research Department
Research Journal
Phys. Scr.
Research Member
Research Pages
025103
Research Publisher
IOP science
Research Rank
1
Research Vol
96
Research Website
https://doi.org/10.1088/1402-4896/abd27f
Research Year
2021
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