Publications

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Journal Article
Abdelkawi, S. A., D. F. Ghoneim, W. Atoat, and Y. A. Badr, "193 nm ArF excimer laser and the potential risk for cataract formation", Journal of Applied Sciences Research, vol. 6, no. 7, pp. 796-805, 2010. AbstractWebsite
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Khames, G., A. A. Mona, M. H. Gihan, A. S. Sadik, and Y. Badr, "Application of laser microbeam cell surgery and Agrobacterium-mediated gene transformation systems in melon (Cucumis melo L)", Pakistan Journal of Biotechnology, vol. 6, no. 1-2, pp. 45-54, 2009. AbstractWebsite
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Husseiny, M. I., M. A. El-Aziz, Y. Badr, and M. A. Mahmoud, "Biosynthesis of gold nanoparticles using Pseudomonas aeruginosa", Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, vol. 67, no. 3-4, pp. 1003-1006, 2007. AbstractWebsite
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Moghadam, H. S., M. Khademi, Z. Hu, R. J. Stern, J. F. Santos, and Y. Wu, "Cadomian (Ediacaran–Cambrian) arc magmatism in the ChahJam–Biarjmand metamorphic complex (Iran): Magmatism along the northern active margin of Gondwana", Gondwana Research, vol. 27, no. 1, pp. 439 - 452, 2015. AbstractWebsite

Abstract The ChahJam–Biarjmand complex (CJBC), flanked by the Alborz Mountains in the north and the Lut–Tabas block to the south, is part of Central Iranian block, where the oldest continental crust of Iran is found. This complex contains granitic to tonalitic orthogneissic rocks (old plutons) and associated metasediments, amphibolites and paragneisses. Metamorphosed granitic and granodioritic dikes intrude orthogneisses as well as metasediments and are abundant close to the plutons (orthogneissic rocks). Based on the results of bulk rock trace and rare earth elements, the orthogneissic rocks are inferred to have crystallized from subduction-related melts. Amphibolites also have subduction-related signatures and are inferred to have formed both as metamorphosed volcanoclastic sediments and as attenuated basic dikes. The presence of para-amphibolites associated with paragneisses and metasediments (mica schists) could represent a sedimentary basin filled with magmatic arc erosional products. U–Pb zircon dating of the ChahJam–Biarjmand rocks yielded 238U/206Pb crystallization ages of ca. 550 to 530 Ma (Ediacaran–early Cambrian). Sr–Nd isotope systematics on whole rocks (εNd(t) = − 2.2 to − 5.5) and zircon Hf isotope results indicate that \{CJBC\} Cadomian granitic rocks contain older, possible Mesoproterozoic, continental crust in their source. The ChahJam–Biarjmand granitic–tonalitic gneissic rocks are coeval with other similar-aged metagranites and gneisses within Iranian basement exposed in Central Iran, the Sanandaj–Sirjan Zone and the Alborz Mountains, as well as in the Tauride–Anatolide platform in western Anatolia and in \{NW\} Turkey. All these dispersed Cadomian basement rocks are interpreted to show fragments of Neoproterozoic–early Cambrian continental arcs bordering the northern active margin of Gondwana.

Moghadam, H. S., M. Khademi, Z. Hu, R. J. Stern, J. F. Santos, and Y. Wu, "Cadomian (Ediacaran–Cambrian) arc magmatism in the ChahJam–Biarjmand metamorphic complex (Iran): Magmatism along the northern active margin of Gondwana", Gondwana Research, vol. 27, no. 1, pp. 439 - 452, 2015. AbstractWebsite

Abstract The ChahJam–Biarjmand complex (CJBC), flanked by the Alborz Mountains in the north and the Lut–Tabas block to the south, is part of Central Iranian block, where the oldest continental crust of Iran is found. This complex contains granitic to tonalitic orthogneissic rocks (old plutons) and associated metasediments, amphibolites and paragneisses. Metamorphosed granitic and granodioritic dikes intrude orthogneisses as well as metasediments and are abundant close to the plutons (orthogneissic rocks). Based on the results of bulk rock trace and rare earth elements, the orthogneissic rocks are inferred to have crystallized from subduction-related melts. Amphibolites also have subduction-related signatures and are inferred to have formed both as metamorphosed volcanoclastic sediments and as attenuated basic dikes. The presence of para-amphibolites associated with paragneisses and metasediments (mica schists) could represent a sedimentary basin filled with magmatic arc erosional products. U–Pb zircon dating of the ChahJam–Biarjmand rocks yielded 238U/206Pb crystallization ages of ca. 550 to 530 Ma (Ediacaran–early Cambrian). Sr–Nd isotope systematics on whole rocks (εNd(t) = − 2.2 to − 5.5) and zircon Hf isotope results indicate that \{CJBC\} Cadomian granitic rocks contain older, possible Mesoproterozoic, continental crust in their source. The ChahJam–Biarjmand granitic–tonalitic gneissic rocks are coeval with other similar-aged metagranites and gneisses within Iranian basement exposed in Central Iran, the Sanandaj–Sirjan Zone and the Alborz Mountains, as well as in the Tauride–Anatolide platform in western Anatolia and in \{NW\} Turkey. All these dispersed Cadomian basement rocks are interpreted to show fragments of Neoproterozoic–early Cambrian continental arcs bordering the northern active margin of Gondwana.

Badr, Y., Z. I. Ali, A. H. Zahran, and R. M. Khafagy, "Characterization of gamma irradiated polyethylene films by DSC and X-ray diffraction techniques", Polymer International, vol. 49, no. 12, pp. 1555-1560, 2000. AbstractWebsite
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Badr, Y. A., S. B. El‐Giziri, T. M. Hammad, and P. E. Tomaszewski, "Comment on the Paper “On the Effect of Doping on the Mechanism of Phase Transition of Some Inorganic Compounds”", physica status solidi (a), vol. 112, no. 1, pp. K13-K14, 1989. AbstractWebsite
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Tomaszewski, P. E., "Comments on the “effect of γ-radiation on the phase transition temperature of Li0.5(NH4)0.5SO4” by Badr and El-Guiziri", Journal of Physics and Chemistry of Solids, vol. 51, no. 12, pp. 1433 -, 1990. AbstractWebsite
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Hazhir, S., Y. A. a Badr, and J. N. Darabi, "Comparison of intranasal desmopressin and intramuscular tramadol versus pethidine in patients with renal colic", Urology Journal, vol. 7, no. 3, pp. 148-151, 2010. AbstractWebsite
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Abdelsalam, E., M. Samer, Y. A. Attia, M. A. Abdel-Hadi, H. E. Hassan, and Y. Badr, "Comparison of nanoparticles effects on biogas and methane production from anaerobic digestion of cattle dung slurry", Renewable Energy, vol. 87, pp. 592-598, 2016. AbstractWebsite
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Badr, Y. A., and R. Kamel, "Comparitive study of structure changes with temperature in univalent and divalent ionic nitrate crystals", Journal of Physics and Chemistry of Solids, vol. 41, no. 10, pp. 1127-1131, 1980. AbstractWebsite
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Manikyamba, C., S. Ganguly, A. Saha, M. Santosh, R. M. Singh, and S. D. V. Rao, "Continental lithospheric evolution: Constraints from the geochemistry of felsic volcanic rocks in the Dharwar Craton, India", Journal of Asian Earth Sciences, vol. 95, pp. 65 - 80, 2014. AbstractWebsite

Abstract Felsic magmatism associated with ocean–ocean and ocean–continent subduction processes provide important evidence for distinct episodes of crust-generation and continental lithospheric evolution. Rhyolites constitute an integral component of the tholeiitic to calc-alkaline basalt–andesite–dacite–rhyolite (BADR) association and contribute to crustal growth processes at convergent plate margins. The evolution of the Dharwar Craton of southern peninsular India during Meso- to Neoarchean times was marked by extensive development of greenstone belts. These granite-greenstone terranes have distinct volcano-sedimentary associations consistent with their geodynamic setting. The present study deals with geochemistry of rhyolites from the Chitradurga-Shimoga greenstone belts of western (WDC) and the Gadwal-Kadiri greenstone belts of eastern (EDC) sectors of Dharwar Craton to compare and evaluate their petrogenesis and geodynamic setting and their control on the continental lithospheric evolution of the Dharwar Craton. At a similar range of SiO2, Al2O3, Fe2O3, the rhyolites of \{WDC\} are more potassic, whereas the \{EDC\} rhyolites are more sodic and less magnesian with slight increase in TiO2. Minor increase in MgO content of \{WDC\} rhyolites reflects their ferromagnesian trace elements which are comparatively lower in the rhyolites of EDC. The relative enrichment in \{LILE\} (K, Rb) and depletion in \{HFSE\} (Nb, Ta, Zr, Hf) marked by negative Nb–Ta, Zr–Hf and Ti anomalies endorse the convergent margin processes for the generation of rhyolites of both the sectors of Dharwar Craton. The high silica potassic rhyolites of Shimoga and Chitradurga greenstone belts of \{WDC\} showing prominent negative Eu and Ti anomalies, flat \{HREE\} patterns correspond to Type 3 rhyolites and clearly point towards their generation and emplacement in an active continental margin environment. The geochemical characteristics of Gadwal and Kadiri rhyolites from eastern Dharwar Craton marked by aluminous compositions with low and fractionated \{HREE\} patterns and minor negative Eu anomalies are in conformity with Type 1 rhyolites and suggest that they were erupted in an intraoceanic island arc system. The overall geochemical systematics of the rhyolites from both the sectors of Dharwar Craton suggest a change in the geodynamic conditions from intraoceanic island arc of eastern Dharwar Craton and an active continental margin of western Dharwar marked by ocean–ocean subduction and migration of oceanic arc towards a continent followed by arc-continent collision that contributed for the evolution of continental lithosphere in the Dharwar Craton.

Salem, H. G., M. S. Mansour, Y. Badr, and W. A. Abbas, "CW Nd:YAG laser cutting of ultra low carbon steel thin sheets using O2 assist gas", Journal of Materials Processing Technology, vol. 196, no. 1-3, pp. 64-72, 2008. AbstractWebsite
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El‐Kabbany, E., Y. Badr, M. Tosson, S. Taha, and S. Mahrous, "A Detailed IR Study of the Order‐Disorder Phase Transition of AgNO3", physica status solidi (a), vol. 94, no. 1, pp. 35-43, 1986. AbstractWebsite
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Battisha, I. K., Y. Badr, N. M. Shash, M. G. El-Shaarawy, and A. G. A. Darwish, "Detection of up-conversion in nano-structure BaTiO3 co-doped with Er3+ and Yb3+ ions", Journal of Sol-Gel Science and Technology, vol. 53, no. 3, pp. 543-550, 2010. AbstractWebsite
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Prieto-Blanco, M. C., N. Jornet-Martínez, Y. Moliner-Martínez, C. Molins-Legua, R. Herráez-Hernández, V. J. Andrés, and P. Campins-Falcó, "Development of a polydimethylsiloxane–thymol/nitroprusside composite based sensor involving thymol derivatization for ammonium monitoring in water samples", Science of The Total Environment, vol. 503–504, pp. 105 - 112, 2015. AbstractWebsite

Abstract This report describes a polydimethylsiloxane (PDMS)-thymol/nitroprusside delivery composite sensor for direct monitoring of ammonium in environmental water samples. The sensor is based on a \{PDMS\} support that contains the Berthelot's reaction reagents. To prepare the PDMS–thymol/nitroprusside composite discs, thymol and nitroprusside have been encapsulated in the \{PDMS\} matrix, forming a reagent release support which significantly simplifies the analytical measurements, since it avoids the need to prepare derivatizing reagents and sample handling is reduced to the sampling step. When, the PDMS–thymol/nitroprusside composite was introduced in water samples spontaneous release of the chromophore and catalyst was produced, and the derivatization reaction took place to form the indothymol blue. Thus, qualitative analysis of NH4+ could be carried out by visual inspection, but also, it can be quantified by measuring the absorbance at 690 nm. These portable devices provided good sensitivity (LOD < 0.4 mg L− 1) and reproducibility (RSD < 10%) for the rapid detection of ammonium. The PDMS–NH4+ sensor has been successfully applied to determine ammonium in water samples and in the aqueous extracts of particulate matter \{PM10\} samples. Moreover, the reliability of the method for qualitative analysis has been demonstrated. Finally, the advantages of the PDMS–NH4+ sensor have been examined by comparing some analytical and complementary characteristics with the properties of well-established ammonium determination methods.

Elzanfaly, E. S., S. A. Hassan, M. Y. Salem, and B. A. El-Zeany, "Different signal processing techniques of ratio spectra for spectrophotometric resolution of binary mixture of bisoprolol and hydrochlorothiazide; a comparative study", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 140, pp. 334 - 343, 2015. AbstractWebsite

Abstract Five signal processing techniques were applied to ratio spectra for quantitative determination of bisoprolol (BIS) and hydrochlorothiazide (HCT) in their binary mixture. The proposed techniques are Numerical Differentiation of Ratio Spectra (ND-RS), Savitsky–Golay of Ratio Spectra (SG-RS), Continuous Wavelet Transform of Ratio Spectra (CWT-RS), Mean Centering of Ratio Spectra (MC-RS) and Discrete Fourier Transform of Ratio Spectra (DFT-RS). The linearity of the proposed methods was investigated in the range of 2–40 and 1–22 μg/mL for \{BIS\} and HCT, respectively. The proposed methods were applied successfully for the determination of the drugs in laboratory prepared mixtures and in commercial pharmaceutical preparations and standard deviation was less than 1.5. The five signal processing techniques were compared to each other and validated according to the İCH\} guidelines and accuracy, precision, repeatability and robustness were found to be within the acceptable limit.

Badr, Y. A., F. El‐Kabbany, and M. Tosson, "DTA and dielectric study of the high temperature phase of Na2SO4", physica status solidi (a), vol. 53, no. 1, pp. K51-K55, 1979. AbstractWebsite
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AbdelAziem, A., K. M. El-Katib, M. A. Hafez, and Y. Badr, "Effect of annealing on La0.8Sr0.2MnO3 thin films prepared by pulsed laser deposition", Spectrochimic a Acta- Part A:Molecular and biomolecular spectroscopy, 2019.
Badr, Y., A. S. Elwanees, and M. A. Mahmoud, "The effect of delay time on the CO and CH3 radicals resulting from the photolysis of acetone by 193 nm excimer laser", Journal of Photochemistry and Photobiology A: Chemistry, vol. 165, no. 1-3, pp. 187-191, 2004. AbstractWebsite
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Gaffar, M. A., Y. A. Badr, and A. M. Mebed, "Effect of doping on the structural changes associated with the high temperature phase transition of LiNH4SO4 crystals", physica status solidi (a), vol. 148, no. 1, pp. 143-152, 1995. AbstractWebsite
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Badr, Y., A. Salah, and I. K. Battisha, "Effect of Europium ion concentrations on the photoluminescence emission of nano-crystalline BaTiO3prepared by sol-gel technique", Journal of Sol-Gel Science and Technology, vol. 34, no. 3, pp. 219-226, 2005. AbstractWebsite
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Morimoto, Y., D. He, W. Hijikata, T. Shinshi, T. Nakai, and N. Nakamura, "Effect of high-frequency orbital and vertical oscillations of the laser focus position on the quality of the cut surface in a thick plate by laser beam machining", Precision Engineering, vol. 40, pp. 112 - 123, 2015. AbstractWebsite

Abstract In laser beam machining with oxygen gas, striations are formed on the cut surface due to the cyclic oxidization reaction, which is affected by the cutting conditions and the thermal properties of the workpiece. The formation of striations causes an increase in surface roughness. In order to reduce the surface roughness, we propose controlling the formation of striations by utilizing multi-DOF oscillation of the focus position of the laser. In this paper, we construct a laser machining system in which positioning control of the focus position is achieved by driving the focal lens. The effect of orbital oscillation of the laser focus position parallel to the top surface of the workpiece and vertical oscillation perpendicular to this surface on the formation of striations was evaluated by performing laser cutting tests on thick mild steel plates. The experimental results show that control of the formation of striations can be realized by choosing the appropriate oscillation conditions. The surface roughness with oscillation was less than half that without oscillation.

Abdelsalam, E. M., Y. A. Attia, H. E. Hassan, and Y. Badr, "Effect of laser irradiation and Ni nanoparticles on biogasproductionfrom Anaerobic Digestion of Slurry", Waste and Biomass Valorization, 2019.