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Sonia Jam Masume Ghalbi Ahangary Ahmad Tavasoli Kambiz Sadaghiani Ali Nakhaei Pour 《Reaction Kinetics and Catalysis Letters》2006,89(1):71-79
Summary An integrated process for producing liquid fuels from synthesis gas via a two-stage Fischer-Tropsch (FT) reaction is disclosed. An iron catalyst was used in the first bed of a fixed-bed reactor
followed by a ruthenium promoted cobalt catalyst in the second bed. The activity and selectivity of the dual-bed system were
assessed and compared with those using catalysts in a single bed system, separately. The methane selectivity in the dual-bed
reactor was about 11% less compared to that of the single-bed system. The C5+ selectivity for the dual-bed reactor was 19.7% higher than that of the single-bed system. 相似文献
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Davar A. Azarafza R. Fayez M. S. Fallahi S. Jam J. E. 《Mechanics of Composite Materials》2021,57(2):181-204
Mechanics of Composite Materials - Equilibrium equations of a rib grid-stiffened composite cylindrical shell reinforced with carbon nanotubes (CNTs) are derived based on the first-order shear... 相似文献
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Ummi Kalthum Azlan Ahmed Mediani Emelda Rosseleena Rohani Xiaohui Tong Rongchun Han Norazlan Mohmad Misnan Faidruz Azura Jam Hamidun Bunawan Murni Nazira Sarian Hamizah Shahirah Hamezah 《Molecules (Basel, Switzerland)》2022,27(18)
Moringa oleifera is an ancient remedy plant, known as the miraculous plant due to its many prominent uses and significant health benefits. It is a nutrient-rich plant, with exceptional bioactive compounds, such as polyphenols that possess several medicinal properties. Many significant studies have been carried out to evaluate the ethnomedicinal and pharmacological properties of M. oleifera in various applications. Therefore, this comprehensive review compiles and summarizes important findings from recent studies on the potential properties of different parts of M. oleifera. The pharmacological properties of M. oleifera have been studied for various potential biological properties, such as cardio-protective, anti-oxidative, antiviral, antibacterial, anti-diabetic and anti-carcinogenic effects. Therefore, the potential of this plant is even more anticipated. This review also highlights the safety and toxicity effects of M. oleifera treatment at various doses, including in vitro, in vivo and clinical trials from human studies. 相似文献
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Jam Farhoomand Robert E. McMurray Jr. Eugene Haller E. Bauser I. Silier 《International Journal of Infrared and Millimeter Waves》1995,16(6):1051-1064
In this paper we report the results of an extensive study on the far-infrared photoconductivity of high purityn-type GaAs. The crystal, which was grown at Max-Plank-Institute for Solid State Physics using liquid-phase epitaxy, exhibited the fine structures of the excited state transitions of the residual shallow level impurities. The major peak in the spectral response belongs to the 1s-2p transition, with its responsivity about thirty five times higher than the continuum. At 3.4K detector temperature, 625 mV bias, and 100 Hz chopping frequency the detector responsivity at 35.4 cm–1 (279 µm) was measured to be 0.017 A/W. Under these same conditions, the NEP was 5.9×10–14 W/Hz. The (DC) dark current at 25 mV bias was 5.6×10–14 A. 相似文献
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Jam Farhoomand Herbert M. Pickett 《International Journal of Infrared and Millimeter Waves》1987,8(5):441-447
We report the generation of 1.25 watts of CW laser power at the 119 m (2522.8 GHz) methanol line. The maximum frequency fluctuation of the free running laser is less than ±100 KHz per hour. 相似文献
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In this paper, the flow field of a third-grade non-Newtonian fluid in the annulus of rotating concentric cylinders has been investigated in the presence of magnetic field. For this purpose, the constitutive equation of such a fluid flow was simplified, and the existence of the solution to the governing equation was established using Schauder's fixed point theorem. Using the finite difference method, the numerical solution of the non-dimensionalized form of the established governing equation was obtained. The effect of sundry parameters such as the rotating speed of the cylinders, the physical properties of fluid, and magnetic field intensity on the fluid velocity field was studied as well. 相似文献
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Experimental studies of dielectric relaxation in the nematic and isotropic phases of 6CB (4-hexyl-4′-cyanobiphenyl) and two mixtures of 6CB perturbed by 160 Å hydrophobic silica aerosil are presented. The measurements have been made from 1 MHz to 1 GHz in the temperature range from 19 to 40°C. For bulk 6CB, the dynamic aspect in the isotropic phase as well as the principal dielectric permittivities ε ∥ * (ω) and ε ┴ * (ω) in the nematic phase have been fully explored. For the mixtures, measurements on the isotropic phase and also on homeotropically aligned samples in the nematic phase have been made, and these results are systematically compared with those for the bulk. The possible molecular reorientational movements corresponding to the different absorption domains in the dielectric spectrum are discussed and compared with the previously proposed interpretations. 相似文献
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The governing equations for a free dynamic response of a symmetrically laminated composite shell are used to analyze a nonlinear
differential panel. The FEM and the Lindstedt–Poincare perturbation technique are invoked to construct a uniform asymptotic
expansion of the solution to a nonlinear differential equation ofmotion. A comparison between numerical and finite-element
methods for analyzing a symmetrically laminated graphite/epoxy shell panel is performed to show that the nonlinearities are
of hardening type and are more repeated for smaller opening angles. It is also shown that large-amplitude motions are dominated
by lower modes. 相似文献