مرور Volume 22, Issue 2 بر اساس عنوان
در حال نمایش موارد 1 - 12 از 12
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Computation of Earthquake Response via Fourier Amplitude Spectra
(Materials and Energy Research Center, 2009-08-01)A theoretical relation is presented between the seismological Fourier amplitude spectrumand the mean squared value of the elastic response, which is defined by Gaussian distribution. Byshifting a general process to its ...
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Dairy Wastewater Treatment using Three-Stage Rotating Biological Contactor (NRBC)
(Materials and Energy Research Center, 2009-08-01)Dairy wastewater is enriched in organic matter (about 45-72 g/l, COD) and also contains biodegradable carbohydrates. A three-stage system, NRBC was fabricated as a bench scale unit for lab experiments, to remove organic ...
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Elastico-Viscous Flow between Two Rotating Discs of Different Transpiration for High Reynolds Numbers (RESEARCH NOTE)
(Materials and Energy Research Center, 2009-08-01)The flow in an elastico-viscous fluid between two co-axial infinite rotating porous discs is considered for high cross flow Reynolds number. The discs are rotating with different angular velocity and the injection rate of ...
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Fabrication and Characterization of a New MEMS Capacitive Microphone using Perforated Diaphragm
(Materials and Energy Research Center, 2009-08-01)In this paper, a novel single-chip MEMS capacitive microphone is presented. The novelties of this method relies on the moveable aluminum (Al) diaphragm positioned over the backplate electrode, where the diaphragm includes ...
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Flexural Testing of High Strength Reinforced Concrete Beams Strengthened with CFRP Sheets
(Materials and Energy Research Center, 2009-08-01)The objective of this study is to investigate the effectiveness of externally bonded CFRP sheets to increase the flexural strength of reinforced high strength concrete (HSC) beams. Four-point bending flexural tests to ...
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Influence of Afterbody and Boundary Layer on Cavitating Flow
(Materials and Energy Research Center, 2009-08-01)The characteristics of a cavitation water tunnel test setup and the experiments of cavitation around different models are given in this paper. Models of test are formed from combination of head and variable length afterbody. ...
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Moisture Diffusion Properties of Fabric Composite (Glass Fiber/Epoxy Resin)
(Materials and Energy Research Center, 2009-08-01)In this study, the effect of hygrothermal conditioning on the moisture diffusion properties of the fabric composite (glass fiber/epoxy resin) was investigated. The water uptake of the specimens conditioned in humid environment ...
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Pulse Reverse Electrodeposition of Spherical Ni-MWCNT Composite Skein
(Materials and Energy Research Center, 2009-08-01)Watt’s bath and pulse reverse (PR) electrodeposition is used to produce spherical nickelmultiwall carbon nanotubes (Ni-MWCNT) of 2.00, 0.93, 1.63 and 6.71 μm diameter and a variety ofsize distributions. For 60 cycles, an ...
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Recovery of Methyl Acetoacetate from Antibiotic Production Plant's Waste Streams (TECHNICAL NOTE)
(Materials and Energy Research Center, 2009-08-01)Chemical recovery of methyl acetoacetate from the amoxicillin plant’s waste stream was investigated. In process of amoxicillin production for activation of amoxicillin molecule, hydrolysis takes place at final stage. As a ...
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Redistribution of Fibers in the Structure of Hollow Ring Spun Yarn
(Materials and Energy Research Center, 2009-08-01)Core yarn was spun by introducing a PVA multifilament as the core through the yarn forming zone of a ring spinning frame and viscose fibers as the sheath containing tracer fibers. The water soluble PVA multifilament was ...
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Structural Evolution of Al-20% (wt) Al2O3 System during Ball Milling Stages
(Materials and Energy Research Center, 2009-08-01)Production of nanostructured aluminum matrix composite powder by high energy ball milling is investigated. Scanning electron microscopy analysis as well as the tap and green density measurements were used to optimize the ...
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Thermodynamic Evaluation of Adsorption of Zinc Complex and ZnO Nano-Layer Prepared by TSCD Method Based on Langmuir Adsorption Model
(Materials and Energy Research Center, 2009-08-01)Zinc oxide thin films were deposited on soda-lime glass substrates from an aqueous zinccontaining complex by two-stage chemical deposition (TSCD) method. Longmuir adsorption model showed that the adsorption of atoms on the ...