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- 저자 : M. Farsi (검색결과 5 건)
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Development of an integrated approach for Algerian building seismic damage assessment
Mehdi Boukri,Mohammed Naboussi Farsi,Ahmed Mébarki,Mohamed Belazougui 국제구조공학회 2013 Structural Engineering and Mechanics, An Int'l Jou Vol.47 No.4
This paper presents a framework for seismic damage evaluation for Algerian buildings adapted from HAZUS approach (Hazard-United States). Capacity and fragility curves were adapted to fit the Algerian building typologies (Reinforced Concrete structures, Confined or Non-Confined Masonry, etc). For prediction purposes, it aims to estimate the damages and potential losses that may be generated by a given earthquake in a prone area or country. Its efficiency is validated by comparing the estimated and observed damages in Boumerdès city, in the aftermath of Boumerdès earthquake (Algeria: May 21st 2003; Mw = 6.8). For this purpose, observed damages reported for almost 3,700 buildings are compared to the theoretical predictions obtained under two distinct modelling of the seismic hazard. In one hand, the site response spectrum is built according to real accelerometric records obtained during the main shock. In the other hand, the effective Algerian seismic code response spectrum (RPA 99) in use by the time of the earthquake is considered; it required the prior fitting of Boumerdès site PGA (Peak Ground Acceleration) provided by Ambraseys’ attenuation relationship.
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M. Farsi,A. Jahanmiri 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.3
In this work a water vapor-permselective alumina–silica composite membrane reactor is proposed to overcome the thermodynamic equilibrium limitations and increasing catalyst activity. A steady state heterogeneous model is developed to simulate the proposed configuration. To verify accuracy of the considered model, simulation results of a methanol reactor is compared with the industrial plant data. The membrane reactor benefits are: higher carbon dioxide conversion, higher quality of outlet product,higher catalyst activity. Genetic algorithm is employed to optimize the process performance considering methanol production as the objective function. This configuration has enhanced the methanol yield about 7% compared with conventional reactor.
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M. Farsi, A. Jahanmiri 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
The goal of this research is dynamic operability analysis of dual-membrane reactor considering catalyst deactivation to produce methanol. A dynamic heterogeneous one-dimensional model is developed to predict the performance of this configuration. In this configuration, a conventional reactor has been supported by a Pd/Ag membrane tube for hydrogen permeation and alumina–silica composite membrane tube to remove water vapor from the reaction zone. To verify the accuracy of the considered model, the results of conventional reactor are compared with the plant data. The main advantages of the dual-membrane reactor are: higher catalyst activity and lifetime, higher CO2 conversion and methanol production.
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M. Farsi,M.R. Rahimpour,A. Jahanmiri 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.5
In the isobutene synthesis process, coupling reaction and separation improves isobutene production and selectivity, reduces operation cost and lets to produce hydrogen. This study focuses on the steady state optimization of the isobutane dehydrogenation in hydrogen-permselective Pd/Ag based membrane reactors. The membrane reactors have been modeled heterogeneously based on the mass and energy conservation laws at steady state condition. The Genetic algorithm has been considered to optimize the operating condition of membrane reactors. Optimization results of membrane reactors are compared with conventional adiabatic reactors at the same catalyst loading. This optimal configuration has enhanced isobutene mole fraction about 16.4%.
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Al-Marzooqi, W.,Al-Farsi, M.A.,Kadim, I.T.,Mahgoub, O.,Goddard, J.S. Asian Australasian Association of Animal Productio 2010 Animal Bioscience Vol.23 No.12
Two experiments were conducted to evaluate the use of fish silage prepared from Indian oil sardines, Sardinella longiceps, as partial replacement of soybean meal as a sole source of protein for growing broiler chickens. The main objective of Experiment 1, an ileal digestibility assay, was to assess the nutritional value of fish silage compared with soybean meal for feeding broiler chickens. The two test ingredients, soybean meal and dried fish silage, were incorporated into semi-synthetic diets, as the only component containing protein. The ileal digestibility coefficients of amino acids of fish silage were considerably higher than those of soybean meal (p<0.001). The lower digestibility of amino acids from soybean meal was related to the presence of anti-nutritional factors such as trypsin inhibitors. Fish silage had higher levels of sulphur-containing amino acids than soybean meal. The objective of Experiment 2, a growth study, was to evaluate the effect of feeding fish silage on performance and meat quality characteristics of broiler chickens raised under closed and open-sided housing systems. Four diets containing various levels of fish silage (0, 10, 20 and 30%) were evaluated. Daily feed intake, body weight gain and feed conversion ratio were measured. At the end of Experiment 2, 96 birds were randomly selected and slaughtered to evaluate meat quality characteristics. Housing type had significant effects on feed intake and body weight gain (p<0.01). Birds in the open-sided house consumed 4.7% less amount of feed and gained 10.6% less than their counterparts in a closed house. Birds in both houses fed diets containing 10 and 20% fish silage gained more than birds fed 30% fish silage. The current study produced evidence that fish silage can replace up to 20% of soybean meal in broiler diets without affecting either growth performance or the sensory quality of broiler meat.
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