Numerical modeling of wave–mud interaction using projection method     

Kourosh Hejazi  Mohsen Soltanpour  Saeideh Sami 《Ocean Dynamics》2013,63(9-10):1093-1111

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Enhancement of Carbon Dioxide Capture by Amine‐Functionalized Multi‐Walled Carbon Nanotube     

Soodabeh Khalili  Ali Asghar Ghoreyshi  Mohsen Jahanshahi  Kasra Pirzadeh 《洁净——土壤、空气、水》2013,41(10):939-948

In this study, crude multi‐walled carbon nanotubes (MWCNT) was functionalized by a two‐step process; first using strong mixed acids (H₂SO₄/HNO₃) and then treatment with 1,3‐phenylenediamine (mPDA). The equilibrium adsorption of CO₂ on pristine MWCNT and amine functionalized MWCNT (MWCNT‐NH₂) were investigated. Experiments were preformed via application of volumetric method in a dual sorption vessel at temperature range of 298–318 K and pressures up to 40 bars. The results obtained indicated that the equilibrium uptake of CO₂ increased after functionalizing of MWCNT. The increase in CO₂ capture by MWCNT‐NH₂ was attributed to the existence of great affinity between CO₂ molecules and amine sites on this adsorbent at low pressures. The experimental data were analyzed by means of Freundlich and Langmuir adsorption isotherm models. The data obtained revealed a fast kinetics for the adsorption of CO₂ in which most of adsorption occurred at initial period of adsorption experiments. This renders MWCNT as a suitable adsorbent for practical applications. Values of isosteric heat of adsorption were evaluated based on Clausius–Clapeyron equation. The results demonstrated that both chemisorption and physisorption played important role in CO₂ adsorption on MWCNT‐NH₂, whereas the physisorption process was dominant for CO₂ adsorption on MWCNT.  相似文献   

Variability in the stellar initial mass function at high mass: coalescence models for starburst clusters     

Mohsen Shadmehri 《Monthly notices of the Royal Astronomical Society》2004,354(2):375-377

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Assessing Doppler velocities of Rankin Inlet F-region echoes     

Alexander V Koustov  Kale Colville  Robyn A D Fiori  Mohsen Ghezelbash 《极地研究(英文版)》2013,24(1)

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Post-Bam earthquake: recovery and reconstruction   总被引：3，自引：1，他引：2  

Mohsen Ghafory-Ashtiany  Mahmood Hosseini 《Natural Hazards》2008,44(2):229-241

This paper gives a brief explanation of the earthquake in Bam. It also reports on the rescue and relief operations, including the construction of emergency shelters and temporary housing, and on the country’s plan for the reconstruction of the city, which includes debris removal, the rebuilding of rural and urban residential and commercial units, the reconstruction of state and public buildings and public facilities such as schools, rural and urban water aqueducts and grids, the construction of a sewage system, power network and telecommunication system, the provision of water to orchards and farmlands, the renovation of industries and the revival of the cultural heritage, particularly the historical Bam citadel, among others. We also report briefly on the effect of the Bam earthquake on the Iran Earthquake Risk Reduction Strategy and actions.

Mohsen Ghafory-AshtianyEmail:

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Prediction leaching of potassium using the convective–dispersive and the convective log-normal transfer function models     

M. Jalali  D. L. Rowell 《Environmental Geology》2008,55(4):863-874

There is increasing concern about soil enrichment with K⁺ and subsequent potential losses following long-term application of poor quality water to agricultural land. Different models are increasingly being used for predicting or analyzing water flow and chemical transport in soils and groundwater. The convective–dispersive equation (CDE) and the convective log-normal transfer function (CLT) models were fitted to the potassium (K⁺) leaching data. The CDE and CLT models produced equivalent goodness of fit. Simulated breakthrough curves for a range of CaCl₂ concentration based on parameters of 15 mmol l⁻¹ CaCl₂ were characterised by an early peak position associated with higher K⁺ concentration as the CaCl₂ concentration used in leaching experiments decreased. In another method, the parameters estimated from 15 mmol l⁻¹ CaCl₂ solution were used for all other CaCl₂ concentrations, and the best value of retardation factor (R) was optimised for each data set. A better prediction was found. With decreasing CaCl₂ concentration the value of R is required to be more than that measured (except for 10 mmol l⁻¹ CaCl₂), if the estimated parameters of 15 mmol l⁻¹ CaCl₂ are used. The two models suffer from the fact that they need to be calibrated against a data set, and some of their parameters are not measurable and cannot be determined independently.  相似文献   

A Combined Remote Sensing–Numerical Modelling Approach to the Stability Analysis of Delabole Slate Quarry,Cornwall, UK     

Mohsen Havaej  John Coggan  Doug Stead  Davide Elmo 《Rock Mechanics and Rock Engineering》2016,49(4):1227-1245

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Textural relations,P-T path,polymetamorphism and also geodynamic significance of metamorphic rocks of the Aligudarz-Khonsar region,Sanandaj-Sirjan zone,Iran     

Somaye Karimi  Seyed Mohsen Tabatabaei Manesh 《Petrology》2016,24(1):100-115

The metamorphic rocks of the Aligudarz-Khonsar region can be divided into nine groups: slate, phyllite, sericite schist, biotite-muscovite schist, garnet schist, garnet-staurolite schist, staurolite schist, mylonitic granite, and marble. In this metamorphic region, four phases of metamorphism can be identified (dynamothermal, thermal, dynamic and retrograde metamorphism) and there are three deformation phases (D1, D2 and D3). Paleozoic pelagic shales experienced prograde metamorphism and polymetamorphism from the greenschist to amphibolite facies along the kyanite geotherm. The metapelites show prograde dynamothermal metamorphism from the greenschist to amphibolite facies. Maximum degree of dynamothermal metamorphism is seen in the Nughan bridge area. Also development of the mylonitic granites in the Nughan bridge area shows that dynamic metamorphism in this area was more intense than in other parts of the AligudarzKhonsar metapelitic zone. The chemical zoning of garnets shows three stages of growth and syn-tectonic formation. With ongoing metamorphism, staurolite appeared, and the rocks reached amphibolite facies, but the degree of metamorphism did not increase past the kyanite zone. Thus, metamorphism of the pelitic sediments occurred at the greenschist to amphibolite facies (kyanite zone). Thermodynamic studies of these rocks indicate that the metapelites in the Aligudarz-Khonsar region formed at 490–550°C and 0.47–5.6 kbar.  相似文献