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Frontiers of Environmental Science & Engineering 2020年第4期14卷 173-188页

作者： Nima Kamali Abdollah rashidi Mehrabadi Maryam Mirabi mohammad Ali Zahed Civil Water and Environmental Engineering FacultyShahid Beheshti University A.C.TehranIran Cell and Molecular Biology Department Faculty of Biological SciencesKharazmi UniversityTehranIran

The effectiveness of phosphate(P)removal from aqueous solutions was investigated by novel low-cost biochars synthesized from vinasse and functionalized with calcined *** vinasse-derived biochar,synthesized via pyrolysis at different temperatures,showed easy preparation and a large surface *** novel vinasse biochar nanocomposites were prepared by adding dolomite to the vinasse biochars with different weight percentages(10,20 and 30%).The characteristics of the prepared materials were identified for further understanding of the inherent adsorption mechanism between P ions and vinasse ***-dolomite nanocomposite was very effective in the adsorption of P species from aqueous *** effect of the operational factors on Vinasse-dolomite nanocomposite was explored by applying response surface methodology(RSM).According to RSM results,the optimum condition was achieved to be contact time 90(min),250(mg/L)of P concentration and pH *** isotherm and kinetic studies were applied on experimental data to understand the adsorption *** Vinasse-dolomite nanocomposite revealed preferential P species adsorption in the presence of co-existing *** P species could be recovered by 1.0 MHC 1 where the efficiency was not affected up to the fifth *** P-loaded Vinasse-dolomite nanocomposite was successfully tested on a plant;it significantly improved its growth and proved its potency as a P-based fertilizer substitute.

关键词： Biochar Vinasse Dolomite Phosphate Fertilizer

Spectrofluorimetric Determination of Cu^2＋ Using New Fluorogenic Reagent

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Chinese Journal of Chemistry 2005年第2期23卷 160-165页

作者： mohammad-HUSSEIN,Sorouraddin mohammad-REZA,rashidi BEHROOZ,Shabani EBRAHIM,Ghorbani-Kalhor AnalyticalChemistryDepartment FacultyofChemistryTabrizUniversityP.O.Box51664TabrizIran DrugAppliedResearchCenter TabrizUniversityofMedicalScienceTabrizIran InorganicChemistryDepartment FacultyofChemistryTabrizUniversityTabrizIran

A new synthesized fluorogenic reagent, 8-[(2-pyridine)methylideneamino] quinoline (PMAQ), was utilized for spectrofluorimetric determination of Cu(II) at trace levels. PMAQ, a good fluorogenic reagent, though insoluble in water, but is soluble in ethanol and 20% ethanol-water. The excitation and the fluorescence wavelengths of PMAQ were 310 and 434 nm respectively. When the reagent was complexed with Cu(II), the fluorescence intensity decreased proportionally with the concentration of Cu(II) at pH 4.5 by a static quenching effect. The highest sensitivity to Cu2+ determination was shown to be at PMAQ concentration of 1.0 X 10(-5) mol.L-1. In order to enhance the quenching effect, the Cu(II)-PMAQ complex solution was kept at 22 degreesC for 20 min. Though the interferences by Co(II) and Fe(III) were very serious, they were however, completely eliminated by being masked with oxalate and ascorbate ions respectively. The linear dynamic range for Cu(II) determination was between 25-441 mug.L-1 with the detection limit of 18 mug.L-1 (RSD=3.7%, n=6). The proposed method was successfully applied to the determination of Cu(II) in real samples including human blood serum, commercial tea and wheat flour.

关键词： copper determination fluorogenic reagent spectrofluorimetry

Genetic algorithm application for matching ordinary black oil PVT data

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Petroleum Science 2012年第2期9卷 199-211页

作者： mohammad Taghizadeh Sarvestani Behnam Sedaee Sola Fariborz rashidi Department of Petroleum Engineering Amirkabir University of Technology Tehran Iran Institute of Petroleum Engineering University of Tehran Tehran Iran Department of Chemical Engineering Amirkabir University of Technology Tehran Iran

In the study of reservoirs, it is vital that we have a realistic physical model of the reservoir fluid that accurately describes the hydrocarbon system and its properties. The available equations of state （EOS） to model the fluid phase behavior have some inherent deficiencies that may cause erroneous predictions for real reservoir fluids, so these models should be tuned against experimental data by adjusting some parameters. Since there are many matching parameters, tuning the EOS against experimental data is a tedious and difficult work. In this study, a genetic algorithm as an optimization technique is used to solve this regression problem. This study presents a new method that uses a specially designed genetic algorithm to search for suitable regression parameters to match the EOS against measured data. The proposed method has been tested on three real black oil samples. The results show the surprising performance of the developed genetic algorithm to match the experimental data of the selected fluid samples. The main advantage of the used method is its high speed in finding a solution. Also, finding more than one solution, working automatically, confining the role of experts to the last stage, reducing costs and having the possibility of evaluating the different situations are the other advantages of this method to match ordinary black oil PVT data and makes it an ideal method to implement as an automatic EOS tuning algorithm for black oils.

关键词： Equations of state (EOS) tuning genetic algorithms black oil chromosome regression

Real-world and bottom-up methodology for emission inventory development and scenario design in medium-sized cities

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Journal of Environmental Sciences 2023年第5期127卷 114-132页

作者： Leila Khazini Mina Jamshidi Kalajahi Yousef rashidi Seyed mohammad Mahdi Mirzaei Ghomi Faculty of Chemical and Petroleum Engineering University of TabrizTabrizIran Environmental Sciences Research Institute Shahid Beheshti UniversityIran Department of the Environment(DOE) Head of National Center of Air pollution and Climate ChangeTehranIran

Efficient management of air quality requires a comprehensive emission inventory to support decision-making on air quality *** article presents a comprehensive framework for detailed emission inventory development in cities with low-quality basic data,which examines the emission of primary criteria pollutants(CO,NO_(x),SO_(2),PM_(2.5),PM_(10),and VOC)from mobile sources,residential,commercial,and public services,fuel stations,transport terminals,energy conversion sections,and *** research was applied to Tabriz in Northwest Iran,one of the polluted medium-sized cities with a population of 1.77 *** show the city daily emission per capita is 569.8 g of CO,68.6 g of NO_(x),38.6 g of VOC,17.6 g of SO_(x),and 3.7 g of *** emissions accounted for 98%of CO,91%of VOCs,61%of NO_(x),and 56%of PM;meaning alternative policy strategies in vehicles would reduce emissions *** applicable and effective scenarios in transport and one concerning stationary sourceswere proposed and reduction potential of themwas *** of the public transport improvement and replacement of old passenger cars were founded the key *** two alternatives decrease 14 and 2 tons of SO_(2) and 6797 and 2394 tons of NO_(x) annually with the cost of$99.5 MM and$366.5 MM,*** findings of this study provides the choice of travel method by each citizen is a function of cost,speed,comfort and safety of travel;therefore,all the requirements of any scenarios must be fully considered in the implementation step.

关键词： Emission inventory Vehicular sources Mitigation strategies Stationary sources Urban air pollution

Enduring effect of permeability texture for enhancing accuracy and reducing uncertainty of reservoir fluid flow through porous media

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Petroleum Science 2020年第1期17卷 118-135页

作者： Arash Azamifard Fariborz rashidi mohammadreza Pourfard mohammad Ahmadi Bahram Dabir Department of Petroleum Engineering Amirkabir University of Technology424 Hafez AveTehranIran Department of Chemical Engineering Amirkabir University of Technology424 Hafez AveTehranIran Department of Electrical Engineering Amirkabir University of Technology424 Hafez AveTehranIran

Modeling reservoir permeability is one of the crucial tasks in reservoir simulation ***,it is done by kriging-based *** rigorous modeling of the permeability results in more reliable outputs of the reservoir ***,a new category of geostatistical methods has been used for this purpose,namely multiple point statistics(MPS).By this new category of permeability modeling methods,one is able to predict the heterogeneity of the reservoir permeability as a continuous *** methods consider the direction of property variation in addition to the distances of known locations of the *** this study,the reservoir performance of a modified version of the SPE 10 solution project as a pioneer case is used for investigating the efficiency of these methods and paralleling them with the kriging-based *** this way,the permeability texture concept is introduced by applying some MPS *** study is accomplished in the conditions of real reservoir dimensions and velocities for the whole reservoir life.A continuous training image is used as the input of calculation for the permeability *** results show that the detailed permeability of the reservoir as a continuous variable makes the reservoir simulation show the same fluid front movement and flooding behavior of the reservoir similar to the reference case with the same permeability *** MPS methods enable the reservoir simulation to reproduce the fluid flow complexities such as bypassing and oil trapping during water flooding similar to the reference ***,total oil production is predicted with higher accuracy and lower *** studied cases are identical except for the permeability *** histograms and variograms of permeabilities for the studied reservoir are quite similar,but the performance of the reservoir shows that kriging-based method results have slightly less accuracy than some MPS ***,it results in lower

关键词： Multiple point statistics Permeability modeling Fluid flow in porous media Permeability texture

Hydrocarbon Vertical Continuity Evaluation in the Cretaceous Reservoirs of Azadegan Oilfield, Southwest of Iran: Implications for Reservoir Geochemistry

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Acta Geologica Sinica(English Edition) 2020年第3期94卷 847-860页

作者： Bahram ALIZADEH Mehrab rashidi Alireza ZARASVANDI Seyed Rasoul SEYEDALI mohammad Hasan ALIEE Department of Geology Faculty of Earth SciencesShahid Chamran University of AhvazAhvazIran Petroleum Geology and Geochemistry Research Center(PGGRC) Shahid Chamran University of AhvazAhvazIran Geochemistry Department Exploration DirectorateNational Iranian Oil Company(NIOC)TehranIran Geophysics Department Exploration DirectorateNational Iranian Oil Company(NIOC)TehranIran

A collection of data obtained from analytical methods in geochemistry along with the reservoir engineering and geologic data were used to investigate the reservoir continuity in the Cretaceous Fahliyan, Gadavan, Kazhdumi and Sarvak reservoirs of the super-giant Azadegan oilfield, SW Iran. The geochemical data indicate that the oil samples, with medium to high level of thermal maturity, have been generated from the anoxic marine marl/carbonate source rock(s). The Sargelu(Jurassic) and Garau(Cretaceous) formations are introduced as the main source rocks for the studied oils. The dendrogram obtained from the cluster analysis of high-resolution gas chromatography data introduces two main oil groups including Fahliyan reservoir, and Kazhdumi along with Sarvak/Gadvan reservoirs. This is confirmed by C7 Halpern star diagram, indicating that, the light oil fraction from Fahliyan reservoir is distinct from the others. Also, different pressure gradient of the Fahliyan Formation(over-pressured) relative to other reservoirs(normally-pressured) show the presence of compartments. The relation between toluene/n-heptane and n-heptane/methylcyclohexane represents the compartmentalization due to maturation/evaporative fractionation for Fahliyan and water washing for other studied reservoirs. Also, the impermeable upper part of the Fahliyan Formation and thin interbedded shaly layers in the Kazhdumi, Sarvak and Gadvan formations have controlled reservoir compartmentalization.

关键词： reservoir continuity geochemistry pressure gradient oil-oil correlation Azadegan oilfield Abadan Plain

Tectonic paleostress field and its impact on the geodynamic evolution of Central Iran, case study: the Shotori Mountain

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Journal of Mountain Science 2023年第10期20卷 3018-3034页

作者： Razieh ABBASPOUR Seyed Morteza MOUSAVI Ahmad rashidi mohammad Mahdi KHATIB Shahram SHAFIEIBAFTI Department of Geology University of BirjandBirjand ***Iran Department of Earthquake Research Shahid Bahonar University of KermanKerman ***Iran International Institute of Earthquake Engineering and Seismology Tehran ***Iran Department of Geology Shahid Bahonar University of KermanKerman ***Iran

The Shotori mountain range is located along the northern terminus of the Nayband fault on the eastern and western domains of the Tabas and Lut blocks,*** range with NNW-SSE trending and approximately 120 km long includes a series of thrust faults approaching the right-lateral strike-slip Nayband *** the Shotori range has experienced various geological events since the Triassic,our investigations suggest that the basement of the Central Iranian subcontinent of the Shotori range contains the early Triassic deep sedimentary with normal faults which confirms Triassic tensional tectonic stress regime in the *** the middle Triassic,the mountain range has experienced thrust and strike-slip ***,in this study,we reconstruct the stress regimes for different geological periods using fault-slip *** inversion of faultslip data reveals drastic temporal changes in the maximum stress regime(σ1)over the Triassic,Jurassic,Cretaceous,Paleogene,Neogen,and *** reconstruction of the stress field based on the age and direction of fault movement reveals that the direction of the maximum horizontal stress axis(σ1)under a tensional stress regime was approximately N129°in the Early *** stress regime is the cause of thinning and subsidence of the Shotori sedimentary *** the middle Triassic,theσ1 direction was about N81°and the upper Triassic,theσ1 direction was almost N115°.The middle Triassic and upper Triassic stress states exhibited two distinct strike-slip and compressive stress *** stress regime led to the uplift of the Shotori sedimentary *** the Jurassic,the direction of the maximum horizontal stress axis(σ1)was~NW-SE under a compressive stress *** the Triassic,theσ1 direction was~*** stress regime led to the formation of the high topography of the Shotori Mountain *** the Late Cretaceous,the direction of the maximum horizontal stress axis(σ1)under the extensional stress

关键词： Paleostress Fault-slip data Geodynamics Shotori mountain range Tabas Central Iran

lassification and existence of positive entire k-convex radial solutions for generalized nonlinear k-Hessian system

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Applied Mathematics(A Journal of Chinese Universities) 2021年第4期36卷 564-582页

作者： ZHANG Li-hong YANG Ze-dong WANG Guo-tao mohammad M.rashidi School of Mathematics and Computer Science Shanxi Normal UniversityLinfen 041004China Shanghai Automotive Wind Tunnel Center Tongji UniversityShanghai 201804China

In this paper,we consider the following generalized nonlinear k-Hessian system G(S_(k)^(1/k)(λ(D^(2)z1)))S_(k)^(1/k)(λ(D^(2)z1))=φ(|x|,z1,z2),x∈R^(N),G(S_(k)^(1/k)(λ(D^(2)z2)))S_(k)^(1/k)(λ(D^(2)z2))=ψ(|x|,z1,z2),x∈R^(N),where G is a nonlinear operator and Sk(λ(D^(2)z))stands for the k-Hessian *** first are interested in the classification of positive entire k-convex radial solutions for the k-Hessian system ifφ(|x|,z1,z2)=b(|x|)φ(z1,z2)andψ(|x|,z1,z2)=h(|x|)ψ(z1).Moreover,with the help of the monotone iterative method,some new existence results on the positive entire k-convex radial solutions of the k-Hessian system with the special non-linearitiesψ,φare given,which improve and extend many previous works.

关键词： k-Hessian system entire blow-up classification of radial solutions monotone iterative method

Efficacy of combined albendazol and praziquntel and their loaded solid lipid nanoparticles components in chemoprophylaxis of experimental hydatidosis

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Asian Pacific Journal of Tropical Biomedicine 2017年第6期7卷 549-554页

作者： Ali Jelowdar Abdollah Rafiei mohammad Reza Abbaspour Iran rashidi Mahmood Rahdar Department of Parasitology School of MedicineAhvaz Jundishapur University of Medical Sciences Health Research Institute Infectious and Tropical Diseases Research CenterFaculty of MedicineAhvaz Jundishapur University of Medical Sciences Targeted Drug Delivery Research Center School of PharmacyMashhad University of Medical Sciences Department of Pathology School of MedicineAhvaz Jundishapur University of Medical Sciences

Objective:To evaluate the efficacy of combined ABZ and PZQ and their solid lipid nanoparticles in chemoprophylaxis of cystic echinococcosis(CE).Methods:ABZ and PZQ loaded solid lipid nanoparticles(SLNs) were prepared by high shear homogenization and microemulsion congealing techniques with some minor *** average size,polydispersity index(PDI),and particle size distribution were determined by scanning electron microscopy(SEM) and photon correlation *** females BALB/c were experimentally infected by protoscoleces(PSC) and randomly divided into four equal groups of 10 *** the end of the 3 months treatment period and 2 months rest,mice were sacrificed and the peritoneal cavity was opened for removal,counting,measuring,and histological analysis of hydatid ***:The results indicated that ABZ and PZQ chemoprophylaxis treatment reduced the wet weight and size of developed cysts 77.3% and 79%,*** corresponding result for the ABZ and PZQ loaded SLNs was 83% and 85%,***:This study for the first time demonstrated that ABZ and PZQ loaded SLNs is superior to free ABZ and PZQ for the chemoprophylaxis of CE in mice.

关键词： Echinococcosis Albendazole Praziquantel High pressure homogenization Solid lipid nanoparticles(SLNs)

Nanoporous carbons as promising novel methane adsorbents for natural gas technology

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Journal of Natural Gas Chemistry 2011年第6期20卷 664-668页

作者： Ali Morad rashidi Roghaye Lotfi Amideddin Nouralishahi mohammad Ali Khodagholi Masoud Zare Faeghe Eslamipour Nanotechnology Research Center Research Institute of Petroleum IndustryWest Blvd.Azadi Sport ComplexP.O.Box:14665-1998TehranIran

Nanoporous carbons were synthesized using furfuryl alcohol and sucrose as precursors and MCM-41 and mordenite as nanoporous *** produced nanoporous carbons were used as adsorbent for methane *** average pore diameter of the samples varied from 3.9 nm to 5.9 nm and the BET surface area varied from 320m2/g to 824m2/*** volumetric adsorption experiments revealed that MCM-41 and sucrose had better performance compared with mordenite and furfuryl alcohol,***,the effect of precursor to template ratio on the structure of nanoporous carbons and their adsorption capacities was *** nanoporous carbon produced from MCM-41 mesoporous molecular sieve partially filled by sucrose shows the best methane adsorption capacity among the tested samples.

关键词： nanoporous carbon MCM-41 adsorbed natural gas (ANG) methane adsorption