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Neotectonics of the Avaj region(NW Iran): left-lateral strike-slip and range-parallel reverse faults

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Journal of Mountain Science 2020年第4期17卷 838-850页

作者： reza ALIPOOR amir Hossein SADR Sahar GHAMARIAN Geology Department Faculty of Basic ScienceBu-Ali Sina UniversityHamedan 009881Iran

The aim of this study is the geomorphological analysis of neotectonic deformation in the Avaj region in the NW part of the Iranian Plateau. We use observations from detailed field surveys and the analysis of digital elevation model(DEM) and satellite images(Landsat-7 ETM+, 30-m resolution) to explore a new E-W trending strike-slip fault system in the study area. The major active faults of the Avaj region are the NW-SE trending Avaj and Hassanabad fault zones. The Avaj Fault is a SWdipping reverse fault with a transport toward NE and the Hassanabad Fault is a NE-dipping reverse fault that has moved Paleozoic rocks over Cenozoic sedimentary units. Moreover, there are some E-W trending left-lateral strike-slip faults which cut Late Quaternary deposits. The relationship between the NW-SE and E-W faults indicates that the slip at the termination of the NW-SE faults changes from reverse to left-lateral strike-slip faults. The activity of the left-lateral faults has formed a series of offsets and displacements in drainage paths. These left-lateral faults probably initiated in 5±2 Ma because of the convergence between the Central Iran and the South Caspian blocks.

关键词： Active tectonic Offset Earthquake Geomorphology Avaj Fault South Caspian

Prediction of Boundary Layer Transition Based on Modeling of Laminar Fluctuations Using RANS Approach

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Chinese Journal of Aeronautics 2009年第2期22卷 113-120页

作者： reza Taghavi Z. Mahmood Salary amir Kolaei Department of Mechanical Engineering Iran University of Science and Technology Tehran 16846 Iran

This article presents a linear eddy-viscosity turbulence model for predicting bypass and natural transition in boundary layers by using Reynolds-averaged Navier-Stokes (RANS) equations. The model includes three transport equations, separately, to compute laminar kinetic energy, turbulent kinetic energy, and dissipation rate in a flow field. It needs neither correlations of intermittency factors nor knowledge of the transition onset. Two transition tests are carried out: flat plate boundary layer under zero ...

关键词： boundary layer transition eddy-viscosity turbulence model laminar fluctuations

Normal edge-transitive Cayley graphs on non-abelian groups of order 4p,where p is a prime number

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Science China Mathematics 2013年第1期56卷 213-219页

作者： DARAFSHEH Mohammad reza ASSARI amir School of Mathematics Statistics and Computer ScienceCollege of ScienceUniversity of Tehran

We determine all connected normal edge-transitive Cayley graphs on non-abelian groups with order 4p,where p is a prime *** a consequence we prove if |G|=2δp,δ=0,1,2 and p prime,then Γ=Cay(G,S) is a connected normal 1/2 arc-transitive Cayley graph only if G=F4p,where S is an inverse closed generating subset of G which does not contain the identity element of G and F 4p is a group with presentation F4p = a,b|ap=b4=1,b-1ab=aλ,where λ2≡-1(mod p).

关键词：阿贝尔群边传递素数 Cayley图 mod 连接子集

Synthesis of new 4,6-diaryl-2-(arylthio)nicotinonitriles in Triton X-100 aqueous micellar media

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Chinese Chemical Letters 2015年第2期26卷 263-266页

作者： Mohammad reza Poor Heravi amir Soufi Department of Chemistry Payame Noor University

In this communication,we report four component condensations of acetophenone,arylaldehydes,arylthiol,and malononitrile in the presence of Triton X-100（5 mol%） aqueous *** reaction led to the formation of 4,6-diaryl-2-（arylthio）nicotinonitrile new derivatives in good *** FT-IR,^19F NMR,^1H NMR,^13C NMR spectra and elemental analysis confirm the structure of compounds.

关键词： Nicotinonitriles Triton X-100 Aqueous micellar media Non-ionic surfactant

Comparative and Competitive Adsorption of Cu（II） and Cd（II） Using Scoria： Equilibrium, Kinetic and Thermodynamic Studies

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Chemical Research in Chinese Universities 2017年第3期33卷 471-478页

作者： SEYFI Sara AZADMEHR amir reza MAGHSOUDI Abbas Department of Mining & Metallurgical Engineering Amirkabir University of Technology Tehran *** Iran

Heavy metals, such as Cu（Ⅱ） and Cd（Ⅱ） are among the hazardous pollutants that lead to severe ecological problems and have a toxic effect on living organisms. This study was carried out on adsorption of Cu（Ⅱ） and Cd（Ⅱ） from single-and multi-component aqueous solutions with Iranian scoria. Two- and three-parameter isotherm models, such as Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Khan and Toth have been studied for single and bi- nary adsorption of Cu（Ⅱ） and Cd（Ⅱ） onto scoria. The best result was attained from Langmuir model for Cu（Ⅱ） and Cd（Ⅱ） ions in single and binary solution. Therefore, homogenous adsorption is dominated, which was emphasized by three-parameter isotherm models. Based on the value of the free energy of adsorption for Cu（Ⅱ） and Cd（Ⅱ）, the inte-raction between these ions and scoria is a physical adsorption. In order to investigate competitive adsorption behavior, modified and extended Langmuir and Freundlich models have been studied, which indicated that adsorption of Cu（Ⅱ） and Cd（Ⅱ） on scoria has synergistic behavior. Extended Freundlich model and modified Langmuir model described Cu（Ⅱ） and Cd（Ⅱ） adsorption onto scoria, respectively.

关键词： Adsorption Individual isotherm Multi-component isotherm Kinetics Thermodynamic

DEVIATION OF THE ERROR ESTIMATION FOR VOLTERRA INTEGRO-DIFFERENTIAL EQUATIONS

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Acta Mathematica Scientia 2018年第4期38卷 1322-1344页

作者： Mohammad ZAREBNIA reza PARVAZ amir SABOOR BAGHERZADEH Department of Mathematics University of Mohaghegh Ardabili Department of Applied Mathematics Faculty of Mathematics Ferdowsi University of Mashhad

In this paper, we study an efficient asymptotically correction of a-posteriori er- ror estimator for the numerical approximation of Volterra integro-differential equations by piecewise polynomial collocation method. The deviation of the error for Volterra integro- differential equations by using the defect correction principle is defined. Also, it is shown that for m degree piecewise polynomial collocation method, our method provides O（hm＋l） as the order of the deviation of the error. The theoretical behavior is tested on examples and it is shown that the numerical results confirm the theoretical part.

关键词： Volterra integro-differential defect correction principle piecewise polynomial collocation finite difference error analysis

Usage of Iranian scoria for copper and cadmium removal from aqueous solutions

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Journal of Central South University 2015年第10期22卷 3760-3769页

作者： Sara Seyfi amir reza Azadmehr Mahdi Gharabaghi Abbas Maghsoudi Department of Mining & Metallurgical Engineering Amirkabir University of Technology School of Mining Engineering College of Engineering University of Tehran

The competitive removal of copper and cadmium from aqueous solutions using scoria has been investigated. Scoria was characterized by various methods, such as XRD, XRF, FT-IR and SEM. The results show that scoria sample contained augite, enstatite, diopside, and olivine. These minerals were separated from each other and each mineral was then subjected to the adsorption experiments. It was found that the main absorbent constituent in scoria was augite. Finally, statistical experimental method was used to optimization of adsorption conditions(Initial concentration of copper and cadmium ions, the amount of scoria and temperature) for removal of Cu(II) and Cd(II) ions from solution in optimum conditions. The optimum conditions are obtained as follows: concentrations of Cu(II) and Cd(II) of 400×10-6 and 554×10-6, respectively; amount of scoria of 7 g; temperature of 38 °C. Under these conditions Cu(II) and Cd(II) ions are absorbed onto the scoria more than 79% and 16%, respectively.

关键词：镉离子水溶液除铜 Cu(II) 应用伊朗顽火辉石吸附实验

Evaluating the safety and efficacy of mesenchymal stem cell-derived exosomes for treatment of refractory perianal fistula in IBD patients:clinical trial phaseⅠ

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Gastroenterology Report 2022年第1期10卷 585-593页

作者： Hojjatollah Nazari Foroogh Alborzi Asieh Heirani-Tabasi Alireza Hadizadeh reza Akbari Asbagh Behnam Behboudi Mohammad Sadegh Fazeli Mojgan Rahimi Mohammad reza Keramati amir Keshvari Alireza Kazemeini Masoud Soleimani Seyed Mohsen Ahmadi Tafti Department of Colorectal Surgery Colorectal Research CenterImam Khomeini Hospital ComplexTehran University of Medical SciencesTehranIran Department of Biomedical Engineering School of Biomedical EngineeringUniversity of Technology SydneySydneyNSWAustralia Department of Gastroenterology Division of GastroenterologyImam Khomeini HospitalSchool of MedicineTehran University of Medical SciencesTehranIran Department of Cardiovascular Surgery Research Center for Advanced Technologies in Cardiovascular MedicineCardiovascular Research InstituteTehran University of Medical SciencesTehranIran Division of Colorectal Surgery Department of SurgeryTehran University of Medical SciencesTehranIran Department of Cell Therapy and Hematology Faculty of Medical SciencesTarbiat Modares UniversityTehranIran Department of Tissue Engineering and Applied Cell Sciences School of Advanced Technologies in MedicineStudent Research CommitteeShahid Beheshti University of Medical SciencesTehranIran

Background:Exosome administration is a novel medical approach that promises excellent immunomodulatory properties without the conventional side effects of current antitumor necrosis factor drugs and *** study aimed to assess the safety and efficacy of usingmesenchymal stemcell(MSC)exosomes to treat refractory fistulas in patients with inflammatory bowel ***:MSCs were derived from the umbilical cords and their exosomes were *** patients with refractory perianal Crohn’s disease fistulas with amedian age of 35 years(range 31–47 years)were enrolled in the *** injections were administered in the operating roomto patients with refractory fistula(fistulas that are irresponsive to anti-tumor necrosis factor-αadministration within 6months).Sixmonths later,a physical examination,face-to-face interviews,andmagnetic resonance imaging were employed to evaluate the therapy responses of ***:The outcomes within 6 months after initiation of therapy showed that four patients had responded to *** patients who received exosome injections exhibited complete healing,while one reported no improvement and active discharge from the fistula *** addition,five patients(100%)reported neither systemic nor local adverse ***:Injection of exosomes extracted from MSCs demonstrates safety and a satisfactory therapeutic effect,as evidenced in this and other studies,and may play a significant role in the future treatment of gastrointestinal fistulas.

关键词： IBD exosome Crohn’s disease MSCs fistula

A hybrid LQR-PID control design for seismic control of buildings equipped with ATMD

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Frontiers of Structural and Civil Engineering 2018年第1期12卷 44-57页

作者： amir Hossein HEIDARI Sadegh ETEDALI Mohamad reza JAVAHERI-TAFTI Department of Civil Engineering Taft Branch Islamic Azad University Taft Iran Department of Civil Engineering Birjand University of Technology P.O. Box 97175-569 Birjand Iran

This paper presents an efficient hybrid control approach through combining the idea of proportional- integral-derivative （PID） controller and linear quadratic regulator （LQR） control algorithm. The proposed LQR-PID controller, while having the advantage of the classical PID controller, is easy to implement in seismic-excited structures. Using an optimization procedure based on a cuckoo search （CS） algorithm, the LQR-PID controller is designed for a seismic- excited structure equipped with an active tuned mass damper （ATMD）. Considering four earthquakes, the performance of the proposed LQR-PID controller is evaluated. Then, the results are compared with those given by a LQR controller. The simulation results indicate that the LQR-PID performs better than the LQR controller in reduction of seismic responses of the structure in the terms of displacement and acceleration of stories of the structure.

关键词： eismic control tuned mass dampers cuckoo search PID controller LQR controller