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Open Journal of Geology 2017年第11期7卷 1670-1689页

作者： Mohsen javan Khosh Kholgh Morteza Razmara mohammad Ali Arian Department of Geology Faculty of Science North Tehran Branch Islamic Azad University Tehran Iran Department of Geology Ferdowsi University of Mashhad Mashhad Iran

The granitoids-diroretic complex and associated volcanic suits of Malek Siah Kuh (eastern Iran) were examined by RS, XRD, XRF, AAS and ICP-MS methods. The Multispectral data were used for differentiating of lithological units, main alterations, structural trends, and hydrothermally altered minerals. Based on the results of remote sensing, field studies and petrographic data, the complex classified into three main groups: 1) mafic unit (gabbro-basalt), 2) intermediate rocks (diorite-andesite suite) and 3) felsic unit (granitoide rocks). The complex is characterized by high Al2O3 and Sr contents as well as high Sr/Y and La/Yb ratios, while low in Y and Yb contents. The geochemical characteristics of these rocks indicate that they are similar to adakite like rocks. The complex is high calc-alkaline to shoshonitic nature. The results indicated derivation from similar silicate melt source followed by differentiation and assimilation of crustal rocks. Based on set of petrological and geochemical relations, 3 distinct stages of mineralization process can be recognized. 1) It is differentiation during magma evolution as well as metal enrichment and subsolidus leaching by hot fluids. 2) It occurred by ascending of the gas-rich magma and release of S and As. 3) It was accompanied by hydrothermal activities leading to the generation of sulfidation and associated polymetallic (Cu, Au, Fe) mineralization.

关键词： Malek Siah Kuh Igneous Complex Differentiation Assimilation

Effect of BCD Plasma on a Bacteria Cell Membrane

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Plasma Science and Technology 2013年第7期15卷 685-689页

作者： Nasrin NAVABSAFA Hamid GHOMI Maryam nikkhah Soheila MOHADES Hossein DABIRI Saeed GHASEMI Laser and Plasma Research Institute Shahid Beheshti UniversityEvin*** Tehran Iran Department of Nanobiotechnology Faculty of Biological Science Trbiat Modares UniversityTehran Iran Department of Medical Microbiology Faculty of Medicine Shahid Beheshti University of Medical Science*** Tehran Iran

Cell membrane rupture is considered to be one of the probable mechanisms for bacterial inactivation using barrier corona discharge （BCD） plasma. In this paper, the effect of the BCD plasma on the Escherichia coli （E. coli） bacteria cell wall was investigated through two analytical methods; Adenosine-5-triphosphate （ATP） assay and Atomic Force Microscopy （AFM）. The ATP assay results indicate an increase in the ATP content of samples which were exposed to the BCD plasma. This implies the bacteria cell rupture. Moreover, AFM images confirm a serious damage of the bacteria cell wall under the influence of the bactericidal agents of the plasma.

关键词： AFM ATP assay barrier corona discharge E. coli

Life Cycle Assessment modeling of milk production in Iran

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Information Processing in Agriculture 2015年第2期2卷 101-108页

作者： Hamzeh Soltanali Bagher Emadi Abbas Rohani Mehdi Khojastehpour Amin nikkhah Department of Biosystems Engineering Ferdowsi University of MashhadAzadi SquareMashhadIran Young Researchers and Elite Club Rasht BranchIslamic Azad UniversityRashtIran

Livestock units are known as one of the most influential sectors in the environment ***,the aim of this study was to investigate the environmental impacts of milk production in Guilan province of Iran through Life Cycle Assessment(LCA)*** primary data were collected from 45 units of milk production through a field survey with the help of a structured *** reliability was assessed using Cronbach’s alpha coefficient and was estimated an acceptable value of *** consumption of resources and emissions were allocated to a functional unit(FU)of one ton of *** of emissions in five impact categories of global warming,acidification,eutrophication,photochemical oxidation and depletion of resources were *** results showed that the characterization index for these impact categories were 1831 kg CO2 eq,7.97 kg SO2 eq,3.42 kg PO4^-3 eq,0.21 kg C2H4 eq and 838.39 MJ,*** indices for these impact categories were calculated as 0.24,0.28,0.076,0.017 and 0.046,*** index(EcoX)and resources depletion index(RDI)were obtained 0.61 and 0.04,*** this study,the highest potential for environmental impacts of production revealed for acidification and followed by global warming impact category.

关键词： Acidification Dairy farm Environmental impact Global warming

Resilience-oriented intentional islanding of reconfigurable distribution power systems

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Journal of Modern Power Systems and Clean Energy 2019年第4期7卷 741-752页

作者： mohammad Hossein OBOUDI mohammad mohammadI mohammad RASTEGAR Department of Power and Control Engineering School of Electrical and Computer EngineeringShiraz UniversityShirazIran

The participation of distributed energy resources in the load restoration procedure,known as intentional islanding,can significantly improve the distribution system *** system reconfiguration can effectively alter islanding procedure and thus provide an opportunity to supply more demanded energy and reduce distribution system *** addition,high-impact events such as hurricanes and earthquakes may complicate the procedure of load restoration,due to the disconnection of the distribution system from the upstream grid or concurrent component *** paper presents a two-level method for intentional islanding of a reconfigurable distribution system,considering high-impact *** thefirst level,optimal islands are selected according to the graph model of the distribution *** the second level,an optimal power flow(OPF)problem is solved to meet the operation constraints of the islands by reactive power control and demand side *** proposed problem in the first level is solved by a combination of depth first search and particle swarm optimization *** OPF problem in the second level is solved in DIgSILENT *** proposed method is implemented in the IEEE 69-bus test system,and the results show the validity and effectiveness of the proposed algorithm.

关键词： Intentional islanding Active distribution system Distributed energy resource Distribution system reconfiguration Distribution system resilience

Global Practical Stabilization of Discrete-Time Switched Affine Systems via a General Quadratic Lyapunov Function and a Decentralized Ellipsoid

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IEEE/CAA Journal of Automatica Sinica 2021年第11期8卷 1837-1851页

作者： mohammad Hejri Department of Electrical Engineering Sahand University of TechnologySahand New TownTabriz 51335-1996Iran

This paper addresses the problem of global practical stabilization of discrete-time switched affine systems via statedependent switching *** attempts have been made to solve this problem via different types of a common quadratic Lyapunov function and an *** classical results require either the quadratic Lyapunov function or the employed ellipsoid to be of the centralized *** some cases,the ellipsoids are defined dependently as the level sets of a decentralized Lyapunov *** this paper,we extend the existing results by the simultaneous use of a general decentralized Lyapunov function and a decentralized ellipsoid parameterized *** proposed conditions provide less conservative results than existing works in the sense of the ultimate invariant set of attraction *** different approaches are proposed to extract the ultimate invariant set of attraction with a minimum size,i.e.,a purely numerical method and a numerical-analytical *** the former,both invariant and attractiveness conditions are imposed to extract the final set of matrix *** latter is established on a principle that the attractiveness of a set implies its ***,the stability conditions are derived based on only the attractiveness property as a set of matrix inequalities with a smaller *** examples are presented to prove the satisfactory operation of the proposed stabilization methods.

关键词： Decentralized quadratic Lyapunov function decentralized ellipsoid discrete-time switched affine systems practical stabilization switching power converters

Workhorse flaps for thumb reconstruction

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Plastic and Aesthetic Research 2022年第1期9卷 48-64页

作者： Ahmed M.Yassin Suvashis Dash Dariush nikkhah Plastic Surgery Department Faculty of MedicineMansoura UniversityMansoura 35511Egypt Department of Plastic and Reconstructive Surgery All India Institute of Medical SciencesNew Delhi 110029India Division of Surgery&Interventional Science University College London UCLLondon NW32PFUK Department of Plastic Surgery Royal Free Hospital NHS Foundation TrustHampsteadLondon NW32QGUK

Posttraumatic thumb defects result in significant functional *** reconstructive procedures have been described for the management and improvement of *** with no treatment,all reconstructive methods are *** of the available procedures may be more applicable under certain conditions,can offer great benefits,and have its own downsides as *** a thorough assessment and meticulous technique,the results of thumb reconstruction can be *** present a review of the current reconstructive procedures for traumatic thumb amputation.

关键词： Thumb reconstruction soft tissue reconstruction of thumb thumb injury hand flaps

Nonlinear analysis of cable structures using the dynamic relaxation method

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Frontiers of Structural and Civil Engineering 2021年第1期15卷 253-274页

作者： mohammad REZAIEE-PAJAND mohammad mohammadI-KHATAMI Department of Civil Engineering Ferdowsi University of MashhadMashhad ***Iran

The analysis of cable structures is one of the most challenging problems for civil and mechanical *** they have highly nonlinear behavior,it is difficult to find solutions to these *** far,different assumptions and methods have been proposed to solve such *** dynamic relaxation method(DRM)is an explicit procedure for analyzing these types of *** utilize this scheme,investigators have suggested various stiffness matrices for a cable *** this study,the efficiency and suitability of six well-known proposed matrices are assessed using the *** achieve this goal,16 numerical examples and two criteria,namely,the number of iterations and the analysis time,are *** on a comprehensive comparison,the methods are ranked according to the two *** numerical findings clearly reveal the best ***,a variety of benchmark problems are suggested by the authors for future studies of cable structures.

关键词： nonlinear analysis cable structure stiffness matrix dynamic relaxation method

Stabilizing silica nanoparticles in high saline water by using polyvinylpyrrolidone for reduction of asphaltene precipitation damage under dynamic condition

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Chinese Journal of Chemical Engineering 2019年第5期27卷 1021-1029页

作者： mohammad Reza Aghajanzadeh mohammad Sharifi Department of Petroleum Engineering Amirkabir University of Technology

In this study, the performance of stable nanofluid containing SiO2 nanoparticles dispersed and stabilized in high salinity brine for asphaltene inhibition in dynamic condition is evaluated. In the first stage of this work, the stability of silica nanoparticles in different range of water salinity(0–100000 mg·L-1) is investigated. Next, stable nanofluid containing highest salinity is selected as asphaltene inhibitor agent to inject into the damaged core sample. The estimated values of oil recovery for base case, after damage process and after inhibition of asphaltene precipitation using nanofluid are 51.6%, 36.1% and 46.7%, respectively. The results showed the reduction in core damage after using nanofluid. In addition, the relative permeability curves are plotted for the base case, after damage process and also after inhibition of asphaltene precipitation using nanofluid. Comparison of relative permeability curves shows, relative permeability of oil phase decreased after damage process as compared with the base case. But after using nanofluid the oil relative permeability curve has shifted to the right and effective permeability of oil phase has been improved.

关键词： Formation damage Enhanced oil recovery Salinity Asphaltene Core flooding Nano particles

DEM Numerical Simulation of Abrasive Wear Characteristics of a Bioinspired Ridged Surface

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Journal of Bionic Engineering 2010年第2期7卷 175-181页

作者： mohammad Almagzoub mohammad Carlo Menon Key Laboratory of Bionic Engineering Jilin University College of Biological and Agricultural Engineering Jilin University MENRVA Group Simon Fraser University

This paper presents numerical investigations into a ridged surface whose design is inspired by the geometry of a Farrer’*** objective of the performed research is to assess if the proposed Bioinspired Ridged Surface (BRS) can potentiallyimprove wear resistance of soil-engaging components used in agricultural machinery and to validate numerical simulationsperformed using software based on the Discrete Element Method (DEM).The wear performance of the BRS is experimentallydetermined and also compared with a conventional flat *** size of soil particles and relative velocities between theabrasive sand and the testing surfaces are *** results show that the numerical simulations are in agreement withthe experimental results and support the hypothesis that abrasive wear is greatly reduced by substituting a conventional flatsurface with the BRS.

关键词： bioinspired ridged surface abrasive wear numerical simulation Discrete Element Method (DEM)

A Unified Optimization-Based Framework to Adjust Consensus Convergence Rate and Optimize the Network Topology in Uncertain Multi-Agent Systems

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IEEE/CAA Journal of Automatica Sinica 2021年第9期8卷 1539-1548页

作者： mohammad Saeed Sarafraz mohammad Saleh Tavazoei Department of Electrical Engineering Sharif University of TechnologyTehran 11365-9363Iran

This paper deals with the consensus problem in an uncertain multi-agent system whose agents communicate with each other through a weighted undirected(primary)*** considered multi-agent system is described by an uncertain state-space model in which the involved matrices belong to some matrix *** the main contribution of the paper,a unified optimization-based framework is proposed for simultaneously reducing the weights of the edges of the primary communication graph(optimizing the network topology)and synthesizing a controller such that the consensus in the considered uncertain multi-agent system is ensured with an adjustable convergence *** the NP-hardness nature of the optimization problem related to the aforementioned framework,this problem is relaxed such that it can be solved by regular LMI ***/practical-based examples are presented to verify the usefulness of the obtained results.

关键词： Convergence-rate element-wise uncertainty robust controller topology design