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Regenerating historical districts through tactical urbanism:A case study of Sarpol neighborhood in Isfahan Province,Iran

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Frontiers of Architectural Research 2023年第6期12卷 1234-1245页

作者： Mohammad Salehi Shima Taheri amirhosein shabani Department of Urban Planning Najafabad BranchIslamic Azad UniversityNajafabadIran Department of Architecture Isfahan(Khorasgan)BranchIslamic Azad UniversityIsfahanIran Department of Architecture Faculty of EngineeringShahid Ashrafi Esfahani UniversityIsfahanIran Advancement in Architecture and Urban Planning Research Center Najafabad BranchIslamic Azad UniversityNajafabadIran

This paper examines historical urban fabrics’challenges regarding quality of life and visual disturbances despite their cultural and identity *** and socialoriented approaches considering social,economic,and cultural dimensions preserve and enhance these valuable *** urbanism,with its people-oriented approach,can address these *** study focused on Sarpol in Khomeinishahr County,Isfahan Province of *** city’s urban structure divides into two parts:despite its active social structure and valuable spaces,Sarpol is a historic neighborhood with significant *** followed Corbin and Strauss’s version of Grounded Theory in the qualitative research *** and snowball sampling methods were employed to select 21 participants from the Sarpol neighborhood for semi-structured *** analysis involved three stages of coding:open,axial,and *** themes included religious participation,identity,sustainable social bonds,indigenous dependence,and low environmental *** central issue identified was the crucial role of religious and cultural values as a driving force for tactical urbanism,which emerged as the most critical semantic domain related to the research problem.

关键词： Tactical urbanism Urban regeneration Historical fabrics Neighborhood Grounded theory Social-oriented approaches

Assessment of groundwater potential using multi-criteria decision analysis and geoelectrical surveying

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Geo-Spatial Information Science 2022年第4期25卷 600-618页

作者： Marzieh shabani Zohreh Masoumi Abolfazl Rezaei Department of Earth Sciences Institute for Advanced Studies in Basic Sciences(IASBS)ZanjanIran Center for Research in Climate Change and Global Warming(CRCC) Institute for Advanced Studies in Basic Sciences(IASBS)ZanjanIran

A precise map of the dispersion of the groundwater potential across each watershed can help decision-makers to exert optimal water management in each *** this research,the potential of groundwater resources in both the Zanjanrood Catchment and the Tarom Region,located in the northwest of Iran,has been *** effective criteria including slope,land-use,drainage density,spring density,lithology,lineament density,and rainfall are *** were first weighted using the Analytical Hierarchical Process(AHP)method and then overlaid by the Technique for Order Preferences by Similarity to Ideal(TOPSIS)***,the spatial zoning map of groundwater potential was obtained in four categories.A sensitivity analysis was performed to determine the influence of each criterion on the obtained *** model was verified using both the spatial distribution of the high-discharged production wells and the geophysical-based geoelectric field *** results indicate that the high-discharged wells(>40 l/s)in both regions are dispersed predominantly in the very good zone and,in several cases,in the good ***,the results from the two-dimensional models of resistivity and induced polarization of geoelectrical field survey are inappropriate agreement with those from the TOPSIS ***,there is no suitable potential zone of groundwater in the surrounding highlands to be used in the future for drinking purposes since the highlands water supply is a strategic supply for *** strategies employed in this study,the results of GIS modeling,and the geoelectrical analysis can be considered for sustainable development of similar arid and semi-arid areas since groundwater is considered as the main supplier of water in such regions.

关键词： Spatial Information System(GIS) Remote Sensing(RS) groundwater potential TOPSIS geoelectrical field survey sustainable development

Application of the Extrusion to Increase the Binding between the Ceramic Particles and the Metal Matrix:Enhancement of Mechanical and Tribological Properties

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Journal of Materials Science & Technology 2013年第5期29卷 423-428页

作者： Ali Mazahery Mohsen Ostad shabani Department of Materials Science Lenjan BranchIslamic Azad UniversityIsfahanIran

Aluminum alloyed with magnesium and silicon has been used as the matrix material owing to its excellent mechanical properties coupled with good formability and its wide applications in industrial sector. An extrusion process was developed to consolidate AI 6061-SiCp composites from mixed powders. The results show that the composites were fully densified, with no sign of pores or oxide layers observable in the optical microscope. The SiC particles were distributed uniformly in the matrix. As compared with 6061 alloys, the composites demonstrated a smaller elongation, but exhibited a higher Young＇s modulus and a larger work hardening capacity. These composites possessed much higher elongation at the same strength level. The present study also addressed the dry wear behavior of the composites at different sliding speeds and applied loads. Values of the friction coefficient of the matrix alloy and composite materials were in expected range for light metals in dry sliding conditions. All of these improvements were attributed to the merits, including full densification of the bulk, uniform dispersion of the SiC particles in the matrix, and strong binding between the SiC particles and the matrix resulting from the extrusion.

关键词： Aluminum Strength Wear Extrusion Metal matrix composites

Semicomplete Finite p-Groups of Class 2

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Algebra Colloquium 2016年第4期23卷 651-656页

作者： M. shabani Attar Department of Mathematics Payame Noor University P.O. Box 19395-4697 Tehran Iran

Let G be a group and G＇ be its commutator subgroup. An automorphism α of a group G is called an IA-automorphism if x^-1α（x） ∈G＇ for each x∈G. The set of all IA-automorphisms of G is denoted by IA（G）. A group G is called semicomplete if and only if IA（G） = Inn（G）, where Inn（G） is the inner automorphism group of G. In this paper we completely characterize semicomplete finite p-groups of class 2; we also classify all semicomplete finite p-groups of order p^n （n≤5）, where p is an odd prime. This completes our work in 2011.

关键词： semicomplete groups IA-automorphisms finite p-groups

STABILITY ANALYSIS OF A CAPACITIVE FGM MICRO-BEAM USING MODIFIED COUPLE STRESS THEORY

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Acta Mechanica Solida Sinica 2013年第4期26卷 427-440页

作者： Behrokh Abbasnejad Ghader Rezazadeh Rasool shabani Mechanical Engineering Department Urmia University

Based on the Modified Couple Stress Theory,a functionally graded micro-beam under electrostatic forces is *** FGM micro-beam is made of two materials and material properties vary continuously along the beam thickness according to a *** and static pull-in voltages are obtained and it is shown that the static and dynamic pull-in voltages for some materials cannot be obtained using classic theories and components of couple stress must be taken into *** addition,it is shown that the values of pull-in voltages depend on the variation through the thickness of the volume fractions of the two constituents.

关键词： MEMS FGM micro-beam stability pull-in voltage electrostatic pressure modified couple stress theory

Active Control of A Piston-Type Absorbing Wavemaker with Fully Reflective Structure

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China Ocean Engineering 2020年第5期34卷 730-737页

作者： Saeed MAHJOURI Rasoul shabani Ghader REZAZADEH Peyman BADIEI Department of Mechanical Engineering Faculty of EngineeringUrmia UniversityUrmiaIran South Ural state University ChelyabinskRussian Federation cDepartment of Civil Engineering Tehran UniversityTehranIran

Multiple reflections of the waves between structure and wavemaker in hydraulic flumes could change the frequency content of the desired incident wave or result in resonance. A prominent approach to avoid multiple reflections is active control of the wavemaker. This paper proposes a simple and practical active control algorithm for piston-type wavemaker. The block diagram of the control system is presented in real time domain. It is shown that there is no need to use any transfer function or filter in the feedback and feed forward loops and the use of constant gains can yield acceptable results. In the operating frequency range(0.25-2 Hz), it is revealed that the proposed system is very effective at suppressing the excitation of resonant sloshing for regular wave. In the case of irregular waves, it is depicted that the experimental waves agree quite well with the desired wave elevation in frequency domain. In addition, comparison of the results obtained both with and without absorption discloses the good characteristics in time domain.

关键词： wave flume piston-type wavemaker active absorption mathematical modeling reflective waves

Effects of intermediate Ni layer on mechanical properties of Al–Cu layered composites fabricated through cold roll bonding

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International Journal of Minerals,Metallurgy and Materials 2018年第5期25卷 573-583页

作者： Ali shabani Mohammad Reza Toroghinejad Alireza Bagheri Department of Materials Engineering Isfahan University of Technology

Layered composites have attracted considerable interest in the recent literature on metal composites. Their mechanical properties depend on the quality of the bonding provided by the intermediate layers. In this study, we analyzed the mechanical properties and bond strengths provided by the nickel layer with respect to its thickness and nature(either powder or coating). The results suggest that bond strength decreases with an increase in the content of nickel powder. At 0.3 vol% of nickel coating, we found the nature of nickel to be less efficient in terms of bond strength. A different picture arose when the content of nickel was increased and the bond strength increased in nickel coated samples. In addition, the results demonstrate that mechanical properties such as bend strength are strongly dependent on bond strength.

关键词： cold roll bonding Al/Ni/Cu composite mechanical testing metallography

Synthesis of 2,3-dihydroquinazolin-4(1H)-ones catalyzed by zirconium(Ⅳ) chloride as a mild and efficient catalyst

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Chinese Chemical Letters 2011年第10期22卷 1163-1166页

作者： Mohammad Abdollahi-Alibeik Elahe shabani Department of Chemistry Yazd UniversityYazd 89195-741Iran

2,3-Dihydroquinazolin-4（1H）-ones have been synthesized in the high to excellent yields via condensation of 2-aminobenzamide with aldehydes and ketones in the presence of catalytic amount of ZrCl_4 in EtOH at room **... 详细信息

关键词： 2 3-Dihydroquinazolin-4(1H)-one ZrCl_4 Catalysis 2-Aminobenzamide

Thermodynamic Analysis of Liquefied Natural Gas(LNG)Production Cycle in APCI Process

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Journal of Thermal Science 2012年第6期21卷 564-571页

作者： Shahrooz Abbasi Nezhad Bezhan shabani Majid Soleimani Department of Mechanical Engineering Langroud BranchIslamic Azad UniversityLangroudIran

The appropriate production of liquefied natural gas(LNG)with least consuming energy and maximum efficiency is quite *** this paper,LNG production cycle by means of APCI Process has been *** equilibrium equations and exergy equilibrium equations of each equipment in the APCI cycle were *** equipments are described using rigorous thermodynamics and no significant simplification is *** some operating parameters as key parameters,influences of these parameters on coefficient of performance(COP)and exergy efficiency of the cascading cycle were *** results indicate that COP and exergy efficiency will be improved with the increasing of the inlet pressure of MR(mixed refrigerant)compressors,the decreasing of the NG and MR after precooling process,outlet pressure of turbine,inlet temperature of MR compressor and NG temperature after cooling in main cryogenic heat exchanger(MCHE).The COP and exergy efficiency of the APCI cycle will be above 2% and 40%,respectively,after optimizing the key parameters.

关键词： LNG APCI process Coefficient of performance Exergy efficiency