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    Synthesis of dithiocarbamates by Markovnikov addition reaction in PEG and their application in amidoalkylation of naphthols and indoles

    , Article Journal of the Brazilian Chemical Society ; Volume 26, Issue 7 , 2015 , Pages 1500-1508 ; 01035053 (ISSN) Halimehjani, A. Z ; Dadras, A ; Ramezani, M ; Shamiri, E. V ; Hooshmand, S. E ; Hashemi, M. M ; Sharif University of Technology
    Sociedade Brasileira de Quimica  2015
    Synthesis of dithiocarbamates by the one-pot three-component Markovnikov addition reaction of an amine, carbon disulfide and an alkyl vinyl ether or N-vinylpyrrolidone is reported in polyethylene glycol (PEG) under a mild and green procedure with high yields and completely regiospecific. Also, the products were used as efficient starting materials for amidoalkylation of electron-rich arenes such as naphthols and indoles  

    An efficient simulated annealing approach to the traveling tournament problem [electronic resource]

    , Article American Journal of Operations Research ; Vol.2 No.3, September 2012, 391-398 Nourollahi, S (Sevnaz) ; Eshghi, Kourosh ; Shokri Razaghi, Hooshmand ; Sharif University of Technology
    Scheduling sports leagues has drawn significant attention to itself in recent years, as it involves considerable revenue as well as challenging combinatorial optimization problems. A particular class of these problems is the Traveling Tournament Problem (TTP) which focuses on minimizing the total traveling distance for teams. In this paper, an efficient simulated annealing approach is presented for TTP which applies two simultaneous and disparate models for the problem in order to search the solutions space more effectively. Also, a computationally efficient modified greedy scheme is proposed for constructing a favorable initial solution for the simulated annealing algorithm. Our... 

    Analysis of partial discharge by eavelet-hilbert transform

    , Article European Transactions on Electrical Power ; Volume 19, Issue 8 , 2009 , Pages 1140-1152 ; 1430144X (ISSN) Sarikhani, A ; Reihani, E ; Nabizadeh, N ; Hooshmand, A ; Davodi, M ; Sharif University of Technology
    Time-frequency and time-scale transforms are one of the powerful mathematical methods for feature extraction of non-stationary signals such as partial discharge (PD) signals. Modified Fourier-based transforms and Wavelet transforms are well known among them. PD signals can be analyzed by these influential methods but normally with some serious limitations and inadequacies. This paper proposes a new approach based on Wavelet-Hilbert transform for the analysis of electrical PD signals. The mathematical model of a Wavelet-Hilbert transform is described. Contemplating of natural behavior of PD, that is, stochastic and non-stationary an artificial multi-source of PD is simulated in a Detail model... 

    Deep eutectic solvents: Cutting-edge applications in cross-coupling reactions

    , Article Green Chemistry ; Volume 22, Issue 12 , 2020 , Pages 3668-3692 Hooshmand, S. E ; Afshari, R ; Ramón, D. J ; Varma, R. S ; Sharif University of Technology
    Royal Society of Chemistry  2020
    Deep eutectic solvents (DESs), surmised as "the organic reaction medium of the century", have reverberated a new symphony throughout the present green millennium. A brief historical account of the DES systems and their physicochemical properties as task-specific and designer solvents for cross-coupling reactions are appraised including the hole theory that explains the underlying mechanistic pathway for this emerging neoteric medium. The insights into cross-coupling reactions and their applications are included, highlighting the significant achievements pertaining to the dual role of DESs as a solvent and catalyst. In addition, popular "name-reactions"for the carbon-carbon and... 

    Histidine-enhanced gene delivery systems: The state of the art

    , Article Journal of Gene Medicine ; Volume 24, Issue 5 , 2022 ; 1099498X (ISSN) Hooshmand, S. E ; Jahanpeimay Sabet, M ; Hasanzadeh, A ; Kamrani Mousavi, S. M ; Haeri Moghaddam, N ; Hooshmand, S. A ; Rabiee, N ; Liu, Y ; Hamblin, M. R ; Karimi, M ; Sharif University of Technology
    John Wiley and Sons Inc  2022
    Gene therapy has emerged as a promising tool for treating different intractable diseases, particularly cancer or even viral diseases such as COVID-19 (coronavirus disease 2019). In this context, various non-viral gene carriers are being explored to transfer DNA or RNA sequences into target cells. Here, we review the applications of the naturally occurring amino acid histidine in the delivery of nucleic acids into cells. The biocompatibility of histidine-enhanced gene delivery systems has encouraged their wider use in gene therapy. Histidine-based gene carriers can involve the modification of peptides, dendrimers, lipids or nanocomposites. Several linear polymers, such as polyethylenimine,... 

    Free convection analysis in a Γ-shaped heat exchanger using lattice Boltzmann method employing second law analysis and heatline visualization

    , Article International Journal of Numerical Methods for Heat and Fluid Flow ; Volume 29, Issue 9 , 2019 , Pages 3056-3074 ; 09615539 (ISSN) KhakRah, H ; Mohammaei, M ; Hooshmand, P ; Bagheri, N ; Hasani Malekshah, E ; Sharif University of Technology
    Emerald Group Publishing Ltd  2019
    Purpose: The nanofluid flow and heat transfer within a heat exchanger, with different thermal arrangements of internal active bodies, are investigated. Design/methodology/approach: For the numerical simulations, the lattice Boltzmann method is utilized. The KKL model is used to predict the dynamic viscosity of CuO-water nanofluid. Furthermore, the Brownian method is taken account using this model. The influence of shapes of nanoparticles on the heat transfer performance is considered. Findings: The results show that the platelet nanoparticles render higher average Nusselt number showing better heat transfer performance. In order to perform comprehensive analysis, the heatline visualization,... 

    The Feasibility Study of Micronized Powder Plant for Exporting (UNIDO METOD)

    , M.Sc. Thesis Sharif University of Technology (Author) ; Hooshmand, Mahmoud (Supervisor)
    This thesis deals with the development of a hypothetical micronized powder factory and trying to test and engage in this hypothetical development of the following plant, it considers following factors:
    1-Domestic & International market
    2-Plant location
    3-Plant design & development
    b.technology & equipment
    c.human resource
    4-raw material
    5-shipping & transport
    To evaluate above factors the UNIDO methodology is used in this research work. The UNIDO methods are using a process by which feasibility studies of production facilities or plant are base on. After reviewing a variety of factors, ranging from financial... 

    Numerical modeling of nanofluid flow and heat transfer in a quartered gearwheel-shaped heat exchanger using FVM

    , Article Chinese Journal of Physics ; Volume 59 , 2019 , Pages 591-605 ; 05779073 (ISSN) Hooshmand, P ; Kavoosi Balootaki, H ; Mohammaei, M ; Bagheri, N ; Hasani Malekshah, E ; Sharif University of Technology
    Physical Society of the Republic of China  2019
    The numerical modeling of natural convection fluid flow and heat transfer in a quarter of gearwheel-shaped heat exchanger is carried out. The heat exchanger is included with internal active square bodies. These bodies have hot and cold temperatures with different thermal arrangements. Three different thermal arrangements are considered and showed with Case A, Case B and Case C. The CuO-water nanofluid is selected as operating fluid. The Koo-Kleinstreuer-Li (KKL) correlation is utilized to estimate the dynamic viscosity and thermal conductivity. In addition, the shapes of nanoparticles are taken account in the analysis. The Rayleigh number, nanoparticle concentration and thermal arrangements... 

    Feasibility Study Of A Gas To Liquid Plant

    , M.Sc. Thesis Sharif University of Technology Vahidian, Somayeh (Author) ; Hooshmand, Mahmoud (Supervisor)
    The methodology proposed by UNIDO , to investigate feasibility study of industrial project, is a useful tool in pre-investment decision making. In this work feasibility of investing on "Gas To Liquid" GTL Plant of Asalouye is investigated. Having gathered required information, including gas field potential, required technology and machineries, cost of investments , required manpower to run the UNIDO methodology is used to investigate the investment, the result of the work shows that the project is feasible and it would have internal rate of return of 24% ( by sale cost= 81 $ per barrel of GTL product)  

    Integration of Design and Manufacturing Systems Using Neutral Data Structure

    , Ph.D. Dissertation Sharif University of Technology Mokhtar, Alireza (Author) ; Hooshmand, Mahmoud (Supervisor)
    In competitive environment of quick market changes, developing an interoperable manufacturing system is a necessity. Process planning as a connection link between design and manufacturing, has never been able to integrate these up/down stream activities and in spite of employing computer systems, CAPP’s information has been managed in an isolated manner. To realize interoperability, the exchange of part and product data must be independent of their platforms. There are two basic approaches for this purpose: i) Utilizing interface and ii) Utilizing neutral formats. STEP (Standard for the Exchange of Product data) plays a significant role as a neutral data model to integrate design,... 

    Using Data Mining in Production Information Systems

    , M.Sc. Thesis Sharif University of Technology Alishahi, Mohammad (Author) ; Hooshmand, Mahmoud (Supervisor)
    Nowadays, because of high volume and growth of data in industrial organizations and productive factories, registration and storing of data have forgotten manual and tradition styles for which using automation and mechanized machinery and systems has been a necessary task. In order to reach to this revolution, need to some tools, facilities and methods which can fulfill this requirement is felt strongly. Therefore, high volume of data is considered as an advantage because based on precise analysis it is possible to make logical management decisions with less risk. During last years, statistical and numerical methods and simulation were used to discover knowledge and information when one of... 

    Implementing a Lean Management System in a Maufacturing Company Focusing on Lean Production Process

    , M.Sc. Thesis Sharif University of Technology Katiraei, Kamiar (Author) ; Hooshmand, Mahmoud (Supervisor)
    Lean Management is a set of procedures and processes that ensures firms’ survival in today’s world. Due to the global spread of lean management principles and rapid change of customer requirement in today’s markets, familiarity with these principles and deploying them seems crucial for firms that want to survive. In this research, Lean Management is implemented in a manufacturing company of heating and cooling devices. This process consists of two main processes. In the Business Renewal Process, the firm envisions its future and evaluates itself in nine keys of development based on lean principles. Diagnosis results indicates firm’s relative superiority in Customer Focus and Lean... 

    Service Platform Design in Tourism Field by Service Composition Approach

    , M.Sc. Thesis Sharif University of Technology Bakhtiari, Sahar (Author) ; Hooshmand, Mahmoud (Supervisor)
    The tourism industry, as the world's largest industry, plays a significant role in the economic status of developing and developed countries, and has been among the fastest growing sectors in other industries in recent decades.The important role of the tourism industry in economic development has begun since the 19th century, but it has quickly traveled its course as a global industrial one.This rapid growth will enable us to exploit the potential of this industry with the growth of technology and knowledge.Designing a platform with the ability to link up the supply and demand among existing individuals as potential sources of resources to reduce the cost and facilitate tourism with a cheap... 

    Combination Services in A Cloud Manufacturing System With Regard to Quality as A Fuzzy Criteria

    , M.Sc. Thesis Sharif University of Technology Nateghi, Mohammad (Author) ; Hooshmand, Mahmoud (Supervisor)
    Today, due to the development of information technology and fierce competition among manufacturers, the need to reduce the production costs and increase the variety are strongly felt. Each process in the cloud manufacturing is first considered as a service product development, and then, specializing each of these services, provides us a lower cost, along with a higher accuracy, and quality.The modern world is the world full of uncertainty. The uncertainty, which causes the manufacturers to develop products that consume a large quantity of, fixed costs. That is why utilizing such a perspective can reduce investment risk in a new product development. Combining the production services by... 

    Feasibility Study of Painting Line by Electro Deposition in Zagrosskhodro

    , M.Sc. Thesis Sharif University of Technology Fakouri, Hojjatollah (Author) ; Hooshmand, Mahmoud (Supervisor)
    Assurance about projects and industrial plans success always had been one of the most important concerns of investors. Car manufacturing industry is not excluded. In this project the painting line in zagrosskhodro company using electro deposition method is reviewed , analyzed, and investment feasibility study of such method is investigated . All aspect of investment including financial and economic aspect is reviewed by UNIDO methodology.
    The outcome is described here briefly.
    1- Production volume in this plan in complete capacity is equal to 40000 bodies in a year.
    2- The primary fixed investment capital is 132,187,912,140 Rls.
    3- Sum of fixed expenses of production is ... 

    An Expert Information System for Computer-Aided Process Planning with an Integrated Data Structure Based on the STEP Standard (ISO 10303)

    , M.Sc. Thesis Sharif University of Technology Nosratbakhsh, Mohamad (Author) ; Hooshmand, Mahmoud (Supervisor)
    Considering the significant role of process plans in computer-aided manufacturing, a lot of researches have been conducted to fulfill the gap between the different aspects of process planning systems. However, there is still a wide gap for process planning systems to completely fulfill the requirements. In this research an expert system for turning operation is proposed. The system is capable of suggesting appropriate machining parameters with the aid of an inference engine. The proposed system has an integrated data structure based on ISO 10303 (STEP) standard for both geometric design data and machining parameters. In this system, geometric design data is stored in a database with a data... 

    An Object-Oriented Framework for Integration of Robot and CNC Machines in Flexible Manufacturing Systems

    , M.Sc. Thesis Sharif University of Technology Jahanbin, Pouyan (Author) ; Hooshmand, Mahmoud (Supervisor)
    A flexible manufacturing system (FMS) is a manufacturing system in which there is the capability of handling the variations in product's features which is the result of ever-changing customer demands. The flexibility attributes to utilize the resources in a more effective manner. On the other hand, the control of such systems would become more complicated. FMS needs CNC machines and robots and other resources for establishing the flexibility and enhancing the efficiency of the whole system. Also it needs to integrate the resources to reach flexibility. In order to reach this goal, an integrator framework is proposed in which the machining data of CNC machine is received through a STEP-NC... 

    Efficient secure channel coding scheme based on low-density Lattice codes

    , Article IET Communications ; Volume 10, Issue 11 , 2016 , Pages 1365-1373 ; 17518628 (ISSN) Hooshmand, R ; Aref, M. R ; Sharif University of Technology
    Institution of Engineering and Technology  2016
    In this study, the authors introduce an efficient secure channel coding (joint cryptography-channel coding) scheme based on Latin square low-density lattice codes (Latin square LDLCs) over unconstrained power additive white Gaussian noise channel. They benefit the properties of Latin square LDLCs to dramatically reduce the key size of the proposed scheme while having an acceptable level of security compared with previous similar schemes. To reduce the key size, they consider two approaches: (i) saving the generating sequence of parity-check matrix of used Latin square LDLC as the part of secret key set; (ii) employing the Hermite normal form of the generator matrix of used Latin square LDLC... 

    Polar code-based secure channel coding scheme with small key size

    , Article IET Communications ; Volume 11, Issue 15 , 2017 , Pages 2357-2361 ; 17518628 (ISSN) Hooshmand, R ; Aref, M. R ; Sharif University of Technology
    In this study, the secret polar encoding and secret successive cancellation decoding algorithms are introduced; with these algorithms, secure and efficient communication can be enhanced between the honest parties. Also, the key size of the proposed polar code-based secure channel coding system is reduced significantly compared to the existing systems. To decrease the key size, the authors employ the three following methods: (i) a new approach is proposed to save some bit-channel indices instead of saving the generator matrix of the used polar code; (ii) the permutation and scrambling matrices are not used in this scheme; and (iii) by the help of the properties of polar codes, it does not... 

    Efficient polar code-based physical layer encryption scheme

    , Article IEEE Wireless Communications Letters ; 2017 ; 21622337 (ISSN) Hooshmand, R ; Aref, M. R ; Sharif University of Technology
    This letter presents an efficient polar code-based physical layer encryption (PLE) scheme with a short key length in comparison to the conventional symmetric key cryptosystems. By using the properties of polar codes, we consider several efficient techniques to reduce the key length and the computational overhead of the presented PLE scheme. Moreover, the results of the security analyses show that the proposed scheme has a high level of security against conventional attacks on the PLE schemes. In fact, reducing the key length and the computational overhead of the presented PLE scheme has no effect on its security level, which makes it suitable for secure mobile communication devices with...