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    Maestro: A high performance AES encryption/decryption system

    , Article Proceedings - 17th CSI International Symposium on Computer Architecture and Digital Systems, CADS 2013 ; October , 2013 , Pages 145-148 ; 9781479905621 (ISBN) Biglari, M ; Qasemi, E ; Pourmohseni, B ; Computer Society of Iran; IPM ; Sharif University of Technology
    IEEE Computer Society  2013
    Abstract
    High throughput AES encryption/decryption is a necessity for many of modern embedded systems. This article presents a high performance yet cost efficient AES system. Maestro can be used in a wide range of embedded applications with various requirements and limitations. Maestro is about one million times faster than the pure software implementation. The Maestro architecture is composed of two major components; the soft processor aimed at system initialization and control, and the hardware AES engine for high performance AES encryption/decryption. A ten stage implicit pipelined architecture is considered for the AES engine. Two novel techniques are proposed in design of AES engine which enable... 

    A biomimetic heparinized composite silk-based vascular scaffold with sustained antithrombogenicity

    , Article Scientific Reports ; Volume 7, Issue 1 , 2017 ; 20452322 (ISSN) Zamani, M ; Khafaji, M ; Naji, M ; Vossoughi, M ; Alemzadeh, I ; Haghighipour, N ; Sharif University of Technology
    2017
    Abstract
    Autologous grafts, as the gold standard for vascular bypass procedures, associated with several problems that limit their usability, so tissue engineered vessels have been the subject of an increasing number of works. Nevertheless, gathering all of the desired characteristics of vascular scaffolds in the same construct has been a big challenge for scientists. Herein, a composite silk-based vascular scaffold (CSVS) was proposed to consider all the mechanical, structural and biological requirements of a small-diameter vascular scaffold. The scaffold's lumen composed of braided silk fiber-reinforced silk fibroin (SF) sponge covalently heparinized (H-CSVS) using Hydroxy-Iron Complexes (HICs) as... 

    Effects of electrophoretic deposition parameters on the photocatalytic activity of TiO2 films: Optimization by response surface methodology

    , Article Colloids and Surfaces A: Physicochemical and Engineering Aspects ; Vol. 452, Issue. 1 , 2014 , pp. 1-8 ; ISSN: 09277757 Mohammadi, M. M ; Vossoughi, M ; Feilizadeh, M ; Rashtchian, D ; Moradi, S ; Alemzadeh, I ; Sharif University of Technology
    2014
    Abstract
    In this work, the electrophoretic deposition method was utilized to immobilize TiO2 particles on stainless steel substrates. In addition, for the first time, statistics-based experimental design using response surface methodology was employed to investigate the effect of four key coating parameters (i.e. applied voltage, calcination temperature, photocatalyst weight percentage, and deposition time) on the photocatalytic degradation. Analysis of variance revealed that the proposed model was adequate. X-ray diffraction and scanning electron microscope were used to evaluate the effects of the parameters on degradation efficiency. The optimum applied voltage, calcination temperature, catalyst... 

    Modeling and comparison of different simulations for release of amoxicillin from chitosan hydrogels

    , Article Polymer - Plastics Technology and Engineering ; Volume 52, Issue 11 , 2013 , Pages 1147-1153 ; 03602559 (ISSN) Mirzaei B., E ; Ramazani S. A., A ; Shafiee, M ; Alemzadeh, I ; Ebrahimi, H ; Sharif University of Technology
    2013
    Abstract
    In this research work, different devices made of glutaraldehyde cross-linked chitosan hydrogels loaded by amoxicillin, have been prepared using freeze-drying method. Effects of system parameters such as cross-linker concentration, pH, and gel structure on the morphology and release behavior of devices have been investigated using standard methods. Morphological studies were performed using SEM instrument and controlled releases are followed via spectrophotometeric method. Reaction of glutaraldehyde with chitosan has been studied using FTIR instrument. SEM micrographs have shown that with increasing cross-linker percentage in hydrogel, pore sizes increased where pore size distribution... 

    Experimental Studies for Construction of a Microbial Fuel Cell (MFC) in Continuous Flow Mode

    , M.Sc. Thesis Sharif University of Technology Sadeghi Haskoo, Mohammad Amin (Author) ; Vossoughi, Manoochehr (Supervisor) ; Aalemzadeh, Iran (Supervisor)
    Abstract
    In this research performance of microbial fuel cells (MFCs) in continuous flow mode was studied. Different anodic chambers were tested and it was found that granular activated carbons (GACs) produced the highest power density (1228 mW/m3) in comparison with multiple anodes (731 mW/m3), single anode (294 mW/m3) and polymeric packings (40 mW/m3). It was also shown that in a plug-anodic chamber (PAC) the power output is reduced by reducing agitation of anodic volume. Adding more GACs to anodic chamber results in power increase, however by increasing occupied volume from 80% to 100% the power increase was negligible in result of cathodic reactions limitations. Feed flowrate was increased from... 

    Evaluation of Process Partitioning of Enzyme in Polymer-Salt Aqueous Two-PHase Systems

    , M.Sc. Thesis Sharif University of Technology Kamankesh, Amin (Author) ; Alamzadeh, Iran (Supervisor) ; Vossoughi, Manouchehr (Supervisor) ; Pazuki, Gholamreza (Supervisor)
    Abstract
    In this research, the amount of partitioning Invertase to be evaluated in nine systems, these systems contain Peg 2000,Peg 4000 & Peg 6000 with three different salt.In first, Binodal curve for nine systems to be drown by cloudy point method, then five point be selected in each system such as sample feed. Invertase in every systems to be solved in constant weight fraction. The analysis of every phasesto be achieved by Merchuk method. For correlation data of this method to be used by Othmer-Tobias method and then using equation Mrchvk ensure the accuracy of phase analysis , analysis of the results obtained with the UV method was studied.Accuracy of UV analysis was studied by using lattice... 

    On endurance of erasure codes in SSD-based storage systems

    , Article Proceedings - 17th CSI International Symposium on Computer Architecture and Digital Systems, CADS 2013 ; 2013 , Pages 67-72 ; 9781479905621 (ISBN) Chamazcoti, S. A ; Miremadi, S. G ; Asadi, H ; Computer Society of Iran; IPM ; Sharif University of Technology
    IEEE Computer Society  2013
    Abstract
    The wear-out of flash-based Solid-State Drives (SSDs) is a main concern that significantly affects their reliability. One major parameter that accelerates SSD wear-out is the number of write-cycles committed to flash chips. The number of write-cycles in SSD-based disk subsystem is highly dependent on the erasure code implemented in Redundant Array of Independent Disks (RAIDs). In this paper, we investigate the impact of erasure codes and the configuration of storage subsystems (i.e., the number of disks participated in the RAID array and stripe unit size) on the endurance of storage systems. The number of write-cycles is considered as a metric to evaluate the endurance of storage system. We... 

    ISP: Using idle SMs in hardware-based prefetching

    , Article Proceedings - 17th CSI International Symposium on Computer Architecture and Digital Systems, CADS 2013 ; October , 2013 , Pages 3-8 ; 9781479905621 (ISBN) Falahati, H ; Abdi, M ; Baniasadi, A ; Hessabi, S ; Computer Society of Iran; IPM ; Sharif University of Technology
    IEEE Computer Society  2013
    Abstract
    The Graphics Processing Unit (GPU) is the most promising candidate platform for faster rate of improvement in peak processing speed, low latency and high performance. The highly programmable and multithreaded nature of GPUs makes them a remarkable candidate for general purpose computing. However, supporting non-graphics computing on graphics processors requires addressing several architecture challenges. In this paper, we focus on improving performance by better hiding long waiting time to transfer data from the slow global memory. Thereupon study an effective light-overhead prefetching mechanism, which utilizes idle processing elements. Our results show that we can potentially improve... 

    A novel test strategy and fault-tolerant routing algorithm for NoC routers

    , Article Proceedings - 17th CSI International Symposium on Computer Architecture and Digital Systems ; 2013 , Pages 133-136 ; 9781479905621 (ISBN) Alamian, S. S ; Fallahzadeh, R ; Hessabi, S ; Alirezaie, J ; Computer Society of Iran; IPM ; Sharif University of Technology
    IEEE Computer Society  2013
    Abstract
    In this paper, we present a novel routing algorithm in order to avoid deadlock and packet dropping. In our proposed algorithm the network-on-chip (NoC) is capable of tolerating faults in presence of control faults in combinational parts of routers. In addition, by modifying the functionality of the router, the router is enabled to test its own, as well as the preceding router's functionality based on the routing algorithm, destination address and previous router's situation. Each router recognizes the faulty neighbor and announces it to successive routers. In this scheme no extra packets will be generated. We analyze the effects of our method on latency, power consumption and drop rate. Our... 

    Simulation, Evaluation and Fabrication of a Two-step Microfluidic System to Separate Circulating Tumor Cells

    , M.Sc. Thesis Sharif University of Technology Mir Mohammad Sadeghi, Fatemeh Sadat (Author) ; Vosoughi, Manouchehr (Supervisor) ; Alamzadeh, Iran (Supervisor)
    Abstract
    Cancer is an abnormal growth of cells which is one of the major cause of worldwide’s mortality. Circulating Tumor Cells (CTCs) are rare cancer cells released from the primary or metastatic tumors and transported though the peripheral circulatory system and spreads in body and seize healthy organs. Early detection of CTCs can help in overtaking the cancer, hence isolation of CTCs is an essential step for many therapeutics. In spite of its clinical potential, the isolation and detection of CTCs has been a challenging task due to its rare presence amongst other blood cells (as low as 1–10 CTCs per billions of blood cells), similarity to white blood cell in size and also variability in terms of... 

    Measurement of partition coefficients of β-amylase and amyloglucosidase enzymes in aqueous two-phase systems containing poly(ethylene glycol) and Na2SO4/KH2PO4 at different temperatures

    , Article Fluid Phase Equilibria ; Volume 292, Issue 1-2 , May , 2010 , Pages 80-86 ; 03783812 (ISSN) Shahriari, Sh ; Taghikhani, V ; Vossoughi, M ; Safe kordi, A. A ; Alemzadeh, I ; Pazuki, G. R ; Sharif University of Technology
    2010
    Abstract
    In this research, partitioning of β-amylase and amyloglucosidase was investigated in polymer-salt aqueous two-phase systems containing poly(ethylene glycol) (PEG) with different molecular weights such as 4000, 6000 and 10,000 and Na2SO4 or KH2PO4. The experimental partition coefficients were measured at T = (298.5, 301.5, 303.5, 305.5 and 308) K. The results showed that the concentration of salt in feed had more effect on partition coefficients of β-amylase and amyloglucosidase in aqueous two-phase systems than the concentration of polymer in initial feed. Also, the results indicated that temperature had a small effect on partitioning of β-amylase and amyloglucosidase enzymes. The partition... 

    Application of Ultrasonic Technique to Improve Food Processing and Yield Enhancement in Food Industry

    , M.Sc. Thesis Sharif University of Technology Halalipour, Ali (Author) ; Roosta Azad, Reza (Supervisor) ; Aalemzadeh, Iran (Supervisor) ; Ghotbi, Siroos (Supervisor)
    Abstract
    In this project we focused on Ultrasonic waves as novel, effective and well-controllable means for cell wall disruption and disintegration to provide faster and more complete penetration of solvent into cellular materials and improve sugar mass transfer and extraction from sugarcane and sugar beet. Impact of frequency, temperature, power density and reactor shape on Ultrasonic wave efficiency in extraction process has been investigated and the result was utilized to design a semi-pilot reactor. In the optimum situation, sucrose extraction from sugarcane improved to 4.51 gr/100 ml H2O that had a significant increasing from 2.1 gr/100 ml H2O extraction in thermal only process at 70 °C. Optimum... 

    Study and optimization of Amino Acid Extraction by emulsion Liquid Membrane

    , Article CHISA 2006 - 17th International Congress of Chemical and Process Engineering, Prague, 27 August 2006 through 31 August 2006 ; 2006 ; 8086059456 (ISBN); 9788086059457 (ISBN) Mohagheghe, E ; Vosoughi, M ; Alemzadeh, I ; Hexion Specialty Chemicals; Mitsubishi Chemical Corporation; CS Cabot; Zentiva; BorsodChem MCHZ ; Sharif University of Technology
    2006
    Abstract
    A batch extraction of an essential amino acid, Phenylalanine, from an aqueous solution of different concentrations by an Emulsion Liquid Membrane (ELM) was developed using D2EHPA as a cationic carrier, Span 80 as the surfactant, paraffin and kerosene as the diluents, and HCl as the internal electrolyte. All effective parameters such as pH of initial aqueous external phase, electrolyte concentration in aqueous internal phase, carrier and surfactant concentration in emulsion, volume ratio of the organic to aqueous internal phase (Roi), volume ratio of the W/O emulsion to aqueous external phase (Rew) and time were examined and optimized using Taguchi method which was the first time of... 

    Curcumin sustained release with a hybrid chitosan-silk fibroin nanofiber containing silver nanoparticles as a novel highly efficient antibacterial wound dressing

    , Article Nanomaterials ; Volume 12, Issue 19 , 2022 ; 20794991 (ISSN) Heydari Foroushani, P ; Rahmani, E ; Alemzadeh, I ; Vossoughi, M ; Pourmadadi, M ; Rahdar, A ; Díez Pascual, A. M ; Sharif University of Technology
    MDPI  2022
    Abstract
    Drug loading in electrospun nanofibers has gained a lot of attention as a novel method for direct drug release in an injury site to accelerate wound healing. The present study deals with the fabrication of silk fibroin (SF)-chitosan (CS)-silver (Ag)-curcumin (CUR) nanofibers using the electrospinning method, which facilitates the pH-responsive release of CUR, accelerates wound healing, and improves mechanical properties. Response surface methodology (RSM) was used to investigate the effect of the solution parameters on the nanofiber diameter and morphology. The nanofibers were characterized via Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Scanning Electron... 

    Unraveling cancer metastatic cascade using microfluidics-based technologies

    , Article Biophysical Reviews ; Volume 14, Issue 2 , 2022 , Pages 517-543 ; 18672450 (ISSN) Hakim, M ; Kermanshah, L ; Abouali, H ; Hashemi, H. M ; Yari, A ; Khorasheh, F ; Alemzadeh, I ; Vossoughi, M ; Sharif University of Technology
    Springer Science and Business Media Deutschland GmbH  2022
    Abstract
    Cancer has long been a leading cause of death. The primary tumor, however, is not the main cause of death in more than 90% of cases. It is the complex process of metastasis that makes cancer deadly. The invasion metastasis cascade is the multi-step biological process of cancer cell dissemination to distant organ sites and adaptation to the new microenvironment site. Unraveling the metastasis process can provide great insight into cancer death prevention or even treatment. Microfluidics is a promising platform, that provides a wide range of applications in metastasis-related investigations. Cell culture microfluidic technologies for in vitro modeling of cancer tissues with fluid flow and the... 

    Clinical uses and survival study of free and encapsulated probiotic bacteria in fruit juices: A review

    , Article Applied Food Biotechnology ; Volume 8, Issue 3 , 2021 , Pages 161-179 ; 23455357 (ISSN) Alemzadeh, I ; Afarin, M ; Dehghan, A ; Sani, M. A ; Teimouri, M ; Seilani, F ; Abbasi, P ; Vaziri, A. S ; Sharif University of Technology
    National Nutrition and Food Technology Research Institute  2021
    Abstract
    Background and Objective: Probiotics are dietary supplements with potential health benefits for humans when consumed regularly at appropriate quantities. The latest evidence shows possible beneficial effects of probiotics in COVID-19 treatment. Interests in probiotic consumption have led to provide products such as probiotic juices with vitamins, minerals, prebiotics and appropriate levels of probiotics to the market in free and encapsulated forms, which are not fully addressed in scientific literatures. The objective of this review was to investigate effects of probiotics for the management of human health. Other objectives included study on effects of free and encapsulated forms of... 

    Clinical uses and survival study of free and encapsulated probiotic bacteria in fruit juices: A review

    , Article Applied Food Biotechnology ; Volume 8, Issue 3 , 2021 , Pages 161-179 ; 23455357 (ISSN) Alemzadeh, I ; Afarin, M ; Dehghan, A ; Sani, M. A ; Teimouri, M ; Seilani, F ; Abbasi, P ; Vaziri, A. S ; Sharif University of Technology
    National Nutrition and Food Technology Research Institute  2021
    Abstract
    Background and Objective: Probiotics are dietary supplements with potential health benefits for humans when consumed regularly at appropriate quantities. The latest evidence shows possible beneficial effects of probiotics in COVID-19 treatment. Interests in probiotic consumption have led to provide products such as probiotic juices with vitamins, minerals, prebiotics and appropriate levels of probiotics to the market in free and encapsulated forms, which are not fully addressed in scientific literatures. The objective of this review was to investigate effects of probiotics for the management of human health. Other objectives included study on effects of free and encapsulated forms of... 

    Proceedings of the first Regional Conference on Magnetic and Superconducting Materials (MSM-99); Tehran, Iran, 27-30 Sept. 1999

    , Book Regional Conference on Magnetic and Superconducting Materials (1st: 1999: Tehran, Iran) ; Akhavan, M ; Jensen, J ; Kitazawa, K
    World Scientific  2000

    A novel fuzzy approach to speech recognition

    , Article Proceedings - HIS'04: 4th International Conference on Hybrid Intelligent Systems, Kitakyushu, 5 December 2004 through 8 December 2004 ; 2005 , Pages 340-345 ; 0769522912 (ISBN) Halavati, R ; Shouraki, S.B ; Eshraghi, M ; Alemzadeh, M ; Ziaie, P ; Ishikawa M ; Hashimoto S ; Paprzycki M ; Barakova E ; Yoshida K ; Koppen M ; Corne D.M ; Abraham A ; Sharif University of Technology
    2005
    Abstract
    This paper presents a novel approach to speech recognition using fuzzy modeling. The task begins with conversion of speech spectrogram into a linguistic description based on arbitrary colors and lengths. While phonemes are also described using these fuzzy measures, and recognition is done by normal fuzzy reasoning, a genetic algorithm optimizes phoneme definitions so that to classify samples into correct phonemes. The method is tested over a standard speech data base and the results are presented. © 2005 IEEE  

    The proceedings of the Fourth International Conference on Civil Engineering; May 4-6, 1997, Sharif University of Technology, Tehran, Iran

    , Book International Conference on Civil Engineering (4th: 1997: Tehran, Iran) ; Sharif University of Technology. Dept. of Civil of Engineering
    Sharif University of Technology  1997
    Abstract
    v.1. Structural engineering and earthquake engineering.-- v.2. Geotechnical engineering.-- v.3. Transportation, civil engineering materials, construction management.-- v.4. Water resources and environmental engineering, surveying and mapping