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    Ways to Detect Dounterfeit Honey

    , M.Sc. Thesis Sharif University of Technology Emrani, Morteza (Author) ; Alemzadeh, Iran (Supervisor)
    Honey as a food product with plant origin that nearly ninety percent of its dry weight is composed of sugars (mostly fructose and glucose) which has many food and pharmaceutical properties. So honey quality strongly depends on bees feeding practices. For this reason common indexes is defined generally are on the basis of hony composition, for example fructose and reducing sugar portion must be at least thirty and sixty-five percent respectively of total weight or sucrose percent must be utmost five and otherwise puts into question honey quality. To check the quality of five honey samples taken from the market, indexes such as water content, sugar composition(fructose, reducing and total... 

    Design of a Framework for Password Based Symmetric Encryption

    , M.Sc. Thesis Sharif University of Technology Nouri, Sajedeh (Author) ; Aaref, Mohammad Reza (Supervisor) ; Eghlidos, Taraneh (Supervisor)
    Honey Encryption (HE) has been introduced to provide resilience for cryptographic algorithms with low min-entropy keys, against brute-force attacks. Using spurious keys, we have designed an encryption framework consisting of a Distribution Transforming Encoder (DTE), which uses a Password Based Encryption (PBE) algorithm in CTR mode of operation. The proposed DTE block benefits from an efficient error-correcting code, acting as a many-to-one mapping scheme. The proposed framework gets some spurious key-plausible looking plaintext tuples as input and outputs a ciphertext. The structure of the proposed scheme is designed to increase the uncertainty of attacker about the correct plaintext, even... 

    Preparation of Nanobiocomposites Based on Halloysite Nanotubes-Zein and Evaluation of their Performance for Thin Film Microextraction

    , M.Sc. Thesis Sharif University of Technology Gordan, Hasti (Author) ; Bagheri, Habib (Supervisor)
    In this work, a biocompatible sorbent based on halloysite nanotubes-zein bionanocomposite for direct-immersion thin film microextraction (DI-TFME) is introduced. Zein as a biodegradable, low cost and accessible polymer was used to prepare a flexible thin film with the possession of different interactions and good adsorption capacity. To improve the mechanical and chemical resistance of the film, halloysite nanotubes were combined with zein to prepare the thin film sorbent. The film was used for TFME of 16 pesticides from different chemical classes, including organochlorines and organophosphates followed by gas chromatography with electron capture detector (GC-ECD). To achieve the maximum... 

    A dynamic fuzzy interactive approach for DG expansion planning

    , Article International Journal of Electrical Power and Energy Systems ; Volume 43, Issue 1 , 2012 , Pages 1094-1105 ; 01420615 (ISSN) Esmi Jahromi, M ; Ehsan, M ; Fattahi Meyabadi, A ; Sharif University of Technology
    This paper presents a dynamic multi objective model for distribution network expansion, considering the distributed generators (DGs) and network reinforcements. The proposed model simultaneously optimizes three objective functions namely, total cost, emission cost and technical satisfaction (voltage profile) by finding the optimal schemes of timing, sizing, placement and DG technologies in a long term planning period (dynamic planning). The importance of each objective function can be changed in the interactive steps. The calculation algorithm is based on Chaotic Local Search with Modified Honey Bee Mating Optimization (CLSMHBMO). The effectiveness of the proposed model and the calculation... 

    Fabrication and evaluation of chitosan/gelatin/PVA hydrogel incorporating honey for wound healing applications: An in vitro, in vivo study

    , Article International Journal of Pharmaceutics ; Volume 592 , 2021 ; 03785173 (ISSN) Shamloo, A ; Aghababaie, Z ; Afjoul, H ; Jami, M ; Bidgoli, M. R ; Vossoughi, M ; Ramazani, A ; Kamyabhesari, K ; Sharif University of Technology
    Elsevier B.V  2021
    In this study, physically cross-linked hydrogels were developed by freezing-thawing method while different concentrations of honey were included into the hydrogels for accelerated wound healing. The hydrogel was composed of chitosan, polyvinyl alcohol (PVA), and gelatin with the ratio of 2:1:1 (v/v), respectively. Further, the effect of honey concentrations on antibacterial properties, and cell behavior was investigated. In vivo studies, including wound healing mechanism using rat model and histological analysis of section tissue samples were performed. The results illustrated that the incorporation of honey in hydrogels increased the ultimate strain of hydrogels approximately two times,... 

    An interactive fuzzy multi-objective approach for short term DG planning

    , Article International Journal of Innovative Computing, Information and Control ; Volume 8, Issue 6 , 2012 , Pages 4157-4175 ; 13494198 (ISSN) Jahromi, M. E ; Ehsan, M ; Meyabadi, A. F ; Niknam, T ; Sharif University of Technology
    This paper presents a short term multi-objective planning model for Distributed Generators (DGs) deployment in an electrical network. "Total Cost" and "Emission Cost" are two objective functions which have been going to be minimized in this model by finding the optimal schemes of sizing, placement and DG technologies over a short planning period (static planning). The proposed model can be used for a long term planning period (dynamic planning) in order to consider the timing concept. An interactive fuzzy satisfying method based on Chaotic Local Search and Modified Honey Bee Mating Optimization (CLS-MHBMO) is used to choose the final solution. The effectiveness of the proposed model and... 

    Super-porous semi-interpenetrating polymeric composite prepared in straw for micro solid phase extraction of antibiotics from honey, urine and wastewater

    , Article Journal of Chromatography A ; Volume 1631 , 2020 Asgari, S ; Bagheri, H ; Es-haghi, A ; Sharif University of Technology
    Elsevier B.V  2020
    A cryogel–based semi–interpenetrating polymer network (Cryo–SIPN) was prepared in which conductive polymers such as polyaniline (PANI) and polypyrrole (PPy) were formed within the super porous network of acrylic acid cryogel. For completion of cryo-polymerization, all the constituent solutions were severely mixed and placed into the plastic straws and kept at -20°C and then the synthesized cyrogels were cut into the 1-cm length and freeze dried after washing with water. The Cryo–SIPN polymeric composite was applied in micro solid phase extraction (µSPE) of some selected antibiotic residues from various samples. The µSPE method combined with a high performance liquid...