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    Lebesgue function for multivariate interpolation by radial basis functions

    , Article Applied Mathematics and Computation ; Volume 187, Issue 1 SPEC. ISS , 2007 , Pages 306-314 ; 00963003 (ISSN) Mehri, B ; Jokar, S ; Sharif University of Technology
    Elsevier Inc  2007
    Abstract
    Multivariate interpolation and approximation is a powerful tool for intuition of real world. In this paper we study Lebesgue function and Lebesgue constant for multivariate interpolation by conditionally positive definite RBFs. Also we give a conjecture about similar Bernstein and Erdös problem to multivariate case. © 2006 Elsevier Inc. All rights reserved  

    Chitosan based supramolecular polypseudorotaxane as a pH-responsive polymer and their hybridization with mesoporous silica-coated magnetic graphene oxide for triggered anticancer drug delivery

    , Article Polymer (United Kingdom) ; Volume 76 , October , 2015 , Pages 52-61 ; 00323861 (ISSN) Pourjavadi, A ; Mazaheri Tehrani, Z ; Jokar, S ; Sharif University of Technology
    Elsevier Ltd  2015
    Abstract
    Chitosan based polyseudorotaxane was designed as a pH-responsive supramolecular polymeric shell around the mesoporous silica-coated magnetic graphene oxide (Fe3O4@GO@mSiO2). It was used for doxorubicin delivery at cancerous tissue in a controlled manner. The core-shell nanocarrier was formed due to electrostatic interaction between chitosan and carboxylated surface of Fe3O4@GO@mSiO2. The maximum release occurred at pH 5.5 (pH of endosomes) because the shell collapsed at this pH. The drug nanocarrier has potential application in tumor therapy due to good pH-sensitive behavior, improved solubility and high colloidal stability in... 

    Functionalized mesoporous silica-coated magnetic graphene oxide by polyglycerol-g-polycaprolactone with pH-responsive behavior: designed for targeted and controlled doxorubicin delivery

    , Article Journal of Industrial and Engineering Chemistry ; 2015 ; ISSN: 1226086X Pourjavadi, A ; Tehrani, Z. M ; Jokar, S ; Sharif University of Technology
    Abstract
    In the present work a novel multifunctional drug nanocarrier was prepared. Polyglycerol-. g-polycaprolactone was grafted on Mesoporous silica-coated magnetic graphene oxide. Doxorubicin, as anticancer drug, was loaded on this carrier. The in vitro drug release showed the controlled pH responsive behavior. At the endosomal pH (pH 5.5) the amount of drug release enhanced. This nanocarrier would have potential application in the tumor therapy owing to its biodegradability, controlled release and pH responsive behavior  

    Dynamic based cost functions for TF/TA flights

    , Article 2005 IEEE Aerospace Conference, Big Sky, MT, 5 March 2005 through 12 March 2005 ; Volume 2005 , 2005 ; 1095323X (ISSN); 0780388704 (ISBN); 9780780388703 (ISBN) Malaek, S. M ; Kosari, A. R ; Jokar, S ; Sharif University of Technology
    2005
    Abstract
    A new methodology has been proposed which offers a systematic approach to use the so called "performance index" or cost function as the basic tool to incorporate the dynamics of the aircraft in the process of trajectory planning. Moreover, by using non-dimensional parameters a better understanding of the dynamic terms are provided. © 2005 IEEE  

    Corrigendum to “Applying ultrasonic fields to separate water contained in medium-gravity emulsions and determining adhesion coefficients” [Ultrasonics Sonochemistry 70 (2021) 105303] (Ultrasonics Sonochemistry (2021) 70, (S1350417720307112), (10.1016/j.ultsonch.2020.105303))

    , Article Ultrasonics Sonochemistry ; Volume 72 , 2021 ; 13504177 (ISSN) Sadatshojaie, A ; Wood, D. A ; Jokar, S. M ; Rahimpour, M. R ; Sharif University of Technology
    Elsevier B.V  2021
    Abstract
    In the original publication, The title of the paper is incorrect. Title should be state “Applying ultrasonic fields to separate water contained in medium-gravity emulsions and determining adhesion coefficients”. The authors would like to apologise for any inconvenience caused. © 2020 Elsevier B.V  

    Applying ultrasonic fields to separate water contained in medium-gravity crude oil emulsions and determining crude oil adhesion coefficients

    , Article Ultrasonics Sonochemistry ; Volume 70 , 2021 ; 13504177 (ISSN) Sadatshojaie, A ; Wood, D. A ; Jokar, S. M ; Rahimpour, M. R ; Sharif University of Technology
    Elsevier B.V  2021
    Abstract
    Separating produced water is a key part of production processing for most crude oils. It is required for quality reasons, and to avoid unnecessary transportation costs and prevent pipework corrosion rates caused by soluble salts present in the water. A complicating factor is that water is often present in crude oil in the form of emulsions. Experiments were performed to evaluate the performance of ultrasonic fields in demulsifying crude oil emulsions using novel pipe-form equipment. A horn-type piezoelectric ultrasonic transducer with a frequency of 20 kHz and power ranging from 80 W to 1000 W was used for experimental purposes. The influences of the intensity of ultrasonic fields,...