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  1. Article: Analysis of Dynamics Targeting CNT-Based Drug Delivery through Lung Cancer Cells: Design, Simulation, and Computational Approach.

    Sohrabi, Nafiseh / Alihosseini, Afshar / Pirouzfar, Vahid / Pedram, Maysam Zamani

    Membranes

    2020  Volume 10, Issue 10

    Abstract: Nowadays, carbon nano (CN) structures and specifically carbon nanotubes (CNTs), because of the nanotube's nanoscale shape, are widely used in carrier and separation applications. The conjugation of CNTs with polysaccharide, proteins, drugs, and magnetic ... ...

    Abstract Nowadays, carbon nano (CN) structures and specifically carbon nanotubes (CNTs), because of the nanotube's nanoscale shape, are widely used in carrier and separation applications. The conjugation of CNTs with polysaccharide, proteins, drugs, and magnetic nanoparticles provides a chance for smart targeting and trajectory manipulation, which are used in the crucial field of life science applications, including for cancer disease diagnostics and treatments. Providing an optimal procedure for delivering a drug to a specific area based on mathematical criteria is key in systemic delivery design. Trajectory guidance and applied force control are the main parameters affected by systemic delivery. Moreover, a better understanding of the tissue parameters and cell membrane molecular behaviour are other factors that can be indirectly affected by the targeted delivery. Both sides are an essential part of successful targeting. The lung is one of the challenging organs for drug delivery inside the human body. It has a large surface area with a thin epithelium layer. A few severe diseases directly involve human lung cells, and optimal and successful drug delivery to the lung for the treatment procedure is vital. In this paper, we studied functionalized CNTs' targeted delivery via crossing through the lung cell membrane. Molecular dynamics (MD) software simulated all the interaction forces. Mathematical modelling of the cell membrane and proposed delivery system based on the relation of velocity and force has been considered. Dynamics equations for CNTs were defined in the time and frequency domain using control theory methods. The proposed delivery system consists of two main parts: crossing through the cell membrane and targeting inside the cell. For both steps, a mathematical model and a proper magnetic field profile have been proposed. The designed system provides criteria for crossing through the cell membrane within 30 s to 5 min and a translocation profile of 1 to 100 Å.
    Language English
    Publishing date 2020-10-14
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2077-0375
    ISSN 2077-0375
    DOI 10.3390/membranes10100283
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Parameter estimation and interval type-2 fuzzy sliding mode control of a z-axis MEMS gyroscope.

    Fazlyab, Mahyar / Pedram, Maysam Zamani / Salarieh, Hassan / Alasty, Aria

    ISA transactions

    2013  Volume 52, Issue 6, Page(s) 900–911

    Abstract: This paper reports a hybrid intelligent controller for application in single axis MEMS vibratory gyroscopes. First, unknown parameters of a micro gyroscope including unknown time varying angular velocity are estimated online via normalized continuous ... ...

    Abstract This paper reports a hybrid intelligent controller for application in single axis MEMS vibratory gyroscopes. First, unknown parameters of a micro gyroscope including unknown time varying angular velocity are estimated online via normalized continuous time least mean squares algorithm. Then, an additional interval type-2 fuzzy sliding mode control is incorporated in order to match the resonant frequencies and to compensate for undesired mechanical couplings. The main advantage of this control strategy is its robustness to parameters uncertainty, external disturbance and measurement noise. Consistent estimation of parameters is guaranteed and stability of the closed-loop system is proved via the Lyapunov stability theorem. Finally, numerical simulation is done in order to validate the effectiveness of the proposed method, both for a constant and time-varying angular rate.
    Language English
    Publishing date 2013-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2012746-7
    ISSN 1879-2022 ; 0019-0578
    ISSN (online) 1879-2022
    ISSN 0019-0578
    DOI 10.1016/j.isatra.2013.05.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: 5-Axis CNC Micromilling for Rapid, Cheap, and Background-Free NMR Microcoils.

    Moxley-Paquette, Vincent / Lane, Daniel / Soong, Ronald / Ning, Paris / Bastawrous, Monica / Wu, Bing / Pedram, Maysam Zamani / Haque Talukder, Md Aminul / Ghafar-Zadeh, Ebrahim / Zverev, Dimitri / Martin, Richard / Macpherson, Bob / Vargas, Mike / Schmidig, Daniel / Graf, Stephan / Frei, Thomas / Al Adwan-Stojilkovic, Danijela / De Castro, Peter / Busse, Falko /
    Bermel, Wolfgang / Kuehn, Till / Kuemmerle, Rainer / Fey, Michael / Decker, Frank / Stronks, Henry / Sullan, Ruby May A / Utz, Marcel / Simpson, André J

    Analytical chemistry

    2020  Volume 92, Issue 23, Page(s) 15454–15462

    Abstract: The superior mass sensitivity of microcoil technology in nuclear magnetic resonance (NMR) spectroscopy provides potential for the analysis of extremely small-mass-limited samples such as eggs, cells, and tiny organisms. For optimal performance and ... ...

    Abstract The superior mass sensitivity of microcoil technology in nuclear magnetic resonance (NMR) spectroscopy provides potential for the analysis of extremely small-mass-limited samples such as eggs, cells, and tiny organisms. For optimal performance and efficiency, the size of the microcoil should be tailored to the size of the mass-limited sample of interest, which can be costly as mass-limited samples come in many shapes and sizes. Therefore, rapid and economic microcoil production methods are needed. One method with great potential is 5-axis computer numerical control (CNC) micromilling, commonly used in the jewelry industry. Most CNC milling machines are designed to process larger objects and commonly have a precision of >25 μm (making the machining of common spiral microcoils, for example, impossible). Here, a 5-axis MiRA6 CNC milling machine, specifically designed for the jewelry industry, with a 0.3 μm precision was used to produce working planar microcoils, microstrips, and novel microsensor designs, with some tested on the NMR in less than 24 h after the start of the design process. Sample wells could be built into the microsensor and could be machined at the same time as the sensors themselves, in some cases leaving a sheet of Teflon as thin as 10 μm between the sample and the sensor. This provides the freedom to produce a wide array of designs and demonstrates 5-axis CNC micromilling as a versatile tool for the rapid prototyping of NMR microsensors. This approach allowed the experimental optimization of a prototype microstrip for the analysis of two intact adult
    MeSH term(s) Animals ; Costs and Cost Analysis ; Daphnia/chemistry ; Equipment Design ; Magnetic Resonance Spectroscopy/economics ; Magnetic Resonance Spectroscopy/instrumentation ; Mechanical Phenomena ; Microtechnology/instrumentation ; Time Factors
    Language English
    Publishing date 2020-11-10
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.0c03126
    Database MEDical Literature Analysis and Retrieval System OnLINE

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