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Institution

Amirkabir University of Technology

EducationTehran, Iran
About: Amirkabir University of Technology is a education organization based out in Tehran, Iran. It is known for research contribution in the topics: Nonlinear system & Fuzzy logic. The organization has 15254 authors who have published 31165 publications receiving 487551 citations. The organization is also known as: Tehran Polytechnic & Tehran Polytechnic University.


Papers
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Journal ArticleDOI
TL;DR: This paper studies the mechanical properties of porous biomaterials made from a relatively new unit cell, namely truncated cube and presents analytical solutions that relate the dimensions of the repeating unit cell to the elastic modulus, Poisson's ratio, yield stress, and buckling load of those porous structures.

100 citations

Journal ArticleDOI
TL;DR: In this paper, the authors used the Gurson-Tvergaard-Needleman (GTN) damage model to determine the forming limit curve of anisotropic sheet metals.

100 citations

Journal ArticleDOI
TL;DR: Not only chattering problem is reduced significantly, but also the robustness, regulation, and dynamic response of the SMC system are not affected, and the derivation and implementation of the proposed SMC is so simple with less current sensors and without high computational burden.
Abstract: In three-phase transformerless uninterruptible power supply applications, a four-leg inverter is an excellent solution to handle the full unbalanced loading condition. A sliding-mode control (SMC) system is well known for robustness, simple implementation, high stability, and suitable solution for variable structure systems like power converters. However, it suffers from the chattering problem, variable switching frequency, and high electromagnetic compatibility noises. In this paper, a high performance SMC system is proposed to control the output voltage of the four-leg inverter with fixed switching frequency. In the proposed SMC system, as a considerable achievement, not only chattering problem is reduced significantly, but also the robustness, regulation, and dynamic response of the SMC system are not affected. Also, the derivation and implementation of the proposed SMC is so simple with less current sensors and without high computational burden. Furthermore, fixed switching frequency offers remarkable simplicity of the converter and filter design. Several experimental results on a 3-kW test bench verify the superior performance of the proposed SMC system according to the IEC62040-3 standard.

100 citations

Journal ArticleDOI
TL;DR: This manuscript critically reviews recent literature to specifically illustrate nano-engineered effective and rapid solutions for rapid detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) caused the COVID-19 pandemic that has been spreading around the world since December 2019. More than 10 million affected cases and more than half a million deaths have been reported so far, while no vaccine is yet available as a treatment. Considering the global healthcare urgency, several techniques, including whole genome sequencing and computed tomography imaging have been employed for diagnosing infected people. Considerable efforts are also directed at detecting and preventing different modes of community transmission. Among them is the rapid detection of virus presence on different surfaces with which people may come in contact. Detection based on non-contact optical techniques is very helpful in managing the spread of the virus, and to aid in the disinfection of surfaces. Nanomaterial-based methods are proven suitable for rapid detection. Given the immense need for science led innovative solutions, this manuscript critically reviews recent literature to specifically illustrate nano-engineered effective and rapid solutions. In addition, all the different techniques are critically analyzed, compared, and contrasted to identify the most promising methods. Moreover, promising research ideas for high accuracy of detection in trace concentrations, via color change and light-sensitive nanostructures, to assist fingerprint techniques (to identify the virus at the contact surface of the gas and solid phase) are also presented.

100 citations

Journal ArticleDOI
TL;DR: It is found from the calculations that the adsorption process of drug molecules on the BN nanosheet is exothermic and occurs spontaneously, and the polarity for the drug loaded complexes, offers the possibility of improving the condition of solubility, which is favorable for drug delivery in biological media.
Abstract: Density functional theory (DFT) calculations and molecular dynamic (MD) simulations were accomplished to comprehend the nature of the interactions between 5-fluorouracil (FU)/6-mercaptopurine (MP)/6-thioguanine (TG) anticancer drugs and hexagonal boron nitride (BN) nanosheet as a drug delivery system. It is found from the calculations that the adsorption process of drug molecules on the BN nanosheet is exothermic and occurs spontaneously. The polarity for the drug loaded complexes, offers the possibility of improving the condition of solubility, which is favorable for drug delivery in biological media. Orbital energy and density of state (DOS) calculations show that HOMO-LUMO energy gap of BN nanosheet decreases upon the adsorption of drug molecules. The quantum molecular descriptors show that the absorption of drugs on BN nanosheet increases the chemical reactivity. The results of the energy decomposition analysis (EDA) indicated that the dispersion interaction plays a predominant role in the stabilization of the drug-BN complexes. The intermolecular interactions were also investigated by the noncovalent interaction (NCI) and quantum theory of atoms in molecules (QTAIM) analyses. The MD results showed that the average of the interaction energy values in acidic conditions are lower (absolute values) than corresponding values obtained at neutral pH, which indicated the drug could be released within the target cancer cells. These findings contribute to the development of drug delivery systems based on BN nanosheet for delivery of anticancer drugs.

100 citations


Authors

Showing all 15352 results

NameH-indexPapersCitations
Ali Mohammadi106114954596
Mehdi Dehghan8387529225
Morteza Mahmoudi8333426229
Gaurav Sharma82124431482
Vladimir A. Rakov6745914918
Mohammad Reza Ganjali65103925238
Bahram Ramezanzadeh6235212946
Muhammad Sahimi6248117334
Niyaz Mohammad Mahmoodi6121810080
Amir A. Zadpoor6129411653
Mohammad Hossein Ahmadi6047711659
Goodarz Ahmadi6077817735
Maryam Kavousi5925822009
Keith W. Hipel5854314045
Danial Jahed Armaghani552128400
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202346
2022216
20212,493
20202,359
20192,368
20182,266