An Investigation on Photocatalytic Behavior of Heavily Doped Titania

, M.Sc. Thesis Sharif University of Technology Hoseinian, Farideh (Author) ; Nemati, Ali (Supervisor)

Abstract

TiO2 has been considered the most promising photocatalyst for the degradation of pollutants in air or water; however, it shows poor absorption of visible light and requires ultraviolet (UV) light for activation. We have successfully synthesized a visible-light-active carbon and nitrogen and yttrium tridoped TiO2 catalyst. In this study, Nanocrystalline photocatalysts of TiO2 doped with yttrium, codoped with carbon and nitrogen and tridoped with carbon and nitrogen and yttrium were prepared by the sol–gel method and investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), diffuse reflectance spectroscopy ( DRS), Scanning electron microscopy (SEM/EDS) and...

Test Reuse in GUI-Based Applications Using Word Embedding

, M.Sc. Thesis Sharif University of Technology Khalili, Farideh Sadat (Author) ; Heydarnoori, Abbas (Supervisor)

Abstract

Testing is one of the most important and time-consuming steps in the Software Development Life Cycle. Especially, in recent methodologies like agile in which change is an important feature and they take place in iterations with each iteration taking place in a limited time. Recent studies suggest approaches to automatically generate test cases for the applications. For GUI-based applications, test cases are composed of a chain of events that are activated by the user. For these applications, we can generate test cases by simulating the chain of events that get activated by the user. Semantic-based approaches use the semantic matching of the events and their related widgets, to generate test...

Environmental assessment of carbon capture and storage projects for power plant

, Article Air and Waste Management Association - Addressing Climate Change: Emerging Policies, Strategies, and Technological Solutions, 9 September 2015 through 10 September 2015 ; 2016 , Pages 133-137 ; 9781510824683 (ISBN) Hoseinian Barzi, S. S ; Arhami, M ; Sharif University of Technology

Air and Waste Management Association 2016

Synthesis of C-N-Y tri-doped TiO2 photo-catalyst for MO degradation and characterization

, Article Materials Research Express ; Volume 2, Issue 10 , October , 2015 ; 20531591 (ISSN) Hoseinian Maleki, F ; Nemati, A ; Joya, Y. F ; Sharif University of Technology

Institute of Physics Publishing 2015

Abstract

In this researchC-N-Y tri-doped TiO2 nanopowders were synthesized by the sol-gel method. TheC- N-Y Ti O2 photo-catalyst was prepared using hexamine and yttrium nitrate Hexahydrate as the dopant precursors. Methyl-orange (MO) was used to study the photocatalytic performance of the doped Ti O2 underUVirradiation. The synthesized samples were characterized by x-ray diffraction, x-ray photoelectron spectroscopy,UV-vis diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, Transmission electron microscopy, Photoluminescence and Field emission scanning electron microscopy. The tri-doped sample with8%N, 0.4% Y and 1.5%Cexhibited enhanced photocatalytic efficiencies. After 100...

Magnetic sorting of circulating tumor cells based on different-level antibody expression using a divergent serpentine microchannel

, Article Physics of Fluids ; Volume 35, Issue 12 , 2023 ; 10706631 (ISSN) Ebrahimi, S ; Rostami, Z ; Alishiri, M ; Shamloo, A ; Hoseinian, M. A ; Sharif University of Technology

American Institute of Physics Inc 2023

Abstract

The privilege of early cancer detection is entangled with many people's lives. Thus, providing an efficient tool to analyze circulating tumor cells (CTCs) would be an immense asset. In this study, a CTC sorting mechanism is introduced by classifying CTCs based on their EpCAM (epithelial cell adhesion molecule) level, a cell surface marker applicable to cancer staging. For this purpose, an integrated microfluidic chip was designed to focus and separate CTCs from blood cells in a divergent serpentine microchannel, and simultaneously, sort CTCs into three categories [low-EpCAM (N1 = 406), medium-EpCAM (N2 = 693), and high-EpCAM (N3 = 1693)] using a magnetic field. The velocity optimizations,...