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On the Relationship between Mind and Matter from Quantum Perspective
, M.Sc. Thesis Sharif University of Technology ; Shafiee, Afshin (Supervisor)
Abstract
In the present era consciousness problem and the relationship between mind and matter as one of the historical and difficult philosophical issues has entered in different scientific fields such as neuroscience, cognitive science and physics. With the introduction of quantum theory and offering its different interpretations, some claimed that understanding the consciousness problem will be possible in the light of quantum theory and some claimed that consciousness is necessary for correct understanding of the quantum theory. Henry Stapp and David Bohm, two prominent physicists with two different approaches to quantum theory try to describe this problem from their point of view. Henry Stapp...
Synthesis and Biological Evaluation of Superparamagnetic Iron Oxide Nanoparticles as Contrast Agents for Bioimaging Applications
,
M.Sc. Thesis
Sharif University of Technology
;
Maddah Hosseini, Hamid
(Supervisor)
;
Oghabian, Mohammad Ali
(Supervisor)
Abstract
A biocompatible ferrofluid containing ?Fe?_3 O_4 nanoparticles was produced using co precipitation of ?FeCl?_2.?4H?_(2 )O and ?FeCl?_3 ?6H?_2 O under ultrasonic irradiation power with NaOH being the alkaline. Two variables studied in this research were concentration and molecular weight of PEG, as the coating agent. The impact of these variables were carefully monitored on shape, size distribution and magnetic behavior of nanoparticles through SEM, DLS, XRD and VSM characterization techniques. Moreover, MRI relaxation times,T_1and T_2, were calculated using synthesized nanoparticles as contrast agents. Accordingly these nanoparticles were biologically evaluated by MTT assay. Results...