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speciation
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The Species Problem, Answers and Philosophical Considerations of Human Nature
, M.Sc. Thesis Sharif University of Technology ; Azadeghan, Ebrahim (Supervisor)
Abstract
One of the most important philosophical issues in biology that continues to receive attention is the issue of species. Since ancient times, the classification of living organisms and the definition of species as its foundation have been of great importance to thinkers and knowledge seekers. In this research, while addressing various perspectives, this subject is still being examined today. This research has been divided into two main sections. The first section includes the definition of the problem and various perspectives on it. The main perspective focuses on the influence of genetics in strengthening or weakening it, while the secondary perspective, although interesting, is seen as a...
Design of Colorimetric Sensor Arrays Based on Gold Nanorods for Speciation and Discrimination of Biomolecules and Environmental Pollutants
, Ph.D. Dissertation Sharif University of Technology ; Hormozinezhad, Mohammad Reza (Supervisor) ; Ghasemi, Forough (Co-Supervisor)
Abstract
The vivid optical properties of gold nanorods (AuNRs) arising from their unique structural anisotropy have been an object of fascination in a broad range of applications over the past decade. The pseudo-one-dimensional rod-shaped morphology of AuNRs underlies two distinct LSPR bands attributed to the longitudinal and the transversal oscillation of the surface plasmons. Indeed, the brilliant and high-contrast rainbow color tonality of AuNRs primarily emanates from the dramatic dependency of the location of the aforementioned bands on the aspect ratio of the nanorods. It is so profound that a minute increment of the aspect ratio is followed by a significant redshift of the longitudinal peak...