Some synthetic routes for amino acid synthesis and new precursors for preparing organic conducting materials

Saygılı (İbrahimzade), Nezire


An Exploratory study on default mode network's time course analysis
Akın, Burak; Gökçay, Didem; Department of Biomedical Engineering (2012)
At resting state, some parts of the human brain is more active than the other areas. Furthermore, the resting state activity in these areas exhibit a sudden decrease when the same areas are recruited in a task. Default mode network (DMN) is one of the resting state networks in the human brain, revealed through functional magnetic resonance (fMR) data acquisition while the subject is in an idle state. The aim of this study is to examine time-course properties of resting state default-mode network by using in...
The Preparation of azido amino acids and the application of native chemical ligation in the synthesis of chlorotoxin
Karaca, Ulvi Oral; Özçubukçu, Salih; Department of Chemistry (2014)
In this project, the pharmaceutically and biologically important peptide, chlorotoxin (CLTX), and some derivatives of CLTX containing azido amino acids was synthesized by using solid phase peptide synthesis (SPPS) based on 9-fluorenylmethyloxycarbonyl (Fmoc) chemistry strategy and native chemical ligation. The native chemical ligation provides more efficient than only SPPS. Directly synthesis of CLTX by SPPS has very low yield, by using native chemical ligation, the yield is aimed much higher. The CLTX can ...
Synthesis and catalytical activity of new chiral 2-substituted pyrrole derivatives of alpha-amino acids and beta-amino alcohols
Gerçek Arkın, Zuhal; Demir, Ayhan Sıtkı; Department of Chemistry (2000)
Analysis of koch fractal antennas
İrgin, Ümit; Birand, Mehmet Tuncay; Department of Electrical and Electronics Engineering (2009)
Fractal is a recursively-generated object describing a family of complex shapes that possess an inherent self-similarity in their geometrical structure. When used in antenna engineering, fractal geometries provide multi-band characteristics and lowering resonance frequencies by enhancing the space filling property. Moreover, utilizing fractal arrays, controlling side lobe-levels and radiation patterns can be realized. In this thesis, the performance of Koch curve as antenna is investigated. Since fractals a...
Use of SRR Based Super-Cells to Obtain Multiple Resonances and Broader Frequency Bands with Negative Effective Permeability
Ekmekci, Evren; Sayan, Gönül (2010-07-17)
In this study, we have demonstrated the use of split-ring resonator (SRR) based super-cell structures to obtain broader μ-negative (MNG) bandwidths. For our design parameters, while the array of single SRR unitcell (with g=0.2 mm) is providing a MNG bandwidth of 1 GHz, the arrays of super-cells with two, three and four SRRs provide MNG bandwidths of 1.27 GHz (27 percent increase), 1.40 GHz (40 percent increase) and 1.42 GHz (42 percent increase), respectively.
Citation Formats
N. Saygılı (İbrahimzade), “Some synthetic routes for amino acid synthesis and new precursors for preparing organic conducting materials,” Ph.D. - Doctoral Program, Middle East Technical University, 1999.