Fen Bilimleri Enstitüsü: Recent submissions

  • The use of different statistical tools in the identification of perturbation-responsive transcription factors in yeast 
    Çınar, Nil. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    S. cerevisiae transcription data, obtained under environmental perturbations, such as 16 different macronutrient (carbon, nitrogen, phosphorus and sulfur) limitation regimes in both aerobic and anaerobic conditions, and ...
  • Determination of protein-protein binding sites using machine learning tools 
    Sümbül, Fidan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Protein-protein interactions are involved in almost all biological processes. Thus, the understanding of the principles underlying these interactions is of great significance. This is mainly to identify the functional sites ...
  • Adaptive Clarke-Gawthrop self-tuning control of blood glucose concentration in patients with Type I diabetes 
    Çölmekçi, Ceylan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Adaptive Clarke-Gawthrop type of self-tuning controller is used for regulating the blood glucose concentration in Type I diabetic patients. This control algorithm is proposed to be integrated into the automation pumps used ...
  • Protein by micro-organisms 
    Özgen, Cenk. (Thesis (M.S.) - Robert College. Faculty of Graduate School of Engineering, 199., 1969.)
  • Interaction between CO and PtSn alloy: a theoretical study on understanding selective CO oxidation 
    Duru, Birim. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The adsorption properties of CO on PtSn(110) surface were investigated via quantum mechanical calculations. The adsorption energies and the geometries of CO molecule for all possible adsorption sites were calculated. The ...
  • Comparison of the performances of different catalytic reactor types for the water-gas shift reaction using computer simulations 
    İlhan, Nilüfer. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The low temperature water-gas shift reaction is mathematically modeled for packedbed and monolith reactors by applying mass, energy and momentum balances at steadystate. One-dimensional pseudo-homogeneous and heterogeneous ...
  • In silico determination of protein complexes in yeast 
    Karabıyık, Hilal Candan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this thesis, the protein complexes in an interaction network of 20,487 interactions between 4,944 proteins were determined by the integration of different biological datasets. We recruit different data sources that ...
  • Dynamic analysis of sumo conjugation cascade by molecular modeling and simulations 
    Karaca, Ezgi. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Ubiquitin (Ub) and ubiquitin like modifiers (Ubls) are proteins, which facilitate post-translational modification (PTM) of proteins. A PTM involves Ub/Ubl conjugation on to a specific target. In order to modify targets, ...
  • Thermodynamic analysis of steam assisted conversion of bio oil components to synthesis gas 
    Aktaş, Seda. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Steam reforming is a well-established route for hydrogen production, but the processing of fossil-based hydrocarbons leads to the generation of carbon dioxide, a well-known greenhouse gas. Recently, the use of biomass-driven ...
  • Exergy analysis of combined fuel processor-fuel cell system 
    Şeyban, Cüneyt. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Exergy analysis and energy efficiency of a combined fuel processor-fuel cell system was performed. Experimental data were used for the performances of the ATR, WGS and PROX catalytic reactors assuming that the concentrations ...
  • Preferential oxidation performance of Pt-Sn/AC catalysts 
    Soykal, İbrahim Ilgaz. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Preferential low temperature CO oxidation was studied to find out the effect of H2O, CO2, CH4 and O2 to CO ratio in the feed stream. Moreover the effect of temperature is also studied on 1% Pt-0.25%Sn/AC. ...
  • Construction and testing of a low-temperature water-gas shift reaction system 
    Şen, Özlem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The objective of this study was to construct and test of a low-temperature water-gas shift reaction system. A system consisting of mass flow controllers for gases, HPLC pump for water, an evaporation and gas-mixing section, ...
  • Collective dynamics and conformational sampling of triosephosphate isomerase 
    Cansu, Sertan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Molecular dynamics simulations (30-60 ns runs) are performed on free/apo triosephosphate isomerase (TIM) to determine any correlation between collective motions and loop 6 dynamics. Native TIM is active only as a homo-dimer ...
  • Kinetics of low temperature co oxidation over activated carbon supported Pt-SnOx catalysts 
    Acun, Seda. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    This experimental study comprises a kinetic study of low-temperature CO oxidation both in the absence and presence of H2 over air-oxidized activated carbon supported 1wt.%Pt-0.25wt.%SnOx catalyst prepared by the sequential ...
  • Production of citric acid from Turkish molasses by fermentation 
    Mutluay, Işın. (Thesis (M.S.) - Robert College. Faculty of Graduate School of Engineering, 1969., 1969.)
  • Modeling of selective CO oxidation over CuOx-CoOx-CeO2 catalysts using artificial neural networks 
    Kantar, Ufuk. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    This study is aimed to model design and reaction parameters of CO oxidation over CuOx-CoOx-CeO2 catalyst using neural and modular neural networks. Since there are many possible architectures for modular networks, the best ...
  • Structure and dynamics of catabolite gene activator protein by molecular modeling and simulations 
    Fas, Ayşe Burcu Aykaç. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The activities of proteins are regulated by interactions with other molecules through various types of local to global motions. Such internal motions may occur at different time scales and involve complex correlations ...
  • Structure-function relationships of type II restriction endonucleases 
    Uyar, Arzu. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Restriction endonucleases (REs) constitute an enzyme family, which can recognize and cleave specific foreign DNA sequences to protect prokaryotic cells. The vibrational dynamics of Type II REs are investigated by elastic ...
  • Sphingolipidomics: qualification and quantification of sphingolipids in yeast 
    Yücel, Esra Börklü. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    BY4743 parent strain and three homozygous deletion mutants, ino1D/ino1D, slc1D/slc1D and ser2D/ser2D, along with four heterozygous deletion mutants INO1/ino1D, SLC1/slc1D, LCB1/lcb1D, and LCB2/lcb2D of S. cerevisiae are ...
  • Studies on the role of HAP4, MIG1 and MIG2 in transcriptional control network of Saccharomyces Cerevisiae 
    Dereli, Elif. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this study, transcriptional responses of HAP4, MIG1, MIG2 and GSM genes to transient perturbations under glucose and nitrogen limited conditions were investigated in order to understand glucose sensing and signaling ...