Dvelopment, design and realizaiton of an electrocardiogram data transmission equipment over dial-up telephone network.

Aygün, İlhami


Dvelopment design and realizaiton of an ECG test unit.
Kıymık, M Kemal; Department of Electrical Engineering (1986)
DFT study for the mechanical and electronic properties of Mg3BHx (x=l,4,7) compounds for hydrogen storage applications
Gencer, A.; Sürücü, Gökhan (2019-11-25)
© 2019 Author(s).The electronic devices such as cell phones, laptops etc. are a necessary part of our daily life that requires portable power sources. Hydrogen being the most abundant element on the Earth, is an excellent energy carrier with high energy capacity that enable to use hydrogen storage methods in portable power sources. In addition, hydrogen storage could be essential to store the energy obtained from the renewable energy sources. The solid state hydrogen storage is an encouraging method for hyd...
DFT investigation of high temperature water gas shift reaction on chromium-iron mixed oxide catalyst
Yalcin, Ozgen; Önal, Işık (2014-11-20)
As part of high temperature water gas shift reaction mechanism, CO adsorption and H2O adsorption on Fe3O4 (111) and chromium atom substituted Fe3O4 (111) slab surfaces are investigated by means of periodic DFT approach using VASP. Fe3O4 bulk structure has been computed including the Hubbard (U) parameter. One oxygen site (Ooct1) is studied as a probable site among the six Fe3O4 (111) terminations. Cr atom substitution on this surface is also examined. Cr atoms prefer being on the surface rather than in the ...
DFT Study on the Hydrogenation of CO2 to Methanol on Ho-Doped Cu(211) Surface
Tezsevin, Ilker; Senkan, Selim; Önal, Işık; Duzenli, Derya (2020-10-01)
The catalytic conversion of carbon dioxide (CO2) into methanol, a valuable chemical product, has been investigated theoretically on a novel holmium (Ho)-doped Cu(211) surface by density functional theory (DFT) calculations. The possible key intermediates formed during the hydrogenation of CO2 and as well as their further hydrogenated species during the production of methanol are examined thermodynamically and kinetically by computational means. It is found that the adhesion of a Ho atom on the Cu(211) surfa...
DFT study of Rb/Si(100)-2 x 1 system
Mete, E; Shaltaf, R; Ellialtıoğlu, Süleyman Şinasi (Elsevier BV, 2005-06-01)
We have investigated Rb adsorption on the Si(100) surface for 0.5 and 1 monolayer coverages using the total energy method with norm-conserving pseudopotentials. For 2 x 1 reconstruction at 1 ML coverage symmetrized dimers are found to be energetically more favorable. On the other hand, half a ML coverage is found to have symmetrical dimers only for the most stable adsorption model. All possible surface-adatom configurations have been considered in the calculations to find which adsorption sites are energeti...
Citation Formats
İ. Aygün, “Dvelopment, design and realizaiton of an electrocardiogram data transmission equipment over dial-up telephone network.,” Middle East Technical University, 1985.