DSpace Home
→
Browsing by Subject

Browsing by Subject "Physics"

Now showing items 1-19 of 666

A Batch Adsorber Design for Rhodium Adsorption on Gallic Acid Formaldehyde Resin

Bulut, Emrah (POLISH ACAD SCIENCES INST PHYSICS, 2015)

The adsorption of rhodium (III) ions onto gallic acid formaldehyde resin in a batch adsorber has been studied. Adsorption experiments were carried out by agitating 1 g resin particles with 1000 ml of Rh (III) ion solution ...
A broad analysis of directly and indirectly ionizing radiation interaction parameters of PbF2-CaF2-Bi2O3-B2O3-Cr2O3 glass system

Alzahrani, Jamila S.; Alrowaili, Z. A.; Somaily, H. H.; Alsufyani, Sultan J.; Olarinoye, I. O.; Sriwunkum, Chahkrit; Ben Ahmed, Samia; Tonguc, B. T.; Al-Buriahi, M. S. (2022)

This study presents the shielding parameters for directly and indirectly ionization radiations of PCBBC glasses with the chemical composition: xPbF(2)-(25-x)CaF2-49.8B(2)O(3)-25Bi(2)O(3)-0.2Cr(2)O(3) and coded as PCBBC1-PCBBC4 ...
A Chaotic System with Infinite Equilibria and Its S-Box Constructing Application

Xiong Wang; Akif; Çavuşoğlu, Ünal (MDPI, 2018)

Systems with many equilibrium points have attracted considerable interest recently. A chaotic system with a line equilibrium has been studied in this work. The system has infinite equilibria and exhibits coexisting chaotic ...
A cobalt (II) complex with 6-methylpicolinate: Synthesis, characterization, second- and third-order nonlinear optical properties, and DFT calculations

Sumeyye Alturk; Avcı, Davut; Tamer, Ömer; Atalay, Yusuf; Onur Sahin (PERGAMON-ELSEVIER SCIENCE LTD, 2016)

A cobalt(II) complex of 6-methylpicolinic acid, [Co(6-Mepic)(2)(H2O)(2)]center dot 2H(2)O, was prepared and fully determined by single crystal X-ray crystal structure analysis as well as FT-IR, FT-Raman. UV-vis spectra ...
A comparative ab initio study of superconductivity in the body centered tetragonal YC2 and LaC2

Tütüncü, Hüseyin Murat; G. P. Srivastava (AMER INST PHYSICS, 2015)

Ab initio studies of the electronic band structure and phonon dispersion relations, using the planewave pseudopotential method and the density functional theory, have been made for the superconducting materials YC2 and ...
A comparative study of borided pure niobium, tungsten and chromium

Özbek, İbrahim; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2006)

Pure niobium (Nb), tungsten (W) and chromium (Cr) were boronized at 940 degrees C for 2, 4 and 8h. The borided samples were characterized by X-ray diffraction, Scanning electron microscope and microhardness tests. Tribological ...
A comparative study of surface phonons on CdTe(110) and InSb(110)

Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE BV, 2001)

We have studied the lattice dynamics of the CdTe(110) and InSb(110) surfaces by using the adiabatic bond-charge model. The atomic geometry and electronic informations for the phonon calculations have been obtained by using ...
A heterocyclic compound 5-acetyl-2,4-dimethylthiazole, spectroscopic, natural bond orbital, nonlinear optical and molecular docking studies

Avcı, Davut; B. Dede; S. Bahceli; D. Varkal (SOC MEXICANA FISICA, 2019)

In this work, the 5-acetyl-2,4-dimethylthiazole (C7H9NSO) molecule was studied by using the experimental UV-vis (in three different solvents) and FT-IR spectral results, and theoretically using DFT calculation method. The ...
A mechanical aspect of borides formed on the AISI 440C stainless-steel

Özbek, İbrahim; Şen, Şaduman; İpek, Mediha; Bindal, Cuma; Zeytin, Sakin (PERGAMON-ELSEVIER SCIENCE LTD, 2004)

In the present study, some properties of borides formed on AISI 440C stainless-steel have been investigated. Boronizing was carried out in a solid medium consisting of EKabor(R) powder at a temperature of 950degreesC for ...
A method to predict effective case depth in ion nitrided steels

Genel, Kenan (ELSEVIER SCIENCE SA, 2005)

Ion nitriding is one of the most promising thermochemical surface treatments to improve surface properties such as wear and corrosion resistance and fatigue strength. The prediction of effective case depth before nitriding ...
A new 4-D chaotic hyperjerk system, its synchronization, circuit design and applications in RNG, image encryption and chaos-based steganography

S. Vaidyanathan; Akgül, Akif; Kaçar, Sezgin; Çavuşoğlu, Ünal (SPRINGER HEIDELBERG, 2018)

Hyperjerk systems have received significant interest in the literature because of their simple structure and complex dynamical properties. This work presents a new chaotic hyperjerk system having two exponential nonlinearities. ...
A new approach to representations of homothetic motions in Lorentz space

Unal, Dogan; Gungor, Mehmet Ali; Tosun, Murat (2022)

In this study, Rodrigues parameters have been first calculated for a homothetic rotation around spacelike and timelike axis using one parameter homothetic motions in Lorentz 3 -space E-1(3). The behavior of the vectors ...
A New Chaotic System with Multiple Attractors: Dynamic Analysis, Circuit Realization and S-Box Design

Qiang Lai; Akif Akgul; Chunbiao Li; Guanghui Xu; Çavuşoğlu, Ünal (MDPI AG, 2018)

This paper reports about a novel three-dimensional chaotic system with three nonlinearities. The system has one stable equilibrium, two stable equilibria and one saddle node, two saddle foci and one saddle node for different ...
A New Generalization of the Steiner Formula and the Holditch Theorem

Tulay Erisir; Güngör, Mehmet Ali; Tosun, Murat (SPRINGER BASEL AG, 2016)

In this study, we first obtained the Steiner area formula in the generalized complex plane. Then, with the aid of this formula, we determined a new approach for the Holditch theorem giving the relationship between the areas ...
A Note on Evolution of Curves in the Minkowski Spaces

Onder Gokmen Yildiz; Tosun, Murat (SPRINGER BASEL AG, 2017)

In this paper, we study the evolution of non-null curve in n-dimensional Minkowski Space. We express evolution equation of the Frenet frame by matrix equation. We obtain integrability conditions for the evolutions. Finally, ...
A novel approach for wear and corrosion resistance in the electroless Ni-P-W alloy with CNFs co-depositions

A. Akyol; Algül, Hasan; Uysal, Mehmet; Akbulut, Hatem; Alp, Ahmet (ELSEVIER SCIENCE BV, 2018)

Electroless nickel-based depositions have been considered as one of the industrially effective methods because of their deposition uniformity, good corrosion properties, high wear resistance and good electrical properties. ...
A novel approach for wear and corrosion resistance in the electroless Ni-P-W alloy with CNFs co-depositions

A. Akyol; Algül, Hasan; Uysal, Mehmet; Akbulut, Hatem; Alp, Ahmet (ELSEVIER SCIENCE BV, 2018)

Electroless nickel-based depositions have been considered as one of the industrially effective methods because of their deposition uniformity, good corrosion properties, high wear resistance and good electrical properties. ...
A Review of MPPT Algorithms for Partial Shading Conditions

Erdem, Zekiye (POLISH ACAD SCIENCES INST PHYSICS, 2017)

Maximum power point tracker in a photovoltaic system allows to maximize the energy drawn from the connected photovoltaic modules. In the partial shade conditions there can be more than one maximum point in photovoltaic ...
A Serendipity-Oriented Personalized Trip Recommendation Model

Abbas, Rizwan; Hassan, Ghassan Muslim; Al-Razgan, Muna; Zhang, Mingwei; Amran, Gehad Abdullah; Al Bakhrani, Ali Ahmed; Alfakih, Taha; Al-Sanabani, Hussein; Rahman, Sk Md Mizanur (MDPI, 2022)

Personalized trip recommendation attempts to recommend a sequence of Points of Interest (POIs) to a user. Compared with a single POI recommendation, the POIs sequence recommendation is challenging. There are only a couple ...