Güncel Gönderiler: Fizik Bölümü / Department of Physics
Toplam kayıt 168, listelenen: 21-40
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Determination of pre-gelation and post-gelation activation energies during free radical crosslinking copolymerization
(Taylor & Francis Ltd, 2005)Steady-state fluorescence (SSF) and dilatoraetric techniques were used to study the free-radical crosslinking copolymerization (FCC) of styrene (S) and divinylbenzene (DVB) in bulk. The gel points (t g) were recorded by ... -
Dissolution of Al2O3-polystyrene latex composites: A fluorescence study
(Taylor & Francis Ltd, 2005)This work reports the use of the steady state fluorescence (SSF) technique to study dissolution of a composite film formed from a mixture of Al 2O3 and polystyrene (PS) latex particles. The composite films were cast from ... -
Reversible film formation from PS doped PNIPAM particles in various compositions
(John Wiley & Sons Inc, 2008-02)Film formation from polystyrene (PS) doped poly(N-isopropylacrylamide) (PNIPAM) particles was studied using photon transmission technique. The transmitted light intensity, Itr, was monitored during film formation process. ... -
Comparision of critical parameters of polymerization and gelation processes: A fast transient fluorescence study
(World Scientific Publ Co Pte Ltd, 2005-03-10)The fast transient fluorescence technique was used to study free-radical polymerization and crosslinking copolymerization of styrene. Ethylene glycol dimethacrylate and Pyrene were used as crosslinking agent and fluorescence ... -
Critical behavior of thermal phase transitions of iota-carrageenan in CaCl2 solution
(Elsevier B.V., 2006-07-15)In situ photon transmission method was applied to study thermal phase transitions of ?-carrageenan in CaCl2 solution. Coil-to-helix (c-h) and helix-to-dimer (h-d) transitions were detected upon cooling. An extra dimer-to-dimer ... -
New quartz technique for OSL dating of limestones
(2010)The equivalent dose De determination of limestone-made ancient constructions by thermoluminescence (TL) prevents accurate measurements and requires plateau test of bleached curves. Optical stimulated luminescence (OSL) of ... -
Technical climate change adaptation options of the major ski resorts in Bulgaria
(Springer International Publishing, 2016-01-01)Climate change has been and increasingly will be a major threat to the ski tourism industry, whose survival is highly dependent on the existence of snow cover of sufficient depth and duration. For this matter, it is even ... -
Structure and expression analyses of the Fertilization Independent Seed (FIS) gene orthologs of the apomict Boechera species
(Society for Biology and Biotechnology, 2015)In this study Arabidopsis thaliana Fertilization Independent Seed 2 (FIS2) and Fertilization Independent Endosperm (FIE) genes orthologs were analysed in pseudogamous apomict and sexual Boechera species. FIS genes encode ... -
Akdağ Kütlesi’nde (Batı Toroslar) Pleistosen buzullaşmalarının jeomorfolojik özellikleri ve optik uyarmalı lüminesans (OSL) ile yaşlandırılması
(Türk Coğrafya Kurumu, 2017)Batı Torosların en yüksek ikinci zirvesine (Uyluk T. 3014 m) sahip olan Akdağ, batıda Eşen Ovası (60 m) doğuda Elmalı Ovası (1100 m) arasında yer alan ve 2700 m üzerinde birçok zirve barındıran, çevresine göre oldukça ... -
Optically stimulated luminescence to date coastel dunes and a possible tsunami layer on the Kavak Delta (Saros Gulf, NW Turkey)
(Scientific Technical Research Council Turkey-Tubitak, 2009-01-21)Optically stimulated luminescence (OSL) dating was used to determine the timing of initial dune formation and reconstruct the evolution of coastal dunes that developed on the Kavak Delta, Saros Gulf, Turkey. Along a 500-mlong ... -
Kütahya fay zonu’nun Holosen aktivitesi
(TMMOB Jeoloji Mühendisleri Odası, 2012-01)Batı Anadolu Açılma Bölgesi’nin kuzeydoğu sınırında bulunan Kütahya Havzası BKB-DGD doğrultusunda uzanan bir çöküntü alanıdır ve güney kenarı belirgin bir morfoloji ile Kütahya Fay Zonu tarafından sınırlanmaktadır. Kütahya ... -
A phase diagram near the NAC point in liquid crystals
(Elsevier Science SA, 2002-07-28)In this study using a mean field model we obtain the phase line equations for the NA. NC and AC transitions near the NAC point in a mixture of liquid crystals. We then fit these phase line equations to the experimental ... -
Yeşilırmak taraçalarında (Orta Kuzey Anadolu) geç pleyistosen iklim değişiklikleri ve düşey yönlü deformasyona akarsu cevabının araştırılması
(TMMOB Jeoloji Mühendisleri Odası, 2017)Fosilleşmiş taşkın ovası çökelleri olarak da tanımlanan akarsu taraça basamaklanması, akarsuların gelişim süreci üzerindeki iklim, kaide seviyesi ve genç tektonik etkinin analitik olarak belirlenmesi için önemli kayıtlar ... -
Tectonic and climatic controls on Quaternary fluvial processes and river terrace formation in a Mediterranean setting, the Goksu River, southern Turkey
(Cambridge University Press, 2019-03)Climate and tectonics effect the fluvial evolution of the Mediterranean Mut basin. The basin contains a river terrace staircase of 16 levels (T16-T1) ranging from 365 to 10m above the current Goksu River in its middle and ... -
Quaternary uplift of the northern margin of the Central Anatolian Plateau: New OSL dates of fluvial and delta-terrace deposits of the Kizilirmak River, Black Sea coast, Turkey
(Pergamon-Elsevier Science Ltd, 2018-12-01)We analysed the interplay between coastal uplift, sea level change in the Black Sea, and incision of the Kizilirmak River in northern Turkey. These processes have created multiple co-genetic fluvial and marine terrace ... -
Future projections of temperature and precipitation climatology for CORDEX-MENA domain using RegCM4.4
(Elsevier Science Inc, 2018-07-01)In this study, we investigate changes in seasonal temperature and precipitation climatology of CORDEX Middle East and North Africa (MENA) region for three periods of 2010-2040, 2040-2070 and 2070-2100 with respect to the ... -
Particle size and shell thickness dependence of the light intensity enhancement in the cap layers of Ag, Au, Al and SiO2@TiO2 core-shell nanostructures
(Wiley-V C H Verlag GMBH, 2018-03-22)We present a systematic study of the light intensity enhancement in the shell layers of half burrried Ag, Au, Al and SiO2 spherical nanoparticles capped with TiO2. We calculated the light intensity profiles near these ... -
Eolianite and coquinite as evidence of MIS 6 and 5, NW Black Sea coast, Turkey
(Elsevier B.V., 2017-04)This paper discusses the implications of a lowstand carbonate eolianite and overlying transgressive sequence of coquinite at Şile on the Turkish Black Sea coast based on composition, depositional characteristics and optical ... -
A realistic quantum capacitance model for quantum Hall edge state based Fabry-Pérot interferometers
(Institute of Physics Publishing, 2017-01-25)In this work, the classical and the quantum capacitances are calculated for a Fabry-Pérot interferometer operating in the integer quantized Hall regime. We first consider a rotationally symmetric electrostatic confinement ... -
Projected changes in temperature and precipitation climatology of Central Asia CORDEX Region 8 by using RegCM4.3.5
(Elsevier Ltd, 2017-01-01)This work investigated projected future changes in seasonal mean air temperature (°C) and precipitation (mm/day) climatology for the three periods of 2011–2040, 2041–2070, and 2071–2100, with respect to the control period ...