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Now showing 1 - 10 of 47
  • Article
    Citation - Scopus: 1
    An Investigation on the Dna Binding Activities of Melamine, Cyanuric Acid and Uric Acid
    (Editura Acad Romane, 2021) Senol, Ali; Devrim, Alparslan Kadir; Sudagidan, Mert; Ozalp, Veli Cengiz
    Melamine can be added to various foods such as milk, milk powder, baby food, pet, and livestock feed for cheating purposes due to its high nitrogen content. Regarding its usage in food products, there is a need to investigate its possible interactions with DNA. Thus, this study aimed to investigate the interactions of melamine and its metabolized products, cyanuric acid and uric acid with genomic DNA, isolated from eukaryotic (calf thymus) and prokaryotic (Staphylococcus aureus) sources. UV-absorbance spectrophotometry, fluorescence spectrophotometry, and agarose gel electrophoresis techniques were used to evaluate these interactions. The five different concentrations of melamine, cyanuric acid, and uric acid were incubated with fixed DNA concentration and it was determined that the test compounds interacted with the DNA molecules. The data obtained by UV-absorbance and fluorescence spectrophotometry techniques revealed an increase in wave peaks observed with the increasing substance concentration. After the obtained data of the aforementioned techniques were evaluated together, it was concluded that melamine, cyanuric acid, and uric acid bonded to the eukaryotic and prokaryotic genomic DNA materials via groove binding.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Photovoltaic Effect and Space Charge Limited Current Analysis in Tlgate2 Crystals
    (Polish Acad Sciences inst Physics, 2012) Qasrawi, A. F.; Yaseen, T. R.; Eghbariy, B.; Gasanly, N. M.
    Anisotropic space charge limited current density analysis and photovoltaic effect in TlGaTe2 single crystals has been investigated. It is shown that, above 330 K, the crystal exhibits intrinsic and extrinsic type of conductivity along (c-axis) and perpendicular (a-axis) to the crystal's axis, respectively. The current density (J) is found to be space charge limited. It is proportional to the square and three halves power of voltage (V) along the a- and c-axis, respectively. Along the a-axis and at sufficiently low electric field values, the activation energy of the current density is found to depend on the one half power of electric field. At high electric fields, the activation energy is field invariant. This behavior is found to be due to the Pool Frenkel effect and due to a trap set located at 0.26 eV, respectively. Along the c-axis the crystal is observed to operate under the Child Langmuir space charge limited regime. TlGaTe2 crystals are found to exhibit photovoltaic properties. The open circuit photovoltage is recorded as a function of illumination intensity at room temperature.
  • Article
    Citation - Scopus: 8
    Computation of a Tunable Slot-Loaded Equilateral Triangular Microstrip Antenna
    (2009) Aydın,E.
    In this paper, a simple closed form expression is developed to accurately estimate the lower and upper operating frequencies of a single feed slot loaded triangular patch (SLTP) with variations of the bent slot lengths. It is obtained by using cavity model analysis and useful to antenna engineers for accurately predicting both operating resonant frequencies of the SLTP. The theory is compared with the experimental results available in the literature, and excellent agreement is observed. The proposed computation is also extended to the analysis of tunability of the SLTP as a function of the air-gap height. © Journal of electromagnetic waves and applications. All Rights reserved.
  • Editorial
    Citation - WoS: 3
    The Effects of Video-Feedback Intervention To Promote Positive Parenting and Sensitive Discipline for Maternal Sensitivity in Turkey
    (Turkish Psychologists Assoc, 2020) Sumer, Nebi; Metin-Orta, Irem; Alsancak-Akbulut, Cansu; Salman-Engin, Selin; Ilden-Kockar, Aylin; Sahin-Acar, Basak; Yasar, Buket
    [No Abstract Available]
  • Correction
    Influence of Water/O2 Plasma Treatment on Cellular Responses of Pcl and Pet Surfaces (vol 21, Pg 123, 2011)
    (Ios Press, 2011) Sasmazel, Hilal Turkoglu; Aday, Sezin; Manolache, Sorin; Gumusderelioglu, Menemse
    [No Abstract Available]
  • Article
    Citation - WoS: 6
    Citation - Scopus: 6
    Low-Temperature Thermo Luminescence Studies on Tlins2 Layered Single Crystals
    (Polish Acad Sciences inst Physics, 2014) Isik, M.; Delice, S.; Gasanly, N. M.
    Thermoluminescence characteristics of TlInS2 layered single crystals grown by the Bridgman method were investigated in the low temperature range of 10-300 K. The illuminated sample with blue light (approximate to 470 nm) at 10 K was heated at constant heating rate. Curve fitting, initial rise and various heating rate methods were used to determine the activation energy of the trap levels. All applied methods showed good consistency about the presence of five trapping centers located at 14, 19, 350, 420, and 520 meV. Behavior of the TL curve for various heating rates was investigated. Traps distribution has also been studied. The activation energies of the distributed trapping centers were found to be increasing from 14 to 46 meV.
  • Editorial
    Does "who Says What Regarding the Expropriation of Sur" Has an Influence on the Evaluation of the Message and Collective Guilt?
    (Turkish Psychologists Assoc, 2020) Korkmaz, Leman; Tasman, Dicle Rojda
    [No Abstract Available]
  • Article
    Citation - WoS: 2
    Citation - Scopus: 1
    Cerebellar Developmental Venous Anomaly Causing Tinnitus and Hemifacial Spasm: a Case Report
    (Sage Publications inc, 2022) Ogul, Hayri; Unlu, Elif Nisa; Guclu, Derya; Koksal, Ali
    [No Abstract Available]
  • Article
    Citation - WoS: 17
    Citation - Scopus: 22
    A Two-Stage Solution Approach for the Large-Scale Home Healthcare Routeing and Scheduling Problem
    (Southern African inst industrial Engineering, 2017) Erdem, M.; Bulkan, S.
    The purpose of this study is to introduce a two-stage solution approach for a large-scale home healthcare routeing and scheduling problem (HHCRSP). In the first part of the two-stage solution approach, a cluster-assign algorithm is employed, based on the home location and the time to obtain feasible clusters. In the second stage, using these clusters, route construction heuristics start to create schedules and routes, taking the side constraints of the model into consideration. Using the novelty of this two-stage solution approach, higher diversification is achieved with a series of newly-developed cross movement strategies. The computational results show that our solution approach offers certain advantages, such as an increase in the efficient use of human resources, and a decrease in the working time of nurses.
  • Editorial
    Photo Quiz; Anthrax or Orf?
    (Doc design informatics Co Ltd, 2019) Tulek, Necla; Kilic, Esra Kaya; Ertem, GunayTuncer; Yuksekkaya, Esra
    [No Abstract Available]