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Toplam kayıt 282, listelenen: 91-100
The radiation shielding properties of the low temperature alloys
(Afyon Kocatepe University, 2021)
Solder alloys are significant for many applications. In addition to the physical electrical and magnetic
properties of solders, it is of great importance to determine the shielding properties of the materials in
order ...
Hierarchical clustering of selected countries according to the variables of population, national income and exports of goods and services
(2021)
The changes in the population, gross domestic product (GDP) and exports of goods and services of the 32 countries
that we have selected for 25 years have annually been examined. In this study, we use hierarchical ...
Üçlü ters parabolik kuantum bariyer çift kuyu potansiyelinde enerji seviyeleri ile elektron geçişinin örgü parametreleri ve yoğun lazer alanına bağlılığının incelenmesi
(Marmara Üniversitesi, 2021)
Bu çalışmanın amacı, yoğun lazer alanı altında GaAs/AlGaAs lardan oluşan üçlü ters parabolik kuantum bariyer çift kuyu
potansiyelinde elektronik iletimi ve enerji seviyelerinin bariyer genişlikleri, lazer alanı giydirme ...
Improved performance of CdS powder-based hybrid solar cells through surface modification
(Gümüşhane Üniversitesi, 2021)
The effects of surface modification of CdS through organic Eosin-Y, indoline D205, and Ru-based complex N719 and
N3 dyes on CdS-based hybrid solar cells were studied. Chemical bath deposition (CBD) and doctor blade methods ...
Intersubband transitions in nonpolar ZnO/BeMgZnO quantum wells: effects of physical dimension, concentration and donor level
(Igdir University, 2022)
Polar ve semipolar yönlerde büyütülen BeMgZnO bariyer tabakaları üzerindeki ZnO kuyu
katmanlarının polarizasyon özellikleri araştırıldı. Gevşemiş ve gerilmiş bariyer katmanların durumları
göz önünde bulunduruldu. ...
On the 30th anniversary of the Chernobyl Nuclear Power Plant Accident, assessment of the activity concentrations and the radiological hazard parameters of soil samples collected from Rize province and districts
(Elsevier Ltd, 2021)
Uranium, thorium and potassium are the main terrestrial sources of radiation that are located at different levels in the soil depending on the geographical and geological conditions and contribute to increase of the natural ...
Assessment of metal concentrations (Cu, Zn, and Pb) in seawater, sediment and biota samples in the coastal area of Eastern Black Sea, Turkey
(Pergamon-Elsevier Science Ltd, 2017)
This study investigated the contents of Cu, Zn and Pb in seawater, sediment, different shell sizes of mussel (Mytilus galloprovinciaIis) and sea snail (Rapana venosa) samples collected from four different provinces of the ...
Improvement in levitation force performance of bulk MgB2 superconductors through coronene powder adding
(Elsevier Science Sa, 2017)
The effect of coronene (C24H12) addition on the levitation force properties of MgB2 superconductor has been investigated for the first time in this study. the polycrystalline disk-shaped MgB2 + y wt % C24H12 samples (y = ...
The investigation of magnetic levitation performances of single grain YBCO at different temperatures
(Elsevier Science Sa, 2017)
The temperature dependence of the magnetic levitation force has been investigated for single-grain YBCO bulk sample, 20 mm in diameter with a thickness of 8 mm, fabricated by top-seeded melt growth (TSMG) method using Nd123 ...
Determination of radioactivity levels and heavy metal concentrations in seawater, sediment and anchovy (Engraulis encrasicolus) from the Black Sea in Rize, Turkey
(Pergamon-Elsevier Science Ltd, 2017)
Seawater, sediment and fish (anchovy) samples consumed in the Rize province of the Eastern Black Sea region of Turkey were collected from five different stations. the radioactivity levels (Ra-226, Th-232. K-40 and Cs-137) ...