Güncel Gönderiler: Fen Edebiyat Fakültesi
Toplam kayıt 1639, listelenen: 281-300
-
Regioselective syntheses of 2-oxopyridine carbonitrile derivatives and evaluation for antihyperglycemic and antioxidant potential
(Elsevier, 2023)A library of 2-oxopyridine carbonitriles 1-34 was synthesized by regioselective nucleophilic substitution reactions. In the first step, a one-pot multicomponent reaction yield pyridone intermediates. The resulting pyridone ... -
Phylogenetic analysis based on the ITS, matK and rbcL DNA barcodes and comparison of chemical contents of twelve Paeonia taxa in Turkiye
(Springer, 2023)BackgroudTwelve taxa of herbaceous Paeonia species were recorded in Turkiye. All definitions were performed morphologically and/or anatomically and there is no study based on DNA barcode sequences. Three barcode regions ... -
Dihydroisocoumarins and phenylglycosides from scorzonera longiana, their antimicrobial activities and molecular docking studies
(Wiley, 2023)Five new phenyl dihydroisocoumarin glycosides (1-5) and two known compounds (6-7) were identified from the butanol fraction of Scorzonera longiana. The structures of 1-7 were elucidated based on spectroscopic methods. ... -
Thermal conductivity and phase-change properties of boron nitride-lead oxide nanoparticle-doped polymer nanocomposites
(MDPI, 2023)Thermally conductive phase-change materials (PCMs) were produced using the crosslinked Poly (Styrene-block-Ethylene Glycol Di MethylMethacrylate) (PS-PEG DM) copolymer by employing boron nitride (BN)/lead oxide (PbO) ... -
Facile synthesis and characterization of CdS thin films doped by yttrium atoms
(Springer, 2023)A facile preparation and structural, optical and electrical characterization of undoped and Y-doped CdS thin films are demonstrated through spray pyrolysis changing doping concentration of yttrium atoms in CdS structure. ... -
CdSe thin films-based photodetector doped with Cu, In and Ga atoms: a comparative work
(Springer, 2023)The present work demonstrates a comparison of performance of Cu, In and Ga-doped CdSe thin films-based photodetectors. Structural, morphological, optical and electrical investigation of Cu, In and Ga-doped CdSe thin films ... -
The effect of nano-Pt/nano-SiC co-additions on superconducting properties of bulk MgB2
(Springer, 2023)This research presents a detailed analysis and discussion of the crystallographic, flux pinning mechanism, the microstructure and superconducting properties of nano-Pt/nano-SiC co-added (in different addition levels) bulk ... -
New pyrimidine-N-β-D-glucosides: synthesis, biological evaluation, and molecular docking investigations
(Scientific Technical Research Council Turkey, TÜBİTAK, 2023)In this study, syntheses of new pyrimidine-coupled N-beta-glucosides and tetra-O-acetyl derivatives were carried out. All glycoconjugates were investigated in comparison with known chemotherapeutic agents in terms of their ... -
An evaluation of the chemical composition and biological properties of Anatolian Royal Jelly, drone brood and queen bee larvae
(Springer, 2023)Therapeutic properties of products such as propolis, pollen and bee venom have been investigated before, but studies about the biological properties of drone brood (DBL) and queen bee larvae (QBL) are very limited. In ... -
Chalcone-based dipolar cycloaddition of novel heteroaromatic compounds: Their anticancer examination
(Elsevier, 2023)In this study, new chalcone-isoxazole-based hybrid derivatives (12, 13, 18, and 21) and chalcone-triazole hybrid molecules (26) were synthesized using the click chemistry approach. Among these hybrid molecules, 12, 13, 21, ... -
Comparing the biological properties and chemical profiling of chestnut bee pollen and bee bread collected from Anatolia
(Springer, 2023)Bee bread (BB) and bee pollen (BP) are accepted as functional food and considered in medical properties due to its important bioactive components. These bee products show different biological properties, but researches on ... -
Performance of Si-based solar cell utilizing optimized Al-doped ZnO films as TCO layer
(Springer, 2023)luminum-doped zinc oxide (AZO) is one of the most popular transparent conducting oxide layers that can be employed in many optoelectronic applications in particular in photovoltaic devices due to being a low-cost and ... -
Influence of deposition pressure of elemental Sn on structural, optical, electrical and schottky diode properties of SnS thin films grown by two-stage method
(Springer, 2023)In the present study, SnS thin films were grown by two-stage method including sputtering deposition of elemental Sn films at various deposition pressures (6, 9, 12 ,15 and 18 mTorr) followed by sulfurization process carried ... -
PCR-based detection of the honeybee tracheal mite (Acarapis woodi) in Turkiye
(Springer, 2023)Acarapis woodi (Rennie 1921) (Acari: Tarsonemidae) is one of the mites that settles in the respiratory system of honeybees (Apis mellifera L. (Hymenoptera, Apidae)) and distributed throughout the world. It causes significant ... -
Characterization of Cu(In,Ga)(Te,S)(2) thin films grown on stainless steel foil substratesIo
(IOP Publishing, 2023)In this study, Cu(In,Ga)(Te,S)(2) (CIGTS) thin films with [Ga]/([In] +/- [Ga]) atomic ratios in the ranges of 0.22-0.28 and 0.50-0.67 were fabricated using a two-stage technique. During the first stage of the technique, ... -
Development of a new and facile carrier element-free coprecipitation procedure for separation, preconcentration and sensitive determination of Cu(II) and Cd(II) Ions in water and vegetable samples
(Taylor & Francis Ltd., 2023)A facile and sensitive method predicated on carrier element free coprecipitation (CEFC) using 2-(2-(2-(4-bromobenzyl)-1H-benzo[d]imidazole-1-yl)acetyl)-N-ethylhydrazine-1-carbothioamide (BIMANEC) is reported for trace ... -
Investigation of MgB2 bulk superconductors synthesized by in situ spark plasma sintering at different temperatures
(Elsevier, 2023)In this research, the synthesis of MgB2 bulk superconductor with in-situ spark plasma sintering technique at different temperatures and the impacts of these sintering temperatures on the critical parameters (density, phase ... -
Enhancing magnetic levitation and guidance force and weight efficiency of high-temperature superconducting maglev systems by using sliced bulk YBCO
(Wiley, 2023)We aimed to enhance the magnetic force efficiency of Maglev systems without increasing total weight. For this aim, we divided YBCO bulks into three slices horizontally to utilize the YBCO-permanent magnetic guideway (PMG) ... -
Molecular data confirm the presence of the Southern Crested Newt Triturus karelinii (Strauch, 1870) in Anatolia
(Taylor & Francis Ltd., 2023)Two species of newts of the genus Triturus are known to occur in Turkiye: Triturus ivanbureschi Wielstra & Arntzen, 2013 and T. anatolicus Wielstra & Arntzen, 2016. Here, we used the mitochondrial ND4 gene as a genetic ... -
The generalized Marchenko Method in the inverse scattering problem for a first-order linear system with energy-dependent potentials
(2023)The Marchenko method is developed in the inverse scattering problem for a linear system of first-order differential equations containing potentials proportional to the spectral parameter. The corresponding Marchenko system ...
