Fen Fakültesi: Recent submissions
Now showing items 161-180 of 236
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New light curve analysis and period changes of the HW Vir-type binary system V1828 Aql
(Elsevier B.V., 2022)The new BVRI photometric observations of the HW Vir-type eclipsing binary system V1828 Aql (P = 0.11037399 days) were presented. From these measurements, 16 new eclipse times have been obtained. The light curves in BVRI ... -
First photometric study of two eclipsing binary star systems: V523 And and V543 And
(Elsevier B.V., 2022)Detailed photometric analysis of V523 And and V543 And from the Wide Angle Search for Planets survey is presented for the first time. It was found that while V523 And is a detached binary, V543 And is a semi-detached binary ... -
Immunosuppressive influence of parasitoid wasp Pimpla turionellae calyx fluid on host Galleria mellonella cell-mediated immune response and hemocyte viability
(Cambridge University Press, 2022)Endoparasitoid species devoid of symbiotic viruses inject secretions derived from their reproductive glands into their hosts during parasitism in order to avoid various immune responses of their hosts. Pimpla turionellae ... -
Novel hydrogels based on crosslinked chitosan with formyl-phosphazene using Schiff-base reaction
(Taylor & Francis Group, LLC, 2021)In this study, chitosan, an aminopolysaccharide, was reacted with phosphazene-derived crosslinker by Schiff-base reaction to yield crosslinked-chitosan hydrogel. Here, hexakis(4-formylphenoxy)cyclotriphosphazene was used ... -
HA particles as resourceful cancer, steroidal and antibiotic drug delivery device with sustainable and multiple drug release capability
(Taylor & Francis Group, LLC, 2021)Hyaluronic acid (HA) particles with divinyl sulfone (DVS) crosslinking at 10% mole ratio (HA macromolecule repeating units) were prepared and demonstrated as versatile drug carriers with sustainable and long-term release ... -
Profiling of apoptosis-associated proteins in human prostate cancer cells in response to Montivipera bulgardaghica albizona venom by protein array
(Taylor and Francis Ltd., 2021)Here we studied the possible cytotoxic and apoptotic effects of Anatolian endemic mountain viper, Montivipera bulgardaghica albizona (M.b. albizona) venom on human PC-3 and DU-145 prostate cancer cell lines. M.b. albizona ... -
Space curves related by a transformation of combescure
(Taylor and Francis Ltd., 2021)In this paper, the curves associated with the Combescure transform are discussed. With the help of the fact that these curves have a common Frenet frame, an equivalence relation is defined. The equivalence classes obtained ... -
Synthesis, catalytic, cytotoxic, and antibacterial properties of new Ru(II) and Pd(II) complexes bearing bidentate Schiff base ligand
(Taylor and Francis Ltd., 2021)In the present study, new Ru(II) and Pd(II) complexes with sulfonated bidentate Schiff base ligand were synthesized and structurally characterized by NMR, FT-IR, MS spectroscopic methods. Additionally, the solid-state ... -
The ultra-hot-Jupiter KELT-16 b: dynamical evolution and atmospheric properties
(Oxford University Press, 2022)We present broad-band photometry of 30 planetary transits of the ultra-hot-Jupiter KEL T -16 b, using five medium-class telescopes. The transits were monitored through standard B, V , R, I filters and four were simultaneously ... -
A New Approach to Mannheim Curve in Euclidean 3-Space
(Tamkang University, 2021)In this article, a new approach is given for Mannheim curves in 3-dimensional Euclidean space. Thanks to this approach, the necessary and sufficient conditions including the known results have been obtained for a curve to ... -
Analysis of herpetofaunal diversity of Istanbul islands with the new records of three localities
(Parlar Scientific Publications, 2021)Studies that aim to discover amphibian and reptilian species were conducted in the Istanbul islands which consists of Buyukada, Heybeliada, Burgazada and Kinaliada, during the years 2016-2019. The latest research of the ... -
Screening of in vitro antimicrobial activity of sedum hispanicum ethanol extract and determination of its biochemical composition
(Parlar Scientific Publications, 2021)Although medical sciences are progressing tremendously, the diseases caused by viruses, fungi, and bacteria are still an important issue for public health. For this reason, continuous research to determine new antimicrobial ... -
Target-Driven Design of a Coumarinyl Chalcone Scaffold Based Novel EF2 Kinase Inhibitor Suppresses Breast Cancer Growth In Vivo
(Amer Chemical Soc, 2021)Eukaryotic elongation factor 2 kinase (eEF-2K) is an unusual alpha kinase involved in protein synthesis through phosphorylation of elongation factor 2 (EF2). eEF-2K is highly overexpressed in breast cancer, and its activity ... -
Chemically Cross-Linked Poly(β-Cyclodextrin) Particles as Promising Drug Delivery Materials
(Amer Chemical Soc, 2021)One-pot synthesis of poly(β-cyclodextrin) (p(β-CD)) micro-/nanoparticles was accomplished using two different cross-linkers, divinyl sulfone (DVS) as p(β-CD)-1 and trimethylolpropane glycidyl ether (TMPGDE) as p(β-CD)-2. ... -
TLR2 and TLR4 molecules and antigen- presenting cell compositions in cecal tonsils of broiler chicks (Gallus gallus domesticus) in the first two weeks of the post- hatch period
(John Wiley and Sons Inc, 2022)Chickens do not have lymph nodes. Gut-associated lymphoid tissue is the major immu-nological organization for the digestive system. Cecal tonsils are an important part of this organization. This study is a descriptive and ... -
Methyl donor supplementation alters serum leptin levels and increases appetite but not body weight in cross-fostered male Syrian hamster offspring (Mesocricetus auratus)
(Wiley-VCH GmbH, 2022)A pregnant hamster's exposure to changes in environmental factors, such as light, temperature and nutrition, may influence behavioural and physiological changes in offspring. In this study, dietary methyl donor supplementation ... -
Synthesis, Molecular Structure, Biological Activity, and Sensor Properties of (E)-2-[(3,5-Bis(trifluoromethyl)phenylimino)methy1]-4,6-dichlorophenol
(Pleiades Publishing, Ltd., 2021)In the present study, a Schiff base (E)-2-[(3,5-bis(trifl uoromethyl)phenylimino)methyl]-4,6-dichlorophenol has been synthesized. Its spectroscopic and X-ray single-crystal data have been compared with the results of ... -
Mass transfer and tidally tilted pulsation in the Algol-type system TZ Dra
(Oxford University Press, 2022)Oscillating eclipsing Algols (oEAs) are remarkable systems that allow us to determine accurate fundamental stellar parameters (mass, radius) and probe the stellar interiors through pulsations. TZ Dra is an oEA system ... -
Unsustainable harvest of water frogs in southern Turkey for the European market
(Cambridge University Press, 2021)Frogs have been harvested from the wild for the last 40 years in Turkey. We analysed the population dynamics of Anatolian water frogs (Pelophylax spp.) in the Seyhan and Ceyhan Deltas during 2013-2015. We marked a total ... -
Investigation of horseradish peroxide and hydrogen peroxide mediated synthesis of amino-functional oligomers: Characterization and fluorescence study
(Elsevier, 2021)The insightful mechanism of two oligomerization methods using either horseradish peroxide (HRP)/hydrogen peroxide (H2O2) (enzymatic approach), or H2O2 (35% aqueous) (chemical approach) on 4-phenoxy aniline (PA) and ...
