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Toplam kayıt 1020, listelenen: 491-500
On r-circulant matrices with generalized bi-periodic Fibonacci numbers
(Springer Heidelberg, 2022)
In this paper, we calculate the Frobenius norm, and give upper and lower bounds for the spectral norm of r-circulant matrices whose entries are defined in terms of generalized bi-periodic Fibonacci numbers. We also provide ...
LC/MS-MS Analyses and in vitro anticancer activity of Tourneuxia variifolia extracts
(Taylor & Francis Ltd, 2022)
Several Saharan plants, despite their abundance of natural compounds, have received little attention. In this study, the chemical composition of polar extracts of Tourneuxia variifolia Coss. (Asteraceae), an endemic species ...
A composite ranking of risk factors for COVID-19 time-to-event data from a Turkish cohort
(Elsevier Sci Ltd, 2022)
Having a complete and reliable list of risk factors from routine laboratory blood test for COVID-19 disease severity and mortality is important for patient care and hospital management. It is common to use meta-analysis ...
New metallophthalocyanines including benzylphenoxy groups and investigation of their organic-field effect transistor (OFET) features
(Elsevier Sci Ltd, 2022)
In this study, metal and metal-free novel phthalocyanines containing peripheral and non-peripheral tetra 2-ben-zylphenoxy groups were synthesized. The compounds were characterized by UV-Vis, FT-IR, H-1 NMR, and MALDI-TOF ...
Evaluation of the relationship between youth attitudes towards marriage and motivation for childbearing
(Pergamon-Elsevier Science Ltd, 2021)
Introduction: It is known that the oldest and smallest social structure of human beings, which has been a social entity throughout history, is the family. Although there may be different opinions all over the world, marriage ...
Syntaxonomy and vegetation-environment relationships in Mount Akdag (Amasya/Turkiye)
(Springer-Verlag Italia Srl, 2022)
In this study, vegetation-environment relationships, species, and syntaxonomic diversity in Akdag, located in the transition zone to the Euxin of the Central Iran-Turanian floristic region, were investigated using classical ...
Significantly improved shear, dynamic-mechanical, and mode II fracture performance of seawater aged basalt/epoxy composites: The impact of halloysite nanotube reinforcement
(Elsevier - Division Reed Elsevier India Pvt Ltd, 2021)
The primary concern of fiber-reinforced polymers (FRPs) subjected to seawater environment is losing their initial mechanical performance since water can diffuse into the composite and deteriorates the fiber-matrix interface. ...
Effects of exercise on serum ischemia-modified albumin, brain natriuretic peptide and copeptin levels in boxers and kick boxers
(African Field Epidemiology Network-Afenet, 2022)
Introduction: boxing and kick boxing are combat sports that can cause severe head, neck, face and hand injuries during fighting. Then, traumatic brain injury (TBI) incidence is high in these sports. Ischemia-modified albumin ...
Frequency and voltage-dependent dielectric spectroscopy characterization of Al/(Coumarin-PVA)/p-Si structures
(Springer, 2021)
In this study, the frequency/voltage dependence of the dielectric constant (epsilon '), dielectric loss (epsilon ''), real/imaginary components of the complex electric modulus (M ', M ''), tangent loss (tan delta), ac ...
A novel copper (II) complex containing pyrimidine-4-carboxylic acid: Synthesis, crystal structure, DFT studies, and molecular docking
(Elsevier, 2022)
A new Cu(II) complex of pyrimidine-4-carboxylic acid was synthesized and characterized through a combination of single-crystal XRD, Ultraviolet-Visible (UV-Vis), and Fourier Transform Infrared Spectroscopy (FT-IR). The ...