Güncel Gönderiler: Fen Edebiyat Fakültesi
Toplam kayıt 2933, listelenen: 541-560
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Influence of Helichrysum arenarium on hemocyte-mediated immune responses and phenoloxidase enzyme activity of model organism Galleria mellonella (L.)
(Springer International Publishing AG, 2021)Helichrysum arenarium (L.) (Asterales:Asteraceae) Moench is a therapeutic plant which contains etheric oil, favones and favon glycosides, sterins, bitter substances and tannins having various coumarins. This plant is ... -
Ethnobotanical and chemical studies on gezo molasses from quercus brantii Lindl. Acorns in Turkey
(Polskie Towarzystwo Botaniczne, 2021)Oak molasses, called "Gezo," have been produced by the local people of Southeastern Anatolia. In this study, the ethnobotanical characteristics, production stages, health effects, and chemical composition of Gezo were ... -
Anti-mycobacterial activity and chemical composition of essential oils and phenolic extracts of the balsam of Liquidambar orientalis Mill. (Altingiaceae)
(Tubitak Scientific & Technical Research Council Turkey, 2021)Liquidambar orientalis Mill. (Altingiaceae) is known in Turkish as 'sigla' or 'gunluk' due to its gum-like exudate. Its exudate, 'balsam of Liquidambar' (BL), is of great commercial importance because it has pharmaceutical ... -
Comparative experimental and theoretical study on the molecular structure and spectroscopic properties of sideroxol isolated from Sideritis stricta and its electronic properties
(Taras Shevchenko Natl Univ Kyiv, 2021)Sideroxol, a kaurene diterpene, was obtained from the acetone extract of Sideritis stricta plant. The ground-state molecular geometry, vibrational frequencies, and NMR chemical shifts were also investigated by using various ... -
Forecasting of the Istanbul Stock Exchange (ISE) return with a golden ratio model in the epidemic of Covid-19
(Ministry Communications & High Technologies Republic Azerbai, 2021)A novel coronavirus called COVID-19 has spread rapidly all over the world in the recent days. This virus, which has become a global problem, has deeply affected the stock markets. This paper aims to present a new model ... -
Highly sensitive and selective voltammetric method for the determination of hydrazine at a poly (Eriochrome Black T) modified pencil graphite electrode (p-EBT/PGE)
(Taylor & Francis, 2021)This paper presents a simple, sensitive, selective, cost-effective indirect voltammetric method for determining hydrazine using a poly(Eriochrome black T) modified pencil graphite electrode (p-EBT-PGE). Alizarin Red S (ARS) ... -
Discontinuous convex contractions and their applications in neural networks
(Springer Heidelberg, 2021)In this paper, we show that the class of convex contractions of order m ∈ N is strong enough to generate a fixed point but do not force the mapping to be continuous at the fixed point. As a by-product, we provide a new ... -
A fractional model of cancer-immune system with Caputo and Caputo-Fabrizio derivatives
(Springer Heidelberg, 2021)Recently, it is important to try to understand diseases with large mortality rates worldwide, such as infectious disease and cancer. For this reason, mathematical modeling can be used to comment on diseases that adversely ... -
On the Betti numbers of the tangent cones for Gorenstein monomial curves
(Scientific Technical Research Council Turkey-Tubitak, 2021)The aim of the article is to study the Betti numbers of the tangent cone of Gorenstein monomial curves in affine 4-space. If CS is a noncomplete intersection Gorenstein monomial curve whose tangent cone is Cohen–Macaulay, we ... -
Approximation by rational functions on doubly connected domains in weighted generalized grand Smirnov classes
(Springer, 2021)Let G subset of C be a doubly connected domain bounded by two rectifiable Carleson curves. We use the higher modulus of smoothness in order to investigate the approximation properties of (p - epsilon)-Faber-Laurent rational ... -
Investigation of e-cigarette smoking model with mittag-leffler kernel
(Walter De Gruyter GMBH, 2021)Smoking is the most lethal social poisoning event. The World HealthOrganization defines smoking as the most important preventable cause of disease.Around 4.9 million people worldwide die from smoking every year. ... -
Improvement of the saturation magnetisation using Plackett-Burman design and response surface methodology: superparamagnetic iron oxide nanoparticles synthesised by co-precipitation under nitrogen atmosphere
(Springer, 2021)Superparamagnetic iron oxide nanoparticles (SPIONs) are highly promising materials especially for biomedical applications. Under study, Plackett-Burman (PB) design and subsequent response surface methodology (RSM) from ... -
Different functional groups functionalized hexagonal boron nitride (h-BN) nanoparticles and multi-walled carbon nanotubes (MWCNT) for hydrogen storage
(Elsevier Sci Ltd, 2021)The hexagonal boron nitride (h-BN) functionalized with p-phenylenediamine, multi-walled carbon nanotubes (MWCNT) functionalized with carboxyl and acylchloride groups, and h-BN-Ph-NH-CO-MWCNT structure were produced by ... -
Approximation theorems in weighted lebesgue spaces with variable exponent
(Univ Nis, 2021)In this work, approximation properties of de la Vallee-Poussin means are investigated in weighted Lebesgue spaces with variable exponent where weight function belongs to Muckenhoupt class. For this purpose direct, inverse ... -
A study on connectedness in neutrosophic topological spaces
(Amer Inst Physıis, 2021)In this study, we introduce the concept of neutrosophic connectedness and give some of its characterizations. Additionally, we present neutrosophic product space and show that this type of connectedness is not preserved ... -
Approximation by matrix transforms in morrey spaces
(Petrozavodsk State Univ, 2021)In this work, approximation properties of matrix transforms constructed via the Fourier and Faber series in the subspaces of Morrey spaces are investigated. -
Immobilized xanthine oxidase with bio-composite using gas biosensor
(Parlar Scientific Publications (P S P), 2021)The paper describes the development of biosensor for gas detection using bio-composite-xanthine oxidase. The xanthine oxidase enzyme is immobilized by bio-composite including gelatine and chitosan. The high stability of ... -
Epidermal growth factor mediates up-regulation of URGCP oncogene in human hepatoma cancer cells
(Pleiades Publishing Inc, 2021)Hepatocellular Carcinoma (HCC) is the fourth leading cause of cancer-related death in the World. Epidermal Growth Factor Receptor (EGFR) pathway plays an important role in HCC tumorigenesis. In the tumor microenvironment ... -
Temperature profiles and thermal stresses due to heat conduction under fading memory effect
(Springer Heidelberg, 2021)Examining the thermal stresses in thermally loaded materials used in the construction of technological devices is a fundamental problem to determine how functionally durable they are. Therefore, it is noteworthy to analyze ...
