Erişim şekli için "info:eu-repo/semantics/closedAccess" FEF, Kimya Bölümü Koleksiyonu listeleme
Toplam kayıt 343, listelenen: 21-40
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Bioevaluation of synthetic pyridones as dual inhibitors of alpha-amylase and alpha-glucosidase enzymes and potential antioxidants
(Wiley, 2022)Herein, a library of novel pyridone derivatives 1-34 was designed, synthesized, and evaluated for alpha-amylase and alpha-glucosidase inhibitory as well as antioxidant activities. Pyridone derivatives 1-34 were synthesized ... -
Calculation of thermodynamic properties of the most important forty-seven different solvents to create an information data bank through semi-empirical quantum methods used in determination of theoretical pKa
(Natl Inst Science Communication-Niscair, 2020)In this study, we have calculated the thermodynamic properties, especially in determining the theoretical acidic properties and pKa values of organic compounds, as enthalpy (Delta H, kcal/mol), heat capacity (C, cal/Kmol), ... -
Catalytic activity of palladium doped activated carbon from waste coffee on some environmental pollutants
(Elsevier, 2022)The presence of nitro compounds and such commercial dyes as Congo red, methylene blue, methyl orange and methyl red in water/wastewater causes environmental issues. The treatment of such industrial contaminants, new efficient ... -
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, ... -
Characteristics in the whole-genome sequence of Klebsiella pneumoniae ST147 from Turkey
(Akademia Kiado Zrt., 2022)The study aimed to analyze antibiotic resistance determinants in a carbapenem-resistant Klebsiella pneumoniae by whole-genome sequencing (WGS). K. pneumoniae was isolated from a urine sample and it was characterized by 16S ... -
Characterization and inhibition studies of carbonic anhydrase from gill of Russian Sturgeon Fish (Acipenser gueldenstaedtii)
(Taylor & Francis Ltd, 2016)An alpha-carbonic anhydrase (CA, EC 4.2.1.1) was purified and characterized kinetically from gill of Acipenser gueldenstaedtii as an endangered sturgeon species. the carbonic anhydrase was purified 66-folds with yield 20.7% ... -
Characterization and pillaring of a Turkish bentonite (Resadiye)
(Elsevier, 2007)The shifts of the Si{single bond}O{single bond}Si stretching and the Si{single bond}O{single bond}Al and Si{single bond}O{single bond}Si bending modes, as well as the free silica peak in the IR spectra and the strengthening ... -
Characterization of AlFe-pillared Unye bentonite: A study of the surface acidity and catalytic property
(Elsevier Science Bv, 2015)Aluminium-iron-pillared bentonite has been prepared by incorporation of the iron mixed aluminium-polyoxocation into bentonite layers and characterized by the powder X-ray diffraction, Fourier transform infrared, thermal ... -
Cloning, expression and characterization of highly thermo- and pH-stable maltogenic amylase from a thermophilic bacterium Geobacillus caldoxylosilyticus TK4
(Elsevier, 2010)Maltogenic amylases (MAases), a subclass of cyclodextrin (CD)-hydrolyzing enzymes, belong to glycoside hydrolase family 13. A gene corresponding to MA in Geobacillus caldoxylosilyticus TK4 (GcaTK4MA) was cloned into pET28a(+) ... -
Cobalt borophosphate on nickel foam as an electrocatalyst for water splitting
(Elsevier, 2022)One of the most critical steps in the transition to carbon-free energy systems is sustainable hydrogen evolution from water. In this research, a cobalt borophosphate crystalline compound consisting of phosphate and borate ... -
Comparison of electrostatic potential obtained from different atomic point charges calculation methods for a large set of molecules
(World Stientific Publishing, 2021)The Electrostatic Potential is of great importance in chemical reactivity since it is closely related to many of molecular properties. Despite the fact that there are significant improvements in the quantum mechanical ... -
Composition and antimicrobial activity of essential oil from the flower of Rhododendron luteum Sweet
(Chemical Publishing Co., 2012)Essential oil from air-dried flower of Rhododendron luteum Sweet (Ericaceae), was obtained by hydrodistillation in a Clevenger-type apparatus and analyzed by GC-MS and GC-FID. Sixty-four components were identified in the ... -
Computational studies on the anastrozole and letrozole, effective chemotherapy drugs against breast cancer
(Pergamon-Elsevier Science Ltd, 2014)In this paper, computational studies were carried out on anastrozole and letrozole, chemotherapy drugs used against breast cancer. Optimization and frequency calculations were performed at B3LYP/6-31G (d) basis set and ... -
A convenient method for the synthesis of 3,4-dihydroquinazolines from iminoester hydrochlorides via microwave irradiation
(Sage Publications Ltd, 2019)This is work presents a simple and practical strategy for the synthesis of 2-substituted-3,4-dihydroquinazolines in which the ring closure reaction of 2-aminobenzylamine with corresponding iminoester hydrochlorides via ... -
Copper(II) complexes with pyridine-2,6-dicarboxylic acid from the oxidation of copper(I) iodide
(Taylor & Francis Ltd, 2017)Via an oxidation reaction of Cu(I) iodide with pyridine-2,6-dicarboxylic acid (H2L) in DMF three copper(II) complexes, [(CH3)(2)NH2](2)[CuL2] (1), K-2 [CuL2]center dot H2L center dot H2O(2) and [Cu(L)(H2O)](n) (3), were ... -
Correlation between phenolic compounds and antioxidant activity of Anzer tea (Thymus praecox Opiz subsp caucasicus var. caucasicus)
(Elsevier Science Bv, 2014)Phenolic compounds of Thymus praecox Opiz subsp. caucasicus var. caucasicus were analyzed by high performance liquid chromatography equipped with an ultraviolet detector (HPLC-UV). Quercetin (co-eluting with luteolin) and ... -
Covalent grafting of pyridine-2-methanol into kaolinite layers
(Elsevier, 2013)A novel hybrid organic-clay material was prepared by grafting of pyridine-2-methanol in the interlayer space of kaolinite by using a kaolinite/methanol compound as an intermediate. A kaolinite/methanol compound was obtained ... -
Crystal structure of 4-[(4-Ethyl-5-Phenyl-4H-1,2,4-Triazol-3-yl)sulfanyl]phthalonitrile
(Pleiades Publishing Inc, 2018)The structure of the 4-[(4-ethyl-5-phenyl-4H-1,2,4-triazol-3-yl)sulfanyl]phthalonitrile titled molecule is determined by means of X-ray diffraction. the title compound has weak inter- and intramolecular C-H...N-type hydrogen ... -
Crystallographic, spectroscopic (FTIR and NMR) and quantum computational calculation studies on bis(2-methoxy-4-((E)-prop-1-enyl)phenyl)oxalate
(Elsevier Science Bv, 2017)In this paper, we report first, a new synthesis of bis(2-methoxy-4-((E)-prop-1-enyl)phenyl)oxalate, namely, C22H22O6, (I). Then, we present detailed FTIR, H-1 NMR,C-13 NMR spectroscopies and single-crystal X-ray diffraction ... -
A cyanide-based coordination polymer for hydrogen evolution electrocatalysis
(Springer, 2018)Research on H-2 production has recently been directed to the development of cost-efficient and robust heterogeneous catalysts for hydrogen evolution reaction (HER). Given the promising catalytic activities of several ...