Başlık için Fen Edebiyat Fakültesi listeleme
Toplam kayıt 1411, listelenen: 835-854
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Multicomponent diastereoselective synthesis of tetrahydropyridines as α-amylase and α-glucosidase enzymes inhibitors
(2023)Background: Researchers seeking new drug candidates to treat diabetes mellitus have been exploring bioactive molecules found in nature, particularly tetrahydropyridines (THPs). Methods: A library of THPs (1–31) were ... -
Muslihüddin Bin Abdulgani (Müezzin Hoca) Vakfı
(T.C. Vakıflar Genel Müdürlüğü, 2021)Balkanlarda hangi milletten olursa olsun, “Türkçe’yi nereden öğrendin” sorusuna hemen hemen aynı cevap verilir. “İstanbul’un fetih tarihi ne zamandır?” Gerçekten de İstanbul’dan çok önce fethedilerek Türk-İslam beldesi ... -
Mıcrowave-assısted synthesıs of some novel benzımıdazole compounds contaınıng oxadıazole moıety
(Editura Acad Romane, 2013)5(6)-Nitro-2-alkyllaryl-1H-benzimidazoles were obtained from the reaction of iminoester hydrochlorides and 4-nitro-o-phenylenediamine, and converted to their ester and hydrazide derivatives. Hydrazide derivatives were used ... -
Mıcrowave-assısted synthesıs of some nıtro-benzımıdazoles and theır salıcyl and ısatın schıff bases
(Chem Soc Ethiopia, 2017)A series of 5-nitrosubstituted benzimidazole and 6-nitro substituted benzimidazole derivatives were synthesized starting from iminoester hydrochloride and 4-nitro-o-phenylenediamine under microwave irradiation. the structure ... -
N-H?N and C-H?? interactions in 4-amino-3-methyl-5-(p- tolyl)-4H-1,2,4-triazole and 4-amino-3-methyl-5-phenyl-4H-1,2,4-triazole
(2006)The title compounds, C10H12N4, (I), and C9H10N4, (II), have been synthesized and characterized both spectroscopically and structurally. The dihedral angles between the triazole and benzene ring planes are 26.59 (9) and ... -
Nano-enabled agrochemicals: mitigating heavy metal toxicity and enhancing crop adaptability for sustainable crop production
(Springer, 2024)The primary factors that restrict agricultural productivity and jeopardize human and food safety are heavy metals (HMs), including arsenic, cadmium, lead, and aluminum, which adversely impact crop yields and quality. Plants, ... -
The nanoscale structure and unoccupied valence electronic states in FeSe1-xTex chalcogenides probed by X-ray absorption measurements
(Royal Soc Chemistry, 2015)We have studied the nanoscale structure and unoccupied electronic states in FeSe1-xTex by a combined analysis of Se K, Te L-1 and Fe K-edges X-ray absorption measurements. Extended X-ray absorption fine structure (EXAFS) ... -
Nationwide study of Escherichia coli producing extended-spectrum beta-lactamases TEM, SHV and CTX-M in Turkey
(Nature Publishing Group, 2013)Four hundred and forty extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli isolates were collected from 10 different hospitals in Turkey between 2011 and 2012. Clinical specimens consisted of urine (80.45%), ... -
Natural infection potential and efficacy of the entomopathogenic fungus Beauveria bassiana against Orosanga japonica (Melichar)
(Springer, 2020)In this study, potential of the entomopathogenic fungi (EPF) isolates from dead samples of Orosanga japonica (Melichar) (Hemiptera: Ricaniidae) was evaluated. Infected specimens with fungi results confirmed that the samples ... -
Natural radioactivity in ceramic tiles and associated radiological hazards
(Ijrr-Iranian Journal Radiation Res, 2019)Background: the natural radioactivity levels in ceramic tiles produced in Turkey were determined and the related radiological hazards were assessed. Materials and Methods: the natural radioactivity levels (Ra-226, Th-232 ... -
New 1,3,4-thiadiazol derivatives: Synthesis, computational study and X-Ray
(Elsevier, 2020)In this study, 4-hydroxyphenyl-3H-1,2,4-triazol-3-one derivatives (la-d), cyanomethoxyphenyl-3-alkyl/aryl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-acetonitriles (2a-d) and bis amino-1,3,4-thiadiazol-5-alkyl/aryl-2,4-dihydro-3H ... -
A new activated carbon-supported Pd-ZnO catalyst for Heck Cross-coupling reactions
(Elsevier, 2023)In this work, to develop catalysts for Heck-type coupling reactions, a hybrid ZnO-Pd nanocatalyst was fabricated on activated carbon sourced from polymer debris. Such techniques as transmission electron microscopy (TEM), ... -
A new approach on electromagnetism with dual number coefficient octonion algebra
(World Scientific Publ Co Pte Ltd, 2016)Dual number coefficient octonion (DNCO) is one of the kind of octonion, it has 16 components with an additional dual unit epsilon. Starting with DNCO algebra, we develop the generalized electromagnetic field equations of ... -
New chalcone derivatives with Schiff base-thiophene: Synthesis, biological activity, and molecular docking studies
(Maik Nauka/Interperiodica/Springer, 2019)New thiophene chalcones 3, 6 and thiophene Schiff base-chalcone derivatives 4a-4d, 7a-7d are synthesized. Structures of the compounds are confirmed by H-1 and C-13 NMR, and IR spectra. According to antimicrobial and ... -
New chlorogenic acid derivatives and triterpenoids from Scorzonera aucheriana
(The Scientific and Technological Research Council of Turkey-TUBİTAK, 2021)Chromatographic separation of n-hexane and ethyl acetate fraction of a crude methanol extract obtained from aerial parts of the Scorzonera aucheriana DC collected from Sivas province of Turkey yielded nine natural compounds; ... -
A new DNA polymerase i from Geobacillus caldoxylosilyticus TK4: Cloning, characterization, and mutational analysis of two aromatic residues
(Springer, 2009)DNA polymerase I gene was cloned and sequenced from the thermophilic bacterium Geobacillus caldoxylosilyticus TK4. The gene is 2,634 bp long and encodes a protein of 878 amino acids in length. The enzyme has a molecular ... -
A new fluorescent "turn-off" coumarin-based chemosensor: Synthesis, structure and Cu-selective fluorescent sensing in water samples
(Springer/Plenum Publishers, 2017)We report the synthesis and characterization two coumarin-based fluorescence probes, N'-{[7-(diethylamino)-2-oxo-2H-chromen-3-yl]carbonyl}pyridine-3-carbohydrazide (3) and N'-benzoyl-7-(diethylamino)-2-oxo-2H-chromene-3- ... -
A new green protocol for the synthesis of 2-substituted perimidines from hydrazones under catalyst- and solvent-free conditions
(Bulgarian Academy of Sciences, 2018)A new green protocol was developed for the synthesis of 2-substituted perimidines. The protocol involves a reaction of ethoxy carbonylhydrazone with 1,8-diaminonaphthalene under solvent- and catalyst-free conditions. Simple ... -
New high intensity Heavy - Ion beams @ INFN-LNS : NUMEN project status and perspective
(IOP Publishing, 2023)The upgrade project POTLNS to produce high-intensity beams has already started at INFN- Laboratori Nazionali del Sud in Catania (Italy). The POTLNS project was triggered by the NUMEN physics case that aims to provide ... -
New lipase assay using Pomegranate oil coating in microtiter plates
(Elsevier France-Editions Scientifiques Medicales Elsevier, 2016)Lipases play various roles in fat digestion, lipoprotein metabolism, and in the mobilization of fat stored in lipid bodies in animals, plants and microorganisms. in association with these physiological functions, there is ...
