Başlık için Fen Edebiyat Fakültesi listeleme
Toplam kayıt 1475, listelenen: 1077-1096
-
A psychometric scale for determining university students' attitudes towards the statistics courses they take: Statistical attitude scale (SAS)
(2014)The aim of this study is to develop a Likert type scale to measure the attitudes of university students towards the statistics course they take. Firstly, first and third grade students from Ondokuz Mayis University Arts ... -
Purification and characterisation of a polyphenol oxidase from Boletus erythropus and investigation of its catalytic efficiency in selected organic solvents
(Elsevier, 2010)Polyphenol oxidase (PPO) was purified from Boletus erythropus using a Sepharose 4B-L-tyrosine-p-amino benzoic acid affinity column. Optimum pH and temperature were found to be 8.0 and 20 °C, respectively, using 4-methylcatechol ... -
Purification and characterization of a polyphenol oxidase from cimin grape (Vitis vinifera spp., Cimin)
(Research Journal Biotechnology, 2016)A polyphenol oxidase (PPO) from Cimin grape was purified 11.2-fold by using a Sepharose 4B-L-tyrosine-p-aminobenzoic acid affinity column. the optimum pH and temperature of PPO purified from Cimin grape were 7.5 and 30 ... -
Purification and characterization of an extracellular lipase from Mucor hiemalis f. corticola isolated from soil
(Elsevier, 2012)We have screened 39 microfungi isolates originated from soil in terms of lipolytic activity. Out of all screened, a novel strain of Mucor hiemalis f. corticola was determined to have the highest lipase activity. The ... -
Purification and characterization of extracellular a-amylase from a thermophilic Anoxybacillus thermarum A4 strain
(Inst Tecnologia Parana, 2016)alpha-Amylase from Anoxybacillus thermarum A4 was purified using ammonium sulphate precipitation and Sephadex G-100 gel filtration chromatography, with 29.8-fold purification and 74.6% yield. A4 amylase showed best performance ... -
Purification of acetylcholinesterase from Halyomorpha halys (Stal) (Heteroptera: Pentatomidae) and management of control of the Pest through inhibition of the enzyme
(Springer, 2023)Halyomorpha halys (Stal) (Heteroptera: Pentatomidae) has brought about agricultural harm throughout the Eastern Black Sea coastline since 2017. It continues to come to a threat because there are no adequate studies on ... -
Purification, characterization and industrial application of the alkaline protease (akap) from Anoxybacillus kestanbolensis K4
(Elsevier Science Bv, 2012)Bu çalışmada yeni bir proteolitik enzim izole edilmiş, saflaştırılmış ve termofilik bir bakteri olan Anoxybacillus kestanbolensis K4 ile karakterize edilmiştir . Enzim, amonyum sülfat fraksiyonasyonu, anyon değişim ... -
Pyronin Y (basic xanthene dye)-bentonite composite: a spectroscopic study
(Elsevier Science Bv, 2014)The expansion by 1.43 Angstrom of basal spacing and the shift to higher frequencies of in-plane ring vibrations of the Pyronin Y molecule at 1603 and 1527 cm(-1) on the formation of Pyronin Y-bentonite composite exhibited ... -
Quantum emitter interacting with graphene coating in the strong-coupling regime
(Amer Physical Soc, 2020)We demonstrate the strong coupling of a quantum dot and a graphene spherical shell coating it. Our simulations are based on solutions of three-dimensional Maxwell equations, using a boundary element method approach. ... -
Quaternionic osculating curves in Euclidean and semi-Euclidean space
(Taylor & Francis Ltd, 2016)In this study, the osculating curves in Euclidean space E-3 and E-4, well known in differential geometry, are studied through the instrumentality of quaternions. We inoculate sundry delineations for quaternionic osculating ... -
Quinolone-rhodanine hybrid compounds: Synthesis and biological evaluation as anti-bacterial agents
(Wiley, 2022)As potential antimicrobial agents, 4-fluoroaniline and diethyl (ethoxymethylene)malonate were used to efficiently synthesize a new quinolone (3-9) series. The (HNMR)-H-1 and C-13 NMR, IR, mass spectrometry, and elemental ... -
Quo vadis: signaling molecules and small secreted proteins from mycorrhizal fungi at the early stage of mycorrhiza formation
(Springer, 2021)Mycorrhizal symbiosis has been evolved to be ubiquitous in natural and agricultural ecosystems. Mycorrhiza formation helps host plants acquire more nutrients and water, thereby improving host plant resistance to abiotic ... -
Radiation shielding properties of mortars with minerals and ores additives
(Elsevier Sci Ltd, 2019)Incorporation of mineral and ores as fine aggregate additives was investigated for its effect on the neutron and gamma-ray shielding properties of cement mortar. Five mortar mixtures have been prepared with different ... -
The radiation shielding properties of the low temperature alloys
(Afyon Kocatepe University, 2021)Solder alloys are significant for many applications. In addition to the physical electrical and magnetic properties of solders, it is of great importance to determine the shielding properties of the materials in order ... -
Radiation shielding tests of crosslinked polystyrene-b-polyethyleneglycol block copolymers blended with nanostructured selenium dioxide and boron nitride particles
(MDPI, 2022)In this work, gamma-ray shielding features of crosslinked polystyrene-b-polyethyleneglycol block copolymers (PS-b-PEG) blended with nanostructured selenium dioxide (SeO2) and boron nitride (BN) particles were studied. This ... -
Radioactivity and heavy metal concentrations in food samples from Rize, Turkey
(Wiley, 2012)BACKGROUND: Rize in Turkey was contaminated by the Chernobyl accident in 1986. A comprehensive study was planned and carried out to determine the radioactivity levels and heavy metal concentrations in four food categories ... -
Radioactivity and heavy metal concentrations in various honey samples
(Scibulcom Ltd, 2015)In this study, the contents of natural radionuclide K-40 and fission product Cs-137 in floral honey samples from Rize and some other cities in Turkey, were investigated. the results indicated that 80% of honey samples were ... -
Radioactivity and heavy metal concentrations of some commercial fish species consumed in the Black Sea Region of Turkey
(Elsevier Ltd, 2012)Marine fish is an important daily diet item for the people of Turkey. The Black Sea Region of Turkey was contaminated by the Chernobyl accident in 1986, a comprehensive study was planned and carried out to determine the ... -
Radioactivity in Kosovo honey samples
(Hard, 2020)The aim of this study was to determine naturally occurring radionuclides (K-40, Ra-226 and Th-232) and the artificial radionuclide Cs-137 in various honey samples from Kosovo. This study is of particular importance because ... -
Radioactivity in soils of Kosovo and radiological implications
(MDPI, 2022)This study was carried out to determine the presence of the main radionuclides from natural and artificial radioactivity in the soil of Kosovo, using gamma-ray spectroscopy. The mean activity concentration for Ra-226, ...
