Güncel Gönderiler: Kimya Bölümü
Toplam kayıt 107, listelenen: 41-60
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Lead Biosorption By a Moderately Halophile Penicillium Sp. Isolated From Çamalti Saltern in Turkey
(2016)Ağır metallerin farklı organizmalarla biyosorbsiyonunun önemi sebebiyle Çamaltı tuzlasından izole edilen tuza toleranslı (halotolerant) fungusun biyosorbsiyon potansiyeli bu çalışma ile ilk kez araştırılmıştır. Penicillium ... -
HPLC fluorescence determination of ochratoxin A utilizing a double internal standard and its application to poultry feed
(2015)Abstract: A validated liquid chromatography method employing a fluorescence detector for the determination of ochratoxin A (OTA) was developed with double internal standard and it was applied to ten different poultry feeds. ... -
Eskişehir'de Eczane Teknisyenleri üzerine Bir Araştırma
(2015)Bu çalışmada, Eskişehir'deki eczacıların bakış açısından eczane teknisyenlerinin değerlendirilmesi üzerine bir araştırma gerçekleştirilmesi amaçlanmıştır. Metod: Bu çalışmanın eczacıları tesadüfî örnekleme yöntemi ile ... -
Stereoselective and regioselective synthesis of NN-substituted methyl 2-((azolyl)methyl)-3-arylacrylates from Baylis-Hillman acetates
(2017)N -Substituted methyl 2-((azolyl)methyl)-3-arylacrylates were synthesized stereo- and regioselectively with one-pot reaction between Baylis–Hillman acetates and a suitable acylazole in the presence of K2 CO3 as a base ... -
Synthesis, Characterization and Spectroscopic Studies on Tautomerism and Acidity Constants of Certain 4- (Phenyldiazenyl) Benzene-1,3-Diol Derivatives
(2016)Bu çalışmada, benzen-1,3-triol ve bazı sübstitüe amino benzen ile monoazo boyar maddeleri sentezlendi. Kimyasal yapıları spektroskopik teknikler ile aydınlatıldı. 4-(fenildiazenil)benzen-1,3-diol türevi bileşiklerinin ... -
Yumurta Kabuğu Tozu Katkılanmış Sert Poliüretan Köpükler: Termal İletkenlik, Basma Mukavemeti ve Yanma Davranışlarının İncelenmesi
(2018)Bu çalışmada; farklı kütlesel oranlarda yumurta kabuğu tozu (YKT) içeren sert poliüretan köpük kompozitler (SPKK) sentezlenmiştir. YKT, X-ışını kırınım difraktometresi (XRD), X-ışını floresans spektrometresi (XRF) ve Fourier ... -
Synthesis and antimicrobial investigation of some 5H-pyridazino[4,5-b] indoles
(2013)Synthesis and in vitro antimicrobial activities are reported for a series of 1,3,5-substituted 4-oxo-3,4-dihydro- 5H -pyridazino[4,5- b]indole derivatives. Corresponding pyridazino[4,5- b]indoles were prepared from ethyl ... -
A semi-empirical and density functional theory study of 2,2',3,4-tetrahydroxy-3'-sulpho azobenzene derivatives and their zirconium complexes
(2013)In this study, certain theoretical properties of three tetrahydroxyazo derivatives and their zirconium complexes, such as stability, reactivity, geometry and energy have been calculated by MOPAC2009 with the PM6 method and ... -
Spectrophotometric determination of the acidity dissociation constants of symmetric Schiff base derivatives
(Gazi University Eti Mahallesi, 2014)In this study, the acidity constants of series symmetric Schiff base derivatives have been determined using the UV-visible spectrophotometric method at a temperature of 25(±0.1) °C. The deprotonated acidity constants (pKa) ... -
Rapid direct spectrophotometric determination of zirconium(IV) in alloys with 2,2/,3,4-tetrahydroxy-3/-sulpho-5/-carboxyazobenzene reagent
(2011)In this study, 2, 2', 3, 4-tetrahydroxy-3'-sulpho-5'-carboxyazobenzene (tetrahydroxyazon SC) has been synthesized for the first time and used for direct spectrophotometric determination of zirconium(IV). Tetrahydroxyazon ... -
Antimicrobial, genotoxic and acute toxic effects of newly synthesized N-Pyridine schiff base derivatives
(2013)Nine N-pyridine Schiff bases (1-9) that were synthesized by reacting different ortho-, meta- and ortho-metasubstituted salicylaldehyde and 3,5-substituted aminopyridine were evaluated for their antimicrobial activity. The ... -
3-[(5-Chloro-2-hydroxybenzylidene)amino]-2-sulfanylidene-1, 3-thiazolidin-4-one
(2013)In the title compound, C10H7ClN2O2S2, the mean plane of the thioxothiazolidine ring [maximum deviation = 0.032 (2) Å] is inclined to the benzene ring by 12.25 (4)°. There is a strong intramolecular O - H...N hydrogen bond ... -
Determination of oxalate ion in bayer liquor using electrochemical method
(2011)The Bayer process can be summarized as the digestion of bauxite with caustic liquor and the subsequent precipitation of hydrated alumina [1]. Most bauxite contains organic compounds in various amounts. Depending upon the ... -
Synthesis of some alkylaminothiophene derivatives from 3,4-dibromothiophene and their theoretical calculations
(Elsevier Ltd, 2019)In this study, the copper catalyzed amination reactions of 3,4-dibromothiophene with some primary, cyclic and acyclic secondary amines were investigated to prepare novel electron rich-thiophenes which are expected to be ... -
Reaktif organobentonit katkıların sert poliüretan köpüğün bazı performans özellikleri üzerine etkisi
(Gazi Universitesi Muhendislik-Mimarlik, 2017)Bu çalışmada; bentonit, amin ve hidroksil fonksiyonelliğine sahip bileşikler ile modifiye edilmiş ve elde edilen organobentonitler sert poliüretan köpük nanokompozit (SPKN) sentezinde katkı olarak kullanılmışlardır. ... -
Metal chelate based site recognition of ceruloplasmin using molecularly imprinted polymer/cryogel system
(Taylor and Francis Inc., 2019)In the present study, N-Acetylneuraminic acid (NANA)-imprinted poly(2-hydroxyethyl methacrylate-N-methacryloyl-(L)-histidin-Cu(II)) p(HEMA-(MAH) 2 -Cu(II)) has been synthesized by radical polymerization for site recognition ... -
Biomimetic Imprinted Polymers: Theory, Design Methods, and Catalytic Applications. Theory, Design Methods, and Catalytic Applications
(Elsevier Inc., 2015)The development of novel and efficient biomimetic materials able to exhibit high catalytic activity is a massive challenge in synthetic chemistry. Natural enzymes have ability to catalyze chemical reactions with high ... -
Validated UV-Vis Spectrophotometric Method for the Determination of Copper using 2,3,4,6/-Tetrahydroxy-3/-Sulfoazobenzene in Real Samples
(Chemical Society of Pakistan, 2018)A selective and sensitive spectrophotometric method has been proposed for the determination of copper by forming red-brown chelate at pH 3.5 (3-4) with 2,3,4,6/-tetrahydroxy-3/-sulfoazobenzene (THSA). Molar absorptivity ... -
Egg shell powder added rigid polyurethane foams: The investigation of their thermal conductivity, compressive strength and fire behaviors [Yumurta Kabuğu Tozu Katkılanmış Sert Poliüretan Köpükler: Termal İletkenlik, Basma Mukavemeti ve Yanma Davranışlarının İncelenmesi]
(Turk Isı Bilimi ve Teknigi Dernegi, 2018)In this study, rigid polyurethane foam composites (SPKK's) containing egg shell powder (YKT) with different ratio were synthesized. YKT was characterized by using X-ray difractometer (XRD), X-ray fluorescence spectrometer ... -
4-Methyl-N-(4-methylphenylsulfonyl)-N-phenylbenzenesulfonamide
(2014)The whole molecule of the title compound, C20H 19NO4S2, is generated by twofold rotational symmetry. The N atom is located on the twofold rotation axis and has a trigonal-planar geometry. It is bonded by two S atoms of two ...
