Güncel Gönderiler: Kimya Bölümü
Toplam kayıt 724, listelenen: 401-420
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Adsorption of polyvinylimidazole onto kaolinite
(Academic Press Inc Elsevier Science, 2006)The adsorption of polyvinylimidazole (PVI) onto kaolinite from aqueous solutions has been investigated systematically as a function of parameters such as calcination temperature of kaolinite, pH, ionic strength, and ... -
Analysis of essential oil composition of Thymbra spicata var. spicata: Antifungal, antibacterial and antimycobacterial activities
(Walter De Gruyter Gmbh, 2006)The fresh leaves and brine of leaves of Thymbra spicata var. spicata (KARAKIZ (TM)) were analyzed by hydrodistillation, headspace and GC/MS techniques. The main components were determined as carvacrol, p-cymene, beta-myrcene, ... -
2-Acetyl-3-methyl-4H-1,4-benzothiazine: a redetermination at 100 K
(Wiley-Blackwell,, 2006)The structure of the title compound, C11H11NOS, has been reported previously at room temperature by Ferguson & Ruhl [Cryst. Struct. Commun. (1982), 11, 1033-1038]. We report here a redetermination, at 100 (2) K, with ... -
Fatty acid composition of seeds of some species of Nepeta L.
(Taylor & Francis Ltd, 2007)The fatty acid compositions of Nepeta viscida, N. cilicica, N. crinita, N. nuda ssp. glandulifera and N. aristata were analyzed by GC/MS. The main free fatty acids were found as linolenic acid (49.8 - 58.5%), linoleic acid ... -
Crystal structure analysis of {bis-2,6-(3,5-dimethylprazolyl) pyridine-dicyanato}copper(II)monohydrate
(Wiley-V C H Verlag Gmbh, 2006)A monotruclear copper(II) complex, [Cu(dmpp)(OCN)(2)(H2O)], was synthesized using 2,6-bis (3,5-dimethylpyrazolyl) pyridine (dmpp) and cyanate anion (OCN), and characterized by single crystal X-ray diffraction. The coordination ... -
Chemotaxonomic evaluation of species of Turkish salvia: Fatty acid composition of seed oils. II.
(Acg Publications, 2007)Fatty acids composition of seed oil of Salvia viridis, S. hydrangea, S. blepharochleana, S. chianantha, S. staminea, S. hypergeia,, S. cilicica, S. caespitosa, S. sclarea, S. cadmica, S. microstegia, S. pachystachys and ... -
Preconcentration of heavy metals and matrix elimination using silica gel chemically modified with 2,3-dihydroxybenzaldehyde
(Taylor & Francis Inc, 2007)Many direct methods cannot easily be used to measure analytes such as Cd(II), Cu(II), Ni(II), Pb(II), and Zn(II) ions in sea and river water since these elements are present at very low concentration and the sample has a ... -
Toxicity of acetone extract of sideritis trojana and 7-epicandicandiol, 7-epic andicandiol diacetate and 18-acetylsideroxol against stored pests acanthoscelides obtectus (say), sitophilus granarius (l.) and ephestia kuehniella (zell.)
(Elsevier Science Bv, 2006)Acetone extract of Sideritis trojana and ent-kaurene diterpenoids 7-epicandicandiol, and 18-acetylsideroxol showed toxicity against Acanthoscelides obtectus and Sitophilus granarius while 7-epicandicandiol diacetate showed ... -
Diterpenoids from Sideritis tmolea P. H. Davis
(Acg Publications, 2007)Four known ent-kaurene diterpenoids 1-4 were isolated from the acetone extract of Sideritis tmolea P. H. Davis by using different chromatographic methods. The structures of the isolated compounds were determined as siderol ... -
Characterization, adsorption, and electrokinetic properties of modified sepiolite
(Taylor & Francis Inc, 2016)The metal ion adsorption and electrokinetic properties of sepiolite modified by 3-(trimetoxysilyl)propyl metaacrylate was studied. The characterization of modified sepiolite was made by Fourier transform infrared spectroscopy ... -
Chemotaxonomic evaluation of Turkish species of Salvia: Fatty acid compositions of seed oils
(Pergamon-Elsevier Science Ltd, 2006)Fatty acid composition of nine species of Salvia, naturally growing in Turkey was determined: Salvia syriaca, Salvia potentilli-folia, Salvia candidissima ssp. occidentalis, Salvia macrochlamys, Salvia poculata, Salvia ... -
Synthesis, characterization, electrokinetic and adsorption properties of an organo-modified adsorbent for selective removing of metal ions
(Parlar Scientific Publications (P S P),, 2016)Firstly, sepiolite was modifed using N-1-[3-(trimethoxysiliylpropyl)]. In order to support the modification of sepiolite surface, FTIR, XRD, DTA/TG and SEM analyses were carried out. It was found that the chemical bonding ... -
Carbonic anhydrase IX as prognostic marker for tumor progression and as a target for novel antitumor drugs
(Turkish Biochem Soc, 2007)One of the genes highly upregulated by hypoxia is that encoding isozyme IX of the metalloenzyme carbonic anhydrase [ CA, EC 4.2.1.1], CA IX. CA IX is a high activity tumor- associated membrane enzyme predominantly found ... -
Flow behaviour and rheological assesment of kaolinite/pdms pastes via capillary rheometer
(Parlar Scientific Publications (P S P), 2016)An improved understanding of the influence of some parameters such as solid:liquid ratio, particle size and temperature on the rheology of kaolinite/silicone oil AK 60 000 pastes is needed so that new application areas of ... -
Determination of removal efficiency of hexavalent chromium from aqueous solutions and tannery wastewater using kaolinite
(Parlar Scientific Publications (P S P), 2016)The discharge of effluents containing chromium (VI) generated by tannery industry reveals serious toxicological and aesthetical problems in the environment. In this study, the use of kaolinite as an adsorbent was evaluated ... -
Complexation studies of N,N '-ethylene-bis(salicylideneimine)-cation complexation behavior in dioxane-water mixtures by conductometric studies
(Maik Nauka/Interperiodica/Springer, 2006)The tetradentate-ligand Schiff base derived from salicylaldehyde and 1,2-diaminoethane has been synthesized. The stability constants and thermodynamic values for the complexation between ZnCl2, Cu(NO3)(2), and AgNO3 salts ... -
The synthesis, structure and thermal decomposition of some Cu(II) complexes with NNN type ligands and thiocyanate anion
(Oldenbourg Verlag, 2007)Three new complexes were prepared from Cu(H) thiocyanate and bis-2,6(pyrazol-1-yl) pyridine (pp), bis-2,6(3,5-dimethylpyrazol-1-yl) pyridine (dmpp) and 2(3,5-dimethylpyrazol-1-yl)-6-(pyrazol-1-yl) pyridine (mpp). One of ... -
Comparison of some newly synthesized chemically modified Amberlite XAD-4 resins for the preconcentration and determination of trace elements by flow injection inductively coupled plasma-mass spectrometry (ICP-MS)
(Royal Soc Chemistry, 2006)XAD copolymer resins may be functionalized with heavy metal ion-selective ligands either by covalent linkage to the polymer backbone or by impregnation. These resins may be tailored to be specific for certain heavy metals ... -
Some coumarins and benzoxazinones as potent paraoxonase 1 inhibitors
(Taylor & Francis Inc, 2016)In this study, we aimed to investigate the effect of some coumarin and benzoxazinone derivatives on the activity of human PON1. Human serum paraoxonase 1 was purified from fresh human serum blood by two-step procedures ... -
Amphenicol and macrolide derived antibiotics inhibit paraoxonase enzyme activity in human serum and human hepatoma cells (HepG2) in vitro
(Maik Nauka/Interperiodıca/Springer, 2006)Human serum paraoxonase (hPON 1) was separately purified by ammonium sulfate precipitation and hydrophobic interaction chromatography The in vitro effects of commonly used antibiotics, namely clarithromycin and chloramphenicol, ...
