Güncel Gönderiler: Kimya-Makale Koleksiyonu
Toplam kayıt 678, listelenen: 521-540
-
Electrokinetic properties of perlite
(Academic Press Inc Jnl-Comp Subscriptions, 1997)Electrokinetic properties of expanded and unexpanded perlite samples have been investigated using the microelectrophoresis technique. Perlite samples yield practically no isoelectric point in the pH range of 3 to II. Both ... -
Investigation of suitable digestion methods for the determination of total phosphorus in soils
(Elsevier Science Bv, 1997)Total phosphorus in five soils with different compositions which were obtained from different places were extracted by using Na2CO3 fusion, HClO4 digestion, HClO4 + HNO3 digestion, HF + HClO4 digestion or NaOBr oxidation ... -
Theoretical investigations on the electronic and structural properties of stannacyclopropylidenoids and plumbacyclopropylidenoids
(Maik Nauka/Interperiodica/Springer, 2015)The theoretical calculations at the MP2 and WB97XD levels have been carried out to investigate the isomeric structures, energies and properties of heavycyclopropylidenoids (C2H4MLiBr, M = Sn or Pb). The theoretical ... -
Spectrometric determination of iron and copper in vegetable oils after separation with schiff base impregnated silica gel column: a simple approach for eliminating the high organic matrix
(Wiley-Blackwell, 2015)A simple solid-phase extraction method has been described for the separation of Fe(III) and Cu(II) from liquid vegetable oils using N,N'-bis(4-methoxy salicylidene) ethylenediamine impregnated silica gel and the determination ... -
Computational investigations on the electronic and structural properties of germacyclopropylidenoids
(Elsevier Science BV, 2013)DFT (B3LYP) and ab initio (MP2) levels of theories using standard 6-31+G(d,p) basis set have been carried out to investigate the isomeric structures, energies and properties of LiBr-germacyclopropylidenoids. The theoretical ... -
Properties of iron oxide nanoparticles synthesized at different temperatures
(Springer, 2011)Iron oxide nanoparticles were synthesized by co-precipitation in air atmosphere at different temperatures and their structural and magnetic properties were investigated. The mean particle sizes of iron oxide nanoparticles ... -
Heavy metal concentrations in tissues of edible fish (MULLUS BARBATUS L., 1758) from the Candarli bay (Turkey)
(Parlar Scientific Publications (P S P),, 2011)Heavy metal contents were investigated in different organ tissues of Mullus barbatus (L., 1758) from Candarli Bay in the northeast Agean Sea in May 2004. Muscle, liver and gill tissue were analyzed for copper, lead, chromium, ... -
Determination of molybdenum by adsorptive catalytic stripping voltammetry in the presence of alizarin red s and persulphate
(Parlar Scientific Publications (P S P),, 2011)An alternative and sensitive method by adsorptive catalytic stripping voltammetry for the determination of trace molybdenum is proposed. The method is based on the adsorption collection of the Mo(VI)-Alizarin Red S complex ... -
An experimental and theoretical study on siderol isolated from sideritis species
(Inst Organic Chem and Biochem, 2011)The Fourier transform infrared (FTIR) spectrum of siderol, extracted from the aerial parts of Sideritis Gulendamii, has been measured in the range 4000-400 cm(-1). Vibrational assignments and analyses of the fundamental ... -
The use of chelating solid phase materials in flow injection systems: a review
(Taylor & Francis INC, 2011)Flow injection analyses facilitate faster, inexpensive, and more environmentally friendly sample-preparation techniques than many traditional owet chemistryo methods, and the use of flow injection has, therefore, expanded ... -
New energetic copper(II) complexes with pyrazolyl type ligands
(Wiley-V C H Verlag Gmbh, 2011)Nine Cu-II complexes (I-IX) containing the azide ion and bis-2,6-(pyrazol-1-yl)pyridine (pp), bis-2,6-(pyrazol-1-yl)pyridine (dmpp), and 2-(pyrazol-1-yl)-6-(3,5-dirnethylpyrazol-1-yl)pyridine (mpp), which are derivatives ... -
Comparison of serum paraoxonase 1 (pon1) activities among different sheep breeds in Turkey
(Medwell Online, 2011)Paraoxonase 1 (PON1, EC 3.1.8.1) is a calcium dependent mammalian enzyme that is synthesized primarily in the liver and is secreted into the serum where it is associated with High Density Lipoproteins (HDLs) and has a ... -
In vitro effects of some antibiotics on enzyme activity of carbonic anhydrase from bovine erythrocytes
(Parlar Scientific Publications (P S P),, 2011)The purpose of this study was to investigate the in vitro effects of six commonly used veterinary medical drugs (Killoxacin (TM), Gentavet (TM), Geosol (TM), Primoxal (TM), Lypectin (TM) and Penoksal-la (TM)) on erythrocyte ... -
In vitro effects of some pesticides on pon1q192 and pon1r192 isoenzymes from human serum
(Parlar Scientific Publications (P S P),, 2011)Human serum paraoxonase 1 (PON1) contains two polymorphic forms, Q (glutamine) or R (arginine) located at codon 192. The Q isoform has a higher activity for hydrolysis of diazoxon, sarin, and soman; whereas the R isoform ... -
Determination of rare earth elements in seawater by inductively coupled plasma mass spectrometry with off-line column preconcentration using 2,6-diacetylpyridine functionalized Amber lite XAD-4
(Elsevier Science Bv, 2011)An off-line column preconcentration technique using a micro-column of 2,6 diacetylpyridine functionalized Amberlite XAD-4 with inductively coupled plasma mass spectrometry (ICP-MS) as a means of detection has been developed. ... -
Influence of constituents on thermal properties of polymethacrylate derivatives-clay materials
(Wiley-Blackwell, 2011)In this study, the solution-mixing method was used to prepare polymethacrylate derivatives' (PaMAs) nano-composites with kaolinite. It was observed that the resultant materials could include exfoliated, intercalated, and ... -
In vitro gastro-intestinal method for the assessment of heavy metal bioavailability in contaminated soils
(Springer Heidelberg, 2011)Introduction Balya and its associated villages which is a town of the Balikesir region of Turkey have very rich zinc, lead, and manganese mines. These mines have been operating since the thirteenth century and now there ... -
Zinc(II) and mercury(II) complexes of pyrazole-based NNN-type ligands: Syntheses, X-ray structures, thermal analyses and DFT studies
(Wiley,, 2011)Monomeric zinc(II) and mercury(II) complexes containing tripodal nitrogen donor ligand 2,6-bis(3,4,5-trimethyl-N-pyrazolyl)pyridine (btmpp) were synthesized, and characterized by elemental and spectroscopic (IR, UV/Vis) ... -
In situ IR monitoring of complexation reaction between 2,6-bis(3,5-dimethylpyrazoyl)pyridine and some metal ions
(Elsevier Science Bv, 2011)In situ complexation reactions between 2,6-bis(3,5-dimethylpyrazoyl)pyridine (bdmpp) and some transition metals (Cu(2+), Co(2+) and Ni(2+)) were studied with a new method in liquid cell using FT-IR. In this method, the ... -
Characterization and inhibition of Rosmarinus officinalis L. polyphenoloxidase
(Springer, 2011)Polyphenoloxidase (PPO) from Rosmarinus officinalis L. was fractionated by ammonium sulfate ((NH4)(2)SO4) precipitation and dialysis, and then some of its kinetic properties such as optimum pH and temperature, substrate ...
