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Search Results: 1 - 10 of 896 matches for " Marzieh Amini "
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Amenability of the Restricted Fourier Algebras
Massoud Amini,Marzieh Shams Yousefi
ISRN Algebra , 2012, DOI: 10.5402/2012/782953
Abstract:
Pathogenicity Variations of Susceptibility and Resistance to Leishmania major MRHO/IR/75/ER Strain in BALB/c and C57BL/6 mice
Marzieh Amini,Hossein Nahrevanian,Mahin Farahmand
Iranian Journal of Parasitology , 2008,
Abstract: Background: To compare the pathogenicity differences in two susceptible Balb/c and resistant C57bl/6 mice infected with Leishmania major MRHO/IR/75/ER as a prevalent strain of zoonotic cutaneous leishmaniasis in Iran. Methods: Mice were assigned into four groups as control and infected BALB/c and C57BL/6 mice. Experimental leishma-niasis was initiated by (s. c) injection of the 2×106 L. major promastigotes into the basal tail of infected groups. The devel-opment of lesions was determined weekly by measuring the two diameters. After 10 weeks, all mice were killed humanly, target tissues including lymph node, spleen and liver from each mouse were removed, weighted, and their impression smears were prepared. Results: Proliferation of amastigotes inside macrophages, pathogenicity signs in two susceptible, resistant hosts was varied, and these variations were depended on mice strain. Conclusion: Host immunity may modify clinical signs and could affect the proliferation of amastigotes inside macro-phages, the size of lesions, the survival rates, the degree of hepatomegaly and splenomegaly and the percentage of amasti-gotes in lesion, liver, spleen, lymph node and brain smears.
Order Structure of the Figà-Talamanca-Herz Algebra
Marzieh Shams Yousefi,Massoud Amini,Fereshteh Sady
ISRN Geometry , 2011, DOI: 10.5402/2011/531023
Abstract:
2-(Methoxycarbonyl)quinolinium tetrachlorido(quinoline-2-carboxylato-κ2N,O)stannate(IV) methanol solvate
Marzieh Vafaee,Mostafa M. Amini,Seik Weng Ng
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810008561
Abstract: In the title salt, (C11H10NO2)[SnCl4(C10H6NO2)]·CH3OH, the Sn atom is chelated by the quinolincarboxylate unit and it exists in a distorted octahedral coordination geometry. The cation is linked to the solvent molecule by an N—H...O hydrogen bond; the solvent molecule is linked to the anion by an O—H...O hydrogen bond.
8-Hydroxy-2-methylquinolinium tetrachlorido(quinolin-8-olato-κ2N,O)stannate(IV) acetonitrile monosolvate
Marzieh Vafaee,Gholamhossein Mohammadnezhad,Mostafa M. Amini,Seik Weng Ng
Acta Crystallographica Section E , 2010, DOI: 10.1107/s160053681000810x
Abstract: In the title solvated salt, (C10H10NO)[SnCl4(C9H6NO)]·CH3CN, the SnIV atom is chelated by the N,O-bidentate 8-hydroxyquinolinate ligand and four chloride ions, generating a distorted SnONCl4 octahedral coordination geometry for the metal. In the crystal, the cations are linked to the anions and the solvent molecules by O—H...O and N—H...N hydrogen bonds, respectively.
Methyl(phenyl)bis(quinoline-2-carboxylato-κ2N,O)tin(IV) monohydrate
Marzieh Vafaee,Mostafa M. Amini,Seik Weng Ng
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536810054437
Abstract: The SnIV atom in each of the two independent molecules in the asymmetric unit of the title compound, [Sn(CH3)(C6H5)(C10H6NO2)2]·H2O, is N,O-chelated by two quinoline-2-carboxylate ions; the dative Sn—N bonds are significantly longer than the covalent Sn—O bonds. The two O and two N atoms comprise a trapezoid, and the diorganotin skeleton is bent over the longer N—N edge [C—Sn—C = 144.2 (1) and 144.5 (1)° in the two independent molecules]. The uncoordinated water molecules serve to connect the skew-trapezoidal bipyramidal tin-bearing molecules, generating a linear chain motif running along the ac diagonal. The crystal studied was a non-merohedral twin having a minor component of 33.2 (1)%.
8-Hydroxy-2-methylquinolinium tetrachlorido(pyrazine-2-carboxylato-κ2N1,O2)stannate(IV) methanol monosolvate
Marzieh Vafaee,Ezzatollah Najafi,Mostafa M. Amini,Seik Weng Ng
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811032296
Abstract: In the title solvated salt, (C10H10NO)[SnCl4(C5H3N2O2)]·CH3OH, the SnIV atom is chelated by the N,O-bidentate pyrazine-2-carboxylate ligand and four chloride ions, and shows a distorted octahedral SnNOCl4 coordination at the metal atom. The 8-hydroxy-2-methylquinolinium cation and the anion are linked to the methanol molecules by O—H...O, O—H...N and N—H...O hydrogen bonds, generating a linear chain running along [1overline{1}0]. There are two independent ion pairs and solvent molecules in the asymmetric unit. The crystal studied was a non-merohedral twin with a 41.8 (1)% twin component.
10-Hydroxybenzo[h]quinolinium tetrachlorido(2-methylquinolin-8-olato-κ2N,O)stannate(IV) methanol disolvate
Ezzatollah Najafi,Marzieh Vafaee,Mostafa M. Amini,Seik Weng Ng
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811031461
Abstract: In the disolvated title salt, (C13H10NO)[SnCl4(C10H8NO)]·2CH3OH, the SnIV atom is chelated by the N,O-bidentate 2-methylquinolin-8-olate ion and is further coordinated by four chloride ions, showing a distorted octahedral SnNOCl4 geometry. In the crystal, the cation and anion are linked to the methanol molecules by O—H...O and N—H...O hydrogen bonds.
Diaquadichloridomethylphenyltin(IV)–1,4,7,10,13-pentaoxacyclopentadecane (1/1)
Marzieh Vafaee,Mostafa M. Amini,Seik Weng Ng
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812002693
Abstract: The asymmetric unit of the title cocrystal, [Sn(CH3)(C6H5)Cl2(H2O)2]·C10H20O5, contains two independent formula units. The organotin molecules exhibit a six-coordinate metal atom and are linked to the crown ether molecules by water–crown ether O—H...O hydrogen bonds into a linear chain running along [101]. Each coordinated water molecule forms a pair of hydrogen bonds to the same crown ether; for the crown ether molecules, only four of the five O atoms are engaged in hydrogen-bonding interactions. The metal ions show a distorted trans-C2SnCl2O2 octahedral coordination geometry [C—Sn—C = 175.3 (1) and 178.9 (1)°].
Nanomolar determination of Pb (II) ions by selective templated electrode
Mazloum-Ardakani Mohammad,Amini Mohammad Kazem,Dehghan Marzieh,Kordi Elham
Journal of the Serbian Chemical Society , 2012, DOI: 10.2298/jsc110830210m
Abstract: Polypyrrole modified electrode, prepared by electropolymerization of pyrrole in the presence of methyl red as a dopant, was templated with respect to Pb2+ ion and applied for potentiometric and voltammetric detection of this ion. The templating process improved the analytical response characteristics of the electrode, specially their selectivity, with respect to Pb2+ ion. The improvement depends on both the incorporated ligand (dopant) and the templating process, with the latter being more vital. The potentiometric response of the electrode was linear within the Pb2+ concentration range of 2.0×10-6 to 5.0×10-2 M with a near-Nernstian slope of 28.6 mV decade-1 and a detection limit of 7.0 ×10-7 M. The electrode was also used for preconcentration differential pulse anodic stripping voltammetry (DPASV) and results showed that peak currents for the incorporated lead species were dependent on the metal ion concentration in the range of 1.0×10-8 to 1.0×10-3 M. The detection limit of DPASV method was 3.5 ×10-9 M. The selectivity of the electrode with respect to some transition metal ions was investigated. The modified-templated electrode was used for the successful assay of lead in two standard reference material samples.
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