Ara
Toplam kayıt 48, listelenen: 21-30
Gravitational charges of transverse asymptotically AdS spacetimes
(American Physical Soc, 2006)
Using Killing-Yano symmetries, we construct conserved charges of spacetimes that asymptotically approach to the flat or anti-de Sitter spaces only in certain directions. In D dimensions, this allows one to define gravitational ...
Reformulation of electromagnetism with octonions
(Soc Italiana Fisica, 2006)
In this paper, the octonion algebra and its general properties are defined by two different multiplication rules for octonion units. The field equations, potential and Maxwell equations for electromagnetism are investigated ...
Negative mass solitons in gravity
(American Physical Soc, 2006)
We first reconstruct the conserved (Abbott-Deser) charges in the spin-connection formalism of gravity for asymptotically (Anti)-de Sitter spaces, and then compute the masses of the AdS soliton and the recently found ...
Capillary electrophoretic determination of citalopram in pharmaceutical tablets and serum
(Springer Heidelberg, 2006)
Determination of citalopram by capillary electrophoresis is described. Compounds were separated at 28 kV in 75 mu m i.d. fused silica capillary tubing (total length 85 cm, effective length 65 cm) with 10 mM borate buffer, ...
Kinetics and equilibrium studies for the adsorption of Acid Red 57 from aqueous solutions onto calcined-alunite
(Elsevier Science BV, 2006)
The adsorption of Acid Red 57 (AR57) onto calcined-alunite was examined in aqueous solution in a batch system with respect to contact time. pH and temperature. The first-order, pseudo-second-order Kinetic and the intraparticle ...
Gauge transformation and electromagnetism with biquaternions
(Edp Sciences S A, 2006)
After de. ning biquaternions with complex numbers, the algebra of biquaternions and some properties are introduced. Maxwell's equations without sources in the dimensionless form are given. Then Maxwell's equations are ...
Biosorption kinetics and isotherm studies of Acid Red 57 by dried Cephalosporium aphidicola cells from aqueous solutions
(Elsevier Science Sa, 2006)
Equilibrium, kinetics and thermodynamic studies on the removal of Acid Red 57 (AR57) by biosorption onto dried Cephalosporium aphidicola (C. aphidicola) cells have been investigated in a batch system with respect to pH, ...
Methacryloylamidoglutamic acid having porous magnetic beads as a stationary phase in metal chelate affinity chromatography
(Taylor & Francis LTD, 2006)
We have prepared a novel magnetic metal-chelate adsorbent utilizing methacryloylamidoglutamic acid (MAGA) as a metal-chelating ligand. MAGA was synthesized by using methacryloyl chloride and L-glutamic acid dihydrochloride. ...
Spectroscopic determination of acid dissociation constants of some pyridyl-substituted 2-aminothiazole derivatives
(American Chemical Society, 2006)
The acid dissociation constants, K-a, of nine biologically active 2-amino-4-(x-pyridyl)- thiazole, 2-methylimino-3-methyl- 4-(x-pyridyl)- 2,3-dihydrothiazole, and 2-methylamino-4-(x-pyridyl)- 2,3-dihydrothiazole were ...
(mu-Perfluorosebacato-kappa O-2 : O ')bis[aquabis(1,10-phenanthroline-kappa N-2,N ')zinc(II)] perfluorosebacate bis[triaqua(perfluorosebacato-kappa O)(1,10-phenanthroline-kappa N-2,N ')zinc(II)] 3.32-hydrate
(Blackwell Publishing, 2006)
The asymmetric unit of the title compound, [Zn-2{O2C(CF2)(8)CO2}(C12H8N2)(4)(H2O)(2)](C10F16O4)center dot[Zn{O2C(CF2)(8)CO2}(C12H8N2)(H2O)(3)]center dot 3.32H(2)O, contains a neutral mononuclear [ZnL(phen)(H2O)3] complex ...