LIGAND MIGRATION IN THE REACTION OF TITANIUM COMPLEXES WITH AlMe^sub 3^

Collection of Czechoslovak Chemical Communications;  April 1, 2007 ;     700+ words ......molecular weight polypropylene (M^sub n^ = 454 000; M^sub w^/M^sub n^ = 2.49; T^sub m^ = 158.2 C). Keywords: Polymerizations...Polymerization catalysts; Titanium complexes; Aluminum complexes; Lewis...dialkyl species L^sub n^MR^sub 2^ with either ...

Ultrafast Carotenoid-to-Chlorophyll Singlet Energy Transfer in the...

Biophysical Journal;  June 1, 2006 ;     700+ words ......the cytochrome b^sub 6^f (Cyt b^sub 6^f) complex from Bryopsis corticulans is...respectively. For the Cyt b^sub 6^f complex, to which 9-cis-α-carotene...The cytochrome b^sub 6^f(Cyt b^sub 6^f) complex is an oxidoreductase in the thylakoid...

Quantification of Cleaved [beta]^sub 2^-Microglobulin in Serum from...

Clinical Chemistry;  July 1, 2005 ;     700+ words ......membranes have higher serum concentrations of cleaved β^sub 2^M (mean, 8.5, 1.8, and 0.7 mg/L in cuprophane membrane...demonstrates and assigns the structure of a specific β^sub 2^M variant in sera from dialysis patients. Because this...2005 American Association for Clinical Chemistry ...

Quantitative characterization of the microstructure of two-phase TiB^sub...

Metallurgical and Materials Transactions;  November 1, 2003 ;     700+ words ......determined to quantitatively describe the connectivity of the TiB^sub 2^ minor phase around the Al^sub 2^O^sub 3^ major phase. The results illustrate that, in spite of...ceramic fabrication. For example, sintering aids such as B^sub 4^C assist in the pressureless sintering of TiB^sub 2^ ...

A Reinvestigation of Phase Equilibria in the System Al^sub 2^O^sub...

Metallurgical and Materials Transactions;  April 1, 2005 ;     700+ words ......0.28, and 0.67 mole fraction Al^sub 2^O^sub 3^, SiO^sub 2^, and ZnO, respectively. The...lead. The chemistry of both the complex sinters and slags formed in the...smelting process (ISP) includes the Al^sub 2^O^sub 3^-SiO^sub 2^-ZnO system...

Communications: The Pressure of Al^sub 2^O and Al in Equilibrium with a...

Metallurgical and Materials Transactions;  October 1, 2004 ;     700+ words ......justify this by considering the limiting ideal activity Of Al^sub 2^O^sub 3^ and computing the liquidus line from the free energy of...they compute the free energy of melting (dissociation) of Al^sub 4^C^sub 3^ as an optimization parameter rather than using the listed values. Motzfeldt et al.[3] ...

The Single Chlorophyll a Molecule in the Cytochrome b^sub 6^f Complex:...

Biophysical Journal;  June 1, 2005 ;     700+ words ...ABSTRACT The cytochrome b^sub 6^f complex of oxygenic photosynthesis mediates...al., 2003) of the cytochrome b^sub 6^f complex unambiguously show that a Chl...functionally similar cytochrome bc^sub 1^ complex of the respiratory chain does...

Self-Joining of Si^sub 3^N^sub 4^ Using Metal Interlayers

Metallurgical and Materials Transactions;  January 1, 2006 ;     700+ words ......testing gave a maximum joint strength of 147 MPa for Si^sub 3^N^sub 4^/Ti/Si^sub 3^N^sub 4^ samples hot pressed at 1500 C and 120 minutes. However...component shapes from monolithic engineering ceramics such as Si^sub 3^N^sub 4^ is difficult, and this has generated a continued ...

Kinetics of P2X^sub 7^ Receptor-Operated Single Channels Currents

Biophysical Journal;  April 1, 2007 ;     700+ words ......whole-cell currents evoked by activation of recombinant P2X^sub 7^ receptors or native P2X^sub 7^-like receptors varies greatly with species, agonist concentration...divalent cations such as Ca^sup 2+^ or Mg^sup 2+^ (3). Thus, P2X^sub 7^ receptor-dependent or P2X^sub 7^-like current kinetics have ...

A Brownian Dynamics Study of the Interactions of the Luminal Domains of...

Biophysical Journal;  October 1, 2006 ;     700+ words ......the cytochmme bc^sub 1^ (cyt bc^sub 1^) complex in mitochondria and photosynlhetic...cytochrome bc^sub 1^ (cyt bc^sub 1^) complex. The position of the Rieske FeS...down" position in the cyt bc^sub 1^ complexes close to the Q^sub 0^ site (3...

16,17-Dihydro Gibberellin A^sub 5^ Competitively Inhibits a Recombinant...

Plant Physiology;  June 1, 2004 ;     700+ words ......sub 5^, inhibition increased with the dose of dihydro GA^sub 5^, with Lineweaver-Burk plots showing that dihydro GA^sub 5^ changed only the K^sub m^ of the enzyme reaction, not the V^sub max^, giving a dissociation constant of the enzyme-inhibitor complex (K^sub i^) of 70 M. ...

Experimental study of phase equilibria in the PbO-ZnO"Fe^sub 2^O^sub...

Metallurgical and Materials Transactions;  August 1, 2003 ;     700+ words ......equilibria and liquidus in the multicomponent system PbO-ZnO-CaOSiO^sub 2^-FeO-Fe^sub 2^O^sub 3^ in air have been conducted over the temperature range between...1350 [degrees]C) to characterize the phase relations of the complex slag systems encountered in lead and zinc blast furnace sinters. The ...

HPLC-Atmospheric Pressure Chemical Ionization MS/MS for Quantification of...

Clinical Chemistry;  March 1, 2007 ;     700+ words ...Background: Quantification of F^sub 2^-Isoprostanes is considered...variety of diseases. Because of complex and lengthy sample preparation...for the quantification of F^sub 2^-Isoprostane F^sub 2t^ in human urine and plasma...molecular ions [M-H]^sup -^ of 15-F^sub 2t^-IsoP (m/z = 353[arrow ...

Crystallization of Amorphous Co^sub 78-x^Mn^sub x^B^sub 10^Si^sub 12^...

Metallurgical and Materials Transactions;  February 1, 2007 ;     700+ words ......at. pct. Due to the delay of crystallization, Co^sub 53^Mn^sub 25^B^sub 10^Si^sub 12^, unlike other compositions, exhibited a uniform grain...in the fully devitrified state. It was also found that Co^sub 2^MnSi was the first crystalline phase to nucleate in the...studied alloys became ...

The Effects of the Substitution on the Imidazole Ligand on the...

Photochemistry and Photobiology;  September 1, 2004 ;     700+ words ......sub 3^(phen)(Im-R)](SO^sub 3^CF^sub 3^) complexes, where phen is 1,10-phenanthroline...3^ (phen)(Im-R)], R = -H, -CH^sub 3^ complexes were reported to lead to mer...sub 3^(phen)(Im-R)](SO^sub 3^CF^sub 3^) complexes using imidazole ligands substituted...