Beside Ziegler-Natta and Phillips catalysts the development of methylaluminoxane (MAO) as cocatalyst in combination with metallocenes or other transition metal complexes for the polymerization of olefins has widely increased the possibilities in controlling the polymer composition, polymer structure, tacticity and special properties with high precision. These catalysts allow the synthesis of is...

The impact of teleconnections upon the surface climate has largely been examined via a response in monthly mean temperature or total precipitation. In this paper, a different approach is undertaken, by examining the response of synoptic weather-type frequencies to different teleconnection phases. For over 330 stations in the USA and Canada, the Spatial Synoptic Classification scheme has classif...

Oogenesis is a conserved process that requires gene transcription and storage of RNA for development until the embryonic genome is activated (Evsikov andEviskov, 2009). Analysis of oocyte mRNA profiles detected in polar bodies may allow evaluationof geneexpression in single oocyteswithout destroying the cell. Here we demonstrate the detection of such oocyte mRNA in its sibling polar body. We bi...

Molecular dynamics of two water models, SPC/E and TIP3P, at a number temperatures are used to test the Kivelson-Madden equation connecting single-particle collective dielectric relaxation times through Kirkwood factor. The relation is confirmed by simulations estimate nonlinear effect electric field on time. We show that main comes slowing down rotational relative contribution field-induced alt...

In this paper, an efficient early termination (ET) mechanism for systematic turbo-polar code (STPC) based on optimal estimation of scaling factor (SF) is proposed. The gradient the regression line which best fits distance between a priori and extrinsic information used to estimate SF. multiplication by proposed SF presents effectiveness in resolving correlation issue intrinsic reliability trade...

0022-2836/$ see front matter © 2010 E Integrins are heterodimeric transmembrane (TM) receptors formed by noncovalent associations of α and β subunits. Each subunit contains a single α-helical TM domain. Inside-out activation of an integrin involves the separation of its cytoplasmic tails, leading to disruption of αβ TM packing. The leukocyte integrin αLβ2 is required for leukocyte adhesion, mig...