Background and Aims Motion and Gibbs artifacts have been previously shown separately as probable sources of Dark Rim Artifacts (DRA) in myocardial perfusion imaging [1,2]. Their relative importance through the cardiac cycle for a range of typical perfusion protocols has not been fully examined. Therefore, the appearance of Gibbs, motion, and T1 and T2* k-space modulation were studied by numeric...

Bacterial lipopolysaccharide (LPS) molecules are an important cell surface component that enables adhesion to surfaces and cell motility, amongst other functions. In Escherichia coli, there are multiple Heptosyltransferase enzymes involved in the biosynthesis of the core region of LPS. Here we describe the first ever cloning, expression, purification and characterization of Heptosyltransferase ...

We show that highly pure populations of humanSchwann cells can be derived rapidly and in a straightforward way, without the need for genetic manipulation, from human epidermal neural crest stem cells [hEPI-NCSC(s)] present in the bulge of hair follicles. These human Schwann cells promise to be a useful tool for cell-based therapies, disease modelling and drug discovery. Schwann cells are glia t...

The kinetics associated with the breakdown of epitaxy at low temperatures are studied for growth onto a number of Si surfaces, including (OOl), (117), (115), and (113). These surfaces are all initially generated at trench edges on a single patterned substrate. Growth on each of these surfaces at low temperatures is shown to result in a well-defined crystalline-to-amorphous transition. The epita...

We introduce an approach to automatic indexing of e-prints based on a patternmatching technique making extensive use of an Associative Patterns Dictionary (APD), developed by us. Entries in the APD consist of natural language phrases with the same semantic interpretation as a set of keywords from a controlled vocabulary. The method also allows to recognize within e-prints formulae written in TE...

&IMITT, n/TARU. hy%mms Uf hepi& purtd raCe@rS on @POthalamic feeding and satiety centers. Am. J. Physiol. 225(5) : IO89IO95 1973.-Evidence for a neural pathway from the hepatic portal vein to the lateral hypothalamus was found. Injections of hypertofiic saline and/or glucose into the portal vein of the rat produced changes in firing rate of certain lateral hypothalamic neurons. No responses to ...