In scientific visualization, we often handle vector or direction fields. An efficient way of visualizing such a vector or direction field is to cover the whole domain studied by a set of streamlines because they give good information about the flow and the topology of the underlying field. In this article, we propose to optimize already constructed streamlines by defining an optimization criter...

This paper describes a rapid two-step procedure for the purification of the low density lipoprotein receptor from bovine adrenal cortex membranes. After solubilization with nonionic detergents, the receptor adheres tightly to a DEAE-cellulose column at pH 6. Following elution from DEAE-cellulose, detergent is removed, leaving the receptor in a soluble form. The receptor is then subjected to aff...

The major peak of radioactivity from liver extracts appears to behave as a folate polyglutamate on Sephadex G-15, but its behaviour on DEAE cellulose is not consistent with a folate polyglutamate. The second, smaller peak behaved as a monoglutamate on both Sephadex G-15 and DEAE-cellulose, but could not be matched with any authentic folate monoglutamate. The present results fail to provide evid...

Diffusion tensor imaging provides information about structure and location of white matter tracts within the human brain which is of particular interest for neurosurgery. The reconstruction of neuronal structures from diffusion tensor data is commonly solved by tracking algorithms based on streamline propagation. These approaches generate streamline bundles that approximate the course of neuron...

We introduce a novel, automatic streamline seeding algorithm for vector fields defined on surfaces in 3D space. The algorithm generates evenly spaced streamlines fast, simply and efficiently for any general surface-based vector field. It is general because it handles large, complex, unstructured, adaptive resolution grids with holes and discontinuities, does not require a parametrization, and c...

1. Cell-free lysates of human peripheral blood lymphocytes contained two casein kinase activities and two histone kinase activities, which could be separated by chromatography on DEAE-Sephadex. 2. Neither of the casein kinase activities were stimulated by cyclic AMP. The major activity was eluted from DEAE-Sephadex between 0.4 and 0.45M-KCI, had a molecular weight of approx. 130000 (sucrose den...

The present study outlines the synthesis of a new microcarrier for anchoragedependent animal cell cultures similar to Cytodex 1. The new microcarriers were synthesized from the cross-linking soybean starch microspheres followed by modification with 2-diethylaminoethyl (DEAE). DEAE–soybean starch microspheres were used in anchorage-dependent cell cultures using 3 g/L of the carrier and a 2.0 × 1...