Mini-columns and ghost columns in Columbia River lava

Cortical Columns

The most prominent feature of the architecture of the cortex is its horizontal organization into layers. Each layer contains different cell types, and forms different types of connections with other neurons. However, a strong vertical organization is often also apparent: neurons stacked on top of each other through the depth of the cortex tend to be connected and have similar response propertie...

HPLC Columns

Silicate entrapped columns--new columns designed for capillary electrochromatography.

Designed especially for capillary electrochromatography (CEC), silicate-entrapped columns are made by trapping particles of chromatographic packing material in a network of silica. Once entrapped, the capillary no longer requires frits. This renders a more homogeneous and stable packed bed. Accidental breakage of the fragile frits is not an issue with these robust columns. Columns packed with r...

Reinforced Concrete Columns in Torsion (RESEARCH NOTE).

ACT does not suggest any regulations for columns under torsion. However, by all means, the number of such columns used in steel and concrete structures is abundant. In this paper, using the results of laboratory tests on 35 square and rectangular columns with intermediate slender ratios, relations for determination of torsional strengths of reinforced concrete under axial compression have been ...

Tropospheric NO2 columns

Tropospheric NO2 columns: a comparison between model and retrieved data from GOME measurements A. Lauer1, M. Dameris1, A. Richter2, and J. P. Burrows2 1DLR Institut für Physik der Atmosphäre, Oberpfaffenhofen, D-82234 Wessling, Germany 2Institut für Umweltphysik, Universität Bremen, D-28359 Bremen, Germany Received: 31 October 2001 – Accepted: 23 November 2001 – Published: 13 December 2001 Corr...