In recent years, ground columns, such as vibro-concrete columns and geosynthetic-reinforced stone columns, have been increasingly used to support superstructures and embankments when they are constructed on soft foundations. Several new column technologies have emerged, including different shapes of concrete columns and composite columns. The column technologies have also been combined with oth...

BACKGROUND The ligamentum longitudinale anterius is a broad and strong band of fibrous tissue that runs along the anterior surfaces of the bodies of the vertebrae. AIM The study was undertaken to evaluate the incidence of ossified ligamentum longitudinale anterius in adult dry human vertebra. MATERIALS AND METHODS This study was carried out on 95 sets of dry human vertebral columns irrespec...

Soft clay deposits cause many problems due to low bearing capacity and high deformation. This paper presents the results of laboratory model tests for studying improvement soft clay-bearing using two kinds soil columns, first is slag-cement dust columns second bentonite column. Three from SCC (slag-cement columns) encased by Woven Geotextile are installed beneath a steel plate representing foot...

In this study, FRP jackets were investigated for their confinement effectiveness on rectangular RC columns. Thirteen reduced-scale short columns were tested to failure in axial compression. Variables investigated include: the type of fibers (AFRP, CFRP or GFRP), the thickness of the jacket, the aspect ratio of the rectangular cross section and the radii of the corners. For square columns, GFRP ...

Investigations are currently being conducted at Imperial College into the upward migration of radionuclides from a contaminated water table and their subsequent uptake by plant root systems. This programme includes both experimental studies and related mathematical modelling. Previous work has been primarily with lysimeters. However, these experiments are expensive and somewhat lengthy and the ...

Mid-latitude Tropospheric Ozone Columns from the MOZAIC program: climatology and interannual variability R. M. Zbinden, J.-P. Cammas, V. Thouret, P. Nedelec, F. Karcher, and P. Simon Laboratoire d’Aerologie, UMR5560, Toulouse, France CNRM, Meteo-France, Toulouse, France Received: 21 February 2005 – Accepted: 4 April 2005 – Published: 29 July 2005 Correspondence to: R. M. Zbinden ([email protected]...

Process engineers can be faced with the task of understanding and optimizing the performance of an existing liquid-liquid extraction (extraction) column. Often times, an extraction column has been operating many years, and the performance is not well understood by the personnel responsible for its operation. Since this technology is not treated comprehensively during most under-graduate Chemica...