Iowa Motor Fuel Tax Monthly Reports, January 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, February 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, March 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, April 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, May 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, June 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, July 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, August 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, September 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, October 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, November 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Nuclear well logging in soils. Calibration of slim hole nuclear tools gamma-gamma and neutron-thermal neutron.

The calculation of elasticity parameters by sonic and ultra sonic wave propagation in saturated soils using Biot's theory needs the following variables : forpiation density and porosity (p, ø), compressional and shear wave velocities (Vp, Vs), fluid density, viscosity and compressibility (Pfi Ilfi Ki), matrix density and compressibility (p" K), The first four parameters can be determined in situ using logging probes. Because fluid and matrix characteristics are not modified during core extraction, they can be obtained through laboratory measurements. All parameters necessitate precise calibrations in various environments and for specific range of values encountered in soils. The slim diameter of boreholes in shallow geophysics and the high cost of petroleum equipment demand the use of specific probes, which usually only give qualitative results. The measurement 'of density is done with a gamma-gamma probe and the measurement of hydrogen index, in relation to porosity, by a neutron probe. The first step of this work has been carried out in synthetic formations in the laboratory using homogeneous media of known density and porosity. To establish borehole corrections different casings have been used. Finally a comparison between laboratory and in situ data in cored holes of known geometry and casing has been performed.

Iowa Motor Fuel Tax Monthly Reports, November 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, December 2006

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.

Iowa Motor Fuel Tax Monthly Reports, January 2007

The monthly fuel tax report from Iowa Department of Transportation to the Iowa Department of Revenue and Finance.