Transport of BTEX Vapours Through Granular Soils with Different Moisture Contents in the Vadose Zone

2009 ◽  
Vol 28 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Panagiotis C. Nerantzis ◽  
Mark R. Dyer
Keyword(s):  
Vadose Zone ◽  
Granular Soils ◽  
Moisture Contents

Estimating moisture contents in the vadose zone using cross-borehole ground penetrating radar: A study of accuracy and repeatability

2002 ◽  
Vol 38 (12) ◽  
pp. 45-1-45-12 ◽  
Author(s):  
David Alumbaugh ◽  
Ping Yu Chang ◽  
Lee Paprocki ◽  
James R. Brainard ◽  
Robert J. Glass ◽  
...  
Keyword(s):  
Vadose Zone ◽  
Ground Penetrating Radar ◽  
Moisture Contents ◽  
Ground Penetrating ◽  
Accuracy And Repeatability

A Note on Friction Ratio

1975 ◽  
Vol 12 (4) ◽  
pp. 524-526
Author(s):  
Umesh Dayal ◽  
J. H. Allen
Keyword(s):  
Constant Velocity ◽  
Maximum Velocity ◽  
Granular Soils ◽  
Cohesive Soils ◽  
Moisture Contents ◽  
Different Types ◽  
Side Friction ◽  
Penetration Tests ◽  
Local Side ◽  
Penetration Velocity

Constant velocity penetration tests were conducted on the different types of soils ranging from gravelly sand through clay of various strengths and moisture contents. The tests were performed for various penetration velocities up to a maximum of 2.66 f.p.s. (81.14 cm/s). From the measured cone pressure and local side friction (sleeve friction), the friction ratio is calculated at various penetration velocities. The experimental results indicate that for granular soils the influence of penetration velocity on friction ratio is insignificant. In cohesive soils the increase in penetration velocity causes an increase in friction ratio which amounted to 80% at the maximum velocity used.

Methods of Determining in Situ Oxygen Profiles in the Vadose Zone of Granular Soils

2009 ◽  
pp. 271-271-18
Author(s):  
DJ DeGroot ◽  
AJ Lutenegger ◽  
JG Panton ◽  
DW Ostendorf ◽  
SJ Pollock
Keyword(s):  
Vadose Zone ◽  
Granular Soils ◽  
Oxygen Profiles

The Smoulder Stream of Cigarettes / Zur Kenntnis des Glimmstromes von Cigaretten

1965 ◽  
Vol 3 (2) ◽  
Author(s):  
F. Seehofer ◽  
W. Schulz
Keyword(s):  
Moisture Content ◽  
Spatial Position ◽  
High Yield ◽  
Physical Conditions ◽  
Moisture Contents ◽  
Cigarette Paper ◽  
First Time

AbstractThe phenomenon of the smoulder stream flowing through the cigarette during smouldering and during the puff intervals is demonstrated for the first time and its dependence upon physical conditions is examined. The volume of the smoulder stream can amount up to 180 ml per cigarette. Increasing draw resistance of the cigarette and augmenting moisture content of the tobacco as well as perforation of the cigarette paper have a decreasing effect on volume and velocity of the smoulder stream. The porosity of the cigarette paper has no perceptible influence. The spatial position of the cigarette affects volume and velocity of the smoulder stream. The influence exercised by the smoulder stream on the yields of total condensate, nicotine, phenols, aldehydes, and acroleine when the cigarette tip is open during the puff intervals is determined. When the moisture contents of the tobacco were extremely high, yield decreases reaching 50 % could be observed.

Conception of vadose zone research in the area of Goczałkowice reservoir.

2013 ◽  
Vol 2 (1) ◽  
pp. 22-26
Author(s):  
Joanna Czekaj ◽  
Kamil Trepka
Keyword(s):  
Vadose Zone ◽  
Unsaturated Zone ◽  
Vertical Profile ◽  
Structural Model ◽  
Historical Data ◽  
Integrated System ◽  
Nitrate Transport ◽  
Strategic Research ◽  
Research Site ◽  
Observation Wells

Abstract Goczałkowice reservoir is one of the main source of drinking water for Upper Silesia Region. In reference to Water Frame Directive matter since 2010 the strategic research project: „Integrated system supporting management and protection of dammed reservoir (ZiZoZap)”, which is being conducted on Goczałkowice reservoir, has been pursued. In the framework of this project complex groundwater monitoring is carried on. One aspect is vadose zone research, conducted to obtain information about changes in chemical composition of infiltrating water and mass transport within this zone. Based on historical data and the structural model of direct catchment of Goczałkowice reservoir location of the vadose zone research site was selected. At the end of November 2012 specially designed lysimeter was installed with 10 MacroRhizon samplers at each lithological variation in unsaturated zone. This lysimeter, together with nested observation wells, located in the direct proximity, create the vadose zone research site which main aim is specifying the amount of nitrate transport in the vertical profile.

Sign in / Sign up

Export Citation Format

Share Document