This investigation included field procedures such as drilling boreholes and taking soil samples, measuring the soil moisture content, soil suction, and also excavating trenches to observe the distribution of tree roots under the ground.
The analysis shows that the rate of potential transpiration increases the soil matric suction and ground settlement, while the potential transpiration rate has an insignificant effect on the distribution of soil suction.
Suction at the wilting point increases the soil matric suction and ground settlement, whereas the saturation permeability decreases the maximum soil matric suction generated.
Straightline Aviation said the LMH-1's air-cushion landing system, which allows the dirigible to grip the ground like a suction cup, was a particular draw.
To verify the model, the soil moisture content and suction profiles measured on site were compared to the predicted values, and profiles of ground settlement and lateral movement adjacent to the tree are presented and interpreted.
We collected spiders from aerial [ 17] traps from two locations (wheat and grass fields respectively) near the Seale-Hayne Field Station, Devon, UK and compared endosymbiont infection frequencies in these spiders with those obtained from suction samples of the ground population at the same locations.
Maximum soil displacement was predicted to be about 80 mm at the ground surface, due to a total change in suction from 2000 to 38 kPa.
Instead of wheeled landing gear, he chose air-cushioned feet, like those on a hovercraft, so that the ship could land on virtually any surface, and he installed reversible fans in the feet, which would provide suction and allow the ship to stay on the ground.
A significant amount of blood was seen in the patient's mouth on intubation, and suctioning through a nasogastric tube yielded '200 mL of coffee ground contents.' An extensive workup was done in an attempt to discern the etiology of his hemorrhagic lung disease.
Sometimes "suction vortices" can be seen within the tornado core at its point of contact with the ground.
