http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Ultrasonic measurement of porous medium in an aqueous environment
viii, 52 leaves : illustrations ; 28 cm.
22.5 cm in depth. Other work has shown that ultrasonics
analyzer with the known porosities of the sponges. Results
as a measuring tool for determining the physical
be used to determine physical characteristics such as
characteristics of soft porous media in an turbid aqueous
could effectively be used in metals and other materials with
could not "see" harder materials such as metal, sand or hard
demonstrated that the ultrasonic device was effective in
developed by comparing the 2-D images produced by the image
environment. Three different sponge types were used as the
essentially zero visibility. Furthermore, the device could
limitations of the ultrasonic scanning device were that it
locating soft objects in an aqueous environment with
physical dimensions and porosities in objects where the pores
proper design considerations and they could also be designed
rubbers and it does not have the ability to scan deeper than
soft objects. A method for determining porosities was
The use of a medical ultrasonic scanning device was studied
were larger than one millimeter in diameter. The major
Issued also on microfiche from Lange Micrographics.