It became apparent that for a given density
and hardness a combination of low TDI indexes and high polymer solids was desirable for obtaining improvements in durability.
Astronomers set their sights on clusters of galaxies to estimate the total density
of matter in the cosmos, including exotic kinds of matter that would reveal their presence only through their gravitational influence.
Major factors controlling closed cell sponge density
and expansion are:
3] apparent density
was first studied as a function of blowing agent composition, that is, iso- and n-pentane.
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Either we can accede to the astronomers and say, `Yes, there's only 20 to 30 percent of the critical density
available' [hence the universe cannot be flat], or we can ask whether there can be other forms of matter or energy which could make up the difference.
The chemical foaming process is typically limited to a density
reduction of 15 to 25%.
com/research/7t8kvg/polyethylene) has announced the addition of the "Polyethylene Linear Low Density
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A real density
(or bit density
), the amount of data that can be stored in one square inch of surface area of recording media, has become the most significant factor in the rapid evolution of magnetic storage technologies.
Trademarked PET+, the trays range in density
Through early adulthood, people continually add calcium and strength to their bones, which reach a peak density
around age 35.
The previously presented kinetics of network density
measurement could also be used to calculate heat resistance index (ref.