Interdroplet interaction effects are presented in terms of droplet mass vaporization rate, droplet lifetime, and flame-sheet shape and position for different droplet spacings and fuels.
Increasing the thickness of the poison sheet extends the lifetime but would sacrifice the neutronic performance of the moderators.
It thus brings a serious challenge to the lifetime of the moderator poison sheets.
A compromise is accepted at the current SNS target system which uses thick Gd poison sheets at a projected lifetime of 6 MW-years of operation.
Forging tools are often showing short lifetimes compared to cold forming tools e.g. for sheet metal forming.
MIKE HOLLAND: That's a really important point because both governments and companies, ironically, come into this recession as liquid and as strong on the balance sheets as in any recession in our lifetime.
Below him, a table covered with CD's, sheet music, books and pamphlets gave testament to a lifetime devoted to educating the masses.
The investigators reviewed the entire Mayo medical record (including the master sheet listing all diagnoses for the patient throughout his/her lifetime) for each control.
Nanotubes are already sprinkled in more than half of lithium ion batteries: their ability to carry electricity hastens recharging, and they act like tiny springs to hold apart the sheets of graphite in the battery, extending its lifetime.
However, the employment of such sheet materials leads to intense wear and thus reduces the lifetime of forming tools.
