Most of the time, though, LDAP is used to search for information in the directory. The LDAP search operation allows some portion of the directory to be searched for entries that match some criteria specified by a search filter.
It has good low temperature flexibility and is superior to most elastomers in compression set, cold flow and abrasion resistance. However, it does not possess good resistance to ozone, sunlight or weather. Buna-N has a temperature range of -40 to+135 C (-40 to 275 F).
Held and Harder [32] investigated the thermal performance of SCBA models available. in 1980, which were exposed to a variety of temperature extremes in an oven up to 250 Â°C. (482 Â°F), a propane flame at 1050 Â°C (1922 Â°F) for 10 s, and a natural gas flame at 1000 Â°C.