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).
In general,the normal BUN level ranges from 7 to 20mg/dL(2.5 to 7.1mmol/L).However, the normal BUN levels may vary with the lab, and your age. Urea nitrogen levels tend to increase with age. Infants have lower levels than other people do, and the range in children varies.