Aside from the diamond, the ruby, sapphire, emerald, pearl (not, strictly speaking, a gemstone) and opal have also been considered to be precious. Up to the discoveries of bulk amethyst in Brazil in the 19th century, amethyst was considered a precious stone as well, going back to ancient Greece.
A restriction map is a map of known restriction sites within a sequence of DNA. Restriction mapping requires the use of restriction enzymes.In molecular biology, restriction maps are used as a reference to engineer plasmids or other relatively short pieces of DNA, and sometimes for longer genomic DNA.ased on the sizes of the resultant DNA fragments the positions of the sites can be inferred. Restriction mapping is a very useful technique when used for determining the orientation of an insert in a cloning vector, by mapping the position of an off-center restriction site in the insert (Dale, Von Schantz, 2003).
Because it's can help people make a better dicision. Troubleshooting : ORA-4030. If the process is failing at a 4G size, you can assume this 4G limit has been reached due to the limit on map entries. There are two ways to allow the process to access more memory. The default realfree allocator pagesize is 64 KB. By default, 64K map entries of 64KB pagesize can use up to 4GB. With 256KB pages as specified with hidden parameter, the limit goes up to 16GB for 64K map entries.