Niphates digitalis name, the colour has been observed as blue, gray, and lavender, as well as "purplish to pink". The surface is coarse and porous with 6-mm-long conules or spines. Compounds extracted from the pink vase sponge have been investigated for their possible use in the treatment of castration recurrent prostate cancer. A common reagent used in organic chemistry 1,8-diazabicycloundec-7-ene can be isolated from this sponge. Niphates digitalis Niphates digitalis, the pink vase sponge, is a species of demosponge belonging to the Niphatidae family. It is native to the Florida Keys, The Bahamas, and the Caribbean including the Netherlands Antilles. The species
Derive (computer algebra system) calculators. Derive (computer algebra system) Derive was a computer algebra system, developed as a successor to muMATH by the Soft Warehouse in Honolulu, Hawaii, now owned by Texas Instruments. Derive was implemented in , also by Soft Warehouse. The first release was in 1988 for DOS. It was discontinued on June 29, 2007 in favor of the TI-Nspire CAS. The last and final version is Derive 6.1 for Windows. Since Derive required comparably little memory, it was suitable for use on older and smaller machines. It was available for the DOS and Windows platforms and was used also in TI