... NIST - 2689 ( coal fly ash ) , 113 % ± 5 % for NIST - 1632d ( trace elements in coal ) , 99 % ± 5 % for IAEA - 433 ( trace elements in marine sediments ) , and 93 % ± 2 % for IAEA - 336 ( trace and minor elements in lichens ) ...
... NIST 1632d. identify the appropriate feature variables that should be used for the classification model. Figure 14.9 shows the correlation analysis performed between the TOF mass, LIBS emissions, and volatile content. Figure 14.9a shows ...
Gathers in one place descriptions of NIST's many programs, products, services, and research projects, along with contact names, phone numbers, and e-mail and World Wide Web addresses for further information.
... NIST SRM 1632d direkt untereinander vergleichen. Die APC IL besitzt demnach mit Abstand den höchsten Schwefelgehalt, gefolgt von UF, PITT und dem Referenzstandard NIST SRM 1632d. Die Kohlen POC, UT und WY weisen einen ähnlich niedrigen ...
NIST initially published a Technical Note on this issue in Jan. 1993. This 1994 edition addresses the most important questions raised by recipients concerning some of the points it addressed and some it did not. Illustrations.