In chemistry, a primary standard is a reagent that is very pure, representative of the number ofmolesthe substance contains, and easily weighed. A reagent is a chemical used to cause a chemical reaction with another substance. Often, reagents are used to test for the presence or quantity of ...
10. Chemistry a. Relating to, or having a carbon atom that is attached to only one other carbon atom in a molecule. b. Relating to the replacement of only one of several atoms or groups in a compound, such as an amine in which one valence of the functional group is taken by a ca...
A reference standard, or reference material, is prepared for use as the standard in an assay, identification, or purity test. It should have a quality appropriate to its use. It is often characterized and evaluated for its intended purpose by additional procedures other than those used in routi...
Phonetic (Standard)IPA adjective first or highest in rank or importance; chief; principal: his primary goals in life. Synonyms:prime,main Antonyms:last first in order in any series, sequence, etc. Antonyms:final,last first in time; earliest; primitive. ...
STANDARDIZATIONUNCERTAINTYIn the original publication, the value "2.611·104 Bq g1" in the sentence "The measured massic activity of 233Pa at the reference time was 2.611·104 Bq g1 with a combined standard uncertainty of 0.93%." under the heading "HPGe detector activity determination" should ...
This contribution deals with a qualitative and quantitative discussion of the uncertainty of force generated by the 2 MN dead weight primary force standard (KNME 2 MN) of the ASMW and with the application of tension force transfer standards developed in the ASMW laboratory for force measurements....
In subject area:Chemistry Add to Mendeley Discover other topics Chapters and Articles You might find these chapters and articles relevant to this topic. N-HETEROAROMATIC COMPOUNDS (MONO-AZINES) A.I.SCOTT, inInterpretation of the Ultraviolet Spectra of Natural Products, 1964 ...
principles enumerated in the “A Guide to the Care & Use of Laboratory Animals” prepared by the Committee on Care & Use of Laboratory Animals of the Institute of Laboratory Animal Resources (ILAR), National Research Council (NRC) (International Standard Book, Number 0–309-05,377–3, 1996)...
Error bars show mean +/− standard deviation, p-values from two-tailed t tests. Source data Extended Data Fig. 4 Healthy tissue TCA fluxes. (a) Oxygen consumption calculated from TCA fluxes measured in this study correlates well to literature tissue slice oxygen consumption data (Martin & ...
Biochemical investigations demonstrated that XOL-1 does not bind ATP under standard conditions, suggesting that XOL-1 acts by a mechanism distinct from that of other GHMP kinases. In addition, we have cloned a XOL-1 ortholog from Caenorhabditis briggsae, a related nematode that diverged from C...