Previous studies revealed that probability graphs of element concentrations are good indicators of sources (Reimann et al. 2005).
In an alternative approach, we constructed multipollutant models where indicators of sources were used instead of source-specific masses, and thus sources were allowed to correlate.
This does not directly imply that these pollutants per se are responsible for the health effects, but they may be important indicators of sources relevant to the PM2.5 effects on CVD outcomes.
Alkyl naphthalenes and tetralins have the potential to be useful indicators of source organic matter and source rock lithology of biodegraded and highly mature oils.
Thus, the remaining 88 abstracts contained at least one 10-word string of text-matching without attribution, meaning without quotation marks, references, or other indicators of source material.
"Ordinary, everyday expressions are repeatedly denied trademark status because they are informational phrases rather than indicators of source, and thus such expressions remain free for all to use," Pintrips' lawyers write.
We chose building density rather than population density as an indicator of source activity suitable for both residential and commercial areas of the city.
The only other covariate included in models was a binary indicator of source of height measurement (questionnaire versus measured by ALSPAC clinic staff or health visitors).
TOM was characterized using lignin biomarkers as indicators of TOM sources and state of degradation.
The REE are classically applied analytes for investigating depositional environments and inferring geochemical processes, making them of interest as potential, naturally occurring indicators of fluid sources as well as indicators of geochemical processes in solid waste disposal.
The variation patterns of coliforms, Escherichia coli, enterococci and Clostridium perfringens concentrations were assessed in manually collected grab samples together with those of phosphorus, nitrogen, solids, and readings of pH, turbidity, water conductivity, temperature and flow rates to examine whether these constituents could serve as potential indicators of bacteria sources.
