The phrase "a number of traces" is correct and usable in written English.
It can be used when referring to multiple pieces of evidence or signs that indicate something, often in contexts like research, investigation, or analysis.
Example: "The archaeologists discovered a number of traces of ancient civilization in the excavation site."
Alternatives: "several traces" or "multiple traces".
The proposed design is a low-cost implementation of an I-V tracer capable of producing a number of traces automatically within a fraction of second.
While processing small permutations, the DFALT algorithm is able to sample a number of traces higher than the ones obtained by the other solutions.
We have also observed a number of traces showing the reduction of disulfide bond in CD4D2 without the reduction of CD4D1 (Supporting Information, Figure 12), which might be due to different force dependence.
Among the three proposed solutions, the algorithm SWA is capable of producing a number of traces higher than the ones produced by the other two algorithms when the same time limit is imposed during the processing of big permutations.
The distribution patterns of a number of trace elements are complicated by their participation in oxidation-reduction (electron-exchange) reactions.
The ratio of aqua regia-extractable to total metal contents provides an indication of the general mineralogical host for a number of trace elements.
This paper uses three recently generated southern African satellite burned area products for the month of September 2000 in a sensitivity study of regional biomass burning emissions for a number of trace gases and particulates.
Dynamics of a number of trace gases showed that methane, nitrous oxide, carbon monoxide, and hydrogen gas had initial increases that were substantially reduced in concentration by the end of the experiment.
Thermodynamic modeling and on-site size separation suggested that a number of trace elements (TEs), including alkaline earth elements and several micronutrients (Zn, Ba, Mn, and Ni), decreased the degree of their binding to DOM along the landscape continuum, whereas the majority of insoluble TEs (Al, Fe, Co, Cd, Cu, Pb, REEs, Th, and U) remained complexed with DOM in the LMW<1 kDa fraction.
Results showed that a number of trace element contaminants present in the original CO2 sorbent and gasifier fuel samples were also present in the flue gas from both the CO2 capture and gasification processes, implying that integration of the technologies may result in enhanced contamination in the final gaseous product.
A number of trace elements have been implicated as palaeoredox condition indicators, which include V, Ni, Co, Mo, Mn, Cu and Cr (McManus et al. 1999; Morford et al. 2001; Algeo and Maynard 2004; Harris et al. 2004; Akinlua et al. 2010; MacDonald et al. 2010; Fu et al. 2011).
