"direct concentration" is correct and usable in written English.
You can use it to refer to when someone is focusing their energy and concentration on a specific task or subject. For example, "He put his direct concentration into finding a solution to the problem."
Direct concentration of o-aryldiamines and aldehydes is not a good synthetic reaction, as it is well known to yield a complex combination, being 1,2-disubstituted benzimidazoles [5].
Comparison of the resistivity-based moment estimates to those obtained from direct concentration sampling suggests that for cases with good quality resistivity data (i.e., <3% noise), the imaging results provide more accurate moments until 6 10 multi-level sampling wells are installed.
Phages were isolated following culture enrichment or direct concentration methods.
The direct concentration method was modified from a technique kindly provided by R. Hendrix, University of Pittsburgh (personal communication).
In insects such as Drosophila, Wolbachia germline localization requires a direct concentration at the embryonic pole cells, the germline precursors.
ECT and TT measurements were then converted into direct concentration units of argatroban (μg/ml) using the same calibration curve (Hyphen, Biomed, Neuville, France).
The results show that the effects of the alkaloids were direct, concentration-dependent and did not depend on time.
The assay for 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity indicated that EGCG had a direct, concentration-dependent antioxidant activity.
CM_128 was found to inhibit ICRAC in a direct concentration-dependent manner, with IC50 at approximately 0.1 μmol/L and no loss of effect at high concentrations (10 μmol/L).
These variables represent the differential state of each entity in comparison with a 'control' or normal level rather than the direct concentrations of the molecular entities.
For Ca2+ an opposite directed concentration gradient exists.
