The phrase "air basis" is not correct and does not convey a clear meaning in written English.
It is unclear when to use it, as it does not appear to be a standard expression or term.
Example: "The project will be evaluated on an air basis" does not make sense.
Alternatives: "on a regular basis" or "on a consistent basis."
The widely-used index are: air dried basis (({text{ad}})), dry basis (({text{d}})), dry ash-free basis (({text{daf}})).
The result (on air dry basis) is presented in Table 1.
Figure 6 shows the relationship between air dried basis moisture ((M_{{rm ad}})) and vitrinite reflectance ((R_{{rm o,max}})).
Table 1 Proximate analysis (air dry basis) of non coking-coal sample A ad M ad V ad FCad 34.6 1.34.6.2 34.6.
The moisture was determined using air dried basis on weight percent, expressed in (M_{{rm ad}}) with the value equal to inherent moisture.
The Moisture and Fixed carbon use the air dried basis index, as the index employed by different articles that are different with this paper, we adopted the Eqs.
Proximate analysis of coal on air dry basis was carried out using TGA-1000 iNAVASment (NAVAS, USA) as per ASTM D7582-10 procedure.
Figure 8 shows the relationship between air dried basis Fixed carbon and vitrinite reflectance: Fc_{{rm ad}} = k_{{rm Fcad}} exp (c_{{rm Fcad}} R_{{rm o,max}} ) + b_{{rm Fcad}} (25 where, (Fc_{{rm ad}}) is air dried basis fixed carbon, %; (k_{{rm Fcad}}), (c_{{rm Fcad}}), (b_{{rm Fcad}}) are coefficients of Eq. (25),and (c_{{rm Fcad}} < 0), (k_{{rm Fcad}} < 0).
Treatments included two levels of dietary F C (40 60 vs. 60 40, on an air dry basis) and APG (no APG vs. 6.5 g APG per day per animal).
where, M = concentration of metal in the solid waste/soil, air dried basis (mg/kg), C = concentration of metal in the digest (mg/l), B = concentration of metal in the blank (mg/l), W = weight of air dried solid waste and soil sample digested (g).
