The control of CRP weighting obtained with Log(CRP) in the formula Log(CRP /ALB appears promising in current clinical practice, since it involves the most often used serum proteins to assess inflammatory and nutritional status.
In order to deal with zero values, the total AHI, REM AHI, and NREM AHI were log transformed using the formula AHI = log(AHI + 0.01).
Cell growth was measured by calculation of accumulated population doublings using the formula (log H − log S / log 2, where log H is the logarithm of the number of cells harvested and log S is the logarithm of the number of cells seeded on the first day of each passage, as described in [ 11].
The order of convergence may be obtained by using the formula log ( e h 1 ) − log ( e h 2 ) log ( h 1 ) − log ( h 2 ), (8.7).
Thus, using the cell number obtained at each passage of a culture seeded with a known cell density, and applying the formula log N = log N0 + nlog2, it was possible to calculate the number of cells that would have been obtained if all cells were reseeded at a lower density at each passage.
In the specific case of a physical interaction between two proteins, and log-transformed data, the formula above corresponds to the law of mass action, as follows.
To achieve approximate normality, the AHI and not normally distributed HOMA values were log-transformed prior to analysis according to the formula log(x+1).
Applying the formula: log [LD50 (mg mL−1)] = 0.372 × log IC50 (μg mL−1) +2.024 [ 16, 17], the value of the LD50 was calculated in order to orientate the in vivo experimental assays.
The value of the LD50 (Lethal Dose to kill 50% of animals) essential for the controlled use of animals in tests in vivo, was determined from the barks of D. alata hydroalcoholic extract where inhibitory concentration 50%, the concentration required for 50% inhibition (IC50 = 0.164 μg mL-1), using the formula: log (LD50 [mg mL-1]) = 0.372 × log IC50 (μg mL-1) + 2.024 [ 17].
Cumulative PDs were calculated using the formula "3.32 (log Xe – log Xb) + S" in which Xb is the inoculum cell number, Xe the cell harvest number at the end of the incubation time, and S is the starting PD.
The counts were expressed as log CFU/cm2 by using the formula CFU/cm2 = No of colonies × level of serial dilution × factor bringing plated vol. to 1 ml as described by Adetunji and Odetokun [2].
