Although the 266 nm laser is known to reduce fractionation compared with an infrared laser (1064 nm wavelength), the fractionation still remained considerable compared with shorter-wavelength laser systems (Gonzalez et al. 2002, Jochum et al. 2007).
During one analytical session we checked that Cu and Zn fractionation factors remained constant.
Assuming that the elements driving tandem duplications are still present after fractionation, the remaining duplicates may in turn expand.
However, even if isolated by density-gradient fractionation, they remain a heterogeneous mixture of cells with varying proliferation and differentiation potentials.
Upon verification of expected fractionation, the remaining portions of the samples were utilized to identify loop-enriched and matrix/scaffold-attached fragments along the chromosomes.
The control immunoassays confirmed good quality of the fractions prepared, because SHMT was localized exclusively in the soluble fraction, whereas the remaining fractionation markers were in the fractions enriched in membranes.
In multivariate analysis (Table 6), bra cup size ≥ D, BMI, fractionation and hormone therapy remained statistically significant.
The appropriate dose of radiation and the optimal fractionation scheme, however, remain controversial.
A factorial experimental design was used to study and quantify the effect of the variables (formic acid concentration (80 90%), hydrogen peroxide concentration (0.2 0.4%), temperature of the first stage (60 80 °C), and treatment time of the second stage (60 120 min)) on the main parameters of fractionation: pulp yield, remaining lignin and total polysaccharides in pulp.
(2003) used a water soluble NH4OAC exchange, carbonate (NH4OAC (pH 5), Fe-oxide (NH2OH, HCl, pH 2, 80 100°C), organic (NaOH 80 100°C), and residue (remaining) fractionation scheme.
