The Paleozoic sediments are composed mostly of beds of shales (laminated sediments consisting mostly of particles of clay) and sandstones in which strata of limestone occur in places.
The latter is specified in terms of strata, from 1 to 6, in which strata 1 and 2 group inhabitants with the lowest economic capacity and are therefore granted a property tax exemption, whereas strata 3 6 group property tax payers.
It's not the now defunct Afrikans apartheid but the new version, in which strata of the black population are in conflict.
In addition, we used a time-stratified approach in which strata were defined as the days of week in each calendar month of each year of the study period (1995 2000), or for PM2.5, as the days for which sampling data were available in each calendar month of the study period (i.e., 3-day intervals for 1999 2000).
Whether a gene has propensity to be inactive or not partly depends on which stratum it resides in [5], [6]: it was previously observed that genes on older strata tend to get inactivated, while those on newer strata tend to escape inactivation.
For our stratified sampling, each sector was divided into strata in which every stratum was allocated a population of the total sample size (the percentage used in the sampling has been stated earlier).
First, the basic conditional logistic regression model, in which the stratum matching of cases to controls by age and recruitment centre is taken into account.
Note that no direct comparison of vaccination coverage between cases and controls should be made because of the matching in which each stratum contains a single case.
Because of the matching in which each stratum contains a single case, no direct comparison of vaccination coverage between cases and controls should be made.
Figure 4a shows a single vertical slice of the fused PAT-OCT image data set in which the stratum corneum, epidermis and dermis can be seen in the gray-scale OCT image.
