A number of issues such as superlattice based grading in the base region, base resistance vs base region grading, the emitter base junction design, tradeoffs between base region grading and the nonuniform doping of the base region, and the surface recombination at the external base region, have been articulated.
Attention has been paid to parameters such as doping in the base region, base resistance versus doping dependent base region grading, the emitter base junction design, and the recombination at the external base region.
The stripe wear zones showed grain pullout regions (grade 5 wear).
Responses were differentiated between pilot schools (N questionnaires=12,743) and control schools (N questionnaires=2,527), and also between regions, grade and gender.
The phase 1 stratification (by gender, region and grade) was done by proportional allocation and the number of classes needed was calculated for each gender, region and grade which resulted in an equal probability sample.
The data were weighted by age, gender, region, social grade and working status to the known profile of the UK population aged 16-75.
aAdjusted for age, year, stage at diagnosis, race/ethnicity, SEER region, tumor grade, histology, and radiation therapy.
One hundred and forty-three sampling points were selected from across England, Wales and Scotland using a sampling frame stratified by government office region, social grade and rural/urban location.
We assumed that industry, the proportion of blue collar workers, age of the company, geographical region and grade of urbanisation of the area could all be related to the economic performance and to the expenditure of OHS.
*HRs adjusted for age, gender, geographic region, histologic grade, primary tumor stage, and lymph node metastatsis In addition, we also conducted analyses by further adjusting for post-surgical treatment.
