Abstract The purpose of this study is to use mathematical and statistical analysis in testing the performance ability standard volume models prediction Gall Oak trees. A sample 205 non - destructive trees was purposely selected from Duhok Governorate, Kurdistan region, Iraq. Of which 157 were used for estimating parameters regression rest (48) served as validation data. Using computer facilitie...

Background. Aggregatibacter actinomycetemcomitans (Aa) plays a vital role in some destructive forms of periodontitis. While mechanical and chemical plaque control is the first step periodontitis treatment, side effects adjunctive agents such as chlorhexidine (CHX) mouthwash have led to application natural alternatives with minimal effects. Therefore, this study evaluated antibacterial effect hy...

Plants fumigated with 40ppbv, 80 ppbv and 120ppbv concentrations of O3 exhibited significant reduction in total chlorophyll content, RuBP carboxylase activity and net photosynthesis. The reduction in total chlorophyll activity ranged from 12 to 36% in Bauhinia variegata, 11 to 35% in Ficus infectoria and 3 to 26% in Pongamia pinnata on fumigation with O3, while the RuBP carboxylase activity was...

This survey investigated the relationship between gall morphology and some fitness components in the asexual generation of Cynips quercusfolii L. (Hymenoptera: Cynipidae). Results showed that larger C. quercusfolii galls were formed on the south side of oak trees Quercus infectoria Olivier (Fagales: Fagaceae). Larval chamber diameter in the gall was similar, but gall diameter and gall wall thic...