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Due to urban growth of Hyderabad city it is observed large scale encroachments have taken place which led to disappearance of lakes, which are replaced by illegal construction of multi-storied buildings by the business magnets and private agencies which led to a negative impact on the natural environment at the cost of cynic beauty, illegal money transaction, increase in crime rate, decreasing health conditions at the young age, decrease in the fertility rate and mental imbalance and depression. It is advised that the mega city of Hyderabad should prepare for the natural calamities, also social, economical and ecological problems to improve a quality of life of human beings. [ABSTRACT FROM AUTHOR]

Plants fumigated with 40ppbv, 80ppbv 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 reduced by 10 to 32% in Bauhinia variegata, 10 to 23% in Ficus infectoria and 9 to 15% in Pongamia pinnata. The net photosynthesis was also reduced by 6 to 26% in B. variegata, 16 to 39% in F. infectoria and 7 to 31% in P. pinnata on fumigation with 03. The relative higher sensitivity of tropical trees to O3 suggests that the ambient air quality standards in tropical tree areas need to be stringent to prevent vegetation from air pollution.

Recognizing that continuous quality improvement will be imperative for success in the future, six visiting nurse associations of northwestern Pennsylvania used benchmarking as a tool to improve their respective agencies' performance. The agencies benchmarked three areas: continuity of care, patient rehospitalization, and nosocomial infection rate.