After reading this article you will learn about the UV-B radiation and the evolution of Polyphenolics. Solar UV-B radiation is known to stimulate the enzymes phenylalanine amonialyase (PAL) and chalcone synthase (CHS) and other branch-point enzymes of the phenylpropanoid pathway (Fig. 17.3). PAL catalyzes the transformation of phenylalanine into transcinnamic acid, which may eventually lead to the formation of complex [...]
After reading this article you will learn about:- 1. Introduction to Wastewater Treatment 2. Problem Statement of Wastewater Treatment 3. Treatment Technology 4. Treated Wastewater Reuse. Introduction to Waste Water Treatment: According to the World Bank, "the greatest challenge in the water and sanitation sector over few decades will be the implementation of low cost sewage treatment that will at [...]
Get the Answer of: Do Ozone Holes Form Over the Arctic? (a) The stratospheric temperatures are seldom below—80°C due to frequent exchange of air masses with the mid-latitudes; (b) The Arctic air vortex usually dissipates in late winter before sunlight returns to initiate the ozone destruction. The differences between the two regions result in part from the larger land mass [...]