Globally, cities are the source of over 70 percent of the world's greenhouse gas emissions. Cities are also the engines of the global economy, concentrating more than half the world’s population, and they are where the middle class is rapidly expanding. Indeed, by the year 2050, two-thirds of...

Globally, cities are the source of over 70 percent of the world's greenhouse gas emissions. Cities are also the engines of the global economy, concentrating more than half the world's population, and they are where the middle class is rapidly expanding. Indeed, by the year 2050, two-thirds of...

In the present work spectroscopic properties of Praseodymium (Pr3 ) ion with varying concentrations are studied in borax glasses. Ultraviolet Visible Spectroscopy (UV-VIS) absorption spectra of Pr3 ion doped borax glasses have revealed four absorption bands. The oscillator strength values for...

Developing Countries Have Different Transportation Issues and Requirements Than Developed Countries An efficient transportation system is critical for a country's development. Yet cities in developing countries are typically characterized by high-density urban areas and poor public transport, as...

Urban transportation is viewed as the second leading source of carbon dioxide (CO2) emissions. The growing number of vehicles and road infrastructure-based supply in Indian cities is viewed as the essential driver of climate change and relevant consequences affecting the sustainability of...

In this research work, we synthesized novel zinc aluminate (Zn 1-x Eu x Al 2-y O 4 Sr y ) sky bluish phosphors at 500 o C via combustion route method, and for better crystallinity we were annealed in condensing envelope with 85% of N 2 and 15% of H 2 at 1200 °C. The spinel cubic phase,...