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The cross section of the 51 V n , p 51 Ti reaction was measured at 7.87, 13.05 and 16.98 MeV neutron energies using the activation technique and offline γ -ray spectrometry. Vanadium targets were activated along with Al monitor foil to measure the cross section relative to the standard 27 Al n , α 24 Na reference reaction. The quasi-monoenergetic neutron beams were produced via the 7 Li p , n reaction at the 14UD BARC-TIFR Pelletron Facility, Mumbai, India. Statistical nuclear reaction Talys (ver. 1.9) code was used for the theoretical estimations of the 51 V n , p 51 Ti reaction cross section. Additionally, the effects of different input parameters were considered in present work to reproduction of the experimental data more accurately. The experimental data of the present measurements were discussed and compared with the previous measurements taken from the EXFOR compilation and latest evaluations of the ENDF/B-VIII.0, JENDL/AD-2017 and TENDL-2019 libraries. The covariance method was used to estimate the magnitudes of the uncertainties in the present cross section measurements. Furthermore, the different systematic formulae at 14–15 MeV energies were used to calculate the n , p , n , 2 n and n , α reactions cross section for structural material vanadium. The calculated cross sections from the formulae were discussed and compared with the available experimental data. [ABSTRACT FROM AUTHOR]

We describe the diversified National Ambient Noise Monitoring Network (NANMN) set up across 7 major cities of India and covering 70 stations for continuous noise monitoring throughout the year. The annual average Lday (06-22 h) and Lnight (22-06 h) values observed in 2015 for these 70 locations are described. Of these, 25 locations are in commercial zones, 12 in industrial, 16 in residential and 17 in silence zones. Each city has 10 noise monitoring stations installed for analysing environmental noise pollution levels round the clock (24 × 365 h). The long-term noise monitoring shows that ambient noise levels are very high compared to the recommended standards for some sites and thus noise abatement measures are essentially required for controlling these levels. The present study is focused on evaluation, analysis and reporting of environmental noise pollution in seven major cities of India and is instrumental in planning for the noise abatement measures for controlling noise pollution in these cities. Such a noise monitoring network established in India is unique and one of the largest noise monitoring networks of its kind across the globe. [ABSTRACT FROM AUTHOR]