Assessment of water stability and water quality status of urban Patna (Bihar), India

Abstract

Gearbox fault diagnosis is one of the most important parts in any industrial systems. Failure of components inside gearbox can lead to a catastrophic failure, uneven breakdown, and financial losses in industrial organization. In that case intelligent maintenance of the gearbox comes into context. This paper presents an integrated gearbox fault diagnosis approach which can easily deploy in online condition monitoring. This work introduces a nonparametric data preprocessing technique i.e., calculus enhanced energy operator (CEEO) to preserve the characteristics frequencies in the noisy and inferred vibrational signal. A set of time domain and spectral domain features are calculated from the raw and CEEO vibration signal and inputted to the multiclass support vector machine (MCSVM) to diagnose the faults on the system. An effective comparison between raw signal and CEEO signal are presented to show the impact of CEEO in gearbox fault diagnosis. The obtained results of this work look very promising and can be implemented in any type of industrial system due to its nonparametric nature.

Genetic diversity and genome-scale population structure of wild Indian major carp, Labeo catla (Hamilton, 1822), revealed by genotyping-by-sequencing

“…Loss of allelic heterozygosity in our sampling sites may be due to habitat loss and fragmentation that led to inbreeding and selection (Malini and Rao, 2004;Jadhav et al, 2011;Kumar et al, 2020;Das et al, 2021). Another possible explanation for the absence of considerable allelic heterogeneity in the catla population may be the "stepping stone model of migration" (Felsenstein, 1997), which links effective gene flow to gene exchange among neighboring populations (Kumar et al, 2014;Das et al, 2021).…”

“…2020) along with air and water pollution due to rampant sand mining and brick kilns. Recently, a report on the shifting of the Ganga River by an average of 0.14 km per year from the city of Patna has alerted environmentalists to focus on its associated flora and fauna (Kumar et al, 2014).…”