Papers by Monikandon Sukumaran
Revista de Chimie
The COVID-19 pandemic has shoved most of the countries to implement restrictions for transportati... more The COVID-19 pandemic has shoved most of the countries to implement restrictions for transportation and all other social activities to minimize spread of disease to the people. India is the second most populated country in the world which has implemented a historical complete lockdown throughout the country from the last week of March to April 2020 with an extension up to the first week of May 2020. This lockdown has slowed down the pollution levels in most of the cities in India within the first few weeks of the lockdown. In this view, the present study discusses the air quality scenario of Chennai, one of the megacities of India, scientifically. With the aid of air quality data of the Tamil Nadu Pollution Control Board, India, for five parameters such as PM 2.5 and P.M 10, sulphur dioxide, nitrogen dioxide and air quality index, the authors correlated the pre-during-post lockdown air quality of Adyar, Chennai. The results indicated that the concentrations of particulate matter red...
Material Science Research India
This paper describes the analysis of scaffold frame intersection joint crack. Independent scaffol... more This paper describes the analysis of scaffold frame intersection joint crack. Independent scaffolding type is selected and analyzed for the cracks and deformations. The modelling of the structure is done with the Solid works software and the rendered model was imported to ADINA structures software. All the dimensions for the scaffold design were followed as specified in the standard codes BS4945. Live loads of 2kN/sq.m were taken. The post processing is executed and the results were generated. The results show that maximum bending moment 11.94N-m is at intersection joints particularly at joints. The minimum bending moment -13.44N–m has occurred below the junction the effective stress calculated around the junction of the scaffold is 3.493N/mm2 and the deformation of the scaffolding frame is at intersection joints and the cracks are formed. Visualizing the crack by using ADINA may be the best way to estimate the deformation modes and crack. This will definitely be useful for the reme...
Material Science Research India
Steel corrosion inhibition in acidic and alkaline medium by ethanolic extract of Milletia pinnata... more Steel corrosion inhibition in acidic and alkaline medium by ethanolic extract of Milletia pinnata is described in this study. The inhibitive behavior of the inhibitor is evaluated by weight loss measurements, adsorption isotherms, and thermochemical parameters. The inhibitor exhibited a maximum of 87% and 90.5% inhibition efficiency against steel corrosion in 0.5 M NaOH and 1.0 M H 2 SO 4 , respectively. The weight loss linearly fit to Langmuir adsorption isotherm with correlation coefficient value close to unity. The thermochemical parameters indicated for predominant physical adsorption of the inhibitor molecules on the steel surface.
Oriental Journal of Chemistry, 2016
For the first time, the homogeneous adsorption of ethanolic extract of Jacaranda mimosifolia gree... more For the first time, the homogeneous adsorption of ethanolic extract of Jacaranda mimosifolia green inhibitor is evaluated for inhibition of steel corrosion in acid environment. The inhibitive properties are evaluated by means of weight loss measurements, polarization studies, and electrochemical impedance spectroscopy. A maximum of 96% of inhibition efficiency is achieved by using 500 ppm of the green inhibitor. The mechanism and nature of adsorption of inhibitor on the surface of steel are evidenced by Langmuir adsorption isotherm and energy dispersive X-ray spectral elemental mapping.
Current World Environment, 2016
Principal component analysis is a unique technique for reducing the dimensionality of the data. I... more Principal component analysis is a unique technique for reducing the dimensionality of the data. In this study, ten water quality parameters of the river Kaveri observed at five different stations of Tiruchirappalli for six years were collected and subjected to principal component analysis. A computational program was prepared in order to process and understand the data as a cluster. At first necessary data for compiling the program were listed and then fed to the program. Then the outputs were analyzed and possible linear and non-linear relationships between the water quality parameters and the timeline. It is understood that biological oxygen demand and fecal coli had a linear relationship. Further, the results suggested for group of factors that influence the water quality in a particular year.
Groundwater quality analysis was carried out in the Varahanadi basin. In the last few years, grou... more Groundwater quality analysis was carried out in the Varahanadi basin. In the last few years, groundwater has become one of the main sources of irrigation in this area, supplementing the canal surface irrigation system. In the tail end villages of Puducherry, groundwater is the only source of irrigation. Groundwater samples collected from sixteen villages were analysed for various physico-chemical parameters and compared with the standard desirable limits of water quality parameters prescribed by Bureau of Indian Standards and World Health Organisation. It was observed that the bed rock of the study area influenced the groundwater quality resulting in higher concentrations of calcium, potassium and phosphates in the groundwater samples.
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Papers by Monikandon Sukumaran