Properties of electrodeposited functional Ni–Fe/AlN nanocomposite coatings

AbstractNi–Fe/AlN nanocomposite coatings were electrodeposited from sulphamate based electrolyte in N,N-dimethylformamide solvent. The conditions of maximum particulate incorporation into the matrix were optimized. The coatings were characterized by Scanning electron microscopy (SEM), Energy dispersive analysis of X-ray (EDAX), X-ray diffractometry (XRD), and Vicker’s microhardness tester. The reinforcement of matrix with nano-AlN rendered superior microhardness (up to 560 HV) to the nanocomposites over monolithic Ni and Ni–Fe alloy deposits. Incorporation of aluminium nitride (AlN) particles in the Ni–Fe alloy matrix under optimum condition was recorded up to 23.2wt%. Magnetic measurements revealed soft ferromagnetic behaviour of the deposit with marked tendency towards superparamagnetism

Evaluation of the antioxidant activity of amarnathus spinosus Linn., by non enzymatic haemoglycosylation

Amaranthus spinosus Linn. complete plant material was extracted successively by petroleum ether, chloroform, methanol, and water. All the extracts were subjected to in vitro non-enzymatic haemo-glycosylation method, i.e. an oxidation reaction. The degree of haemoglycosylation in the presence of different extracts of Amaranthus spinosus were measured colorimetrically at 520 nm. The preventive effect of haemoglobin glycosylation at the two concentration; 0.5 and 1 mg/mL was estimated as follows: pet. ether; 13.1%, 16.4%, chloroform; 5.7%, 12%, methanol: 36.91%, 56.07% and aqueous: 22.2%, 31.01 %, respectively. The α-tocopheral (Vitamin E) was used as standard

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Not AvailableA field experiment was conducted on 2-year-old Kinnow mandarin to find out effect of different nitrogen sources and nitrification inhibitors on ammonical and nitrate nitrogen distribution in Kinnow young plants during 2011-12. There were 13 treatments comprising four nitrogen sources (ammonium sulphate, calcium nitrate, mixture of ammonium sulphate and calcium nitrate and urea), two nitrification inhibitor (dicyandiamide 5% of fertilizers, meliacin 0.1% of fertilizers) and control. Recommended fertilizers dose was applied in three splits, i.e. in February, June and September. Nitrification inhibitors were mixed with different nitrogenous fertilizers before application and then applied in the field. The process of nitrification slow down when N-fertilizers (ammonium sulphate, mixture of ammonium sulphate & calcium nitrate and urea) treated with DCD and meliacins. Thus the inhibitory effect of DCD and meliacins on the nitrification process resulted in more NH4+ accumulation in soil. The concentration of NH4+-N in soil at 0-30 (44.1, 55.7, 42.7 mg kg-1 soil below drippers and 37.8, 41.9, 36.0 mg kg-1 soil at 30 cm away from drippers) and 30-60 cm depth (24.2, 20.2, 23.2 mg kg-1 soil below drippers and 20.0, 23.5, 23.6 mg kg-1 soil at 30 cm away from drippers) in all three split applications respectively, was significantly higher when ammonium sulphate followed by urea fertilizers treated with DCD than they are in alone form. Due to nitrification inhibitors, NO3- -N availability remains high on surface level, reduced NO3 - leaching and increase N fertilizer utilization efficiency in Kinnow production.Not Availabl

Genomic analysis of early SARS-CoV-2 breakthrough infections from the state of Kerala suggest a preponderance of variants of concern

The SARS-CoV-2 Variant of Concern, Delta (B.1.617.2) was first reported in December 2020 in India and has spread colossally throughout the globe. Owing to factors like increased transmissibility, immune escape, and virulence, the delta variant has been considered as a potential public health threat apart from other variants of concern like alpha, beta and gamma. Kerala was one of the first states in India to enroll in the systematic genomic surveillance. In the present report, vaccine breakthrough infections were followed up in 147 patients including 55 healthcare workers who had been vaccinated with ChAdOx1 nCoV- 19/BBV152 across eleven districts from the state of Kerala. The timeline of samples analysed were from April 2021 till June 2021. Severity of the infections reported in the enrolled patients found to be mildly symptomatic, majorly with only 0.7% (n=1) of the cohort to be asymptomatic. Genomic analysis of the samples revealed the Delta variant (B.1.617.2) to constitute about 81.6% (n=120) in the studied cohort. This was followed by the Kappa variant B.1.617.1 (8.35%, n=9), AY.1 (0.6%, n= 1), AY.12 (0.6%, n= 1), AY.4 (1.2%, n= 2), AY.9 (1.2%, n= 2) and Eta variant, B.1.525 (0.6%, n= 1). 11 samples were not assigned any lineage. Evidence from this study suggests the preponderance of the Delta variant in the samples analysed