Effect of Sintering Temperature on the Magnetodielectric Performance of Nickel Ferrite

Nickel ferrite (NiFe2O4) nanopowder has been synthesized by a sol-gel auto-combustion process and further sintered at various sintering temperatures. The sintered samples were characterized by XRD, SEM and VSM. Enhancement of apparent density of the sample has been observed with the increase in sintering temperature and has a great influence on the magnetic and dielectric properties of NiFe2O4. The SEM results reveal that the grain size increases with increasing sintering temperature. The electrical resistivity decreases and the dielectric constant increases with increasing sintering temperature has been observed. The magnetic studies shown that the ferrimagnetic behaviour increases with sintering temperature. These results suggest that sintering temperature has a prominent effect on the magnetodielectric properties. © 2022 Author(s)

EFFECT OF SINTERING TEMPERATURE ON THE MAGNETODIELECTRIC PERFORMANCE OF NICKEL FERRITE

Nickel ferrite (NiFe2O4) nanopowder has been synthesized by a sol-gel auto-combustion process and further sintered at various sintering temperatures. The sintered samples were characterized by XRD, SEM and VSM. Enhancement of apparent density of the sample has been observed with the increase in sintering temperature and has a great influence on the magnetic and dielectric properties of NiFe2O4. The SEM results reveal that the grain size increases with increasing sintering temperature. The electrical resistivity decreases and the dielectric constant increases with increasing sintering temperature has been observed. The magnetic studies shown that the ferrimagnetic behaviour increases with sintering temperature. These results suggest that sintering temperature has a prominent effect on the magnetodielectric properties

Mycobacterium tuberculosis Responds to Chloride and pH as Synergistic Cues to the Immune Status of its Host Cell

PubMed ID: 23592993This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

Population Dynamics of Leafhopper (Empoasca flavescens) and Thrips (Scirtothrips dorsalis) of Castor (Ricinus communis L.)

The experiment on population dynamics against leafhopper and thrips  of castor,a field experiment was conducted during 2021 & 2022 on castor (Ricinus communis) at Regional Agricultural Research Station Palem, PJTSAU. The studies on population dynamics of leafhopper (Empoasca flavescens) revealed thatthe activity of leafhoppers was moderate to heavy with maximum of 120.8 leafhoppers/3 leaves/plant was recorded during the second fortnight of December (52 SMW, 24th-31st Dec). Leafhopper population had non-significant and negative correlation with  maximum temperature (r = -0.24 and r = -0.29, respectively), whereas it had significant assocation and negative correlation with minimum temperature, morning relative humidity, evening relative humidity as well as rainfall (r = - 0.64 - 0.50, r=-0.61 and - 0.52, respectively). Thrips infestationwas observed from October first fortnight (40 SMW 1st Oct -7th Oct) to December second fortnight (52 SMW, 24th-31st Dec) with peak infestation 31.1 thrips/spike.Thrips population had non-significant and negative correlation with  maximum temperature ( r = -0.29), whereas it had significant assocation and negative correlation with minimum temperature, morning relative humidity, evening relative humidity as well as rainfall (r = - 0.68, r= -0.55, r=-0.63 and, r=- 0.49 respectively). Leafhopper and thrips has significant association and positive correlation with sunshine hours (r=0.55 & r=0.51)

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Not AvailableA 4-year field study (2013–14 to 2016–17) was conducted at Palem, Telangana, to understand the impact of selective mechanization practices (SMPs), viz. motorized power spray, mechanical interculture, harvesting using secateurs and mechanical castor shelling, and conventional practices (CPs) like knapsack sprayer, bullock-drawn blade, manual harvesting and manual shelling with wooden sticks on the productivity and profitability of castor (Ricinus communis L.) cultivation on rainfed Alfisols. Results showed a 13.2% increment in seed and oil yield, a saving of 23-man days and 54 hours time/ha coupled with higher additional net returns ( 9,448/ha) owing to SMPs. Further, adoption of SMPs also resulted in improved infiltration rate, higher rainwater use efficiency, energy ratio, energy productivity, and net energy gain over CPs. Of the 4 agronomic operations under study, the maximum energy (683 and 419 MJ/ha) was consumed by plant protection. To upscale and outscale the technology, there is a need for breeding genotypes amenable for mechanization and establishment of custom-hiring centres with appropriate machinery, so that small-holder farmers in India will have access to machinery for undertaking timely operations and improve farm income.Not Availabl

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Not AvailableThe present research focuses on the identification of stable trait specific genetic resources across the five semi arid environments located in the four states of India. The study illustrated the existence of a wide range of variations for most of the characters among the sunflower genotypes, which provides opportunities for genetic gain through selection or hybridization. Genotype x Environment (G x E) interaction was significant for all traits except for days to 50 % flowering, maturity days and 100-seed weight which means different genotypes responded differently to environments for the rest of the traits. Based on per se performance across the locations GMU 296 and HOHAL 30 can be considered as high yielding and high oil content accessions. Based on biplot, stability and per se performance genotypes GMU 806, GMU 635, GMU 296, GMU 802 and check DRSF113, can be considered as a medium to high yielding with medium oil content and medium maturity genotypes across the environments and can be considered as an ideal genotype across semi-arid environments. Character association indicated that among the seven traits, seed yield per plant had a significant negative association with oil content. The traits 50 % flowering and maturity days fall under one group and showed the more or less similar type of pattern in the expression of the traits by heat map approach. Based on diversity analysis identified genotypes from the second cluster can be utilized for the development of high yielding, medium oil content and medium duration diverse gene pool in sunflower for semi-arid environments.ICA