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1

  • Positive and negative dust fluctuation on linear dust-acoustic waves in plasma system


Sanjit Kumar Paul

Abstract:
The linear propagation of the dust-acoustic waves (L-DAWs) in a dusty plasma consisting of Boltzmann-distributed electrons and ions, mobile charge fluctuating positive and negative dust charge fluctuating stationary positive dust and charge fluctuating stationary negative dust has been theoretically investigated


1-13
2

  • INFLUENCE OF THE ADDITION OF Na2CO3 NANO PARTICLES ON PHYSICAL PROPERTIES OF TRANSESTERIFIED CASTOR OIL


Sanjit Kumar Paul

Abstract:
MUDU. SUMAN There is a global effort to find alternative fluids for industrial applications, and vegetable oil is a promising candidate. However, the use of most vegetable oils as feedstock presents a challenge for industrial use, leading to the development of lubricant fluids from non-edible seed oils. The study you mentioned investigates the influence of nanoparticles on the physical properties of castor oil, which was purified and trans-esterified. Nanoparticles were then dispersed in the trans-esterified oil with concentrations ranging from 0.25% to 1.0% in 0.25% intervals. Fourier Transform Infrared Spectroscopy (FTIR) was used to examine the structures of the samples, and the viscosity, pour point, and flash point were also studied. The results of the study suggest that a small amount of Na2CO3 (0.25%) nanoparticles in the oil could improve the physical properties of the fluid. The nanofluid with 0.25% concentration of Na2CO3 appears to have optimum physical properties. This finding could potentially contribute to the development of more effective lubricant fluids for industrial applications. This study highlights the importance of exploring alternative fluids for industrial applications and the potential benefits of using nanoparticles to improve their physical properties.


14-23
3

  • Influence of catchment characteristics and anthropogenic activities in changing ecosystem properties of freshwater tropical lake Pichola in Rajasthan, India


Sanjay Meghwal1, Anuya Verma2 and Anshul Kandara3

Abstract:
Freshwater has become one of the most polluted water sources in recent years as a result of astounding developments. As a result, the water quality of these water resources is a constant issue, leading to an increase in the demand for lake water quality monitoring.Regular monitoring of freshwater bodies not only checks water from further deterioration, but also provides a scope to assess the current investments for pollution prevention and control. The current study aims to investigate the effects of alterations, whether direct or indirect, that occurred over lake Pichola, a dry tropical lake of Udaipur, southern Rajasthan, with reference to changes in its water quality caused by several anthropogenic activities in recent years.Several water samples were collected from the periphery of this lake in 2017 and were analysed. The generated data were compared to Lake Badi of Udaipurwhich is set in the same ecological conditions but taken as control lake or in ideal condition.


24-30
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