Publications by authors named "M R Preetha Rani"

Synthetic elicitors are non-toxic chemicals and safe for the environment when applied to plants in a variety of ways. They have been shown to interact with defense mechanisms of plants and cause the production of a wide range of valuable secondary metabolites, both volatile and non-volatile. Plants primed with chemical elicitors are indirectly induced to increase their resistance to herbivore attacks in addition to imparting tolerance or resistance to nearby plants against biotic stresses.

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In the face of declining crop yields, inefficient fertilizer usage, nutrient depletion, and limited water availability, the efficiency of conventional NPK fertilizers is a critical issue in India. The hypothesis of this study posits that nano-nitrogen could enhance growth and photosynthetic efficiency in crop plants compared to conventional fertilizers. For this, a randomized block design (RBD) field experiment was conducted with six treatments: no nitrogen (T1), 100% N through urea (T2), and varying levels of N replacement with nano-nitrogen (33%: T3; 50%: T4; 66%: T5; and 100%: T6).

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This study reports novel three-step electrochemical fabrication of CoCrO/graphene-oxide nanocomposite on glassy carbon electrode including sequential synthesis of graphene-oxide using modified Hummer's method, CoCrO nanoparticles using sol-gel method and the cost-effective co-precipitation technique for nanocomposite formation. The resulting nanocomposite was subjected to comprehensive analytical and morphological analysis. X-ray diffractometry (XRD) confirms nanocomposite formation with reduced average crystallite size value of 26.

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Polymers have been integral to the advancement of biomedicine, owing to their exceptional versatility and functionality. Among these, polyvinyl alcohol (PVA) and chitosan both natural polymers stand out for their remarkable biocompatibility, biodegradability, and unique properties. This review article provides a comprehensive examination of the diverse applications of PVA and chitosan in three pivotal areas: tissue engineering, drug delivery, and biosensors.

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Article Synopsis
  • The study explores the effective degradation of hexabromocyclododecane (HBCD), a harmful pollutant, using a biochar and sulfur-doped copper oxide (S-CuO) nanocomposite created through eco-friendly synthesis methods.
  • The BC@S-CuO nanocomposite demonstrated the highest photocatalytic activity, achieving 92% degradation of HBCD in 120 minutes, with optimal conditions found at specific pH levels and catalyst loading amounts.
  • The research highlights the potential for BC@S-CuO to be reused multiple times, along with its implications for pollution control, especially concerning the leaching of HBCD from expanded polystyrene materials.
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