Jyothy Institute of Technology

Eryngium foetidum L. is a promising horticultural crop known for its numerous medicinal properties. Therefore, cultivating E. foetidum L. using sustainable practices is essential, which can be achieved by modifying the rhizospheric architecture of the soil with beneficial microorganisms. This study focuses on isolating the multifaceted bacteria Bacillus aryabhattai, exploring their potential in solubilizing inorganic phosphate sources, and enhancing plant growth and essential oil yield in E. foetidum L. under greenhouse conditions. The research also investigates the capacity of these bacteria to solubilize inorganic phosphate sources. The production of indole-3-acetic acid and gibberellic acid by B. aryabhattai was measured at 1.55 μg/ml and 2.25 μg/ml, respectively. The study found that B. aryabhattai was most effective in releasing phosphate from single super phosphate, followed by di-ammonium phosphate and tricalcium phosphate. Furthermore, plants treated with B. aryabhattai demonstrated a significant increase in both shoot and root lengths compared to untreated plants. The essential oil yield of E. foetidum L. plants inoculated with B. aryabhattai was found to be four times higher than that of un-inoculated plants under greenhouse conditions. The application of these versatile and previously unexplored bacteria resulted in significant improvements in biomass and essential oil yield while reducing the reliance on chemical fertilizers.

This Paper examines the corrosion behaviour of copper-based metal matrix composites reinforced with hybrid combinations of carbon nanotubes (CNTs) and micro-titanium particles, and evaluates the use of machine-learning models for corrosion prediction. Ten compositions (C0–C9) were fabricated by varying CNT content (0.5–1.5 wt

This study explores the fabrication and analysis of hybrid formwork panels using bamboo and coir fibers as an alternative to traditional timber-based systems. Currently, metal or wood-based formworks are primarily used but these are unsustainable, difficult to handle and have performance and durability restrictions. In this study, bamboo strips and coir fibers were used individually and also as blends as reinforcements for polypropylene and made into composites. Bamboo strips were used to achieve the desired mechanical properties and stability whereas coir fibers were used due to their low cost, large availability and for their ability to sorb moisture and provide good resistance against environmental degradation. The fiber matrix ratio and composite specifications were varied and the formwork obtained was evaluated for mechanical, thermal and durability properties in comparison to standard plywood. It was found that composites having density of 0.81 g/cm3 and 8 mm thickness made from 50:50 ratio of bamboo strips and coir fibers were most optimal and matched the standard panels in terms of mechanical properties. While the water absorption was 2.75 % higher and swelling 3.2 % higher than the standard panels, it was seen that the hybrid panels exhibited superior dimensional stability. Flame retardancy of hybrid panels in terms of limiting oxygen index (LOI) was higher by 2 % as compared to the standard panels. However, on ignition, the self-extinguishing time increased by 40 %. Even though the hybrid panels exhibited 5 % lower load-carrying capacity and 16 % lower hardness, they maintained their shape and resisted degradation during alternative wetting and drying 15 cycles spanning for 16 days. Screw withdrawal strength was observed to be 2.1 % lower than the standard panel with no visible damage. The study discusses the competitive performance of the hybrid panels as a viable alternative to traditional plywood for formwork applications. Bamboo and coir-based formwork will be renewable, cost-effective and environmentally friendly material which will help promote the green building, sustainable development and other goals. Hybrid bamboo coir panels indicated 6.6-7.2 % lower strength loss under ultraviolet(UV) weathering test and 5.4-5.6 % lower strength loss in humidity testing as compared to standard plywood due to improved fiber-matrix bonding.

Although LM13-based hybrid metal matrix composites reinforced with Zircon and carbon have been widely studied for tribological applications, the combined influence of chill-induced microstructural refinement and sliding speed on wear behaviour and predictive reliability remains insufficiently understood. This study investigates the effect of varying chill levels on wear resistance, wear–speed sensitivity, and the accuracy of statistical and machine-learning models for LM13/Zircon/Carbon hybrid composites. LM13 specimens were fabricated by copper chill casting with chill levels of 12

The rapid progress in electronics has exacerbated electromagnetic pollution, escalating the demand for electromagnetic interference (EMI) shielding materials. Whereas the abandonment of conventional nonbiodegradable EMI materials further provoked environmental pollution. Consequently, there is a growing emphasis on the biodegradability of EMI materials, in addition to qualities such as strong absorption, lightweight, flexibility, and breathability. In this study, biodegradable ultrafine fibrous EMI shielding mats were developed from epoxy-modified corn protein zein (ZE) with single- or double-layer coatings of polypyrrole (PPy) and silver (Ag). The epoxy modification endowed the base ZE fibers with adequate mechanical properties and morphological stability in wet conditions, ensuring high air permeability. The PPy/ZE mats achieved an EMI shielding effectiveness (SE) of 26.69 dB within the 8.2 to 12.4 GHz frequency range, which was further boosted to 86.00 dB by the Ag/PPy/ZE mats. Even after 5000 bends, 86.5% and 79.3% of the SE values could be retained. The Ag/PPy/ZE mats demonstrated antibacterial properties and adjustable joule heating performance. Biodegradation was evident after 40 days of soil burial, characterized by near-linear weight loss and alterations in mechanical properties. This study positions the Ag/PPy/ZE mats as a promising option for short-term EMI shielding in electronic devices or biomedical applications, both in vitro and in vivo, thereby stimulating the advancement of biobased EMI shielding materials.