Sri Paramakalyani College, is a general degree college located in Alwarkurichi, Tenkasi District, Tamil Nadu. It was established in the year 1963. The college is affiliated with Manonmaniam Sundaranar University. This college offers different courses in arts, commerce and science..
Plants and plant-derived metabolites have been extensively used to fabricate multifunctional nanomaterials due to their high efficacy and biocompatibility. In this study, a green, sustainable, and cost-effective approach was employed for the synthesis of zinc oxide nanoparticles (ZnO NPs) using leaf and flower extracts of Calotropis gigantea, referred to as CgL-ZnO NPs and CgF-ZnO NPs, respectively. The synthesized nanoparticles were evaluated for their plant growth-promoting effects on Vigna radiata, Vigna mungo, and Capsicum annuum, their dye removal efficiency against Rhodamine B (RhB) in aqueous solutions, antibacterial activity against human and plant pathogens, and antioxidant properties. Additionally, the nanoparticles were assessed for compatibility with plant growth-promoting rhizobacterial strains. The results showed that highly stable, nanoscale, crystalline ZnO particles were synthesized, capped with the phytochemical constituents from Calotropis gigantea leaf and flower extracts. While both CgL-ZnO NPs and CgF-ZnO NPs exhibited plant growth promotion effects, the CgL-ZnO NPs demonstrated superior plant growth enhancement. Furthermore, CgL-ZnO NPs achieved the highest dye removal efficiency at 83.3
Let G be a group. Then the permutability intersection graph of G is a graph and it is denoted by PI(G) whose vertex set is all the proper subgroups of G and two vertices H, K are adjacent if and only if they permutes and H boolean AND K =/ {e} . In this paper, we classified all finite groups whose permutability intersection graph is one of planar, bipartite, C-3-free. Also, we have studied some other properties for the same.
Let G be a (p, q) graph. Let V be an inner product space with basis S. We denote the inner product of the vectors x and y by < x, y >. Let phi V (G) -> S be a function. For edge uv assign the label . Then phi is called a vector basis S-cordial labeling of G if|phi(x)-phi(y)|<= 1 and |gamma(i)-gamma(j)|<= 1 where phi(x) denotes the number of vertices labeled with the vector x and gamma i denotes the number of edges labeled with the scalar i. A graph which admits a vector basis S-cordial labeling is called a vector basis S-cordial graph. In this paper, we examine the vector basis {(1,1,1,1),(1,1,1,0),(1,1,0,0),(1,0,0,0)}-cordial labeling behaviour of Mongolian tent and parachute graph such a labeling finds applications in biological modelling.
Single crystal of Zinc Sulphate Nickel Nitrate (ZN) was successfully grown using the slow evaporation method. Single crystal X-ray diffraction (SCXRD) analysis revealed that the crystal belongs to the monoclinic crystal system. The elemental composition and functional groups of the compound were confirmed through Energy Dispersive X-ray Analysis (EDAX) and Fourier Transform Infrared Spectroscopy (FTIR), respectively, indicating the presence of the expected constituents. Optical characterization using UV–Visible spectroscopy showed a sharp transmittance cut-off at 235 nm, and the Tauc’s plot revealed an optical band gap of 5.2 eV. Additional optical parameters, including refractive index, extinction coefficient, and reflectance, were also calculated. Photoluminescence (PL) studies demonstrated violet emission, suggesting potential optoelectronic applications. Cyclic voltammetry (CV) analysis indicated strong capacitive behavior, making the crystal a promising candidate for energy storage systems. Impedance spectroscopy further distinguished the contributions of bulk and grain boundary resistance. Antibacterial studies revealed that the Zn component exhibited significant antibacterial activity. This paper presents a thorough analysis and detailed discussion of the crystal’s properties.
Single crystals of pure and 0.5 mol% Cu2 + substituted lithium sulphate monohydrate (LSMH) were grown by slow evaporation. The novelty of this work lies in establishing a defect-assisted conduction model correlating Cu2 + substitution, lithium vacancy formation, impedance relaxation, surface morphology, nonlinear optical efficiency, and laser damage resistance. Structural substitution is inferred from ionic size compatibility and systematic electrical response modification. Complex impedance spectroscopy (323-353 K, 20 Hz-2 MHz) reveals bulk-dominated conduction exhibiting non-Debye relaxation. The data were fitted using an equivalent circuit model consisting of Rb-CPE elements, and fitting parameters are reported. AC conductivity follows Jonscher's power law, confirming thermally activated hopping via vacancy defects. A defect chemistry model based on Cu2 substitution at Li+ sites is proposed to explain conductivity changes. AFM reveals increased roughness upon doping. Second harmonic generation (SHG) was confirmed using the Kurtz-Perry method, and laser damage threshold (LDT) values (similar to 3 GW/cm2) indicate high optical stability. The combined electrical-defect-optical correlation establishes Cu2 + substituted LSMH as a promising multifunctional photonic material.
