It was established in 1987 by the act of the Karnataka state legislature through amendment No. 28/1976 dated 29 January 1989 under the Karnataka State University Act 1976. The university offers undergraduate and graduate degree programs in wide range of disciplines. It was recognized by the UGC in 1994 and is a member of the Association of Indian Universities (AIU).The university has its headquarters at Jnana Sahyadri Campus, Shivamogga. Its campus is called Jnana Sahyadri, which means 'The Western Ghat section of knowledge'. It has university jurisdiction over malnad districts of Shivamogga and Chikmagaluru, through which the Sahyadri mountain ranges pass. The campus sprawls across an area of 230 acres. The campus has an admixture of wild and domestic animals..
Methylene blue is an ecologically toxic, carcinogenic, and mutagenic dye. Due to extensive industrial use, a significant quantity of effluent containing methylene blue dye is released into a water source. It may cause toxicity to humans and aquatic fauna. Therefore, detecting and removing MB dye from the effluent is essential. For this goal, we synthesized dual application zinc oxide nanoparticles using coffee fruit (Coffea arabica) peel biomass as a reducing agent. SEM scans revealed spherical nanoparticles. The EDX spectral data indicated the existence of zinc and oxygen elements. The X-ray diffraction pattern exhibited crystallinity of ZnO. Under optimized conditions, the electrochemical impedance spectroscopy (EIS), cyclic voltammetry, and Differential Pulse Voltammetry (DPV) study was studied for the detection of MB, an impressively low detection limit (LOD) of 0.01771 mu M was recorded, The photocatalytic efficacy of ZnO nanoparticles demonstrated a significant 92.43% degradation of methylene blue under UV light. So, Coffea arabica biomass may play a vital role in synthesizing eco-friendly ZnO nanomaterials for environmental remediation applications.
Climate variability and an increase in rainfall extremes have now become major challenges to water resource management and agricultural sustainability in semi-arid regions. Kalyana Karnataka is a drought-prone area located in the northeastern part of the state of Karnataka. The region experiences significant climatic variability, which is mainly influenced by its semi-arid nature and irregular monsoon patterns. This study focuses on spatio temporal variability of rainfall and drought conditions prevailing over Kalyana Karnataka, by analyzing long-term rainfall data over the period 1980 to 2025. Annual rainfall statistics, Percentage rainfall deviation (
This work explores the geometry and observational signatures of a Schwarzschild black hole immersed in a background composed of a string cloud and a quintessential scalar field, within the broader context of Finsler geometry. The string cloud component introduces anisotropic radial pressure through a dimensionless parameter 𝔞 , while the quintessence field, characterized by ω _𝔮 = -2/3 as the equation of state parameter, modifies the space-time in a way consistent with late-time cosmic acceleration. We further extend this configuration by embedding it in a Finslerian framework via the anisotropy parameter ϵ , taking into account potential violations of Lorentz invariance and incorporating directional dependence in the space-time structure. Our approach centers on understanding the path of photons around the black hole by analyzing null geodesics, the photon sphere, and the effective potential landscape. We derive the shadow radius and impact parameter as functions of 𝔞 , γ , and ϵ , and investigate how each modifies the shadow structure. Constraining these parameters using Event Horizon Telescope observations of M87* and Sagittarius A*, we identify viable bounds consistent with observed shadow diameters. The results indicate that Finslerian corrections influence the bending of light and the deformation of the black hole shadow, suggesting a more general and flexible framework for probing deviations from general relativity in strong-field regimes.
The development of high-performance cost-effective electrode materials remains a critical challenge in the advancement of supercapacitor technology. In this study, pure and yttrium-doped titanium dioxide (TiO2) nanoparticles were synthesized via a simple solution-based chemical method and investigated for their structural, optical, and electrochemical properties. X-ray diffraction (XRD) analysis confirmed the formation of phase-pure anatase TiO2 with tetragonal symmetry (JCPDS No. 21–1272), and successful Y3+ incorporation was indicated by peak shifts and crystallite growth. UV–Visible spectroscopy revealed a systematic increase in bandgap energy from 2.20 to 2.51 eV with increasing Y doping, attributed to the Burstein–Moss effect and dopant-induced defect states. Electrochemical performance, evaluated using Cyclic Voltammetry (CV) and Galvanostatic Charge–Discharge (GCD) in 2 M KOH electrolyte, demonstrated significantly enhanced pseudocapacitance in doped samples. The 0.05 M Y-doped TiO2 electrode achieved a maximum specific capacitance of 573.71 F g⁻1 at 2 mV s⁻1, compared to 217.81 F g⁻1 for the undoped counterpart. The enhanced performance is attributed to improved electrical conductivity, increased redox-active surface sites, and oxygen vacancy formation induced by Y doping. These findings highlight the potential of Y-doped TiO2 as a promising electrode material for next-generation supercapacitors, offering a balance of scalability, stability, and energy storage efficiency.
Electrochemical sensors have emerged as a valuable tool for detecting selective and sensitive antioxidants. Chromium oxide (Cr2O3) nanoparticles have shown great potential as modifiers for carbon paste electrodes (CPEs), owing to their superior conductivity and favorable electrochemical characteristics. Cr2O3 nanoparticles were synthesized by the combustion method using chromium (III) nitrate as oxidizer and glycine as a fuel, with the reaction carried out at 350 °C. Their microstructural features are analyzed through techniques of FESEM and XRD. The electroanalytical performance of a modified electrode (PGly/Cr2O3/CPE) for antioxidant Rutin (RU) detection was investigated in phosphate buffer solution (PBS, pH 6.6) by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and differential pulse voltammetry (DPV). The diffusion-controlled nature of the electrochemical process is confirmed through sweep rate variation studies. Differential pulse voltammetry (DPV) analysis demonstrated a low detection limit of 0.21 μM for RU. The modified electrode exhibited outstanding selectivity for interfering ions and achieved an accuracy of 99.83- 111.26
