Kuvempu University

About: Kuvempu University is a education organization based out in Shimoga, India. It is known for research contribution in the topics: Cyclic voltammetry & Carbon paste electrode. The organization has 1575 authors who have published 2210 publications receiving 39755 citations. The organization is also known as: KU.

Electrochemical studies of Zn–Ni alloy coatings from acid chloride bath

Abstract: The electrodeposition of Zn–Ni alloy from chloride bath was carried out in presence of condensation product (CP) formed between vanillin and hexamine. The investigation of electrodeposition and nucleation process was carried out on glassy carbon electrode using cyclic voltammetric and chronoamperometric techniques. During the anodic scan of cyclic voltammetry, three anodic peaks were observed corresponding to the dissolution of zinc and nickel from different phases of Zn–Ni alloy. The model of Scharifker and Hills was used to analyze the current transients and it revealed that Zn–Ni electrocrystallization process in the presence of CP, under the studied conditions, is governed by three-dimensional nucleation process controlled by diffusion. In presence of CP, the results indicated that nucleation process changes from progressive to instantaneous when the deposition potential becomes more negative. The phase structure and surface morphology of the deposits were characterized by means of X-ray diffraction analysis and Scanning electron microscopy, respectively.

An electro-magneto-hydrodynamic flow Maxwell nanoliquid past a Riga plate: a numerical study

Abstract: The temperature-dependent heat source/sink in Maxwell nanoliquid flow towards a riga plate is investigated. In this model, we incorporated convective heat and mass boundary conditions. Similarity transformations are applied to convert the governing dimensional expressions into non-dimensional forms. Finite difference method along with Richardson extrapolation technique is utilized to elaborate the numerical solutions of physical phenomenon. Effects of different values of governing parameters on velocity, temperature and concentration profiles are evaluated via graphs. The quantities of interest like Nusselt and Sherwood numbers are discussed in detail through numerical data.

Measurement of natural radioactivity and radiation hazard assessment in the soil samples of Ramanagara and Tumkur districts, Karnataka, India

Abstract: The activity concentration of primordial radionuclides, 226Ra, 232Th and 40K in soil samples of Ramanagara and Tumkur districts were determined by gamma spectrometry using HPGe detector. The average activity concentrations of 226Ra, 232Th and 40K were found to be 33.78 ± 1.99, 77.44 ± 2.37 and 791.58 ± 5.78 Bq Kg−1 respectively. The measured activity concentrations of these radionuclides were compared with world average activity concentration of soil. The radiological hazard indices of the natural radioactivity have been calculated and compared with the internationally approved values. The concentration of these radionuclides with different size and depth of the soil samples was studied.