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.

Theoretical Study of Convective Heat Transfer in Ternary Nanofluid Flowing past a Stretching Sheet

Abstract: A new theoretical tri-hybrid nanofluid model for enhancing the heat transfer is presented in this article. This model explains the method to obtain a better heat conductor than the hybrid nanofluid. The tri-hybrid nanofluid is formed by suspending three types of nanoparticles with different physical and chemical bonds into a base fluid. In this study, the nanoparticles TiO2, Al2O3 and SiO2 are suspended into water thus forming the combination TiO2-SiO2-Al2O3-H2O. This combination helps in decomposing harmful substances, environmental purification and other appliances that requires cooling. The properties of tri-hybrid nanofluid such as Density, Viscosity, Thermal Conductivity, Electrical Conductivity and Specific Heat capacitance are defined mathematically in this article. The system of equations that governs the flow and temperature of the fluid are converted to ordinary differential equations and are solved using RKF-45 method. The results are discussed through graphs and it is observed that the tri-hybrid nanofluid has a better thermal conductivity than the hybrid nanofluid.

Gene Expression Profiling of Gastric Cancer.

Abstract: Gastric cancer is the second leading cause of cancer death worldwide, both in men and women. A genomewide gene expression analysis was carried out to identify differentially expressed genes in gastric adenocarcinoma tissues as compared to adjacent normal tissues. We used Agilent's whole human genome oligonucleotide microarray platform representing ~41,000 genes to carry out gene expression analysis. Two-color microarray analysis was employed to directly compare the expression of genes between tumor and normal tissues. Through this approach, we identified several previously known candidate genes along with a number of novel candidate genes in gastric cancer. Testican-1 (SPOCK1) was one of the novel molecules that was 10-fold upregulated in tumors. Using tissue microarrays, we validated the expression of testican-1 by immunohistochemical staining. It was overexpressed in 56% (160/282) of the cases tested. Pathway analysis led to the identification of several networks in which SPOCK1 was among the topmost networks of interacting genes. By gene enrichment analysis, we identified several genes involved in cell adhesion and cell proliferation to be significantly upregulated while those corresponding to metabolic pathways were significantly downregulated. The differentially expressed genes identified in this study are candidate biomarkers for gastric adenoacarcinoma.

Use of ICT in college libraries in Karnataka, India: a survey

Abstract: Purpose – The purpose of this paper is to examine the use of information communication technology (ICT) in 31 college libraries in Karnataka, India by investigating the ICT infrastructure, current status of library automation, barriers to implementation of library automation and also librarians' attitudes towards the use of ICT.Design/methodology/approach – Data‐gathering tools used included questionnaire, observation and informal interview with selected college librarians.Findings – Application of ICT in Indian college libraries has not reached a very high level. Lack of budget, lack of manpower, lack of skilled staff and lack of training are the main constraints for not automating library activities. Even though library professionals have shown a positive attitude towards the use of ICT applications and library automation, they need extensive and appropriate training to make use of ICT tools.Originality/value – This is a comprehensive study on the use of ICT in Indian college libraries. Its findings sho...

CuO/ZnO/g-C3N4 heterostructures as efficient visible light-driven photocatalysts

Abstract: Photocatalytic degradation of organic pollutants is an environmentally friendly technique for water treatment. In this work, CuO/ZnO/g-C3N4 heterostructure is prepared via solution combustion route to take advantage of the porous structure which is resulted from releasing the gases during the combustion. XRD, EDX, TEM, XPS, and TEM analyses confirm the successful construction of CuO/ZnO/g-C3N4 heterostructure. SEM images reveal that the as-prepared heterostructure consists of flower-like nanosheets decorated with nanoparticles. The CuO/ZnO/g-C3N4 heterostructure exhibits improved photocatalytic activity for methylene blue (MB) degradation in comparison to the CuO/ZnO system under visible light irradiation. At optimal experimental conditions, about 98% of MB is degraded within 45 min. Moreover, about 91% of ammonia- nitrogen is degraded after 6 h visible light illumination. The enhanced photocatalytic activity is attributed to the improved redox potential of the photocatalyst and efficient electrons and holes separation induced by the Z-scheme charge carrier transfer.