GITAM University Hyderabad Campus

About: GITAM University Hyderabad Campus is a based out in . It is known for research contribution in the topics: Heat transfer & Nusselt number. The organization has 121 authors who have published 152 publications receiving 1700 citations.

Promoting higher order thinking skills using inquiry-based learning

Abstract: Active learning pedagogies play an important role in enhancing higher order cognitive skills among the student community. In this work, a laboratory course for first year engineering chemistry is designed and executed using an inquiry-based learning pedagogical approach. The goal of this module is to promote higher order thinking skills in chemistry. Laboratory exercises are designed based on Bloom's taxonomy and a just-in-time facilitation approach is used. A pre-laboratory discussion outlining the theory of the experiment and its relevance is carried out to enable the students to analyse real-life problems. The performance of the students is assessed based on their ability to perform the experiment, design new experiments and correlate practical utility of the course module with real life. The novelty of the present approach lies in the fact that the learning outcomes of the existing experiments are achieved through establishing a relationship with real-world problems.

MHD natural convection flow with radiative heat transfer past an impulsively moving plate with ramped wall temperature

Abstract: Influence of radiation on unsteady hydromagnetic natural convection transient flow near an impulsively moving vertical flat plate with ramped wall temperature in a porous medium is studied. Exact solution of momentum and energy equations, under Boussinesq approximation, is obtained in closed form by Laplace transform technique. The variations in fluid velocity and temperature are shown graphically whereas numerical values of skin friction and Nusselt number are presented in tabular form.

Air pollution tolerance index of various plant species growing in industrial areas

Abstract: Air Pollution Tolerance Index (APTI) was calculated for various plant species growing in industrial areas of Visakhapatnam. The leaf samples collected from 24 tree species in industrial areas of Visakhapatnam city were used to determine their Air Pollution Tolerance Index (APTI) by calculating the ascorbic acid, chlorophyll, pH, and relative water contents. In the present study, the APTI values of less than 16 are reported in 20 species and they can be used as indicators of air pollution. The species Ficus religiosa (25.77), Zizypus jujuba (22.32), Phyllanthus emblica (18.88) and Cassia fistula (18.69) showed their moderate response by changing their biochemical contents and are identified as moderately tolerant to air pollution.

Trace metal accumulation in vegetables grown in industrial and semi-urban areas - a case study

Abstract: The main sources of trace metals to plants are the air or soil media from which trace elements are taken up by the root or foliage. The air, soil and vegetable samples were collected from Industrial, Semi-urban and rural areas and were analysed for Pb, Zn, Ni and Cu. The rural area is free from contaminant sources and is treated as control. From each representative area composite samples of Tomato, Lady's finger, Capsicum and leafy vegetable Bimli were collected and anlysed for Pb, Zn, Ni and Cu. The air environments in Industrial and Semi-Urban areas are enriched with the four trace metals, but the concentrations were within the permissible levels. This indicates that, despite the close proximity of the agricultural lands to high emitting industrial sources, soils do not seem to have been contaminated by atmospheric deposition. Remarkable differences were observed between the trace metal content in vegetables of rural areas with semi-urban and industrial areas. In industrial area Nickel, Zinc were reported in higher concentrations in tomato and capsicum where as in semi urban area the concentration of Cu is 2-3 times higher in tomato and lady's finger on comparison with the rural vegetables. Based on the air accumulation factor and concentration factor calculations, the trace metals of Pb and Zn in industrial and semi-urban areas were found to be receiving the contributions from both atmospheric and soil inputs in all the four crops.