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Thiruvananthapuram, India

The College of Engineering, TVM, commonly known as CET, is situated in Thiruvananthapuram, the capital city of Kerala, founded in 1939 during the reign of the Travancore King, Sree Chithira Thirunal Balarama Varma. The college was ranked 18th overall among 100 Top Engineering colleges of the country by Dataquest-CMR Top T-Schools Survey 2011. Wikipedia.

Reddy M.L.P.,Indian National Institute for Interdisciplinary Science and Technology | Divya V.,Indian National Institute for Interdisciplinary Science and Technology | Pavithran R.,College of Engineering, Trivandrum
Dalton Transactions | Year: 2013

Visible-light sensitized luminescent europium(iii) molecular materials are of considerable importance because their outstanding photophysical properties make them well suited as labels in fluorescence-based bioassays and low-voltage driven pure red-emitters in optoelectronic technology. One challenge in this field is development of visible-light sensitizing ligands that can form highly emissive europium(iii) complexes with sufficient stability and aqueous solubility for practical applications. Indeed, some of the recent reports have demonstrated that the excitation-window can be shifted to longer-wavelengths in europium(iii)-β-diketonate complexes by appropriate molecular engineering and suitably expanded π-conjugation in the complex molecules. In this review, attention is focused on the latest innovations in the syntheses and photophysical properties of visible-light sensitized europium(iii)-β- diketonate complexes and their application as bioprobes for cellular imaging. Furthermore, luminescent nanomaterials derived from long-wavelength sensitized europium(iii)-β-diketonate complexes and their application in life sciences are also highlighted. © 2013 The Royal Society of Chemistry. Source

Rajeev T.,College of Engineering, Trivandrum | Ashok S.,National Institute of Technology Calicut
Applied Energy | Year: 2015

Demand-side management programs such as load shifting utilise the flexibility in the load consumption pattern of consumers to enable the effective capacity utilisation of renewable energy sources. The locational and temporal characteristics of renewable energy sources cause forecasting and operational challenges in the implementation of such a renewable energy program. In this paper, a dynamic load-shifting program using real-time data in a cloud computing framework is proposed to address the aforementioned issues. A new dynamic renewable factor is proposed to facilitate on-time incentive based load shifting program. The effectiveness of the dynamic load-shifting program was evaluated using simulated case studies. The case study indicates that PV energy utilisation at the consumer side is increased by 18% by the application of the proposed load-shifting program. The study result in Kerala, India, consisting of more than 7.5 million domestic consumers, indicates that demand reduction of 250-300. MW at times of peak demand can be achieved by using load shifting in the domestic sector. © 2015 Elsevier Ltd. Source

Swarnalatha K.,College of Engineering, Trivandrum
Journal of environmental management | Year: 2013

Urbanisation has a profound influence on our environment, and its burden is often transferred to aquatic systems. The surface sediments of urban lake systems are severely threatened with major contamination on a daily basis. Empirical evidence gleaned from the study of Akkulam Veli, a tropical urban lake in Southern India, indicates the need to evaluate all factors defining the contamination status of lake systems, rather than the conventional procedure that use Al or Fe, and select normalisers to evaluate metal enrichment in contaminated lake systems. A two step correlation analysis was done using Fe, Al, Co, Mn, Ti and Si as normalisers for Cr, Co, Ni, Cu, Zn and Pb. However, Fe, Al, Co, Mn and Ti are found to be unsuitable as normalisers for various reasons, including the redox condition of the lake for Fe, the geological structure of the lake, with its laterite basin that is conducive to high concentrations of Al, the near-detectable range in many stations that can magnify the enrichment for Co, the escalation in EF values for Mn, and the probability of effluent entry from the nearby titanium-based industry for Ti. Si, which is highly refractory, stable, associated with clay minerals, and unaffected by environmental factors such as reduction/oxidation, adsorption/desorption and other diagenic processes, appears to be the most appropriate normaliser in AV lake sediments. The average EF values calculated using Si as a normaliser are Pb (3.88) > Cr (1.77) > Zn (1.71) > Co (1.34) > Cu (1.29) > Ni (0.94). The results of the study show that this alternate method is more accurate at estimating EF values, which in turn can be employed more precisely to evaluate the extent of anthropogenic contamination in urban lake systems with highly contaminated surface sediments. Copyright © 2013 Elsevier Ltd. All rights reserved. Source

Vinod P.P.,College of Engineering, Trivandrum
Proceedings of the Institution of Civil Engineers: Ground Improvement | Year: 2016

The reported methods for prediction of compaction parameters of fine-grained soils are critically re-examined in this paper. It is shown that correlations involving just any one index property do not yield satisfactory prediction of optimum moisture content and maximum dry unit weight of soil at any rational compactive effort. By defining a finegrained soil by its liquid limit and plastic limit, the interrelationship between compaction energy and compaction parameters is brought within a definite framework. Plastic limit is found to influence the maximum dry unit weight of soil to a greater extent than the liquid limit at all energy levels considered in the study. On the other hand, the optimum moisture content–compaction energy–index property relationship is more complex. The degree of accuracy of optimum moisture content prediction is improved when separate correlation equations are used for low-to-medium plastic and highly plastic soils. © 2016 Thomas Telford Services Ltd. Source

Arun K.G.,Chennai Mathematical Institute | Pai A.,College of Engineering, Trivandrum
International Journal of Modern Physics D | Year: 2013

Gravitational wave (GW) observations of coalescing compact binaries will be unique probes of strong-field, dynamical aspects of relativistic gravity. We present a short review of various schemes proposed in the literature to test general relativity (GR) and alternative theories of gravity using inspiral waveforms. Broadly these schemes may be classified into two types: model dependent and model independent. In the model dependent category, GW observations are compared against a specific waveform model representative of a particular theory or a class of theories such as scalar-tensor theories, dynamical Chern-Simons theory and massive graviton theories. Model independent tests are attempts to write down a parametrized gravitational waveform where the free parameters take different values for different theories and (at least some of) which can be constrained by GW observations. We revisit some of the proposed bounds in the case of downscaled LISA configuration (eLISA) and compare them with the original LISA configuration. We also compare the expected bounds on alternative theories of gravity from ground-based and space-based detectors and find that space-based GW detectors can test GR and other theories of gravity with unprecedented accuracies. We then focus on a recent proposal to use singular value decomposition of the Fisher information matrix to improve the accuracies with which post-Newtonian theory can be tested. We extend those results to the case of space-based detector eLISA and discuss its implications. © 2013 World Scientific Publishing Company. Source

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