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Tamilselvan S.,Vector Control Research Center | Jambulingam P.,Vector Control Research Center | Manoharan V.,Neyveli Lignite Corporation | Shanmugasundaram R.,Neyveli Lignite Corporation | And 2 more authors.
Journal of Vector Borne Diseases | Year: 2015

Background & objectives: Fly ash is produced in huge quantities by the various thermal power stations in India. This thermal waste has been employed as a carrier material in the preparation of a biopesticidal water dispersible powder (WDP) formulation for use against mosquitoes. In the present investigation, this newly developed fly ash based WDP formulation was evaluated in natural breeding habitats of mosquito. Methods: Fly ash based WDP formulation of Bacillus thuringiensis var. israelensis (VCRC B17) was evaluated for its efficacy and residual activity in aquatic habitats supporting breeding of Culex quinquefasciatus, the vector of lymphatic filariasis in Neyveli Township, Neyveli Lignite Corporation, India for a period of one month. Results: At an application rate of 10 kg/ha, the WDP was effective for five days regardless of the habitat, and provided 80-00% reduction in larval abundance of Cx. quinquefasciatus. Interpretation & conclusion: The study indicates that for continued control of immature density and prevention of adult emergence, a weekly application of this formulation is necessary. This study also showed that fly ash based formulations can be used for immediate control of mosquitoes in different types of habitats and has also brought out a new avenue for the utilization of coal ash. © 2015, Malaria Research Center. All rights reserved.

Michael Arputharaj M.E.,Neyveli Lignite Corporation Ltd.
Journal of Mines, Metals and Fuels | Year: 2015

Output per man shift from Indian underground coal mines has been stagnant since decades and a cause of concern. Introduction of continuous miner technology, though it works for 10%of its cycle time, is considered as an appropriate technology to boost productivity from already developed coal mining properties. A continuous miner is a mining machine that produces a constant flow of ore from the working face of the mine. The machine continuously extracts as it is loading coal with a cutting steel drum and conveyor system. This paper briefly describes Indian experience with using the continuous miner technology.

Mohan J.,Mepco Schlenk Engineering College, Sivakasi | Moorthy D.N.,Neyveli Lignite Corporation Ltd. | Manikandan B.V.,Mepco Schlenk Engineering College, Sivakasi
2011 International Conference on Recent Advancements in Electrical, Electronics and Control Engineering, IConRAEeCE'11 - Proceedings | Year: 2011

The main objective of this paper is to develop software model for reliability analysis using Availability Based Tariff (ABT) method for state grids to maintain the reliability and quality of the power system. For maintaining the grid discipline Availability Based Tariff (ABT) method has been followed. It is the frequency linked tariff system. ABT has three part tariff system such as fixed charge, variable charge and unscheduled interchange (UI) charges. The UI charges are depends upon the deviations in the grid frequency of the power system. The proposed software based ABT method is used to analyze the reliability of grid, and it is implemented by using visual basic and MS-excel. © 2011 IEEE.

Michael Arputharaj M.E.,Neyveli Lignite Corporation Ltd.
Journal of Mines, Metals and Fuels | Year: 2015

Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to in situ observation. In modern usage, the term generally refers to the use of aerial sensor technologies to detect and classify objects on earth (both on the surface, and in the atmosphere and oceans) by means of propagated signals (e.g. electromagnetic radiation). It may be split into active remote sensing, when a signal is first emitted from aircraft or satellites or passive (e.g. sunlight) when information is merely recorded. Passive sensors gather natural radiation that is emitted or reflected by the object or surrounding areas. Reflected sunlight is the most common source of radiation measured by passive sensors. Examples of passive remote sensors include film photography, infrared, charge-coupled devices, and radiometers. Active collection, on the other hand, emits energy in order to scan objects and areas whereupon a sensor then detects and measures the radiation that is reflected or backscattered from the target. RADAR and LIDAR are examples of active remote sensing where the time delay between emission and return is measured, establishing the location, speed and direction of an object. This paper describes the technology of remote sensing in brief and its applications in mining field.

Mohan B.S.,Neyveli Lignite Corporation Ltd.
Journal of Mines, Metals and Fuels | Year: 2013

The Journal of Mines, Metals & Fuels (JMFF) is widely acclaimed by mining fraternity and has the distinction of being the most widely read and referred Journal. The Journal, has had a distinguished track record of 60 years of publishing history. Out of the total geological reserve of 4 1,963 Mt of lignite, about 9,200 Mt is available within a depth of 150 m, which can only be mined with the presently available proven technology. About 32,000 Mt is available in a depth ranges from 150 to 500 m which may not be possible to mine economically with the available technology. This deep seated category itself claims 76% of the total reserve. The main constituent units of NLC are four opencast lignite mines linked to four thermal power plants with a total mining capacity of 30.6 MTPA and power generation of 2740 MW which would shortly increase to 3240 MW, with the addition of 500 MW in Thermal Power Station-II Expansion. NLC has made significant contributions, not only in the area of production like mines and thermal, but also in the field of environmental protection and ecological balance.

Arputharaj M.E.M.,Neyveli Lignite Corporation Ltd
Journal of Mines, Metals and Fuels | Year: 2016

A vital component in the design of a new underground mine is the quantified planning of the distribution of airflows, together with the locations and duties of fans and other ventilation controls required to achieve acceptable environmental conditions throughout the system. Similarly, throughout the life of an underground operation, it is necessary to plan ahead in order that new fans, shafts or other airways are available in a timely manner for the efficient ventilation of extensions to the workings. As any operating mine is a dynamic system with new workings continually being developed and older ones coming to the end of their productive life, ventilation planning should be a continuous and routine process. Ventilation network analysis is concerned with the interactive behaviour of airflows within the connected branches of a complete and integrated network. The questions addressed by ventilation network analysis may be formulated quite simply. If we know the resistances of the branches of a ventilation network and the manner in which those branches are interconnected then we can predict, quantitatively, the distribution of airflow for given locations and duties of fans. Various softwares are used to simulate underground mining environments for planning and verification of the environmental performance parameters of operational and future mines. This paper describes the step by step procedure involved in planning the ventilation system of an underground coal mine as well as the usage of software packages in design of the same.

Anandan K.S.,Neyveli Lignite Corporation Ltd | Sahay S.N.,Neyveli Lignite Corporation Ltd | Karthikeyan S.,Neyveli Lignite Corporation Ltd
Mine Water and the Environment | Year: 2010

In Neyveli, Tamilnadu, India, a deep-seated multi-layered confined aquifer is being continuously pumped to permit safe mining of lignite. This paper highlights the various ground water recharge studies undertaken to quantify the potential of recharging the Neyveli hydrogeological basin to maintain the regional ground water balance. GIS studies were used to analyze artificial recharge in the Neyveli basin, commencing from the deep water table zone (recharge area) in the western upland part, the confined aquifer zone closer to the active mining area, and the confined zone further away in the east, down-dip and closer to the coast. © Springer-Verlag 2009.

Ravi Kumar V.,Neyveli Lignite Corporation Ltd | Sahay S.N.,Neyveli Lignite Corporation Ltd | Periasamy N.,Neyveli Lignite Corporation Ltd | Shiv Prasad S.,Neyveli Lignite Corporation Ltd | Karthikeyan S.,Neyveli Lignite Corporation Ltd
Mine Water and the Environment | Year: 2010

Water conservation and water management practices have been adopted at Neyveli to ensure proper hydrologic balance. These practices are important because ground water pumping is a prerequisite for lignite mining in the Neyveli basin. This paper delineates some of these practices and the scientific studies undertaken by the Neyveli Lignite Corporation to develop and implement them. Optimal water utilization would be achieved by maintaining the ground water recharge (input) and the ground water extraction (output) ratio in the basin. © Springer-Verlag 2009.

Anandan K.S.,Neyveli Lignite Corporation Ltd | Sahay S.N.,Neyveli Lignite Corporation Ltd | Ramabadran T.K.,Neyveli Lignite Corporation Ltd | Shiv Prasad S.,Neyveli Lignite Corporation Ltd
Mine Water and the Environment | Year: 2010

Dewatering in deep opencast mines generally focuses on extraction of seepage water from the phreatic zones above the ore/mineral deposits and storm water that collects in mine pits. But at the Neyveli lignite deposit in the Cuddalore District, there was a danger of the mine floor bursting due to the hydrostatic head pressures in the underlying thick confined aquifers, a problem not previously encountered anywhere in India. Hydrogeological studies established the feasibility of mining the lignite by maintaining a constant cone of depression (pressure relief) in the surrounding aquifers below the mine by continuous pumping through a pre-planned network of wells. This depressurizing process had to be designed to tackle multi-layered confined aquifers and water table conditions. This paper traces the multi-faceted evolution in developments to control ground water at the Neyveli Mines. © Springer-Verlag 2009.

PubMed | Neyveli Lignite Corporation Ltd
Type: Journal Article | Journal: Ancient science of life | Year: 2012

This study is aimed at evaluating the efficacy of the Ayurvedic system, especially for chronic diseases. Assessment of the subjective relief feed back was done on the lines as suggested in Caraka Samhita, one of the oldest classical Ayurvedic texts. An inter-disciplinary research work involving ancient medical learning and hi-tech modern electronic data processing unit evaluate the efficacy of the Ayurvedic treatment in a closed community. 80 percent of the respondents were in the relief range of 75% to 100%, while overall relief in terms of regaining positive health in addition to attending complaint relief is over 70% in all diseases groups, as reported by the respondents in this Programme.

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