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Search Results: 1 - 10 of 200676 matches for " Ezhilarasu P "
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Correlation of health-related quality of life with other disease severity indices in Indian chronic obstructive pulmonary disease patients
Shavro SA, Ezhilarasu P, Augustine J, Bechtel JJ, Christopher DJ
International Journal of Chronic Obstructive Pulmonary Disease , 2012, DOI: http://dx.doi.org/10.2147/COPD.S26405
Abstract: rrelation of health-related quality of life with other disease severity indices in Indian chronic obstructive pulmonary disease patients Original Research (2163) Total Article Views Authors: Shavro SA, Ezhilarasu P, Augustine J, Bechtel JJ, Christopher DJ Published Date May 2012 Volume 2012:7 Pages 291 - 296 DOI: http://dx.doi.org/10.2147/COPD.S26405 Received: 22 September 2011 Accepted: 12 January 2012 Published: 02 May 2012 Seema Aziyakath Shavro1, Punitha Ezhilarasu1, Jebamani Augustine1, Joel J Bechtel2, Devasahayam J Christopher3 1College of Nursing, Christian Medical College, Vellore, South India; 2Pulmonologist and Critical Care Physician, Grand Junction, CO, 3Department of Pulmonary Medicine, Christian Medical College, Vellore, South India Background: Improvement in quality of life (QOL) has become a focus for the management of incurable chronic diseases, including chronic obstructive pulmonary disease (COPD). This study investigates factors influencing the QOL of patients with COPD in India. Methods: Seventy-three consecutive COPD patients visiting an outpatient pulmonary clinic underwent health-related QOL (HRQOL) assessment using the World Health Organization’s QOL abbreviated questionnaire and St George’s Respiratory Questionnaire (SGRQ). Symptom severity and grade of dyspnea were estimated by the Chronic Lung Disease Severity Index (CLD) and Medical Research Council assessments, and patient demographic data were collected. Spirometry and 6-minute walk tests were performed to assess lung function and functional status. Results: Patients with COPD showed significantly reduced HRQOL when measured by the World Health Organization’s QOL abbreviated questionnaire and the SGRQ. CLD estimate for severity of lung disease (P < 0.001), Medical Research Council assessment for dyspnea (P < 0.01), and duration of illness (P < 0.05) showed close correlation with HRQOL. Worsening forced expiratory volume in 1 second and 6-minute walk test results closely correlated with poorer HRQOL (P < 0.01). No association between QOL and age, quantum of smoking, education, comorbid illnesses, or occupational exposure was found. Conclusion: This study showed that Indian patients with COPD had reduced HRQOL. Longer disease duration, patient perception of disease severity, and worsening dyspnea impacted negatively on HRQOL.
Correlation of health-related quality of life with other disease severity indices in Indian chronic obstructive pulmonary disease patients
Shavro SA,Ezhilarasu P,Augustine J,Bechtel JJ
International Journal of COPD , 2012,
Abstract: Seema Aziyakath Shavro1, Punitha Ezhilarasu1, Jebamani Augustine1, Joel J Bechtel2, Devasahayam J Christopher31College of Nursing, Christian Medical College, Vellore, South India; 2Pulmonologist and Critical Care Physician, Grand Junction, CO, 3Department of Pulmonary Medicine, Christian Medical College, Vellore, South IndiaBackground: Improvement in quality of life (QOL) has become a focus for the management of incurable chronic diseases, including chronic obstructive pulmonary disease (COPD). This study investigates factors influencing the QOL of patients with COPD in India.Methods: Seventy-three consecutive COPD patients visiting an outpatient pulmonary clinic underwent health-related QOL (HRQOL) assessment using the World Health Organization’s QOL abbreviated questionnaire and St George’s Respiratory Questionnaire (SGRQ). Symptom severity and grade of dyspnea were estimated by the Chronic Lung Disease Severity Index (CLD) and Medical Research Council assessments, and patient demographic data were collected. Spirometry and 6-minute walk tests were performed to assess lung function and functional status.Results: Patients with COPD showed significantly reduced HRQOL when measured by the World Health Organization’s QOL abbreviated questionnaire and the SGRQ. CLD estimate for severity of lung disease (P < 0.001), Medical Research Council assessment for dyspnea (P < 0.01), and duration of illness (P < 0.05) showed close correlation with HRQOL. Worsening forced expiratory volume in 1 second and 6-minute walk test results closely correlated with poorer HRQOL (P < 0.01). No association between QOL and age, quantum of smoking, education, comorbid illnesses, or occupational exposure was found.Conclusion: This study showed that Indian patients with COPD had reduced HRQOL. Longer disease duration, patient perception of disease severity, and worsening dyspnea impacted negatively on HRQOL.Keywords: quality of life, COPD, disease severity, India, questionnaire
Improved realization of canonical Chua's circuit with synthetic inductor using current feedback operational amplifiers
R. Jothimurugan,K. Suresh,P. Megavarna Ezhilarasu,K. Thamilmaran
Physics , 2014, DOI: 10.1016/j.aeue.2013.11.004
Abstract: In this paper, we report an improved implementation of an inductorless third order autonomous canonical Chua's circuit. The active elements as well as the synthetic inductor employed in this circuit are designed using current feedback operational amplifiers (CFOAs). The reason for employing CFOAs is that they have better features such as high slew rate, high speed of operation, etc., which enable the circuit to operate at higher frequency ranges, when compared to the circuits designed using voltage operational amplifiers. In addition to this, the inclusion of CFOAs provide a buffered output which directly represent a state variable of the system. The Multisim simulations in the time and frequency domains confirm the theoretical estimates of the performance of the proposed circuit at high frequencies. It is also confirmed through hardware experiments.
Analysis The Antibacterial And Antioxidant Activity Of Selected Medicinal Plants- ( Lippia Nodiflora L. And Vitex Negundo L.)
Thamaraiselvi,Ezhilarasu,Gajendiran
Golden Research Thoughts , 2013, DOI: 10.9780/22315063
Abstract: Plants have proved to be significant natural resources for medicines; documentation of their use in medicine originates from ancient times. Ethnobotanical and ubiguitous plants provide a rich resource for natural drug research and development. In the present investigation, the phytochemical and DPPH activity were high in Lippia nodiflora (Linn.) while antibacterial activity and H2O2 scavenging activity were maximum in Vitex negundo (Linn.) The methanol extract is best solvent for phytochemical and antimicrobial activity of both selected plant against test pathogens. Both plants have been used because of their antimicrobial traits, which are due to compounds synthesized in the secondary metabolism of the plant; such as phenols, terpenoids, alkaloids and flavonoids. Synergism between plant extract and synthetic antibiotics can develop standardization of herbal medicine for treatment and prevention of infectious diseases.
Hybrid Fuzzy Controller Based Frequency Regulation in Restructured Power System  [PDF]
P. Anitha, P. Subburaj
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.76065
Abstract: This paper discusses the implementation of Load Frequency Control (LFC) in restructured power system using Hybrid Fuzzy controller. The formulation of LFC in open energy market is much more challenging; hence it needs an intelligent controller to adapt the changes imposed by the dynamics of restructured bilateral contracts. Fuzzy Logic Control deals well with uncertainty and indistinctness while Particle Swarm Optimization (PSO) is a well-known optimization tool. Abovementioned techniques are combined and called as Hybrid Fuzzy to improve the dynamic performance of the system. Frequency control of restructured system has been achieved by automatic Membership Function (MF) tuned fuzzy logic controller. The parameters defining membership function has been tuned and updated from time to time using Particle Swarm Optimization (PSO). The robustness of the proposed hybrid fuzzy controller has been compared with conventional fuzzy logic controller using performance measures like overshoot and settling time following a step load perturbation. The motivation for using membership function tuning using PSO is to show the behavior of the controller for a wide range of system parameters and load changes. Error based analysis with parametric uncertainties and load changes is tested on a two-area restructured power system.
Integral Performance Criteria Based Analysis of Load Frequency Control in Bilateral Based Market  [PDF]
P. Anitha, P. Subburaj
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.76086
Abstract: Performance index based analysis is made to examine and highlight the effective application of Particle Swarm Optimization (PSO) to optimize the Proportional Integral gains for Load Frequency Control (LFC) in a restructured power system that operates under Bilateral based policy scheme. Various Integral Performance Criteria measures are taken as fitness function in PSO and are compared using overshoot, settling time and frequency and tie-line power deviation following a step load perturbation (SLP). The motivation for using different fitness technique in PSO is to show the behavior of the controller for a wide range of system parameters and load changes. Error based analysis with parametric uncertainties and load changes are tested on a two-area restructured power system. The results of the proposed PSO based controller show the better performance compared to the classical Ziegler-Nichols (Z-N) tuned PI andFuzzy Rule based PI controller.
Projection of the Semi-Axes of the Ellipse of Intersection  [PDF]
P. P. Klein
Applied Mathematics (AM) , 2017, DOI: 10.4236/am.2017.89097
Abstract:
It is well known that the line of intersection of an ellipsoid and a plane is an ellipse (see for instance [1]). In this note the semi-axes of the ellipse of intersection will be projected from 3d space onto a 2d plane. It is shown that the projected semi-axes agree with results of a method used by Bektas [2] and also with results obtained by Schrantz [3].
太古宙绿岩带金矿区域预测准则
д.в.Pундцвист
黄金科学技术 , 1991,
Abstract:
Land Use and Land Cover Changes in a Tropical River Basin: A Case from Bharathapuzha River Basin, Southern India  [PDF]
P. P. Nikhil Raj, P. A. Azeez
Journal of Geographic Information System (JGIS) , 2010, DOI: 10.4236/jgis.2010.24026
Abstract: A study of the spatial and temporal changes in land use and land cover (LULC) was conducted using Remote Sensing and GIS. We analyzed the LULC of Bharathapuzha river basin, south India using multispectral LANDSAT imageries of 1973-2005 time periods. 31% depletion in the natural vegetation cover and 8.7% depletion in wetland agriculture area were seen in the basin during the period. On the other hand the urban spread in the basin increased by 32%. The study highlights the need for a scientific management plan for the sustainability of the river basin, keeping in view the recent climatic anomalies and hydrological conditions of the basin.
Morphometric Analysis of a Tropical Medium River System: A Case from Bharathapuzha River Southern India  [PDF]
P. P. Nikhil Raj, P. A. Azeez
Open Journal of Modern Hydrology (OJMH) , 2012, DOI: 10.4236/ojmh.2012.24011
Abstract: Baseline morphometric information at a sub basin level is essential to develop appropriate strategy for sustainable, socially acceptable, ecologically benign and economically viable development of a river basin. The present study was carried out in one of the less studied Bharathapuzha river basin (BRB), the second longest river in the state of Kerala, India. The annual discharge of the river is 3.94 km3. Nevertheless the basin, which receives about 1828 mm of annual rainfall, in recent years has been facing dearth of water. We used GIS and RS tools to study the morphometric characteristics of the basin. The seventh order main river is formed by several lower order streams forming a dentritic flow pattern. Basin geology, slope and rainfall pattern in the basin determine the morphometric characteristics of the basin. The linear aspects of the basin including stream length ratio and bifurcation ratio indicate the role of relief in the basin while the areal ratios indicate the elongate nature of the basin.
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