High Performance of CSI Fed IM Drives at Low Speed operation with MRAS Based Estimation of Stator Resistance

This paper is proposed to improve the performance of sensorless vector controlled CSI fed induction motor drives during low-speed operations. In general the performance of sensorless vector controlled induction motor drives is poor at very low speed due to stator resistance variations and the estimated flux and torque deviates from its set value. Therefore online tuning of the stator resistance is necessary at very low speed. The performance and efficiency of an induction motor drive system can be enhanced by online tuning of stator resistance. A novel model reference adaptive system (MRAS)-based algorithm for simultaneous identification of stator resistance (Rs) and rotor speed (ðŽr) implemented in sensorless Field oriented controlled CSI fed induction motor. The reference model and adjustable model are interchangeable for concurrent ðŽr and Rs estimation in the low-speed operating region is investigated. The simulation and experimental results are proved that the proposed method is improving the performance of the drive system at low speed operation

FACTORS AFFECTING THE PERCEPTIONS OF PILGRIM TOURISTS IN SELECTION OF ACCOMMODATION AND TRANSPORTATION: A CASE STUDY OF GOLDEN TEMPLE, VELLORE CITY, TAMIL NADU, INDIA

Purpose of the study: This empirical study aims to identify the perceptions of pilgrim tourists’ regarding their accommodation and transport facilities in the Golden Temple, Vellore city, Tamil Nadu, India. Methodology: This study used both primary and secondary data for data collection among pilgrim tourists. Data were later on analyzed using SPSS statistical tools like percentage, Chi-square, ANOVA using Statistical Package for Social Sciences were applied. Results: The findings of the study indicate that the income of the family doesn’t relate to accommodation facilities and the age of the respondents was affected by the transport facilities in Vellore City. Applications of this study: The study brings to highlights the basics of accommodation and transportation and the factors affecting the perception of pilgrim’s tourists. It concludes that the age of the respondents affects the transport facilities in Vellore City. The transportation facilities should be improved for the tourists to attract and improve pilgrim tourism. Novelty/Originality of this study: The study has found that the tourists had sufficient maturity, education and good exposure about their destination. The study found that accommodation facilities such as comfort, peace, safety and security, attitude and behavior of staff, and sanitation and hygiene are not more satisfied. Transport facilities such as Signboard, street lights, traffic rules have to be improved

Study of Death Incidence by Insecticide Poisoning in Salem

Background: Insecticide poisoning is a major public health problem in the world, particularly in developing nations, its usage has increased in recent and past thus increased even its misuse to commit suicide. Methods: This retrospective study was carried out at department of  Forensic Medicine & Toxicology, Govt. Mohan Kumaramangalam Medical College  Hospital  Salem, Tamil Nadu, India with the insecticide poisoning cases from the year of 2008 and 2009. Age from 6 months old foetus to 80 years. All collected data was analyzed in SPSS software. Results: During this study period a total 2871 Medico legal autopsies were conducted, amongst them poisoning cases constitutes 372 (12.9%) cases, out of these 93 (25%) other poisoning cases, 279 (75%) cases were due to fatal insecticide poisoning. Conclusion: During the period of 2008 & 2009 there are 260 number of cases were reported as suicidal poisoning by insecticides out of 279 cases. Males were outnumbered with 170 cases and females were 109 cases. More number of the cases were found in the age group of 21–30 years(82) followed by 31-40 years (68). Peak period of deaths by poisoning more in nos. in the month of May & June. Most victims were from rural area, married population outnumbering the married. There are 212 (74.98%) victims were from rural area while 67(24.01%) were from urban area and 223 (79.92%) were married, 56 (20.07%) were unmarried. Key words :Insecticide poisoning; organophosphates; chemical report; Tik-20; follidol, suicide

Water users' association in Vagaikulam Tank, North Kodaimelalagian Channel, Tambraparani Project: Farmers' experience

Water users' associationsIrrigation programsTank irrigationOpen channels

ANA immunofluorescence versus profile-how well they perform in autoimmune diseases: an analysis of their clinical utility in a tertiary care centre

Background: While Immunofluorescence assay remains the gold standard for the detection of ANA, Immunoprofile by ELISA is being increasingly utilized in view of easy availability and quick results. The study was done to find out whether ANA profile results are comparable with IFA.Methods: About 100 patients who had undergone both immunofluorescence and Immunoprofile were included. Immunofluorescence correlation with profile and their correlation with the disease were analyzed; sensitivity, specificity and predictive values were calculated.Results: ANA was positive in 78% by immunofluorescence; 73% by ANA profile. 22 patients in whom ANA IFA was negative were picked up by ANA profile. 27 patients who were not detected by ANA profile were tested positive by IFA. ANA testing by immuno profile had a sensitivity of 65% with a positive predictive value of 69% when compared with IFA. Immunofluorescence pattern and ANA profile correlated with the diagnosed disease in 63% and 49% respectively. Immunofluorescence pattern correlated with the ANA profile in only 35% of the study subjects. On correlation with the disease, ANA profile scored less compared to ANA-IFA with a sensitivity and specificity of 46% each; positive predictive value of 59%; negative predictive value of 33%. On analysis of individual disease, ANA profile is as good as IFA in SLE and scleroderma in terms of sensitivity. In Sjogren’s syndrome and MCTD, specificity and positive predictive value of ANA profile is high.Conclusions: ANA IFA performs better than immunoprofile in the diagnosis of autoimmune diseases

Water-driven structural transformation in cobalt trimesate metal-organic frameworks

We report on the synthesis and the characterization of a novel cobalt trimesate metal-organic framework, designated as KCL-102. Powder X-ray diffraction pattern of KCL-102 is dominated by a reflection at 10.2\u25e6 (d-spacing = 8.7 \uc5), while diffuse reflectance UV-Vis spectroscopy indicates that the divalent cobalt centers are in two different coordination geometries: tetrahedral and octahedral. Further, the material shows low stability in humid air, and it transforms into the well-known phase of hydrous cobalt trimesate, Co3 (BTC)2\ub712H2O. We associated this transition with the conversion of the tetrahedral cobalt to octahedral cobalt

In-Cabin Radar Monitoring System: Detection and Localization of People Inside Vehicle using Vital Sign Sensing Algorithm

Radars are used in automobiles for various functionalities, starting from the obstacle alarm during vehicle reversing to advanced functionalities like autonomous driving. A practical method for monitoring people inside a vehicle for various applications (surveillance, safety, etc.) could be built using Radar. This paper presents the embedded implementation of a vital sign sensing algorithm using the radar signal processing (RSP) technique. MEX (MATLAB executable) interface is performed with the embedded C code of the vital sign sensing algorithm generated for validating the results with the RSP technique. Finally, Unit testing is performed on the developed embedded C code of the vital sign sensing algorithm to remove the dead codes and to verify whether all branches and statements in a developed algorithm are working accordingly. The embedded C code results were found to be matching precisely with the RSP technique. With the help of obtained results, we can differentiate between an adult and a baby inside a vehicle

Pulmonary hypertension in pregnancy

Pulmonary hypertension is defined as an increase in mean pulmonary arterial pressure (mPAP) ≥25 mmHg at rest as assessed by right heart catheterisation. Pulmonary hypertension in pregnancy is known to be associated with significantly high morbidity and mortality rate which ranges between 30% and 56%. So during pregnancy, efforts to be made to diagnose common medical ailments that can be complicated by pulmonary hypertension. Bedside 2D Echo and thoracic ultrasound are the strongly recommended in these patients to diagnose early and prevent the devastating complications. Relevant blood investigations need to be sent to diagnose the underlying etiology and to assess the prognosis. Cardiac catheterization is the gold standard investigation of choice for pulmonary hypertension. But it is 1 performed in very few cardiac centres in developing countries. In India diagnosis largely depends on echocardiography. It should be made clear to women at the time of their PAH diagnosis that pregnancy is not recommended due to the high maternal and fetal risks. If a woman with known PHT become pregnant, counselling should be given for therapeutic abortion. If they are willing for therapeutic abortion, it should be done before 22 weeks of gestation. All women with PHT should be initiated on PAH specific therapies (prostanoids, ccbs, phosphodiesterase inhibitors) except endothelin receptor blockers as it is teratogenic. Pregnancy in PAH is difficult to manage and needs mutidisciplanary team. Pregnancy is not recommended in women with PAH and appropriate counselling to be done to the mother and their relatives.

Soil organic carbon stock in natural and restored mangrove forests in Pichavaram south-east coast of India

801-808Mangrove ecosystem is one of the important coastal ecosystems providing ecological security of the coastal area and livelihood security to the coastal fishermen.  Besides it plays an important role in carbon sequestration as large amount of carbon is stored in the below ground biomass. The role of mangrove restoration in carbon stocking has not been studied comprehensively either globally or nationally. The aim of the present study is to quantify the soil organic carbon stock and carbon sequestration rate of the different age groups of restored and natural stands of Pichavaram mangroves forest. The soil organic carbon stock of the upper soil layer (0–90 cm) of six different sites from natural mangrove stands, 21years, 17 years, 16 years, 15 years and 12 years old stands were 146.1(Mg C ha-1), 99.29 (Mg C ha-1), 93.18 (Mg C ha-1), 57.41 (Mg C ha-1), 95.54 (Mg C ha-1) and 84.84 (Mg C ha-1), respectively. Carbon sequestration rate of Pichavaram mangrove forests ranged from 2.33 to 4.44 g C m-2 year-1. The result of the study reveals that soil organic carbon stock and burial rate were high in natural mangrove area than the restored areas. In this regard, restoration and rehabilitation of mangroves is required for preserving the ecologically important mangroves ecosystem to mitigate the impacts of climate change