ELEVEN LEVEL INVERTER DESIGN WITH DVR FOR DISTRIBUTION ENERGY SYSTEM

 In this paper with flexible AC transmission system capability is implemented. The proposed inverter is placed between the wind turbine and the grid, same as a regular WEI, and is able to regulate active and reactive power transferred to the grid. This inverter is equipped with dynamic voltage restorer option in order to control the power factor  of  the local feeder lines. The goal of this project is to introduce new ways to increase the penetration of renewable energy systems into the distribution systems. This will encourage the utilities and customers to act not only as a consumer, but also as a supplier of energy.Â

Sound-Speed Prediction as a Function of Temperature at Discrete Depths in the Bay of Bengal

Through regression analysis, temperature dependent relationships are developed to predict sound-speed. at discrete depths in the Bay of Bengal, thereby demonstrating the feasibility of sound-speed prediction through polynomial expressions in temperature disregarding salinity variations. A separate regression equation is develbped for the historical sound-speed and temperature data at the standard depths upto 250 m. At specific depths and in the given geographic area in the Bay of Bengal (5-8" N, 90-93" E) polynomials of temperature are proved to be a precise way to predict sound-speed

Efficacy of Modified Task Oriented Exercises Performed on a Swiss Ball Over Conventional Task Oriented Exercise on Improving Balance among Chronic Stroke Patients

BACKGROUND AND OBJECTIVE: Studies had reported wide variation in the components of physiotherapy treatment provided to stroke patients among different setting. Therapist belief on motor development and prognosis of the condition can influence the selection of treatment techniques in the management of stroke patients .The primary aim of the study was to know the Efficacy of modified task oriented exercises performed on a swiss ball over conventional task oriented exercises on improving balance among chronic stroke patients. METHODS: Rehabilitation clinics across Chennai was chosen for this study in that total of 20 patients was taken .each group assigned 10 and 10 patients. Group 1:10 patients 60 minutes receiving task oriented exercise on swiss ball in sitting, kneeling, qudripod and standing Group 2 : 10 patients, 60 minutes receiving task oriented exercise only in sitting, kneeling, qudripod and standing. Procedure was done with the supervision of chief therapist. RESULTS: Twenty patients were taken for the treatment. In that, The inferential statistical results of Independent ‘ t ’ test for the intergroup comparison of Berg Balance Scale score had shown the ‘ t ’ value of 3.64 ( p-value= 0.01) and intergroup comparison of River mead Mobility Index score had shown the ‘ t ’ value of 3.57 (p-value=0.01) (Table 5). CONCLUSION: From the study it can be concluded that the modified task oriented exercises performed on a swissball was more effective than conventional task oriented exercise performed

Assessment of water quality status in the inland lakes of Coimbatore, Tamil Nadu, India

1280-1285In this study, the physical, chemical and biological characteristics of the surface water of various inland lakes situated in Coimbatore have been analysed. The physico-chemical and biological parameters, such as pH, TDS, electrical conductivity, total hardness, chlorides, sulphates, sodium, potassium, BOD, COD, total alkalinity and E. coli concentration were analysed. The water quality of Selvampathy lake has drastically reduced as TDS, total hardness, BOD and COD values are beyond the permissible limit for this lake. This is due to discharge of industrial effluents and dumping of solid wastes. The chloride concentration of all the lakes has increased considerably. The low sulphate concentration in all these lakes indicates that there is no agricultural runoff and animal wastes being dumped into these lakes. The BOD concentration of Ukkadam lake has increased by an order of magnitude within the past three years. Ukkadam and Selvachintamani lake has faecal contamination as the E. coli concentration is beyond the permissible limit. The degradation of the quality of these lakes poses a major threat for the aquatic biota, public health and ground water quality

Ultrasonicated synthesis of some potent antimicrobial aryl sulphonamides

1373-1377Nine N-(2,4-difluorophenyl) substituted benzene sulphonamides have been synthesized by ultrasonication method within short reaction time having more than 90% yield. These sulphonamides have been analyzed by spectral and analytical techniques. The higher yields of sulphonamides have been found to be in case of ultrasonication process as compared to microwave and conventional heating methods. The antimicrobial activities of these sulphonamides have been evaluated using Bauer-Kirby disc diffusion method by means of measurement of mm of zone of inhibition

Growth performance of spiny lobster, Panulirus homarus (Linnaeus, 1758)

812-819The present study was undertaken to evaluate the growth performance, biochemical composition, feed utilization and water quality parameters of spiny lobster, Panulirus homarus in indoor culture. The fattening experiments was carried out with five different fresh feeds viz. green mussel, clam, oyster, trash fish and pellet feed. Indoor experimental culture of juvenile lobster, Panulirus homarus lasted for 75 days to find better growth rate and survival. There was a reasonable change in the carapace length and weight of lobsters fed with clam and green mussel. Their Biomass was significantly better than other three feeds viz. oyster, pellet feed and trash fish. The spiny lobster, Panulirus homarus fed with clam, green mussel and oyster can increase the size of carapace length compared with the trash fish and pellet fed one. The maximum growth performance was seen during the 75th day on the clam fed experiment which was found to be ranged between (6.7 ± 0.02 - 7.2 ± 0.03 cm) in carapace length, (6.1 ± 0.1 - 6.7 ± 0.08 cm) in body length, (12.8 ± 0.03 - 13.8 ± 0.08 cm) in total length and (105 ± 0.07 - 112 ± 0.08 g) in total weight. The maximum protein content (15.10 ± 0.34 g/100 g), carbohydrate (1.25 ± 0.06 g/100 g), lipids (5.25 ± 0.13 g/100 g) and moisture (76.15 ± 0.9 g/100 g) was noted in clam feed experiment. The maximum feed was also utilized during the clam fed experiment (45.39 ± 0.03 g). The moderate feed utilization were observed during the green mussel fed experiment (42.51 ± 0.02 g). The lowest feed utilization was observed in pellet fed experiment (23.75 ± 0.01 g). The water quality parameters were analyzed in the culture tank before and after the experiment

Finite Element Analysis of Free Vibration of the Delaminated Composite Plate with Variable Kinematic Multilayered Plate Elements

Composite laminates are prone to delamination. Implementation of delamination in the Carrera Unified Formulation frame work using nine noded quadrilateral MITC9 element is discussed in this article. MITC9 element is devoid of shear locking and membrane locking. Delaminated as well as healthy structure is analyzed for free mode vibration. The results from the present work are compared with the available experimental or/and research article or/and the three dimensional finite element simulations. The effect of different kinds and different percentages of area of delamination on the first three natural frequencies of the structure is discussed. The presence of open-mode delamination mode shape for large delaminations within the first three natural frequencies is discussed. Also, the switching of places between the second bending mode, with that of the first torsional mode frequency is discussed. Results obtained from different ordered theories are compared in the presence of delamination. Advantage of layerwise theories as compared to equivalent single layer theories for very large delaminations is stated. The effect of different kinds of delamination and their effect on the second bending and first torsional mode shape is discussed. (C) 2014 Elsevier Ltd. All rights reserved

Antioxidant rich flavonoids from Oreocnide integrifolia enhance glucose uptake and insulin secretion and protects pancreatic β-cells from streptozotocin insult

<p>Abstract</p> <p>Background</p> <p>Insulin deficiency is the prime basis of all diabetic manifestations and agents that can bring about insulin secretion would be of pivotal significance for cure of diabetes. To test this hypothesis, we carried out bioactivity guided fractionation of <it>Oreocnide integrifolia </it>(Urticaceae); a folklore plant consumed for ameliorating diabetic symptoms using experimental models.</p> <p>Methods</p> <p>We carried out bioassay guided fractionation using RINmF and C2C12 cell line for glucose stimulated insulin secretion (GSIS) and glucose uptake potential of fractions. Further, the bioactive fraction was challenged for its GSIS in cultured mouse islets with basal (4.5 mM) and stimulated (16.7 mM) levels of glucose concentrations. The Flavonoid rich fraction (FRF) was exposed to 2 mM streptozotocin stress and the anti-ROS/RNS potential was evaluated. Additionally, the bioactive fraction was assessed for its antidiabetic and anti-apoptotic property <it>in-vivo </it>using multidose streptozotocin induced diabetes in BALB/c mice.</p> <p>Results</p> <p>The results suggested FRF to be the most active fraction as assessed by GSIS in RINm5F cells and its ability for glucose uptake in C2C12 cells. FRF displayed significant potential in terms of increasing intracellular calcium and cAMP levels even in presence of a phosphodiesterase inhibitor, IBMX in cultured pancreatic islets. FRF depicted a dose-dependent reversal of all the cytotoxic manifestations except peroxynitrite and NO formation when subjected <it>in-vitro </it>along with STZ. Further scrutinization of FRF for its <it>in-vivo </it>antidiabetic property demonstrated improved glycemic indices and decreased pancreatic β-cell apoptosis.</p> <p>Conclusions</p> <p>Overall, the flavonoid mixture has shown to have significant insulin secretogogue, insulinomimetic and cytoprotective effects and can be evaluated for clinical trials as a therapeutant in the management of diabetic manifestations.</p