This paper presents stability analysis of asymmetrical stator faults in electric motors. The study was carried out using Finite Element Analysis solver. The motor was simulated for 2 cases; healthy motor and motor with asymmetrical fault. Asymmetrical fault occurred at 0.4s and lasted for 0.2s after which the motor later regained stability. The graphics of the torque showed that the loaded motor oscillates around 315.2 Nm when the fault occurred and settled at 20 Nm after 0.6s. It was also observed that the speed dropped slightly and oscillates around 1420 rpm after 0.2s when load was connected and went into generating mode immediately asymmetrical fault occurred and regained stability after 0.6s while the speed of the unloaded motor remained unchanged. The phase currents of the loaded motor increased to 14.1690 A at 0.2s and further increased to about 141.2 A as a result of asymmetrical fault at 0.4s and later maintained a steady state stability of 14.1690 A after 0.6s when the fault was removed. The magnetic saturation areas were observed in both cases.

Key words: Asymmetrical faults, FEA Simulations, Loading conditions, Stability, , Three-phase induction motor.

[1]. Rezazadeh, M., Marium, N., Marhaban, M.H. and Misron, N, Fourier analysis of motor current bars in squirrel-cage induction machines, Proceedings of IEEE Student on Research and Development (SCORed 2010), Putrajaya, Malaysia.
[2]. Ceban, A. Pusca, R. Romary, R., Study of rotor faults in induction motors using external magnetic field analysis, IEEE Transactions on Industrial Electronics, vol. 59, No. 5, 2012, 2082- 2093.

[3]. Bouzid, M. and Champenois, G., An efficient, simplified multiple coupled circuit model of the induction motor aimed to simulate different types of stator faults, Mathematics and computers in simulation, vol. 90, 2013, 98-115.
[4]. Arumugam, P. Hamti, T. and Gerada, C., Modeling of different winding configurations for fault-tolerant permanent magnet machines to restrain inter-turn short-circuit current, IEEE Transactions on Energy Conversion, vol. 27, No. 2, 2012, 1354-1371.
[5]. Wiem, Z., Yemna, B., and Hafedh, T., Analysis of Induction Motor with Stator Winding Short-circuit Fault by Finite Element Model, International journal of scientific research and engineering technology, vol 3, 2012, 53-58.

Wind power is the widely used renewable source of energy specially doubly fed induction generators (DFIG) when operated in parallel units disbalances the grid profile in a grid connected mode. Hence a proper control strategy has to be employed to maintain voltage unbalance and harmonics at the point of common coupling (PCC). In this paper a PI controller based converter is designed to assist the grid connected operation of parallel DFIG units. The controller integrates the unit with grid and regulates the voltage at PCC also it reduces the harmonics of the system. The proposed controller has been tested for constat wind speed as well as variable wind speed operation. Also the system has been analyzed for the loading conditions and fault to check the operability of the controller.

[1]. X. Zeng, J. Yao, Z. Chen, W. Hu, Z. Chen, and T. Zhou, "Coordinated control strategy for hybrid wind farms with PMSG and FSIG under unbalanced grid voltage condition," IEEE Trans. Sustain. Energy, vol. 7, no. 3, pp. 1100–1110, Jul. 2016.
[2]. Y. Wang and L. Xu, "Compensation of network voltage imbalance using doubly fed induction generator-based wind farms," IET Renew. Power Gen., vol. 3, no. 1, pp. 12–22, Mar. 2009.
[3]. Y. Wang and L. Xu, "Coordinated control of DFIG and FSIG-based wind farms under unbalanced grid conditions," IEEE Trans. Power Del., vol. 25, no. 1, pp. 367–377, Jan. 2010.
[4]. H. Nian, T. Wang, and Z. Q. Zhu, "Voltage imbalance compensation for doubly fed induction generator using direct resonant feedback regulator," IEEE Trans. Energy Convers., vol. 31, no. 2, pp. 614–626, Jun. 2016.
[5]. T. Wang and H. Nian, "Flexible PCC voltage unbalance compensation strategy for autonomous operation of parallel DFIGs," in Proc. IEEE Energy Convers. Congr. Expo., Milwaukee, WI, 2016, pp. 1–6.

Multi-functionality in converters are drawing attention of researchers, since it is the main link of grid tied solar system. A lot of ongoing research has been reported in literature for auxiliary services on power quality improvement through multi-functional grid-tied (MFGT) converters. These converters can perform dual work of interfacing solar system with the grid and also conditions the power at point of common coupling. The state-of-the-art of the converter is its design feature which optimally achieve the multi-functionality, hence presents a cost effective solution to power quality issues. A Grid connected solar system for radial distribution system is designed, which is capable of injecting active power into the grid with its inherent advantages to mitigate the Power Quality Issues.

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[4]. M. Hosenuzzaman, N. A. Rahim, J. Selvaraj, M. Hasanuzzaman, A. B. M. A. Malek, and A. Nahar, ―Global prospects, progress, policies, and environmental impact of solar photovoltaic power generation,‖ Renewable & Sustainable Energy Reviews, vol. 41, no. 0, pp. 284–297, Jan,2015.
[5]. S. J. Steffel, P. R. Caroselli, A. M. Dinkel, J. Q. Liu, R. N. Sackey, and N. R. Vadhar, ―Integrating solar generation on the electric distribution grid,‖ IEEE Transactions on Smart Grid, vol. 3, no. 2, pp. 878–886, Jun. 2012.

The Standardized 4th Generation Mobile Communication, Long Term Evolution (LTE) Provides High Data Rates To Meet The Growing Demands Of The Users. The High Data Rates Provided By UE Of LTE Introduce Excessive Power Consumption. Power Saving Is The Major Issue In The Present Scenario Of The LTE Due To The Usage Of The User Equipment (UE) For All Applications. Discontinuous Reception (DRX) Mechanism Is One Of The Good Techniques For Tackling This Issue. Delay Constraint And Power Saving Are Two Contrasting Performance Metrics Connected With The DRX Mechanism. In This Paper, The Performance Comparison Between 3 State And 4 State DRX Mechanisms Incorporated With The On Time To Short Cycle Ratio (OTSC) Is Done. Performance Comparison Is Made For Different OTSC Ratios And Found That 4 State Model With OTSC Has Better Performance Than That Of The 3 State Model With OTSC. The Simulation Tool Used Is MATLAB R2014a.

Keywords: LTE; Power Saving; DRX; OTSC Ratio; Delay

[1]. Scott Fowler, Ahmed Omar Shahidullah, Mohammed Osman, Johan M. Karlsson And Di Yuan "Analytical Evaluation Of Extended DRX With Additional Active Cycles For Light Traffic", International Journal Of Computer Networks (COMNET), Elsevier, Vol. 77, No. 11,Pp. 90-102, February 2015.

[2]. F. Khan, "LTE For 4G Mobile Broadband: Air Interface Technologies And Performance", Cambridge University Press, Apr. 2009.
[3]. Y. Y. Mihov, K. M. Kassev, And B. P. Tsankov, "Analysis And Performance Evaluation Of The DRX Mechanism For Power Saving In LTE," In Proceedings Of IEEE 26th Convention Of Electrical And Electronics Engineers,Israel,Pp. 520, Nov. 2010.
[4]. L. Zhou, H. Xu, H. Tian, Y. Gao, L. Du, L. Chen, "Performance Analysis Of Power Saving Mechanism With Adjustable Drx Cycles In 3gpp LTE", IEEE Vehicular Technology Conference (VTC–Fall),Pp. 1–5, 2008.
[5]. C. Bontu, E. Illidge, "DRX Mechanism For Power Saving In LTE", IEEE Communications Magazine, Vol. 47, No. 6, Pp. 48–55, 2009.

In the present research program, the status of pollution of water of a major river namely Mahanadi of Odishahas been analyzed. In the selected study area, the River Mahanadi is receiving a considerable amount of industrial wastes and witnessing a considerable amount of human and agricultural activities.Nineteen samples were collected along the entire stretches of the river basin during the period from January-2000 toDecember-2017 on the first working day of every month. In the selected research area, the River is receiving the domestic, industrial, and municipal waste waters/effluents all along its course [1]. Various physico-chemical parameters like pH, Nitrate (NO₃), Total Dissolved Solids (TDS), Boron, Alkalinity, Calcium, Magnesium, Turbidity, Chloride Clˉ) , Sulphate (SO₄²ˉ), Fluoride(Fˉ) and Iron(Fe) etc. were analysed. The present study indicates that the water quality of Mahanadi River is well within tolerance limit taking the physico-chemical parameters into considerations.............

Keywords: Mahanadi River, Physico-chemical parameters, pH, TDS, Alkalinity, Tolerance limit.

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Nanocrystalline Al doped lithium ferrite (Li0.5Fe2.3Al0.2O4) thin film was deposited on ultrasonically cleaned glass substrate by spray pyrolysis technique. Lithium nitrate (Li (NO3)2 6 H2O), aluminum nitrate (Al (NO3)3 9 H2O) and ferric nitrate (Fe (NO3)3 9 H2O) were taken as a raw material. The molarity of the metal nitrates i.e. (Li + Al) : (Fe) was taken as 1:5 and volumetric ratio as 1:1. The glass substrate on which the film is deposited was preheated at temperature 375C. The deposited film was annealed at 550C for 4 h. The annealed film was characterized by X-ray diffraction method for structural analysis. The XRD analysis revealed the formation of cubic spinel structured film with average crystallite size 16 nm and lattice constant 8.333 Å. The optical properties such as optical bandgap and excitation wavelength were determined by UV-Vis and Photoluminescence spectroscopy respectively. The experimental results suggest that, the prepared Al doped lithium ferrite thin film can be useful for optoelectronic applications.

Keywords: Spray pyrolysis; Lithium ferrite; Al doping; XRD; UV-Vis-PL

[1]. Kharat PB, Somvanshi SB, Kounsalye JS, Deshmukh SS, Khirade PP, Jadhav K. Temperature dependent viscosity of cobalt ferrite/ethylene glycol ferrofluids. AIP Conference Proceedings: AIP Publishing; 2018. p. 050044.
[2]. Kale SB, Somvanshi SB, Sarnaik M, More S, Shukla S, Jadhav K. Enhancement in surface area and magnetization of CoFe2O4 nanoparticles for targeted drug delivery application. AIP Conference Proceedings: AIP Publishing; 2018. p. 030193.
[3]. Kharat PB, More S, Somvanshi SB, Jadhav K. Exploration of thermoacoustics behavior of water based nickel ferrite nanofluids by ultrasonic velocity method. Journal of Materials Science: Materials in Electronics 2019:1-11.
[4]. Khedkar MV, Somvanshi SB, Humbe AV, Jadhav K. Surface modified sodium silicate based superhydrophobic silica aerogels prepared via ambient pressure drying process. Journal of Non-Crystalline Solids 2019;511:140-6.

The Calenders are made to be used as a sheet forming equipment and have the purpose and needs to supply some activities of industrial projects, as well as the manufacture of various equipments and products in which they need Curved or calendered plates. With Intuit demonstrates a way to obtain a deformation in the material and accomplish the desired goals. For this to give an emphasis on this process of mechanical conformation and show how easy it is to get a simple plate calendering simply, only with a mechanical machine that assists in the calendering of them.

[1]. ABNT 6175 (NBR 1971 p.2) processos mecânicos de usinagem
[2]. COSTA, M. B. S. Tecnologia de Caldeiraria. Duque de Caxias: Escola Técnica Atenew, 2010. p.100. Duque de Caxias – RJ. Disponível em: http://pt.scribd.com/doc/52339271/Tecnologia-de-Caldeiraria#page=24.
[3]. GONZÁLEZ, P. C. S. Técnica não Convencional para Dobramentos de Tubos de Parede Fina Usando Elastômero.Instituto Tecnológico de Aeronáutica. Tese apresentada à Divisão de Pós-Graduação, p.150, 2000. São José dos Campos – SP.Disponívelem:http://161.24.11.4/tesesdigitais/000444759.pdf. Acessado em 20/08/19
[4]. IFSC (Instituto federal Santa Catarina) - Processo usinagem Disponível em: http://docente.ifsc.edu.br/julio.silveira/MaterialDidatico/Pend%C3%AAncias/Processos%20de%20fabrica%C3%A7%C3%A3o/Introdu%C3%A7%C3%A3o%20e%20fundi%C3%A7%C3%A3o/Aula%201.pdf

A genome is the collection of DNAs that comprises an organism Each individual organism's genome contains the genes and other DNA elements that ultimately define its identity. Genomes range in size from the smallest viruses, which encode fewer than 10 genes, to eukaryotes such as humans that have billions of base pairs of dans encoding tens of thousands of genes. The recent sequencing of genomes from all branches of life including viruses, bacteria, archaea, fungi, nematodes, plants and humans presents us with an extraordinary moment in the history of biology. By analogy, this situation resembles the completion of the periodic table of the elements in the nineteenth century. As it became clear that the periodic table could be arranged in rows and columns, it became possible to predict the properties of individual elements.............

Keywords: DNA, EST ,Genome, Gene, Genome Sequence, Hemochromatosis.

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