iosr-JMCE   Volume-11 ~ Issue-3 ~ May-June 2014

Abstract: This study deals with reviewof mechanical properties of epoxy matrix using Nano ceria (ceo2) as filler in metal oxide epoxy Nano composites. Effect of varying wt. % of ceria filler on mechanical properties of epoxy matrix was studied.Flexural strength,Compressive strength,Vickers micro-hardness and Density were studied for varying wt % of ceria filler. As the wt. % of ceria is increased, the mechanical properties showed improvement till a maximum value and then, these properties decreased with further increase Nano filler content. However,density continued to increase with increase in wt % of ceria,compared with commercial ceria filled composites, the composites made with, morphology-controlled ceria show a higher impact strength. This paper also presents a new research proposal for future study.

Keywords: Nano ceria particles, Ceria epoxy Nano composites, Mechanical properties.

[1]. DiMonti, R. and Kaspar, J. On the role of oxygen storage in the three-way catalysis Top.Catal.2004, 28, 47-57.
[2]. Hirst, S.M.; Karakoti, A.S.; Taylor, R.D.; Sriranganathan, N.; Seal, S. and reilly, C.M.; Anti-inflammatory properties of cerium oxide nanoparticles.
[3]. Mogeensen, M.; Sammes, N.M. and Tompsett, G.A. Physical chemical and electrochemical properties of pure and doped ceria .Solid State Ionics, 2000, 129, 63-94.
[4]. Rossinyol, E.; Arbiol, J.; Peiro, F.; Cornet, A.; Morante , J.R.; Tian, B.; Bo,T. and Zhao, D. Nanostructured metal oxides synthesized by hard template method for gas sensing applications. Sensor Actuat B-Chem.2005, 109,57-63.
[5]. Feng,X.D.; Sayle ,D.C.; wang ,Z.L.; Paras, M.S.; Santora, B.; Sutorik, A.C.; Sayle ,T.X.T.; Yang, Y.; Ding ,Y.; Wang,X.D.; Her,Y.S. Science 2006,312,1504-1508.

Abstract: The Montreal Protocol has sealed the use of Halogenated Hydrocarbons; Keeping in view they affect the environment in the form of Ozone layer depletion and Global warming. Thus one of the major thrust areas is to identify substitute of Halogenated Hydrocarbons, especially CFCs. The substitute refrigerant should be eco-friendly, chemically stable and C-134a a is currently the leading alternative to CFC-12. Other promising substitutes are R-507as a binary mixture of R-143a &R-125.R-407c is a ternary mixture of R-134a, R-32 andR-125.R404a is a binary mixture of R143a &R-125a. In this paper, performance evaluation of eco-friendly alternate refrigerant R-507, R-407c for replacing CFC12 has been done and a suitable alternative refrigerant for retrofitting has been identified. Keywords: Ozone depletion; Montreal protocol; eco-friendly refrigerant; hydrocarbon refrigerant; retrofitting

[1]. "Montreal protocol on substances that deplete the Ozone Layer" UNEP 2006 Report of the refrigeration, air conditioning and heat pumps technical options committee, 2006 Assessment.
[2]. www. refrigerants.dupont.com, USA for thermodynamic tables of R-423a and R- 413a
[3]. "Thermodynamic study of a ternary Isotropic mixture for Vapour Compression systems", Bansal V K, Mechanical Engineering Department, IIT Delhi 1990.
[4]. Analysis of Vapour Compression Refrigeration system for Domestic Refrigerator Using Eco-Friendly Hydrocarbon Mixture", Sameer Vida MechanicalEngineering Department, JEC Jabalpur 2002.

Abstract: Koradi is one of the thermal power stations in Maharashtra. It receives water from a lake located nearby to KTPS. This lake is surrounded by large number of small scale industries, Mahalaxmi Devi temple and slums. KTPS receives water from this lake for its daily use and for the production of electricity from coal. The wastewater from the nearby colonies is directly discarded to the lake. Hence water analysis of the lake is done. The quality of the water is analyzed and compared with the CPCB and CPHEEO standard desirable limits.

[1]. Sanyogita R. Verma, P.R. Chaudhari, R.K.Singh and S.R Wate; Studies on the Ecology and Trophic Status of An Urban Lake At Nagpur City, India Vol.4, No.3 pp 652-659; 2009.
[2]. Vyankatesh B. Yannawar and Arjun B. Bhosle; Cultural Eutrophication of Lonar Lake, Maharashtra, India; International Journal of Innovation and Applied Studies ISSN 2028-9324 Vol. 3 No., pp. 504-510; 2 June 2010.
[3]. Mushini Venkata Subba Rao; Assessment of quality of drinking water at Srikurmam in Srikakulam District, Andhra Pradesh, India; International Research Journal of Environment Sciences, pp 201-207, 2010.
[4]. Dr. D. H. Pawar; Physico-chemical status of the water of historical lakes and tanks in Kolhapur city; Research Paper; 2010.
[5]. M. Sunleena; Water and Sediment Analysis of Hussain Sagar Lake, Hyderabad, India, The 12th World Lake Conference; 304-306; August 2005.

Abstract: This project is to help small-scale farmers to meet an increased demand for local grains, by designing a reaper machine to harvest grains more efficiently. Our research work will focusing on ease of harvesting operation to the small land holders for harvesting varieties of crop in less time and at low cost by considering different factors as power requirement , cost of equipment , ease of operation , field condition , time of operation and climatologically conditions. The operating, adjusting and maintaining principle are made simple for effective handling by unskilled operators.

Keywords: Cost of equipment is low , ease of operation , not having limitations of field condition , time of operation and climatologically conditions.

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