112 research outputs found

    Application of m- polar soft fuzzy bi- partite graph in residence selection process

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    An m−m-polar fuzzy set and soft sets are two different tools for representing uncertainty and vagueness. An m−m-polar soft fuzzy set is a mapping from parameter set to the m−m-polar fuzzy subsets of the universe. An m−m-polar soft fuzzy set theory provides a parameterized point of view for uncertainty modeling and soft computing model. In this paper, we have introduced the notions of m−m-polar soft fuzzy bipartite graph, size and degree of m−m-polar soft fuzzy bi-partite graph as well as an investigation on buying of residence by considering various parameters. People, while buying residence, have many options. So, to choose the best one, they have to consider many parameters. m−m-polar soft fuzzy graph is one of the major areas of graph theory, which finds a solution to this proble

    SYNTHESIS, CHARACTERISATION AND APPLICATION OF PHENOL-FORMALDEHYDE RESIN BLENDED WITH SULPHONATED PHYLLANTHUS EMBLICA, LINN., CARBON

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    Phenol – Formaldehyde Resin (PFR) is blended with Sulphonated Phyllanthus emblica, Linn., Carbon (SPEC) in various proportions by weight percentage (0-50%w/w). A few composite cation-exchangers were prepared by varying the amount of SPEC (a source of cheap and renevable plant material) in the blends from 10 to 50% (w/w). Reaction conditions for the preparation of blends were optimised. IR spectra, TGA traces, and SEM photos were taken for the characterization of  resins. Physico-chemical, properties of the composite resins have been determined. The composites are insoluble in various solvents and reagents and stable towards heat.   Cation exchange capacity (CEC) of the composite resins, decreased with the increasing percentage of SPEC in the blend. Thermodynamic equilibrium constants (lnK) are calculated for H+ - Zn2+ exchanges on the resins having a different amount of SPEC. Thermodynamic parameters are also calculated and suitable explanations are given. The composites up to 20% (w/w) blending retains all the essential properties of the original PFR, since the Phyllanthus emblica, Linn., is the low cost, freely available plant material. Therefore, the composites could be used as low cost ion-exchangers, when SPEC partly replaces the original PFR up to 20% (w/w) blending without affecting the properties of PFR

    GREEN SYNTHESIS OF SILVER NANOPARTICLE FROM LEAF EXTRACT OF AEGLE MARMELOS AND EVALUATION OF ITS ANTIBACTERIAL ACTIVITY

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    Objective: The synthesis of metal nanoparticle is a growing area of research in modern material science and technology. Utilization of the silver nanoparticles in the field of biomedical nanotechnology and nanomedicines is rapidly growing because of their antimicrobial, anticancer, antioxidant property and less toxicity. Nanoparticles are synthesized by chemical methods, but are not eco-friendly. The objective of the study is to develop a fast, eco-friendly and convenient method for silver nanoparticle synthesis.Methods: In this method utilization of the reducingproperty of Aegle marmelos leaf extract was done for synthesis of stable silver nanoparticles.  Characterization of the metal nanoparticles was carried out by UV- Vis spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), X-ray Diffraction microscopy (XRD), Energy Dispersive X-ray spectroscopy (EDX) and zeta potential analysis.Results: This result showed the average particle size of 15 -30 nm and spherical structure of stable silver nanoparticles. Green synthesized nanoparticles tested for its antibacterial activity by the well diffusion method. Silver nanoparticles had shown a more inhibitory effect against Streptococcus pyogenes, Escherichia coli, and Pseudomonas aeruginosa than Staphylococcus aureus and Aeromonas hydrophila at 25, 50 and 100 µg/ml concentrations.Conclusion: This study is recommends the use of Aegle marmelos leaves for the synthesis of silver nanoparticles and can be applied as an antimicrobial agent.Â

    Efficacy of Cereals and Pulses as Feeds for the Post-larvae of the Freshwater Prawn Macrobrachium rosenbergii 

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    Two types of feeds were prepared using cereals (maize, bajra and Italian millet) and pulses (green gram, red gram and cow gram) respectively and fed to the post larvae of M. rosenbergii for a period of 60 days. The efficacy of these feeds on growth performance, biochemical constituents and energy utilization were assessed and compared with commercially available standard Scampi feed. Statistically insignificant differences were seen in weight gain, specific growth rate and conversion rate between control and experiments, and between experiments. However, significant differences (

    DESIGN AND DEVELOPMENT OF ELECTRONIC SYSTEM FOR VALVE ACTUATING MECHANISM BY FUZZY LOGIC IN IC ENGINE

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    The electronics play an important role in modernization of engines. Presently in engine the electronic system are used for fuel ignition, radiator temperature sensing, speed sensing. We have a new idea of introducing electronic system for valve actuating mechanism. We are likely to replace cam shaft with speed sensors, microcontroller and electronic solenoid valves. Here we use the fuzzy logic which is a type of programming based on artificial intelligence. Generally in an IC engine the rotary motion of cam shaft is transmitted to the reduction gear then from there it is taken to the rocker arm and finally to the valves. Due to the presence of more mechanical parts we face friction between them which in turn reduces the efficiency of the engine. So if we use a electronically controlled valve we can increase the efficiency of the engine. There will be wastage of power in the engine as the valve mechanisms are efficient only at the specific stipulated condition. By using the microcontroller powered by fuzzy logic the mechanism can function efficiently for all different speeds. And also high temperature resistant electromagnets are attached end of cylinder and piston. The electromagnet placed in cylinder is triggered by means of alternative pulses. so the exerted force on a piston slightly increases. so the both operations are combined and controlled by means of microprocessors & microcontrollers as far increase the efficiency

    Soil Structure Interaction of Framed Structure Supported on Non- Homogeneity of Soil Condition

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    Soil often exhibits non – homogeneity, due to this non – homogeneity, different settlement occurs. This cause changes in the moments and forces in the members of superstructure frames. The order of magnitude of these changes is not known. In this paper, plane frames with differential configuration have been analysed taking into account soil- structure interaction using Finite Element Method. For the present study soil having different stiffnesses in the right and left half below the structure is considered and the effect of this  non – homogeneity on superstructure forces having presented, for plane frames with number of bays varying from 3,5,7 and number of storeys 1to 6. The young’s modulus ratio of soil for right and left half has been varied from 1 to 7.5. To non – homogeneity of soil increases the forces in peripheral columns and beams, which were found to be already critical even for homogeneity soil condition. Hence, in general, it is concluded at non – homogeneity of soil increases the effect of soil interaction on the super structure forces
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