IJET -Volume 3, Issue 5 , september - october 2017
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Title/Author Name
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Serial No
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1 |
Introduction to Crystal Growth Techniques - B.Subashini , Mrs.Geetha
Abstract
Man had admired crystals for long, as he had appreciated their beauty. The gems and crystals delivered by mother earth have always attracted our mankind, and the belief in the virtues of gems and some minerals dates back to at least two thousand years. The use of gems for ornamental purposes appears to be in practice since the birth of humankind. Today, crystals are the pillars of modern technology. Without crystals, there would be no electronics industry, no photonics industry, no fibre-optic communications, very little modern optical equipment and some very important gaps in conventional production engineering. In the past few decades, there has been a growing interest in crystal growth process, particularly in view of the increasing demand of materials for technological applications (Laudise 1975; Brice1986; Nalwa and Miyata 1996).The significance of crystal growth to electrical engineering, chemistry and physics is illustrated in Figure 1.1. Modern technology requires physicists, chemists, electrical engineers, metallurgists and crystal growers to assist each other at many levels. Crystal growth is a vital and fundamental part of materials science and engineering, since crystals of suitable size and perfection are required for fundamental data acquisition and for practical devices such as detectors, integrated circuits and for other applications. Keyword: crystals, L-histidine, nonlinear optics, second harmonic generation, Barium nitrate. × B.Subashini , Mrs.Geetha , " Introduction to Crystal Growth Techniques" Vol. 3 - Issue 5 ( 1 - 5 ) - september - october 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P1 |
2 |
MHD Viscoelastic Fluid Flow over a Vertical Stretching sheet with nth order of chemical reaction - S.Anuradha , M.Yegammai
Abstract
We have investigated heat and mass transfer in a steady two-dimensional magneto hydrodynamic viscoelastic fluid flow over a stretching vertical surface with nth order chemical reaction. The two-dimensional boundary-layer governing partial differential equations are reduced to ordinary differential equations by using Nactsheim-Swigert shooting technique with sixth order Runge-Kutta iteration Method. e ordinary differential forms of momentum, energy and concentration equations obtained by local similarity transformation are highly nonlinear. The effects of different flow parameters like magnetic field parameter, Prandtl number, buoyancy parameter, Soret number, Dufour number on velocity, temperature and concentration profiles are plotted and discussed numerically and graphically. Keyword: MHD, Viscoelastic fluid, stretching sheet, Boussinesq approximation, Buoyancy force.× S.Anuradha , M.Yegammai , " MHD Viscoelastic Fluid Flow over a Vertical Stretching sheet with nth order of chemical reaction" Vol. 3 - Issue 5 ( 6 - 14 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P2 |
3 |
Introduction to Nonlinear Optics and Crystal Growth Techniques Process - K. Ezhilarasi , M. Murugan
Abstract
Nonlinear optical property is an important phenomenon in optoelectronics. The frequency conversion of the non linear optical (NLO) material has a significant impact on laser technology, optical communication and optical storage technology. Therefore scientists were very much interested in to discover new NLO crystals. The search of new frequency conversion material was concentrated over the organic materials. But they have often-inadequate transparency, poor optical quality, lack of robustness and low laser damage threshold. Hence recent search concentrates on semi organic materials due to their large nonlinearity, high resistance to laser induced damage, low angular sensitivity and good mechanical hardness. Keyword: - - -.× K. Ezhilarasi , M. Murugan , " Introduction to Nonlinear Optics and Crystal Growth Techniques Process" Vol. 3 - Issue 5 ( 15 - 23 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P3 |
4 |
Computation of Electronic Structure and Ground State Properties of NaZnF3 - A. Johnson Samuel , M. Murugan
Abstract
The electronic structure and the ground state properties of fluoroperovskite compound NaZnF3 in the orthorhombic and cubic phases has been studied by means of self- consistent Tight Binding Linear Muffin - Tin Orbital (TB-LMTO) method. The NaZnF3 crystallizes in the orthorhombic structure at ambient condition and at high temperature it crystallizes in cubic structure. The total energies for the subjected compound were calculated as a function of reduced volume for both orthorhombic and cubic structure. The calculated total energies as a function of volume were fitted to the Birch EOS to obtain the ground state properties. The calculated ground state properties of these compounds are in good agreement with the experimental results. The total density of states and the band structure of NaZnF3 were calculated and are plotted at ambient pressure as well as at high pressure. Between the two structures, orthorhombic structure is found to be stable phase. Cubic NaZnF3 is found to be an indirect bandgap insulator with gap occurring between points. Whereas orthorhombic NaZnF3 is found to be a direct band gap insulator with gap occurring at - points. Keyword: - - -.× A. Johnson Samuel , M. Murugan , "Computation of Electronic Structure and Ground State Properties of NaZnF3" Vol. 3 - Issue 5 ( 24 - 35 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P4 |
5 |
Geophysical Investigation from Thiruporur to Mahaballipuram Using Resistivity Method - G. Reena , M. Murugan
Abstract
The work entitled geophysical investigation from thiruporur to mahaballipuram using resistivity method was investigated using various techniques such as vertical electrode sounding (VE S) , auxillary chart array , Werner and schlumberger configuration , out of which vertical electrode method showed good output values with the aid of resist 87 . The spatial distribution shows the thickness and resistivity of different layers further it showed that the resistivity decreases because of the intrusion of sea water. The chosen geological study area proved that the weathered, fractured and altered areas of rock acts as a storage of ground water potential. Keyword: - - -.× G. Reena , M. Murugan , "Geophysical Investigation from Thiruporur to Mahaballipuram Using Resistivity Method" Vol. 3 - Issue 5 ( 36 - 54 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P5 |
6 |
Application of Green Walls in Sustainable Urban is the Remedy to the Global Problems - Dr. G. Sudhakar , Swarnalath.G , Vijayakumar,G , Dr. V.venkatarathnamma
Abstract
The work entitled geophysical investigation from thiruporur to mahaballipuram using resistivity method was investigated using various techniques such as vertical electrode sounding (VE S) , auxillary chart array , Werner and schlumberger configuration , out of which vertical electrode method showed good output values with the aid of resist 87 . The spatial distribution shows the thickness and resistivity of different layers further it showed that the resistivity decreases because of the intrusion of sea water. The chosen geological study area proved that the weathered, fractured and altered areas of rock acts as a storage of ground water potential. Keyword: - - -.× Dr. G. Sudhakar , Swarnalath.G , Vijayakumar,G , Dr. V.venkatarathnamma , "Application of Green Walls in Sustainable Urban is the Remedy to the Global Problems" Vol. 3 - Issue 5 ( 55 - 61 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P6 |
7 |
Utilization of a 6U Nanosatellite for Lunar Sampling Mission - Taavishe Gupta, Sandeep Jangid, Ugur Guven
Abstract
The Moon has been one of the primary driving forces of mankind as it is the closest object to Earth. Naturally, it creates a lot of interest and many missions have been conducted before to study the Moon. Unfortunately, the cost of such missions has been prohibitive for more global engagement in lunar research. However, now with the advancing technology, it has become very evident to use nanosatellite technology to send a mission to the moon as launching and deploying a nanosatellite is far easier and less costly as compared to a full size satellite or a full size stellar probe. Thus, this paper discusses a case study of a Lunar Mission which utilizes a 6U Nanosatellite for a Lunar Sampling Mission. Keyword: Lunar Mission, 6U Nanosatellite, Lunar Sampling, Moon Mission, Cubesat to the Moon, Lunar Mission Fesability..× Taavishe Gupta, Sandeep Jangid, Ugur Guven , "Utilization of a 6U Nanosatellite for Lunar Sampling Mission" Vol. 3 - Issue 5 ( 62 - 67 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P7 |
8 |
NYMBLE: Blocking Misbehaving Users in Anonymizing Networks - R.Ravikumar, J.Ramesh Kumar
Abstract
Nymble, a system in which servers can blacklist misbehaving users, thereby blocking users without compromising their anonymity. Our system is thus agnostic to different servers’ definitions of misbehavior servers can blacklist users for whatever reason, and the privacy of blacklisted users is maintained. In pseudonymous credential systems users log into Web sites using pseudonyms, which can be added to a blacklist if a user misbehaves. Anonymous credential systems employ group signatures. Basic group signatures allow servers to revoke a misbehaving user’s anonymity by complaining to a group manager. Anonymizing networks such as Tor allow users to access Internet services privately by using a series of routers to hide the client’s IP address from the server. The success of such networks, however, has been limited by users employing this anonymity for abusive purposes such as defacing popular Web sites. Web site administrators routinely rely on IP-address blocking for disabling access to misbehaving users, but blocking IP addresses is not practical if the abuser routes through an anonymizing network. As a result, administrators block all known exit nodes of anonymizing networks, denying anonymous access to misbehaving and behaving users alike. a secure system called Nymble, which provides anonymous authentication, backward unlinkability, subjective blacklisting, fast authentication speeds, rate-limited anonymous connections, revocation auditability that is the users can verify whether they have been blacklisted, Nymble thus represents a practical solution for blocking misbehaving users of anonymizing networks. The user must first contact the Pseudonym Manager (PM) and demonstrate control over a resource; for IP-address blocking, the user must connect to the PM directly. We assume the PM has knowledge about Tor routers, and can ensure that users are communicating with it directly. Pseudonyms are deterministically chosen based on the controlled resource, ensuring that the same pseudonyms always issued for the same resource. Keyword: Nymble, anonymizing networks, symmetric cryptography, blocking.× R.Ravikumar, J.Ramesh Kumar , "NYMBLE: Blocking Misbehaving Users in Anonymizing Networks" Vol. 3 - Issue 5 ( 68 - 74 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P8 |
9 |
Control Cloud Data Access Privilege and Anonymity with Fully Anonymous Attribute-Based Encryption - R.Ravikumar , C. Sivasamy
Abstract
Cloud computing is a revolutionary computing paradigm, which enables flexible, on-demand, and low-cost usage of computing resources, but the data is outsourced to some cloud servers, and various privacy concerns emerge from it. Various schemes based on the attribute-based encryption have been proposed to secure the cloud storage. However, most work focuses on the data contents privacy and the access control, while less attention is paid to the privilege control and the identity privacy. In this paper, we present a semi anonymous privilege control scheme Anony Control to address not only the data privacy, but also the user identity privacy in existing access control schemes. Anony Control decentralizes the central authority to limit the identity leakage and thus achieves semi anonymity. Besides, it also generalizes the file access control to the privilege control, by which privileges of all operations on the cloud data can be managed in a fine-grained manner. Subsequently, we present the Anony Control-F, which fully prevents the identity leakage and achieve the full anonymity. Our security analysis shows that both Anony Control and Anony Control-F are secure under the decisional bilinear Diffie – Hellman assumption, and our performance evaluation exhibits the feasibility of our schemes. Keyword: Anonymity, multi-authority, attribute-based encryption.× R.Ravikumar , C. Sivasamy , "Control Cloud Data Access Privilege and Anonymity with Fully Anonymous Attribute-Based Encryption" Vol. 3 - Issue 5 ( 75 - 77 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P9 |
10 |
Comparative Study and Performance Analysis of Copper, Aluminium and Cuprobraze Radiators Using Flow Simulation Software - R.K Jaya kumar, T.Ashokkumar
Abstract
Cooling system in an automotive vehicle plays an important role in the engine performance. It dissipates excessive heat and maintains the performance of an engine at an optimum level. Size of the radiator mainly depends on heat load and availability of space. In this paper, an attempt has been made to examine the performance of radiators namely copper, aluminium and Cuprobraze employed in various commercial vehicles. Specifications of copper radiator and validation of numerical analysis were identified. After modifying the material properties of a radiator, performance analysis have been carried out using fluid flow software, which is fully integrated in solidworks for computing fluid flows. The result obtained from the analysis is commendable and this method may be taken as an effective approach for the prediction of heat transfer in radiators. Though aluminium has noted to perform better than copper and Cuprobraze, but it has limitations such as irreparability, non recyclability. This paper proposes an alternative solution for existing aluminium radiator with suitable cuprobraze radiator to provide required cooling effect to the engine, thereby overcoming the drawbacks of the radiator. Keyword: Heat Transfer, radiators, CFD, Flow simulation.× R.K Jaya kumar, T.Ashokkumar , "Comparative Study and Performance Analysis of Copper, Aluminium and Cuprobraze Radiators Using Flow Simulation Software" Vol. 3 - Issue 5 ( 78 - 83 ) - September - October 2017 , International Journal of Engineering and Techniques (IJET) , ISSN: 2395 - 1303 , www.ijetjournal.org × |
IJET-V3I5P10 |