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International Journal of Advances in Applied Sciences

IJAAS
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Published by Institute of Advanced Engineering and Science

ISSN : 22528814 EISSN : 27222594 DOI : http://doi.org/10.11591/ijaas

Core Subject : Science, Education, Social,

Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology Mathematics Physics

International Journal of Advances in Applied Sciences (IJAAS) is a peer-reviewed and open access journal dedicated to publish significant research findings in the field of applied and theoretical sciences. The journal is designed to serve researchers, developers, professionals, graduate students and others interested in state-of-the art research activities in applied science areas, which cover topics including: chemistry, physics, materials, nanoscience and nanotechnology, mathematics, statistics, geology and earth sciences.

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Articles 7 Documents

Search results for , issue "Vol 2, No 4: December 2013" : 7 Documents clear

Martensitic Transformation Characteristic of Ni-Mn Based Ferromagnetic Shape Memory Alloys Ajit Behera; Asit Behera; S.C. Mishra
International Journal of Advances in Applied Sciences Vol 2, No 4: December 2013
Publisher : Institute of Advanced Engineering and Science

Ferromagnetic shape memory alloys emerge as new functional materials which have interesting magnetomechanical coupling effects such as the ferromagnetic shape memory effect. These types of materials significantly change their shape and dimensions under the application of external fields i.e. either by using thermal energy or magnetic energy. Among them, some are the magnetostrictive alloys which in turn can change their shape by magnetic field up to 0.1 percent and by mechanical stress up to 10 percent in martensitic state. Up to 6 percent deformation can be obtained in materials under the action of the magnetic field which undergo the thermoelastic transformation into ferromagnetic phase. Due to higher processing cost and costly elements for alloying, ferromagnetic shape memory alloy have not so broadly utilization and satisfactorily use. Among different type of Ni-Mn based Heusler ferromagnetic shape memory alloys, Ni-Mn-Sn alloy have potential properties and exhibits lower cost. In this paper martensitic transformation of Ni50Mn50-ySny (y= 5, 10, 12.5) alloys were investigated. By differential scanning calorimetric measurement, it has been observed that, by keeping one element i.e. Ni as constant weight percentage, if we increase the weight percent of Sn; then martensitic starting temperature as well as austenitic starting temperature gradually decreases.

Development of Hardware Interfacing System for Visual C++ Doyce T Martinez; Tomas Ucol Ganiron Jr; Catherine S Lacsamana
International Journal of Advances in Applied Sciences Vol 2, No 4: December 2013
Publisher : Institute of Advanced Engineering and Science

This paper discussed on the development of automated data acquisitioncircuits using the parallel port of a computer through Visual C++. The aim ofthis study is to produce low cost laboratory apparatus that are both accurateand easy to use. Two revisions of an accelerometer device are described in thispaper. Each prototype determined sources of errors (initial moment of inertia,device delay, code optimization) that were used in improving the design for thenext revision. For the first revision errors of 13.63% and 16.38% between theexperimental and theoretical values were recorded while the second revisionshowed errors of 12.58 % and 7.20 % on two different angles. The next revisionof the prototype would include the use of embedded assembly code in the Visual C++code together with advanced thread synchronization techniques to improve theaccuracy of the measured data.

The Preprocessing and Probing Technique of Open Capacitated Vehicle Routing Problem with Split and Time Deadline (OCVRP-St) Model In Rubbish Transportation Problem Irmeilyana Irmeilyana; Fitri Maya Puspita; Indrawati Indrawati; Fitra Nur Azizah
International Journal of Advances in Applied Sciences Vol 2, No 4: December 2013
Publisher : Institute of Advanced Engineering and Science

The activity of rubbish transportation in Palembang is one of the applications of Vehicle Routing Problem (VRP) in transporting rubbish in Sako Palembang by applying preprocessing and probing techniques to obtain simplest OCVRP model. The solution is conducted by using LINDO software. The results show that the optimal routes in Sukarami before and after applying the tehniques are the same routes. In addition, we obtain the reduction of constraints and variables, the reduction of iteration numbers and the optimal value did not change.

Propagation Of Rayleigh Waves In Non-Homogeneous Orthotropic Half Space Elastic Media Under The Effect Of Magnetic Field Rajneesh Kakar
International Journal of Advances in Applied Sciences Vol 2, No 4: December 2013
Publisher : Institute of Advanced Engineering and Science

The influence of magnetic field on the propagation of Rayleigh waves in an inhomogeneous, orthotropic elastic solid medium has been discussed. The method of variable separation of is used to find the frequency equation of the surface waves. The obtained dispersion equations are in agreement with the classical results when magnetic field and non-homogeneity are neglected.

Synthesis a Sol-Gel for Chemical Fiber Sensor Bushra R. Mhdi; F. Hamode Jamal; Nahla A. Aljaber; Abeer H. Kalad
International Journal of Advances in Applied Sciences Vol 2, No 4: December 2013
Publisher : Institute of Advanced Engineering and Science

Sol–gel materials may found plenty of applications, e.g., as carriers for various substances, which can be exploited for sensing purposes or as drug releasing carriers. In this work, the fluorescence properties of two photosensitizers immobilized in silica based sol–gel materials were examined. Sol-gel derived silica possess many promising features, including room-temperature preparation procedure, porosity, chemical and physical stability. The material preparation procedure is described and practical remarks on silica-based sol-gels are included. It is reported that sol-gels with entrapped various molecules may be used in construction of implants and coatings with bioactive properties. It is shown how to exploit the sol-gel production route for construction of sol-gel coated fiber optic applicators for chemical sensor. We used a Sodium silicate(Na2 O3 Si) instead of the Trathyl Ortho Silicate (TEOS ) (Si (OC2 H5)4).We study the optical characteristics for this sample.

Management of Automotive Engine Based on Stable Fuzzy Technique with Parallel Sliding Mode Optimization Farzin Piltan; Mansour Bazregar; Mehdi Akbari; Mojdeh Piran
International Journal of Advances in Applied Sciences Vol 2, No 4: December 2013
Publisher : Institute of Advanced Engineering and Science

Both fuzzy logic and sliding mode can compensate the steady-state error of proportional-derivative (PD) method. This paper presents parallel sliding mode optimization for fuzzy PD management. The asymptotic stability of fuzzy PD management with first-order sliding mode optimization in the parallel structure is proven. For the parallel structure, the finite time convergence with a super-twisting second-order sliding-mode is guaranteed.

Can the Number of Correlation Coefficient (R Value) as a Statistical Indicator of Metal-Polluted Ecosystem? A Comparison between Polluted and Unpolluted Ecosystems C. K. Yap
International Journal of Advances in Applied Sciences Vol 2, No 4: December 2013
Publisher : Institute of Advanced Engineering and Science

The present paper is the first in the literature to present evidence that correlation coefficient (r value) can be used as a potential indicator of metal-polluted sediments collected from polluted and unpolluted ecosystems which were also supported by a few reported studies. Based on the correlation analysis on the heavy metals in the surface sediments, collected from two contrasting ecosystems, polluted and unpolluted areas, it was evidently found that the polluted ecosystems had higher numbers of significant correlation coefficients (P< 0.05) than the unpolluted ones. This could be due to the fact that the polluted ecosystems had wider ranges of values of heavy metal concentrations due to some elevated levels of metals recorded. Therefore, the correlation coefficients (r values) can be used as potential indicators for the polluted ecosystems. However, cautions should be exercised in which the monitoring studies should be able to truly reflect the overall environmental quality of the ecosystem, ranging from effluent-receiving point sources to the clean sites far away from the sources. However, further investigations are still necessary before number of significant r values can be confidently employed as indicator of metal-polluted ecosystem.

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