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Title: Comparison Study of Dual Fuel Engine Performance and Overall Generated Noise under Different Dual Fuel Types and Engine Parameters
Author(s): Emad Elnajjar, Mohamed Y. E. Selim, Farag Omar
Pages: 1-11 Paper ID: 111703-7575 IJBAS-IJENS Published: June, 2011
Abstract: The effects of different engine parameters: engine speed, injection timing, loading, compression ratio and different pilot fuel to gases fuel ratio, were experimentally used to investigate the overall generated noise from the dual fuel engine. Dual fuel engine noises were reported for almost the first time in this study by direct sound pressure level measurements and compared to the maximum cylinder pressure rise rate with respect to the engine crank angle. The study was conducted for three different fuels: pure diesel fuel, and dual fuel of diesel- LPG or natural gas. The study reported the location (crank angle) corresponding to maximum cylinder pressure and max pressure rise rate. The present work reported much higher SPL generated form burning a dual fuel compared to burning diesel fuel only.
Keywords: Diesel engine, dual fuel engine, combustion noise, LPG, Natural Gas.
Full Text (.pdf)  International Journals Of Engineering and Science| 450 KB
Title: An Improved Decomposition Algorithm and Computer Technique for Solving LPs
Author(s): Md. Istiaq Hossain, M Babul Hasan
Pages: 12-22 Paper ID: 110403-5757 IJBAS-IJENS Published: June, 2011
Abstract: Dantzig-Wolfe decomposition (DWD) principle relies on delayed column generation for solving large scale linear programs (LPs). In this paper, we will present an improved decomposition algorithm depending on Dantzig-Wolfe decomposition principle for solving LPs by giving algorithm and sequential steps by using flowchart. Numerical examples are given to demonstrate our method. A computer technique for solving LP is also developed with proper instructions. Finally we have drawn a conclusion stating the privilege of our method of computation.
Keywords: Linear programming, Decomposition, relaxation.
Full Text (.pdf)  International Journals Of Engineering and Science| 696 KB
Title: Resonant Buildup of Gravitational Waves
Author(s): B. M. Dakhel
Pages: 23-24 Paper ID: 110803-9292 IJBAS-IJENS Published: June, 2011
Abstract: Considering so far oscillations of flows bounded by rigid walls .Oscillations of a type – gravitational waves- are produced in flows with free boundaries in the presence of a gravity force. Owing to the presence of the free boundary. Showing below that gravitati-onal waves may turn out to be unstable even if the flow velocity profile of an ideal liquid has no inflection points.
Keywords: Resonant buildup, Gravitational waves,Surface waves.
Full Text (.pdf)  International Journals Of Engineering and Science| 239 KB
Title: Simultaneous Improvement of Yields of Intracellular Polysaccharide and Extracellular Polysaccharide in Submerged Cultivation from a Strain of Lachnum sp.
Author(s): Ming Ye, Tao Qiu, RuYue Yuan, Liu Yang
Pages: 25-31 Paper ID: 113903-0808 IJBAS-IJENS Published: June, 2011
Abstract: The correlations between the yield of intracellular polysaccharide (LIP), the yield of extracellular polysaccharide (LEP) and the biomass of a Lachnum YM281 in submerged fermentation were studied. Results showed that there was a significant linear relationship between the yield of LIP (Y) and the biomass (Z): Z=12.561Y-0.0148 (R2=0.985). The yield of LIP (Y) and yield of LEP (X) were positively correlated, but the linear relationship was insignificant. Accordingly, in order to improve the two synchronously, the two response variables (X,Y) were integrated into a single response variable using the desirability functions and the fermentation conditions of LIP and LEP of Lachnum YM281 were optimized synchronously by uniform design to obtain the optimum condition: 46.6g/L glucose, 14.6g/L yeast extract, 6.50mg/L glycine, initial pH value =7.5, 12 days' fermentation at 25?, the other factors being the same as those of the basic fermentation condition. Under this condition, the yields of LIP and LEP increased by 2.35g/L and 6.28g/L, respectively, improving by 1.42 times and 1.23 times, respectively, compared to those before optimization.
Keywords: Lachnum; polysaccharide; desirability functions; uniform design; simultaneous improvement.
Full Text (.pdf)  International Journals Of Engineering and Science| 540 KB
Title: Adsorption Equilibrium of Malachite Green Dye onto Rubber Seed Coat Based Activated Carbon
Author(s): Mohd Nazri Idris, Zainal Arifin Ahmad, Mohd Azmier Ahmad
Pages: 32-37 Paper ID: 115503-0404 IJBAS-IJENS Published: June, 2011
Abstract: In the present study, rubber seed coat based activated carbon (RSCAC) was used as adsorbent for malachite green (MG) dye removal from aqueous solution. The effects of dye initial concentration, contact time, solution temperature and pH on MG adsorption onto RSCAC were investigated. Results showed that the adsorption of MG was favourable at pH 6 whereas the adsorption uptake was found to increase with increase in initial concentration, contact time and solution temperature. Experimental data were analyzed by model equations such as Langmuir, Freundlich and Temkin isotherms and it was found Langmuir isotherm model best fitted well the adsorption data.
Keywords: Rubber seed coat; Activated carbon; Malachite green; Adsorption isotherm.
Full Text (.pdf)  International Journals Of Engineering and Science| 324 KB
Title: Efficiency Analysis in Rapier Loom
Author(s): A. N. M. Masudur Rahman, Md. Ruhul Amin
Pages: 38-42 Paper ID: 116203-8383 IJBAS-IJENS Published: June, 2011
Abstract: The study was carried out to find out the effects of various parameters on efficiency in rapier looms. To do so, the efficiency is analyzed by various parameters such as weaver’s skillness, loom speed, weave structure, pick density and R.H%, loom allocation per weaver, size take up %, tension on warp etc. The main objective of this study is to increase the efficiency and through that increase the productivity and profitability. Unlike in winding, warping and sizing where the emphasis is on the quality of preparation, in the loom shed, control of fabric quality as well as of productivity assumes significant importance. The weaving operation contributes by far the largest proportion to the cost of conversion of yarn into fabric. Surveys shown that the cost of actual weaving operation in mills with modern preparatory machines and automatic looms about 60%- 65% of the total cost for conversion of yarn into fabric. This means that a small increase in loom shed efficiency via productivity will result in considerable reduction of manufacturing cost. More importantly an increase in efficiency will bring in additional realization on the extra fabric available. For a medium size average mill, an increase of 2% in loom shed productivity can increase the annual cash flow by about Tk. Ten lakhs. Consequently, in evolving a satisfactory process control programmed for the loom shed, considerable weight age should be given to efficiency.
Keywords: Rapier loom, Weaving, productivity, fabric construction, weave type and efficiency losses.
Full Text (.pdf)  International Journals Of Engineering and Science| 282 KB
Title: Preparation and Properties of the Melanin from Lachnum singerianum
Author(s): Ming Ye, Yan Wang, Meishuang Qian, Xiao Chen, Xueqin Hu
Pages: 43-48 Paper ID: 115203-6060 IJBAS-IJENS Published: June, 2011
Abstract: Melanin was isolated from the mycelium of Lachnum singerianum by alkaline extraction, acid hydrolysis, and repeated precipitation with a yield of 8.85 g/100 g (dry weight basis). This melanin was soluble in alkaline solutions of NaOH and ammonia, but insoluble in water, HCl and common organic solvents (ethyl acetate, chloroform, ethanol, acetone and ethyl ether, etc.). And it was stable to light (UV light and natural light), reducing agent (sodium sulfite), additives (sodium benzoate, sucrose and sodium citrate) and some metal ions (Na+, K+, Mg2+, Mn2+, Ca2+ and Al3+), but unstable to hydrogen peroxide, citric acid, Vc, Cu2+ and Fe3+, which showed that it has a physico-chemical characteristics of typical melanin. When the concentration of this melanin was 200 mg•L-1, the scavenging rate of •OH, DPPH• and O2¯• radical were 52.64%, 41.2% and 43.48%, respectively. The IC50 values were 180.87 mg•L-1, 240 mg•L-1 and 275.27 mg•L-1, respectively. The results showed this melanin has a strong antioxidant activity, which suggested that this melanin can be used as a new antioxidant component in medicine or health products.
Keywords: Lachnum singerianum, Melanin, Preparation, Stability, Antioxidant activity.
Full Text (.pdf)  International Journals Of Engineering and Science| 581 KB
Title: NMU-induced mutation in Aglaonema by particle bombardment
Author(s): Totik Sri Mariani, Any Fitriani, Adhityo Wicaksono, Tet-Fatt Chia
Pages: 49-53 Paper ID: 115803-7272 IJBAS-IJENS Published: June, 2011
Abstract: Aglaonema is an ornamental plant which has beautiful leaf colour combination such as green and red; green and pink; green and white. Through NMU mutagenesis and particle bombardment technique, a new combination of leaf colour; red and white was obtained.. Sterile shoots of Aglaonema 1 week after subculture was used for shooting. These bombarded shoots elongated after 3 weeks of culture on Murashige and Skoog (MS) medium supplemented with 5.10-6 BAP. Mutated leaf of Aglaonema was obtained 4 months after shooting. There were 10 different types of mutations observed on leaf of Aglaonema, namely red blush, white, totally green, green and white, holed, wilting, green with a little white, green with white vascular, green, white and red, red and white. Red and white colour of Aglaonema leaves were obtained on 1, 2.5, 10, 250 and 500 and 2500 µM NMU.
Keywords: Aglaonema, mutation, NMU, red and white leaves.
Full Text (.pdf)  International Journals Of Engineering and Science| 279 KB
Title: Perturbation Solution of Fourth Order Critically Damped Oscillatory Nonlinear Systems
Author(s): B. M. Ikramul Haque, Md. Asraful Alom, Md. Habibur Rahman
Pages: 54-63 Paper ID: 117103-6464 IJBAS-IJENS Published: June, 2011
Abstract: A perturbation technique is developed in this article based on the KBM method to investigate the solution of fourth order critically damped oscillatory nonlinear systems in the case of two roots are real and equal and the other two roots are complex conjugate. The results obtained by this method show excellent coincidence with those obtained by numerical method. . The method is illustrated by an example.
Keywords: ---
Full Text (.pdf)  International Journals Of Engineering and Science| 345 KB
Title: Developing a Strategy for Creating and Assessing Internship Digital Media Curriculum in UAE University
Author(s): Hebatallah Bahgat El Semary
Pages: 64-72 Paper ID: 117503-9494 IJBAS-IJENS Published: June, 2011
Abstract: Creating and assessing a digital media curriculum is a challenge because of the difficulty in making the connection between concepts and applications..This paper describes an assessment experiment recently conducted to help us gain insight into students' thought processes. Students are observed and videotaped in a closed lab (Abu Dhabi TV) designed to help them understand concepts and to help us assess how they relate concepts to activities. Their input and feedback was compared with another group of students who were not enrolled in the same internship course (control group). The small size of the internship class precludes doing comparative studies where one group uses our curriculum material while the other uses nothing.
Keywords: Digital Media, Education, Assessment, Internship.
Full Text (.pdf)  International Journals Of Engineering and Science| 390 KB
Title: Progress in Business Intelligence System research : A literature Review
Author(s): Rina Fitriana, Eriyatno, Taufik Djatna
Pages: 73-81 Paper ID: 118503-6464 IJBAS-IJENS Published: June, 2011
Abstract: This paper reviews the literature of Progress in Business Intelligence System research. Relates articles appearing in the international journal like Proquest, Ebscohost, Emerald, Science Direct and IEEE Conference from 2000 to 2011 are gathered and analyzed so the following three question can be answered:(1)Which approached were most pupular?(ii)Which the most popular BI integrated research. It was found 50% research is in single approach Business Intelligence System. Integrated research between Business Intelligence and Data Mining is the most popular evaluating criteria with 6,67 %. The topic that integrated with BI research that is found in this research is Supply Chain Management, Customer Relationship Management, Data Mining, Data Warehouse, Decision Support System, Performance Scorecard, Knowledge Management, Business Process Management, Artificial Intelligence, Enterprise Resource Planning, Extract Transformation Loading, OLAP, Quality Management System, Strategic Management.
Keywords: Business intelligence, data mining, data warehouse, decision support system, supply chain management, artificial intelligence, quality management system.
Full Text (.pdf)  International Journals Of Engineering and Science| 327 KB
Title: Use of Accelerated Procedure to Estimate the Behaviour of Shallow Foundation
Author(s): O. P. Aghamelu, B. I. Odoh, H. N. Ezeh
Pages: 82-89 Paper ID: 1111403-02-6969 IJBAS-IJENS Published: June, 2011
Abstract: This paper describes a rapid foundation assessment procedure that employs simple field and laboratory analyses to determine the suitability of a construction site at Calabar, southeastern Nigeria. While the laboratory tests were limited to gradation, Atterberg limits, specific gravity and triaxial shear strength, simplified Terzaghi-Meyerhof’s and Terzaghi-Peck’s equations were employed for the bearing capacity and settlement analyses, respectively. Results indicated that the foundation soil (medium dense sand) classified as silty sand (SM), following Unified Soil Classification System. Sand-sized particles ranged from 60 – 74 %, plasticity index from 21 to 30 and specific gravity values from 2.61 to 2.62. Analyses showed that the site recorded increases in values of both ultimate capacity (qf) and safe bearing capacity (qs) with depth; qf ranged from 373 kN/m2 at depth of 0.5 m to 634 kN/m2 at depth of 3.0 m, and qs 149 kN/m2 at depth of 0.5 m to 254 kN/m2 at depth of 3.0 m. The calculated values of qs (149 – 254 kN/m2) fall within established range of presumed bearing values for medium dense sand, which is 100 – 600 kN/m2, thus, indicating that (1) the foundation soil would have good stability, although moderate to high immediate compressibility may be expected (compression index of the soil ranged between 0.4 and 0.5), and (2) the testing program and analytical procedure were both, to some extent, reliable.
Keywords: Project site, Rapid geotechnical assessment, Foundation, Bearing capacity analysis, Nigeria.
Full Text (.pdf)  International Journals Of Engineering and Science| 527 KB
Title: An Algorithm and Its Computer Technique for Solving Game Problems Using LP method
Author(s): H. K. Das, M. B. Hasan
Pages: 90-99 Paper ID: 112303-8585 IJBAS-IJENS Published: June, 2011
Abstract: Game theory is the formal study of decision-making where several players must make choices that potentially affect the interests of the other players. In this paper, we develop a combined computer oriented technique for solving game problems. In this technique, we implement Minimax-Maximin method, rectangular game, and convert the resulting game into Linear Programming (LP) problem. Finally, to find out the strategies of both players, we incorporate the usual Simplex method of Dantzig [11]. We develop our computer technique by using the programming language MATHEMATICA [16]. We will show the efficiency of our program for saving labor and time for solving game problems by presenting a number of numerical examples.
Keywords: Game, Linear Programming, Minimax-Maximin, Simplex, Strategy.
Full Text (.pdf)  International Journals Of Engineering and Science| 1,303 KB
Title: Mixed Integral Equation of Contact Problem in Position and Time
Author(s): M. A. Abdou, S. J. Monaquel
Pages: 100-108 Paper ID: 112203-6767 IJBAS-IJENS Published: June, 2011
Abstract: In this work we consider a mixed integral equation of the first kind of type Fredholm-Volterra in position and time, respectively. The Fredholm integral term is considered in a variable position, in the space , and has a singular kernel. While the Volterra integral term is considered in time, in the class 1. Using a numerical method we have a finite system of Fredholm integral equations of the second kind which will be solved numerically, using Chebyshev polynomials method. Numerical results are computed and the error estimate is calculated
Keywords: Mixed singular integral equation (MSIE), linear algebraic system (LAS), Chebyshev polynomials (CPs), Fredholm-Volterra integral equation (F-VIE) MCS: 45B05, 45E10.
Full Text (.pdf)  International Journals Of Engineering and Science| 348 KB
Title: Reusing and Delivery E-Content Based on Learner Desires and Style
Author(s): Omar Abdullah Batarfi, Fathy Elbouraey Eaassa, Mostafa El-Sayed Saleh
Pages: 109-116 Paper ID: 113603-4949 IJBAS-IJENS Published: June, 2011
Abstract: One reason for the separation between learning resources and learning activities is to facilitate reusability of learning resources. In this research, we built software agents to help instructors to search for learning objects in metadata, based user learning style and desires, hence to enable authoring adaptive course(s). The research also helps the authors of learning courses in reusing the learning objects and integrating them by using the mobile agents. We built mobile agents to travel to all nodes in a distributed system to gather learning objects created based on different e-learning standards and different formats, and return back to a server to unify the different formats of learning objects into one preferred learner format. Finally, the proposed model delivered the collected and unified learning objects to the learner based on his desires. To prove the research goal, a prototype was implemented using Java programming language and using the Aglet environment.
Keywords: ---
Full Text (.pdf)  International Journals Of Engineering and Science| 754 KB
Title: A Comparison Between HPM and ADM for the Nonlinear Benjamin–Bona–Mahony Equation
Author(s): Hasan Bulut, H Mehmet Baskonus, Seyma Tuluce, Tolga Akturk
Pages: 117-127 Paper ID: 1110803-4949 IJBAS-IJENS Published: June, 2011
Abstract: In this paper, we studied whether we could obtain numerical solution of the nonlinear Benjamin–Bona–Mahony Equation (BBME) by Homotopy Perturbation Method (HPM) and Adomian Decomposition Method (ADM) and then formed charts which is include numerical conclusion for this equation by drawing graphics of the this equation by means of programming language Mathematica. Finaly, we have done a comparison between HPM and ADM for BBME.
Keywords: Nonlinear Benjamin–Bona–Mahony Equation; Homotopy Perturbation Method; Adomian Decomposition Method.
Full Text (.pdf)  International Journals Of Engineering and Science| 425 KB
Title: Estrus Period Determination of Female Rats (Rattus norvegicus) by Fourier Transform Infrared (FTIR) through Identification of Reproductive Hormones Metabolites in Urine Samples
Author(s): Luthfiralda Sjahfirdi, Shafar Nur Azis, Hera Maheshwari, Pudji Astuti, Frans D. Suyatna, Mohammad Nasikin
Pages: 128-133 Paper ID: 1110703-7474 IJBAS-IJENS Published: June, 2011
Abstract: Recently, some fertility determination methods by determining estrus cycle through analysis of the existence and level of estradiol hormones metabolites in urine such as estrone conjugate (E1C) and pregnanediol 3-glucuronide (PdG) have been developed. Those hormone determination analyses were using destructive methods, which were complicated and highly-cost. Therefore, a fertility analysis was conducted in this research by determining the E1C and PdG level using the FTIR method. The samples in this research were urine of 3 estrus and non-estrus periods of the cycle from 10 rat. Those samples were analysed by 2 methods: qualitative method with vaginal smears which observing proportion of mature and immature epithelial cells of vagina, and FTIR method. The FTIR analysis results were spectrums with absorbancy numbers which then been used to determine E1C and PdG level. The absorbancy values were compared relatively with similar creatinine values throughout the cycles. Creatinine was identified on ketone peak number 1730 cm-1. The low SD values showed that creatinine had constant values throughout the cycles. Functional group absorbance represented E1C and PdG were compared to creatinine. PdG was identified on aldehyde peak number 1639 cm-1, carboxyl acid number 1745 cm-1 and alkyl 1379 cm-1. E1C was identified on alkyl peak number 416 cm-1, aromatic 709 cm-1 and hydroxyl 3468 cm-1.
Keywords: FTIR, functional group, vaginal smear, pregnanediol 3-glucuronide, estrone conjugate, estrus cycle.
Full Text (.pdf)  International Journals Of Engineering and Science| 486 KB
Title: Factors Influencing use of ICT in Technical & Vocational Education to Make Teaching-Learning Effective & Efficient: Case Study of Polytechnic Institutions in Bangladesh
Author(s): Md. Rashedul Huq Shamim, Md. Aktaruzzaman, Che Kum Clement
Pages: 134-140 Paper ID: 119103-8484 IJBAS-IJENS Published: June, 2011
Abstract: Educational attainment is recognized as one of the fundamental indicators of development of a nation. The present world can not think development of a country without Technical and Vocational Education & Training (TVET).The purpose of the study was to indicate the factors which influencing use of information and communication technology (ICT) in teaching – learning process to make teaching learning more effective & efficient in Technical and Vocational Education & Training (TVET). Out of 45 polytechnic institutions nine polytechnic institutes were considered as sample for this study. Comprehensive questionnaires were sent to these institutions. From data analysis it was found that the teachers of the polytechnic institutions are very much in favour of information & communication technology. Because of, if ICT is used in teaching-learning process in technical & vocational education, the quality of the education will be improved. On the other hand, the factors those stimulating the teachers of polytechnic institutions to use of ICTs in teaching learning are: economical, time saving, easy to prepare, attractive, easy to motivate the students, easy to administer, communication is easier, easy to integrate. Training on ICT & available ICT tools are influenced them to use in T-L process.
Keywords: ICT(Information & Communication Technology), Teaching – Learning(T-L), Technical and vocational education (TVE).
Full Text (.pdf)  International Journals Of Engineering and Science| 434 KB