E-ISSN 0976-7916
  Journal of Engineering  Research and Studies
                                                            -An Open Access Peer Reviewed e-Journal

 

 
 

ASSESSMENT OF RECYCLED AGGREGATE CONCRETE

 

Authors: Parekh D. N.and Dr. Modhera C. D.

 

JERS/ Volume II/ Issue I/ January-March'2011/1-9

ABSTRACT
Use of recycled aggregate in concrete can be useful for environmental protection and economical terms. Recycled aggregates are the materials for the future. The application of recycled aggregate has been started in many construction projects in many European, American and Asian countries. Many countries are giving many infrastructural laws relaxation for increase the use of recycled aggregate. Paper reports the basic properties of recycled fine aggregate and recycled coarse aggregate. It also compares these properties with natural aggregates. Basic changes in all aggregate properties were determined and their effects on concreting work were discussed at length. Similarly the properties of recycled aggregate concrete were also determined and explained here. Basic concrete properties like compressive strength, flexural strength, workability etc are explained here for different combinations of recycled aggregate with natural aggregate. Codal guidelines of recycled aggregates concrete in various countries were stated here with their effects, on concreting work. In general, present status of recycled aggregate in India with their future need and its successful utilization were discussed here in detail.

PERFORMANCE OF PARALLEL GENETIC ALGORITHMS ON DISTRIBUTED MEMORY ARCHITECTURES

 

Authors: Sunil Kr. Singh, Khushboo Aggarwal, Akshay Gupta

 

JERS/ Volume II/ Issue I/ January-March'2011/10-18

ABSTRACT
The Genetic Algorithms draw a similarity from the Genetic mutation and Cross Over within populations from biology. The genetic algorithms are highly parallel in nature. These can be used to solve many important problems like Graph Partitioning, Travelling salesman problems, 0-1 Integer linear programming problem etc. When these are implemented, there exists a trade-off between Genetic search qualities and execution performance. In order to improve the execution performance of algorithms, those implementations with lesser communications between populations are considered best. In this direction, we try present an algorithm by discrete small subpopulations. However this implementation reduces the quality of search of the algorithm. Therefore we can improve the quality of search by having a centralized population. In this paper, we review some of the alternatives of implementation of these algorithms on distributed memory architectures in which centralized data can be implemented. We also present an example in which we implement these alternatives of parallel algorithms for predicting the tertiary protein structure. In the final section, we try to provide a performance analysis of the various proposed architectures.

GEOPOLYMER CONCRETE: A CONCRETE OF NEXT DECADE

 

Authors: Raijiwala D.B., Patil H. S.

 

JERS/ Volume II/ Issue I/ January-March'2011/19-25

ABSTRACT
This paper presents the progress of the research on making Geopolymer concrete using the Thermal Power Plant fly ash, (Ukai) Gujarat, India. The project aims at making and studying the different properties of Geopolymer concrete using this fly ash and the other ingredients locally available in Gujarat. Potassium Hydroxide and sodium Hydroxide solution were used as alkali activators in different mix proportions. The actual compressive strength of the concrete depends on various parameters such as the ratio of the activator solution to fly ash, morality of the alkaline solution, ratio of the activator chemicals, curing temperature etc. In recent years, Concrete usage around the world is second only to water. Ordinary Portland cement (OPC) is conventionally used as the primary binder to produce concrete. The amount of the carbon dioxide released during the manufacture of OPC due to the calcinations of limestone and combustion of fossil fuel is in the order of one ton for every ton of OPC produced. In addition, the extent of energy required to produce OPC is only next to steel and aluminum. Attempts to reduce the use of Portland cement in concrete are receiving much attention due to environment-related. Fly ash-based Geopolymer concrete is a ‘new’ material that does not need the presence of Portland cement as a binder. The role of Portland cement is replaced by low calcium fly ash. Geopolymer is an inorganic alumino-Hydroxide polymer synthesized from predominantly silicon (Si) and aluminum (Al) materials of geological origin or byproduct materials such as fly ash. The term Geopolymer was introduced to represent the mineral polymers resulting from geochemistry. The process involves a chemical reaction under highly alkaline conditions on Si-Al minerals, yielding polymeric Si-O-Al-O bonds in amorphous form.

ROLE OF INTERNET IN FOOD ENGINEERING TEACHING AND RESEARCH

 

Authors: Fakir Mohan Sahu

 

JERS/ Volume II/ Issue I/ January-March'2011/26-31

ABSTRACT
The explosive popularization of personal computers during the last decade, along with the appearance of the World Wide Web and high-level programming techniques, has opened many new and exciting opportunities in the field of education. Instructional modules using Internet-assisted technologies may be used alone or as supplements to lecture materials to enhance learning. With careful preparation, including incorporation of features that have been used for decades in traditional teaching, multimedia technologies may contribute significantly to teaching and learning. The use of text, self-quizzes, illustrations, animated figures, and spreadsheet calculations are some of the features that can enhance instructional units for delivery on the Internet.

BIOSYNTHESIS OF SILVER NANOPARTICLES USING TRICHOSPORON BEIGELII NCIM 3326 AND EVALUATION OF THEIR ANTIMICROBIAL ACTIVITY

 

Authors: V.P. Ghodake*, P.T. Kininge, S.P. Magdum1, A. S. Dive, M.M. Pillai

JERS/ Volume II/ Issue I/ January-March'2011/32-36

ABSTRACT
The synthesis of nanoparticles has been entirely a chemical process till last few years. Because of environmental threat the development of eco-friendly processes for the synthesis of nanonmaterials is the need of the day. One approach that shows great potential is synthesis of nanoparticles using micro-organisms such as bacteria, yeast and fungi. In our study, we exposed Trichosporon beigelii NCIM 3326 to aqueous silver ions to study its potential to reduce silver ions to stable silver nanoparticles. The exposure of Trichosporon beigelii NCIM 3326 to aqueous silver ions resulted in synthesis of silver nanoparticles. The production of silver nanoparticles was confirmed by UV–visible spectra, X-ray photoelectron spectroscopy (XPS) and Scanning Electron Microscopy (SEM) studies. Silver nanoparticles showed antibacterial activity against Escherichia coli. Consensus has emerged that reduction of the aqueous silver ions occurs by an enzymatic process thus showing a possibility of development of an eco-friendly, fungal-based nanomaterial synthesis.

DESIGN OF FRANCIS TYPE MIXED FLOW PUMP IMPELLER USING C++

 

Authors: Pramesh Kumar, H.L.Tiwari, Dr. V. Prashad, Dr. V.K.Gahlot

 

JERS/ Volume II/ Issue I/ January-March'2011/37-48

ABSTRACT
Pumps are used for variety of applications. The design of the pump should be such that it gives better performance and meeting the requirements. The transfer of energy to the fluid takes place in the impeller. Thus the design of impeller becomes an important task. The efficiency of pump is very much dependent on performance of impeller, because most hydraulic losses are related to it. As the flow characteristic keeps changing within the pump, design of a pumping unit is not an easy task. The manual design of the pump takes lot of labour as well as time. But with the help of Computers program we can eliminate most of the drawbacks of manual design and upgrade the hydraulic design, in a short time period thus saving considerable time. In software, once the design steps is fixed, variation in result on changing input data can be seen with in fraction of seconds. Thus, considerable time and labor is saved. In this paper computer program in c++ has been written for the design of pump impeller of a Francis type mixed flow pump for the given operating conditions i.e. No of stages, Head, Discharge, and speed and then generates the vane shape along the mean streamline by using the point-by-point method.

STUDIES ON IONIC MASS TRANSFER WITH COAXIALLY PLACED TWISTED TAPE AS TURBULENT PROMOTER IN CIRCULAR CONDUITS

 

Authors: K.Nagamalleswara Raoa,*,G. Koteswara Reddyb, V. Murali Mohanc, P. Rajendra Prasadd, V. Sujathae

 

JERS/ Volume II/ Issue I/ January-March'2011/49-61

ABSTRACT
An experimental investigation has been carried out to study the enhancement in mass transfer coefficient by entry region twisted tape promoter inserted in a circular conduit. Friction factor, augmentation ratio, energy factor and performance index characteristics are also investigated. The effects of geometric parameters pitch, length and width of the twisted tapes on mass transfer and momentum transfer are studied. The experiments are conducted with thirty three lengths, three widths and ninety nine pitches over the Reynolds number range of 5,657 – 25,340. The results obtained are compared with the smooth tube data to assess the improvement in mass transfer. Correlations are developed for mass and momentum transfer as a function of pitch, length and width of the twisted tape, mass transfer performance index as a function of Reynolds number and pitch and length of the twisted tape promoter.

EFFECT OF ADDITION OF ACRYLONITRILE-BUTADIENE STYRENE ON MECHANICAL, MORPHOLOGICAL AND FLAME RETARDANCE PROPERTIES OF NOVOLAC / CARBON COMPOSITES

Authors: Sham Aan M P and M. Krishna*

 

JERS/ Volume II/ Issue I/ January-March'2011/62-70

 

ABSTRACT
The objective of this work was to study the effect of addition of Acrylonitrile-Butadiene-Styrene (ABS) on the mechanical, morphological and flame retardance behaviour of novolac phenolic / carbon fibre composites (NPCC). Viscosity of the blends was studied. The miscibility of ABS and novolac phenolic resin was studied using DSC. The 6 wt % ABS/NPCC yielded 32 % increase in impact strength compared to that of unmodified NPCC. Void content of the composites were measured. Both NPCC and ABS blended NPCC were also tested for tensile strength (UTS), flexural strength (FS), and inter laminar shear strength (ILSS). Morphological studies of fractured surface were carried out using SEM. The UTS, FS, ILSS and impact strength of the modified NPCC showed better results at 6 wt % of ABS without any compromise on the flame retardancy. The fracture surface examination showed good adhesion between the fiber and the matrix in the modified NPCC.

AN IMMIGRATED ENEMY- AMMENSAL MODEL WITH MORTALITY RATE FOR AMMENSAL SPECIES

 

Authors: K.V.L.N.Acharyulu & N.Ch. Pattabhi Ramacharyulu

 

JERS/ Volume II/ Issue I/ January-March'2011/71-75

ABSTRACT
The present paper deals with an analytical investigation on two species Ammensal-enemy model where the enemy species is immigrated at a constant rate and the Ammensal species has a mortality rate in which both the species are with limited resources. Only one equilibrium point of the model is recognized and its stability criteria is elicited. Solutions for the linearised perturbed equations are determined and the results are explicated.

MINING FUZZY ASSOCIATION RULE USING FUZZY ARTMAP FOR CLUSTERING

 

Authors: Saket Agarwal, Leena Singh

JERS/ Volume II/ Issue I/ January-March'2011/76-80

ABSTRACT
Association rule mining is an important research area in today’s scenario. It finds interesting associations and correlation relationship among a large set of data items. Aproiri algorithm is used to find association rules for single dimensional database but if the database is too large it generate a lots of candidate sets, it is not efficient for large databases. For finding the association rules for large multidimensional database or quantitative database some extension is required in existing Aproiri algorithm. Quantitative data can be represented in the form of fuzzy sets. In recent years a lots of work have been done in finding the fuzzy association rules. But the huge number of candidate item sets makes it inefficient for a data mining system to analyze them. To overcome this problem we proposed fuzzy association rules mining on the basic of fuzzy ART. Fuzzy ART uses fuzzy data to implement clusters. In each Cluster we have reduced set of data. After finding the clusters, apply the Aproiri in each cluster for mining .

DESULFURIZATION OF HYDROCARBON LIQUID FUELS BY ADSORPTION

 

Authors: M.S.Patil, Y.C.Bhattacharyulu, S.R.Kulkarni

 

JERS/ Volume II/ Issue I/ January-March'2011/81-98

ABSTRACT
Sorption of sulfur onto activated carbons by batch reactor was investigated. Activated carbon was prepared from black liquor. Phosphoric acid and nitrogen were used as intercalating agents. Due to stirring, adsorption equilibrium was achieved within short period of time (60 min). It was found that intra-particle diffusion resistance has been overcome due to stirring. The experimental data obtained obeys Langmuir adsorption isotherm model. Activated carbon shows higher parameter values. Thermodynamics parameters like ΔG, ΔH and ΔS were calculated to understand the nature of adsorption. The surface morphology of the two activated carbons before and after sulfur sorption was verified using scanning electron microscope (SEM) and X-ray diffraction studies (XRD).

SCALE INVARIANT FEATURE EXTRACTION FOR IDENTIFYING AN OBJECT IN THE IMAGE USING MOMENT INVARIANTS

 

Authors:R.Muralidharan, Dr.C.Chandrasekar

 

JERS/ Volume II/ Issue I/ January-March'2011/99-103

ABSTRACT
Feature extraction is the first and foremost activity in object recognition and detection processing. It reduces the amount of data by representing the image in the form of distinctive, representative interest points. This paper deals with the extraction of global features from the pre-processed images. Geometric Moment invariant produces a set of seven normalized moment invariants that are invariant under shifting, scaling and rotation. Geometric Moment invariant is widely used to extract global features for pattern recognition due to its discrimination power and robustness. After the feature extraction is done the dimensionality of the feature is reduced using the concept of Principal Component Analysis. Finally, the reduced feature vector is used for the recognition of object using the Nearest Neighbor.

EFFECT OF PYLON SHAPE ON ANALYSIS OF CABLE-STAYED BRIDGES

 

Authors: Dr Niraj D Shah Dr Jatin A Desai Dr H S Patil

 

JERS/ Volume II/ Issue I/ January-March'2011/104-109

ABSTRACT
The paper presents finite element approach for the geometric nonlinear aerostatic analysis of self anchored cable-stayed bridges with different pylon configurations along with vehicular interaction. The example bridges are supported by three different pylon configurations such as H shape, A shape and Inverted Y shape. For above mentioned bridges, linear and non-linear analysis was carried out for a wind speed of 55 m/s for both self anchored and partially earth anchored (bi-stayed) bridges. The results showed that these factors have significant influence on the aerostatic behavior and should be considered in the aerostatic analysis of long span cable stayed bridges. Analysis results will be useful for the designers to consider the shape of pylon at the initial stage of design. Again the results indicate the significant influence of pylon shapes on aerostatic behavior of such long span bridges

 

A NOVEL CONCEPT IN DESIGN OF SINGLE PHASE INDUCTION GENERATOR AS WIND GENERATOR FOR REMOTE AREA

 

Authors: Mrs. Neelima R. Kulkarni, Dr.(Mrs.)Y.S.Apte

 

JERS/ Volume II/ Issue I/ January-March'2011/110-113

 

 

CARRIER CONCENTRATION INDUCED RELAXATION OSCILLATION IN SEMICONDUCTOR LASER

 

Authors: Saha P.* Sarkar A.

 

JERS/ Volume II/ Issue I/ January-March'2011/114-115

ABSTRACT
Here we have approached to establish the reason of relaxation oscillation in semiconductor laser, a matter of discussion over several years, by theoretical considerations relating, the carrier concentration in its active region with the relaxation oscillation

METHODS OF ASSESSING PEDESTRIAN LEVEL OF SERVICE

 

Authors:Singh K.*, Jain P.K.

 

JERS/ Volume II/ Issue I/ January-March'2011/116-124

ABSTRACT
Pedestrians form the largest single road user group and also are the most vulnerable road users. Pedestrians’ movements are not restricted to lanes or specific routes however they are restricted by the physical boundaries around them such as the presence of walkways or pedestrian ways. Therefore the needs of the pedestrian should be considered in the design of transportation facilities. Pedestrian facilities include sidewalks, paths, crosswalks, stairways, curb cuts and ramps, and transit stops. In some areas, particularly in suburban and rural communities, pedestrians may be sharing the roadway itself or its shoulders. These facilities should be pedestrian friendly to promote walking and safety of the pedestrians.
To know how well roadways accommodate pedestrian travel or how they are pedestrian friendly it becomes necessary to assess the walking conditions. Such a measure of walking conditions would be helpful in roadway cross-sectional design. It would also help evaluating and prioritizing the needs of existing roadways for sidewalk retrofit construction. Estimation of pedestrian level of service (LOS) is the most common approach to assess quality of operations of pedestrian facilities. The focus of this study is to review current methods of assessing pedestrian level of service (PLOS) and discussing some new concepts which have been proposed by the researchers to evaluate pedestrian environment in a better way

SMART GAS SENSOR FOR MINIATURIZATION OF E- NOSE

 

Authors: Rajesh Kumar, S. A. Imam, M.T.Beg

 

JERS/ Volume II/ Issue I/ January-March'2011/125-132

ABSTRACT
Smart gas sensor for miniaturization of E-nose is the need of the fast developing decade. Some researchers have developed very sensitive integrated sensing elements for gas detection. The polymer coated micro bridges in high density arrays can detect ppm level concentrations of vapors using on chip integrated read out techniques. The demonstrated technology is very suitable for miniaturization of electronic nose devices which provide low power consumption (<1µw/bridge) and small form factor. In this paper we present a smart gas sensor which consist a set of gas sensor array followed by interfacing circuits and a processor. In this processor we have used GPD (Gate Plated Device) which provide us very high speed and low power consumptions. First of all in this paper we have gone through concentration of all the gasses which is immediately dangerous to life and health. Many gas sensors are available now days which can detect the various level of concentration of different gasses. In this paper we present the new setup which provides us alarming system with automatic control to the protection unit. We assembled these four blocks together to provide solution in critical situation like detection of toxic gasses in the mines, where some times response time is very less. In that situation a human being can’t respond within required time. Designing an intelligent situated agent is a difficult task because the designer must see the problem from the agent's viewpoint, considering all its sensors, actuators, and computation systems.

EXPERIMENTAL AND COMPUTATIONAL ANALYSIS AND OPTIMIZATION FOR HEAT TRANSFER THROUGH FINS WITH DIFFERENT TYPES OF NOTCH

 

Authors: S.H. Barhatte, M. R. Chopade, V. N. Kapatkar.

 

JERS/ Volume II/ Issue I/ January-March'2011/133-138

ABSTRACT
Extended surfaces, commonly known as fins, often offer an economical and trouble free solution in many situations demanding natural convection heat transfer. Heat sinks in the form of fin arrays on horizontal and vertical surfaces used in variety of engineering applications, studies of heat transfer and fluid flow associated with such arrays are of considerable engineering significance. The main controlling variable generally available to designer is geometry of fin arrays. Considering the above fact, natural convection heat transfer from vertical rectangular fin arrays with and without notch at the center have been investigated experimentally and theoretically. Moreover notches of different geometrical shapes have also been analyzed for the purpose of comparison and optimization. In a lengthwise short array where the single chimney flow pattern is present, the central portion of fin flat becomes ineffective due to the fact that, already heated air comes in its contact. In the present study, the fin flats are modified by removing the central fin portion by cutting a notch. This paper presents an experimental analysis of the results obtained over a range of, fin heights and heat dissipation rate. Attempts are made to establish a comparison between the experimental results and results obtained by using CFD software.

A THREE SPECIES ECOLOGICAL AMMNESALIM WITH MORTALITY RATE FOR PREY

 

Authors:K.V.L.N.Acharyulu & N.Ch. Pattabhi Ramacharyulu

 

JERS/ Volume II/ Issue I/ January-March'2011/139-146

ABSTRACT
The paper investigates on a three species ecological Ammnesalism with limited resources consisting of a prey (S1), a predator (S2) surviving on Ammensal species and an enemy (S3) Ammensal to the prey in which the prey has a mortality rate. The mathematical model represents a set of three first order non-linear simultaneous equations. The equation for enemy is non-linear but de-coupled with the prey-predator pair. The four equilibrium points of the model are traced and criteria for their stability are discussed. Trajectories of the perturbations over the equilibrium points are extracted.

A FINITE VOLUME MODEL OF CHARRING AND ABLATION

 

Authors: Sourabh Deshpande, S Pavithran*, Venkatesh Iyer

 

JERS/ Volume II/ Issue I/ January-March'2011/147-153

 

ABSTRACT
The one dimensional (axisymmetric) charring ablation problem has been considered. Finite volume is used for spatial discretisation. The time marching is fully implicit. The mesh is stationary for the charring case. The charring front has a discontinuity in the heat flux. During ablation, the cell adjacent to the ablation front undergoes variation in volume. The Sherman-Morrison method is used to obtain the solution using the tridiagonal method, as the matrix is very close to being tridiagonal. This results in an efficient algorithm.

COMPARATIVE PERFORMANCE ANALYSIS OF WAVELENGTH CONVERSION USING FOUR WAVE MIXING AND CROSS GAIN MODULATION TECHNIQUES

Authors:  Jaswinder Singh, Harmanjot Singh

 

JERS/ Volume II/ Issue I/ January-March'2011/154-158

 

ABSTRACT
Semiconductor optical amplifiers (SOA) technology has matured to the point where many devices are available in optical communication systems. There are many functional applications for SOAs, one of which is wavelength conversion. In this paper we represent two wavelength conversion mechanisms using SOA (Semiconductor Optical Amplifiers), these are FWM (Four wave Mixing) and Cross Gain Modulation (XGM). Two important parameters, Confinement Factor and SOA Length are studied and results for Maximum Eye Opening are discussed.

STUDY EFFECT OF POLYESTER FIBRES ON ENGINEERING PROPERTIES OF HIGH VOLUME FLY ASH CONCRETE

 

Authors:  Indrajit Patel, C D Modhera

 

JERS/ Volume II/ Issue I/ January-March'2011/159-166

 

ABSTRACT
Aim to improve engineering and durability properties of conventional High Volume Fly Ash (HVFA) concrete experimental work has been carried out as part of PhD study. Though HVFA concrete has development history of more than four decades the use has not been significant and notable due to many reason including slower early strength development, resistance to bending, impact and abrasion for its application on wide base. The replacement of Portland cement in context of Indian Standard is of order 35% by mass of cementing material. Even the blended cement contains 25% of fly ash. This will not address the issue of green concrete and sustainability of concrete technology. Inclusion of 50% or more fly ash reflects to application of HVFA for low to high strength and high performance concrete with or without adding micro sized material like silica fume or micro quartz. The experimental work as part of Ph.D. work includes mix design for M25,30,35 and M40 grade HVFA concrete with different percentage of class F fly ash 50,55 and 60%.To improve the engineering properties viz. compressive, flexural, impact strength and abrasion resistance 12mm triangular shaped polyester fibre is use at rate of 0.25% by the mass of cementitious material. The test results for compressive strength at 3,7,28 and 56 days for plain HVFA concrete for all grades with and without meets codal requirement. The use of polyester fibres has increased the compressive strength to order of 12 to 15 %. Flexural strength using center point loading also meets the required parameters and fibre reinforced HVFA shows 16 to 23% increase compared to plain HVFA concrete at 28 and 56 days. There is notable increase in ductility of HVFA concrete which is the need of days for deign & construction of earthquake resistant structures.

PERFORMANCE ANALYSIS OF BIODIESEL FOR DOMESTIC USE

Authors:  Ademola A. Dare* , Adetokunbo Simon Callender, Adebambo Joseph Badejo

 

JERS/ Volume II/ Issue I/ January-March'2011/167-172

 

ABSTRACT
There is continued growing demand for alternative energy resources worldwide. One of the emerging energy alternatives being explored is Biodiesel. Biodiesel has been produced from varieties of plant and animal resources. However most of its targets have been for use as fuel for engines with little consideration for domestic purposes This work has examined the use of biodiesel for domestic use such as cooking. Three grades of biodiesel were produced by mixing ethanol with either vegetable oil, diesel or kerosine. The fuel was then tested with a constructed cooking stove. Biodiesel with diesel blend was found not suitable for use in domestic cooking while the blends with either vegetable oil or kerosene were suitable. However only the kerosene blend gave satisfactory performance for both pressure stove and wool stove. Pressure stove had better performance than wool stove for the kerosene blend. The work thus established that a blend of kerosene with ethanol can be used for domestic cooking without incurring any hazards. Equally it is established that biodiesel will perform creditably better with a pressure stove..

EMISSION ANALYSIS OF CI ENGINE USING RICE BRAN OIL AND THEIR ESTERS

 

Authors:  Ram Prakash, S.P. Pandey, S. Chatterji, S.N. Singh

 

JERS/ Volume II/ Issue I/ January-March'2011/173-178

 

ABSTRACT
This paper deals with performance Analysis of Compression Ignition Engine using alternative fuels as Rice bran oil and their ester after esterification for different engine load from 1.8 kg to 6.6 kg and different blending ratios like B0,B25,B50,B75,B100. Alternative fuels are typically produced through the reaction of a vegetable oil or animal fat with alcohol in the presence of the catalyst to produce their esters. With the help of above fuels in different blending ratio and different load we found the exhaust emission in terms of CO emission, HC emission, Exhaust gas temperature and smoke density and comparative performance analysis of both the fuel i.e. bio-fuels and their ester.