Academic Research Publishing Agency Press
International Journal of Research and Reviews in Applied Sciences
ISSN: 2076-734X, EISSN: 2076-7366

Volume 5, Issue 1 (October, 2010)

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1. EARLY PREDICTION OF LATERIZED CONCRETE STRENGTH BY ACCELERATED TESTING
by Felix F. Udoeyo, Robert Brooks, Philip Udo-Inyang & Richard O. Nsan
Abstract

This paper presents the results of a laboratory investigation on the efficiency of the boiling water method of accelerated strength testing to predict the 28-day compressive strength of laterized concrete (concrete containing laterite as full or partial replacement of sand). The results of the work showed that the accelerated strength of the concrete was between 72 and 84% of its 28 days strength. A regression model relating the accelerated strength to the 28-day compressive strength based on the generated data is herein proposed as a power equation for use by engineers and other construction professionals for quality control and early strength assessment during construction of civil engineering infrastructure involving laterized concrete.  


2. ANALYSIS OF PASSIVE AND SEMI ACTIVE CONTROLLED SUSPENSION SYSTEMS FOR RIDE COMFORT IN AN OMNIBUS PASSING OVER A SPEED BUMP

by T. Ram Mohan Rao, G. Venkata Rao, k.Sreenivasa Rao & A.Purushottam

Abstract This paper describes the modeling, and testing of skyhook and other semi active suspension control strategies. The control performance of a three-degree-of-freedom quarter car semi active suspension systems is investigated using Matlab/Simulink, model. The objective of this paper is to present a comprehensive analysis of   novel hybrid semi-active control algorithms and to compare the semi-active and passive systems in terms of human body vibrational displacements and accelerations. A theoretical model of the human seated model is developed in order to simulate the vertical motion of the Passenger in an omnibus when the vehicle passing over a speed bump. The mathematical model   of these systems is presented. Ride comfort of off-road vehicles can be estimated by replacing the normal passive dampers in the vehicle suspension system with controllable, two-state, semi-active dampers.

3. MONITORING OF WELDING WORK ENVIRONMENT IN SMALL AND MEDIUM INDUSTRIES (SMIs)
by A.M Leman, A.R Omar & M.Z.M Yusof
Abstract

Welding process is common in manufacturing industry especially for car component assembly. The demand on vehicles in development contry has push the SMIs to contribute the economic forward.The purpose of this study is to monitor the toxic gases level in the welding process in SMIs. The case study was done in two car component manufacturer which is a supply for national car. The data from monitoirng process was analyze and compare with the regulation and standards. Futhermore from the monitoring process, the data will used as a baseline for the furthur action as a need to comply with the regulation set-up by the government. The monitoring as a key of the occupational safety and health(OSH) approach in welding process to improve the quality of work environment has significanlty evaluated.


4. SIMULTANEOUS APPROXIMATION BY A NEW FAMILY OF MIXED SUMMATION-INTEGRAL TYPE OPERATORS
by R.K. Mishra, S.P. Pandey, Ekta Pandey & Anjali Yadav
Abstract

In the present paper we introduce a new family of mixed summation integral type operators to approximate the functions integrable on [0, infinity). We obtain an error estimation formula and an asymptotic formula by these operators in simultaneous approximation.


5. SINGULARITY ANALYSIS OF SINGLE-DOF SPHERICAL MECHANISMS USING INSTANTANEOUS POLES
by Soheil Zarkandi, Mohammad Reza Esmaili & Hamid R. Mohammadi Daniali
Abstract

Instantaneous poles have properties that are the spherical counterparts of instant centers; however, they are not completely used to study the kinematic behavior of spherical mechanisms. Instantaneous kinematics of a mechanism becomes undetermined when it is in a singular configuration (singularities); this indeterminacy has undesirable effects on static and motional behavior of the mechanism, so these configurations must be found and avoided. This paper presents a new geometrical method to find singularities of single-dof spherical mechanisms. First, mechanical advantage of single-dof spherical mechanisms is obtained using the concept of instantaneous poles; and then it is used to find geometric conditions corresponding to each type of singularities, occurring in this class of mechanisms.


6. WAVEGUIDE GRATING USING QUANTUM WELL INTERMIXING
by Ramesh K. Sonkar & Utpal Das
Abstract

In this paper, a design of waveguide Bragg grating suitable for CWDM application is presented. The grating structure is generated by using fluorine ion implantation and anneal induced quantum well intermixing. Coupled mode theory and perturbation analysis has been used to model the grating and diffusion equations and Schrödinger wave equations are used to model the QW energy while interdiffusing thus giving the absorption coefficient to calculate the refractive index. The proposed device processing is similar to those used in nominal microelectronics processing. A channel bandwidth of 13nm and cross-talk in between -5dB to -10dB is obtained.


7. ON THE LOCAL PROPERTY OF SUMMABILITY OF A FACTORED FOURIER SERIES
by U.K.Misra, Mahendra Misra & B.P.Padhy
Abstract

In this paper we have established a theorem on the local property of summability of a factored Fourier series.  


8. ON AN IMPROVED WEIGHTED AND STANDARDIZED FATALITY INDEX USED FOR ESTIMATION OF CASUALITIES AMONG JE CASES
by Purnima Singh & Sheela Misra
Abstract

Japanese Encephalitis (JE) a dreadful disease of viral origin has attacked South East Asian Regions especially the BBIN (Bangladesh Bhutan, India & Nepal) Countries. In India JE has been occurring in the endemic form since long back particularly in northern states. Eastern parts of Uttar Pradesh (UP) particularly Gorakhpur division is the worst hit division of UP in India. JE started in year 1973 in an epidemic from in Gorakhpur division and other districts of U.P. Since then U.P. has been facing the outbreak of JE; however in the recent years every case is reported from the endemic areas .In this paper we have proposed a new measure of case fatality rate for JE which takes in to account the age and sex distribution of the population under consideration.


9. FINDING TIME QUANTUM OF ROUND ROBIN CPU SCHEDULING ALGORITHM IN GENERAL COMPUTING SYSTEMS USING INTEGER PROGRAMMING
by Samih M. Mostafa, S.Z. Rida & Safwat H. Hamad
Abstract

In Round Robin Scheduling, the time quantum is fixed and then processes are sched­uled such that no process get CPU time more than one time quantum in one go. If time quantum is too large, the response time of the processes is too much which may not be tolerated in interactive environment. If time quantum is too small, it causes unneces­sarily frequent context switch leading to more overheads resulting in less through­put. In this paper, a method using integer programming has been proposed to solve equations that decide a value that is neither too large nor too small such that every process has reason­able response time and the throughput of the system is not de­creased due to unneces­sarily context switches.


10. TESTABILITY OF SOFTWARE SYSTEMS
by Sanjeev Patwa & Anil Kumar Malviya
Abstract

Software testing is one of the most expensive phase of the software development life cycle. Testing object oriented software is more expensive due to various features like abstraction, inheritance etc. The cost of testing can be reduced by improving the software testability. Software testability of a class is generally measured in terms of the testing effort which is equal to the number of test cases required to test a class. Hence testability can be improved if the test cases can be reduced. Software contracts (method preconditions, method postcondtions, and class invariant) can be used in improving the testability of the software. The paper provides some suggestions that will inspire teams to make their software products more testable. It cites examples of testability features that have been used in testing various software products, it also provides a detailed exploration of how testability issues affect GUI test automation and what kinds of provisions testers must make when testability is lacking.


11. EFFECT OF RICE MILL WASTEWATER ON GROWTH, REPRODUCTION AND METABOLISM OF DRAWIDA WILLSI (OLIGOCHAETA) UNDER LABORATORY CONDITIONS
by Abanti Padhan & Sanjat K. Sahu
Abstract

The effect of rice mill wastewater on the growth, reproduction and metabolism of Drawida willsi, Michaelsen earthworm was studied under laboratory conditions. Prior to the experiment, the physicochemical characteristics of the rice mill wastewater were measured. The wastewater revealed an alkaline pH (8.0) with low concentration of DO (0.9 mg l-1), nitrate (0.5 mg l-1), phosphate (21 mg l-1) and sulphate (40 mg l-1), moderate concentration and COD (630 mg l-1), chloride (140 mg l-1) and TDS (670 mg l-1), and high concentration of total suspended solids (530 mg l-1) and BOD (450 mg l-1).  Moreover, the wastewater was rich in sodium (235 mg l-1), total phenols (35 mg l-1) as well as silica (58 mg l-1). Drawida willsi is a dominant earthworm (>80% both in number and biomass) in the crop fields of India and therefore was used as the test specimen. A 96-hour toxicity test of juvenile immature and adult age groups of D. willsi was conducted in different concentrations of rice mill wastewater, both by suspension and artificial soil methods. The toxicity test revealed no mortality of any age groups of D. willsi even at 100% wastewater. Experiments on growth, reproduction and metabolism were, therefore conducted up to 100% wastewater (0, 25, 50, 75 and 100%) for a period of 105 days to assess the suitability of rice mill wastewater for agricultural purpose.  Growth of D. willsi earthworm showed significant increase in 50% wastewater treated soil and it was significantly reduced, when the concentration of wastewater irrigation exceeded a level of 75%. Like growth, the peak as well as average rate of reproduction of D. willsi was stimulated up to 50% wastewater treated soil. Both the rates were significantly dropped at or above 75% wastewater treated soil. In addition to this, D. willsi exhibited a delay in reproductive peak by 15 days in 75 and 100 % wastewater treated soil. Unlike growth and reproduction, the respiratory and excretory activities of D. willsi did not show any significant change up to 50 % rice mill wastewater irrigated soil. A remarkable increase in metabolic activities was observed from 75% wastewater treated soil and the increase was maximal at the highest concentration tested (100%). However, in control as well as wastewater treated soil, the rate of respiration of D. willsi went on decreasing, as the earthworm grew older up to 105 days. The adverse effect of rice mill wastewater on growth, reproduction and metabolism at higher concentrations may be due to alkaline pH (8.0). Besides pH, other parameters like higher contents of polyphenols, silica and sodium in wastewater were also responsible to impede the growth, reproduction and metabolism of D. willsi in soil. However, in diluted concentrations of rice mill wastewater (i.e. up to 50%), significant increase in growth and reproduction with little or no change in metabolism was noticed. This may be due to the fact that at lower concentrations, the toxic substances being in diluted form stimulating the growth and reproduction of D. willsi in soil without causing any adverse effect to metabolism. So on the basis of our findings, we suggest that rice mill wastewater should be either diluted to at least 50% or treated to make it suitable for agricultural purpose.


12. STATISTICAL STUDIES AND ECOLOGY OF BENTHIC FORAMINIFERA FROM THE DEPOSITIONAL ENVIRONMENT; A. CASE STUDY BETWEEN MANDAPAM AND TUTICORIN, SOUTH EAST COAST OF INDIA
by M.Suresh Gandhi & A.Solai
Abstract

The study area extends for 150 km from Mandapam to Tuticorin, Gulf of Mannar, and Tamil Nadu.  Before the commencement of sample collection, a base map in the scale 1: 50,000 was prepared using the toposheets (NO. 58L/13, 58L/1 and 58M/16). The fieldwork was done during the month of March, 2006. A total of 74 sediment samples were collected from beach (6) Offshore (46) and 22 estuarine in the study region.  The offshore samples were collected at six transects keeping the stations at Mandapam (5 nos), Valinokkam (5 nos), Vaippar (5 nos), Vembar (5 nos), Kallar, (5 nos)  Tuticorin (5 nos) , Off Tamiraparani (10 nos) and Punnaikayal  ( 6 nos) Generally, geologists are concerned with complex data set derived out of large amount of samples or variables. Since, the manual interpretation or classification of the data is tedious and involves lot of time; geologists take the help of statistical analysis to arrive at meaningful conclusion. In order to have reasonable interpretation and better understanding of the environmental settings that prevailed in this area, the statistical analyses such as Factor analysis, Species diversity, are being employed here.














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