Volume 2 - Issue 3

The Influence of Vertical Thermal and Dissolved Oxygen (DO) Trend on Some Fish Species in Oguta Lake, Niger Delta Basin, Nigeria
C. A. Ahiarakwem, G.I. Nwankwor, E.S. Chinemelu, E.C. Nwaihu

Abstract:- Water samples obtained at various depths with the aid of Reuther probe in Oguta lake over a period of one year were analyzed for their thermal and dissolved oxygen contents using digital meters. The results show that the temperature values range from 22 to 28.4oC. The lowest and highest temperature values were obtained at depths of 7.5 and 2.0 m respectively. Generally , the temperature values were observed to decrease with increase in water depth thus indicating a warmer upper layer (epilimnion} and a colder bottom layer (hypolimnion).The investigation also shows that the concentrations of dissolved oxygen...........
Keywords:- Epiliminion, hypoliminion, thermal, Reuther probe, meromictic and eutrophic.

Design, Modelling & Analytical Analysis of Rotary Fixture for CNC with an Approach of Computer Aided Mass Balancing Method
N. P. Maniar, D. P. Vakharia

Abstract:- Various areas related to fixture are already been described by renowned authors, still there is an urgent need to apply all these research works to an industrial application. This paper presents design and development of rotary fixture for machining real industrial component - Flow TEE body of petroleum refinery. Actually HMC is the best solution for performing the required operations, but HMC costs around 12.5 million rupees whereas CNC turning centre..........
Keywords:- CNC, Computer Aided Mass Balancing Method, Design, mass balancing, rotary fixture.

Cost Analysis of Anticlastic Shell Roofs
Rakul Bharatwaj.R, Jayashree.S.M, Dr. Helen Santhi. M

Abstract:- This paper presents the cost analysis of anticlastic shell roofs. Shells are light weight structures with relatively small thickness, usually with no interior columns. The main classification of shells is based on gauss curvature - Synclastic shells and anticlastic shells. Anticlastic shells include hyperbolic paraboloid, conoid, and hyperboloid of revolution of one sheet. This paper focuses on hyperbolic paraboloid. Both reinforced concrete (Inverted Umbrella) and pre-stressed hyperbolic paraboloid..............
Keywords:- Cost analysis , Grid Roof system, Inverted Umbrella , Prestressed Hyperboloid , Shell Roof .

Characteristics Optimization of Different Welding Processes on Duplex Stainless Steels Using Statistical Approach and Taguchi Technique - A Review Guide
A.BalaramNaik, Dr.A.Chennakesava Reddy, Dr.B.Balakrishna

Abstract:- Material characteristics and welding parameters play a very important role in determining the quality of a weld bead. Duplex stainless steel (DSS) consists of approximately equal proportions of ferrite (δ) and austenite (γ) phases. The DSS joint quality can be defined in terms of mechanical behavior, heat input, heat-cooling rate, weld oxide formation, sigma phase formation in weld metal and base metal. Different welding process is used with the aim of obtained a best welding joint with the desired input parameters, good mechanical properties with minimum defects. Generally welding thermal cycle, dual torch, aging, heat treatment techniques are more influence on quality of weld joint.............
Keywords:- Duplex stainless steel; Welding, Quality of weld metal; Ferrite-Austenite; Taguchi, Optimization.

Motion of Robots in a Non Rectangular Workspace
K Prasanna Lakshmi

Abstract:- The paper deals with the geometrical aspect of the motion planning of multiple robots in a non rectangular workspace. Motion planning is dynamic in nature which is a property of the decoupled technique. Every robot in the considered workspace is reaching the destination which is a property of the centralized planning approach.............
Keywords:- Workspace, Decoupled Technique, Centralized Approach, Motion Planning

MHD Mixed Convective Heat and Mass Transfer Flow of a Visco-Elastic Fluid over a Stretching Sheet with Chemical Reaction and Temperature Gradient Dependent Heat Sink
P.H.Veena, K. Ashokkumar, V.K.Pravin

Abstract:- The effect of chemical reaction on mixed convective flow with heat and mass transfer of a visco-elastic in- compressible Walter's liquid B' model and electrically conducting fluid over a stretching sheet with temperature gradient dependent heat sink in heat transfer and chemical reaction in mass transfer are investigated in a saturated porous medium in the presence of a constant transverse magnetic field. The non-linear boundary layer equations with corresponding...........
Keywords:- chemical reaction term, visco-elastic parameter, stretching sheet, temperature gradient dependent heat sink / source, order of reaction

Further Generalizations of Enestrom-Kakeya Theorem
M. H. Gulzar

Abstract:- Many generalizations of the Enestrom –Kakeya Theorem are available in the literature. In this paper we prove some results which further generalize some known results. Mathematics Subject Classification: 30C10,30C15.
Keywords and phrases:- Complex number, Polynomial , Zero, Enestrom – Kakeya Theorem.

Design and Simulation of DC-DC Converter Used in Solar Charge Controllers
Arjyadhara Pradhan, Dr S.M Ali, Chitrlekha Jena, Puspapriya Behera

Abstract:- With the increasing Energy demand Conservation and effective Utilisation of Energy are very essential. Solar Charge Controllers helps in increasing the efficiency of the solar power transferred to the Battery. It consists of mainly Dc-Dc Converters. These Converters are mostly Dc Choppers which converts fixed Dc voltage to a variable Dc source. These Regulators are used in case of Solar Charge Controllers to increase or decrease the PV panel voltage to as that required by Battery. The DC voltage from the PV panel varies with the light intensity which depends on time of day and temperature. Similarly on the...........
Keywords:- Controller, Buck-Boost, Regulators, MPP, PWM

Influence of Interference of Symmetrical Footings on Bearing Capacity of Soil
Dr. S. S. Pusadkar, Ms. R. R Gupta, Ms. K. K. Soni

Abstract:- The bearing capacity and load-settlement behavior of footings from the isolated footing condition to the interference of adjoining footing is of major concern due to increase in urbanization and industrialization of cites. In the present study, an attempt has been made to model the settlement behavior of two footings placed with varying spacing on single layered soil deposit. The study revealed the interference affect the ultimate bearing capacity of adjoining footings. The ultimate bearing capacity was found to be influenced by its spacing. The ultimate bearing capacity of footings increased with decrease in spacing between the footings. The settlement of footings due to interference was found to be increased with decrease in spacing.
Keywords:- Interaction, Footing, Interface, Settlement and Bearing Capacity

The Commemorate Service Planning with Assistance-Oriented Architecture
Hung-Teng Chang, Rosa Ma, Pin-Chang Chen, Han-Chen Huang

Abstract:- As the market evolves, businesses are faced with a saturated market, shorter product life span, and consumer's demand for differentiation. In order to stay competitive, businesses must provide different services and offer packaged services to increase product value. Most funeral services are dull and monotonous in style. The overall service is not flexible and lacks choice to customization. Therefore, a funeral service design system that can customize funeral process and venue decoration would offer customers a better choice, hence meet their demand. During the funeral service, the food offered to the deceased......
Keywords:- Funeral service planning,Customization,Venue Design,Parking GPS,Service-Oriented architecture.

Speed Sensor less Control and Estimation Based on Mars for Pmsm under Sudden Load Change
K prasada rao, Dr Sukhdeo sao

Abstract:- Permanent magnet synchronous motors (PMSM) are appropriate for applications with load-independent speeds or synchronous operation with high accuracy under defined speed. In this paper analysis the structure and equations of the PMSM, direct torque control (DTC) and voltage space vector process then study model reference adaptive system (MRAS) estimators. The PI controller uses from estimate speed feedback and do the speed sensor less control........
Keywords:- permanent magnet synchronous motor, speed control, direct torque control, model reference adaptive system. Load modeling, estimation, analytical models.