volume 4 ~ issue 9

The traditional approach in the analysis of axisymmetrically loaded short cylindrical shells has been to solve the fourth order differential equation using the Krylov's equation. This involved a transition from exponential functions to krylov's functions using Euler's expressions. This approach is grossly limited by the difficulty in the transition from exponential functions to Krylov's functions. A new approach to static analysis of C-C short cylindrical shell subject to internal liquid pressure is presented in this paper. This involves substituting a polynomial series shape function into the Pasternak's differential equation, by satisfying the boundary conditions for C-C short cylindrical shell, a particular shape function was obtained. This shape function was substituted into the total potential energy functional of the Ritz method and minimized to obtain the unknown coefficient. Stresses and deflections at various points of the shell were determined for different cases of aspect ratio with range 1 ≤ L/r ≥ 4. For case 1, maximum values of deflection, rotation, bending moment and shear force were 9.856*10-3metres, -3.23*10-3radians, -1366.64KNm and -9566.4639KN respectively. It was observed that as the aspect ratio increases from 1 to 4, the deflections and stresses decreases, and the shell tends to behave like long cylindrical shell.

Keywords - Axisymmetrically loaded, Boundary condition, C-C Short Cylindrical Shell, Internal liquid pressure, Krylov's function, Polynomial series shape function, Ritz method.

RADAR (RAdio Detection and Ranging) use modulated waveforms and directive antennas to transmit electromagnetic energy into a specific volume in space to search for targets. The targets within the volume reflect echoes back to the radar which are further processed to extract target information. A better SNR (Signal to Noise Ratio) to for radar surveillance is achieved. The results are provided by Matlab simulation.

Keywords: SNR (Signal to noise ratio).

Articulating the pitch angle of a turbine blade can improve performance by maintaining optimum design incidence and thus reduce the probability of flow separation and thermal stresses developed due to aerothermal loads for variable speed gas turbine engine applications. Potential benefits to Army Aviation are highly efficient (aerodynamically) turbine blades, possible reduction of the need for active blade cooling and thermal barrier coatings, increased fuel efficiency, power density, and the ability to fly faster and longer. The goal of this effort is to assess the benefit and feasibility of an adaptable variable pitch turbine blade for maintaining attached flow and optimal thermal design for a gas turbine engine. A technology concept study has been conducted to enable a viable adaptable turbine rotor blade that can enhance the performance and efficiency of future aircraft gas turbine engines. A typical aircraft turbine blade is used for this technology concept study. An adaptable turbine rotor blade, if made feasible, can lead to a leap ahead technology innovation in improving part-load efficiency of gas turbine engines.

Keywords: - adaptable turbine blade, articulating blade, gas turbine rotor blade, highly efficient turbine blade

The present study presents the effectiveness of Nigella sativa and Rumex dentatus against some selected microorganisms which are known to cause diseases in human beings and the comparative study of extent of antimicrobial properties of various extracts. Petroleum ether, Methanol and Aqueous extracts of seeds and whole plant respectively were prepared and then tested against pathogenic microorganisms such as Pseudomonas aeruginosa, Salmonella typhimurium, Klebsiella pneumonia and Escherichia coli using agar well diffusion method. The zone of inhibition for Nigella sativa was found maximum in petroleum ether extract of 30 mm at a dose of 250μg/ml against Salmonella typhimurium while as at the same concentration the highest inhibition zone diameter of 21mm was recorded against K. pneumoniae for methanol extract in case of Rumex dentatus.

Keywords: - Microorganisms, Nigella sativa, Rumex dentatus, antimicrobial and Pathogen.

In this fast world the demand for energy is ever increasing. With increase in energy production. There is heavy increase in pollution and depletion of fossil fuels they are going to extinct very soon, So the best way to save our nature and increase energy production is by using renewable energy. In this paper I am going to discuss about production of electricity through wind turbine mounted over a moving vehicle. We are implementing a very advanced H-Bridge converter for this conversion of alternate current produced by permanent magnet moving generator to direct current. The main reason for this paper is to explain about utilization of wind energy on a moving vehicle which is being wasted and to extract electricity without any fluctuations.

Keywords - Wind Energy, H-Bridge.

This article deals with a single period inventory model with inventory returns and special sales. The demand is assumed to occur in a uniform pattern during a planning period say, tp. Both non-deteriorating items and deteriorating items are considered for the discussion

Keywords:optimal quantity, disposable cost, cost function, order level system

A field experiment was conducted at Cotton Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth , Akola during the year 2014-15 with a view to study the moisture conservation techniques and nutrient requirement for cotton variety AKH-081 which is suitable genotype recommended for High Density Planting System for Vidharbha condition of Maharashtra. The experiment was laid out in split plot design replicated thrice with twelve treatments. The plot size was 6.0 x 4.5 meters spacing at 60 x 10 cm with 1.66 lakh plants per hectare. Three moisture conservation techniques consisting flat sowing, opening of furrow at 40-60 days after sowing and sowing on Broad Bed Furrow (BBF) 3 rows marked at 60 cm along with nutrient management levels RDF (60:30:30 NPK kg ha-1) ,RDF + 2.5 kg Zn ha-1, 125 % RDF (75:37.5:37.5 NPK kg ha-1) and 125 % RDF +2.5 kg Zn ha-1. The growth parameters viz. Plant height and sympodia was significantly influenced due to different moisture conservation techniques. BBF exihibited highest Plant height, Sympodia and Dry matter over the other parameter. The plant height, sympodia and dry matter per plant was increased significantly with increased in nutrient levels with micronutrients for high density planting system of cotton. Nutrients with different levels significantly influenced the yield attributes i.e Boll weight and Seed cotton yield under high density planting system. Significantly highest Seed cotton yield of (1786 kg ha-1) and was recorded with 125 % RDF + 2.5 kg Zn ha-1 which was at par with 125 % RDF. The highest gross monetary return, net monetary returns and benefit cost ratio was recorded with 125 % RDF (75:37.5:37.5 NPK kg ha-1) + 2.5 Kg Zn ha-1 which was at par with125 % RDF (75:37.5:37.5 NPK kg ha-1) which is the need of higher plant density. The highest WUE (3.02 kghamm-1) was noticed in 125 % RDF + Zn.

Keywords: - BBF, HDPS, moisture conservation practices, nutrient management and SCY

Many Institutions of higher learning in developing countries are adopting and implementing cloud computing in their efforts to provide information technology support necessary for administrative, educational, and research activities. Cloud computing delivers on demand provisioning of IT resources on a pay per use basis. This study discusses the adoption and implementation of Cloud Computing using the TOE framework. To achieve the purpose of the study, a critical analysis of relevant literature was conducted. An overview of the institutions technological, environmental and organizational issues that need consideration is done and suggestions for adoption and implementation strategies made. The study concludes that the TOE Framework is appropriate for the technological adoption of cloud computing in institutions of higher learning

Keywords: - Cloud computing, TOE framework, learning institutions, developing countries

Fivegully sites from five villages namely Uruegbe, Akala-etiti, Umuazu, Dianokwu and Dimechem were selected in Umuoji and soil samples collected from the various locations respectively, to evaluate the impact of gully erosion within the environment in Umuoji. Results indicated that the soil samples have Atterberg limit that might be considered low, while liquid limit (LL) ranged from 25 – 30, the plasticity index (PI) ranged from 1 – 5%, which suggested that the soils are slight plastic. Moisture content was moderate. Chemical analysis, on the other hand, revealed that the soil samples are fairly low. Organic matter content ranged from 7.4 - 12%, the soil PH level ranged from 5 – 6 which is within slightly acidic and moderate acidic. Engineering properties and physio-chemical characteristics of soil samples from gully selected area, thus, provided insights into the contributing factors of gully formations that are prevalent in the Umuoji environment. Concrete tracing and backfilling of gully affected areas is recommended to reduce the impact of gullying or the force of rain-drop. This will reduce the formation and widening of the incipient gullies.

Keywords -Factor, Gully erosion, Soil properties, Umuoji.

The presenceof some heavy metal pollutants which are deposited on soil in the Eleme environment due to the operational activities of some companies in the area have been studied. Some soil samples in areas situated around industrial installations were collected and analyzed using Atomic Absorption Spectrophotometer (AAS). Results obtained show the presence and concentration distributions of nine heavy metals. The metals are Iron (Fe), Manganese (Mn), Zinc (Zn), Lead (Pb), Copper (Cu), Chromium (Cr), Cobalt (Co) and Cadmium (Cd). It was observed that over 90% of each of the metals was located in communities hosting the industrial corporations while the remaining 10% is distributed to areas away from the source or host communities. This reveals that, a link exists between the pollutants and the activities of these industries.

Keywords: Pollutants, heavy metals, industrial, soil, environment

In our country as large number of woman deliver at home, usually conducted by untrained dias, incidence of prolapse is higher. The etiology of prolapse was discussed by ARETAEUS, a Greek physician who believed procedentiato be result of weakness of ligaments of the uterus. There are multiple etiological factors in the developed of prolapse. Diagnosis of prolapse at the earliest will help to reduce the complications of prolapse as well as continue child bearing function of the young woman.

Keywords: - Prolapse, Parity, delivery

A computer based wireless automobile wheel alignment measurement system using accelerometer is presented in this paper, which has the advantages of simple circuit, low cost , high resolution with high working reliability. The causes and effects of improper wheel alignment by traditional methods are analyzed in the model. In this system wireless transmission techniques are adopted to transmit data between measuring unit and computer. This makes the measurement operation much easier. This paper presents unique and innovative use of accelerometer for the measurement of automobile wheel parameters, such as camber and toe. The hardware and software realizations are also explored in this paper. The system practical applications shows that its performance meets the design requirements.

Keywords: -Wheel alignment, Toe, Camber, and Accelerometer

Chemical engineering as such, has just a little more than a hundred years of existence. During this time the teachingof this profession has changed as generated research, data, and books produced innovations in curriculum and new paradigms in education. The development of this discipline has influenced the creation or modification of others, such as environmental engineering, food engineering, bio-engineering, electrochemical engineering, metallurgical engineering, etc. The future presents new challenges and opportunities for interdisciplinary development such as nanotechnology, new materials, bio-fuels and the climate control.

The Half Power Diameter (HPD) which is also called Full –Width at Half-Maximum (FWHM) is being used in various disciplines where the optical instruments responses are degraded very much due to various factors like, atmospheric turbulence, aberrations, vibrations, etc,-----. In the present paper, we have studied the FWHM or the HPD of an optical system with a set of Higher-Order parabolic filters. These filters are known to be dependence of increasing the resolving power of an optical system. Dependence of FWHM or the HPD on various parameters of the super resolving filters under consideration by us has been found out.

Key-words: Resolution, HPD, FWHM, Fourier optics, etc

The quality of water sources in the Central Gonja District in the Northern Region of Ghana has been questioned due to activities that pollute water in the area. This research analysed the quality of domestic water sources in the Central Gonja District in terms of pH, EC, Turbidity, Total hardness, Nitrate and Faecal coliform. One hundred and eight (108) water samples were collected from boreholes, rivers, rainwater and dam in the wet and dry seasons within six months. The samples were analysed in the laboratory according to the procedures and protocols outlined in the Standard Methods for the Examination of Water and Wastewater for pH, turbidity, total hardness, nitrate and faecal coliform. Analysis of the water sources showed that the parameters of boreholes measured were seasonally affected except for conductivity which was high in the dry season. All the parameters for river and dam water varied with the seasons. In relation to faecal contamination, the borehole, river water and dam were seasonally affected, and unsuitable for drinking without treatment. Based on the WHO guidelines, rainwater in the area can be regarded as potable owing to its higher quality over the other water sources in the study area. Generally, rainwater can be recommended for drinking, cooking, bathing and washing for the people of Central Gonja District.

Key-words: Dam; River; Borehole; Rainwater; Season.

Large penetration of non-conventional sources of energy (such as wind and solar) into the utility grid usually leads to power quality deterioration of the net system due to the intermittency nature associated with such energy sources. Power quality parameters that may likely be disturbed by such interconnection include voltage profile, frequency waveform, power factor, as well as active and reactive power of the power system. However, grid operators and consumers at all level of usage requires a perfectly balanced three phase a.c power of constant frequency and magnitude with smooth sinusoidal wave shape. In order to compensate for such disturbances, Flexible A.C Transmission System (FACTS) controllers were developed. This paper presents a technological review of different types of FACTS controllers and their application for power quality improvement in a grid network composing of conventional and non-conventional energy sources.

Key-words: FACTS Controller, Power Quality, Reactive Power, Voltage Regulation.

Energy analysis, thermodynamic second law and Rankine cycle are universal method for enhancing the performance of power plant. Experimental data of 75MW power plant was obtained, mass; energy balance and thermodynamic second law were used to analysis the exergy efficiency while Rankine cycle was used to calculate the overall efficiency of the plant as well as varying the condenser pressure. Results obtained showed that an increase in the reference environment temperature increases the thermal, Rankine and exergy efficiency of the plant. Also as the condenser pressure increases, the efficiency of the plant decreases. The condenser pressure must be reduced in order to decrease the cause's irreveribilities in the system. Also, the plant should be operated above 50% of the operating capacity of the plant, to minimize wastage of energy consumption because more energy will be generated in the boiler even when not in used.

Key-words: Energy analysis, energy efficiency, exergy analysis, exergy efficiency, power plant, rankine cycle, laws of thermodynamic.

This study was conducted to determine the level of effectiveness managing zakat maal and the factors that influence in the city of Kendari Southeast Sulawesi. Data collection methods used were observation and in-depth interviews managing zakat and mustahik, while the method of analysis was done descriptively qualitative.The results showed that: (1) The effectiveness managing zakat maal in the city Kendari Southeast Sulawesi , in terms of the level of potential exploration zakat, the number mustahik served, the accuracy of the number and types of distribution zakat, as well the success rate of economic empowerment programs mustahik, all located the very low level of effectiveness; and (2) factors affecting the low levels of effectiveness managing zakat maal, include: (a) Awareness obliged to pay zakat maal is still relatively low; (b) There are many muzakki who do not deposit their zakat through the amil zakat institute formal ; (c) Data calculated zakat potential is still too coarse and less realistic; (d) The low level of public trust to amil zakat institutions; (e) Data on the number mustahik recorded on each amil zakat institutions is much smaller than the number of actual mustahik; (f) Operationally, the sample amil zakat institutions does not have a networking up to the village level; (g) The absence of complete data on the social and economic characteristics mustahik; (h) There is a tendency amil zakat institutions to cover the amount mustahik more, whereas the number of zakat funds will be disbursed very minimal; (i) The amount of funds allocated to mustahik too small and does not match the required amount; (j) The behavior and orientation mustahik more indigent consumptive nature; and (k) Amil zakat institutions does not do business guidance and supervision in the use of zakat funds that have been allocated to mustahik.

Key-words: Zakat Maal, Effectiveness, Managing

Commercial corridor in areas surround Jakarta has been rapidly growth. Some of this commercial corridor grows without any proper planning. Commercial corridor is created from available infrastructure that was used to connect some developed area. The rapid growth of commercial corridor shows irregularity and heterogeneity. The difference shape and dimension of parcel get similar treatment of building code. The characteristic of this commercial corridor created from the relationship of parcel shape and dimensions with building code as the controller. Relationship of parcel shape and dimensions with regulation can be analyzed easier using parametric simulation tools. The result of parametric simulation tools shows the characteristic of corridor as correlation between all variable. This paper uses one representative segment of corridor commercial in Serpong Tangerang.

Key-words: Corridor commercial, regulation, parcel

Operation of a grid connected hybrid system for renewable energy sources has been presented. The hybrid system composed of a photovoltaic (PV) array and a proton exchange membrane fuel cell (PEMFC) is considered. The operation modes used in the hybrid system are unit-power control (UPC) and the feeder-flow control (FFC) modes. In the UPC mode, variations of load demand are compensated by the main grid because the hybrid source output is regulated to reference power. Renewable energy is currently widely used because fossils are known to endanger the environment. One of these resources is solar energy. The photovoltaic (PV) array normally uses a maximum power point tracking (MPPT) technique to continuously deliver the highest power to the load when there are variations in temperature. The disadvantage of PV energy is that the PV output power depends on weather conditions and cell irradiation and temperature, making it an uncontrollable source. Moreover, the sun is not available during the night. In order to overcome these inherent drawbacks, alternative sources, such as PEMFC in the hybrid system are used. By changing FC output power, the hybrid source output becomes controllable. Therefore, the reference value of the hybrid source output is determined. In the FFC mode, the feeder flow is regulated to a constant, the extra load demand is picked up by the hybrid source, and, hence, the feeder reference power must be known. Thus the hybrid system can maximize the generated power when load is heavy and minimizes the load shedding area.

Key-words: Fuel cell, hybrid system, micro grid, photovoltaic, unit power control, power management.

The focus of the study was to develop the micromechanical model associated with proper damage model to predict the overall mechanical behavior of fiber/matrix unidirectional laminates. The present and first investigation studies the influence of fiber-matrix interface on the behaviour of fiber reinforced composite lamina using micromechanical models. Mechanical properties E1 and E2 are determined at various volume fractions. The second investigation studies the micro-thermo elastic behaviour of the square unit cell of a hybrid fiber reinforced composite lamina. Later this model is extended to predict the coefficients of thermal expansion of graphite-boron hybrid fiber reinforced lamina for various volume fractions.In the third investigation, an analytical solution of the thermal stresses for a fiber embedded in a matrix is presented based on the idea of the finite element and under some simplifying assumptions. The analytical solution to the problem is found for the case when the length of the embedded bar (fiber) is much greater than its radius, and the Young's modulus of the matrix is much less than that of the fiber. The problem is also solved numerically by means of finite element analysis using ANSYS 10.0. Both results are compared and it is shown that both approaches coincide very close qualitatively and quantitatively although significant discrepancies may appear at specific points for specific cases. For all above three cases 3-D finite element models have been developed from the representative volume elements of the composite which are in the form of square unit cells. The finite element software ANSYS 10.0 has been successfully executed to evaluate the properties