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Volume 4 Issue 7 (July 2017)

S.No. Title & Authors Page No View
1

Title : Efficacy of Beauveria bassiana infection and subsequent oral treatment of ehtanolic plant extract on total haemocyte count and differential haemocyte count on 3rd day of fifth instar larvae of PM and CSR2 Bombyx mori L.

Authors : J. A. Chavan, G. P. Bhawane

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Abstract :

The present investigation shows inoculation of Beauveria bassiana causes change in Total haemocyte count (THC) and Differential haemocyte count (DHC). Subsequent treatment of plant extract Curcuma longa, Aegemone mexicana and Clerodendrum multiflorum showed the antifungal effect and maintain the normal physiological condition of B. bassiana treated larvae. After the treatment of plant extract the physiological condition is more or less similar to the control of both PM and CSR2 race of Bombyx mori L. The 25.78% and 22.09% THC was increased in B. bassiana inoculated larvae of both PM and CSR2 respectively.

1-5
2

Title : The Analysis Of The Monthly Global Solar Radiation On The Campus Of The Federal Polytechnic, Idah, Kogi State, Nigeria

Authors : Jegede. John Olu, Ale Felix, Abdullahi Ayegba, Agboola A. Olufemi

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Abstract :

It is certain that the global solar radiation of any location will vary with time and season, thus the mode of variation of it should be known for effective planning as this radiation has many applications in the daily lives of human beings. This research work is aimed at finding out the monthly global solar radiation on the campus of the Federal Polytechnic Idah, Kogi state, with the view to providing information for effective planning on some areas like environment, solar power systems, agriculture, and other related applications within and around Idah community. The work employed the use of two models - Hargreaves- Samanni and Angstrom models, using the data of average monthly maximum and minimum temperature, and daylight hours (July1, 1983 – June 30, 2005) obtained from earthdata.nasa.gov. It was observed from the results that there was variation in the average monthly global solar radiation on the campus with the two models. It was also observed that the maximum global solar radiation value with Hargreaves- Samanni model was bigger than that with Angstrom model. However, in terms of the minimum global solar radiation value, that of Angstrom model was greater than the one with Hargreaves- Samanni model. 

6-10
3

Title : On The Negative Pell Equation

Authors : A.Vijayasankar, M.A.Gopalan, V.Krithika

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The negative pell equation represented by the binary quadratic equation   is analyzed for its non-zero distinct integer solutions. A few interesting relations among the solutions are presented. Employing the solutions of the equation under consideration, the integer solutions for a few choices of hyperbola and parabola are obtained.

11-14
4

Title : Progress on Thermal Performance of Courtyard Buildings in Hot Humid Areas: A Review

Authors : Esraa Sh. Abbaas, MA Che Munaaim

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This literature review discusses the effect of design variables of courtyarded buildings, such as shape, orientation and shading devices of the courtyard, on thermal performance in hot humid climate. It is found that choosing appropriate shape of courtyard, taking the orientation into account and using good shading device can enhance the thermal performance in internal courtyard adjacent areas. In term of courtyard shape, central-close squared and U-shaped rectangular courtyards provide the optimum thermal performance compared with closed rectangular and U-shaped square courtyards, respectively. The courtyard orientation impact depends on the season, where during summer northern direction gives the optimum thermal performance due to high shading and wind speed, while during winter courtyard recommended to be oriented with an angle of 30o with respect to east to achieve high sunlit area. Last but least, the shading tools have a positive impact on thermal performance where using trees and vegetation show better performance compared with other types of roofing. However, having space between the roof of the courtyard and its opening level highly effect on the thermal performance. Further investigation on the effect courtyard walls material, size and number of openings, and material of courtyard roof shading on thermal comfort and energy consumption need be considered in future.

15-19
5

Title : A Comparative Analysis of Different Thermal Parameter Arrangements with Silicon Polycrystalline using PVSYST

Authors : Sujain Kumar, Deepika Chauhan, Devendra Kumar Doda

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To maximize the power generation from a limited area is one of the major concern due to increased land cost and unavailability of lands in urban areas. The solar PV module directly converts the incident solar radiations into useful electrical energy. The variation of temperature and solar irradiance are the major factors which affects the performance of the solar PV module. Shading on solar PV modules reduces the life span of the system as well as reduce the performance of the system. Here, A comparative analysis has been done with silicon-polycrystalline module having free mounted with air circulation, semi-integrated with air duct behind and integration with fully insulated back for the climatic condition of Surat, Gujarat, India.

20-29
6

Title : Assessment Result and Analysis on Teaching of Control Systems Course (ELEC 431) in Electrical Engineering Department (United Arab Emirates University)

Authors : Addy Wahyudie

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This paper discusses the assessment result and analysis of teaching Control Systems (ELEC 431) course in Electrical Engineering Department of United Arab Emirates University. The assessment is conducted using two inputs: the assessment tools (exams, quizzes, homework, project) and the student’s perception about their own achievement over the course. The assessments were conducted from Fall 2011-Fall 2014 or within four cycle of course’s offering. The study shows the continuous corrective actions within the course and its effect. In this study, we only consider the attainment of design aspect of the course. The attainment of the student regarding the design is tending to increase.  We also recorded the level of student satisfaction for the course and its instructor using the comparative study questioners. The result shows that the students appreciate the course and the instructor and the result is above the average of department and collage.   

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7

Title : Time Series Model and Analysis On Rainfall In Oshogbo Osun State, Nigeria

Authors : Alawaye A.I, Alao A. N

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This research work  statistical analysis of rainfall  is aim  to fit an appropriate model on the time series data on monthly distribution of rainfall in Osogbo Metropolis , to describe the behavior of rainfall on a monthly basis and to determine the variations that characterized rainfall data. The data on the monthly amount of rainfall between (2004-2015), were collected from Nigeria Meteorological Agency. The data were then subjected to time series analysis. The first step was to obtain the time plot in order to describe the observations under study. The time plot reveals that the rainfall data show high level of volatility characterized  by seasonal and irregular variations. The series moves up and down.In order to remove the seasonal variation, the researchers  subjected the data to seasonal decomposition or deseasonalization. The seasonal adjusted data were then used to plot Autocorrelation function plot method (ACF) and Partial Autocorrelation function plot (PACF). This series show a more stable series and the data was then model. The logistic model shows to be better and then used to forecast the rainfal for the next 2 years.

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8

Title : The Use of Linear Programming Problem To Minimize Fish Feeds

Authors : Alawaye A.I

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This research, application of linear programming problem on cost minimization on fish feeds was aimed to minimize  the cost of production of fish feeds. The data used was collected using both primary and secondary data. Linear programming problem was used to analyzed the data and the optimum solution was obtained at 5th iterations with fingerlings feeds to be 8/9 of tons and growers feeds to be 10/9  tons and  the minimum cost of producing the tones of fingerlings and growers is N498, 675.60. We then recommend that any fish farmer who really wants to embark on efficient and effective fish production should use linear programming problem to determine the minimums cost of production. In other to maximizes their profits.

38-40
9

Title : Numerical Simulation of Vortex Shedding at Triangular Obstacle for Various Reynolds Numbers and Times with Open FOAM

Authors : Ahmad Jafari, Seyyedeh Zahra Malekhoseini

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The present study aimed to simulate the two-dimensional flow around a triangular obstacle in a channel. Numerical study was performed by the open-source numerical model, OpenFOAM. IcoFoam solver was used to solve the equations governing the flow in the modeling. The Navier-Stokes and continuity equations are the dominant equations in this solver. In the first step, flow lines and velocity vectors were simulated for Reynolds numbers of 20, 30 and 35. The simulations showed that the separation of flow lines and the formation of vortex bubbles depend on the Reynolds number, even when this parameter slightly increases. In the second step, the flow lines at six different times with the time interval t/6 at Reynolds numbers of 150 and 200 were identified. Based on the results, it was indicated that only at the time of 150s a different pattern was observed for the flow lines. In the third step, as the Reynolds number increases, changes in the flow lines pattern were studied in a regime with Reynolds numbers of 4, 35, 70, 120 and 200, resulting in turbulence in the flow lines. To measure numerical stability during processing, the average and maximum values of Courant number were calculated at every stage of solution and implementation. The residual and velocity changes graphs were depicted based on location in the x-y plane to analyze the data. Finally, based on the verified results, the ability and power of the numerical model was evaluated and It is concluded that as an appropriate efficient model in this field.

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10

Title : Performance Analysis And Experimental Investigation On Exhaust Gas Heat Recovery For IC Engines Using Shell And Tube Heat Exchanger

Authors : D.S. Vidhyasagar, A.J. Infant Jegan Rakesh, M.Manikandan, S.Sathyanarayanan, M.Sridharan

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Increase in energy demand results in shortage of energy. Many effective means were under research to overcome shortage of energy. Recent trend researchers focussing on cogeneration and waste heat recovery in order to improve the efficiency of existing system as well as to avoid energy wastage. In this work waste heat from the exhaust gas is recovered by means of shell and tube heat exchanger to convert cold fluid in to hot fluid. In this system water is used as a working fluid. Water extracts thermal energy to estimate the exhaust heat obtainable from the engine exhaust gases. The exhaust gases which is passed through the tube side of the heat exchanger is obtained from the existing four stroke single cylinder diesel engine whereas water is passed through the shell side of the heat exchanger. The counter flow type heat exchanger arrangement is considered for the analysis. Therefore, the heat transfer characteristics of a system combining compression ignition engine and heat exchanger which recover waste heat from exhaust gas. Performance improvement in this type heat exchanger gives the better usability of low grade heat energy. 

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11

Title : The ICT in Agricultural Development of Bangladesh

Authors : Dr Mir Mohammad Azad, Atikul Islam Liton, Mohammed Naseer K

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Information is a key component in improving smallholder agricultural production and linkages to remunerative markets, thus improve rural livelihoods, food security and national economies. The dynamics of using phones among farmers linking them to market outlets and other service providers are discussed. . The paper isolate strength, weakness and threats while analyzing insights associated with results patterns. The findings showed that rural communities appreciated the use of phone as easy, fast and convenient way to communicate. Phone usage was accompanied by positive outcomes and opened opportunities like strong collective action among social groups for effective natural resource management.

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12

Title : Overview of construction safety best practices

Authors : Richard Brune

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Business related construction safety episodes keep on being a basic societal issue. Regardless of proceeded with endeavors, the industry has not seen any critical lessening in recordable damage rates in the most recent decade. A basic part in construction wellbeing administration is the recognizable proof of potential dangers to set up proactive physical or procedural controls that lessen danger presentation. Shockingly, ponders show that an expansive part of perils are not sufficiently recognized or surveyed, in this way trading off laborer wellbeing. To address this issue, promising site-based construction risk ID procedures were distinguished in a wide collection of writing and possibly leap forward systems were produced by a specialist board of construction safety experts in meetings to generate new ideas. The procedures were then organized considering their potential and appropriateness to construction utilizing the ostensible gathering method, encouraged by a cooperative choice emotionally supportive network. Accord investigation was led to check consistency inside the master board. A prehab wellbeing meeting-quality estimation apparatus to give dynamic input with respect to risk recognizable proof capacity and correspondence rose like the most significant system. This was trailed by a computer based increased vitality preparing condition. The consequences of this examination can be utilized by construction professionals to deliberately distinguish potential danger acknowledgment projects to supplement existing strategies. Future investigations will concentrate on approving discoveries through field-construct experimental tests with respect to dynamic construction ventures. Purpose: The purpose behind this paper is to comprehend what factors best advance or forestall manageable construction hones and set up the consistency of how supportability is measured. Design/Methodology: A Literature review considered the effect of the business to manageability and distinguished what activity and activities are now set up. Through this, the fundamental drivers, obstructions, measures, and benchmarks were recognized. The suppositions of building reviewing experts were looked for and examined. Findings: The paper proposed that monetary motivators/punishments and directions help to drive practical construction. Such budgetary ramifications are predictable with "reasonableness" being the greatest boundary featured. The dominant part of respondents trusted the business is assessing manageability issues, yet distinguished that all the more should be finished. Originality: Sustainable advancement is an indispensable piece of the lives and influences all parts of business operations. This paper gives an inside and out knowledge into the level of feasible advancement inside the construction business, recognizing suggestions for both the request and supply side.

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13

Title : Original Sin, Prophets, Witches, Communists, Preschool Sex Abuse, and Climate Change

Authors : Wallace Manheimer

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Many theologians, including Pope Francis, assert that the increase of carbon dioxide into the atmosphere, caused by burning fossil fuel, endangers the planet, and urge us to stop.  This article notes that fossil fuel has helped civilization advance worldwide, has alleviated abject poverty for billions, and that there is no substitute for it at this time.  Thus there is a strong moral component on this side of the issue as well, a moral component which many theologians, politicians, commentators, and scientists, neglect.  The bulk of this paper concerns assertions of damage from climate change, and then checks them out against available measurements in a way, which anyone can do.  While increasing CO2 in the atmosphere may be a concern, it is hardly a planetary emergency.  It is very likely treated as such by some, because of a new set of modern day ‘prophets’ who claim that they have access to knowledge that ordinary people cannot have.  It compares climate ‘prophets’ to other such ‘prophets’ in American history.

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14

Title : Intrinsic Safety Protection for Explosive Atmosphere: A Review

Authors : Dr. B. Ahirwal, Rashmi Prasad

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In the explosive atmosphere, there is always a high possibility of an explosion in the presence of electrical, electronic and non-electrical devices which in turn generate a spark or arc. Protection in the context of underground coal mines, oil mines, petrochemicals and refineries by intrinsic safety contributes to a design technique for explosion prevention by limiting electrical as well as thermal energy of circuit to such a level below which it cannot ignite an explosive atmosphere. For low power application like process data management and instrumentation intrinsic safety plays a significant role. In this article, a review of principles, design parameters and application are described.

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15

Title : Integrated Management System Based on the OHSAS 18001: 2007 and ISO 28000: 2006 Standards for a Logistic Services Company

Authors : Elias Alberto Bedoya Marrugo, Carlos Alberto Severiche Sierra, Dario David Sierra Calderon, Camilo Sierra Ferreira

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An industry as relevant as the transport and logistics of complex sectors that can influence the existence and the cost to the final consumer of products and merchandise in the markets globally. From the optimal control and control of all the resources involved and the internal operations carried out in this can the significant economic benefits and the survival of the company and the well-being of the workers, therefore dedicated efforts for the logistic organizations strictly apply the norms ISO 28000 And OSHA 18001, allowing the company to remain competitive and add to productivity requirements as well as security in the internal and external supply chain.

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16

Title : Aerodynamic Noise Analysis of Wind Turbine Blade

Authors : Gwo-Chung Tsai, Jau-Ching Jiang

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The main goal of this research is to study the noise of the wind turbine blade. The green energy is developed vigorously and the environmental problems were concerned. The blades of wind turbine applied by the wind will produce the torque and noise that depends on the wind velocity. In this research, three parameters: wind velocity, torque and noise were put together to get the best efficiency of the wind turbine blade. The finite element analysis is used to perform the analysis. The finite element model is created to use ANSYS/Workbench, then CFX is used to do the fluid dynamic analysis and calculate the sound pressure with different parameters. The optimization data for the wind turbine blade at different conditions can be obtained. All these data can be used to develop the design of the turbine blade.

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17

Title : Methodology of Accounting for the Local Surface Heat Exchanges for Investigation of Non-stationary Thermomechanical Processes in the Structure Elements of the Construction

Authors : Dr. S. Akhmetov, Dr. A. Kudaykulov

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The aim of the work was to develop a methodology for taking into account the presence of local surface heat exchanges in rods of finite length, often taking place in studies of the non-stationary phenomenon of thermal conductivity. The proposed methodology was oriented to the subsequent creation of a computational algorithm and its implementation on a personal computer using the universal DELPHI programming tool. This allowed the authors to complete the initial stage of the research works, which will subsequently take into account the internal heat sources in the rods of finite length and constant cross-section in the study of non-stationary thermal conductivity, as well as to develop new methods, approaches and models associated with them.

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18

Title : An Analytical Solution for Hoop Tension in Liquid Storage Cylindrical Tanks

Authors : Anand Daftardar, Shirish Vichare, Jigisha Vashi

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Design codes for liquid storage cylindrical tanks give values of design forces (hoop tension, bending moment and shear force) through a dimensionless parameter H2/Dt. The values of this parameter range from 0.4 to 16. The parameter H2/Dt encompasses key dimensions of the tank and gives corresponding coefficients for hoop tension, bending moment and shear force. However, for values of H2/Dt range below 0.4 and above 16, the coefficients are not easily available. Availability of these coefficients are crucial for design engineers who deal with variety of tank dimensions. This paper calculates the values of hoop tension coefficients for H2/Dt range from 0.1 to 100 by providing analytical solution. Further, the paper also gives maximum value of hoop tension coefficients from 0.1 to 100. It is observed that for H2/Dt range from 0.4 to 0.1, the decrease in the maximum hoop tension coefficients value is about 4 % and for H2/Dt range from 16 to 100 the increase is about 22 %.

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19

Title : Study on the Exact Solution For Natural Frequencies and Mode Shapes of the Longitudinal-Vibration Conic Rod Carrying Arbitrary Concentrated Elements

Authors : Jia-Jang Wu

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In this paper, a conic rod carrying arbitrary concentrated elements is called the conic rod system. First of all, the equation of motion for the longitudinal free vibration of a conic rod is transformed into a Bessel equation, and then the exact displacement function in terms of the Bessel functions is obtained. Next, based on the equations for compatibility of deformations and those for equilibrium of longitudinal forces at each attaching point (including the two ends of entire bar) between the concentrated elements and the conic rod, a characteristic equation of the form [H]{C}= {0} is obtained. Now, the natural frequencies of the conic rod system can be determined from the determinant equation |H| = 0, and the associated column vector for the integration constants, {C}, corresponding to each natural frequency, can be obtained from the simultaneous equation [H]{C}= {0}. The substitution of the last integration constants into the displacement functions of all the associated rod segments will produce the corresponding mode shape of the entire conic rod system. Finally, the important factors affecting the longitudinal vibration characteristics of a conic rod system will be investigated. To confirm the reliability of the presented technique, in this research, the exact solutions obtained from the presented technique were compared with the numerical solutions obtained from the conventional finite element method (FEM). Good agreement is achieved.

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20

Title : Quality Assessment of Hollow Sandcrete Blocks In the South Western Part of Nigeria

Authors : Awofadeju Ayinde. S., Akanni Ayotunde O., Iyiola S.

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The paper assesses the quality of hollow sandcrete blocks manufactured by block Industries in Osun, Oyo and Ekiti States the South Western part of Nigeria. Block samples were randomly collected from selected areas of the states; Osogbo, Ilesha, Ibadan, Ogbomosho, Aramoko and Ado-Ekiti. Sandcrete blocks were produced using 1:6 based on the requirements of the Nigerian Industrial Standards (NIS) 87:2000 standards. The blocks were subjected to wet and dry compressive test, dry density and wet density test. The aggregates were subjected to grading analysis and silt content analysis. The study revealed that all the sand aggregates used for the production of the blocks were substantially suitable for block making. The grading of the sand fall within the limit required by BS 882:1990. The results also showed that the compressive strengths for all the blocks tested were between 0.35N/mm2and 0.63N/mm2 which does not comply with the recommended standards (2.5N/mm2 to 3.45N/mm2 respectively) in (NIS) 87: 2000 series and 2.8N/mm2 in BS 6073-1:1981. It is concluded that sandcrete block in the South West part of Nigeria are of lower standard as a result of factors such as poor workmanship, mix ratio and method of curing, experience and skill of production crew etc, contributes to the poor quality of Sandcrete blocks and this made our blocks unsuitable for load bearing walls. Standardization of the block manufacturing processes and strict supervision of the industry by the professional body in Nigeria were recommended for improvement in the quality of block production.

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21

Title : Comparison between electromagnetic and electronic ballasts for fluorescent lamps in terms of power quality

Authors : Blume Mario, Conte Federico, Marzano Ezequiel, Alonso Velo

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Conventional lighting systems with an electronic control gear significantly improve energy efficiency when comparing the energy consumed by lighting appliances equipped this auxiliary device to conventional electromagnetic ballasts. However, electronic equipments generate disturbances in the grid which diminish the quality of the electric power of the network. The objective of the present study was to compare the harmonic distortion of electromagnetic and electronic ballasts. It is concluded that electronic ballasts cause a higher perturbation in the electrical power supply.

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