Series - 1 [November- 2018]

Paper Title :: Numerical Investigation Of Internal Flow In A Solid-Liquid Two-Phase Flow Centrifugal Pump
Author Name :: Yu-Liang Zhang || Yan-Juan Zhao || Hai-Bing Cai || Can-Fei,Wang
Page Number :: 01-09
:: 10.9790/1813-0711010109   

The solid-liquid two-phase flow centrifugal pumps are widely applied in reality, but the complicated flow in pump makes plentiful of flow rules not be completely revealed so far. Theory research and design method concerning them aren't very mature, so low efficiency, more abrasion and poor reliability always universally occur. To enhance design capability of two-phase flow pump, two-phase flow behavior of 3-D flow field requires to be completely mastered. At present, large numbers of researches mainly focus on a designated geometry relative position between impeller vane and volute tongue, while these flow characters of different relative positions don't be research in detail, especially two-phase flow pump. The mathematical model of 3-D flow field of two-phase flow centrifugal pump is established by using the computational fluid dynamics(CFD)theory in the paper. In calculation region, multi-block mesh technology and local mesh refinement technology...............

Keywords - Two-phase flow; centrifugal pump; numerical simulation; experimental research

@article{key:article,
author = {Yu-Liang Zhang || Yan-Juan Zhao || Hai-Bing Cai || Can-Fei,Wang},
title = {Numerical Investigation Of Internal Flow In A Solid-Liquid Two-Phase Flow Centrifugal Pump},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {01-09},
month = {November}
}
Paper Title :: Influence Of Temperature On The Mechanical Behavior Of ABS
Author Name :: A. En-Naji || N. Mouhib || M. El Ghorba
Page Number :: 10-16
:: 10.9790/1813-0711011016   

The purpose of this article is to investigate the influence of temperature on the mechanical behavior of acrylonitrile Butadiene Styrene from a wide range of uniaxial tensile tests conducted from room temperature in the laboratory (22 ° C) to at 180 ° C, near the melting temperature (195 ° C). Knowledge of the mechanical behavior is essential to predict the life of the components in order to avoid any sudden interruption of service. In this context, our study aims to predict the life span and know the limits that must not be exceeded, namely the identification of the three stages of damage: initiation, progression and sudden acceleration. The estimation of the degree of damage by the model of static damage leads to the theoretical identification of the three stages of damage evolution. Subsequently, a theoretical re-evaluation of the level of damage was carried out by a judicious adaptation of the theoretical model proposed in the unified theory of damage. Theoretical and experimental results showed a good agreement.

Keywords - Damage, Mechanical behavior, Polymer, Reliability, sudden rupture, Temperature, Tensile tests.

@article{key:article,
author = {A. En-Naji || N. Mouhib || M. El Ghorba},
title = {Influence Of Temperature On The Mechanical Behavior Of ABS},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {10-16},
month = {November}
}
Paper Title :: Dose Verification With Different Ion Chambers For FFF Energy Plans
Author Name :: Bora Tas || Ismail Faruk Durmus
Page Number :: 17-20
:: 10.9790/1813-0711011720   

Verification of patient plan is very important in stereotactic treatments. VMAT plans were prepared with 6MVFFF or 10MV-FFF energies for 25 intracranial and extracranial stereotactic patients. Absolute dose was measured for dose verification in each plans. Iba CC01, Iba CC04, Iba CC13 ion chambers placed at a depth of 5cm in solid phantom (RW3). Also we scanned this phantom with ion chambers by Siemens Biograph mCT. QA plans were prepared by transferring twenty five patient plans to phantom assemblies for three ion chambers. All plans were performed separately for three ion chambers at Elekta Versa HD linear accelerator.........

Keywords - Patient QA, Ion Chambers SRT/SBRT QA.

@article{key:article,
author = {Bora Tas || Ismail Faruk Durmus},
title = {Dose Verification With Different Ion Chambers For FFF Energy Plans},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {17-20},
month = {November}
}
Paper Title :: Decline Curve Analysis and Production Forecast Studies for Oil Well Performance Prediction: A Case Studyof Reservoir X
Author Name :: E. Annan Boah || A. Aidoo Borsah || E.T. Brantson
Page Number :: 21-30
:: 10.9790/1813-0711012130  

This paper focused on predicting the future production rate of an oil well using decline curve analysis and reservoir simulation. KN well 2A was used as the case study.Based on past production history, standard curves were generated usingexponential, hyperbolic and harmonic decline model equations from which comparative study of production decline rate trend analysis was carried out. The model equations were used to project future oil productions for a period of20 years. The exponential, hyperbolic and harmonic decline models yielded cumulative production values of 1117857 bbls, 1537573 bbls and 1871021 bbls, respectively.Also, history match was performed to evaluate the production behaviour of the field.........

Keywords - Decline rate trend analysis,production forecast,history matching, reserves estimation.

@article{key:article,
author = {E. Annan Boah || A. Aidoo Borsah || E.T. Brantson},
title = {Decline Curve Analysis and Production Forecast Studies for Oil Well Performance Prediction: A Case Studyof Reservoir X},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {21-30},
month = {November}
}
Paper Title :: Springback Prediction Of Formed Tailor Welded Blanks
Author Name :: Peter Mulidrán || Emil Spišák || Janka Majerníková || Miroslav Tomáš || Ján Slota
Page Number :: 31-35
:: 10.9790/1813-0711013135   

Springback prediction is necessary when applying tailor welded blanks to automotive parts. The accuracy of springback prediction depends on the material model, which describes the deformation behavior of steel sheets. In each sheet metal forming process, the steels, in this case tailor welded blanks exhibit springback effect, which is governed by strain recovery of material after load removal. In this work, numerical simulation of a U-shape forming was performed on tailor welded steel strips. Two steels with different strengths were taken into account. High strength steels exhibit more distinct springback effect than steels used for deep drawing. This is mainly due to their higher values of Yield strength. Springback is related to many parameters like forming conditions, tool geometry and material properties such as sheet thickness, yield stress, work hardening, strain rate sensitivity and elasticity modulus.........

Keywords - Tailor welded blank, springback prediction, sheet metal forming, numerical simulation.

@article{key:article,
author = {Peter Mulidrán || Emil Spišák || Janka Majerníková || Miroslav Tomáš || Ján Slota},
title = {Springback Prediction Of Formed Tailor Welded Blanks},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {31-35},
month = {November}
}
Paper Title :: Optimizing The Production Of Benzene, Toluene And Xylene (Btx) From Nigerian Treated Heavy Naphthene Samples
Author Name :: I. L. Egun || I. J. Otaraku
Page Number :: 36-41
:: 10.9790/1813-0711013641   

This work investigated the effect of temperature variation on the catalytic reforming process as it relates to the yields of Benzene Toluene Xylene (BTX). There is need to increase the level of Benzene, Toluene and Xylene (BTX) yield produced in the refinery and also made available for other industrial applications. The BTX are obtained froma continuous catalytic reforming process of treated heavy Naphtha samples obtained from Nigerian crude(Qua Iboe and Forcados) which are readily available in large quantities.The catalytic reforming process was simulated using Aspen Hysyswhile varying the temperatureof thereactors between 430 – 520oC while the outlet concentrations of BTX (Vol.%) produced were measured. An increase in temperature led to an increase in the concentration of BTX produced...........

Keywords - Benzene,Continuous Catalytic Reforming,Forcados Blend, Qua Iboe, Temperature, Toluene, Xylene.

@article{key:article,
author = {I. L. Egun || I. J. Otaraku},
title = {Optimizing The Production Of Benzene, Toluene And Xylene (Btx) From Nigerian Treated Heavy Naphthene Samples},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {36-41},
month = {November}
}
Paper Title :: Photocatalytic Degradation and Kinetics of Malachite Green Using UV-TiO2 System
Author Name :: Ekwere, I. O. || Horsfall, M. || Otaigbe, J. O. E.
Page Number :: 42-51
:: 10.9790/1813-0711014251   

Untreated effluents may also contain dyes, especially in discharges from textile and fabric industries. Synthetic dyes have an adverse effect on all forms of life when discharged directly into the environment. This study investigates the photodegradation of Malachite Green (MG), a triaryl methane dye and the influence of initial dye concentration, pH, catalyst dose, reaction time on the overall photodegradation process. Photoreactor technique utilized was the slurry method; the photoreactor was equipped with a 15 W UV light and the photocatalyst used was nano titanium dioxide (80% anatase and 20% rutile). The results obtained showed that variation in the physical parameters influenced the efficiency of photodegradation. Kinetic study indicated that MG photodegradation follow the pseudo-first-order kinetics; 10 ppm MG gave the highest-first-order rate constant, followed by 30 ppm MG while 50 ppm MG gave the least rate constant; implying that better degradation was obtained at low MG concentration. Impact of Cu2+ ions on MG degradation was also investigated and results indicated an inhibitory effect.

Keywords - Photodegradation, synthetic dye, malachite Green, titanium dioxide, kinetics.

@article{key:article,
author = {Ekwere, I. O. || Horsfall, M. || Otaigbe, J. O. E.},
title = {Photocatalytic Degradation And Kinetics Of Malachite Green Using Uv-Tio2 System},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {42-51},
month = {November}
}
Paper Title :: On Covariance Of The Exponential Fractional Brownian Motion Of The Nigerian All-Share Index (1990-2007)
Author Name :: Maurice Nnamdi Annorzie
Page Number :: 52-59
:: 10.9790/1813-0711015259   

The stochastic dynamics and behaviour of the Nigerian Stock Market (NSM) as a whole are characterised by the daily movements of the Nigerian All Share Index (NASI). By using the Rescaled Range Statistics (R\S) to classify the time series, the Hurst parameter, H, was obtained in order to characterise the NSM in the form of an exponential fractional Brownian motion (fBm). The covariance, ( , ) H R t s , of the exponential fBm of the NASI was obtained in an unbiased long range dependence (LRD) phenomenon with H > 0.5.

Keywords - Nigerian All-Share Index, Hurst Parameter, Covariance, Exponential Fractional Brownian motion, Long Range Dependence.

@article{key:article,
author = {Maurice Nnamdi Annorzie},
title = {On Covariance Of The Exponential Fractional Brownian Motion Of The Nigerian All-Share Index (1990-2007)},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {52-59},
month = {November}
}
Paper Title :: The Effects Of Flood In Relation To Geotechnical Properties Of The Soil And Human Activities (Case Study Of Lokoja River Bank, North Central Nigeria)
Author Name :: Onsachi J, M || H. M Yakubu || Shaibu M. M
Page Number :: 60-71
:: 10.9790/1813-0711016071   

The study area, Lokoja river bank has been under the effect of flood for some time now, to study the effect of the floods on man and the environment, soil samples were collected along the river bank for analysis. 10 soil samples were collected from 10 locations for analysis at the Civil Engineering Department of Kogi State Polytechnic, Itakpe Campus. The Engineering properties of soil analyzed for are moisture content, particle size Distribution, compaction, specific gravity, consistency limit of the soil such as plasticity, liquid and plastic index. The result shows that the soil grain sizes ranges from medium-coarse grain (0.2 to 2mm) on sieve no 200. Samples at location 6 and 9 which is mainly medium grain sand have liquid limit (LL) of 19.3% and 23.0% which are good for construction, while sands obtained at other location have LL that ranges from 24. 0% to 44.0% which are not suitable for construction

Keywords - Flood, Environment, Engineering Properties, Soil

@article{key:article,
author = {Onsachi J, M || H. M Yakubu || Shaibu M. M},
title = {The Effects Of Flood In Relation To Geotechnical Properties Of The Soil And Human Activities (Case Study Of Lokoja River Bank, North Central Nigeria)},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {60-71},
month = {November}
}
Paper Title :: Multi-Objective Emission Constrained Economic Power Dispatch Using Novel Bat Algorithm
Author Name :: Hardiansyah || Mustar || Mulyono || Ade Kurniawan
Page Number :: 72-79
:: 10.9790/1813-0711017279   

This paper proposes a new meta-heuristic search algorithm, called Novel Bat Algorithm (NBA). The proposed algorithm combines the bats' habitat selection and their self-adaptive compensation for Doppler effects in echoes into the basic bat algorithm (BA). The selection of bats' habitat is modeled as the selection between their quantum behaviors and mechanical behaviors. The new algorithm is implemented to solve Environmental/Economic power Dispatch (EED) problem in power systems considering the power limits, valvepoint effects and transmission loss. The EED problem can be solved by summing up the minimization of generation cost and emission by considering weighting factor. The effectiveness of the proposed algorithm has been tested on 10-unit system and the results were compared with other methods reported in recent literature.

Keywords - Novel bat algorithm, economic dispatch, emission dispatch, environmental economic dispatch, valve-point effects.

@article{key:article,
author = {Hardiansyah || Mustar || Mulyono || Ade Kurniawan},
title = {Multi-Objective Emission Constrained Economic Power Dispatch Using Novel Bat Algorithm},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {72-79},
month = {November}
}
Paper Title :: The Effect of the Geometric Layout of Mobile-phone Keypads on Thumb-pressing Movement Time
Author Name :: Chin-Lung Chen || Chen-Hao Chang
Page Number :: 80-87
:: 10.9790/1813-0711018087   

In this study, we investigate the effect of geometric layout features of mobile-phone keypads, such as the column-row location, the key width, the key-center distance, and so on, on key-pressing time when a mobile phone is held in one hand and the thumb is used to press the keys. During this study, six participants in the experiments used their dominant right hand to operate keys of three different widths, viz., 2, 6, and 12 mm. In the keypads, as in the standard mobile-phone-keypad layout, there are three vertical columns and four horizontal rows in the keypad; the distances from the center of one key to the next in the vertical/column direction are 12, 24, and 36 mm, while in the horizontal/row direction, they are 15 and 30 mm. The key-pressing performance was measured by the key-pressing movement time.

Keywords - Mobile phone, keypad, Fitts' Law.

@article{key:article,
author = {Chin-Lung Chen || Chen-Hao Chang},
title = {The Effect of the Geometric Layout of Mobile-phone Keypads on Thumb-pressing Movement Time},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {80-87},
month = {November}
}

Series -2 [November]

Paper Title :: Effect Of Extraction Techniques On Antioxidant Activity, DNA Protection Potential And Antimicrobial Properties of N. sativa (Kalonji) seed extract
Author Name :: aqeela A. S. Qureshi || gayatri Barabde
Page Number :: 01-05
:: 10.9790/1813-0711020105   

In the present study, the extracts of Nigella sativa seeds were prepared by Soxhalate, Hot and Cold extraction methods using water and methanol as solvent. The free radical scavenging activity of all extracts were investigated by DPPH (2,2-diphenyl-1-picrylhydrazyl). The super coiled pBR322 plasmid was used to study the protection of DNA against H2O2 - induced oxidative damage. Antimicrobial activity of each extract was determined by Well Diffusion method. The results of DPPH and DNA damage assay revealed that methanol is better solvent than water and the Soxhalate method and Hot extraction methods are effective techniques to get antioxidant rich extract. Methanolic extract prepared by Soxhalate method showed activity against E. coli. The extract obtained by cold extraction technique showed positive antibacterial activity and least antioxidant activity.

Keywords - Antimicrobial activity, Antioxidants, DNA Damage , DPPH

@article{key:article,
author = {aqeela A. S. Qureshi || gayatri Barabde},
title = {Effect Of Extraction Techniques On Antioxidant Activity, DNA Protection Potential And Antimicrobial Properties of N. sativa (Kalonji) seed extract},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {01-05},
month = {November}
}
Paper Title :: Equipment Testing Underloca Conditions
Author Name :: Martin Brezina || Roman Mohyla
Page Number :: 06-09
:: 10.9790/1813-0711020609   

Safety is the highest priority of nuclear power plant operation. Nuclear power plants are designed with the safety in mind, while taking into account the anticipated operational occurrences and accidents. Despite the low probability of these events occurring, it is important to have the safety systems, strategies, trained operators and durable equipment in place. The safety systems and equipment have to stay functional during normal operation, but also under harsh conditions, that may occur in case of an accident. Equipment that is essential for safety systems and may be subjected to harsh conditions have to be tested and subsequently qualified to ensure their long-time durability. The process of testing involves subjecting the equipment to harsh conditions, comparable to a real accident. The purpose of LOCA Laboratory is simulation of harsh conditions of Loss of Coolant Accident. The laboratoryis used in development process of new equipment for current and future generations of Nuclear Power Plants.

Keywords - ...........

@article{key:article,
author = {Martin Brezina || Roman Mohyla},
title = {Equipment Testing Underloca Conditions},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {06-09},
month = {November}
}
Paper Title :: Risk Management IN Infrastructure Projects IN India
Author Name :: Gulam Mohi Ud Din Rather
Page Number :: 10-14
:: 10.9790/1813-0711021014   

Managing risks in infrastructure construction projects has been recognized as a very important management process in order to achieve the project objectives in terms of time, cost, quality and scope. This paper aims to identify and analysis of risks associated with the infrastructure projects. Based on a comprehensive assessment of conditions of contracts, this paper identifies risks and classifies them into eight types. It is observed by qualitative risk analysis, opposition from social bodies, changes in design and suspension of work are recognized to influence the project objectives maximally.This study has been found that few suggestions to mitigate construction project risks. The contract documents are used as a tool to manage risk and client, contractors and investors need to establish risk management policy throughout the project life. It is concluded that clients, designers, contractor and government bodies must work cooperatively from the feasibility phase onward to address potential risks in time.

Keywords - Construction projects, Contract, Qualitative risk analysis, Risks, Risk management.

@article{key:article,
author = {Gulam Mohi Ud Din Rather},
title = {Risk Management IN Infrastructure Projects IN India},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {10-14},
month = {November}
}
Paper Title :: Analysis of Humidification Dehumidification Desalination System
Author Name :: Abdulkarim Mayere
Page Number :: 15-20
:: 10.9790/1813-0711021520   

A unique and simple solar desalination system has been developed using humidification and dehumidification process. The system consists of humidification and dehumidification chamber. The key point is the psychrometric energy re-use, most of the energy required for the desalination process is recovered from the dehumidification chamber. A psychrometric analysis of the system is presented. Further analysis was conducted using experimental data to optimise the performance of the system. The system produced 18kg/h of fresh water using 3kW energy input. The effect of operating conditions which include flow rates and temperatures of feed water, air and cooling water are also presented.

Keywords - psychrometric, humidification, dehumidification, desalination.

@article{key:article,
author = {Abdulkarim Mayere},
title = {Analysis of Humidification Dehumidification Desalination System},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {15-20},
month = {November}
}
Paper Title :: Bioethanol And Sugar Yields Of Sweet Sorghum
Author Name :: Cengiz Erdurmus || Celal Yucel || Orçun Cınar || Arzu Bayır Yegin || Mehmet Oten
Page Number :: 21-26
:: 10.9790/1813-0711022126   

This study was conducted at Adana and Antalya provinces which are in the Mediterranean coastal zone of Turkey in 2016. The study was done with 9 sweet sorghum genotypes and 4 sorghum variety in the randomized blocks design of experiment as 4 replicates. As a result of the analyses in Adana location, the juice yield was between 8728 and 35143 Lha-1, Brix value was between 13.25 and 17.38%, total sugar content was between 1245 and 5909 kg ha-1, ethanol yield was between 738 and 3146 L ha-1, sucrose content was between 8.02 and 13.89%, glycose content was between 1.73 and 2.69%, fructose content was between 1.22 and 2.78%. As a result of the analyses in Antalya location, the juice yield was between 5353 and 37018 L ha-1, Brix value was between 11.08 and 17.73%, total sugar content was between 612 and 6381 kg ha-1, ethanol................

Keywords - Bioethanol, brix, sorghum, sugar.

@article{key:article,
author = {Cengiz Erdurmus || Celal Yucel || Orçun Cınar || Arzu Bayır Yegin || Mehmet Oten},
title = {Bioethanol And Sugar Yields Of Sweet Sorghum},
journal = {The International Journal of Engineering and Science},
year = {2018},
volume = {07},
number = {11},
pages = {21-26},
month = {November}
}