Correction of Friction Resistance Coefficient Based on Filled Function Method
Lintao Guo
Sch J Eng Tech | 609-612
DOI : 10.36347/sjet
Abstract
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The changed friction resistance coefficient of the pipeline after the oilfield water injection pipe network
system is used for a long term cannot reflect the actual conditions of the pipeline accurately. As the main parameter in the
water injection system, the friction resistance coefficient of the pipeline concerns to the accuracy of the simulating
calculation of water injection system and the efficiency of operation optimization.
Scrambled Audio Frequency Signal Transmission in a 3-slot STBC Scheme Based SC-FDMA Wireless Communication System
Joarder Jafor Sadique, Md. Ferdous Rahman, Shaikh Enayet Ullah
Sch J Eng Tech | 498-505
DOI : 10.36347/sjet
Abstract
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Space time block coding (STBC), an effective and efficient transmit diversity scheme implemented Multiinput multi-output (MIMO) wireless communication systems have well been accepted as robust and efficient to combat
detrimental effects of wireless fading channels. In comparison with STBC, a 3- slot STBC scheme (Orthogonal STBC)
shows superior performance with achievement of rate-one full-diversity and reduced decoding complexity. In this paper,
an effort has been made to study the performance of Orthogonal STBC based Single Carrier Frequency Division Multiple
Access (SC-FDMA) based wireless communication system on scrambled audio signal transmission. The SC-FDMA
system incorporates two channel coding (CRC and ½-rated Convolutional), two linear channel equalization Successive
Interference Cancellation (SIC) based Minimum Mean Square Error (MMSE-SIC) and Zero- Forcing (ZF-SIC) under
QPSK, DQPSK and QAM digital modulations schemes. It is noticeable from simulation results that the system
outperforms in retrieving transmitted audio signal under CRC, ZF-SIC and QAM schemes
Environmental Monitoring and Greenhouse Control by Distributed Wireless Sensor Network
S. R. Boselin Prabhu, S. Sophia, P. Balamurugan
Sch J Eng Tech | 511-516
DOI : 10.36347/sjet
Abstract
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A sensor is a miniature component which gauge physical parameters from the environment. Sensors measure
the physical parameters and transmits them either by wired or wireless means. In wireless medium the sensor and its
allied components are called as node. A wireless sensor node is self-assured by a processor, local memory, sensors, radio,
battery and a base station accountable for receiving and processing data collected by the nodes. They carry out
cooperative activities due to limited resources and nowadays, the applications of these networks are copious, varied and
the applications in agriculture are still budding. One interesting purpose is in environmental monitoring and greenhouse
control, where the crop conditions such as weather and soil do not depend on natural agents. To control and observe the
environmental factors, sensors and actuators are necessary. Under these conditions, these devices must be used to make a
distributed measure, scattering sensors all over the greenhouse using distributed clustering mechanism. This paper
reveals an initiative of environmental monitoring and greenhouse control using a sensor network. The hardware
realization shows periodic monitoring and control of greenhouse gases in an enhanced manner.
Effects of Waste Glass Powder as Pozzolanic Material in Saw Dust Cement Brick
Omoniyi, T.E, Akinyemi B.A, Fowowe A.O
Sch J Eng Tech | 517--522
DOI : 10.36347/sjet
Abstract
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This work examines the possibility of using Waste Glass Powder (WGP) as a partial replacement of cement in
saw dust composite brick to assess its pozzolanic activity and its effect on the properties of the composite. WGP was
used to partially replace cement at 0%, 5%, 10%, 15%, 20%, 25%, and 30% in the production of test samples of
100x100x100mm at binder sand mixing ratio of 1:6. After casting the cubes, they were tested for compressive strength,
water absorption, capillary water absorption and volume porosity. The results indicated that WGP can be used as cement
replacement material up to 30% at particle size less than 100μm to prevent alkali silica reaction and this can be utilized in
the manufacture of non-load bearing sandcrete block without any unfavourable effect. The study further revealed that
waste glass, if ground finer than 100μm shows a pozzolanic behaviour because it reacts with lime at early stage of
hydration forming extra CSH gel thereby forming denser cement matrix. The early consumption of alkalis by glass
particles mitigate alkali-silica reaction by increasing durability of composite brick which is manifested in the result of
volume porosity, water absorption, capillary absorption as well as in the results of sample densities.
Determination of Heavy Metal Levels in Eutropius niloticus and Citharinus citharus from Polaku River Near The Liquefied Natural Gas Plant in Bayelsa State
Ere, D, Fenesai S, Eboh, A.S
Sch J Eng Tech | 523-526
DOI : 10.36347/sjet
Abstract
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Heavy metal effluents from industries have continued to be a major source of concern due to the effect on the
environment and the living organisms around the vicinity. Heavy metal concentrations were determined in fish parts
(gills, tissues, head and bones) of Eutropius niloticus and Citharinus citharus from Polaku River near the Liquefied
Natural Gas (LNG) plant in Bayelsa State using atomic absorption spectrophotometer. The results obtained indicated that
the heavy metal concentrations in Eutropius niloticus follow the trend: bones>head > gills > tissue, while that of the
heavy metal concentrations in Citharinus citharus is head > bones > tissue > gills. The trend of heavy metal
concentrations can be represented as: Pb>Ni>Cd for Eutropius niloticus, while that of Citharinus citharus was
Pb>Cd>Ni. Citharinus citharus showed bioaccumulation factors of 3.91, 1.35 and 0.83 for Cd, Ni and Pb respectively.
Eutropius niloticus showed 3.43, 2.96 and 3.20 for Pb, Ni and Cd respectively. The values of concentrations of these
metals in parts per million (ppm) were below the FAO/WHO recommended maximum limits in the fish samples (0.5
ppm for lead (Pb) and cadmium (Cd)). This suggests that the heavy metal concentrations may not be up to the hazardous
limit in aquatic habitat and therefore maybe safe for consumers to eat from the stream
The Research on High Concentration Polymer Flooding Experiment in Small Well Spacing after Polymer Flooding Rising to Economy Limit Water Cut
Yazhou ZHOU, Daiyin YIN, Rui CAO
Sch J Eng Tech | 527-530
DOI : 10.36347/sjet
Abstract
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After polymer flooding, the difficulty of exploiting the potential for residual oil has increased further.
Although high concentration polymer flooding can improve recovery further, the field testing shows that the injection
and production is hard after the injection of high concentration polymer, so it is difficult to drive effectively, which limits
the development of the high concentration polymer flooding. For the exacerbation of production decline after polymer
flooding in the S pilot site PI1-2 layer of Daqing oilfield, the combination of high concentration polymer flooding and
pattern infilling was presented, the laboratory experiments and numerical simulation was proceeded to study injection
parameter of high concentration polymer flooding experiment in small well spacing. Research showed that injection of
polymer with molecular weights of 25 millions and concentrations ranging from 2500 mg/L to 3000 mg/L were better in
this block. The water cut rising to economy limit water cut of 98% after polymer flooding, and then injecting 0.5PV with
concentration of 2500 mg/L polymer, the development effect was best. It could enhance oil recovery by 8.1% on basis of
polymer flooding. Through optimizing the well pattern, the 106m five-spot areal well pattern was confirmed as infilled
well pattern of high concentration polymer flooding.
On Special Diophantine Triples
M. A. Gopalan, S. Vidhyalakshmi, N. Thiruniraiselvi
Sch J Eng Tech | 533-535
DOI : 10.36347/sjet
Abstract
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This paper concerns with the study of constructing a special Diophantine triples (a,b,p) such that the product
of any two elements of the set added with their sum and increased by a polynomial with integer coefficients is a Perfect
square.
Failure early warning model for Electrical Submersible Pump based on regression analysis
Guangling Fan, Chunsheng Li
Sch J Eng Tech | 536-541
DOI : 10.36347/sjet
Abstract
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Take 120 the Electrical Submersible Pump (ESP)well as the object of study, has constructed based on 6
commonly used target return early warning models, then to dives the Electrical Submersible Pump breakdown well to
carry on the forecast analysis.The findings indicated the model has the good forecast effect, forecast the rate of accuracy
achieves 92.5%, may carry on the breakdown early warning well for the oil field enterprise interior, and provides the
daily management and the policy-making basis for the oil field enterprise system.
Pilling Design in the Continental Shelf of Suakin, Red Sea, Sudan
Al-Imam, O. A. O., Kheiralla, K. M., Elzien, S. M, Mohammed A. A
Sch J Eng Tech | 551-556
DOI : 10.36347/sjet
Abstract
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The continental shelf of Suakin characterized by high accumulation of sediment due to the high ratio of
sedimentation of these sediments are alluvial, sand, silt muddy silty stone were driven by drainage system pattern in
surrounding areas. The coral reef limestone was highly weathered buried beneath the alluvial deposits. The overall
objective of this study is to Pilling foundation design in the near shore zone through mixed marine deposits for gas/oil
terminal construction. In this study Full-Scale Pile-Test is the best applicable method for taking site specific parameters
into consideration. The adhesion value was neglected because it is very small in marine environment comparing with pile
capacity and effective stress and surrounding soil condition. The settlement obtained to laboratory tests and the
consolidation index was used for predication which is between 3.0 -11.5cm.
The Research of Well Pattern in Horizontal wells and Vertical Wells Based on Numerical Simulation
Zhao YANG, Han GAO
Sch J Eng Tech | 557-560
DOI : 10.36347/sjet
Abstract
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Based on detailed geological modeling of block M and the result of Numerical Simulation, the paper
optimized the best well pattern in twenty-two well patterns between 5-spot well Pattern、Invert 7-spot well Pattern and
Invert 9-spot well Pattern. The results show that: based on the principle of optimization well pattern, the
WP1、WP7、WP15 are better. Considering the Production rate and time, Invert 9-spot well Pattern has a higher
Production rate; but 5-spot well Pattern can enhanced energy supplement to improve the oil recovery. Considering the
formation pressure and oil recovery, 5-spot well Pattern is the best well pattern in all. Reasonable Well Pattern can help
improve oil recovery and keep formation pressure, which has great influence on development effect. In the process of
developing low permeability reservoir, vertical wells combines with Horizontal Wells are widely used. Based on detailed
geological modeling of block M and the result of Numerical Simulation, the paper optimized the best well pattern in
twenty-two well patterns between 5-spot well Pattern、Invert 7-spot well Pattern and Invert 9-spot well Pattern. And
choose the best well pattern, which will have leading guidance on developing M block.
Hybrid Modeling of the Urban Traffic Flow
Doudou GAYE, Roger Marcelin FAYE, Benjamin MAMPASSI
Sch J Eng Tech | 566-576
DOI : 10.36347/sjet
Abstract
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Nowadays, the development of tools for modeling and simulating road traffic flow becomes more and more a
necessity. This is reflected by the development of many road traffic flow models that can reproduce some traffic
phenomena. The objective of this paper is to present a hybrid model based on two models developed independently. The
hybrid scheme is based on the coupling scheme developed by Bourrel. Coupled models are the macroscopic LWR model
(based on its resolution by GODUNOV’s method) and a microscopic car following model presented in this paper. The
proposed model is validated by simulation.
Leveraging of Agricultural Tailings and Industrial Wastes Together in Black Ink Preparation
Mohammed Nsaif Abbas
Sch J Eng Tech | 577-585
DOI : 10.36347/sjet
Abstract
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The textile industries in their production processes and biological laboratories in their research works throw
quite a few quantities of various types of dyes and stains to the river’s water and sewerage. The problem is going to get
worse if these wastewater from textile factories and biological laboratories poses without any treatment. This paper deals
with examine the treating ability of polluted water with nine kinds of textile dyes and biological stainswhich were Congo
red, direct black, direct brown, Indigo Carmine, haematoxylin, eosin, brilliant green, crystal violent and methylene blue
using potato peels as low cost material with two methods, the first one is enzymatically method via extraction of
polyphenol oxidase (PPO) enzyme from fresh potato peels and treating water polluted of high dyes concentrations with
loaded PPO on zeolite prepared from rice husk and the other method is physically method through using potato peels
residue from enzyme extraction process treating water polluted of low dyes concentrations by adsorption technique. The
results show high ability of two methods (enzymatically and physically) to remove dyes from polluted water for both
high and low concentrations.
A Review on the Non-Monotone Trust Region Methods
Yuanyuan Wu, Qinghua Zhou
Sch J Eng Tech | 586-590
DOI : 10.36347/sjet
Abstract
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Recently, non-monotone technique attracts the attention of many scholars and there are various articles about
this subject. The non-monotone line search technique performs well especially in the case of the bottom of a curved
narrow valley, which is a common occurrence in nonlinear problems. The purpose of this paper is to discuss the main
developments of non-monotone techniques used in trust region algorithms for unconstrained optimization
An Efficient Modified Derivative-Free Method on Bound Constrained Optimization
Xiaoli Zhang, Qinghua Zhou
Sch J Eng Tech | 591-596
DOI : 10.36347/sjet
Abstract
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This paper introduces an efficient modified derivative-free method for bound constrained optimization
problems. It is based on the coordinate search method. During the running of the algorithm, it incorporates the
progressive obtained local information into the current iteration. Actually, after we find two different suitable descent
directions, we introduce the composite expansion step. By doing these, a new point is produced through some kind of
line search techniques. Then we test the efficiency of our new method on the benchmarking. The computational results
shows the efficiency of the modified algorithm.
Providing Water Irrigation Source in Polluted Watershed through Riverbank Filtration (RBF) (Cihideung River, Cisadane Watershed)
Diana Rahayu, RohSantoso Budi Waspodo, M. Yanuar J. Purwanto
Sch J Eng Tech | 597-603
DOI : 10.36347/sjet
Abstract
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Land use change in upstream from forests into farms and settlements, as well as a wide range of industries
throughout the Cihideung River of Cisadane Watershed ultimately need got great attention from various parties. The
river is thought to have been subjected to contamination as a result the inclusion of various types waste from variety
activities in all watersheds. The RBF (Riverbank Filter) is the process where surface water undergoes infiltration to sub
surface flow and then extracted from the well. The RBF is usually takes the location on the banks of the River
(riverbank). Wells made in the land of the hydraulics in aluvial soil will be connected on the river. This allows the
hidraulic gradient so that surface water is forced to flow through the river bed and banks of the river. By this process of
RBF concentration of physics contaminant, chemistry and biology which are among surface water and subsurface water
can be reduced. The aim of this research is to study the characteristics of RBF, knowing the characteristic of the flow of
RBF by pumping test, and get information data of the quality of water through RBF (River Bank filtration) in the
riverbank Cisadane.
A Video Compression Technique Based On Active Learning Approach
Shireen Fathima, Mohammed Azharuddin Ahmed
Sch J Eng Tech | 613-620
DOI : 10.36347/sjet
Abstract
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Many Video compression algorithms manipulate video frames to dramatically reduce the storage requirements
and bandwidth required for transmission while maximizing perceived video quality. Typical video compression methods
first transform the video frames from its spatial domain representation to frequency domain representation using some
transform technique such as Discrete Cosine Transform vector quantization, fractal compression, and Discrete Wavelet
Transform and then code the transformed values. Recently, instead of performing a frequency transformation, machine
learning based approach has been proposed which has two fundamental steps: selecting the most representative pixels
and colorization. Our proposed method converts the color video frames to gray scale frames and the color information for
only a few representative pixels is stored. At the decoder side is all the color values for the gray scale pixels across
frames is predicted. Selecting the most representative pixels is essentially an active learning problem, while colorization
is a semi-supervised learning problem. In this paper, we propose a novel active learning method for automatically
extracting the RP is proposed for video compression. In this paper the active learning problem is formulated into an RP
minimization problem resulting in the optimal RP set in the sense that it minimizes the error between the original and the
reconstructed color frame.
Maintenance of an Air Compressor Used in Quarries
Ogundele, O. J, Osiyoku, D. A, Braimoh, J, Yusuf, I
Sch J Eng Tech | 621-627
DOI : 10.36347/sjet
Abstract
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The research work investigates the maintenance of an air compressor used in quarries. The objectives of the
research were achieved through the selection of a compressor. Reciprocating compressor was selected maintained as it
will give the required volume of air at a very high pressure. It has capacity of 1200 m3/hr which makes it to work with
any types of pneumatic drilling machine at a very high pressure. For every 3000 hours and 6000 hours, the preventive
maintenance is required.
Defective Key Detection In Keyboard Using Image Processing Techniques
Shafali Goyal, Reecha Sharma
Sch J Eng Tech | 628-631
DOI : 10.36347/sjet
Abstract
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There are many limitations related to testing of manufactured item. Solution of these limitations is costly due
to the human evaluation procedure, and efficiency is not so promising. Thus, automation of the process has resolved
residual issues. With the similar theme, we have proposed an algorithm for the detection of defective keys in keyboard
using image processing techniques. Many different types of keyboard’s images were acquired for algorithm validation.
Proposed algorithm was implemented in MATLAB software and tested on acquired images. Results have shown the
defective keys with annotations on the image.
On the Extremal Modified Wiener Index of Molecular Graphs
Yun Gao, Li Liang, Wei Gao
Sch J Eng Tech | 640-644
DOI : 10.36347/sjet
Abstract
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In this article, we consider the relationship between modified Wiener index and some special parameters of
molecular graph if parameter is a positive real number, and present the molecular graphs which minimize the modified
Wiener index among all molecular graphs with given chromatic number and clique number and the molecular graphs
which maximum the modified Wiener index among all molecular graphs with given clique number.
Integer Points on the Homogeneous Cone 7x2-2y2=10z2
Gopalan. M.A, Vidhyalakshmi . S, Geetha .T
Sch J Eng Tech | 645-649
DOI : 10.36347/sjet
Abstract
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The ternary quadratic 7x2 2y2 10z2 representing a homogeneous cone is analysed for its non-zero
distinct integral points. A few interesting properties among the solutions and polygonal numbers are presented. Given an
integrer solution, six different triples of integers generating infinitely many integer solutions are exhibited.
On The Generating Functions of the Powers of the K-Fibonacci Numbers
Sergio Falcon
Sch J Eng Tech | 669-675
DOI : 10.36347/sjet
Abstract
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In this paper we will introduce the k–Fibonacci factorial function
,
!
Fk n and the k–Fibonomial numbers. Then
we present the generating function of the powers ofthe k–Fibonacci numbers. Finally, we study the numerators and the
denominators of these functions. As consequence of this study, we find out several integer sequences some of the mare
listed in the Online Encyclopedia of Integer Sequences (OEIS) and we introduce some more
