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ARPN Journal of Engineering and
Applied Sciences
April 2020 | Vol. 15 No. 8 |
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Title: |
Experimental silo controlled by
Programmable Logic Controller - PLC |
Author (s): |
Faiber Robayo Betancourt, Gilma Paola
Andrade Trujillo and Angelo A. Reyes Carvajal |
Abstract: |
This
work presents the design and implementation of an experimental silo
controlled by a PLC (Programmable Logic Controller). The main
contribution of this work is to provide a new tool in the control area
and industrial instrumentation applied to a silo. A variety of sensors,
motors, and electromechanical elements are implemented. The structure is
metallic and consists of a conveyor belt made of rollers through which a
grain container is moved. The PLC configuration and programming were
executed by the Connected Components Workbench (CCW) software and the
graphical interface was performed in LabVIEW programming. As a result,
an experimental tool for the industrial process automation practice
applied to silo was developed. |
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Title: |
Study about level of railway road damage
railways with sustainable PCI method |
Author (s): |
Syaiful Syaiful and Lian Lasmana |
Abstract: |
Assessment of road surface conditions is one step to determine the type
of revaluation program that needs to be done. The method used is Method
pavement condition index (PCI). This study aims to obtain the results of
pavement value evaluation and follow-up plan to be taken. The data used
are observation data on location, the sequence of data processing
starting from determining Damage Level, Hardening Condition
Conditioning, and Classification of Pavement Quality, PCI value index
consists of 0 to 100. Evaluation of road condition condition of Mayor HE
Sukma Rd with PCI method resulted in 64% PCI value included in good
category, but in samples there were 3.33% blow up damage, 13.33% corner
break, logitudinal, tranverse, and diagonal cracks 23,33%, durability
cracking 3,33%, patching large and utility cut 13,33%, scalling 3,33%,
spalling tranverse and longitudinal joint equal to 13,33%. The follow-up
plan that can be taken on the basis of the highest density of cracks is
logitudinal, tranverse, and diagonal with cracking improvements
exceeding 3 mm needs to be cleaned and filled with asphalt to prevent
water infiltration into cracked cracks, if the cracks exceed 5 mm return
the plate locally. |
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Title: |
Accelerated convergence of numerical
solution to square plate bending problem |
Author (s): |
Mikhail Ivanovich Popov, Aleksey
Vasilyevich Skrypnikov, Vyacheslav Gennadievich Kozlov, Dmitry
Gennadievich Kozlov, Petr Viktorovich Tikhomirov, Vadim Yurievich
Bukreev, Maksim Aleksandrovich Abasov and Victor Anatolyevich Khvostov |
Abstract: |
The
paper presents a numerical solution to the problem of bending a square
plate clamped along periphery by the classical finite difference method.
The obtained solution is improved using the Richardson extrapolation
method, which allowed to reduce the absolute error of the solution by 4
orders of magnitude. A step-by-step construction of an implicit finite
difference scheme of the second order of accuracy for an inhomogeneous
biharmonic equation under zero boundary conditions on the desired
function and its gradient is presented. The classical and modified
Richardson extrapolation methods are considered on the sequence of grid
functions. The extrapolated solutions are presented as a linear
combination of grid functions in common nodes with weight coefficients.
Computational experiments for the test function were carried out using
the Maple computer environment. Solutions of the problem for different
grid steps are obtained. The dependence of the calculation time error on
the number of significant digits is revealed. The optimal number of
significant digits is found. The rate of convergence of the classical
finite difference method is investigated. The analysis of convergence
acceleration using the classical and modified Richardson extrapolation
method is carried out. |
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Title: |
Use of probabilistic methods for design of
CLT panels |
Author (s): |
Pavel Dobeš and Antonín Lokaj |
Abstract: |
The
paper deals with the use of probabilistic methods for determination of
the stiffness and load-carrying capacity of CLT panels. CLT panels are
large-format building components composed of cross-oriented solid timber
layers. The panels were experimentally tested using a four-point bending
test, where a load-deformation curve was recorded. The results of the
experimental testing entered into the probabilistic calculation as
random variables and they were then compared with an analytical
calculation a values given in Eurocode 5. |
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Title: |
Pressure derivative analysis for radial or
linear geometries composite reservoirs |
Author (s): |
Freddy H. Escobar, Francisco José Amado
and Faiber Robayo |
Abstract: |
A new
methodology for pressure-transient well test interpretation in both
linear or radial geometry composite reservoirs is presented here. For
this, expressions of the unified behavior and trend correlations from
the maximum and minimum points of the pressure derivative curve observed
during the transition period between the two regions that compose the
reservoir are developed for the determination of diffusivity ratio and
mobility. The results obtained in both cases with the developed
equations and correlations provided excellent results which match very
closely the input ones, and, therefore; with a very low deviation error
as illustrated by the synthetic examples. |
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Title: |
Development of solar power plant for fish
cooling in the fisherman ship |
Author (s): |
Yulianus Songli, Kristiana Pasau, Agustina
Kassa and Corvis L. Rantererung |
Abstract: |
Indonesia as a maritime country that most of its territory is the sea
and is located right in the equatorial region with abundant potential of
solar energy and marine fish. So far, fishermen using fishing boats are
very wasteful because they use two engines, the boat engine and the
engine generating electricity on the ship. The operational costs of
fishermen going out to catch fish and transport fish are very high,
resulting in poor and marginal fishermen. This study aims to provide
solutions for fishermen to utilize solar energy as a source of
electrical energy for fish cooling and lighting on fishing boats at
night. |
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Title: |
Study of the reaction of polysorbate-20
with heteropolyacids of the Keggin structure by the photometric method |
Author (s): |
Mironyak M. O., Volnyanska O. V., Manzuk
M. V., Labyak O. V., Nikolenko M. V., Kovalenko V. L. and Kotok V. A. |
Abstract: |
In
this work, the effect of acidity of the working solution on the
properties of polyoxyethylene monosorbitan laurate was investigated by a
spectroscopic method. Since the substance under study does not absorb
light waves in the visible region of the spectrum, the study was
conducted in the ultraviolet region. The effect of solution pH on the
reaction of the interaction between polysorbate-20 and barium salt to
form a cationic particle of polysorbate-barium was also studied by
spectrophotometric method. The possibility of reaction between the
obtained cationic particle of polysorbate-barium and the anions of
12-molybdophosphate and 12-tungstenphosphate heteropoly acids was
investigated and the nature of the bond in the obtained compounds was
determined. The composition of the complexes and the ratio of the
components were determined by the saturation method at a wavelength of
265 nm. The results of these studies can be used in the development of a
new method for the determination of polysorbate-20 in industrial
products ionometric method using potentiometric sensors reversible to
polysorbate-20. |
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Title: |
Prediction of sitophilus oryzae gender
using Logistic Regression model |
Author (s): |
Tun Mohd. Firdaus Azis and Khairul Farihan
Kasim |
Abstract: |
Sitophilus oryzae gender been discriminated using rostrum size and
confirmation required the dissection of internal reproductive organ.
This dissection technique is destructive and difficult to perform. Thus,
the objective of this study is to enhance gender identification process
by developing the model using Logistic Regression. This model been
develop based on the numerical information of S. oryzae morphological
features per se. The results show that rostrum measurement (length and
width) was adequate to be used in developing a model for identification
and prediction of S. oryzae gender with 100% correct classification. |
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Title: |
Effect of carbon-nitrogen in the native
Beauveria Bassiana production by solid fermentation in Ecuador |
Author (s): |
Oderay Merino-Peñafiel, Jesús Chávez
Machado, Favian Bayas-Morejón, Angélica Tigre-León, Myriam Merino,
Moises Arreguín and Andrea Román |
Abstract: |
The
purpose of the work was to produce native Beauveria Bassiana conidia at
the laboratory level through Solid State Fermentation (SSF),
polypropylene sleeves were used as bioreactors. The pre-cooked and
sterilized substrates were: "recycled" rice and wheat, supplemented with
various carbon-nitrogen sources (C-N), ratio 10: 1. The experimental
design was a Categorical Multi-Factor, with 20 treatments and three
repetitions to determine the variable concentration of conidia/g of
bioproduct; the count of conidia was in Neubauer chamber. The mean
values of controls were 1.15 × 109 Conidia/g in rice and wheat 1.22 ×
109 Conidia/g with C-N supplements, the highest means of B. Bassiana in
rice was 1.89 × 109 Conidia/g (T7); in this same order in wheat 1.90 ×
109 Conidia/g (T17). The lowest means presented: T10 and T20 (between
1.05 - 1.06 × 109 Conidia / g), in rice and wheat with molasses-yeast,
concentration 2 (5.0-0.50 g), possibly due to an antagonistic effect
between Saccharomyces cerevisiae-entomopathogenic fungi (EPF) during its
cultivation. The ANOVA registered significant statistical differences
(*) at = p 0.05 in the factors C-N, and concentration. The Multiple
Range Contrast LSD-Fisher, determined that there were no (*) between any
pair of means at 95.0% confidence. It is concluded: the supplementation
of C-N on rice and wheat for the mass production of B. Bassiana,
influenced the yield of conidia/g of the bioproduct. |
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Title: |
Determination of ground water quality
index in coastal area of Mumbai |
Author (s): |
Jyoti J. Nimje and A. S. Wayal |
Abstract: |
Ground
water quality can be adversely affected or degraded as a result of human
activities that introduce contamination into the environment. In
industrial and coastal location, the saline water intrusion resulted in
contamination of the potable ground water aquifers. The influence of
environmental parameter on the water quality of ground in coastal region
which is crucial issues as water availability and its use for various
purposes. Assessment of Ground water quality status was done by using
water quality index method, which is an effective tool to assess spatial
and temporal changes in ground water quality. Various parameters were
selected as indicators of the groundwater quality which include pH,
Hardness, Chlorides, Sulphate Dissolved Solids, Calcium, Alkalinity,
Magnesium and Metals etc. to determine water quality index. The
monitoring of ground water quality was done on the basis of
experimentation by standard sampling methods, for different locations
for consecutive three years from 2016 to 2018. The present study intends
to calculate water quality index (WQI) of the coastal ground water. |
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Title: |
Investigation of local scouring and
sediment patterns around the solid and hollow pillar |
Author (s): |
Ishak M. Galib, Saparuddin, Herman Rudi
and Arafat Yassir |
Abstract: |
The
existence of a bridge pillar on a river body can cause changes in flow
characteristics such as flow patterns to change into the spiral flow or
greater turbulence, changes in water flow velocity cause changes in all
hydraulic systems so that the change in depth of local scours around the
pillars on a bridge. Local scouring occurs due to flow velocity greater
than the critical velocity of the sediment. The shape of the pillar is
very influential on the depth of scouring, scouring occurs when changes
in flow conditions are caused by an increase in the basic shear stress.
The purpose of this study is to determine the effect of pillar shape on
the scour depth, sediment scours pattern, and the most shallow scoured
pillar shape. The tool used is a flume with a length of 15 m, width 1 m
and height of water adjusted to the needs. The research method is by
testing the depth of scouring on pillars in the form of round and
triangular nose pillars, and hollow and triangular round nose pillars,
velocity used are fixed, with different water heights so that different
Froude and Reynolds numbers are obtained, the velocity is designed based
on the principle that local scouring occurs continuously and the
sediment transport process does not occur, the basic sediment material
used passes filter number no. 10 (2 mm) and retained no. 20 (0.85 mm).
Of the six types of pillars used the most shallow scour is a hollow
pillar with a hollow nose tilted inward the scouring value obtain of K1
= 0.6, in general, that hollow pillars are scoured smaller than intact
pillars, while the sedimentary pattern formed around the pillars is for
nasal scours triangular pillars are more centred around pillars, while
pillars are with a more spread round nose. |
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Title: |
A proposed modified text steganography
technique using UniSpaCh with XOR encryption and shift cipher |
Author (s): |
Raka Adinugraha, Tito Waluyo Purboyo and
Randy Erfa Saputra |
Abstract: |
Nowadays, security on communication was a necessity. However, sending an
encrypted message can draw a suspicion from unintended parties. So,
sometimes cryptography doesn’t guarantee a full security because it
could attract attempts to break and reveal the encrypted message.
Steganography was introduced as a method to secure a secret message by
hiding it inside an unsuspicious message. The message can be plain text
or other data that can be represented as streams of bits. Many of
steganography techniques are being proposed from time to time, means
steganography is a promising method to secure a communication line
beside cryptography. In this paper, an experiment is conducted by
comparing two text steganography techniques, which is UniSpaCh and a
steganography technique by altering the foreground color of an invisible
character. |
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