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Syafii
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LPPM Universitas Andalas Gd. Rektorat Lt. 2, Kampus Limau Manis, Padang 25163, West Sumatra, Indonesia
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Andalasian International Journal of Applied Science, Engineering, and Technology
Published by Universitas Andalas
ISSN : -     EISSN : 27970442     DOI : https://doi.org/10.25077/aijaset
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering
The Andalasian International Journal of Applied Science, Engineering, and Technology (AIJASET) is an international journal dedicated to the improvement and dissemination of knowledge on applied science, engineering and technologies including energy, environment, industrial, agriculture, civil, transportation, Information and communication and other related sciences and engineering. AIJASET follows new trends and advanced technology for practical applications of appropriate technology.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 209 Documents
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Overview of Electrical Energy Planning in West Sumatera Aditio Pribadi, Rizki; Syafii, Syafii
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 1 No. 1 (2021): July 2021
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v1i1.7

Abstract

Electrical energy is one of the most important components in the development of an area. The development of sustainable development accompanied by rapid technological advances and an increase in living standards can cause the consumption of electrical energy to continue to increase, including in West Sumatra Province. To meet the needs of electrical energy in the future, it is necessary to build and develop the existing electrical system at PT. PLN (Persero) in order to serve the needs of electrical energy in the future. One of them is by predicting or predicting the demand for electrical energy in the next few years by utilizing historical data on the consumption of electrical energy in the past. In this study, the authors predict the electricity needs of West Sumatra Province from 2019 to 2028. The need for electrical energy tends to increase from year to year. In 2019 the need for electrical energy is 3,705 GWh, while in 2028 it is 6,980 GWh with an average growth in energy sales of 7.29 percent. The household sector has the highest demand for electrical energy in 2028, namely 3,769 GWh with an average percentage increase per year of 6.6 percent. Keywords: Power system planning, Electrical energy consumption, Generation planning and Electrification ratio.
The Technology Improvement of Physical Properties of KUB Chicken Meat Include Papaya Leaves (Carica papaya L) in Feed Nova, Tertia Delia; Sabrina, Sabrina
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 1 (2022): March 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i1.26

Abstract

This study aims to determine the Technology improvement of physical properties of KUB chicken meat including Papaya Leaves (Carica papaya L) in feed. This study used 100 KUB chickens placed in 20 boxes of cages, each box containing 5 KUB chickens, using papaya leaf flour at the age of 3 weeks. The method used in this experimental study was a completely randomized design (CRD) with 5 treatments and 4 replications consisting of treatment A (feed with 0% papaya leaf flour), treatment B (feed with 2.5% papaya leaf flour), treatment with C (feed with 5% papaya leaf powder), treatment D (feed with 7.5% papaya leaf powder) and treatment E (feed with 10% papaya leaf powder). The parameters observed were meat pH, cooking loss, meat tenderness and water holding capacity. The results showed that giving papaya leaf flour up to 10% had no significant effect (P>0.05) on meat pH and cooking loss, but had a very significant effect on (P<0.01) KUB chicken meat tenderness. The conclusion of this study is that giving 2.5% papaya leaf flour has an effect on the tenderness of KUB meat.
Spatial Distribution of Rice Planting Calendar in West Sumatra Province Based on MODIS Image Data Ekaputra, Eri Gas; Yanti, Delvi; Irsyad, Fadly; Setyanto, Eri
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 1 (2022): March 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i1.28

Abstract

Each region has its own cropping pattern due to its particular characteristics. Crop production may be increased by adjusting the timing of planting. Remote sensing technologies can be used to monitor regions where planting occurs simultaneously. The purpose of this study is to assess the degree of uniformity at the beginning of the paddy cultivation season in West Sumatra. In each growing season, there are two early cultivation seasons in the West Sumatra province. 19% of the region started cultivation in the first period of the first cultivation season (CS1), and 81% in the second period. 4.2% of the region started cultivation in the first period of the second cultivation season (CS2), while 95.8% started planting in the second period. 35% of the region started planting in the first period of the third cultivation season (CS3), while 65% started planting in the second period. The level of uniformity at the beginning of the second cultivation season was higher than at the beginning of the first cultivation season
Optimization Pressure of Water Distribution Network System of the Banjarsari Water Treatment Plant, PDAM Bojonegoro Utama, Teguh Taruna; Zumrotin, Amelia
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 1 (2022): March 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i1.31

Abstract

The distribution network of the Banjarsari water treatment plant uses a gravity system. The system serves the drinking water in Banjarsari Villages. This study aims to optimize the pressure of the water distribution network in the Banjarsari Villages. This system supplies water from the Banjarsari water treatment plant. The water distribution network uses the gravity method to deliver water to customers. The drinking water distribution network was obtained from PDAM Bojonegoro. Meanwhile, the elevation and node of pipe were obtained by using Google Earth. Before optimization, the water distribution network has negative pressure at 07.00 AM and 05.00 PM. The negative pressure zone is at the end of the distribution network. The negative pressure values obtained using EPANET is range from -0,67 meters to -6,34 meters. The water distribution network is optimized by replacing diameter pipe in some areas, the water pressure increases significantly and makes the water distribution has positive pressure values. The pressure values are range from 2,70 meters to 13,65 meters. Replacing diameters of pipe is a solution to remove negative pressure, so that water from the reservoir can deliver to the end of a pipe. The distribution network pipe diameter is chosen which is close to the calculated pipe diameter.
Analysis of The Effect of Bank Capacitor Placement as Voltage Drop Increase in Distribution Network Rofandy, Muhammad Yudha; Hasibuan, Arnawan; Rosdiana, Rosdiana
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 1 (2022): March 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i1.32

Abstract

The quality of electricity distribution in the distribution network is an important thing that must be considered. To maintain the quality of electrical energy, there are several parameters that must be considered in the distribution network, including voltage drop, power losses, power factor and other factors. One of the solutions used to improve the voltage drop and power factor is to install a capacitor bank in the distribution network. This paper will discuss the placement of capacitor banks using the fuzzy logic method with inputs in the form of voltage profiles, power losses and power flow calculations using ETAP 12.6.0 software. In the Rao feeder, the final voltage is 16.806 kV or has passed the standard set by PLN (-10% and +5%). The Rao feeder has a power loss of 0.242 MW and a power factor of 0.7815. Fuzzy logic method is used to determine the optimal location of capacitor placement. After the installation of the capacitor bank, the terminal voltage increases and the total power loss decreases, while the power factor increases. From the results obtained, PLN as a supplier of electrical energy can reduce power losses by placing and installing capacitor banks in the distribution network.
Effects of a Longitudinal Crack in Overhung Rotor Malta, Jhon; Bur, Mulyadi; Fadillah, Muhammad Rahmanda
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 1 (2022): March 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i1.33

Abstract

In this study, a longitudinal crack simulation will be carried out on the shaft using the MSC Nastran/Patran to identify the effect of variations in the depth and length of the crack on the shaft on the stress distribution along the shaft and to determine the dynamic behavior of the rotor shaft overhung system due to cracks. The simulation was carried out with two models, with and without a crack. The first crack position locates between the disk and the bearing, and the second is between the two supports. Based on the simulation test results, the natural frequencies tend to decrease with increasing variations in the depth and length of the crack, especially at first and second natural frequencies. The cracks between the disc and the bearing significantly reduce stiffness than the cracks between the two supports. Furthermore, in the stress analysis, the cracks increase the rotor's maximum stress, which occurs in the area of the ultimate bending moment.
The Changes of Peat Chemical Characteristics which is Converted from Oil Palm to Corn Plantation Areas In Kinali, West Pasaman Regency, West Sumatra Harianti, Mimien; Prasetyo, Teguh Budi; Junaidi, Junaidi; Naspendra, Zuldadan; Batara, Dewi Syaputri
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 2 (2022): July 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i2.34

Abstract

The decline in production prices and land ownership shifts have caused people to choose to convert oil palm plantations into corn plantations. Changes in land cover from plantation crops to annual crops is potentially to reduce the chemical properties of peat. This study aims to identify changes in the chemical properties of peat on land for conversion of oil palm to corn plantations. This research was carried out from May to September 2021. Observations and peat sampling were carried out using the Transect method, perpendicular from the drainage channel based on a distance of 2m, 200m, and 400m from the main canal in maize conversion age < 2 years, (3) maize planting aged conversion 2 years. For each land use, 3 sample points were taken with 2 replications at a depth of 0-20 cm and 20-40 cm. The chemical properties of peatlands that have been converted from oil palm plantations to corn plantations include pH 4.18-4.98, water content 163.76-495.81%, ash content 15.5-72.12%, C-Organic 16.18-49.02%, N-Total 1.25-6.92%, P-Total 5.56-255.87 ppm, P-Available 0.63-157.43 ppm, K-dd 0, 38-1.98 me/100g, Na-dd 3.97-13.84 me/100g, Ca-dd 12.26-23.12 me/100g, Mg-dd 14.66-50.84 me/100g , CEC 63.30-498.16 me/100g, total acidity 570-600 cmol/kg-1. After land conversion, the quality of peatlands increased, especially at the age of conversion <2 years and decreased with increasing age of land conversion.
Manufacturing Continuous Improvement of Busbar Product Using Six Sigma Approach At PT.XYZ Fithri, Prima; Nabila, Jihan; Triawan, Fandy; Armijal, Armijal
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 3 (2022): November 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i03.36

Abstract

PT. XYZ is a manufacturing company engaged in the production of cables and conductors such as busbars. Busbar is a copper bar used to distribute electric power. The problem that occurs at PT. X is that there are still reject products in the busbar production The reject criteria found are as follows: bent busbar, scratched visual, oxidized visual, cracked visual during bending test. This aims of this research are to reduce the total rejects in busbar products by proposing improvements to the busbar production process using the six-sigma method. The data used in this study consisted of primary data (results of discussions with production managers, quality control managers and engineering staff and research in field) and secondary data types and total rejects within 21 months. The results of this research found that at the define stage scratched busbar and bent busbar are the dominant type of busbar that will be improved in this research. At the measure stage, the company sigma value is 3.607. This result can be used to propose quality improvement for the busbar production process whisch is obtained so that the company can reduce the number of defective products and improve product quality.
Evaluation and Design Public Facilities for People with Disabilities in Al-Hakim Mosque, Indonesia Tri Putri, Nilda; Abrar, Rivandy; Fatrias, Dicky
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 2 (2022): July 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i2.37

Abstract

Public facilities can be accessed by everyone, whether they have physical limitations or not.The Al-Hakim Mosque in Padang City is one of the facilities that is a place of worship for Muslims as well as a tourist attraction in West Sumatra.The research was conducted by identifying the inhibiting factors for persons with disabilities when using these facilities, designing these facilities to be easy to use by persons with disabilities (especially wheelchair users), and making a budget plan for making these facilities. Identification of inhibiting factors is done by making checklist to see the various obstacles experienced by wheelchair users and selecting anthropometric variables needed in designing public facilities. The results of this study are in the form of public facility designs that can be used by wheelchair users, the percentage of the suitability of these public facilities after the design is carried out, and the costs required to build these facilities
The Study of Raw Water Turbidity Removal in Sedimentation Unit Continuous Discharges Flow (CDF) Method Using Plate Settlers Ridwan, Ridwan; Afrianita, Reri; Hadi, Refa Nabila
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 3 (2022): November 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i03.38

Abstract

The sedimentation unit using the continuous discharges flow (CDF) method can remove raw water turbidity of 91.09% with initial turbidity of 75.248 NTU. The performance of the sedimentation unit using the CDF method needs to be tested at high turbidity, which is more than 100 NTU. Sedimentation using the CDF method with the addition of plate settlers is an alternative that can be done by increasing the turbidity value. This study aims to determine the performance of the sedimentation unit using the CDF method with the addition of plate settlers in the removal of high turbidity. The study used a laboratory-scale reactor of 240 L/hour, with units consisting of plunge coagulation, baffle channel flocculation and a 5% CDF method sedimentation unit with plate settlers. The study used artificial raw water with variations in turbidity of 110.355 NTU, 132.035 NTU, and 153.338 NTU. The research shows that the efficiency of removal of turbidity on average for the variation of turbidity is 92.32%, 91.25%, and 89.87%, respectively. The correlation value and significance of Rank Spearmen from the variation of turbidity to reactor performance are -0.926 and 0.00, respectively. In other words, the more turbid the raw water, the lower the reactor performance

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