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Mahardika Darmawan Kusuma Wardana
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PELS (Procedia of Engineering and Life Science)
Published by Universitas Muhammadiyah Sidoarjo
ISSN : -     EISSN : 28072243     DOI : https://doi.org/10.21070/pels
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering
PELS (Procedia of Engineering and Life Science) is an international journal published by Faculty of Science and Technology Universitas Muhammadiyah Sidoarjo. The research article submitted to this online journal will be double blind peer-reviewed (Both reviewer and author remain anonymous to each other). The accepted research articles will be available online following the journal peer-reviewing process. Language used in this journal is Bahasa (Indonesia) or English. Aims and Scope of this journal is science and technology.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 662 Documents
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Microwave-Assisted Pyrolysis Process of Sengon Sawdust by Using Ni/Al2O3 Catalyst: Proses Pirolisis Berbantuan Gelombang Mikro Serbuk Gergaji Sengon Laut Dengan Katalis Ni/Al2O3 Wulandari, Lisa Ayu; Azis, Muhammad Mufti
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Microwave-assisted pyrolysis (MAP) process is one of the alternative biomass pyrolysis processes currently being developed. This process aims to increase the yield of bio-oil and reduce residues during the pyrolysis process. One of the challenges faced in this process is the low thermal conductivity of the biomass which will also affect the quality of the bio-oil produced. The addition of a catalyst is intended to increase the yield of bio-oil and the quality of bio-oil. In addition, this process is also carried out by adding an absorber to increase the thermal conductivity of the biomass. Ni/Al2O3 catalyst was synthesized by wet impregnation method with variations of 8%, 11% and 12.5% ​​nickel loading. Furthermore, the catalyst was mixed with sawdust of sengon (Paraserianthes falcataria) and coconut charcoal as absorber. The microwave is set at a maximum temperature of 500 °C with an operating time of 60 minutes. Pyrolysis results showed that the addition of catalyst and absorbent was able to increase bio-oil production, with the percentage of bio-oil being 25.2%, 27%, and 33% respectively compared to pyrolysis without catalyst which only reached 11%. GC-MS analysis of bio-oil showed various hydrocarbon components in each variation, with the main components being phenol and benzene.
Improving Working Method of Label Cutting Station in the Jago Jaya Shuttlecock Industry for Increases Productivity: Perbaikan Metode Kerja Stasiun Pemotongan Label di Industri Shuttlecock Jago Jaya untuk Meningkatkan Produktivitas Astuti, Rahmaniyah Dwi; Suhardi, Bambang; Iftadi, Irwan; Nadhira, Afra Galda; Syahliantina, Annisa
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1388

Abstract

The process of cutting labels at the Jago Jaya Industry Shuttlecock has not implemented efficient working methods, so production targets are not achieved. This study aims to improve the working method of the workstation through the implementation of a label cutting tool in the Jago Jaya industry. The method used to analyze hand movements uses the Right Hand and Left Hand Map. Improved operator hand movements to be more balanced so as to increase productivity at the label cutting workstation. The time required to cut 50 labels was reduced from 72 seconds to 46 seconds after the application of the cutting tool and the change in the placement of the equipment closer to the operator. After the implementation of the pacemaker, the ineffective movements of the left hand were eliminated, such as 8 times from 10 to 2 times and 4 times from 6 to 2 times. Meanwhile, on the right, campaigns were held 1 time, from 5 times to 4 times.
Analysis of the Use of Filter Screen Rubber Compound Straining process with Multivariate Regression Yuli Suwarno
Procedia of Engineering and Life Science Vol 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1389

Abstract

The rubber compound is processed with a strainer machine to filter out contaminants as a material for making rubber products. The process of filtering the rubber compound with an extrusion-based strainer machine is done with heat to soften and flow the material through the filter screen. This condition will increase the risk of the rubber compound dying (scorching) in the subsequent processing of the rubber compound. The multivariate linear regression model is a regression model with more than one correlated response variable and one or more predictor variables. The purpose of this study was to study the relationship between the use of the same filter screen for the straining process with a certain batch number of straining processes against temperature and time rubber compound scorching. The results showed that the use of filter scree in the straining process and its effect on the characteristics of the rubber compound can be modeled in a multivariate linear regression model following this model [Y ̂_(1) ) Y ̂_((2) ) ]= [78,590+ 3.125X 15.759-1.003X]. The eta square lambda value (η_Δ^2) of 0.925 indicates that the regression model can explain 92.5% of data Based on the multivariate linear regression model, it is possible to calculate the proper replacement period of the filter screen in the rubber compound straining process which increases the efficiency of the rubber compound processing and minimizes the possibility of the rubber compound dying in the process (scorching).
Comparison of Multiple Linear Regression and Holt-Winter Exponential Smoothing in the Gold Jewelry Pricing Prediction: Perbandingan Penerapan Regresi Linear Berganda Dan Holt-Winter Exponential Smoothing Pada Prediksi Harga Emas Perhiasan Majid, Wirawan Khairul; Dzikria, Intan
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1390

Abstract

One important factor in someone's decision to purchase gold jewelry is the price factor. However, the price of gold jewelry varies from store to store. Therefore, a gold jewelry price forecasting system is needed to assist customers in determining the right time to buy gold jewelry. This study aims to develop a gold jewelry prediction system by comparing two methods: multiple linear regression and Holt-Winter exponential smoothing. These two methods were chosen because the researcher wants to compare which method is more accurate in predicting the price of gold jewelry. The second reason is that both multiple linear regression and Holt-Winter exponential smoothing methods share similarities in using three variables. The three variables in multiple linear regression include period (X1), profit (X2), and price (Y), while the variables in the Holt-Winter exponential smoothing method include level, trend, and season.
Match Card Game For Education About Traditional Kingdom in Indonesia: Match Card Game untuk edukasi mengenai kerajaan Tradisional di Indonesia Abdillah, David Fahmi; K, Ilham Basri; lambang , Yanuangga Galahart; Khotiah, Titiek; Dijaya, Rohman
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1391

Abstract

Indonesia is one of the country that has an old history that can be tracked until 1000 years, even before Indonesia got invaded by Netherlands. Many kingdoms that rise and fall or replaced by another kingdom, and many rulers that have bloodline with another rulers in different kingdom. Each kingdom has different culture background that based on different religion, where we can see about their culture development from kingdoms from the past. Game education is one of the tools for learning that can be used for modern entertainment game that give education point or knowledge so the player can learn while playing the game. Match card game is a game where player match the image with the same image and finish it by matching all the cards with the same image. In this game, by borrowing match game mechanic, we modified it with player need to choose a Question Card and match it with the correct Answer Card. There is 3 stages in the game that separate it with Hindu’s kingdoms, buddha kingdoms and Muslim kingdoms in Indonesia. Player then will got a questioner about the topic in the game. The result we got that the players has improvement about the old kingdoms in Indonesia. And we got positive reaction about the game and they interested to play it again and gain a higher score than before.
Effect of Gelatin and Citric Acid Concentrations on the Production of Cherry Tomato Jelly Candy (Solanum lycopersicum var. cerasiforme): Effect of Gelatin and Citric Acid Concentrations on the Production of Cherry Tomato Jelly Candy (Solanum lycopersicum var. cerasiforme) Zahiroh, Alza Della; Azara, Rima
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1392

Abstract

This research to determine the effect of gelatin concentration and citric acid concentration on cherry tomato jelly candy products (Solanum Lycopersicum Var. Cerasiforme). The method used in this study was a randomized block design (RBD) using 2 factorials, namely gelatin and citric acid, with 9 treatments repeated 3 times to obtain 27 experimental units. Data analysis was carried out using ANOVA and follow-up tests were carried out with Honest Significant Difference (BNJ) at 5% level while the organoleptic test was analyzed using the Friedman test. The results of this study indicated that the addition of gelatin and citric acid had no significant effect on the reducing sugar of cherry tomato jelly candy, whereas the parameters of water content, ash content, vitamin C had a significant effect on the addition of gelatin and citric acid to cherry tomato jelly candy. The results of this study showed that the highest value for the reducing sugar parameter was 47.70%, the lowest value for ash content was 0.25%, the lowest value for water content was 17.14%, the highest value for vitamin C was 0.50%.
Characteristics of Mocaf (Modified Cassava Flour) From Cassava (Manihot utilissima): Study of Tape Yeast Concentration and Fermentation Time: Karakteristik Tepung Mocaf (Modified cassava flour) dari Singkong (Manihot Utilissisma): Kajian Konsentrasi Ragi Tape dan Lama Fermentasi Ningrum, Wiwin Ekawati; Saidi, Ida Agustini
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1393

Abstract

Cassava is a local food that has low shelf life. Mocaf flour is processed cassava which is modified by fermentation. This study used a randomized block design (RBD) method with 3 repetitions. With the treatment of tape yeast concentration which consists of 3 levels, namely 1%, 1.5% and 2% and the treatment of fermentation time with 3 levels, namely 24 hours, 48 hours, and 72 hours. Data were analyzed using ANOVA then continued with the BNJ test with a level of 5%. As well as the hedonic scale scoring organoleptic test. The results showed that the highest value for the color parameter L was 296.66, color a was 5.17, color b was 34.21, organoleptic aroma was 188, organoleptic color was 167.5.
The Effect of Organic Liquid Fertilizer Chicken Eggshell with Onion Skin Waste For The Growth and Yield of Basil Plant (Ocimum basilium L.): Pengaruh Pemberian Pupuk Organik Cair (POC) Limbah Cangkang Telur Ayam dan Kulit Bawang Merah Terhadap Pertumbuhan dan Hasil Tanaman Kemangi (Ocimun basilicum L.) Waliyuddin, Achmad Wirdan
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1394

Abstract

This study aims to determine the effect of applying liquid organic fertilizer from chicken eggshell and onion skin waste for the growth and yield of Basil plants which were carried out from May to June 2023, using a single factor Randomized Block Design (RBD) with 4 experimental levels, namely D0: Without POC, D1: (100 ml POC + 1 L Water), D2: (200 ml POC + 1 L Water), D3: (300 ml POC + 1 L Water), D4: (400 ml POC + 1 L Water ) which was repeated 3 times. The variables observed were plant height, number of leaves, number of branches, stem diameter, flower weight, leaf weight and plant weight. Then analyzed the variance using ANOVA to determine the effect of giving POC which will then be carried out by a BNJ follow-up test. The results of the study showed that the application of liquid organic fertilizer from chicken eggshell and onion skin waste in D2 treatment with a dose of 200 ml POC + 1 L of water gave the highest yields of basil plants with the highest number of leaves, number of branches and leaf weight.
Sentiment Analysis Before Presidential Election 2024 Using Naïve Bayes Classifier Based On Public Opinion In Twitter: Analisa Sentimen Jelang Pilpres 2024 Menggunakan Naïve Bayes Classifier Berdasarkan Opini Publik Di Twitter Prasetyo, Heri; Fitrani, Arif Senja
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1395

Abstract

This study aims to determine the performance of the Naïve Bayes Classifier algorithm and sentiment analysis tested on a dataset obtained from Twitter social media scrapping with the topic of 2024 presidential candidates. Three candidates frequently discussed in public spaces were used as keyword parameters in data mining: #anis, #ganjar, and #pilpres2024, resulting in 3021 tweets extracted from 12/1/2022 to 31/1/2023, which were successfully converted to ".csv" format documents. Public opinions extracted from the dataset were then pre-processed using the Python programming language, resulting in 2157 cleaned tweets. The data that passed the pre-processing stage was then labeled as positive or negative sentiment. Sentiment analysis was performed using the Naïve Bayes Classifier algorithm with three testing experiments using different training and testing data compositions in each experiment. The results of the study showed that the best Naïve Bayes model was obtained in the first experiment with a 10% testing data and 90% training data composition, resulting in 71% accuracy, 93% precision, 66% recall, and an f-measure score of 77%. The conclusion of the study is that the electability of the 2024 presidential candidates shapes public opinion and generates public sentiment in the form of positive and negative tweets. Positive tweets had a higher percentage of 71.5% (1543), while negative sentiment tweets accounted for 28.5% (614). Further research is expected to produce different information by using different classification algorithms and larger data sets.
The Effect Of The Addition Of Db Killer On The Noise Of Yamaha Vixion 150cc Racing Motorcycle: Pengaruh Penambahan Db Killer Pada Knalpot Racing Motor Yamaha Vixion 150cc Terhadap Kebisingan Jagadhita, Phaundra Rexha; Akbar, Ali
Procedia of Engineering and Life Science Vol. 4 (2023): Proceedings of the 6th Seminar Nasional Sains 2023
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v4i0.1396

Abstract

Indonesia is one of the countries that has experienced a significant increase in the number of motorcycle vehicles, especially the Yamaha Vixion motorcycle, which is a sport-type motorcycle, a motorized vehicle which causes noise pollution arising from excessive noise levels. The aim of the study was to find out the results of the analysis of the noise level produced by motorbikes between standard and racing exhausts using the Intact-Group Comparison experimental research method. Experimental group (treated) and control group (no treatment). Population of all types of motor vehicle exhaust, sample 2 types of exhaust, namely standard and racing. the independent variable is the use of standard exhaust and racing exhaust on motorbikes. The dependent variable is noise level. The HC compound on the standard exhaust compared to the Racing R9 exhaust can significantly reduce HC exhaust emissions. The standard exhaust CO compound is better than racing exhaust. So the noise level and exhaust emissions of racing exhausts are higher than standard exhausts. So that racing exhaust is more dangerous if it is used frequently because it contains a noise level that is too high.

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