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Anwar Ilmar Ramadhan
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Journal of Applied Sciences and Advanced Technology
Published by Universitas Muhammadiyah Jakarta
ISSN : -     EISSN : 26226553     DOI : 10.24853/jasat
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering
Journal of Applied Sciences and Advanced Technology (JASAT) is an international peer-reviewed journal dedicated to interchange for the results of high quality research in all aspect of applied sciences, advanced technology. The journal publishes state-of-art papers in fundamental theory, experiments and simulation, as well as applications, with a systematic proposed method, sufficient review on previous works, expanded discussion and concise conclusion. As our commitment to the advancement of science and technology, the JASAT follows the open access policy that allows the published articles freely available online without any subscription.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 94 Documents
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Efficiency Analysis for Plate Type Heat Exchangers Using Nanofluids in the Primary Cooling System of the TRIGA 2000 Nuclear Reactor with Computational Fluid Dynamics Code Yusuf, Yusuf; Ramadhan, Anwar Ilmar; Umar, Efrizon; Fitriana, Rian; Firmansyah, Firmansyah; Azmi, Wan Hamzah
Journal of Applied Sciences and Advanced Technology Vol. 6 No. 3 (2024): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.3.117-128

Abstract

The TRIGA reactor is equipped with a primary cooling system that transfers heat from the reactor tank water to the secondary cooling system. Heat transfer in this system occurs mainly in plate-type heat exchangers located in the reactor building, using forced convection with the help of primary and secondary pumps. This research aims to evaluate the effectiveness, efficiency, heat transfer rate, and temperature difference. The analysis was carried out through CFD (Computational Fluid Dynamics) modeling using ANSYS Spaceclaim for geometric design and ANSYS FLUENT for simulation. Simulations using ZrO2-Water Nanofluid with volume concentrations of 0.2%, 0.6%, and 1% and variations in mass flow rates of 15 kg/s, 20 kg/s, and 25 kg/s. The simulation results show the distribution of temperature, pressure and fluid velocity. The theoretical analysis of the plate type heat exchanger shows that the use of ZrO2 with a concentration of 1% has the highest efficiency, which is 3.39% at a mass flow rate of 25 kg/s, and an efficiency of 64.82% at a mass flow rate. as much as 15 kg/s.
Quality Improvement and Market Diversification of Honey Bee and Herbal Based Products in Herbal Propolis Mouthwash Hendrawati, Tri Yuni; Nugrahani, Ratri Ariatmi; Hasyim, Ummul Habibah; Puteri, Renty Anugerah Mahaji; Permatasari, Tria Astika Endah; Darto, Darto; Andriansyah, Miftah; Wusono, Ciska Nabilla; Hidayat, Sri
Journal of Applied Sciences and Advanced Technology Vol 6, No 2 (2023): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.2.43-48

Abstract

In the 2023 Kedaireka matching fund grant activity with the title pimproving the quality and market diversification of honey bee and herbal based products Scheme Downstreaming innovation from research results for commercialization purposes, innovation has been carried out in the production of herbal propolis mouthwash. In the herbal propolis mouthwash innovation, a formula was combined on the function of propolis and the results of betel leaf extraction for a non-alcoholic mouthwash formula. The prototype of this mouthwash has received a distribution permit from BPOM NA with number NA 18231400102 using the Prolizama brand. This activity is a collaboration between Universitas Muhammadiyah Jakarta and partner CV Madu Apiari Mutiara in Depok, West Java, Indonesia. In this activity, the activities carried out include making prototypes, testing, packaging design, processing BPOM NA distribution permit certification, limited scale production, optimizing online marketing via the website and making a business plan for the UMJ and CV Madu Apiari Mutiara agreement, Madu Apiari Mutiara. Innovation Herbal propolis mouthwash with natural composition, high antioxidant and anti-inflammatory in combination with propolis and betel herbs. In achieving a price competitive product, it is hoped that it will be a substitute for propolis mouthwash imported from Japan without expensive herbs. This formula is being patented. The production of herbal propolis mouthwash is expected to increase partner income. In the implementation of independent learning, the MKBM independent campus is the fulfillment of IKU 2, Students Gain Experience Outside Campus, IKU 3, namely Lecturers Doing Activities Outside Campus and IKU 5, Lecturers' Work Results are Used by the Community. The Depok City Regional Government and the community will have superior products, herbal jelly candy and herbal propolis mouthwash that are healthy and halal. A significant impact for UMJ is an increase in the entrepreneurial atmosphere for lecturers and students.
Comparison of Genetic Algorithm Optimization with Support Vector Machine (SVM) for Weather Forecast Andriani, Siska; Wihartiko, Fajar Delli
Journal of Applied Sciences and Advanced Technology Vol. 6 No. 3 (2024): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.3.83-90

Abstract

Weather forecasts are one of the important factors for daily activities. It can be used for daily work activities such as farming, aviation, production and distribution. The Meteorology, Climatology and Geophysics Agency makes weather forecasts based on weather parameters, namely temperature, air pressure, solar radiation, humidity and rainfall. The weather forecast class is divided into 5 classes, namely Cloudy, Rainy, Sunny, Cloudy Rainy and Cloudy Sunny. In this research, a comparison of weather forecast models using Learning Vector Quantization optimization and Genetic Algorithms will be made with weather forecast models using the Support Vector Machine method. The data used in this research is weather data at the Citeko Class III Climatology and Geophysics station, the data used is data from the last 3 years. Then the data is divided into training and test data using percentage split with a division of 65% used for training data and 35% used for test data. After making the model using the LVQ-GA and SVM methods, a comparison of the model test results was carried out, from the test results the accuracy value was calculated using a confusion matrix for each model. The accuracy result of the LVQ-GA optimization weather forecast model was 73%, while the weather forecast model using the SVM method obtained an accuracy value of 81.5%, thus the results from SVM were better.
Manufacture of Biodegradable Plastics from Cassava Starch (Manihot Escullenta) with Variable Glycerol Plasticizers and Chitosan Reinforcement Zihan, Nurul; Nugrahani, Ratri Ariatmi; Hendrawati, Tri Yuni
Journal of Applied Sciences and Advanced Technology Vol 7, No 1 (2024): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.7.1.1-6

Abstract

Biodegradable plastic is an alternative environmentally friendly packaging material because it is made from renewable materials and is scientifically easily degraded by microorganisms and by weather. Renewable material that is abundant in Indonesia is cassava which has high potential as a raw material for making biodegradable plastics. Purpose This study was conducted to determine the process of making biodegradable plastic from cassava starch, knowing the effect of adding glycerol and chitosan to the mechanical properties of biodegradable plastics, and know the characteristics of biodegradable plastics from the best conditions. The process of making biodegradable plastic from cassava starch begins with mixing cassava starch with water and processing until starch dough is formed. Next, glycerol is added to the starch dough and mixed until homogeneous. The final stage is chitosan added to the mixture and stirred until well mixed. The mixture is then heated and molded according to the desired shape. Biodegradable plastics produced from a mixture of cassava starch, glycerol, and chitosan have good mechanical properties and can decompose naturally in the environment for the study variables with concentrations of glycerol 2%,4%,6%,8%,10% and chitosan 1%,3%,5%,7%,9% in a mixture of 100 ml. Mechanical tests such as tensile strength, percent elongation and biodegradation of biodegradable plastics are carried out on product characteristics. The result of this study was to obtain the highest tensile strength in sample 1 of 3.41 Mpa and had an elongation of 68%. While the highest elongation in sample 3 was 130% and tensile strength was 0.26 MPa. The highest biodegradation result in sample 1 was 31.70% and the lowest in sample 5 was 6.55%.
The Influence Of Work Surface Roughness Caused By Fraising Machined With HSS Chies Aljufri, Aljufri; Rizki, Muhammad Nuzan; Akmal, Syarifah; Mutia, Sri; Rambe, Farhan Wafi
Journal of Applied Sciences and Advanced Technology Vol 6, No 2 (2023): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.2.49-56

Abstract

The development of production techniques is required to produce good products that have standards for the products produced, both in terms of profile shape, size precision, surface roughness, hardness, material flexibility, and others that comply with standards. The surface roughness of a product can affect its functions, such as its level of precision and ability to accept loads. This research aims to find out how much influence cutting speed and depth of cut have on surface roughness with variations in cutting speed parameters of 21 meters/minute and 26 meters/minute and for AISI 4140 steel cutting speed parameters of 12 meters/minute and 17 meters/minute and cutting depths of 0.1 mm and 0.3 mm on four types of steel with End Mill cutting blades made from High-Speed Steel with a total of 4 flute cutting blades. Next, surface roughness testing and analysis of variance were carried out to determine the influence of parameters on surface roughness. The results obtained were that the largest average surface roughness, namely Ra = 5.33 µm, occurred on AISI 4140 steel at a cutting speed of 12 m/min with a cutting depth of 0.3 mm. Meanwhile, the smallest average surface roughness, namely Ra = 0.91 µm, occurred on AISI 1045 steel at a cutting speed of 21 m/min with a cutting depth of 0.1 mm. Next, an analysis of the variance method was also carried out with the following results: cutting speed only affected S45C steel because the value of Fcount>Ftable (13.18107506 > 5.32). The depth of cut does not have a significant effect on surface roughness on all types of steel because of the comparison results Fcount<Ftable. The interaction of cutting speed and cutting depth does not affect surface roughness because the comparison shows that Fcount <Ftable for all types of steel.
Optimization of the Ultrasonic Extraction Process of Kasumba Turate (Carthamus tinctorius Linn) Using the Response Surface Metodology (RSM) Technique Zulfikar, Zulfikar; Hendrawati, Tri Yuni; Redjeki, Athiek Sri
Journal of Applied Sciences and Advanced Technology Vol. 6 No. 3 (2024): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.3.91-98

Abstract

Kasumba turate (Carthamus tinctorius Linn) or safflower is a traditional medicine used by South Sulawesians. Polyphenol compounds and antioxidant activity are active components of kasumbu turate. This component can be obtained through extraction. The goal of this study was to find the best conditions for extracting kasumba turate with high total phenol levels and strong antioxidant activity, as well as encapsulating the resulting extract. The ultrasonic assisted extraction (UAE) method was used to extract Kasumba turate with methanol, and the Responses surface Methodology method was used to optimize the extraction. Behnken Box Variations in composition solutions of 50, 60, 70, 80, and 90%, as well as time variations of 20, 30, 40, 50, and 60 minutes. A solvent ratio of was used for sample extraction 1: 1 using Methanol solvent and water, determined which is the best result of this variable, and continued by analyzing is a test analysis with Spectrophotometry, DPPH, and the best results of the variable are analyzed using Spectofotometry to see the content of flavonoid compounds in Kasumba Turate Flowers.      
Performance of Beeswax and Ricebran-Wax Coating on Weight Loss of Local Indonesian Fruits: Kirana Banana, Gedong Mango, and Pontianak Orange Nugrahani, Ratri Ariatmi; Hendrawati, Tri Yuni; Hasyim, Ummul Habibah; Hakim, Rusnia Junita
Journal of Applied Sciences and Advanced Technology Vol 7, No 1 (2024): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.7.1.7-14

Abstract

Bananas, mangoes, and oranges are fruit commodities that are quite potent and have a promising export market share. The shelf life of the fruit is not long and causes physical-chemical damage to the fruit, one way that can be done in post-harvest handling of the fruit is by using the wax method. This study used types of wax, namely beeswax and rice bran wax. The purpose of this study was to determine the effect of beeswax coating on fruit weight loss, to determine the effect of rice bran wax concentration on the characteristics of rice bran wax coating and fruit weight loss, determine the effect of storage time of bananas, mangoes, and oranges on fruit weight loss. The independent variables in this study included rice bran wax concentration (6;9;12;15;18)% and fruit storage time of 3 weeks, while the dependent variables in this study included pH, density (gr/ml), viscosity (seconds), mango fruit weight loss ( %). The procedures in this study include the manufacture of beeswax coating, and rice bran coating, analysis of characteristics of beeswax coating and rice bran wax coating, and analysis of weight loss of bananas, mangoes and oranges after coating. The results of the analysis of the characteristics of rice bran wax coating (pH, density, viscosity) on the concentration of rice bran wax (6; 9; 12; 15; 18)% showed that the pH showed a downward trend with a pH value of 9.33; 9.22; 9.21; 9.18 and 8.95, the density showed a tendency to increase with a density value of 1.018; 1.021; 1.022; 1.023; and 1.026 gr/ml, the viscosity showed a tendency to increase with a value of 8.85; 8.2; 8.3; 8.43; 8.56 seconds. Characteristics of Beeswax Coating 12% resulted in a pH of 9.19, a density of 1.019 g/mL, and a viscosity of 8.3 seconds. The smallest weight loss of mangoes and oranges for 3 weeks was fruit coated with 12% beeswax coating, and the smallest weight loss for bananas for 3 weeks was fruit coated with 12% rice bran wax coating.
Development of 3D Printed Autonomous Warehouse Robot Using Mecanum Wheel and Robot Arm Hadisujoto, Budi; Rabbani, Ariq Naufal; Saptaji, Kushendarsyah; Fernandez, Nikolas Krisma; Wibowo, Djati
Journal of Applied Sciences and Advanced Technology Vol 6, No 2 (2023): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.2.57-64

Abstract

Industrial revolution 4.0 has affected many industries, including warehouse management. Warehouse management so far has progressed with the introduction of automation, i.e. using warehouse robots to improve the flow of the warehouse management. This work discusses and builds a 3D-printed warehouse robot prototype in the form of mobile manipulator with mecanum wheel. The mecanum wheel is chosen for better kinematics movement. The prototype warehouse robot is designed to accept command wirelessly through Bluetooth via an Android application. The prototype robot was successfully built and tested. The movement test shows it can move freely in any direction due to the mecanum wheel. However, the robot still has poor repeatability and reliability. Based on the result, the prototype can serve as a basis for an affordable warehouse robot, and the future work to improve the repeatability and reliability of the robot is strongly encouraged.
Study of Fluid Flow Characteristics In A 90° Pipe Bend With Varying Guide Vane Length Julian, James; Purba, Riki Hendra; Sedeq, Khalees; Wahyuni, Fitri; Junaedi, Thomas
Journal of Applied Sciences and Advanced Technology Vol. 6 No. 3 (2024): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.3.99-108

Abstract

The influence of guide vane length and Reynolds number was investigated using computational fluid dynamics methods. By using a structured mesh, it is known that the three mesh variations used have been verified using the Richardson Extrapolation method. The validation process also showed quite good results. From this research, it can be seen from the velocity profile trend, which is close to the experimental results from previous studies. Changing the Reynolds number does not significantly change the velocity profile at the outlet bend. However, it can be seen that changes in the Reynolds number impact the fluid flow pattern produced around the pipe bend. It can be seen clearly, especially when the velocity is negative. Changing the length of the guide vane changes the flow pattern quite significantly. It is known that the shorter the guide vane used, the velocity profile will tend towards the outer core. Furthermore, using a guide vane increases the velocity profile at the position -0.3≤r/R≤ -0.06. Using a guide vane has proven to eliminate negative velocity areas on the inner core side of each variation.
Development of Educational Tourism Model Based on Local Competency at Sangkhom Islam Wittaya School Thailand Gustia, Helfi; Haryanto, Lorenta In; Darto, Darto; Hendrawati, Tri Yuni; Mahendra, Okta; Lemsoh, Jarunee
Journal of Applied Sciences and Advanced Technology Vol 7, No 1 (2024): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.7.1.15-24

Abstract

Sangkhom Islam Wittaya School is a privately owned Islamic school that provides standardized subjects and is overseen by the Songkhla Provincial Private Education Office. Despite being situated in a region renowned for its tourism potential, its allure remains untapped. This activity aimed to address the challenges partners overcome by developing educational approaches incorporating tourism principles. The activity commenced with a survey in 2023 and proceeded with coaching sessions from January to March 2024. The partners comprised six Sangkhom Islam Wittaya School administrators and numerous Primary and Junior High School students. This community service program employed a qualitative method integrating descriptive and explanatory approaches. Primary data collection involved conducting interviews, making observations, and organizing focus group discussions (FGDs). On the other hand, secondary data was obtained from reports, books, and other published materials. The observed tourist attractions encompassed floating markets, culinary establishments, souvenir stores, Buddhist temples and statues, hilltop museums, wayside businesses, and other similar attractions, all meticulously documented as recommended places to visit. The guided visit was divided into two days based on distance analysis. The authors suggested some places on the trip around. On the first day, students can visit Hat Yai Municipal Park, Khlong Hae Floating Market, and Kim Yong Market. On the second day, students explore Samila Beach, Songkhla Old Town, and the Folklore Museum. The findings of the partner satisfaction survey indicated that the partners expressed delight with the program implementation.

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