cover
Contact Name
Anwar Ilmar Ramadhan
Contact Email
anwar.ilmar@ftumj.ac.id
Phone
+6281578530897
Journal Mail Official
anwar.ilmar@ftumj.ac.id
Editorial Address
Faculty of Engineering Universitas Muhammadiyah Jakarta Jl. Cempaka Putih Tengah 27 Jakarta Pusat 10510 Indonesia
Location
Kota adm. jakarta selatan,
Dki jakarta
INDONESIA
Journal of Applied Sciences and Advanced Technology
ISSN : -     EISSN : 26226553     DOI : 10.24853/jasat
Core Subject : 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.
Articles 30 Documents
OIL PALM PRESSED FIBER VALORIZATION: IMPROVING FIBER PROCESSING IN COMPOSTING WITH AZOTOBACTER FOR USE IN POTTING MEDIA OF BRASSICA RAPA Madusari, Sylvia; Firmanto, Zakat; Sinuraya, Rufinusta
Journal of Applied Sciences and Advanced Technology Vol 2, No 3 (2020): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.136 KB) | DOI: 10.24853/jasat.2.3.65-72

Abstract

Fiber (mesocarp fiber) is a solid waste generated in the oil palm factory which potentially used as fertilizer through composting. Addition of Azotobacter sp. in composting can increase nitrogen content, which improve the quality of compost. The purpose of this research was to determine the effect of the enrichment of Azotobacter sp. in composting of oil palm pressed fiber and analyzing the nutrient content and its potential as a planting medium of pakcoy (Brassica rapa). Descriptive method was used in the process of composting by assessing the physical and chemical properties of the compost produced. Fiber compost testing as a planting medium was carried out using a nonfactorial Randomized Complete Block Design in 3 variations of 30%, 50% and 70% treatment, and each mixed with subsoil. The results of compost physical parameters analysis showed the dark brown color, and the texture showed more crumb in the compost enriched with Azotobacter sp. The best pH was found in the compost treated with the addition of Azotobacter sp., which was 8.36. Analysis of compost application on pakcoy growth showed that the highest leaf area (69.73 cm2) and number of  stomata (36.4 mm2)-1) were found in the F2P2 treatment (Azotobacter Fiber Compost 50% + Subsoil 50%); The highest root length (28.38 cm), shoot dry weight (2.58 g), and root dry weight (2.26 g) were found in the F2P3 treatment (Azotobaacter Fiber Compost. 70% + Subsoil 30%). From the results of these experiments, the compost enriched with azotobacter has beneficial effects on crop growth could be attributed to soil amendments.
SOUNDING AUTOMATION PROTOTYPE IN STORAGE TANK MODEL BASED ON ARDUINO UNO Mahfud, Ahmad; Rahardja, Istianto Budhi; Amran, Muh
Journal of Applied Sciences and Advanced Technology Vol 2, No 1 (2019): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (522.772 KB) | DOI: 10.24853/jasat.2.1.13-16

Abstract

Sounding is the process of measuring and calculating a product to find out the amount. In the process of CPO sounding, measurements are made of the temperature of the oil in the storage tank. Storage tank is a tank used to store crude palm oil (CPO) produced before shipping. Sounding crude palm oil is an oil measurement process that includes the measurement of CPO levels and temperatures as an item to get the mass of CPO (kg CPO). The process of measuring the volume of oil is done using a sounding meter dipped in CPO in a storage tank to the measuring table. Temperature measurements are carried out using a thermometer that is inserted into a storage tank. In conditions on the ground that the measurement of the storage tank or storage tank is done manually to calculate the tank volume and there are many weaknesses. In this study, we will describe the sounding technique or measure the volume of oil in a storage tank by means of automation, where the automation system is designed with the aim of being able to carry out the measurement process on the storage tank in an automatic way. The results of this study can be concluded that measurements on storage tanks can be done automatically with the help of the HC-SR04 proximity sensor, thermocouple sensor, flow meter sensor and Arduino UNO which are passed on to laptops and gadgets, where based on the results of the experiments carried out the percentage of accuracy is obtained each sensor starts from the proximity sensor with 99.98%, temperature sensor 99.47% and flow meter sensor 99.88%.
DESIGNING SPECIAL TOOL REMOVE AND INSTALL HOIST CYLINDER ON UNIT DUMP TRUCK HD 1500-7 Rasma, Rasma; Purwono, Hendro
Journal of Applied Sciences and Advanced Technology Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.576 KB) | DOI: 10.24853/jasat.1.2.59-62

Abstract

Hoist Cylinder is an important component of the Dump Truck HD 1500-7 unit that serves as a support for the vessel during loading and unloading. Leakage due to the loss of dust seal that is unable to block the dirt and lubricating oil, is one of the reasons for the replacement of the hoist cylinder. The solution of the leak is to replace the hoist cylinder, but the difficulty of removing and install hoist cylinder process causes the lead time to become longer and the percentage of non-operating units (down time) increases. This is because of the drop of the rod hoist cylinder and the narrowing of the work of removing and installing. To lift and prevent the release of mechanical rod cylinders, it is necessary to tie the cylinder rod by using the belt. But the method is dangerous and ineffective because of repositioning belt due to difficult position. Therefore, tool is made to lift the rod cylinder so as not to extend, so it can speed up the process of removing and installing and reducing the percentage of non-operating units (down time), as well as providing benefits in terms of save cost of man power and lead time, and in terms of save cost loss production.
ANALYSIS OF THE TENSILE STRENGTH OF COMPOSITE MATERIAL FROM FIBER BAGS Diniardi, Ery; Nelfiyanti, Nelfiyanti; Mahmud, Kisman H; Basri, Hasan; Ramadhan, A I
Journal of Applied Sciences and Advanced Technology Vol 2, No 2 (2019): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (964.396 KB) | DOI: 10.24853/jasat.2.2.39-48

Abstract

The use of composite materials in Indonesia, as a nonmetal alternative material has begun to increase. Composite use has grown from water tanks from fiberglass materials, household appliances, children's toys, sports equipment, furniture/interior design to automotive components and aircraft. Many of the advantages of this composite material include hand, strong, anti-corrosion, finely tuned finish. Its mild nature has a direct impact on energy savings. The prospect of composite materials as a non-metal alternative material is rapidly growing and its use. Various types of reinforce used can be influenced by the prices available, so seek alternatives as a commonly used glass fiber substitute woven rowing. The substitute used is a sack of gourds of the same kind as woven rowing, from which the same type of fiber is tried to find its strength by undergoing a pull test. And as a result of the test the mateial can know its power.
CRYSTAL EXERGY VALUE (WAX) CRUDE PALM OIL (CPO) INFLUENCE BASED ON THE MIXED TYPE Rahardja, Istianto Budhi; Dinary, Rulan; Ramadhan, Anwar Ilmar
Journal of Applied Sciences and Advanced Technology Vol 1, No 3 (2019): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (932.74 KB) | DOI: 10.24853/jasat.1.3.91-98

Abstract

Liquid wax (wet wax) is a source of heat energy and lighting produced from palm oil to provide illumination where needed. The need for candles is used for lighting the environment, the place, and the heating of the objects for need. The manufacture of liquid candles is to provide the base oil of crude palm oil mixed evenly in the melting point of solid paraffin. Paraffin and CPO are melted together and placed, then cooled. The wax ignition process produces heat and light. Results that can be shown with a comparison between palm oil and solid paraffin will produce hardness, texture, and flame ignition. With 50 grams of paraffin, 50 gr CPO and 1 kg of oxygen (1: 5) of the fuel of 250 gr O2, will produce 1300 gr CO2, 1175gr H2O, -1487,5 gr O2 and 940 gr N2. Different paraffin granules, will produce the same product in energy balance, while the value of N2 remains. Experimental value from mixing CPO and paraffin by 50 gr: 50 gr yielding entropy generation (S gen) and CPO wax exudo of 257.16 kJ / kmol.K and 77,918.67 kJ/kmol and its value decreases based on paraffin administration
THE ORGANOLEPTIC AND PHYSICOCHEMICAL CHARACTERISTIC OF GELATO BY FISH BONE GELATIN ADDITION Alika, Vinnoya Apcaresta; Atma, Yoni
Journal of Applied Sciences and Advanced Technology Vol 1, No 1 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.472 KB) | DOI: 10.24853/jasat.1.1.31-38

Abstract

This study aims to determine the effect of fish bone gelatin addition on physical, chemical, and organoleptic characteristics of gelato. This research was done on three stages: fish bone gelatin extraction, gelato production and analysis. The treatment factor consists of concentration: 0%, 0.4%, 0.8% and 1.2% of fish bone gelatin additions. Data were analyzed by one way analysis of variant (ANOVA) at level 5% and then continued by Tukey HSD (Honestly Significant Different) test or Tukey?s range test. The result shown that fish bone gelatin addition has effect to organoleptic, physical, and chemical characteristics of gelato. The best concentration was 1.2% for fish bone gelatin addition. Gelato with concentration 1.2 % fish bone gelatin have texture, taste, colour, aroma and aftertaste range in netral until like slightly in organoleptic (hedonic) value range i.e between 2.62 until 3.70. This gelato have overrun, melting point and pH in 30.48%, 38.4 minutes and 6.6 respectively. It was contains 3.62% protein, 6.32% fat, and 15,62% sucrose. This nutrition contents was confirm with the Indonesian National for Standardization  (SNI) for ice cream groups.
ANALYSIS SYSTEMS OF AFTERCOOLER ON BULLDOZER D375A-6R Basri, Hasan; Darmawan, Jaref; Diniardi, Ery; Ramadhan, A I; Firmansyah, Firmansyah
Journal of Applied Sciences and Advanced Technology Vol 2, No 3 (2020): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (602.028 KB) | DOI: 10.24853/jasat.2.3.73-76

Abstract

The bulldozzer is seen as the most efficient heavy equipment unit for mining, specifically dozzing and ripping material. The purpose of this study was to analyze damage due to cracks in the cooler afterwards which caused dust and dirt to enter the air intake system which caused excessive piston, piston ring and cylinder wear liners in the Bulldozer. The research method was conducted using 8-step troubleshooting analysis. The results and discussion are damage due to cracks in the after cooler which causes dust and dirt into the air intake system which causes the piston, piston ring and cylinder liner to wear out excessively. The piston, piston ring and cylinder liner have excessive scratching and wear, so the compression pressure that should be compressed inside the combustion chamber experiences a leak where the air enters the crankcase chamber.
TROUBLESHOOTING BLOW BY PRESSURE HIGH ON THE KOMATSU BULLDOZER UNIT D375A-6R Basri, Hasan; Diniardi, Ery; Ramadhan, Anwar Ilmar
Journal of Applied Sciences and Advanced Technology Vol 2, No 1 (2019): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (727.77 KB) | DOI: 10.24853/jasat.2.1.17-20

Abstract

PT United Tractors Tbk Loajanan-sanga site backs up a large number of customers, one of which is PT. RCI (RPP Contractors Indonesia) which is engaged in coal mining with the Komatsu D375A-6R unit which is used for dozzing and ripping. From the D375A-6R unit at PT. RCI experienced Troubleshooting on engines which caused Blow by pressure high, which resulted in the engine low power and could not run because the oil engine continuously exited from the oil engine filling hole, if the engine is forced to operate it is feared that the engine oil will run out and the engine components it will experience excessive wear and can also experience jammed which results in the maximum performance of the D375A-6R komatsu unit.
COMPARISON THERMAL EFFICIENCY AND FUEL CONSUMPTION OF ELECTRIC SUPERCHARGER VARIATIONS FOR OTTO ENGINE E70 Purwanti, Endah; Rosid, Rosid; Faizal, Sonny
Journal of Applied Sciences and Advanced Technology Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.403 KB) | DOI: 10.24853/jasat.1.2.63-68

Abstract

A Pressure Wave Supercharger (PWS) is a technical way to increase the incoming pressure on a diesel engine. PWS utilizes hot cylinder exhaust gas energy to build in air pressure such as conventional turbo filling. In normal combustion the air and fuel mixture will burn perfectly if a stoichiometric mixture, gasoline fuel can be said to be stoichiometric if to burn 1 kg of fuel requires 14.7 kg of air. While the engine rotation is high, it requires a lot of fuel while the intake air is limited in number. Based on this description, an examination of air intake into the intake manifold is required with an Electric Supercharger which functions as an air compressor. Using the Otto engine with modifications to the piston, compression ratio, ignition timing, injection duration and E70% bioethanol fuel. With the installation of these tools, can get the characteristics of combustion and improve the problems that occur associated with a rich mixture so that the engine performance becomes optimal and exhaust emissions become minimal. The result of variations in Electric Supercharger voltage at 6 volts, 8 volts and 10 volts can be seen that the best performance such as bmep, thermal efficiency has increased respectively by 14.73%, 22.87%, and sfc has decreased by 23, 84%.
ANALYSIS OF HEAT TRANSFER OF FIBER MESOCARP OF PALM OIL (ELAEIS GUINEENSIS JACQ) AS ROOF BUILDING Rahardja, Istianto Budhi; Rikman, Rikman; Ramadhan, Anwar Ilmar
Journal of Applied Sciences and Advanced Technology Vol 1, No 1 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.964 KB) | DOI: 10.24853/jasat.1.1.1-8

Abstract

Palm oil fibers are waste products from Palm Oil Mill which is in the form of debris, solid, length of 3-4 cm, contained in coconut fruit (mesocarp) meat. Fiber roof building is the result of utilization of palm fiber waste as a roof of a building that is used to reduce heat from sunlight or from heat sources, so it is not directly exposed to humans and the surrounding environment. Fiber roof building is made by arranging the fiber in the mold and arranged in accordance with the dimensions to be made. To bind between fibers, used resin that has been mixed with the catalyst material, so easy to dry quickly. The ratio between resin and fiber is 1: ¼. The result of conduction heat conduction test that has been done on the fiber test object can reduce the highest heat of 125 °C and the lowest is 109 °C from the given heat source of 200 °C. This shows that palm fiber can be used as a heat reducer for buildings.

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