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Journal of Science and Applicative Technology

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Published by Institut Teknologi Sumatera

ISSN : 25810545 EISSN : 25810545 DOI : -

Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Materials Science & Nanotechnology Mechanical Engineering

Journal of Science and Applicative Technology is soon indexed by google scholar, SINTA (Science and Technology Index), portal garuda, DOAJ (Directory of Open Access Journals). This journal has been registered at PDII LIPI (ISSN: 2581-0545). This journal is semiannual journal. It will be published in June and December. The objective of the journal is to provide a room for students, researchers, lecturers, pratictioners and communities to present their ideas regarding several topics covered in this journal. Journal of Science and Applicative Technology covers wide area of research. We welcome full research articles in the following area, including but not limited to : 1. Renewable Energy 2. Green Infrastructure 3. Community Development 4. Computer Science 5. Civil and Environmental Engineering 6. Electrical Engineering 7. Mechanical Engineering 8. Telecommunication 9. Earth and Planetary Sciences (Geography, Geodesy, Geology, Geophysics, Oceanography, Astronomy, Atmospheric) 10. Natural Sciences (Mathematics, Chemistry, Physics, Statistics) 11. Life Sciences (Biochemistry, Biology, Pharmacy) 12. Regional and City Planning

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Articles 223 Documents

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Penggunaan Data Citra Landsat Multitemporal untuk Monitoring Kondisi Ekosistem Mangrove di Teluk Kulisusu Kabupaten Buton Utara Mohammad Ashari Dwiputra; Rahmat Kurnia; Etty Riani
Journal of Science and Applicative Technology Vol 3 No 1 (2019): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Scientific information mangrove ecosystem at Kulisusu bay was limited. This study aims to identify mangrove ecosystems area change at Kulisusu bay within 20 years periods (1995-2015) using satellite imagery Landsat 5 TM (1995), Landsat 7 ETM (2005) and Landsat 8 OLI (2015). Analysis of the mangrove ecosystem changes was used NDVI algorithm then carried classification canopy density by three classes, high, medium and low density.The changes of mangrove ecosystems were based on the area changes of each 10 year. The NDVI results shown that on 1995 to 2005, high and medium classes were reduced respectively by 340 ha and 36 ha, low class area was 172 ha. The period within 2005 to 2015 shows that high areas were reduced by 756 hectares, then medium and low density class 22 Ha and 680 ha respectively. Conditions mangrove ecosystem during 30 years was from 1995 to 2015 shown that had been a heavy reduction in the high density class about 1096 hectares, a reduction of medium density class was 14 hectares and low class was 852 Ha. The amount of reduction in high density class was caused by the mangrove logging activities for charcoal used as raw materials, and fisherman activities likes boat lines for crab fishing ground in the mangrove ecosystem. Keywords: mangrove, NDVI, GIS, Kulisusu Bay

Multipurpose cadastre for campus room appraisal Satrio Muhammad Alif; Agung Pandi Nugroho; Bambang Edhi Leksono
Journal of Science and Applicative Technology Vol 3 No 1 (2019): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

The use of fundamental components of multipurpose cadastre which can be used as basic information and backbone for government policy with geographical information system as a tool are applied in this research method to appraisecampus room. The process to appraise of the facilities in a room begins with collecting facilities data which related to attribute data and defining room boundary which related to spatial data. Room appraisal are analysed by firstly calculate room valuebasedon facilities and activity hours.The method to calculate room value is comparison of quantity and functionality of facilities in every room. Thorough analysis is conducted to separate room value data containing human errors. The determination of which category (high, medium, low) every room fit in is based on distribution of value of every room value which is free of human errors. Room appraisal using this research method will lead to optimize every campus room especially low category room. This approach is also effective way to record number of rooms and facilities of campus comprehensively. Keywords: Multipurpose cadastre, Appraisal, Geographic Information System

Analisis Regresi Pada Tren Perubahan Garis Pantai di Pantai Krui dari Digitasi Citra Landsat Satriyo Panalaran; Trika Agnestasia Br Tarigan; Hendra Achiari
Journal of Science and Applicative Technology Vol 3 No 1 (2019): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Krui is a capital of Pesisir Barat Regency of Lampung Province which has important values on residential areas, business centers, government centers, and tourism destination. Kruis coast is adjacent to the Indian Ocean, which has the high wave characteristic cause the dynamic coastal process similarly to other sandy beaches on the west coast of Sumatera Island. The coastal process can be shown in the form of either coastline accretion due to sedimentation or shoreline reduction caused by the phenomenon of erosion and abrasion. The coastal process can be observed as a natural process to achieve an equilibrium of sediment transport along the coast. Also, Shoreline change is influenced by the height waves and the direction of incoming waves towards onshore depending on the season. The aims of this study is to get an overview of the shoreline changes that occur on the Krui Coast. Then it can be predicted the position of the coastline in the future. The regression model was chosen to estimate the position of shoreline in the future by utilizing a set of time-series data that refers to shoreline change within certain periods. Digitized Landsat-7 ETM+ satellite imagery is conducted in order to obtain shoreline position data in every year determinate as historical data. Based on this study, the rate of shoreline change in Krui Coast is within range of 0,12 meters/year to 41,35 meters/year, where is the shoreline change tends to increase. Keywords: Digitization, Landsat, Shoreline, Regression

Hedonic Test Method for Measuring Instant Pindang Seasoning Powder Preferences Dea Tio Mareta
Journal of Science and Applicative Technology Vol 3 No 1 (2019): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Instant seasoning for cooking are commonly known by people who want something practical. Pindang is a typical food of Lampung and South Sumatra Province, consisting of various spices and herbs. Instant pindang seasoning powder made with foam mat drying method using 3 varations of foam additives. The purpose of this study was to determine the level of taste, aroma, and color of instant pindang seasoning powder made with three variations of foam additives, namely 5% (w/w), 10% (w/w), and 15% (w/w). The hedonic test for instant pindang seasoning powder were carried out on 35 panelists. Panelists were faced with 3 samples with 3 different sample numbers. Panelists were asked to assess how much preference for seasoning products using hedonic scale. The hedonic test results showed that, with the addition of 15% (w/w) foam is preferred in terms of color. As for aroma and taste, there were no significant differences between the three products. Keywords: foam mat drying , hedonic test, instant pindang seasoning powder, pindang

Aplikasi Penggunaan Serah Wangi Sebagai Bioaditif Alami untuk Karakterasi Unjuk Kerja dari Mesin Diesel Abdul Muhyi; Rico Aditia Prahmana; Devia G. C. Alfian; Dicky J. Silitonga; Didik Supriyadi
Journal of Science and Applicative Technology Vol 3 No 1 (2019): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

The consumption of diesel fuel in Indonesia is increasing every year, one way to overcome this problem is to use natural bioaditive in the form of essential oils found in Indonesia. Essential oils used in this study are fragrant lemongrass because fragrant lemongrass contains carboxylic compounds (-COOH) [1,2,3]. With the aim of improving engine performance and reducing fuel consumption. This research was conducted by mixing fragrant citronella oil with diesel oil with a percentage of 1%, 0.5% and 0.1% of the total volume. Diesel engines are operated with variations in loading 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800 and 2000 W at a constant engine speed of 1500 rpm. The variables measured and calculated in this experiment are power, torque, Break Mean Effective Pressure (BMEP), Specific Fuel Consumption (SFC). The results showed that adding citronella oil to diesel fuel with a percentage of 1%, 0.5% and 0.1% significantly reduced fuel consumption by 15.5%, 3.6% and 2.6% respectively. The maximum reduction in fuel consumption reaches 0.055 liters / hour at 200W loading with a bioaditive level of 0.1%. The next study planned is to mix clove oil and citronella oil as bioaditive so that it is expected to reduce fuel consumption and engine corrosion. Keywords: Diesel engine, bioaditive, fragrant citronella oil, performance of diesel engines, fuel consumption

Desain dan Implementasi Inverter Satu Fasa 400 Watt dengan Metode Switching High Frequency Jauhar Ismiyadinata; Harry Yuliansyah; Muhammad Reza Kahar Aziz; Arief Syaichu Rohman
Journal of Science and Applicative Technology Vol 3 No 1 (2019): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

This article proposes a design of 400 watt inverter with frequency of 50 Hz at voltage of 12 Vdc input and 220 Vac output. This inverter is designed to convert the Direct Current (DC) into Alternating Current (AC) voltage with the purpose to utilize DC electricity generated by renewable energy. Hence, the energy can be employed as the replacement of the commercial electricity. In this research, the inverter is designed with the use of Switching High Frequency (SHF) method as the amplifier system applied for step up input voltage. Besides, the proposed inverter also utilizes the Sinusoidal Pulse Width Modulation (SPWM) method as the driver resulting the output signal in the form of pure-sine-wave. Furthermore, the switching system for SHF method in this research employs Arduino nano as the control and EGS002 as the SPWM driver. To obtain the real data, the examination is performed with connecting the inverter directly to the load, e.g., bulb, fan, and solder. Finally, the examination and analysis of the implementation result confirm that the design works well and fulfills the expected specification. Hence, this inverter design can be expected to provide the scientific contribution and applied for renewable energy especially in Indonesia, and generally in the world. Keywords: Arduino, DC-AC Inverter, SHF, Solar Cell, SPWM

Numerical Investigation of Electrospray Working Performance on Ethanol Andam Refino; Hadi Teguh Yudistira; Denny H. T. Nugroho; Deska L. Puspitarum
Journal of Science and Applicative Technology Vol 3 No 2 (2019): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Electrospray as an alternative method to fabricate thin film is studied. High voltage is required by the electrospray system. The requirement of high voltage is different for various liquid depending on the surface tension property. Ethanol was used to resemble the solvent used in thin film deposition. From the experimental work, jetting performance did not occur despite of the high applied voltage which is around 1 KV. In this work, numerical calculation is carried out to find the reason behind of unsuccessful jetting at 1 KV applied voltage. The percentage of Rayleigh limit is around 0.4. Electrospray performance at walking distance 5 mm using ethanol is predicted to be stable when the applied high voltage is approximately 1.1 KV. The numerical investigation indicates that the jetting performance will occur if the applied voltage is more than 1.1 KV.

Analisis potensi energi matahari di Institut Teknologi Sumatera: Pertimbangan Faktor Kelembaban dan Suhu Mohamad Samsul Anrokhi; Mahardika Yoga Darmawan; Ali Komarudin; Kiki Kananda; Deska Lismawening Puspitarum
Journal of Science and Applicative Technology Vol 3 No 2 (2019): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Indonesia's electricity needs are increasing in line with increasing population and living standards. Renewable energy is an alternative in avoiding dependence on conventional PLN electricity. This research is a further study of solar energy as an alternative energy to meet the electricity needs of Institut Teknologi Sumatera (ITERA) which always increases every year with the increasing number of students and the infrastructure of lecture infrastructure. Research on the potential of solar energy at the ITERA has been carried out before using conventional methods. This study further examines the potential of solar energy by considering various factors. This study uses solar cells with 100 WP specifications and uses Arduino UNO instrumentation to facilitate the measurement of current and voltage automatically which can be stored directly in memory cards. Based on the measurement results obtained a maximum power value of 66 watts that occurs at 11:00 and 12:00 WIB. Keywords: Solar cell, solar energy

Eksperimen Gangguan Getaran Pada Fenomena Cloaking Cahaya Tampak Sistem Empat Lensa Okky Fajar Tri Maryana; L. Y. Ginting; F. Pahlawan; M. Y. Darmawan
Journal of Science and Applicative Technology Vol 3 No 2 (2019): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Creating optical illusions or invisible objects by using cloaking devices is still being a concern for many researchers in the world. The cloaking devices are working in visible spectrum regime, large dimention, and replicable. Addition with the full-field of light, no new materials, simple infrastructure, and scale easily may be considered an â€˜idealâ€™ cloaking device. Based on four lenses cloaking system by Choiâ€™s work shows an idea for solution of blindspot large vehicleâ€™s problem. The set up for this optical system is regular covex lenses non-aberation based on educational laboratory framework. The experimental confirmation that cloaking area with 4f convex lenses is limited to certain areas only, not 100 % of the object to be observed can disappear from the view. Vibration disturbance generated by rotor module (wheels disturbance analogy on vehicles) applied on the system demonstrate that below on 2000 rotation per minutes (rpm) equal 33.34 hertz, optical illusion is still consistent. The results support the information to create optical cloaking prototype for optimizing large vehicle driverâ€™s visibility as alternative solution blindspotâ€™s problem.

PERANCANGAN TATA LETAK LABORATORIUM PAKAN DENGAN METODE COMPUTERIZED RELATIONSHIP LAYOUT PLANNING DI INDUSTRI PENGGEMUKAN SAPI Dian Fajarika; Rinda Gusvita; Novicha Sofriani
Journal of Science and Applicative Technology Vol 3 No 2 (2019): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Feed laboratory is a facility that guarantees feed quality in the feedlot industry. But the existence of this laboratory has not been fully considered both in terms of facilities and layout that ease the movement of workers. This research aims to analyze machine and raw material properties in the feed laboratory, to find total closeness rating between facilities according the need and designing the layout of facilities in the laboratory that can streamline the material flow. The problem is how to design facility layout in feed laboratory which has different tool and machine characteristics in limited space, how to plan material flow that can minimize work flow. The method used is computerized relationship layout planning (CORELAP). The result obtained is the design of the laboratory layout by comparing the optimum distance on the inter-work track. The calculation value from allocation relationship diagram showed the biggest total closseness rating is the testing room. From the calculation of the distance difference layout design, it is known that the second alternative provides a better solution with the largest distance difference of 41.52 for space with condition should be close and the distance difference of -31.21 for space with the condition should not be close. Keyword: feed laboratory layout, feedlot industry, computherized relationship layout planning

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Tim Editor Journal of Science and Applicative Technology

Contact Email journal@itera.ac.id

Phone +62721-8030189

Journal Mail Official journal@itera.ac.id

Editorial Address Lembaga Penelitian dan Pengabdian Masyarakat, ITERA Gedung D, Institut Teknologi Sumatera, Jalan Terusan Ryacudu Street, Way Hui Jati Agung Lampung Selatan 35365

Location Kab. lampung selatan, Lampung INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Tim Editor Journal of Science and Applicative Technology

Contact Email
journal@itera.ac.id

Phone
+62721-8030189

Journal Mail Official
journal@itera.ac.id

Editorial Address
Lembaga Penelitian dan Pengabdian Masyarakat, ITERA Gedung D, Institut Teknologi Sumatera, Jalan Terusan Ryacudu Street, Way Hui Jati Agung Lampung Selatan 35365

Location
Kab. lampung selatan,

Lampung

INDONESIA