Journal of Science and Applicative Technology
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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<![CDATA[UJI POTENSI Bacillus sp. DAN Escherichia coli DALAM MENGHASILKAN INDOLE ACETIC ACID (IAA) TANPA MENGGUNAKAN TRIPTOFAN PADA MEDIA PERTUMBUHAN ]]>
<![CDATA[Muhammad Asril]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281434
<![CDATA[Indole Acetic Acid (IAA) is the important phytohormone for boosting plant-growth promotion. It is related with amino acid tryptophan as a precursor for building IAA. However some bacteria such as Bacillus sp. and Escherichia coli enable to produce IAA without L-tryptophan on culture medium via the tryptophan independent pathways. This study aims to determine the potential of indigenous Bacillus sp. and E. coli isolate in producing IAA via Trp-independent pathways (without L- tryptophan). The stage of this study consists of growing of isolate on liquid media without tryptophan and measuring the levels of IAA using Salkowsky method. Bacillus sp and Escherichia coli could produce IAA with the concentration of 0,0236 mmol/L and 0,024 mmol/L, respectively. The concentration of IAA produced by these bacteria is quite low because of their ability to synthesis IAA from the independent tryptophan pathway. The independent tryptophan pathway means these bacteria could synthesize IAA without using tryptophan as a precursor on their growth medium.]]>
<![CDATA[KARAKTERISKTIK BACKSCATTER CITRA ALOS PALSAR POLARISASI HH DAN HV TERHADAP PARAMETER BIOFISIK HUTAN DI SEBAGIAN TAMAN NASIONAL KERINCI SEBLAT ]]>
<![CDATA[nirmawana Simarmata]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281441
<![CDATA[Synthetic Aperture Radar (SAR) is one kind of an active remote sensing system, utilizing microwave to records the earth surface. One of the SAR’s satellites is ALOS PALSAR which is capable of penetrating clouds so that the underlying objects can be identified. ALOS PALSAR has a polarization system operating with single beam polarization (HH or HV), dual polarization (HH + HV or VV + VH) and full polarization (HH + HV + VH + VV). This study aims to use the backscatter value of ALOS PALSAR's image for monitoring and mapping the forest. The Utilization of ALOS PALSAR imagery to measure forest biophysical parameters and saturation levels identified based on backscatter sensitivity. Image extraction is done through image calibration where the digital value is converted to sigma naught backscatter value then the result of calibration unit is changed to decibels. Backscatter sensitivity depends on forest structure which can affect scattering mechanism. The backscatter value is also influenced by humidity and weather dynamics which can also affect the dielectric constant. The result of accurate classification of land use polarization fall in HH accuracy of 62,4%. Whereas for HV polarization accuracy obtained equal to 74,88%.]]>
<![CDATA[Energi Terbaharukan dan Peningkatan Ekonomi: Pengolahan Kotoran Sapi Berlapis, Desa Cibodas ]]>
<![CDATA[Hendro Muliarto]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281444
<![CDATA[Perdebatan tentang praktik pengelolaan limbah telah menjadi isu sangat penting, aktivitas manusia yang telah melebihi beban kapasitas asimilatif biosfer menjadi penyebabnya. Dewasa ini limbah direkomendasikan untuk di daur ulang dan dijadikan objek pemulihan energi. Pada prinsipnya limbah memerlukan pengelolaan agar tidak membahayakan lingkungan berbeda dengan produk samping yang masih bisa dimanfaatkan. Produk samping seperti kotoran sapi atau sisa bahan organik bisa dijadikan sumber energi, biogas. Namun biogas sendiri juga mengeluarkan produk samping berupa biosulry. Di Desa Cibodas terjadi pengolahan kotoran sapi berlapis dengan skema biogas dan pupuk biosulry. Pengolahan kotoran sapi berlapis ini memberikan banyak keuntungan untuk masyarakat Desa Cibodas, selain sumber energi baru juga menghasilkan sumber pendapatan baru bagi masyarakat.]]>
<![CDATA[PERBANDINGAN TOTAL RENDEMEN DAN SKRINING ANTIBAKTERI EKSTRAK ETANOL DAUN SIRIH HIJAU (Piper betle L.) SECARA MIKRODILUSI ]]>
<![CDATA[rissa laila vifta]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281450
<![CDATA[The optimization of extraction procces for Sirih Hijau leaves (Piper betle L.) have been attempted. The aim of the research was to knowing the influence and the ratio of total yield on two different methods, that was using maceration and reflux method and followed by microbial antibacterial by microdilution test to show the qualitative value of MIC percentage of Sirih Hijau leaves extract against Escherichia coli and Staphylococcus aureus bacteria. The analysis was conducted descriptively for subsequent use as a basis to determined MIC percentage quantitatively. The result of extraction with two methods showed that the highest yield was yielded in reflux process with 18.5% rendement value with the weight ratio of 1: 5 to the maceration process. Phytochemical screening shows the ethanol extract of Sirih Hijau leaves contains flavonoid, saponins, and tannins compounds that have activated as antibacterial. The results of microbial antibacterial testing showed MIC percentage in Staphylococcus aureus at 5% and Eschericia coli at 3%. The test results indicate that Sirih HIjau leaves (Piper betle L.) have potential as an antibacterial candidate. Keyword : Sirih Hijau, reflux, maceration, antibacterial, microdilution]]>
<![CDATA[IDENTIFIKASI DEKSAMETASON DALAM JAMU PEGAL LINU SEDIAAN SERBUK YANG BEREDAR DI PASAR-PASAR KOTA BANDAR LAMPUNG SECARA KROMATOGRAFI LAPIS TIPIS ]]>
<![CDATA[Sudewi Mukaromah Khoirunnisa]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281467
<![CDATA[A total of 26.6% of the population in Lampung Province consume traditional medicine, one of which is Jamu Pegal Linu. However, a large public interest in herbal products is often misused by herbal manufacturers that it is possible to add BKO (Medicinal Chemicals), such as dexamethasone.The purpose of this study is to identify the presence or absence of dexamethasone in the preparation of Jamu Pegal Linu. The samples are taken from the store and depot herbs contained in the Markets of Bandar Lampung, acquired three different brands. The method used is Thin Layer Chromatography using dikloretan motion: diethyl ether: methanol: water (77:15: 8: 1,2) as a mobile phase which are non-polar, and silica gel GF 254nm as a stationary phase. The result showed that the detection of three samples of Jamu Pegal Linu contained staining purple and the difference of Rf sample with reference standard on the first repetition is 0.46, 0.44, 0.47, and on the second repetition is 0.45, 0.45 and 0.48, which are ≥ 0.05. It can be concluded that the sample of Jamu Pegal Linu in Bandar Lampung 0% containing dexamethasone.]]>
<![CDATA[Skenario konsekuensi analisis pengangkutan LNG Semarang-Yogyakarta dengan simulasi ALOHA ]]>
<![CDATA[Didik Supriyadi]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281478
<![CDATA[Liquefied Natural Gas (LNG) is one of the potential alternative fuels to replace conventional fuels. Using LNG as fuel in Indonesia especially Yogyakarta will give many advantages, for instance, reduced greenhouse gas emissions so that eco-city in Yogyakarta can be realized. Although LNG has many advantages, LNG still contains many hazards whether during storage or distribution, the major hazard is radiant heat. This study aims to analyze and simulate hazard scenarios when transporting LNG such as fire pools, fireballs and vapor clouds and establishing exclusion zone by Areal Location of Hazardous Atmospheres (ALOHA) simulation. This study assumes that the diameter of the tank leak is 1 in and 3 in. The simulation results the exclusion zone from pool fire’s heat radiation from 1 in and 3 in leaks are more than 14 m and 39 m. While the safe distance of the fireball is 799 m. While in the distance vapor clouds that have a possibility of fire for the diameter leakage of 1 and 3 in are 21 m and 59 m.]]>
<![CDATA[STUDI SISTEM INJEKSI INHIBITOR KOROSI TERHADAP KANDUNGAN ORTHOFOSFAT DAN SENG SEBAGAI PARAMETER KENDALI KOROSI PADA SISTEM PENDINGIN SEKUNDER RSG-GAS ]]>
<![CDATA[Edwin Rizki Safitra]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281485
<![CDATA[Reaktor Serba Guna G.A Siwabessy (RSG-GAS) was built since 1983. RSG-GAS is a type of research reactor equipped with heat carrier and cooling system which serves to remove heat arising from fission reactions. In the heat carrier medium, the reactor equipped with a secondary cooling system using water originating from PAM Puspiptek. Water used in secondary cooling systems can cause some major problems of crust, corrosion, and moss or microorganisms. In this research, the phosphorus (orthophosphate), zinc, and conductivity and pH in the secondary cooling system have been measured to determine whether or not the flow rate of the injection system is used. Determination of concentration of the elements was performed using a DR / 2400 spectrophotometer portable device with ZincoVer 5 Powder Pillow reagent, cyclohexane for zinc concentration, and PhosVer 3 phophate for phosphorus concentration. From the results obtained, the overall flow rate of injector injection of 1.7 L / h gives a good result. Significant differences occurred only in conductivity values ​​dated July 21, 2009 both in piped water and cooling towers exceeding 950 μs / cm. And the value of orthophosphate concentration dated August 4, 2009 that exceeds 10 ppm.]]>
<![CDATA[PEMBANGUNAN SISTEM PAKAR UNTUK DIAGNOSIS PENYAKIT TULANG DAN SENDI ]]>
<![CDATA[Hafiz Budi Firmansyah]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281487
<![CDATA[Abstract—In Indonesia the numbers of orthopaedic surgeons are still not able to cover all demand. Badan Pusat Statistik (2015) reported that there are merely two orthopaedic surgeons in Lampung province having to serve about 8.117.268 people. Meanwhile, based on Ministry of Health of Republic of Indonesia, the ideal ratio between doctor and people is 12.2 doctor for each 100.000 people. Besides that, sometimes the surgeons need to serve more than one medical facility. Consequently, the patients might feel unpleasant. The lack of human resources becomes the main reason for developing expert system for diagnosing orthopaedic diseases. The expert system is able to diagnose orthopaedic diseases as well as fracture, dislocation, osteoarthritis and osteoporosis. The system is developed by using forward chaining methodology. This methodology is suitable for identifying a disease based on their symptoms. The result shows that the expert can answer 45 % of questions by identifying 6 main symptoms without continuing to following symptom questions.]]>
<![CDATA[A Studi Awal Potensi Energi Surya Wilayah Lampung ]]>
<![CDATA[Kiki Kananda]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281417
<![CDATA[Energy surya yang merupakan salah satu sumber energy terbarukan yang dapat dijadikan sebagai alternatif yang fleksibel digunakan untuk penyediaan listrik di Indonesia. Daerah Lampung memiliki potensi energi surya rata-rata 4,43 kWh/m2/hari dengan variasi bulanan sekitar 7 persen. Lampung juga dinyatakan cocok untuk aplikasi teknologi energi surya fotovoltaik karena memiliki karakteristik komponen radiasi langsung yang lebih dominan daripada komponen radiasi baurnya. Institut Teknologi Sumatra (ITERA) dalam perkembangannya sangat membutuhkan peningkatan pasokan energi listrik setiap tahunnya. Sehingga perlu lirikan akan energi lain sebagai dukungan dalam mewujudkan forest kampus dan pemenuhan energi. Untuk mengetahui potensi energy surya di lingkungan ITERA, maka dilakukanlah study awal energy surya yang dapat diproduksi. Tujuannya adalah agar didapat informasi potensi yang real untuk perkiraan pengembangan energy surya di lingkungan Institut. Pengukuran potensi ini menggunakan rangkaian panel surya yang disambung ke beban Resistor dan lampu yang diatur maksimum. Kemudian dihitung nilai Daya yang didapat dari pengukuran arus dan tegangannya. Dari hasil pengukuran diperoleh bahwa intensitas sinar matahari tinggi terjadi pada pukul 09.00-15.00 dengan daya luaran mencapai 109W.]]>
<![CDATA[ANALISIS POTENSI ENERGI DAN PENGURANGAN EMISI CO2 DENGAN PENGELOLAAN LIMBAH PETERNAKAN SAPI RAKYAT DI KECAMATAN JATI AGUNG KABUPATEN LAMPUNG SELATAN ]]>
<![CDATA[Rinda Gusvita]]>;
<![CDATA[Dian Fajarika]]>;
<![CDATA[Mika Margareta]]>;
<![CDATA[Devia Gahana CA]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 1 No 2 (2017): Journal of Science and Applicative Technology December Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281424
<![CDATA[Management of feedlot manure is becoming a larger responsibility as more regulations are imposed to protect water, both surface and groundwater, from manure contamination. Instead of using the manure for compost, feedlot owners can capture methane from the decomposing manure (and turn that into electricity or heat), or use the waste to produce liquid fuel. Biogas may also be called renewable natural gas because biogas can be used as a fuel source to produce electricity and heat like natural gas.This research converting energy generated from the measurement of total waste theoretically to be convert to electricity generated from the waste. Within the number of 19,398 total cows in Jati Agung Sub District husbandry has the potential to produce electric energy of 149,365.376 kwh per day or 15,836.79 mwh per year. The conversion from waste to electricity will reduce the number of total emission of 64,086.7464 tCO2 per year.]]>
