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Journal of Science and Applicative Technology
Published by Institut Teknologi Sumatera
ISSN : 25810545     EISSN : 25810545     DOI : -
Core Subject : Science, Engineering,
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
Arjuna Subject : -
Articles 228 Documents
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Analisis Keputusan Multi Kriteria dalam Penentuan Rute Optimum sebagai Jalur Darurat dan Evakuasi Kebakaran Hutan di Taman Nasional Gunung Merbabu Adnin Musadri Asbi; Diyanti Isnani Siregar
Journal of Science and Applicative Technology Vol 5 No 2 (2021): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i2.269

Abstract

Penelitian ini mengombinasikan pendekatan Analisis Keputusan Multi Kriteria dan Sistem Geografis Informasi dalam menentukan rute yang paling optimum sebagai jalur darurat dan evakuasi pada saat terjadi kebakaran hutan. Kawasan hutan di Taman Nasional Gunung Merbabu yang rawan terhadap kebakaran dipilih sebagai wilayah studi kasus. Penelitian ini dilakukan dalam 4 tahapan yaitu analisis multi kriteria (tutupan lahan, kelerengan, dan jarak dari jalur), analsis daerah rawan kebakaran hutan, analisis rute alternatif menggunakan Least-Cost Path, evaluasi multi kriteria, dan analisis keputusan multi kriteria untuk menentukan rute optimum sebagai jalur darurat dan evakuasi kebakaran hutan. Hasil penelitian menemukan bahwa terdapat dua rute yang optimum untuk keadaan darurat (Rute Selo dan Alternatif 1) dan tiga rute dipilih sebagai rute evakuasi yang paling optimum (rute Cuntel, Wekas dan Alternatif 4).
Potensi Geodiversity di Sekitar Kawasan Anak Krakatau-Way Kambas, Provinsi Lampung, Sebagai Kandidat Geopark Indonesia Happy Christin Natalia; Danni Gathot Harbowo; Rinaldi Ikhram
Journal of Science and Applicative Technology Vol 5 No 1 (2021): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i1.318

Abstract

The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best potential areas to be developed as part of a world heritage, particularly as UNESCO Global Geopark. Both of these objects are in the Lampung Province, Indonesia. Soon, it is necessary to identify and make an inventory of key sites that could become the theme of the area. The study of geodiversity and scientific valuation was carried out which referred to the Technical Guidelines for the Assessment of Indonesia Geological Heritage Resources, 2019. Based on these studies and assessments, there are 14 key sites to represent for Geopark Krakatau-Way Kambas themes. These sites are closely related to the evolution of tectonic activity in the Southern Sumatera as well as the dynamics of magmatism and paleovolcanism that have occurred since the Mesozoic which has signification in human history as world heritage.
Distribusi spasial kualitas perairan dan hubungannya dengan aktifitas budidaya perikanan di Teluk Lampung Budhi Agung Prasetyo; Muawanah Muawanah; Lutfi Mardianto; Muhammad Zainuddin Lubis
Journal of Science and Applicative Technology Vol 6 No 1 (2022): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v6i1.897

Abstract

Coastal water is water areas that receive much input of organic matter originating from human activities on land. Anthropogenic activities such as marine aquaculture in Teluk Lampung impact water quality on that waters. This study was conducted to determine the distribution of water quality around Teluk Lampung and its correlations to marine aquaculture activities. The analysis carried out in this study is spatial analysis to determine the spatial distribution of water quality in three focus area, namely Teluk Hurun (HB), Selatan Teluk Hurun (SHB) dan Pantai Sari Ringgung (SRB) as part of Teluk Lampung. In addition to spatial analysis, principal component analysis (PCA) was also carried out to determine water quality as a variable and its correlation to each area. Based on the results of this study, the spatial distribution of water quality varies based on the human activities type in each area. Based on the results of principal component analysis, it is known that the variability of several water quality variables also correlates with the human activities types, such as marine aquaculture and beach tourism.
Pengaruh Temperatur, Komposisi Bahan Cangkang Inti Kelapa Sawit dan Konsentrasi Perekat pada Karakteristik Briket Komersial dari Tempurung Kelapa Sawit Guna Bangun Persada; Putty Yunesti
Journal of Science and Applicative Technology Vol 4 No 2 (2020): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v4i2.268

Abstract

Briquettes are an essential product for metal mineral processing plants in Indonesia. One good alternative raw materials for briquettes that do not pollute the environment is the palm kernel shell. This research was conducted by making briquettes from palm kernel shells to find optimal variations in carbonization temperature, material mixture, and adhesive mixture. The research was conducted on a laboratory scale. The palm kernel shell and coal kernel were carbonized at various temperatures, namely 450°C, 550°C, and 650°C, then crushed and sieved to 35 mesh. The powdered palm kernel shell and coal that have become powdered charcoal are weighted based on a mixture of powder and the adhesive composition ratio of 40 g. After that, the briquettes were formed under a pressure of 100 kg/cm² on a cylindrical mold with 40 mm. The analyzes carried out were moisture content, ash content, volatile substances content, fixed carbon content, calorific value, compressive strength, density, porosity, and SEM (Scanning Electron Microscope). The results showed that the briquette from the kernel of the palm kernel shell was optimal at a temperature of 550 ° C with a starch adhesive mixture of 7.5%, a pressure of 100 kg/cm², moisture content of 5.34%, an ash content of 5.81%, a substance content. Volatile amounted to 18.77%, 71.08% for fixed carbon, heating value 7125.86 cal/g. Density of 0.78, porosity of 0.04 and strength of 72.56 kg / cm².
Respons Pertumbuhan Anthocephalus cadamba (Roxb.) Miq. terhadap Penambahan Pupuk Kandang dan Arang Bambu di Kebun Raya Institut Teknologi Sumatera Faradila Mei Jayani; Arief Juniarto
Journal of Science and Applicative Technology Vol 5 No 2 (2021): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i2.270

Abstract

The loss of biodiversity in Indonesia is triggered by a decline in forest area. Institut Teknologi Sumatera (ITERA) in collaboration with the Indonesian Institute of Sciences (LIPI) conducts the development of the ITERA Botanical Gardens having an important role as the ex-situ conservation of flora. Reforestation activities are carried out to support the vegetation development in the botanical garden. This activity have to concern in fertilizer needs and soil ameliorant, especially in soil characteristic of ITERA botanical garden. The aim of this research is to analyze combinations of manure and bamboo biochar having the abitily to increase optimal growth of Anthocephalus cadamba (Roxb.) Miq. in ITERA Botanical Garden. The experimental design used in this research was Completely Randomized Design. The addition of manure and bamboo biochar increased height, diameter, and number of leaves of A. cadamba. The addition of 3 kg manure and 100 g bamboo biochar (B3) was the best treatment to increased height, diameter, and number of leaves of A. cadamba during 12 weeks of observation.
Potassium Cyanide (KCN) Content in Coral Reefs and Its Effect on The Abundance of Indicator-Fishes in The Anambas Islands Rizki Dimas Permana; Sunarto Sunarto; Syawalludin Alisyahbana Harahap; Indah Riyantini; Yuwanda Ilham
Journal of Science and Applicative Technology Vol 5 No 1 (2021): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i1.381

Abstract

The coral reef ecosystem has been continuously degraded in various parts of Indonesia, including the Anambas Islands. This research aimed to discover the content of Potassium Cyanide (KCN) accumulated on corals and the effect on indicator fishes abundance in the Anambas Islands. This research was conducted at 25 observation stations in the Anambas Islands National Marine Protected Area. The potassium cyanide (KCN) content was tested with the principle of titration and distillation. The coral samples used ranged from 10-20 g diluted in 100-200 ml distilled water. The method used to determine the abundance of indicator fish was underwater visual census or UVC, which recorded fish in every station. This research recorded 307 fish individuals from 14 species of the Chaetodontidae family. Potassium Cyanide's content on corals was high ranging from 0,009-0,032 mg/L with an average 0,0205 mg/L. We concluded that there was a negative correlation between the content of Potassium Cyanide (KCN) on corals and indicator fishes abundance, which means the higher the Potassium Cyanide content (KCN) is on corals, the lower the indicator fishes abundance will point out.
Karakterisasi Fisik, Kimia, dan Sensoris Saus Sambal Mangga Kweni (Mangifera odorata Griff) dengan Variasi Konsentrasi Asam Sitrat dan Durasi Sterilisasi Vita Fitriani; Hesti Ayuningtyas; Dea Tio Mareta; Lasuardi Permana; Amalia Wahyuningtyas
Journal of Science and Applicative Technology Vol 5 No 1 (2021): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i1.404

Abstract

Mangga kweni (Mangifera odorata Griff) merupakan salah satu jenis mangga yang cukup banyak dibudidayakan oleh masyarakat dan banyak dimafaatkan dalam pembuatan sambal, khususnya di daerah Lampung dan Palembang. penelitian ini bertujuan untuk mengembangkan produk saus sambal kweni instan dengan penambahan asam sitrat dan perlakuan sterilisasi. Variasi konsentrasi asam sitrat dalam penelitian ini adalah 0%, 0,1%, 0,3%, dan 0,5%, dengan durasi sterilisasi 20 menit dan 35 menit. Pengujian yang dilakukan terhadap saus sambal kweni berupa analisis sifat fisik, kimia, dan sensoris. Hasil penelitian menunjukkan bahwa variasi pemberian asam sitrat dan lama sterilisasi berpengaruh signifikan (p<0,05) terhadap kadar air, nilai pH, viskositas dan warna. hasil analisis sensoris berdasar uji tingkat kesukaan (hedonik), menunjukkan tidak ada perbedaan yang signifikan antar sampel, namun secara keseluruhan atribut (overall), sampel D yang disterilisasi 35 menit adalah yang paling disukai panelis.
UJI AKTIVITAS EKSTRAK BUNGA KECOMBRANG (Etlingera elatior Jack) SEBAGAI HIPOLIPIDEMIA PADA TIKUS WISTAR OBESITAS Sri Wardani; Ni Wayan Bogoriani; Ni Luh Rustini
Journal of Science and Applicative Technology Vol 6 No 2 (2022): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v6i2.1000

Abstract

Kecombrang (Etlingera elatior Jack) is a plant that has potential for hypolipidemia. Kecombrang has secondary metabolites consisting of tannins, saponins, alkaloids, steroids, terpenoids, phenolics, and flavonoids. The purpose of this study was to determine the hypolipidemic activity of kecombrang flower methanol extract in obesed Wistar rats fed a high-fat diet. The test animals used in this study were 18 female white rats aged two months, weight of ± 150 grams. The test animals were divided into three groups, namely normal control (only given standard feed), high-fat control (obesed rats with high-fat diet), and flower treatment group (obesed rats with a high-fat diet + flower methanol extract 100 mg/kgBW) orally for 30 days. The results showed that kecombrang flowers reduced total cholesterol levels by 55.5%, triglycerides (TG) by 57.4%, LDL by 76.73%, and increased HDL by 42.96%. The kecombrang flower has the potential for hypolipidemia which is characterized by a decrease in total cholesterol, TG, LDL, and can increase HDL levels in obese rats significantly (p<0.05).
Pengaruh Liquid Hold-Up terhadap Transisi Pola Aliran 2 Fasa Air-Udara dari Stratified Ke Slug pada Pipa 50 mm Andinusa Rahmandhika; Ali Saifullah; Pathur Razi Ansyah; Ali Mokhtar
Journal of Science and Applicative Technology Vol 4 No 2 (2020): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v4i2.279

Abstract

The slug flow pattern is one of the most avoiding factors in piping systems due to its destructive characteristics. Research on the criteria of the slug formation is still the concern. The present study focused on finding out the influence of liquid hold-up toward the transition of the flow pattern from stratified to slug pattern. It was conducted on a 50 mm-diameter horizontal acrylic pipe. The visual data was obtained from a fully developed area (180-210 D) by variations of liquid superficial rate (JL) of 0,03-0,3 m/s and gas superficial rate (JG) from 0,7 to 3,77 m/s. The high-speed camera with 2000 fps recording speed was the instrument to obtain the visual data. The measurement of the liquid hold-up is made by Constant Electric Current Method (CECM). The drastic decrement of liquid hold-up value on the wave growth mechanism (JG ≤ 1,88 m/s) indicated the changes in flow patterns from the stratified to the slug pattern, while on the wave coalescence mechanism (JG > 1,88 m/s) the liquid hold-up remains increases. The pattern change from pseudo slug to the slug pattern was not decreasing on its film thickness, yet, it tends to increase the frequency and the liquid slug length.
Pengaruh Preparasi Ubi Kayu dengan Metode Bahan Baku Langsung dan Tidak Langsung terhadap Produksi Bioetanol Khoirun Naimah; Muhammad Rizky Zen
Journal of Science and Applicative Technology Vol 5 No 2 (2021): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i2.428

Abstract

Dalam penelitian ini, pengaruh metode langsung dan tak langsung pada bahan baku ubi kayu terhadap kuantitas dan kualitas produk bioetanol telah dipelajari. Pengukuran terhadap volume produk, pH, dan Indeks bias dari produk juga telah dilakukan untuk mengetahui karakteristik dari produk bioetanol. Dari 1000 gram ubi kayu, volume bioetanol yang dihasilkan dengan metode bahan baku langsung adalah 19 mL, sedangkan untuk metode tak langsung adalah 3 mL, kemudian untuk nilai pH, kedua metode menunjukkan hasil yang sama yaitu 6. Untuk nilai indeks bias pada produk bioetanol dengan metode langsung dan tak langsung adalah 1,3421 dan 1,337. Pada penelitian ini dapat disimpulkan bahwa preparasi ubi kayu dengan metode bahan baku langsung dalam produksi bioetanol lebih baik dibandingkan dengan metode tidak langsung dari segi jumlah bioetanol yang dihasilkan.

Page 18 of 23 | Total Record : 228

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