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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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Karakteristik dan Aplikasi Selulosa Kulit Jagung Pada Pengembangan Hidrogel Lucky Wahyu Nuzulia Setyaningsih; Tintin Mutiara; Clara Yusticia Hapsari; Nabila Kusumaningtyas; Haris Munandar; Romy Jefry Pranata
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.v4i2.252

Abstract

Corn is one of the staple food crops widely consumed by Indonesians, thus has potensial in producing an abundant amount of corn husk waste. Cellulose contained in corn husk is about 44%, so the material has the potential to be source of natural fiber cellulose. The development of hydrogels from natural polymers such as cellulose is very promising especially for biomaterial application. Cellulose fiber was obtained through several stages: dewaxing, pulping, delignification, bleaching and cellulose purification. This study aimed to determine the most effective solvent in cellulose extraction of corn husk, the research carried out with different solvent such as, hydrogen peroxide (H2O2), sodium hypochlorite (NaOCl) and hydrocloric acid (HCl). Based on the functional group formed on the analysis of FTIR, shows that the extraction method using H2O2 as solvent can remove hemicellulose and lignin from the cellulose structure and the most white cellulose fiber obtained from the extraction with H2O2 solvent. Cellulose obtained from previous step was used for hydrogel production. The hydrogel showed different absorption capacity depend on temperature and ratio of glutaraldehide to cellulose. The highest water absorption capacity of 250% obtained by hidrogel with ratio 1:2 at 25oC.
Study of Thermoelectric Generator Utilization to Recover Heat at Low Temperature Grade Application: A Review Rihardian Maulana Wicaksono; Putty Yunesti
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.v5i2.430

Abstract

Generally, the supply of heat energy is abundant in this world especially from direct solar radiation or combustion process activity. However, this energy is mostly wasted and discharged to the environment without recovery and re-utilization process. There is a potential utilization this heat to be converted to electricity using thermoelectric generator (TEGs). This technology device has an ability to convert heat to electricity by difference temperature from both surfaces. This device could prevent thermal loss to environment and optimize the system to generate electricity for small and micro scale power generation. This research conducts a literature review about identifying several potential object application or equipment as heat sources from solar energy or combustion activity combine with thermoelectric generator at low grade temperature that has been worked by previous researcher for past 5 years. Current status and working principal of thermoelectric generator is presented briefly. Several parameters such as working temperature range, potential output power, and efficiency system are described and presented. Then, some implementation challenge and opportunity development combination TEGs with each object applications are discussed and analyzed to produce recommendation for further research
Efek Biokonversi Pulp Kakao menjadi Bioetanol Sebagai Sumber Energi Alternatif melalui Fermentasi Aspergillus niger dan Saccharomyces cerevisiae dalam Fermentor Wadah Plastik dan Stainless Steel Desi Riana Saputri; Fenzy Putri Liewenti; Stanislaus Dimas Indra
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.v5i1.377

Abstract

Cocoa beans from Indonesian farmers are not optimal to utilize dan has low quality because they have not done fermentation processing. The aim of this study was to process cocoa beans through fermentation by using Aspergillus niger and Saccharomyces cerevisiae by developing cocoa-pulp byproduct that can be converted to be alcohol. Fermentation process had done in two type of containers such as plastic and stainless steel material. It was observed to know the presence of olygodinamic effect from stainless steel material. The results showed that cacao pulp can be fermented by using Aspergillus niger and Saccharomyces cerevisiae in sensory test method with hyphae growth and strong aromatic from alcohol observation. Stainless steel material in fermentor tub did not give the oligodynamic effect for Aspergillus niger fungus and Saccharomyces cerevisiae growth. The Fermentation process produced 0.66 mL of alcohol from one kilogram fresh cocoa beans. The maximum bioethanol product is that happened in 4th day fermentation process about 5.30 %.
Pendidikan dan Penelitian Kehutanan di Berbagai Belahan Dunia: Sebuah Tinjauan Literatur Iwan Maryawan; Auliana Rochsas
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.v6i1.416

Abstract

This paper compiles research from various journals on forestry education and forestry research from various countries on different continents. The method used is a literature review by finding, analyzing, classifying, and concluding data from various accredited national and international journals indexed by Scopus and other references that support the locus of forestry education and training in native and artificial forests. The approach of each country in conducting forestry education and forestry research is adjusted to the policy, climate and budget availability. The challenges and management strategies carried out are also adapted to human resources, natural resources, educational curricula and the availability of budgets and policies of each country. The education curriculum is part of the challenge that is of particular concern because education plays a role in changing the citizen's paradigm of forest management.
Pengaruh Usia Tanaman Karet Terhadap Analisa Diagnosa Lateks pada Klon RRIM 921 Feerzet Achmad; Amna Citra Farhani; Pramahadi Febriyanto; Jerry Jerry
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.v5i1.371

Abstract

Kandungan sukrosa, kandungan fosfat anorganik (Pi) dan kandungan thiol merupakan analisa diagnosa lateks yang berkaitan dengan kemampuan tanaman karet dalam pembentukan lateks. Penelitian ini bertujuan untuk melihat pengaruh usia tanaman karet terhadap analisa diagnosa lateks pada klon RRIM 921 pada usia tanaman karet dari usia 5 tahun sampai 24 tahun. Panel sistem sadap tanaman karet terdiri dari panel sistem sadap sorong (BO) pada usia tanaman 5 tahun sampai 12 tahun sedangkan panel sistem sadap tarik (HO) pada usia tanaman dari 16 tahun hingga 24 tahun (satu siklus tanaman karet). Potensi dan produktivitas latex dari tanaman karet tertinggi diperoleh sebanyak 4,8 kg/pohon dan 2401 kg/ha/tahun pada usia tanaman 15 tahun dengan panel sistem sadap HO1. Kandungan sukrosa maksimum diperoleh sebesar 9,9mM pada usia tanaman 15 tahun dengan panel sistem sadap HO1. Kandungan Pi tertinggi sebesar 26.5mM diperoleh pada usia tanaman karet 9 tahun dengan panel sistem sadap BO2. Kandungan thiol paling tinggi sekitar 0,98mM diperoleh pada usia tanaman karet 7 tahun dengan sistem panel sadap BO1.3. Selanjutnya maksimum DRC diperoleh sebesar 46,8% pada usia tanaman karet 14-16 tahun dengan panel sistem HO1 dan HO2.
Classification of Color Pigments of Robusta Coffee Plants with Mordanting Method Applied to Cloth Masks susi susyanti; Okta Amelia; Muhammad Hajid An Nur; PG. Wisnu Wijaya
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.v5i2.316

Abstract

Part of the coffee plant as a whole from the roots until the fruit can produce dye pigment, the coffee plant that is made sample is Robusta coffee plant (Coffee Robusta). The absence of natural color calcification uses one whole plant. So it is made from coffee plants typical of Lampung as a local identity. The mordanting process of the extract results in the parts of the coffee plant on the French cotton fabric, producing pigments that can be used as dyes for textiles. This method is easy to classify the pigment from the parts of the coffee plant. Classifications of colors obtained from warm, soft, and cold color ranges (casual, beautiful, Natural, beautiful, romantic, elegant, classic, clear and cool casual). This research was conducted to classify various colors of Robusta coffee plants, roots, wood, bark, ranting, wet leaves, dried leaves, wet skin, wet bark, dry hard skin, wet seeds, dried seeds, and grain powders with The mordanting process is transferred on the cloth. From the results of the experiment, excellent color absorption resulted from wet fruit skin with a tendency towards warm colors and applied to the mask as an example of the product by means of a brush so that not much wasted color content. way in brushes and applications on this mask is an effort to respond to environmental issues and new normal.
Isolasi Nanoselulosa Terkarboksilasi dari Limbah Kulit Pisang Ambon Lumut dengan Metode Oksidasi Ashari Budi Nugraha; Ahmad Nuruddin; Bambang Sunendar
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.v5i1.413

Abstract

In this study, banana peel from ambon lumut (Musa acuminata) was used as source for nanocellulose fibers. Carboxylated nanocellulose was isolated with oxidation method using ammonium persulfate (APS). In order to investigate the effect of temperature towards the characteristics of nonocellulose, temperature for oxidation process was set at three different values: 60 °C, 70 °C, dan 80 °C. Nanostructure of cellulose was observed as a mix of fibers and whiskers from transmission electron microscopy (TEM) images. The diameter of nanocellulose is ranging from 12,1 to 25,1 nm. Data from spectrometry graphs (FTIR) confirms the existence of carboxyl functional groups in nanocellulose samples. X-ray diffraction pattern (XRD) shows that crystallinity index values increase as temperature of oxidation process increases. The highest crytallinity index value of 72,4% was obtained from nanocellulose treated with oxidation temperature of 80 °C. This analysis shows banana peel waste as a potential alternative source for carboxylated nanocellulose.
Simulasi Energi dan Keekonomian Sistem Pembangkit Listrik Tenaga Surya (PLTS) untuk Fungsi Peak Load Shaving pada Bangunan di Lingkungan Kampus ITB Irsyad Nashirul Haq; Justin Pradipta; Muhamad Riezar Satria Sheba; Alief Widjoseno Damar Persada; F.X. Nugroho Soelami; Edi Leksono
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.v5i1.449

Abstract

Pada paper ini, dilakukan simulasi produksi energi dan keekonomian dari sistem PLTS terintegrasi dengan jaringan listrik yang merupakan bagian dari proyek instalasi sistem smart microgrid di bangunan Center for Advanced Sciences (CAS) ITB. Terdapat dua sistem PLTS yang dianalisis yaitu sistem PLTS 40 kWp tanpa baterai, dan sistem PLTS 10 kWp dengan baterai yang terhubung ke beban kritis. Kedua sistem PLTS tersebut dirancang dengan tujuan peak load shaving yang dapat meminimalisir adanya ketidakseimbangan antara produksi energi surya dan permintaan listrik. Kedua sistem dianalisis dengan metoda simulasi berdasarkan aspek energi dan ekonomi menggunakan perangkat lunak PVsyst dan Homer. Dari hasil simulasi sistem PLTS 40 kWp didapatkan nilai performance ratio (PR) sebesar 0,833, renewable fraction (RF) sebesar 18,73%, dan cost of energy (COE) sebesar Rp 1.251,85/kWh yang mana nilai PR dan COE telah memenuhi target bisnis: PR > 0.8 dan COE < Rp 1.467,28/kWh tetapi tidak memenuhi target RF > 35%. Sementara dari hasil simulasi sistem PLTS 10 kWp didapatkan nilai PR sebesar 0,77, RF sebesar 44,38% hingga 52,19% pada rentang depth of discharge 20% - 80%, dan COE sebesar Rp 2.103/kWh hingga Rp 6.315/kWh pada rentang DoD 20% - 80% yang mana hanya nilai RF telah memenuhi target bisnis.
Identifikasi Struktur Geologi dan Petrografi di sekitar Observatorium Astronomi Lampung Gunung Betung Hendra Saputra; Luhut P. Siringorongo; Cahli Suhendi; Lea Kristi Agustina
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.v4i2.265

Abstract

Lampung Astronomical Observatory (LAO) is located on Betung Mountain which is quite close to the Semangko active fault zone. Betung Mountain is part of the Bukit Barisan which is located west of the city of Bandar Lampung. This mountain has an altitude of about 1200 meters above sea level. There are 6 interesting stations. Most of the stations are located on the upper slopes of Betung Mountain. In the Talang Aji area, there are 2 springs. The other 4 stations consist of waterfalls with varying heights: Talang Teluk waterfall (30 m), Talang Rabun waterfall (20 m), Betung waterfall consists of two minor terraced waterfalls with a height of 5 and 10 m respectively, and Kubu Jambu waterfall (12 m). In general, the orientation of the faults of Mt. Betung was northeast-southwest. The faults are also associated with several waterfalls found in the field. From the joint data processing, it can be interpreted that the fault formed on Betung Mountain is normal. The lithology of Betung Mountain is dominated by volcanic deposits in the form of tuffs. In certain rivers, there are outcrops of lava igneous rock in the form of Andesites. Andesite lava in the northern and southern parts of Betung Mountain has different characteristics.
Kajian Sistem Aktivitas pada Ruang Terbuka Publik Tepi Pantai Baron, Gunungkidul Elisabet Nungky Septania; Ahmad Sarwadi; Dyah Titisari Widyastuti
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.v5i1.405

Abstract

Baron Beach is a public space that becomes an icon of Gunungkidul Regency. The conditions of a waterfront that have a river and surrounded by hills also the presence of fishing activities attract visitors. Various kinds of activities that occur in this public open space at the same time with different interests, can cause conflicts between activities even though there are also activities that are in line with each other. This research uses a qualitative descriptive method that compares data to utilized public open space during the research period with existing theories. As the unit of analysis are actors who use public open space and the physical conditions of open space. The purpose of this research is to identify activity patterns in utilizing public open space, so that they can be taken into consideration in planning and designing the Public Open Space of Baron Waterfront.

Page 15 of 23 | Total Record : 228

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