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All Journal JISTECH: Journal of Information Science and Technology Jurnal Natural Indonesian Journal of Chemical Science and Technology Hydrogen: Jurnal Kependidikan Kimia Journal of Comprehensive Science Social, Ecology, Economy for Sustainable development goals Journal
Stepanus, Jamius Bin
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Energy auditing and electricity saving opportunities in BPOM laboratory of manokwari Rehiara, Adelhard; Musa, Asril Yanto; Stepanus, Jamius Bin
Social, Ecology, Economy for Sustainable Development Goals Journal Vol. 1 No. 1: (July) 2023
Publisher : Institute for Advanced Science Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/seesdgj.v1i1.2023.22

Abstract

Energy auditing is a method of increasing energy efficiency. An energy audit is conducted to provide an overview of energy use, analyze the electrical system, and determine potential cost savings. The laboratory of the national food and drug agency (BPOM) in Manokwari has problems with electricity that often cause interruptions, power outages, and expensive bills. Therefore, this research was conducted to audit the energy used in the laboratory of the BPOM of Manokwari, with a building area of 1,484 m2 and an installed power of 105 kVA. In this laboratory building, a diesel generator with capacity of 5 kVA is installed as a backup energy source and the generator has its own installation line. According to the calculation results before auditing, the energy consumption intensity (IKE) value obtained per month is 10.18 kWh. Energy audit through lighting loads and air conditioning systems. Then the recommendation through energy savings for lights and air conditioners is 274.12 kWh/month and 639.32 kWh/month, respectively. Therefore, total savings are 913.44 kWh/month, or about IDR 1,541,886.72/month.
Ekstraksi Alumina dari Limbah Bungkusan Aluminium Sebagai Bahan Paduan Tanah Merah dalam Pembuatan Batu Bata Tahan Api (Fire-Resistant Brick) Sirampun, Alfhons Daniel; Stepanus, Jamius Bin
Jurnal Natural Vol. 21 No. 1 (2025): Jurnal Natural
Publisher : FMIPA Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jn.v21i1.275

Abstract

Pada penelitian ini, telah dilakukan pengujian tahap awal sifat tahan api batu bata yang dibuat dari tanah merah dan alumina (Al2O3) sebagai bahan paduannya. Bahan Al2O3 diperoleh dari ekstraksi limbah bungkusan susu formula, sedangkan tanah merah yang digunakan berasal dari daerah distrik Warmare, Manokwari Barat, Papua Barat. Analisis kandungan tanah merah menggunakan XRF diperoleh komponen utama berturut-turut 39.57%, SiO2, 30,94% Al2O3 dan 23,73% Fe2O3. Proses ekstraksi dilakukan dengan metode gravimetri, melarutkan limbah alumunium dalam larutan HCl 18%, selanjutnya pengendapan Al(OH)3 menggunakan larutan Amoniak 25%. Konversi endapan Al(OH)3 menjadi Al2O3 dengan proses kalsinasi pada suhu 800 °C, hasil analisis XRF terhadap ekstrak yang diperoleh menunjukan 89.1% Al2O3, 3.95% SiO2, 3.06% NA2O dan 1.79% MgO. Batu bata dengan kandungan Al2O3 30% dan 50% menunjukan sifat tahan api setelah dibakar pada suhu 300 °C dan 500 °C karena batu bata tersebut tidak mengalami keretakan.
Exploration of Lipid Content in Sargassum binderi Algae from the North Coast of Manokwari West Papua Stepanus, Jamius Bin; Kolibongso, Duaitd
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 7 No. 1 (2024): JANUARY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i1.56442

Abstract

The aim of this research is to determine the potential of biodiesel from the algae Sargassum binderi from the North Coast of Manokwari by determining the lipid components contained in the algae. Lipid extraction was carried out using the soxhletation method with n-hexane solvent. Lipid percentage was determined via GCMS analysis. The research results obtained 4 lipid components consisting of hexadecanoic acid (palmitic acid), 9,12-hexadecadienoic acid, 9-octadecenoic acid (Z) (oleic acid) and octadecanoic acid (stearic acid) with a percentage of 18.12%, 4.75%, 19.4% and 4.29% respectively. The total percentage of lipid components extracted was 46.56%, almost half of the total extract.
Preliminary Study on the Potential of Red Fruit Pigment (Pandanus conoideus) from West Papua as Dye-Sensitized Solar Cell (DSSC) Stepanus, Jamius Bin; Patiran, Abdul Zaid; Sumarna, Sabir; Islam, Muh. Fajar
Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 6 (2024): December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i6.13441

Abstract

The red fruit (Pandanus conoideus) is an endemic plant from Papua, known for its distinctive color and shape. This fruit is recognized for its bioactive properties, such as antioxidant, anti-inflammatory, and antihyperglycemic effects. Its high pigment content is believed to have potential as a sensitizer in DSSC applications. However, research on this topic remains underexplored. Therefore, the aim of this preliminary study is to investigate the potential of red fruit pigments for DSSC. The characterization of red fruit pigments was conducted through phytochemical screening, FTIR and UV-Vis spectral analysis, as well as literature reviews. Pigment extraction was carried out using maceration without involving drying or grinding processes. Phytochemical screening results revealed that the macerate contains flavonoids, alkaloids, phenolics and terpenoids, compounds commonly used as natural pigments in DSSCs. FTIR analysis showed the presence of functional groups such as carboxyl (-COOH), carbonyl (C=O), and hydroxyl (-OH), which can act as effective anchoring groups when interacting with nanosemiconductor surfaces. Meanwhile, UV-Vis analysis showed absorption peaks in the UV region (wavelength 204–399 nm) and the visible region (wavelength 400–550 nm). Based on literature studies and research findings, it can be concluded that the pigments in red fruit have potential applications as DSSC sensitizers.
Studi Perancangan Pembangkit Listrik Tenaga Surya (PLTS) Rooftop On-Grid di Gedung Rektorat Universitas Papua: Study on Design of Rooftop On-Grid Solar Power Plant at the Rectorate Building of Papua University Workala, Roy Charly; Palintin, Antonius Duma; Stepanus, Jamius Bin
JISTECH: Journal of Information Science and Technology Vol 11 No 2 (2022): Oktober 2022
Publisher : Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jistech.v11i2.115

Abstract

The demand for electrical energy needs is always projected to increase by 2,214 (TWh) in 2050 or an increase of 9 times compared to the previous years of 254.6 TWh, it's just that current energy needs are still dominated by non-renewable energy which has limitations and does not require energy. environmentally friendly. Therefore, renewable and environmentally friendly energy sources are needed. Utilization of solar energy which is converted into electrical energy is a solution to reduce the use of non-renewable energy. The average daily solar radiation in Indonesia is 4.8 kWh/m². The purpose of this research is to design PLTS Rooftop at the Rectorate Building of the Papua University using helioscope software and to analyze the estimation of electrical energy savings. In designing, using 198 Tallmax TSM-PD14 320 Wp solar modules, SMA Sunny Tripower 20000TL-US brand inverter with a capacity of 4 units (20kW) and an AC Combiner Box containing protective equipment. The simulation results show that the highest electricity production was in May at 8,031.50 kWh and the lowest was in February at 5,997.60 kWh. So from the calculation, the estimated average electrical energy savings is 18%
Analisa Losses Energy Pada Konduktor Jaringan Tegangan Menengah Berbasis Kurva Beban PT. PLN (Persero) UP3 Area Manokwari: Analysis of Energy Losses in Medium Voltage Network Conductors Based on Load Curves at PT. PLN (Persero) UP3 Manokwari Area Podajow, Herybertus Rivanaldi; Rehiara, Adelhard Beni; Stepanus, Jamius Bin
JISTECH: Journal of Information Science and Technology Vol 12 No 1 (2023): Vol. 12 No. 1 (2023): April 2023
Publisher : Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jistech.v12i1.210

Abstract

The quality of electricity includes several things, including continuity of distribution, length of blackout time, voltage stability. One of the causes of declining electricity quality is the shrinkage that occurs in the electric power network, network losses cannot be avoided but can be minimized by shortening the network, performing maintenance and maneuvering the load. Energy losses in the electrical system come from the power generation, transmission and distribution system. In the transmission system, energy losses can be minimized by increasing the transmission voltage to high and extra high voltage levels. The load curve is a curve in a time range which shows the value of electrical energy use and load for a feeder so that PT. PLN (Persero) UP3 Manokwari can estimate power requirements. Expense curves can be divided into three types, namely daily curves, monthly curves and annual curves. Research throughout October 2021 used quantitative methods in processing data and calculating losses so that the power loss was 2.0070% and the energy loss was 1.9847%. This loss is still far below the state electricity company standard D3.002-2 (2008) in range of 5% to 10%.
Persepsi Penerapan Tenaga Kerja Terhadap Penerapan Sistem Manajemen Mutu Iso 9001:2015 Pada Proyek Konstruksi di Kabupaten Manokwari Sarifudin, Muhammad; Tethool, Yoga C.V; Stepanus, Jamius Bin
Journal of Comprehensive Science Vol. 5 No. 1 (2026): Journal of Comprehensive Science
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jcs.v5i1.3927

Abstract

This study highlights that uneven human resource quality can hinder the planning and execution of construction projects, making the implementation of a quality management system essential. The research aims to determine workers’ perceptions of the implementation of the ISO 9001:2015 Quality Management System in construction projects in Manokwari Regency. Data were collected using questionnaires and analyzed through descriptive qualitative statistical methods. Questionnaire results were tested for validity and reliability using data tabulation in Excel and manual processing with a rating scale. The analysis shows that the overall perception of ISO 9001:2015 implementation reached an achievement rate of 81.63%, categorized as Very Good. Among the perception indicators, the highest values were found in the customer satisfaction variable, specifically company commitment and company understanding (88.57%). In the leadership variable, responsibility and leadership control indicators achieved the highest score (90.00%). The involvement of people variable showed strong coordination (88.57%). For the process approach variable, identification indicators scored 86.67%. In continuous improvement, indicator development and method renewal reached 85.24%. Decision-making based on evidence was strongest in activity records (85.71%), while relationship management achieved its highest value in ensuring product and service quality (87.14%). Overall, the findings indicate that the ISO 9001:2015 Quality Management System has been implemented effectively in construction projects in Manokwari Regency, with particularly strong performance in leadership, customer satisfaction, and coordination aspects.
Co-Authors Adelhard Beni Rehiara, Adelhard Beni Islam, Muh. Fajar Kolibongso, Duaitd Musa, Asril Yanto Palintin, Antonius Duma Patiran, Abdul Zaid Podajow, Herybertus Rivanaldi Rehiara, Adelhard Sarifudin, Muhammad Sirampun, Alfhons Daniel Sumarna, Sabir Tethool, Yoga C.V Workala, Roy Charly