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Techno: Jurnal Penelitian
Published by Universitas Khairun
ISSN : 1978610X     EISSN : 25807129     DOI : -
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture
TECHNO: Jurnal Penelitian diterbitkan oleh Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Khairun, dua kali terbit dalam setahun dengan jumlah artikel dalam sekali terbit sebanyak 8 tulisan.
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Articles 169 Documents
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Earthquake Hazard Mapping Based on Earthquake Intensity Model in North Maluku Islands Ningrum, Rohima Wahyu; Achmad, Rahim; Aswan, Marwis; Raharjo, Wiji
TECHNO: JURNAL PENELITIAN Vol 13, No 2 (2024): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v13i2.9737

Abstract

Earthquake hazard mapping in the North Maluku region is urgent and essential because this area has a very high earthquake hazard potential. The high level of earthquake vulnerability in the North Maluku region makes it very important to focus mitigation activities to reduce the impact of earthquakes that occur. Earthquake hazard mapping that illustrates the effects of earthquakes on an area is one of the disaster mitigation efforts. In this study, earthquake intensity using the Probability Seismic Hazard Analysis (PSHA) method will be used to analyse the level of earthquake hazard in the North Maluku region. The results of the distribution of Peak Ground Acceleration (PGA) values for North Maluku range from 0.67 - 3.75 g. At the same time, the value of the MMI earthquake intensity scale is in the range of IX-XII. The most incredible earthquake intensity is in the Morotai, West Halmahera, Ternate, Tidore, Bacan, and Obi Island areas. The results of this study can have implications as a reference in safer spatial and infrastructure planning, the preparation of more effective mitigation strategies, and can be a medium for educating the public to be more prepared and responsive to earthquake risks.
Activated Carbon from Mulu Bebe Stem Waste for Methylene Blue (MB) Adsorption Cipta, Indra; Baturante, Nur Jannah; Zam Zam, Zulkifli; Pasimanyeku, Angela; Rombe, Yunita Pare
TECHNO: JURNAL PENELITIAN Vol 13, No 1 (2024): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v13i1.6862

Abstract

Methylene blue is a harmful synthetic dye waste component that poses a significant threat to the environment and human health if not disposed of properly. The best way to tackle this problem is by adsorption through activated carbon from Mulu Bebe banana stems, which are widely available in North Maluku. This agricultural waste can be used to produce activated carbon through pyrolysis at 500ËšC for 30 minutes and activation using 0.5 M KOH solution for 24 hours. The activated carbon is then characterized using FTIR, SEM and XRD, which reveal the presence of various functional groups and pores. The XRD results indicate that the activated carbon structure tends to be amorphous. The adsorption analysis shows that the activated carbon from Mulu Bebe banana stems has a high adsorption capacity of 12.4 mg/g at the optimum condition of pH 7, contact time of 30 minutes, and initial concentration of 50 ppm. The Langmuir and Freundlich equations provide the best fit for the equilibrium adsorption data. By using activated carbon from Mulu Bebe banana stems, we can effectively reduce the amount of methylene blue waste in the environment and protect the ecosystem and human health.
Boiler Performance with Variations in Fuel Mix Composition Feeding Winarto, Adi Putra; Sari, Dessy Agustina
TECHNO: JURNAL PENELITIAN Vol 13, No 1 (2024): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v13i1.6897

Abstract

PKS Kertajaya is a subsidiary of PTPN VIII, which focuses on the palm oil industry. a number of main processing and supporting equipment for this factory. One of the key aspects of the production process is the use of the boiler. This equipment produces steam, which is needed by various palm oil production processes and even factory utility areas. Therefore, the research study focused on the quantity of fuel used in producing the steam. The palm oil industry utilizes the solid waste from fresh fruit bunches, namely fibers and shells. The variable variation is in the percentage of the two fuels. From the estimation results using the direct method, it was found that the feeding conditions of 50:50, 60:40, and 70:30% were able to provide an increase in boiler efficiency values along with decreasing operational fuel costs. However, if you compare it with the quantity of fuel that has been applied by the industry, the percentage of 50:50% is the optimum condition, both in terms of boiler efficiency and economic value, which is one level higher than the current condition. This consideration is viewed from the estimation side as well as the amount of carbon content owned. Apart from that, the palm oil industry continues to maintain performance during routine maintenance of boiler equipment. Ingredients other than carbon are able to make short- to long-term contributions to producing steam. PKS Kertajaya merupakan anak perusahaan PTPN VIII yang berfokus di bidang industri kelapa sawit.  Dari sejumlah peralatan utama proses maupun pendukung pabrik ini. Ssalah satu aspek kunci proses produksinya berada pada penggunaan boiler. Peralatan ini menghasilkan uap air yang dibutuhkan ragam proses produksi minyak kelapa sawit bahkan area utilitas pabrik. Oleh karena itu, kajian penelitian difokuskan ke kuantitas bahan bakar yang digunakan dalam memproduksi steam tersebut. Pihak industri kelapa sawit memanfaatkan peran limbah padat dari tandan buah segar, yaitu serabut dan cangkang. Variasi variabel berada pada persentase kedua bahan bakar tersebut. Dari hasil estimasi melalui penggunaan metode langsung didapatkan bahwa kondisi pengumpanan 50:50, 60:40, dan 70:30% mampu memberikan peningkatan nilai efisiensi boiler dengan seiring menurunnya biaya operasional bahan bakar. Akan tetapi, jika membandingkan dengan kuantitas bahan bakar yang telah diterapkan pihak industri maka persentase 50:50% adalah kondisi optimum baik sisi efisiensi boiler dan nilai ekonomi yang lebih tinggi satu tingkat dari kondisi saat ini. Pertimbangan ini ditinjau dari sisi estimasi dan juga jumlah kandungan karbon yang dimiliki. Selain itu, pihak industri kelapa sawit tetap menjaga performa selama terutama pelaksanaan perawatan rutin peralatan boiler. Kandungan selain karbon mampu memberikan kontribusi baik jangka pendek hingga panjang dalam memproduksi uap air.  
Utilization of Fishery Waste from The Morotai People's Market as Natural Flavoring Pahana, Andrha S.; Hi. Muhammad, Sandra; Seng, Meysi Riska; Kasim, Alkadri M.; Hj Djafar, Moch Nurcholis; Nur, Rinto Muhammad
TECHNO: JURNAL PENELITIAN Vol 13, No 2 (2024): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v13i2.9715

Abstract

Capture fisheries production in Morotai continues to increase from 2019-2021, with an average annual production of 17,102.3 tons. The increase in capture fisheries production is in line with the amount of fish waste produced. In Morotai, fish waste is produced from fisheries processing industries and fish sales places such as markets. This waste has not been utilized and is thrown into the environment. Even though these wastes still contain nutrients, especially protein, they can be used to make flavorings. The main flavoring ingredient is glutamate. This research aims to utilize fish waste from the market as raw material for making flavorings. This research used an experimental method by making four variations of flavorings. Before being processed into flavoring, fish waste will be treated by soaking it in a whiting solution, baking soda solution, or pineapple juice without soaking it. The powdered flavoring obtained was then analyzed for its hedonic organoleptic value using 30 panelists. Proximate tests were also conducted to determine the water, protein, fat, and ash content. The research results showed that, on average, the panelists liked the powdered flavoring from fish waste that had been soaked with lime, pineapple, and baking soda without soaking. The results of the proximate analysis showed that the flavoring water content ranged from 11.30—19.59%, the protein content ranged from 19.74—30.97%, the fat content ranged from 0.59—30.97, and the ash content ranged from 18.11—23.62%.
Toward Resilience City: Potential Hazards and Scenario for Ternate Island, North Maluku Lessy, Mohammad Ridwan; Nagu, Nani; Hadi, Fais Nurul
TECHNO: JURNAL PENELITIAN Vol 13, No 1 (2024): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v13i1.7329

Abstract

Natural hazards and climate change significantly threaten almost every small island. This is due to the small island's isolation and lack of resources. Ternate Island is a small island that is now afflicted by this issue. Geographically, the island is surrounded by active plates and volcanic paths, making it at risk of serious catastrophes. Population growth and limited land resources also contribute to a high disaster susceptibility. We characterize the features of the small island of Ternate by classifying the types of disasters that threaten it based on a literature database. Earthquakes, volcanic eruptions, floods, extreme weather events, and tsunamis are natural disasters that occur often in Ternate. Additionally, these findings indicate the significant importance of a multi-hazard approach to disaster response. Our examination concludes with some recommendations for establishing the resilience of Ternate City.
Analysis of Marine Debris Distribution Through Sort Transport Clean in the Coastal Waters of Ternate City Sinyo, Yumima; Saibi, Ningsih; Liestianty, Deasy; Annisa, Dira Ayu
TECHNO: JURNAL PENELITIAN Vol 13, No 2 (2024): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v13i2.8358

Abstract

Marine pollution, originating from land-based sources and intentional dumping at sea, is a significant hazard to marine life and health. Plastic pollution, which constitutes about 85% of marine debris, causes severe damage to marine ecosystems and species, causing disruptions in marine activities and deteriorating seawater quality. This research aims to see the distribution of marine debris in the coastal waters of Ternate city. The method used in this research is purposive sampling technique through observation to obtain the composition of marine debris, the rate of increase of marine debris with 3 criteria, namely the presence of river mouths, community activities such as ecotourism activities and piles of garbage produced by fishermen. The data obtained was then analyzed by visually observing and recording. The result of this study is the discovery of organic and inorganic waste. The percentage density of organic waste is 13% while inorganic waste is 87%. This shows that inorganic waste is generated the most. Inorganic waste in the form of plastic, cloth, glass, steroform and aluminum is produced by human activities visiting the coast. The organic waste found is wood and fruit peels.
NACA 0020 Horizontal Axis Wind Turbine Design Optimization to Increase Coefficient of Power (Cp) Suyono, Tri; Umron, Amat; Harbelubun, Mohammad Muzni
TECHNO: JURNAL PENELITIAN Vol 14, No 2 (2025): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v14i2.10268

Abstract

Renewable energy is the primary solution to future energy challenges. Horizontal-axis wind turbines (HAWTs) have great potential as a source of clean energy, especially in remote areas. This study aims to optimize the number of HAWT blades to increase the Coefficient of Power (Cp) through simulation and experimental methods. Optimization is done by modifying the angle of attack and the number of blades. Aerodynamic simulations using the QBLADE software were validated through laboratory experiments with small-scale prototypes. The study calculated the harvestable wind energy using the Betz limit (59%) and the Cp range from the previous study (35-45%). The turbine's efficiency is strongly influenced by the number of blades operating based on lift, with the glide ratio being an important parameter. The turbine blade was manufactured using NACA 0020 at the Mechanical Engineering workshop at Khairun University. Testing is carried out in the laboratory to measure the relationship between the number of blades, rotor rotation, and the generator's output power. This process accounts for mechanical, generator, and heat losses. The experimental data is validated by simulation and calculation to formulate the number of blade relationships as design recommendations. Based on analyses of the relationships among Cp, Cm, and TSR, and comparisons with previous studies, the number of wind turbine blades was shown to have a significant effect on aerodynamic efficiency, initial torque, and energy conversion performance. The 2-blade turbine is well-suited to strong winds due to its high efficiency at high TSRs, but it is less stable and has low starting torque. The 6-blade turbine excels at low TSR with ample initial torque, ideal for slow winds and mechanical applications, although its efficiency decreases at high TSR. 3-blade turbines offer the best compromise, making them a top choice in commercial systems.
Inflation by The Einstein-Scalar-Gauss-Bonet Theory with Potential Inflation Sambiri, Usman; Saputra, Aji
TECHNO: JURNAL PENELITIAN Vol 14, No 2 (2025): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v14i2.10643

Abstract

Research has been conducted on the inflation theory by Einstein scalar-Gauss-Bonet theory with inflation potential to study the scenario of inflation. The purpose of this study is to calculate the inflation solution of the ESGB model. The research method used is a literature study with a mathematical approach. In this model, the Gauss-Bonet term is coupled with a scalar field so that it significantly modifies the dynamics of the early universe. The form of the scalar field used is f(Phi) = lambda(Phi)2 and the inflation potential is quadratic, V = (Phi)2 . The lambda values used are 0.1; 0.2; 0.5; 1.0; 2.0; 10. For lambda less than or equal to 0.5, successfully demonstrate the inflationary solution, namely obtaining an exponentially expanding scale factor and a fixed value of the Hubble constant. In addition, the linear e-fold value is obtained by a linear graph and an exponentially decaying scalar field is obtained and an exponentially decaying scalar field is obtained. These results indicate that the ESGB model with inflationary potential can demonstrate the existence of an inflationary solution.
Effect of Blending Methods on the Mechanical Properties of PALF-Cotton Hybrid Yarns Produced via Open-End Spinning Rusman, Fahmi Fawzy; Afifuddin, Mokh; Harianto, Dedy; Parmawati, Sih; Kusnadi, Bambang; Ardiyanto, Agus; Hindardi, Darmawan
TECHNO: JURNAL PENELITIAN Vol 14, No 2 (2025): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v14i2.10854

Abstract

The increasing demand for eco-friendly materials in the textile industry has led to greater attention on the use of natural fibers, such as pineapple leaf fiber (PALF), which is abundant as agricultural waste. However, its coarse structure and limited spinnability pose challenges in yarn manufacturing. This study aims to compare two fiber blending methods, sliver blending using a drawing frame and fiber blending using a blowing machine in the production of PALF-cotton hybrid yarns via an open-end spinning system. Both samples were prepared using a 50:50 PALF-cotton ratio and evaluated for yarn count, tenacity, and elongation. The results showed that the yarns blended through the blowing process demonstrated superior tenacity and more consistent yarn count. Statistical analysis using an independent sample t-test confirmed that these differences were significant (p 0.05). Elongation values were also significantly higher in yarns processed using the blowing method. These findings highlight the importance of blending technique in improving fiber distribution, inter fiber cohesion, and overall yarn quality. It can be concluded that the blowing method offers a more effective strategy for producing sustainable PALF-cotton hybrid yarns, suitable for industrial scale applications. This research contributes to the advancement of sustainable textile processing and provides a practical reference for industries seeking to utilize agro waste fibers in yarn production.

Page 17 of 17 | Total Record : 169

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